A special tool for dismounting and mounting the safety support of the steel plate of a self-unloading vehicle

Abstract

This utility model relates to the field of lifting equipment technology and discloses a special tool for disassembling and assembling safety supports for dump truck steel plates. The tool includes a housing and a rocker arm. The rocker arm is assembled inside the housing, and a worm gear is connected to the outside of the rocker arm. A worm wheel is meshed with the top of the worm gear, and a first conical tooth is connected to the outside of the worm wheel. A second conical tooth is meshed with the bottom of the first conical tooth, and a threaded cylinder is connected to the bottom of the second conical tooth. A first threaded rod is threadedly connected to the inner cavity of the threaded cylinder. This special tool for disassembling and assembling safety supports for dump truck steel plates improves the speed of maintenance of dump truck steel plates and allows for rapid height adjustment, thereby increasing the adjustment speed of the device. Furthermore, through the addition of a slot and a locking rod, the position of the support arm is quickly locked after movement, improving the stability of lifting the dump truck steel plate and preventing the dump truck steel plate from falling due to the support arm returning to its original position.

Description

Technical Field

[0001] This utility model relates to the field of lifting equipment technology, specifically a special tool for disassembling and assembling the safety support of the steel plate of a dump truck. Background Technology

[0002] Leaf springs in dump trucks are made of highly elastic and durable alloy steel, consisting of multiple steel plates of varying lengths but the same width stacked together. The plates are stacked in an inverted triangular shape, with the top plate being the longest and the bottom plate the shortest. The number of plates is related to the weight of the vehicle being supported; more, thicker, and shorter plates result in greater spring stiffness. However, over time, leaf springs can experience sliding friction between the plates, generating noise. This friction can also cause spring deformation, leading to uneven ride. The function of leaf springs is to connect the vehicle frame and axle via suspension. Exposed between the frame and axle, they bear the impact load from the wheels, reduce severe vibrations, and maintain vehicle stability and adaptability to different road conditions.

[0003] Currently, the safe support for disassembling and assembling the steel plates of dump trucks requires the combined operation of jacks and stools. Placing the jacks on the stools with safety measures in place is used to support the vehicle frame and prevent deformation and instability. Due to the excessive weight of the jacks, it is very difficult to lift and place them on the stools, and accidents of jacks falling often occur. When jacks fall, they can easily be rendered unusable, resulting in economic losses. In addition, if the jacks are not fully in place, they need to be readjusted, which affects the use of the equipment. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a special tool for disassembling and assembling the safety support of the steel plate of a dump truck. This tool solves the technical problems of excessive weight of the jacks, which makes it very difficult to lift and place the jacks on the stool, often resulting in jack falls that can easily damage the jacks and cause economic losses. In addition, if the jacks are not properly positioned, readjustment is required, which affects the use of the device.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a special tool for disassembling and assembling safety supports for steel plates of dump trucks, comprising: a housing and a rocker arm, the rocker arm being assembled inside the housing, a worm gear being connected to the outside of the rocker arm, a worm wheel being meshed at the top of the worm gear, a first conical tooth being connected to the outside of the worm wheel, a second conical tooth being meshed at the bottom of the first conical tooth, a threaded cylinder being connected to the bottom of the second conical tooth, a first threaded rod being threadedly connected to the inner cavity of the threaded cylinder, a support arm being connected to the bottom of the first threaded rod, and slots being evenly distributed on the outside of the support arm.

[0008] Both ends of the inner cavity of the outer shell are connected to a limiting mechanism, which includes a locking rod.

[0009] Preferably, the top of the housing is fitted with a top plate, and a seated spherical bearing is embedded on the left side of the housing. The seated spherical bearing is connected to the worm gear. The top plate can lift the workpiece, and the seated spherical bearing can support the worm gear.

[0010] Preferably, a guide disc is sleeved on the outside of the first threaded rod, and a guide arm is inserted into the top of the guide disc. The guide arm is connected to the bottom of the inner cavity of the outer shell. The guide disc can cooperate with the guide arm to guide the first threaded rod and prevent the first threaded rod from rotating during movement.

[0011] Preferably, a first bearing is sleeved on the outside of the threaded cylinder. The first bearing is connected to the inner cavity of the outer shell. The first bearing can support the threaded cylinder and improve the stability of the threaded cylinder during movement.

[0012] Preferably, a hollow cylinder is slidably connected to the outside of the clamping rod, and a spring is connected between the hollow cylinder and the clamping rod. A guide block is connected to the top of the hollow cylinder, and a slotted block is slidably connected to the outside of the guide block. The slotted block is connected to the inner cavity of the outer shell. The hollow cylinder can guide the clamping rod, allowing it to slide inside. The spring can guide the clamping rod and pull it back to its original position. The clamping rod, in conjunction with the hollow cylinder and the spring, and through the design of the top inclined surface, ensures that under normal conditions, the clamping rod only restricts the return of the support arm and does not restrict the descent of the support arm.

[0013] Preferably, the hollow cylinder is externally connected to connecting rods via hinges, and the other ends of the two connecting rods are connected to push plates via hinges. A second threaded rod is externally connected to the push plate via a bearing with a mounting seat. A nut is threaded onto the external part of the second threaded rod, and the nut is welded to the inner cavity of the outer shell. Rotating the second threaded rod can drive the push plate to move, which in turn pulls the hollow cylinder through the connecting rods.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a special tool for disassembling and assembling the steel plate safety support of a dump truck, which has the following beneficial effects:

[0016] This specialized tool for disassembling and assembling safety supports for dump truck steel plates utilizes an added rocker arm, worm gear, worm wheel, first conical gear, second conical gear, threaded cylinder, first threaded rod, and support arm to quickly lift the outer casing, thereby lifting the dump truck steel plates. This improves the lifting efficiency of the dump truck steel plates, avoiding the difficulties in using traditional jacks and their tendency to fall, thus increasing the speed of maintenance of dump truck steel plates. It also allows for rapid height adjustment, improving the speed of device adjustment. Furthermore, the added slots and levers quickly lock the position of the support arm after its movement, improving the stability of lifting the dump truck steel plates and preventing the steel plates from falling due to the support arm returning to its original position. Attached Figure Description

[0017] Figure 1 This is a front view of the present utility model;

[0018] Figure 2 This is a schematic diagram of the external shape of the rocker arm of this utility model;

[0019] Figure 3 This is an external schematic diagram of the limiting mechanism of this utility model;

[0020] Figure 4 This is a partial sectional view of the hollow cylinder of this utility model.

[0021] In the diagram: 1. Outer shell; 11. Top plate; 2. Rocker arm; 21. First conical tooth; 22. Worm gear; 23. Worm wheel; 24. Sealed spherical bearing; 3. Second conical tooth; 31. Threaded cylinder; 32. First bearing; 33. First threaded rod; 34. Support arm; 35. Slot; 36. Guide plate; 37. Guide arm; 4. Limiting mechanism; 41. Second threaded rod; 42. Nut; 43. Push plate; 44. Connecting rod; 45. Hollow cylinder; 46. Locking rod; 47. Spring; 48. Slotted block; 49. Guide block. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] This utility model provides a technical solution, please refer to Figure 1 and Figure 2A special tool for disassembling and assembling safety supports for steel plates of dump trucks includes: a housing 1 and a rocker arm 2. The rocker arm 2 is assembled inside the housing 1. A worm gear 22 is connected to the outside of the rocker arm 2. A worm wheel 23 is meshed with the top of the worm gear 22. A first conical tooth 21 is connected to the outside of the worm wheel 23. A second conical tooth 3 is meshed with the bottom of the first conical tooth 21. A threaded cylinder 31 is connected to the bottom of the second conical tooth 3. A first threaded rod 33 is threadedly connected to the inner cavity of the threaded cylinder 31. A support arm 34 is connected to the bottom of the first threaded rod 33. The support arm 34 has grooves 35 evenly distributed on its outer side.

[0024] The outer casing 1 supports the rocker arm 2. Rotation of the rocker arm 2 drives the worm gear 22 to rotate, which in turn drives the worm wheel 23 to rotate. Both the worm wheel 23 and the second conical tooth 3 are externally fitted with seated bearings, which are connected to the inner cavity of the outer casing 1. The worm wheel 23 drives the first conical tooth 21 to rotate, which in turn drives the second conical tooth 3 to rotate. The second conical tooth 3 drives the threaded cylinder 31 to rotate, which in turn causes the first threaded rod 33 and the support arm 34 to descend.

[0025] Both ends of the inner cavity of the outer shell 1 are connected to a limiting mechanism 4, which includes a locking rod 46.

[0026] Please see Figure 3 and Figure 4 The lever 46 can be inserted into the inner cavity of the slot 35 to lock the position of the support arm 34 a second time, thereby improving the stability of the support arm 34 during movement.

[0027] The top of the outer casing 1 is fitted with a top plate 11, and a seated spherical bearing 24 is embedded on the left side of the outer casing 1. The seated spherical bearing 24 is connected to the worm gear 22. The top plate 11 can lift the workpiece, and the seated spherical bearing 24 can support the worm gear 22.

[0028] A guide disc 36 is sleeved on the outside of the first threaded rod 33. A guide arm 37 is inserted into the top of the guide disc 36. The guide arm 37 is connected to the bottom of the inner cavity of the outer shell 1. The guide disc 36 can cooperate with the guide arm 37 to guide the first threaded rod 33 and prevent the first threaded rod 33 from rotating during movement.

[0029] The threaded cylinder 31 is fitted with a first bearing 32, which is connected to the inner cavity of the outer shell 1. The first bearing 32 can support the threaded cylinder 31 and improve the stability of the threaded cylinder 31 during movement.

[0030] A hollow cylinder 45 is slidably connected to the outside of the locking rod 46. A spring 47 is connected between the hollow cylinder 45 and the locking rod 46. A guide block 49 is connected to the top of the hollow cylinder 45. A slotted block 48 is slidably connected to the outside of the guide block 49. The slotted block 48 is connected to the inner cavity of the outer shell 1. The hollow cylinder 45 can guide the locking rod 46, allowing the locking rod 46 to slide inside it. The spring 47 can guide the locking rod 46 and pull the locking rod 46 back to its original position. The locking rod 46, in conjunction with the hollow cylinder 45 and the spring 47, and through the design of the top inclined surface, ensures that the locking rod 46, under normal conditions, only restricts the return of the support arm 34, and cannot restrict the descent of the support arm 34.

[0031] The hollow cylinder 45 is externally connected to connecting rods 44 via hinges. The other ends of the two connecting rods 44 are connected to push plates 43 via hinges. The push plates 43 are externally connected to a second threaded rod 41 via a bearing with a seat. A nut 42 is threaded onto the external part of the second threaded rod 41 and is welded to the inner cavity of the outer shell 1. Rotating the second threaded rod 41 can drive the push plates 43 to move, which in turn pulls the hollow cylinder 45 through the connecting rods 44.

[0032] This solution first moves the outer casing 1 to the designated position, then drives the worm gear 22 to rotate by rotating the rocker arm 2, which in turn drives the first conical tooth 21 to rotate, which in turn drives the second conical tooth 3 to rotate, which in turn drives the threaded cylinder 31 to rotate, and finally drives the second conical tooth 3 to descend, causing the outer casing 1 to rise and lift the dump truck steel plate. At the same time, rotating the second threaded rod 41 drives the push plate 43 to move, which in turn drives the connecting rod 44 to pull the hollow cylinder 45 and the locking rod 46 to move. The locking rod 46 inserts into the inner cavity of the slot 35 to lock the position of the support arm 34 a second time.

[0033] By adding a rocker arm 2, a worm gear 22, a worm wheel 23, a first conical tooth 21, a second conical tooth 3, a threaded cylinder 31, a first threaded rod 33, and a support arm 34, the position of the outer shell 1 is quickly lifted, thereby lifting the dump truck steel plate, improving the lifting efficiency of the dump truck steel plate, avoiding the problems of traditional jacks being difficult to use and prone to falling, and improving the repair speed of the dump truck steel plate. At the same time, by adding a slot 35 and a locking rod 46, the position of the support arm 34 is quickly locked after the support arm 34 moves, improving the stability of lifting the dump truck steel plate and preventing the dump truck steel plate from falling due to the support arm 34 returning to its original position.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A special tool for disassembling a safety support of a steel plate of a dump truck, comprising: The outer casing (1) and the rocker arm (2) are assembled inside the outer casing (1). The rocker arm (2) is characterized in that: a worm gear (22) is connected to the outside of the rocker arm (2), a worm wheel (23) is meshed with the top of the worm gear (22), a first conical tooth (21) is connected to the outside of the worm wheel (23), a second conical tooth (3) is meshed with the bottom of the first conical tooth (21), a threaded cylinder (31) is connected to the bottom of the second conical tooth (3), a first threaded rod (33) is threaded to the inner cavity of the threaded cylinder (31), a support arm (34) is connected to the bottom of the first threaded rod (33), and slots (35) are evenly provided on the outside of the support arm (34). Both ends of the inner cavity of the outer shell (1) are connected to a limiting mechanism (4), and the limiting mechanism (4) includes a locking rod (46).

2. A special tool for disassembling and assembling the safety support of the steel plate of a dump truck according to claim 1, characterized in that: The top of the outer shell (1) is fitted with a top plate (11), and a seated spherical bearing (24) is embedded on the left side of the outer shell (1). The seated spherical bearing (24) is connected to the worm gear (22).

3. A special tool for disassembling and assembling the safety support of the steel plate of a dump truck according to claim 1, characterized in that: The first threaded rod (33) is sleeved with a guide plate (36), and a guide arm (37) is inserted into the top of the guide plate (36). The guide arm (37) is connected to the bottom of the inner cavity of the outer shell (1).

4. A special tool for disassembling and assembling the safety support of the steel plate of a dump truck according to claim 1, characterized in that: The threaded cylinder (31) is fitted with a first bearing (32), which is connected to the inner cavity of the outer shell (1).

5. A special tool for disassembling and assembling the safety support of the steel plate of a dump truck according to claim 1, characterized in that: A hollow cylinder (45) is slidably connected to the outside of the lever (46). A spring (47) is connected between the hollow cylinder (45) and the lever (46). A guide block (49) is connected to the top of the hollow cylinder (45). A slotted block (48) is slidably connected to the outside of the guide block (49). The slotted block (48) is connected to the inner cavity of the outer shell (1).

6. A special tool for disassembling and assembling the safety support of the steel plate of a dump truck according to claim 5, characterized in that: The hollow cylinder (45) is connected to the outside of a connecting rod (44) by a hinge. The other end of the two connecting rods (44) is connected to a push plate (43) by a hinge. The outside of the push plate (43) is connected to a second threaded rod (41) by a bearing with a seat. The outside of the second threaded rod (41) is connected to a nut (42) by a thread. The nut (42) is welded to the inner cavity of the outer shell (1).

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