CN221521938U - Hand pulling block - Google Patents
Hand pulling block Download PDFInfo
- Publication number
- CN221521938U CN221521938U CN202420322206.5U CN202420322206U CN221521938U CN 221521938 U CN221521938 U CN 221521938U CN 202420322206 U CN202420322206 U CN 202420322206U CN 221521938 U CN221521938 U CN 221521938U
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- Prior art keywords
- lifting
- chain wheel
- chain
- hand
- fixedly connected
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- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 238000003825 pressing Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 abstract description 22
- 238000007906 compression Methods 0.000 abstract description 22
- 230000009471 action Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 238000005056 compaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
Abstract
The utility model discloses a chain block, which comprises a shell, wherein a hand chain wheel and a lifting chain wheel are rotationally connected to the shell, a hand chain is wound on the outer side of the hand chain wheel, a lifting chain is wound on the outer side of the lifting chain wheel, openings for the hand chain and the lifting chain to move are respectively formed in the bottom wall of the shell, a mounting plate is arranged between the hand chain wheel and the lifting chain wheel, the mounting plate is fixedly connected with the inner wall of the shell, a supporting plate is fixedly connected in the shell, a plurality of compression blocks are arranged between the supporting plate and the mounting plate and are in sliding connection with the supporting plate, the compression blocks are positioned on the periphery of the lifting chain wheel, a control assembly for controlling the compression of the compression blocks is arranged on the mounting plate, and a transmission assembly for connecting the hand chain wheel and the lifting chain wheel is arranged between the supporting plate and the inner wall of the shell. The utility model has the advantages of simple structure, convenient operation, difficult slipping of the lifting chain, stable structure and high safety.
Description
Technical Field
The utility model relates to the technical field of chain blocks, in particular to a chain block.
Background
The chain block has the characteristics of simple maintenance, high mechanical efficiency, small required space, durability and the like, and is widely applied to factories, mines, construction sites, wharfs, docks, warehouses and the like. The chain block in the prior art is simple in structure, the chain wheel is installed on the installation shaft, the chain wheel is pulled by the chain to hoist the heavy object, and in the use process, the chain is easy to take off due to the fact that the stress of the chain is changed greatly, so that potential safety hazards exist. Therefore, there is a need for a chain block with a stable chain structure that is not easy to be separated.
Disclosure of utility model
The utility model aims to provide a chain block so as to solve the problems in the prior art.
In order to achieve the above object, the present utility model provides the following solutions: the utility model provides a chain block, which comprises a shell, wherein a hand chain wheel and a lifting chain wheel are rotationally connected to the shell, a hand chain is wound on the outer side of the hand chain wheel, a lifting chain is wound on the outer side of the lifting chain wheel, openings for the hand chain and the lifting chain to move are respectively formed in the bottom wall of the shell, a mounting plate is arranged between the hand chain wheel and the lifting chain wheel, the mounting plate is fixedly connected with the inner wall of the shell, a supporting plate is fixedly connected in the shell, a plurality of pressing blocks are arranged between the supporting plate and the mounting plate, the pressing blocks are in sliding connection with the supporting plate, the pressing blocks are positioned on the periphery of the lifting chain wheel, and a control assembly for controlling the pressing of the pressing blocks is arranged on the mounting plate.
Preferably, the hand chain wheel and the lifting chain circumference side are all provided with limiting grooves, the hand chain and the lifting chain are both positioned in the limiting grooves, and one side of the compaction block, which is close to the lifting chain wheel, is provided with an arc groove.
Preferably, the control assembly comprises a rotary table rotationally connected with the mounting plate, a spiral protrusion is arranged on one side, close to the lifting chain wheel, of the rotary table, a plurality of arc grooves matched with the spiral protrusion are formed in the pressing block, the pressing block is in sliding connection with the rotary table, a rotary rod is rotationally connected between the mounting plate and the inner wall of the shell, one end of the rotary rod penetrates through the mounting plate and is fixedly connected with a driving gear, tooth grooves meshed with the driving gear are formed in the periphery of the rotary table, and the other end of the rotary rod penetrates through the side wall of the shell and is fixedly connected with a control knob.
Preferably, the shell is rotationally connected with a rotating shaft, the rotating shaft sequentially penetrates through the hand chain wheel, the mounting plate and the lifting chain wheel, the rotating shaft is fixedly connected with the hand chain wheel, and the rotating shaft is respectively and rotationally connected with the mounting plate and the lifting chain wheel.
Preferably, the transmission assembly comprises a five-tooth transmission wheel fixedly connected with the end part of the rotating shaft, two five-tooth short shafts are rotationally connected between the supporting plate and the inner wall of the shell, the two five-tooth short shafts are symmetrically arranged on two sides of the rotating shaft, a first transmission gear meshed with the five-tooth transmission wheel is fixedly connected to the five-tooth short shafts, a second transmission gear is rotationally connected to the rotating shaft, the second transmission gear is fixedly connected with the lifting chain wheel, and the second transmission gear is positioned between the two five-tooth short shafts and meshed with transmission teeth on the five-tooth short shafts.
Preferably, the compressing blocks are three, the compressing blocks are respectively located at two sides and the top side of the lifting chain wheel, the compressing blocks located at the top side of the lifting chain wheel are horizontally arranged, the other two compressing blocks are vertically arranged, and the bottom ends of the compressing blocks and the two ends of the compressing blocks which are horizontally arranged are arc-shaped.
Preferably, the ratchet wheel is fixedly connected to the circumference of the hand chain wheel, the pawl is fixedly connected to the inner wall of the shell, and the pawl is matched with the ratchet wheel.
The utility model discloses the following technical effects: according to the utility model, the structures such as the mounting plate, the support plate and the like are arranged in the shell to support and limit the structures such as the hand sprocket and the compression block, so that the stability of the whole structure is enhanced. Simultaneously, the control assembly is used for controlling the compression block to move towards the lifting chain wheel, so that the position of the compression block can be adjusted according to the size of the lifting chain, the lifting chain is stably limited, the compression block can only be attached to the lifting chain wheel to move, and slipping is not easy to occur under the action of external force, so that the structure is stable. The utility model has the advantages of simple structure, convenient operation, difficult slipping of the lifting chain, stable structure and high safety.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the chain block of the present utility model;
FIG. 2 is a schematic view of the installation of the compression block and lifting sprocket of the present utility model;
FIG. 3 is a schematic diagram of a turntable according to the present utility model;
Wherein: 1. a housing; 2. a hand sprocket; 3. a lifting chain wheel; 4. a hand-pulled chain; 5. a hoisting chain; 6. a mounting plate; 7. a support plate; 8. a compaction block; 9. a turntable; 10. spiral bulges; 11. a rotating lever; 12. a drive gear; 13. a control knob; 14. a rotating shaft; 15. a five-tooth driving wheel; 16. five-tooth short shaft; 17. a first transmission gear; 18. a second transmission gear; 19. a ratchet wheel; 20. a pawl.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1-3, the utility model provides a chain block, which comprises a shell 1, wherein a chain wheel 2 and a lifting chain wheel 3 are rotationally connected in the shell 1, a chain 4 is wound on the outer side of the chain wheel 2, a lifting chain 5 is wound on the outer side of the lifting chain wheel 3, openings for the chain 4 and the lifting chain 5 to move are respectively formed in the bottom wall of the shell 1, a mounting plate 6 is arranged between the chain wheel 2 and the lifting chain wheel 3, the mounting plate 6 is fixedly connected with the inner wall of the shell 1, a supporting plate 7 is fixedly connected in the shell 1, a plurality of pressing blocks 8 are arranged between the supporting plate 7 and the mounting plate 6, the pressing blocks 8 are slidably connected with the supporting plate 7, the pressing blocks 8 are positioned on the periphery side of the lifting chain wheel 3, a control assembly for controlling the pressing of the pressing blocks 8 is arranged on the mounting plate 6, and a transmission assembly for connecting the chain wheel 2 and the lifting chain wheel 3 is arranged between the supporting plate 7 and the inner wall of the shell 1. The hand sprocket 2 and the compacting block 8 are supported and limited by arranging the mounting plate 6, the supporting plate 7 and other structures in the shell 1, so that the stability of the whole structure is enhanced. Meanwhile, the control assembly is used for controlling the compression block 8 to move towards the lifting chain wheel 3, so that the position of the compression block 8 can be adjusted according to the size of the lifting chain 5, the lifting chain 5 is stably limited, the lifting chain can only be attached to the lifting chain wheel 3 for movement, and slipping structure stability is not easy to occur under the action of external force.
In a specific embodiment, limiting grooves are formed in the circumferential sides of the hand chain wheel 2 and the lifting chain 5, the hand chain 4 and the lifting chain 5 are located in the limiting grooves, and an arc groove is formed in one side, close to the lifting chain wheel 3, of the compression block 8. The part of the hand chain 4 of the vertical lifting chain wheel 3 can be limited through the circular arc groove, and the lifting chain 5 is stably positioned on the lifting chain wheel 3 to move by utilizing the cooperation of the circular arc groove and the limiting groove, so that the structural stability is enhanced.
Specifically, a limiting plate for limiting the zipper 4 is fixedly connected in the housing 1, which is in the prior art and will not be described herein.
In a specific embodiment, the supporting plate 7 is provided with a sliding rail, and the pressing block 8 slides towards the lifting chain wheel 3 through the sliding rail.
In a specific embodiment, the control assembly comprises a rotary table 9 rotationally connected with the mounting plate 6, a spiral protrusion 10 is arranged on one side, close to the lifting chain wheel 3, of the rotary table 9, a plurality of arc-shaped grooves matched with the spiral protrusion 10 are formed in the pressing block 8, the pressing block 8 is slidably connected with the rotary table 9, a rotary rod 11 is rotationally connected between the mounting plate 6 and the inner wall of the shell 1, one end of the rotary rod 11 penetrates through the mounting plate 6 and is fixedly connected with a driving gear 12, tooth grooves meshed with the driving gear 12 are formed in the peripheral side of the rotary table 9, and the other end of the rotary rod 11 penetrates through the side wall of the shell 1 and is fixedly connected with a control knob 13. The rotary rod 11 is driven to rotate through the control knob 13, the driving gear 12 is driven to rotate, the rotary table 9 is driven to rotate through the tooth grooves in the rotation process of the driving gear 12, and the compression block 8 slides centripetally on the supporting plate 7, so that the compression block 8 slides towards the center gradually under the action of the spiral protrusion 10 on the rotary table 9, the lamination of the compression block 8 and the lifting chain 5 is realized, and the control of the compression block 8 is realized.
Specifically, the side of compact heap 8 that is close to carousel 9 is provided with the slide, and the arc groove is seted up on the slide, and the slide is laminated with the two pitch arc of spiral arch 10 simultaneously at least.
In a specific embodiment, a rotating shaft 14 is rotatably connected to the housing 1, the rotating shaft 14 penetrates through the hand sprocket 2, the mounting plate 6 and the lifting sprocket 3 in sequence, the rotating shaft 14 is fixedly connected with the hand sprocket 2, and the rotating shaft 14 is respectively and rotatably connected with the mounting plate 6 and the lifting sprocket 3.
In a specific embodiment, the transmission assembly comprises a five-tooth transmission wheel 15 fixedly connected with the end part of the rotation shaft 14, two five-tooth short shafts 16 are rotatably connected between the support plate 7 and the inner wall of the shell 1, the two five-tooth short shafts 16 are symmetrically arranged at two sides of the rotation shaft 14, a first transmission gear 17 meshed with the five-tooth transmission wheel 15 is fixedly connected on the five-tooth short shafts 16, a second transmission gear 18 is rotatably connected on the rotation shaft 14, the second transmission gear 18 is fixedly connected with the lifting chain wheel 3, and the second transmission gear 18 is positioned between the two five-tooth short shafts 16 and meshed with transmission teeth on the five-tooth short shafts 16. The five-tooth driving wheel 15 drives the two first driving gears 17 to rotate, and then the five-tooth short shaft 16 drives the second driving gears 18 to rotate, so that the lifting chain wheel 3 is driven to rotate, and the transmission is realized.
By changing the traditional four-tooth short shaft into a five-tooth short shaft, when a weight with a certain value is lifted, the hand pulling force is only 68% of the hand pulling force of the original structure, so that the labor is saved.
In a specific embodiment, the compressing blocks 8 are three, the compressing blocks 8 are respectively located at two sides and the top side of the lifting chain wheel 3, the compressing blocks 8 located at the top side of the lifting chain wheel 3 are horizontally arranged, the other two compressing blocks 8 are vertically arranged, and the bottom ends of the vertically arranged compressing blocks 8 and the two ends of the horizontally arranged compressing blocks 8 are arc-shaped. Can carry out spacing to the both sides and the top side of lifting sprocket 3 simultaneously, make lifting chain 5 fully laminate with lifting sprocket 3, can not take place the slippage under the exogenic action. Because the bottom end of the vertically arranged compression block 8 and the two ends of the horizontally arranged compression block 8 are arc-shaped, the lifting chain 5 is not easy to be blocked with the compression block 8 in the moving process, and the normal work of the device is ensured.
In a specific embodiment, a ratchet 19 is fixedly connected to the circumference of the hand sprocket 2, a pawl 20 is fixedly connected to the inner wall of the housing 1, and the pawl 20 is matched with the ratchet 19. The inner wall of the housing 1 is fixedly connected with a spring for applying pressure to the pawl 20, and this structure is the prior art and will not be described here. The ratchet pawl structure can prevent the hand sprocket 2 from suddenly reversing under the action of gravity of the weight in the working process, so that the weight is prevented from falling.
The working process of the utility model comprises the following steps: when the lifting chain is used, the position of the compression block 8 is adjusted according to the size of the lifting chain 5, the control knob 13 is rotated, the control knob 13 drives the driving gear 12 to rotate through the rotating rod 11, the driving gear 12 drives the rotary table 9 to rotate, and the compression block 8 can only centripetally slide under the action of the spiral protrusion 10 on the rotary table 9 due to the fact that the compression block 8 slides along the supporting plate 7 and the sliding direction is centripetally, so that the lifting chain 5 is attached to the lifting chain 5, and the lifting chain 5 is prevented from slipping under the action of external force in the working process. Then the hand-pulling chain 4 is pulled, the hand-pulling chain 4 pulls the hand-pulling chain wheel 2 to rotate, and then the rotating shaft 14 is driven to rotate, the rotating shaft 14 drives the two first transmission gears 17 to rotate through the five-tooth transmission wheels 15, the two first transmission gears 17 drive the five-tooth short shaft 16 to rotate, the second transmission gears 18 are driven to rotate by utilizing the transmission teeth on the five-tooth short shaft 16, and the second transmission gears 18 are fixedly connected with the lifting chain wheel 3, so that the lifting chain wheel 3 is driven to rotate, and the lifting chain wheel 3 lifts a heavy object through the lifting chain 5 in the rotating process.
In the description of the present utility model, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present utility model, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.
The above embodiments are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solutions of the present utility model should fall within the protection scope defined by the claims of the present utility model without departing from the design spirit of the present utility model.
Claims (7)
1. The utility model provides a chain block which characterized in that: including casing (1), casing (1) internal rotation is connected with hand sprocket (2) and lifting sprocket (3), hand sprocket (2) outside is around being equipped with hand chain (4), lifting sprocket (3) outside is around being equipped with lifting chain (5), the confession has been seted up respectively to casing (1) diapire hand chain (4) and lifting chain (5) moving opening, hand sprocket (2) with be provided with mounting panel (6) between lifting sprocket (3), mounting panel (6) with casing (1) inner wall fixed connection, fixedly connected with backup pad (7) in casing (1), backup pad (7) with install a plurality of compact heap (8) between mounting panel (6), compact heap (8) with backup pad (7) sliding connection, compact heap (8) are located lifting sprocket (3) week side, install on mounting panel (6) and control compact heap (8) hold down, backup pad (7) with casing (1) inner wall fixedly connected with hand sprocket (3) between lifting sprocket (2).
2. The chain block as set forth in claim 1, wherein: the hand chain wheel (2) and the lifting chain (5) are provided with limiting grooves on the periphery, the hand chain (4) and the lifting chain (5) are located in the limiting grooves, and the side, close to the lifting chain wheel (3), of the pressing block (8) is provided with an arc groove.
3. The chain block as set forth in claim 1, wherein: the control assembly comprises a rotary table (9) which is rotationally connected with the mounting plate (6), one side, close to the lifting sprocket (3), of the rotary table (9) is provided with a spiral protrusion (10), a plurality of arc grooves which are matched with the spiral protrusion (10) are formed in the pressing block (8), the pressing block (8) is in sliding connection with the rotary table (9), a rotary rod (11) is rotationally connected between the mounting plate (6) and the inner wall of the shell (1), one end of the rotary rod (11) penetrates through the mounting plate (6) and is fixedly connected with a driving gear (12), tooth grooves meshed with the driving gear (12) are formed in the periphery of the rotary table (9), and the other end of the rotary rod (11) penetrates through the side wall of the shell (1) and is fixedly connected with a control knob (13).
4. The chain block as set forth in claim 1, wherein: the hand chain wheel is characterized in that a rotating shaft (14) is rotationally connected to the shell (1), the rotating shaft (14) sequentially penetrates through the hand chain wheel (2), the mounting plate (6) and the lifting chain wheel (3), the rotating shaft (14) is fixedly connected with the hand chain wheel (2), and the rotating shaft (14) is rotationally connected with the mounting plate (6) and the lifting chain wheel (3) respectively.
5. The chain block as set forth in claim 4, wherein: the transmission assembly comprises a five-tooth transmission wheel (15) fixedly connected with the end part of the rotating shaft (14), two five-tooth short shafts (16) are rotationally connected between the supporting plate (7) and the inner wall of the shell (1), the two five-tooth short shafts (16) are symmetrically arranged on two sides of the rotating shaft (14), a first transmission gear (17) meshed with the five-tooth transmission wheel (15) is fixedly connected to the five-tooth short shafts (16), a second transmission gear (18) is rotationally connected to the rotating shaft (14), the second transmission gear (18) is fixedly connected with the lifting chain wheel (3), and the second transmission gear (18) is positioned between the two five-tooth short shafts (16) and meshed with transmission teeth on the five-tooth short shafts (16).
6. The chain block as set forth in claim 1, wherein: the utility model discloses a lifting chain wheel, including lifting chain wheel (3), compact heap (8), clamping bar (8) are provided with three, compact heap (8) are located respectively lifting chain wheel (3) both sides and top, are located lifting chain wheel (3) top compact heap (8) level sets up, and remaining two compact heap (8) are vertical setting, vertical setting compact heap (8) bottom and level setting compact heap (8) both ends are the arc.
7. The chain block as set forth in claim 1, wherein: the hand chain wheel (2) is fixedly connected with a ratchet wheel (19) at the periphery, a pawl (20) is fixedly connected with the inner wall of the shell (1), and the pawl (20) is matched with the ratchet wheel (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420322206.5U CN221521938U (en) | 2024-02-21 | 2024-02-21 | Hand pulling block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420322206.5U CN221521938U (en) | 2024-02-21 | 2024-02-21 | Hand pulling block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221521938U true CN221521938U (en) | 2024-08-13 |
Family
ID=92185673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420322206.5U Active CN221521938U (en) | 2024-02-21 | 2024-02-21 | Hand pulling block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221521938U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118723837A (en) * | 2024-08-30 | 2024-10-01 | 河北沪工起重设备集团有限公司 | A labor-saving hand chain hoist and its use method |
-
2024
- 2024-02-21 CN CN202420322206.5U patent/CN221521938U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118723837A (en) * | 2024-08-30 | 2024-10-01 | 河北沪工起重设备集团有限公司 | A labor-saving hand chain hoist and its use method |
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