A welding device for fire engineering

By designing a fire protection engineering welding device that uses a sleeve, movable column, and hydraulic rod to adjust the position of the clamping plate, the problem of existing devices being unable to adapt to pipes of different outer diameters was solved, achieving stable clamping and efficient welding.

CN224295123UActive Publication Date: 2026-05-29BEIJING JINGJIAN HENGAN CONSTRUCTION ENGINEERING CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
BEIJING JINGJIAN HENGAN CONSTRUCTION ENGINEERING CO LTD
Filing Date
2025-06-11
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing fire protection welding equipment lacks adjustment capabilities, cannot effectively clamp pipes of different outer diameters, and has poor applicability.

Method used

A welding device was designed, comprising a sleeve, a movable column, a clamping plate, a hydraulic rod, and a moving component. The position of the movable column and the clamping plate is adjusted by the extension and retraction of the hydraulic rod to accommodate the clamping requirements of pipes with different outer diameters, and the pipes are connected and welded by the moving component.

Benefits of technology

It enables stable clamping and adaptive welding of pipes with different outer diameters, improving the applicability of the device and welding efficiency.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of fire engineering, and disclose a kind of welding device for fire engineering, including base and moving seat, further include: the sleeve welded in the top of moving seat, sleeve surface three sides are all through the sleeve of being provided, the inner wall of sleeve is slidably connected with movable column, three places in the inside of sleeve are all provided with clamping plate, movable column and clamping plate are mutually bolted;The utility model is through the first hydraulic rod to make its output shaft elongation or shorten, to drive connecting sleeve, connecting rod and moving plate move in horizontal direction, to change the position of movable column inside chute further, let movable column drive clamping plate move towards the middle side of sleeve, pipe is implemented stable clamping, and by adjusting the distance of first hydraulic rod output shaft elongation or shorten, the distance of clamping plate and sleeve center can be adjusted, for adapting to the pipe of different outer diameter, improve the applicability of the device.
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Description

Technical Field

[0001] This utility model relates to the field of fire protection engineering technology, specifically a welding device for fire protection engineering. Background Technology

[0002] Fire protection engineering encompasses a range of measures and facilities implemented to prevent fires and their spread. The core objective of fire protection engineering is to protect life and property from fire hazards. Through comprehensive measures and facilities, it aims to prevent fires from occurring, control their spread in a timely manner, and effectively conduct firefighting and rescue operations. During the construction of fire protection systems, pipes need to be welded to ensure rapid and effective welding and repair work. This often involves joining two pipe sections together and welding them. Welding equipment is typically used to clamp and join the pipes, followed by a handheld welding torch. However, current welding equipment often lacks adjustable clamps, making it ineffective for clamping pipes of different outer diameters and thus limiting its applicability. Utility Model Content

[0003] The purpose of this utility model is to provide a welding device for fire protection engineering to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a welding device for fire protection engineering, comprising a base and a movable seat, and further comprising:

[0005] A sleeve welded to the top of the movable seat has sleeves extending through three sides of its surface. A movable column is slidably connected to the inner wall of the sleeve. Clamping plates are provided at three points inside the sleeve, and the movable column and clamping plates are bolted to each other.

[0006] Movable plates are disposed on three sides of the outer periphery of the sleeve. The surface of the movable plates is provided with inclined grooves. A connecting rod is bolted between adjacent movable plates. A connecting sleeve is fitted on the surface of the connecting rod.

[0007] A fixing sleeve is bolted to three sides of the outer periphery of the sleeve. A first hydraulic rod is provided on each of the three sides of the outer periphery of the sleeve, and the fixing sleeve is sleeved on the surface of the first hydraulic rod. The output shaft of the first hydraulic rod is bolted to the connecting sleeve. A moving component for driving the moving seat to perform horizontal displacement is provided on the top of the base.

[0008] Preferably, the movable component includes a support block, a second hydraulic rod, and a connecting plate. The support block is bolted to the top of the base, the output shaft of the second hydraulic rod is bolted to the connecting plate, the outer casing of the second hydraulic rod passes through the support block, and the connecting plate is bolted to the bottom of the movable seat.

[0009] Preferably, sliders are bolted to the four corners of the bottom of the movable seat, and slide rails are bolted to both sides of the top of the base, with the sliders slidably connected to the surfaces of the slide rails.

[0010] Preferably, the slide rail has a T-shaped cross-section, and the inner wall of the slider has the same shape as the cross-sectional shape of the slide rail.

[0011] Preferably, the inner wall of the inclined groove is oriented towards the center side of the sleeve.

[0012] Preferably, the movable column is U-shaped and slidably connected to the inner wall of the inclined groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This invention extends or retracts the output shaft of the first hydraulic rod, thereby moving the connecting sleeve, connecting rod, and moving plate horizontally. This changes the position of the movable column inside the inclined groove, causing the movable column to move the clamping plate toward the middle side of the sleeve, thus providing stable clamping for the pipe. Furthermore, by adjusting the extension or retraction distance of the first hydraulic rod's output shaft, the distance between the clamping plate and the center of the sleeve can be adjusted to accommodate pipes of different outer diameters, improving the applicability of the device. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a schematic diagram of the present invention in operation;

[0017] Figure 3 This is a schematic diagram of the sleeve and its surrounding structure in this utility model;

[0018] Figure 4 This is a partial structural diagram of the present invention;

[0019] Figure 5 This is a schematic diagram of the clamping plate and movable column in this utility model.

[0020] In the diagram: 1. Base; 2. Movable seat; 3. Sleeve; 4. Sleeve; 5. Movable column; 6. Movable plate; 7. Inclined groove; 8. Clamping plate; 9. Fixed sleeve; 10. First hydraulic rod; 11. Connecting sleeve; 12. Connecting rod; 13. Support block; 14. Second hydraulic rod; 15. Connecting plate; 16. Slide rail; 17. Slider. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-5 As shown, a welding device for fire protection engineering includes a base 1 and a movable base 2, and further includes:

[0023] The sleeve 3 is welded to the top of the movable seat 2. Sleeves 4 are provided through the three sides of the surface of the sleeve 3. Movable columns 5 are slidably connected to the inner wall of the sleeve 4. Clamping plates 8 are provided at three places inside the sleeve 3. The movable columns 5 and clamping plates 8 are bolted to each other. The clamping plates 8 in the three directions can move towards the middle side of the sleeve 3.

[0024] Movable plates 6 are arranged on the three sides of the outer periphery of the sleeve 3. The surface of the movable plates 6 is provided with inclined grooves 7, and the inner wall of the inclined grooves 7 is directed towards the center side of the sleeve 3. A connecting rod 12 is bolted between adjacent movable plates 6, and a connecting sleeve 11 is fitted on the surface of the connecting rod 12.

[0025] The fixing sleeve 9 is bolted to the three sides of the outer periphery of the sleeve 3. The three sides of the outer periphery of the sleeve 3 are provided with the first hydraulic rod 10, and the fixing sleeve 9 is sleeved on the surface of the first hydraulic rod 10 to fix the first hydraulic rod 10 to the outer periphery of the sleeve 3. The output shaft of the first hydraulic rod 10 is bolted to the connecting sleeve 11. The top of the base 1 is provided with a moving component that drives the moving seat 2 to perform horizontal displacement.

[0026] The moving assembly includes a support block 13, a second hydraulic rod 14, and a connecting plate 15. The support block 13 is bolted to the top of the base 1. The output shaft of the second hydraulic rod 14 is bolted to the connecting plate 15. The outer shell of the second hydraulic rod 14 passes through the support block 13. The support block 13 fixes the second hydraulic rod 14 above the base 1. The connecting plate 15 is bolted to the bottom of the moving seat 2. Slider 17 is bolted to each of the four corners of the bottom of the moving seat 2. Slide rails 16 are bolted to both sides of the top of the base 1. The slider 17 is slidably connected to the surface of the slide rail 16. When the moving seat 2 moves horizontally above the base 1, the moving seat 2 can drive the slider 17 to slide along the surface of the slide rail 16, thereby increasing the moving stability of the moving seat 2 and preventing its weight from bending the output shaft of the second hydraulic rod 14. The slide rail 16 has a T-shaped cross-section, and the inner wall of the slider 17 has the same shape as the cross-sectional shape of the slide rail 16.

[0027] During operation, two sections of fire-fighting pipe are placed inside the sleeves 3 on both sides. Then, the first hydraulic rod 10 is activated, and its output shaft extends to move the connecting sleeve 11 and the connecting rod 12, thereby moving the movable plates 6 in three positions. The movable column 5 has a U-shaped design and slides through the inner wall of the inclined groove 7. Due to the restriction of the sleeve 4, the movable column 5 cannot move horizontally. As the movable plate 6 moves the inclined groove 7, the movable column 5 changes its position on the inner wall of the inclined groove 7, thus moving closer to the middle side of the sleeve 3. This, in turn, moves the clamping plates 8 in multiple directions towards the center simultaneously, clamping and fixing the pipe. Furthermore, by adjusting the extension or retraction distance of the output shaft of the first hydraulic rod 10, the longer the output shaft extends, the longer the clamping plate 8 moves towards the center of the sleeve 3, which can fix pipes with slightly smaller outer diameters. The shorter the output shaft extends, the shorter the moving distance of the clamping plate 8 towards the center of the sleeve 3, which can fix pipes with slightly larger outer diameters, thus accommodating pipes with various outer diameters.

[0028] Then, the second hydraulic rods 14 on both sides are opened, their output shafts extend, and drive the moving seat 2 to move through the connecting plate 15. The moving seats 2 on both sides drive the upper sleeve 3 to move, so that the pipes clamped and fixed inside the sleeves 3 on both sides come together and close to each other. Then, a handheld welding gun (not shown in the figure, the welding gun and the matching welding equipment are existing technology and will not be described in detail here) is used to perform welding operations on the two connected pipes.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A welding device for fire protection engineering, comprising a base (1) and a movable base (2), characterized in that, Also includes: A sleeve (3) is welded to the top of the movable seat (2). A sleeve (4) is provided through three sides of the surface of the sleeve (3). A movable column (5) is slidably connected to the inner wall of the sleeve (4). A clamp (8) is provided at three places inside the sleeve (3). The movable column (5) and the clamp (8) are bolted to each other. Movable plates (6) are provided on the three sides of the outer periphery of the sleeve (3). The surface of the movable plates (6) is provided with inclined grooves (7). A connecting rod (12) is bolted between adjacent movable plates (6). A connecting sleeve (11) is provided on the surface of the connecting rod (12). A fixing sleeve (9) is bolted to the three sides of the outer periphery of the sleeve (3). A first hydraulic rod (10) is provided on each of the three sides of the outer periphery of the sleeve (3), and the fixing sleeve (9) is sleeved on the surface of the first hydraulic rod (10). The output shaft of the first hydraulic rod (10) is bolted to the connecting sleeve (11). A moving component for driving the moving seat (2) to perform horizontal displacement is provided on the top of the base (1).

2. The welding device for fire protection engineering according to claim 1, characterized in that: The moving assembly includes a support block (13), a second hydraulic rod (14), and a connecting plate (15). The support block (13) is bolted to the top of the base (1). The output shaft of the second hydraulic rod (14) is bolted to the connecting plate (15). The outer shell of the second hydraulic rod (14) passes through the support block (13). The connecting plate (15) is bolted to the bottom of the moving seat (2).

3. The welding device for fire protection engineering according to claim 1, characterized in that: The four corners of the bottom of the movable seat (2) are all bolted with sliders (17), and the two sides of the top of the base (1) are all bolted with slide rails (16), and the sliders (17) are slidably connected to the surfaces of the slide rails (16).

4. The welding device for fire protection engineering according to claim 3, characterized in that: The slide rail (16) has a T-shaped cross-section, and the inner wall of the slider (17) has the same shape as the cross-sectional shape of the slide rail (16).

5. A welding device for fire protection engineering according to claim 1, characterized in that: The inner wall of the inclined groove (7) is oriented towards the center side of the sleeve (3).

6. A welding device for fire protection engineering according to claim 1, characterized in that: The movable column (5) is U-shaped and slides through the inner wall of the inclined groove (7).