Floor surface rapid welding gun for bullet train
By using a high-speed train floor welding gun with a hot air gun and conversion module design, rapid welding of floor gaps was achieved, solving the problem of long drying time for sealant and improving repair efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY CHENGDU BUREAU GRP CO LTD GUIYANG DEPOT
- Filing Date
- 2025-07-25
- Publication Date
- 2026-07-21
AI Technical Summary
After the repair of the floor of the high-speed train carriage, the gaps need to be sealed with traditional sealant, which results in a long time for the sealant to dry naturally, affecting operation.
Design a rapid welding gun for the floor of a high-speed train, including a hot air gun, a conversion module and a rubber strip welding assembly. The hot air gun delivers concentrated hot air, and together with a limit seat and a discharge port, it enables rapid welding of gaps.
It shortens the drying time of floor repair adhesive from 12 to 48 hours to less than one minute, improving work efficiency and safety and reducing operational impact.
Smart Images
Figure CN224528036U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding torch technology, and in particular to a high-speed welding torch for the floor surface of high-speed trains. Background Technology
[0002] Due to malfunctions such as bubbling and cracks in the floor of the high-speed train carriages, the floor needs to be repaired or replaced. After the replacement floor is installed, there will be gaps at the joints. These gaps need to be sealed with traditional sealant. After the sealant is applied, it can only be left to dry naturally, which takes a long time. During this period, the floor cannot be used, which will also affect the operation of the high-speed train.
[0003] Therefore, there is an urgent need to design a high-speed welding torch for the floor of high-speed trains to solve this problem. Utility Model Content
[0004] The purpose of this invention is to solve the problem in the prior art that after applying sealant, one can only wait for the sealant to dry naturally, and proposes a rapid welding gun for the floor surface of high-speed trains.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-speed welding torch for the floor of a high-speed train includes a hot air gun and a conversion module detachably connected to the outlet of the hot air gun. The conversion module has a handheld device on its side wall and its top is connected to the outlet of the hot air gun via an air outlet channel. A rubber strip welding assembly is detachably connected to the conversion module. The rubber strip welding assembly has an integrally formed expansion frame at its front end, and the expansion frame has a glue inlet that is connected to the expansion frame.
[0006] To facilitate centralized airflow from the hot air gun, the conversion module preferably includes a conversion head with a connecting pipe at the top center. The hot air gun has an air outlet pipe, and the conversion head is fitted onto the air outlet pipe.
[0007] To facilitate movement of the adapter, the handheld component further includes a connecting rod, and the adapter is fixedly connected to the end of the connecting rod.
[0008] To facilitate hot air conversion welding of the adhesive strip, preferably, the adhesive strip welding assembly includes a welding component, a welding cavity is provided in the middle of the welding component, the adhesive inlet is connected to the welding cavity, an outlet is provided at the bottom of the expansion frame, and a limiting seat is provided at the rear end of the welding component, the outlet being adapted to the limiting seat.
[0009] To facilitate the delivery of hot air, an air inlet pipe is fixedly connected to the welded component, and the air inlet pipe is sleeved on the connecting pipe.
[0010] To facilitate safe handling of the heat gun, preferably, the handheld part of the heat gun is equipped with a heat-resistant bandage.
[0011] Compared with the prior art, this utility model provides a rapid welding torch for the floor surface of high-speed trains, which has the following advantages: 1. The high-speed train uses a floor surface rapid welding gun. It works by using the discharge port on the welded part in conjunction with the limiting seat, so that the limiting seat is attached to the gap. Then the discharge port is raised a certain distance and slides at a uniform speed along the gap of the floor surface. After welding is completed, it is flattened with a pusher knife, thereby achieving the purpose of rapid welding. 2. The high-speed welding torch for the train floor has a protective pad on the connecting rod, which increases the comfort of the operator when holding the adapter and prevents the operator's hands from being burned during long-term use, thus improving the safety of use.
[0012] The parts of this device not covered are the same as or can be implemented using existing technologies. This utility model can achieve rapid dry adhesive repair, effectively avoiding the problem of affecting the use of EMU equipment and the operation of EMU due to excessively long waiting time for dry adhesive. Attached Figure Description
[0013] Figure 1 This is a three-dimensional structural diagram of a high-speed train floor rapid welding gun proposed in this utility model; Figure 2 This is a structural schematic diagram of a high-speed train floor surface welding component proposed in this utility model; Figure 3 This is a schematic diagram of the structure of a fast welding gun connecting rod for the floor surface of a high-speed train proposed in this utility model; Figure 4 This is a schematic diagram of the structure of a high-speed train floor welding torch hot air gun proposed in this utility model.
[0014] In the diagram: 1. Hot air gun; 101. Air outlet pipe; 2. Connecting rod; 3. Converter head; 4. Connecting pipe; 5. Welded parts; 501. Discharge port; 502. Limiting seat; 6. Air inlet pipe; 7. Glue inlet. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0016] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0017] Due to malfunctions such as bubbling and cracks in the floor of the high-speed train carriage, the floor needs to be repaired or replaced. After the replacement floor is replaced, there will be gaps at the joints. These gaps need to be sealed with traditional sealant. After the sealant is applied, it can only be left to dry naturally, which takes a long time. During this period, the floor cannot be used, which will also affect the operation of the high-speed train. Therefore, a special adhesive strip can be placed on the gap, and then a hot air gun can be used to melt and weld the special adhesive strip to achieve the purpose of quickly sealing the floor gaps.
[0018] Reference Figures 1-4 A high-speed welding torch for train floor surfaces is provided. A converter head 3 can be detachably connected to the air outlet of the hot air torch 1. The converter head 3 concentrates the airflow from the hot air torch 1 onto its outlet pipe 101. The design of the converter head 3 makes the hot air more concentrated, improving the thermal efficiency of the hot air torch 1. The shape and size of the converter head 3 can be adjusted according to actual needs to accommodate different sizes of hot air torches 1, facilitating flexible replacement of different specifications of hot air torches 1. A handheld device is provided on the side wall of the converter head 3 to maintain the distance between the converter head 3 and the operator. The handheld device includes a connecting rod 2, with the converter head 3 fixedly connected to the end of the connecting rod 2. A protective pad is also fitted on the connecting rod 2. The protective pad is made of soft and high-temperature resistant materials such as rubber or silicone. The protective pad increases the comfort of the operator when holding the converter head 3 and prevents burns to the operator's hands during prolonged use, improving safety.
[0019] A connecting pipe 4 is provided at the top center of the converter head 3. Through the connecting pipe 4, the hot air from the hot air gun 1 can be concentrated and delivered into the inside of the adhesive strip welding assembly. An expansion frame is integrally formed at the front end of the adhesive strip welding assembly. An adhesive inlet 7 is provided on the expansion frame and is connected to the expansion frame. Guide plates are also provided on both sides of the expansion frame. The guide plates can guide the adhesive strip to fill along the direction of the floor gap. In addition, the inner wall of the connecting pipe 4 is very smooth, which can reduce the resistance of the hot air during the delivery process and ensure the stable delivery of the hot air.
[0020] The aforementioned adhesive strip welding assembly includes a welding component 5, with a welding cavity in the middle of the welding component 5. An adhesive inlet 7 communicates with the welding cavity. An outlet 501 is located at the bottom of the expansion frame. A limiting seat 502 is provided at the rear end of the welding component 5. The outlet 501 is adapted to the limiting seat 502. During use, the limiting seat 502 abuts against the gap between the limiting seat and the floor, while the outlet 501 is raised. A hot air gun 1, in conjunction with the welding cavity, heats the adhesive strip entering the adhesive inlet 7, softening it and adhering it to the floor gap, completing the sealing welding operation. The hot air gun 1 is connected to the hand via a conversion module. The holding parts work together to allow the hot air gun 1 to flexibly adjust its angle and position to adapt to the welding needs of different floor gaps. At the same time, the design of the welding parts 5 allows the adhesive strip to enter the welding cavity evenly and stably, and through the heating effect of the hot air gun 1, it can achieve efficient and precise welding operations. An air inlet pipe 6 is fixedly connected to the welding parts 5 and is sleeved on the connecting pipe 4 so that it can be used with the adapter 3. The handheld part of the hot air gun 1 is equipped with a heat-proof bandage, which can effectively prevent the operator from being burned by the high temperature of the hot air during use and improve the safety of operation.
[0021] The working principle is as follows: Before welding, operators need to wear protective equipment such as gloves and goggles. Then, the adapter 3 is connected to the hot air gun 1, and the welding part 5 is connected to the adapter 3. The welding process mainly relies on the coordinated work of the hot air gun 1, adapter 3, connecting pipe 4, welding part 5, and air inlet pipe 6. During operation, the operator holds a handheld device with a heat-resistant bandage, which allows for flexible adjustment of the angle and position of the adapter 3, aligning it with the gaps in the train's floor. Simultaneously, during welding... When the rubber welding rod is inserted into the glue inlet 7, after the hot air gun 1 is turned on, the hot air generated by the hot air gun 1 flows through the connecting pipe 4 and enters the welding chamber. The rubber welding rod is heat-treated. Then the welding part 5 is slowly moved along the gap so that the discharge port 501 on the welding part 5 cooperates with the limiting seat 502, so that the limiting seat 502 is attached to the gap. Then the discharge port 501 is raised a certain distance and slides along the gap of the floor at a uniform speed. After the welding is completed, the flattening knife is used to flatten it, thereby achieving the purpose of rapid welding.
[0022] Throughout the welding process, work efficiency was significantly improved. The drying time for floor repair was reduced from 12 to 48 hours for a single repair to less than one minute, greatly improving work efficiency. Taking the Beijing-bound route as an example, the floor repair time was shortened by an average of one to two days. Combined with the passenger capacity of a standard EMU train, a single fault handling can increase operating revenue by more than 400,000 to 800,000 yuan, thus meeting the demand for rapid welding of EMU floor surfaces.
[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A rapid welding torch for the floor surface of high-speed trains, comprising a hot air gun (1), characterized in that, Also includes: A detachable conversion module is attached to the air outlet of the hot air gun (1). The conversion module has a handheld device on its side wall, and the top of the conversion module is connected to the air outlet of the hot air gun (1) through an air outlet channel. The adhesive strip welding assembly is detachably connected to the conversion module. Among them, the front end of the adhesive strip welding assembly is integrally formed with an expansion frame, and an adhesive inlet (7) is provided on the expansion frame, which is connected to the expansion frame.
2. The high-speed welding torch for the floor surface of a high-speed train according to claim 1, characterized in that, The conversion module includes a conversion head (3), a connecting pipe (4) is provided at the top center of the conversion head (3), an air outlet pipe (101) is provided on the hot air gun (1), and the conversion head (3) is sleeved on the air outlet pipe (101).
3. A rapid welding torch for the floor surface of a high-speed train according to claim 2, characterized in that, The handheld device includes a connecting rod (2), and the conversion head (3) is fixedly connected to the end of the connecting rod (2).
4. A rapid welding torch for the floor surface of a high-speed train according to claim 2, characterized in that, The adhesive strip welding assembly includes a welding component (5), a welding cavity is provided in the middle of the welding component (5), the adhesive inlet (7) is connected to the welding cavity, the bottom of the expansion frame is provided with an outlet (501), and a limiting seat (502) is provided at the rear end of the welding component (5), and the outlet (501) is adapted to the limiting seat (502).
5. A rapid welding torch for the floor surface of a high-speed train according to claim 4, characterized in that, An air inlet pipe (6) is fixedly connected to the welded part (5), and the air inlet pipe (6) is sleeved on the connecting pipe (4).
6. A rapid welding torch for the floor surface of a high-speed train according to claim 1, characterized in that, The handheld part of the hot air gun (1) is equipped with a heat-resistant bandage.