A power cable laying device for tunnel construction

Abstract

The present invention relates to the technical field of cable laying, and in particular to a power cable laying device for tunnel construction. It comprises: a base; a conveying member, which is arranged on the base; a servo motor, which is fixedly connected to the base, the base is fixedly connected with a first elastic push rod, the output shaft of the servo motor is spline-connected with a sliding sleeve, the sliding sleeve is fixedly connected with a docking block, the docking block is docked with the transmission shaft of the conveying member, and a first elastic element is arranged between the output shaft of the servo motor and the sliding sleeve. The present invention automatically cuts off the docking between the servo motor and the conveying member according to the tightness of the cable, suspends the conveying of the cable by the device, allows the external unwinding mechanism to continue to release the cable, and starts the conveying of the cable again after the cable is in a soft state, so as to avoid the cable between the unwinding mechanism and the device from being stretched due to the conveying force, thereby causing damage to the cable.

Description

Technical Field

[0001] The invention relates to the technical field of cable laying, and in particular to a power cable laying device for tunnel construction. Background Art

[0002] Cable laying refers to the process of placing and fixing cables to the required position according to a certain route and method to achieve functions such as power transmission and signal transmission. Cable laying is divided into direct burial laying, overhead laying and tunnel laying and other scenarios. The laying of tunnel cables is mainly used to provide power supply for lighting, ventilation, monitoring, emergency equipment, traffic signal systems, etc. in tunnels. When laying tunnel cables, it is mainly divided into cable transportation and placement, cable traction laying and cable fixation. When traction laying of cables, it is necessary to release the cables on the winding mechanism and convey the cables by the pulling equipment at the same time. However, since the winding mechanism is entangled with a large amount of cables and has a large mass, after long-term use, its internal transmission mechanism is severely worn, resulting in the actual speed being lower than the set speed, and then causing the speed of the unwinding mechanism releasing the cable to be lower than the speed of the pulling equipment conveying the cable. If this state is always maintained for cable transportation, the cable between the unwinding mechanism and the device will be stretched by the traction force of the pulling equipment, causing damage to the cable. Summary of the invention

[0003] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides a power cable laying device for tunnel construction.

[0004] The technical solution is: a power cable laying device for tunnel construction, comprising: a base; a conveying member, arranged on the base, the conveying member is used to drive the cable to move; a servo motor, fixedly connected to the base, the base is fixedly connected with a first elastic push rod, the output shaft of the servo motor is splined with a sliding sleeve, the telescopic end of the first elastic push rod is fitted with the sliding sleeve, the sliding sleeve is fixedly connected with a docking block, the docking block is docked with the transmission shaft of the conveying member, and a first elastic element is arranged between the output shaft of the servo motor and the sliding sleeve; a detection component, arranged on the base, is used to detect the tightness of the conveying cable.

[0005] As a further preferred scheme, the detection component includes: a sliding frame, slidably connected to the base, the sliding frame is hinged with a detection plate, the detection plate is fixedly connected with a gear, and a second elastic element is arranged between the gear and the sliding frame; a second elastic push rod, fixedly connected to the sliding frame, the telescopic end of the second elastic push rod is fixedly connected to a rack frame, the rack frame is meshed with the gear, the fixed part of the second elastic push rod is fixedly connected to the fixed part of the first elastic push rod and is connected with a flexible tube; a stabilizing component is arranged on the base, and is used to increase the friction between the sliding frame and the base.

[0006] As a further preferred solution, the cross-sectional area of ​​the first elastic push rod fixing portion is smaller than the cross-sectional area of ​​the second elastic push rod fixing portion.

[0007] As a further preferred solution, the stabilizing assembly includes: a serrated rod fixedly connected to the base; a clamping shaft slidably connected to the sliding frame, a third elastic element is provided between the clamping shaft and the sliding frame, and the serrated rod is limitedly matched with the clamping shaft.

[0008] As a further preferred scheme, it also includes: a locking component, which is arranged on the base and is used to limit the sliding sleeve, and the locking component includes: a first limiting frame, a connecting piece is fixedly connected to the base, and a connecting piece is slidably connected to the base, the first limiting frame is slidably connected to the sliding sleeve for limiting position, and the connecting piece on the base is slidably connected to a second limiting frame, the first limiting frame and the second limiting frame are limited in position, and a fourth elastic element is arranged between the second limiting frame and the connecting piece on the base; a reset component, which is arranged on the base, and the reset component is used to make the second limiting frame release the limiting cooperation with the first limiting frame.

[0009] As a further preferred scheme, the reset assembly includes: a docking ring, a connecting piece fixedly connected to the base, a connecting piece rotatably connected to the base, the docking ring rotatably cooperates with the output shaft of the servo motor; an extrusion disk rotatably connected to the base, the extrusion disk is extrusion-fitted with the second limit frame; a transmission adjustment assembly is arranged on the base, and the transmission adjustment assembly is used to change the transmission ratio between the docking ring and the extrusion disk.

[0010] As a further preferred solution, the docking ring is an electromagnetic ring, a reset button is fixedly connected to the base, the reset button is squeezed and fitted with the second limit frame, and the reset button is electrically connected to the docking ring.

[0011] As a further preferred embodiment, the transmission adjustment assembly includes: two rotating sleeves, one of which is rotatably connected to the base and fits with the docking ring, and the other is fixedly connected to the extrusion disk, the two rotating sleeves are symmetrically distributed around the center, the base is slidably connected to the adjustment disk through a connecting piece, and the two rotating sleeves are both fit with the adjustment disk.

[0012] As a further preferred solution, the elastic force of the second elastic element is greater than the sum of the elastic forces of the first elastic push rod, the first elastic element, the second elastic push rod and the fourth elastic element.

[0013] As a further preferred solution, the elastic force of the second elastic element is greater than the sum of the elastic forces of the first elastic push rod, the first elastic element, the second elastic push rod and the fourth elastic element.

[0014] The present invention has the following advantages: 1. By detecting the tightness of the cable between the device and the unwinding mechanism, the connection between the servo motor and the conveying member is automatically cut off, the conveying of the cable by the device is suspended, and the external unwinding mechanism continues to release the cable, so that the cable is in a loose state and the cable conveying is restarted, thereby preventing the cable between the unwinding mechanism and the device from being stretched due to the conveying force and causing damage to the cable.

[0015] 2. The cooperation between the sawtooth rod and the clamping shaft increases the stability of the sliding frame and the base, so as to prevent the sliding frame from moving when the detection plate is subjected to the force of the cable, thereby affecting the normal operation of the device. At the same time, the detection plate can be recovered to the bottom of the base, reducing the space occupancy rate of the detection plate, making it easier for the staff to load, unload and store the device.

[0016] 3. By limiting the first limit frame with the second limit frame, the reset time of the sliding sleeve is extended, the suspension time of the cable transportation of the device is increased, and the length of the accumulated cable released by the external unwinding mechanism is increased, the transportation time of the device is increased, the docking frequency between the docking block on the sliding sleeve and the conveying member is reduced, and the service life is extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the sliding frame and the sliding sleeve of the present invention;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the sliding sleeve and the docking block of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the rack frame and the sawtooth rod of the present invention;

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the clamping shaft and the third elastic element of the present invention;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the first limiting frame and the second limiting frame of the present invention;

[0023] Figure 7 It is a schematic diagram of the three-dimensional structure of the extrusion disk and the reset button of the present invention.

[0024] Wherein: 1-base, 2-conveying member, 3-servo motor, 4-first elastic push rod, 5-sliding sleeve, 6-docking block, 7-first elastic element, 201-sliding frame, 202-detection plate, 203-gear, 204-second elastic element, 205-second elastic push rod, 206-rack frame, 207-sawtooth rod, 208-clamping shaft, 209-third elastic element, 301-first limiting frame, 302-second limiting frame, 303-fourth elastic element, 304-docking ring, 305-extrusion disk, 306-reset button, 307-rotating sleeve, 308-adjusting disk. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiment is only one of the better specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention without making any creative work should be covered within the protection scope of the present invention.

[0026] When the cable is being pulled and laid, it is necessary to release the cable from the reeling mechanism and transport it by the pulling equipment. However, since a large amount of cable is wound around the reeling mechanism, its mass is large. After long-term use, the internal transmission mechanism is severely worn, resulting in the actual release speed being lower than the set speed. If this state is always maintained for cable transportation, the cable between the unwinding mechanism and the device will be stretched due to the traction force of the pulling equipment, causing damage to the cable.

[0027] Embodiment 1: A power cable laying device for tunnel construction, such as Figure 1-Figure 3As shown, it includes: a base 1; a conveying member 2, which is arranged on the base 1 and is used to drive the cable to move; a servo motor 3, which is fixedly connected to the base 1, and the base 1 is fixedly connected with a first elastic push rod 4, the output shaft of the servo motor 3 is splined with a sliding sleeve 5, the telescopic end of the first elastic push rod 4 is in contact with the sliding sleeve 5, and the sliding sleeve 5 is fixedly connected with a docking block 6, which is docked with the transmission shaft of the conveying member 2, and a first elastic element 7 is arranged between the output shaft of the servo motor 3 and the sliding sleeve 5; a detection component, which is arranged on the base 1 and is used to detect the tightness of the conveying cable.

[0028] In the above scheme, the base 1 is a high-strength steel structure, which improves the structural strength and has a certain weight, thereby improving the stability of the device. The conveying member 2 is composed of four sprockets and two chains, and rubber blocks evenly arranged on the chains are used to contact and convey the cable. The servo motor 3 can be one or two according to actual conditions. The fixed part of the first elastic push rod 4 is filled with hydraulic oil. The sliding sleeve 5 slides along the output shaft of the servo motor 3 to dock or separate the docking block 6 from the input shaft of any sprocket on the conveying member 2, thereby controlling the conveying of the cable by the device, and starting the cable conveying again after the cable is in a loose state, thereby preventing the cable between the unwinding mechanism and the device from being stretched due to the conveying force and causing damage to the cable. The first elastic element 7 is a spring, and the first elastic element 7 is used to drive the sliding sleeve 5 to reset.

[0029] like Figure 1-Figure 4 As shown, the detection component includes: a sliding frame 201, which is slidably connected to the base 1, the sliding frame 201 is hinged with a detection plate 202, the detection plate 202 is fixedly connected to a gear 203, and a second elastic element 204 is arranged between the gear 203 and the sliding frame 201; a second elastic push rod 205, which is fixedly connected to the sliding frame 201, and the telescopic end of the second elastic push rod 205 is fixedly connected to a rack frame 206, the rack frame 206 is meshed with the gear 203, and the fixed part of the second elastic push rod 205 is fixedly connected to the fixed part of the first elastic push rod 4 and is connected by a flexible tube; a stabilizing component, which is arranged on the base 1, and is used to increase the friction between the sliding frame 201 and the base 1; the cross-sectional area of ​​the fixed part of the first elastic push rod 4 is smaller than the cross-sectional area of ​​the fixed part of the second elastic push rod 205.

[0030] In the above scheme, one end of the detection plate 202 away from the sliding frame 201 is rotatably connected to a roller for reducing the friction between the detection plate 202 and the cable. The second elastic element 204 is a torsion spring or a spring, and the initial state is a power storage state, which is used to make the detection plate 202 move in contact with the cable. The fixed part of the second elastic push rod 205 is filled with hydraulic oil, and the flexible tube is also filled with hydraulic oil, and the flexible tube has enough margin to adapt to the position change of the second elastic push rod 205; the first elastic push rod 4 can be one or two according to the setting. The cross-sectional area of ​​the fixed part of the second elastic push rod 205 is larger than the sum of the cross-sectional areas of all the first elastic push rods 4, thereby expanding the sliding length of the telescopic end of the first elastic push rod 4 and making the sliding length of the telescopic end of the first elastic push rod 4 larger than the sliding length of the telescopic end of the second elastic push rod 205, so that the telescopic end of the first elastic push rod 4 can quickly push the docking block 6 to separate from the conveying member 2 through the sliding sleeve 5, and at the same time, the detection plate 202 can be recovered to the bottom of the base 1, thereby reducing the space occupancy rate of the detection plate 202 and facilitating the staff to carry out unloading and storage of the device.

[0031] like Figure 1-Figure 4 As shown, the stabilizing assembly includes: a sawtooth rod 207, fixedly connected to the base 1; a clamping shaft 208, slidably connected to the sliding frame 201, a third elastic element 209 is arranged between the clamping shaft 208 and the sliding frame 201, and the sawtooth rod 207 and the clamping shaft 208 are limitedly matched.

[0032] In the above scheme, the card shaft 208 is completely in fit with the saw teeth of the sawtooth rod 207, which is used to limit the autonomous sliding of the sliding frame 201, so as to prevent the detection plate 202 from moving when the cable force is applied, thereby affecting the normal operation of the device. The third elastic element 209 is a spring, and the third elastic element 209 is used to drive the card shaft 208 to reset.

[0033] When it is necessary to lay cables in the tunnel, the staff will place the cables to be transported in the conveying member 2. There is a certain distance between this device and the unwinding mechanism. The cables are placed on the ground in this interval. When the cables enter the conveying member 2, there is a height difference between the cables and the cables on the ground, that is, the cables present a certain angle with the ground. Then the staff pulls the sliding frame 201 to make the sliding frame 201 drive the detection plate 202 to slide outward until the detection plate 202 contacts the cable, so that the detection plate 202 is parallel to the ground. At this time, the cable limits the detection plate 202, so that the second elastic element 204 cannot drive the detection plate 202 to deflect upward, and the preparation work is completed.

[0034] When the preparation work is completed, the external cable unwinding mechanism is turned on to release the cable, and the servo motor 3 is turned on at the same time. The output shaft of the servo motor 3 drives the docking block 6 to rotate through the sliding sleeve 5, so that the docking block 6 drives the adjacent sprocket to rotate through the transmission shaft, and the sprocket drives the rubber block to rotate through the chain and conveys the cable. This continues until the cable conveying is completed, and then the servo motor 3 is turned off, and the sliding frame 201 is retracted to the initial state, and then the detection plate 202 is recovered to the bottom of the base 1, thereby reducing the space occupancy rate of the detection plate 202 and facilitating the staff to load and store the device.

[0035] During the cable transportation process, when the speed at which the unwinding mechanism releases the cable is lower than the transportation speed of the device, the cable is first separated from the ground by the transportation force, that is, the cable gradually rises. At this time, the second elastic element 204 drives the detection plate 202 to deflect upward, and the detection plate 202 drives the gear 203 to rotate. The gear 203 drives the telescopic end of the second elastic push rod 205 to extend outward through the rack 206. At the same time, the hydraulic oil in the fixed part of the second elastic push rod 205 enters the fixed part of the first elastic push rod 4 along the flexible tube. The hydraulic oil in the fixed part of the first elastic push rod 4 pushes its telescopic end to retract inward. At this time, the telescopic end of the first elastic push rod 4 drives the sliding sleeve 5 to slide downward along the output shaft of the servo motor 3, and the first elastic element 7 is compressed, until the sliding sleeve 5 drives the docking block thereon. 6 is separated from the conveying member 2, so that the servo motor 3 cannot drive the conveying member 2 to continue to convey the cable, that is, the device suspends the conveying of the cable. At this time, the external unwinding mechanism continues to release the cable, so that the lifted cable gradually falls to the ground again. At this time, the cable is pressed down to drive the detection plate 202 to deflect downward, so that the second elastic element 204 accumulates force, and at the same time, the gear 203 drives the telescopic end of the second elastic push rod 205 to reset through the rack rack 206. At the same time, the hydraulic oil in the fixed part of the first elastic push rod 4 flows back to the fixed part of the second elastic push rod 205, so that the telescopic end of the first elastic push rod 4 is reset. At the same time, the first elastic element 7 is reset to drive the sliding sleeve 5 to reset, so that the docking block 6 is docked with the conveying member 2, and the cable continues to be conveyed. When the cable is separated from the ground again, the above steps are repeated.

[0036] When the staff pushes the sliding frame 201, the sliding frame 201 drives the card shaft 208 thereon to move synchronously, so that the card shaft 208 squeezes the sawtooth rod 207. At this time, the third elastic element 209 is compressed, and this continues until the sliding frame 201 slides to the desired position. At this time, the third elastic element 209 resets and drives the card shaft 208 to reset synchronously, so that the card shaft 208 is stuck in the sawtooth rod 207. The cooperation between the sawtooth rod 207 and the card shaft 208 increases the stability of the sliding frame 201 and the base 1, thereby preventing the detection plate 202 from moving when subjected to the force of the cable, thereby affecting the normal operation of the device.

[0037] Embodiment 2: Based on embodiment 1, Figure 6 and Figure 7 As shown, it also includes: a positioning component, which is arranged on the base 1 and is used to limit the sliding sleeve 5. The positioning component includes: a first limiting frame 301, a connecting piece is fixedly connected to the base 1, and is slidably connected to the connecting piece on the base 1. The first limiting frame 301 is slidably connected to the sliding sleeve 5 for limiting position. The connecting piece on the base 1 is slidably connected to the second limiting frame 302. The first limiting frame 301 and the second limiting frame 302 are limited in position cooperation. A fourth elastic element 303 is arranged between the second limiting frame 302 and the connecting piece on the base 1; a reset component, which is arranged on the base 1, and the reset component is used to make the second limiting frame 302 release the limiting cooperation with the first limiting frame 301.

[0038] In the above scheme, a wedge block is provided on the first limit frame 301, and a wedge block cooperating with the wedge block on the first limit frame 301 is provided on the second limit frame 302, so that the second limit frame 302 locks the sliding sleeve 5 through the first limit frame 301, thereby extending the reset time of the sliding sleeve 5, and increasing the pause time of the cable transportation by the device, thereby increasing the length of the cable accumulation part released by the external unwinding mechanism, increasing the transportation time of the device, reducing the docking frequency between the docking block 6 on the sliding sleeve 5 and the conveying member 2, extending the service life, and enabling the telescopic end of the first elastic push rod 4 to be reset first. The fourth elastic element 303 is a spring, and the fourth elastic element 303 is used to drive the second limit frame 302 to reset.

[0039] like Figure 6 and Figure 7 As shown, the reset component includes: a docking ring 304, a connecting piece is fixedly connected to the base 1, the connecting piece is rotatably connected to the base 1, and the docking ring 304 is rotatably matched with the output shaft of the servo motor 3; a pressing plate 305 is rotatably connected to the base 1, and the pressing plate 305 is pressed and matched with the second limit frame 302; a transmission adjustment component is arranged on the base 1, and the transmission adjustment component is used to change the transmission ratio between the docking ring 304 and the pressing plate 305; the docking ring 304 is an electromagnetic ring, and a reset button 306 is fixedly connected to the base 1, and the reset button 306 is pressed and matched with the second limit frame 302, and the reset button 306 is electrically connected to the docking ring 304; the fitting surface between the docking ring 304 and the connecting piece on the base 1 is a rough surface, which is used to increase the friction between the docking ring 304 and the base 1.

[0040] In the above scheme, the center of the docking ring 304 coincides with the center of the output shaft of the servo motor 3, so that the servo motor 3 drives the docking ring 304 to rotate synchronously, and the extrusion disk 305 is composed of a circular disk and a triangular block, which is used to make the extrusion disk 305 rotate 360° and push the second limit frame 302 once, and the initial position of the triangular block of the extrusion disk 305 is in contact with the second limit frame 302, so that the extrusion disk 305 squeezes the second limit frame 302 after rotating 360°, and the reset button 306 returns to the initial position each time it is pressed, and the reset button 306 is a stroke after being pressed to the bottom and reset to the initial state, and completing a stroke realizes the magnetic opening or closing of the docking ring 304, such as the opening button of the power strip; the friction between the docking ring 304 and the base 1 is to prevent the output shaft of the servo motor 3 from driving the docking ring 304 to rotate normally, thereby causing the docking ring 304 to be misaligned, thereby ensuring the normal operation of the device.

[0041] like Figure 6 and Figure 7 As shown, the transmission adjustment component includes: a rotating sleeve 307, which has two, one of which is rotatably connected to the base 1 and fits with the docking ring 304, and the other is fixedly connected to the extrusion disk 305, the two rotating sleeves 307 are symmetrically distributed around the center, the base 1 is slidably connected to the adjustment disk 308 through a connecting piece, and the two rotating sleeves 307 are both fitted with the adjustment disk 308; the elastic force of the second elastic element 204 is greater than the sum of the elastic forces of the first elastic push rod 4, the first elastic element 7, the second elastic push rod 205 and the fourth elastic element 303.

[0042] In the above scheme, the rotating sleeve 307 is a truncated cone structure, and the end of the rotating sleeve 307 with a smaller diameter close to the docking ring 304 is located on the lower side, and the other rotating sleeve 307 is arranged oppositely. The adjusting disk 308 is located between the two rotating sleeves 307, and is used to steplessly adjust the transmission ratio between the output shaft of the servo motor 3 and the extrusion disk 305, so as to change the length of the cable released by the external unwinding mechanism every time the extrusion disk 305 rotates 360°, and the adjusting disk 308 is provided with a locking device, such as a hole-shaft fit and an insert fit to lock the height of the adjusting disk 308, and the second elastic element 204 is used to overcome the elastic force of the first elastic push rod 4, the first elastic element 7, the second elastic push rod 205 and the fourth elastic element 303 to drive the detection plate 202 to deflect.

[0043] The wear of the internal transmission system of the unwinding mechanism is permanent damage. During the cable transportation process, the speed at which the unwinding mechanism releases the cable is always lower than the speed at which the conveying member 2 conveys the cable. When the sliding sleeve 5 slides downward along the output shaft of the servo motor 3, the sliding sleeve 5 drives the first limiting frame 301 to move downward synchronously until the first limiting frame 301 contacts and squeezes the second limiting frame 302. At this time, the second limiting frame 302 slides along the connecting piece of the base 1 under the extrusion force, and at the same time, the fourth elastic element 303 is compressed, and the second limiting frame 302 squeezes the reset button 306. After the first limiting frame 301 bypasses the second limiting frame 302, the docking block 6 on the sliding sleeve 5 is separated from the conveying member 2, and the cable transportation of the device is suspended. At the same time, the fourth elastic element 303 is reset to drive the second limiting frame 302 to reset. At this time, the second limiting frame 302 limits the first limiting frame 301, and the external unwinding mechanism begins to supplement the cable between the device and the device, so that the cable gradually falls to the ground. At this time, the telescopic end of the first elastic push rod 4 begins to reset.

[0044] When the telescopic end of the first elastic push rod 4 is gradually reset to the initial state, the second limit frame 302 releases the pressure on the reset button 306, so that the reset button 306 completes a stroke. At this time, the reset button 306 opens the docking ring 304, so that the docking ring 304 has magnetism and is mutually adsorbed with the output shaft of the servo motor 3. The output shaft of the servo motor 3 drives the docking ring 304 to rotate synchronously, so that the docking ring 304 drives the extrusion disk 305 to rotate through the two rotating sleeves 307 and the adjusting disk 308, so that the extrusion disk 305 rotates 304. After 60°, the second limiting frame 302 is pushed (during the rotation of the squeezing plate 305, the telescopic end of the first elastic push rod 4 has already been reset, that is, the cable has fallen to the initial state, and as the squeezing plate 305 rotates, part of the cable is gradually accumulated), the second limiting frame 302 slides along the connecting piece, and the fourth elastic element 303 is compressed. At the same time, the second limiting frame 302 presses the reset button 306 again. When the squeezing plate 305 bypasses the second limiting frame 302, the fourth elastic element 303 drives the second limiting frame 302 to reset. At this time, the second limiting frame 302 releases the pressing of the reset button 306, and the reset button 306 completes a stroke again, so that the reset button 306 closes the docking ring 304. At this time, the docking ring 304 is not magnetic, and the output shaft of the servo motor 3 cannot drive the docking ring 304 to continue to rotate. At the same time, the second limiting frame 302 releases the limit on the first limiting frame 301, so that the first elastic element 7 drives the sliding sleeve 5 to reset, and the sliding sleeve 5 drives the docking block 6 to dock with the conveying member 2. At the same time, the sliding sleeve 5 is attached to the telescopic end of the first elastic push rod 4. The device continues to transport the cable until the accumulated cable is consumed. After the cable moves upward again and separates from the ground, the above situation occurs again, and the above steps are repeated. By limiting the first limit frame 301 with the second limit frame 302, the reset time of the sliding sleeve 5 is extended, and the pause time of the cable transportation by the device is increased, thereby increasing the length of the accumulated cable released by the external unwinding mechanism, increasing the transportation time of the device, reducing the docking frequency between the docking block 6 on the sliding sleeve 5 and the conveying member 2, and extending the service life.

[0045] Before the cable starts to be transported, the staff changes the contact position between the adjusting disk 308 and the two rotating sleeves 307 according to the conveying speed of the cable, and adjusts the transmission ratio of the two rotating sleeves 307, that is, adjusts the transmission ratio of the output shaft of the servo motor 3 and the extrusion disk 305. For example, the adjusting disk 308 is made to slide downward. At this time, the transmission ratio of the rotating sleeve 307 close to the docking ring 304 to the other rotating sleeve 307 is increased, that is, the output shaft of the servo motor 3 needs to rotate more than one circle to drive the extrusion disk 305 to rotate one circle, thereby delaying the time for the extrusion disk 305 to push the second limit frame 302, that is, increasing the length of the cable released by the external unwinding mechanism when the extrusion disk 305 rotates 360°.

[0046] The technical principles of the embodiments of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the embodiments of the present invention and cannot be interpreted in any way as limiting the protection scope of the embodiments of the present invention. Based on the explanations herein, those skilled in the art can think of other specific implementation methods of the embodiments of the present invention without creative work, and these methods will fall within the protection scope of the embodiments of the present invention.

Claims

1. A power cable laying device for tunnel construction, characterized in that: Included are: Base (1); A conveying member (2) is arranged on the base (1), and the conveying member (2) is used to drive the cable to move; A servo motor (3) is fixedly connected to the base (1); the base (1) is fixedly connected to a first elastic push rod (4); the output shaft of the servo motor (3) is spline-connected to a sliding sleeve (5); the telescopic end of the first elastic push rod (4) is in contact with the sliding sleeve (5); a docking block (6) is fixedly connected to the sliding sleeve (5); the docking block (6) is docked with the transmission shaft of the conveying member (2); and a first elastic element (7) is provided between the output shaft of the servo motor (3) and the sliding sleeve (5); A detection component, arranged on the base (1), for detecting the tightness of the transmission cable; The detection component includes: A sliding frame (201) is slidably connected to the base (1); the sliding frame (201) is hingedly connected to a detection plate (202); the detection plate (202) is fixedly connected to a gear (203); and a second elastic element (204) is provided between the gear (203) and the sliding frame (201); A second elastic push rod (205) is fixedly connected to the sliding frame (201); the telescopic end of the second elastic push rod (205) is fixedly connected to a rack frame (206); the rack frame (206) is meshed with the gear (203); a fixed portion of the second elastic push rod (205) is fixedly connected to a fixed portion of the first elastic push rod (4) and is connected via a flexible tube; A stabilizing component is arranged on the base (1) and is used to increase the friction between the sliding frame (201) and the base (1).

2. The power cable laying device for tunnel construction according to claim 1, characterized in that: The cross-sectional area of ​​the fixing portion of the first elastic push rod (4) is smaller than the cross-sectional area of ​​the fixing portion of the second elastic push rod (205).

3. The power cable laying device for tunnel construction according to claim 1, characterized in that: The stabilizing component comprises: A sawtooth rod (207) fixedly connected to the base (1); The clamping shaft (208) is slidably connected to the sliding frame (201), a third elastic element (209) is provided between the clamping shaft (208) and the sliding frame (201), and the sawtooth rod (207) is limitedly matched with the clamping shaft (208).

4. A power cable laying device for tunnel construction according to claim 3, characterized in that: Also included are: A positioning assembly is arranged on the base (1) and is used to limit the position of the sliding sleeve (5), and the positioning assembly comprises: A first limiting frame (301), a connecting piece is fixedly connected to the base (1), and is slidably connected to the connecting piece on the base (1); the first limiting frame (301) is slidably connected to the sliding sleeve (5); the connecting piece on the base (1) is slidably connected to a second limiting frame (302); the first limiting frame (301) and the second limiting frame (302) are limitedly matched; a fourth elastic element (303) is provided between the second limiting frame (302) and the connecting piece on the base (1); A reset component is arranged on the base (1), and is used to enable the second limiting frame (302) to release the limiting cooperation with the first limiting frame (301).

5. A power cable laying device for tunnel construction according to claim 4, characterized in that: The reset component includes: A docking ring (304), the base (1) having a connecting piece fixedly connected thereto, the connecting piece rotatably connected to the base (1), the docking ring (304) rotatably cooperating with an output shaft of the servo motor (3); A pressing plate (305) is rotatably connected to the base (1), and the pressing plate (305) is pressed and matched with the second limiting frame (302); A transmission adjustment component is arranged on the base (1), and is used to change the transmission ratio between the docking ring (304) and the extrusion disk (305).

6. A power cable laying device for tunnel construction according to claim 5, characterized in that: The docking ring (304) is an electromagnetic ring, a reset button (306) is fixedly connected to the base (1), the reset button (306) is squeezed and matched with the second limit frame (302), and the reset button (306) is electrically connected to the docking ring (304).

7. A power cable laying device for tunnel construction according to claim 6, characterized in that: The transmission adjustment component includes: The rotating sleeves (307) are provided with two of them, one of which is rotatably connected to the base (1) and fits with the docking ring (304), and the other is fixedly connected to the extrusion disk (305), the two rotating sleeves (307) are centrally symmetrically distributed, the base (1) is slidably connected to the adjustment disk (308) via a connecting piece, and the two rotating sleeves (307) are both fit with the adjustment disk (308).

8. The power cable laying device for tunnel construction according to claim 4, characterized in that: The elastic force of the second elastic element (204) is greater than the sum of the elastic forces of the first elastic push rod (4), the first elastic element (7), the second elastic push rod (205) and the fourth elastic element (303).

9. The power cable laying device for tunnel construction according to claim 7, characterized in that: The mating surface between the docking ring (304) and the connecting piece on the base (1) is a rough surface, which is used to increase the friction between the docking ring (304) and the base (1).

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