Cable traction device

Abstract

The invention relates to the technical field of cable traction, in particular to a cable traction device which comprises an inserting table and a fixing seat fixedly connected to the bottom end of the inserting table, one end of the inserting table is fixedly connected with a driving motor, the output end of the driving motor is fixedly connected with a winding rotating rod, and the winding rotating rod is rotationally arranged in an inner cavity of the inserting table; an electric push rod is fixedly connected to one end, located on one side of the driving motor, of the inserting table, a sliding connecting plate is fixedly connected to the extending end of the electric push rod, the sliding connecting plate is horizontally arranged in the inserting table in a sliding mode, and a guide ring is fixedly connected to the end, close to the guide ring, of the sliding connecting plate. According to the cable traction device provided by the invention, through the arrangement of the locking mechanism, the situation that the cable body is pulled underwater during fixing due to the impact of water flow, and installation of the cable is affected can be prevented, and when the cable body is pulled to the shore, pre-fixing can be automatically achieved.

Description

[0001] This application is a divisional application of the application filed on September 25, 2024, with application number 202411339943.7 and invention name “A cable traction device”. Technical Field

[0002] The invention relates to the technical field of cable traction, in particular to a cable traction device. Background Art

[0003] The traction of cross-river cables usually requires the use of large drones or helicopters to pull across the air, or the use of ferries to cross the river, and then towing one end of the cross-river cable to the other end of the river. Since some cross-river cables are relatively thick and heavy, these two traction methods have higher requirements for the machines used for crossing the air and crossing the river, and the operating costs are also higher.

[0004] In the prior art, some methods first transport one end of a thin towing rope to the other side of the river by a simple transportation method, and then fix a thicker cross-river cable to the thinner towing rope, and use the thin towing rope to carry the thicker cross-river cable across the river, similar to the "threading a needle" method to transport one end of the cross-river cable to the other side of the river. However, in this method, after the cross-river cable is transported to the shore, it is necessary to manually remove the cross-river cable from the thinner towing rope and then fix the cross-river cable to the shore. The manual disassembly and installation process is relatively slow, and may cause the cross-river cable to slip into the river, resulting in failure of traction. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a cable pulling device.

[0006] The present invention adopts the following technical scheme: a cable traction device, including a plug-in platform and a fixed seat fixed to the bottom end of the plug-in platform, one end of the plug-in platform is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a winding rod, the winding rod is rotatably arranged in the inner cavity of the plug-in platform, one end of the plug-in platform is located on one side of the driving motor and is fixedly connected to an electric push rod, the extended end of the electric push rod is fixedly connected to a sliding connecting plate, the sliding connecting plate is horizontally slidably arranged in the plug-in platform, the end of the sliding connecting plate close to the winding rotating rod is fixedly connected to a guide ring, and a plug-in platform is provided with There is a guide groove, and two inner cavities are connected at both ends of the guide groove. A traction rope is wound on the winding rotating rod, and the traction rope passes through the guide ring. The other end of the traction rope extends from the guide groove to the outside of the plug-in platform. A cable body is provided on the lower side of the traction rope. A connecting frame is clamped and fixed between the cable body and the outside of the traction rope. A connecting platform is fixedly connected to the lower end of a side wall of the plug-in platform close to the cable body. A locking mechanism is provided in the connecting platform. A positioning mechanism is provided at the upper end of a side wall of the plug-in platform close to the cable body. An auxiliary fixing mechanism is provided in the plug-in platform.

[0007] The locking mechanism includes a plug-in rod fixedly connected to the bottom end of the connecting frame, a plug-in slot is provided on the side wall of the connecting platform away from the plug-in platform, a trapezoidal stopper is movably inserted into the lower surface of one end of the plug-in rod close to the plug-in platform, a first spring is fixedly connected between the upper end of the trapezoidal stopper and the plug-in rod, an upper support rod is movably inserted into the upper end of the connecting platform, an insertion hole is provided in the middle part of the upper support rod, a fixed connecting rod is fixedly connected to the bottom end of the upper support rod, and the fixed connecting rod is slidably arranged in the plug-in platform.

[0008] As a further description of the above technical solution: the auxiliary fixing mechanism includes a fixed connecting rod fixedly connected to the bottom end of the upper support rod, the other end of the fixed connecting rod is located in the plug-in platform, and the end of the fixed connecting rod located in the plug-in platform is fixedly connected to a lifting frame, and the lifting frame is slidably arranged in the plug-in platform, and a sliding clamping rod is horizontally slidably arranged at the lower side of the lifting frame located in the plug-in platform, and two sliding clamping rods are provided, and the two sliding clamping rods are arranged opposite to each other, and clamping heads are fixedly connected to the upper sides of the opposite ends of the two sliding clamping rods, and the clamping heads are movably inserted on the inner wall of the inner cavity of the plug-in platform, and a second spring is fixedly connected between the opposite side walls of the lower ends of the two sliding clamping rods.

[0009] As a further description of the above technical solution: the positioning mechanism includes a rotating slide groove opened on a side wall of the plug-in platform close to the cable body, and there are two rotating slide grooves, which are arranged opposite to each other, and a special-shaped extrusion ring block is fixedly connected in the rotating slide groove, and an inclined sliding surface is opened at one end of the special-shaped extrusion ring block close to the cable body, and fixed fan plates are fixedly connected to the opposite sides of the outer wall of the connecting frame, and an arc-shaped top rod is fixedly connected to one end of the fixed fan plate close to the plug-in platform.

[0010] As a further description of the above technical solution: an end of the splicing rod close to the splicing platform and a lower side of an end of the upper support rod close to the cable body are both provided with inclined surfaces.

[0011] As a further description of the above technical solution: the bottom end of the lifting frame and the upper side of the bottom end of the sliding clamping rod are provided with inclined surfaces parallel to each other.

[0012] As a further description of the above technical solution: a plurality of second springs are provided, and the plurality of second springs are arranged at equal intervals.

[0013] As a further description of the above technical solution: the opposite ends of the two clamping heads are both configured to be arc-shaped.

[0014] As a further description of the above technical solution: the inclined sliding surfaces provided on the two special-shaped extrusion ring blocks have the same rotation direction, and the two arc-shaped push rods correspond to the deeper end of each inclined sliding surface respectively.

[0015] The present invention provides a cable pulling device through improvement, which has the following improvements and advantages compared with the prior art:

[0016] First, when the cable body needs to be towed across the river, one end of the cable body and the traction rope are first fixedly connected together through a connecting frame and bolts, and the other end of the traction rope is wound around the winding rod. Then, the plug-in platform and the fixing seat are transferred to the other side by convenient transportation such as a boat, and the fixing seat is fixed on the shore. Then, the drive motor is started, and the traction rope on the winding rod is wound. When the traction rope and the cable body move to the other side, one end of the cable body will move to the inner cavity of the plug-in platform, and the plug-in rod will be inserted into the plug-in slot. Then, the plug-in rod squeezes the bottom end of the upper support rod. , so that the upper support rod moves downward to prevent the upper end of the upper support rod from squeezing the cable body. When the upper support rod slides downward, one end of the plug-in rod will be inserted into the plug-in hole, and then the squeezed trapezoidal stopper will pop up downward first, so that the plug-in rod is clamped in the plug-in hole. Through the setting of the locking mechanism, it can be prevented that the cable body is pulled underwater when fixed due to the impact of the water flow, which affects the installation of the cable. When the cable body is pulled to the shore, it can be automatically pre-fixed without removing the traction rope, which reduces the work intensity of the staff and improves the efficiency of the fixed connection.

[0017] Second, due to the effect of water flow, the position of the plug rod may rotate or swing. When one end of the cable body is close to the plug-in platform, the arc-shaped top rod is inserted into the rotating slide groove. If the angle of the arc-shaped top rod changes, the arc-shaped top rod will be squeezed by the inclined sliding surface on the special-shaped extrusion ring block, so that the arc-shaped top rod, the connecting frame and the plug rod rotate to the initial position. Through the setting of the positioning mechanism, it can ensure that the plug rod can be inserted into the plug-in slot, and it can also prevent the cable body from twisting and causing damage to the cable body;

[0018] Thirdly, when the upper support rod moves downward, the upper support rod drives the fixed link and the lifting frame to move downward, so that the lifting frame squeezes the sliding clamping rod inward, so that the two sliding clamping rods are close to each other, and then the clamping head clamps the cable body located in the plug-in platform. By setting the auxiliary fixing mechanism, while the locking mechanism fixes the cable body and the plug-in platform, the cable body and the plug-in platform can be connected more firmly, and the tension on the locking mechanism can also be shared;

[0019] To sum up, by setting up the locking mechanism, it is possible to prevent the cable body from being pulled underwater when being fixed due to the impact of the water flow, which will affect the installation of the cable. When the cable body is pulled to the shore, it can be automatically pre-fixed without removing the traction rope, which reduces the workload of the staff and improves the efficiency of the fixed connection. By setting up the positioning mechanism, it is possible to ensure that the plug-in rod can be inserted into the plug-in slot, and it is also possible to prevent the cable body from twisting and causing damage to the cable body. By setting up the auxiliary fixing mechanism, while the locking mechanism fixes the cable body and the plug-in platform, the cable body and the plug-in platform can be connected more firmly, and the tension on the locking mechanism can be shared. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further explained below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 A schematic diagram of a cable pulling device provided in an embodiment of the present invention Figure 1 ;

[0022] Figure 2 A schematic diagram of a cable pulling device provided in an embodiment of the present invention Figure 2 ;

[0023] Figure 3 A cross-sectional view of a docking station provided by an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of the auxiliary fixing mechanism provided in an embodiment of the present invention Figure 1 ;

[0025] Figure 5 A schematic diagram of the structure of the auxiliary fixing mechanism provided in an embodiment of the present invention Figure 2 ;

[0026] Figure 6 A schematic diagram of the structure of an arc-shaped ejector rod provided in an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of the structure of a plug-in rod provided in an embodiment of the present invention;

[0028] Figure 8 for Figure 3 The enlarged view of point A in the middle;

[0029] Fig. 9 for Figure 7 Enlarged view of point B in the middle.

[0030] In the figure: 1. docking station; 2. fixing seat; 3. driving motor; 4. electric push rod; 5. cable body; 6. traction rope; 7. docking station; 8. positioning mechanism; 81. rotating slide groove; 82. special-shaped extrusion ring block; 83. fixed fan plate; 84. arc-shaped top rod; 85. inclined sliding surface; 9. locking mechanism; 91. docking rod; 92. docking notch; 93. upper support rod; 94. insertion hole; 95. trapezoidal stopper; 96. first spring; 10. auxiliary fixing mechanism; 101. sliding clamping rod; 102. clamping head; 103. fixed connecting rod; 104. lifting frame; 105. second spring; 11. sliding connecting plate; 12. connecting frame; 13. winding rotating rod; 14. guide groove; 15. guide ring. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below with reference to specific diagrams. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0032] See also Figure 1-Figure 9 The embodiment of the present invention provides a technical solution: a cable traction device, including a plug-in platform 1 and a fixed seat 2 fixed to the bottom end of the plug-in platform 1, one end of the plug-in platform 1 is fixedly connected to a driving motor 3, the output end of the driving motor 3 is fixedly connected to a winding rod 13, the winding rod 13 is rotatably arranged in the inner cavity of the plug-in platform 1, one end of the plug-in platform 1 is located on one side of the driving motor 3 and is fixedly connected to an electric push rod 4, the extended end of the electric push rod 4 is fixedly connected to a sliding connecting plate 11, the sliding connecting plate 11 is horizontally slidably arranged in the plug-in platform 1, the end of the sliding connecting plate 11 close to the winding rod 13 is fixedly connected to a guide ring 15, and the plug-in platform 1 is opened A guide groove 14 is provided, and two inner cavities are connected at both ends of the guide groove 14. A traction rope 6 is wound on the winding rod 13, and the traction rope 6 passes through the guide ring 15. The other end of the traction rope 6 extends from the guide groove 14 to the outside of the plug-in platform 1, and a cable body 5 is provided on the lower side of the traction rope 6. A connecting frame 12 is clamped and fixed on the outside of the cable body 5 and the traction rope 6. A connecting platform 7 is fixedly connected to the lower end of a side wall of the plug-in platform 1 close to the cable body 5, and a locking mechanism 9 is provided in the connecting platform 7. A positioning mechanism 8 is provided at the upper end of a side wall of the plug-in platform 1 close to the cable body 5, and an auxiliary fixing mechanism 10 is provided in the plug-in platform 1.

[0033] The locking mechanism 9 includes a plug-in rod 91 fixedly connected to the bottom end of the connecting frame 12, a plug-in slot 92 is provided on the side wall of the connecting platform 7 away from the plug-in platform 1, a trapezoidal stopper 95 is movably inserted on the lower surface of one end of the plug-in rod 91 close to the plug-in platform 1, a first spring 96 is fixedly connected between the upper end of the trapezoidal stopper 95 and the plug-in rod 91, an upper support rod 93 is movably inserted on the upper end of the connecting platform 7, an insertion hole 94 is provided in the middle of the upper support rod 93, a fixed connecting rod 103 is fixedly connected to the bottom end of the upper support rod 93, the fixed connecting rod 103 is slidably arranged in the plug-in platform 1, and an inclined surface is provided on the lower side of one end of the plug-in rod 91 close to the plug-in platform 1 and one end of the upper support rod 93 close to the cable body 5.

[0034] Specifically, when the cable body 5 needs to be towed across the river, one end of the cable body 5 and the traction rope 6 are first fixedly connected together by the connecting frame 12 and bolts, and the other end of the traction rope 6 is wound around the winding rotating rod 13. Then, the docking station 1 and the fixing seat 2 are transferred to the opposite bank by convenient transportation such as a boat, and the fixing seat 2 is fixed on the bank. Then, the driving motor 3 is started. The rotation of the driving motor 3 will drive the winding rotating rod 13 to rotate, so that the traction rope 6 on the winding rotating rod 13 is wound. Through the reciprocating movement of the electric push rod 4, the traction rope 6 can be evenly wound around the winding rotating rod 13 during winding, so that the traction rope 6 on the opposite side can be moved, and then the cable body 5 is driven by the traction rope 6 to On the other side, when the traction rope 6 is being reeled in, it will be supported by the top groove of the upper support rod 93 to prevent the traction rope 6 from deviating downward. When the traction rope 6 and the cable body 5 move to the other side, one end of the cable body 5 will move to the inner cavity of the docking station 1, and the docking rod 91 will also be inserted into the docking slot 92. Then the docking rod 91 squeezes the bottom end of the upper support rod 93 to make the upper support rod 93 move downward to prevent the upper end of the upper support rod 93 from squeezing the cable body 5. When the upper support rod 93 slides downward, one end of the docking rod 91 will be inserted into the insertion hole 94. Then the squeezed trapezoidal stopper 95 will pop out downward first, so that the docking rod 91 will be clamped in the insertion hole 94 to prevent the cable body 5 from being pulled underwater when fixed due to the impact of water flow.

[0035] In another embodiment provided by the present invention, the auxiliary fixing mechanism 10 includes a fixed connecting rod 103 fixedly connected to the bottom end of the upper support rod 93, the other end of the fixed connecting rod 103 is located in the plug-in platform 1, and one end of the fixed connecting rod 103 located in the plug-in platform 1 is fixedly connected to a lifting frame 104, and the lifting frame 104 is slidably arranged in the plug-in platform 1 up and down, and the lower side of the lifting frame 104 is located in the plug-in platform 1 and is horizontally slidably arranged with a sliding clamping rod 101, and the sliding clamping rod 101 is provided with two, and the two sliding clamping rods 101 The two sliding clamping rods 101 are arranged relative to each other, and clamping heads 102 are fixedly connected to the upper sides of the opposite ends of the two sliding clamping rods 101. The clamping heads 102 are movably inserted into the inner wall of the inner cavity of the docking station 1. A second spring 105 is fixedly connected between the opposite side walls of the lower ends of the two sliding clamping rods 101. The bottom end of the lifting frame 104 and the upper side of the bottom end of the sliding clamping rod 101 are provided with inclined surfaces parallel to each other. A plurality of second springs 105 are provided, and the plurality of second springs 105 are arranged at equal intervals. The opposite ends of the two clamping heads 102 are arranged in an arc shape.

[0036] Specifically, when the upper support rod 93 moves downward, the upper support rod 93 drives the fixed link 103 and the lifting frame 104 to move downward, so that the lifting frame 104 squeezes the sliding clamping rod 101 inward, so that the two sliding clamping rods 101 approach each other, and then the clamping head 102 clamps the cable body 5 located in the docking station 1.

[0037] In another embodiment provided by the present invention, the positioning mechanism 8 includes a rotating slide groove 81 provided on a side wall of the plug-in platform 1 close to the cable body 5. There are two rotating slide grooves 81, and the two rotating slide grooves 81 are arranged opposite to each other. A special-shaped extrusion ring block 82 is fixedly connected in the rotating slide groove 81. The special-shaped extrusion ring block 82 has an inclined sliding surface 85 at one end close to the cable body 5. Fixed fan plates 83 are fixedly connected to the opposite sides of the outer wall of the connecting frame 12. An arc-shaped top rod 84 is fixedly connected to one end of the fixed fan plate 83 close to the plug-in platform 1. The inclined sliding surfaces 85 provided on the two special-shaped extrusion ring blocks 82 have the same rotation direction, and the two arc-shaped top rods 84 respectively correspond to the deeper end of each inclined sliding surface 85.

[0038] Specifically, due to the effect of water flow, the position of the plug-in rod 91 may rotate or swing. When one end of the cable body 5 is close to the plug-in platform 1, the arc-shaped top rod 84 is inserted into the rotating slide groove 81. If the angle of the arc-shaped top rod 84 changes, the shape structure of the special-shaped extrusion ring block 82 is an arc-shaped block, and the end of the special-shaped extrusion ring block 82 close to the arc-shaped top rod 84 is provided with an inclined sliding surface 85. When the arc-shaped top rod 84 collides with the special-shaped extrusion ring block 82, it will be squeezed by the inclined sliding surface 85 on the special-shaped extrusion ring block 82, so that the arc-shaped top rod 84, the connecting frame 12 and the plug-in rod 91 are rotated to the initial position, so as to ensure that the plug-in rod 91 can be inserted into the plug-in slot 92, and the cable body 5 can be prevented from twisting and causing damage to the cable body 5.

[0039] Working principle: when the cable body 5 needs to be towed across the river, first one end of the cable body 5 and the traction rope 6 are fixedly connected together through the connecting frame 12 and bolts, and the other end of the traction rope 6 is wound around the winding rod 13. Then, the docking station 1 and the fixing seat 2 are transferred to the other side by convenient transportation such as a boat, and the fixing seat 2 is fixed on the shore. Then, the driving motor 3 is started. The rotation of the driving motor 3 will drive the winding rod 13 to rotate, so that the traction rope 6 on the winding rod 13 is wound. Through the reciprocating movement of the electric push rod 4, the traction rope 6 can be evenly wound around the winding rod 13 during winding, so that The traction rope 6 on the opposite side can be moved, and then the cable body 5 is driven to the opposite bank by the traction rope 6. When the traction rope 6 is rolled up, it will be supported by the top groove of the upper support rod 93 to prevent the traction rope 6 from deviating downward. When the traction rope 6 and the cable body 5 move to the opposite bank, one end of the cable body 5 will move to the inner cavity of the plug-in platform 1, and the plug-in rod 91 will also be inserted into the plug-in groove 92. Then the plug-in rod 91 squeezes the bottom end of the upper support rod 93, so that the upper support rod 93 moves downward to prevent the upper end of the upper support rod 93 from squeezing the cable body 5. When the upper support rod 93 moves downward, the upper support rod 93 drives the fixing connecting rod 103 and the lifting rod 103 to move downward. The lowering frame 104 moves downward, so that the lifting frame 104 squeezes the sliding clamping rod 101 inward, so that the two sliding clamping rods 101 are close to each other, and then the clamping head 102 clamps the cable body 5 located in the docking station 1. When the upper support rod 93 slides downward, one end of the plug-in rod 91 will be inserted into the plug-in hole 94, and then the squeezed trapezoidal stopper 95 will pop up downward first, so that the plug-in rod 91 is clamped in the plug-in hole 94 to prevent the cable body 5 from being pulled underwater when fixed due to the impact of water flow. Due to the effect of water flow, the position of the plug-in rod 91 may rotate or swing. When one end of the cable body 5 is close to When approaching the docking station 1, the arc-shaped push rod 84 is inserted into the rotating slide groove 81. If the angle of the arc-shaped push rod 84 changes, the shape structure of the special-shaped extrusion ring block 82 is a ring block, and the end of the special-shaped extrusion ring block 82 close to the arc-shaped push rod 84 is provided with an inclined sliding surface 85. When the arc-shaped push rod 84 collides with the special-shaped extrusion ring block 82, it will be squeezed by the inclined sliding surface 85 on the special-shaped extrusion ring block 82, so that the arc-shaped push rod 84, the connecting frame 12 and the plug-in rod 91 are rotated to the initial position, so as to ensure that the plug-in rod 91 can be inserted into the plug-in slot 92, and the cable body 5 can be prevented from twisting and causing damage to the cable body 5.

[0040] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A cable pulling device, comprising a plug-in platform (1) and a fixing seat (2) fixed to the bottom end of the plug-in platform (1), characterized in that: One end of the plug-in platform (1) is fixedly connected to a driving motor (3), an output end of the driving motor (3) is fixedly connected to a winding rod (13), the winding rod (13) is rotatably arranged in the inner cavity of the plug-in platform (1), one end of the plug-in platform (1) is fixedly connected to an electric push rod (4) located on one side of the driving motor (3), the extended end of the electric push rod (4) is fixedly connected to a sliding connecting plate (11), the sliding connecting plate (11) is horizontally slidably arranged in the plug-in platform (1), one end of the sliding connecting plate (11) close to the winding rod (13) is fixedly connected to a guide ring (15), a guide groove (14) is provided in the plug-in platform (1), two inner cavities are connected at both ends of the guide groove (14), the winding rod (13) is rotatably arranged in the inner cavity of the plug-in platform (1), and the electric push rod (4) is fixedly connected to a sliding connecting plate (11). A traction rope (6) is wound around the rotating rod (13), and the traction rope (6) passes through a guide ring (15). The other end of the traction rope (6) extends from a guide groove (14) to the outside of the plug-in platform (1). A cable body (5) is provided on the lower side of the traction rope (6). A connecting frame (12) is clamped and fixed between the cable body (5) and the outside of the traction rope (6). A connecting platform (7) is fixedly connected to the lower end of a side wall of the plug-in platform (1) close to the cable body (5). A locking mechanism (9) is provided in the connecting platform (7). A positioning mechanism (8) is provided at the upper end of a side wall of the plug-in platform (1) close to the cable body (5). An auxiliary fixing mechanism (10) is provided in the plug-in platform (1); The positioning mechanism (8) comprises a rotating slide groove (81) provided on a side wall of the plug-in platform (1) close to the cable body (5), wherein two rotating slide grooves (81) are provided, and the two rotating slide grooves (81) are arranged opposite to each other, and a special-shaped extrusion ring block (82) is fixedly connected in the rotating slide groove (81), and an inclined sliding surface (85) is provided at one end of the special-shaped extrusion ring block (82) close to the cable body (5), and fixed fan plates (83) are fixedly connected on two opposite sides of the outer wall of the connecting frame (12), and an arc-shaped top rod (84) is fixedly connected at one end of the fixed fan plate (83) close to the plug-in platform (1).

2. A cable pulling device according to claim 1, characterized in that: The locking mechanism (9) comprises a plug-in rod (91) fixedly connected to the bottom end of the connecting frame (12); a plug-in slot (92) is provided on the side wall of the connecting platform (7) away from the plug-in platform (1); a trapezoidal stopper (95) is movably inserted in the lower surface of one end of the plug-in rod (91) close to the plug-in platform (1); a first spring (96) is fixedly connected between the upper end of the trapezoidal stopper (95) and the plug-in rod (91); an upper support rod (93) is movably inserted in the upper end of the connecting platform (7); a plug-in hole (94) is provided in the middle of the upper support rod (93); a fixed connecting rod (103) is fixedly connected to the bottom end of the upper support rod (93); and the fixed connecting rod (103) is slidably arranged in the plug-in platform (1) up and down.

3. A cable pulling device according to claim 1, characterized in that: The auxiliary fixing mechanism (10) comprises a fixed connecting rod (103) fixedly connected to the bottom end of the upper support rod (93), the other end of the fixed connecting rod (103) being located in the plug-in platform (1), one end of the fixed connecting rod (103) being located in the plug-in platform (1) being fixedly connected to a lifting frame (104), the lifting frame (104) being slidably arranged in the plug-in platform (1) up and down, the lower side of the lifting frame (104) being located in the plug-in platform (1) and being horizontally slidably arranged with a sliding clamping rod (101), two sliding clamping rods (101) being provided, the two sliding clamping rods (101) being arranged opposite to each other, the upper sides of the opposite ends of the two sliding clamping rods (101) being fixedly connected to a clamping head (102), the clamping head (102) being movably inserted into the inner wall of the inner cavity of the plug-in platform (1), and a second spring (105) being fixedly connected between the opposite side walls at the lower ends of the two sliding clamping rods (101).

4. A cable pulling device according to claim 2, characterized in that: An end of the plug-in rod (91) close to the plug-in platform (1) and an end of the upper support rod (93) close to the cable body (5) are both provided with inclined surfaces on their lower sides.

5. A cable pulling device according to claim 3, characterized in that: The bottom end of the lifting frame (104) and the upper side of the bottom end of the sliding clamping rod (101) are provided with inclined surfaces parallel to each other.

6. A cable pulling device according to claim 3, characterized in that: A plurality of the second springs (105) are provided, and the plurality of the second springs (105) are arranged at equal intervals.

7. A cable pulling device according to claim 3, characterized in that: The opposite ends of the two clamping heads (102) are both arranged in an arc shape.

8. A cable pulling device according to claim 1, characterized in that: The inclined sliding surfaces (85) provided on the two special-shaped extrusion ring blocks (82) have the same rotation direction, and the two arc-shaped push rods (84) respectively correspond to the deeper end of each inclined sliding surface (85).

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