CN114336109B

CN114336109B - Ground wire clamp device

Info

Publication number: CN114336109B
Application number: CN202210255518.4A
Authority: CN
Inventors: 夏志雄; 姚超楠; 陈黎丽; 彭元泉; 赵云云; 区峻超; 冼梓炜; 靳铠闻; 何秉桦; 郭晓晴; 贺平平; 徐贤衡
Original assignee: Foshan Power Supply Bureau of Guangdong Power Grid Corp
Current assignee: Foshan Power Supply Bureau of Guangdong Power Grid Corp
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-06-14
Anticipated expiration: 2042-03-16
Also published as: CN114336109A

Abstract

The application relates to the technical field of grounding wire tools, in particular to a grounding wire clamp device which comprises a wire clamp main body, a release swing arm, a lower clamping seat, a movable pawl and a driving rod; the releasing swing arm and the lower clamping seat respectively rotate a first rotating shaft and a second rotating shaft which are sleeved on the wire clamp main body; two ends of a first torsion spring sleeved on the first rotating shaft are respectively connected with the release swing arm and the wire clamp main body; two ends of a second torsion spring sleeved on the second rotating shaft are respectively connected with the lower clamping seat and the wire clamp main body; a first end of the release swing arm and a first end of the lower clamping seat are provided with a first positioning hook and a second positioning hook which are in hooking fit; the second end of the lower clamping seat is provided with a lower clamping jaw; the movable pawl is rotationally arranged on the top of the driving rod, and a pressure spring is arranged between the movable pawl and the driving rod; the interior of the lower clamping seat is provided with a ratchet part, and the movable pawl is provided with a pawl part matched with the ratchet part. This application has solved effectively and has wasted inconvenient technical problem of time of operation in the current earth connection instrument.

Description

Ground wire clamp device

Technical Field

The application relates to the technical field of grounding wire tools, in particular to a grounding wire clamp device.

Background

The portable short circuit grounding wire tool used in the current power system can be divided into a wire end clamp, a grounding lead, a grounding end clamp and an insulating operating rod according to the functional structure of each part. The grounding lead, the insulating operating rod and the grounding terminal wire clamp are all universal and basically have no difference; the existing conductor terminal clamp generally adopts two structural forms of spiral fastening and double-tongue spring fastening.

The double-tongue type spring fastening mode adopted by the conductor end wire clamp has the defects that the connection is unstable and the wire clamp is easy to fall off in the using process, so that life casualty accidents are caused; and to spiral fastening mode, change the rotary motion of insulator spindle into the vertical linear motion of clamping piece through the screw thread to realize that the fastener compresses tightly the conductor, the reliability is very high, connects firmly, but this kind of rotary motion through the spiral line with the insulating bar changes the vertical linear motion of clamping piece into, has sacrificed speed and has guaranteed the clamp force, needs the operating personnel to twist many circles to reciprocating, and because the electricity of connecing presss from both sides the opening very big, causes a large amount of invalid strokes.

In addition, the installation position of the power equipment is in a high position, so that the installation position of the temporary grounding wire is higher, the operating rod of the grounding wire is usually longer, the conductor end wire clamp is fixed on the screw rod and rotates in a non-directional manner, and in addition, the grounding copper wire is very heavy and can be operated smoothly by great effort; operating personnel need stand and wear insulating gloves on insulating ladder, and the rotatory dozens of rings of both hands of lifting waste time and energy, consume a large amount of physical power, still lose balance easily and fall.

Disclosure of Invention

In view of this, an object of the present application is to provide an earth wire clamping device for solving the technical problem of inconvenience in operation in the existing earth wire tool.

In order to achieve the purpose, the application provides the following technical scheme:

a grounding wire clamp device comprises a wire clamp main body, a release swing arm, a lower clamping seat, a movable pawl and a driving rod; the top end of the wire clamp main body is provided with an upper clamping jaw in a bending and extending manner; the wire clamp main body is provided with a first rotating shaft and a second rotating shaft; the middle part of the release swing arm is rotatably sleeved on the first rotating shaft, and the middle part of the lower clamping seat is rotatably sleeved on the second rotating shaft; a first torsion spring is sleeved on the first rotating shaft, the first end of the first torsion spring is connected with the release swing arm, and the second end of the first torsion spring is connected with the wire clamp main body; a second torsion spring is sleeved on the second rotating shaft, the first end of the second torsion spring is connected with the lower clamping seat, and the second end of the second torsion spring is connected with the wire clamp main body; a first positioning hook is arranged at the first end of the release swing arm, and a second positioning hook which is hooked and matched with the first positioning hook is arranged at the first end of the lower clamping seat; a lower clamping jaw is arranged at the second end of the lower clamping seat, and a clamping wall facing the inner wall of the lower clamping jaw is arranged at the second end of the release swing arm; the movable pawl is rotatably arranged on the top of the driving rod, and a pressure spring is arranged between the movable pawl and the driving rod; the inside of lower holder is equipped with the ratchet portion, the activity pawl is equipped with the pawl portion that matches with the ratchet portion.

Preferably, in the above ground wire clamping device, a loosening direction of the first torsion spring is opposite to a loosening direction of the second torsion spring.

Preferably, in the above ground wire clamp device, the wire clamp main body includes two guard plates arranged in parallel, an installation space is formed between the two guard plates, and the release swing arm, the lower clamp holder, and the movable pawl are all installed in the installation space.

Preferably, in the ground wire clamp device described above, the clamp main body is provided with a stopper located above the second end of the release swing arm.

Preferably, in the above ground wire clamp device, a bottom end surface of the movable pawl is an inclined surface, and the pressing spring is disposed on a lower side of the inclined surface.

Preferably, in the above ground wire clamp device, the clamp body is further provided with a limiting shaft; the movable pawl is provided with a limiting groove corresponding to the limiting shaft.

Preferably, in the above ground wire clamp device, a fan-shaped cavity is provided inside the lower clamp holder, and the ratchet portion is provided on an inner wall of the cavity.

Preferably, in the above ground wire clamp device, a terminal fixing seat is provided at a bottom of the clamp body.

Preferably, in the above ground wire clamping device, the driving lever includes an insulating operation lever and a clamping screw; the bottom end of the clamping screw rod is in threaded connection with the insulating operating rod; the top end of the clamping screw rod is connected with the movable pawl.

Preferably, in the above ground wire clamp device, a screw rod connecting seat is detachably provided at a top end of the clamping screw rod; the movable pawl is pivoted on the screw rod connecting seat.

Compared with the prior art, the beneficial effects of this application are:

when a wire enters a wire clamp opening formed by a wire clamp main body and an upper clamping jaw, the wire is firstly contacted with a release swing arm, the release swing arm rotates around a first rotating shaft after being pushed by the wire, after rotating for a certain angle, a first positioning hook can be separated from a second positioning hook, a lower clamping seat is separated from the constraint of the release swing arm, and under the elastic action of a second torsion spring, the lower clamping seat rotates around the second rotating shaft until the lower clamping jaw is contacted and attached with the wire, the lower clamping seat stops rotating, and at the moment, the wire is clamped under the combined action of the first torsion spring and the second torsion spring; then through the activity of actuating lever control activity pawl for the pawl portion of activity pawl is connected with the ratchet portion meshing cooperation of holder down, so that form reverse locking to holder down, reach the effect of holding holder along the direction wobbling of keeping away from the wire down, make the wire firmly press from both sides tightly by the double-layered wall of release swing arm and the centre gripping space that holder formed down, whole operation only need simply operate the actuating lever and can accomplish the centre gripping to the wire, has easy operation, use not hard advantage, the inconvenient technical problem of taking a lot of trouble when having the operation in the current earth connection instrument has been solved effectively.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a partial cross-sectional view of a ground clamp device according to an embodiment of the present application;

fig. 2 is a perspective view of a ground clamp device according to an embodiment of the present disclosure;

fig. 3 is an internal structural view of a ground clamp device according to an embodiment of the present disclosure;

fig. 4 is a disassembled schematic view of a ground clamp device according to an embodiment of the present disclosure;

fig. 5 is a diagram illustrating an initial state of a wire clamping opening of a ground wire clamping device according to an embodiment of the present invention when a wire is to be hung;

FIG. 6 is a diagram illustrating an exemplary embodiment of a ground clamp assembly for clamping a larger diameter conductor;

FIG. 7 is a diagram illustrating an exemplary embodiment of a ground clamp assembly for clamping a smaller diameter conductor;

FIG. 8 is a schematic locking diagram of the pawl portion and the pawl portion of a ground clamp device according to an embodiment of the present disclosure after clamping a larger diameter wire;

FIG. 9 is a schematic locking diagram of the pawl portion and the pawl portion of a ground clamp device according to an embodiment of the present application after clamping a small diameter wire;

fig. 10 is an isolated schematic view of a ratchet portion and a pawl portion of a ground cable clamp device according to an embodiment of the present application;

fig. 11 is a schematic diagram illustrating a release swing arm and a lower holder of a ground wire clamp device according to an embodiment of the present application being disassembled to release a lead;

fig. 12 is a reset state diagram of the movable pawl and the lower holder of the ground clamp device according to the embodiment of the present application after being reset again.

In the figure:

100. a wire clamp main body; 110. a first rotating shaft; 120. a second rotating shaft; 130. a limiting shaft; 140. an upper clamping jaw; 150. a limiting block; 200. releasing the swing arm; 210. a first positioning hook; 220. a chuck wall; 300. a lower clamping seat; 310. a second positioning hook; 320. a lower jaw; 330. a ratchet portion; 340. a cavity; 400. a movable pawl; 410. a pawl portion; 420. a limiting groove; 500. a drive rod; 510. an insulating operating rod; 520. clamping the screw rod; 530. a screw rod connecting seat; 531. a pivot shaft; 540. a nut seat; 550. riveting; 560. a connecting pin; 610. a first torsion spring; 620. a second torsion spring; 630. a pressure spring; 700. a wiring terminal fixing seat; 800. a wire; 910. a wiring terminal; 920. and a ground lead.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort belong to the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description of the embodiments of the present application and for simplicity of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements. Specific meanings of the above terms in the embodiments of the present application can be understood as specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 12, the present application provides a ground clamp apparatus, which includes a clamp main body 100, a releasing swing arm 200, a lower clamp holder 300, a movable pawl 400, and a driving rod 500; the top end of the wire clamp body 100 is provided with an upper clamping jaw 140 in a bending and extending manner; the wire clamp body 100 is provided with a first rotating shaft 110 and a second rotating shaft 120; the middle part of the release swing arm 200 is rotatably sleeved on the first rotating shaft 110, and the middle part of the lower clamping seat 300 is rotatably sleeved on the second rotating shaft 120; a first torsion spring 610 is sleeved on the first rotating shaft 110, a first end of the first torsion spring 610 is connected with the release swing arm 200, and a second end of the first torsion spring 610 is connected with the wire clamp main body 100; the second rotating shaft 120 is sleeved with a second torsion spring 620, a first end of the second torsion spring 620 is connected with the lower holder 300, and a second end of the second torsion spring 620 is connected with the wire clamp main body 100; a first positioning hook 210 is arranged at the first end of the release swing arm 200, and a second positioning hook 310 hooked and matched with the first positioning hook 210 is arranged at the first end of the lower holder 300; the second end of the lower clamping base 300 is provided with a lower clamping jaw 320, and the second end of the release swing arm 200 is provided with a clamping wall 220 facing the inner wall of the lower clamping jaw 320; the movable pawl 400 is rotatably arranged on the top of the driving rod 500, and a pressure spring 630 is arranged between the movable pawl 400 and the driving rod 500; the lower holder 300 is provided inside with a ratchet portion 330, and the movable pawl 400 is provided with a pawl portion 410 matching the ratchet portion 330.

More specifically, the top end of the wire clamp body 100 is bent downwards to form an upper clamping jaw 140, and the upper clamping jaw 140 is mainly used for assisting in releasing the swing arm 200 and the lower clamping jaw 320 to clamp the wire 800; the releasing swing arm 200 and the wire clamp main body 100 are respectively provided with a jack for inserting and fixing two ends of the first torsion spring 610; the lower clamp holder 300 and the wire clamp main body 100 are respectively provided with a jack for inserting and fixing two ends of the second torsion spring 620; the chuck wall 220 is a curved wall body arranged at the second end of the release swing arm 200, and is convenient to cooperate with the lower clamping jaw 320 to clamp the wire 800; the ratchet portion 330 and the pawl portion 410 are provided with matching teeth, and the ratchet portion 330 and the pawl portion 410 are locked by the engagement of the teeth.

In the operation of this embodiment, when the wire 800 enters the wire clamp opening formed by the wire clamp main body 100 and the upper jaw 140, the wire 800 contacts the release swing arm 200 first, the release swing arm 200 rotates around the first rotating shaft 110 after receiving the pushing force of the wire 800, after rotating a certain angle, the first positioning hook 210 disengages from the second positioning hook 310, the lower clamp holder 300 also disengages from the constraint of the release swing arm 200, and under the elastic action of the second torsion spring 620, the lower clamp holder 300 rotates around the second rotating shaft 120 until the lower jaw 320 contacts and fits with the wire 800, the lower clamp holder 300 stops rotating, and at this time, the wire 800 is clamped under the combined action of the first torsion spring 610 and the second torsion spring 620; then, the driving rod 500 is used for controlling the movable pawl 400 to move, so that the pawl portion 410 of the movable pawl 400 is meshed and matched with and connected with the ratchet portion 330 of the lower holder 300, the lower holder 300 is locked reversely, the effect of preventing the lower holder 300 from swinging along the direction far away from the wire 800 is achieved, the wire 800 is firmly clamped by a clamping space formed by the clamping wall 220 of the releasing swing arm 200 and the lower holder 300, the whole operation can complete clamping of the wire 800 only by simply operating the driving rod 500, the wire grounding wire clamping device has the advantages of being simple in operation and free from using effort, and the technical problem that in an existing grounding wire tool, operation is inconvenient is effectively solved.

Further, in the present embodiment, the loosening direction of the first torsion spring 610 is opposite to the loosening direction of the second torsion spring 620. The loosening direction of the first torsion spring 610 is counterclockwise, the loosening direction of the second torsion spring 620 is clockwise, when the wire 800 enters the wire clamping opening and pushes the releasing swing arm 200 to separate the first positioning hook 210 from the second positioning hook 310, the releasing swing arm 200 rotates counterclockwise under the elastic action of the first torsion spring 610, the lower clamp holder 300 rotates clockwise under the elastic action of the second spring, so that the wire 800 is clamped between the clamp wall 220 of the releasing swing arm 200 and the lower clamp jaw 320, and the pawl portion 410 of the movable pawl 400 is engaged and connected with the ratchet portion 330 of the lower clamp holder 300 through engagement, so that the lower clamp holder 300 is reversely locked, and the wire 800 is firmly clamped.

Further, in the present embodiment, the wire clamp body 100 includes two guard plates disposed in parallel, an installation space is formed between the two guard plates, and the release swing arm 200, the lower holder 300, and the movable pawl 400 are all installed in the installation space. The both ends of first pivot 110 are connected with two backplate respectively, the both ends of second pivot 120 are connected with two backplate respectively, form installation space through the inside at double-layered main part 100, not only can be for releasing swing arm 200, lower holder 300 and activity pawl 400 provide the mounted position, guarantee to release swing arm 200, lower holder 300 and activity pawl 400 can be on the double-layered main part 100 correspondingly movable operation, and can also be to releasing swing arm 200, lower holder 300 and activity pawl 400 have the protection isolation effect, both avoid external force to press from both sides the destruction of main part 100 inner structure, can avoid the staff to be taken place by the condition of location hook or other sharp-pointed position fish tails again.

Further, in this embodiment, the wire clamp main body 100 is provided with a stopper 150 above the second end of the release swing arm 200. The stopper 150 can act as the stop piece of release swing arm 200 for stopping release swing arm 200 and continue to rotate along the clockwise when centre gripping wire 800, avoid wire 800 the condition emergence of pine to take off, the setting of holder 300 under the recombination can guarantee the stability to the wire 800 centre gripping.

More specifically, when the wire 800 enters the wire clamping opening formed by the wire clamping body 100 and the upper clamping jaw 140, the pushing force of the wire 800 on the release swing arm 200 pushes the release swing arm 200 to rotate, and the first positioning hook 210 and the second positioning hook 310 can be disengaged before the release swing arm 200 is stopped by the stop block 150.

Further, in the present embodiment, referring to fig. 1, the bottom end surface of the movable pawl 400 is an inclined surface, and the pressing spring 630 is disposed at the lower side of the inclined surface. The bottom end face of the movable pawl 400 is an inclined plane with a lower left and a higher right, and the pressure spring 630 is installed on the left side of the inclined plane, so that the movable pawl 400 can swing clockwise under the elastic action of the pressure spring 630, that is, the pawl part 410 at the top of the movable pawl 400 can swing rightward, so that the pawl part 410 is meshed and matched with the ratchet wheel part 330 of the lower holder 300 which rotates clockwise, and the purpose of reverse locking is achieved.

Further, in this embodiment, the wire clamp main body 100 is further provided with a limiting shaft 130; the movable pawl 400 is provided with a limiting groove 420 corresponding to the limiting shaft 130. The arrangement of the limiting shaft 130 and the limiting groove 420 can prevent the movable pawl 400 from swinging clockwise when the device is idle, so that the pawl portion 410 of the movable pawl 400 is staggered, the normal rotation of the lower holder 300 is prevented from being influenced by the pawl portion 410, when the lower holder 300 rotates to a required position, the movable pawl 400 is controlled to move downwards through the driving rod 500, a distance is reserved between the movable pawl 400 and the limiting shaft 130, the movable pawl 400 is allowed to have a gap swinging rightwards, so that the pawl portion 410 of the movable pawl 400 swings rightwards and is meshed and matched with the ratchet wheel portion 330 of the lower holder 300, and the reverse locking effect is achieved.

More specifically, the limit groove 420 is provided with an inclined surface with a height from left to right, and the distance between the movable pawl 400 and the limit shaft 130 can be controlled by the inclined surface in better cooperation with the up-and-down movement of the driving rod 500, so as to control the amplitude of the rightward swing of the movable pawl 400.

Further, in the present embodiment, a fan-shaped cavity 340 is disposed inside the lower holder 300, and the ratchet portion 330 is disposed on an inner wall of the cavity 340. The inner wall of the fan-shaped cavity 340 is provided with the ratchet part 330 consisting of a plurality of clamping teeth, so that when the lower holder 300 rotates to different angle positions due to clamping of wires 800 with different diameters, the pawl part 410 of the movable pawl 400 can be meshed and matched with a part of the clamping teeth of the ratchet part 330 of the lower holder 300, and the purpose of directional locking is achieved.

Further, in the present embodiment, referring to fig. 2, a terminal fixing base 700 is disposed at the bottom of the wire clamp body 100. The connecting part of the connecting terminal 910 which is externally connected with the grounding lead 920 and the grounding wire clamp device can be arranged through the connecting terminal fixing seat 700, so that the operation requirement of ensuring operation safety by grounding is met.

Further, in the present embodiment, referring to fig. 1, the driving rod 500 includes an insulating operating rod 510 and a clamping screw 520; the bottom end of the clamping screw rod 520 is in threaded connection with the insulating operating rod 510; the top end of the clamping screw 520 is connected with the movable pawl 400. The insulated operating rod 510 can be used as a handle operated by a worker, and has an insulated protection effect, the insulated operating rod 510 is rotated to enable the clamping screw rod 520 in threaded connection with the insulated operating rod 510 to rotate relative to the insulated operating rod 510 by utilizing the characteristics of thread design, so that the part of the clamping screw rod 520 positioned in the insulated operating rod 510 is shortened or lengthened, namely, the effect of controlling the stretching of the clamping screw rod 520 is achieved, the ascending or descending operation effect of the movable pawl 400 is realized, and the pawl part 410 of the movable pawl 400 is controlled to be meshed with or separated from the ratchet wheel part 330 of the lower clamp holder 300 according to actual requirements.

More specifically, the insulating operating rod 510 is provided with a central hole in the axial direction, a nut seat 540 is provided in the central hole, the nut seat 540 is fixed to the insulating operating rod 510 by a rivet 550, and the clamping screw 520 is screwed to the nut seat 540.

Further, in the present embodiment, referring to fig. 1, a screw connecting seat 530 is detachably disposed at a top end of the clamping screw 520; the movable pawl 400 is pivotally connected to the screw rod connecting seat 530. The movable pawl 400 can be detachably connected with the clamping screw rod 520 through the screw rod connecting seat 530, and a stable installation position can be provided for the movable pawl 400.

More specifically, the lead screw connecting seat 530 is fixedly connected to the clamping lead screw 520 by a plurality of connecting pins 560, and the movable pawl 400 is pivotally connected to the lead screw connecting seat 530 by a pivot shaft 531.

The specific working process of this embodiment:

(1) each time the operation is prepared, it is necessary to check whether the device is in an initial reset state, otherwise the device cannot work normally. Explanation of device reset: the insulating operating rod 510 is held by hand to rotate clockwise to drive the clamping screw 520 to move up linearly, and the clamping screw 520 synchronously drives the screw connecting seat 530 and the movable pawl 400 to move up vertically. When the movable pawl 400 moves upward and the limit groove 420 touches the lower surface of the limit shaft 130, the insulation operating rod 510 stops rotating, and the initial state reset of the wire clamp is completed, please refer to fig. 5, and the limit shaft 130 plays a role in positioning the initial state of the movable pawl 400. After the device is reset, the grounding operation of the line conductor 800 can be started, the insulating operating rod 510 is held by a hand, the device is lifted, and after the wire clamp opening is aligned with the conductor 800, the wire clamp opening of the device can be hung from the upper part of the conductor 800.

(2) When the wire 800 enters the wire clamp opening, the wire 800 contacts with the release swing arm 200, the release swing arm 200 rotates clockwise around the first rotating shaft 110 by a certain angle after being pushed by the wire 800 until the wire 800 pushes the release swing arm 200 to the inner side of the top end of the upper clamping jaw 140 (i.e. the inner side of the limiting block 150), the release swing arm 200 stops rotating at the moment, and the wire 800 is tightly attached to the limiting block 150. After the releasing swing arm 200 rotates by a certain angle under the thrust of the wire 800, the first positioning hook 210 on one side of the releasing swing arm is triggered to separate from the second positioning hook 310 matched with the releasing swing arm 300, and after the second positioning hook 310 on the releasing swing arm 300 is separated from the first positioning hook 210 on the releasing swing arm 200 under the torque force of the second torsion spring 620, the lower clamping jaw 320 rotates clockwise and upwards by a certain angle (under the torque force of the second torsion spring 620, the rotation angle of the lower clamping seat 300 is self-adapted to the wire diameter of the clamped wire 800), and until the lower clamping jaw 320 contacts and is attached to the lower surface of the wire 800, the lower clamping seat 300 stops rotating (see fig. 6 and 7). The characteristic meets the self-adaptive capacity of the lower clamping jaw 320, can self-adaptively clamp wires 800 with various specifications, and is always attached to the lower surface of the wire 800 to be clamped in each rotation, so that the clamping stroke between the lower clamping jaw 320 and the wire 800 is also shortened.

(3) The lower jaw 320 remains stationary after it comes into contact with the lower surface of the wire 800. At this time, the operator only needs to slightly rotate the insulating operating rod 510 counterclockwise, the clamping screw 520 screwed to the front end of the insulating operating rod 510 moves down linearly, and the clamping screw 520 synchronously drives the screw connecting seat 530 and the movable pawl 400 to move down vertically. When the movable pawl 400 moves downward, the inclined surface of the limit groove 420 of the movable pawl 400 gradually moves away from the limit shaft 130 of the movable pawl 400, and at this time, the movable pawl 400 is released along the axial degree of freedom, and then slightly swings at a certain angle left and right along the axial direction. Because the bottom end of the movable pawl 400 is a slope structure with a lower left and a higher right, and is supported by the supporting force of the pressure spring 630 at the left side of the bottom end, the movable pawl naturally swings to the right side by a certain angle until the right side of the bottom end of the movable pawl 400 is attached to the contact surface of the screw rod connecting seat 530. In the process of swinging the movable pawl 400 slightly to the right, the pawl portion 410 at the upper end thereof can swing to be engaged with the ratchet portion 330 of the lower holder 300 (see fig. 8 and 9), and at this time, the pawl portion 410 of the movable pawl 400 is engaged with the ratchet portion 330 of the lower holder 300. Due to the structural characteristic of reverse locking of the ratchet teeth, the lower cartridge 300 is allowed to rotate only clockwise, and the degree of freedom of counterclockwise rotation is limited by the ratchet tooth structure formed by the pawl portion 410 and the ratchet portion 330. When the movable pawl 400 is engaged with the ratchet of the lower holder 300, the insulating operating rod 510 is rotated slightly counterclockwise to drive the lower holder 300 to rotate slightly clockwise to apply a clamping force on the wire 800 until the insulating operating rod 510 cannot be screwed clockwise, and the wire 800 is clamped firmly by a wire clamp, so that the hanging operation of the grounding wire clamp device on the wire 800 is completed.

(4) After the operation is finished, the operator only needs to slightly rotate the insulating operating rod 510 clockwise to control the clamping screw 520 screwed at the upper end of the operating rod to move linearly upwards, and the clamping screw 520 synchronously drives the screw connecting seat 530 and the movable pawl 400 to move vertically upwards. When the movable pawl 400 moves upward, the inclined surface of the limiting groove 420 of the movable pawl 400 gradually approaches the limiting shaft 130, and after the inclined surface of the limiting groove 420 of the movable pawl 400 contacts the limiting shaft 130, the movable pawl 400 is limited by the limiting shaft 130 to force the movable pawl 400 to swing to the left by a certain angle, and at this time, the pawl part 410 at the upper end of the movable pawl 400 is instantaneously disengaged from the ratchet part 330 of the lower clamp holder 300 (see fig. 10).

(5) After each operation of the grounding wire is finished, an operator needs to manually reset the grounding wire to return to an initial operation state, and then the next grounding operation can be carried out. The lower clamp holder 300 is manually pushed to rotate counterclockwise, the lower clamp holder 300 is pushed to be hooked with the first positioning hook 210 on the release swing arm 200 again (see fig. 12), then, the operator needs to slightly rotate the insulating operating rod 510 clockwise until the limiting groove 420 of the movable clamping jaw is attached to the limiting shaft 130, so that the degree of freedom of the movable clamping jaw in axial upward movement is limited, at this time, the insulating operating rod 510 cannot be twisted clockwise any more, and the ground wire is in an initial operation state.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A ground wire clamp device is characterized by comprising a wire clamp main body, a release swing arm, a lower clamp holder, a movable pawl and a driving rod;

the top end of the wire clamp main body is provided with an upper clamping jaw in a bending and extending manner;

the wire clamp main body is provided with a first rotating shaft and a second rotating shaft;

the middle part of the release swing arm is rotatably sleeved on the first rotating shaft, and the middle part of the lower clamping seat is rotatably sleeved on the second rotating shaft;

A first torsion spring is sleeved on the first rotating shaft, the first end of the first torsion spring is connected with the release swing arm, and the second end of the first torsion spring is connected with the wire clamp main body;

a second torsion spring is sleeved on the second rotating shaft, the first end of the second torsion spring is connected with the lower clamping seat, and the second end of the second torsion spring is connected with the wire clamp main body;

a first positioning hook is arranged at the first end of the release swing arm, and a second positioning hook which is hooked and matched with the first positioning hook is arranged at the first end of the lower clamping seat;

a second end of the lower clamping seat is provided with a lower clamping jaw, and a second end of the release swing arm is provided with a clamping wall facing the inner wall of the lower clamping jaw;

the movable pawl is rotatably arranged on the top of the driving rod, and a pressure spring is arranged between the movable pawl and the driving rod;

a ratchet part is arranged in the lower clamping seat, and the movable pawl is provided with a pawl part matched with the ratchet part;

the wire clamp main body is further provided with a limiting shaft, and the movable pawl is provided with a limiting groove corresponding to the limiting shaft.

2. A ground clamp arrangement according to claim 1, characterized in that the unwinding direction of the first torsion spring is opposite to the unwinding direction of the second torsion spring.

3. A ground clamp device according to claim 1, wherein the clamp body includes two guard plates arranged in parallel, an installation space is formed between the two guard plates, and the release swing arm, the lower holder and the movable pawl are all installed in the installation space.

4. A ground clamp device according to claim 1, wherein the clamp body is provided with a stop block above the second end of the release swing arm.

5. A ground clamp device according to claim 1, wherein the bottom end face of the movable pawl is an inclined face, and the pressing spring is provided on a lower side of the inclined face.

6. A ground clamp device according to claim 1, wherein the lower clamp holder is provided with a fan-shaped cavity therein, and the ratchet portion is provided on an inner wall of the cavity.

7. A ground clamp arrangement as claimed in claim 1, wherein the clamp body is provided with terminal holders at the bottom thereof.

8. The ground wire clamp device according to any one of claims 1 to 7, wherein the drive lever comprises an insulating operating lever and a clamping screw;

the bottom end of the clamping screw rod is in threaded connection with the insulating operating rod;

The top end of the clamping screw rod is connected with the movable pawl.

9. The ground wire clamp device according to claim 8, wherein a lead screw connecting seat is detachably provided on a top end of the clamping lead screw;

the movable pawl is pivoted on the screw rod connecting seat.