CN110148846A - Double bolt lockeds charge wire clamp of starting to exchange fire - Google Patents

Abstract

The invention discloses a double-bolt locking type live wire clamp, comprising: a J-shaped hook, one side of which is an open end, the other side is a closed end, the upper end is a hook-shaped groove, and the lower end is a clamping support surface , the clamping support surface has a first screw hole; the tightening bolt includes a top end and a screw part, the screw part fits through the first screw hole, and the top end is located in the J-shaped clamp The inside of the hook; the clamping head is fixedly arranged on the top end of the tightening bolt; the elastic gasket is sleeved on the screw part of the tightening bolt and is located outside the J-shaped hook; the lock A tightening nut is fitly connected to the screw part of the tightening bolt and is located outside the elastic washer. The live wire clamp can solve the technical problems that the tightening bolts become loose after long-term use, resulting in heating of the wires and poor safety.

Description

Double bolt locking live wire clamp

technical field

The invention relates to a double-bolt locking live wire clamp, which belongs to the technical field of live wire clamps.

Background technique

The live wire clip is mainly used to hook and fix the drain wire to the live wire, so as to realize the power connection between the live wire and the drain wire. The existing live wire clamp is mainly composed of a J-shaped hook, a tightening bolt and a clamping head. After the J-shaped hook is hung on the live wire, the tightening bolt is tightened so that the clamping head and the J-shaped hook are clamped together. Hold and fix the live wire, and then realize the fixing of the live wire clip and the live wire.

The applicant found at least the following problems in the actual application of the above structure: In long-term use, due to external forces, such as wind blowing and shaking of the live wire, the tightening bolts will be loosened, which will cause the wires to heat up and pose a great safety hazard.

Contents of the invention

The technical problem to be solved by the present invention is to provide a double-bolt locking live wire clamp to solve the technical problems in the prior art that the tightening bolts run loose after long-term use, resulting in heating of the wires and poor safety.

The technical solution of the present invention is: a double-bolt locking live wire clamp, the live wire clamp includes:

J-shaped hook, one side is an open end, the other side is a closed end, its upper end is a hook-shaped groove, and its lower end is a clamping support surface, and the clamping support surface has a first screw hole;

Tighten the bolt, including a top end and a screw part, the screw part fits through the first screw hole, and the top end is located inside the J-shaped hook;

The clamping head is fixedly arranged on the top end of the tightening bolt;

An elastic washer is sheathed on the screw part of the tightening bolt and is located outside the J-shaped hook;

A lock nut is mated and connected to the screw part of the tightening bolt, and is located outside the elastic washer;

Fix the live wire between the clamping head and the J-shaped hook by tightening the tightening bolt, and lock the tightening bolt on the clamping support surface by tightening the locking nut superior.

The live wire clip also includes: an operation hanging hole, which is arranged at the upper end of the back of the J-shaped hook.

The top surface of the clamping head is an arc-shaped concave surface.

The top surface of the clamping head is provided with cross-section grooves, and the inner wall of the hook-shaped groove is provided with cross-section grooves.

The dimension of the hook-shaped groove along the line of fire is 4-6 cm, and the dimension of the top surface of the clamping head along the line of fire is 4-6 cm.

The live wire clip also includes:

Drainage slots are arranged on the back of the J-shaped hook;

The drainage cover is detachably arranged on the back of the J-shaped hook.

A first semicircular groove is provided on the back of the J-shaped hook, and a corresponding second semicircular groove is provided on the drainage cover, and the first semicircular groove and the The second semicircular grooves together form the drainage groove after being closed.

The surface of the first semicircular groove is provided with cross-sectional grooves, and the surface of the second semicircular groove is provided with cross-sectional grooves.

The drainage duct is a cross structure, and the diameter of the duct in the vertical direction is different from the diameter of the duct in the horizontal direction.

The hook-shaped groove includes an edge portion close to the opening end, the edge portion is gradually inclined outward from top to bottom, and the edge portion gradually converges from both sides to the middle.

The beneficial effects of the present invention are: the present invention arranges elastic washers and lock nuts on the outside of the tightening bolts, and after the tightening bolts are tightened to make the clamping head and the J-shaped hook clamp and fix the live wire, the locking nuts and The elastic washer locks and fixes the tightening bolt, so as to prevent the axial movement of the tightening bolt. This device changes the live wire clamp from the original one tightening point to a double-bolt locking structure, so that when the wires are overlapped, one point is tightened by force, and the other point is locked to prevent loosening, each forming a locking It can effectively prevent the problem of poor contact and heating of the wire clamp caused by loose operation.

Description of drawings

Fig. 1 is the front view of the present invention;

Fig. 2 is the left view of the present invention;

Fig. 3 is the right view of the present invention;

Figure 4 is a front view of the J-shaped hook;

Fig. 5 is a left view of the J-shaped hook;

Figure 6 is a right view of the J-shaped hook;

Fig. 7 is a top view of the clamping support surface in Fig. 1;

Figure 8 is a schematic diagram of the cross-section of the wire slot;

Figure 9 is a sectional view of the cross section of the wire groove;

Figure 10 is a schematic diagram of tightening the bolts;

Figure 11 is a front view of the drainage cover;

Figure 12 is a left view of the drainage cover;

Figure 13 is a top view of the drainage cover;

Figure 14 is a front view of the clamping head;

Figure 15 is a top view of the clamping head;

Figure 16 is a side sectional view of the clamping head;

Explanation of reference signs:

1J-type hook, 2 clamping head, 3 tightening bolt, 4 lock nut, 5 elastic washer, 6 operation hanging hole, 7 drainage groove, 8 drainage cover, 9 fixing bolt, 10 fixing screw;

101 open end, 102 closed end, 103 hook-shaped groove, 104 clamping support surface, 105 first screw hole, 106 first semicircular groove, 107 cross-section bore pattern, 1031 edge portion;

201 fixing hole, 202 second screw hole; 203 top surface;

301 top end, 302 screw rod, 303 handle end, 304 lock groove;

801 second semicircular groove.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the invention is further introduced:

Referring to Fig. 1 to Fig. 16, according to the present invention, a double-bolt locking live wire clamp includes a J-shaped hook 1, tightening bolt 3, clamping head 2, lock nut 4, operation Hanging hole 6, drainage wire groove 7 and drainage cover plate 8.

Please also refer to Fig. 1 to Fig. 7, J-shaped grab 1, its one side is an open end 101, and the other side is a closed end 102, and its upper end is a hook-shaped groove 103, and the lower end is a clamping supporting surface 104, by which the hook The shaped groove 103, the closed end 102 and the clamping support surface 104 jointly constitute the J-shaped hook 1, and the hook-shaped groove 103 is in contact with the live wire when hooked. First screw holes 105 arranged vertically are provided on the clamping support surface 104 .

Please refer to FIG. 8 and FIG. 9 , a cross-sectional groove 107 is provided on the wall surface of the hook-shaped groove 103 in contact with the live wire, which can prevent the relative sliding of the live wire and the wire clip, and further improve the stability of the live wire clip.

Hook-shaped groove 103 is 4-6cm along the trending dimension of live wire, and conventional size is 1.5-2cm, and the wire-hanging groove length is conventional 2.5 times among the present invention, can increase the contact surface of the wire that will overlap like this.

The hook-shaped groove 103 includes an edge portion 1031 close to the opening end 101, the edge portion 1031 is gradually inclined outward from top to bottom, and the edge portion 1031 gradually converges from both sides to the middle, so that the edge portion 1031 forms a large top and a small bottom, And the slightly outwardly tilted structure, when hooking, as long as the lower edge of the edge portion 1031 is placed on the live line, the hook-shaped groove 103 can be easily slid into the live line to realize the hooking. Preferably, the shape of the edge portion 1031 is an inverted trapezoid or an inverted triangle, and may also be arc-shaped.

Please refer to FIG. 1 and FIG. 10 together, and tighten the bolt 3, including the top end portion 301, the screw portion 302 and the shank end portion 303, wherein the screw portion 302 fits through the first screw hole 105, and the top end portion 301 is located at J The inside of the J-shaped hook 1, while the handle end 303 is located outside the J-shaped hook 1, and the handle end 303 is mainly used to facilitate the operation and tighten the bolt 3. Through the cooperation between the screw part 302 and the first screw hole 105, the top end part 301 can be moved up and down.

Please refer to Fig. 1, and Fig. 14 to Fig. 16, the clamping head 2 is fixedly arranged on the top surface 203 of the tightening bolt 3, which moves with the tightening bolt 3, and the top surface 203 of the clamping head 2 is clamped together with the wire slot Hold a fixed line of fire. The clamping head 2 is provided with a fixing hole 201 matched with the top end portion 301 of the tightening bolt 3, the top end portion 301 of the tightening bolt 3 can be interference fit in the fixing hole 201, or an internal thread can be set in the fixing hole 201, An external thread is provided on the top end 301 of the tightening bolt 3 , and the two are connected by thread fit. In order to achieve a more secure connection between the two, a lock groove 304 can be provided on the side of the top end portion 301 of the tightening bolt 3, such as an annular lock groove 304, which is formed by a circumferential opening groove around the top end portion 301. The side of the tightening head 2 has a second screw hole 202 extending toward the locking groove 304 , and the inner end of the fixing screw 10 extends into the locking groove 304 , so that the effective combination of the clamping head 2 and the tightening bolt 3 can be realized.

Preferably, the top end surface 203 of the clamping head 2 is an arc-shaped concave surface, so as to increase the contact area with the live wire and improve the clamping reliability. A cross-section groove 107 is arranged in the arc-shaped concave surface, which can prevent the relative sliding of the live wire and the wire clip, and further improve the stability of the live wire clip.

The elastic washer 5 is sheathed on the screw part 302 of the tightening bolt 3 and is located outside the J-shaped hook 1 . For example, the elastic washer 5 may be a spring washer, or an elastic washer device in other structural forms.

The locking nut 4 is mated and connected to the screw part 302 of the tightening bolt 3 and is located outside the elastic washer 5 to fix the elastic washer 5 on the clamping support surface 104 .

After the J-shaped hook 1 is hung on the live wire, first tighten the tightening bolt 3 to move the tightening bolt 3 upwards to clamp and fix the live wire between the clamping head 2 and the J-shaped hook 1, and then turn the lock The tightening nut 4 locks the tightening bolt 3 on the clamping support surface 104 . This structure changes the live wire clip from the original one tightening point to a double bolt locking structure, so that when the wire is lapped, one point is tightened with force, and the other point is locked to prevent loosening, each forming a lock. Tighten it to effectively prevent the wire clip from being loose and causing heat due to poor contact. At the same time, since the elastic washer 5 can make the fastened tightening bolt 3 have a certain yield, it can also ensure the tightness of the tightening bolt 3 to a certain extent.

Please refer to FIG. 1 , the operation hanging hole 6 is arranged at the upper end of the back of the J-shaped hook 1 . For example, the operation hanging hole 6 is arranged on the upper back of the hook-shaped groove 103 . The operation hanging hole 6 can be integrally formed with the J-shaped hook 1 , or can be made separately and then welded on the J-shaped hook 1 . There are two main points in the operation hanging hole 6. One is to hang the wire clip and the drainage wire to the installation position by hanging the operation lever on the operation hanging hole 6 after pre-installing the drainage wire. The second is to stabilize and balance the wire clip when the wire clip is firm. , to prevent sprained running wires.

Please refer to FIG. 6 and FIG. 11 to FIG. 13 , the drainage wire groove 7 is arranged on the back of the J-shaped hook 1 . Drainage wire groove 7 is mainly used for setting up drainage wire. The drainage wire slot 7 is formed by intersecting the first wire slot and the second wire slot, and the first wire slot and the second wire slot pass through the back of the J-shaped hook 1 . Preferably, the drainage wire slot 7 is a cross structure, so as to adapt to various drainage directions of the fire wire, the wire slot diameter in the vertical direction of the drainage wire slot 7 is different from the wire slot diameter in the horizontal direction, and the wire slot diameter in the vertical direction of the drainage wire slot 7 is 35-50mm, and the diameter of the wire groove in the horizontal direction is 70-120 to adapt to different specifications of drainage wires.

Please refer to FIG. 1 to FIG. 3 , and FIG. 11 to FIG. 13 , the drainage cover 8 is detachably arranged on the back of the J-shaped hook 1 . For example, the drainage cover 8 is connected to the back of the J-shaped hook 1 by four fixing bolts 9, specifically, screw holes are provided on the drainage cover 8, and corresponding screw holes are provided on the back of the J-shaped hook 1. , the fixing bolts 9 are passed through the two screw holes to combine the drain cover 8 on the back of the J-shaped hook 1 .

Preferably, a first semicircular groove 106 is provided on the back of the J-shaped hook 1 , and a corresponding second semicircular groove 801 is provided on the drainage cover 8 . The first semicircular groove 106 and the second semicircular groove 801 jointly form the drainage wire groove 7 after being closed, so that the drainage wire can be clamped and fixed. The surfaces of the first semicircular groove 106 and the second semicircular groove 801 are provided with cross-section grooves 107, which can prevent the relative sliding between the drain wire and the drain wire groove 7, and further improve the stability of the drain wire .

When hooking up, first fix the drainage wire in the drainage wire groove 7, then use the operating rod to hang on the operation hanging hole 6 to pick the wire clamp and the drainage wire to the installation position, and make the wire hanging groove hang on the fire wire, and then rotate Tighten the bolt 3 so that the clamping head 2 and the J-shaped hook 1 jointly fix the live wire, and then fix the tightening bolt 3 by the lock nut 4 so that it cannot move in the axial direction.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (10)

1. The wire clamp 1. a kind of double bolt locked electrifications are started to exchange fire, the wire clamp of starting to exchange fire that charges include:

   J-type grab (1), one side are open end (101), and the other side is closed end (102), and the upper end is hook-shaped groove (103), under End is clamping supporting surface (104), and the clamping supporting surface (104) has the first screw hole (105)；

   Screwing bolts (3), including top end part (301) and threaded shank (302), the threaded shank (302) cooperation are threaded through described the In one screw hole (105), the top end part (301) is located at the inside of the J-type grab (1)；

   Clamping head (2) is fixed at the top end part (301) of the screwing bolts (3)；

   Elastomeric pad (5) is sheathed on the threaded shank (302) of the screwing bolts (3), and is located at the outer of the J-type grab (1) Face；

   Locking nut (4) is cooperatively connected in the threaded shank (302) of the screwing bolts (3), and is located at the elastomeric pad (5) Outside；

   Firewire clamping is fixed between the clamping head (2) and the J-type grab (1) by tightening the screwing bolts (3), The screwing bolts (3) are locked on the clamping supporting surface (104) by tightening the locking nut (4).
2. 2. double bolt lockeds charge wire clamp of starting to exchange fire according to claim 1, which is characterized in that further include:

   It operates hanging hole (6), is arranged in the back upper end of the J-type grab (1).
3. 3. double bolt lockeds charge wire clamp of starting to exchange fire according to claim 2, which is characterized in that the top of the clamping head (2) End face (203) is arc-shaped concave.
4. 4. double bolt lockeds charge wire clamp of starting to exchange fire according to claim 3, which is characterized in that the top of the clamping head (2) End face (203) is equipped with cross section thorax line (107), and the inner wall of the hook-shaped groove (103) is equipped with cross section thorax line (107).
5. 5. double bolt lockeds charge wire clamp of starting to exchange fire according to claim 2, which is characterized in that hook-shaped groove (103) edge The trend of firewire having a size of 4-6cm, the top end face (203) of the corresponding clamping head (2) along firewire trend having a size of 4- 6cm。
6. 6. double bolt lockeds charge wire clamp of starting to exchange fire according to claim 2, which is characterized in that further include:

   It drains wire casing (7), is arranged at the back of the J-type grab (1)；

   It drains cover board (8), is detachably arranged at the back side of the J-type grab (1).
7. 7. double bolt lockeds charge wire clamp of starting to exchange fire according to claim 6, which is characterized in that in the J-type grab (1) The back side is provided with the first semi-circular recesses (106), is provided with corresponding second semi-circular recesses on the drainage cover board (8) (801), first semi-circular recesses (106) collectively form described draw with second semi-circular recesses (801) after closing up Streamline slot (7).
8. 8. double bolt lockeds charge wire clamp of starting to exchange fire according to claim 6, which is characterized in that first semi-circular recesses (106) surface is equipped with cross section thorax line (107), and the surface of second semi-circular recesses (801) is equipped with cross section thorax line (107)。
9. 9. double bolt lockeds electrification according to claim 6 is started to exchange fire wire clamp, which is characterized in that the drainage wire casing (7) is Cross structure, the wire casing diameter of vertical direction and the wire casing diameter of horizontal direction are different.
10. 10. double bolt lockeds charge wire clamp of starting to exchange fire according to claim 2, which is characterized in that hook-shaped groove (103) packet It including close to the edge part (1031) of the open end (101), the edge part (1031) is from top to bottom gradually inclined outwardly setting, And the edge part (1031) is gradually restrained to middle part from two sides.