1. A high liquid limit soil filling compaction method is characterized in that; the method comprises the following steps:

paving high liquid limit soil, and spreading the high liquid limit soil to a soil foundation;

rolling, namely rolling the high liquid limit soil by using a sheep foot roller;

the sheep foot roller comprises a convex block (200), wherein in the rolling step, the convex block (200) is extended out when high liquid limit soil is rolled, and the convex block (200) is retracted after the rolling is finished.

2. The high liquid limit soil filling compaction method according to claim 1, characterized in that: the sheep foot grinds still includes cylinder (100), cylinder (100) include barrel (110), offer the confession on barrel (110) protruding block hole (111) that lug (200) passed, be provided with in barrel (110) and be used for the drive actuating mechanism (300) of lug (200) motion, actuating mechanism (300) are used for the drive lug (200) are followed stretch out or withdraw in protruding block hole (111).

3. The high liquid limit soil filling compaction method according to claim 2, characterized in that: actuating mechanism (300) include main shaft (310), actuating lever (320) and flexbile gear (330), cylinder (100) rotate and set up on main shaft (310), flexbile gear (330) wear to establish main shaft (310) with between barrel (110), actuating lever (320) set up on main shaft (310) and be vertical setting, the both ends of actuating lever (320) with the inner peripheral surface butt of flexbile gear (330), lug (200) fixed connection be in on the outer peripheral face of flexbile gear (330).

4. The high liquid limit soil filling compaction method according to claim 3, characterized in that: the two end faces of the lug (200) in the circumferential direction of the cylinder body (110) are arranged in an involute shape.

5. The high liquid limit soil filling compaction method according to claim 3, characterized in that: the driving mechanism (300) further comprises two driving rollers (340), the two driving rollers (340) are respectively rotatably arranged at two ends of the driving rod (320), and the driving rollers (340) are in rolling connection with the inner circumferential surface of the flexible wheel (330).

6. The high liquid limit soil filling compaction method according to claim 3, characterized in that: the inner circumferential surface of the cylinder body (110) is provided with teeth, the outer circumferential surface of the flexible gear (330) is also provided with teeth, and the flexible gear (330) is internally engaged with the cylinder body (110).

7. The high liquid limit soil filling compaction method according to any one of claims 3 to 6, wherein: the driving rod (320) is rotatably connected with the main shaft (310), and the main shaft (310) is further provided with a rotating mechanism (400) for driving the driving rod (320) to rotate.

8. The high liquid limit soil filling compaction method of claim 7, wherein: the rotating mechanism (400) comprises a driving motor (410), a first gear (420) and a second gear (430), the driving motor (410) is arranged on the spindle (310), the first gear (420) is fixedly connected to an output shaft of the driving motor (410), the second gear (430) is coaxially sleeved on the spindle (310), the second gear (430) is fixedly connected with the driving rod (320), and the first gear (420) is meshed with the second gear (430).

9. The high liquid limit soil filling compaction method of claim 7, wherein: the main shaft (310) is also provided with a locking mechanism (500) for locking the driving rod (320).

10. The high liquid limit soil filling compaction method of claim 9, wherein: main shaft (310) is hollow setting, locking mechanical system (500) are including locking piece (510), drive block (520) and pneumatic cylinder (530), locking piece (510) are followed the radial of main shaft (310) with main shaft (310) slide and connect, drive block (520) fixed connection be in on the piston rod of pneumatic cylinder (530), pneumatic cylinder (530) fixed connection be in main shaft (310), drive block (520) with locking piece (510) transmission is connected, locking groove (322) have been seted up on actuating lever (320), locking piece (510) can with locking groove (322) joint.

Background

The sheep foot roller is a road roller with a plurality of convex blocks arranged on a roller, and the convex blocks are called sheep foot roller and also called sheep foot roller because of being similar to sheep feet in shape. The shape of the convex block is sheep foot shape, cylindrical shape, square column shape, etc. The sheep foot roller has large unit pressure, so the compaction degree is large, and the sheep foot roller has a tamping effect, so the sheep foot roller is suitable for compacting viscous soil and a rubble layer. Especially for hard clay, the bumps have stirring, kneading and tamping effects, so that the filler is uniform. The soil surface compacted by the sheep foot roller forms a large number of sheep foot pits, which is beneficial to the combination of the upper soil layer and the lower soil layer and avoids the layering of the upper and lower layers. Therefore, the sheep foot roller is widely used for compacting roadbeds, cushions, dams and other projects. Because the sheep foot roller has the advantages, the high liquid limit soil is compacted by the sheep foot roller mostly.

In view of the above-mentioned related art, the inventor believes that when the high liquid limit soil is compacted by using the sheep foot roller, the high liquid limit soil just compacted is loosened when the bump is pulled out of the soil from the rear of the travel, so that the high liquid limit soil cannot be actually compacted.

Disclosure of Invention

In order to improve the compaction degree of the high liquid limit soil, the application provides a high liquid limit soil filling compaction method.

The application provides a high liquid limit soil filling compaction method, adopts following technical scheme:

a high liquid limit soil filling compaction method comprises the following steps:

paving high liquid limit soil, and spreading the high liquid limit soil to a soil foundation;

rolling, namely rolling the high liquid limit soil by using a sheep foot roller;

the sheep foot roller comprises a convex block, wherein in the rolling step, the convex block is extended out when the high liquid limit soil is rolled, and the convex block is retracted after the rolling is finished.

Through adopting above-mentioned technical scheme, having laid high liquid limit soil and having used the sheep foot to grind at once and carry out the compaction, stretch out the lug when rolling high liquid limit soil, pack up the lug after rolling the completion, just so by the compaction high liquid limit soil just be difficult for by the lug pine, improved the degree of compaction of high liquid limit soil.

Optionally, the sheep foot grinds still includes the cylinder, the cylinder includes the barrel, set up the confession on the barrel the lug hole that the lug passed, be provided with in the barrel and be used for the drive the actuating mechanism of lug motion, actuating mechanism is used for the drive the lug is followed stretch out or withdraw in the lug hole.

Through adopting above-mentioned technical scheme, at the in-process of compaction high liquid limit soil, the lowermost extreme and the contact of high liquid limit soil of barrel, actuating mechanism drives the lug that is located the lowermost end all the time and stretches out from the lug hole, so alright roll high liquid limit soil, along with the roll of barrel, the position of lug also can change, the new lug that is located the lowermost end stretches out from the lug this moment, the lug that is located the lowermost end in the normal position no longer is located the lowermost end, this lug of actuating mechanism drive is withdrawed, the high liquid limit soil that just has so compacted is difficult for being turned over the pine by the lug, the degree of compaction of high liquid limit soil has been improved.

Optionally, the driving mechanism includes a main shaft, a driving rod and a flexible gear, the roller is rotatably arranged on the main shaft, the flexible gear is arranged between the main shaft and the cylinder body in a penetrating manner, the driving rod is arranged on the main shaft and vertically arranged, two ends of the driving rod are abutted to the inner circumferential surface of the flexible gear, and the bump is fixedly connected to the outer circumferential surface of the flexible gear.

Through adopting above-mentioned technical scheme, when initial condition, be located the lug that the flexbile gear is lowermost and stretch out to outside the barrel from the lug hole, the barrel can drive the flexbile gear when rotating and rotate, and the actuating lever drive is located the lug that the flexbile gear is lowermost and stretches out from the lug hole this moment all the time, and the lug that is not located the flexbile gear is withdrawed from the lug hole under the deformation effect of flexbile gear, and the high liquid limit soil that just so compacts is difficult just to be turned over by the lug and loosens, has improved the compactness of high liquid limit soil.

Optionally, the two end faces of the lug in the circumferential direction of the cylinder body are arranged in an involute shape.

Through adopting above-mentioned technical scheme, when the lug need stretch out or withdraw from the lug hole, the lug is difficult for the card to die in the lug hole, has improved the reliability that the sheep foot ground.

Optionally, the driving mechanism further includes two driving rollers, the two driving rollers are respectively rotatably disposed at two ends of the driving rod, and the driving rollers are in rolling connection with the inner circumferential surface of the flexible gear.

Through adopting above-mentioned technical scheme, use the drive roller to replace the actuating lever to contact with the flexbile gear, reduced the frictional force that the flexbile gear received, prolonged the life-span of flexbile gear.

Optionally, the inner circumferential surface of the cylinder is provided with teeth, the outer circumferential surface of the flexible gear is also provided with teeth, and the flexible gear is engaged with the cylinder.

By adopting the technical scheme, in the process that the flexible gear and the main shaft rotate relatively, the bottommost end of the flexible gear is always meshed with the cylinder body, so that the linear speeds of the flexible gear and the cylinder body at the bottommost end can be kept the same, the lugs are conveniently aligned with the lug holes one by one, and the lugs are conveniently extended out of the lug holes.

Optionally, the driving rod is rotatably connected to the main shaft, and the main shaft is further provided with a rotating mechanism for driving the driving rod to rotate.

By adopting the technical scheme, when high liquid limit soil needs to be rolled, the rotating mechanism drives the driving rod to rotate, so that the driving rod is not kept in a vertical state any more, and thus, the bump cannot extend out of the barrel at the bottommost end of the barrel under the action of the driving rod; when the vehicle runs from a normal road surface, the bumps are not easy to cause secondary damage to the normal road surface.

Optionally, the rotating mechanism includes a driving motor, a first gear and a second gear, the driving motor is disposed on the main shaft, the first gear is fixedly connected to an output shaft of the driving motor, the second gear is coaxially sleeved on the main shaft, the second gear is fixedly connected to the driving rod, and the first gear is engaged with the second gear.

Through adopting above-mentioned technical scheme, driving motor rotates and then drives first gear revolve, alright make the actuating lever rotate around the main shaft under the transmission of first gear and second gear, so the actuating lever alright no longer keep vertical state.

Optionally, the main shaft is further provided with a locking mechanism for locking the driving rod, and the locking mechanism is arranged on the main shaft.

Through adopting above-mentioned technical scheme, when the actuating lever is in vertical state, locking mechanical system can lock the actuating lever for the actuating lever is difficult for taking place relative rotation with the main shaft, so when needs roll high liquid limit soil, makes the lug stretch out the barrel at the lower extreme of barrel all the time, has improved and has rolled the effect.

Optionally, the main shaft is hollow setting, locking mechanical system includes locking piece, drive block and pneumatic cylinder, the locking piece is followed the main shaft radially with the main shaft slides and connects, drive block fixed connection be in on the piston rod of pneumatic cylinder, pneumatic cylinder fixed connection be in the main shaft, the drive block with the locking piece transmission is connected, the locking groove has been seted up on the actuating lever, the locking piece can with locking groove joint.

By adopting the technical scheme, when the driving rod needs to be locked, the driving mechanism is firstly used for rotating the driving rod to the vertical state, then the hydraulic cylinder drives the driving block to enable the locking block to extend out of the main shaft and be clamped in the locking groove, and therefore the driving rod cannot rotate relative to the main shaft; when the mucus is high in liquid and limited in soil, the lug can extend out of the barrel from the lowest end of the barrel all the time, so that the rolling effect is improved.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the convex block is extended out when the high liquid limit soil is rolled, and the convex block is folded after the rolling is finished, so that the high liquid limit soil which is just compacted is not easy to be loosened by the convex block, and the compaction degree of the high liquid limit soil is improved.

2. Through actuating mechanism's setting, actuating mechanism drives the lug that is located the lowermost end all the time and stretches out from the lug hole, so alright roll high liquid limit soil, along with the roll of barrel, the position of lug also can change, the new lug that is located the lowermost end stretches out from the lug this moment, the normal position no longer is located the lowermost end in the lowermost lug, this lug of actuating mechanism drive is withdrawed, the high liquid limit soil that has just so compacted is difficult for being turned over by the lug and loosens, the compaction degree of high liquid limit soil has been improved.

3. Through the arrangement of the rotating mechanism, when high liquid limit soil needs to be rolled, the rotating mechanism drives the driving rod to rotate, so that the driving rod is not kept in a vertical state any more, and thus, under the action of the driving rod, the bump cannot extend out of the barrel body from the bottommost end of the barrel body; when the vehicle runs from a normal road surface, the bumps are not easy to cause secondary damage to the normal road surface.

4. Through locking mechanical system's setting, when the actuating lever is in vertical state, locking mechanical system can lock the actuating lever for the actuating lever is difficult to take place relative rotation with the main shaft, so when needs roll high liquid limit soil, makes the lug stretch out the barrel at the lower extreme of barrel all the time, has improved and has rolled the effect.

Drawings

FIG. 1 is a schematic flow chart diagram of an embodiment of the present application;

FIG. 2 is a schematic view of the overall structure of the sheep foot roller in the embodiment of the present application;

FIG. 3 is a partial schematic structural view of the sheep foot roller without the end cover, aiming at showing the structure of the driving mechanism;

FIG. 4 is a schematic structural diagram of a turning mechanism on the sheep foot roller according to the embodiment of the application;

FIG. 5 is a schematic cross-sectional view of the locking mechanism on the sheep foot mill in an embodiment of the present application;

fig. 6 is a schematic cross-sectional view of a reduction assembly on a sheep foot roll according to an embodiment of the present application.

Description of reference numerals: 100. a drum; 110. a barrel; 111. a boss hole; 120. an end cap; 200. a bump; 300. a drive mechanism; 310. a main shaft; 320. a drive rod; 321. a collar portion; 322. a locking groove; 330. a flexible gear; 340. a drive roller; 400. a rotating mechanism; 410. a drive motor; 420. a first gear; 430. a second gear; 500. a locking mechanism; 510. a locking block; 511. a first guide surface; 520. a drive block; 521. a second guide surface; 530. a hydraulic cylinder; 600. a reset assembly; 610. connecting blocks; 620. compressing the spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Since the lug 200 of the sheep foot roller is a part which plays a main role in rolling high liquid limit soil, when the lug 200 rolls on the high liquid limit soil, a 'sheep foot pit' appears on the high liquid limit soil. During the process of the sheep foot roller, the lug 200 can be pulled out of the sheep foot pit at the rear of the running process, and the process of pulling the lug 200 out of the sheep foot pit can loosen the high liquid limit soil at the rear of the sheep foot pit, so that the high liquid limit soil can not be compacted actually.

Therefore, the embodiment of the application discloses a high liquid limit soil filling and compacting method. Referring to fig. 1, the high liquid limit soil filling compaction method comprises the following steps:

s1: paving high liquid limit soil, flatly paving the high liquid limit soil on a soil foundation, and flatly paving the high liquid limit soil to form a high liquid limit soil layer;

s2: rolling, namely rolling the high liquid limit soil by using a sheep foot roller; the sheep foot roller comprises a convex block 200, wherein the convex block 200 extends out when high liquid limit soil is rolled, the convex block 200 is rolled on the high liquid limit soil to enable a sheep foot pit to appear on the high liquid limit soil, and the high liquid limit soil is rolled at the moment; when the bump 200 needs to be pulled out from the sheep foot pit, the bump 200 is gradually retracted, so that high liquid limit soil behind the sheep foot pit is not easy to loosen in the process of pulling the bump 200 out of the sheep foot pit, and the rolling effect is further improved.

Referring to fig. 2 and 3, the sheep foot roller further comprises a roller 100, wherein the roller 100 comprises a cylinder 110 and end plates arranged at two ends of the cylinder 110, and the end plates are arranged in the cylinder 110 in a penetrating manner and fixedly connected with the cylinder 110 through bolts. The lug 200 of sheep foot grinding is arranged inside the barrel 110, lug holes 111 for the lug 200 to pass through are uniformly formed in the axial direction and the circumferential direction of the barrel 110, and a driving mechanism 300 for driving the lug 200 to extend or retract the lug 200 from the lug holes 111 is further arranged inside the barrel 110.

In the process of rotating the roller 100, the driving mechanism 300 pushes the bump 200 positioned at the lowest end out of the bump hole 111 at the lowest end, so that the bump 200 can be contacted with the high liquid limit soil to roll the high liquid limit soil, and a 'sheep foot pit' appears on the high liquid limit soil; as the barrel 110 rolls over the high liquid limit soil, the projection 200 needs to be pulled out of the "sheep foot well", and at this time, the driving mechanism 300 retracts the projection 200 from the projection hole 111, so that the high liquid limit soil behind the "sheep foot well" is not easily loosened in the process of pulling the projection 200 out of the "sheep foot well".

Referring to fig. 2 and 3, the extending timing of the protrusion 200 directly affects the rolling effect of the sheep foot roller, and in order to make the extending and retracting of the protrusion 200 more periodic, and further facilitate the operation of the sheep foot roller by the operator, the driving mechanism 300 includes a main shaft 310, a driving rod 320 and a flexible wheel 330. The main shaft 310 coaxially penetrates through the cylinder 110, and the cylinder 110 is rotatably connected to the main shaft 310 through an end plate. The section of the flexible gear 330 is disposed in an elliptical shape, and the flexible gear 330 is disposed between the main shaft 310 and the cylinder 110. The bumps 200 are fixedly connected to the outer circumferential surface of the flexible gear 330 through bolts, the bumps 200 are uniformly distributed in the axial direction and the circumferential direction of the flexible gear 330, and the distance between the two rows of bumps 200 in the circumferential direction of the flexible gear 330 is the same as the distance between the two rows of bump holes 111 in the circumferential direction of the cylinder 110.

Referring to fig. 2 and 3, two driving rods 320 are provided, the two driving rods 320 are respectively disposed at two axial ends of the main shaft 310, and both the two driving rods 320 are vertically disposed on the main shaft 310. Both ends of the driving rod 320 in the length direction abut against the inner circumferential surface of the flexible gear 330, and under the supporting action of the driving rod 320 and the elastic force of the flexible gear 330, the section of the flexible gear 330 is made to be elliptical, and the major axis of the ellipse is kept in a vertical state. Under the supporting action of the driving rod 320, the bottom line of the outer peripheral surface of the flexible gear 330 abuts against the bottom line of the inner peripheral surface of the cylinder 110.

In the initial state, the bump 200 at the lowermost end of the flexible gear 330 protrudes from the bump hole 111 at the lowermost end of the cylinder 110 to the outside of the cylinder 110. When the sheep foot rolls, the barrel 110 rolls, and at this time, the barrel 110 drives the flexible gear 330 to rotate, the bump 200 located at the lowest end of the flexible gear 330 is no longer located at the lowest end of the flexible gear 330 under the rotation action of the flexible gear 330, and under the deformation action of the flexible gear 330, the bump 200 is retracted from the bump hole 111 into the barrel 110. As the flexible gear 330 rotates, a new bump 200 at the lowest end of the flexible gear 330 extends out of the cylinder 110 under the pushing action of the driving rod 320; because the lug 200 is the equipartition setting in the circumferencial direction of flexbile gear 330, the linear velocity of barrel 110 bottommost is the same all the time with the linear velocity of flexbile gear 330 bottommost moreover, so as long as barrel 110 takes place to rotate, lug 200 alright with periodic stretching out from barrel 110, and then make "sheep foot hole" on the high liquid limit soil be evenly arranged, improved the effect that rolls of sheep foot.

Referring to fig. 3, if both ends of the driving rod 320 in the length direction are directly abutted to the inner circumferential surface of the flexible gear 330, not only the friction between the driving rod 320 and the flexible gear 330 is large, and the mechanical efficiency is reduced, but also the cam at the upper middle part of the flexible gear 330 in the axial direction is not easily extended out of the cylinder 110, and the grinding uniformity of the sheep foot is reduced. For this purpose, a driving roller 340 is further interposed between the two driving rods 320, and both ends of the driving roller 340 are respectively rotatably connected to the two driving rods 320. Two driving rollers 340 are provided, the two driving rollers 340 are respectively provided at both ends of the driving rod 320 in the longitudinal direction, and the outer circumferential surface of the driving roller 340 is in rolling connection with the inner circumferential surface of the flexspline 330. Therefore, sliding friction between the driving rod 320 and the flexible gear 330 is changed into rolling friction, and the mechanical efficiency is improved; the driving roller 340 positioned below can also press the flexible gear 330 to deform, so that the cam at the upper middle part of the flexible gear 330 in the axial direction can extend out of the cylinder 110 more easily, and the uniformity of the sheep foot grinding is further improved.

Referring to fig. 3, when the bumps 200 are arranged densely in the circumferential direction of the flexible gear 330, the bump holes 111 need to be arranged densely in the circumferential direction of the cylinder 110, which weakens the strength of the cylinder 110; when the bumps 200 are sparsely arranged in the circumferential direction of the flexible gear 330, a situation may occur that the bump 200 positioned at the lowest end of the flexible gear 330 is retracted from the bump hole 111 into the cylinder 110, and then the subsequent bumps 200 cannot be extended out of the bump hole 111 in time, so that the flexible gear 330 cannot rotate continuously under the driving action of the cylinder 110. In order to make the cylinder 110 have higher strength and the flexible gear 330 can rotate continuously under the driving of the cylinder 110, the outer circumferential surfaces of the two axial ends of the flexible gear 330 are provided with outer teeth, the inner circumferential surfaces of the two axial ends of the cylinder 110 are provided with inner teeth, and the flexible gear 330 is engaged with the cylinder 110.

During the rolling process of the cylinder 110, the lowermost end of the flexible gear 330 is always engaged with the cylinder 110, so that the linear speeds of the flexible gear 330 and the cylinder 110 at the lowermost end can be kept the same, the rotation continuity of the flexible gear 330 is maintained, and the lugs 200 are conveniently aligned with the lug holes 111 one by one, and further the lugs 200 are conveniently extended out of the lug holes 111.

Referring to fig. 3, since the flexible gear 330 is deformed during rotation, the protrusion 200 may be locked in the protrusion hole 111 when extending out of or retracting into the protrusion hole 111, and for this reason, both end surfaces of the protrusion 200 in the circumferential direction of the flexible gear 330 are provided with involute shapes, so that the protrusion 200 can extend out of and retract into the protrusion hole 111.

Referring to fig. 3 and 4, due to the presence of the bump 200, when the sheep foot rolls on a normal road, the sheep foot rolls are very easy to damage the road surface. In order to prevent the ground structure from being damaged when the sheep foot roller runs on a road which does not need to be rolled, a rotating mechanism 400 for driving the driving rod 320 to rotate around the main shaft 310 is arranged on the main shaft 310. The middle part of the driving rod 320 is a collar portion 321, and the collar portion 321 is coaxially sleeved on the main shaft 310, so that the driving rod 320 can rotate relative to the main shaft 310 along the axis of the main shaft 310. The rotating mechanism 400 includes a driving motor 410, a first gear 420 and a second gear 430, the driving motor 410 is fixedly connected to the main shaft 310 through a bolt, the first gear 420 is coaxially connected to an output shaft of the driving motor 410, the second gear 430 is coaxially sleeved on the main shaft 310, the second gear 430 and the collar portion 321 are integrally formed, and the first gear 420 is engaged with the second gear 430.

When the sheep foot ground is gone on the road that need not roll, driving motor 410 drive actuating lever 320 rotates, make actuating lever 320 no longer be vertical setting, the bottommost butt of flexbile gear 330 just can't with barrel 110's bottommost butt again, barrel 110 is stretched out in the lug hole 111 of barrel 110 bottommost also no longer to lug 200, so the sheep foot ground is just difficult to destroy road surface structure when going on the road that need not roll, the difficult quilt road conditions restriction of the transfer that makes the sheep foot ground, the flexibility of the transfer that the sheep foot ground was on the construction site has been improved.

Referring to fig. 5 and 6, when it is required to roll high liquid limit soil using the bump 200, the driving rod 320 must be kept in a vertical state, and the driving motor 410 may not complete the locking of the driving rod 320 due to the heavy weight of the sheep foot roll itself. To this end, main shaft 310 is further provided with a lock mechanism 500 for locking drive lever 320 such that drive lever 320 cannot rotate relative to main shaft 310.

Referring to fig. 5 and 6, the locking mechanism 500 includes a locking block 510, a driving block 520, and a hydraulic cylinder 530, two ends of the main shaft 310 are both hollow, the driving block 520 and the hydraulic cylinder 530 are both disposed in the main shaft 310 in a penetrating manner, a cylinder body of the hydraulic cylinder 530 is fixedly connected to the main shaft 310 through a bolt, and the driving block 520 is fixedly connected to a piston rod of the hydraulic cylinder 530 through a bolt. The locking block 510 is slidably connected with the spindle 310 along the radial direction of the spindle 310, one end of the locking block 510 extends into the spindle 310, and the other end of the locking block extends out of the spindle 310. The end of the locking block 510 extending into the main shaft 310 is provided with a first guide surface 511, the driving block 520 is arranged in a circular truncated cone shape, and the outer peripheral surface of the driving block 520 forms a second guide surface 521. When the piston rod of the hydraulic cylinder 530 is extended, the locking block 510 is extended from the main shaft 310 by the first guide surface 511 and the second guide surface 521.

Referring to fig. 5 and 6, the collar portion 321 has a locking groove 322, when the driving rod 320 rotates to the vertical position, the locking groove 322 is aligned with the locking block 510, and the locking block 510 can be locked in the locking groove 322 after extending out from the main shaft 310, so that the driving rod 320 is not easy to rotate relative to the main shaft 310.

Referring to fig. 5 and 6, a reset assembly 600 for resetting the locking block 510 is further disposed in the main shaft 310, the reset assembly 600 includes a connecting block 610 and a compression spring 620, the connecting block 610 is integrally formed at one end of the locking block 510 extending into the main shaft 310, and the compression spring 620 is disposed between the connecting block 610 and the inner wall of the main shaft 310. When the locking block 510 is extended from the main shaft 310, the compression spring 620 is compressed, and when the piston rod of the hydraulic cylinder 530 is retracted, the locking block 510 is reset by the elastic force of the compression spring 620, so that the locking block 510 is released from the locking groove 322, thereby restoring the rotation capability between the driving rod 320 and the main shaft 310.

The implementation principle of the high liquid limit soil filling compaction method in the embodiment of the application is as follows:

when high liquid limit soil is rolled, the driving motor 410 drives the driving rod 320 to rotate to the vertical state, and then the locking block 510 enables the driving rod 320 not to rotate relative to the main shaft 310. In the process of sheep foot grinding movement, the cylinder body 110 continuously rolls on high liquid limit soil, the flexible wheel 330 and the cylinder body 110 synchronously rotate under the driving action of the inner teeth and the outer teeth, in the process of rotation of the flexible wheel 330, the driving mechanism 300 drives the lug 200 positioned at the bottommost end of the flexible wheel 330 to continuously extend out of the lug hole 111 on the cylinder body 110, and further grinding the high liquid limit soil, when the lug 200 positioned at the bottommost end of the flexible wheel 330 is not positioned at the bottommost end of the flexible wheel 330 in situ, the driving mechanism 300 can drive the lug 200 to withdraw from the lug hole 111, so that the high liquid limit soil behind the sheep foot pit is not easily loosened in the process of pulling the lug 200 out of the sheep foot pit, and further the grinding effect is improved.

When the sheep foot rolls are moved on a construction site, the locking block 510 is retracted from the locking groove 322, the driving motor 410 drives the driving rod 320 to enable the driving rod 320 not to keep a vertical state, the lug 200 at the bottom end of the flexible wheel 330 cannot extend out of the lug hole 111, and the probability that the sheep foot rolls damage a common road surface is reduced.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.