A lead-in device for building electrical installation

Abstract

A wire lead device for building electrical installation includes: a wire tube, a bracket and a support platform, the bracket is mounted on the support platform, and also includes: a lower pressure roller rotatably connected to the bracket, the side wall of the lower pressure roller is provided with a driving shaft; an upper pressure roller slidably connected to the bracket; a plurality of positioning sleeves sleeved on the upper pressure roller and the lower pressure roller; a wire lead rod assembly clamped between the upper pressure roller and the lower pressure roller, the wire lead rod assembly includes a top rod, a standard rod and a tail rod; a guide head arranged at the top of the top rod, a magnet is arranged at the front end of the guide head; and a protective mechanism arranged at the end of the wire tube. The guide head first enters the wire tube, and moves forward with the upper pressure roller and the lower pressure roller squeezing the top rod and the standard rod, the guide head penetrates into the wire tube and moves, and the guide wheel helps the guide head and the top rod to change direction. Pulling the corrugated tube changes the direction of the port, which is convenient for the guide head to enter, and the corrugated tube is relatively soft and not easy to scratch the wire.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical installation, and more specifically, particularly to a lead-in device for building electrical installation. Background Art

[0002] Electricity is an important material basis for developing production and improving people's living standards. In electrical engineering wiring construction operations, the wires should be completely protected by the protective tube, so it is necessary to introduce the cables one by one into the protective tube.

[0003] The current method of wire leading is generally to manually insert the lead tube into the wire tube, and then bring the wire out. When the wire tube is bent, it is more laborious and it is difficult to pass the lead rod through the wire tube. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the utility model aims to provide a building electrical installation lead-in device, which can stably pass a traction rod through a wire tube.

[0005] A wire lead device for building electrical installation comprises: a wire tube, a bracket and a support platform, wherein the bracket is mounted on the support platform, and further comprises: a lower pressure roller rotatably connected to the bracket, wherein the side wall of the lower pressure roller is provided with a driving shaft; an upper pressure roller slidably connected to the bracket; a plurality of positioning sleeves sleeved on the upper pressure roller and the lower pressure roller; a wire lead rod assembly clamped between the upper pressure roller and the lower pressure roller, wherein the wire lead rod assembly comprises a top rod, a standard rod and a tail rod; a guide head arranged at the top of the top rod, wherein a magnet is arranged at the front end of the guide head; and a protective mechanism arranged at the end of the wire tube.

[0006] Furthermore, sliding frames are provided on both sides of the front end of the bracket, a baffle is provided in the middle of the sliding frame, both sides of the upper pressure roller are provided on the upper part of the baffle, and both sides of the lower pressure roller are provided on the lower part of the baffle.

[0007] Furthermore, a slide rail is provided on the inner wall of the sliding frame, and the slide rail is provided above the baffle. A slider is slidably connected to the slide rail, a spring is fixed to the bottom of the slider, and the other end of the spring is fixed to the top of the baffle. The upper pressure roller is rotatably connected to the slider.

[0008] Furthermore, the positioning sleeve is an elastic leather sleeve, and the positioning sleeve can slide on the side walls of the upper pressing roller and the lower pressing roller.

[0009] Furthermore, a bolt is provided at the rear end of the push rod, the bolts are provided at both ends of the standard rod, and the bolt is provided at the front end of the tail rod, and the bolt can be threadedly connected with the sleeve.

[0010] Furthermore, the side wall of the driving shaft is detachably connected with a rotating member.

[0011] Furthermore, the guide head side wall annular array has a plurality of guide wheels.

[0012] Furthermore, a plurality of threading holes are provided at the rear end of the tail rod, and the wires are passed through the threading holes.

[0013] Furthermore, the protection mechanism includes a sleeve and a bellows, the sleeve is sleeved on one end of the wire tube, and the bottom side wall of the bellows is fixedly connected to the inner wall of the sleeve.

[0014] Furthermore, the support platform is provided with telescopic legs and universal wheels, and the universal wheels are arranged at the bottom of the telescopic legs.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] ① The guide head is set at the head of the jacking pipe. There are multiple guide wheels in a circular array on the side wall of the guide head. The guide head first enters the wire tube, and moves forward with the upper and lower pressure rollers squeezing the jacking rod and the standard rod. The guide head penetrates into the wire tube and moves. The guide wheels help the guide head and the jacking rod to change direction.

[0017] ②The protective mechanism includes a pipe sleeve and a corrugated tube. The pipe sleeve is sleeved on one end of the wire pipe. The bottom side wall of the corrugated tube is fixedly connected to the inner wall of the pipe sleeve. The corrugated tube is easy to change direction. When the end of the wire pipe is located next to the wall and the top rod needs to be bent 90 degrees, the pipe sleeve and the corrugated tube can be installed on the end of the wire pipe. The corrugated tube is pulled to change the direction of the port to facilitate the entry of the guide head. At the same time, the corrugated tube is softer and not easy to scratch the wires. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 The utility model is a schematic diagram of the overall structure of a lead-in device for building electrical installation.

[0020] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0021] In the figure: 1. wire tube; 2. bracket; 21. sliding frame; 211. baffle; 212. slide rail; 213. slider; 214. spring; 3. support platform; 31. supporting column; 32. telescopic leg; 33. universal wheel; 4. lower pressure roller; 41. driving shaft; 411. rotating part; 5. upper pressure roller; 6. positioning sleeve; 7. lead rod assembly; 71. push rod; 72. standard rod; 73. tail rod; 731. threading hole; 732. wire; 74. bolt; 75. sleeve; 8. guide head; 81. magnet; 82. guide wheel; 9. protective mechanism; 91. pipe sleeve; 92. corrugated pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 As shown, a building electrical installation lead-in device includes: a wire tube 1, a bracket 2 and a support platform 3, the bracket 2 is mounted on the support platform 3, and also includes: a lower pressure roller 4 rotatably connected to the bracket 2, the side wall of the lower pressure roller 4 is provided with a driving shaft 41; an upper pressure roller 5 slidably connected to the bracket 2; a plurality of positioning sleeves 6 sleeved on the upper pressure roller 5 and the lower pressure roller 4; a lead rod assembly 7 clamped between the upper pressure roller 5 and the lower pressure roller 4, the lead rod assembly 7 includes a top rod 71, a standard rod 72 and a tail rod 73; a guide head 8 provided on the top of the top rod 71, the front end of the guide head 8 is provided with a magnet 81; and a protective mechanism 9 provided at the end of the wire tube 1.

[0024] like Figure 2 As shown, sliding frames 21 are provided on both sides of the front end of the bracket 2, the sliding frames 21 are placed vertically, a baffle 211 is provided in the middle of the sliding frame 21, both sides of the upper pressure roller 5 are provided on the upper part of the baffle 211, and both sides of the lower pressure roller 4 are provided on the lower part of the baffle 211. A base is provided in the sliding frame 21, and one end without a driving shaft 41 is rotatably connected to the base. When the driving shaft 41 rotates, the driving shaft 41 drives the lower pressure roller 4 to rotate together.

[0025] The driving shaft 41 is driven to rotate by a rotating member 411, and the rotating member 411 can be selected as a driving motor or a handle. When the lead-in construction is carried out, if it is convenient to connect with a temporary electrical box, the driving motor can be connected to the driving shaft 41, and the lower pressure roller 4 is driven to rotate by the driving motor. This is more labor-saving. A supporting column 31 is fixedly connected to the bracket 2. When the driving motor is used, the driving motor can be installed on the supporting column 31; if it is difficult to connect with the temporary electrical box at the lead-in construction site, a handle can be inserted into the driving shaft 41, and the lower pressure roller 4 can be manually driven to rotate by shaking the handle.

[0026] A slide rail 212 is provided on the inner wall of the sliding frame 21. The slide rail 212 is provided above the baffle 211. The slide rail 212 protrudes from the inner wall of the sliding frame 21. A slider 213 is slidably connected to the slide rail 212. The slide rail 212 limits the slider 213 to only move up and down. Both sides of the upper pressure roller 5 pass through the middle of the slider 213. The upper pressure roller 5 can rotate relative to the slider 213. A spring 214 is fixed to the bottom of the slider 213. The other end of the spring 214 is fixed to the top of the baffle 211. The spring 214 is always in a stretched state, providing a downward pulling force to the slider 213. When the lead rod assembly 7 passes between the upper pressure roller 5 and the lower pressure roller 4, the upper pressure roller 5 presses the lead rod assembly 7 downward. When the lower pressure roller 4 rotates, the lead rod assembly 7 is driven forward by friction.

[0027] The positioning sleeve 6 is an elastic leather sleeve, and the positioning sleeve 6 is annular. When the positioning sleeve 6 is sleeved on the upper pressure roller 5 and the lower pressure roller 4, the positioning sleeve 6 is in an inwardly contracted state, and the positioning sleeve 6 presses the side walls of the upper pressure roller 5 and the lower pressure roller 4. When the positioning sleeve 6 needs to be moved, the positioning sleeve 6 is pushed to roll on the upper pressure roller 5 or the lower pressure roller 4. The outer wall of the positioning sleeve 6 protrudes from the side walls of the upper pressure roller 5 and the lower pressure roller 4, and a channel is formed between the two positioning sleeves 6. The distance between the two positioning sleeves 6 is the same as the diameter of the lead rod assembly 7. The positioning sleeve 6 prevents the lead rod assembly 7 from being offset when it moves, so that the moving position of the lead rod assembly 7 is fixed. When it is necessary to synchronously lead multiple lines of the same diameter, different lines are clamped between different positioning sleeves 6 to prevent multiple lines from crossing and knotting when leading.

[0028] Bolts 74 are provided at the rear end of the mandrel 71, bolts 74 are provided at both ends of the standard rod 72, and bolts 74 are provided at the front end of the tail rod 73. Bolts 74 can be screwed with sleeves 75. The outer diameter of the sleeve 75 is the same as the outer diameters of the mandrel 71, the standard rod 72 and the tail rod 73. The standard rod 72 is provided at the rear end of the mandrel 71. The number of standard rods 72 selected corresponds to the length of the wire tube 1. After the mandrel 71 is inserted into the wire tube 1, the standard rods 72 are screwed in sequence. When the mandrel 71 passes through the other end of the wire tube 1, the tail rod 73 is screwed with the last section of the standard rod 72. The mandrel 71, the standard rod 72 and the tail rod 73 are all made of a tough material, which can be selected as rubber or silicone. The tough material can make the mandrel 71, the standard rod 72 and the tail rod 73 bend along the direction of the pipeline, so as to facilitate walking in the wire tube 1.

[0029] The guide head 8 is arranged at the head of the jacking pipe, and a plurality of guide wheels 82 are arranged in a circular array on the side wall of the guide head 8. The guide head 8 first enters into the wire tube 1, and moves forward with the upper pressure roller 5 and the lower pressure roller 4 squeezing the jacking rod 71 and the standard rod 72. The guide head 8 penetrates into the wire tube 1 and moves, and the guide wheels 82 help the guide head 8 and the jacking rod 71 to change direction.

[0030] The magnet 81 is arranged at the front end of the guide head 8. If there are two devices, both ends of the wire tube 1 can be inserted into the push rod 71 and the standard rod 72 at the same time. The two guide heads 8 meet in the pipeline, and the two magnets 81 are magnetically attracted together. At this time, pulling back one standard rod 72 can accelerate the other push rod 71 to be led out of the wire tube 1, thereby increasing the speed of the lead-in.

[0031] A plurality of threading holes 731 are provided at the rear end of the tail rod 73, and the wires 732 pass through the threading holes 731. The tail rod 73 is screwed to the rear end of the standard rod 72, and the tail rod 73 drives the wires 732 to pass through the wire tube 1 to complete the lead-in operation.

[0032] The protective mechanism 9 includes a sleeve 91 and a bellows 92. The sleeve 91 is sleeved on one end of the wire tube 1. The bottom side wall of the bellows 92 is fixedly connected to the inner wall of the sleeve 91. The bellows 92 is easy to change direction. When the end of the wire tube 1 is located near the wall and the top rod 71 needs to be bent ninety degrees, the sleeve 91 and the bellows 92 can be installed on the end of the wire tube 1. The bellows 92 is pulled to change the direction of the port to facilitate the entry of the guide head 8. At the same time, the bellows 92 is relatively soft and not easy to scratch the wire 732.

[0033] The support platform 3 is provided with telescopic legs 32 and universal wheels 33, and the universal wheels 33 are provided at the bottom of the telescopic legs 32, and the universal wheels 33 facilitate pushing the support platform 3 and the device. When the opening of the wire tube 1 is higher, the height of the telescopic legs 32 can be adjusted to facilitate the threading operation.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A lead-in device for building electrical installation, comprising: A wire tube (1), a bracket (2) and a support platform (3), wherein the bracket (2) is mounted on the support platform (3), and is characterized in that it also includes: A lower pressing roller (4) is rotatably connected to the bracket (2), wherein a driving shaft (41) is provided on a side wall of the lower pressing roller (4); An upper pressing roller (5) slidably connected to the bracket (2); A plurality of positioning sleeves (6) sleeved on the upper pressing roller (5) and the lower pressing roller (4); A lead rod assembly (7) clamped between the upper pressure roller (5) and the lower pressure roller (4), wherein the lead rod assembly (7) comprises a top rod (71), a standard rod (72) and a tail rod (73); A guide head (8) is arranged on the top of the push rod (71), and a magnet (81) is arranged at the front end of the guide head (8); and A protection mechanism (9) is provided at the end of the wire tube (1).

2. A building electrical installation lead device according to claim 1, characterized in that: Sliding frames (21) are provided on both sides of the front end of the bracket (2), a baffle (211) is provided in the middle of the sliding frame (21), both sides of the upper pressure roller (5) are provided on the upper part of the baffle (211), and both sides of the lower pressure roller (4) are provided below the baffle (211).

3. A building electrical installation lead-in device according to claim 2, characterized in that: The inner wall of the sliding frame (21) is provided with a sliding rail (212), the sliding rail (212) is arranged above the baffle (211), a sliding block (213) is slidably connected to the sliding rail (212), a spring (214) is fixed to the bottom of the sliding block (213), the other end of the spring (214) is fixed to the top of the baffle (211), and the upper pressure roller (5) is rotatably connected to the sliding block (213).

4. A building electrical installation lead-in device according to claim 3, characterized in that: The positioning sleeve (6) is an elastic leather sleeve, and the positioning sleeve (6) can slide on the side walls of the upper pressing roller (5) and the lower pressing roller (4).

5. A building electrical installation lead-in device according to claim 4, characterized in that: The rear end of the top rod (71) is provided with a bolt (74), both ends of the standard rod (72) are provided with the bolt (74), and the front end of the tail rod (73) is provided with the bolt (74), and the bolt (74) can be threadedly connected with the sleeve (75).

6. A building electrical installation lead-in device according to claim 5, characterized in that: The side wall of the driving shaft (41) is detachably connected with a rotating member (411).

7. A building electrical installation lead-in device according to claim 6, characterized in that: The guide head (8) has a plurality of guide wheels (82) in an annular array on the side wall.

8. A building electrical installation lead-in device according to claim 7, characterized in that: The rear end of the tail rod (73) is provided with a plurality of wire threading holes (731), and the wires (732) are passed through the wire threading holes (731).

9. A building electrical installation lead-in device according to claim 8, characterized in that: The protection mechanism (9) comprises a pipe sleeve (91) and a corrugated tube (92); the pipe sleeve (91) is sleeved on one end of the wire tube (1); and the bottom side wall of the corrugated tube (92) is fixedly connected to the inner wall of the pipe sleeve (91).

10. A building electrical installation lead-in device according to claim 9, characterized in that: The support platform (3) is provided with telescopic legs (32) and universal wheels (33), and the universal wheels (33) are arranged at the bottom of the telescopic legs (32).

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