阅读说明：本技术 一种双头链扳 (Double-end chain plate ) 是由 邓昭辉 田康 吴英帅 陈家辉 杜彬 杨大策 简兴菊 牟景艳 杨艳 宋先琴 丁宇洁 于 2020-05-25 设计创作，主要内容包括：本发明公开了一种双头链扳,包括链条,两条一端固定连接有方头,另一端固定连接有内方孔的套筒,方头能够与组合套筒、一字螺丝刀或十字螺丝刀配合使用,套筒能够与扭力扳手头或棘轮扳手头配合使用。本发明利用链条的柔性,将链条作为柔性手柄,配合各类扳手结构(组合套筒、一字螺丝刀或十字螺丝刀、短手柄的开口死扳手、活扳手或棘轮扳手),可轻松套狭窄空间处的螺栓头或螺母,实现螺栓或螺母的拆卸。(The invention discloses a double-end chain plate which comprises a chain, wherein one ends of two sleeves are fixedly connected with square heads, the other ends of the two sleeves are fixedly connected with an inner square hole, the square heads can be matched with a combined sleeve, a straight screwdriver or a cross screwdriver for use, and the sleeves can be matched with a torque wrench head or a ratchet wrench head for use. According to the invention, the chain is used as a flexible handle by utilizing the flexibility of the chain, and the bolt head or the nut in a narrow space can be easily sleeved by matching various wrench structures (a combined sleeve, a straight screwdriver or a cross screwdriver, an open-ended dead wrench with a short handle, an adjustable wrench or a ratchet wrench) so as to realize the disassembly of the bolt or the nut.)

1. A double-end chain plate is characterized in that: the novel ratchet wrench comprises a chain (1), two square heads (2) fixedly connected with one ends, and a sleeve (3) with an inner square hole fixedly connected with the other end, wherein the square heads (2) can be matched with a combined sleeve, a straight screwdriver or a cross screwdriver, and the sleeve (3) can be matched with a torque wrench head or a ratchet wrench head.

2. The double-ended sprocket as recited in claim 1, wherein: an elastic limit telescopic pin (4) is arranged on the square head (2).

3. The double-ended sprocket as recited in claim 1, wherein: the sleeve (3) is provided with a limiting hole (5), and the limiting hole (5) can be inserted into an elastic telescopic pin on a connecting rod of the torque wrench head or the ratchet wrench head.

4. A double-ended sprocket as defined in claim 2, wherein: the elastic limiting telescopic pin (4) comprises a limiting pin (6) and a compression spring (7) of a ball head, the limiting pin (6) is inserted into a blind hole in the side face of the square head (2), the inner end of the limiting pin is fixedly connected with one end of the compression spring (7), and the other end of the compression spring (7) is fixedly connected to the bottom of the blind hole.

5. The double-ended sprocket as recited in claim 1, wherein: the torsion wrench head comprises a dead wrench head and a movable wrench head, the connecting rod of the torsion wrench head is a short square rod, and the short square rod is inserted into the sleeve.

6. The double-ended sprocket as recited in claim 1, wherein: the rotation direction of the ratchet wrench is vertical to the winding direction of the chain (1).

7. The double-ended sprocket as recited in claim 1, wherein: the chain (4) adopts a segmented detachable structure, and hinged shafts at the segmented sections are connected by hinged bolts.

8. The double-ended sprocket as recited in claim 1, wherein: the chain links of the chain (4) are combined by 3 multiplied by 4 chain plates.

Technical Field

The invention relates to a double-end chain plate, and belongs to the technical field of wrenches.

Background

In the process of carrying out transportation, transformation, power distribution overhaul and maintenance and installation operation, the most common is various wrenches, such as an adjustable wrench, a box wrench, an open-end wrench and a socket wrench, aiming at the problem that the space in equipment is too narrow, and the conventional combination tool (combination sleeve), the open-end wrench, the box wrench and the adjustable wrench cannot carry out bolt dismounting operation, so that the work delay is caused, in the transportation, transformation, power distribution overhaul and installation process, especially for high-altitude operation, the fewer tools to be carried are required to be better, and for example, Chinese patent application (application number 201621025575X) discloses a portable device for locking an unloading connecting pipe, which specifically comprises a T-shaped socket wrench, a screw rod, a chain plate and a chuck; one end of the T-shaped sleeve wrench is a T-shaped wrench, the other end of the T-shaped sleeve wrench is a nut, the screw rod and the chain plate are both provided with pin holes, and the chuck is provided with a U-shaped clamping groove; the T-shaped socket wrench is connected with the screw rod through threads, two ends of the chain are respectively connected with the screw rod and the chain plate through a pin shaft and a cotter pin, the chain plate is welded with the clamping head, and the clamping head is clamped at the end part of a nut of the T-shaped socket wrench through a clamping groove. The device quickly locks the unloading connecting pipe of the coal tar transport vehicle, is simple and convenient to operate, and reduces the labor intensity of operators; no iron wire is consumed, the operation cost is saved, the loss of the snakeskin tube is reduced, and the service life of the snakeskin tube is prolonged; the problem that tar leaks and pollutes the environment or operating personnel scald accidents caused by infirm binding of the interfaces of the snakeskin tubes for unloading or broken iron wires is avoided, and the device only realizes the locking connection of the snakeskin tubes and does not disassemble bolts in narrow spaces.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: a double-ended chain plate is provided to solve the above problems in the prior art.

The technical scheme adopted by the invention is as follows: the double-end chain wrench comprises a chain, wherein one end of each of the two sleeves is fixedly connected with a square head, the other end of each of the two sleeves is fixedly connected with an inner square hole, the square heads can be matched with a combined sleeve, a straight screwdriver or a cross screwdriver, and the sleeves can be matched with a torque wrench head or a ratchet wrench head.

Preferably, the square head is provided with an elastic limit telescopic pin.

Preferably, the sleeve is provided with a limiting hole, and the limiting hole can be inserted into an elastic telescopic pin on a connecting rod of the torque wrench head or the ratchet wrench head.

Preferably, the elastic limit telescopic pin comprises a limit pin and a compression spring of a ball head, the limit pin is inserted into the blind hole in the side face of the square head, the inner end of the limit pin is fixedly connected with one end of the compression spring, and the other end of the compression spring is fixedly connected to the bottom of the blind hole.

Preferably, the torque wrench head comprises a dead wrench head and a movable wrench head, the connecting rod of the torque wrench head is a short square rod, and the short square rod is inserted into the sleeve.

Preferably, the rotation direction of the ratchet wrench is perpendicular to the direction in which the chain can be wound.

Preferably, the chain adopts a segmented detachable structure, and the hinge shafts at the segmented sections are connected by hinge bolts.

Preferably, the chain links are a 3 × 4 chain plate combination.

The invention has the beneficial effects that: compared with the prior art, the invention utilizes the flexibility of the chain, takes the chain as the flexible handle, and is matched with various wrench structures (a combined sleeve, a straight screwdriver or a cross screwdriver, an open-ended dead wrench with a short handle, a monkey wrench or a ratchet wrench), so that the bolt head or the nut in a narrow space can be easily sleeved, and the disassembly of the bolt or the nut is realized.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a 3X 4 chain plate assembly structure of the chain;

fig. 3 is a schematic structural view of the connection position of the elastic limit telescopic pin.

Detailed Description

The invention is further described with reference to the accompanying drawings and specific embodiments.