Cable installation device for building electrical installation

Abstract

The invention discloses a cable installation device for building electrical installation in the technical field of cable installation, and the cable installation device comprises a support and a traction piece. The support is slidably provided with a cable clamping device, and the support is provided with a driving mechanism; the yarn trapper comprises a slide rail which is slidably arranged with the support; the middle part of the upper clamping piece is rotationally arranged on the sliding rail through a rotating shaft; the lower clamping piece is slidably arranged at the bottom of the sliding rail and can enable the traction piece to rotate; the connecting pieces are used for connecting the adjacent upper clamping pieces and rotationally arranged at the tops of the upper clamping pieces, and vertical rods are fixedly arranged on the connecting pieces; the intermittent clamp is mounted between the driving mechanism and the vertical rod, and the vertical rod is sleeved with the intermittent clamp; the reciprocating mechanism is arranged between the bracket and the sliding rail and is used for driving the lower clamping piece to reciprocate; the upper clamping piece and the lower clamping piece intermittently rotate to convey the traction piece through reciprocating motion, the traction piece is pulled backwards when encountering obstacles, the end of the traction piece is separated from the obstacles, the probability that the traction piece penetrates through the obstacles is increased, and the time and efficiency that the traction piece penetrates through a line pipe are shortened.

Description

Technical Field

[0001] The invention relates to the technical field of cable installation, in particular to a cable installation device used for building electrical installation. Background Art

[0002] Building electrical construction includes electrical systems such as lighting, network, power supply, and fire protection. In order to protect the cables, the cables are generally inserted into the wire tubes. Before the building electrical construction, the wire tubes will be laid according to the planned route; but in order to ensure the aesthetics of the building, the wire tubes will be connected in advance and embedded in the wall; during the wall pouring process, in order to prevent the mold from expanding, reinforcement ribs will be installed on the templates on both sides. The reinforcement ribs are set on the outside of the templates on both sides, and the stress surface of the template is increased by connecting the tension screws; when the tension screws pass through the templates with high density, it is inevitable that some of the tension screws will damage the wire tubes between the templates, causing some mortar to enter the wire tubes along the damaged parts of the wire tubes. After the mortar entering the wire tubes is plasticized, it will interfere with the installation of the cables; There are two principles for existing cable threading devices. In both methods, the end of the traction member is first inserted from one end and then passed out from the other end. The cable is tied to one end and the cable is passed into the wire tube through the traction member. The most commonly used traction member is steel wire. One is the pressure type, which uses a rubber plug to plug one end of the wire tube, and then uses gas pressure to squeeze the plug and the end of the traction piece out of the other end of the wire tube. When the wire tube is damaged, there is a risk of gas leakage in the wire tube. Gas leakage will cause the pressure in the wire tube to decrease, weakening the power of the plug to move forward. In addition, the plasticized mortar greatly hinders the advancement of the plug, causing the plug to remain in the wire tube, increasing the difficulty of installing the traction piece. The other is a direct drive type, which transports the traction piece into the wire tube through the relative movement between the sleeves. When the end of the traction piece moves to the damaged part of the wire tube, the end of the traction piece is easily blocked by the plasticized mortar, resulting in the traction piece being unable to pass through the other end of the wire tube in a short time; Secondly, the most primitive method is for the construction workers to manually insert the traction piece into the wire tube. When the traction piece encounters an obstacle and cannot move forward, the cable is generally rotated to dislocate the end of the traction piece from the obstacle. However, manually rotating the traction piece is not only difficult, but also causes great damage to the construction workers' hands. Summary of the invention

[0003] The technical problem of the present invention is to provide a cable installation device for building electrical installation, which enables the upper clamp and the lower clamp to intermittently rotate and transport the traction member through reciprocating motion. When encountering an obstacle, the traction member is pulled back to separate the end of the traction member from the obstacle, thereby increasing the probability of the traction member passing through the obstacle and shortening the time and efficiency of the traction member passing through the wire pipe.

[0004] To achieve the above-mentioned object, the present invention provides the following technical solution: a cable installation device for building electrical installation, comprising a bracket and a traction member: the bracket is slidably provided with a wire clamp, and a driving mechanism for driving the wire clamp to move forward and backward along the bracket is installed on the bracket; the wire clamp clamps and rotates the traction member when moving forward, and releases the traction member when moving backward; The wire clamp comprises: A slide rail is slidably arranged with the bracket; The upper clamps are arranged in a linear array and are tilted, and the middle part of the upper clamps is rotatably arranged through a rotating shaft and a slide rail; The lower clamping member is slidably disposed at the bottom of the slide rail and can generate relative displacement with the upper clamping member along the axial direction of the rotating shaft to rotate the traction member; A connecting piece is used to connect adjacent upper clamping pieces and is rotatably arranged on the top of the upper clamping pieces. The connecting piece is fixed with a vertical rod. The connecting piece drives the hinge point above the upper clamping piece to move, so that the bottom of the upper clamping piece rotates, and the distance between the bottom of the upper clamping piece and the lower clamping piece is changed, so as to realize the clamping and releasing of the traction piece. The intermittent clamp is installed between the driving mechanism and the vertical rod, and is sleeved with the vertical rod to clamp the vertical rod. The intermittent clamp can clamp the vertical rod when the traction member encounters obstacles when moving forward, and limit the vertical rod to rise and fall. When the clamp moves backward, the upper clamp and the lower clamp keep clamping the traction member, so that the end of the traction member is separated from the obstruction. The reciprocating mechanism is arranged between the bracket and the slide rail, and is used for driving the lower clamp to move back and forth along the axial direction of the rotating shaft.

[0005] As a further solution of the present invention, the intermittent fixture comprises: The main hoop and the auxiliary hoop are both arranged on the side wall of the vertical rod, and the opening sides are respectively facing the forward direction and the backward direction of the slide rail, and a return spring is fixed between the main hoop and the auxiliary hoop; A slide bar is fixedly mounted on the main hoop, and an end of the slide bar passes through the auxiliary hoop and is fixedly mounted with a limit plate; Positioning piece and spring plate, positioning piece and spring plate, the positioning piece is fixedly arranged on both sides of the secondary hoop, the spring plate is fixedly arranged on both sides of the main hoop, the positioning piece and the spring plate are respectively fixedly arranged on adjacent sides with a wedge block and a square block, the wedge block is provided with a hypotenuse and a right angle side parallel to the square block; the hypotenuse of the wedge block can allow the square block to pass over the wedge block, so that the main hoop and the secondary hoop are separated; the wedge block enables the square block to limit the main hoop to approach the secondary hoop through the right angle side, so that the vertical rod can move freely; A main plate and a secondary plate, an elastic member is arranged between the main plate and the secondary plate, the main plate can be driven by a driving mechanism, and the secondary plate is fixed to the main hoop; The trigger rod is fixed to the main board, and the side wall is provided with a protrusion for pressing the spring plate, the protrusion enters between the positioning piece and the spring plate, the spring plate bends and causes the square block to separate from the wedge block.

[0006] As a further solution of the present invention, the main board is rotatably provided with a pressure regulating bolt, the pressure regulating bolt is threadedly connected with a pressure regulating plate, and the elastic member is arranged between the pressure regulating plate and the sub-plate.

[0007] As a further solution of the present invention, the reciprocating mechanism comprises: The sliding frame is slidably arranged with the bracket, and the bottom is fixed with pins penetrating the bracket, and the pins are arranged in a linear array; A reciprocating groove is provided on the lower clamping member, and the pin can be inserted into the reciprocating groove; The trigger plate is fixed to the central rotating shaft of the upper clamp, and a pin shaft is fixed to the bottom to slide with the slide frame. The trigger plate can rotate with the upper clamp, and intermittently press the slide frame through the pin shaft to insert the pin into the reciprocating groove.

[0008] As a further solution of the present invention, the upper clamp is coaxially rotated with a positioning commutator, which is used for positioning between the central rotating shaft of the upper clamp and the slide rail, so that the upper clamp can adjust the tilt direction, and the positioning commutator includes: A reversing frame is slidably arranged with the slide rail and rotatably arranged with the central rotating shaft of the upper clamp; The reversing bolt has two ends that penetrate the reversing frame and the slide rail, and the end is threadedly connected with a reversing nut.

[0009] As a further solution of the present invention, the driving mechanism includes a reciprocating motor arranged on a bracket, the output shaft of the reciprocating motor is equipped with a reciprocating screw, and the reciprocating screw is rotatably arranged with the bracket; the reciprocating screw is threadedly connected to a reciprocating connector fixed to the mainboard.

[0010] As a further solution of the present invention, the bracket includes: a side plate and a guide rail, both ends of the guide rail are fixed with a pin, the pin is threadedly connected with a fastening bolt, and the fastening bolt sleeve is provided with a gasket located on the outside of the side plate.

[0011] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the upper clamp is rotated to shorten the distance between the upper clamp and the lower clamp, the traction member is clamped and then driven to move, and the traction member is released when retreating, and the operation is repeated to continuously transport the traction member; when the end of the traction member passes through the other end of the wire tube, the cable is bound to the end of the traction member, and the difference between pulling the traction member and passing the traction member is that the inclination direction of the upper clamp needs to be changed; the operation process is simple, when transporting, the traction member is clamped and then driven to move, and the traction member is automatically released when retreating, the connection is smooth, the switching time can be reduced, and the requirement for the driving source is low, the adaptability is strong, and the supporting cost and installation time can be saved.

[0012] In the present invention, when the end of the traction member is blocked, the end of the traction member inside the tube cannot continue to move forward, while the outer part of the traction member is pushed into the tube, the traction member will bend and accumulate force, and the reverse thrust applied by the traction member on the upper clamp can strengthen the clamping of the traction member by the upper clamp; at the same time, the traction member with accumulated force can squeeze obstacles with low adhesion off the wire tube, reducing the difficulty of cable installation.

[0013] In the present invention, when the traction member cannot bounce off the obstacle, the intermittent clamp clamps the vertical rod, and the driving mechanism drives the vertical rod to change the moving direction through the intermittent clamp. At this time, the vertical rod is clamped by the intermittent clamp and drives the vertical rod to retreat, and the vertical rod drives the top of the upper clamp to retreat. Since the axial movement of the vertical rod is limited, the upper clamp cannot rotate and can only retreat, so that the traction member remains in a clamped state, and the traction member retreats with the upper clamp, so that the traction member accumulates force and releases it, and the end of the traction member is away from the obstacle. When the traction member moves toward the outlet end of the pipe again, it can be staggered with the obstacle, thereby improving the efficiency of wearing the traction member, and can avoid the end of the traction member being unable to pass out, affecting the installation of the traction member.

[0014] In the present invention, when the wire clamp moves forward, the upper clamp drives the trigger plate to rotate through the rotating shaft, the trigger plate drives the pin shaft to press the slide frame downward, the slide frame drives the pin at the bottom to insert into the reciprocating groove, the pin alternately contacts with the reciprocating groove, and under the action of the pin and the reciprocating groove, the lower clamp and the upper clamp produce relative displacement along the axis direction of the rotating shaft, so that the traction member rotates, and the traction member rotates when being clamped, which can continuously change the position of the end of the traction member, and further increase the probability of the end of the traction member passing over the obstacle.

[0015] In the present invention, the top of the upper clamp is driven to move by the vertical rod, the upper clamp rotates around the axis of the shaft, and the bottom of the upper clamp approaches the lower clamp, thereby clamping the traction member, and the clamping size is not limited, thereby improving the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the wire clamp and its connection relationship of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the wire clamp of the present invention; Figure 4 This is a schematic diagram of the principle structure of the wire clamp of the present invention; Figure 5 It is a schematic diagram of the intermittent clamp structure of the present invention; Figure 6 For the present invention Figure 5 The enlarged structural diagram at A in the middle; Figure 7 This is a schematic diagram of the principle structure of the intermittent clamp of the present invention; Figure 8 It is a schematic structural diagram of the main hoop and its connection relationship in the intermittent clamp of the present invention; Fig. 9 It is a schematic diagram of the main board and its connection relationship structure in the intermittent clamp of the present invention; Fig.10 This is a schematic diagram of the structure of the support and its connection relationship of the present invention; Fig.11 For the present invention Fig.10 The enlarged structural diagram at B in the middle; In the accompanying drawings, the reference numerals are annotated as follows: 1. Bracket; 11. Side plate; 12. Guide rail; 13. Latch; 14. Fastening bolt; 15. Gasket; 2. Wire clamp; 21. Slide rail; 22. Upper clamp; 23. Rotating shaft; 24. Connecting piece; 25. Vertical rod; 26. Lower clamp; 3. Intermittent clamp; 31. Main hoop; 311. Spring plate; 312. Square block; 32. Secondary hoop; 33. Reset spring; 321. Positioning piece; 322. Wedge block; 34. Slide rod; 35. Limiting piece; 36. Main board; 37. Sub-board; 38. Elastic part; 39. Trigger rod; 391. Protrusion; 41. Pressure regulating bolt; 42. Pressure regulating plate; 5. Reciprocating mechanism; 51. Sliding frame; 52. Pin; 53. Reciprocating groove; 54. Trigger plate; 55. Pin shaft; 6. Positioning commutator; 61. Reversing frame; 62. Reversing bolt; 63. Reversing nut; 7. Driving mechanism; 71. Reciprocating motor; 72. Reciprocating screw; 73. Connecting piece; 8. Traction piece. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0019] See also Figure 1-Figure 11 The present invention provides a technical solution: a cable installation device for building electrical installation, comprising a bracket 1 and a traction member 8: the bracket 1 is slidably provided with a wire clamp 2, and a driving mechanism 7 for driving the wire clamp 2 to move forward and backward along the bracket 1 is installed on the bracket 1; the wire clamp 2 clamps and rotates the traction member 8 when moving forward, and releases the traction member 8 when moving backward; For details, see Figure 1 , pass the traction member 8 through the clamp 2, and insert the end of the traction member 8 passing through the clamp 2 into the wire tube, and the driving mechanism 7 drives the clamp 2 forward ( Figure 1 The wire clamp 2 clamps the traction member 8 and drives it forward, so that the traction member 8 moves into the wire tube. When the wire clamp 2 moves backward with the driving mechanism 7, the wire clamp 2 releases the traction member 8, and continuously conveys the traction member 8 into the wire tube in a reciprocating cycle until the end of the traction member 8 passes through the other end of the wire tube. At this time, the cable to be installed is tied to the traction member 8, and the direction of the wire clamp 2 is changed so that the wire clamp 2 clamps the traction member 8 when moving backward, so as to realize the reverse pulling of the traction member 8 until the end of the traction member 8 passes through the wire tube. The wire clamp 2 includes: The slide rail 21 is slidably arranged with the bracket 1; The upper clamps 22 are arranged in a linear array and are tilted, and the middle of the upper clamps 22 is rotatably arranged with the slide rail 21 via a rotating shaft 23; The lower clamping member 26 is slidably disposed at the bottom of the slide rail 21 and can generate relative displacement with the upper clamping member 22 along the axial direction of the rotating shaft 23 to rotate the traction member 8; The connecting piece 24 is used to connect the adjacent upper clamping pieces 22 and is rotatably arranged on the top of the upper clamping piece 22. The connecting piece 24 is fixed with a vertical rod 25. The connecting piece 24 drives the upper hinge point of the upper clamping piece 22 to move, so that the bottom of the upper clamping piece 22 rotates, and the distance between the bottom of the upper clamping piece 22 and the lower clamping piece 26 is changed, so as to achieve the clamping and release of the traction piece 8. The intermittent clamp 3 is installed between the driving mechanism 7 and the vertical rod 25, and is sleeved with the vertical rod 25 to clamp the vertical rod 25. The intermittent clamp 3 can clamp the vertical rod 25 when the traction member 8 encounters obstacles when moving forward, and limit the vertical rod 25 from rising and falling. When the clamp 2 retreats, the upper clamp 22 and the lower clamp 26 keep clamping the traction member 8, so that the end of the traction member 8 is separated from the obstruction. The reciprocating mechanism 5 is disposed between the bracket 1 and the slide rail 21 and is used to drive the lower clamp 26 to reciprocate along the axial direction of the rotating shaft 23; For details, see Figure 1-Figure 4 When the clamp 2 moves forward, the driving mechanism 7 drives the vertical rod 25 to move in the forward direction through the intermittent clamp 3, and the vertical rod 25 drives the top of the upper clamp 22 to move, and the upper clamp 22 rotates around the axis of the rotating shaft 23 (the rotation direction is Figure 4The bottom of the upper clamp 22 approaches the lower clamp 26, thereby clamping the traction member 8; after the upper clamp 22 clamps the traction member 8, the driving mechanism 7 keeps driving the vertical rod 25 to move. At this time, the rotation of the bottom of the upper clamp 22 is limited and cannot continue to rotate. The upper clamp 22 drives the slide rail 21 to move forward through the rotating shaft 23, and the slide rail 21 drives the lower clamp 26 to move synchronously. The reciprocating mechanism 5 drives the lower clamp 26 to move relative to the slide rail 21 (the moving direction is the axial direction of the rotating shaft 23), which can keep the traction member 8 rotating and continuously change the position of the cable end until the slide rail 21 moves to the limit position; When the clamp 2 moves backward, the driving mechanism 7 drives the vertical rod 25 to move in the backward direction through the intermittent clamp 3, and the vertical rod 25 drives the top of the upper clamp 22 to move backward, and the upper clamp 22 rotates in the opposite direction around the rotating shaft 23 (the rotation direction is Figure 4 The bottom of the upper clamp 22 is away from the lower clamp 26, thereby releasing the clamping of the traction member 8; when the upper clamp 22 is separated from the traction member 8, the driving mechanism 7 keeps driving the vertical rod 25 to retreat, and when the upper clamp 22 cannot continue to rotate, the upper clamp 22 drives the slide rail 21 to retreat through the rotating shaft 23; repeat the above operation to continuously transport the traction member 8 until the end of the traction member 8 passes through the other end of the wire tube; in summary, the upper clamp 22 and the lower clamp 26 first clamp the traction member 8 and then drive it to be transported into the tube, otherwise release the traction member 8 and retreat, the process is simple, when transporting, the traction member 8 is clamped and then driven to move, and the traction member 8 is automatically released when retreating, the connection is smooth, the switching time can be reduced, and the requirements for the driving source are low, the adaptability is strong, and the supporting cost and installation time can be saved; The difference between pulling the traction member 8 and wearing the traction member 8 is that the tilting direction of the upper clamping member 22 needs to be changed, and the rest of the process is opposite to the above operation, which will not be described in detail here; When the end of the traction member 8 is blocked, the end of the traction member 8 in the tube cannot move forward, and the outer part of the traction member 8 is pushed into the tube, the traction member 8 will bend and accumulate force, and the reverse thrust exerted by the traction member 8 on the upper clamping member 22 can strengthen the clamping of the traction member 8 by the upper clamping member 22; When the obstacle is bounced away by the bending force of the traction member 8, the above operation is continued to be maintained, and the traction member 8 is continuously conveyed into the tube; when the traction member 8 accumulates force to a certain value (the specific value is proportional to the strength of the traction member 8, and the set value needs to be greater than the force required for the traction member 8 to bend, ensuring that when the end of the traction member 8 encounters an elbow, it can bend and pass through the elbow of the wire tube), the intermittent clamp 3 clamps the vertical rod 25, and the driving mechanism 7 drives the vertical rod 25 to change direction (i.e., retreat) through the intermittent clamp 3. At this time, the vertical rod 25 is clamped by the intermittent clamp The tool 3 is clamped and drives the vertical rod 25 to retreat, and the vertical rod 25 drives the top of the upper clamp 22 to retreat. Since the axial movement of the vertical rod 25 is limited, the upper clamp 22 cannot rotate and can only retreat, so that the traction member 8 remains in a clamped state, and the traction member 8 retreats with the upper clamp 22, so that the traction member 8 accumulates force and releases it, and the end of the traction member 8 is away from the obstacle. When the traction member 8 moves toward the outlet end of the pipe again, it can be staggered with the obstacle, thereby improving the efficiency of wearing the traction member 8 and avoiding the end of the traction member 8 from being unable to pass out, affecting the installation of the cable.

[0020] As a further solution of the present invention, the intermittent fixture 3 comprises: The main hoop 31 and the auxiliary hoop 32 are both arranged on the side wall of the vertical rod 25, and the opening sides are respectively facing the forward direction and the backward direction of the slide rail 21, and a return spring 33 is fixed between the main hoop 31 and the auxiliary hoop 32; The slide bar 34 is fixed to the main hoop 31, and the end of the slide bar 34 passes through the auxiliary hoop 32 and is fixed with a limit plate 35; The positioning member 321 and the spring plate 311, the positioning member 321 is fixedly arranged on both sides of the secondary hoop 32, the spring plate 311 is fixedly arranged on both sides of the main hoop 31, the positioning member 321 and the spring plate 311 are respectively fixedly arranged with a wedge block 322 and a square block 312 on the adjacent sides, the wedge block 322 is provided with a hypotenuse and a right angle side parallel to the square block 312; the hypotenuse of the wedge block 322 can allow the square block 312 to pass over the wedge block 322, so that the main hoop 31 and the secondary hoop 32 are separated; the wedge block 322 uses the right angle side to allow the square block 312 to limit the main hoop 31 to approach the secondary hoop 32, so that the vertical rod 25 can move freely; A main plate 36 and a sub-plate 37, an elastic member 38 is provided between the main plate 36 and the sub-plate 37, the main plate 36 can be driven by the driving mechanism 7, and the sub-plate 37 is fixed to the main hoop 31; The trigger rod 39 is fixed to the main board 36, and the side wall is provided with a protrusion 391 for pressing the spring plate 311. The protrusion 391 enters between the positioning member 321 and the spring plate 311, and the spring plate 311 bends and causes the square block 312 to separate from the wedge block 322. Working principle of intermittent clamp 3: When the clamp 2 moves forward, the distance between the main hoop 31 and the auxiliary hoop 32 in the intermittent clamp 3 is large, and the vertical rod 25 can move vertically. At the same time, the auxiliary hoop 32 pushes the vertical rod 25 forward, so that the vertical rod 25 can drive the upper clamp 22 to rotate, thereby clamping or releasing the traction member 8 and transporting the traction member 8. When encountering an obstacle, the elastic member 38 contracts, the main plate 36 and the auxiliary plate 37 produce relative displacement, shortening the distance between the main plate 36 and the auxiliary plate 37, so that the trigger rod 39 squeezes the protrusion 391 between the positioning member 321 and the spring plate 311, and the square block 312 is disengaged from the right-angled side of the wedge block 322. When the clamp 2 retreats, the square block 312 contacts the hypotenuse of the wedge block 322, so that the distance between the main hoop 31 and the auxiliary hoop 32 is reduced, and the vertical rod 25 is clamped, so that the upper clamp 22 cannot rotate, so that the traction member 8 retreats subsequently, and the end of the traction member 8 is disengaged from the obstacle, which can increase the success rate of the traction member 8 to move forward and cross the obstacle next time; when the clamp 2 moves forward again, the square block 312 can directly pass over the wedge block 322 through the hypotenuse of the wedge block 322, so as to automatically release the lock on the vertical rod 25; For details, see Figure 5-Figure 7 When the clamp 2 moves forward, the driving mechanism 7 drives the main board 36 to move, and the main board 36 drives the auxiliary plate 37 to move through the elastic member 38, and the auxiliary plate 37 drives the main hoop 31 to move, and the main hoop 31 moves away from the auxiliary hoop 32. Since the auxiliary hoop 32 is subjected to the resistance of the vertical rod 25, the reset spring 33 is stretched, and the spring plate 311 and the positioning member 321 produce relative displacement, and the square block 312 passes over the wedge block 322 through the hypotenuse of the wedge block 322, and the main hoop 31 is converted from being close to the vertical rod 25 to being separated, so as to release the vertical limit of the vertical rod 25 (that is, the part of the vertical rod 25 close to the main hoop 31 is axially limited), and the sliding rod 34 and the limiting plate 35 move synchronously with the main hoop 31. When the limiting plate 35 contacts When the auxiliary hoop 32 is moved, the auxiliary hoop 32 moves accordingly, and the auxiliary hoop 32 contacts the vertical rod 25 and drives the vertical rod 25 to move; when the clamp 2 moves forward, the vertical limit of the vertical rod 25 can be released, so that the vertical rod 25 can move up and down, and the upper clamp 22 can release the traction member 8 when retreating, so as to prevent the traction member 8 from returning to the rear of the obstacle after passing through the obstacle, thereby reducing the risk of the traction member 8 being blocked again, and also preventing the traction member 8 from increasing the reciprocating distance, thereby delaying the efficiency of wearing the traction member 8; in addition, the trigger condition for releasing the vertical movement of the vertical rod 25 is associated with the forward power, without adding other power and operation, which can reduce the step switching time and operation time, and reduce the time for the traction member 8 to penetrate; When encountering an obstacle, the resistance at the end of the traction member 8 is limited, causing the traction member 8 to bend. At this time, the force of the end of the traction member 8 on the obstacle increases, and the obstacle is separated from the wire tube, so the threading work can continue. The same is true for the traction member 8 passing through the elbow of the wire tube; when the resistance of the traction member 8 reaches a certain value (the resistance continues to increase), the forward movement of the secondary hoop 32 is hindered and moves slowly or stops. The secondary hoop 32 transmits the resistance to the secondary plate 37 through the main hoop 31. The secondary plate 37 also slows down or stops, while the main board 36 maintains the moving speed. The distance between the main board 36 and the secondary plate 37 is shortened, and the elastic member 38 is compressed. At the same time, the trigger rod 39 fixed to the main board 36 drives the protrusion 391 to move toward the spring plate 311. After the protrusion 391 contacts the spring plate 311, the spring plate 311 is deformed to make the square block 312 separate from the wedge block 322. When the cam 322 is in the unlocking state, the spring 332 is in the unlocking state, and the spring 332 is in the unlocking state.

[0021] As a further solution of the present invention, the main plate 36 is rotatably provided with a pressure regulating bolt 41, the pressure regulating bolt 41 is threadedly connected with a pressure regulating plate 42, and the elastic member 38 is provided between the pressure regulating plate 42 and the auxiliary plate 37; Specifically, the pressure regulating bolt 41 is rotated to increase the distance between the pressure regulating plate 42 and the main board 36, increase the pre-pressure of the elastic member 38, and increase the force of the traction member 8 to trigger the compression of the elastic member 38 when it is subjected to resistance; it is prevented that the elastic member 38 is triggered before the traction member 8 bends, causing the vertical rod 25 to be locked in advance, and increasing the probability of the traction member 8 retreating and the total retreat stroke; on the contrary, the distance between the pressure regulating plate 42 and the main board 36 is reduced, and the pre-pressure of the elastic member 38 is reduced, so as to avoid excessive bending of the traction member 8, and the elastic member 38 cannot be triggered, resulting in the end of the traction member 8 always contacting with the obstacle, which increases the difficulty of the end of the traction member 8 passing through the obstacle; The pre-pressure of the elastic member 38 is adjusted according to the strength of the traction member 8. If the traction member 8 is strong, the distance between the pressure regulating plate 42 and the main board 36 is correspondingly increased, thereby increasing the pre-pressure of the elastic member 38. If the traction member 8 is weak, the distance between the pressure regulating plate 42 and the main board 36 is correspondingly shortened, thereby reducing the pre-pressure of the elastic member 38.

[0022] As a further solution of the present invention, the reciprocating mechanism 5 comprises: The sliding frame 51 is slidably arranged with the bracket 1, and the bottom is fixed with pins 52 penetrating the bracket 1, and the pins 52 are arranged in a linear array; A reciprocating groove 53 is provided on the lower clamp 26, and the pin 52 can be inserted into the reciprocating groove 53; The trigger plate 54 is fixed to the central rotating shaft 23 of the upper clamp 22, and a pin 55 is fixed to the bottom thereof to be slidably arranged with the slide frame 51. The trigger plate 54 can rotate with the upper clamp 22, and intermittently press the slide frame 51 downward through the pin 55, so that the pin 52 is inserted into the reciprocating groove 53; For details, see Figure 2 , Figure 3 and Fig.10 When the wire clamp 2 moves forward, the upper clamp 22 drives the trigger plate 54 to rotate through the rotating shaft 23, and the trigger plate 54 drives the pin 55 to press the slide frame 51 downward, and the slide frame 51 drives the pin 52 at the bottom to insert into the reciprocating groove 53, and the pin 52 alternately contacts the reciprocating groove 53. Under the action of the pin 52 and the reciprocating groove 53, the lower clamp 26 and the upper clamp 22 produce relative displacement along the axial direction of the rotating shaft 23, so that the traction member 8 rotates. The traction member 8 rotates when it is clamped, which can continuously change the position of the end of the traction member 8, further increasing the probability of the end of the traction member 8 passing over the obstacle.

[0023] As a further solution of the present invention, the upper clamp 22 is coaxially rotated and provided with a positioning commutator 6, which is used for positioning between the central rotation axis 23 of the upper clamp 22 and the slide rail 21, so that the upper clamp 22 can adjust the tilt direction, and the positioning commutator 6 includes: The reversing frame 61 is slidably disposed with the slide rail 21 and is rotatably disposed with the central rotating shaft 23 of the upper clamping member 22; The reversing bolt 62 has two ends that penetrate the reversing frame 61 and the slide rail 21, and the end is threadedly connected with a reversing nut 63; For details, see Figure 2 and Figure 3 , when the end of the traction member 8 passes through the other end and is bound with the cable, loosen the reversing nut 63 so that the reversing bolt 62 can slide with the slide rail 21, lift the connecting member 24 upward, and move forward to rotate the upper clamp 22 until the upper clamp 22 is vertical, press the connecting member 24 downward, and continue to move forward to tilt the upper clamp 22 in the backward direction, tighten the reversing nut 63, and the reversing bolt 62 limits the rotating shaft 23 through the reversing frame 61. At this time, the upper clamp 22 moves in the forward direction to release the traction member 8, and moves in the backward direction to clamp the traction member 8, so as to adjust the moving direction of the traction member 8, and the installation of the traction member 8 and the cable can be completed, and the operation process is simple.

[0024] As a further solution of the present invention, the driving mechanism 7 includes a reciprocating motor 71 disposed on the bracket 1, and a reciprocating screw 72 is installed on the output shaft of the reciprocating motor 71, and the reciprocating screw 72 is rotatably arranged with the bracket 1; the reciprocating screw 72 is threadedly connected to a reciprocating connector 73 fixed to the main board 36; Specifically, the reciprocating motor 71 drives the reciprocating screw 72 to rotate, and the reciprocating screw 72 drives the connecting member 73 to move, so that the intermittent clamp 3 drives the wire clamp 2 to move.

[0025] As a further solution of the present invention, the bracket 1 comprises: a side plate 11 and a guide rail 12, both ends of the guide rail 12 are fixed with a latch 13, the latch 13 is threadedly connected with a fastening bolt 14, and the fastening bolt 14 is sleeved with a gasket 15 located on the outside of the side plate 11; For details, see Fig.11 Tightening the fastening bolt 14 can pull the latch 13 toward the gasket 15, thereby fixing the guide rail 12 on the side plate 11. Conversely, the guide rail 12 is separated from the side plate 11, and the bracket 1 can be quickly disassembled to improve the portability of the device.

Claims

1. A cable installation device for building electrical installation, comprising a bracket (1) and a traction member (8), characterized in that: The bracket (1) is slidably provided with a wire clamp (2), and a driving mechanism (7) for driving the wire clamp (2) to move forward and backward along the bracket (1) is installed on the bracket (1); the wire clamp (2) clamps and rotates the traction member (8) when moving forward, and releases the traction member (8) when moving backward; The wire clamp (2) comprises: A slide rail (21) is slidably arranged with the bracket (1); The upper clamping members (22) are arranged in a linear array and are tilted, and the middle portion of the upper clamping members (22) is rotatably disposed via a rotating shaft (23) and a slide rail (21); The lower clamping member (26) is slidably disposed at the bottom of the slide rail (21) and is capable of generating relative displacement with the upper clamping member (22) along the axial direction of the rotating shaft (23) to rotate the traction member (8); A connecting piece (24) is used to connect adjacent upper clamping pieces (22) and is rotatably arranged on the top of the upper clamping piece (22). The connecting piece (24) is fixed with a vertical rod (25). The connecting piece (24) drives the upper hinge point of the upper clamping piece (22) to move so that the bottom of the upper clamping piece (22) rotates, thereby changing the distance between the bottom of the upper clamping piece (22) and the lower clamping piece (26), thereby achieving clamping and releasing of the traction piece (8). An intermittent clamp (3) is installed between the driving mechanism (7) and the vertical rod (25), and is sleeved with the vertical rod (25) for clamping the vertical rod (25). The intermittent clamp (3) can clamp the vertical rod (25) when the traction member (8) encounters an obstacle when moving forward, thereby limiting the vertical rod (25) from rising and falling. When the wire clamp (2) moves backward, the upper clamp (22) and the lower clamp (26) keep clamping the traction member (8), so that the end of the traction member (8) is free from the obstruction. The reciprocating mechanism (5) is arranged between the bracket (1) and the slide rail (21) and is used to drive the lower clamping member (26) to move reciprocatingly along the axial direction of the rotating shaft (23).

2. A cable installation device for building electrical installation according to claim 1, characterized in that: The intermittent clamp (3) comprises: The main hoop (31) and the auxiliary hoop (32) are both arranged on the side wall of the vertical rod (25), and the opening sides are respectively facing the forward direction and the backward direction of the slide rail (21), and a return spring (33) is fixed between the main hoop (31) and the auxiliary hoop (32); A sliding rod (34) is fixedly mounted on the main hoop (31); an end of the sliding rod (34) passes through the auxiliary hoop (32) and is fixedly mounted with a limiting piece (35); A positioning member (321) and a spring plate (311), wherein the positioning member (321) is fixedly arranged on both sides of the secondary hoop (32), and the spring plate (311) is fixedly arranged on both sides of the main hoop (31); a wedge block (322) and a square block (312) are respectively fixedly arranged on adjacent sides of the positioning member (321) and the spring plate (311); the wedge block (322) is provided with an oblique edge and a right-angled edge parallel to the square block (312); the oblique edge of the wedge block (322) enables the square block (312) to pass over the wedge block (322), so that the main hoop (31) and the secondary hoop (32) are separated; the wedge block (322) enables the square block (312) to limit the main hoop (31) to approach the secondary hoop (32) through the right-angled edge, so that the vertical rod (25) can move freely; a main plate (36) and a secondary plate (37), wherein an elastic member (38) is provided between the main plate (36) and the secondary plate (37), the main plate (36) can be driven by a driving mechanism (7), and the secondary plate (37) is fixed to the main hoop (31); The trigger rod (39) is fixed to the main board (36), and the side wall is provided with a protrusion (391) for pressing the spring plate (311). The protrusion (391) enters between the positioning member (321) and the spring plate (311), and the spring plate (311) bends and causes the square block (312) and the wedge block (322) to separate.

3. A cable installation device for building electrical installation according to claim 2, characterized in that: The main plate (36) is rotatably provided with a pressure regulating bolt (41), the pressure regulating bolt (41) is threadedly connected to a pressure regulating plate (42), and the elastic member (38) is arranged between the pressure regulating plate (42) and the auxiliary plate (37).

4. A cable installation device for building electrical installation according to claim 1, characterized in that: The reciprocating mechanism (5) comprises: A sliding frame (51) is slidably arranged with the bracket (1), and has pins (52) penetrating the bracket (1) fixedly provided at the bottom, wherein the pins (52) are arranged in a linear array; A reciprocating groove (53) is formed on the lower clamp (26), and the pin (52) can be inserted into the reciprocating groove (53); The trigger plate (54) is fixedly mounted on the central rotating shaft (23) of the upper clamp (22), and a pin shaft (55) is fixedly mounted on the bottom thereof and is slidably mounted on the slide frame (51). The trigger plate (54) can rotate along with the upper clamp (22), and intermittently press the slide frame (51) downward through the pin shaft (55), so that the pin (52) is inserted into the reciprocating groove (53).

5. A cable installation device for building electrical installation according to claim 1, characterized in that: The upper clamping member (22) is provided with a positioning commutator (6) for coaxial rotation. The positioning commutator (6) is used for positioning between the central rotating shaft (23) of the upper clamping member (22) and the slide rail (21), so that the upper clamping member (22) can adjust the tilting direction. The positioning commutator (6) comprises: A reversing frame (61) is slidably arranged with the slide rail (21) and is rotatably arranged with the central rotating shaft (23) of the upper clamping member (22); Both ends of the reversing bolt (62) penetrate the reversing frame (61) and the slide rail (21), and the end is threadedly connected with a reversing nut (63).

6. A cable installation device for building electrical installation according to claim 2, characterized in that: The driving mechanism (7) comprises a reciprocating motor (71) arranged on the bracket (1); a reciprocating screw (72) is mounted on the output shaft of the reciprocating motor (71); the reciprocating screw (72) is rotatably arranged with the bracket (1); and the reciprocating screw (72) is threadedly connected to a reciprocating connecting piece (73) fixed to the main board (36).

7. A cable installation device for building electrical installation according to claim 1, characterized in that: The bracket (1) comprises a side plate (11) and a guide rail (12), wherein both ends of the guide rail (12) are fixedly provided with a latch (13), the latch (13) is threadedly connected with a fastening bolt (14), and the fastening bolt (14) is sleeved with a gasket (15) located outside the side plate (11).

Images