A transmission dismounting device

Abstract

The utility model discloses a transmission dismounting device relates to vehicle maintenance equipment field, include: bottom plate, the bottom plate is provided with recess, recess inside fixed mounting has two inclined plates, two the inclined plate symmetrical setting, two the inclined plate is used for accommodating transmission, bottom plate one side is through the recess movable mounting with two gyro wheel, two gyro wheel is located recess both sides setting, bottom plate both sides each fixed mounting has two fixed hook, bottom plate one side fixed mounting has the top plate, the top plate one side is through bearing movable mounting with two deflection wheel, the top plate one side movable mounting has the pull rod, pull rod one end fixed mounting has handheld rod, bottom plate top movable mounting has the portal frame, the gyro wheel and deflection wheel of utility model all adopt big size inflatable rubber tire, and the tire tread is designed with the depth antiskid line, not only has promoted the damping performance and ground friction performance, can effectively buffer the impact of ground bump to the whole device.

Description

Technical Field

[0001] This utility model relates to the field of vehicle repair equipment technology, specifically to a transmission disassembly and assembly device. Background Technology

[0002] A transmission removal and installation device is a piece of equipment used when removing and installing a vehicle transmission. It can place and move the transmission. Traditional transmission trailers generally use a hydraulic drive mode. This type of trailer usually consists of core components such as a hydraulic pump station, hydraulic cylinders, a load-bearing platform, a frame, and wheels. The load-bearing platform is used to directly place the transmission. The hydraulic cylinders, as the core power actuators, are connected to the load-bearing platform. The hydraulic cylinders are driven by the pressure provided by the hydraulic pump station to extend and retract, thereby realizing the lifting and lowering of the load-bearing platform. The operator only needs to control the hydraulic handle to complete the lifting and lowering adjustment. In addition, the hydraulic cylinders themselves have a strong load capacity and can stably support transmissions of different weights and specifications.

[0003] However, traditional hydraulic transmission trailers require a high degree of surface flatness and can only operate stably on hardened, flat surfaces. In complex environments such as field maintenance, emergency road repair, and outdoor engineering vehicle maintenance, the ground is often uneven, bumpy, and littered with gravel. Traditional trailers typically have small, hard tires with poor shock absorption and terrain adaptability, making them prone to getting stuck in potholes or obstructed by gravel, hindering precise movement to the work position. Furthermore, the traditional method of securing the transmission is relatively simple, usually relying on a few chains to bind it to the platform. The rigid constraint of these chains lacks cushioning, and the transmission can easily slide along the platform surface when the trailer shakes or the ground vibrates, causing misalignment. The connection between the transmission shaft and the engine flywheel requires extremely high coaxiality; any misalignment will make it difficult to insert the shaft into the flywheel's center hole, requiring operators to repeatedly adjust the transmission position, increasing maintenance time and labor intensity, and severely impacting maintenance efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a transmission disassembly and assembly device to solve the problem that traditional transmission trailers in the prior art have high requirements for the flatness of the working ground and are difficult to adapt to complex terrains such as uneven terrain in the field.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a transmission disassembly and assembly device, comprising:

[0006] The base plate has a groove, and two inclined plates are fixedly installed inside the groove. The two inclined plates are symmetrically arranged and are used to accommodate the gearbox. Two rollers are movably installed on one side of the base plate through a slot. The two rollers are located on both sides of the groove. Two fixing hooks are fixedly installed on each side of the base plate. A top plate is fixedly installed on one side of the base plate. Two steering wheels are movably installed on one side of the top plate through bearings. A pull rod is movably installed on one side of the top plate. A hand handle is fixedly installed at one end of the pull rod. A gantry frame is movably installed at the top of the base plate. A lifting ring is fixedly installed on the side of the gantry frame near the base plate. A lever hoist is movably installed on one side of the gantry frame. The lever hoist is hung on the side of the lifting ring and is used to support the gearbox.

[0007] The disassembly and assembly mechanism is used for disassembling and assembling the gantry frame. The disassembly and assembly mechanism is located at the top of the base plate and includes two rectangular frames. The two rectangular frames are symmetrically arranged at the top of the base plate. A rectangular block is inserted into the rectangular frame. The rectangular block is fixedly connected to the gantry frame on the side closest to the gantry frame. An insertion hole is opened on one side of the rectangular block. An adjustment frame is connected to one side of the rectangular frame. An insertion rod is movably installed on one side of the adjustment frame and is inserted into the insertion hole.

[0008] Furthermore, a rotating shaft is movably installed at the top of the top plate, a rotating plate is fixedly installed on the outside of the rotating shaft, a support shaft is fixedly installed at both ends of the rotating plate, a horizontal shaft is connected between the support shafts, a rotating cylinder is sleeved on the outside of the horizontal shaft, and the rotating cylinder is fixedly connected to the pull rod.

[0009] Furthermore, the adjustment frame is fixedly installed on one side of the rectangular frame, a threaded rod is movably installed inside the adjustment frame, a threaded block is threadedly installed on the outside of the threaded rod, the threaded block slides against the inner wall of the adjustment frame, and the insertion rod is fixedly connected to the threaded block.

[0010] Furthermore, a knob is movably mounted on the outside of the adjustment frame near the threaded rod. The knob is connected to the shaft of the threaded rod via a drive. Several limiting grooves are provided on the side of the knob near the adjustment frame, and the limiting grooves are distributed circumferentially.

[0011] Furthermore, a limiting block is fixedly installed at the top of the adjusting frame, and a limiting rod is inserted into the limiting block through an opening, with one end of the limiting rod inserted into the limiting groove.

[0012] Furthermore, a locking block is fixedly installed on the top of the adjustment frame near the limiting block, and the locking block has two locking slots. A locking plate is movably installed on the end of the limiting rod away from the limiting slots, and the locking plate is embedded inside the locking slots.

[0013] Compared with existing technologies, the transmission disassembly and assembly device provided by this utility model uses large-sized inflatable rubber tires for both the rollers and steering wheels. The tire treads are designed with deep anti-slip treads, which not only improves shock absorption and ground friction performance, effectively buffering the impact of ground bumps on the overall device, but also easily overcomes friction obstacles on uneven ground in the field environment, avoiding slippage and ensuring that the device can still move flexibly in complex road conditions such as gravel and mud. At the same time, the groove of the base plate and the symmetrically arranged inclined plates form an inverted trapezoidal receiving space. This structure is perfectly compatible with the structure of the bottom of most transmissions. When the transmission is placed, it can be automatically centered by the guiding action of the inclined plates, reducing manual positioning time. With the fixing hooks symmetrically distributed on both sides of the base plate, the transmission can be reinforced from multiple angles by straps or ropes, forming a multi-point fixing constraint, effectively preventing the transmission from shifting or misaligning when the device moves or shakes, reducing the positioning difficulty during disassembly and assembly. In addition, the inverted trapezoidal receiving space can also provide lateral support for the transmission, avoiding the risk of the transmission tipping over due to the shift of the center of gravity during the transfer, further improving the operational safety in the field environment.

[0014] Using a lever hoist instead of a traditional hydraulic cylinder as the lifting power element, the lever hoist adopts a purely mechanical structure design. Its core components include only a chain, gear set, and braking mechanism. The structure is simple and has fewer parts. Compared with a hydraulic system composed of a hydraulic pump station, hydraulic cylinder, and seals, it does not have common failure points such as hydraulic oil leakage, seal aging, and oil pipe blockage. During use, there is no need for tedious maintenance work such as regular hydraulic oil replacement and seal maintenance. Only regular lubrication of the chain is required to maintain normal operation, reducing maintenance costs and workload. At the same time, the service life of the lever hoist is not affected by factors such as hydraulic oil quality and working pressure. The replacement of mechanical wear parts is convenient and inexpensive. Unlike hydraulic cylinders, there is no fixed life cycle limitation, further reducing the long-term use cost of the equipment.

[0015] The universal drive structure, composed of a rotating shaft, rotating plate, support shaft, and rotating cylinder, enables flexible multi-angle rotation of the pull rod. Compared to the fixed-angle pull rod design of traditional trailers, operators can freely adjust the pulling angle of the pull rod according to the actual situation such as the size of the working space and their own standing position. This not only allows for easy control of the device to achieve forward and backward movements but also enables small-radius steering. Even in narrow working spaces such as under the vehicle, the device position can be flexibly adjusted, greatly improving the convenience of operation. At the same time, the universal structure also has a certain folding and storage function. When the device is not in use, the pull rod can be folded close to the top plate, reducing the storage space of the device and facilitating transportation and storage.

[0016] The design of the disassembly and assembly mechanism enables rapid assembly and disassembly of the gantry frame and the base plate. The entire process can be completed entirely manually without the need for any auxiliary tools such as wrenches or screwdrivers, thus improving assembly and disassembly efficiency. During assembly, the interlocking of the rectangular blocks and the rectangular frame not only achieves the initial positioning of the gantry frame, but the guide structure on the inner wall of the rectangular frame also ensures that the rectangular blocks are accurately inserted, avoiding installation deviations. Then, the knob drives the insertion rod to insert into the insertion hole to complete the mechanical locking. The limit rod is inserted into the limit groove to constrain the knob to prevent reverse rotation, and the card plate is embedded in the card slot to fix the limit rod for a second time, forming a multi-locking structure that can effectively prevent the gantry frame from loosening or falling off during the process of carrying the gearbox, ensuring operational safety. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 A schematic diagram of the overall structure provided for an embodiment of this utility model;

[0019] Figure 2 This is an enlarged structural diagram of point A provided in an embodiment of the present utility model;

[0020] Figure 3 A schematic diagram of the gantry frame installation structure provided in this embodiment of the utility model;

[0021] Figure 4 This is a schematic diagram of the insertion rod installation structure provided in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Base plate; 11. Groove; 12. Inclined plate; 13. Roller; 14. Fixing hook; 15. Top plate; 16. Steering wheel; 17. Pull rod; 18. Hand lever; 19. Gantry frame; 110. Lifting ring; 111. Lever hoist; 112. Rotating shaft; 113. Rotating plate; 114. Support shaft; 115. Horizontal shaft; 116. Rotating drum; 2. Assembly / disassembly mechanism; 21. Rectangular frame; 22. Rectangular block; 23. Insertion hole; 24. Adjustment frame; 25. Threaded rod; 26. Threaded block; 27. Insertion rod; 28. Knob; 29. ​​Limiting groove; 210. Limiting block; 211. Limiting rod; 212. Locking block; 213. Locking groove; 214. Locking plate. Detailed Implementation

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] As attached Figure 1 To be continued Figure 4 As shown:

[0026] Example 1:

[0027] This utility model provides a transmission disassembly and assembly device, comprising:

[0028] The base plate 1 has a groove 11, and two inclined plates 12 are fixedly installed inside the groove 11. The two inclined plates 12 are symmetrically arranged and are used to accommodate the gearbox. Two rollers 13 are movably installed on one side of the base plate 1 through a slot. The two rollers 13 are located on both sides of the groove 11. Two fixing hooks 14 are fixedly installed on each side of the base plate 1. A top plate 15 is fixedly installed on one side of the base plate 1. Two steering wheels 16 are movably installed on one side of the top plate 15 through bearings. A pull rod 17 is movably installed on one side of the top plate 15. A hand handle 18 is fixedly installed at one end of the pull rod 17. A gantry frame 19 is movably installed at the top of the base plate 1. A lifting ring 110 is fixedly installed on the side of the gantry frame 19 near the base plate 1. A lever hoist 111 is movably installed on one side of the gantry frame 19. The lever hoist 111 is hung on the side of the lifting ring 110 and is used to support the gearbox.

[0029] The disassembly and assembly mechanism 2 is used to disassemble and assemble the gantry frame 19. The disassembly and assembly mechanism 2 is set at the top of the base plate 1. The disassembly and assembly mechanism 2 includes a rectangular frame 21. There are two rectangular frames 21, which are symmetrically arranged at the top of the base plate 1. A rectangular block 22 is inserted into the rectangular frame 21. The side of the rectangular block 22 closest to the gantry frame 19 is fixedly connected to the gantry frame 19. An insertion hole 23 is opened on one side of the rectangular block 22. An adjustment frame 24 is connected to one side of the rectangular frame 21. An insertion rod 27 is movably installed on one side of the adjustment frame 24 and is inserted into the insertion hole 23.

[0030] Specifically, a rotating shaft 112 is movably installed at the top of the top plate 15, a rotating plate 113 is fixedly installed on the outside of the rotating shaft 112, a support shaft 114 is fixedly installed at both ends of the rotating plate 113, a horizontal shaft 115 is connected between the support shafts 114, a rotating cylinder 116 is sleeved on the outside of the horizontal shaft 115, and the rotating cylinder 116 is fixedly connected to the pull rod 17.

[0031] As can be seen from the above, the groove 11 in the center of the base plate 1, together with the symmetrically arranged inclined plates 12 on both sides, forms an inverted trapezoidal receiving space that is wider at the top and narrower at the bottom. This structure matches the bottom profile of most vehicle transmissions, effectively limiting the displacement of the transmission in the front-rear and left-right directions, preventing it from sliding or overturning during towing. The two rear rollers 13 can only rotate around their own axis, providing support for straight-line travel. The two front steering wheels 16 are mounted on the top plate 15 through bearings and can deflect freely, achieving flexible steering in conjunction with the tie rod 17. Both use large-size pneumatic rubber tires, which have excellent shock absorption, grip, and obstacle crossing ability, allowing for smooth passage on unpaved surfaces such as mud, gravel, and grass, avoiding slippage or jamming. The base plate 1 has four... A fixed hook 14 allows maintenance personnel to use straps or high-strength ropes to wrap around the gearbox and secure it to the fixed hook 14, forming a four-point binding structure. This further prevents the gearbox from shaking or falling off in bumpy environments, ensuring operational safety. The pull rod 17 is connected to the horizontal shaft 115 via the rotating drum 116. Both ends of the horizontal shaft 115 are fixed to the rotating plate 113, which can rotate around the rotating shaft 112, by the support shaft 114, forming a universal joint-like structure. This design allows the pull rod 17 to swing freely in the vertical and horizontal planes. Whether the operator is standing in front, to the side, or behind, they can easily push, pull, or turn the device, improving operational flexibility in confined spaces in field environments. The gantry 19 is erected above the base plate 1, and the top lifting ring 110 is used to suspend the lever hoist 111.

[0032] Specifically, the adjusting frame 24 is fixedly installed on one side of the rectangular frame 21. A threaded rod 25 is movably installed inside the adjusting frame 24. A threaded block 26 is threadedly installed on the outer side of the threaded rod 25, and the threaded block 26 slides against the inner wall of the adjusting frame 24. The insert rod 27 is fixedly connected to the threaded block 26. A knob 28 is movably installed on the outer side of the adjusting frame 24 near the threaded rod 25. The knob 28 is shaft-driven to the threaded rod 25. Several limiting grooves 2 are provided on the side of the knob 28 near the adjusting frame 24. 9. The limiting groove 29 is circumferentially distributed. A limiting block 210 is fixedly installed at the top of the adjusting frame 24. A limiting rod 211 is inserted into the limiting block 210 through an opening. One end of the limiting rod 211 is inserted into the limiting groove 29. A locking block 212 is fixedly installed at the top of the adjusting frame 24 near the limiting block 210. The locking block 212 has two locking grooves 213. A locking plate 214 is movably installed at the end of the limiting rod 211 away from the limiting groove 29. The locking plate 214 is embedded in the locking groove 213.

[0033] As can be seen from the above, the rectangular block 22 at the bottom of the gantry 19 is inserted into the rectangular frame 21 on the base plate 1 to complete the initial positioning of the gantry 19. Rotating the knob 28 drives the threaded rod 25 to rotate, which in turn drives the threaded block 26 to slide along the adjusting frame 24, thereby pushing the insertion rod 27 into the insertion hole 23 of the rectangular block 22 to achieve mechanical locking. To prevent the insertion rod 27 from coming out due to accidental rotation of the knob 28, the limiting rod 211 is inserted into the limiting groove 29 on the outer periphery of the knob 28, and the locking plate 214 is inserted into the corresponding slot 213 of the locking block 212 to form a double anti-loosening structure, ensuring that the gantry 19 is stable and does not loosen during operation.

[0034] Working principle: First, the first worker pushes the device directly under the vehicle's transmission, ensuring that the groove 11 aligns with the transmission position. Second, the second worker installs the gantry 19, inserting the rectangular block 22 into the rectangular frame 21. Rotating the knob 28 drives the threaded rod 25 to rotate, causing the threaded block 26 to move the insertion rod 27 into the insertion hole 23. Then, the retaining plate 214 is pried out of the slot 213 away from the knob 28, and the limiting rod 211 is pushed into the limiting groove 29. Finally, the retaining plate 214 is inserted into the slot 213 near the knob 28, completing the gantry installation. The gantry 19 is locked. Next, the lever hoist 111 is hoisted onto the lifting ring 110. The third step is to use straps to fix the gearbox to the hook of the lever hoist 111. The fourth step is for the first worker to loosen the screws around the front of the gearbox and pull out the gearbox shaft. The second worker operates the lever hoist 111 to make the gearbox descend smoothly onto the inclined plate 12 of the groove 11. The fifth step is for the first worker to loosen the straps and, if necessary, further reinforce the gearbox with ropes through the fixing hook 14. Then the device can be pulled out from under the vehicle to complete the gearbox disassembly.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A transmission disassembly and assembly device, characterized in that, include: A base plate (1) has a groove (11) with two inclined plates (12) fixedly installed inside the groove (11). The two inclined plates (12) are symmetrically arranged and are used to accommodate the gearbox. Two rollers (13) are movably installed on one side of the base plate (1) through a slot. The two rollers (13) are located on both sides of the groove (11). Two fixing hooks (14) are fixedly installed on each side of the base plate (1). A top plate (15) is fixedly installed on one side of the base plate (1). Two steering wheels (16) are movably mounted via bearings. A tie rod (17) is movably mounted on one side of the top plate (15). A hand handle (18) is fixedly mounted on one end of the tie rod (17). A gantry frame (19) is movably mounted on the top of the bottom plate (1). A lifting ring (110) is fixedly mounted on the side of the gantry frame (19) near the bottom plate (1). A lever hoist (111) is movably mounted on one side of the gantry frame (19). The lever hoist (111) is hung on one side of the lifting ring (110). The lever hoist (111) is used to support the gearbox. The disassembly and assembly mechanism (2) is used to disassemble and assemble the gantry frame (19). The disassembly and assembly mechanism (2) is located at the top of the base plate (1). The disassembly and assembly mechanism (2) includes a rectangular frame (21). There are two rectangular frames (21). The two rectangular frames (21) are symmetrically arranged at the top of the base plate (1). A rectangular block (22) is inserted inside the rectangular frame (21). The rectangular block (22) is fixedly connected to the gantry frame (19) on the side close to the gantry frame (19). A socket (23) is opened on one side of the rectangular block (22). An adjustment frame (24) is connected to one side of the rectangular frame (21). A plug rod (27) is movably installed on one side of the adjustment frame (24). The plug rod (27) is inserted into the socket (23).

2. The transmission disassembly and assembly device according to claim 1, characterized in that, A rotating shaft (112) is movably installed at the top of the top plate (15). A rotating plate (113) is fixedly installed on the outside of the rotating shaft (112). Support shafts (114) are fixedly installed at both ends of the rotating plate (113). A horizontal shaft (115) is connected between the support shafts (114). A rotating cylinder (116) is sleeved on the outside of the horizontal shaft (115). The rotating cylinder (116) is fixedly connected to the pull rod (17).

3. The transmission disassembly and assembly device according to claim 1, characterized in that, The adjustment frame (24) is fixedly installed on one side of the rectangular frame (21). A threaded rod (25) is movably installed inside the adjustment frame (24). A threaded block (26) is threadedly installed on the outside of the threaded rod (25). The threaded block (26) slides against the inner wall of the adjustment frame (24). The insertion rod (27) is fixedly connected to the threaded block (26).

4. The transmission disassembly and assembly device according to claim 3, characterized in that, A knob (28) is movably installed on the outside of the adjustment frame (24) near the threaded rod (25). The knob (28) is connected to the threaded rod (25) by shaft drive. Several limiting grooves (29) are opened on the side of the knob (28) near the adjustment frame (24). The limiting grooves (29) are circumferentially distributed.

5. A transmission disassembly and assembly device according to claim 4, characterized in that, The top of the adjustment frame (24) is fixedly installed with a limiting block (210), and a limiting rod (211) is inserted into the limiting block (210) through an opening. One end of the limiting rod (211) is inserted into the limiting groove (29).

6. A transmission disassembly and assembly device according to claim 5, characterized in that, A locking block (212) is fixedly installed on the top of the adjustment frame (24) near the limiting block (210). The locking block (212) has two slots (213). A locking plate (214) is movably installed on the end of the limiting rod (211) away from the limiting slot (29). The locking plate (214) is embedded in the slot (213).

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