Transmission shaft lifter

Abstract

The utility model relates to the technical field of maintenance instruments, in particular to a transmission shaft lifting device which comprises a pair of jacks, bases are fixedly arranged at the bottoms of the jacks, the bases are connected together through a telescopic rod, a supporting rod is arranged at the top of a lifting rod of each jack, and the supporting rods are connected with the telescopic rod. And a supporting limiting device is fixedly arranged at the top of the supporting rod. Due to the fact that the base and the telescopic rod are arranged, the whole lifting device is convenient to move. In a field operation environment, an operation site is complex and changeable, and the lifter can be flexibly moved to a proper place according to an actual vehicle fault position so as to quickly carry out transmission shaft replacement work. The supporting and limiting device fixed to the top of the lifting rod of the jack can play a good role in supporting and limiting when the transmission shaft is lifted, and the stability of the transmission shaft in the maintenance process is guaranteed. Therefore, when maintenance personnel dismount, mount and overhaul the transmission shaft, the operation is more convenient and safer, the maintenance difficulty is reduced, and the labor intensity is reduced.

Description

Technical Field

[0001] This utility model relates to the field of maintenance equipment technology, and in particular to a drive shaft lifter. Background Technology

[0002] In routine military operations, the stable operation of military vehicles is crucial. Among them, the driveshafts of general-purpose vehicles and engineering equipment chassis serve as key transportation and operational carriers, and their proper functioning directly affects vehicle performance. However, the replacement of driveshafts for general-purpose vehicle and engineering equipment chassis currently faces extremely severe challenges in the maintenance of military vehicles.

[0003] In driveshaft maintenance, suspended lifting devices are installed on the ceiling or a specialized frame structure of the maintenance workshop. These devices typically consist of an electric or manual hoist, wire rope, and hooks. By connecting the wire rope to a suitable position on the driveshaft, the hoist's lifting function is used to lift it. However, this method is cumbersome, time-consuming, and its deployment and operation are severely limited in spaces with limited maintenance capacity. Particularly problematic in field environments, the uncertainty of the work site, the lack of adequate maintenance facilities, and the potential for unforeseen circumstances make driveshaft replacement extremely difficult. If a vehicle driveshaft fails and cannot be repaired promptly, it will severely impact troop deployment, material transport, and the smooth progress of various missions.

[0004] Extensive research and in-depth analysis have revealed that no similar technological equipment has yet emerged in the relevant technical field to effectively solve the aforementioned problems. Therefore, based on the actual operational needs of the military, it is imperative to invent a new tool that is small in size, easy to operate, convenient to move, simple in structure, and saves time and labor. This is of paramount practical significance for improving the military's equipment maintenance and support capabilities in complex environments. Utility Model Content

[0005] The purpose of this utility model is to provide a drive shaft lifter that can solve the above-mentioned technical problems.

[0006] This utility model provides a drive shaft lifter, including a pair of jacks. The bottom of each jack is fixedly provided with a base, and the bases are connected together by a telescopic rod. The top of the lifting rod of each jack is provided with a support rod, and the top of the support rod is fixedly provided with a support limiting device.

[0007] Furthermore, the telescopic rod includes a sleeve and a threaded rod. The bottom of the sleeve is fixedly connected to the top of one of the bases. The sleeve has an internal thread along its axial direction that matches the threaded rod. The threaded rod is threadedly connected to the sleeve. The top of the other base is provided with a bearing seat. One end of the threaded rod is fixedly sleeved together with the inner ring of the bearing seat.

[0008] Furthermore, the end of the threaded rod passes through the bearing housing and is fixedly provided with a handle.

[0009] Furthermore, the supporting and limiting device has an arc-shaped structure.

[0010] Furthermore, the bottom of the support rod is provided with a bolt, and the top of the lifting rod is provided with a threaded hole that matches the bolt. The support rod carrying support limiting devices of different specifications is threadedly fixedly connected to the lifting rod.

[0011] Furthermore, the support rod is externally fixed with a hexagonal head.

[0012] Furthermore, a guide assembly is provided on the base of the telescopic rod on the opposite side of the connection line between the two jacks. The guide assembly includes a hollow rod and a guide rod. The outer diameter of the hollow rod is the same as the inner diameter of the guide rod and the two are slidably connected.

[0013] Furthermore, the bottom of the base is equipped with casters with a self-locking structure.

[0014] Furthermore, both the telescopic rod and the guide assembly have detachable lever handles attached to their upper parts.

[0015] Furthermore, both the telescopic rod and the guide assembly have slots on their upper parts, and the lever handle is located in the slot and is interference-fitted with the slot.

[0016] Beneficial effects:

[0017] This utility model, equipped with a base and a retractable telescopic rod, facilitates the movement of the entire lifting device. In field environments where work sites are complex and varied, this lifting device can be flexibly moved to a suitable location based on the actual vehicle fault location, enabling rapid replacement of the driveshaft. This overcomes the difficulties of traditional methods in field environments due to the lack of complete maintenance facilities and uncertain work sites, effectively ensuring the equipment maintenance and support capabilities of troops in complex field environments. The support and limiting device fixed at the top of the jack lifting rod provides good support and limitation when lifting the driveshaft, ensuring the stability of the driveshaft during maintenance. This makes the operation more convenient and safer for maintenance personnel when disassembling, installing, and finely inspecting the driveshaft, greatly reducing the difficulty of maintenance and alleviating labor intensity. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model;

[0021] Figure 3 This is a schematic diagram of the overall structure of Embodiment 3 of this utility model;

[0022] Figure 4 This is a schematic diagram of the telescopic rod and handle in this utility model;

[0023] Figure 5 This is a structural schematic diagram illustrating the positional relationship between the hexagonal head and the support rod in this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1-jack, 2-base, 301-sleeve, 302-threaded rod, 4-support and limit device, 5-bearing seat, 6-handle, 7-bolt, 8-threaded hole, 9-hexagonal head, 1001-hollow rod, 1002-guide rod, 11-caster wheel, 12-lever handle, 13-slot, 14-handle sleeve, 15-lifting rod, 16-support rod. Detailed Implementation

[0025] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Example 1

[0029] A drive shaft lifter, such as Figure 1 and 4 As shown, the device includes a pair of jacks 1, with a base 2 fixedly mounted on the bottom of each jack 1. The bases 2 are connected together by a telescopic rod. The telescopic rod includes a sleeve 301 and a threaded rod 302. The bottom of the sleeve 301 is fixedly connected to the top of one of the bases. The sleeve 301 has an internal thread along its axial direction that matches the threaded rod 302. The threaded rod 302 is threadedly connected to the sleeve 301. A bearing seat 5 is mounted on the top of the other base. One end of the threaded rod 302 is fixedly fitted onto the inner ring of the bearing seat 5. The end of the threaded rod 302 passes through the bearing seat 5 and is fixedly provided with a handle 6. The handle can be adjusted as follows: Figure 1 As shown, the handle has a through hole, through which a long rod can be passed, and rotating the long rod causes the handle to rotate. The handle can also be as follows: Figure 4As shown in the diagram, the operator can easily screw the threaded rod 302 in or out of the sleeve 301 by simply turning the handle, thus conveniently adjusting the length of the telescopic rod. A base is firmly fixed at the bottom of the jack; these two bases are not isolated but tightly connected by a flexible telescopic rod. This telescopic rod allows for free adjustment of the distance between the two bases according to the needs of the actual working scenario, thereby adapting to lifting operations with drive shafts of different lengths.

[0030] The lifting rod 15 of the jack 1 has a support rod 16 at its top, and a support limiting device 4 is fixedly installed at the top of the support rod 16. The support limiting device 4 has an arc-shaped structure. The main function of this device is to precisely lift the drive shaft while limiting its movement, preventing displacement or shaking during the lifting process, and effectively ensuring the safety and stability of the entire lifting operation. This arc-shaped structure can better conform to the outer contour of the drive shaft, providing a larger contact area during the lifting process, dispersing the pressure on the drive shaft, and avoiding damage to the surface of the drive shaft. The bottom of the support limiting device is connected to the lifting rod of the jack through the support rod. The support rod acts as a bridge, stably transmitting the lifting force of the jack to the support limiting device, ensuring that the drive shaft can be lifted safely and smoothly.

[0031] A guide assembly is provided on the base on one side of the connection line between the two jacks along the telescopic rod. The guide assembly includes a hollow rod 1001 and a guide rod 1002. The outer diameter of the hollow rod 1001 is the same as the inner diameter of the guide rod 1002, and the two are slidably connected. The guide rod 1002 can slide freely within the hollow rod 1001, thereby providing precise guidance for the movement of the base and preventing the base from shifting when adjusting the length of the telescopic rod or lifting the drive shaft, ensuring that the entire lifting operation remains stable and precise. The bottom of the base is equipped with casters 11 with a self-locking structure.

[0032] Example 2

[0033] The structure of this embodiment is basically the same as that of embodiment 1, such as... Figure 2 and 5 As shown, the difference is that: the bottom of the support rod 16 is provided with a bolt 7, the top of the lifting rod 15 is provided with a threaded hole 8 that matches the bolt 7, the support rod carrying support limiting devices of different specifications is threadedly fixed to the lifting rod, and the external fixing sleeve of the support rod 16 is provided with a hexagonal head 9.

[0034] To meet the lifting needs of drive shafts of different specifications, bolts are installed at the bottom of the support rod, and corresponding threaded holes are provided at the top of the lifting rod to match the bolts. This allows operators to carry support rods with different specifications of support and limiting devices and fix them to the lifting rod via threaded connections, according to actual needs. This flexible design enables the drive shaft lifter to adapt to diverse working scenarios, greatly expanding its applicability. During the installation or removal of the support rod, a hexagonal head is fixed to the outside of the support rod for easy operation. Operators can use tools such as wrenches to tighten or loosen the support rod using the hexagonal head, which is convenient and labor-saving, further improving the ease of equipment maintenance and adjustment.

[0035] Example 3

[0036] The structure of this embodiment is basically the same as that of embodiment 1, such as... Figure 3 As shown, the difference lies in the fact that both the telescopic rod and the guide assembly have detachable lever handles 12 connected to their upper parts. Specifically, both the telescopic rod and the guide assembly have slots 13 on their upper parts. The slots 13 are made of a material with a certain degree of elasticity. The lever handle 12 is located in the slot 13 and is press-fitted into the slot. The lever handle 12 is a telescopic structure. In use, the lever handle 12 is removed from the slot 13, extended, and inserted into the handle sleeve 14 of the jack. The handle sleeve 14 is then moved up and down to allow the lifting rod 15 to rise smoothly. When not in use, the lever handle is returned to the slot to prevent loss.

[0037] Working and usage process:

[0038] Place this device below the drive shaft. Adjust the length of the telescopic rod by turning handle 6, thereby changing the distance between the two jacks 1. Then, insert the handle into the handle sleeve 14 and move the handle sleeve 14 up and down to make the lifting rod 15 rise smoothly, thus lifting the drive shaft. During maintenance, the drive shaft remains in a fixed position, allowing maintenance personnel to operate tools freely with both hands and focus on the maintenance work without being distracted by supporting the drive shaft, thereby improving maintenance efficiency and work quality. It also allows maintenance personnel to more easily inspect, disassemble, install, and maintain the drive shaft and its surrounding components, improving maintenance efficiency and reducing maintenance difficulty.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A drive shaft lifter, characterized in that, It includes a pair of jacks, the bottom of which is fixedly provided with a base. The bases are connected together by a telescopic rod. The top of the lifting rod of the jack is provided with a support rod, and the top of the support rod is fixedly provided with a support limiting device.

2. The drive shaft lifter according to claim 1, characterized in that, The telescopic rod includes a sleeve and a threaded rod. The bottom of the sleeve is fixedly connected to the top of one of the bases. The sleeve has an internal thread that matches the threaded rod along its axial direction. The threaded rod is threadedly connected to the sleeve. The top of the other base is provided with a bearing seat. One end of the threaded rod is fixedly sleeved together with the inner ring of the bearing seat.

3. The drive shaft lifter according to claim 2, characterized in that, The end of the threaded rod passes through the bearing housing and is fixedly equipped with a handle.

4. The drive shaft lifter according to claim 1, characterized in that, The supporting and limiting device has an arc-shaped structure.

5. The drive shaft lifter according to claim 1, characterized in that, The bottom of the support rod is provided with a bolt, and the top of the lifting rod is provided with a threaded hole that matches the bolt. The support rod carrying support limiting devices of different specifications is threadedly fixed to the lifting rod.

6. The drive shaft lifter according to claim 5, characterized in that, The support rod is externally fixed with a hexagonal head.

7. The drive shaft lifter according to claim 1, characterized in that, The telescopic rod is provided with a guide assembly on the base on the opposite side of the connection line between the two jacks. The guide assembly includes a hollow rod and a guide rod. The outer diameter of the hollow rod is the same as the inner diameter of the guide rod and the two are slidably connected.

8. The drive shaft lifter according to claim 1, characterized in that, The base is equipped with casters with a self-locking mechanism at its bottom.

9. The drive shaft lifter according to claim 7, characterized in that, Both the telescopic rod and the guide assembly have detachable lever handles attached to their upper parts.

10. The drive shaft lifter according to claim 9, characterized in that, Both the telescopic rod and the guide assembly have slots on their upper parts, and the lever handle is located in the slot and is interference-fitted with the slot.

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