Crank mechanism for lifting support of semitrailer

Abstract

The utility model relates to the technical field of crank mechanisms for supporting trailers, in particular to a crank mechanism for lifting and supporting a semitrailer. According to the technical scheme, the device comprises a supporting assembly and a crank assembly, the supporting assembly comprises a jacking supporting frame, the crank assembly comprises a connecting block arranged on one side of the supporting assembly, a rotating sleeve is arranged at one end of the connecting block, a crank is arranged at the end, away from the connecting block, of the rotating sleeve, and a support is arranged on the crank. The semitrailer can be stably supported through the cooperation of the crank assembly and the supporting assembly, the crank can be quickly disassembled and assembled through the arrangement of the threaded pin rod and the quick disassembling pin, and the crank can be stably supported through the arrangement of the support. Meanwhile, the stability of the crank in the working state can be enhanced again through the arrangement of mutual cooperation of the connecting block and the connecting base, the crank can be stored in the assembled state through the arrangement of the fixing assembly, space occupation is reduced, and meanwhile the stability of the crank in the stored state is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to trailer support use rocking handle mechanism technical field especially trailer lifting support's rocking handle mechanism. BACKGROUND

[0002] The rocking handle mechanism for trailer support is a mechanical device for adjusting the height of the trailer support leg, mainly applied to the support system of trailers, trailers or other heavy vehicles. Its function is to make the support leg rise and fall by rocking the handle or rocking handle, so that the trailer remains stable. Although the rocking handle mechanism for trailer support in the prior art performs well in many occasions, it is simple and reliable, but during the use of the rocking handle, most of the rocking handles are in a suspended state of rotation, which causes the rocking handle to shake violently in the radial direction during use, making it difficult to smoothly and quickly rock the rocking handle, and thus leading to unstable support operation of the trailer. Therefore, we propose the rocking handle mechanism for trailer lifting support SUMMARY

[0003] The utility model aims at the problems in the background art and proposes the rocking handle mechanism for trailer lifting support.

[0004] The technical scheme of the utility model is as follows: the rocking handle mechanism for trailer lifting support comprises a support assembly and a rocking handle assembly, the support assembly comprises a jacking support frame, a fixed support frame is arranged in the jacking support frame, a support bottom plate is arranged at one end of the fixed support frame, a reinforcing bottom frame is arranged between the support bottom plate and the fixed support frame, a connecting seat is arranged at one side of the fixed support frame, the rocking handle assembly comprises a connecting block arranged at one side of the support assembly, a rotating sleeve is arranged at one end of the connecting block, a rocking handle is arranged at one end of the rotating sleeve away from the connecting block, a support is arranged on the rocking handle, a bearing is arranged in the inner ring of the support, a fixed assembly is arranged at one side of the jacking support frame, and the fixed assembly comprises a fixed seat and a rotating frame arranged at one side of the fixed seat.

[0005] Preferably, a top plate is arranged at the top end of the jacking support frame, the fixed support frame is correspondingly installed in the inner cavity of the jacking support frame, a rotating shaft is arranged at one end of the fixed support frame away from the jacking support frame, and the rotating shaft is correspondingly installed with the reinforcing bottom frame.

[0006] Preferably, the mounting end of the reinforcing bottom frame is correspondingly installed with the support bottom plate, and a plurality of friction strips are arranged below the support bottom plate.

[0007] Preferably, the mounting end of the connecting seat is correspondingly installed with one side of the fixed support frame, the connecting seat and the driving shaft in the fixed support frame correspond to each other, one end of the connecting block is correspondingly installed with the driving shaft in the fixed support frame, and the outer ring of one end of the connecting block is correspondingly installed with the inner cavity of the connecting seat.

[0008] Preferably, the mounting end of the rotating sleeve is installed correspondingly to one end of the connecting block, and a threaded pin is provided on the end of the crank close to the rotating sleeve. The threaded pin is installed correspondingly to the rotating sleeve, and pin holes are provided on the threaded pin and the rotating sleeve, and a quick-release pin is provided in the pin hole.

[0009] Preferably, the inner ring of the bearing is installed corresponding to the outer ring of the crank, the outer ring of the bearing is installed corresponding to the inner ring of the bracket, and a handle cover is provided on the outer ring of the crank away from the rotating sleeve.

[0010] Preferably, the mounting end of the fixing seat is mounted corresponding to one side of the lifting support frame, and the mounting end of the rotating frame is mounted corresponding to one side of the fixing seat.

[0011] Compared with the prior art, the present invention has the following beneficial technical effects:

[0012] The overall structure of the utility model is simple. The cooperation between the crank assembly and the support assembly can provide stably support for the semi-trailer. The crank can be quickly disassembled and assembled by the setting of the threaded pin rod and the quick-release pin. At the same time, the crank can be stably supported by the setting of the bracket. At the same time, the stability of the crank in the working state can be further enhanced by the mutual cooperation of the connecting block and the connecting seat. The setting of the fixing assembly can make the crank in the assembled state able to be stored, reducing the space occupied and ensuring the stability of the crank in the stored state. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0015] Figure 3 This is an exploded view of a partial area structure of the crank assembly in the present invention.

[0016] Figure numerals: 1. Support assembly; 11. Lifting support frame; 12. Fixed support frame; 13. Support base plate; 14. Reinforced base frame; 15. Connecting seat; 16. Top plate; 17. Rotating shaft; 18. Friction strip; 2. Crank assembly; 21. Connecting block; 22. Rotating sleeve; 23. Crank; 24. Bracket; 25. Bearing; 26. Threaded pin rod; 27. Quick release pin; 28. Handle cover; 3. Fixed assembly; 31. Fixed seat; 32. Rotating frame. DETAILED DESCRIPTION

[0017] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments. Example

[0018] like Figure 1-3As shown, the crank mechanism of the semi-trailer lifting support proposed by the present invention includes a support assembly 1 and a crank assembly 2. The support assembly 1 includes a jacking support frame 11. The top of the jacking support frame 11 is provided with a top plate 16. One side of the top plate 16 is fixedly connected to one end of the jacking support frame 11. The setting of the top plate 16 can increase the contact surface between the jacking support frame 11 and the semi-trailer, so that the jacking support frame 11 is more stable when jacking up the semi-trailer. A fixed The support frame 12 is installed in correspondence with the inner cavity of the lifting support frame 11, the fixed support frame 12 is slidably connected to the lifting support frame 11, one end of the fixed support frame 12 is provided with a supporting base plate 13, a reinforcing base plate 14 is provided between the supporting base plate 13 and the fixed support frame 12, and a rotating shaft 17 is provided on the end of the fixed support frame 12 away from the lifting support frame 11, the rotating shaft 17 is fixedly connected to the fixed support frame 12, the rotating shaft 17 is installed in correspondence with the reinforcing base plate 14, and the rotating shaft 17 is connected to the reinforcing base plate The support frame 13 is fixed to the upper side of the support frame 13, and the support frame 13 is fixed to the upper side of the support frame 13. The arrangement of the reinforced base frame 14 can improve the strength of the support frame 13, so that the semi-trailer can be more stable when it is lifted up. A plurality of friction strips 18 are provided under the support frame 13, and the mounting ends of the friction strips 18 are fixedly connected to the support frame 13. The arrangement of the plurality of friction strips 18 can increase the friction force at the bottom of the support frame 13, so that the support frame 13 has better grip, thereby further improving the stability of the device. A connecting seat 15 is provided on one side of the fixed support frame 12, and the mounting end of the connecting seat 15 is installed corresponding to one side of the fixed support frame 12. The mounting end of the connecting seat 15 is fixedly connected to the fixed support frame 12, and the connecting seat 15 corresponds to the drive shaft in the fixed support frame 12. The arrangement of the connecting seat 15 can protect the drive shaft in the fixed support frame 12.

[0019] The crank assembly 2 includes a connecting block 21 arranged on one side of the support assembly 1, one end of the connecting block 21 is installed corresponding to the drive shaft in the fixed bracket 12, one end of the connecting block 21 and the drive shaft in the fixed bracket 12 are mutually buckled, the outer ring of one end of the connecting block 21 is installed corresponding to the inner cavity of the connecting seat 15, one end of the connecting block 21 is rotatably connected to the connecting seat 15, the setting of the connecting seat 15 can limit the connecting block 21, so that the connecting block 21 and the drive shaft are more stable when they are in the assembled state, and a rotating sleeve 22 is provided at one end of the connecting block 21 The mounting end of the rotating sleeve 22 is installed corresponding to one end of the connecting block 21, and the rotating sleeve 22 is rotatably connected to the connecting block 21. A crank 23 is provided on the end of the rotating sleeve 22 away from the connecting block 21. A handle 28 is provided on the outer ring of the end of the crank 23 away from the rotating sleeve 22. The handle 28 is sleeved on the outer ring of one end of the crank 23. The setting of the handle 28 facilitates the operator to grasp the crank 23. A threaded pin 26 is provided on the end of the crank 23 close to the rotating sleeve 22. The mounting end of the threaded pin 26 is fixedly connected to one end of the crank 23 , the threaded pin rod 26 is installed corresponding to the rotating sleeve 22, one end of the threaded pin rod 26 is threadedly connected to one end of the rotating sleeve 22, and a pin hole is provided on the threaded pin rod 26 and the rotating sleeve 22, and a quick release pin 27 is provided in the pin hole. The quick release pin 27 is installed corresponding to the pin hole. The setting of the quick release pin 27 can make the threaded pin rod 26 and the rotating sleeve 22 more stable when they are in an assembled state, and at the same time, it can enable the operator to quickly disassemble the threaded pin rod 26. The detachable setting of the threaded pin rod 26 makes this device have a certain anti-theft effect. The crank 23 is provided with a A bracket 24 is provided, and a bearing 25 is provided on the inner ring of the bracket 24. The inner ring of the bearing 25 is mounted correspondingly to the outer ring of the crank 23, and the inner ring of the bearing 25 is fixedly connected to the crank 23. The outer ring of the bearing 25 is mounted correspondingly to the inner ring of the bracket 24, and the outer ring of the bearing 25 is fixedly connected to the inner ring of the bracket 24. The arrangement of the bearing 25 enables the bracket 24 to rotate along the crank 23. The arrangement of the bracket 24 enables the operator to support the crank 23 when rotating it, thereby ensuring the stability of the crank 23 when rotating.

[0020] A fixing assembly 3 is provided on one side of the lifting support frame 11, and the fixing assembly 3 includes a fixing seat 31. The mounting end of the fixing seat 31 is installed corresponding to one side of the lifting support frame 11, and the mounting end of the fixing seat 31 is fixedly connected to one side of the lifting support frame 11. A rotating frame 32 is provided on one side of the fixing seat 31, and the mounting end of the rotating frame 32 is installed corresponding to one side of the fixing seat 31. The rotating frame 32 is rotatably connected to the fixing seat 31. The setting of the fixing assembly 3 can make the crank 23 be stored when it is in an assembled state, reducing the space occupied, and at the same time ensuring the stability of the crank 23 when it is in a stored state.

[0021] In this embodiment, when it is necessary to support the trailer, the operator first places the device in correspondence with the supporting point of the trailer, and then the operator rotates the rotating frame 32 upward to disengage the rotating frame 32 from the resistance state of the crank handle 23. The operator then pulls the crank handle 23 to one side and rotates the bracket 24 so that the end angle of the bracket 24 contacts the ground. The operator then rotates the crank handle 23 so that the crank handle 23 drives the rotating sleeve 22 to rotate through the threaded pin 26. The rotation of the rotating sleeve 22 drives the drive shaft in the fixed support frame 12 to rotate, so that the jacking support frame 11 drives the top plate 16 to move upward along the fixed support frame 12. The crank handle 23 is continued to be rotated so that the top plate 16 contacts and supports the supporting point of the semi-trailer. When the semi-trailer is jacked up to a suitable height, the operator resets the crank handle 23 and stores it.

[0022] When the operator needs to disassemble the crank 23, the operator first pulls out the quick-release pin 27 and then rotates the crank 23. The rotation of the crank 23 drives the threaded pin rod 26 to rotate accordingly, thereby disengaging the threaded pin rod 26 from the assembly state with the rotating sleeve 22, and then removing the crank 23.

[0023] The above specific embodiment is only a preferred embodiment of the present invention. Based on the technical solution of the present invention and the relevant inspiration of the above embodiment, those skilled in the art can make various alternative improvements and combinations to the above specific embodiment.

Claims

1. A crank mechanism for a semi-trailer lifting support, comprising a support assembly (1) and a crank assembly (2), characterized in that: The support assembly (1) includes a lifting support frame (11), a fixed support frame (12) is arranged inside the lifting support frame (11), a support base plate (13) is arranged at one end of the fixed support frame (12), a reinforcing base plate (14) is arranged between the support base plate (13) and the fixed support frame (12), a connecting seat (15) is arranged on one side of the fixed support frame (12), the crank assembly (2) includes a connecting block (21) arranged on one side of the support assembly (1), a rotating sleeve (22) is arranged at one end of the connecting block (21), a crank (23) is arranged at the end of the rotating sleeve (22) away from the connecting block (21), a bracket (24) is arranged on the crank (23), and a bearing (25) is arranged on the inner ring of the bracket (24), a fixing assembly (3) is arranged on one side of the lifting support frame (11), the fixing assembly (3) includes a fixing seat (31), and a rotating frame (32) is arranged on one side of the fixing seat (31).

2. The crank mechanism for the semi-trailer lifting support according to claim 1, characterized in that: A top plate (16) is provided at the top of the lifting support frame (11), the fixed support frame (12) is installed corresponding to the inner cavity of the lifting support frame (11), and a rotating shaft (17) is provided at one end of the fixed support frame (12) away from the lifting support frame (11), and the rotating shaft (17) is installed corresponding to the reinforcing base frame (14).

3. The crank mechanism for the semi-trailer lifting support according to claim 1, characterized in that: The mounting end of the reinforcing chassis (14) is mounted correspondingly to the supporting base plate (13), and a plurality of groups of friction strips (18) are provided below the supporting base plate (13).

4. The crank mechanism for the semi-trailer lifting support according to claim 1, characterized in that: The mounting end of the connecting seat (15) is mounted correspondingly to one side of the fixed support (12), the connecting seat (15) and the drive shaft in the fixed support (12) correspond to each other, one end of the connecting block (21) is mounted correspondingly to the drive shaft in the fixed support (12), and the outer ring of one end of the connecting block (21) is mounted correspondingly to the inner cavity of the connecting seat (15).

5. The crank mechanism for the semi-trailer lifting support according to claim 1, characterized in that: The mounting end of the rotating sleeve (22) is mounted correspondingly to one end of the connecting block (21), and a threaded pin rod (26) is provided on one end of the crank handle (23) close to the rotating sleeve (22). The threaded pin rod (26) is mounted correspondingly to the rotating sleeve (22), and pin holes are provided on both the threaded pin rod (26) and the rotating sleeve (22), and a quick-release pin (27) is provided in the pin hole.

6. The crank mechanism for the semi-trailer lifting support according to claim 1, characterized in that: The inner ring of the bearing (25) is mounted correspondingly to the outer ring of the crank (23), the outer ring of the bearing (25) is mounted correspondingly to the inner ring of the bracket (24), and a handle sleeve (28) is provided on the outer ring of the crank (23) at one end away from the rotating sleeve (22).

7. The crank mechanism for the semi-trailer lifting support according to claim 1, characterized in that: The mounting end of the fixing seat (31) is mounted correspondingly to one side of the lifting support frame (11), and the mounting end of the rotating frame (32) is mounted correspondingly to one side of the fixing seat (31).

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