1. The utility model provides a magnetorheological suspensions retarber with self-expanding seal structure, includes retarber body (11), install supplementary speed reduction axle (3) in retarber body (11), be connected with matched with rotor casing (1) and stator casing (2) on supplementary speed reduction axle (3), its characterized in that: be connected with expansion type sealing member (6) between rotor casing (1) and stator casing (2), fixedly connected with multilayer expansion stable branch (602) in expansion type sealing member (6), expansion stable branch (602) tip fixedly connected with and expansion type sealing member (6) matched with self-expanding flexible bag (7), adsorption connection has a plurality of inductance inflation balls (8) in self-expanding flexible bag (7), a plurality of penetrating micropores have been seted up to self-expanding flexible bag (7) outer wall, fixedly connected with and inductance inflation ball (8) matched with electrically conductive knitting wool in the penetrating micropore.

2. The magnetorheological retarder with the self-expanding sealing structure according to claim 1, wherein: the inductance expansion ball (8) is filled with a compression energy storage expansion bag (9), a plurality of binding silk threads (901) are fixedly connected in the compression energy storage expansion bag (9), and the binding silk threads (901) are arranged in a crossed mode.

3. The magnetorheological retarder with the self-expanding sealing structure according to claim 2, wherein: the outer wall of the compression energy storage expansion bag (9) is fixedly connected with a plurality of binding lines (902), one end, close to the compression energy storage expansion bag (9), of each binding line (902) is fixedly connected with a corresponding binding silk thread (901), one end, far away from the compression energy storage expansion bag (9), of each binding line (902) extends to the outer side of the inductance expansion ball (8), and the cambered surface adsorption antenna (903) is fixedly connected with each binding line.

4. The magnetorheological retarder with the self-expanding sealing structure according to claim 3, wherein: the constraint knot line (902) is connected with inductance expansion ball (8) fixed connection, the cambered surface adsorbs a plurality of absorption mouths of antenna (903) outer wall fixed connection.

5. The magnetorheological retarder with the self-expanding sealing structure according to claim 3, wherein: the binding knot line (902) is close to cambered surface and adsorbs feeler (903) one end fixedly connected with toper and draws the piece, the toper is drawn piece and is close to inductance expansion ball (8) one end fixedly connected with a plurality of arc ratchets (904).

6. The magnetorheological retarder with the self-expanding sealing structure according to claim 5, wherein: one end, close to the inductance expansion ball (8), of the cambered surface adsorption antenna (903) is fixedly connected with a plurality of auxiliary ball breaking teeth (905), and the auxiliary ball breaking teeth (905) are all surrounded on the outer side of the conical guide block.

7. The magnetorheological retarder with the self-expanding sealing structure according to claim 1, wherein: a plurality of flexible connecting support bars (10) are fixedly connected between two adjacent self-expanding expansion bags (7), and the outer ends of the flexible connecting support bars (10) are fixedly connected with expansion adhesive blocks (1001).

8. The magnetorheological retarder with the self-expanding sealing structure according to claim 1, wherein: the expansion type sealing element (6) is filled with an elastic telescopic layer (601), and the elastic telescopic layer (601) wraps the expansion stabilizing support rod (602) and the self-expansion telescopic bag (7).

9. The magnetorheological retarder with the self-expanding sealing structure according to claim 1, wherein: rotor casing (1) internal rotation is connected with rotor wheel (4), and rotor wheel (4) and supplementary speed reduction shaft (3) fixed connection, stator casing (2) internal fixed connection has stator wheel (5) with rotor wheel (4) matched with, it has magnetorheological suspensions to fill between rotor wheel (4) and stator wheel (5).

10. The magnetorheological retarder with the self-expanding sealing structure according to claim 1, wherein: rotor casing (1) and stator casing (2) are close to one side mutually and all have been seted up with expansion type sealing member (6) matched with seal groove, the color development chamber has been seted up to the seal groove outer wall, the color development intracavity is filled with transparent inefficacy color development strip, transparent inefficacy color development strip intussuseption is filled with the mixed color development granule.

Background

In order to continuously reduce or maintain a stable vehicle speed and reduce or release the load of a driving brake for a long time while descending a slope, an auxiliary braking device such as a retarder is generally required to be additionally installed to an automobile which is frequently driven in a mountain area or a hilly area. Generally, passenger cars with a total mass above 5t and trucks above 12t need to be equipped with such auxiliary braking reduction devices.

With the continuous development of science and technology, the magnetorheological fluid retarder is widely used as a vehicle braking auxiliary device, the original hydraulic retarder is replaced by the characteristics of small volume, low energy consumption, high braking speed and the like, and in the using process of the magnetorheological fluid retarder, the principle of the magnetorheological fluid retarder is that the magnetorheological fluid flows in a shell to act on a rotor and a stator so as to achieve the effect of auxiliary braking. However, the existing sealing structure for the magnetorheological fluid retarder is easy to wear and deform under the action of long-term use and high temperature, so that the sealing is invalid, the sealing performance of the magnetorheological fluid retarder is further reduced, the braking effect of the magnetorheological fluid retarder is reduced, and the service life of the magnetorheological fluid retarder is prolonged.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a magnetorheological fluid retarder with a self-expansion sealing structure, which can realize the self-expansion of the magnetorheological fluid retarder by the mutual matching of a self-expansion telescopic bag and an inductance expansion ball, when the expansion type sealing element is damaged and consumed to generate a failure state, the self-expansion bag is contacted with a medium between the rotor shell and the stator shell, the inductive expansion ball is expanded by the inductance under the action of the conductive knitting wool, the volume is increased, thereby driving the self-expansion bag to expand and supplement the failure position, effectively ensuring the sealing performance of the retarder body when in work, improving the braking effect and prolonging the service life of the retarder body, and carry out the expansion through the self-expanding flexible bag to the point of failure and supply, effectively improve the life of expansion type sealing member, reduce the continuation aggravation of point of failure, and then reduce the cost of maintenance of retarber body.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

The utility model provides a magnetorheological suspensions retarber with self-expanding seal structure, includes the retarber body, install supplementary speed reduction axle in the retarber body, be connected with matched with rotor casing and stator casing on the supplementary speed reduction axle, be connected with expansion type sealing member between rotor casing and the stator casing, fixedly connected with multilayer expansion stable branch in the expansion type sealing member, expansion stable branch tip fixedly connected with and expansion type sealing member matched with self-expanding flexible bag, the adsorption connection has a plurality of inductance inflation balls in the self-expanding flexible bag, a plurality of penetrating micropores have been seted up to self-expanding flexible bag outer wall, fixedly connected with in the penetrating micropore and inductance inflation ball matched with electrically conductive knitting wool. Through mutually supporting of self-expanding flexible bag and inductance inflation ball, when the impaired consumption of expansion type sealing member produced failure state, the medium contact between self-expanding flexible bag and rotor casing and the stator casing, through electrically conductive knitting wool effect inductance inflation ball, make inductance inflation ball production inductance inflation, the increase volume, and then drive the flexible bag volume expansion of self-expanding and supply to the position of failure, effectively guarantee the leakproofness of retarber body during operation, improve the braking effect and the life of retarber body, and expand the replenishment to the point of failure through the flexible bag of self-expanding, effectively improve the life of expansion type sealing member, reduce the continuation aggravating of the point of failure, and then reduce the cost of maintenance of retarber body.

Furthermore, a compression energy storage expansion bag is filled in the inductance expansion ball, a plurality of binding silk threads are fixedly connected in the compression energy storage expansion bag, and the plurality of binding silk threads are arranged in a cross mode. The constraint silk thread controls the compression energy storage expansion bag, controls the compression energy storage expansion bag to keep the contraction state all the time when the expansion type sealing element is not invalid, effectively stores the deformation kinetic energy of the compression energy storage expansion bag, and supplements the expansion force of the inductance expansion ball by the compression energy storage expansion bag, thereby improving the expansion efficiency of the inductance expansion ball, shortening the supplementation time of the point of failure and improving the guarantee strength of the self-expansion bag to the sealing property.

Furthermore, the outer wall of the compression energy storage expansion bag is fixedly connected with a plurality of binding lines, one end, close to the compression energy storage expansion bag, of each binding line is fixedly connected with the corresponding binding silk thread, one end, far away from the compression energy storage expansion bag, of each binding line extends to the outer side of the inductance expansion ball, and the cambered surface of each binding line is fixedly connected with an adsorption antenna. Through the mutual cooperation of cambered surface absorption antenna and constraint knot lines, after inductance inflation ball circular telegram inflation, the constraint knot lines breaks the constraint silk thread along with inductance inflation ball's action, contacts its control to compression energy storage inflation bag, makes compression energy storage inflation bag can produce and resumes deformation, when inductance inflation ball is different electric, effectively supports inductance inflation ball and the expansion of self-expanding expansion bag, improves the stability after the self-expanding expansion bag expansion.

Furthermore, the constraint lines are fixedly connected with the inductance expansion ball, and the cambered surface adsorbs a plurality of adsorption nozzles fixedly connected with the outer wall of the antenna. The cambered surface adsorbs the feeler and adsorbs and adsorb each other through the wall of adsorption nozzle and self-expanding expansion bag, has increased the mutual adsorption affinity between a plurality of inductance expansion balls and the compression energy storage expansion bag, has further improved the stability of self-expanding expansion bag expansion, improves sealed effect.

Furthermore, one end, close to the cambered surface adsorption antenna, of the binding knot line is fixedly connected with a conical guide block, and one end, close to the inductance expansion ball, of the conical guide block is fixedly connected with a plurality of arc-shaped inverted spines. The toper draws piece and the cooperation of arc inverted thorn, expands to a certain point after inductance expansion ball, tears inductance expansion ball, removes inductance expansion ball to the restriction of compression energy storage inflation bag, makes compression energy storage inflation bag can further expand, increases the volume of self-expanding flexible bag once more, effectively realizes supplementing the secondary of failure point, when in time maintaining for the retarber body, can continuously keep the leakproofness of retarber body, and then effectively realizes multiple protection to it.

Furthermore, one end, close to the inductance expansion ball, of the cambered surface adsorption antenna is fixedly connected with a plurality of auxiliary ball breaking teeth, and the auxiliary ball breaking teeth are all arranged on the outer side of the conical guide block in an encircling mode. Supplementary broken ball tooth carries out further smashing to the inductance inflation ball after the breakage, and the restriction of inductance inflation ball to compression energy storage inflation bag is completely separated, effectively avoids the piece of inductance inflation ball to cause the damage to compression energy storage inflation bag to effectively reduce the piece volume of inductance inflation ball, provide sufficient space for the deformation of compression energy storage inflation bag, make compression energy storage inflation bag effectively support the self-expanding expansion bag.

Furthermore, a plurality of flexible connecting branch bars are fixedly connected between two adjacent self-expanding expansion bags, and the outer ends of the flexible connecting branch bars are fixedly connected with expansion adhesive blocks. When the expansion of the self-expanding expansion bag supplements failure points, the flexible connecting branch bars and the expansion adhesive blocks are deformed after being exposed, the expansion adhesive blocks are expanded and bonded with each other, a layer of closed protective film is formed between the expansion adhesive blocks and the self-expanding expansion bag, the place where the self-expanding expansion bag is not supplemented completely is effectively protected, the periphery of the failure point range is supported, and the sealing effectiveness and the supplementary sealing timeliness are increased.

Furthermore, an elastic telescopic layer is filled in the expansion type sealing element, and the expansion stabilizing support rod and the self-expansion telescopic bag are wrapped by the elastic telescopic layer. The elastic expansion layer can generate suitable deformation along with the deformation of the self-expansion telescopic bag, so that the expansion type sealing element can be matched with the self-expansion telescopic bag to be synchronously filled, the self-repairing capacity of the expansion type sealing element is further improved, and the service life of the expansion type sealing element is prolonged.

Furthermore, a rotor impeller is connected in the rotor shell in a rotating mode and is fixedly connected with the auxiliary speed reducing shaft, a stator impeller matched with the rotor impeller is fixedly connected in the stator shell, and magnetorheological fluid is filled between the rotor impeller and the stator impeller. When the retarder body needs to be used, the magnetorheological fluid is electrified, so that the property is changed, the resistance between the rotor impeller and the stator impeller is increased, and the effect of assisting in speed reduction is effectively achieved.

Further, rotor casing and stator casing are close to one side mutually and all have been seted up with expansion type sealing member matched with seal groove, the color development chamber has been seted up to the seal groove outer wall, the color development intracavity is filled with transparent inefficacy color development strip, transparent inefficacy color development strip intussuseption is filled with mixed color development granule, and mixed color development granule is color development silica gelGranules and WO₃The particles are mixed according to a certain proportion, and the outer layer of the transparent failure color development strip is a semi-permeable film. Make the color development reaction after the expansion type sealing member became invalid through transparent inefficacy color development strip, remind vehicle driver in time to maintain the retarber body to through color development silica gel granule and WO₃The particle mixing color development can generate color development reminding in the early stage of the failure of the expansion type sealing element, enough reaction time is reserved for a vehicle driver, and the safety of the retarder body in use is improved.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through mutually supporting of self-expanding flexible bag and inductance inflation ball, when the impaired consumption of expansion type sealing member produced failure state, the medium contact between self-expanding flexible bag and rotor casing and the stator casing, through electrically conductive knitting wool effect inductance inflation ball, make inductance inflation ball production inductance inflation, the increase volume, and then drive the long-pending expansion of self-expanding flexible bag and replenish the position of failure, effectively guarantee the leakproofness of retarber body during operation, improve the braking effect and the life of retarber body, and expand the replenishment to the point of failure through the self-expanding flexible bag, effectively improve the life of expansion type sealing member, reduce the continuation aggravation of point of failure, and then reduce the cost of maintenance of retarber body.

(2) The constraint silk thread controls the compression energy storage expansion bag, controls the compression energy storage expansion bag to keep the contraction state all the time when the expansion type sealing element is not invalid, effectively stores the deformation kinetic energy of the compression energy storage expansion bag, and supplements the expansion force of the inductance expansion ball by the compression energy storage expansion bag, thereby improving the expansion efficiency of the inductance expansion ball, shortening the supplementation time of the point of failure and improving the guarantee strength of the self-expansion bag to the sealing property.

(3) Through the mutual cooperation of cambered surface absorption antenna and constraint knot lines, after inductance inflation ball circular telegram inflation, the constraint knot lines breaks the constraint silk thread along with inductance inflation ball's action, contacts its control to compression energy storage inflation bag, makes compression energy storage inflation bag can produce and resumes deformation, when inductance inflation ball is different electric, effectively supports inductance inflation ball and the expansion of self-expanding expansion bag, improves the stability after the self-expanding expansion bag expansion.

(4) The cambered surface adsorbs the feeler and adsorbs and adsorb each other through the wall of adsorption nozzle and self-expanding expansion bag, has increased the mutual adsorption affinity between a plurality of inductance expansion balls and the compression energy storage expansion bag, has further improved the stability of self-expanding expansion bag expansion, improves sealed effect.

(5) The toper draws piece and the cooperation of arc inverted thorn, expands to a certain point after inductance expansion ball, tears inductance expansion ball, removes inductance expansion ball to the restriction of compression energy storage inflation bag, makes compression energy storage inflation bag can further expand, increases the volume of self-expanding flexible bag once more, effectively realizes supplementing the secondary of failure point, when in time maintaining for the retarber body, can continuously keep the leakproofness of retarber body, and then effectively realizes multiple protection to it.

(6) Supplementary broken ball tooth carries out further smashing to the inductance inflation ball after the breakage, and the restriction of inductance inflation ball to compression energy storage inflation bag is completely separated, effectively avoids the piece of inductance inflation ball to cause the damage to compression energy storage inflation bag to effectively reduce the piece volume of inductance inflation ball, provide sufficient space for the deformation of compression energy storage inflation bag, make compression energy storage inflation bag effectively support the self-expanding expansion bag.

(7) When the expansion of the self-expanding expansion bag supplements failure points, the flexible connecting branch bars and the expansion adhesive blocks are deformed after being exposed, the expansion adhesive blocks are expanded and bonded with each other, a layer of closed protective film is formed between the expansion adhesive blocks and the self-expanding expansion bag, the place where the self-expanding expansion bag is not supplemented completely is effectively protected, the periphery of the failure point range is supported, and the sealing effectiveness and the supplementary sealing timeliness are increased.

(8) The elastic expansion layer can generate suitable deformation along with the deformation of the self-expansion telescopic bag, so that the expansion type sealing element can be matched with the self-expansion telescopic bag to be synchronously filled, the self-repairing capacity of the expansion type sealing element is further improved, and the service life of the expansion type sealing element is prolonged.

(9) When the retarder body needs to be used, the magnetorheological fluid is electrified, so that the property is changed, the resistance between the rotor impeller and the stator impeller is increased, and the effect of assisting in speed reduction is effectively achieved.

(10) Make the color development reaction after the expansion type sealing member became invalid through transparent inefficacy color development strip, remind vehicle driver in time to maintain the retarber body to through color development silica gel granule and WO₃The particle mixing color development can generate color development reminding in the early stage of the failure of the expansion type sealing element, enough reaction time is reserved for a vehicle driver, and the safety of the retarder body in use is improved.

Drawings

FIG. 1 is a schematic view of an axial structure of the present invention;

FIG. 2 is an exploded view of the rotor and stator housings of the present invention;

FIG. 3 is a schematic cross-sectional front view of the expandable seal of the present invention;

FIG. 4 is a schematic diagram of the structure at A in FIG. 3 according to the present invention;

FIG. 5 is a schematic view showing the internal structure of the self-expanding bellows of the present invention;

FIG. 6 is a schematic view of the internal structure of the inductive expansion ball and the compression energy storage expansion bladder of the present invention;

FIG. 7 is a schematic view of the structure of FIG. 6 at point B;

FIG. 8 is a schematic axial view of the flexible connecting strut of the present invention;

FIG. 9 is a schematic view of a partial axial cross-sectional configuration of the diffusion seal of the present invention in the event of failure;

FIG. 10 is a schematic view of the expanded configuration of the self-expanding bellows after failure of the expandable sealing element of the present invention.

The reference numbers in the figures illustrate:

1 rotor casing, 2 stator casings, 3 supplementary speed reduction shafts, 4 rotor impellers, 5 stator impellers, 6 expanding type sealing members, 601 elastic expansion layer, 602 expansion stable supporting rod, 7 self-expansion bag, 8 inductance expansion ball, 9 compression energy storage expansion bag, 901 constraint silk thread, 902 constraint knot line, 903 cambered surface adsorption feeler, 904 arc pawl, 905 supplementary broken ball tooth, 10 flexible connection supporting strip, 1001 expansion viscidity piece, 11 retarber body.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-10, a magnetorheological fluid retarder with a self-expanding sealing structure comprises a retarder body 11, an auxiliary speed reducing shaft 3 is installed in the retarder body 11, a rotor housing 1 and a stator housing 2 which are matched with each other are connected to the auxiliary speed reducing shaft 3, referring to fig. 2, a rotor impeller 4 is rotatably connected to the rotor housing 1, the rotor impeller 4 is fixedly connected to the auxiliary speed reducing shaft 3, a stator impeller 5 which is matched with the rotor impeller 4 is fixedly connected to the stator housing 2, and magnetorheological fluid is filled between the rotor impeller 4 and the stator impeller 5. When the retarder body 11 needs to be used, the magnetorheological fluid is electrified, so that the property is changed, the resistance between the rotor impeller 4 and the stator impeller 5 is increased, and the effect of assisting in speed reduction is effectively achieved. An expansion type sealing element 6 is connected between the rotor casing 1 and the stator casing 2, a plurality of layers of expansion stabilizing supporting rods 602 are fixedly connected in the expansion type sealing element 6, and a self-expansion bellows 7 matched with the expansion type sealing element 6 is fixedly connected at the end part of the expansion stabilizing supporting rod 602, please refer to fig. 3, fig. 4 and fig. 9, an elastic expansion layer 601 is filled in the expansion type sealing element 6, and the expansion stabilizing supporting rod 602 and the self-expansion bellows 7 are wrapped by the elastic expansion layer 601. The elastic expansion layer 601 can generate suitable deformation along with the deformation of the self-expansion bag 7, so that the expansion type sealing element 6 can be matched with the self-expansion bag 7 to be synchronously filled, the self-repairing capability of the expansion type sealing element 6 is further improved, and the service life of the expansion type sealing element 6 is prolonged.

Referring to fig. 5, a plurality of inductance expansion balls 8 are attached to the inside of the self-expanding bellows 7, a plurality of through micro-holes are formed in the outer wall of the self-expanding bellows 7, and conductive knitting wool matched with the inductance expansion balls 8 is fixedly connected to the through micro-holes. Through mutually supporting of self-expanding flexible bag 7 and inductance inflation ball 8, when the impaired consumption of expansion type sealing member 6 produced failure state, self-expanding flexible bag 7 and rotor casing 1 and the direct medium contact of stator casing 2, through electrically conductive knitting wool effect inductance inflation ball 8, make inductance inflation ball 8 produce the inductance inflation, the increase volume, and then drive the expansion of self-expanding flexible bag 7 volume and supply the failure location, effectively guarantee the leakproofness of retarber body 11 during operation, improve the braking effect and the life of retarber body 11, and supply the failure point through the expansion of self-expanding flexible bag 7 expansion, effectively improve the life of expansion type sealing member 6, reduce the continuation aggravation of failure point, and then reduce the cost of maintenance of retarber body 11.

Referring to fig. 6, the inductance expansion ball 8 is filled with a compression energy storage expansion bladder 9, a plurality of binding threads 901 are fixedly connected to the compression energy storage expansion bladder 9, and the binding threads 901 are arranged in a crossing manner. The binding silk thread 901 controls the compression energy storage expansion capsule 9, controls the compression energy storage expansion capsule 9 to be always kept in a contraction state when the expansion type sealing element 6 does not fail, effectively stores the deformation kinetic energy of the compression energy storage expansion capsule 9, supplements the expansion force of the inductance expansion ball 8 by the compression energy storage expansion capsule 9, improves the expansion efficiency of the inductance expansion ball 8, shortens the supplement time of a failure point, and improves the guarantee strength of the self-expansion capsule 7 on the sealing property.

Referring to fig. 6, the outer wall of the compression energy storage expansion bladder 9 is fixedly connected with a plurality of binding lines 902, one end of each binding line 902 close to the compression energy storage expansion bladder 9 is fixedly connected with a corresponding binding thread 901, one end of each binding line 902 far away from the compression energy storage expansion bladder 9 extends to the outer side of the inductance expansion ball 8, and is fixedly connected with a cambered surface adsorption antenna 903. Through mutual cooperation of cambered surface absorption feeler 903 and constraint knot line 902, after inductance expansion ball 8 circular telegram inflation, constraint knot line 902 breaks constraint silk thread 901 along with inductance expansion ball 8's action, contact its control to compression energy storage inflation bag 9, make compression energy storage inflation bag 9 can produce and resume deformation, when inductance expansion ball 8 is different electric, effectively support inductance expansion ball 8 and self-expanding bellows 7's expansion, improve the stability after the expansion of self-expanding bellows 7.

Referring to fig. 6, a binding line 902 is fixedly connected to the inductance expansion ball 8, and a plurality of suction nozzles are fixedly connected to the outer wall of the arc suction antenna 903. The cambered surface adsorbs feeler 903 through the wall absorption of absorption mouth and self-expanding expansion bag 7 and mutual absorption, has increased the mutual adsorption affinity between a plurality of inductance expansion balls 8 and the compression energy storage expansion bag 9, has further improved the stability of self-expanding expansion bag 7 expansion, improves sealed effect.

Referring to fig. 7, a tapered lead block is fixedly connected to one end of the tie bar 902 close to the arc-shaped absorption antenna 903, and a plurality of arc-shaped inverted spines 904 are fixedly connected to one end of the tapered lead block close to the inductance expansion ball 8. The cooperation of piece and arc pawl 904 is drawn to the toper, after inductance expansion ball 8 expands to the fixed point, tear inductance expansion ball 8, remove the restriction of inductance expansion ball 8 to compression energy storage inflation bag 9, make compression energy storage inflation bag 9 can further expand, increase the volume of self-expanding flexible bag 7 once more, effectively realize supplementing the secondary of failure point, when in time maintaining for retarber body 11, can continuously keep retarber body 11's leakproofness, and then effectively realize its multiple protection.

Referring to fig. 7, one end of the arc surface adsorption antenna 903 close to the inductance expansion ball 8 is fixedly connected with a plurality of auxiliary ball breaking teeth 905, and the plurality of auxiliary ball breaking teeth 905 all surround the outer side of the tapered guide block. Supplementary broken ball tooth 905 carries out further smashing to inductance expansion ball 8 after the breakage, completely breaks away inductance expansion ball 8 and to the restriction of compression energy storage expansion bag 9, effectively avoids inductance expansion ball 8's piece to cause the damage to compression energy storage expansion bag 9 to effectively reduce inductance expansion ball 8's piece volume, provide sufficient space for compression energy storage expansion bag 9's deformation, make compression energy storage expansion bag 9 can effectively support self-expanding flexible bag 7.

Referring to fig. 1-10, the expansion method: when the expansion type sealing element 6 is damaged and fails in the use process of the retarder body 11, the retarder body 11 needs to be electrified to magnetorheological fluid when in use so as to increase the resistance between the rotor impeller 4 and the stator impeller 5 and play a role in assisting deceleration, so when the expansion type sealing element 6 fails (see fig. 9), the exposed self-expansion bellows 7 can transmit current to the inductance expansion ball 8 through the conductive knitting wool, the inductance expansion ball 8 expands under the action of the current and supports the self-expansion bellows 7 to expand, the self-expansion bellows 7 and the elastic expansion layer 601 on the outer side deform to supplement the failure part, the sealing performance of the expansion type sealing element 6 is effectively ensured, the service life of the expansion type sealing element 6 is prolonged, and the normal operation of the retarder body 11 is effectively ensured; when the secondary failure occurs or the failure point is expanded at the position of the expansion type sealing element 6, the inductive expansion ball 8 is continuously expanded under the influence of current, the binding line 902 is driven by the inductive expansion ball 8 to move, the binding thread 901 is broken to contact and control the compression energy storage expansion capsule 9, so that the compression energy storage expansion capsule 9 is restored to expand and release deformation kinetic energy to promote the expansion speed and the expansion size of the inductive expansion ball 8, the arc inverted spine 904 and the auxiliary ball breaking teeth 905 crush the continuously expanded inductive expansion ball 8 to break the inductive expansion ball 8, the compression energy storage expansion capsule 9 is continuously expanded to expand the self-expansion capsule 7 (see figure 10), so that the self-expansion capsule 7 continuously supplements the failure point for secondary repair, further ensures the sealing performance of the expansion type sealing element 6 and provides sealing protection for the retarder body 11, effectively when the vehicle driver did not in time change extension type sealing member 6, reduce retarber body 11's damage, improve retarber body 11's life.

Example 2:

referring to fig. 1 to 10, wherein the same or corresponding components as those in embodiment 1 are designated by the same reference numerals as those in embodiment 1, only the points different from embodiment 1 will be described below for the sake of convenience. This example 2 differs from example 1 in that: referring to fig. 8 and 10, a plurality of flexible connecting branches 10 are fixedly connected between two adjacent self-expanding bellows 7, and an expansion adhesive block 1001 is fixedly connected to the outer ends of the flexible connecting branches 10. When self-expanding bellows 7 expansion is supplemented to the point of failure, flexible connection branch 10 and inflation viscidity piece 1001 produce deformation after exposing, inflation viscidity piece 1001 enlarges and bonds each other, forms the one deck confined protective film with self-expanding bellows 7, and then effectively protects the place that self-expanding bellows 7 was not supplemented completely to the periphery to the point of failure scope support, increase self-expanding bellows 7's sealed validity and the sealed ageing of improvement replenishment.

On the basis of the expansion method of the embodiment 1, when the failure area of the expandable sealing element 6 is large, the flexible connecting branch 10 and the expansion adhesive block 1001 are exposed, when the self-expanding expansion bag 7 is expanded and supplemented, the volume of the expansion adhesive block 1001 is expanded after being contacted with a flowing medium in the retarder body 11, and bonding is generated between the expansion adhesive block and the retarder body, so that a closed protective film is formed between the self-expanding expansion bag 7 and the self-expanding expansion bag 7 (see fig. 10), the supplementation efficiency and the supplementation effect of the self-expanding expansion bag 7 are improved, the service life of failure supplementation is effectively prolonged while the sealing performance of the expandable sealing element 6 is improved, and the supplementation strength is improved.

Example 3:

referring to fig. 1 to 10, wherein the same or corresponding components as those in embodiment 1 are designated by the same reference numerals as those in embodiment 1, only the points different from embodiment 1 will be described below for the sake of convenience. This example 3 differs from example 1 in that: referring to fig. 2, a sealing groove matched with the expansion-type sealing element 6 is formed on one side, close to the rotor casing 1 and the stator casing 2, of each of the rotor casing and the stator casing, a color development cavity is formed in the outer wall of the sealing groove, a transparent failure color development strip is filled in the color development cavity, mixed color development particles are filled in the transparent failure color development strip, and the mixed color development particles are color development silica gel particles and WO₃The particles are mixed according to a certain proportion, and the outer layer of the transparent failure color development strip is a semi-permeable film. Make the color development reaction after 6 inefficacy to expansion type sealing member through transparent inefficacy color development strip, remind vehicle driver in time to maintain retarber body 11 to through the mixed color development of color development silica gel granule and WO3 granule, can produce the color development in expansion type sealing member 6 inefficacy earlier stage and remind, leave sufficient reaction time for vehicle driver, improve the security of retarber body 11 when using.

Based on the expansion method of embodiment 1, when the expansion type sealing member 6 has a failure point, the self-expansion bellows 7 at the two ends of the expansion stabilizing strut 602 can transmit current through the conductive knitting wool due to the exposure of the self-expansion bellows 7, so that the current can enter the color developing cavity and then pass through the semi-permeable film, and the WO is enabled to pass through the semi-permeable film₃The granule produces the colour development, make a warning to vehicle driver, after the continuation of expansion type sealing member 6 became invalid, the leakproofness of expansion type sealing member 6 is not enough, make the medium between rotor casing 1 and the stator casing 2 flow, and enter the colour development intracavity, and then pass the semi-permeable film, make the colour development silica gel granule produce the colour development, make secondary warning to vehicle driver, mode through dual warning, improve vehicle driver's vigilance, be convenient for in time maintain retarder body 11, reduce retarder body 11's damage degree, reduce retarder body 11's the degree of damage, reduce retarder body 11' sMaintenance costs.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.