A welding support and positioning fixture for a tunneling machine

Abstract

This utility model discloses a welding support and positioning fixture for a tunneling machine, including a work frame connected to one side of the top of the work platform, and a front support frame connected to the top of the work platform away from the work frame; a rear support frame is also provided on the work frame facing the front support frame, and a support assembly for horizontal adjustment facing the front support frame is connected to the top of the work frame. The advantages of this utility model compared to the prior art are: it provides a welding support and positioning fixture for a tunneling machine that reduces material waste and ensures construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tunneling machine parts processing technology, specifically to a tunneling machine welding support and positioning fixture. Background Technology

[0002] During the manufacturing process of tunneling machines, the welding precision of the rear support components directly affects the overall assembly quality and operational stability of the tunneling machine.

[0003] Currently, the industry generally adopts the traditional "welded tie rod support" method for welding and positioning the rear support of tunneling machines: that is, the rear support workpiece is first suspended by a crane for a long time, and then four special welding tie rods are welded to temporarily fix the workpiece. After the welding is completed, the welding tie rods need to be cut and the cut parts of the rear support workpiece need to be ground.

[0004] When used:

[0005] Different models of rear support workpieces require matching welding tie rods of different specifications. The tie rods are only used once and cannot be reused after cutting, resulting in a large consumption of steel and welding auxiliary materials (welding wire, shielding gas, etc.).

[0006] The crane needs to be occupied for a long time (to assist in workpiece positioning and tie rod welding), and the tie rod welding, cutting and workpiece grinding processes add extra time, thus extending the overall production cycle;

[0007] During crane lifting, the workpiece is prone to shaking. When welding the tie rod, the operator needs to work at close range, which poses a safety hazard of workpiece falling or burns from welding sparks.

[0008] After cutting the tie rod, the surface of the workpiece needs to be polished. If the polishing precision is not properly controlled, it can easily affect the dimensional accuracy and surface roughness of the subsequent supporting workpiece.

[0009] To solve the above problems, it is urgent to design a new type of welding support positioning fixture that is compatible with multiple models of rear supports and does not require temporary welding ties. Utility Model Content

[0010] (I) Problems to be solved

[0011] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide a welding support and positioning fixture for tunneling machines that reduces material waste and ensures construction efficiency.

[0012] (II) Technical Solution

[0013] To solve the above-mentioned technical problems, the technical solution provided by this utility model is: a welding support and positioning fixture for a tunneling machine, including a work frame connected to the top of the work platform on one side, and a front support frame connected to the top of the work platform away from the work frame;

[0014] The work frame is also provided with a rear support frame facing the front support frame, and the top of the work frame is also connected to a support assembly that is horizontally adjustable towards the front support frame.

[0015] As an improvement, the front support frame is further provided with a foot protruding outwards towards the rear support frame.

[0016] As an improvement, the support assembly includes a sliding frame slidably connected to the top of the work frame and a support cylinder for driving the horizontal displacement of the sliding frame. A hydraulic pump station is also provided on the top of the work platform and connected to the support cylinder.

[0017] As an improvement, an abutting beam is connected to the sliding frame on the side facing the rear support frame, and several rubber support feet are connected to the abutting beam.

[0018] As an improvement, the top of the work frame is provided with a linear guide rail, and the bottom wall of the sliding frame is slidably sleeved with the linear guide rail.

[0019] (III) Beneficial Effects

[0020] The advantages of this utility model compared with the prior art are as follows: the auxiliary equipment provided in this application does not require welding of temporary tie rods during subsequent workpiece processing, saving the processes of tie rod procurement, welding, cutting and workpiece grinding, and does not require long-term crane holding. The workpiece is stably positioned by the support cylinder, increasing the operator's working distance and avoiding the risk of shaking or falling. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a welding support and positioning fixture for a tunneling machine.

[0022] Figure 2 This is a top view of a welding support and positioning fixture for a tunneling machine.

[0023] Figure 3 This is a schematic diagram of the workpiece's structure.

[0024] As shown in the figure: 1. Working platform; 2. Working frame; 3. Front support frame; 4. Rear support frame; 5. Support foot; 6. Sliding frame; 7. Support cylinder; 8. Hydraulic pump station; 9. Contact beam; 10. Rubber support foot; 11. Linear guide rail; 12. Workpiece. Detailed Implementation

[0025] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0026] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly associated with those skilled in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] To make the content of this utility model easier to understand, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0030] Please refer to the appendix carefully. Figure 1-3 A welding support and positioning fixture for a tunneling machine includes a work frame 2 connected to the top side of the work platform 1, and a front support frame 3 connected to the top side of the work platform 1 away from the work frame 2.

[0031] The work frame 2 is also provided with a rear support frame 4 facing the front support frame 3. The top of the work frame 2 is also connected to a support assembly that is horizontally adjustable towards the front support frame 3. The front support frame 3 is also provided with a foot 5 protruding outward on the side facing the rear support frame 4, which is convenient for clamping the workpiece against the front end face.

[0032] The support assembly includes a sliding frame 6 that is slidably connected to the top of the work frame 2 and a support cylinder 7 for driving the horizontal displacement of the sliding frame 6. A hydraulic pump station 8 is also connected to the top of the work platform 1 and the support cylinder 7. An abutting beam 9 is connected to the side of the sliding frame 6 facing the rear support frame 4, and several rubber support feet 10 are connected to the abutting beam 9.

[0033] When in use, the top of the work frame 2 is provided with a linear guide rail 11, and the bottom wall of the sliding frame 6 is slidably connected to the linear guide rail 11. The sliding frame 6 is controlled by the extension and retraction of the support cylinder 7.

[0034] The operator places the rear support workpiece to be welded on the work platform, starts the hydraulic pump station, drives the support cylinder to extend to the preset position, and the contact beam 9 contacts the workpiece, thereby completing the clamping and fixing of the workpiece. After confirming that the workpiece is positioned stably, the welding operation can be carried out.

[0035] Specifically, the design process involves meeting the dimensions of all rear support workpieces for the tunneling machine. Leveraging mature mechanical and hydraulic experience, all rear support models are exported and simulated within the tooling. The overall tooling structure is adjusted to improve its adaptability. Based on the tonnage of the rear supports and the overall tooling structure, the hydraulic cylinder mounting points, stroke, working pressure, and the entire hydraulic system are selected. Ultimately, this results in a welding tooling system that automatically supports and positions multiple workpieces using a single tooling.

[0036] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0037] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0038] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A welding support and positioning fixture for a tunneling machine, characterized in that: The work platform (1) is connected to a work frame (2) on one side of the top of the work platform (1), and a front support frame (3) is also connected to the top of the work platform (1) away from the work frame (2). The work frame (2) is also provided with a rear support frame (4) facing the front support frame (3), and the top of the work frame (2) is also connected to a support assembly that is horizontally adjustable towards the front support frame (3).

2. The tunneling machine welding support positioning fixture according to claim 1, characterized in that: The front support frame (3) is also provided with a foot (5) protruding outward on the side facing the rear support frame (4).

3. The tunneling machine welding support positioning fixture according to claim 1, characterized in that: The support assembly includes a sliding frame (6) slidably connected to the top of the work frame (2) and a support cylinder (7) for driving the horizontal displacement of the sliding frame (6). The top of the work platform (1) is also connected to the support cylinder (7) and is equipped with a hydraulic pump station (8).

4. The tunneling machine welding support positioning fixture according to claim 3, characterized in that: The sliding frame (6) is connected to an abutting beam (9) on the side facing the rear support frame (4), and several rubber support feet (10) are connected to the abutting beam (9).

5. The tunneling machine welding support positioning fixture according to claim 4, characterized in that: The top of the work frame (2) is provided with a linear guide rail (11), and the bottom wall of the sliding frame (6) is slidably connected to the linear guide rail (11).

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