Fixing device for waterproof roll laying

Abstract

The utility model discloses a fixing device for laying waterproof coiled materials. Comprising a base, a pair of unwinding roller and tensioning roller which are parallel to each other and are rotationally arranged above the base, a pair of isolation paper winding roller and traction roller which are parallel to the tensioning roller and are rotationally arranged below the base, a servo motor for driving the isolation paper winding roller to rotate, and a rolling cylinder which is parallel to the traction roller and is rotationally arranged below the base, the universal wheels are installed below the base and support the base together with the rolling cylinder, a long-strip-shaped hole for a coiled material to penetrate through is formed in the middle of the base, the tensioning roller and the traction roller are symmetrically located on the upper side and the lower side of the long-strip-shaped hole, the rolling cylinder and the isolation paper winding roller are located on the two sides of the traction roller, and the isolation paper winding roller is suspended below the base. The universal wheel and the rolling cylinder are close to the front end and the rear end of the base respectively, and the isolation paper winding roller and the traction roller are located between the universal wheel and the rolling cylinder. The automatic paving machine has the advantages of being high in paving efficiency and low in labor cost.

Description

Technical Field

[0001] The utility model relates to the technical field of self-adhesive waterproof coiled material laying engineering, in particular to a fixing device for laying waterproof coiled material. Background Art

[0002] Self-adhesive waterproofing membranes are mainly used in building walls, roofs, tunnels, roads, landfills, and other places. They are a kind of flexible building material that can be rolled into a roll to protect against external rainwater and groundwater leakage. The existing self-adhesive waterproofing membrane laying construction is usually manually operated by staff. The construction method is that the staff rolls the self-adhesive waterproofing membrane onto the bottom surface and tears off the isolation paper at the bottom of the self-adhesive waterproofing membrane while rolling to remove the air under the membrane. Finally, roller pressure is used to reinforce the bond. This manual waterproofing membrane construction is not only time-consuming and inefficient, but also requires the cooperation of multiple people, resulting in high labor costs. Utility Model Content

[0003] The utility model aims to provide a device for laying and fixing waterproof coiled materials, which has the effects of high laying efficiency and low labor cost.

[0004] The above-mentioned technical purpose of the present utility model is achieved through the following technical solutions: a device for laying and fixing waterproof roll materials, comprising a base, a pair of unwinding rollers and tensioning rollers parallel to each other and rotatably arranged above the base, a pair of release paper winding rollers and traction rollers parallel to the tensioning rollers and rotatably arranged below the base, a servo motor for driving the release paper winding rollers to rotate, a rolling cylinder parallel to the traction roller and rotatably arranged below the base, a pair of universal wheels installed below the base and supporting the base together with the rolling cylinder, a long hole for the roll material to pass through is opened in the middle of the base, the tensioning roller and traction roller are symmetrically located on the upper and lower sides of the long hole, the rolling cylinder and release paper winding roller are located on both sides of the traction roller, and the release paper winding roller is suspended below the base, the universal wheel and rolling cylinder are close to the front and rear ends of the base respectively, and the release paper winding roller and traction roller are located between the two.

[0005] The utility model is further configured as follows: a pair of vertical support plates are fixedly provided on the top of the base, and the two ends of the unwinding roller and the tensioning roller are rotatably connected to the side walls of the two support plates respectively; a pair of support seat one, support seat two, support seat three and support seat four are fixedly provided under the base in sequence; the two ends of the rolling cylinder are rotatably connected to the two support seats one, the two ends of the traction roller are rotatably connected to the two support seats two, the isolation paper winding roller is rotatably connected to the two support seats three, the servo motor is fixed to the side of one support seat three facing away from the other support seat three, and one end of the isolation paper winding roller passes through the support seat three to be connected to the output end of the servo motor, and the two universal wheels are installed at the lower ends of the two support seats four.

[0006] The utility model is further configured as follows: a groove one is respectively provided on the top of the two support plates for the two ends of the unwinding roller to lie in, and the bottom of the groove one is in a semicircular arc shape and contacts the lower half side surface of the unwinding roller.

[0007] The utility model is further configured as follows: the support plate is provided with slots 1 on both sides of the groove 1, the slots 1 on the two support plates are respectively movably connected with the plugging plates 1, and the top ends of the two plugging plates are commonly fixedly connected with a connecting plate, a semicircular notch is provided at the lower end of the plugging plate and contacts the upper half side surface of the unwinding roller, the support plate is respectively fixedly provided with positioning plates on both sides of the connecting plate, and square positioning pins for locking the connecting plate are slidably inserted on the side walls of the two positioning plates.

[0008] The utility model is further configured as follows: a second groove is further provided on the support plate, and two slots are provided on both sides of the second groove of the support plate, and the two slots on the two support plates are respectively movably connected with two plug-in plates, and the two ends of the tensioning roller are respectively rotatably connected to the two plug-in plates, and an adjustment component for adjusting the relative height position of the two plug-in plates in the second groove is provided on the support plate.

[0009] The utility model is further configured as follows: the adjustment component includes a cover plate fixed to the support plate with screws and covering the two openings of the groove, a screw rod vertically passing through the cover plate and with the lower end rotatably connected to the top of the second plug plate, a nut fixed to the cover plate and threadedly connected to the screw rod, and a straight-shaped handle fixedly connected to the top of the screw rod.

[0010] The utility model is further configured as follows: a connecting hole is provided at the top of the second plugboard, and the inner diameter of the connecting hole is larger than the outer diameter of the screw; a connector head that is movably plugged into the connecting hole is fixedly provided at the lower end of the screw; a retaining ring covering the connecting hole is screwed to the top of the second plugboard, the screw passes through the middle of the retaining ring, and the outer diameter of the screw is the same as the inner diameter of the retaining ring.

[0011] The two lever of the two rear wheels are connected along the longitudinal axis, and the limit of each of the two rear wheels is increased, and the limit of each of the two rear wheels is increased, and the rotation of the two rear wheels is increased. The two rear wheels have a decreased size of 2.0 than the turntable and the detent. When the two wheels have been rotated to move relative to each other, the detent is increased in size and the detent is increased in size. When the two wheels have been rotated to move relative to each other, the detent is increased in size and the detent is increased in size.

[0012] The present invention is further configured as follows: a handrail is fixedly connected between the two flip plates, and the handrail is close to the upper end of the flip plate and is located above the support plate.

[0013] The present invention is further configured as follows: three side walls of the inserting plate are provided with square through holes, and the square through holes are close to the top of the inserting plate.

[0014] The beneficial effect of the utility model is that by adopting the above-mentioned laying and fixing device, when it is necessary to lay the self-adhesive waterproof roll, the cylindrical waterproof roll on the unwinding roller is first pulled out and passes through the tensioning roller, the long strip hole and the traction roller in sequence until the end of the roll is pressed on the ground by the traction roller; then the end of the roll and a section of release paper behind it are manually torn off, and wrapped and bonded to the release paper take-up roller; then one person pushes the vehicle body composed of a base, a rolling drum and a universal wheel forward, and since the end of the roll has been manually bonded and fixed to the ground, the waterproof roll on the unwinding roller will be continuously pulled out and automatically laid on the ground under the forward movement of the vehicle body, and at the same time, the servo motor will drive the release paper take-up roller to rotate and rewind the release paper, so as to tear off the release paper on it before the waterproof roll contacts the ground; finally, the rolling drum located behind the traction roller will roll the upper surface of the roll by its own weight after the traction roller lays the roll, thereby reinforcing the adhesion of the roll.

[0015] The entire waterproofing membrane laying process, except for preparation, is automatically constructed under the forward movement of the above-mentioned vehicle. Compared with traditional manual rolling and laying, it not only takes less time and is more efficient, but also only requires one person to operate after preparation is completed, so less manpower is used and labor costs are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 2 is a schematic diagram of the three-dimensional structure of this embodiment;

[0018] Figure 2 It is a structural cross-sectional view of this embodiment;

[0019] Figure 3 is an exploded view of this embodiment;

[0020] In the figure, 1. Base; 11. Long hole; 12. Support plate; 121. Groove 1; 122. Slot 1; 123. Positioning plate; 124. Groove 2; 125. Slot 2; 126. Hinge shaft; 127. Arc hole; 128. Slot 3; 13. Support seat 1; 14. Support seat 2; 15. Support seat 3; 16. Support seat 4; 2. Unwinding roller; 3. Tensioning roller; 4. Release paper winding roller; 5. Traction roller; 6. Servo motor; 7. Rolling cylinder; 8. Universal wheel; 9. Insert plate 1; 91. Connecting plate; 10. Square locating pin; 1a. Insert plate 2; 1a1. Connecting hole; 1b. Retaining ring; 1c. Cover plate; 1d. Screw; 1d1. Connecting head; 1f. Nut; 1g. I-shaped turning handle; 1h. Flip plate; 1h1. Hand lever; 1i. Sliding rod; 1j. Insert plate 3; 1j1. Square through hole. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0022] Example: A device for laying and fixing waterproof membranes, such as Figure 1-3 As shown, it includes a base 1, a pair of unwinding rollers 2 and tensioning rollers 3 that are parallel to each other and rotatably arranged above the base 1, a pair of release paper winding rollers 4 and traction rollers 5 that are parallel to the tensioning rollers 3 and rotatably arranged below the base 1, a servo motor 6 that drives the release paper winding roller 4 to rotate, a rolling cylinder 7 that is parallel to the traction roller 5 and rotatably arranged below the base 1, a pair of universal wheels 8 that are installed below the base 1 and support the base 1 together with the rolling cylinder 7. A long hole 11 for the coil to pass through is opened in the middle of the base 1, the tensioning roller 3 and the traction roller 5 are symmetrically located on the upper and lower sides of the long hole 11, the rolling cylinder 7 and the release paper winding roller 4 are located on both sides of the traction roller 5, and the release paper winding roller 4 is suspended below the base 1, the universal wheel 8 and the rolling cylinder 7 are close to the front and rear ends of the base 1 respectively, and the release paper winding roller 4 and traction roller 5 are located between them.

[0023] Furthermore, a pair of vertical support plates 12 are fixedly provided on the top of the base 1, and the two ends of the unwinding roller 2 and the tensioning roller 3 are respectively rotatably connected to the side walls of the two support plates 12. A pair of support seat 1 13, support seat 2 14, support seat 3 15 and support seat 4 16 are fixedly provided below the base 1 in sequence. The two ends of the rolling cylinder 7 are rotatably connected to the two support seats 13, the two ends of the traction roller 5 are rotatably connected to the two support seats 2 14, the isolation paper winding roller 4 is rotatably connected to the two support seats 3 15, the servo motor 6 is fixed to the side of one support seat 3 15 facing away from the other support seat 3 15, and one end of the isolation paper winding roller 4 passes through the support seat 3 15 to connect to the output end of the servo motor 6, and the two universal wheels 8 are installed at the lower ends of the two support seats 4 16. By adopting the above-mentioned support plate 12, support seat 1 13, support seat 2 14, support seat 3 15 and support seat 4 16, not only can each roller and rolling cylinder 7 be stably supported to rotate stably, but the support seat 3 15 and support seat 4 16 can also provide installation positions for the universal wheel 8 and the servo motor 6 under the base 1 respectively.

[0024] Furthermore, a groove 121 is respectively provided on the top of the two support plates 12 for the two ends of the unwinding roller 2 to lie in, and the bottom of the groove 121 is in a semicircular arc shape and contacts the lower half side of the unwinding roller 2; the support plate 12 is provided with a slot 122 on both sides of the groove 121, and the slots 122 on the two support plates 12 are movably connected with the plug-in plate 9, and the tops of the two plug-in plates 9 are fixedly connected to the connecting plate 91, and a semicircular arc notch is provided at the lower end of the plug-in plate 9, and contacts the upper half side of the unwinding roller 2, and the support plate 12 is fixedly provided with a positioning plate 123 on both sides of the connecting plate 91, and the side walls of the two positioning plates 123 are slidably inserted with square positioning pins 10 for locking the connecting plate 91. By adopting the above-mentioned groove 121, it is not only convenient for the staff to disassemble and assemble the unwinding roller 2 to replace the waterproof membrane, but also, in conjunction with the slot 122, the plug plate 9, the connecting plate 91 and other components, the unwinding roller 2 can be restricted and positioned at the bottom of the groove 121 for rotation, thereby effectively ensuring the rotation stability of the unwinding roller 2.

[0025] Furthermore, the support plate 12 is provided with a second groove 124. Two slots 125 are provided on either side of the groove 124. Two insert plates 1a are movably connected to the two insert plates 1a in the two slots 125 on the support plate 12. The tensioning roller 3 is rotatably connected to the two insert plates 1a at both ends. The support plate 12 is provided with an adjustment assembly for adjusting the relative height position of the insert plates 1a within the second groove 124. The adjustment assembly includes a cover plate 1c fixed to the support plate 12 and covering the opening of the second groove 124, a screw 1d extending vertically through the cover plate 1c and rotatably connected to the top of the second insert plate 1a at its lower end, a nut 1f fixed to the cover plate 1c and threadedly connected to the screw 1d, and a straight-shaped handle 1g fixedly connected to the top of the screw 1d. By using the aforementioned groove 124, insert plates, and adjustment assembly, it is convenient for personnel to adjust the height position of the tensioning roller 3 to maintain good tension on the web.

[0026] Furthermore, a connection hole 1a1 is formed at the top of the second plugboard 1a, and the inner diameter of the connection hole 1a1 is larger than the outer diameter of the screw 1d. A connector 1d1 is fixedly mounted at the lower end of the screw 1d, which is movably inserted into the connection hole 1a1. A retaining ring 1b is screwed to the top of the second plugboard 1a, covering the connection hole 1a1. The screw 1d passes through the middle of the retaining ring 1b, and the outer diameter of the screw 1d is the same as the inner diameter of the retaining ring 1b. This connection structure between the second plugboard 1a and the screw 1d not only enables a rotatable connection between the lower end of the screw 1d and the top of the plugboard, but the removable retaining ring 1b also facilitates maintenance and replacement of the screw 1d at any time.

[0027] Furthermore, a hinge shaft 126 is fixedly provided on one side of the two support plates 12 facing each other, and the two hinge shafts 126 are respectively hingedly connected to the flip plate 1h, and the hinge shaft 126 is located in the middle of the flip plate 1h. The two support plates 12 are respectively provided with an arc hole 127, and the center of the arc hole 127 coincides with the axis of the hinge shaft 126. A sliding rod 1i passing through the two arc holes 127 is fixedly connected between the two flip plates 1h, and the two ends of the sliding rod 1i slide in the two arc holes 127 respectively. The two support plates 12 are relatively A slot three 128 is provided on one side of each support plate 12, and the slot three 128 respectively penetrates the arc-shaped hole 127 on the support plate 12. The two slots three 128 are movably connected to the plug-in plate three 1j. When the slide rod 1i slides to one end of the arc-shaped hole 127, the lower end of the flip plate 1h is suspended in the air, and the plug-in plate three 1j is inserted into the slot three 128, which can prevent the slide rod 1i from sliding away from this end of the arc-shaped hole 127. When the slide rod 1i slides to the other end of the arc-shaped hole 127, the lower end of the flip plate 1h contacts the ground and lifts up the rear of the base 1.

[0028] By adopting the above technical solution, when the end of the coil needs to pass under the traction roller 5 and the rolling cylinder 7, first pull the insert plate 3 1j out of the slot 3 128 to remove the sliding obstruction of the slide bar 1i, then manually push the flip plate 1h to make the slide bar 1i slide relative to the arc hole 127, and then wait until the slide bar 1i slides from one end of the arc hole 127 to the other end, the lower end of the flip plate 1h will touch the ground and push up the rear of the base 1, and finally the traction roller 5 and the rolling cylinder 7 under the base 1 will be suspended in the air. , which makes it convenient for the staff to manually pass the coil through the traction roller 5 and the bottom of the rolling cylinder 7; when the above-mentioned coil threading work is ready, first pull the flip plate 1h back to the initial position, so that the slide bar 1i returns to the initial end of the arc hole 127, and then the lower end of the flip plate 1h will leave the ground and hang above the ground. Finally, insert the plug plate three 1j back into the slot three 128 and block the sliding of the slide bar 1i again, so that the lower end of the flip plate 1h can remain suspended to avoid affecting the forward movement of the base 1, the rolling cylinder 7 and the universal wheel 8.

[0029] Furthermore, a handrail 1h1 is fixedly connected between the two flip plates 1h. The handrail 1h1 is close to the upper end of the flip plate 1h and is located above the support plate 12. When the slide rod 1i is locked and sliding, it is convenient for the staff to push the base 1, the rolling cylinder 7 and the universal wheel 8 forward through the handrail 1h1.

[0030] Furthermore, a square through hole 1j1 is provided on the side wall of the plugboard three 1j, and the square through hole 1j1 is close to the top of the plugboard, which can facilitate the staff to extract or insert the plugboard three 1j from the slot three 128.

[0031] The working principle of this embodiment is as follows:

[0032] When it is necessary to lay the self-adhesive waterproof membrane, first pull out the cylindrical waterproof membrane on the unwinding roller 2, and pass it through the tensioning roller 3, the long strip hole 11 and the traction roller 5 in sequence until the end of the membrane is pressed on the ground by the traction roller 5; then manually tear off the end of the membrane and a section of release paper behind it, and wrap and bond it to the release paper take-up roller 4; then one person pushes the vehicle body composed of the base 1, the rolling drum 7 and the universal wheel 8 forward. Since the end of the membrane has been manually bonded and fixed to the ground, the waterproof membrane on the unwinding roller 2 will be continuously pulled out and automatically laid on the ground under the forward movement of the vehicle body. At the same time, the servo motor 6 will drive the release paper take-up roller 4 to rotate and rewind the release paper, so as to tear off the release paper on it before the waterproof membrane touches the ground; finally, the rolling drum 7 located behind the traction roller 5 will roll the upper surface of the membrane by its own weight after the traction roller 5 lays the membrane, thereby strengthening the adhesion of the membrane. The entire waterproofing membrane laying process, except for preparation, is automatically constructed under the forward movement of the above-mentioned vehicle. Compared with traditional manual rolling and laying, it not only takes less time and is more efficient, but also only requires one person to operate after preparation is completed, so less manpower is used and labor costs are low.

Claims

1. A device for laying and fixing waterproof membrane, characterized in that: The invention comprises a base (1), a pair of unwinding rollers (2) and a tensioning roller (3) which are parallel to each other and rotatably arranged above the base (1), a pair of isolation paper winding rollers (4) and a traction roller (5) which are parallel to the tensioning roller (3) and rotatably arranged below the base (1), a servo motor (6) which drives the isolation paper winding roller (4) to rotate, a rolling cylinder (7) which is parallel to the traction roller (5) and rotatably arranged below the base (1), a pair of rollers which are installed below the base (1) and support the base (1) together with the rolling cylinder (7). The base (1) is provided with a universal wheel (8), a long hole (11) for the coil to pass through is provided in the middle of the base (1), the tensioning roller (3) and the traction roller (5) are symmetrically located on the upper and lower sides of the long hole (11), the rolling cylinder (7) and the isolation paper winding roller (4) are located on both sides of the traction roller (5), and the isolation paper winding roller (4) is suspended below the base (1), the universal wheel (8) and the rolling cylinder (7) are respectively close to the front and rear ends of the base (1), and the isolation paper winding roller (4) and the traction roller (5) are located between the two.

2. The device for laying and fixing waterproof coiled material according to claim 1, characterized in that: A pair of vertical support plates (12) are fixedly provided on the top of the base (1), and the two ends of the unwinding roller (2) and the tensioning roller (3) are respectively rotatably connected to the side walls of the two support plates (12). A pair of support seat one (13), support seat two (14), support seat three (15) and support seat four (16) are fixedly provided below the base (1) in sequence. The two ends of the rolling cylinder (7) are rotatably connected to the two support seats one (13), the two ends of the traction roller (5) are rotatably connected to the two support seats two (14), the isolation paper winding roller (4) is rotatably connected to the two support seats three (15), the servo motor (6) is fixed to the side of one support seat three (15) facing away from the other support seat three (15), and one end of the isolation paper winding roller (4) passes through the support seat three (15) and is connected to the output end of the servo motor (6), and the two universal wheels (8) are installed at the lower ends of the two support seats four (16).

3. The device for laying and fixing waterproof coiled material according to claim 2, characterized in that: The tops of the two support plates (12) are respectively provided with grooves (121) for the two ends of the unwinding roller (2) to lie in, and the bottom of the groove (121) is in a semicircular arc shape and contacts the lower half side of the unwinding roller (2).

4. The device for laying and fixing waterproof coiled material according to claim 3, characterized in that: The support plate (12) is provided with slots (122) on both sides of the groove (121), and the slots (122) on the two support plates (12) are movably connected with the plug-in plates (9), and the tops of the two plug-in plates (9) are fixedly connected with the connecting plate (91). The lower end of the plug-in plate (9) is provided with a semicircular notch and contacts the upper side of the unwinding roller (2). The support plate (12) is fixedly provided with positioning plates (123) on both sides of the connecting plate (91), and square positioning pins (10) for locking the connecting plate (91) are slidably inserted on the side walls of the two positioning plates (123).

5. The device for laying and fixing waterproof coiled material according to claim 2, characterized in that: The support plate (12) is also provided with a second groove (124), and the support plate (12) is provided with a second slot (125) on both sides of the second groove (124). The second slots (125) on the two support plates (12) are respectively movably connected with the second plug-in plate (1a), and the two ends of the tensioning roller (3) are respectively rotatably connected to the two second plug-in plates (1a). The support plate (12) is provided with an adjustment component for adjusting the relative height position of the second plug-in plate (1a) in the second groove (124).

6. The device for laying and fixing waterproof coiled material according to claim 5, characterized in that: The adjustment assembly comprises a cover plate (1c) fixed on the support plate (12) by screws and covering the opening of the second groove (124), a screw rod (1d) vertically passing through the cover plate (1c) and having its lower end rotatably connected to the top of the second plug plate (1a), a nut (1f) fixed on the cover plate (1c) and threadedly connected to the screw rod (1d), and a straight-shaped handle (1g) fixedly connected to the top of the screw rod (1d).

7. The device for laying and fixing waterproof coiled material according to claim 6, characterized in that: The top of the second plug plate (1a) is provided with a connection hole (1a1), and the inner diameter of the connection hole (1a1) is larger than the outer diameter of the screw (1d). The lower end of the screw (1d) is fixedly provided with a connector (1d1) that is movably plugged into the connection hole (1a1). The top of the second plug plate (1a) is screwed to a retaining ring (1b) covering the connection hole (1a1). The screw (1d) passes through the middle of the retaining ring (1b), and the outer diameter of the screw (1d) is the same as the inner diameter of the retaining ring (1b).

8. The device for laying and fixing waterproof coiled material according to claim 2, characterized in that: A hinge shaft (126) is fixedly provided on one side of the two support plates (12) facing each other, and the two hinge shafts (126) are respectively hingedly connected to a flip plate (1h), and the hinge shaft (126) is located in the middle of the flip plate (1h). The two support plates (12) are respectively provided with an arc hole (127), and the center of the arc hole (127) coincides with the axis of the hinge shaft (126). A sliding rod (1i) passing through the two arc holes (127) is fixedly connected between the two flip plates (1h), and the two ends of the sliding rod (1i) slide in the two arc holes (127) respectively. The two support plates (12) are opposite to each other. One side is provided with a slot three (128), and the slot three (128) respectively penetrates the arc hole (127) on the support plate (12), and the two slots three (128) are movably connected with the plug plate three (1j). When the slide rod (1i) slides to one end of the arc hole (127), the lower end of the flip plate (1h) is suspended in the air, and the plug plate three (1j) is inserted into the slot three (128), which can prevent the slide rod (1i) from sliding away from this end of the arc hole (127). When the slide rod (1i) slides to the other end of the arc hole (127), the lower end of the flip plate (1h) contacts the ground and lifts up the rear of the base (1).

9. The device for laying and fixing waterproof coiled material according to claim 8, characterized in that: A handrail (1h1) is also fixedly connected between the two flip plates (1h), and the handrail (1h1) is close to the upper end of the flip plate (1h) and is located above the support plate (12).

10. The device for laying and fixing waterproof coiled material according to claim 8, characterized in that: The third side wall of the inserting plate (1j) is provided with a square through hole (1j1), and the square through hole (1j1) is close to the top of the inserting plate.

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