CN214653271U

CN214653271U - Lever block with high safety

Info

Publication number: CN214653271U
Application number: CN202120719487.4U
Authority: CN
Inventors: 许利桥
Original assignee: Hangzhou Qikala Lifting Machinery Co ltd
Current assignee: Hangzhou Qikala Lifting Machinery Co ltd
Priority date: 2021-04-08
Filing date: 2021-04-08
Publication date: 2021-11-09
Anticipated expiration: 2031-04-08

Abstract

The utility model discloses a high lever block of security, including the lever block body, the major axis is worn to be equipped with in lever block body middle part, and lever block body one side is rotated and is installed the handle components who links to each other with major axis one end, installs hoisting sprocket on the lever block body, the chain that the cooperation was installed on hoisting sprocket, and the hoisting sprocket cover is established in the major axis outside, hoisting sprocket is outer along being equipped with two at least chain mounting grooves that suit with the chain that are parallel to each other, and the chain mounting groove is formed by horizontal chain groove and the crisscross intercommunication in proper order of vertical chain groove, the chain is installed with chain mounting groove one-to-one, install the chain guide block on the lever block body, one side that is close to hoisting sprocket on the chain guide block is equipped with the chain guide groove the same with chain mounting groove quantity and the position is corresponding. The utility model has the advantages of many chains simultaneous workings can be allowed to hoisting sprocket, and a chain fracture back lever block still can be used, and the security is high.

Description

Lever block with high safety

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of lever block, especially, relate to a high lever block of security.

[ background of the invention ]

The lever block is manually operated by manpower to obtain a linear traction force matched with a load by virtue of a lever principle, and the chain and the lifting hook drive a heavy object to move, so that the lever block can perform lifting, traction, descending, calibration and other operations. It has the advantages of compact structure, light weight, small overall dimension, convenient carrying, labor saving, small hand pulling force and the like. The lever block mainly includes left wall plate, right wall plate, handle, long shaft, ratchet wheel, pawl, spring, gear assembly and other parts, and if special equipment is provided, it can not only do non-linear traction operation, but also can conveniently select proper operation position, or can multiply its load capacity by using machine tool with smaller tonnage, and for load with larger tonnage several machine tools can be used for parallel operation.

The existing lever block is mostly of a single-chain structure, stress is concentrated when the single-chain is lifted, the risk of chain fracture is increased after the single-chain is used for a long time, and the chain fracture can lead to load falling so that the lever block cannot be used continuously, and the safety of the lever block is low.

[ Utility model ] content

The utility model aims at solving the problem in the background art, provide a high lever block of security, can make jack-up sprocket can allow many chains simultaneous workings, a chain fracture back lever block still can use, and the security is high.

In order to achieve the purpose, the utility model provides a high lever block of security, including the lever block body, the major axis is worn to be equipped with in lever block body middle part, and lever block body one side is rotated and is installed the handle components who links to each other with major axis one end, installs hoisting sprocket on the lever block body, the chain that the cooperation was installed on hoisting sprocket, and the hoisting sprocket cover is established in the major axis outside, hoisting sprocket is outer along being equipped with two at least chain mounting grooves that suit with the chain that are parallel to each other, and the chain mounting groove is crisscross the intercommunication in proper order by horizontal chain groove and vertical chain groove and forms, chain and chain mounting groove one-to-one installation, install the chain guide piece on the lever block body, the one side that is close to hoisting sprocket on the chain guide piece is equipped with the chain guide groove the same with chain mounting groove quantity and the position is corresponding.

Preferably, the number of the chain mounting grooves, the number of the chains and the number of the chain guide grooves are all 2, the double chains are convenient to mount, and the double chains are arranged to ensure the use safety of the lever block.

Preferably, the top of the lever hoist body is provided with an upper lifting hook assembly, so that the lever hoist can be conveniently hung at a high place for use.

Preferably, the chain is wound on the chain mounting groove, two ends of the chain are located on two sides of the chain mounting groove, one end of the chain is connected with the lower hook component, and the other end of the chain is connected with the handle component.

Preferably, the lever hoist body is provided with chain blocking plates, the chain blocking plates correspond to one of the chain guide blocks in position, ordered and stable sliding of the chain can be guaranteed, and the chain is not easy to loosen and dislocate.

Preferably, the outer side of one end, far away from the handle assembly, of the hoisting chain wheel is provided with a tooth surface, and the tooth surface is meshed with a gear on the long shaft, so that the hoisting chain wheel and the long shaft are firmly connected.

The utility model has the advantages that: the utility model discloses a hoisting sprocket to install on the lever block body sets up two at least chain mounting grooves, and the chain mounting groove is formed by horizontal chain groove and the crisscross intercommunication in proper order of vertical chain groove, and the hoisting sprocket both sides are equipped with the chain guide block who takes the chain guide groove for many chains of the last parallel installation of hoisting sprocket, allow many chains simultaneous workings, a chain fracture back lever block still can normal use, and the security is high, agrees with each other between chain and the chain mounting groove and makes the chain slip in-process can not drop.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic overall split view of an embodiment of the present invention;

fig. 3 is a left side view of an embodiment of the present invention;

fig. 4 is a right side view of an embodiment of the present invention;

fig. 5 is a cross-sectional view taken along line a-a of fig. 4 in accordance with an embodiment of the present invention;

fig. 6 is a top view of an embodiment of the present invention;

fig. 7 is a schematic view of a jack sprocket according to an embodiment of the present invention.

In the figure: 1-lever block body, 2-lifting chain wheel, 3-lower lifting hook component, 4-chain, 5-chain guide block, 10-long shaft, 11-upper lifting hook component, 12-handle component, 13-right wall plate, 14-left wall plate, 15-brake nut, 16-ratchet wheel, 17-brake seat, 18-long shaft spring, 19-pawl, 21-tooth surface, 22-chain mounting groove and 141-pawl mounting shaft.

[ detailed description ] embodiments

Referring to fig. 1 to 7, the present embodiment provides a high-safety lever block, which includes a lever block body 1, a long shaft 10 is inserted through the middle of the lever block body 1, a handle assembly 12 connected to one end of the long shaft 10 is rotatably installed on one side of the lever block body 1, a lifting sprocket 2 and a chain 4 cooperatively installed on the lifting sprocket 2 are installed on the lever block body 1, the lifting sprocket 2 is sleeved outside the long shaft 10, at least two parallel chain installation slots 22 corresponding to the chain 4 are formed on the outer edge of the lifting sprocket 2, the chain installation slots 22 are formed by sequentially and alternately communicating a horizontal chain slot and a vertical chain slot, the horizontal chain slot is corresponding to the horizontal surface of the chain 4, the vertical chain slot is corresponding to the longitudinal surface of the chain 4, the chain 4 is installed in one-to-one correspondence with the chain installation slots 22, and a chain guide block 5 is installed on the lever block body 1, one side of the chain guide block 5 close to the lifting chain wheel 2 is provided with chain guide grooves which are the same in number and correspond to the chain mounting grooves 22 in position, wherein the top of the lever block body 1 is provided with an upper hook assembly 11, the lever block body 1 comprises a left wall plate 14, a right wall plate 13, a ratchet wheel 16, a pawl 19, a brake nut 15 and a brake seat 17, the left wall plate 14 and the right wall plate 13 are arranged in parallel and are connected by four support rods, the chain guide block 5 is arranged between the left wall plate 14 and the right wall plate 13, the left end of the main shaft 10 passes through the lifting chain wheel 2 and the brake seat 17 and then is connected with the brake nut 15, the left wall plate 14 is provided with two pawl mounting shafts 141, the pawl mounting shafts 141 are provided with the pawl 19 and a torsion spring which are oppositely arranged in a matching way, the pawl 19 is meshed with the ratchet wheel 16, a friction plate is arranged between the ratchet wheel 16 and the brake seat 17, a long shaft spring 18 which is sleeved outside the long shaft 10 is arranged between the brake nut 15 and the ratchet wheel 16, the right end of the long shaft 10 is provided with a tooth surface and is meshed with the two piece gear assemblies, a hand wheel 16 is fixedly arranged on the handle assembly 12, and the tail end of the hand wheel 16 is meshed and connected with a brake nut 15.

The number of chain mounting slots 22, chains 4 and chain guide slots is 2.

The top of the lever hoist body 1 is provided with an upper lifting hook component 11.

The chain 4 encircles on chain mounting groove 22 and chain 4 both ends are located chain mounting groove 22 both sides, and the one end of chain 4 is connected with down lifting hook subassembly 3, and the other end of chain 4 is connected with handle subassembly 41.

The lever hoist body 1 is provided with chain blocking plates corresponding to one of the chain guide blocks 5.

The sprocket wheel 2 is provided with a toothed surface 21 on the outside of the end remote from the handle assembly 12, which toothed surface 21 engages with a toothed wheel on the long shaft 10.

The working process of the embodiment is as follows:

in the working process of the embodiment, the hand wheel 16 can be driven to rotate by rotating the handle component 12, the hand wheel 16 can be driven to rotate to drive the brake nut 15 to rotate, the brake nut 15 can be driven to rotate to drive the long shaft 10 to rotate, the hoisting chain wheel 2 starts to rotate after the long shaft 10 rotates, and the hoisting chain wheel 2 can drive the two chains 4 to slide so that the lower lifting hook component 3 can pull a load to ascend or descend.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. The utility model provides a high lever block of security, includes the lever block body, and the major axis is worn to be equipped with in lever block body middle part, and lever block body one side is rotated and is installed the handle components who links to each other with major axis one end, installs hoisting sprocket on the lever block body, cooperates the chain of installing on hoisting sprocket, and the hoisting sprocket cover is established in the major axis outside, its characterized in that: the chain hoist comprises a lifting chain wheel and is characterized in that at least two mutually parallel chain mounting grooves which are matched with a chain are arranged on the outer edge of the lifting chain wheel, the chain mounting grooves are formed by sequentially and alternately communicating a transverse chain groove and a vertical chain groove, the chain and the chain mounting grooves are mounted in a one-to-one correspondence mode, a chain guide block is mounted on a lever block body, and chain guide grooves which are the same in number and correspond to the chain mounting grooves in position are arranged on one side, close to the lifting chain wheel, of the chain guide block.

2. A safety lever block as set forth in claim 1, wherein: the number of the chain mounting grooves, the number of the chains and the number of the chain guide grooves are all 2.

3. A safety lever block as set forth in claim 1, wherein: and an upper lifting hook component is arranged at the top of the lever hoist body.

4. A safety lever block as set forth in claim 1, wherein: the chain encircles on the chain mounting groove and the chain both ends are located chain mounting groove both sides, and the one end of chain is connected with down the lifting hook subassembly, and the other end of chain is connected with the handle subassembly.

5. A safety lever block as set forth in claim 1, wherein: and the lever hoist body is provided with chain blocking plates, and the chain blocking plates correspond to one of the chain guide blocks in position.

6. A safety lever block as set forth in claim 1, wherein: and the outer side of one end of the hoisting chain wheel, which is far away from the handle assembly, is provided with a tooth surface, and the tooth surface is meshed with a gear on the long shaft.