An electrical wire threader for building electrical construction

Abstract

The present invention discloses an electrical wire threader for building electrical construction, comprising a wire threading bracket, a wire threading tube and a transmission gear located below the wire threading tube are arranged on the wire threading bracket, a notch for making way opposite to the transmission gear is provided at the bottom of the wire threading tube, the transmission gear and the wire threading bracket are rotatably connected, a coaxial slot disk is fixedly connected to one side of the transmission gear, a wedge-shaped block uniformly distributed in the circumferential direction is fixedly connected to the inner arc wall of the slot of the slot disk, and an output shaft coaxial with the transmission gear is rotatably connected to one side of the wire threading bracket. In the present invention, by arranging an operating plate, an output shaft, a cantilever, a swing arm, a hanging shaft, a wedge-shaped block and a traction member, the transmission gear has the function of rotational overload protection, can effectively protect the tooth groove at the bottom of the lead-in tube, and under the action of the traction member, the hanging shaft can also impact the wedge-shaped block when moving, so that the transmission gear can produce a pulse transmission effect, ensuring that the threading can be carried out continuously.

Description

Technical Field

[0001] The invention relates to the technical field of electrical construction equipment, and in particular to an electrical wire threader for building electrical construction. Background Art

[0002] Building electrical construction involves electrical systems such as lighting, network, power supply, and fire protection. During building electrical construction, in order to ensure the service life of the cables and the aesthetics of the construction, the cables will be inserted into wire conduits.

[0003] At present, the utility model with publication number CN116722488B proposes an electrical wire threader for building electrical construction, including: a supporting mechanism including a mounting plate and a cable mounting shaft and a lead mounting shaft mounted on the surface of the mounting plate, a surface of the lead mounting shaft is rotatably sleeved with a lead twisting disk, and the surface of the lead twisting disk is wound with a lead; a lifting mechanism is arranged on one side of the supporting mechanism, and the lifting mechanism includes a lifting bracket fixedly mounted on the surface of the mounting plate; a wire threading mechanism is arranged on one side of the supporting mechanism, and the wire threading mechanism includes a wire threading bracket installed inside the lifting bracket and a wire threading hard tube installed inside the wire threading bracket; by setting the wire threading mechanism, the lead between the pushing teeth and the wire tube is located inside the wire threading hard tube and the metal hose, and the side walls of the wire threading hard tube and the metal hose provide lateral support force for the lead, so that the lead will not bend when subjected to thrust, thereby allowing the lead and cable inside the wire tube to move smoothly.

[0004] However, the above-mentioned prior art still has the following deficiencies when used: 1. When a blockage appears in the wire tube buried in the building, causing the resistance to increase, the tooth groove at the bottom of the lead tube is easily damaged when the transmission gear continues to rotate, which not only makes it impossible to continue threading, but also causes the lead tube to be unusable; 2. The threading driving force is achieved by the meshing cooperation of the transmission gear and the tooth groove at the bottom of the lead tube. The transmission contact area is small, resulting in low threading force and low threading efficiency; 3. After the threading is completed, the cable will have a large contact area with the lead tube. When the lead tube is reeled in, the friction resistance of the cable will cause a large resistance to winding, and the cable is easily stretched and damaged.

[0005] Therefore, the present invention provides an electrical wire threader for building electrical construction. Summary of the invention

[0006] The purpose of the present invention is to solve the problems mentioned in the background technology and to propose an electrical wire threader for building electrical construction.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An electrical wire threader for building electrical construction comprises a wire threading bracket, a wire threading tube and a transmission gear located below the wire threading tube are provided on the wire threading bracket, a notch opposite to the transmission gear is provided at the bottom of the wire threading tube, the transmission gear and the wire threading bracket are rotatably connected, one side of the transmission gear is fixedly connected to a coaxial groove disk, the inner arc wall of the groove of the groove disk is fixedly connected to a wedge-shaped stopper evenly distributed in the circumferential direction, one side of the wire threading bracket is rotatably connected to an output shaft coaxial with the transmission gear, one end of the output shaft is fixedly connected to a cantilever, the free end of the cantilever is rotatably connected to a swing arm, one end of the swing arm is provided with a hanging shaft used in conjunction with the wedge-shaped stopper, a traction member is provided between the swing arm and the groove disk, and the traction member enables the swing arm to have a tendency to swing outward.

[0009] As a further description of the above technical solution:

[0010] The traction member comprises an iron ring and a magnet. The iron ring is nested on the inner wall of the slot plate and is located on the front side of the wedge-shaped stopper. The magnet is arranged on the front side of the swing arm and is detachably connected.

[0011] As a further description of the above technical solution:

[0012] A row of sockets is arranged on the front side of the swing arm, and a plug shaft which is plugged and matched with the sockets is fixedly connected to the back side of the magnet.

[0013] As a further description of the above technical solution:

[0014] The outside of the threading tube is rotatably connected to a transmission shaft located above the transmission gear. There are two transmission shafts located on both sides of the threading tube. An extrusion roller is sleeved on the outside of the transmission shaft. An extrusion notch opposite to the extrusion roller is opened on the outer peripheral wall of the threading tube.

[0015] As a further description of the above technical solution:

[0016] The threading bracket is provided with a driving shaft located above the threading tube, and a rear worm gear and a front worm gear are respectively welded to the tops of the two transmission shafts. A fixed sleeve is provided on the driving shaft with a rear worm and a front worm respectively engaged with the rear worm gear and the front worm gear, and the spiral rotation directions of the rear worm and the front worm are opposite.

[0017] As a further description of the above technical solution:

[0018] The extrusion rollers of the two transmission shafts are respectively fixedly sleeved with front spiral strips and rear spiral strips with different rotation directions, and the outer peripheral walls of the two transmission shafts are provided with rear threads and front threads with different rotation directions. The rotation directions of the rear threads and the front threads are opposite and they are respectively screwed together and connected with adjacent extrusion rollers. When threading, the extrusion rollers are close to the bottom of the transmission shaft, and when winding, the extrusion rollers are close to the top of the transmission shaft.

[0019] As a further description of the above technical solution:

[0020] The threading bracket is fixedly connected with a piston located above the threading tube, the bottom of the piston is connected with a suction cup located in the threading tube near the top, and the inner cavity of the suction cup is connected with the inner cavity of the piston.

[0021] As a further description of the above technical solution:

[0022] The piston comprises a plug tube and a plug disc located in the plug tube, the bottom of the plug tube is fixedly connected to the suction cup, the top of the plug disc is fixedly connected to a plug rod, and the top of the plug rod is welded with a handle located outside the plug tube.

[0023] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0024] 1. In the present invention, by arranging the operating plate, the output shaft, the cantilever, the rocker arm, the hanging shaft, the wedge-shaped block and the traction member, the transmission gear has the function of rotation overload protection, which can effectively protect the tooth groove at the bottom of the lead tube, and under the action of the traction member, the hanging shaft can also impact the wedge-shaped block when moving, so that the transmission gear can produce a pulse transmission effect, ensuring that the threading can be carried out continuously.

[0025] 2. In the present invention, a transmission shaft and an extrusion roller are arranged on both sides of the threading tube, and then a cutter and an extrusion notch are formed on both sides of the threading tube. When the transmission shaft rotates, the extrusion roller can be used to extrude and assist the wire tube in threading, thereby increasing the threading force and greatly improving the threading efficiency.

[0026] 3. In the present invention, the squeezing roller and the transmission shaft are arranged into a screw-connected structure, and then a piston and a suction cup are arranged on the threading bracket, wherein the suction cup has the function of sucking and fixing the cable in the lead tube. When the transmission gear and the transmission shaft rotate in the opposite direction to reel in the lead tube, the squeezing force of the squeezing roller on the lead tube is greatly reduced, and the cable is fixed. At this time, the resistance to reeling in the lead tube is greatly reduced, thereby improving the efficiency of reeling in the lead tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of an electrical wire threader for building electrical construction proposed by the present invention;

[0028] Figure 2 for Figure 1 The main view of

[0029] Figure 3 This is a schematic diagram of the structure of the cooperation of a wire threading tube, an output shaft and a squeezing roller of an electrical wire threader for building electrical construction proposed by the present invention;

[0030] Figure 4 for Figure 3The enlarged schematic diagram of the part "a" in the middle;

[0031] Figure 5 for Figure 3 The schematic diagram of the structure after removing the threading bracket;

[0032] Figure 6 This is a structural schematic diagram of the electric wire threader for building electrical construction proposed by the present invention, in which the piston is exploded and expanded and connected to the suction cup.

[0033] Legend:

[0034] 1. Threading bracket; 2. Threading hard tube; 21. Make way gap; 22. Extrusion gap; 3. Transmission gear; 4. Groove plate; 5. Wedge-shaped block; 6. Output shaft; 7. Cantilever; 8. Swing arm; 81. Socket; 9. Hanging shaft; 101. Traction piece; 1011. Iron ring; 1012. Magnet; 102. Transmission shaft; 1021. Rear thread; 1022. Front thread; 103. Extrusion roller; 1031. Front spiral pressure strip; 1032. Rear spiral pressure strip; 104. Rear worm gear; 105. Front worm gear; 106. Piston; 1061. Plug tube; 1062. Plug plate; 10621. Plug rod; 106211. Handle; 107. Suction cup; 108. Drive shaft; 1081. Rear worm; 1082. Front worm. DETAILED DESCRIPTION

[0035] 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.

[0036] Example 1

[0037] See also Figure 1-4 , an electrical wire threader for building electrical construction, the wire threader mainly solves the problem of wire threading and does not involve improvements to other parts, that is, other parts can use the existing technology mentioned in the background technology.

[0038] The present threader includes a threading bracket 1, which plays a role in positioning other structures in the present technical solution. Its appearance is not limited to the illustrated structure, that is, it can be set to a suitable structure according to the connection requirements. A threading hard tube 2 and a transmission gear 3 located below the threading hard tube 2 are provided on the threading bracket 1. The threading hard tube 2 plays the role of transmitting the lead tube. The structure of the lead tube adopts the structure of the prior art mentioned in the background technology, specifically, a row of tooth grooves are provided at the bottom outside the lead tube, and a butt joint is provided at the top. Moreover, the lead tube is a soft structure, and a clearance notch 21 is provided at the bottom of the threading hard tube 2 opposite to the transmission gear 3. The transmission gear 3 and the threading bracket 1 are rotatably connected, and the top of the transmission gear 3 is meshed with the tooth grooves at the bottom of the lead tube. In the prior art, when the transmission gear 3 rotates, the meshing action is used to directly drive the lead tube to move in the threading hard tube 2, providing the lead tube with a driving force for feeding the wire.

[0039] In the technical scheme, a coaxial slot disk 4 is fixedly connected to one side of the transmission gear 3, and a wedge-shaped block 5 evenly distributed in the circumferential direction is fixedly connected to the inner arc wall of the slot disk 4. One side of the wedge-shaped block 5 is welded to the inner wall of the slot disk 4, wherein a support tube penetrating the middle part of the transmission gear 3 is welded to one side of the threading bracket 1, and a bearing is arranged between the support tube and the transmission gear 3. An output shaft 6 coaxial with the transmission gear 3 is rotatably connected to one side of the threading bracket 1, and a cantilever 7 is fixedly connected to one end of the output shaft 6. Preferably, the middle part of one side of the cantilever 7 is welded to the output shaft 6, wherein the number of the wedge-shaped block 5 is an even number. A swing arm 8 is rotatably connected to the free end of the cantilever 7, and a hanging shaft 9 used in conjunction with the wedge-shaped block 5 is arranged at one end of the swing arm 8, and specifically, the hanging shaft 9 cooperates with the inclined surface and the back surface of the wedge-shaped block 5. When the hanging shaft 9 and the inclined surface abut against each other, a slipping problem will occur, resulting in the output shaft 6 being unable to drive the slot disk 4 to rotate through the hanging shaft 9.

[0040] Furthermore, a traction member 101 is provided between the swing arm 8 and the slot disk 4, and the traction member 101 makes the swing arm 8 have a tendency to swing outward, that is, the traction member 101 applies a thrust to the hanging shaft 9 that can stay on the inclined surface of the wedge-shaped block 5, and when the torsional force of the output shaft 6 is too large, the hanging shaft 9 will break away from the inclined surface of the wedge-shaped block 5. The specific structure of the traction member 101 is that it includes an iron ring 1011 and a magnet 1012, the iron ring 1011 is nested on the inner wall of the slot disk 4 and is located at the front side of the wedge-shaped block 5, the magnet 1012 is arranged at the front side of the swing arm 8 and is detachably connected, the magnetic attraction generated between the magnet 1012 and the iron ring 1011 makes the swing arm 8 press against the iron ring 1011, and the smaller the distance between the magnet 1012 and the iron ring 1011, the greater the pressure of the swing arm 8 on the iron ring 1011. Therefore, under the action of magnetic force, the hanging shaft 9 can push the groove plate 4 to rotate through the inclined surface on the wedge-shaped block 5, thereby driving the transmission gear 3 to rotate. When the rotation resistance of the transmission gear 3 is too large, the hanging shaft 9 will overcome the resistance and slip, and after slipping, it will impact the next wedge-shaped block 5 to generate impact force. This setting enables the threading device to have the function of threading overload protection, avoiding damage to the tooth groove on the lead tube, and can also generate threading impact force, so that the threading end of the lead tube can impact obstacles, thereby improving threading efficiency.

[0041] Furthermore, a row of sockets 81 are provided on the front side of the swing arm 8, and a plug shaft that plugs into and fits with the sockets 81 is fixedly connected to the back side of the magnet 1012. The plug-in fit between the plug shaft and the socket 81 enables a detachable connection between the magnet 1012 and the swing arm 8, and the magnetic attraction force can be adjusted by replacing different sockets 81.

[0042] Example 2

[0043] See also Figure 3 and Figure 5 , which is different from Example 1, is that the external rotation of the threading tube 2 is connected to a transmission shaft 102 located above the transmission gear 3. There are two transmission shafts 102 located on both sides of the threading tube 2. An extrusion roller 103 is sleeved on the outside of the transmission shaft 102. An extrusion notch 22 opposite to the extrusion roller 103 is opened on the outer peripheral wall of the threading tube 2. Part of the outer wall of the extrusion roller 103 is located in the extrusion notch 22 and then squeezes the lead tube in the threading tube 2 and the cable in the lead tube. When the two extrusion rollers 103 rotate in different directions, the friction force can be used to push the lead tube, thereby sharing the load of the transmission gear 3 and improving the threading force of the lead tube.

[0044] Furthermore, the threading bracket 1 is provided with a drive shaft 108 located above the threading tube 2, the drive shaft 108 is rotatably connected to the threading bracket 1, the tops of the two transmission shafts 102 are respectively welded with a rear worm gear 104 and a front worm gear 105, and the drive shaft 108 is fixedly sleeved with a rear worm 1081 and a front worm 1082 respectively engaged with the rear worm gear 104 and the front worm gear 105, the rear worm 1081 and the front worm 1082 have opposite spiral rotation directions, and when the drive shaft 108 rotates, it will drive the two transmission shafts 102 to rotate in different directions at the same time. When in use, a drive motor can be installed on the other side of the threading bracket 1, and the output shaft of the drive motor is fixedly connected to one end of the drive shaft 108.

[0045] Example 3

[0046] See also Figure 3 , Figure 5 and Figure 6 , since the squeezing rollers 103 in Examples 1 and 2 have the function of assisting threading, but there is a problem of large resistance to retrieving the lead tube after threading, the difference between this embodiment and Example 2 is that the squeezing rollers 103 of the two transmission shafts 102 are respectively fixedly sleeved with front spiral strips 1031 and rear spiral strips 1032 with different rotation directions, and the outer peripheral walls of the two transmission shafts 102 are provided with rear threads 1021 and front threads 1022 with different rotation directions. The rotation directions of the rear threads 1021 and the front threads 1022 are opposite and are respectively screwed together and connected with adjacent squeezing rollers 103. When threading, the squeezing roller 103 is close to the bottom of the transmission shaft 102. Specifically, when the transmission shaft 102 starts to rotate, the squeezing roller 103 thereon will be in a state of approximation to stillness and will descend at the same time. When it descends to the limit position, it will follow the rotation of the transmission shaft 102 to achieve threading assistance. When winding, the squeezing roller 103 is close to the top of the transmission shaft 102. Specifically, when the transmission shaft 102 rotates in the opposite direction, the squeezing roller 103 will rise under the screw transmission and then move away from the lead tube, so that the squeezing force of the squeezing roller 103 on the lead tube is greatly reduced, so that the cable in the lead tube is no longer squeezed, which facilitates the separation of the lead tube and the cable.

[0047] Furthermore, the threading bracket 1 is fixedly connected with a piston 106 located above the threading tube 2, and the bottom of the piston 106 is connected with a suction cup 107 located near the top of the threading tube 2. The suction cup 107 is arc-shaped. When in use, the suction cup 107 is located at the top of the lead tube, and the bottom of the suction cup 107 and the lead tube are connected.

[0048] The tops of the cables in the tube are relative to each other, and the inner cavity of the suction cup 107 is connected to the inner cavity of the piston 106. The function of the piston 106 is to vacuum the suction cup 107. When the suction cup 107 and the cable are adsorbed, the cable is fixed, which makes the winding of the lead tube more labor-saving and quick.

[0049] The above-mentioned piston 106 includes a plug tube 1061 and a plug disc 1062 located in the plug tube 1061. The bottom of the plug tube 1061 is fixedly connected to the suction cup 107, and the top of the plug disc 1062 is fixedly connected to a plug rod 10621. The top of the plug rod 10621 is welded with a handle 106211 located outside the plug tube 1061. When the handle 106211 is held and lifted up, negative pressure is formed in the plug tube 1061. When the handle 106211 is released, the suction cup 107 is exhausted.

[0050] Working principle: Before use, replace the threading bracket 1 raised in an electrical threading device for building electrical construction with publication number CN116722488B with the threading bracket 1, and then install and output the horizontal walk 6 on one side of the threading bracket 1 and fix one end of the principle cantilever 7 to connect the drive motor.

[0051] When in use, the lead tube is passed through the threading tube 2, the bottom of the lead tube is meshed with the transmission gear 3, and then the cable is introduced into the lead tube through the gap at the top of the lead tube, and one end of the cable is fixedly connected to the threading head of the threading end of the lead tube. When threading, the output shaft 6 is controlled to rotate, the hanging shaft 9 is pressed against the inclined surface of the wedge-shaped block 5, and the groove plate 4 rotates under the restriction of the magnetic attraction force, and the groove plate 4 drives the transmission gear 3 to rotate, and the lead tube is pushed in the threading tube 2. At this time, the normal threading action is performed, and the drive shaft 108 is controlled to rotate at the same time. The two transmission shafts 102 rotate in different directions. At this time, the two squeezing rollers 103 will drop under the rotation action, and will squeeze the lead tube after dropping to the limit position, and at the same time follow the transmission shaft 102 to rotate and use friction to push the lead tube. When the threading resistance increases, the hanging shaft 9 will slip and break away from the current wedge-shaped block 5, thereby preventing the transmission gear 3 from continuing to provide thrust to the tooth groove at the bottom of the lead tube. As the output shaft 6 continues to rotate, the hanging shaft 9 will impact the inclined surface on the next adjacent wedge-shaped block 5, forming a pulse threading effect and improving the threading efficiency.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An electrical wire threader for building electrical construction, comprising a wire threading bracket (1), the wire threading bracket (1) being provided with a wire threading tube (2) and a transmission gear (3) located below the wire threading tube (2), the bottom of the wire threading tube (2) being provided with a clearance notch (21) opposite to the transmission gear (3), characterized in that: The transmission gear (3) and the threading bracket (1) are rotatably connected. A coaxial groove plate (4) is fixedly connected to one side of the transmission gear (3). The inner arc wall of the groove of the groove plate (4) is fixedly connected to circumferentially evenly distributed wedge-shaped stoppers (5). An output shaft (6) coaxial with the transmission gear (3) is rotatably connected to one side of the threading bracket (1). A cantilever (7) is fixedly connected to one end of the output shaft (6). A swing arm (8) is rotatably connected to the free end of the cantilever (7). A hanging shaft (9) for use with the wedge-shaped stoppers (5) is provided at one end of the swing arm (8). The swing arm (8) A traction member (101) is arranged between the slot disk (4), and the traction member (101) causes the swing arm (8) to have a tendency to swing outwards. The traction member (101) comprises an iron ring (1011) and a magnet (1012). The iron ring (1011) is nested on the inner wall of the slot disk (4) and is located in front of the wedge-shaped stopper (5). The magnet (1012) is arranged in front of the swing arm (8) and is detachably connected. A row of plug holes (81) are provided on the front of the swing arm (8). The back of the magnet (1012) is fixedly connected to an insertion shaft that plugs into and fits with the plug holes (81).

2. The electrical wire threader for building electrical construction according to claim 1, characterized in that: The outside of the threading tube (2) is rotatably connected to a transmission shaft (102) located above the transmission gear (3); the number of the transmission shafts (102) is two and they are located on both sides of the threading tube (2); the outside of the transmission shaft (102) is sleeved with an extrusion roller (103); and the outer peripheral wall of the threading tube (2) is provided with an extrusion notch (22) opposite to the extrusion roller (103).

3. The electrical wire threader for building electrical construction according to claim 2, characterized in that: The threading bracket (1) is provided with a driving shaft (108) located above the threading tube (2); the tops of the two transmission shafts (102) are respectively welded with a rear worm gear (104) and a front worm gear (105); a rear worm (1081) and a front worm (1082) are fixedly sleeved on the driving shaft (108) and are respectively engaged with the rear worm gear (104) and the front worm gear (105); the spiral rotation directions of the rear worm (1081) and the front worm (1082) are opposite.

4. The electrical wire threader for building electrical construction according to claim 3, characterized in that: The squeezing rollers (103) of the two transmission shafts (102) are respectively fixedly sleeved with front spiral strips (1031) and rear spiral strips (1032) having different rotation directions. The outer peripheral walls of the two transmission shafts (102) are provided with rear threads (1021) and front threads (1022) having different rotation directions. The rear threads (1021) and the front threads (1022) have opposite rotation directions and are respectively screwed together and connected with adjacent squeezing rollers (103). When threading, the squeezing rollers (103) are close to the bottom of the transmission shaft (102). When winding, the squeezing rollers (103) are close to the top of the transmission shaft (102).

5. The electrical wire threader for building electrical construction according to claim 4, characterized in that: The threading bracket (1) is fixedly connected to a piston (106) located above the threading tube (2); the bottom of the piston (106) is connected to a suction cup (107) located near the top of the threading tube (2); the inner cavity of the suction cup (107) is connected to the inner cavity of the piston (106).

6. The electrical wire threader for building electrical construction according to claim 5, characterized in that: The piston (106) comprises a plug tube (1061) and a plug disc (1062) located inside the plug tube (1061); the bottom of the plug tube (1061) is fixedly connected to the suction cup (107); the top of the plug disc (1062) is fixedly connected to a plug rod (10621); the top of the plug rod (10621) is welded with a handle (106211) located outside the plug tube (1061).

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