Auxiliary device for disassembling and assembling transmission shaft of engineering truck

Abstract

The invention provides an auxiliary device for dismounting and mounting a transmission shaft of an engineering vehicle. Relates to the field of railway vehicle maintenance auxiliary equipment, and aims to solve the problem of poor adaptability caused by poor adjustability in the disassembly and assembly process of a transmission shaft of an engineering vehicle at present, a three-axis adjusting assembly is arranged to carry out three-axis adjustment on a bearing assembly making contact with the transmission shaft, and the requirement for fine adjustment of the position during disassembly and assembly is met; in the bearing assembly, a scissor jack is used for adjusting a movable support on one side, the included angle of the connecting line of the movable support and a fixed support relative to the horizontal direction is adjusted, the bearing requirements of the transmission shaft in different dip angle states are met, and the reliability during overhauling work is improved.

Description

Technical Field

[0001] The invention relates to the field of rail vehicle maintenance auxiliary equipment, and in particular to an auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle. Background Art

[0002] Powered rail engineering vehicles are mainly used in the construction and maintenance of railways and urban rail transit. They are usually equipped with powerful power systems and can perform a series of complex engineering tasks, such as traction, driving, line maintenance, rescue traction, and detection equipment. According to the maintenance regulations for engineering vehicles, after a certain period of operation, the core components of the transmission mechanism of powered rail engineering vehicles must be disassembled, stripped, flawed, and dynamically balanced.

[0003] During the disassembly of the transmission shaft, a tool is required to support the transmission shaft for disassembly and transfer. During the installation of the transmission shaft, a tool is also required to support the transmission shaft for position adjustment and installation. For the tool used in this process, a Chinese patent (publication number: CN219636816U) provides a lifting platform for assisting the removal of vehicle parts, which is used in the field of mining operation vehicles. By changing the height of the lifting platform itself, the height of the lifting platform can be adapted to the parts to be disassembled; however, during the disassembly and installation process, the tool also needs to adapt to the transmission shaft angle. Although the lifting platform for assisting the removal of vehicle parts can adapt to the tilt angle through the ball head, it cannot accurately adjust the tilt angle, resulting in the inability to adapt to the transmission shaft state during the disassembly and installation process, and the bearing reliability of the transmission shaft is low; in addition, the bearing position of the contacting transmission shaft is sliding friction, which is inconvenient to realize the rotation action of the transmission shaft during the disassembly and installation process, affecting the disassembly and installation efficiency of the transmission shaft. Summary of the invention

[0004] The purpose of the present invention is to provide an auxiliary device for disassembling and assembling the transmission shaft of an engineering vehicle in response to the defects of the prior art. A three-axis adjustment component is provided to adjust the bearing component in contact with the transmission shaft on three axes to meet the demand for fine-tuning the position during disassembly and assembly; a scissor jack is used to adjust the movable support on one side of the bearing component to achieve the angle adjustment of the connecting line of the movable support and the fixed support relative to the horizontal direction, adapt to the load requirements of the transmission shaft under different inclination angles, and improve the reliability during maintenance work.

[0005] In order to achieve the above purpose, the following technical solutions are adopted:

[0006] A drive shaft disassembly and assembly auxiliary device for an engineering vehicle comprises a base, a three-axis adjustment assembly and a bearing assembly connected in sequence, wherein the three-axis adjustment assembly can drive the bearing assembly to adjust in three-axis directions relative to the base; the bearing assembly comprises a scissor jack, a movable support and a fixed support, the scissor jack and the fixed support are installed at intervals at the output end of the three-axis adjustment assembly, the movable support is installed on the scissor jack, an open groove is provided on the movable support to form a movable support portion, and an open groove is provided on the fixed support to form a fixed support portion.

[0007] Furthermore, the opening groove is an arc-shaped structure, and balls are respectively arranged on both sides of the arc-shaped structure, and two balls in the same opening groove jointly support the transmission shaft.

[0008] Furthermore, the open slot is a through slot, and the scissor jack drives the movable support part to change its position with the three-axis adjustment component to adjust the angle of the line between the movable support part and the fixed support part relative to the horizontal direction.

[0009] Furthermore, one end of the adjusting screw rod of the scissor jack is connected to a hand wheel, and the other end is provided with an operating part for cooperating with an external tool.

[0010] Furthermore, the movable support is an L-shaped plate, one limb of the L-shaped plate is fixed to the scissor jack, and a movable supporting portion is formed on the other limb.

[0011] Furthermore, the fixed support is also an L-shaped plate, one limb of which is fixed to the output end of the three-axis adjustment component, and a fixed support portion is formed on the other limb.

[0012] Furthermore, the three-axis adjustment assembly includes a vertical lifting mechanism, a first horizontal adjustment assembly and a second horizontal adjustment assembly, the first horizontal adjustment assembly is connected to the vertical lifting mechanism through the second horizontal adjustment assembly, and the vertical lifting mechanism is installed on the base.

[0013] Furthermore, the vertical lifting assembly includes a screw slider mechanism, a guide mechanism and a vertical driving mechanism. The vertical driving mechanism is connected to the slider of the screw slider mechanism, and the screw of the screw slider mechanism is driven to rise and fall vertically through the slider. The screw is connected to the second horizontal adjustment assembly; the guide mechanism includes a guide rod and a guide cylinder. The guide cylinder is fixed to the base, one end of the guide rod is inserted into the guide cylinder to form a sliding connection, and the other end is connected to the base, and the axis of the guide rod is parallel to the axis of the screw.

[0014] Furthermore, the first horizontal adjustment component and the second horizontal adjustment component are both slide rail slider mechanisms, the first horizontal adjustment component is connected to a slider of the slide rail slider mechanism corresponding to the first horizontal adjustment component, and a bearing component is installed on the slider of the slide rail slider mechanism corresponding to the first horizontal adjustment component.

[0015] Furthermore, the base is connected to a universal caster, and the end of the three-axis adjustment component is connected to an adjustable strap.

[0016] Compared with the prior art, the present invention has the following advantages and positive effects:

[0017] (1) In view of the problem of poor adaptability caused by poor adjustability during the disassembly and assembly of the current engineering vehicle drive shaft, a three-axis adjustment component is set to adjust the bearing component that contacts the drive shaft on three axes to meet the need for fine adjustment of the position during disassembly and assembly; a scissor jack is used to adjust the movable support on one side of the bearing component to achieve the angle adjustment of the connecting line between the movable support and the fixed support relative to the horizontal direction, adapt to the drive shaft load requirements under different inclination angles, and improve the reliability during maintenance work.

[0018] (2) An open groove is used to accommodate and support the transmission shaft, constrain the position of the transmission shaft, adapt to the working state, and set an auxiliary strap to tie the transmission shaft to maintain its stability.

[0019] (3) A ball structure is arranged in the open groove, and the ball can be used to quickly adjust the position of the transmission shaft relative to the auxiliary equipment in its axial direction, thereby reducing the problem of scratching and damage to the transmission shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0021] Figure 1 It is a schematic diagram of the auxiliary device for disassembling and assembling the transmission shaft of an engineering vehicle in an embodiment of the present invention.

[0022] Figure 2 It is a schematic diagram of the connection of the three-axis adjustment component to the bearing component in an embodiment of the present invention.

[0023] In the figure, 1. movable support, 2. scissor jack, 3. handwheel, 4. first horizontal adjustment component, 5. guide rod, 6. guide cylinder, 7. base, 8. vertical drive mechanism, 9. screw slider mechanism, 10. second horizontal adjustment component, 11. fixed support, 12. ball bearing, 13. fixed support part, 14. strap, 15. operating part, 16. adjustment screw rod, 17. movable support part, 18. universal caster. DETAILED DESCRIPTION

[0024] In a typical embodiment of the present invention, Figure 1-Figure 2 As shown, a drive shaft disassembly and assembly auxiliary device for an engineering vehicle is proposed.

[0025] When power rail engineering vehicles are being overhauled, the drive shaft needs to be disassembled and assembled. However, the current tooling has poor adaptability, and it is inconvenient to establish a load-bearing relationship for some drive shafts that are in a tilted or misaligned state, resulting in poor overall load-bearing reliability and low maintenance efficiency.

[0026] Based on this, the present embodiment provides an auxiliary device for disassembly and assembly of the drive shaft of an engineering vehicle, which is provided with a three-axis adjustment component and a load-bearing component. The three-axis adjustment component realizes position adjustment in the vertical, first horizontal direction and second horizontal direction. The load-bearing component can adjust its load-bearing inclination angle to adapt to the tilt state of the drive shaft, thereby facilitating maintenance work.

[0027] Below, the auxiliary device for disassembling and assembling the transmission shaft of an engineering vehicle is described in detail with reference to the accompanying drawings.

[0028] See also Figure 1 , an auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle can be applied to the disassembling and assembling working conditions of the transmission shaft of an engineering vehicle to assist in completing the disassembling and assembling process. It is mainly composed of three parts: a base 7, a three-axis adjustment component and a bearing component. Among them, the base 7 serves as the basis of the entire device and provides stable support for other components. The three-axis adjustment component is installed on the base 7. By using its multi-directional adjustment function, it can drive the bearing component to be precisely adjusted in three axial directions to meet the needs of disassembling and assembling the transmission shaft of different engineering vehicles.

[0029] The bearing assembly is connected to the output end of the three-axis adjustment assembly, and the bearing assembly mainly includes three parts: a scissor jack 2, a movable support 1, and a fixed support 11. The scissor jack 2 and the fixed support 11 are installed at the output end of the three-axis adjustment assembly at a certain interval, and the two work together to provide support for the disassembly and assembly of the transmission shaft from two positions distributed at intervals. At the same time, the movable support 1 is installed on the scissor jack 2, and the vertical height position is adjusted by the scissor jack 2. An open groove is provided on the movable support 1 to form a movable support portion 17, so that the transmission shaft can be flexibly supported during the disassembly and assembly process. Similarly, an open groove is also provided on the fixed support 11 to form a fixed support portion 13, which provides a stable fixing point for the transmission shaft and maintains the stability of the transmission shaft from two points.

[0030] In actual operation, engineers can adjust the position of the bearing assembly through the three-axis adjustment assembly as needed, so that the movable support part 17 and the fixed support part 13 can adapt to transmission shafts of different lengths and postures. By using the lifting function of the scissor jack 2 and the three-axis adjustment assembly, engineers can easily complete the disassembly and assembly of the transmission shaft, greatly improving work efficiency and reducing labor intensity.

[0031] like Figure 2As shown, the opening groove is an arc-shaped structure, and balls 12 are respectively arranged on both sides of the arc-shaped structure. The two balls 12 in the same opening groove jointly support the transmission shaft. The arc-shaped structure of the opening groove is designed to better adapt to the shape of the transmission shaft and provide a more uniform and stable supporting force. The transmission shaft is located in the opening groove, which is equivalent to being constrained in the concave position, and can prevent the opening groove from deviating and falling out during movement.

[0032] Balls 12 are provided on both sides of the arc structure. The balls 12 are made of wear-resistant and low-friction materials, such as stainless steel or ceramic, to ensure long-term stable use. When the transmission shaft is placed in the open slot, the two balls 12 jointly support the transmission shaft, effectively reducing the sliding friction between the transmission shaft and the open slot, forming rolling friction, reducing the resistance when adjusting the position, and making the disassembly and assembly of the transmission shaft smoother and more efficient.

[0033] like Figure 1 and Figure 2 As shown, the opening slot is designed as a through slot. By adjusting the height of the scissor jack 2, the angle between the connecting line of the movable support part 17 and the fixed support part 13 relative to the horizontal direction can be changed, thereby adapting to the disassembly and assembly requirements of the transmission shaft at different angles, greatly improving the flexibility and versatility of the device.

[0034] The ball 12 may be in the form of a ball universal wheel, with its main body fixed to the open groove, and the ball 12 portion serving as a structure that contacts the transmission shaft.

[0035] In order to facilitate the operator to adjust the height of the scissor jack 2, one end of the adjusting screw rod 16 of the scissor jack 2 is connected to the hand wheel 3, and the other end is provided with an operating part 15 for cooperating with an external tool. The design of the hand wheel 3 allows the operator to easily adjust the height of the scissor jack 2 by rotating the hand wheel 3, and the operating part 15 provides more adjustment methods, such as fine adjustment using tools such as a wrench or a screwdriver, to meet more precise height adjustment needs.

[0036] In order to improve the stability and bearing capacity of the device, both the movable support 1 and the fixed support 11 adopt an L-shaped plate structure. One limb of the movable support 1 is fixed to the scissor jack 2, and the other limb forms a movable support portion 17 to ensure a stable connection between the movable support 1 and the scissor jack 2. Similarly, one limb of the fixed support 11 is fixed to the output end of the three-axis adjustment component, and the other limb forms a fixed support portion 13 to provide a stable fixing point for the transmission shaft.

[0037] In addition, the three-axis adjustment component includes a vertical lifting mechanism, a first horizontal adjustment component 4 and a second horizontal adjustment component 10, which work together to achieve precise adjustment of the bearing component in three axial directions. A three-axis coordinate system is established with the vertical direction as the Z axis, the movement direction of the first horizontal adjustment component 4 as the X axis, and the movement direction of the second horizontal adjustment component 10 as the Y axis. The X axis, the Y axis and the Z axis are orthogonal. The first horizontal adjustment component 4 is connected to the vertical lifting mechanism through the second horizontal adjustment component 10, and the vertical lifting mechanism is installed on the base 7, providing a stable foundation for the entire device.

[0038] Specifically, the vertical lifting assembly adopts a combination structure of a screw slider mechanism 9, a guide mechanism and a vertical drive mechanism 8. The vertical drive mechanism 8 is connected to the slider of the screw slider mechanism 9, and the slider drives the screw of the screw slider mechanism 9 to rise and fall vertically, wherein the slider can adopt a nut structure, and the vertical drive mechanism 8 adopts a motor with gear meshing transmission, the output shaft of the motor is connected to a gear, the gear meshes with the tooth structure connected to the nut, and the rotation of the motor drives the nut structure to rotate, thereby driving the matched screw to move upward along the screw shaft.

[0039] The lead screw is connected to the second horizontal adjustment assembly 10, thereby realizing vertical adjustment of the bearing assembly. In this embodiment, two groups of lead screw slider mechanisms 9 are provided, which are arranged at intervals in the horizontal direction. At the same time, the vertical drive mechanism 8 drives the two groups of lead screw slider mechanisms 9 through the transmission shaft at the same time to realize synchronous drive.

[0040] At the same time, the transmission shaft can also be connected to a manual adjustment wheel, through which the lead screw slider mechanism 9 can be precisely adjusted.

[0041] The guide mechanism includes a guide rod 5 and a guide cylinder 6. The guide cylinder 6 is fixed to the base 7. One end of the guide rod 5 penetrates into the guide cylinder 6 and forms a sliding connection, and the other end is connected to the base 7. The axis of the guide rod 5 is parallel to the axis of the screw to ensure the stability and accuracy of vertical lifting.

[0042] like Figure 2 As shown, the first level adjustment component 4 and the second level adjustment component 10 are both slide rail slider mechanisms, which have the advantages of simple structure, convenient adjustment, strong bearing capacity, etc. The first level adjustment component 4 is connected to the slider of the slide rail slider mechanism corresponding to the first level adjustment component 4, and the bearing component is installed on the slider of the slide rail slider mechanism corresponding to the first level adjustment component 4, thereby realizing the horizontal adjustment of the bearing component.

[0043] The slide rail and slider mechanism can adopt a structure of a dovetail groove slider with a dovetail protrusion slide rail, which can realize guidance while constraining the freedom in other directions and improve the load-bearing capacity. Similarly, the slide rail and slider mechanism can be connected to a lead screw slider assembly for driving, and the lead screw of the lead screw slider assembly is equipped with a manual adjustment wheel to drive the dovetail groove slider to move relative to the dovetail protrusion slide rail.

[0044] In order to facilitate the movement and fixation of the device, a universal caster 18 is connected to the base 7, so that the device can be easily moved between different work sites. At the same time, an adjustable strap 14 is connected to the end of the three-axis adjustment component, and the transmission shaft carried by the strap 14 can be fixed by adjusting the strap 14, or the entire disassembly and assembly auxiliary device can be temporarily connected to the outside world to prevent it from moving or tipping over during work. The safety and stability of the device are greatly improved.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle, characterized in that: It includes a base, a three-axis adjustment component and a bearing component connected in sequence, the three-axis adjustment component can drive the bearing component to adjust in three-axis directions relative to the base; the bearing component includes a scissor jack, a movable support and a fixed support, the scissor jack and the fixed support are installed at intervals at the output end of the three-axis adjustment component, the movable support is installed on the scissor jack, the movable support is provided with an open groove to form a movable support part, and the fixed support is provided with an open groove to form a fixed support part.

2. The auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle according to claim 1, characterized in that: The opening groove is an arc-shaped structure, and balls are respectively arranged on both sides of the arc-shaped structure. Two balls in the same opening groove jointly support the transmission shaft.

3. The auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle according to claim 1 or 2, characterized in that: The open slot is a through slot, and the scissor jack drives the movable support part to change its position with the three-axis adjustment component to adjust the angle of the line between the movable support part and the fixed support part relative to the horizontal direction.

4. The auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle according to claim 1, characterized in that: One end of the adjusting screw rod of the scissor jack is connected with a hand wheel, and the other end is provided with an operating part for cooperating with an external tool.

5. The auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle according to claim 1 or 4, characterized in that: The movable support is an L-shaped plate, one limb of the L-shaped plate is fixed to the scissor jack, and a movable supporting part is formed on the other limb.

6. The auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle as claimed in claim 5, characterized in that: The fixed support is also an L-shaped plate, one limb of which is fixed to the output end of the three-axis adjustment component, and a fixed support portion is formed on the other limb.

7. The auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle as claimed in claim 1, characterized in that: The three-axis adjustment assembly includes a vertical lifting mechanism, a first horizontal adjustment assembly and a second horizontal adjustment assembly. The first horizontal adjustment assembly is connected to the vertical lifting mechanism through the second horizontal adjustment assembly, and the vertical lifting mechanism is installed on the base.

8. The auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle as claimed in claim 7, characterized in that: The vertical lifting assembly includes a screw slider mechanism, a guide mechanism and a vertical driving mechanism. The vertical driving mechanism is connected to the slider of the screw slider mechanism, and the screw of the screw slider mechanism is driven to rise and fall vertically through the slider. The screw is connected to the second horizontal adjustment assembly; the guide mechanism includes a guide rod and a guide cylinder. The guide cylinder is fixed to the base. One end of the guide rod penetrates into the guide cylinder and forms a sliding connection, and the other end is connected to the base. The axis of the guide rod is parallel to the axis of the screw.

9. The auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle according to claim 7 or 8, characterized in that: The first level adjustment component and the second level adjustment component are both slide rail slider mechanisms, the first level adjustment component is connected to the slider of the slide rail slider mechanism corresponding to the first level adjustment component, and the bearing component is installed on the slider of the slide rail slider mechanism corresponding to the first level adjustment component.

10. The auxiliary device for disassembling and assembling a transmission shaft of an engineering vehicle according to claim 1, characterized in that: The base is connected with a universal caster, and the end of the three-axis adjustment component is connected with an adjustable strap.

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