CN217620294U

CN217620294U - Multifunctional chain wrench

Info

Publication number: CN217620294U
Application number: CN202221207963.5U
Authority: CN
Inventors: 朱钰忠; 刘伟; 钱永强
Original assignee: Jiangsu Changyou Environmental Protection Technology Co ltd
Current assignee: Jiangsu Changyou Environmental Protection Technology Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-10-21
Anticipated expiration: 2032-05-18

Abstract

The utility model discloses a multi-functional chain spanner relates to spanner technical field, including screw rod, first nut and chain, the screw rod includes screw thread portion and screw rod handle, the chain includes outer link joint, inner link joint and round pin axle, the chain both ends are equipped with the end link joint, the end link joint other end is equipped with the face of weld, the face of weld welds in the outer wall middle part with first nut outer wall crest line parallel, the screw rod handle outside is equipped with iron screw rod cover. This kind of chain spanner structure is simpler, and the chain is bigger with fastening workpiece's area of contact, and frictional force is also bigger, and has increased the tensile strength and the life of chain, and the screw rod cover can increase the arm of force to it is more laborsaving to use.

Description

Multifunctional chain wrench

Technical Field

The utility model relates to a spanner technical field, especially chain spanner.

Background

The chain wrench generally comprises a chain, a handle and a tightening part, wherein the workpiece is clamped and rotated by friction force generated by a contact surface between a chain plate of the chain and the workpiece, and the magnitude of the friction force and the length of the handle determine the magnitude of torque applied to the workpiece by the wrench.

There have been a variety of chain wrenches today, but the chain that adopts traditional structure usually contains parts such as round pin axle sleeve, roller, and the structure is complicated relatively, and the cost is also higher, and the area of contact between link joint and the work piece is less, leads to frictional force not enough easily, and handle length is fixed, can cause certain inconvenience during the use.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, the utility model provides a following technical scheme:

the utility model provides a multifunctional chain wrench, includes screw rod, first nut and chain, the screw rod includes screw thread portion and screw rod handle, the chain includes outer link joint, inner plate and round pin axle, outer link joint and inner plate are crisscross the polyphone in proper order at selling epaxially, every outer link joint of selling epaxial polyphone is two, the inner plate is three, outer link joint and round pin axle interference fit, the inner plate rotates with the round pin axle to be connected, the chain both ends are equipped with the end link joint, the end link joint is located between outer link joint and the inner plate, end link joint one end is rotated with the round pin axle and is connected, the other end is equipped with the face of weld, the face of weld is in the outer wall middle part with first nut outer wall crest line parallel weld, first nut and screw thread portion threaded connection.

Further, a second nut is further arranged between the screw handle and the first nut and is in threaded connection with the threaded portion.

Further, a spring washer is arranged between the first nut and the second nut and is in sliding connection with the threaded portion.

Further, an annular groove is arranged between the threaded part and the screw shank.

Furthermore, two semicircular annular magnets are further arranged between the threaded portion and the screw rod handle, and the two semicircular annular magnets are mutually adsorbed to form a ring to be embedded in the groove.

Furthermore, an iron screw sleeve handle is arranged outside the screw handle, and rubber paint is arranged on the surface of the screw sleeve handle.

Further, the outer chain plate and the inner chain plate are equal in size.

Further, the number of the pin shafts is 14.

Compared with the prior art, the beneficial effects of the utility model are that: the chain wrench saves a pin shaft sleeve and a roller component, has simpler structure, larger contact area between the chain and a fastening workpiece, larger friction force, increased tensile strength and service life of the chain, and can increase the force arm by the screw sleeve, thereby being more labor-saving.

Drawings

Fig. 1 is the whole schematic view of the chain wrench of the present invention.

Fig. 2 is a schematic view of the chain structure of the present invention.

Fig. 3 is a schematic view of the magnet structure of the present invention.

In FIGS. 1-3: 10. a chain; 11. an outer link plate; 12. an inner link plate; 13. a pin shaft; 14. end chain plates; 15. welding a surface; 21. a threaded portion; 22. a screw shank; 23. a screw rod sleeve handle; 24. a groove; 25. a magnet; 31. a first nut; 32. a second nut; 33. a spring washer.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention.

As shown in fig. 1-2, a multi-functional chain spanner, includes screw rod, first nut 31 and chain 10, the screw rod includes screw thread portion 21 and screw rod handle 22, chain 10 includes outer link joint 11, inner link joint 12 and round pin axle 13, outer link joint 11 and inner link joint 12 crisscross the polyphone in proper order on round pin axle 13, the outer link joint 11 that polyphone is two on every round pin axle 13, inner link joint 12 is three, outer link joint 11 and round pin axle 13 interference fit, inner link joint 12 rotates with round pin axle 13 to be connected, chain 10 both ends are equipped with end link joint 14, end link joint 14 is located between outer link joint 11 and the inner link joint 12, end link joint 14 one end rotates with round pin axle 13 to be connected, the other end is equipped with weld face 15, weld face 15 and the parallel welding of first nut 31 outer wall crest line in the middle part of the wall, first nut 31 and screw thread portion 21 threaded connection. The chain wrench omits a pin shaft sleeve and a roller component, has a simpler structure, and increases the tensile strength and the service life of the chain as every two outer chain plates and three inner chain plates are alternately arranged.

As shown in fig. 1, a second nut 32 is further disposed between the screw shank 22 and the first nut 31, and the second nut 32 is screwed to the threaded portion 21. When the chain winds the workpiece, the workpiece is locked by rotating the screw rod, and then the second nut 32 is rotated to tightly prop against the first nut 31, so that the screw rod and the first nut 31 can be prevented from rotating relatively in the process of screwing the workpiece, and the chain is prevented from loosening.

As shown in fig. 1, a spring washer 33 is further disposed between the first nut 31 and the second nut 32, and the spring washer 33 is slidably connected to the threaded portion 21. The spring washer can increase the resistance between the first nut 31 and the second nut 32 while preventing the two nuts from locking.

As shown in fig. 1, an annular groove 24 is provided between the threaded portion 21 and the screw shank 22. The recess is used for installing ring magnet, prevents magnet displacement.

As shown in fig. 1 and 3, two semicircular annular magnets 25 are further disposed between the screw portion 21 and the screw stem 22, and the two semicircular annular magnets 25 are mutually attracted to form a circular ring to be embedded in the groove 24. The ring magnet can adsorb the screw sleeve handle 23, and the sleeve handle is prevented from being lost when the wrench is idle.

As shown in FIG. 1, an iron screw handle 23 is arranged outside the screw handle 22, and rubber paint is arranged on the surface of the screw handle 23. The arm of force can be increased by pulling out the screw sleeve handle 23 when the workpiece is twisted, so that more labor is saved; the rubber paint is arranged, so that not only can the sleeve handle be prevented from rusting, but also the hand can be prevented from slipping during working.

As shown in fig. 2, the outer link plate 11 and the inner link plate 12 are equal in size. So set up, the equal accessible fastening work piece of interior outer link joint makes area of contact increase, and frictional force is also bigger.

As shown in fig. 2, the number of the pins 13 is 14. This arrangement can be adapted to different sizes of fastening workpieces.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a multi-functional chain spanner, includes screw rod, first nut (31) and chain (10), the screw rod includes screw thread portion (21) and screw rod handle (22), chain (10) include outer link joint (11), inner link joint (12) and round pin axle (13), outer link joint (11) and inner link joint (12) crisscross polyphone in proper order on round pin axle (13), a serial communication port, its characterized in that, outer link joint (11) of polyphone are two on every round pin axle (13), inner link joint (12) are three, outer link joint (11) and round pin axle (13) interference fit, inner link joint (12) rotate with round pin axle (13) and are connected, chain (10) both ends are equipped with end link joint (14), end link joint (14) are located between outer link joint (11) and inner link joint (12), end link joint (14) one end is rotated with round pin axle (13) and is connected, the other end is equipped with weld face (15), weld face (15) and first nut (31) outer wall parallel weld in the middle part of edge line, first nut (31) and screw thread portion (21) are connected.

2. A multi-functional chain wrench as claimed in claim 1, in which a second nut (32) is provided between the shank (22) and the first nut (31), the second nut (32) being threadedly engaged with the threaded portion (21).

3. A multi-function chain wrench as claimed in claim 2, wherein a spring washer (33) is provided between the first nut (31) and the second nut (32), the spring washer (33) being slidably connected to the threaded portion (21).

4. A multi-function chain wrench as claimed in claim 1, wherein an annular groove (24) is provided between the threaded portion (21) and the shank (22).

5. The multifunctional chain wrench as claimed in claim 4, wherein two semicircular magnets (25) are disposed between the threaded portion (21) and the handle (22), and the two semicircular magnets (25) are attracted to each other to form a ring to be embedded in the groove (24).

6. A multi-function chain wrench as claimed in claim 1, wherein said screw shank (22) is externally provided with an iron screw bar handle (23), and the surface of said screw bar handle (23) is provided with a rubber paint.

7. A multi-functional chain wrench as claimed in claim 1, in which the outer link plates (11) and the inner link plates (12) are of equal size.

8. A multi-function chain wrench as claimed in claim 1, wherein said number of pins (13) is 14.