A cable installation device for building electrical installation

Abstract

The present invention discloses a cable installation device for building electrical installation in the technical field of cable installation, comprising a bracket and a traction member: A wire clamp is slidably arranged on the bracket, and a driving mechanism is installed on the bracket; The wire clamp includes: A slide rail, which is slidably arranged with the bracket; An upper clamping member, the middle of the upper clamping member is rotatably arranged with the slide rail through a rotating shaft; A lower clamping member, which is slidably arranged at the bottom of the slide rail and can rotate the traction member; A connecting member, which is used to connect adjacent upper clamping members and is rotatably arranged at the top of the upper clamping member, and a vertical rod is fixedly arranged on the connecting member; An intermittent fixture, which is installed between the driving mechanism and the vertical rod and is sleeved with the vertical rod; A reciprocating mechanism, which is arranged between the bracket and the slide rail and is used to drive the lower clamping member to reciprocate; Through reciprocating motion, the upper clamping member and the lower clamping member intermittently rotate to convey the traction member, pull the traction member backward when encountering an obstacle, and separate the end of the traction member from the obstacle, 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.

Description

Technical Field

[0001] The present invention relates to the technical field of cable installation, and particularly to a cable installation device for building electrical installation. Background Art

[0002] Building electrical construction includes electrical systems such as lighting, network, power supply, and fire protection. To protect the cables, generally the cables are threaded into the conduit pipes. Before building electrical construction, the conduit pipes are laid along the planned route; but to ensure the aesthetics of the building, the conduit pipes are connected in advance and embedded in the wall body; during the wall pouring process, in order to prevent formwork bulging, reinforcement ribs are added to both side formworks. The reinforcement ribs are arranged on the outer sides of both side formworks and the formwork stress surface is increased by the connection method of tie rods; when a high density of tie rods pass through the formwork, it is inevitable that some tie rods will damage the conduit pipes between the formworks, resulting in some mortar entering the conduit pipes along the damaged parts of the conduit pipes. After the mortar entering the conduit pipes is plasticized, it will interfere with the installation of the cables;

[0003] The principles of existing cable threading devices are divided into two types; in both methods, the end of the traction member is first inserted from one end and passed out from the other end, and the cable is tied to one end, and the cable is threaded into the conduit pipe through the traction member. Among them, the most commonly used traction member is steel wire;

[0004] One is the pressure type. One end of the conduit pipe is blocked by a rubber-like plug, and then the plug and the end of the traction member are extruded from the other end of the conduit pipe through gas pressurization. When the conduit pipe is damaged, there is a risk of gas leakage in the conduit pipe. The gas leakage will cause the pressure in the conduit pipe to decrease, weakening the driving force of the plug to move forward. In addition, the plasticized mortar greatly hinders the forward movement of the plug, causing the plug to stay in the conduit pipe and increasing the difficulty of installing the traction member;

[0005] The other is the direct drive type. The traction member is conveyed into the conduit pipe through the relative movement between the sleeves. When the end of the traction member moves to the damaged part of the conduit pipe, the end of the traction member is easily blocked by the plasticized mortar, resulting in the traction member being unable to pass out from the other end of the conduit pipe in a short time;

[0006] Secondly, the most primitive method is that the construction worker manually threads the traction member into the conduit pipe. When the traction member encounters an obstacle and cannot move forward, generally the cable is rotated to misalign the end of the traction member with the obstacle. However, manually rotating the traction member is not only difficult but also causes great damage to the hands of the construction worker. Summary of the Invention

[0007] The technical problem of the present invention is to provide a cable installation device for building electrical installation. By reciprocating motion, the upper clamp and the lower clamp intermittently rotate to convey the traction member. When encountering an obstacle, the traction member is pulled backward to disengage the end of the traction member from the obstacle, 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 tube.

[0008] To achieve the above object, the present invention provides the following technical solutions: A cable installation device for building electrical installation, including a bracket and a traction member: A wire clamp is slidably arranged on the bracket, and a driving mechanism for driving the wire clamp to move forward and backward along the bracket is installed on the bracket; When the wire clamp moves forward, it clamps and rotates the traction member, and when it moves backward, it releases the traction member;

[0009] The wire clamp includes:

[0010] A slide rail, which is slidably arranged with the bracket;

[0011] Upper clamps, arranged in a linear array and inclined, and the middle of the upper clamps is rotatably arranged with the slide rail through a rotating shaft;

[0012] Lower clamps, slidably arranged at the bottom of the slide rail, capable of generating relative displacement with the upper clamps along the axial direction of the rotating shaft to rotate the traction member;

[0013] Linking members, used to connect adjacent upper clamps, and rotatably arranged on the top of the upper clamps, and vertical rods are fixedly arranged on the linking members; The linking members drive the movement of the hinge points above the upper clamps, causing the bottom of the upper clamps to rotate, changing the distance between the bottom of the upper clamps and the lower clamps, and realizing the clamping and releasing of the traction member;

[0014] An intermittent fixture, installed between the driving mechanism and the vertical rod, and sleeved with the vertical rod, for clamping the vertical rod. The intermittent fixture can clamp the vertical rod when the traction member encounters resistance during forward movement, limit the lifting of the vertical rod. When the wire clamp moves backward, the upper clamp and the lower clamp keep clamping the traction member, causing the end of the traction member to disengage from the blockage;

[0015] A reciprocating mechanism, arranged between the bracket and the slide rail, for driving the lower clamp to reciprocate along the axial direction of the rotating shaft.

[0016] As a further solution of the present invention, the intermittent fixture includes:

[0017] A main hoop and a sub-hoop, both arranged on the side wall of the vertical rod, and the opening sides face the forward direction and the backward direction of the slide rail respectively. A return spring is fixedly arranged between the main hoop and the sub-hoop;

[0018] A slide rod, fixedly arranged with the main hoop, and the end of the slide rod penetrates through the sub-hoop and is fixedly provided with a limit piece;

[0019] A positioning member and a spring plate. The positioning member is fixedly arranged on both sides of the secondary hoop, and the spring plate is fixedly arranged on both sides of the main hoop. Wedge-shaped blocks and square blocks are respectively fixedly arranged on the adjacent sides of the positioning member and the spring plate. The wedge-shaped block is provided with an inclined side and a right-angled side parallel to the square block. The inclined side of the wedge-shaped block allows the square block to cross over the wedge-shaped block, separating the main hoop from the secondary hoop. The square block can limit the main hoop from approaching the secondary hoop through the right-angled side of the wedge-shaped block, enabling the vertical rod to move freely.

[0020] A main board and a secondary board. An elastic member is arranged between the main board and the secondary board. The main board can be driven by a driving mechanism, and the secondary board is fixedly arranged with the main hoop.

[0021] A trigger rod is fixedly arranged with the main board, and a protrusion for squeezing the spring plate is arranged on the side wall. The protrusion enters between the positioning member and the spring plate, causing the spring plate to bend and separating the square block from the wedge-shaped block.

[0022] As a further solution of the present invention, a pressure-regulating bolt is rotatably arranged on the main board. 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 secondary board.

[0023] As a further solution of the present invention, the reciprocating mechanism includes:

[0024] A sliding frame is slidably arranged with the bracket, and a pin penetrating the bracket is fixedly arranged at the bottom. The pins are arranged in a linear array.

[0025] A reciprocating groove is formed on the lower clamping member, and the pin can be inserted into the reciprocating groove.

[0026] A trigger plate is fixedly arranged with the central rotating shaft of the upper clamping member, and a pin shaft slidably arranged with the sliding frame is fixedly arranged at the bottom. The trigger plate can rotate with the upper clamping member and intermittently press down the sliding frame through the pin shaft, causing the pin to be inserted into the reciprocating groove.

[0027] As a further solution of the present invention, a positioning and reversing device is rotatably arranged coaxially with the upper clamping member. The positioning and reversing device is used for positioning between the central rotating shaft of the upper clamping member and the sliding rail, enabling the upper clamping member to adjust the inclination direction. The positioning and reversing device includes:

[0028] A reversing frame is slidably arranged with the sliding rail and rotatably arranged with the central rotating shaft of the upper clamping member.

[0029] A reversing bolt penetrates through the reversing frame and the sliding rail at both ends, and a reversing nut is threadedly connected to the end.

[0030] As a further solution of the present invention, the driving mechanism includes a reciprocating motor arranged on the bracket. A reciprocating screw is installed on the output shaft of the reciprocating motor, and the reciprocating screw is rotatably arranged with the bracket. The reciprocating screw is threadedly connected with a reciprocating connecting member fixedly arranged with the main board.

[0031] 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.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] In the present invention, the vertical rod drives the top of the upper clamping member to move, the upper clamping member rotates around the axis of the rotating shaft, and the bottom of the upper clamping member approaches the lower clamping member, thereby realizing the clamping of the traction member, and the clamping size is not limited, improving the application range of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 Schematic diagram of the overall structure of the present invention;

[0040] Figure 2 Schematic diagram of the structure of the wire clamp of the present invention and its connection relationship;

[0041] Figure 3 Schematic diagram of the cross-sectional structure of the wire clamp of the present invention;

[0042] Figure 4 Schematic diagram of the principle structure of the wire clamp of the present invention;

[0043] Figure 5 Schematic diagram of the intermittent fixture of the present invention;

[0044] Figure 6 For the present invention Figure 5 Enlarged structure diagram at position A;

[0045] Figure 7 Schematic diagram of the principle structure of the intermittent fixture of the present invention;

[0046] Figure 8 Schematic diagram of the structure of the main hoop of the intermittent fixture of the present invention and its connection relationship;

[0047] Figure 9 Schematic diagram of the structure of the main board of the intermittent fixture of the present invention and its connection relationship;

[0048] Figure 10 Schematic diagram of the structure of the bracket of the present invention and its connection relationship;

[0049] Figure 11 For the present invention Figure 10 Enlarged structure diagram at position B;

[0050] In the drawings, the annotations of each reference numeral are as follows:

[0051] 1. Bracket; 11. Side plate; 12. Guide rail; 13. Plug pin; 14. Fastening bolt; 15. Gasket; 2. Wire clamp; 21. Slide rail; 22. Upper clamping member; 23. Rotating shaft; 24. Connecting member; 25. Vertical rod; 26. Lower clamping member; 3. Intermittent clamp; 31. Main hoop; 311. Spring plate; 312. Square block; 32. Sub-hoop; 33. Return spring; 321. Positioning member; 322. Wedge block; 34. Slide bar; 35. Limiting piece; 36. Main board; 37. Sub-board; 38. Elastic member; 39. Trigger rod; 391. Protrusion; 41. Pressure regulating bolt; 42. Pressure regulating plate; 5. Reciprocating mechanism; 51. Slide frame; 52. Pin; 53. Reciprocating groove; 54. Trigger plate; 55. Pin shaft; 6. Positioning commutator; 61. Commutator frame; 62. Commutating bolt; 63. Commutating nut; 7. Driving mechanism; 71. Reciprocating motor; 72. Reciprocating screw; 73. Connecting member; 8. Tractive member. Detailed implementation mode

[0052] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0053] Please refer to Figures 1 - 11 , the present invention provides a technical solution: a cable installation device for building electrical installation, including a bracket 1 and a tractive member 8: a wire clamp 2 is slidably arranged on the bracket 1, and a driving mechanism 7 for driving the wire clamp 2 to advance and retreat along the bracket 1 is installed on the bracket 1; when the wire clamp 2 advances, it clamps and rotates the tractive member 8, and when it retreats, it releases the tractive member 8;

[0054] Specifically, refer to Figure 1 , pass the tractive member 8 through the wire clamp 2, and pass the end of the tractive member 8 passing through the wire clamp 2 into the wire pipe. The driving mechanism 7 drives the wire clamp 2 to advance ( Figure 1 the direction indicated by the arrow in), the wire clamp 2 clamps the tractive member 8 and drives it to advance, so that the tractive member 8 moves into the wire pipe. When the wire clamp 2 retreats with the driving mechanism 7, the wire clamp 2 releases the tractive member 8, and continuously conveys the tractive member 8 into the wire pipe in a reciprocating cycle until the end of the tractive member 8 passes out from the other end of the wire pipe. At this time, bind the cable to be installed to the tractive member 8, change the direction of the wire clamp 2, so that the wire clamp 2 clamps the tractive member 8 when it retreats, and realize reverse pulling of the tractive member 8 until the end of the tractive member 8 passes out of the wire pipe;

[0055] The wire clamp 2 includes:

[0056] A slide rail 21, which is slidably arranged with the bracket 1;

[0057] The upper clamping member 22 is arranged in a linear array and is inclined. The middle part of the upper clamping member 22 is rotatably arranged on the slide rail 21 through a rotating shaft 23;

[0058] The lower clamping member 26 is slidably arranged at the bottom of the slide rail 21 and can generate a relative displacement with the upper clamping member 22 along the axial direction of the rotating shaft 23 to rotate the traction member 8;

[0059] The connecting member 24 is used to connect adjacent upper clamping members 22 and is rotatably arranged at the top of the upper clamping member 22. A vertical rod 25 is fixedly arranged on the connecting member 24; the connecting member 24 drives the movement of the hinge point above the upper clamping member 22, so that the bottom of the upper clamping member 22 rotates, changing the distance between the bottom of the upper clamping member 22 and the lower clamping member 26, and realizing the clamping and loosening of the traction member 8;

[0060] The intermittent fixture 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 fixture 3 can clamp the vertical rod 25 when the traction member 8 advances and encounters resistance, limiting the lifting of the vertical rod 25. When the wire clamping device 2 retreats, the upper clamping member 22 and the lower clamping member 26 keep clamping the traction member 8, so that the end of the traction member 8 is separated from the blockage;

[0061] 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 reciprocate axially along the rotating shaft 23;

[0062] Specifically, referring to Figures 1 - 4 When the wire clamping device 2 advances, the driving mechanism 7 drives the vertical rod 25 to move in the forward direction through the intermittent fixture 3. The vertical rod 25 drives the top of the upper clamping member 22 to move. The upper clamping member 22 rotates around the axis of the rotating shaft 23 (the rotation direction is the direction of the solid arrow in Figure 4 ), and the bottom of the upper clamping member 22 approaches the lower clamping member 26, thereby realizing the clamping of the traction member 8; when the upper clamping member 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 clamping member 22 is restricted and cannot continue to rotate. The upper clamping member 22 drives the slide rail 21 to move forward through the rotating shaft 23. The slide rail 21 drives the lower clamping member 26 to move synchronously. The reciprocating mechanism 5 drives the relative movement between the lower clamping member 26 and the slide rail 21 (the movement 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 end of the cable until the slide rail 21 moves to the limit position;

[0063] When the wire clamping device 2 retreats, the driving mechanism 7 drives the vertical rod 25 to move in the backward direction through the intermittent fixture 3. The vertical rod 25 drives the top of the upper clamping member 22 to retreat. The upper clamping member 22 rotates in the reverse direction around the rotating shaft 23 (the rotation direction is Figure 4The 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;

[0064] 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;

[0065] 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;

[0066] 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.

[0067] As a further solution of the present invention, the intermittent fixture 3 comprises:

[0068] 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;

[0069] The sliding rod 34 is fixedly arranged with the main hoop 31. The end of the sliding rod 34 penetrates through the auxiliary hoop 32 and is fixedly provided with a limiting piece 35.

[0070] The positioning member 321 and the spring plate 311. The positioning member 321 is fixedly arranged on both sides of the auxiliary hoop 32, and the spring plate 311 is fixedly arranged on both sides of the main hoop 31. Wedge-shaped blocks 322 and square blocks 312 are respectively fixedly arranged on the adjacent sides of the positioning member 321 and the spring plate 311. The wedge-shaped block 322 is provided with an inclined side and a right-angled side parallel to the square block 312. The inclined side of the wedge-shaped block 322 allows the square block 312 to cross over the wedge-shaped block 322, so that the main hoop 31 and the auxiliary hoop 32 move away from each other. The square block 312 can limit the main hoop 31 to approach the auxiliary hoop 32 through the right-angled side of the wedge-shaped block 322, so that the vertical rod 25 can move freely.

[0071] The main board 36 and the auxiliary board 37. An elastic member 38 is arranged between the main board 36 and the auxiliary board 37. The main board 36 can be driven by the driving mechanism 7, and the auxiliary board 37 is fixedly arranged with the main hoop 31.

[0072] The trigger rod 39 is fixedly arranged with the main board 36, and a protrusion 391 for squeezing the spring plate 311 is arranged on the side wall. The protrusion 391 enters between the positioning member 321 and the spring plate 311, and the spring plate 311 bends to separate the square block 312 from the wedge-shaped block 322.

[0073] The working principle of the intermittent fixture 3:

[0074] When the wire clamp 2 advances, the distance between the main hoop 31 and the auxiliary hoop 32 in the intermittent fixture 3 is relatively large. 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 clamping member 22 to rotate, realizing the clamping or loosening of the traction member 8 and realizing the conveying of the traction member 8.

[0075] When encountering an obstacle, the elastic member 38 contracts, and the main board 36 and the auxiliary board 37 generate relative displacement, shortening the distance between the main board 36 and the auxiliary board 37. The trigger rod 39 squeezes the protrusion 391 between the positioning member 321 and the spring plate 311. The square block 312 is separated from the contact with the right-angled side of the wedge-shaped block 322. When the wire clamp 2 retreats, the square block 312 contacts the inclined side of the wedge-shaped block 322, reducing the distance between the main hoop 31 and the auxiliary hoop 32 and clamping the vertical rod 25, making the upper clamping member 22 unable to rotate, and the traction member 8 retreats accordingly. The end of the traction member 8 is separated from the contact with the obstacle, which can increase the success rate of the next advancement of the traction member 8 over the obstacle. When the wire clamp 2 advances again, the square block 312 can directly cross over the wedge-shaped block 322 through the inclined side of the wedge-shaped block 322, realizing the automatic unlocking of the vertical rod 25.

[0076] Specifically, refer to Figures 5 - 7, when the wire clamp 2 moves forward, the driving mechanism 7 drives the main board 36 to move. The main board 36 drives the auxiliary board 37 to move through the elastic member 38. The auxiliary board 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 resisted by the vertical rod 25, the return spring 33 is stretched, and a relative displacement occurs between the spring plate 311 and the positioning member 321. Moreover, the square block 312 crosses the wedge block 322 along the hypotenuse of the wedge block 322, and the main hoop 31 changes from being in close contact with the vertical rod 25 to being separated, realizing the release of the vertical (i.e., the part of the vertical rod 25 close to the main hoop 31 in the axial direction) limit of the vertical rod 25. The sliding rod 34 and the limiting piece 35 move synchronously with the main hoop 31. When the limiting piece 35 contacts the auxiliary hoop 32, the auxiliary hoop 32 moves accordingly. After the auxiliary hoop 32 contacts the vertical rod 25, it drives the vertical rod 25 to move; when the wire clamp 2 moves forward, the vertical limit of the vertical rod 25 can be released, enabling the vertical rod 25 to move up and down. The upper clamping member 22 can release the traction member 8 when it moves backward, avoiding the traction member 8 from moving backward to the rear of the obstacle after passing through the obstacle, reducing the risk of the traction member 8 being blocked again, and also being able to avoid an increase in the reciprocating distance of the traction member 8 and delaying the efficiency of threading the traction member 8; in addition, associating the trigger condition for releasing the vertical movement of the vertical rod 25 with the forward driving force, without the need to add other power and operations, can reduce the step switching time and operation time, and reduce the time for the traction member 8 to penetrate.

[0077] When encountering an obstacle, the resistance received by the end of the traction member 8 is limited, which will cause 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 detaches from the wire tube, and the wire threading work can continue. The same principle applies to the traction member 8 passing through the elbow of the wire tube. When the resistance received by the traction member 8 reaches a certain value (the resistance continues to increase), the forward movement of the auxiliary hoop 32 is blocked and it moves slowly or stops moving. The auxiliary hoop 32 transmits the resistance to the auxiliary plate 37 through the main hoop 31. The auxiliary plate 37 also slows down or stops moving, while the main plate 36 maintains its moving speed, and the distance between the main plate 36 and the auxiliary plate 37 shortens, and the elastic member 38 is compressed. At the same time, the trigger rod 39 fixed to the main plate 36 drives the protrusion 391 to move towards the spring plate 311. After the protrusion 391 contacts the spring plate 311, the spring plate 311 deforms, causing the square block 312 to disengage from the wedge block 322. At this time, the driving mechanism 7 changes direction, and the main plate 36 moves in the reverse direction. The protrusion 391 disengages from the spring plate 311, and the spring plate 311 rebounds. The reset of the square block 312 is blocked by the wedge block 322, and the end face of the square block 312 away from the spring plate 311 rests on the wedge block 322. As the main plate 36 retreats, after the elastic member 38 returns to its free state, the auxiliary plate 37 drives the main hoop 31 to move in the reverse direction. The reset spring 33 contracts, causing the square block 312 to abut against the inclined surface of the wedge block 322. The resilience of the spring plate 311 squeezes the square block 312 against the inclined edge of the wedge block 322. The wedge block 322 squeezes the auxiliary hoop 32 towards the main hoop 31 through the positioning member 321, so that the vertical rod 25 between the main hoop 31 and the auxiliary hoop 32 is clamped, preventing the upper clamping member 22 from loosening the traction member 8 when retreating, realizing the retreat of the traction member 8 and disengaging from the contact with the obstacle.

[0078] As a further solution of the present invention, a pressure regulating bolt 41 is rotatably provided on the main plate 36. The pressure regulating bolt 41 is threadedly connected with a pressure regulating plate 42. The elastic member 38 is arranged between the pressure regulating plate 42 and the auxiliary plate 37.

[0079] Specifically, rotate the pressure regulating bolt 41 to increase the distance between the pressure regulating plate 42 and the main plate 36, increase the pre-pressure of the elastic member 38, and increase the force for triggering the compression of the elastic member 38 by the resistance received by the traction member 8. Avoid the elastic member 38 being triggered before the traction member 8 bends, resulting in the premature locking of the vertical rod 25, increasing the probability of the traction member 8 retreating and the total retreat stroke. On the contrary, reduce the distance between the pressure regulating plate 42 and the main plate 36, reduce the pre-pressure of the elastic member 38, and avoid the traction member 8 being overly bent and unable to trigger the elastic member 38, resulting in the end of the traction member 8 always being in contact with the obstacle, increasing the difficulty of the end of the traction member 8 passing through the obstacle.

[0080] The pre-pressure of the elastic member 38 is adjusted according to the strength of the traction member 8. When the strength of the traction member 8 is large, the distance between the pressure regulating plate 42 and the main plate 36 is correspondingly increased, and the pre-pressure of the elastic member 38 is increased. When the strength of the traction member 8 is small, the distance between the pressure regulating plate 42 and the main plate 36 is correspondingly shortened, and the pre-pressure of the elastic member 38 is reduced.

[0081] As a further solution of the present invention, the reciprocating mechanism 5 includes:

[0082] A sliding frame 51 is slidably arranged on the bracket 1, and a pin 52 penetrating the bracket 1 is fixedly arranged at the bottom, and the pins 52 are arranged in a linear array;

[0083] A reciprocating groove 53 is opened on the lower clamping member 26, and the pin 52 can be inserted into the reciprocating groove 53;

[0084] A trigger plate 54 is fixedly arranged on the central rotating shaft 23 of the upper clamping member 22, and a pin shaft 55 slidably arranged with the sliding frame 51 is fixedly arranged at the bottom. The trigger plate 54 can rotate with the upper clamping member 22, and intermittently press down the sliding frame 51 through the pin shaft 55 to make the pin 52 insert into the reciprocating groove 53;

[0085] Specifically, referring to Figure 2 、 Figure 3 and Figure 10 , when the wire clamp 2 advances, the upper clamping member 22 drives the trigger plate 54 to rotate through the rotating shaft 23. The trigger plate 54 drives the pin shaft 55 to squeeze the sliding frame 51 downward. The sliding frame 51 drives the pin 52 at the bottom to insert into the reciprocating groove 53. The pin 52 alternately contacts the reciprocating groove 53. Under the action of the pin 52 and the reciprocating groove 53, the lower clamping member 26 and the upper clamping member 22 generate a relative displacement along the axis direction of the rotating shaft 23, so that the traction member 8 rotates. When the traction member 8 is clamped and rotates, the position of the end of the traction member 8 can be continuously changed, further increasing the probability that the end of the traction member 8 crosses the obstacle.

[0086] As a further solution of the present invention, a positioning commutator 6 is coaxially and rotatably arranged on the upper clamping member 22. The positioning commutator 6 is used for positioning between the central rotating shaft 23 of the upper clamping member 22 and the sliding rail 21, so that the upper clamping member 22 can adjust the inclination direction. The positioning commutator 6 includes:

[0087] A commutation frame 61 is slidably arranged on the sliding rail 21 and rotatably arranged with the central rotating shaft 23 of the upper clamping member 22;

[0088] A commutation bolt 62 penetrates through the commutation frame 61 and the sliding rail 21 at both ends, and a commutation nut 63 is threadedly connected to the end;

[0089] Specifically, referring to Figure 2 and Figure 3, after the end of the traction member 8 passes through from the other end and is bound to the cable, loosen the reversing nut 63 so that the reversing bolt 62 can slide on the slide rail 21. Lift the connecting member 24 upward and move forward to make the upper clamping member 22 rotate until the upper clamping member 22 is vertical. Press the connecting member 24 downward and continue to move forward to make the upper clamping member 22 tilt backward. Tighten the reversing nut 63. The reversing bolt 62 limits the rotating shaft 23 through the reversing frame 61. At this time, when the upper clamping member 22 moves forward, the traction member 8 is released, and when it moves backward, the traction member 8 is clamped, realizing the adjustment of the moving direction of the traction member 8, and the threading of the traction member 8 and the installation of the cable can be completed, and the operation process is simple.

[0090] As a further solution of the present invention, the driving mechanism 7 includes a reciprocating motor 71 arranged on the bracket 1. 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 with a reciprocating connecting member 73 fixedly arranged on the main board 36;

[0091] Specifically, the reciprocating motor 71 drives the reciprocating screw 72 to rotate, and the reciprocating screw 72 drives the connecting member 73 to move, realizing the movement of the wire clamping device 2 driven by the intermittent fixture 3.

[0092] As a further solution of the present invention, the bracket 1 includes: side plates 11 and guide rails 12. Plug pins 13 are fixedly arranged at both ends of the guide rails 12. The plug pins 13 are threadedly connected with fastening bolts 14, and gaskets 15 located outside the side plates 11 are sleeved on the fastening bolts 14;

[0093] Specifically, referring to Figure 11 , tightening the fastening bolt 14 can pull the plug pin 13 towards the gasket 15, thereby fixing the guide rail 12 on the side plate 11. On the contrary, the guide rail 12 is separated from the side plate 11, and the bracket 1 can be quickly disassembled, improving 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).

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