CN105186152A - High altitude grounding device grounding clamp mechanism - Google Patents

Abstract

The invention discloses a grounding clamping mechanism for a high-altitude grounding device, which comprises a base, the top of the base is provided with a wiring pile head and a clamp arm, and a ground wire is connected to the wiring pile head; the clamp arm includes a first and a second clamping arm. Two clamping arms; both the first clamping arm and the second clamping arm are hinged to the top of the base through the hinge; the first clamping arm and the second clamping arm are sleeved with a movable chuck, which can be realized when the movable chuck moves up. Clamping action, the release action is realized when the mobile chuck moves down; the inside of the base is set in the threaded hole, the rotating shaft passes through the threaded hole, and the threaded connection is between the rotating shaft and the threaded hole; the upper end of the rotating shaft and the mobile chuck The disk phases are fixedly connected; a clamping plate is fixed at the lower end of the rotating shaft. The grounding clamping mechanism for high-altitude grounding devices of the present invention has the advantages of being convenient for maintenance personnel to quickly ground, having a simple structure, simple and reliable grounding clamping and releasing actions, and high grounding operation efficiency.

Description

Ground clamping mechanism for high-altitude grounding device

technical field

The invention relates to a ground clamping mechanism for a high-altitude grounding device.

Background technique

Grounding (earthing) refers to the neutral point of the power system and electrical devices, the exposed conductive parts of electrical equipment and the conductive parts outside the device are connected to the earth through conductors. In the power system, the ground wire is an important tool to ensure the safety of the staff when the voltage appears unexpectedly on the equipment and lines that have been powered off. The function of the grounding wire is to prevent the human body from being harmed by the sudden call of the equipment or the induced voltage generated by the adjacent high-voltage live equipment when the high-voltage equipment is powered off for maintenance or other work, and at the same time discharge the residual charge of the power-off equipment.

Installing and removing temporary ground wires is an important maintenance operation in power systems. At present, the short-circuit grounding wire is usually used in the maintenance work of the substation equipment in the substation, and the short-circuit grounding wire is mainly hung on the maintenance equipment or the wire by using an insulating operating rod. However, at the substation maintenance site, the grounding point of some equipment is too high, and it is very difficult for the staff to hang the grounding wire manually. Voltage equipment is more suitable, but for open equipment with a voltage level of 500 kV and UHV equipment of 1000 kV, due to the large insulation distance of the equipment, the installation height of the equipment is relatively high, and it is difficult to use the method of manually hanging wires on insulating rods. Use bucket trucks to send workers to high places and hang them manually; relying on high-altitude bucket trucks has high requirements for workers and high risk factors.

The Chinese invention patent with application number 201520316175.3 discloses a substation high-altitude grounding wire assembly and disassembly device, including a base, a telescopic rod, and a grabbing device. The base uses a tripod support frame, the lifting rod uses a pneumatic telescopic rod, and the grabbing device adopts a pneumatic chuck. The tripod support frame is installed at the bottom of the pneumatic telescopic rod, and the grabbing device is fixed on the top of the pneumatic telescopic rod with bolts. Connect with the main air pipe, connect the bottom of the pneumatic telescopic rod and the air valve with a telescopic rod air pipe, connect the three-jaw chuck and the air valve with the chuck inlet pipe and the chuck inlet pipe, and install the pneumatic control box and air pump on the transport push On board, control the pneumatic system. This grounding device has problems such as the need to configure an air source, the air source needs to be additionally equipped with a transport vehicle, the structure of the three-grip chuck is complex, and the grasping reliability is not high.

Contents of the invention

The present invention aims to avoid the disadvantages of the above-mentioned prior art, and provides a grounding clamping mechanism for high-altitude grounding devices, so that maintenance personnel can quickly ground, the structure is simple, and the grounding clamping and releasing actions are simple and reliable.

The present invention adopts the following technical solutions to solve the technical problems.

The ground clamping mechanism used for high-altitude grounding devices is characterized in that it includes a base 1, and the top of the base 1 is provided with a wiring pile head 2 and a clamp arm, and the wiring pile head 2 is connected with a grounding wire 3 There are two clamp arms, respectively the first clamp arm 4 and the second clamp arm 5; the first clamp arm 4 and the second clamp arm 5 are connected to the top of the base 1 through the hinge 6 Hinged; the first clamp arm 4 and the second clamp arm 5 are sleeved with a movable chuck 7, and when the movable chuck 7 moves up, the distance between the two clamp arms is reduced to realize the clamping action. When the movable chuck 7 moves down, the distance between the two clamp arms increases to realize the release action;

The inside of the base 1 is arranged in a threaded hole, and a rotating shaft 8 passes through the threaded hole, and the rotating shaft 8 is threadedly connected with the threaded hole; the upper end of the rotating shaft 8 passes through a bearing 13 It is connected with the moving chuck 7; a clamping plate 9 is fixed on the lower end of the rotating shaft 8.

The structural features of the ground clamping mechanism for the high-altitude grounding device of the present invention also lie in:

Both the first clamping arm 4 and the second clamping arm 5 include a chuck 10 and a rod body 11; the bottom end of the rod body 11 is hinged on the top of the base 1, and the chuck 10 is provided with the top end of the rod body 11 ; The clips 10 of the two clamp arms are arranged opposite to each other, and when the clips 10 of the two clamp arms are engaged with each other, they can just clamp the wire.

The base 1 includes a cylinder 101 and a frustum of a cone 102, the cylinder 101 is located above the frustum of a cone 102 and the two are coaxially arranged; the clamp arm is located at the top of the cylinder 101; the threaded hole is located at the top of the cylinder 101 is centered and coaxial with the cylinder 101; the frustum 102 is a hollow structure; the clamping plate 9 is located in the inner cavity of the frustum 102.

The clamping plate 9 is composed of two intersecting plate bodies.

Compared with the prior art, the beneficial effects of the present invention are reflected in:

The ground clamping mechanism for high-altitude grounding device of the present invention includes a base, the top of the base is provided with a wiring pile head and a clamping arm, and a grounding wire is connected to the wiring pile head; there are two clamping arms, respectively the first The clamp arm and the second clamp arm; the first clamp arm and the second clamp arm are hinged with the top of the base through the hinge; a movable chuck is sleeved on the first clamp arm and the second clamp arm, and the movable chuck When moving up, the distance between the two clamping arms is reduced to realize the clamping action, and when the moving chuck is moving down, the distance between the two clamping arms is increased to realize the releasing action; The hole passes through, and the rotating shaft is threadedly connected with the threaded hole; the upper end of the rotating shaft is fixedly connected with the movable chuck; the lower end of the rotating shaft is fixed with a clamping plate.

The ground clamping mechanism needs to cooperate with a lifting device 14 to use. The lifting device 14 includes a four-claw clamp, a rotating shaft, a high-definition camera, a multi-section lifting rod, a folding tripod, a controller, and a power supply.

Operate the controller to make the electric lifting rod rise to drive the whole grounding clamping mechanism to move upwards, the clamp arm rises to the required height (the clamp arm is parallel to the wire to be grounded), and the operation controller makes the rotating shaft rotate clockwise to drive the four-claw clamp The clamp and the four-claw clamp drive the clamping plate, and the clamping plate drives the rotating shaft. There are threads on the rotating shaft, which cooperate with the thread limit, so that the rotating shaft moves upward, and the upward movement of the rotating shaft drives the mobile chuck to move upward. The chuck drives the clamping arm to clamp, so that the clamping arm clamps the wire, and completes the grounding work of the one-phase wire.

The grounding clamping mechanism for high-altitude grounding device of the present invention has the advantages of being convenient for maintenance personnel to quickly ground, simple structure, simple and reliable grounding clamping and releasing actions, and high grounding operation efficiency.

Description of drawings

FIG. 1 is a schematic structural view of a grounding clamping mechanism for a high-altitude grounding device according to the present invention.

Fig. 2 is a schematic diagram of the lifting device matched with the ground clamping mechanism for the high-altitude grounding device of the present invention.

Numbers in attached drawings 1 to 2: 1 base, 101 cylinder, 102 round table body, 2 wiring pile head, 3 grounding wire, 4 first clamping arm, 5 second clamping arm, 6 hinged part, 7 moving card Disk, 8 rotating shafts, 9 clamping plates, 10 chucks, 11 rod bodies, 12 four-claw clips, 1201 claws, 13 bearings, 14 lifting devices, 15 tripods, 16 rotating shafts.

The present invention will be further described below through specific embodiments and in conjunction with the accompanying drawings.

Detailed ways

Referring to Figures 1 to 2, the ground clamping mechanism for high-altitude grounding devices of the present invention includes a base 1, and the top of the base 1 is provided with a wiring pile head 2 and a clamping arm, and on the wiring pile head 2 There are two clamp arms, namely the first clamp arm 4 and the second clamp arm 5; the first clamp arm 4 and the second clamp arm 5 are connected to the base through the hinge 6 The top of the seat 1 is hinged; the first clamp arm 4 and the second clamp arm 5 are sleeved with a movable chuck 7, and when the movable chuck 7 moves up, the distance between the two clamp arms is reduced to realize clamping. Tightening action, when the movable chuck 7 moves down, the distance between the two clamping arms increases to realize the release action;

The inside of the base 1 is arranged in a threaded hole, and a rotating shaft 8 passes through the threaded hole, and the rotating shaft 8 is threadedly connected with the threaded hole; the upper end of the rotating shaft 8 passes through a bearing 13 It is connected with the moving chuck 7; a clamping plate 9 is fixed on the lower end of the rotating shaft 8. The clamping plate 9 is connected with a four-claw clamp 12 and driven to rotate by the four-claw clamp 12 . When the clamping plate 9 rotates, it drives the rotating shaft to rotate. The rotating shaft is threadedly connected with the base, and a screw nut pair is formed between the two. The base is fixed and is equivalent to a nut, and the rotating shaft is equivalent to a screw. Therefore, when the rotating shaft rotates, it also moves axially in the threaded hole, thereby driving the movable chuck to move up and down, thereby realizing the clamping and releasing of the two clamping arms. During specific work, the chucks of the two clamping arms are used to clamp the maintenance equipment or wires, thereby realizing the grounding of the maintenance equipment or wires. The conductive connection between the grounding pile head, the grounding wire and the clamping arm is to realize the grounding function.

Both the first clamping arm 4 and the second clamping arm 5 include a chuck 10 and a rod body 11; the bottom end of the rod body 11 is hinged on the top of the base 1, and the chuck 10 is provided with the top end of the rod body 11 ; The clips 10 of the two clamp arms are arranged opposite to each other, and when the clips 10 of the two clamp arms are engaged with each other, they can just clamp the wire.

The inner side of the chuck is a concave arc-shaped groove, and when the two chucks abut against each other, the two arc-shaped grooves are engaged with each other to just clamp the wire.

The base 1 includes a cylinder 101 and a frustum of a cone 102, the cylinder 101 is located above the frustum of a cone 102 and the two are coaxially arranged; the clamp arm is located at the top of the cylinder 101; the threaded hole is located at the top of the cylinder 101 is centered and coaxial with the cylinder 101; the frustum 102 is a hollow structure; the clamping plate 9 is located in the inner cavity of the frustum 102.

The clamping plate 9 is composed of two intersecting plate bodies.

The two boards intersect each other perpendicularly, or intersect in an X shape to form four mutually isolated areas. The four claws 1201 of the four-jaw clip 12 are respectively located in one area. When the four-jaw clamp 12 rotates, it also drives the clamping plate to rotate. When the clamping plate rotates, along with the linear movement of the rotating shaft along the axis of the base, the clamping plate also moves in the four-claw clamping. Since the four-claw clamp has a certain depth, that is, the claws have a certain height, the clamping plate will not be separated from the four-claw clamp. The four-jaw clip 12 is located at the top of the lifting device.

During specific implementation, the ground clamping mechanism is arranged at the top of the lifting device 14 as shown in FIG. 2 . The ground clamping mechanism is placed on the top of the lifting device, and the clamping plate 9 and the four-jaw clamping clamp 12 are clamped to each other. When the ground clamping mechanism is arranged on the top of the lifting device, the clamping plate 9 is just clamped with the four-claw clamp 12; The claw clip 12 moves up and down within the height range. In order to stabilize the lifting device 14 on the ground, a tripod 15 is set at the lower end of the lifting device. The lifting device 14 can use different lifting control methods such as electric lifting, pneumatic lifting, hydraulic lifting or manual lifting.

The four-jaw clamp 12 is fixed on a rotating shaft 16, and the rotating shaft 16 is driven by a motor. When the motor drives the four-jaw clamp 12 to rotate, it will drive the clamping plate to rotate, thereby driving the rotating shaft and the moving chuck to move along the axial direction of the base, thereby realizing the clamping and releasing of the two clamping arms.

As shown in Fig. 1, two holes are arranged on the mobile chuck, and the rod body of each clamp arm is inserted into one hole. The bottom ends of the rod bodies of the two clamping arms are hinged on the base, and the distance between the hinged parts of the two clamping arms is smaller than the distance between the two holes of the moving chuck; The descent stops above the hinge. Moreover, since the distance between the two holes is fixed, and it is set so that when the movable chuck moves to the top of the rod body of the clamp arm, the chucks of the two clamp arms just engage with each other to realize the clamping action of the chuck. When the moving chuck descends from the top of the rod body, the distance between the two chucks increases to realize the release action of the chucks. The lifting of the mobile chuck is controlled by the rotating motor of the four-jaw clamp.

The ground clamping mechanism of the present invention needs to be used in conjunction with a lifting device 14 .

The ground clamping mechanism of the present invention includes components such as a clamp arm, a movable chuck, a bearing, a rotating shaft, a clamping plate, a base, a wiring pile head, and a grounding wire. As shown in Figure 2, the lifting device 14 includes a four-claw clamp, a rotating shaft, a high-definition camera, a multi-section lifting rod, a folding tripod, a controller, and a power supply. The grounding system is divided into two modules, the grounding clamping mechanism and the lifting device. After the grounding work is completed, the grounding clamping mechanism is removed, and the lifting rod of the lifting device is shortened, which is convenient for operation and maintenance personnel to carry. The multi-section lifting rod is a telescopic rod structure, which can be controlled by electric, pneumatic, hydraulic or manual control methods.

The clamping head of the clamping arm is used to clamp the wire. There are a pair of clamping arms. The lower end of the clamping arm is fixed on the top of the base. The angle between the jaws is completed to complete the clamping and releasing action of the jig arm.

The moving chuck is used to adjust the angle between the two clamping arms. The mobile chuck has two circular holes arranged symmetrically. The rod body of clamp arm passes through the circular hole of mobile chuck. A bearing is arranged in the middle of the mobile chuck. The upper end of the rotating shaft is fixed on the inner ring of the bearing, and the outer ring of the bearing is fixed on the movable chuck.

The upper end of the rotating shaft is connected with the inner ring of the bearing of the movable chuck, and the lower end is connected with the clamping plate, so that the clamping plate, the rotating shaft and the movable chuck can rotate as a whole and move up and down in a straight line. The middle section of the rotating shaft is provided with a thread, and the thread of the rotating shaft cooperates with the thread of the inner threaded hole of the base, and when the rotating shaft rotates, the rotating shaft is driven to move up and down. The two ends of the rotating shaft are provided with limit grooves, which are used to prevent the rotating shaft from over-rotating, so that the threads thereof are disengaged from the threaded holes.

The upper part of the base is a cylinder, and an axial threaded hole is arranged inside. The inside of the threaded hole is provided with a thread (with thread limiting function). The axis of rotation is threaded into the cylinder. The lower part of the circular platform body at the lower part of the base is provided with a skirt to guide the four-claw clamps into the clamping plate. The wiring pile head on the top of the base is used for fixedly connecting the grounding wire.

The snap-in plate is composed of two boards crossed and vertically connected together, and its top end is connected with the rotating shaft, and enters into the snap-in board through the four-claw clamp to rotate to drive the rotating shaft to rotate.

The four-jaw clamp is installed on the upper end of the rotating shaft, and the rotation of the rotating shaft drives the four-claw clamp to rotate.

The rotating shaft is installed on the top of the multi-section lifting rod, and a stepping motor is installed inside to complete the precise rotation under the control of the controller.

The high-definition camera, installed on the multi-section lifting rod, can shoot the relative position of the four-jaw clamp and the clamping plate, which is convenient for the controller to adjust the angle of the four-claw clamp;

The multi-section lifting rod is composed of multi-section telescopic rods, and the multi-section rod can be raised and lowered by electric power, driving the four-jaw clamp to rise and fall.

The controller and power interface are connected with the high-definition camera and the rotating shaft, used to display the relative position of the four-jaw clamp and the clamping plate, and control the clockwise or counterclockwise rotation of the rotating shaft. AC 220V is used for the entire controller and electric lifting rod powered by;

The foldable tripod is used to fix and stabilize the multi-section electric lifting pole. The tripod is propped up during use, and the tripod is folded after the work is finished for easy transportation.

The process of grounding operation is:

(1) Move the lifting device directly below the desired grounding wire, fold the tripod to expand the fixed lifting device, and install the grounding clamping mechanism directly on the four-claw clamp;

(2) Operate the controller to make the electric lifting rod rise to drive the entire grounding clamping mechanism to move upwards, the clamp arm rises to the required height (the clamp arm is parallel to the wire to be grounded), and the operation controller makes the rotating shaft rotate clockwise to drive The four-jaw clamp and the four-claw clamp drive the clamping plate, and the clamping plate drives the rotating shaft. There are threads on the rotating shaft, which cooperate with the thread limit, so that the rotating shaft moves upward, and the upward movement of the rotating shaft drives the moving chuck upward. Move, move the chuck to drive the clamping arm to clamp, so that the clamping arm clamps the wire, and completes the grounding work of a phase wire;

(3) After the clamping arm is clamped, operate the controller to lower the electric lifting rod, so that the four-claw clamp is separated from the clamping plate, and the grounding clamping mechanism is clamped on the wire;

(4) After the electric lifting rod is lowered, replace it with a new grounding clamping mechanism to complete the grounding work of the other two phase wires.

The process of un-grounding is:

(1) Move the electric lifting rod module to the bottom of the grounding clamping mechanism, operate the controller to make the electric lifting rod rise, and when the four-jaw clamp is close to the clamping plate, the high-definition camera will take pictures of the clamping plate and the four-claw clamping each other position, and by controlling the rotation of the rotating shaft, adjust the angle of the four-claw clamping, can enter the clamping plate, operate the controller again to make the electric lifting rod rise, complete the four-claw clamping and completely enter the clamping plate, stop the lifting rod from rising ;

(2) Control the rotating shaft to rotate counterclockwise, drive the four-jaw clip, the clamping plate, and the rotating shaft to rotate counterclockwise together, and the rotating shaft to rotate counterclockwise. When the shaft moves downward, pull the moving chuck downward to complete the opening of the clamp arm, and the clamp arm is separated from the wire;

(3) Operate the controller to lower the electric lifting rod, drive the grounding clamping mechanism to descend, remove the grounding clamping mechanism from the four-claw clamp, and complete the disengagement action of the other two phases of the grounding clamping mechanism again.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and range of equivalents of the elements are embraced in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

In addition, it should be understood that although this specification is described according to implementation modes, not each implementation mode only contains an independent technical solution, and this description in the specification is only for clarity, and those skilled in the art should take the specification as a whole , the technical solutions in the various embodiments can also be properly combined to form other implementations that can be understood by those skilled in the art.

Claims (4)

1. for the ground connection gripping body of high-altitude earthing device, it is characterized in that, comprise pedestal (1), the top of described pedestal (1) is provided with wiring pile crown (2) and jig arm, and described wiring pile crown (2) is connected with earth connection (3); Described jig arm has two, is respectively the first jig arm (4) and the second jig arm (5); Described first jig arm (4) and the second jig arm (5) are all hinged by articulated section (6) top with described pedestal (1); Described first jig arm (4) and the second jig arm (5) are arranged with a mobile chuck (7), when described mobile chuck (7) is moved, the spacing of two jig arm reduces and realizes pinching action, and when described mobile chuck (7) moves down, the spacing increase of two jig arm realizes release movement;

The inside of described pedestal (1) is arranged at screwed hole, and a rotation axis (8) is passed from described screwed hole, rotation axis (8) with between described screwed hole for being threaded; The upper end of described rotation axis (8) is connected with described mobile chuck (7) by bearing (13); The lower end of described rotation axis (8) is fixed with a card adapter plate (9).

2. the ground connection gripping body for high-altitude earthing device according to claim 1, is characterized in that, described first jig arm (4) and the second jig arm (5) include chuck (10) and the body of rod (11); The bottom of the described body of rod (11) is articulated with the top of pedestal (1), and described chuck (10) is provided with the top of the described body of rod (11); The chuck (10) of described two jig arm is oppositely arranged, and just can clamp wire when the chuck (10) of two jig arm fastens mutually.

3. the ground connection gripping body for high-altitude earthing device according to claim 1, it is characterized in that, described pedestal (1) comprises cylinder (101) and Rotary-table (102), and cylinder (101) is positioned at Rotary-table (102) top and the two is coaxially arranged; Described jig arm is positioned at described cylinder (101) top; Described screwed hole is positioned at the center of described cylinder (101) and coaxial with described cylinder (101); The structure that described Rotary-table (102) is hollow; Described card adapter plate (9) is arranged in the inner chamber of described Rotary-table (102).

4. the ground connection gripping body for high-altitude earthing device according to claim 1, is characterized in that, described card adapter plate (9) is made up of two cross one another plate bodys.