A two-liner reinforcement welding slag collecting box
By designing an automatically limiting secondary lining steel bar welding slag collection box, the problem of cumbersome backplate disassembly in the existing technology has been solved, achieving the effects of simplified operation and prevention of welding slag splash, thus improving construction efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING UNIV
- Filing Date
- 2025-04-29
- Publication Date
- 2026-07-21
AI Technical Summary
The existing secondary lining steel reinforcement welding slag collection box requires the back plate to be removed and disassembled after use, which is cumbersome and affects construction efficiency.
Design a secondary lining steel bar welding slag collection box including a box body, a back plate, and a sliding component. Through the cooperation of a limit rod, a lever, and a spring, the back plate can be automatically limited and fixed, simplifying the operation process.
It simplifies the disassembly process of the back panel, improves construction efficiency, prevents welding slag from splashing, protects the waterproof membrane and workers, and reduces the number of operation steps.
Smart Images

Figure CN224526301U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding slag collection technology, and in particular to a welding slag collection box for secondary lining steel bars. Background Technology
[0002] Secondary lining reinforcement bars are typically arranged in a cross pattern at the front end of the secondary lining waterproofing membrane. Currently, by constructing a cuboid-shaped secondary lining reinforcement slag collection box, the welded joints of the secondary lining reinforcement bars are isolated from the already laid finished waterproofing membrane. Welding operations are carried out within the partially enclosed slag collection box, which improves the protection of the finished secondary lining waterproofing membrane. This prevents high-temperature welding slag from burning the waterproofing membrane and workers during welding at the joints of the tunnel secondary lining reinforcement bars, avoids quality problems caused by burning the secondary lining waterproofing membrane, and prevents increased costs due to secondary repairs. This also improves the efficiency of tunnel secondary lining construction.
[0003] However, the current collection box passes through the secondary lining steel bars. After inserting the back plate into the collection box, the welding slag is prevented from splashing onto the secondary lining waterproof board. After the collection box is completed, the staff still need to remove and disassemble the back plate before taking out the collection box. The operation is too cumbersome. Utility Model Content
[0004] The purpose of this utility model is to provide a secondary lining steel bar welding slag collection box, which solves the problem that in the current technology, after the collection box passes through the secondary lining steel bar, the back plate is inserted into the collection box to prevent welding slag from splashing onto the secondary lining waterproof board. After the collection box is completed, the staff still need to remove and disassemble the back plate and then take out the collection box, which is too cumbersome.
[0005] To achieve the above objectives, this utility model provides a secondary lining steel reinforcement welding slag collection box, including a box body, a back plate, and a sliding assembly. The sliding assembly includes a guide rail, a lever, a shell, a limiting rod, a spring, and a ring. Both the box body and the guide rail have sliding grooves. The front end of the box body has a first opening, and the rear end of the box body has a second opening. The guide rail is fixedly connected to the inner bottom wall of the box body. One end of the lever passes through the two sliding grooves and is fixedly connected to the back plate. The upper end of the back plate is slidably adapted to the sliding grooves. The shell is fixedly connected to the upper end of the box body. One end of the limiting rod passes through the shell. The ring is fixedly sleeved on the outside of the limiting rod and located inside the shell. The two ends of the spring are fixedly connected to the inner wall of the shell and the ring, respectively.
[0006] The upper part of the box also has two ventilation openings.
[0007] The limiting rod has a tangential surface.
[0008] The secondary lining steel bar welding slag collection box also includes a handle, which is fixedly connected to the box body and located at the upper end of the box body.
[0009] The secondary lining steel bar welding slag collection box also includes a handle, and the front end of the back plate has a texture; the handle is fixedly connected to the limiting rod and is located at the front end of the limiting rod.
[0010] This utility model discloses a secondary lining rebar welding slag collection box. First, the secondary lining rebar is passed through the second opening, allowing the box body to be installed on the rebar. Then, the limiting rod is pulled, and the lever is pushed, causing the back plate to slide along the guide rail, thus closing the second opening. The limiting rod is then released, and under the elastic force of the spring, it returns to its original position and abuts against the lever, thus limiting the back plate. The front end of the back plate, in conjunction with the second opening, holds and holds the secondary lining rebar, thus fixing the box body to the rebar. Workers can then weld the secondary lining rebar, and the welding slag produced during welding is collected by the box, preventing slag from splashing onto the workers and the secondary lining waterproofing membrane behind them. Therefore, this device does not require disassembly of the back plate; simply moving it left and right is sufficient to block slag splashing. The operation is simple and quick, preventing welding slag from burning the secondary lining waterproofing membrane and workers. Attached Figure Description
[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.
[0012] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of this utility model.
[0013] Figure 2 This is a top view of the overall first embodiment of the present invention.
[0014] Figure 3 This is the utility model Figure 2 A sectional view along line AA.
[0015] Figure 4 This is the utility model Figure 3 Enlarged view of the local structure at point B.
[0016] Figure 5 This is a top view of the second embodiment of the present invention.
[0017] Figure 6 This is the utility model Figure 5 CC-line sectional view.
[0018] 101-Box body, 102-Back panel, 103-Handle, 104-Guide rail, 105-Pulley, 106-Outer shell, 107-Limit rod, 108-Spring, 109-Ring, 110-Slide groove, 111-First opening, 112-Second opening, 113-Ventilation vent, 114-Cut surface, 201-Handle, 202-Texture. Detailed Implementation
[0019] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.
[0020] First embodiment:
[0021] Please see Figures 1 to 4 ,in, Figure 1 This is a schematic diagram of the overall structure of the first embodiment of this utility model. Figure 2 This is a top view of the overall first embodiment of the present invention. Figure 3 This is the utility model Figure 2 AA-line sectional view, Figure 4 This is the utility model Figure 3 Enlarged view of the local structure at point B.
[0022] This utility model provides a secondary lining steel bar welding slag collection box, including a box body 101, a back plate 102, a sliding assembly and a handle 103. The sliding assembly includes a guide rail 104, a lever 105, a shell 106, a limiting rod 107, a spring 108 and a ring 109. The box body 101 and the guide rail 104 both have sliding grooves 110. The front end of the box body 101 has a first opening 111, the rear end of the box body 101 has a second opening 112, and the upper end of the box body 101 also has two ventilation holes 113. The limiting rod 107 has a cut surface 114.
[0023] In this specific embodiment, the secondary lining steel bars are first passed through the second opening 112, allowing the box 101 to be installed on the secondary lining steel bars. Then, the limiting rod 107 is pulled, and the lever 105 is pushed, causing the back plate 102 to slide along the guide rail 104, thereby closing the second opening 112. Then, the limiting rod 107 is released, and under the elastic force of the spring 108, the limiting rod 107 is pushed back to its original position and abuts against the lever 105, thereby limiting the back plate 102. Furthermore, the cooperation between the front end of the back plate 102 and the second opening 112 holds and clamps the secondary lining steel bars, thus fixing the box 101 to the secondary lining steel bars. The workers can then weld the secondary lining steel bars. The welding slag produced during welding is collected by the box 101, preventing slag from splashing onto the workers. With the secondary waterproof lining at the rear, the device does not require disassembly of the back plate 102. Simply moving it left and right can block welding slag from splashing, making the operation simple and quick. This avoids welding slag burning the secondary waterproof lining and the workers. When the workers are welding, the two ventilation openings 113 can accelerate the exhaust of smoke, preventing the smoke from lingering inside the housing 101 and obstructing the workers' vision. When the lever 105 is pushed, there is no need to pull the limiting rod 107 first. The lever 105 simply presses the cut surface 114, thereby pushing the limiting rod 107 to move. Then, under the elastic force of the spring 108, the limiting rod 107 returns to its original position and abuts against the lever 105. This reduces the number of steps for the workers and makes the operation easier. The handle 103 makes it easy for workers to carry and move the device.
[0024] The housing 101 and the guide rail 104 each have a sliding groove 110. The front end of the housing 101 has a first opening 111, and the rear end of the housing 101 has a second opening 112. The guide rail 104 is fixedly connected to the inner bottom wall of the housing 101. One end of the lever 105 passes through the two sliding grooves 110 and is fixedly connected to the back plate 102. The upper end of the back plate 102 is slidably adapted to the sliding grooves 110. The outer shell 106 is fixedly connected to the upper end of the housing 101. One end of the limiting rod 107 passes through the outer shell 106. The ring 109 is fixedly sleeved on the outside of the limiting rod 107 and located inside the outer shell 106. The two ends of the spring 108 are fixedly connected to the inner wall of the outer shell 106 and the ring 109, respectively. First, the secondary lining steel bars are passed through the second opening 112, allowing the box body 101 to be installed on the secondary lining steel bars. Then, the limiting rod 107 is pulled, and the lever 105 is pushed, thereby causing the back plate 102 to slide along the guide rail 104, thus closing the second opening 112. Then, the limiting rod 107 is released, and under the elastic force of the spring 108, the limiting rod 107 is pushed back to its original position and abuts against the lever 105, thereby limiting the back plate 102. The front end of the device cooperates with the second opening 112 to hold and hold the secondary lining steel bars, thereby fixing the box body 101 to the secondary lining steel bars. Then, the workers can weld the secondary lining steel bars. The welding slag produced during welding will be collected by the box body 101 to prevent the welding slag from splashing onto the workers and the secondary lining waterproof board behind them. Therefore, the device does not require the back plate 102 to be disassembled. It can be moved left and right to block the welding slag from splashing. The operation is simple and quick, and avoids the welding slag burning the secondary lining waterproof board and the workers.
[0025] Secondly, the upper end of the housing 101 also has two ventilation openings 113. When workers are welding, the two ventilation openings 113 can speed up the exhaust of fumes and prevent the fumes from remaining inside the housing 101 and thus obstructing the workers' view.
[0026] Meanwhile, the limiting rod 107 has a cut surface 114. When the lever 105 is pushed, it is not necessary to pull the limiting rod 107 first. The lever 105 simply presses the cut surface 114, thereby pushing the limiting rod 107 to move. Then, under the elastic force of the spring 108, the limiting rod 107 returns to its original position and abuts against the lever 105. This reduces the number of steps required for the operator and makes the process easier.
[0027] In addition, the handle 103 is fixedly connected to the housing 101 and is located at the upper end of the housing 101. The handle 103 facilitates the carrying and retrieval of the device by staff.
[0028] When using the secondary lining steel reinforcement welding slag collection box of this embodiment, first, the secondary lining steel reinforcement is passed through the second opening 112, so that the box body 101 is installed on the secondary lining steel reinforcement. Then, the limiting rod 107 is pulled, and then the lever 105 is pushed, thereby causing the back plate 102 to slide along the guide rail 104, thereby closing the second opening 112. Then, the limiting rod 107 is released, and under the elastic force of the spring 108, the limiting rod 107 is pushed back to its original position and abuts against the lever 105, thereby limiting the back plate 102. Furthermore, through the cooperation between the front end of the back plate 102 and the second opening 112, the secondary lining steel reinforcement is held and locked, thereby fixing the box body 101. The box body 101 is fixed on the secondary lining steel reinforcement, and then the worker can weld the secondary lining steel reinforcement. The welding slag generated during welding will be collected by the box body 101 to prevent the welding slag from splashing onto the work area. The device is mounted on the secondary waterproof lining on the worker's body and behind, thus eliminating the need to disassemble the back plate 102. Simply moving it left and right can block welding slag from splashing, making operation simple and quick, and preventing welding slag from burning the secondary waterproof lining and the worker. When the worker is welding, the two ventilation openings 113 can accelerate the discharge of smoke, preventing the smoke from accumulating inside the housing 101 and obstructing the worker's vision. When the lever 105 is pushed, there is no need to pull the limiting rod 107 first. The lever 105 simply presses the cut surface 114, thereby pushing the limiting rod 107 to move. Then, under the elastic force of the spring 108, the limiting rod 107 returns to its original position and abuts against the lever 105. This reduces the number of steps for the worker and makes the operation easier. The handle 103 makes it easy for the worker to carry and move the device.
[0029] Second embodiment:
[0030] Based on the first embodiment, please refer to Figure 5 and Figure 6 ,in, Figure 5 This is a top view of the entire second embodiment of the present invention. Figure 6 This is the utility model Figure 5 CC-line sectional view.
[0031] This utility model provides a secondary lining steel bar welding slag collection box, which also includes a handle 201, and the front end of the back plate 102 has a texture 202.
[0032] In this specific embodiment, the handle 201 facilitates the movement of the limiting rod 107 by the operator, and the texture 202 increases the friction between the back plate 102 and the secondary lining steel bars, thereby making the device more securely fixed.
[0033] The back plate 102 has a textured surface 202 at its front end; the handle 201 is fixedly connected to the limiting rod 107 and is located at the front end of the limiting rod 107. The handle 201 facilitates movement of the limiting rod 107 by the operator, and the textured surface 202 increases the friction between the back plate 102 and the secondary lining reinforcement, thus ensuring a more stable fixation of the device.
[0034] When using the secondary lining steel bar welding slag collection box of this embodiment, the handle 201 facilitates the worker to pull the limiting rod 107 to move it. The texture 202 increases the friction between the back plate 102 and the secondary lining steel bar, thereby making the device more securely fixed.
[0035] The above-disclosed embodiments are merely one or more preferred embodiments of this application and should not be construed as limiting the scope of this application. Those skilled in the art can understand that all or part of the processes for implementing the above embodiments and equivalent changes made in accordance with the claims of this application still fall within the scope of this application.
Claims
1. A collection box for welding slag from secondary lining steel bars, characterized in that, Includes the enclosure, back panel, and sliding components; The sliding assembly includes a guide rail, a lever, a housing, a limiting rod, a spring, and a ring. Both the housing and the guide rail have sliding grooves. The front end of the housing has a first opening, and the rear end of the housing has a second opening. The guide rail is fixedly connected to the inner bottom wall of the housing. One end of the lever passes through the two sliding grooves and is fixedly connected to the back plate. The upper end of the back plate is slidably adapted to the sliding grooves. The housing is fixedly connected to the upper end of the housing. One end of the limiting rod passes through the housing. The ring is fixedly sleeved on the outside of the limiting rod and located inside the housing. The two ends of the spring are fixedly connected to the inner wall of the housing and the ring, respectively.
2. The secondary lining steel reinforcement weld slag collection box as described in claim 1, characterized in that, The upper part of the box also has two ventilation openings.
3. The secondary lining steel reinforcement weld slag collection box as described in claim 2, characterized in that, The limiting rod has a cross-section.
4. The secondary lining steel reinforcement weld slag collection box as described in claim 3, characterized in that, The secondary lining steel bar welding slag collection box also includes a handle, which is fixedly connected to the box body and located at the upper end of the box body.
5. The secondary lining steel reinforcement weld slag collection box as described in claim 4, characterized in that, The secondary lining steel bar welding slag collection box also includes a handle, and the front end of the back plate has a texture; the handle is fixedly connected to the limiting rod and is located at the front end of the limiting rod.