Cable laying trolley

Abstract

The present invention proposes a cable laying trolley, which belongs to the technical field of tunnel cable construction. The cable laying trolley includes a guide plate, the rear side of the guide plate is provided with an annular guide groove, a support shaft is slidably provided in the guide groove, an impeller is sleeved on the outside of the support shaft, a gear ring is fixedly provided at the center of the front side of the impeller, a gear is fixedly provided at the rear side of the guide plate corresponding to the center of the guide groove, the gear ring is meshed with the gear, and the centers of the support shaft, the gear, the gear ring and the impeller are located on the same horizontal line, and a driving component for driving the support shaft to move back and forth in the lateral direction to approach or move away from the cable bracket on the side wall of the tunnel is provided on the rail car. The present invention can automatically release the cable and automatically place the released cable on the cable bracket along the arrangement direction of the tunnel cable bracket, which greatly improves the construction efficiency of cable laying.

Description

Technical Field

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

[0002] In order to ensure normal power supply inside the subway, workers need to lay cables on the tunnel walls in the subway section. The cables to be laid generally extend along the extension direction of the tunnel.

[0003] In order to improve the efficiency of cable wiring and reduce the labor intensity of cable wiring, a rail vehicle that can move along the tunnel rail is generally used as a carrier for cable laying equipment. That is, when the rail vehicle moves along the rail, the cable is laid onto the ground through the wire-laying machine on it, and then the staff moves the ground cable to the cable bracket.

[0004] For example, the patent with application number 202011018831.3 discloses an automatic cable laying work vehicle for subway tunnels, which travels on a subway track plate, and an I-beam rail is fixedly connected to the subway track plate. The work vehicle includes a frame, and a reeling device for reeling in cables is fixedly connected to the top of the frame, and the reeling device includes an unwinding drive assembly, a cable reel fixing bracket assembly and a cable reel; two groups of active walking trolleys are installed at one end of the bottom of the frame, and two groups of driven walking trolleys are installed at the other end of the bottom of the frame, the active walking trolley includes an active trolley frame and active walking wheels, and the active walking wheels are transmission-connected to a drive assembly for driving the walking wheels; the driven walking trolley includes a driven trolley frame and driven walking wheels.

[0005] The above-mentioned prior art reduces labor costs, reduces the workload of workers, shortens construction period, improves work efficiency, reduces friction between the cable and the frame during unwinding, guides the cable, and ensures the quality of the cable. However, after the cable is released to the ground, it still needs to be manually moved to the cable bracket, which is still very labor-intensive and affects the efficiency of cable laying. Summary of the invention

[0006] In order to solve the above technical problems, the present invention proposes a cable laying trolley which can travel on a track, automatically release the cable along the direction of the cable support and place the cable directly on the cable support.

[0007] The technical solution of the present invention is achieved in this way:

[0008] A cable laying trolley comprises a rail car for traveling on a track, a bracket arranged on the rail car for carrying a cable drum for rotating and releasing the cable, a cable conveyor arranged on the rail car for conveying the cable to one side, and a guide frame arranged on the rail car for guiding the cable laterally, wherein a guide disc fixed to the rail car is arranged at the rear of the guide frame, an annular guide groove is arranged on the rear side of the guide disc, a support shaft is slidably arranged in the guide groove, an impeller is sleeved on the outer side of the support shaft, a gear ring is fixedly arranged at the center of the front side of the impeller, a gear is fixedly arranged on the rear side of the guide disc corresponding to the center of the guide groove, the gear ring is meshed with the gear, and the centers of the support shaft, the gear, the gear ring and the impeller are located on the same horizontal line, and a driving assembly for driving the support shaft to move back and forth in the lateral direction to approach or move away from the cable bracket on the side wall of the tunnel is arranged on the rail car, wherein:

[0009] The impeller includes three blades distributed symmetrically with the center, and one blade is always in a lateral state with the top end facing the rail car to support the part of the released cable located on the rear side of the guide frame. The gear is an incomplete gear. When the support shaft moves back and forth once, the impeller revolves one circle and rotates 240° to push the part of the cable supported by the blades onto the cable bracket.

[0010] Furthermore, right-angled triangular blocks with their tips facing the cable holder are provided on both sides of the inner cavity of the guide groove, an external top spring is provided at the end of the block away from the cable holder, a receiving groove for accommodating the block is provided in the guide plate, the external top spring is arranged in the receiving groove, the two blocks are in a state of right-angled sides facing each other in the height direction, and the distance between the right-angled sides of the two blocks in the height direction is adapted to the outer diameter of the support shaft.

[0011] Furthermore, the driving assembly includes an electric push rod, a driving frame, a driving rod and a rotating sleeve, the electric push rod is installed on the rail car, the driving frame is slidably installed on the rail car, and the driving frame is connected to the protruding end of the electric push rod, the bottom end of the driving rod is rotatably connected to the driving frame, the rotating sleeve is rotatably installed on the rear end of the support shaft, and the top end of the driving rod is inserted into the rotating sleeve, and when the driving rod pushes the support shaft toward the side of the cable bracket, the top end is inclined toward the side of the rail car.

[0012] Furthermore, a retaining groove is provided at the end of the driving frame, and the bottom end of the driving rod is rotatably installed in the retaining groove, and when the driving rod pushes the supporting shaft toward the side of the cable bracket, the side thereof away from the cable bracket is supported on the side wall of the retaining groove away from the cable bracket, and when the driving rod pulls the supporting shaft upward to make a circular motion toward the side away from the cable bracket, the side of the driving rod toward the cable bracket is supported on the inner wall of the retaining groove toward the side of the cable bracket, and the driving rod is in a vertical state.

[0013] Furthermore, a cavity is provided inside the impeller, and three limiting grooves are provided on the circumferential surface of the inner part of the support shaft in the cavity and are symmetrically distributed with respect to the center. A retractable limiting protrusion is provided inside the blade, and an internal pressure spring is provided between the blade and the limiting protrusion. The internal pressure spring allows the bottom end of the limiting protrusion to be inserted into the limiting groove, and when the impeller rotates, the limiting protrusion passes through the limiting groove in sequence through telescopic movement, and the top of the groove wall of the limiting groove located at the top is in a vertically upward state.

[0014] Furthermore, the top end of the limiting protrusion extends out from the top end of the blade, and the top ends of two adjacent limiting protrusions are connected by a first connecting rod and a second connecting rod, wherein the first connecting rod and the second connecting rod are rotatably connected between the opposite ends, and the opposite ends of the first connecting rod and the second connecting rod are rotatably connected on the rear side surface of the limiting protrusion, and when the bottom end of the limiting protrusion is located in the limiting groove, the first connecting rod and the second connecting rod are both located on the inner side of the groove formed between the two adjacent blades, and when the bottom end of the limiting protrusion is located at the top end of the groove wall of the limiting groove, the first connecting rod and the second connecting rod are located at the notch position of the groove.

[0015] Furthermore, the inner wall surfaces on both sides of the limiting groove are arc-shaped surfaces that arch backward, a return spring is connected between the first connecting rod and the second connecting rod on the same limiting protrusion, and the front side surface of the limiting protrusion along the rotation direction of the blade is an arc-shaped surface with the top end located behind the bottom end and the two ends arching forward.

[0016] Furthermore, a longitudinal rod is passed through the rear end of the support shaft, and a telescopic rod parallel to the reciprocating direction of the support shaft is installed on the rail car. The bottom end of the longitudinal rod is fixed to the movable end of the telescopic rod, and the longitudinal rod is used to prevent the support shaft from rotating.

[0017] Furthermore, the top ends of the longitudinal rod and the driving rod are both sleeved with rod sleeves, the top ends of the two rod sleeves are respectively fixedly mounted on the support shaft and the rotating sleeve, and the height of the top ends of the longitudinal rod and the driving rod is less than the height of the cable supported by the blades.

[0018] Furthermore, a support frame is arranged between the guide frame and the guide plate, a limiting sleeve for the cable to pass through is slidably arranged on the top of the support frame, and the bottom end of the limiting sleeve is fixedly connected to the driving frame.

[0019] The present invention has the following beneficial effects:

[0020] 1. The present invention can automatically release the cable onto the guide disk along the direction of the tunnel. Then, when the guide disk passes the cable bracket, the worker only needs to start the driving component to place the released cable directly onto the cable bracket. This realizes the efficient operation of automatically releasing the cable and automatically placing the cable onto the cable bracket, greatly improves the cable laying efficiency, reduces the intensity of manual work, and achieves the effect of reducing costs and increasing efficiency.

[0021] 2. When the impeller of the present invention pushes the cable to the cable bracket, the cable is first lifted to a height greater than the height of the corresponding cable bracket, and then automatically falls into the cable bracket due to gravity. At the same time, when the cable is pushed, the cable falls to the position of the cable bracket and passes over the end of the cable bracket, which can prevent the cable from colliding with the end of the cable bracket and causing damage to the cable skin, thereby better protecting the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the tunnel cable laying trolley of the present invention in a tunnel;

[0023] Figure 2 The present invention Figure 1 A in the enlarged view;

[0024] Figure 3 The present invention Figure 1 A partial schematic diagram of the

[0025] Figure 4 The present invention Figure 3 The enlarged view of point B in the figure;

[0026] Figure 5 The present invention Figure 3 A top view of

[0027] Figure 6 The present invention Figure 5 The enlarged view of point C in the figure;

[0028] Figure 7 is a schematic diagram of a boot disk of the present invention;

[0029] Figure 8 is a partial cross-sectional view of the guide disk of the present invention;

[0030] Fig. 9 is a cross-sectional view of an impeller of the present invention;

[0031] Fig.10 The present invention Fig. 9 Another perspective of the picture.

[0032] In the figure: 1. rail car; 2. bracket; 3. cable conveyor; 4. guide frame; 5. guide plate; 6. guide groove; 7. support shaft; 8. impeller; 8.1. blade; 8.2. cavity; 8.3. groove; 9. gear ring; 10. gear; 11. drive assembly; 11.1. electric push rod; 11.2. drive frame; 11.3. drive rod; 11.4. rotating sleeve; 12. block; 13. external top spring; 14. storage groove; 15. stop groove; 16. limit groove; 17. limit protrusion; 18. internal pressure spring; 19. first connecting rod; 20. second connecting rod; 21. reset spring; 22. longitudinal rod; 23. telescopic rod; 24. rod sleeve; 25. support frame; 26. limit sleeve. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] like Figures 1 to 10 As shown, a typical embodiment of the present invention provides a cable laying trolley, comprising a rail car 1 for traveling on a rail, a bracket 2 arranged on the rail car 1 for carrying a cable drum to rotate and release the cable, a cable conveyor 3 arranged on the rail car 1 for conveying the cable to one side, and a guide frame 4 arranged on the rail car 1 for guiding the cable laterally, a guide disc 5 fixed on the rail car 1 is arranged at the rear of the guide frame 4, a ring-shaped guide groove 6 is arranged on the rear side of the guide disc 5, a support shaft 7 is slidably arranged in the guide groove 6, an impeller 8 is sleeved on the outside of the support shaft 7, a gear ring 9 is fixedly arranged at the center of the front side of the impeller 8, a gear 10 is fixedly arranged on the rear side of the guide disc 5 corresponding to the center of the guide groove 6, the gear ring 9 is meshed with the gear 10, and the centers of the support shaft 7, the gear 10, the gear ring 9 and the impeller 8 are located on the same horizontal line, and a driving component 11 is arranged on the rail car 1 for driving the support shaft 7 to move back and forth in the lateral direction to approach or move away from the cable bracket on the side wall of the tunnel, wherein:

[0035] The impeller 8 includes three blades 8.1 distributed symmetrically with respect to the center, and one blade 8.1 is always in a lateral state with its top end facing the rail vehicle 1 to support the portion of the released cable located on the rear side of the guide frame 4. The gear 10 is an incomplete gear 10. When the support shaft 7 moves back and forth once, the impeller 8 revolves one circle and rotates 240° to push the portion of the cable supported by the blade 8.1 onto the cable bracket.

[0036] The rail vehicle 1 carries the cable drum and moves on the rail. The cable drum rotates on the bracket 2 to continuously release the cable. The released cable is conveyed by the cable conveyor 3, passes through the guide frame 4, extends from the side of the rail vehicle 1, bends backward, and is continuously released along the guide drum 5. The cable passing through the guide drum 5 falls on the blade 8.1 in a horizontal state with the top facing the rail vehicle 1.

[0037] When the guide plate 5 passes through the cable support, the driving assembly 11 is started, and the driving assembly 11 makes the support shaft 7 do circular motion in the guide groove 6. The support shaft 7 passes through the upper half of the circumference of the guide groove 6. During this process, the support shaft 7 carries the impeller 8 to move toward the side of the cable support. At the same time, the impeller 8 rotates by rolling on the gear 10 through the gear ring 9. The cable supported by the blade 8.1 will be pushed toward the side of the cable support during the rotation of the impeller 8. The pushed cable will first be lifted to a state where the height is greater than the cable support. Then, when the top of the blade 8.1 that pushes the cable support tilts upward, the cable will automatically fall from a high place under the action of its own gravity, thereby pushing the cable on the guide plate 5 to the cable support.

[0038] like Figure 7 and Figure 8 As shown, right-angled triangular blocks 12 with the tip facing the cable holder are provided on both sides of the inner cavity of the guide groove 6, an outer top spring 13 is provided at the end of the block 12 away from the cable holder, a receiving groove 14 for accommodating the block 12 is provided in the guide plate 5, the outer top spring 13 is arranged in the receiving groove 14, the two blocks 12 are in a state of right-angled sides facing each other in the height direction, and the distance between the right-angled sides of the two blocks 12 in the height direction is adapted to the outer diameter of the support shaft 7.

[0039] When the support shaft 7 moves one circle in the guide groove 6, the inclined surface of the stopper 12 is squeezed so that the stopper 12 compresses the outer top spring 13 and is stored in the storage groove 14 to pass over the stopper 12. After the support shaft 7 passes over the stopper 12, the stopper 12 automatically extends under the action of the outer top spring 13. Then, when the support shaft 7 is at one side end of the horizontal diameter line of the guide groove 6 close to the cable bracket, the support shaft 7 is located at the bottom of the stopper 12, and the stopper 12 can prevent the support shaft 7 from moving upward. Similarly, when the support shaft 7 is at one side end of the horizontal diameter line of the guide groove 6 away from the cable bracket, the support shaft 7 is located at the top of the stopper 12, and the stopper 12 can prevent the support shaft 7 from moving downward. Such a configuration can ensure that when the driving assembly 11 causes the support shaft 7 to move back and forth, the support shaft 7 can make a complete circular motion along the guide groove 6.

[0040] like Figures 2 to 6As shown, the driving assembly 11 includes an electric push rod 11.1, a driving frame 11.2, a driving rod 11.3 and a rotating sleeve 11.4. The electric push rod 11.1 is installed on the rail car 1, and the driving frame 11.2 is slidably installed on the rail car 1, and the driving frame 11.2 is connected to the protruding end of the electric push rod 11.1, the bottom end of the driving rod 11.3 is rotatably connected to the driving frame 11.2, and the rotating sleeve 11.4 is rotatably installed on the rear side end of the support shaft 7, and the top end of the driving rod 11.3 is inserted into the rotating sleeve 11.4, and when the driving rod 11.3 pushes the support shaft 7 toward the side of the cable bracket, the top end is inclined toward the side of the rail car 1.

[0041] When the guide plate 5 passes the cable support, the electric push rod 11.1 is started, and the electric push rod 11.1 causes the driving frame 11.2 to move toward one side of the cable support, and the driving frame 11.2 drives the driving rod 11.3 to move. At this time, the support shaft 7 is located at the end of the horizontal diameter line of the guide groove 6 away from the cable support, and the axis of the support shaft 7 and the axis of the guide groove 6 are located on the same horizontal plane. Since the driving rod 11.3 is in a state of tilting the top end away from the cable support, the driving rod 11.3 has an upward component force on the rotating sleeve 11.4 by using its tilted state during the displacement process, and then, the support shaft 7 can pass the height of the center of the guide groove 6 upward in the height direction, so that the support shaft 7 can smoothly enter the upper half of the circumference of the guide groove 6, and under the guidance of the guide groove 6, the support shaft 7 smoothly performs a circular motion.

[0042] When the electric push rod 11.1 is extended to the farthest position, the support shaft 7 is just located at one end of the horizontal diameter line of the guide groove 6 close to the cable bracket, and at this time, the support shaft 7 is supported by the driving rod 11.3, and then the electric push rod 11.1 retracts.

[0043] During the retraction of the electric push rod 11.1, since the drive rod 11.3 is displaced to the side away from the cable bracket, the drive rod 11.3 will continuously remove the supporting effect on the support shaft 7. Under the action of gravity, the support shaft 7 will automatically follow the lower half of the circumference of the guide groove 6 until the support shaft 7 passes upward over the end of the horizontal diameter line of the guide groove 6 away from the cable bracket and returns to the initial position.

[0044] like Figure 4 As shown, a retaining groove 15 is provided at the end of the driving frame 11.2, and the bottom end of the driving rod 11.3 is rotatably installed in the retaining groove 15, and when the driving rod 11.3 pushes the supporting shaft 7 toward the side of the cable bracket, the side thereof away from the cable bracket is supported on the side wall of the retaining groove 15 away from the cable bracket, and when the driving rod 11.3 pulls the supporting shaft 7 upward to make a circular motion away from the cable bracket, the side of the driving rod 11.3 toward the cable bracket is supported on the inner wall of the retaining groove 15 toward the side of the cable bracket, and the driving rod 11.3 is in a vertical state.

[0045] During the retraction of the electric push rod 11.1, after the support shaft 7 moves to the bottom of the guide groove 6, as the electric push rod 11.1 continues to retract, under the action of the gravity of the support shaft 7, the drive rod 11.3 will rotate from an inclined state to a vertical state on the guide frame 4, and then the drive rod 11.3 will push the support shaft 7 to move to the initial position in the guide groove 6 in the vertical state.

[0046] like Fig. 9 As shown, a cavity 8.2 is provided inside the impeller 8, and three limiting grooves 16 symmetrically distributed in the center are opened on the circumferential surface of the support shaft 7 located inside the cavity 8.2. A retractable limiting protrusion 17 is provided inside the blade 8.1, and an internal pressure spring 18 is provided between the blade 8.1 and the limiting protrusion 17. The internal pressure spring 18 makes the bottom end of the limiting protrusion 17 inserted into the limiting groove 16, and when the impeller 8 rotates, the limiting protrusion 17 passes through the limiting groove 16 in sequence through telescopic movement, and the top of the groove wall of the limiting groove 16 located at the top is in a vertically upward state.

[0047] When the impeller 8 rotates, the limiting protrusion 17 rotates along with the impeller 8. At this time, the bottom end of the limiting protrusion 17 will sequentially pass through the limiting grooves 16 in its circular motion trajectory. Specifically, in this embodiment, the impeller 8 will pass through two limiting grooves 16 each time it rotates.

[0048] Specifically, when the limiting protrusion 17 passes the top of the groove wall of the first limiting groove 16, the impeller 8 that originally supported the cable is in a vertical state, and at this time, the cable falls from the highest lifted position to the cable bracket under the action of its own gravity, and when the bottom end of the limiting protrusion 17 enters the limiting groove 16, under the action of the internal pressure spring 18, the limiting protrusion 17 can be effectively limited by the limiting groove 16, and then, when the gear ring 9 passes through the toothed area of ​​the gear 10, the cooperation between the limiting protrusion 17 and the limiting groove 16 can ensure that the impeller 8 will not rotate, thereby ensuring that the impeller 8 recovers to the state where one of the blades 8.1 continues to support the bottom of the cable after one revolution.

[0049] like Figure 4 As shown, the top end of the limiting protrusion 17 extends from the top end of the blade 8.1, and the top ends of two adjacent limiting protrusions 17 are connected by the first connecting rod 19 and the second connecting rod 20, wherein the first connecting rod 19 and the second connecting rod 20 are rotationally connected between the opposite ends, and the opposite ends of the first connecting rod 19 and the second connecting rod 20 are rotationally connected on the rear side surface of the limiting protrusion 17, and when the bottom end of the limiting protrusion 17 is located in the limiting groove 16, the first connecting rod 19 and the second connecting rod 20 are both located on the inner side of the groove 8.3 formed between the two adjacent blades 8.1, and when the bottom end of the limiting protrusion 17 is located at the top end of the groove wall of the limiting groove 16, the first connecting rod 19 and the second connecting rod 20 are located at the notch position of the groove 8.3.

[0050] In the initial state, when the guide plate 5 and the impeller 8 support the cable, the first connecting rod 19 and the second connecting rod 20 will not contact the cable. When the blade 8.1 supporting the cable moves to a vertical state with the top facing upward, the first connecting rod 19 and the second connecting rod 20 connected to each other move to the notch position of the groove 8.3. At this time, the first connecting rod 19 and the second connecting rod 20 located between the blade 8.1 supporting the cable and the blade 8.1 adjacent to the front side thereof, during the random rotation process, push the cable to one side of the cable support by swinging to the notch position of the groove 8.3, and can block the cable during the falling process, ensuring that the cable effectively passes over the end of the cable support, so that the cable falls into the middle position of the cable support, which improves the cable falling into the appropriate position of the cable support on the one hand, and prevents the cable from colliding with the end of the cable support and causing skin damage on the other hand.

[0051] More importantly, by setting the first connecting rod 19 and the second connecting rod 20 to achieve the effect of pushing the cable by swinging toward one side of the notch of the groove 8.3, the first connecting rod 19 and the second connecting rod 20 can make up for the disadvantage that the groove cavity of the groove 8.3 cannot push the cable, thereby ensuring that the cable can be stably pushed to the cable bracket when the outer circumferential surface of the central part of the impeller 8 is located outside the cable bracket, and ensuring that when the cable is not pushed, the impeller 8 can effectively pass through the cable bracket during the displacement of the rail vehicle 1 without hitting the cable bracket.

[0052] like Fig. 9 and Fig.10 As shown, the inner wall surfaces on both sides of the limiting groove 16 are arc-shaped surfaces that are arched backwards, and a return spring 21 is connected between the first connecting rod 19 and the second connecting rod 20 on the same limiting protrusion 17. The front side surface of the limiting protrusion 17 along the rotation direction of the blade 8.1 is an arc-shaped surface with the top end located behind the bottom end and the two ends arching forward.

[0053] Specifically, in this embodiment, when the first link 19 and the second link 20 move to the notch position of the groove 8.3, the first link 19 and the second link 20 are in a straight line, which is more convenient for the cable to fall, and can push the cable to a more inner position on one side of the cable bracket, ensuring that the cable can fall directly into the cable bracket more effectively. When the first link 19 and the second link 20 move to the notch position of the groove 8.3, the return spring 21 is stretched, and then, when the limiting protrusion 17 enters the limiting groove 16 again, the return spring 21 can restore the first link 19 and the second link 20 to the initial state.

[0054] After the cable falls onto the cable holder, the limiting protrusion 17 above the cable will use its curved surface to push the cable further toward the direction of the cable holder against the tunnel wall during the process of passing downward over the cable, so that the cable moves to a more inner position of the cable holder, thereby ensuring that the cable holder will not move out of the cable holder due to its own toughness, thereby ensuring that the cable is effectively pushed onto the cable holder.

[0055] like Figure 2 and Figure 4 As shown, a longitudinal rod 22 is passed through the rear end of the support shaft 7, and a telescopic rod 23 parallel to the reciprocating direction of the support shaft 7 is installed on the rail car 1. The bottom end of the longitudinal rod 22 is fixed to the movable end of the telescopic rod 23, and the longitudinal rod 22 is used to prevent the support shaft 7 from rotating.

[0056] When the driving assembly 11 drives the support shaft 7 to reciprocate, the telescopic rod 23 follows the telescopic movement. In this process, the longitudinal rod 22 locks the support shaft 7 in the circumferential direction so that the support shaft 7 does not rotate, thereby ensuring that the direction of the limit slot 16 does not change.

[0057] like Figure 4 As shown, the top ends of the longitudinal rod 22 and the driving rod 11.3 are both sleeved with rod sleeves 24, the top ends of the two rod sleeves 24 are fixedly mounted on the support shaft 7 and the rotating sleeve 11.4 respectively, and the top ends of the longitudinal rod 22 and the driving rod 11.3 are less than the height of the cable supported by the blade 8.1.

[0058] By providing the rod sleeve 24, the top of the driving rod 11.3 and the longitudinal rod 22 can be prevented from interfering with the cable. At the same time, when the support shaft 7 is located at the top position of the guide groove 6, the rod sleeve 24 can prevent the longitudinal rod 22 from separating from the pre-support shaft 7 and prevent the driving rod 11.3 from separating from the rotating sleeve 11.4.

[0059] like Figure 3 As shown, a support frame 25 is arranged between the guide frame 4 and the guide plate 5, and a limiting sleeve 26 for the cable to pass through is slidably arranged on the top of the support frame 25, and the bottom end of the limiting sleeve 26 is fixedly connected to the driving frame 11.2.

[0060] When the impeller 8 is pushing the cable, the limiting sleeve 26 moves synchronously in the lateral direction with the impeller 8. At this time, the limiting sleeve 26 can push the portion of the cable located in front of the impeller 8 inward, thereby reducing the influence of the toughness on the cable when the cable is pushed by the impeller 8, making it difficult for the cable to move outward due to the toughness, thereby ensuring that the cable is stably placed on the cable bracket.

[0061] 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, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A cable laying trolley, comprising a rail car for traveling on a track, a bracket arranged on the rail car for carrying a cable drum for rotating and releasing the cable, a cable conveyor arranged on the rail car for conveying the cable to one side, and a guide frame arranged on the rail car for guiding the cable to the side, characterized in that: A guide plate fixed on the rail vehicle is arranged at the rear of the guide frame, an annular guide groove is arranged on the rear side of the guide plate, a support shaft is slidably arranged in the guide groove, an impeller is sleeved on the outside of the support shaft, a gear ring is fixedly arranged at the center of the front side of the impeller, a gear is fixedly arranged on the rear side of the guide plate corresponding to the center of the guide groove, the gear ring is meshed with the gear, and the centers of the support shaft, the gear, the gear ring and the impeller are located on the same horizontal line, and a driving assembly for driving the support shaft to move back and forth in the lateral direction to approach or move away from the cable bracket on the side wall of the tunnel is arranged on the rail vehicle, wherein: The impeller includes three blades distributed symmetrically around the center, and one blade is always in a transverse state with the top end facing the rail car to support the part of the released cable located at the rear side of the guide frame. The gear is an incomplete gear. When the support shaft moves back and forth once, the impeller orbits once and rotates 240 degrees to push the part of the cable supported by the blades onto the cable bracket. The driving assembly includes an electric push rod, a driving frame, a driving rod and a rotating sleeve. The electric push rod is installed on the rail car, the driving frame is slidably installed on the rail car, and the driving frame is connected to the protruding end of the electric push rod, the bottom end of the driving rod is rotatably connected to the driving frame, the rotating sleeve is rotatably installed on the rear side end of the support shaft, and the top end of the driving rod is inserted into the rotating sleeve, and when the driving rod pushes the supporting shaft toward the side of the cable bracket, the top end is inclined toward the side of the rail car.

2. A cable laying trolley according to claim 1, characterized in that: Blocks in the form of right-angled triangles with their tips pointing toward the cable bracket are arranged on both sides of the inner cavity of the guide groove, an external top spring is arranged at one end of the block away from the cable bracket, a receiving groove for accommodating the block is arranged in the guide plate, the external top spring is arranged in the receiving groove, the two blocks are in a state of right-angled sides facing each other in the height direction, and the distance between the right-angled sides of the two blocks in the height direction is adapted to the outer diameter of the support shaft.

3. A cable laying trolley according to claim 1, characterized in that: A retaining groove is provided at the end of the driving frame, and the bottom end of the driving rod is rotatably installed in the retaining groove, and when the driving rod pushes the supporting shaft toward the side of the cable bracket, the side thereof away from the cable bracket is supported on the side wall of the retaining groove away from the cable bracket, and when the driving rod pulls the supporting shaft upward to make a circular motion toward the side away from the cable bracket, the side of the driving rod toward the cable bracket is supported on the inner wall of the retaining groove toward the cable bracket, and the driving rod is in a vertical state.

4. A cable laying trolley according to claim 3, characterized in that: A cavity is provided inside the impeller, and three limiting grooves symmetrically distributed in the center are opened on the circumferential surface of the support shaft located in the cavity. A retractable limiting protrusion is provided in the blade, and an internal pressure spring is provided between the blade and the limiting protrusion. The internal pressure spring allows the bottom end of the limiting protrusion to be inserted into the limiting groove, and when the impeller rotates, the limiting protrusion passes through the limiting groove in turn through telescopic movement, and the top of the groove wall of the limiting groove located at the top is in a vertically upward state.

5. A cable laying trolley according to claim 4, characterized in that: The top end of the limiting protrusion extends out from the top end of the blade, and the top ends of two adjacent limiting protrusions are connected by a first connecting rod and a second connecting rod, wherein the first connecting rod and the second connecting rod are rotatably connected between the opposite ends, and the opposite ends of the first connecting rod and the second connecting rod are rotatably connected on the rear side surface of the limiting protrusion, and when the bottom end of the limiting protrusion is located in the limiting groove, the first connecting rod and the second connecting rod are both located on the inner side of the groove formed between the two adjacent blades, and when the bottom end of the limiting protrusion is located at the top end of the groove wall of the limiting groove, the first connecting rod and the second connecting rod are located at the notch position of the groove.

6. A cable laying trolley according to claim 5, characterized in that: The inner wall surfaces on both sides of the limiting groove are arc-shaped surfaces arched backward, a return spring is connected between the first connecting rod and the second connecting rod on the same limiting protrusion, and the front side surface of the limiting protrusion along the rotation direction of the blade is an arc-shaped surface with the top end located behind the bottom end and the two ends arched forward.

7. A cable laying trolley according to claim 4, characterized in that: A longitudinal rod is passed through the rear end of the support shaft, and a telescopic rod parallel to the reciprocating direction of the support shaft is installed on the rail car. The bottom end of the longitudinal rod is fixed to the movable end of the telescopic rod, and the longitudinal rod is used to prevent the support shaft from rotating.

8. A cable laying trolley according to claim 7, characterized in that: The top ends of the longitudinal rod and the driving rod are both sleeved with rod sleeves, the top ends of the two rod sleeves are respectively fixedly mounted on the support shaft and the rotating sleeve, and the height of the top ends of the longitudinal rod and the driving rod is less than the height of the cable supported by the blades.

9. The cable laying trolley according to claim 1, characterized in that: A support frame is arranged between the guide frame and the guide plate, a limiting sleeve for the cable to pass through is slidably arranged on the top of the support frame, and the bottom end of the limiting sleeve is fixedly connected to the driving frame.

Images