CN217290285U

CN217290285U - Chain tensioning disassembling and assembling device

Info

Publication number: CN217290285U
Application number: CN202220026977.0U
Authority: CN
Inventors: 马霄旭; 纪唯祥
Original assignee: Liaoning Wanlin Technology Co ltd
Current assignee: Liaoning Wanlin Technology Co ltd
Priority date: 2022-01-07
Filing date: 2022-01-07
Publication date: 2022-08-26
Anticipated expiration: 2032-01-07

Abstract

The utility model discloses a chain tensioning replacer, which relates to the technical field of chain disassembling tools and comprises a mounting frame, wherein a pair of supporting arms are hinged below the mounting frame, a plugging part is arranged below the pair of supporting arms, a threaded hole is arranged in the mounting frame and positioned between the pair of supporting arms, a first threaded rod is screwed in the threaded hole, the lower end of the first threaded rod is rotatably connected with a connecting arm, two ends of the connecting arm are provided with a pair of openings, a pair of sliding shafts are fixedly connected in the openings, a pair of sliding openings are arranged on the pair of supporting arms, a pair of sliding shafts are slidably connected in the pair of sliding openings, a disassembling groove is arranged above the mounting frame, the device can enable the pair of supporting arms to swing by sleeving a ratchet wrench on a hexagonal head of the first threaded rod and rotating, thereby tensioning two chains to be butted, the difficult problem of the tensioning force of chain leads to being difficult to realize the butt joint has been solved.

Description

Chain tensioning disassembling and assembling device

Technical Field

The utility model relates to a chain assembly and disassembly tools technical field specifically is the taut replacer of chain.

Background

Chain drives are widely used in various transmission devices, such as motorcycles, bicycles, etc., in which power transmission is performed by a chain. In the process of disassembling and assembling the traditional chain, a punch is generally adopted to align to a pin shaft on the chain, the pin shaft is forcibly knocked by a hammer to be disassembled or assembled, the chain sheet is easily damaged or an operator is injured, and therefore the quality and the safety of disassembling and assembling the chain are improved by means of a tool. In the utility model patent of publication number CN204546419U, a chain replacer is disclosed, including the dismouting seat, compress tightly the cover, the dismouting screw rod, dismouting thimble and dismouting system, the dismouting seat includes upper and lower fixing base, be equipped with on the upper fixing base and compress tightly the screw, be equipped with round pin axle hole on the fixing base down, the aperture in round pin axle hole is greater than round pin axle diameter, compress tightly the cover and be connected with compressing tightly the screw, be equipped with the dismouting screw in it, two centre-to-centre separations that compress tightly the cover equal to the centre-to-centre spacing of two round pin axles, dismouting screw rod and dismouting screw threaded connection, the dismouting thimble is connected with dismouting screw rod lower extreme, dismouting thimble diameter is less than the diameter of chain round pin axle, length is greater than the length of chain round pin axle, round pin axle hole, the dismouting thimble is coaxial with compressing tightly the screw. Compared with the prior art, this utility model discloses a chain replacer can compress tightly the cover and pinpoint the chain link after, and two dismouting screw rods of dismouting system drive rotate, carry out synchronous dismouting to two round pin axles of chain link, consequently, the dismouting process can not produce unbalanced force and the warping problem of link joint because of the link joint both ends atress is uneven, however, the device is not convenient for connect the chain under the state of straining, consequently, unsatisfied current demand.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a taut replacer of chain has solved the technical problem that current device is not convenient for carry out the connection to the chain under the taut state.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: taut replacer of chain, including the mounting bracket, the mounting bracket below articulates there is a pair of support arm, and is a pair of the support arm below is equipped with grafting portion, just be located a pair of in the mounting bracket set up threaded hole between the support arm, threaded hole has connect first threaded rod soon, first threaded rod lower extreme rotates and is connected with the linking arm, a pair of opening has been seted up at the linking arm both ends, and is a pair of rigid coupling has a pair of slide-shaft in the opening, and is a pair of sliding opening has been seted up on the support arm, and is a pair of slide-shaft sliding connection in a pair of in the sliding opening, the dismantlement groove has been seted up to the mounting bracket top, just be located on the mounting bracket dismantle groove one side and install chain dismounting device.

Preferably, the chain dismounting device includes the rigid coupling in just be located on the mounting bracket dismantle the installation pipe of groove one side, the installation pipe with dismantle the groove and communicate mutually, the intraductal internal thread groove that has seted up of installation, pass through in the installation pipe the internal thread groove has connect the second threaded rod soon, second threaded rod one end rigid coupling has the ejector pin.

Preferably, a through hole is formed in one side wall of the dismounting groove.

Preferably, a pair of positioning columns is fixedly connected to the bottom of the detaching slot.

Preferably, each pair of the positioning columns is of a conical structure.

Preferably, hexagonal heads are fixedly connected to one ends of the first threaded rod and the second threaded rod.

Preferably, the pair of support arms and the inner side of the insertion part are both provided with notches.

Advantageous effects

The utility model provides a taut replacer of chain, it can make a pair of support arm swing to rotate through the hexagonal head of ratchet spanner suit at first threaded rod, thereby can be taut with the chain of two needs docks, the difficult problem that leads to being difficult to realize the butt joint because of the straining force of chain has been solved, insert the position that will dismantle when needing to dismantle the chain and dismantle the inslot, and suit chain space department on the reference column, spacing through the reference column can make the connecting axle and the ejector pin of chain align, it is more convenient to make the installation, promote the ejector pin through the second threaded rod, can be ejecting the chain connecting axle to the through-hole in through the ejector pin, accomplish disassembling of chain.

Drawings

Fig. 1 is a perspective view of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a top view of the present invention.

In the figure: 1. a mounting frame; 2. a support arm; 3. a plug-in part; 4. a recess; 5. a threaded hole; 6. a first threaded rod; 7. a connecting arm; 8. an opening; 9. a slide shaft; 10. a sliding port; 11. disassembling the groove; 12. installing a pipe; 13. an internal thread groove; 14. a second threaded rod; 15. a top rod; 16. a through hole; 17. a positioning column; 18. a hexagonal head; 19. a ratchet wrench.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the chain tensioning replacer comprises an installation frame 1, a pair of support arms 2 is hinged to the lower portion of the installation frame 1, an inserting portion 3 is arranged below the pair of support arms 2, a threaded hole 5 is formed in the installation frame 1 and located between the pair of support arms 2, a first threaded rod 6 is screwed in the threaded hole 5, the lower end of the first threaded rod 6 is rotatably connected with a connecting arm 7, a pair of openings 8 are formed in two ends of the connecting arm 7, a pair of sliding shafts 9 are fixedly connected in the pair of openings 8, a pair of sliding openings 10 are formed in the pair of support arms 2, the pair of sliding shafts 9 are slidably connected in the pair of sliding openings 10, a dismounting groove 11 is formed in the upper portion of the installation frame 1, and a chain dismounting device is installed on one side, located on the dismounting groove 11, of the installation frame 1; the chain dismounting device comprises a mounting pipe 12 fixedly connected to the mounting frame 1 and located on one side of the dismounting groove 11, the mounting pipe 12 is communicated with the dismounting groove 11, an inner thread groove 13 is formed in the mounting pipe 12, a second threaded rod 14 is screwed in the mounting pipe 12 through the inner thread groove 13, and an ejector rod 15 is fixedly connected to one end of the second threaded rod 14; a through hole 16 is formed in one side wall of the dismounting groove 11; a pair of positioning columns 17 are fixedly connected to the bottom of the dismounting groove 11; the pair of positioning columns 17 are both conical structures; one ends of the first threaded rod 6 and the second threaded rod 14 are fixedly connected with hexagonal heads 18; a pair of support arms 2 and be located the inboard notch 4 that has all been seted up of grafting portion 3.

Example (b): as can be seen from the attached drawings 1-3 of the specification, when in use, the insertion part 3 below the pair of supporting arms 2 is inserted into the gap of the chain, the falling off of the chain during tensioning can be prevented through the notch 4, the connecting arm 7 can be moved up and down through sleeving the ratchet wrench 19 on the hexagonal head 18 of the first threaded rod 6 and rotating, the pair of supporting arms 2 can be swung through sliding the sliding shafts 9 at the two ends of the connecting arm 7 in the sliding openings 10, so that two chains to be butted can be tensioned, the difficult problem of butt joint caused by the tensioning force of the chains is solved, when the chains to be disassembled are inserted into the disassembling grooves 11, the gap of the chains is sleeved on the positioning columns 17, the connecting shafts of the chains can be aligned with the mandrils 15 through the limiting of the positioning columns 17, the ratchet wrench 19 rotates the second threaded rod 14, the mandrils 15 are pushed through the second threaded rods 14, the chain connecting shaft can be ejected out of the through hole 16 through the ejector rod 15, and the chain is disassembled.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The chain tensioning disassembling and assembling device comprises an installation frame (1) and is characterized in that a pair of supporting arms (2) is hinged below the installation frame (1), an inserting part (3) is arranged below the pair of supporting arms (2), a threaded hole (5) is arranged in the mounting rack (1) and between the pair of supporting arms (2), a first threaded rod (6) is screwed in the threaded hole (5), the lower end of the first threaded rod (6) is rotatably connected with a connecting arm (7), a pair of openings (8) are formed at two ends of the connecting arm (7), a pair of sliding shafts (9) are fixedly connected in the pair of openings (8), a pair of sliding openings (10) are formed in the pair of supporting arms (2), the pair of sliding shafts (9) are slidably connected in the pair of sliding openings (10), the chain dismounting device is characterized in that a dismounting groove (11) is formed in the upper portion of the mounting rack (1), and the mounting rack (1) is provided with the chain dismounting device which is located on one side of the dismounting groove (11).

2. The taut replacer of chain according to claim 1, characterized in that the chain disassembling means comprise a mounting tube (12) fixedly attached to the mounting frame (1) on one side of the disassembling groove (11), the mounting tube (12) communicating with the disassembling groove (11), an internal thread groove (13) being formed in the mounting tube (12), a second threaded rod (14) being screwed into the mounting tube (12) through the internal thread groove (13), and an ejector rod (15) being fixedly attached to one end of the second threaded rod (14).

3. The taut replacer of chain according to claim 2, characterized in that a side wall of the removal groove (11) is perforated with a through hole (16).

4. The chain-tensioning replacer of claim 2, wherein a pair of positioning posts (17) are affixed to the bottom of the removal groove (11).

5. The chain tensioning replacer according to claim 4, characterized in that the pair of positioning posts (17) are each of conical configuration.

6. The chain-tensioning replacer according to claim 2, characterized in that the first threaded rod (6) and the second threaded rod (14) are each fixed at one end with a hexagonal head (18).

7. The chain tensioning replacer according to claim 1, characterized in that a pair of the support arms (2) are notched (4) inside the plug part (3).