CN109768504B - Electric pre-buried spool mediation threading device - Google Patents
Electric pre-buried spool mediation threading device Download PDFInfo
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- CN109768504B CN109768504B CN201910199251.XA CN201910199251A CN109768504B CN 109768504 B CN109768504 B CN 109768504B CN 201910199251 A CN201910199251 A CN 201910199251A CN 109768504 B CN109768504 B CN 109768504B
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- 238000000034 method Methods 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 6
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- 230000008569 process Effects 0.000 description 5
- 239000006260 foam Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
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- 238000004891 communication Methods 0.000 description 2
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- 239000004677 Nylon Substances 0.000 description 1
- 235000004443 Ricinus communis Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
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Abstract
The invention provides an electric pre-buried spool dredging threading device which comprises a base, wherein the bottom of the base is provided with supporting legs, the bottoms of the supporting legs are provided with casters, the top of the base is fixedly provided with an air compressor, the air compressor is connected with a high-pressure container through an air inlet pipe, a first cavity and a second cavity are arranged in the high-pressure container, a first limiting pipe and a second limiting pipe which are communicated with the air inlet pipe are arranged in the first cavity, a valve is arranged on the first limiting pipe, a point control switch is arranged on the second limiting pipe, the two limiting pipes are communicated with the second cavity, the second cavity is connected with an air outlet pipe, and the end part of the air outlet pipe is connected with a dredging head. The beneficial effects of the invention are as follows: reasonable in design, simple structure, safe and reliable, labour saving and time saving can shorten electric spool mediation threading construction cycle greatly.
Description
Technical Field
The invention relates to the field of threading equipment for a wire pipe in a building construction wall, in particular to an electric pre-buried wire pipe dredging and threading device.
Background
In the construction electric construction operation, the immediately subsequent working procedure of the line pipe laying is the line pipe dredging threading line, the working procedure is a key quality working procedure, and if the construction progress is slow, the construction progress of the subsequent working procedures of civil engineering plastering and whitewashing and brushing is directly affected.
The traditional line pipe dredging device is a 14# steel wire, the construction method is that the head end and the tail end of the 14# steel wire are bent into a round shape, nylon ropes are tied at the tail ends, the head end of the steel wire is put into the line pipe from the pipe end of the line pipe along the pipe orifice, manpower is used for tamping forward, the tail end of the line pipe is reached, the steel wire is clamped by a vice, the steel wire is pulled by manpower, and accordingly garbage and rope wires in the line pipe are taken through, and the line pipe threading procedure is formed through bending. The whole construction process is time-consuming and labor-consuming, the construction operation is complex and troublesome, and the construction period is long; in addition, the potential safety hazard often causes construction operators to be pricked by steel wires.
At present, in part of operation sites, operators can put plastic or foam blocks in a line pipe to be fastened by ropes, and directly put air flow in the line pipe to enable the foam blocks to pass through the line pipe to reach the tail of the line pipe, but the method is often blocked when encountering obstacles or turning positions of the line pipe, so that the foam blocks are difficult to pass, and if the line pipe is broken in the building process, the air flow flows out from the broken positions of the line pipe to break the air pressure in the line pipe, so that the foam head cannot advance.
How to solve the technical problems is the subject of the present invention.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides the electric pre-buried wire pipe dredging and threading device which is reasonable in design, simple in structure, safe, reliable, time-saving and labor-saving, and capable of greatly shortening the construction period of the electric wire pipe dredging and threading.
The technical scheme adopted for solving the technical problems is as follows: the invention provides an electric pre-buried line pipe dredging threading device, which comprises a base, wherein an air compressor is arranged on the base, the air outlet end of the air compressor is connected with the air inlet end of a high-pressure container through an air inlet pipe, the air outlet end of the high-pressure container is connected with a dredging head through an air outlet pipe, and the air outlet end of the air outlet pipe extends to the inside of the dredging head; the dredging head is of a hollow structure, and a plurality of air holes are formed in the side wall, close to the air outlet pipe, of the dredging head;
the dredging head is a frustum body and is made of airtight elastic materials; the one end that the outlet duct was kept away from to the mediation head is the less one end of diameter, and this terminal surface is inside to be towards the sunken arc concave surface of cone top, the great one end of mediation head diameter corresponds with pre-buried spool internal diameter, the great end external diameter of mediation head slightly is less than pre-buried spool internal diameter.
The inside cavity that is of mediation head, the gas pocket with cavity intercommunication in the mediation head.
A first chamber and a second chamber are arranged in the high-pressure container;
a first flow limiting pipe and a second flow limiting pipe are arranged in the first chamber, the air inlet pipe extends into the first chamber, the air inlet pipe is communicated with one ends of the first flow limiting pipe and the second flow limiting pipe, and the other ends of the first flow limiting pipe and the second flow limiting pipe are communicated with the second chamber;
the first limiting pipe is provided with a valve, and the second limiting pipe is provided with a point control switch;
the second chamber is communicated with the air outlet pipe;
the point control switch comprises a shell arranged on a second current limiting pipe, the middle part of the shell is slidably connected with a movable plate, one end of the movable plate is provided with a connecting button, the button extends to the outside of the high-pressure container, a through hole is formed in the plate surface of the movable plate, which is close to the button, the diameter of the through hole is matched with the inner diameter of the second current limiting pipe, and a spring for resetting the movable plate is arranged between the lower side part of the button and the outer wall of the shell.
The base is a rectangular plate which is horizontally arranged, and the air compressor, the high-pressure container and the coil box are fixedly arranged on the top surface of the base.
The high-pressure container is of a cylinder structure which is transversely arranged, one end of the first flow limiting pipe is communicated with one end of the second flow limiting pipe and is communicated with the air inlet pipe, and the joint of the first flow limiting pipe and the second flow limiting pipe is of a Y-shaped structure. The Y-shaped communication structure is beneficial to gas diversion and reduces the obstruction to gas diversion.
The first limiting pipe and the second limiting pipe are both close to the inner wall of the high-pressure container, and the control ends of the valve and the point control switch penetrate through the outer wall of the high-pressure container and are located outside.
A coil box is arranged on the base, the air outlet pipe is arranged in the coil box, a through groove is formed in one side, far away from the high-pressure container, of the coil box, a pipe moving mechanism is arranged in the through groove, the pipe moving mechanism comprises two rotating columns, and a gap for the air outlet pipe to pass through is reserved between the two rotating columns;
the air outlet pipe is a hose, the length of the air outlet pipe is not smaller than that of the embedded wire pipe, and the outer diameter of the air outlet pipe is smaller than the inner diameter of the embedded wire pipe;
one end of the air outlet pipe is fixed inside the second cavity and communicated with the second cavity, the pipe body of the air outlet pipe is positioned in the coil box, and the dredging head is positioned outside the coil box.
The bottom of base is provided with a plurality of landing legs, every landing leg bottom all is provided with the truckle.
The coil box is a rectangular box with an open top, the through groove is positioned on one side, far away from the high-pressure container, of the coil box, the two rotating columns are vertically arranged, the axes of the two rotating columns are parallel, the end parts of the two rotating columns are coaxially and fixedly connected with a gear, the gears of the two rotating columns are meshed with each other, the central rotating shaft of one gear is coaxial with a motor shaft of the motor, the driving end of the motor is controlled by a switch, and the distance between the two rotating columns is slightly smaller than the outer diameter of the air outlet pipe.
The landing leg vertically set up in the bottom of base, the truckle is the universal wheel, and is provided with the auto-lock structure.
A hand pushing frame is arranged on one side of the top of the base.
The invention is practically used: the device is moved to a line pipe position needing threading through a trundle, a dredging head is placed into an embedded line pipe needing threading, a switch of a line-moving mechanism is turned on, two gears drive rotary columns to start to rotate in opposite directions, the dredging head moves into the line pipe, then an air compressor is electrified, the air compressor starts to work, an initial state of a valve and a point control switch is in a closing state, air flow is sent into a first limiting pipe and a second limiting pipe through an air inlet pipe, the valve is gradually opened, at the moment, the air flow enters a second cavity through the first limiting pipe and enters the inside of the dredging head along an air outlet pipe, finally the air flow is sprayed out from an air hole, the dredging head is pushed to drag the air outlet pipe to move to the depth of the line pipe, the pipe end of the line pipe reaches the tail of the line pipe, the dredging of the embedded electric line pipe is completed, and when the dredging head encounters a barrier or a turning position in the sliding process, when the button is pressed, the through hole of the movable plate enters the shell, at the moment, the air flow of the second flow limiting pipe passes through the through hole, the point control switch is in an air flow passing state, the air flow passes through the second flow limiting pipe, the air flow passes through the two flow limiting pipes simultaneously, and the point control switch is opened to be equal to the state of completely communicating the air compressor and the air outlet pipe, so the air pressure is increased, the dredging head can push the obstacle to a certain extent or pass through the obstacle and the turning part through the deformation of the dredging head, because the excessive air flow is continuously conveyed into the air outlet pipe, the part of the air outlet pipe positioned in the coil pipe box is easy to be straightened, the point control switch can be controlled by people to intermittently send out large air flow when the air outlet pipe is required, the point control switch can be loosened under the condition that the air outlet pipe is not blocked, and when the button is loosened, the movable plate resets under the effect of the spring, and the movable plate is far away from the plate body closed shell inner space of the button, and the second current limiting pipe is in a blocking state of the point control switch, so that the dredging head continuously and stably slides, and the opening of the valve can be increased along with the increase of the part of the air outlet pipe entering the wire pipe.
The beneficial effects of the invention are as follows: the device has the advantages that the device is simple in structure, reasonable in design, time-saving and labor-saving, and can greatly shorten the construction period of dredging the threading wire of the electric wire tube, replaces the traditional wire threading device for dredging the threading wire by dredging the wire, utilizes pneumatic power to complete the dredging of the pre-buried electric wire tube, is simple and easy to operate, organically combines the functions of the valve threshold flow tube, the point control switch flow limiting tube and the air compressor, and utilizes the pneumatic power to drive the dredging head wire to lead wires so as to complete the dredging work of the pre-buried electric wire tube. In addition, dust, cement blocks and the like in the spool can be pushed out together by dredging the head under the power of air pressure. The device is time-saving, labor-saving and efficient, can dredge a line pipe for only a few seconds, and can be popularized and used in a large area.
The device is characterized in that air flow is flushed into the air outlet pipe and the dredging head is reversely pushed into the deep part of the air inlet pipe through the air hole, instead of directly introducing air into the air pipe, so that the damage of the air pipe in the house construction process is avoided, the air flow flows out of the damage to destroy air pressure, so that the dredging head cannot advance, and the device can keep stable air pressure and push the inside of the dredging head to the air pipe under the condition that the air outlet pipe is not damaged; the device is provided with the base, the bottom of the base is provided with the supporting legs and the casters, and one side of the top of the base is provided with the hand pushing frame, so that the device can be easily moved to a position where a threading pipe is needed; the air compressor is arranged on the base, the line lead can be driven to be dredged by utilizing pneumatic power, the dredging work of the embedded electric line pipe is completed, and the air pressure of the air compressor of 8MPa is safe and reliable and harmless to human bodies; the air compressor is connected with a high-pressure container through an air inlet pipe, and as the air pressure of the air compressor is large, when the air flow just enters the air outlet pipe, if the air pressure is too large, a hose structure of the air outlet pipe can be possibly damaged or the air outlet pipe becomes too hard to influence the dredging head to slide in the online pipe, so the high-pressure container is divided into a first cavity and a second cavity, two flow limiting pipes are arranged in the first cavity and are used for limiting the air flow through a valve and a point control switch respectively, so the air pressure in the pipe is effectively controlled, the point control switch is pressed under the condition that the valve is not moved, the air flow at the moment can pass through the second flow limiting pipe, the air flow is enabled to be the largest at once, and the dredging head can push an obstacle or complete turning due to impact force; the coil box is arranged to conveniently store the air outlet pipe, so that the air outlet pipe is prevented from knotting or twisting to influence the air flow, one side of the coil box is provided with a pipe travelling mechanism, the air outlet pipe is conveyed out of the coil box through two rotating columns which rotate relatively, the mechanism can be opened when the air outlet pipe just enters the pipe, the air outlet pipe is pushed into the pipe, and meanwhile, the mechanism also prevents the air outlet pipe from being blocked in a through groove of the coil box to influence the use of the device; the dredging head is designed to be bullet-shaped, the area of the head end is small, the air resistance is reduced, the dredging head is convenient to advance in the spool, the outer diameter of the rear end of the dredging head is matched with the inner diameter of the spool, and in order to clean dust and sand in the spool, the spool is free of barriers so that a belt wire can be conveniently threaded in the later stage.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a schematic diagram of the overall structure of the present invention.
Fig. 3 is an internal cross-sectional view of the high pressure vessel of the present invention.
Fig. 4 is a schematic structural view of the pipe running mechanism of the present invention.
Fig. 5 is a schematic structural view of the dredging head of the invention.
Fig. 6 is a schematic structural diagram of the closed state of the point control switch of the present invention.
Fig. 7 is a schematic structural diagram of an on state of the point control switch according to the present invention.
Wherein, the reference numerals are as follows: 1. a base; 2. an air compressor; 3. a high pressure vessel; 4. a first chamber; 5. a second chamber; 6. an air inlet pipe; 7. a first flow restriction tube; 8. a second flow restrictor; 9. an air outlet pipe; 10. dredging the head; 11. air holes; 12. a support leg; 13. casters; 14. a coil box; 15. a through groove; 16. a spin column; 17. a valve; 18. a point control switch; 19. a hand pushing frame; 20. a through hole; 21. and (3) a spring.
Detailed Description
Technical characteristics of the present solution can be clearly illustrated, and the present solution is illustrated below by means of specific embodiments.
Referring to fig. 1 to 7, the embodiment is an electrical pre-buried line pipe dredging threading device, which comprises a base 1, wherein the base 1 is a rectangular plate horizontally arranged, an air compressor 2 is fixedly arranged on the upper top surface of the base 1, an air outlet end of the air compressor 2 is connected with an air inlet end of a high-pressure container 3 through an air inlet pipe 6, an air outlet end of the high-pressure container 3 is connected with a dredging head 10 through an air outlet pipe 9, the air outlet pipe 9 is a hose, the length is not less than the length of the pre-buried line pipe, the outer diameter of the air outlet pipe 9 is smaller than the inner diameter of the pre-buried line pipe, and the air outlet end of the air outlet pipe 9 extends to the inside of the dredging head 10; the dredging head 10 is of a hollow structure, and a plurality of air holes 11 are formed in the side wall close to the air outlet pipe 9;
the dredging head 10 is a frustum body and is made of airtight elastic materials; the end of dredging head 10 that is far away from outlet duct 9 is the less one end of diameter, and this terminal surface is inside to towards the sunken arc concave surface of cone top, and the great one end of dredging head 10 diameter corresponds with pre-buried spool internal diameter, and the great end external diameter of dredging head 10 is slightly less than pre-buried spool internal diameter.
The inside of the dredging head 10 is a cavity, and the air hole 11 is communicated with the cavity in the dredging head 10.
The high-pressure container 3 is internally provided with a first chamber 4 and a second chamber 5, the first chamber 4 is internally provided with a first flow limiting pipe 7 and a second flow limiting pipe 8, the air inlet pipe 6 extends into the first chamber 4, the air inlet pipe 6 is communicated with one ends of the first flow limiting pipe 7 and the second flow limiting pipe 8, and the other ends of the first flow limiting pipe 7 and the second flow limiting pipe 8 are communicated with the second chamber 5;
the high-pressure container 3 is a cylinder structure which is transversely arranged, one end of the first flow limiting pipe 7 is communicated with one end of the second flow limiting pipe 8 and is communicated with the air inlet pipe 6, and the joint of the first flow limiting pipe and the second flow limiting pipe is in a Y-shaped structure. The Y-shaped communication structure is beneficial to gas diversion and reduces the obstruction to gas diversion.
The first flow limiting pipe 7 is provided with a valve 17, the second flow limiting pipe 8 is provided with a point control switch 18, and the second chamber 5 is communicated with the air outlet pipe 9.
The first flow limiting pipe 7 and the second flow limiting pipe 8 are both arranged close to the inner wall of the high-pressure container 3, and the control ends of the valve 17 and the point control switch 18 penetrate through the outer wall of the high-pressure container 3 and are positioned outside.
The point control switch 18 comprises a shell arranged on the pipeline of the second flow limiting pipe 8, the middle part of the shell is connected with a moving plate in a sliding manner, one end of the moving plate is provided with a connecting button, the button extends to the outside of the high-pressure container 3, a through hole 20 is formed in the plate surface of the moving plate, which is close to the button, the diameter of the through hole is matched with the inner diameter of the second flow limiting pipe 8, and a spring 21 for resetting the moving plate is arranged between the lower side part of the button and the outer wall of the shell.
Be provided with coil pipe box 14 on the base 1, coil pipe box 14 is open-top's rectangle box, place outlet duct 9 in the coil pipe box 14, logical groove 15 is seted up to one side that coil pipe box 14 kept away from high pressure vessel 3, logical groove 15 is located one side that coil pipe box 14 kept away from high pressure vessel 3, be provided with the walk pipe mechanism in logical groove 15, walk pipe mechanism includes two column 16, leave the clearance that supplies outlet duct 9 to pass between two column 16, two column 16 vertical setting, and the two axis is parallel, the equal coaxial fixedly connected with of tip of two column 16 has a gear, the gear intermesh of two column 16, the central pivot of one of them gear is coaxial with the motor shaft of motor, the motor drive end is controlled by the switch, the interval of two column 16 is slightly less than the external diameter of outlet duct 9, outlet duct 9 body is located coil pipe box 14, the mediation head 10 is located outside the coil pipe box 14.
The bottom of base 1 is provided with a plurality of landing legs 12, and landing leg 12 is vertical to be set up in the bottom of base 1, and every landing leg 12 bottom all is provided with truckle 13, and truckle 13 is the universal wheel, and is provided with the auto-lock structure.
A hand pushing frame 19 is arranged on one side of the top of the base 1.
The invention is practically used: the device is moved to a line pipe position needing threading through a castor 13, a dredging head 10 is placed into an embedded line pipe needing threading, a switch of a line-moving mechanism is turned on, two gears drive a rotary column 16 to start to rotate in opposite directions, the dredging head 10 moves into the line pipe, then an air compressor 2 is electrified, at the moment, the air compressor 2 starts to work, a valve 17 and a point control switch 18 are in initial states which are closed, air flow is sent into a first limiting pipe 7 and a second limiting pipe 8 through an air inlet pipe 6, the valve 17 is gradually opened, at the moment, the air flow enters a second chamber 5 through the first limiting pipe 7 and enters the inside of the dredging head 10 along an air outlet pipe, finally the air flow is sprayed out from an air hole 11, the dredging head 10 is pushed to drag the air outlet pipe 9 to move to the deep part of the line pipe, the tail of the line pipe is reached from the pipe end, and the dredging of the embedded electric line pipe is completed, when the dredging head 10 encounters an obstacle or a turning place in the sliding process, the air pressure is smaller and is difficult to pass, the point control switch 18 can be pressed, when the button is pressed, the through hole 20 of the movable plate enters the inside of the shell, at the moment, the air flow of the second flow limiting pipe 8 passes through the through hole 20, the point control switch 18 is in an air flow passing state, the air flow passes through the second flow limiting pipe 8, and the air flow passes through the two flow limiting pipes simultaneously, and the point control switch 18 is opened and is equal to the air compressor 2 and the air outlet pipe which are completely communicated, so that the air pressure is increased, the dredging head 10 can push the obstacle to a certain extent or pass through the obstacle and the turning place through the deformation of the dredging head 10, because the air flow is continuously conveyed into the air outlet pipe 9 directly, the part of the air outlet pipe 9 positioned in the coil pipe box 14 is easy to have the possibility of being straightened, so that the air flow can be intermittently sent out by the point control switch 18 by people when the need, under the condition that the air outlet pipe 9 is unobstructed, the point control switch 18 can be loosened, when the button is loosened, the movable plate is reset under the action of the spring 21, the movable plate is far away from the plate body closed shell inner space of the button, the second flow limiting pipe 8 is in a blocking state of the point control switch 18, the dredging head 10 continues to slide stably, and the opening of the valve 17 can be increased along with the increase of the part of the air outlet pipe 9 entering the pipe.
The technical features of the present invention that are not described in the present invention may be implemented by or using the prior art, and are not described in detail herein, but the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, but is also intended to be within the scope of the present invention by those skilled in the art.
Claims (5)
1. An electric pre-buried line pipe dredging and threading device is characterized in that,
the high-pressure dredging device comprises a base (1), wherein an air compressor (2) is arranged on the base (1), the air outlet end of the air compressor (2) is connected with the air inlet end of a high-pressure container (3) through an air inlet pipe (6), the air outlet end of the high-pressure container (3) is connected with a dredging head (10) through an air outlet pipe (9), and the air outlet end of the air outlet pipe (9) extends to the inside of the dredging head (10); the dredging head (10) is of a hollow structure, and a plurality of air holes (11) are formed in the side wall, close to the air outlet pipe (9), of the dredging head (10);
the dredging head (10) is a frustum body and is made of airtight elastic materials; one end of the dredging head (10) far away from the air outlet pipe (9) is a smaller-diameter end, the inside of the smaller-diameter end of the dredging head (10) is an arc concave surface which is sunken towards the conical top of the frustum body, and the larger-diameter end of the dredging head (10) corresponds to the inner diameter of the embedded wire pipe;
the inside of the dredging head (10) is a cavity, and the air hole (11) is communicated with the cavity in the dredging head (10);
a first chamber (4) and a second chamber (5) are arranged in the high-pressure container (3);
a first flow limiting pipe (7) and a second flow limiting pipe (8) are arranged in the first chamber (4), the air inlet pipe (6) extends to the inside of the first chamber (4), the air inlet pipe (6) is communicated with one ends of the first flow limiting pipe (7) and the second flow limiting pipe (8), and the other ends of the first flow limiting pipe (7) and the second flow limiting pipe (8) are both communicated with the second chamber (5);
a valve (17) is arranged on the first flow limiting pipe (7), and a point control switch (18) is arranged on the second flow limiting pipe (8);
the second chamber (5) is communicated with the air outlet pipe (9);
the high-pressure container (3) is of a cylinder structure which is transversely arranged, one end of the first flow limiting pipe (7) is communicated with one end of the second flow limiting pipe (8) and is communicated with the air inlet pipe (6), and the joint of the first flow limiting pipe (7), the second flow limiting pipe (8) and the air inlet pipe (6) is of a Y-shaped structure;
a coil box (14) is arranged on the base (1), and the air outlet pipe (9) is arranged in the coil box (14);
the bottom of base (1) is provided with a plurality of landing legs (12), and every landing leg (12) bottom all is provided with truckle (13).
2. The electrical pre-buried spool dredging threading device according to claim 1, characterized in that a through groove (15) is formed in one side of the coil pipe box (14) far away from the high-pressure container (3), a pipe running mechanism is arranged in the through groove (15), the pipe running mechanism comprises two rotating columns (16), and a gap for the air outlet pipe (9) to pass through is reserved between the two rotating columns (16).
3. The electrical pre-buried spool dredging threading device according to claim 2, wherein the coil pipe box (14) is a rectangular box with an opening at the top, the through groove (15) is positioned at one side of the coil pipe box (14) far away from the high-pressure container (3), the two rotating columns (16) are vertically arranged, the axes of the two rotating columns are parallel, the end parts of the two rotating columns (16) are coaxially and fixedly connected with a gear, the gears of the two rotating columns (16) are meshed with each other, the central rotating shaft of one gear is coaxial with a motor shaft of the motor, the driving end of the motor is controlled by a switch, and the distance between the two rotating columns (16) is slightly smaller than the outer diameter of the air outlet pipe (9).
4. The electrical pre-buried spool dredging threading device according to claim 3, characterized in that the supporting leg (12) is vertically arranged at the bottom of the base (1), the caster wheel (13) is a universal wheel and is provided with a self-locking structure.
5. The electrical pre-buried spool dredging threading device according to claim 1, characterized in that a hand pushing frame (19) is arranged on one side of the top of the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910199251.XA CN109768504B (en) | 2019-03-15 | 2019-03-15 | Electric pre-buried spool mediation threading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910199251.XA CN109768504B (en) | 2019-03-15 | 2019-03-15 | Electric pre-buried spool mediation threading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109768504A CN109768504A (en) | 2019-05-17 |
| CN109768504B true CN109768504B (en) | 2024-04-12 |
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| CN201910199251.XA Active CN109768504B (en) | 2019-03-15 | 2019-03-15 | Electric pre-buried spool mediation threading device |
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| CN112415699B (en) * | 2020-11-25 | 2023-04-07 | 浙江大丰管网有限公司 | Pipeline pipe penetrating system and optical cable pipe penetrating method using pipeline pipe penetrating system |
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