CN211980921U

CN211980921U - Temporary grounding device for subway line maintenance

Info

Publication number: CN211980921U
Application number: CN202021117682.1U
Authority: CN
Inventors: 唐国强
Original assignee: Shenzhen Jianqiao Rail Transit Co ltd
Current assignee: Shenzhen Jianqiao Rail Transit Co ltd
Priority date: 2020-06-16
Filing date: 2020-06-16
Publication date: 2020-11-20
Anticipated expiration: 2030-06-16

Abstract

The utility model discloses a subway circuit maintenance is with interim earthing device, including support, footboard, earthing pin, jack, pivot, earth connection, magnetism piece and stand pipe of inhaling. This temporary earthing device is used in subway line maintenance, during the use, at first the user stands on trampling the footboard on the frame, make the total weight of support increase, then the user holds the depression bar of hydraulic pump and begins to exert pressure to the jack, the vaulting pole of jack begins to extend and extrudees the earthing rod, make the earthing rod prolong stand pipe rebound, final earthing rod inserts ground, then the user takes the magnetism of the tip of earth connection and inhales the piece, the handle pulling, pull out the earth connection from the pivot in the fixing base, then inhale the piece with magnetism and adsorb the construction position, the cushion touches with the railway line track of construction position this moment, the tip of earth connection touches on the railway line track outer wall simultaneously, railway line track this moment, the earth connection, the apparatus further comprises a rotating shaft, connecting wire and earthing rod form the ground connection.

Description

Temporary grounding device for subway line maintenance

Technical Field

The utility model relates to a grounding device field specifically is a subway circuit maintenance is with interim grounding device.

Background

Grounding (earth) means that the neutral point of the power system and the electrical apparatus, the exposed conductive portion of the electrical equipment and the external conductive portion of the apparatus are connected to the earth via conductors. Can be divided into working ground, lightning protection ground and protection ground. The working ground is set by the operation requirements of the power system (such as neutral point grounding), so that under normal conditions, current flows through the ground electrode for a long time, but the current is unbalanced by a few amperes to a few tens of amperes. When a system has a ground fault, thousands of amperes of working current flows through the grounding electrode, but the current is cut off within 0.05-0.1 s by the relay protection device, and even if the system is backup protection, the action is generally within 1 s. The protective grounding is grounding which is arranged for preventing equipment from being endangered to personal safety due to insulation damage and electrification, such as a metal shell of power equipment, a reinforced concrete pole and a metal tower. The protective earth only allows the flow of current in the event of a breakdown of the insulation of the installation, the value of which can vary within wide limits.

The temporary grounding device for subway line maintenance is a grounding device used in subway line maintenance, but the conventional grounding device cannot be well fixed on the ground, so that the grounding is possible to be loosened, and danger is generated.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a subway circuit maintenance is with interim earthing device to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a temporary grounding device for maintaining a subway line comprises a support, wherein one side of the lower part of the support is fixedly connected with a stepping frame, the top surface of the stepping frame is fixedly connected with a pedal, the inner side of the top part of the support is fixedly provided with a jack, the top surface of the support is fixedly provided with a hydraulic pump, the hydraulic pump is connected with a jack pipeline, a grounding needle is arranged below the jack, a guide pipe is sleeved outside the grounding needle, the outer wall of the guide pipe is uniformly and equidistantly fixedly connected with connecting rods, one end of each connecting rod is fixedly connected to the inner side of the support, one side of the upper part of the support is fixedly provided with a fixed seat, the inner side of the fixed seat is rotatably connected with a rotating shaft, one end of the rotating shaft penetrates through the fixed seat and is fixedly connected with a rotating wheel, the other end of the rotating shaft penetrates, the piece is inhaled to one end outer wall fixedly connected with magnetism of earth connection, and the middle part outer wall symmetry fixed mounting of earthing needle has the extension rod, the one end of the equal fixedly connected with spring of tip outer wall of extension rod, and the other end fixedly connected with of spring is inboard at the top of support.

As a further aspect of the present invention: the pedal is a checkered plate, the jack is a hydraulic jack, and the hydraulic pump is a portable manual hydraulic pump.

As a further aspect of the present invention: the grounding pin is made of a conductive material, the top end of the grounding pin corresponds to the supporting rod of the jack, and the bottom end of the grounding pin is conical.

As a further aspect of the present invention: the pivot is electrically conductive material, the connecting wire is the conductor wire, the earth connection is electrically conductive material, magnetism piece is the magnetism material.

As a further aspect of the present invention: one side fixedly connected with cushion of piece is inhaled to magnetism, and the cushion flushes with the tip of earth connection, and the cushion is the annular, and the cushion is the rubber material.

As a further aspect of the present invention: the upper part and the lower part of the guide pipe are provided with two guide pipes, and the grounding wires are wound outside the rotating shaft layer by layer.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses, a support, trample the cooperation of frame and footboard and use, make the dead weight of user's station increase and decrease device on the footboard during operation, the decorative pattern has increased the frictional force of footboard and user's foot on the footboard simultaneously, avoid the user to slip, through the jack, the hydraulic pump, the cooperation of earthing pin stand pipe and connecting rod is used, make the earthing pin can convenient and fast insert ground, and male more stable, through the earthing pin, the cooperation of extension rod and spring is used, make and pull out the earthing pin from ground through the spring when not using, thereby make local railway circuit maintenance with interim earthing device can insert the earthing pin ground and take out the earthing pin voluntarily, and the earthing pin inserts ground and deepens more steadily.

2. The utility model discloses, through the fixing base, the cooperation of pivot and runner is used, make the earth connection accomodate outside the pivot, make earth connection length longer simultaneously, can be at the orbital ground point of removal railway circuit under the condition of unmovable earthing position, cooperation through magnetism suction block and cushion is used, make the tip of earth connection can be convenient adsorb the position that needs the maintenance, through the grounding needle, the pivot, the cooperation of connecting wire and earth connection is used, make earth connection and grounding needle interconnect form the ground connection, thereby make the interim earthing device for local railway circuit maintenance can accomodate the ground wire, can carry out the ground connection to many maintenance points under the condition of a ground point simultaneously, avoid repeated ground connection operation, make ground connection operation more convenient.

Drawings

Fig. 1 is a schematic structural view of a temporary grounding device for subway line maintenance.

Fig. 2 is a partial view of a temporary grounding device a for subway line maintenance.

Fig. 3 is a front sectional view of a temporary grounding device for subway line maintenance.

Fig. 4 is a side sectional view of a temporary grounding device for subway line maintenance.

In the figure: the device comprises a support 1, a treading frame 2, a pedal 3, a jack 4, a hydraulic pump 5, a grounding pin 6, a guide pipe 7, a connecting rod 8, a fixed seat 9, a rotating shaft 10, a rotating wheel 11, a connecting wire 12, a grounding wire 13, a magnetic suction block 14, a cushion block 15, an extension rod 16 and a spring 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 4, in an embodiment of the present invention, a temporary grounding device for maintaining a subway line includes a bracket 1, a tread frame 2 is fixedly connected to one side of a lower portion of the bracket 1, a tread plate 3 is fixedly connected to a top surface of the tread frame 2, the tread plate 3 is a checkered plate, a jack 4 is fixedly installed on an inner side of a top portion of the bracket 1, the jack 4 is a hydraulic jack, the type of the jack 4 is JRCH-120, the jack is manufactured and sold by taizhou yuding hydraulic tool limited company, a hydraulic pump 5 is fixedly installed on the top surface of the bracket 1, the hydraulic pump 5 is a portable manual hydraulic pump, the type of the hydraulic pump 5 is SYB-1, the hydraulic pump 5 is manufactured and sold by taizhou yuding hydraulic tool limited company, the hydraulic pump 5 is connected with a pipeline of the jack 4, a grounding pin 6 is installed below the jack 4, the grounding pin 6 is made of a conductive material, a top end of the grounding pin, the bottom end of the grounding needle 6 is conical, a guide tube 7 is sleeved outside the grounding needle 6, two guide tubes 7 are arranged above and below the guide tubes 7, connecting rods 8 are fixedly connected to the outer wall of each guide tube 7 at equal intervals on the circumference, one end of each connecting rod 8 is fixedly connected to the inner side of the corresponding support 1, a fixed seat 9 is fixedly installed on one side of the upper portion of each support 1, a rotating shaft 10 is rotatably connected to the inner side of each fixed seat 9, each rotating shaft 10 is made of an electrically conductive material, one end of each rotating shaft 10 penetrates through each fixed seat 9 and is fixedly connected with a rotating wheel 11, the other end of each rotating shaft 10 penetrates through each fixed seat 9 and is rotatably connected with one end of a connecting wire 12, each connecting wire 12 is an electrically conductive wire, the other end of each connecting wire 12 is fixedly connected to the outer wall of the, magnetism is inhaled piece 14 and is the magnetism material, one side fixedly connected with cushion 15 of magnetism piece 14, and cushion 15 flushes with the tip of earth connection 13, and cushion 15 is the annular, and cushion 15 is the rubber material, and the middle part outer wall symmetry fixed mounting of earthing rod 6 has extension rod 16, the equal fixedly connected with spring 17's of extension rod 16's tip outer wall one end, and spring 17's the other end fixedly connected with support 1's top is inboard.

The utility model discloses a theory of operation is:

when the grounding device is used, firstly, a user stands on the pedal 3 on the treading frame 2 to increase the total weight of the support 1, then the user holds the pressure rod of the hydraulic pump 5 to press the jack 4, the support rod of the jack 4 starts to extend to press the grounding pin 6, so that the grounding pin 6 moves downwards along the guide pipe 7, finally, the grounding pin 6 is inserted into the ground, then the user takes the magnetic suction block 14 at the end part of the grounding wire 13, pulls the handle to pull the grounding wire 13 out of the rotating shaft 10 in the fixed seat 9, then the magnetic suction block is sucked at a construction position, at the moment, the cushion block 15 is in contact with the railway line track at the construction position, meanwhile, the end part of the grounding wire 13 is in contact with the outer wall of the railway line track, at the moment, the railway line track, the grounding wire 13, the rotating shaft 10, the connecting wire 12 and the grounding pin, magnetic attraction block 14 is taken off from the railway track, then runner 11 is rotated, runner 11 drives pivot 10 to rotate, pivot 10 is accomodate the earth connection 13 to the outside of pivot 10 with the earth connection, then the user stands on footboard 3 again, adjust and pull hydraulic pump 5 and make jack 4 begin to shrink, make earth pin 6 be exerted an ascending power under the effect of spring 17 and extension rod 16 this moment, make earth pin 6 be pulled out from ground and remove the ground connection, then withdraw the device with waiting for next use.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a subway line maintenance is with interim earthing device, includes support (1), its characterized in that: the lower portion of the support (1) is fixedly connected with a treading frame (2), the top surface of the treading frame (2) is fixedly connected with a pedal (3), a jack (4) is fixedly installed on the inner side of the top of the support (1), a hydraulic pump (5) is fixedly installed on the top surface of the support (1), the hydraulic pump (5) is connected with the jack (4) through a pipeline, a grounding needle (6) is arranged below the jack (4), a guide pipe (7) is sleeved outside the grounding needle (6), connecting rods (8) are fixedly connected with the outer wall of the guide pipe (7) in an equal circumference and equidistant mode, one end of each connecting rod (8) is fixedly connected to the inner side of the support (1), a fixing seat (9) is fixedly installed on one side of the upper portion of the support (1), a rotating shaft (10) is rotatably connected to the inner side of the fixing seat (, the other end of pivot (10) passes fixing base (9) and rotates the one end that is connected with connecting wire (12), the other end fixed connection of connecting wire (12) is on the upper portion outer wall of earthing rod (6), fixed earth connection (13) on the outer wall of pivot (10), piece (14) are inhaled to the one end outer wall fixedly connected with magnetism of earth connection (13), the middle part outer wall symmetry fixed mounting of earthing rod (6) has extension rod (16), the one end of the equal fixedly connected with spring (17) of tip outer wall of extension rod (16), the top of the other end fixedly connected with support (1) of spring (17) is inboard.

2. A temporary grounding device for subway line maintenance as claimed in claim 1, wherein: the pedal (3) is a pattern plate, the jack (4) is a hydraulic jack, and the hydraulic pump (5) is a portable manual hydraulic pump.

3. A temporary grounding device for subway line maintenance as claimed in claim 1, wherein: the grounding pin (6) is made of a conductive material, the top end of the grounding pin (6) corresponds to the support rod of the jack (4), and the bottom end of the grounding pin (6) is conical.

4. A temporary grounding device for subway line maintenance as claimed in claim 1, wherein: the rotating shaft (10) is made of a conductive material, the connecting wire (12) is a conductive wire, the grounding wire (13) is made of a conductive material, and the magnetic attraction block (14) is made of a magnetic material.

5. A temporary grounding device for subway line maintenance as claimed in claim 1, wherein: one side fixedly connected with cushion (15) of piece (14) is inhaled to magnetism, and cushion (15) flush with the tip of earth connection (13), and cushion (15) are the annular, and cushion (15) are the rubber material.

6. A temporary grounding device for subway line maintenance as claimed in claim 1, wherein: the two guide tubes (7) are arranged up and down, and the grounding wire (13) is wound outside the rotating shaft (10) layer by layer.