Simple chain connector

Abstract

The utility model relates to the technical field of chain maintenance tools, and provides a simple chain connector which comprises an arc-shaped left linking arm, an arc-shaped right linking arm, an arc-shaped left fastening piece and an arc-shaped right fastening piece, and the first end of the left linking arm is hinged to the first end of the right linking arm; a left clamping jaw is arranged at the second end of the left linking arm, a right clamping jaw is arranged at the second end of the right linking arm, threaded holes are formed in the left linking arm and the right linking arm, the left fastening piece and the right fastening piece penetrate through the threaded holes respectively and are connected with each other in a hanging mode, a spring is fixedly connected between the left linking arm and the right linking arm, and the left fastening piece and the right fastening piece are connected with the left linking arm and the right linking arm respectively. The left fastening piece and the right fastening piece are arranged in the spring in a penetrating mode. According to the chain connector, the structure of an existing chain connector is simplified, and the use convenience and practicability of the chain connector are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of chain repair tools, specifically to a simple chain connector. Background Technology

[0002] Chains are common connecting tools in industrial equipment or mechanical products. They consist of inner and outer links. During use, when wear or excessive local stress exceeds the link's bearing capacity, certain structures within the link may break, such as a broken shaft or chain plate in an outer link. Once a chain breaks at a certain location, a new chain structure needs to be replaced. During replacement, the entire chain needs to be fitted onto the link's mechanism, and the two broken ends need to be pulled closer together and fastened to achieve repair.

[0003] Existing chain replacement methods typically rely on manual tightening of the chain for assembly, or the use of a chain connector to bring the two ends of the chain closer together for matching, followed by manual installation of the replacement component. For example, Chinese Patent CN206036156U discloses a multi-functional chain connector, which includes a mounting frame, a U-shaped handle, and chain-connecting claws. Inner claws are fixedly mounted on the front and rear sides of the mounting frame, and a connecting frame is hinged to the outer sides of the two inner claws. Outer claws, capable of engaging with the corresponding inner claws to grip the chain, are integrally fixed to the front left and rear left ends of the connecting frame. With chain-connecting claws, inner claws, and outer claws, and three grippers connected to both ends of the chain, the overall structure is complex, with numerous operational steps, affecting the efficiency of chain connection. Therefore, this application provides a simplified chain connector. Summary of the Invention

[0004] This utility model proposes a simple chain connector to solve the technical problems of existing chain connectors being complex in structure and inconvenient to use in the aforementioned background art.

[0005] The technical solution of this utility model is as follows:

[0006] A simple chain connector includes an arc-shaped left connecting arm, a right connecting arm, a left fastener, and a right fastener. The first ends of the left connecting arm and the right connecting arm are hinged to each other. The second end of the left connecting arm is provided with a left pawl, and the second end of the right connecting arm is provided with a right pawl. The left and right connecting arms are provided with threaded holes. The left and right fasteners pass through the threaded holes and are hooked together. A spring is fixedly connected between the left and right connecting arms, and the left and right fasteners are both inserted into the spring.

[0007] Optionally, the left fastener and the right fastener comprise a threaded connecting rod, a hook arranged at one end of the connecting rod, and a locking nut screwed with the connecting rod, the connecting rod is partially inserted into the interior of the spring, and the two hooks are hung with each other; the locking nut is used to abut against the side wall of the left link arm or the right link arm after being screwed with the connecting rod.

[0008] Optionally, the hinged sections of the left link arm and the right link arm are a U-shaped hole and a U-shaped wedge respectively, and the U-shaped hole and the U-shaped wedge both comprise a positioning hole, and a connecting pin is connected with the positioning hole in a clearance fit.

[0009] Optionally, the left clamping jaw and the right clamping jaw both comprise an anti-unhooking hook arranged to abut against a roller or a transition pin in the chain.

[0010] Optionally, the anti-unhooking hook comprises anti-unhooking blocks arranged in steps.

[0011] Optionally, one end of the connecting rod opposite to the hook is provided with a handle in the shape of a Chinese character or a cross.

[0012] The principle and beneficial effects of the utility model are as follows:

[0013] The simple chain connector provided by the utility model is provided with a spring between two link arms hinged at one end, a clamping jaw is arranged at the other end of the link arm, and is used to be inserted on a complete chain link near a chain break position, then the left fastener and the right fastener on the left and right link arms are tightened to shorten the distance between the two clamping jaws, and then the two ends of the chain are close to each other, after the staff further replaces the part to be replaced in the chain, the tightening force of the left fastener and / or the right fastener is released, and the left clamping jaw and the right clamping jaw are taken out of the chain. BRIEF DESCRIPTION OF DRAWINGS

[0014] The utility model will be further described in detail in combination with the drawings and specific embodiments.

[0015] Figure 1 The three-dimensional structure schematic view of the simple chain connector provided by the utility model is shown in the figure.

[0016] Figure 2 The three-dimensional structure schematic view of the anti-unhooking hook in the embodiment of the utility model is shown in the figure.

[0017] In the figure: 1, left link arm; 2, right link arm; 3, left fastener; 4, right fastener; 41, connecting rod; 43, locking nut; 5, left clamping jaw; 6, right clamping jaw; 7, spring; 8, anti-unhooking hook; 81, anti-unhooking block. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be apparently and completely described below in combination with the embodiments of the utility model. Apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor are involved in the protection scope of the utility model.

[0019] Chain is a common connecting tool in industrial equipment or mechanical products, which includes inner link and outer link. When the chain is worn or the local stress is too large to exceed the bearing range of the link, some structures in the link will be broken, such as the shaft of the outer link or the chain plate. Once the chain at a position is broken, a new chain structure needs to be replaced. When replacing, the entire chain needs to be sleeved on the mechanism of the link, and then the two broken ends are pulled close and buckled, so as to finally realize maintenance. The overall structure of the existing chain connector is complex, and the operation process is more, which affects the efficiency of chain connection. Therefore, the application provides a simple chain connector to simplify the structure of the existing chain connector, so as to improve the convenience and practicality of the chain connector.

[0020] Below, the application will be described in detail in combination with the accompanying drawings. Figure 1 and the accompanying drawings. Figure 2 The utility model is described in detail, wherein the dashed box in the accompanying drawings represents the setting position of the spring 7. Figure 1

[0021] The utility model provides a simple chain connector, including arc left link arm 1, right link arm 2, left fastener 3, right fastener 4, the first end of left link arm 1 and right link arm 2 are hinged with each other, the second end of left link arm 1 is equipped with left jaw 5, the second end of right link arm 2 is equipped with right jaw 6, and the left link arm 1 and right link arm 2 are equipped with threaded hole, left fastener 3, right fastener 4 respectively pass through threaded hole and are hung with each other, left link arm 1 and right link arm 2 are fixedly connected with spring 7, and left fastener 3 and right fastener 4 are all arranged in spring 7.

[0022] As described above, referring to the accompanying drawings Figure 1 ​The simple chain connector provided by the utility model is simple in structure, convenient to operate, improves the convenience of chain connection, and improves the practicality of the chain connector.

[0023] In addition, the hinge sections of the left link arm 1 and the right link arm 2 are respectively U-shaped holes and U-shaped wedges, the U-shaped holes and the U-shaped wedges all include positioning holes, and the connecting pin is connected with the positioning holes in a clearance fit. Figure 1 As shown in the figure, the hinge section of the left connecting arm (the hinge section is Figure 1 The part of the left connecting arm other than the hinge section and the area where the left fastener 3 or the right fastener 4 is installed is a U-shaped hole structure, and the hinge section of the right link arm 2 is a U-shaped wedge, so that the U-shaped wedge of the right link arm 2 can be sleeved in the U-shaped hole of the left link arm 1, after the two structures are overlapped, the positioning holes are overlapped with each other, and then the connecting pin is inserted into the positioning holes, so that the left connecting arm and the right link arm 2 are hingedly connected. The U-shaped hole structure is convenient for adjusting the size of mutual sleeving, and is used for increasing the flexibility of use.

[0024] With reference to the accompanying drawings Figure 1 The use method of the chain connector provided by the utility model is as follows:

[0025] When the chain is connected, first, the open chain is sleeved on the connecting mechanism (for example, a gear or other similar mechanism that needs to be connected by a chain for transmission); then, the tightening force of the left fastener 3 or the right fastener 4 of the chain connector is released, the left claw 5 is clamped in the complete chain link near one end of the chain, and the right claw 6 is clamped in the complete chain link near the other end of the chain; then, the tightening force of the left fastener 3 or the right fastener 4 is applied again, so that the two ends of the chain can be close to each other, and the operator can conveniently install the replaced part on the chain, finally, the chain link is locked, after the replacement is completed, the tightened left fastener 3 or right fastener 4 is released, and the left claw 5 and the right claw 6 of the chain connector are taken out of the chain.

[0026] In some embodiments, the aforementioned left fastener 3 and the right fastener 4 comprise: a threaded connecting rod 41, hooks arranged at one end of the connecting rod 41, and a locking nut 43 screwed with the connecting rod 41, the connecting rod 41 is partially inserted into the spring 7, and the two hooks are hung with each other; the locking nut 43 is used for screwing with the connecting rod 41 and abutting against the side wall of the left link arm 1 or the right link arm 2. In this embodiment, the distance between the left clamping jaw 5 and the right clamping jaw 6 is controlled by the locking nut 43, and the left and right connecting rods 41 are connected together by the two hooks, so that the two connecting rods 41 have flexible tensile stress. Of course, if the connection between the connecting rod 41 and the link arm is relatively stable, one end of the connecting rod 41 in the left fastener 3 and the right fastener 4 can also not be connected by the hook, and the specific selection can be made according to the actual situation.

[0027] In some embodiments, the left clamping jaw 5 and the right clamping jaw 6 each comprise an anti-unhooking hook 8 arranged to abut against the roller or transition pin in the chain. The anti-unhooking hook 8 comprises a stepped anti-unhooking block 81. As shown in Figure 2 The stepped anti-unhooking block 81 can not only prevent the clamping jaw from slipping relative to the roller or transition pin in the chain, but also increase the compatibility with different specifications and sizes of rollers / transition pins.

[0028] In other embodiments, one end of the connecting rod 41 opposite to the hook is provided with a horizontal or cross-shaped handle. The horizontal or cross-shaped handle facilitates the application of tightening force to the connecting rod 41, that is, the position of the locking nut 43 is fixed, and the distance between the left clamping jaw 5 and the right clamping jaw 6 is adjusted by tightening the connecting rod 41.

[0029] In summary, the chain connector provided by the utility model has simple structure, convenient operation, greatly improves the convenience and practicality of the chain connector, and one operator can flexibly complete the chain connecting action, thereby shortening the chain connecting and repairing time, saving the repair labor, improving the equipment maintenance work efficiency, reducing the labor intensity and safety hazards of workers. Finally, the utility model provides a simple chain connector, which comprises an arc-shaped left link arm 1, an arc-shaped right link arm 2, a left fastener 3 and a right fastener 4. The first ends of the left link arm 1 and the right link arm 2 are hingedly connected with each other. The second end of the left link arm 1 is provided with a left clamping jaw 5, and the second end of the right link arm 2 is provided with a right clamping jaw 6. Threaded holes are arranged on the left link arm 1 and the right link arm 2. The left fastener 3 and the right fastener 4 pass through the threaded holes and are hung with each other. A spring 7 is fixedly connected between the left link arm 1 and the right link arm 2. The left fastener 3 and the right fastener 4 are arranged in the spring 7. The utility model simplifies the structure of the existing chain connector and improves the convenience and practicality of the chain connector.

[0030] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A simple chain connector, characterized by, The left connecting arm (1) and the right connecting arm (2) are hingedly connected at the first ends thereof; the second end of the left connecting arm (1) is provided with a left clamping jaw (5), and the second end of the right connecting arm (2) is provided with a right clamping jaw (6); the left connecting arm (1) and the right connecting arm (2) are provided with threaded holes, and the left fastener (3) and the right fastener (4) are respectively threaded through the threaded holes and hingedly connected with each other; the left connecting arm (1) and the right connecting arm (2) are fixedly connected with a spring (7), and the left fastener (3) and the right fastener (4) are both arranged in the spring (7).

2. A simple chain coupler according to claim 1, characterized in that The left fastener (3) and the right fastener (4) comprise a connecting rod (41) with threads, hooks arranged at one end of the connecting rod (41), and a locking nut (43) screwed with the connecting rod (41); the connecting rod (41) is partially arranged in the interior of the spring (7), and the two hooks are hingedly connected with each other; the locking nut (43) is abutted against the side wall of the left connecting arm (1) or the right connecting arm (2) after being screwed with the connecting rod (41).

3. A simple chain coupler according to claim 2, characterized in that The hinged sections of the left connecting arm (1) and the right connecting arm (2) are respectively a U-shaped hole and a U-shaped wedge, and the U-shaped hole and the U-shaped wedge both comprise a positioning hole, and a connecting pin is gap-connected with the positioning hole.

4. A simple chain coupler according to claim 3, characterized in that The left clamping jaw (5) and the right clamping jaw (6) both comprise an anti-unhooking hook (8) arranged to be abutted against a roller or a transition pin in a chain.

5. A simple chain coupler according to claim 4, characterized in that The anti-unhooking hook (8) comprises anti-unhooking blocks (81) arranged in steps.

6. A simple chain connector according to claim 3, characterized in that The connecting rod (41) is provided with a one-word-shaped or cross-shaped handle at the end opposite to the hook.

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