Intelligent precast pile monitoring system

Abstract

The utility model relates to the technical field of constructional engineering, and discloses an intelligent precast pile monitoring system. Comprising a base, one side of the base is fixedly connected with a collection machine, the interior of the collection machine is fixedly connected with an edge gateway, the upper end of the base is fixedly connected with a supporting column, the upper end of the supporting column is fixedly connected with a support, the upper surface of the support is fixedly connected with a hydraulic cylinder, and the telescopic end of the hydraulic cylinder penetrates through the bottom end of the support and is fixedly connected with a static pressure sleeve; a collecting structure is arranged between the support and the base. The hydraulic cylinder can be detected through the collecting structure, the pile descending pressure intensity value is reported to the collecting machine, meanwhile, the collecting structure can record the pile descending image, and collected information is uploaded in a 4G mode through an edge gateway in the collecting machine, so that the problem that static pressure pile construction needs to be manually supervised is solved, and the working efficiency is improved. Personnel can remotely detect information transmitted by the collector, and the trouble of collecting static pressure pile detection data by the device is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of building engineering, and specifically relates to a prefabricated pile intelligent monitoring system. BACKGROUND

[0002] Static pressure pile is a method of engineering pile foundation construction, and the static pressure pile method construction is a pile sinking process in which a pile is pressed into soil by a pile pressing mechanism of a static pressure pile machine through the counterforce provided by the self weight of the pile machine and the counterweight on the rack. The static pressure pile has the advantages of completely avoiding vibration, noise and pollution caused by hammering, and thus has the advantages of no damage to the pile, no noise, no vibration, no impact force and no pollution during construction.

[0003] During the static pressure pile sinking process, the pile will cause the stress field of the soil around the pile to be rearranged while the soil around the pile is squeezed, and in the saturated soil with low permeability, the excess pore water pressure will be generated, the shear strength of the soil will be reduced, and the bearing capacity of the pile foundation will be affected. The pressure received by the static pressure prefabricated pile during the construction process can be displayed through the instruments on the hydraulic cylinder oil circuit, but the precision is not high. In addition, the sinking depth of the static pressure prefabricated pile is also displayed by a simple instrument. In the current "Static Pressure Pile Construction Specification", the "manual recording table" method is adopted to record the "hydraulic pressure value" when each pile is pressed into the stratum "per meter". Since it is manually recorded, there is a lot of human nature, and it cannot completely and truly reflect the pressure condition of the pile body in the pile sinking process and the resistance generated by the stratum to the pile sinking, and the authenticity and reliability of the data cannot be guaranteed.

[0004] The current prefabricated pile intelligent monitoring system records the pressure and sinking depth of the pile body through manual recording or sensing devices, but lacks centralized processing and transmission of the collected data, and manual data collection and reporting are required, which increases the labor input and makes the prefabricated pile construction data collection process more inconvenient. UTILITY MODEL CONTENTS

[0005] The purpose of the present application is to solve the problems of the current lack of centralized processing and transmission of collected data, the need for manual data collection and reporting, and the inconvenience of the prefabricated pile construction data collection process, and the present application provides a prefabricated pile intelligent monitoring system.

[0006] The present application adopts the following technical solutions to achieve the above purpose:

[0007] The utility model provides a precast pile intelligent monitoring system, including the base, one side fixedly connected with the acquisition machine of base, fixedly connected with the edge gateway in the acquisition machine, the upper end of base is fixedly connected with the support, the upper surface of support is fixedly connected with the hydraulic cylinder, the telescopic end of hydraulic cylinder is fixedly connected with the static pressure cover through the bottom of support, the inboard wall of static pressure cover is fixedly connected with the push board, the inside of base is slidably provided with static pressure pile, and the acquisition structure is arranged between the support and the base.

[0008] Through the above technical scheme, when the device is used to collect static pressure pile construction data, the static pressure pile is first placed inside the device by a crane, and the end of the static pressure pile is attached to the ground surface through the support and the static pressure cover. Then the telescopic end of the hydraulic cylinder is retracted upwards, driving the static pressure cover to change its horizontal position with the static pressure pile. The push board is then used to limit the static pressure pile. Then the output end of the hydraulic cylinder is extended to drive the static pressure cover, causing the static pressure pile to move downwards towards the ground. At this time, the hydraulic cylinder can be detected by the acquisition structure, and the pile pressure value can be reported to the acquisition machine. At the same time, the acquisition structure can record the pile image and transmit it to the acquisition machine for aggregation. The collected information can be uploaded through the edge gateway in the acquisition machine, thereby avoiding the need for manual monitoring of static pressure pile construction. Personnel can remotely detect the information transmitted by the acquisition machine, reducing the inconvenience of collecting data for static pressure pile detection by the device, making it more convenient to use.

[0009] Further, the acquisition structure includes a pressure transmitter fixedly connected to the outer surface of the hydraulic cylinder. The sensing end of the pressure transmitter is fixedly connected to the hydraulic circuit of the hydraulic cylinder. The end of the pressure transmitter is fixedly connected to a cable. The end of the cable is fixedly connected to the acquisition machine. The acquisition machine is electrically connected to the pressure transmitter.

[0010] Through the above technical scheme, the output end of the hydraulic cylinder is extended to drive the static pressure cover, causing the static pressure pile to move downwards towards the ground. At this time, the pressure transmitter collects the data of the static pressure pile and synchronously transmits it to the acquisition machine through the cable.

[0011] Further, the base is slidably provided with a clamping plate one and a clamping plate two at both ends. The upper end of the clamping plate one and the clamping plate two is fixedly connected with a fixed column. The outer surface of the fixed column is rotatably connected with a pressing plate. The end of the pressing plate is rotatably connected with a measuring roller. The lower end of the acquisition machine is fixedly connected with a cable two. The end of the cable two is fixedly connected with the pressing plate. The measuring roller is electrically connected with the acquisition machine.

[0012] Through the above technical scheme, as the static pressure pile is pressed into the ground, the measuring roller also rotates. The cable two connected to the end of the pressing plate collects the rotation distance of the measuring roller and synchronously transmits it to the acquisition machine.

[0013] Further, a torsional spring is sleeved outside the fixed column, and two ends of the torsional spring are fixedly connected with the pressing plate and the clamping plate II respectively.

[0014] By adopting the above technical scheme, with the movement of the clamping plate I and the clamping plate II, the surface of the measuring roller is abutted against the surface of the static pressure pile, the static pressure pile is abutted against the pressing plate, the pressing plate is rotated along the fixed column, the torsional spring is contracted, the pressing plate is reset by the force of the torsional spring at this time, and the measuring roller is always attached to the surface of the static pressure pile.

[0015] Further, a two-way threaded rod is rotationally connected to the upper end of the base, two ends of the two-way threaded rod are threadedly connected with the clamping plate I and the clamping plate II respectively, a driving motor is fixedly connected to the upper end of the base, and an output end of the driving motor is fixedly connected with the two-way threaded rod.

[0016] By adopting the above technical scheme, the two-way threaded rod driven by the starting driving motor is rotated, the clamping plate I and the clamping plate II move towards each other, and the measuring roller installed at the upper end of the clamping plate I and the clamping plate II moves towards the two sides of the static pressure pile until the measuring roller is attached to the surface of the static pressure pile, so that the static pressure pile of different sizes is conveniently adapted.

[0017] Further, a guide column is fixedly connected to the upper end of the base, and the outer surface of the guide column is slidingly connected with the clamping plate I and the clamping plate II.

[0018] By adopting the above technical scheme, the clamping plate I and the clamping plate II move towards each other along the guide column, so that the movement of the clamping plate I and the clamping plate II is more stable.

[0019] Further, an L-shaped plate is fixedly connected to the end of the clamping plate I, a spherical camera is fixedly connected to the upper end of the L-shaped plate, a cable III is fixedly connected to one side of the L-shaped plate, an end of the cable III is fixedly connected with a collection machine, and the spherical camera is electrically connected with the collection machine.

[0020] By adopting the above technical scheme, the movement of the clamping plate I also drives the movement of the L-shaped plate, the spherical camera can change the photographing position according to the size of the static pressure pile, and the photographed image is synchronously uploaded to the collection machine through the cable III.

[0021] Further, a limiting frame is fixedly connected to the end of the clamping plate II, a limiting groove is formed in the limiting frame, and the limiting groove is slidingly connected with the L-shaped plate.

[0022] By adopting the above technical scheme, when the static pressure pile works, the movement of the clamping plate I also drives the movement of the L-shaped plate, and the L-shaped plate is limited by the limiting frame during the movement, so that the shaking during the movement is smaller.

[0023] To sum up, the present application includes at least one of the following benefits;

[0024] 1、The present application, when the device collects static pressure pile construction data, first puts the static pressure pile into the device through the crane, makes it pass through the support and the static pressure sleeve, and lets the end part adhere to the construction ground. Then the telescopic end of the hydraulic cylinder will shrink upwards, driving the static pressure sleeve to change its horizontal position with the static pressure pile. The static pressure pile is then positioned by the push plate, and then the output end of the hydraulic cylinder is driven to make the static pressure sleeve move towards the ground. At this time, the pressure transmitter collects the data of the static pressure pile and synchronously transmits it to the acquisition machine through the cable. By starting the driving motor to drive the rotation of the double-threaded rod, the clamping plate one and the clamping plate two move towards each other along the guide column, thereby driving the measuring rollers installed on the upper end of the clamping plate one and the clamping plate two to move towards the two sides of the static pressure pile until the measuring rollers adhere to the surface of the static pressure pile. At this time, with the movement of the clamping plate one and the clamping plate two, the surface of the measuring roller is in contact with the surface of the static pressure pile, which makes the static pressure pile in contact with the pressure plate, and the pressure plate rotates along the fixed column, making the torsional spring contract. At this time, the pressure plate is reset by the force exerted by the torsional spring, so that the measuring roller always adheres to the surface of the static pressure pile. As the static pressure pile is pressed into the ground, the measuring roller also rotates, and the cable two connected to the end of the pressure plate collects the rotation distance of the measuring roller and synchronously transmits it to the acquisition machine. The data transmitted by the pressure transmitter and the measuring roller is synchronized on the APP through the 4G network by the edge gateway, avoiding the problem of manual supervision of the static pressure pile construction. Personnel can remotely detect the information transmitted by the acquisition machine, reducing the trouble of collecting data for the device, and making it more convenient to use.

[0025] 2、The present application, when the static pressure pile is working, the movement of the clamping plate one adapts to different sizes of L static pressure pile models. At this time, the movement of the clamping plate one also drives the movement of the L-shaped plate, and the L-shaped plate is limited by the limiting frame during movement, making the movement process less shaking. The ball camera can change its shooting position according to the size of the static pressure pile, and the shooting effect is synchronized to the acquisition machine for uploading through the cable three. This makes the construction process more clearly photographed, and makes the device more versatile. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the three-dimensional structure of a prefabricated pile intelligent monitoring system in the present application;

[0027] Figure 2 is a partial sectional view of a prefabricated pile intelligent monitoring system in the present application;

[0028] Figure 3 is a schematic diagram of the three-dimensional structure of a prefabricated pile intelligent monitoring system in the present application; Figure 1 is an enlarged schematic diagram of A in the present application;

[0029] Figure 4 The embodiments of the present application are described below Figure 2 Amplified schematic view at B in the figure.

[0030] Explanation of reference signs:

[0031] 1, base; 2, acquisition machine; 3, support column; 4, static pressure sleeve; 5, support; 6, hydraulic cylinder; 7, cable one; 8, pressure transmitter; 9, cable two; 10, pressing plate; 11, measuring roller; 12, clamping plate one; 13, clamping plate two; 14, driving motor; 15, bidirectional threaded rod; 16, limiting frame; 17, spherical camera; 18, guide column; 19, static pressure pile; 20, push plate; 21, fixed column; 22, torsional spring; 23, L-shaped plate. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below Figures 1-4 , of course, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0033] With reference to Figure 1 , the present application provides a technical solution: an intelligent monitoring system for precast piles, comprising a base 1, one side of the base 1 being fixedly connected with an acquisition machine 2, the acquisition machine 2 being fixedly connected with an edge gateway inside, the base 1 being fixedly connected with a support column 3 at the upper end, the support column 3 being fixedly connected with a support 5 at the upper end, the support 5 being fixedly connected with a hydraulic cylinder 6 on the upper surface, the hydraulic cylinder 6 being fixedly connected with a static pressure sleeve 4 at the bottom end through the extension end, the static pressure sleeve 4 being fixedly connected with a push plate 20 on the inner side wall, the base 1 being slidably provided with a static pressure pile 19 inside, and the support 5 and the base 1 being provided with an acquisition structure therebetween.

[0034] When the device is used to collect the construction data of the static pressure pile 19, the static pressure pile 19 is first placed into the device by a crane, passes through the support 5 and the static pressure sleeve 4, and is attached to the ground at the end. Then the telescopic end of the hydraulic cylinder 6 is retracted upwards, driving the static pressure sleeve 4 to change its horizontal position with the static pressure pile 19, and the push plate 20 is used to limit the static pressure pile 19. Then the output end of the hydraulic cylinder 6 is extended to drive the static pressure sleeve 4, so that the static pressure pile 19 moves towards the ground. At this time, the hydraulic cylinder 6 can be detected by the collection structure, and the pile pressure value is reported to the collection machine 2. At the same time, the collection structure can record the pile image and transmit it to the collection machine 2 for collection. Through the edge gateway in the collection machine 2, the collected information is uploaded through 4G, thereby avoiding the problem of manual monitoring of the static pressure pile 19 construction, allowing personnel to remotely detect the information transmitted by the collection machine 2, reducing the trouble of collecting data of the device for detecting the static pressure pile 19, and making it more convenient to use.

[0035] Referring to Figure 2 With Figure 3 , Figure 4 , the collection structure includes a pressure transmitter 8 fixedly connected to the outer surface of the hydraulic cylinder 6. The sensing end of the pressure transmitter 8 is fixedly connected to the hydraulic circuit of the hydraulic cylinder 6. The end of the pressure transmitter is fixedly connected with a cable 7, and the end of the cable 7 is fixedly connected with a collection machine 2. The collection machine 2 is electrically connected with the pressure transmitter 8. The base 1 is slidably provided with a clamping plate 12 and a clamping plate 13 at both ends. The clamping plate 12 and the clamping plate 13 are both fixedly connected with a fixed column 21 at the upper end. The outer surface of the fixed column 21 is rotatably connected with a pressing plate 10. The end of the pressing plate 10 is rotatably connected with a measuring roller 11. The lower end of the collection machine 2 is fixedly connected with a cable 9. The end of the cable 9 is fixedly connected with the pressing plate 10. The measuring roller 11 is electrically connected with the collection machine 2. The upper end of the base 1 is rotatably connected with a bidirectional threaded rod 15. The two ends of the bidirectional threaded rod 15 are respectively threadedly connected with the clamping plate 12 and the clamping plate 13. The upper end of the base 1 is fixedly connected with a driving motor 14. The output end of the driving motor 14 is fixedly connected with the bidirectional threaded rod 15. The upper end of the base 1 is fixedly connected with a guide column 18. The outer surface of the guide column 18 is slidably connected with the clamping plate 12 and the clamping plate 13.

[0036] When the device collects the construction data of the static pressure pile 19, the static pressure pile 19 is first placed into the device by a crane, passes through the support 5 and the static pressure sleeve 4, and is attached to the ground. Then the telescopic end of the hydraulic cylinder 6 is retracted upwards, driving the static pressure sleeve 4 to change its horizontal position with the static pressure pile 19. The static pressure pile 19 is then limited by the push plate 20, and then the output end of the hydraulic cylinder 6 is extended to drive the static pressure sleeve 4, so that the static pressure pile 19 moves towards the ground. At this time, the pressure transmitter 8 collects the data of the static pressure pile 19 and synchronizes it to the acquisition machine 2 through the cable 1. By starting the driving motor 14 to drive the bidirectional threaded rod 15 to rotate, the clamping plate 1 and the clamping plate 2 move towards each other along the guide column 18, so that the measuring roller 11 installed on the upper end of the clamping plate 1 and the clamping plate 2 moves towards the static pressure pile 19, until the measuring roller 11 is attached to the surface of the static pressure pile 19. At this time, with the movement of the clamping plate 1 and the clamping plate 2, the surface of the measuring roller 11 is in contact with the surface of the static pressure pile 19, so that the static pressure pile 19 is in contact with the pressing plate 10, and the pressing plate 10 rotates along the fixed column 21, so that the torsional spring 22 is retracted. At this time, the pressing plate 10 is reset by the force of the torsional spring 22, so that the measuring roller 11 is always attached to the surface of the static pressure pile 19. As the static pressure pile 19 is pressed into the ground, the measuring roller 11 also rotates, and the cable 2 connected to the end of the pressing plate 10 collects the rotating distance of the measuring roller 11 and synchronizes it to the acquisition machine 2. The data transmitted by the pressure transmitter 8 and the measuring roller 11 is synchronized on the APP through the 4G network by the edge gateway, avoiding the need for manual monitoring of the static pressure pile 19 construction. Personnel can remotely detect the information transmitted by the acquisition machine 2, reducing the trouble of collecting data of the device for detecting the static pressure pile 19, and making it more convenient to use.

[0037] Referring to Figure 1 The end of the clamping plate 1 is fixedly connected with an L-shaped plate 23, the upper end of the L-shaped plate 23 is fixedly connected with a spherical camera 17, one side of the L-shaped plate 23 is fixedly connected with a cable 3, the end of the cable 3 is fixedly connected with the acquisition machine 2, and the spherical camera 17 is electrically connected with the acquisition machine 2. The end of the clamping plate 2 is fixedly connected with a limiting frame 16, a limiting groove is formed in the limiting frame 16, and the limiting groove is slidably connected with the L-shaped plate 23.

[0038] When the static pressure pile 19 works, the movement of the clamping plate 1 adapts to different sizes of static pressure pile 19 models. At this time, the movement of the clamping plate 1 also drives the L-shaped plate 23 to move, and the L-shaped plate 23 is limited by the limiting frame 16 during movement, so that the movement is less shaking, the shooting position of the spherical camera 17 can be changed according to the size of the static pressure pile 19, and the shooting effect is synchronized to the acquisition machine 2 for uploading through the cable 3. This facilitates clearer construction process shooting and makes the device more versatile.

[0039] Working principle: when the device collects the construction data of the static pressure pile 19, first put the static pressure pile 19 into the device through the crane, make it pass through the support 5 and the static pressure sleeve 4, let its end part adhere to the construction ground, then start the hydraulic cylinder 6, the telescopic end of the hydraulic cylinder 6 will shrink upwards, drive the static pressure sleeve 4 to change its horizontal position with the static pressure pile 19, limit the static pressure pile 19 through the push plate 20, then start the output end of the hydraulic cylinder 6 to drive the static pressure sleeve 4, make it drive the static pressure pile 19 to move downwards to the ground, at this time the pressure transmitter 8 will collect the data of the static pressure pile 19 pressing downwards and synchronously transmit to the acquisition machine 2 through the cable one 7, through the driving motor 14 driven to rotate the bidirectional threaded rod 15, make the clamping plate one 12 and the clamping plate two 13 move towards each other along the guide column 18, so as to drive the measuring roller 11 installed on the upper end of the clamping plate one 12 and the clamping plate two 13 to move towards the two sides of the static pressure pile 19, until the measuring roller 11 adheres to the surface of the static pressure pile 19, at this time, with the movement of the clamping plate one 12 and the clamping plate two 13, let the surface of the measuring roller 11 abut against the surface of the static pressure pile 19, make the static pressure pile 19 abut against the pressing plate 10, let the pressing plate 10 rotate along the fixed column 21, make the torsional spring 22 shrink, and through the force exerted by the torsional spring 22 at this time, let the pressing plate 10 reset, so that the measuring roller 11 always adheres to the surface of the static pressure pile 19, with the static pressure pile 19 pressing downwards into the ground, the measuring roller 11 also rotates, and the cable two 9 connected to the end of the pressing plate 10 will collect the rotating distance of the measuring roller 11, and synchronously transmit to the acquisition machine 2, and then the edge gateway synchronizes the data transmitted by the pressure transmitter 8 and the measuring roller 11 on the APP through the 4G network, avoiding the problem that manual monitoring is needed for the construction of the static pressure pile 19, so that personnel can remotely detect the information transmitted by the acquisition machine 2, reducing the trouble of collecting the detection data of the device for the static pressure pile 19, making it more convenient in use;

[0040] When the static pressure pile 19 works, with the movement of the clamping plate one 12, it is adapted to different sizes of static pressure pile 19 models, at this time the movement of the clamping plate one 12 also drives the L-shaped plate 23 to move, and the L-shaped plate 23 is limited by the limiting frame 16 when it moves, so that the movement is less shaking, so that the spherical camera 17 can change its shooting position according to the size of the static pressure pile, and synchronously upload the shooting effect to the acquisition machine 2 through the cable three, which makes the construction process more clearly, and makes the device more versatile.

[0041] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A precast pile intelligent monitoring system comprising a base (1), characterized in that: The base (1) is fixedly connected with a collection machine (2) on one side, the collection machine (2) is fixedly connected with an edge gateway inside, the base (1) is fixedly connected with a support column (3) on the upper end, the support column (3) is fixedly connected with a support (5) on the upper end, the support (5) is fixedly connected with a hydraulic cylinder (6) on the upper surface, the hydraulic cylinder (6) is fixedly connected with a static pressure sleeve (4) penetrating through the bottom end of the support (5) on the telescopic end, the static pressure sleeve (4) is fixedly connected with a push plate (20) on the inner side wall, the base (1) is slidably provided with a static pressure pile (19) inside, and the collection structure is arranged between the support (5) and the base (1).

2. The precast pile intelligent monitoring system according to claim 1, characterized in that: The collection structure comprises a pressure transmitter (8) fixedly connected to the outer surface of the hydraulic cylinder (6), the sensing end of the pressure transmitter (8) is fixedly connected with the hydraulic circuit of the hydraulic cylinder (6), the end of the pressure transmitter is fixedly connected with a cable I (7), the end of the cable I (7) is fixedly connected with the collection machine (2), and the collection machine (2) is electrically connected with the pressure transmitter (8).

3. The precast pile intelligent monitoring system according to claim 2, characterized in that: The base (1) is slidably provided with a clamping plate I (12) and a clamping plate II (13) at both ends, respectively, the clamping plate I (12) and the clamping plate II (13) are both fixedly connected with a fixed column (21) on the upper end, the fixed column (21) is rotatably connected with a pressing plate (10) on the outer surface, the pressing plate (10) is rotatably connected with a measuring roller (11) on the end, the collection machine (2) is fixedly connected with a cable II (9) on the lower end, the end of the cable II (9) is fixedly connected with the pressing plate (10), and the measuring roller (11) is electrically connected with the collection machine (2).

4. The precast pile intelligent monitoring system according to claim 3, characterized in that: The fixed column (21) is sleeved with a torsional spring (22) on the outer side, and the torsional spring (22) is fixedly connected with the pressing plate (10) and the clamping plate I (12) at both ends, respectively.

5. The precast pile intelligent monitoring system according to claim 4, characterized in that: The base (1) is rotatably connected with a bidirectional threaded rod (15) on the upper end, the bidirectional threaded rod (15) is threadedly connected with the clamping plate I (12) and the clamping plate II (13) at both ends, respectively, the base (1) is fixedly connected with a driving motor (14) on the upper end, and the output end of the driving motor (14) is fixedly connected with the bidirectional threaded rod (15).

6. The precast pile intelligent monitoring system according to claim 5, characterized in that: The base (1) is fixedly connected with a guide column (18) on the upper end, and the guide column (18) is slidably connected with the clamping plate I (12) and the clamping plate II (13) on the outer surface.

7. The precast pile intelligent monitoring system according to claim 3, characterized in that: The clamping plate I (12) is fixedly connected with an L-shaped plate (23) on the end, the L-shaped plate (23) is fixedly connected with a spherical camera (17) on the upper end, one side of the L-shaped plate (23) is fixedly connected with a cable III, and the end of the cable III is fixedly connected with the collection machine (2), and the spherical camera (17) is electrically connected with the collection machine (2).

8. The precast pile intelligent monitoring system according to claim 7, characterized in that: The clamping plate II (13) is fixedly connected with a limiting frame (16) on the end, a limiting groove is formed in the limiting frame (16), and the limiting groove is slidably connected with the L-shaped plate (23) inside.

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