A pressure maintaining test gantry structure

Abstract

The application relates to the technical field of pressure-maintaining test equipment, in particular to a pressure-maintaining test gantry structure which comprises a rectangular frame and a module structure, the lower side of the rectangular frame is provided with a rack extending along the length direction of the rectangular frame, the module structure comprises a sliding seat, a linear module vertically arranged on the sliding seat and a servo motor fixed on the sliding seat, the sliding seat is slidably connected with the lower side of the rectangular frame, the top of the linear module is provided with a first connecting seat, the first connecting seat is slidably connected with the upper side of the rectangular frame, a gear is arranged on the driving shaft of the servo motor, the gear is engaged with the rack, the gear is rolled along the length direction of the rack by rotating the gear driven by the servo motor, a supporting plate is connected with the mover of the linear module, and the linear module is used for driving the supporting plate to ascend and descend, so that the application realizes efficient and accurate position adjustment of a pressure-maintaining workpiece up and down and left and right.

Description

Technical Field

[0001] This application relates to the technical field of pressure holding test equipment, and more specifically, to a pressure holding test gantry structure. Background Technology

[0002] Pressure holding tests are a crucial step in the manufacturing, installation, and periodic inspection of pressure-bearing equipment such as pressure vessels, piping systems, valves, and heat exchangers. The purpose is to verify the structural strength, sealing performance, and leak-free nature of the workpiece by applying a test medium at a pressure higher than its operating pressure and maintaining it for a certain period, ensuring the equipment's safety and reliability in subsequent operation. For pressure holding tests, especially for large, heavy, or long workpieces such as long pipes and large containers, specialized support, fixing, and protective equipment is required. Pressure holding test gantry cranes are key tooling fixtures that meet this need.

[0003] Currently, common pressure holding test gantry cranes primarily focus on providing a static support frame and protective functions. However, they suffer from significant technical limitations and operational difficulties in fixing and adjusting the position of the workpiece under test: Traditional gantry cranes typically employ manual methods to adjust the horizontal and vertical position of the workpiece within the gantry to meet the requirements of different workpiece sizes or specific test points. Methods such as using jacks, shims, and bolt tightening are inefficient, labor-intensive, and lack guaranteed positioning accuracy. This is especially problematic for precisely positioned test points, such as welds, flange connections, or fine-tuning large workpieces; the operation is cumbersome and time-consuming, and the workpiece position adjustment relies entirely on manual operation, making efficient integration with modern automated testing processes difficult. Utility Model Content

[0004] To address the problems of low efficiency, high labor intensity, difficulty in ensuring positioning accuracy, and difficulty in efficient integration with modern automated testing processes caused by the manual adjustment of the horizontal and vertical positions of workpieces within the traditional pressure holding test gantry, this application provides a pressure holding test gantry structure.

[0005] A pressure-holding test gantry structure includes a rectangular frame and a module structure. A rack extending along the length of the rectangular frame is provided on its lower side. The module structure includes a sliding seat, a linear module erected on the sliding seat, and a servo motor fixed to the sliding seat. The sliding seat is slidably connected to the lower side of the rectangular frame to achieve reciprocating sliding along the length of the lower side of the rectangular frame. A first connecting seat is provided on the top of the linear module, and the first connecting seat is slidably connected to the upper side of the rectangular frame to achieve reciprocating sliding along the length of the upper side of the rectangular frame. A gear is provided on the drive shaft of the servo motor, and the gear meshes with the rack. The servo motor drives the gear to rotate, causing the gear to roll along the length of the rack. A support plate is connected to the moving part of the linear module, and the linear module is used to drive the support plate to rise and fall.

[0006] Preferably, the lower side of the rectangular frame is provided with a first slide rail extending along its length direction, the upper side of the rectangular frame is provided with a second slide rail extending along its length direction, the sliding seat is provided with a first slider, the first slider is slidably connected to the first slide rail, and the first connecting seat is provided with a second slider, the second slider is slidably connected to the second slide rail.

[0007] Preferably, a column is erected on the sliding seat, a second connecting seat is provided at the top of the column, a third slider is provided on the second connecting seat, the third slider is slidably connected to the second slide rail, the column is arranged parallel to the linear module, and the tray is slidably connected to the column to achieve reciprocating sliding along the length direction of the column.

[0008] Preferably, the column has grooves recessed on both sides, the grooves extending along the length of the column, and a mounting plate is provided on the side of the support plate away from the linear module. The mounting plate is rotatably provided with two sets of rollers, which are located in the two grooves respectively, and the rollers slide in contact with the grooves.

[0009] Preferably, there are multiple module structures, and the multiple module structures are arranged along the length direction of the rectangular frame.

[0010] Preferably, a triangular rib is provided on the bottom back side of the linear module, and the triangular rib is fixedly connected to the sliding seat (21).

[0011] Preferably, the upper side of the rectangular frame is provided with limit plates at both ends, and anti-collision screws are provided on the opposite surfaces of the two limit plates.

[0012] The beneficial technical effects of this application are as follows: The workpiece is supported by a pallet, and the vertical position of the workpiece is adjusted by driving the pallet to rise and fall via a linear module, achieving high adjustment accuracy. A servo motor drives the gear to rotate, causing the gear to roll along the length of the rack, which in turn moves the sliding seat along the lower side of the rectangular frame, thereby moving the linear module and the workpiece along the lower side of the rectangular frame to adjust the workpiece's left and right position. The cooperation between the servo motor and the linear module enables automatic vertical and horizontal adjustment of the workpiece, eliminating the inefficient and laborious manual adjustment methods relying on jacks, pads, and bolt tightening. This facilitates the full automation of the pressure holding test process. The servo motor enables rapid, continuous, and stepless horizontal reciprocating movement of the sliding seat along the lower side of the frame; the linear module enables rapid and stable lifting and lowering of the pallet. This significantly shortens the workpiece positioning time, improves the efficiency of workpiece adjustment, and the servo motor and linear module have high-precision position control capabilities, enabling millimeter-level or even higher precision positioning of the sliding seat's horizontal position and the pallet's height. Employees can adjust the position by inputting commands on the control panel that controls the servo motor and linear module externally, which greatly reduces the burden of physical labor. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of a pressure holding test gantry structure according to this embodiment.

[0014] Figure 2 This is a schematic diagram of the module structure in this embodiment.

[0015] Figure 3 This is a schematic diagram of the connection structure between the lower side of the rectangular frame and the rack and the first slide rail in this embodiment.

[0016] Reference numerals: 1. Rectangular frame; 11. Rack; 12. First slide rail; 13. Second slide rail; 14. Limiting plate; 141. Anti-collision screw; 2. Module structure; 21. Sliding seat; 211. First slider; 22. Linear module; 221. First connecting seat; 222. Second slider; 23. Servo motor; 231. Gear; 24. Support plate; 241. Mounting plate; 242. Roller assembly; 25. Column; 251. Second connecting seat; 252. Third slider; 253. Slide groove; 26. Triangular rib plate. Detailed Implementation

[0017] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] Reference Figure 1-3 A pressure-holding test gantry structure includes a rectangular frame 1 and a module structure 2. The rectangular frame 1 is side-mounted, and its lower side is provided with a rack 11 extending along its length and a first slide rail 12. The rack 11 and the first slide rail 12 are parallel to each other. The upper side of the rectangular frame 1 is provided with a second slide rail 13 extending along its length. The module structure 2 includes a sliding seat 21, a linear module 22, and a servo motor 23. The sliding seat 21 is vertically mounted on its top. The servo motor 23 is mounted on its top, and its drive shaft passes through the bottom of the sliding seat 21. A first slider 211 is provided at the bottom of the sliding seat 21. The first slider 211 is slidably connected to the first slide rail 12 to enable the sliding seat 21 to slide back and forth along the length of the first slide rail 12. A first connecting seat 221 is provided on the top of the linear module 22, and a second slider 22 is provided on the first connecting seat 221. 2. The second slider 222 is slidably connected to the second slide rail 13, making the sliding of the module structure 2 more stable. A gear 231 is provided on the drive shaft of the servo motor 23. The gear 231 meshes with the rack 11. The servo motor 23 drives the gear 231 to rotate in both directions, so that the gear 231 rolls back and forth along the length direction of the rack 11. Since the servo motor 23 and the sliding seat 21 are rigidly connected, the gear 231 rolls back and forth along the length direction of the rack 11, so that the sliding seat 21 slides back and forth along the length direction of the first slide rail 12. The sliding of the sliding seat 21 drives the linear module 22 to slide. A support plate 24 is connected to the moving part of the linear module 22. The support plate 24 is used to connect the workpiece. The vertical position of the workpiece is adjusted by driving the support plate 24 to rise and fall by the linear module 22. The adjustment accuracy is high. The horizontal position of the workpiece is adjusted by the sliding seat 21 sliding back and forth along the length direction of the first slide rail 12.

[0019] Reference Figure 1 and Figure 2 To make the lifting and lowering of the pallet 24 more stable and the overall movement of the module structure 2 more stable, a column 25 is vertically installed on the sliding seat 21. A second connecting seat 251 is installed at the top of the column 25, and a third slider 252 is installed on the second connecting seat 251. The third slider 252 is slidably connected to the second slide rail 13, so that the module structure 2 receives further sliding support and its movement is more stable. Slide grooves 253 are recessed on both sides of the column 25. The slide grooves 253 extend along the length of the column 25. A mounting plate 241 is installed on the side of the pallet 24 away from the straight module 22. Two sets of roller groups 242 are rotatably installed on the mounting plate 241. The two roller groups 242 are respectively embedded in the two slide grooves 253 and roll in contact with the slide grooves 253, so that the pallet 24 receives additional guiding support along the column 25 when it is lifted and lowered, avoiding swaying. Each roller group 242 includes multiple rollers arranged vertically.

[0020] Reference Figure 1Furthermore, there are multiple module structures 2, which are arranged along the length of the rectangular frame 1. The multiple module structures 2 can connect multiple workpieces to enable multiple workpieces to undergo pressure holding tests simultaneously, which is beneficial for the mass production of workpieces.

[0021] Reference Figure 2 Furthermore, a triangular rib plate 26 is provided on the bottom back side of the linear module 22. The triangular rib plate 26 is fixedly connected to the top of the slide block, making the linear module 22 more stable to install.

[0022] Reference Figure 3 Furthermore, limit plates 14 are provided at both ends of the upper side of the rectangular frame 1, and anti-collision screws 141 are provided on the opposite surfaces of the two limit plates 14 to set the physical travel limit of the horizontal movement of the sliding seat 21, buffer collisions, and reduce damage to precision parts.

[0023] The implementation principle of the pressure-holding test gantry structure of this application is as follows: The operator starts the servo motor 23 through the external control panel. The meshing transmission of the gear 231 and the rack 11 drives the sliding seat 21 to move precisely horizontally along the lower side of the frame, simultaneously driving the linear module 22, the column 25, and the workpiece on the pallet 24 to be positioned laterally. At the same time, the linear module 22 drives the pallet 24 to rise and fall vertically. The roller group 242 rolls in the slide groove 253 of the column 25 to achieve stable guidance and complete the workpiece height adjustment. The dual servo system works in coordination with horizontal movement and vertical lifting, replacing the traditional jacks or pads for manual adjustment, and achieving millimeter-level precise positioning of the workpiece in space. The multi-module configuration can adjust the support points in sections for workpieces such as long pipes, while the anti-collision screws 141 and stiffening plates respectively ensure operational safety and structural rigidity, ultimately achieving the core goal of efficient automated testing.

[0024] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure-holding test gantry structure, characterized in that: The system includes a rectangular frame (1) and a module structure (2). The rectangular frame (1) has a rack (11) extending along its length on its lower side. The module structure (2) includes a sliding base (21), a linear module (22) erected on the sliding base (21), and a servo motor (23) fixed to the sliding base (21). The sliding base (21) is slidably connected to the lower side of the rectangular frame (1) to achieve reciprocating sliding along the length of the lower side of the rectangular frame (1). The linear module (22) has a first connecting seat (221) at its top. The connecting seat (221) is slidably connected to the upper side of the rectangular frame (1) to achieve reciprocating sliding along the length direction of the upper side of the rectangular frame (1). A gear (231) is provided on the drive shaft of the servo motor (23). The gear (231) meshes with the rack (11). The servo motor (23) drives the gear (231) to rotate, causing the gear (231) to roll along the length direction of the rack (11). A support plate (24) is connected to the mover of the linear module (22). The linear module (22) is used to drive the support plate (24) to rise and fall.

2. The pressure-holding test gantry structure according to claim 1, characterized in that: The lower side of the rectangular frame (1) is provided with a first slide rail (12) extending along its length direction, the upper side of the rectangular frame (1) is provided with a second slide rail (13) extending along its length direction, the sliding seat (21) is provided with a first slider (211), the first slider (211) is slidably connected to the first slide rail (12), the first connecting seat (221) is provided with a second slider (222)(211), the second slider (222)(211) is slidably connected to the second slide rail (13).

3. The pressure-holding test gantry structure according to claim 2, characterized in that: A column (25) is erected on the sliding seat (21). A second connecting seat (251) is provided at the top of the column (25). A third slider (252) (211) is provided on the second connecting seat (251). The third slider (252) (211) is slidably connected to the second slide rail (13). The column (25) is parallel to the linear module (22). The support plate (24) is slidably connected to the column (25) to achieve reciprocating sliding along the length direction of the column (25).

4. The pressure-holding test gantry structure according to claim 3, characterized in that: The column (25) has grooves (253) recessed on both sides. The grooves (253) extend along the length of the column (25). The support plate (24) has a mounting plate (241) on the side away from the linear module (22). The mounting plate (241) is rotatably equipped with two sets of rollers (242). The two sets of rollers (242) are located in the two grooves (253) respectively, and the rollers (242) slide in contact with the grooves (253).

5. The pressure-holding test gantry structure according to claim 1, characterized in that: The number of the module structures (2) is multiple, and the multiple module structures (2) are arranged along the length direction of the rectangular frame (1).

6. The pressure-holding test gantry structure according to claim 1, characterized in that: The bottom back side of the linear module (22) is provided with a triangular rib plate (26), which is fixedly connected to the sliding seat (21).

7. The pressure-holding test gantry structure according to claim 1, characterized in that: The upper side of the rectangular frame (1) is provided with limit plates (14) at both ends, and anti-collision screws (141) are provided on the opposite surfaces of the two limit plates (14).

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