Contact device for connecting the segments of a gallery

Abstract

The application discloses a contact device for connecting a connecting channel segment, which comprises a jack, a pressure bearing structure, an adjustable pressure transmission structure and a direct pressure transmission structure, wherein the direct pressure transmission structure is attached to the side surface of the segment, the adjustable pressure transmission structure is arranged on the direct pressure transmission structure and is in sliding connection with the pressure transmission structure, the pressure bearing structure is arranged on the side of the adjustable pressure transmission structure which is away from the direct pressure transmission structure, the pressure bearing structure is connected with the direct pressure transmission structure through a pressure transmission shaft which penetrates the adjustable pressure transmission structure, the jack is arranged on the pressure bearing structure, a pressing structure is arranged on the direct pressure transmission structure, the pressing structure is used for connecting the contact device and the segment, a magnetic system is arranged on the pressure bearing structure, the magnetic system cooperates with a permanent magnet on the adjustable pressure transmission structure to make the adjustable pressure transmission structures approach or move away from each other, and the movement distance of the adjustable pressure transmission structure is proportional to the thrust of the jack; the application has the advantages of uniform pressure bearing and full automation.

Description

Technical Field

[0001] This invention relates to the field of tunnel construction equipment technology, and in particular to a contact device for connecting tunnel segments. Background Technology

[0002] With the continuous development and expansion of cities, urban traffic congestion has become an increasingly prominent problem. To alleviate traffic congestion, urban transportation is increasingly developing towards the air and underground. Underground railways, with their advantages of speed, convenience, large transport capacity, no pollution, no noise, and no occupation of surface space, are rapidly becoming the preferred solution for relieving traffic congestion. Many cities in my country, such as Guangzhou and Shenzhen, have also begun subway construction in recent years.

[0003] A connecting passage is a passage designed to connect two tunnels. If one tunnel experiences a sudden problem, such as drainage issues or equipment malfunctions causing it to stop operating, pedestrians can use the connecting passage to move to the other tunnel for quick escape and rescue.

[0004] When jacking tunnel segments in a connecting passage, traditional connecting devices directly act on the side of the segments to push them along the passage. However, these devices often limit the area of ​​force applied to the segments to the area pressurized by the jacks. This leads to frequent damage to the segments due to excessive pressure in certain areas, as well as damage to the waterstop strips caused by the jack pressure, significantly impacting construction time, accuracy, and cost. For example, a tunnel connecting passage construction device with patent number CN201610828517.9 uses hydraulic cylinders to jack the segments, enabling automatic forward excavation. However, the cylinder's output end directly contacts the side of the segment, meaning the area of ​​force applied to the segment is the same as the area pressurized by the cylinder's output end, still exhibiting the aforementioned problems. Summary of the Invention

[0005] The purpose of this invention is to provide a contact device for connecting channel segments, which solves the problem that in the prior art, excessive pressure in some areas of the segments causes damage to the segments and pressure applied by jacks causes damage to the waterstop strips, which often affects the construction time, accuracy and cost of the project.

[0006] This invention is implemented as follows: a contact device for a connecting tunnel segment, including a jack, characterized in that the contact device further includes a pressure-bearing structure, an adjustable pressure-transmitting structure, and a direct pressure-transmitting structure. The direct pressure-transmitting structure is fitted to the side of the segment. The adjustable pressure-transmitting structure is located on the side of the direct pressure-transmitting structure opposite to the segment and is slidably connected to the direct pressure-transmitting structure. The pressure-bearing structure is located on the side of the adjustable pressure-transmitting structure opposite to the direct pressure-transmitting structure. The pressure-bearing structure is connected to the direct pressure-transmitting structure via a pressure-transmitting shaft that passes through the adjustable pressure-transmitting structure. The jack is placed on the pressure-bearing structure. The direct pressure-transmitting structure is provided with a clamping structure for connecting the contact device to the segment.

[0007] The pressure-bearing structure is equipped with a magnetic system, which cooperates with the permanent magnet on the adjustable pressure-transmitting structure to make the adjustable pressure-transmitting structures move closer or further apart from each other, and the movement distance of the adjustable pressure-transmitting structure is proportional to the thrust of the jack.

[0008] A further technical solution of the present invention is as follows: The force of the jack is transmitted to the adjustable pressure transmission structure through the pressure-bearing structure. The adjustable pressure transmission structure can be adjusted in position according to the magnitude of the force, making the force distribution more uniform. Then, the force is transmitted to the tunnel segment through the direct pressure transmission structure, driving the tunnel segment to move. This makes the force transmitted from the jack to the tunnel segment more uniform, reducing stress concentration. The present invention has the advantages of uniform pressure distribution and full automation.

[0009] A further technical solution of the present invention is that the adjustable pressure transmission structure can move a greater distance to both sides as the pressure of the jack increases, and the pressure distributed is more even. The present invention can automatically distribute the pressure transmitted by the jack.

[0010] The clamping structure design allows the contact device to fit tightly against the tube segment, reducing stress concentration.

[0011] A further technical solution of the present invention is: the magnetic system includes a control circuit and a magnetic structure connected to the control circuit, the adjustable pressure transmission structure is provided with a groove, the permanent magnet is placed at both ends in the groove, and the magnetic end of the magnetic structure is placed in the groove and attracts or repels the permanent magnet.

[0012] A further technical solution of the present invention is: the control circuit includes an attraction circuit and a repulsion circuit placed above the attraction circuit; when the jack is in a non-working state, the magnetic structure is connected to the attraction circuit to adjust the adjustable pressure transmission structures to move closer to each other; when the jack is in a working state, the jack moves downward, and the magnetic structure is connected to the repulsion circuit to adjust the adjustable pressure transmission structures to repel each other.

[0013] The polarity of the circuit can be determined by whether the jack is being applied, thereby connecting to an attraction circuit or a repulsion circuit, so that the adjustable pressure transmission structure can repel or attract each other, thus achieving the purpose of automatic pressure equalization.

[0014] An attraction circuit refers to the magnetic poles generated by the coil connected to the attraction circuit when the jack is not applying pressure to the pressure-bearing structure, which are attracted by opposite magnetic poles to the permanent magnet in the adjustable pressure transmission structure; a repulsion circuit is the magnetic poles generated by the circuit that repel the permanent magnet when the jack applies pressure.

[0015] A further technical solution of the present invention is: the magnetic structure includes an electric sheet, a connecting plate placed below the electric sheet, an elastic member placed between the electric sheet and the connecting plate, a connecting rod placed below the connecting plate, and a coil. The connecting rod is hinged to the connecting plate and slides on the coil. When the connecting plate is subjected to a downward force, the connecting rod moves along the length direction of the coil and the connecting rods move away from each other. The coil is placed in the groove.

[0016] A further technical solution of the present invention is as follows: when the jack is not in operation, the electric sheet is connected to the attraction circuit to adjust the adjustable pressure transmission structure to move closer to each other; when the jack is in operation, the electric sheet moves downward to connect with the repulsion circuit to adjust the adjustable pressure transmission structure to repel each other; during the downward movement of the jack, the connecting rod moves along the coil to both ends; the more turns of the coil connected to the repulsion circuit, the stronger the magnetism.

[0017] When the jack is not applying pressure to the contact device, the magnetic poles generated by the electric coil in the magnetic system attract the opposite magnetic poles generated by the permanent magnet on the adjustable pressure transmission structure, causing the adjustable pressure transmission structure to automatically close. Conversely, when the jack applies pressure, the magnetic poles generated by the magnetic system repel the permanent magnet, causing the adjustable pressure transmission structure to automatically expand. This automatically ensures that the movable pressure transmission block is evenly stressed.

[0018] When the jack is not applying pressure, one electrode connects to the positive current and the other electrode connects to the negative current; when the jack applies pressure, one electrode connects to the negative current and the other electrode connects to the positive current, thus achieving the effect of switching the circuit.

[0019] A further technical solution of the present invention is: the magnetic end on the pressure-bearing structure is placed in the groove, the coil in the magnetic structure is placed in the magnetic end, and the control circuit is placed inside the pressure-bearing structure.

[0020] A further technical solution of the present invention is: a spring is provided at the connection between the jack and the pressure-bearing structure, and a pin is provided on the outer periphery of the jack to cooperate with the magnetic system. When the jack is not in operation, the magnetic system cooperates with the permanent magnet on the adjustable pressure transmission structure to bring the adjustable pressure transmission structures closer to each other. When the jack is in operation, the pin moves downward and the magnetic system cooperates with the permanent magnet on the adjustable pressure transmission structure to repel each other.

[0021] A further technical solution of the present invention is: one end of the spring is connected to the pressure-bearing structure and the other end is connected to the jack, so that the jack can only move up and down along the axial direction of the contact device.

[0022] A further technical solution of the present invention is that the jack and the pressure-bearing structure can be connected together by 12 springs. The amount of extension and contraction of the springs can be determined according to the pressure of the jack, thereby controlling the vertical displacement of the jack.

[0023] A further technical solution of the present invention is: the clamping structure includes a clamping member, a clamping coil, and a clamping spring; the clamping member is placed on both sides of the direct pressure transmission structure and is hinged to the direct pressure transmission structure; the clamping coil is placed on the side of the clamping member close to the direct pressure transmission structure; and the clamping spring is placed between the direct pressure transmission structure and the clamping member.

[0024] A further technical solution of the present invention is: a pressure sensor is provided on the side of the direct pressure transmission structure that contacts the tube segment, and the pressure sensor is electrically connected to the clamping coil through a controller. When the pressure sensor senses pressure, the controller controls the clamping coil to be de-energized, and the clamping spring causes the clamping coils to move closer to each other and clamp onto the tube segment.

[0025] A further technical solution of the present invention is that the direct pressure transmission structure is fan-shaped, and a rubber pad layer is provided on the side of the direct pressure transmission structure that contacts the tube segment.

[0026] The fan-shaped cross-section maximizes the contact area between the pipe segments and the device while completely avoiding damage to the waterstop strip.

[0027] The contact device does not come into contact with the water-swellable sealing strip of the tunnel segment, further preventing the sealing strip from being damaged due to direct contact between the jack and the segment. The rubber pad layer serves as a transition material between the connecting device and the tunnel segment, thus preventing segment rupture.

[0028] A further technical solution of the present invention is: the adjustable pressure transmission structure is provided with a ball, the direct pressure transmission structure is provided with a track, and the ball on the adjustable pressure transmission structure moves along the track.

[0029] A further technical solution of the present invention is: the electric sheet is provided with a switch rebound member, the switch rebound member is connected to the upper surface of the electric sheet through a spring member, and the switch rebound member is used to limit the position of the ejector pin.

[0030] The beneficial effects of this invention are as follows: The force of the jack in this invention is transmitted to the adjustable pressure transmission structure through the pressure-bearing structure. The adjustable pressure transmission structure can adjust its position according to the magnitude of the force, making the force distribution more uniform. Then, the force is transmitted to the tunnel segment through the direct pressure transmission structure, driving the tunnel segment to move. This makes the force transmitted from the jack to the tunnel segment more uniform, reducing stress concentration. At the same time, the adjustable pressure transmission structure can move a greater distance to both sides as the jack pressure increases, resulting in a more even distribution of pressure. This invention can automatically distribute the pressure transmitted by the jack, and has the advantages of uniform pressure distribution and full automation.

[0031] By changing the contact surface from a circle to a fan shape, the contact area was increased while avoiding damage to the waterstop strip. At the same time, the mobility of the pressure transmission block and the use of a pipe segment clamping device on the side of the pipe segment improved the uniformity of force transmission and thus avoided damage to the pipe segment.

[0032] When the jack does not apply pressure to the contact device, the magnetic poles generated by the electric coil in the magnetic system and the magnetic poles generated by the permanent magnet on the adjustable pressure transmission structure are attracted by opposite polarities, and the adjustable pressure transmission structure automatically closes. Conversely, when the jack applies pressure, the magnetic poles generated by the magnetic system and the permanent magnet repel each other, and the adjustable pressure transmission structure automatically expands, thus automatically ensuring that the movable pressure transmission block is evenly stressed. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a contact device for a communication channel segment provided by the present invention;

[0034] Figure 2 This is a top view of a contact device for a communication channel segment provided by the present invention;

[0035] Figure 3 This is a schematic diagram of the connection between the contact device and the clamping structure of a communication channel segment provided by the present invention;

[0036] Figure 4 This is a schematic diagram of the structure of the jack provided by the present invention;

[0037] Figure 5This is a schematic diagram of the structure of the jack provided by the present invention;

[0038] Figure 6 This is a schematic diagram of the pressure-bearing structure provided by the present invention;

[0039] Figure 7 This is a perspective view of the pressure-bearing structure provided by the present invention;

[0040] Figure 8 This is a schematic diagram of the magnetic system provided by the present invention;

[0041] Figure 9 This is a schematic diagram of the magnetic structure provided by the present invention;

[0042] Figure 10 This is a schematic diagram of the adjustable pressure transmission structure provided by the present invention;

[0043] Figure 11 This is a side view of the adjustable pressure transmission structure provided by the present invention;

[0044] Figure 12 This is a schematic diagram of the direct pressure transmission structure provided by the present invention;

[0045] Figure 13 This is a schematic diagram of the clamping structure provided by the present invention;

[0046] Figure 14 This is a schematic diagram of the structure of the contact between the ejector pin and the electrical sheet provided by the present invention.

[0047] Reference numerals: 1. Jack, 2. Pressure-bearing structure, 4. Adjustable pressure transmission structure, 5. Direct pressure transmission structure, 3. Clamping structure, 21. Magnetic system, 22. Magnetic structure, 23. Magnetic end, 41. Slide groove, 42. Permanent magnet, 221. Electric sheet, 222. Elastic element, 223. Connecting plate, 224. Connecting rod, 225. Coil, 12. Spring, 11. Ejector pin, 31. Clamping element, 32. Clamping coil, 33. Clamping spring, 43. Ball, 6. Rubber pad, 7. Switch rebound element, 8. Spring element. Detailed Implementation

[0048] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0049] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0050] Example 1:

[0051] Figures 1-14 A contact device for a connecting tunnel segment is shown, including a jack 1. The contact device further includes a pressure-bearing structure 2, an adjustable pressure-transmitting structure 4, and a direct pressure-transmitting structure 5. The direct pressure-transmitting structure 5 is fitted to the side of the tunnel segment. The adjustable pressure-transmitting structure 4 is positioned on the side of the direct pressure-transmitting structure 5 opposite to the tunnel segment, and the adjustable pressure-transmitting structure 4 is slidably connected to the direct pressure-transmitting structure 5. The pressure-bearing structure 2 is positioned on the side of the adjustable pressure-transmitting structure 4 opposite to the direct pressure-transmitting structure 5. The pressure-bearing structure 2 is connected to the direct pressure-transmitting structure 5 via a pressure-transmitting shaft that passes through the adjustable pressure-transmitting structure 4. The jack 1 is placed on the pressure-bearing structure 2. The direct pressure-transmitting structure 5 is provided with a clamping structure 3 for connecting the contact device to the tunnel segment.

[0052] The pressure-bearing structure 2 is provided with a magnetic system 21. The magnetic system 21 cooperates with the permanent magnet 42 on the adjustable pressure transmission structure 4 to make the adjustable pressure transmission structures 4 move closer or further apart from each other, and the movement distance of the adjustable pressure transmission structure 4 is proportional to the thrust of the jack 1.

[0053] In this invention, the force of the jack is transmitted to the adjustable pressure transmission structure through a pressure-bearing structure. The adjustable pressure transmission structure can be positioned according to the magnitude of the force, resulting in more uniform force distribution. The force is then transmitted to the tunnel segments through a direct pressure transmission structure, propelling the segments. This ensures a more uniform force distribution from the jack to the tunnel segments, reducing stress concentration. This invention offers the advantages of uniform pressure distribution and full automation.

[0054] The adjustable pressure transmission structure can move a greater distance to both sides as the pressure of the jack increases, and the pressure distributed is more even. This invention can automatically distribute the pressure transmitted by the jack.

[0055] The clamping structure design allows the contact device to fit tightly against the tube segment, reducing stress concentration.

[0056] In this embodiment, the magnetic system 21 includes a control circuit and a magnetic structure 22 connected to the control circuit. The adjustable pressure transmission structure 4 is provided with a groove 41. The permanent magnet 42 is placed at both ends in the groove 41. The magnetic end of the magnetic structure 22 is placed in the groove 41 and attracts or repels the permanent magnet 42.

[0057] In this embodiment, the control circuit includes an attraction circuit and a repulsion circuit placed above the attraction circuit. When the jack 1 is not in operation, the magnetic structure 22 is connected to the attraction circuit to adjust the adjustable pressure transmission structure 4 to move closer to each other. When the jack 1 is in operation, the jack 1 moves downward, and the magnetic structure 22 is connected to the repulsion circuit to adjust the adjustable pressure transmission structure 4 to repel each other.

[0058] In this embodiment, the positive and negative terminals of the circuit can be determined based on whether the jack is being applied, thereby connecting an attraction circuit or a repulsion circuit, so that the adjustable pressure transmission structure can repel or attract each other, thereby achieving the purpose of automatic pressure equalization.

[0059] In this embodiment, the attraction circuit refers to the magnetic poles generated by the coil connected to the attraction circuit when the jack is not applying pressure to the pressure-bearing structure, which are attracted by opposite magnetic poles to the magnetic poles generated by the permanent magnet in the adjustable pressure transmission structure; the repulsion circuit is the magnetic poles generated by the circuit that repel the permanent magnet when the jack applies pressure.

[0060] In this embodiment, the magnetic structure 22 includes an electric sheet 221, a connecting plate 223 placed below the electric sheet 221, an elastic member 222 placed between the electric sheet 221 and the connecting plate 223, a connecting rod 224 placed below the connecting plate 223, and a coil 225. The connecting rod 224 is hinged to the connecting plate 223 and slides on the coil 225. When the connecting plate 223 is subjected to a downward force, the connecting rod 224 moves along the length of the coil 225, and the connecting rods 224 move away from each other. The coil 225 is placed in the groove 41.

[0061] In this embodiment, when the jack 1 is not in operation, the electric piece 221 is connected to the attraction circuit to adjust the adjustable pressure transmission structure 4 to move closer to each other. When the jack 1 is in operation, the electric piece 221 moves downward to connect with the repulsion circuit to adjust the adjustable pressure transmission structure 4 to repel each other. During the downward movement of the jack 1, the connecting rod 224 moves along the coil to both ends. The more turns of the coil 225 connected to the repulsion circuit, the stronger the magnetism.

[0062] In this embodiment, when the jack is not applying pressure to the contact device, the magnetic poles generated by the coil in the magnetic system and the magnetic poles generated by the permanent magnet on the adjustable pressure transmission structure are attracted by opposite polarities, causing the adjustable pressure transmission structure to automatically close. Conversely, when the jack applies pressure, the magnetic poles generated by the magnetic system and the permanent magnet repel each other, causing the adjustable pressure transmission structure to automatically expand. This automatically ensures that the movable pressure transmission block is evenly stressed.

[0063] In this embodiment, when the jack is not applying pressure, one electrode connects to the positive current and the other electrode connects to the negative current; when the jack applies pressure, one electrode connects to the negative current and the other electrode connects to the positive current, thereby achieving the effect of switching the circuit.

[0064] In this embodiment, the magnetic end 23 on the pressure-bearing structure 2 is placed in the groove 41, the coil 225 in the magnetic structure 22 is placed in the magnetic end 23, and the control circuit is placed inside the pressure-bearing structure 2.

[0065] In this embodiment, a spring 12 is provided at the connection between the jack 1 and the pressure-bearing structure 2. A pin 11 that cooperates with the magnetic system 21 is provided on the outer periphery of the jack 1. When the jack 1 is not in operation, the magnetic system 21 cooperates with the permanent magnet 42 on the adjustable pressure transmission structure 4 to bring the adjustable pressure transmission structures 4 closer to each other. When the jack 1 is in operation, the pin 11 moves downward and the magnetic system 21 cooperates with the permanent magnet 42 on the adjustable pressure transmission structure 4 to repel each other.

[0066] In a preferred embodiment, one end of the spring is connected to the pressure-bearing structure and the other end is connected to the jack, so that the jack can only move up and down along the axial direction of the contact device.

[0067] In a preferred embodiment, the jack can be connected to the pressure-bearing structure via 12 springs. The extension and contraction of the springs can be determined according to the pressure applied to the jack, thereby controlling the vertical displacement of the jack.

[0068] In this embodiment, the clamping structure 3 includes a clamping member 31, a clamping coil 32, and a clamping spring 33. The clamping member 31 is placed on both sides of the direct pressure transmission structure 5 and is hinged to the direct pressure transmission structure 5. The clamping coil 32 is placed on the side of the clamping member 31 close to the direct pressure transmission structure 5. The clamping spring 33 is placed between the direct pressure transmission structure 5 and the clamping member 31.

[0069] In this embodiment, a pressure sensor is provided on the side of the direct pressure transmission structure 5 that contacts the tube segment. The pressure sensor is electrically connected to the clamping coil 32 through a controller. When the pressure sensor senses pressure, the controller controls the clamping coil 32 to be de-energized, and the clamping spring 33 causes the clamping coils 32 to move closer to each other and clamp onto the tube segment.

[0070] In this embodiment, the direct pressure transmission structure 5 is fan-shaped, and a rubber pad layer 6 is provided on the side of the direct pressure transmission structure 5 that contacts the tube segment.

[0071] The fan-shaped cross-section maximizes the contact area between the pipe segments and the device while completely avoiding damage to the waterstop strip.

[0072] The contact device does not come into contact with the water-swellable sealing strip of the tunnel segment, further preventing the sealing strip from being damaged due to direct contact between the jack and the segment. The rubber pad layer serves as a transition material between the connecting device and the tunnel segment, thus preventing segment rupture.

[0073] In this embodiment, the adjustable pressure transmission structure 4 is provided with a ball 43, the direct pressure transmission structure 5 is provided with a track, and the ball 43 on the adjustable pressure transmission structure 4 moves along the track.

[0074] In this embodiment, the electric sheet 221 is provided with a switch rebound member 7, which is connected to the upper surface of the electric sheet 221 through a spring member 8. The switch rebound member 7 is used to limit the position of the ejector pin 11.

[0075] The working principle of this invention is as follows: When the machine starts working, the jack 1 is connected to the pressure-bearing structure 2. The pressure sensor senses the pressure, and the repulsive force generated by the clamping coil 32 on the clamping structure 3 disappears, allowing the clamping structure 3 to clamp onto the tube segment. Jack 1 applies pressure to the pressure-bearing structure 2, with a spring 12 fixed between them. As the pressure from jack 1 increases, the spring 12 is compressed more, causing the pins 11 on jack 1 to move the electrode 221 downwards, changing the polarity of the current in the coil 225. This alters the direction of the circuit, transforming the attraction circuit into a repulsion circuit. Simultaneously, the number of turns in the coil 225 increases with the compression of the spring 12, increasing the repulsive force between the coil 225 and the permanent magnet. This further increases the distance the adjustable pressure transmission structure 4 can move, evenly distributing the pressure from jack 1 onto the pressure-bearing structure 2. The pressure is then transmitted through the pressure-bearing structure 2 to the fixed pressure transmission shaft and the adjustable pressure transmission structure 4. Adjusting the relative distance between the adjustable pressure transmission structure 4 and the fixed pressure transmission shaft achieves uniform pressure transmission. The pressure is then transferred to the rubber pad 6, applying uniform pressure to the sidewall of the pipe segment. After construction is completed, the pressure of jack 1 disappears, the circuit will spring to the attraction circuit, and under the attraction of permanent magnet and washer 225, the adjustable pressure transmission structure 4 will close, the adjustable pressure transmission structure 4 will return to its original position, and the number of turns of the coil connected to it will also return to its original position.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A contact device for a connecting channel segment, comprising a jack (1), characterized in that, The contact device further includes a pressure-bearing structure (2), an adjustable pressure-transmitting structure (4), and a direct pressure-transmitting structure (5). The direct pressure-transmitting structure (5) is attached to the side of the tube segment. The adjustable pressure-transmitting structure (4) is placed on the side of the direct pressure-transmitting structure (5) away from the tube segment, and the adjustable pressure-transmitting structure (4) is slidably connected to the direct pressure-transmitting structure (5). The pressure-bearing structure (2) is placed on the side of the adjustable pressure-transmitting structure (4) away from the direct pressure-transmitting structure (5). The pressure-bearing structure (2) is connected to the direct pressure-transmitting structure (5) via a pressure-transmitting shaft. The pressure shaft passes through the adjustable pressure transmission structure (4), the jack (1) is placed on the pressure-bearing structure (2), the direct pressure transmission structure (5) is provided with a clamping structure (3), the clamping structure (3) is used to connect the contact device and the tube segment, the pressure-bearing structure (2) is provided with a magnetic system (21), the magnetic system (21) cooperates with the permanent magnet (42) on the adjustable pressure transmission structure (4) to make the adjustable pressure transmission structure (4) move closer or further away from each other, and the movement distance of the adjustable pressure transmission structure (4) is proportional to the thrust of the jack (1).

2. The contact device for a connecting channel segment according to claim 1, characterized in that, The magnetic system (21) includes a control circuit and a magnetic structure (22) connected to the control circuit. The adjustable pressure transmission structure (4) is provided with a groove (41). The permanent magnet (42) is placed at both ends in the groove (41). The magnetic end of the magnetic structure (22) is placed in the groove (41) and attracts or repels the permanent magnet (42).

3. The contact device for a connecting channel segment according to claim 2, characterized in that, The control circuit includes an attraction circuit and a repulsion circuit placed above the attraction circuit. When the jack (1) is not in operation, the magnetic structure (22) is connected to the attraction circuit to adjust the adjustable pressure transmission structure (4) to move closer to each other. When the jack (1) is in operation, the jack (1) moves downward, and the magnetic structure (22) is connected to the repulsion circuit to adjust the adjustable pressure transmission structure (4) to repel each other.

4. The contact device for a connecting channel segment according to claim 3, characterized in that, The magnetic structure (22) includes an electric sheet (221), a connecting plate (223) placed below the electric sheet (221), an elastic element (222) placed between the electric sheet (221) and the connecting plate (223), a connecting rod (224) placed below the connecting plate (223), and a coil (225). The connecting rod (224) is hinged to the connecting plate (223), and the connecting rod (224) slides on the coil (225). When the connecting plate (223) is subjected to a downward force, the connecting rod (224) moves along the length direction of the coil (225), and the connecting rods (224) move away from each other. The coil (225) is placed in the groove (41).

5. The contact device for a connecting channel segment according to claim 4, characterized in that, When the jack (1) is not in operation, the electric piece (221) is connected to the attraction circuit to adjust the adjustable pressure transmission structure (4) to move closer to each other. When the jack (1) is in operation, the electric piece (221) moves downward to connect with the repulsion circuit to adjust the adjustable pressure transmission structure (4) to repel each other. During the downward movement of the jack (1), the connecting rod (224) moves along the coil to both ends. The more turns of the coil (225) connected to the repulsion circuit, the stronger the magnetism.

6. A contact device for a connecting channel segment according to any one of claims 1-5, characterized in that, A spring (12) is provided at the connection between the jack (1) and the pressure-bearing structure (2). A pin (11) is provided on the outer periphery of the jack (1) to cooperate with the magnetic system (21). When the jack (1) is not working, the magnetic system (21) cooperates with the permanent magnet (42) on the adjustable pressure transmission structure (4) to make the adjustable pressure transmission structure (4) close to each other. When the jack (1) is working, the pin (11) moves downward and the magnetic system (21) cooperates with the permanent magnet (42) on the adjustable pressure transmission structure (4) to make the adjustable pressure transmission structure (4) repel each other.

7. A contact device for a connecting channel segment according to any one of claims 1-5, characterized in that, The clamping structure (3) includes a clamping member (31), a clamping coil (32), and a clamping spring (33). The clamping member (31) is placed on both sides of the direct pressure transmission structure (5) and is hinged to the direct pressure transmission structure (5). The clamping coil (32) is placed on the side of the clamping member (31) close to the direct pressure transmission structure (5). The clamping spring (33) is placed between the direct pressure transmission structure (5) and the clamping member (31).

8. The contact device for a connecting channel segment according to claim 7, characterized in that, The direct pressure transmission structure (5) is provided with a pressure sensor on the side that contacts the tube segment. The pressure sensor is electrically connected to the clamping coil (32) through a controller. When the pressure sensor senses pressure, the controller controls the clamping coil (32) to be de-energized. The clamping spring (33) causes the clamping coils (32) to come close to each other and clamp onto the tube segment.

9. A contact device for a connecting channel segment according to any one of claims 1-5, characterized in that, The direct pressure transmission structure (5) is fan-shaped, and a rubber pad layer (6) is provided on the side of the direct pressure transmission structure (5) that contacts the tube segment.

10. A contact device for a connecting channel segment according to any one of claims 1-5, characterized in that, The adjustable pressure transmission structure (4) is provided with a ball (43), and the direct pressure transmission structure (5) is provided with a track. The ball (43) on the adjustable pressure transmission structure (4) moves along the track.

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