1. The utility model provides a speed reducer pivot quick connect structure which characterized in that: the installation structure comprises a cylindrical installation barrel (1), wherein a first circular groove (101) coincident with the axis of the installation barrel is formed in one end face of the installation barrel (1), a plurality of key grooves (102) are formed in the circumferential surface of the first circular groove (101) along the circumferential direction of the first circular groove, and the key grooves (102) are axially arranged along the first circular groove (101); a second circular groove (103) coincident with the axis of the mounting cylinder is formed in the other end face of the mounting cylinder (1), and a sleeve (2) coincident with the axis of the second circular groove is arranged in the second circular groove (103) in a sliding fit mode along the axial direction of the second circular groove; a supporting spring (3) is fixedly connected between the end face of the sleeve (2) positioned in the second circular groove (103) and the end face of the second circular groove (103), and a third circular groove (201) coincident with the axis of the sleeve (2) is formed in the end face of the sleeve (2) positioned outside the second circular groove (103); a plurality of guide grooves (104) which are axially arranged are formed in the circumferential surface of the second circular groove (103), and a guide block (4) which is in sliding fit with the guide grooves (104) is fixedly arranged on the outer circumferential surface of the sleeve (2); a positioning ring (401) is arranged on the end face of the guide block (4), and the quick connecting structure of the rotating shaft of the speed reducer further comprises a positioning mechanism (5) matched with the positioning ring (401);

a plurality of clamping blocks (6) are uniformly arranged on the circumferential surface of the third circular groove (201) along the circumferential direction of the third circular groove, and the clamping blocks (6) are in sliding fit with the sleeve (2) along the radial direction of the third circular groove (201); a clamping plate (7) is fixedly mounted at the end part of the clamping block (6) positioned in the third circular groove (201), the clamping plate (7) is an arc-shaped plate, and the axis of the clamping plate (7) is superposed with the axis of the third circular groove (201); a return spring (8) is fixedly connected between the clamping plate (7) and the circumferential surface of the third circular groove (201); an auxiliary clamping mechanism (9) matched with the clamping block (5) is arranged on the sleeve (2).

2. The quick connecting structure of the rotating shaft of the speed reducer according to claim 1, characterized in that: the surface of the guide block (4) is provided with a plurality of rolling balls (402) which are matched with the side walls of the guide groove (104) in a rolling way.

3. The quick connecting structure of the rotating shaft of the speed reducer according to claim 1, characterized in that: the positioning mechanism (5) comprises a positioning rod (501) which is in sliding fit with the side wall of the mounting cylinder (1) and is matched with the positioning ring (401).

4. The quick connecting structure of the rotating shaft of the speed reducer according to claim 3, characterized in that: the surface of the positioning rod (501) positioned outside the installation barrel (1) is fixedly provided with a guide rod (502) which is axially arranged along the installation barrel (1), the outer circumferential surface of the installation barrel (1) is provided with an annular groove and is rotatably provided with a guide ring (503) coinciding with the axis of the installation barrel through the annular groove, and the surface of the guide ring (503) facing the guide rod (502) is provided with a guide chute (504) which is in sliding fit with the guide rod (502).

5. The quick connecting structure of the rotating shaft of the speed reducer according to claim 4, characterized in that: a positioning groove (505) is formed in the surface of the guide ring (503), a positioning cylinder (506) is fixedly mounted on the outer circumferential surface of the mounting cylinder (1), and a positioning block (507) matched with the positioning groove (505) is in sliding fit in the positioning cylinder (506); a positioning spring (508) is fixedly connected between the positioning block (507) and the end surface of the positioning groove (505).

6. The quick connecting structure of the rotating shaft of the speed reducer according to claim 1, characterized in that: the auxiliary clamping mechanism (9) comprises a thread groove (901) formed in the end face, located outside the second circular groove (103), of the sleeve (2), and a thread ring (902) is installed in the thread groove (901); a push rod (903) which is arranged along the axial direction of the sleeve (2) is fixedly arranged on the end surface of the threaded ring (902) positioned in the threaded groove (901) and corresponds to the position of the clamping block (6); a sliding groove (904) which is arranged along the axial direction of the sleeve (2) is formed in the end face of the threaded groove (901) and corresponds to the push rod (903), and a sliding block (905) is matched in the sliding groove (904) in a sliding mode; the sliding block (905) is in sliding fit with the clamping block (6), and the surface of the sliding block (905) in sliding fit with the clamping block (6) is an inclined surface.

7. The quick connecting structure of the rotating shaft of the speed reducer as claimed in claim 6, wherein: and a ball (906) is rotatably arranged on the end surface of the push rod (903) facing the slide block (905).

8. The quick connecting structure of the rotating shaft of the speed reducer according to claim 1, characterized in that: a plurality of sealing cylinders (10) are uniformly and fixedly arranged on the end face of the third circular groove (201) around the axis of the third circular groove, and an opening is formed in one side, away from the end face of the third circular groove (201), of each sealing cylinder (10); a first air groove (202) communicated with the sealing cylinder (10) is formed in the position, corresponding to the sealing cylinder (10), on the end face of the sleeve (2); and a second air groove (105) communicated with the second circular groove (103) is formed in the outer circumferential surface of the mounting cylinder (1), and a sealing screw rod (11) is mounted in the second air groove (105).

9. The quick connecting structure of the rotating shaft of the speed reducer according to claim 8, characterized in that: sealing piece (12) with second gas tank (105) sliding fit is installed in sealing screw (11) tip rotation, and fixed mounting has on the terminal surface of installation section of thick bamboo (1) and sleeve (2) sliding seal complex sealing ring (13).

Background

The reducer is an independent component consisting of gear transmission, worm transmission and gear-worm transmission enclosed in a rigid shell, and is commonly used as a speed reduction transmission device between a prime mover and a working machine. The speed reducer plays a role in matching rotating speed and transmitting torque between a prime motor and a working machine or an actuating mechanism, and is widely applied to modern machinery. The speed reducer comprises an input shaft and an output shaft, the input shaft of the speed reducer is connected with a motor shaft through a coupler, and the motor drives the input shaft of the speed reducer to rotate during working, and drives the output shaft of the speed reducer to rotate after speed reduction inside the speed reducer, so that an external transmission part is driven to rotate. After the speed reducer is produced, an input shaft of the speed reducer needs to be connected with a motor shaft through a coupler, and the motor drives the speed reducer to operate, so that the quality of the speed reducer is detected.

At present, when the motor shaft and the input shaft of the speed reducer are connected through the coupler, the positions of the motor and the speed reducer can only be pre-fixed due to the fact that the coincidence of the axes of the motor shaft and the input shaft of the speed reducer needs to be guaranteed, so that the split coupler can only be adopted for connection, the split coupler is troublesome to operate during installation, and the synchronous rotation of the motor shaft and the input shaft of the speed reducer is difficult to guarantee.

Disclosure of Invention

Technical problem to be solved

The invention provides a quick connecting structure for rotating shafts of a speed reducer, and aims to solve the problems that in the quality detection process of the speed reducer, when a split type coupler is adopted to connect a motor shaft and an input shaft of the speed reducer, the installation operation of the split type coupler is troublesome, and the synchronous rotation of the motor shaft and the input shaft of the speed reducer is difficult to ensure.

(II) technical scheme

In order to solve the technical problems, the invention adopts the following technical scheme:

the utility model provides a speed reducer pivot quick connect structure, includes a columniform installation section of thick bamboo, sets up the first circular slot rather than the axis coincidence on the terminal surface of installation section of thick bamboo, has seted up a plurality of keyway along its circumference on the periphery of first circular slot, and the keyway is arranged along first circular slot axial. And a second circular groove coincident with the axis of the mounting cylinder is formed in the other end face of the mounting cylinder, and a sleeve coincident with the axis of the mounting cylinder is arranged in the second circular groove in a sliding fit manner along the axial direction of the second circular groove. The sleeve is fixedly connected with a supporting spring between the end face located in the second circular groove and the end face of the second circular groove, and a third circular groove coincident with the axis of the sleeve is formed in the end face located outside the second circular groove. The circumferential surface of the second circular groove is provided with a plurality of guide grooves which are arranged along the axial direction of the second circular groove, and the outer circumferential surface of the sleeve is fixedly provided with a guide block which is in sliding fit with the guide grooves. The end face of the guide block is provided with a positioning ring, and the quick connecting structure of the rotating shaft of the speed reducer further comprises a positioning mechanism matched with the positioning ring.

The installation barrel is connected with the motor shaft through the matching of the connecting key and the key groove, the motor shaft and the installation barrel are in an axis superposition state, and the motor shaft can drive the installation barrel to synchronously rotate when rotating. And the sleeve is pushed to the inner side of the second circular groove to compress the supporting spring, and the guide block slides along the guide groove and plays a role in guiding the sleeve, so that the sleeve is ensured not to rotate. The sleeve is loosened after the speed reducer is placed at a preset position, the sleeve resets under the resilience force of the supporting spring, the guide block synchronously resets in the guide groove, the sleeve is sleeved on the input shaft of the speed reducer, and the third circular groove and the input shaft of the speed reducer are in an axis coincidence state.

And a plurality of clamping blocks are uniformly arranged on the circumferential surface of the third circular groove along the circumferential direction of the third circular groove, and the clamping blocks are in sliding fit with the sleeve along the radial direction of the third circular groove. The end part of the clamping block, which is positioned in the third circular groove, is fixedly provided with a clamping plate, and the clamping plate is an arc-shaped plate, and the axis of the clamping plate coincides with the axis of the third circular groove. A return spring is fixedly connected between the clamping plate and the circumferential surface of the third circular groove. An auxiliary clamping mechanism matched with the clamping block is arranged on the sleeve. The auxiliary clamping mechanism drives the clamping block to drive the clamping plate to clamp the input shaft of the speed reducer, and the reset spring is stretched. When the motor shaft rotates, the mounting cylinder, the guide block, the sleeve, the clamping block, the clamping plate and the input shaft of the speed reducer are driven to rotate synchronously. After the speed reducer is detected, the auxiliary clamping mechanism drives the clamping block to drive the clamping plate to release clamping on the input shaft of the speed reducer, then the sleeve is pushed to the inner side of the second circular groove to compress the supporting spring, and the speed reducer is moved away.

As a preferred technical scheme of the invention, a plurality of rolling balls which are in rolling fit with the side walls of the guide grooves are arranged on the surface of the guide block, so that the friction force between the guide block and the guide grooves is reduced, and the guide block is prevented from shaking in the guide grooves due to the abrasion of the guide grooves and the guide block, thereby ensuring that the sleeve does not rotate freely, and further ensuring the synchronous rotation of the motor shaft, the mounting cylinder, the sleeve and the input shaft of the speed reducer.

As a preferable technical solution of the present invention, the positioning mechanism includes a positioning rod slidably fitted on a side wall of the mounting cylinder and fitted with the positioning ring. After the clamping plate clamps the input shaft of the speed reducer, the positioning ring is positioned through the positioning rod, so that the guide block and the sleeve are axially positioned, the sleeve is ensured not to axially move with the input shaft of the speed reducer in the rotating process, and the clamping effect on the input shaft of the speed reducer is ensured.

As a preferred technical scheme of the present invention, the surface of the positioning rod located outside the mounting cylinder is fixedly provided with a guide rod arranged along the axial direction of the mounting cylinder, the outer circumferential surface of the mounting cylinder is provided with an annular groove and is rotatably provided with a guide ring coinciding with the axis of the mounting cylinder through the annular groove, and the surface of the guide ring facing the guide rod is provided with a guide chute in sliding fit with the guide rod. The guide chute is driven to synchronously rotate by rotating the guide belt, so that the guide rod and the positioning rod are pushed to move by the interaction of the guide chute and the guide rod, the synchronous adjustment of each positioning rod is realized, and the operation efficiency is improved.

As a preferred technical scheme of the invention, the surface of the guide ring is provided with a positioning groove, the outer circumferential surface of the installation cylinder is fixedly provided with a positioning cylinder, and a positioning block matched with the positioning groove is in sliding fit in the positioning cylinder. A positioning spring is fixedly connected between the positioning block and the end surface of the positioning groove. After the positioning rod is used for positioning the positioning ring, the positioning block is pressed in the positioning groove under the action of the positioning spring, so that the guide ring is prevented from rotating, and the positioning rod is guaranteed to always play a positioning role for the positioning ring.

As a preferable technical solution of the present invention, the auxiliary clamping mechanism includes a thread groove formed on an end surface of the sleeve located outside the second circular groove, and a thread ring is installed in the thread groove. The position of the end face of the threaded ring in the threaded groove, which corresponds to the clamping block, is fixedly provided with a push rod which is arranged along the axial direction of the sleeve. The end face of the thread groove is provided with a sliding groove which is arranged along the axial direction of the sleeve and corresponds to the push rod, and the sliding groove is internally matched with a sliding block in a sliding way. The sliding block is in sliding fit with the clamping block, and the surface of the sliding block in sliding fit with the clamping block is an inclined surface.

The push rod is driven to extend into the sliding groove and push the sliding block to slide along the sliding groove by rotating the threaded ring, and the sliding block pushes the clamping block to move in the sliding process of the sliding groove until the clamping plate abuts against the surface of the input shaft of the speed reducer. Because the position of screw ring in the thread groove can not take place to change, so can guarantee that the push rod supports all the time and presses on the slider, the slider supports all the time and presses on the grip block to guaranteed that the grip block supports all the time and presses on the speed reducer input shaft surface, guaranteed the centre gripping effect. When the clamping plate is used for clamping the input shaft of the speed reducer, the threaded ring only needs to be rotated reversely to drive the push rod to reset, the resilience force of the reset spring drives the clamping plate and the clamping block to reset, and the clamping block pushes the sliding block to reset.

As a preferable technical scheme of the invention, the end face of the push rod facing the slide block is rotatably provided with the ball, so that the friction force between the push rod and the slide block is reduced, the abrasion is avoided, and the service life is prolonged.

As a preferable technical scheme of the invention, a plurality of sealing cylinders are uniformly and fixedly arranged on the end face of the third circular groove around the axis of the third circular groove, and an opening is formed on one side of each sealing cylinder, which is far away from the end face of the third circular groove. The position of the sleeve end face corresponding to the sealing barrel is provided with a first air groove communicated with the sealing barrel. And a second air groove communicated with the second circular groove is formed in the outer circumferential surface of the mounting cylinder, and a sealing screw rod is installed in the second air groove. After the sleeve is reset, the opening of the sealing cylinder is pressed on the end face of the input shaft of the speed reducer. After the input shaft of the speed reducer is clamped and fixed, the air pressure in the second circular groove, the guide groove and the second air groove is reduced by rotating the sealing screw rod, the air pressure in the first air groove and the sealing cylinder is also reduced synchronously, and therefore the input shaft of the speed reducer is tightly sucked on the sealing cylinder through the air pressure action. When the sleeve rotates, the sealing barrel synchronously rotates, so that the synchronous rotation of the motor shaft, the mounting barrel, the sleeve and the input shaft of the speed reducer is further ensured.

As a preferred technical solution of the present invention, the end of the sealing screw is rotatably mounted with a sealing sheet in sliding fit with the second air groove, and the end surface of the mounting cylinder is fixedly mounted with a sealing ring in sliding seal fit with the sleeve, so as to ensure the sealing effect of the second circular groove, the guide groove and the second air groove.

(III) advantageous effects

The invention has at least the following beneficial effects:

(1) the connecting key is fixedly connected to the motor shaft in advance, when the input shaft of the speed reducer is connected, the sleeve is compressed firstly, the speed reducer is placed and then released, the sleeve is sleeved on the input shaft of the speed reducer under the action of the supporting spring, and then the clamping plate clamps the input shaft of the speed reducer through the auxiliary clamping mechanism.

(2) The invention axially fixes the positions of the guide block and the sleeve through the positioning mechanism, and ensures that the clamping plate arranged on the sleeve and the input shaft of the speed reducer cannot relatively move in the rotation process of the motor shaft, thereby ensuring the clamping effect of the clamping plate on the input shaft of the speed reducer and further ensuring the synchronous rotation of the motor shaft, the mounting cylinder and the input shaft of the sleeve speed reducer.

(3) The end face of the input shaft of the speed reducer is tightly sucked on the sealing cylinder under the action of air pressure, and the sealing cylinder, the sleeve, the mounting cylinder and the motor shaft rotate synchronously, so that the synchronous rotation of the motor shaft, the mounting cylinder and the input shaft of the sleeve speed reducer is further ensured.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a first schematic perspective view of a quick connection structure of a rotating shaft of a speed reducer according to an embodiment of the invention;

FIG. 2 is a second perspective view of a fast connecting structure of a rotating shaft of a speed reducer according to an embodiment of the present invention;

FIG. 3 is a side view of the internal structure of the quick connection structure for the rotating shaft of the speed reducer according to the embodiment of the present invention;

FIG. 4 is an enlarged schematic view at A in FIG. 3;

FIG. 5 is an enlarged schematic view at B in FIG. 3;

fig. 6 is a schematic structural diagram of a sleeve and a guide block in an embodiment of the invention.

In the figure: 1-installation cylinder, 101-first circular groove, 102-key groove, 103-second circular groove, 104-guide groove, 105-second air groove, 2-sleeve, 201-third circular groove, 202-first air groove, 3-supporting spring, 4-guide block, 401-positioning ring, 402-rolling ball, 5-positioning mechanism, 501-positioning rod, 502-guide rod, 503-guide ring, 504-guide chute, 505-positioning groove, 506-positioning cylinder, 507-positioning block, 508-positioning spring, 6-clamping block, 7-clamping plate, 8-reset spring, 9-auxiliary clamping mechanism, 901-threaded groove, 902-threaded ring, 903-push rod, 904-sliding groove, 905-sliding block, 906-ball, 10-sealing cylinder, 11-sealing screw, 12-sealing sheet and 13-sealing ring.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

As shown in fig. 1 to 6, the present embodiment provides a speed reducer rotating shaft quick connection structure, which includes a cylindrical mounting barrel 1, a first circular groove 101 coinciding with an axis of the mounting barrel 1 is formed on one end surface of the mounting barrel 1, a plurality of key slots 102 are formed on a circumferential surface of the first circular groove 101 along a circumferential direction thereof, and the key slots 102 are axially arranged along the first circular groove 101. The other end face of the mounting cylinder 1 is provided with a second circular groove 103 coinciding with the axis of the mounting cylinder, and a sleeve 2 coinciding with the axis of the mounting cylinder is arranged in the second circular groove 103 in a sliding fit along the axial direction of the second circular groove. The sleeve 2 is fixedly connected with a supporting spring 3 between the end surface in the second circular groove 103 and the end surface of the second circular groove 103, and a third circular groove 201 coincident with the axis of the sleeve 2 is formed in the end surface outside the second circular groove 103. The circumferential surface of the second circular groove 103 is provided with a plurality of guide grooves 104 arranged along the axial direction, and the outer circumferential surface of the sleeve 2 is fixedly provided with a guide block 4 in sliding fit with the guide grooves 104. The surface mounting of guide block 4 has a plurality of and guide way 104 lateral wall roll complex spin 402 to reduce the frictional force between guide block 4 and the guide way 104, avoid guide way 104 and guide block 4 to take place the condition emergence that wearing and tearing lead to guide block 4 to rock in guide way 104, thereby guaranteed that sleeve 2 can not take place the free rotation, and then guaranteed the synchronous rotation of motor shaft, installation section of thick bamboo 1, sleeve 2 and speed reducer input shaft. The end face of the guide block 4 is provided with a positioning ring 401, and the quick connecting structure of the rotating shaft of the speed reducer further comprises a positioning mechanism 5 matched with the positioning ring 401.

The positioning mechanism 5 includes a positioning rod 501 slidably fitted on the side wall of the mounting tube 1 and engaged with the positioning ring 401. The surface of the positioning rod 501, which is located outside the mounting tube 1, is fixedly provided with a guide rod 502 which is axially arranged along the mounting tube 1, the outer circumferential surface of the mounting tube 1 is provided with an annular groove and is rotatably provided with a guide ring 503 which is overlapped with the axis of the annular groove, and the surface of the guide ring 503, which faces the guide rod 502, is provided with a guide chute 504 which is in sliding fit with the guide rod 502. The surface of the guide ring 503 is provided with a positioning groove 505, the outer circumferential surface of the installation cylinder 1 is fixedly provided with a positioning cylinder 506, and a positioning block 507 which is matched with the positioning groove 505 is in sliding fit in the positioning cylinder 506. A positioning spring 508 is fixedly connected between the positioning block 507 and the end surface of the positioning groove 505.

A plurality of clamping blocks 6 are uniformly arranged on the circumferential surface of the third circular groove 201 along the circumferential direction, and the clamping blocks 6 are in sliding fit with the sleeve 2 along the radial direction of the third circular groove 201. The end part of the clamping block 6 in the third circular groove 201 is fixedly provided with a clamping plate 7, and the clamping plate 7 is an arc-shaped plate and the axis of the clamping plate 7 coincides with the axis of the third circular groove 201. A return spring 8 is fixedly connected between the clamping plate 7 and the circumferential surface of the third circular groove 201. The sleeve 2 is provided with an auxiliary clamping mechanism 9 matched with the clamping block 5.

The auxiliary clamping mechanism 9 includes a threaded groove 901 formed in an end surface of the sleeve 2 located outside the second circular groove 103, and a threaded ring 902 is mounted in the threaded groove 901. A push rod 903 arranged along the axial direction of the sleeve 2 is fixedly arranged on the end surface of the threaded ring 902 positioned in the threaded groove 901 at a position corresponding to the clamping block 6. The end face of the thread groove 901 corresponding to the push rod 903 is provided with a sliding groove 904 arranged along the axial direction of the sleeve 2, and a sliding block 905 is in sliding fit in the sliding groove 904. The sliding block 905 is in sliding fit with the clamping block 6, and the sliding surface of the sliding block 905 in sliding fit with the clamping block 6 is an inclined surface. The push rod 903 rotatably mounts the ball 906 to an end surface of the slider 905.

The auxiliary clamping mechanism 9 drives the clamping block 5 to drive the clamping plate 7 to clamp the input shaft of the speed reducer, and the return spring 8 is stretched. When the motor shaft rotates, the mounting cylinder 1, the guide block 4, the sleeve 2, the clamping block 5, the clamping plate 7 and the input shaft of the speed reducer are driven to synchronously rotate. After the speed reducer is detected, the auxiliary clamping mechanism 9 drives the clamping block 5 to drive the clamping plate 7 to release the clamping of the input shaft of the speed reducer, then the sleeve 2 is pushed to the inner side of the second circular groove 103 to compress the supporting spring 3, and the speed reducer is moved away.

After the grip block 7 finishes the speed reducer input shaft clamping, drive the synchronous rotation of direction chute 504 through rotating guide ring 503, thereby promote guide bar 502 and locating lever 501 to remove through the interaction of direction chute 504 and guide bar 502, in order to realize the synchronous adjustment to each locating lever 501, fix a position holding ring 401 through locating lever 501, thereby carry out axial positioning to guide block 4 and sleeve 2's position, ensure that sleeve 2 rotates the in-process and can not take place axial displacement with the speed reducer input shaft, thereby guaranteed the clamping effect to the speed reducer input shaft. After the positioning rod 501 positions the positioning ring 401, the positioning block 507 is pressed in the positioning groove 505 under the action of the positioning spring 508, so that the guide ring 503 is prevented from rotating, and the positioning rod 501 is ensured to always play a role in positioning the positioning ring 401.

The push rod 903 is driven to extend into the sliding groove 904 and push the sliding block 905 to slide along the sliding groove 904 by rotating the threaded ring 902, and the sliding block 905 pushes the clamping block 6 to move in the sliding process along the sliding groove 904 until the clamping plate 7 abuts against the surface of the input shaft of the speed reducer. Because the position of the threaded ring 902 in the threaded groove 901 does not change, the push rod 903 can be guaranteed to be always pressed on the sliding block 905, and the sliding block 905 is always pressed on the clamping block 6, so that the clamping plate 7 is guaranteed to be always pressed on the surface of the input shaft of the speed reducer, and the clamping effect is guaranteed. When the clamping of the clamping plate 7 on the input shaft of the speed reducer is released, the threaded ring 902 is rotated reversely to drive the push rod 903 to reset, the resilience force of the return spring 8 drives the clamping plate 7 and the clamping block 6 to reset, and the clamping block 6 pushes the sliding block 905 to reset.

A plurality of sealing cylinders 10 are uniformly and fixedly mounted on the end face of the third circular groove 201 around the axis of the third circular groove, and an opening is formed in one side, away from the end face of the third circular groove 201, of each sealing cylinder 10. The end surface of the sleeve 2 corresponding to the sealing cylinder 10 is provided with a first air groove 202 communicated with the sealing cylinder 10. The outer circumference of the mounting tube 1 is provided with a second air groove 105 communicated with the second circular groove 103, and a sealing screw 11 is mounted in the second air groove 105. The end of the sealing screw 11 is rotatably provided with a sealing sheet 12 in sliding fit with the second air groove 105, and the end face of the mounting cylinder 1 is fixedly provided with a sealing ring 13 in sliding seal fit with the sleeve 2, so as to ensure the sealing effect of the second circular groove 103, the guide groove 104 and the second air groove 105. After the sleeve 2 is reset, the opening of the sealing cylinder 10 is pressed against the end face of the input shaft of the speed reducer. After the input shaft of the speed reducer is clamped and fixed, the air pressure in the second circular groove 103, the guide groove 104 and the second air groove 105 is reduced by rotating the sealing screw rod 11, and the air pressure in the first air groove 202 and the sealing cylinder 10 is also reduced synchronously, so that the input shaft of the speed reducer is tightly sucked on the sealing cylinder 10 through the action of the air pressure. When the sleeve 2 rotates, the sealing barrel 10 synchronously rotates, so that synchronous rotation of the motor shaft, the mounting barrel 1, the sleeve 2 and the input shaft of the speed reducer is further ensured.

The use process of the quick connecting structure for the rotating shaft of the speed reducer in the embodiment is as follows: the installation cylinder 1 is connected with the motor shaft through the matching of the connecting key and the key groove 102, the motor shaft and the installation cylinder 1 are in an axis superposition state, and the motor shaft can drive the installation cylinder 1 to synchronously rotate when rotating. The sleeve 2 is pushed to the inner side of the second circular groove 103 to compress the supporting spring 3, and the guide block 4 slides along the guide groove 104 and plays a guiding role on the sleeve 2, so that the sleeve 2 is ensured not to rotate. The speed reducer is placed at a preset position, the sleeve 2 is loosened, the sleeve 2 resets under the resilience force of the supporting spring 3, the guide block 4 synchronously resets in the guide groove 104, the sleeve 2 is sleeved on the input shaft of the speed reducer, and the third circular groove 201 and the input shaft of the speed reducer are in an axis coincidence state. The air pressure in the second circular groove 103, the guide groove 104 and the second air groove 105 is reduced by rotating the sealing screw 11, and the air pressure in the first air groove 202 and the sealing cylinder 10 is also reduced synchronously, so that the input shaft of the speed reducer is tightly sucked on the sealing cylinder 10 through the action of the air pressure.

The push rod 903 is driven to extend into the sliding groove 904 and push the sliding block 905 to slide along the sliding groove 904 by rotating the threaded ring 902, and the sliding block 905 pushes the clamping block 6 to move in the sliding process along the sliding groove 904 until the clamping plate 7 abuts against the surface of the input shaft of the speed reducer to clamp the input shaft of the speed reducer. After the clamping plate 7 finishes the speed reducer input shaft clamping, the guide chute 504 is driven to rotate synchronously through the rotation of the guide ring 503, so that the guide rod 502 and the positioning rod 501 are pushed to move through the interaction of the guide chute 504 and the guide rod 502, the positioning ring 401 is positioned through the positioning rod 501, the axial positioning is carried out on the positions of the guide block 4 and the sleeve 2, and the axial movement cannot occur to the speed reducer input shaft in the rotation process of the sleeve 2. After the positioning rod 501 positions the positioning ring 401, the positioning block 507 is pressed against the positioning groove 505 by the positioning spring 508.

When the motor shaft rotates, the mounting cylinder 1, the guide block 4 and the sleeve 2 are driven to synchronously rotate through the connecting key, and the sleeve 2 drives the input shaft of the speed reducer to synchronously rotate through the clamping block 6 and the clamping plate 7. After the detection is finished, the push rod 903 is driven to reset by reversely rotating the threaded ring 902, the clamping plate 7 and the clamping block 6 are driven to reset by the resilience force of the reset spring 8, and the sliding block 905 is driven to reset by the clamping block 6. The reverse rotation of the sealing screw 11 causes the air pressure in the second circular groove 103, the guide groove 104 and the second air groove 105 to be restored. The sleeve 2 is pushed towards the inner side of the second circular groove 103 to compress the supporting spring 3, and the sleeve 2 is loosened after the speed reducer is moved away.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.