Wheel set synchronous lifting device

Abstract

The invention discloses a wheel set synchronous lifting device, and belongs to the technical field of rail transit vehicle wheel set manufacturing and maintenance auxiliary tools. The wheel set synchronous lifting device is provided with two hydraulic lifting mechanisms capable of moving to the lower portion of the shaft end of a wheel set; a lifting platform of the hydraulic lifting mechanism is fixedly connected with a supporting block, and a concave lifting face is formed on the upper surface of the supporting block and used for making radial contact with the shaft end. The lifting device further comprises a control pressing rod which is connected to the hydraulic operation connectors of the two hydraulic lifting mechanisms and used for synchronously driving the two hydraulic lifting mechanisms, the lifting device achieves the purpose that the two sides of the tightly-placed wheel pair are synchronously lifted and then related work is carried out under the condition that the wheel pair is not moved through an economical and safe technological method, and the working efficiency is greatly improved. The production efficiency is effectively improved, and the cost is saved.

Description

Technical Field

[0001] This invention relates to the field of auxiliary tooling technology for the manufacturing and maintenance of wheelsets of rail transit vehicles, and in particular to a wheelset synchronous lifting device. Background Technology

[0002] As a crucial component of the running gear of high-speed trains, wheelsets require work such as brake disc installation, noise reduction bolt tightening, and painting during both new construction and maintenance. Due to the compact placement and structural design of wheelsets, these operations often require rotation, typically achieved by pushing them along the track or lifting them for rotation. However, limited space is available for both new construction and maintenance. Pushing wheelsets requires significant space, while using fixed lifting platforms necessitates pushing and hoisting them to the platform, also requiring considerable space and manpower. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a wheelset synchronous lifting device that uses an economical and safe process to simultaneously lift both sides of tightly placed wheelsets on site for related work without moving the wheelsets.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] This invention discloses a wheelset synchronous lifting device, comprising:

[0006] Two hydraulic lifting mechanisms capable of being displaced to the lower part of the wheelset axle end;

[0007] The hydraulic lifting mechanism has a lifting platform fixedly connected to a support block, the upper surface of which has a concave lifting surface for radial contact with the shaft end; it also includes...

[0008] A control lever, which is connected to the hydraulic operation interface of the two hydraulic lifting mechanisms, is used to synchronously drive the two hydraulic lifting mechanisms.

[0009] Furthermore, the recessed support surface is a V-shaped groove, and the shaft end forms line contact with the sidewall of the V-shaped groove.

[0010] Furthermore, the recessed support surface is a V-shaped groove formed between the outer walls of the two rollers, and the rollers make rolling contact with the shaft end within the V-shaped groove.

[0011] Furthermore, the bottom of the hydraulic lifting mechanism is connected to a caster wheel at one end and a running wheel at the other end.

[0012] Furthermore, the control lever is equipped with a release switch and a lock switch, and an electric telescopic mechanism is provided at both ends inside the control lever. The electric telescopic mechanism is electrically connected to the release switch and the lock switch.

[0013] Furthermore, the hydraulic lifting mechanism is a horizontal jack.

[0014] Furthermore, a fixed shaft is fixedly connected to the front end of the housing of the hydraulic lifting mechanism, and a limit rod is connected between the fixed shaft and the connecting shaft at the top of the hydraulic lifting mechanism to control the lifting stroke of the support block.

[0015] In the above technical solution, the present invention provides a wheelset synchronous lifting device. Since two hydraulic lifting mechanisms can be displaced to the lower part of the wheelset axle end, after the hydraulic lifting mechanism is lifted, the top of the mechanism makes radial contact with the axle end through the concave lifting surface of the support block. The control pressure rod is connected to the hydraulic operation interface of the two hydraulic lifting mechanisms, thereby realizing the synchronous driving of the two hydraulic lifting mechanisms. This achieves the use of an economical and safe process method to simultaneously lift both sides of the tightly placed wheelset on site for related work without moving the wheelset, effectively improving production efficiency and saving costs. Attached Figure Description

[0016] 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 invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1a This is a schematic diagram of the wheel set synchronous lifting device disclosed in this invention in use.

[0018] Figure 1b This is a partially enlarged view of the connection position between the control lever and the hydraulic lifting mechanism disclosed in this invention;

[0019] Figure 2 This is an exploded view of the wheelset synchronous lifting device disclosed in this invention;

[0020] Figure 3a This is an isometric view of the hydraulic lifting mechanism disclosed in this invention;

[0021] Figure 3b This is an isometric view of the hydraulic lifting mechanism disclosed in this invention from another perspective;

[0022] Figure 4 This is an exploded view of the hydraulic lifting mechanism disclosed in this invention.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Hydraulic lifting mechanism; 2. Support block; 3. Control lever; 3-1. Electric telescopic mechanism; 4. Roller; 5. Caster wheel; 6. Wheels; 7. Release switch; 8. Locking switch; 9. Wheelset; 10. Housing; 11. Hydraulic device; 12. Linkage bracket; 13. Limiting rod; 14. Fixed shaft. Detailed Implementation

[0025] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0026] See Figure 1a , 2 As shown;

[0027] An invention provides a wheelset synchronous lifting device, comprising: two hydraulic lifting mechanisms 1 and a control lever 3 connecting the two hydraulic lifting mechanisms;

[0028] Two hydraulic lifting mechanisms 1 can be displaced to the lower part of the wheel set 9 axle end respectively. One end of the bottom of the hydraulic lifting mechanism is connected to a caster wheel 5, and the other end is connected to a wheel 6. A support block 2 is fixedly connected to the lifting platform of the hydraulic lifting mechanism 1. The upper surface of the support block 2 forms a concave lifting surface for radial contact with the axle end. The control pressure rod 3 is connected to the hydraulic operation interface of the two hydraulic lifting mechanisms 1, and synchronously drives the two hydraulic lifting mechanisms 1 to lift the two sides of the wheel set 9 synchronously. The hydraulic lifting mechanism 1 is a horizontal jack in the prior art, the brand is HUGO, and the model is 2.5T.

[0029] In use, the hydraulic lifting mechanism can be raised and lowered by pressing the control lever 3 up and down. The control lever 3 is equipped with a release switch 7 and a lock switch 8 to control the hydraulic lifting mechanism 1. The release switch 7 is used to realize the function of the hydraulic lifting mechanism's descent return, and the lock switch 8 is used to realize the height lock function of the hydraulic lifting mechanism behind the lifting wheelset 9.

[0030] In a preferred embodiment, the concave support surface of the support block 2 is a V-shaped groove, and the shaft end forms line contact with the side wall of the V-shaped groove, resulting in a simple structure.

[0031] In another preferred embodiment, the concave lifting surface is a V-shaped groove formed between the outer walls of two rollers 4 spaced apart. The rollers 4 roll in contact with the shaft end within the V-shaped groove. The rollers 4 are matched with the shaft diameter of the wheelset 9. The rollers are made of nylon. The two nylon rollers on the support block 2 are matched with the shaft diameter of the wheelset 9, so as to support and rotate the wheelset 9 in the lifted state without damaging the shaft diameter.

[0032] Preferably, the control lever 3 has a concave structure, such as... Figure 1b , Figure 2As shown, a release switch 7 is installed on the right side of the horizontal section of the control lever 3, and a locking switch 8 is installed on the left side. Electric telescopic mechanisms 3-1 are installed at both ends of the control lever 3. The electric telescopic mechanism 3-1 has two telescopic rods, a first telescopic rod and a second telescopic rod. The first telescopic rod is connected to the hydraulic pipeline of the hydraulic lifting mechanism. The first telescopic rod is used to replace the pressure relief valve at the tail of the hydraulic lifting mechanism, and the second telescopic rod is used to replace the end of the lever at the point where the handle of the hydraulic lifting mechanism is pressed down.

[0033] The circuit of the electric telescopic mechanism 3-1 is electrically connected to the release switch 7 and the locking switch 8. The release switch 7 is a non-locking switch and is connected to the electric telescopic mechanism 3-1 at the end of the control rod 3 through the circuit inside the control rod 3. Since the electric telescopic mechanism 3-1 is used instead of the pressure relief valve at the tail of the hydraulic lifting mechanism, when the release switch 7 is pressed, the telescopic mechanism 3-1 retracts and the hydraulic lifting mechanism is depressurized. When not pressed, the electric telescopic mechanism 3-1 extends and the hydraulic lifting mechanism maintains the lifting position.

[0034] The locking switch 8 is a self-locking switch, connected to the electric telescopic mechanism 3-1 at the end of the control lever 3 via an internal circuit. This electric telescopic mechanism replaces the lever end at the hydraulic lifting mechanism's handle pressing point. Pressing the locking switch 8 retracts the lever at the handle pressing point, preventing further pressing and lifting. Pressing the locking switch 8 again extends the lever at the handle pressing point, allowing for continued pressing and lifting.

[0035] See Figure 4 As shown:

[0036] The hydraulic lifting mechanism 1 mainly includes casters 5, wheels 6, housing 10, hydraulic device 11, connecting rod bracket 12, limit rod 13, and fixed shaft 14;

[0037] The housing 10 carries a hydraulic device 11 and a connecting rod bracket 12. The hydraulic device 11 provides power to drive the connecting rod bracket 12 to rise or fall. One end of the housing 10 is equipped with a caster wheel 6 and the other end is equipped with a universal wheel 5 for moving the hydraulic lifting mechanism. A support block 2 is fixedly connected to the top support head mounting seat of the connecting rod bracket 12. A fixed shaft 14 is fixedly connected to the front end of the housing 10. A limit rod 13 is connected between the connecting shaft of the connecting rod bracket 12 at the front end of the support head mounting seat and the fixed shaft 14. The limit rod 13 has an elongated hole for cooperating with the connecting shaft of the support head mounting seat to limit the lifting height of the connecting shaft, thereby controlling the lifting stroke of the hydraulic lifting mechanism 1. The limit rod 12 can be marked with scale lines on the side of the elongated hole to mark the lifting stroke, so as to accurately control the lifting height and realize the subsequent work requirements such as the rotation of the lifting wheel pair 9 after the lifting device is levied.

[0038] In the above technical solution, the present invention provides a wheelset synchronous lifting device, the method of use of which is as follows:

[0039] Push the two sets of hydraulic lifting mechanisms 1 to the underside of the wheel set 9 axle diameter and align them with the axle diameter. Connect the control lever 3 to the hydraulic operation interface at the rear of the hydraulic lifting mechanism 1. After connection, lift the wheel set 9 by pressing the control lever 3 up and down. Limit the stroke using the graduated limit rod in the hydraulic lifting mechanism 1. After lifting the wheel set 9 to a position where it can rotate in the air, rotate the wheel set 9 to perform the required work. Alternatively, you can use extension rods of the corresponding specifications on both sides to connect to the hydraulic operation interface at the rear of the hydraulic lifting mechanism 1. Lift the wheel set 9 by operating according to the limit scale on both sides simultaneously.

[0040] The wheelset 9 synchronous lifting device is applied to the manufacturing and advanced repair of wheelsets 9. It can achieve the tight placement and fixation of wheelsets 9 on site. Utilizing the limited space under the axle diameters on both sides of the wheelset 9, the device is moved to the position under the axle diameters at both ends of the corresponding wheelset 9. The hydraulic lifting mechanism lifts both sides of the wheelset 9 simultaneously, and then the wheelset 9 can be rotated in place for subsequent operations. This effectively avoids the need for a large area and manpower to push the wheelset 9 for operations, and also effectively avoids the manpower and time required to hoist or push the relevant wheelset 9 to the fixed lifting platform.

[0041] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. 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 foregoing 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 wheel set synchronous lifting device, characterized in that, The utility model relates to a kind of wheelset synchronous lifting devices comprising: Two hydraulic lifting mechanisms (1) capable of displacement to the lower part of wheelset axle end; The lifting platform of the hydraulic lifting mechanism (1) is fixed with a supporting block (2), the upper surface of the supporting block (2) is formed with a concave lifting surface for radial contact with the axle end;Further comprising Control pressure rod (3) is connected to the hydraulic operating interface of two hydraulic lifting mechanisms (1), for synchronously driving two hydraulic lifting mechanisms (1).

2. The wheelset synchronous lifting device according to claim 1, wherein: The concave lifting surface is a V-shaped groove, and the axle end forms a line contact with the side wall of the V-shaped groove.

3. The wheelset synchronous lifting device according to claim 1, wherein: The concave lifting surface is a V-shaped groove formed between the outer walls of two rollers (4), and the axle end rolls in the V-shaped groove through the rollers (4).

4. The wheelset synchronous lifting device according to any one of claims 1-3, wherein: One end of the bottom of the hydraulic lifting mechanism (1) is connected with a universal wheel (5), and the other end is connected with a walking wheel (6).

5. The wheelset synchronous lifting device according to any one of claims 1-3, wherein: A relief switch (7) and a lock switch (8) are installed on the control pressure rod (3), and an electric telescopic mechanism (3-1) is arranged at both ends of the control pressure rod (3) inside, and the electric telescopic mechanism (3-1) is connected with the relief switch (7) and the lock switch (8) in circuit.

6. The wheelset synchronous lifting device according to any one of claims 1-3, wherein: The hydraulic lifting mechanism (1) is a horizontal jack.

7. The wheelset synchronous lifting device according to claim 6, wherein: A fixed shaft (14) is fixed to the front end of the shell (10) of the hydraulic lifting mechanism (1), a limit rod (13) is connected between the fixed shaft (14) and the connecting shaft at the top end of the hydraulic lifting mechanism (1), for controlling the lifting stroke of the supporting block (2).

Images