Device for assisting geomembrane creeping welding machine to climb over retaining wall

Abstract

The utility model discloses a device for assisting a geomembrane creeping and welding machine to climb over a retaining wall, which comprises an upper straddle plate, four telescopic supporting legs distributed in a rectangular shape are fixed on the lower side face of the upper straddle plate in a sliding mode, two of the four telescopic supporting legs are arranged on one side of the retaining wall in a straddle mode, and the other two telescopic supporting legs are arranged on the other side of the retaining wall in a straddle mode. The left end and the right end of the upper track plate are hinged to a long-strip-shaped left striding plate and a long-strip-shaped right striding plate respectively, the left striding plate and the right striding plate are symmetrically arranged in a splayed shape, and the upper striding plate, the left striding plate and the right striding plate form a track for assisting the climbing welding machine in walking. The device has the advantages of being simple in structure, convenient to operate, low in manufacturing cost and capable of remarkably improving the welding quality, can assist a creeping welding machine to smoothly pass through a retaining wall when a geomembrane is welded, ensures continuity and stability of the welding process, can remarkably improve the welding quality, reduces the problems of welding holes, discontinuous welding and the like, and improves the working efficiency. And meanwhile, the subsequent repair and maintenance cost is also greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building construction, more specifically, the utility model is a device for assisting geomembrane welding machine to climb over retaining wall. BACKGROUND

[0002] In the laying and welding operation links of the impermeable geomembrane, the importance of the welding machine is self-evident, it needs to cross the earth retaining wall structure to perform the geomembrane welding task. Especially in the key nodes of the wall root internal corner and the top external corner of the retaining wall structure, the welding machine must show excellent flexibility to realize the accurate 90° and 270° angle adjustment. However, this series of angle transformation undoubtedly puts forward strict challenges to the smoothness of the welding machine, the continuity of the welding operation and the stability of the track system, and these factors are directly related to the final welding quality of the weld.

[0003] The root cause of all these problems is that the welding machine encounters the problem of unsmooth walking when climbing over the retaining wall. In the welding operation process, if the walking speed of the welding machine and the speed of the welding operation cannot achieve harmony and unity, a series of chain reactions may be caused. Specifically, when the welding machine advances at high speed and the welding work cannot keep up in time, the weld may be broken or not fully fused due to uneven stress, which is called single-weld problem, which will undoubtedly cause a fatal blow to the impermeable effect of the geomembrane. On the other hand, if the welding machine stays at a specific position such as the internal corner or external corner of the retaining wall for too long, it will also have serious consequences. Long-term stagnation will cause the geomembrane in this area to be invaded by excessive heat, resulting in defects such as melt holes or holes. These weld holes not only damage the overall structural integrity of the geomembrane, but also seriously weaken its impermeability, posing a threat to the safety and durability of the overall project that cannot be ignored. SUMMARY

[0004] To solve the technical problem that the existing geomembrane welding machine is prone to welding discontinuity or even weld holes when climbing over the retaining wall, from the perspective of assisting the welding machine to cross the retaining wall, the utility model innovatively provides a device for assisting geomembrane welding machine to climb over retaining wall, which has the advantages of simple structure, convenient operation, low manufacturing cost and significantly improved welding quality. It can assist the welding machine to smoothly pass through the retaining wall when welding the geomembrane, ensure the continuity and stability of the welding process, significantly improve the welding quality, reduce the occurrence of weld holes and welding discontinuity, and greatly reduce the cost of subsequent maintenance and maintenance.

[0005] To achieve the above technical purposes, the utility model discloses a kind of device that auxiliary geomembrane clambering welding machine surmounts retaining wall, including upper cross plate, the lower side of the upper cross plate is slidably fixed with four rectangular distribution telescopic legs, two telescopic legs in four The telescopic legs are arranged on the side of retaining wall, and the other two telescopic legs are arranged on the other side of retaining wall, the left and right ends of the upper rail plate are respectively hinged with left cross plate and right cross plate, which are all in the shape of strip, the left cross plate and right cross plate are arranged in eight characters symmetry, the upper cross plate, left cross plate and right cross plate form the track that auxiliary clambering welding machine walks.

[0006] Further, the utility model discloses a kind of device that auxiliary geomembrane clambering welding machine surmounts retaining wall, wherein, the left cross plate includes left outer cross plate and left inner cross plate, the left end of the upper cross plate is hinged with left outer cross plate, the two sides of left outer cross plate are all inwardly bent and form first insertion slot, the left inner cross plate is inserted into the first insertion slot of left outer cross plate, the upper half of left inner cross plate is equipped with first through-hole, first locking nut coaxial with first through-hole is also welded on left inner cross plate, first bolt that is in abutment with the lower side wall of left outer cross plate is rotated and mounted on the first locking nut;The right cross plate includes right outer cross plate and right inner cross plate, the right end of the upper cross plate is hinged with right outer cross plate, the two sides of right outer cross plate are all inwardly bent and form second insertion slot, the right inner cross plate is inserted into the second insertion slot of right outer cross plate, the upper half of right inner cross plate is equipped with second through-hole, second locking nut coaxial with second through-hole is also welded on right inner cross plate, second bolt that is in abututment with the lower side wall of right outer cross plate is rotated and mounted on the second locking nut.

[0007] Further, the utility model discloses a kind of device that auxiliary geomembrane clambering welding machine surmounts retaining wall, wherein, the left end of the upper cross plate is equipped with multiple left rotation grooves, multiple the first rotation hole that is in through itself is equipped in the left rotation groove, the upper end of left outer cross plate is equipped with left connecting block with multiple the concave-convex cooperation of left rotation groove, multiple the second rotation hole is equipped in the left connecting block, the first rotation hole and second rotation hole are inserted with left bolt pin;The right end of the upper cross plate is equipped with multiple right rotation grooves, multiple the third rotation hole that is in through itself is equipped in the right rotation groove, the upper end of right outer cross plate is equipped with right connecting block with multiple the concave-convex cooperation of right rotation groove, multiple the fourth rotation hole is equipped in the right connecting block, the third rotation hole and fourth rotation hole are inserted with right bolt pin.

[0008] Further, the utility model discloses a kind of device that auxiliary geomembrane clambering welding machine surmounts retaining wall, wherein, the left and right end faces of the upper cross plate are all circular arc surface, the end face of left connecting block and right connecting block is also all circular arc surface.

[0009] Further, the utility model discloses a kind of device that auxiliary geomembrane clambering welding machine surmounts retaining wall, wherein, the shape of left bolt pin and right bolt pin is all L-shaped.

[0010] Further, the utility model discloses a kind of devices for auxiliary geomembrane welding machine to climb over retaining wall, wherein, the lower end of left inner cross plate is equipped with left extension plate extending to left, the included angle between left extension plate and left inner cross plate is 135 °, the lower end of right inner cross plate is equipped with right extension plate extending to right, the included angle between right extension plate and right inner cross plate is 135 °.

[0011] Further, the utility model discloses a kind of devices for auxiliary geomembrane welding machine to climb over retaining wall, wherein, the lower side of upper cross plate is fixed with two parallel and front and rear interval arrangement inverted T-shaped guide rail, two connection sleeves are hung on each inverted T-shaped guide rail, the shape of each connection sleeve is T-shaped, left and right sides of each connection sleeve are fixed by third bolt and inverted T-shaped guide rail abutment, four telescopic legs are inserted and fixed with four connection sleeves one by one.

[0012] Further, the utility model discloses a kind of devices for auxiliary geomembrane welding machine to climb over retaining wall, wherein, the telescopic leg includes outer leg and inner leg, the outer leg is inserted and fixed with connection sleeve, the inner leg is inserted into outer leg, the lower half of outer leg is equipped with screw hole, fourth bolt is rotated and installed in screw hole, fourth bolt passes through the screw hole of outer leg and the outer wall of inner leg and is resisted.

[0013] Further, the utility model discloses a kind of devices for auxiliary geomembrane welding machine to climb over retaining wall, wherein, it further includes two connecting rods, two connecting rods are all from the connection sleeve hung in front side and are inserted from the connection sleeve hung in rear side, fixed nut is rotated and installed on the part of each connecting rod and is inserted.

[0014] Further, the utility model discloses a kind of devices for auxiliary geomembrane welding machine to climb over retaining wall, wherein, the connecting rod is inserted and fixed in outer leg in connection sleeve.

[0015] The device has the advantages that: the upper cross plate is arranged, four telescopic supporting legs are arranged on the lower side of the upper cross plate, the telescopic supporting legs are fixed in a rectangular distribution mode, two of the telescopic supporting legs are arranged on one side of the retaining wall, and the other two are arranged on the other side of the retaining wall, a unique "locking" mechanism is formed, the device is effectively connected with the retaining wall, and sliding or overturning of the device during operation is prevented. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 FIG. 1 is a perspective view of the device for assisting a geomembrane climbing welding machine to cross a retaining wall according to the present application.

[0017] Figure 2 FIG. 2 is a front view of the device for assisting a geomembrane climbing welding machine to cross a retaining wall according to the present application.

[0018] Figure 3 FIG. 3 is a bottom view of the device for assisting a geomembrane climbing welding machine to cross a retaining wall according to the present application.

[0019] Figure 4 FIG. 4 is a perspective view of the device for assisting a geomembrane climbing welding machine to cross a retaining wall according to the present application in a contracted state. DETAILED DESCRIPTION

[0020] The device for assisting a geomembrane climbing welding machine to cross a retaining wall according to the present application will be explained and described in detail below in combination with the accompanying drawings.

[0021] As Figures 1-4The utility model discloses a kind of devices for assisting geomembrane to climb over retaining wall of welding machine, including upper cross plate 1, four telescopic legs 2 are configured in the lower side of upper cross plate 1, the four telescopic legs 2 are slidably fixed in the way of rectangular distribution, two telescopic legs 2 are arranged on one side of retaining wall, and the other two telescopic legs 2 are arranged on the other side of retaining wall, form a unique "latch" mechanism, effectively connect device and retaining wall closely, prevent sliding or overturning during operation. To enhance the adaptability and flexibility of device, left cross plate 3 and right cross plate 4 shaped as long strip are respectively hinged in the left and right ends of upper track plate, left cross plate 3 and right cross plate 4 are arranged in splayed shape symmetry, and upper cross plate 1 is jointly constituted into a stable and flexible track for assisting welding machine to walk, not only make device can easily deal with retaining wall of different height and width, make the walking of welding machine more smooth. Its structure is simple, and the operation difficulty is low, and construction personnel can master operation method only by simple training, greatly improve work efficiency. The manufacturing cost of the device is relatively low, which helps to reduce the total construction cost and improve economic benefits. The structure is firm, and the operation is stable, so it is not easy to malfunction and damage during use, which greatly reduces the cost of subsequent maintenance and maintenance, and is convenient to disassemble and assemble, and can be reused. In actual operation process, construction personnel can easily install the device on retaining wall, and adapt to different terrain conditions by adjusting the length of telescopic leg 2, left cross plate 3 and right cross plate 4. With the stable walking and efficient operation of welding machine, the welding work of geomembrane can be carried out smoothly, and the welding quality is significantly improved. At the same time, since the occurrence of welding hole and welding discontinuity and other problems is reduced, the overall anti-seepage performance of the project is also effectively guaranteed.

[0022] In an embodiment of the utility model, left cross plate 3 is by left outer cross plate 31 and left inner cross plate 32 two parts, the upper end of left outer cross plate 31 is connected with the left end of upper cross plate 1 through hinged mode, allows left outer cross plate 31 to rotate freely within a certain range, to adapt to different terrain changes and construction needs. The two sides of left outer cross plate 31 are not simply linear extension, but inwardly bent, form first slot 33. First slot 33 not only provides accurate guidance for the insertion of left inner cross plate 32, but also ensures the stability of connection through its structural strength. Left inner cross plate 32 is inserted into the first slot 33 of left outer cross plate 31, and the extension length is adjusted by sliding, and then the left side slope is changed. In order to realize the accurate control and stable fixation of the extension length of left inner cross plate 32, the combination of first locking nut 34 and first bolt 35 is arranged. The upper half of left inner cross plate 32 is provided with first through hole, and first locking nut 34 is coaxially welded. When left inner cross plate 32 is adjusted to the required position, first bolt 35 is screwed into first locking nut 34 and tightly presses the lower side wall of left outer cross plate 31, so that the stable locking of left inner cross plate 32 is realized. This process is not only simple and fast, but also ensures the accuracy and stability of slope adjustment. Right cross plate 4 corresponding to left cross plate 3 adopts the mirror image design idea. Right outer cross plate 41 is also hinged with the right end of upper cross plate 1 by its upper end, and the second slot 43 is formed by the inward bending of its two side edges. After right inner cross plate 42 is inserted into the second slot 43 of right outer cross plate 41, the extension length can also be adjusted by sliding to meet the adjustment requirement of right side slope. In order to realize the accurate control and stable fixation of this adjustment process, the upper half of right inner cross plate 42 is provided with second through hole, and second locking nut 44 coaxial with second through hole is welded. The second bolt 45 screwed on the second locking nut 44 tightly presses the lower side wall of right outer cross plate 41, ensuring the stability of right inner cross plate 42 after adjustment. Through simple sliding and tightening operation, construction personnel can easily realize the accurate adjustment of slope, so as to meet the walking requirement of the seam welding machine under different terrain and construction requirements.

[0023] In an embodiment of the utility model, for ensuring that the submerged arc welding machine walks stably on the complex work surface, a plurality of left rotating grooves 11 are arranged at the left end of the upper cross plate 1 at intervals, and each left rotating groove 11 is equipped with a first rotating hole penetrating through it, which provides a basis for subsequent hinging. It is worth noting that the upper end of the left outer cross plate 31 is provided with a left connecting block 36 in concave-convex cooperation with these left rotating grooves 11. Each left connecting block 36 is also provided with a second rotating hole, which is aligned with the first rotating hole and is stably connected through a left bolt 5. The left bolt 5 is designed in the shape of L, which not only facilitates the operator to easily pick up, but also greatly simplifies the disassembly process. Similarly, the right end of the upper cross plate 1 also adopts similar arrangement, a plurality of right rotating grooves 12 are arranged at intervals, and each groove position is provided with a third rotating hole penetrating through it. The right outer cross plate 41 is in concave-convex cooperation with these right rotating grooves 12 through the right connecting block 46 at its upper end, and the fourth rotating hole on the right connecting block 46 is connected with the third rotating hole, and then fixed by a right bolt 6. The right bolt 6 is designed in the shape of L, which not only facilitates the operator to easily pick up, but also greatly simplifies the disassembly process. The symmetrical arrangement of the left cross plate 3 and the right cross plate 4 not only ensures the balance of the submerged arc welding machine in the left-right direction, but also further enhances the stability of the overall structure. When the left cross plate 3 and the right cross plate 4 need to be disassembled, only the corresponding left bolt 5 and right bolt 6 need to be pulled out. In addition, the end faces of the upper cross plate 1, the left connecting block 36 and the right connecting block 46 are designed as arc surfaces, so that a smooth arc transition surface is formed at the hinge, which can reduce the frictional resistance in the walking process of the submerged arc welding machine and improve the smoothness and stability of walking. In the walking path of the submerged arc welding machine, the slope is an important factor that cannot be ignored, therefore, a left extension plate 37 and a right extension plate 47 extending leftward and rightward are arranged at the lower end of the left inner cross plate 32 and the right inner cross plate 42 respectively. The included angle between the left extension plate 37 and the left inner cross plate 32 and the included angle between the right extension plate 47 and the right inner cross plate 42 are both designed as 135°, after the left extension plate 37 and the right extension plate 47 are fixed on the ground, the angle between the left outer cross plate 31 and the right outer cross plate 41 and the upper cross plate 1 is determined, and the slope of the left side and the right side is also determined, the selection of this angle can not only ensure that the submerged arc welding machine walks on the best slope, but also ensure that the submerged arc welding machine maintains a stable posture during walking, avoiding the safety hazards such as rollover caused by too large slope.

[0024] In the embodiment of the utility model, two inverted T-shaped guide rails 13 are fixed on the lower side of the upper cross plate 1, which not only improves the stability of the structure, but also greatly enhances the adaptability to different width retaining walls. The two inverted T-shaped guide rails 13 are precisely installed in parallel and spaced apart on the lower side of the upper cross plate 1, which not only ensures the overall stability of the structure, but also ingeniously utilizes the space, making the adjustment process more smooth. Two connecting sleeves 21 are hung on each inverted T-shaped guide rail 13, the connecting sleeve 21 can slide freely on the inverted T-shaped guide rail 13, and the left and right sides of the connecting sleeve 21 are provided with a third bolt 22 interface matched with the inverted T-shaped guide rail 13, by tightening the third bolt 22, the connecting sleeve 21 can be easily fixed at any position on the guide rail 13. The four connecting sleeves 21 are inserted and fixed with the four telescopic legs 2, so that they can be adjusted in length according to the width of the retaining wall, ensuring the close fit between the upper cross plate 1, the telescopic leg 2 and the retaining wall. The reason why this arrangement can flexibly adapt to retaining walls of different widths lies in the sliding and fixing mechanism of the connecting sleeve 21 on the T-shaped guide rail 13. When the distance between the two adjacent connecting sleeves 21 needs to be adjusted, the connecting sleeve 21 is only needed to be pushed to the desired position, and the third bolt 22 on both sides is tightened to achieve fixation. This process is not only simple and fast, but also can ensure the stability of the connecting sleeve 21 on the guide rail 13. In the actual construction process, the width of the retaining wall may change due to various factors. The traditional fixed structure often cannot cope with such changes, but the upper cross plate 1 in the design can adapt to retaining walls of different widths by adjusting the distance between the connecting sleeves 21. This high flexibility and adjustability not only improves the engineering efficiency, but also reduces the construction difficulty and cost.

[0025] In the embodiment of the utility model, the telescopic leg 2 includes an outer leg 23 and an inner leg 24, the outer leg 23 is inserted and fixed with the connecting sleeve 21, the inner leg 24 is inserted into the outer leg 23, the lower half of the outer leg 23 is provided with a threaded hole, the fourth bolt 25 is screwed in the threaded hole, and the fourth bolt 25 penetrates the threaded hole of the outer leg 23 and abuts against the outer peripheral wall of the inner leg 24. The length of the inner leg 24 extending out of the outer leg 23 can be changed at will, and can be fixed by the fourth bolt 25, so as to adapt to retaining walls of different heights. By controlling the extension length of the inner leg 24, and matching the extension length of the left inner cross plate 32 extending out of the left outer cross plate 31 and the right inner cross plate 42 extending out of the right outer cross plate 41, the slope of the left side and the right side of the whole device is adjusted to the most favorable slope for the walking of the climbing welding machine, thereby ensuring the smoothness of the walking of the climbing welding machine.

[0026] In the embodiment of the utility model, still include two connecting rods 7, two connecting rods 7 all from the connection sleeve 21 of the front side hang in and go out from the connection sleeve 21 of the rear side hang in, and the fixed nut 8 of every connecting rod 7 is screwed on the going out part, and the outer support leg 23 of connecting rod 7 is inserted in the connection sleeve 21. Through connecting rod 7 can link two connection sleeves 21 of the adjacent T-shaped guide rail 13 before and after, and can effectively fix the outer support leg 23 inserted in the connection sleeve 21.

[0027] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0028] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrated; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the communication or interaction relationship between two elements, unless otherwise explicitly limited. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0029] In the description of the specification, the description of the terms "the embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the skilled in the art can combine and combine the different embodiments or examples described in the specification and the characteristics of different embodiments or examples without contradiction.

[0030] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purpose and are not to be construed as indicating or implying relative importance or a specific number of the technical features indicated. Thus, the features defined with "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly and specifically limited.

[0031] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and simple improvement made on the essential content of the present application shall be included in the protection scope of the present application.

Claims

1. A device for assisting a geomembrane climbing welding machine in climbing over a retaining wall, characterized in that: The system includes an upper span plate, on the lower side of which four telescopic legs are slidably fixed in a rectangular arrangement. Two of the four telescopic legs span one side of the retaining wall, while the other two telescopic legs span the other side of the retaining wall. The left and right ends of the upper span plate are respectively hinged to a left span plate and a right span plate, both of which are long strips. The left and right span plates are symmetrically arranged in a figure-eight shape. The upper span plate, the left span plate, and the right span plate form a track to assist the climbing welding machine in its movement.

2. The device for assisting a geomembrane climbing welding machine to climb over a retaining wall according to claim 1, characterized in that: The left span includes a left outer span and a left inner span. The upper end of the left outer span is hinged to the left end of the upper span. Both sides of the left outer span are bent inward to form a first slot. The left inner span is inserted into the first slot of the left outer span. The upper half of the left inner span has a first through hole. A first locking nut coaxial with the first through hole is welded onto the left inner span. A first bolt abutting against the lower side wall of the left outer span is screwed onto the first locking nut. The right span includes a right outer span and a right inner span. The upper end of the right outer span is hinged to the right end of the upper span. Both sides of the right outer span are bent inward to form a second slot. The right inner span is inserted into the second slot of the right outer span. The upper half of the right inner span has a second through hole. A second locking nut coaxial with the second through hole is welded onto the right inner span. A second bolt abutting against the lower side wall of the right outer span is screwed onto the second locking nut.

3. The device for assisting a geomembrane climbing welding machine to climb over a retaining wall according to claim 2, characterized in that: The upper span plate has multiple left rotating slots spaced apart on its left end, and each of the multiple left rotating slots has a first rotating hole that penetrates through itself. The upper end of the left outer span plate has a left connecting block that mates with the multiple left rotating slots, and each of the multiple left connecting blocks has a second rotating hole. A left pin is inserted through the first rotating hole and the second rotating hole. The upper end of the upper span plate has multiple right rotating slots spaced apart, and each of the multiple right rotating slots has a third rotating hole that penetrates through itself. The upper end of the right outer span plate has a right connecting block that mates with the multiple right rotating slots, and each of the multiple right connecting blocks has a fourth rotating hole. A right pin is inserted through the third rotating hole and the fourth rotating hole.

4. The device for assisting a geomembrane climbing welding machine to climb over a retaining wall according to claim 3, characterized in that: Both the left and right ends of the upper span plate are arc surfaces, and the end faces of the left and right connecting blocks are also arc surfaces.

5. The device for assisting a geomembrane climbing welding machine to climb over a retaining wall according to claim 4, characterized in that: Both the left and right pins are L-shaped.

6. The device for assisting a geomembrane climbing welding machine to climb over a retaining wall according to claim 5, characterized in that: The lower end of the left inner span plate is provided with a left extension plate extending to the left, and the angle between the left extension plate and the left inner span plate is 135°. The lower end of the right inner span plate is provided with a right extension plate extending to the right, and the angle between the right extension plate and the right inner span plate is 135°.

7. The device for assisting a geomembrane climbing welding machine to climb over a retaining wall according to any one of claims 1-6, characterized in that: The lower side of the upper span plate is fixed with two parallel and spaced-ahead inverted T-shaped guide rails. Each inverted T-shaped guide rail is equipped with two connecting sleeves. Each connecting sleeve is T-shaped. The left and right sides of each connecting sleeve are fixed to the inverted T-shaped guide rails by a third bolt. The four telescopic legs are inserted and fixed to the four connecting sleeves one by one.

8. The device for assisting a geomembrane climbing welding machine to climb over a retaining wall according to claim 7, characterized in that: The telescopic outrigger includes an outer outrigger and an inner outrigger. The outer outrigger is inserted and fixed to the connecting sleeve. The inner outrigger is inserted into the outer outrigger. The lower half of the outer outrigger is provided with a threaded hole. A fourth bolt is screwed into the threaded hole. The fourth bolt passes through the threaded hole of the outer outrigger and abuts against the outer peripheral wall of the inner outrigger.

9. The device for assisting a geomembrane climbing welding machine to climb over a retaining wall according to claim 8, characterized in that: It also includes two connecting rods, both of which pass through the connecting sleeve on the front side and exit through the connecting sleeve on the rear side, and each connecting rod has a fixing nut screwed onto its exiting part.

10. The device for assisting a geomembrane climbing welding machine to climb over a retaining wall according to claim 9, characterized in that: The connecting rod passes through the outer support leg inserted into the connecting sleeve.

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