Chain block tool lifting appliance convenient to install and position

Abstract

The utility model relates to the technical field of tool lifting appliances, and discloses a chain block tool lifting appliance convenient to install and position. The chain block tool lifting appliance convenient to install and position comprises a shell, a bearing is installed at the center of the shell in a penetrating mode, a connecting disc is fixedly installed at the center of the bearing, a main shaft is fixedly installed at the rear end of the connecting disc, and a connecting base is installed on the front side of a connecting plate in an X shape with the center of the connecting plate as the reference. The tail end of the clamping spring is fixedly connected with the connecting seats, the front end of the clamping spring is fixedly connected with the pawls, the pawls are rotationally connected with the connecting seats, the clamping spring can limit the angles of the pawls, the pawls can be conveniently kept in an embedded state with the ratchet wheel, the four pawls are limited on the outer side of the ratchet wheel in an X shape through the four connecting seats, and the ratchet wheel can be embedded with the four pawls. In this way, the situation that the pawls are broken due to the fact that the pawls are stressed for a long time can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling slings, in particular to a hand-operated hoist tooling sling that is convenient for installation and positioning. Background Technique

[0002] For a hand-operated hoist, by pulling the manual chain, the bracelet wheel rotates, pressing the friction plate ratchet and the brake seat together to rotate jointly, and the tooth long shaft then rotates the piece gear, the tooth short shaft and the spline hole gear. In this way, the lifting sprocket mounted on the spline hole gear drives the lifting chain, thereby smoothly lifting the heavy object.

[0003] The existing Chinese utility model patent with the reference publication number: CN207434914U discloses a hand-operated hoist, which includes a hand-operated hoist body having a wheel disc, a bracelet wheel, a manual chain, a guiding gear, a guiding roller, a traction chain, a hanging hook and a hanging object hook. Among them, the bracelet wheel is rotatably connected to the back of the wheel disc, the manual chain is wound around the bracelet wheel to drive the rotation of the bracelet wheel, the guiding gear and the guiding roller are connected to the front of the wheel disc and the guiding gear penetrates through the wheel disc and is rearwardly connected to the bracelet wheel, the hanging hook is located above the wheel disc and is fixedly connected to the upper end of the traction chain, the middle section of the traction chain is supported on the guiding gear and hung on the guiding roller, the wheel disc is connected with a chain pocket for receiving the traction chain at the position corresponding to the lower end of the traction chain, and the hanging object hook is connected to the wheel disc below the wheel disc. Compared with the prior art, the utility model is safe, practical, portable and beautiful.

[0004] The existing hand-operated hoists generally use a ratchet and a pawl to achieve the reverse effect. When lifting an object, the pawl engages with the ratchet to prevent the main shaft from reversing, so as to keep the object at a certain height. In this way, the weight of the object is transmitted to the main shaft through the gear set and then to the pawl through the ratchet. The pawl is stressed for a long time and may break. At the same time, the hooks of the existing hand-operated hoists generally use springs to limit the position of the anti-detachment device to prevent the hanging structure from slipping off. After long-term use, the springs will age, resulting in the anti-detachment device not working properly, which may cause the hanging structure to fall off the hook. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the prior art, the utility model provides a hand-operated hoist tooling sling that is convenient for installation and positioning, which has the advantages of prolonging the service life of the pawl and being able to prevent the hook from falling off when the spring ages, and solves the above technical problems.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solutions: A manual hoist tooling sling that is convenient for installation and positioning, comprising: a housing, a bearing is inserted and installed in the center of the housing, a connection plate is fixedly installed in the center of the bearing, a main shaft is fixedly installed at the rear end of the connection plate, a connection plate is fixedly installed at the rear end of the housing, a connection seat is fixedly installed on the front side of the connection plate, a snap ring and a pawl are inserted and installed on the outside of the connection seat, a limit ring is fixedly installed at the end of the connection seat, a connection column is fixedly installed on the rear side of the connection plate, a limit plate is fixedly installed at the rear end of the connection column, a limit wheel and a connection block are movably installed on the front side of the limit plate, a hook is fixedly installed in the center of the connection block, a limit tube is movably installed on the outside of the hook, a hoisting sprocket is inserted and installed in the center of the limit plate, a hoisting chain is fitted and installed on the outside of the hoisting sprocket, a limit shaft is fixedly installed on the rear side of the limit plate, a four-tooth short shaft is inserted and installed on the outside of the limit shaft, a spur gear is fixedly installed at the front end of the four-tooth short shaft, and a driving gear is meshed and installed between the spur gears; the connection plate can fix the main shaft and the driving sprocket.

[0009] As a preferred technical solution of the present utility model, a driving sprocket is inserted and installed on the outside of the main shaft, a driving chain is fitted and installed on the outside of the driving sprocket, a limit seat is movably installed on the outside of the main shaft, a friction plate and a ratchet are inserted and installed on the outside of the limit seat, and the friction plates are symmetrically installed on the front and rear sides of the ratchet with the center of the ratchet as a reference; the friction plate can increase the friction force between the ratchet and the driving sprocket.

[0010] As a preferred technical solution of the present utility model, an opening structure engaged with the driving gear is provided at the rear end of the main shaft, the front end of the main shaft is fixedly connected to the connection plate by means of insertion, the connection plate is fixedly connected to the driving sprocket by bolts, the connection plate is rotatably connected to the housing through a bearing, and the main shaft is rotatably connected to the connection plate; the main shaft can facilitate transmission.

[0011] As a preferred technical solution of the present utility model, a threaded structure is provided in the center of the main shaft, the limit seat is movably connected to the main shaft through the threaded structure of the main shaft, the connection seat is installed in an "X" shape on the front side of the connection plate with the center of the connection plate as a reference, the end of the snap ring is fixedly connected to the connection seat, and the front end of the snap ring is fixedly connected to the pawl, and the pawl is rotatably connected to the connection seat; the pawl can limit the rotation angle of the ratchet.

[0012] As a preferred technical solution of the present utility model, a cover is fixedly installed at the rear end of the limit plate. A rotational connection is formed between the limit wheel and the limit plate and the connecting plate. Threaded structures are provided on the outer sides of the cylindrical structures on the upper and lower sides of the opening of the hook. A groove that fits with the threaded structure of the hook is provided on the inner wall of the limit tube; the limit plate can limit the position of the hoisting sprocket.

[0013] As a preferred technical solution of the present utility model, a rotational connection is formed between the hoisting sprocket and the limit plate. A convex structure is provided on the outer side of the hoisting sprocket. The hoisting sprocket and the transmission gear are meshed with each other. The front end of the limit shaft is fixedly connected to the limit plate, and the rear end is fixedly connected to the cover; the hoisting sprocket can drive the hoisting chain to rotate.

[0014] As a preferred technical solution of the present utility model, the limit shaft is symmetrically installed on the rear side of the limit plate with the center of the transmission gear as the reference. A rotational connection is formed between the four-tooth short shaft, the spur gear and the limit shaft. The driving gear is inserted and fixed at the end of the main shaft. A rotational connection is formed between the hoisting sprocket and the main shaft; the driving gear can facilitate the main shaft to drive the spur gear to rotate.

[0015] Compared with the prior art, the present utility model provides a hand-operated hoist tooling sling that is convenient for installation and positioning, and has the following beneficial effects:

[0016] 1. Through the setting of the connecting seat in the present utility model, the connecting seat is installed in an "X" shape on the front side of the connecting plate with the center of the connecting plate as the reference. The end of the snap spring is fixedly connected to the connecting seat, and the front end of the snap spring is fixedly connected to the pawl. A rotational connection is formed between the pawl and the connecting seat. The snap spring can limit the angle of the pawl, facilitating the pawl to maintain the state of being engaged with the ratchet. The four pawls are limited in an "X" shape outside the ratchet by the four connecting seats, and the ratchet will be engaged with the four pawls, so that the four pawls share the reverse torque of the ratchet. This method can prevent the pawl from being stressed for a long time and causing the pawl to break.

[0017] 2. Through the setting of the connecting tube in the present utility model, threaded structures are provided on the outer sides of the cylindrical structures on the upper and lower sides of the opening of the hook. A groove that fits with the threaded structure of the hook is provided on the inner wall of the limit tube. The limit tube is movably installed outside the hook and forms a rotational connection with the hook. This method can adjust the relative position between the limit tube and the hook by rotation during suspension, so that the limit tube is located at the opening of the hook to prevent the hook from slipping. And this method cancels the spring reset method to avoid the influence of spring aging on the limit structure. At the same time, when the upper and lower ends of the limit tube are connected to the upper and lower sides of the hook opening, the rigidity of the hook can be increased. Description of the Drawings

[0018] Figure 1Schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 Schematic diagram of the installation structure of the outer shell and the connecting plate of the present utility model;

[0020] Figure 3 Schematic diagram of the installation structure of the pawl of the present utility model;

[0021] Figure 4 Schematic diagram of the installation structure of the hook and the limiting tube of the present utility model;

[0022] Figure 5 Schematic diagram of the installation structure of the transmission gear of the present utility model;

[0023] Wherein: 1. Outer shell; 11. Bearing; 12. Connecting plate; 13. Main shaft; 14. Driving sprocket; 15. Driving chain; 16. Limiting seat; 17. Friction plate; 18. Ratchet; 19. Connecting plate; 110. Connecting seat; 111. Snap ring; 112. Pawl; 113. Limiting ring; 114. Connecting column; 2. Limiting plate; 21. Cover; 22. Limiting wheel; 23. Connecting block; 24. Hook; 25. Limiting tube; 26. Lifting sprocket; 27. Lifting chain; 28. Transmission gear; 29. Limiting shaft; 210. Four-tooth short shaft; 211. Chip gear; 212. Driving gear. Specific embodiments

[0024] The following further describes in detail the embodiments of the present utility model with reference to the accompanying drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0025] In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more; the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "connected to" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Please refer to Figure 1 - Figure 5 , in this embodiment, a hand chain hoist tooling sling that is convenient for installation and positioning includes: a housing 1, a bearing 11 is inserted and installed in the center of the housing 1, a connection disk 12 is fixedly installed in the center of the bearing 11, a main shaft 13 is fixedly installed at the rear end of the connection disk 12, a driving sprocket 14 is inserted and installed on the outer side of the main shaft 13, a driving chain 15 is fitted and installed on the outer side of the driving sprocket 14, a limit seat 16 is movably installed on the outer side of the main shaft 13, a friction plate 17 and a ratchet 18 are inserted and installed on the outer side of the limit seat 16, the friction plate 17 is symmetrically installed on the front and rear sides of the ratchet 18 with the center of the ratchet 18 as the reference, a connection plate 19 is fixedly installed at the rear end of the housing 1, a connection seat 110 is fixedly installed on the front side of the connection plate 19, a snap spring 111 and a pawl 112 are inserted and installed on the outer side of the connection seat 110, a limit ring 113 is fixedly installed at the end of the connection seat 110, and a connection column 114 is fixedly installed on the rear side of the connection plate 19.

[0028] An opening structure that engages with the driving gear 212 is provided at the rear end of the main shaft 13. The front end of the main shaft 13 is fixedly connected to the connection disk 12 in an inserted manner. The connection disk 12 is fixedly connected to the driving sprocket 14 by bolts. The connection disk 12 is rotatably connected to the housing 1 through the bearing 11. The main shaft 13 is rotatably connected to the connection plate 19.

[0029] A threaded structure is provided in the center of the main shaft 13. The limit seat 16 is movably connected to the main shaft 13 through the threaded structure of the main shaft 13. The connection seat 110 is installed in an "X" shape on the front side of the connection plate 19 with the center of the connection plate 19 as the reference. The end of the snap spring 111 is fixedly connected to the connection seat 110, and the front end of the snap spring 111 is fixedly connected to the pawl 112. The pawl 112 is rotatably connected to the connection seat 110.

[0030] Specifically, the outer shell 1 can limit the position of the drive chain 15, the bearing 11 can facilitate the rotation of the connecting disc 12, the connecting disc 12 can fix the main shaft 13 and the drive sprocket 14, the main shaft 13 can facilitate power transmission, the drive chain 15 can drive the main shaft 13 to rotate through the drive sprocket 14, the limit seat 16 can limit the position of the friction plate 17, the friction plate 17 can increase the friction force between the ratchet 18 and the drive sprocket 14, the ratchet 18 can be engaged with the pawl 112 to prevent the drive sprocket 14 from reversing, the connecting plate 19 can limit the position of the connecting seat 110, the connecting seat 110 can limit the position of the pawl 112, the snap ring 111 can facilitate the reset of the pawl 112, the pawl 112 can limit the rotation angle of the ratchet 18, the limit ring 113 can prevent the pawl 112 from slipping off, and the connecting column 114 can limit the position between the connecting plate 19 and the limit plate 2.

[0031] A limit plate 2 is fixedly installed at the rear end of the connecting column 114. A limit wheel 22 and a connecting block 23 are movably installed on the front side of the limit plate 2. A hook 24 is fixedly installed at the center of the connecting block 23. A limit tube 25 is movably installed on the outer side of the hook 24. A hoisting sprocket 26 is inserted and installed at the center of the limit plate 2. A hoisting chain 27 is fitted and installed on the outer side of the hoisting sprocket 26. A limit shaft 29 is fixedly installed at the rear side of the limit plate 2. A four-tooth short shaft 210 is inserted and installed on the outer side of the limit shaft 29. A spur gear 211 is fixedly installed at the front end of the four-tooth short shaft 210. A drive gear 212 is meshingly installed between the spur gears 211.

[0032] A cover 21 is fixedly installed at the rear end of the limit plate 2. A rotational connection is formed between the limit wheel 22, the limit plate 2, and the connecting plate 19. Threaded structures are provided on the outer sides of the columnar structures on the upper and lower sides of the opening of the hook 24. A groove that is fitted with the threaded structure of the hook 24 is provided on the inner wall of the limit tube 25.

[0033] A rotational connection is formed between the hoisting sprocket 26 and the limit plate 2. A protruding structure is provided on the outer side of the hoisting sprocket 26. The hoisting sprocket 26 and the transmission gear 28 are meshed with each other. The front end of the limit shaft 29 is fixedly connected to the limit plate 2, and the rear end is fixedly connected to the cover 21.

[0034] The limit shaft 29 is symmetrically installed on the rear side of the limit plate 2 with the center of the transmission gear 28 as the reference. A rotational connection is formed between the four-tooth short shaft 210, the spur gear 211, and the limit shaft 29. The drive gear 212 is inserted and fixed at the end of the main shaft 13. A rotational connection is formed between the hoisting sprocket 26 and the main shaft 13.

[0035] Specifically, the limit plate 2 can limit the position of the hoisting sprocket 26, the cover 21 can protect the spur gear 211, the limit wheel 22 can limit the hoisting chain 27 to remain engaged with the hoisting sprocket 26, the connecting block 23 can facilitate the connection between the hook 24 and the limit plate 2, the hook 24 can facilitate the suspension of the manual hoist, the hook 24 is also installed at the movable end of the hoisting chain 27, the limit tube 25 can prevent the hook 24 from slipping off, the hoisting sprocket 26 can drive the hoisting chain 27 to rotate, the hoisting chain 27 can facilitate lifting heavy objects, the transmission gear 28 can facilitate the four-tooth short shaft 210 to drive the hoisting sprocket 26 to rotate, the limit shaft 29 can limit the position of the four-tooth short shaft 210, the four-tooth short shaft 210 can facilitate the spur gear 211 to drive the transmission gear 28 to rotate, the spur gear 211 can facilitate the drive gear 212 to drive the four-tooth short shaft 210 to rotate, and the drive gear 212 can facilitate the main shaft 13 to drive the spur gear 211 to rotate.

[0036] In use, first, the limit tube 25 is rotated upward to expose the opening of the hook 24, then the chain hoist is suspended, and after the suspension is completed, the limit tube 25 is rotated back to its original position. The connecting seat 110 is installed in an "X" shape on the front side of the connecting plate 19 with the center of the connecting plate 19 as the reference. The end of the snap spring 111 is fixedly connected to the connecting seat 110, and the front end of the snap spring 111 is fixedly connected to the pawl 112. A rotational connection is formed between the pawl 112 and the connecting seat 110. The snap spring 111 can limit the angle of the pawl 112, facilitating the pawl 112 to maintain the state of being engaged with the ratchet wheel 18. The four pawls 112 are limited to the outside of the ratchet wheel 18 in an "X" shape by the four connecting seats 110, and the ratchet wheel 18 will be engaged with the four pawls 112, so that the four pawls 112 share the reverse torque of the ratchet wheel 18. This method can prevent the pawl 112 from being stressed for a long time, which may cause the pawl 112 to break. Threaded structures are provided on the outer sides of the cylindrical structures on the upper and lower sides of the opening of the hook 24, and grooves that are engaged with the threaded structures of the hook 24 are provided on the inner wall of the limit tube 25. The limit tube 25 is movably installed on the outside of the hook 24 and forms a rotational connection with the hook 24. In this way, when suspending, the relative position between the limit tube 25 and the hook 24 can be adjusted by rotation to make the limit tube 25 located at the opening of the hook 24, preventing the hook 24 from slipping off. Moreover, this method eliminates the spring reset method, avoiding the influence of spring aging on the limit structure. At the same time, when the upper and lower ends of the limit tube 25 are connected to the upper and lower sides of the opening of the hook 24, the rigidity of the hook 24 can be increased, and the limit operation during suspension can be reduced, facilitating installation. After connecting the hook 24 at the lower end of the lifting chain 27 to the heavy object, the main shaft 13 can be rotated by driving the chain 15. The main shaft 13 will drive the spur gear 211 to rotate through the driving gear 212. The spur gear 211 will drive the transmission gear 28 to rotate through the four-tooth short shaft 210, so that the lifting sprocket 26 drives the lifting chain 27 to lift the heavy object.

[0037] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hand chain hoist tooling lifting device that is easy to install and position, characterized in that: include: A housing (1), wherein a bearing (11) is inserted and installed at the center of the housing (1), a connecting plate (12) is fixedly installed at the center of the bearing (11), a main shaft (13) is fixedly installed at the rear end of the connecting plate (12), a connecting plate (19) is fixedly installed at the rear end of the housing (1), a connecting seat (110) is fixedly installed at the front side of the connecting plate (19), a retaining ring (111) and a ratchet (112) are inserted and installed at the outer side of the connecting seat (110), a limiting ring (113) is fixedly installed at the end of the connecting seat (110), a connecting column (114) is fixedly installed at the rear side of the connecting plate (19), and a limiting plate (2) is fixedly installed at the rear end of the connecting column (114), A limiting wheel (22) and a connecting block (23) are movably mounted on the front side of the limiting plate (2); a hook (24) is fixedly mounted at the center of the connecting block (23); a limiting tube (25) is movably mounted on the outer side of the hook (24); a lifting sprocket (26) is inserted through the center of the limiting plate (2); a lifting chain (27) is mounted in engagement with the outer side of the lifting sprocket (26); a limiting shaft (29) is fixedly mounted on the rear side of the limiting plate (2); a four-tooth short shaft (210) is inserted through the outer side of the limiting shaft (29); a plate gear (211) is fixedly mounted at the front end of the four-tooth short shaft (210); a driving gear (212) is mounted in engagement with the plate gears (211).

2. A hand chain hoist tooling lifting device that is easy to install and position according to claim 1, characterized in that: A driving sprocket (14) is inserted and installed on the outer side of the main shaft (13), and a driving chain (15) is embedded and installed on the outer side of the driving sprocket (14). A limit seat (16) is movably installed on the outer side of the main shaft (13), and a friction plate (17) and a ratchet (18) are inserted and installed on the outer side of the limit seat (16). The friction plate (17) is symmetrically installed on the front and rear sides of the ratchet (18) with the center of the ratchet (18) as a reference.

3. The hand chain hoist tooling lifting device that is easy to install and position according to claim 1 is characterized in that: The rear end of the main shaft (13) is provided with an open hole structure engaged with the driving gear (212); the front end of the main shaft (13) is fixedly connected to the connecting plate (12) by means of insertion; the connecting plate (12) is fixedly connected to the driving sprocket (14) by means of bolts; the connecting plate (12) is rotationally connected to the housing (1) by means of a bearing (11); and the main shaft (13) is rotationally connected to the connecting plate (19).

4. The hand chain hoist tooling lifting device that is easy to install and position according to claim 2, characterized in that: A threaded structure is provided at the center of the main shaft (13); the limiting seat (16) is movably connected to the main shaft (13) through the threaded structure of the main shaft (13); the connecting seat (110) is installed on the front side of the connecting plate (19) in an "X" shape with the center of the connecting plate (19) as a reference; the end of the retaining spring (111) is fixedly connected to the connecting seat (110), and the front end of the retaining spring (111) is fixedly connected to the pawl (112); and the pawl (112) and the connecting seat (110) are rotatably connected.

5. The hand chain hoist tooling lifting device that is easy to install and position according to claim 1 is characterized in that: A sealing cover (21) is fixedly mounted on the rear end of the limiting plate (2); the limiting wheel (22) is rotatably connected to the limiting plate (2) and the connecting plate (19); a threaded structure is arranged on the outer side of the columnar structures on the upper and lower sides of the opening of the hook (24); and a groove is arranged on the inner wall of the limiting tube (25) to engage with the threaded structure of the hook (24).

6. The hand chain hoist tooling lifting device that is easy to install and position according to claim 1, characterized in that: The lifting sprocket (26) and the limiting plate (2) are rotatably connected, a protrusion structure is provided on the outer side of the lifting sprocket (26), the lifting sprocket (26) and the transmission gear (28) are meshed with each other, the front end of the limiting shaft (29) is fixedly connected to the limiting plate (2), and the rear end is fixedly connected to the sealing cover (21).

7. The hand chain hoist tooling lifting device that is easy to install and position according to claim 1, characterized in that: The limiting shaft (29) is symmetrically installed on the rear side of the limiting plate (2) with the center of the transmission gear (28) as the reference, and the four-tooth short shaft (210), the plate gear (211) and the limiting shaft (29) are rotatably connected. The driving gear (212) is inserted and fixed at the end of the main shaft (13), and the lifting sprocket (26) and the main shaft (13) are rotatably connected.

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