CN210528332U

CN210528332U - Chain block convenient to chain returns

Info

Publication number: CN210528332U
Application number: CN201921496644.9U
Authority: CN
Inventors: 刘福军; 李�浩; 赵延君
Original assignee: Shaanxi Joy Power Engineering Co Ltd
Current assignee: Jiuyi Power Engineering Co ltd
Priority date: 2019-09-09
Filing date: 2019-09-09
Publication date: 2020-05-15
Anticipated expiration: 2029-09-09

Abstract

The utility model relates to a chain block convenient to chain returns in manual hoisting equipment field, aim at solving the efficiency problem that promotes the heavy object, it includes the chain block body, the chain block body includes first wallboard and second wallboard, be equipped with the jack-up main part between first wallboard and the second wallboard, one side that the second wallboard deviates from first wallboard is equipped with the ratchet and with ratchet meshing's pawl, one side that the ratchet deviates from the second wallboard is equipped with the hand sprocket wheel, hand sprocket wheel periphery is equipped with chain pull, the one end that the ratchet was kept away from to the pawl is equipped with the fixed axle that passes the pawl, the fixed axle rotates with the pawl and is connected and one end and second wallboard is connected, one side that the pawl deviates from the ratchet is equipped with the spring leaf that is close to the one end butt of ratchet with the pawl, the one end that the pawl was kept away from to the spring leaf is connected with the second wallboard, be equipped. The utility model discloses have the effect of the convenient quick adjustment jack-up couple position in the jack-up main part when not hanging the heavy object in the jack-up main part.

Description

Chain block convenient to chain returns

Technical Field

The utility model belongs to the technical field of manual hoisting equipment's technique and specifically relates to a chain block convenient to chain returns is related to.

Background

The chain block is a manual hoisting machine which is simple to use and convenient to carry, is suitable for factories, mines, construction sites, agricultural production, docks, warehouses and the like, is used as a mounting machine for lifting goods and loading and unloading vehicles, and particularly plays an important role in outdoor and powerless operation.

The existing chinese patent, which is published as CN204643678U, discloses a chain type chain block, which comprises a long shaft, a hoisting main body, a hand chain wheel, a hand chain, a chain wheel housing, and a chain wheel housing, wherein the chain wheel housing and the hoisting main body are connected in a relative rotation manner; the load limiting assembly comprises a brake seat, a load limiting seat and an inner fixing nut, wherein the brake seat, the load limiting seat and the inner fixing nut are sequentially sleeved on the long shaft from inside to outside and are in threaded connection with the long shaft; the hand chain wheel, the pressing plate, the disc spring piece, the stop washer and the outer fixing nut are sequentially sleeved on the load limiter base from inside to outside, second friction plates are respectively attached to two sides of the hand chain wheel, the second friction plate on one hoisting side is attached to the pressing plate, the second friction plate on the other hoisting side is attached to the brake base, and the hand chain wheel is sleeved with the hand chain.

When the heavy object is lifted, the heavy object is usually connected with the lifting main body firstly, the drawing in the specification shows that the lifting hook connected with the heavy object is arranged on the lifting main body through the lifting chain, the load limiting component and the hand chain wheel can freely rotate around the long shaft, meanwhile, the chain wheel housing and the lifting main body are also in a rotatable connection mode, when the lifting device is used, the rotating angles of the hand chain wheel, the load limiting component and the chain wheel housing can be adjusted at will through the hand chain, and the lifting of the heavy object at various angles such as inclination, transverse and reverse lifting can be realized.

The above prior art solutions have the following drawbacks: constantly stimulate hand chain to make hand sprocket clockwise rotate until after hoisting the heavy object to the take the altitude, before the heavy object of second hangs the height, need to stimulate hand chain to make hand sprocket anticlockwise rotate until descending to the low department with the jack-up couple of jack-up main part, fall back to the low department with the jack-up couple when, still need continuous pulling hand chain, can make the jack-up couple move a segment distance because stimulate manual very long hand chain, the removal of control heavy object that such design can be laborsaving when having the heavy object, but when not having the heavy object, when needing the jack-up couple displacement of jack-up main part, still need the very long distance manual chain of long-time pulling, waste time and manpower, when hanging high heavy object in batches, efficiency is not high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a chain block convenient to chain return, it has the effect of the convenient quick adjustment jack-up couple position in the jack-up main part when not hanging the heavy object in the jack-up main part.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides a chain block convenient to chain returns, includes the chain block body, the chain block body includes first wallboard and second wallboard, be equipped with the jack-up main part between first wallboard and the second wallboard, one side that the second wallboard deviates from first wallboard is equipped with the ratchet and with ratchet engaged's pawl, one side that the ratchet deviates from the second wallboard is equipped with hand sprocket, hand sprocket periphery is equipped with hand chain, the one end that the ratchet was kept away from to the pawl is equipped with the fixed axle that passes the pawl, the fixed axle rotates with the pawl and is connected and one end is connected with the second wallboard, one side that the pawl deviates from the ratchet is equipped with the spring leaf that is close to the one end butt of ratchet with the pawl, the spring leaf is kept away from the one end of pawl and is connected with the second wallboard, be equipped with the drive pawl on the pawl around fixed axle pivoted control lever.

By adopting the technical scheme, the hand-pulling chain is pulled to enable the hand chain wheel to rotate clockwise so as to enable the lifting main body to lift the heavy object, and in the process of lifting the heavy object, when the hand-pulling chain is not pulled, the pawl is meshed and clamped with the ratchet wheel under the action of the spring piece, so that the ratchet wheel cannot rotate anticlockwise, and the heavy object cannot descend; when the heavy object is lifted, the heavy object is unloaded, the control rod is held to enable the pawl to rotate anticlockwise around the fixed shaft, the pawl is separated from the ratchet wheel, the ratchet wheel is not clamped by the pawl, the ratchet wheel can rotate freely, the lifting hook of the lifting main body drives the ratchet wheel and the hand chain wheel to rotate anticlockwise under the self gravity until the lifting hook of the lifting main body falls back to the lower position, the control rod is loosened, the pawl is meshed with the ratchet wheel to be clamped tightly under the action of the spring piece, and the ratchet wheel can not rotate anticlockwise any more. The lifting hook position adjusting speed is improved when no heavy object exists on the lifting hook of the lifting main body, and the overall efficiency of lifting the heavy object is improved.

The utility model discloses further set up to: one side of the fixed shaft, which is opposite to the end where the pawl is meshed with the ratchet wheel, is connected with one end of the control rod and the pawl, which is far away from the ratchet wheel.

Through adopting above-mentioned technical scheme, grip the one end that the pawl was kept away from to the control lever, towards anticlockwise promotion control lever make it rotate around the fixed axle, the control lever is being driven the pawl and is being made its and ratchet separation around anticlockwise rotation around the fixed axle in the in-process that is promoted, makes the control pawl rotate laborsavingly according to lever principle.

The utility model discloses further set up to: the pawl is equipped with the lantern ring that cup joints with the control lever towards the one end of control lever, one side of control lever orientation second wallboard is equipped with the sliding sleeve that supplies the control lever to slide along the control lever axial direction, the sliding sleeve is equipped with the slider towards one side of second wallboard, be equipped with on the second wallboard and supply the slider to use the fixed axle to use the distance to slide as the radius between slider and the fixed axle as the centre of a circle.

Through adopting above-mentioned technical scheme, the control lever cup joints with the lantern ring, when needing to adjust the position relation of pawl and ratchet, grips the control lever control and makes the slider slide along the spout, makes the lantern ring and sliding sleeve adjust well, then grips the control lever and moves towards the lantern ring along the control lever axial direction in the sliding sleeve, makes the control lever cup joint with the lantern ring, holds control and makes the slider slide along the spout and adjust the separation and the butt of pawl and ratchet. After the adjustment and connection are completed, the control rod moves in the sliding sleeve in the direction of deviating from the lantern ring along the axial direction of the control rod, so that the control rod is separated from the lantern ring, when the hand chain wheel and the ratchet wheel rotate when the hand chain is pulled, the pawl is not connected with the control rod, the spring piece enables the force required for the pawl to be kept to be abutted against the ratchet wheel to be reduced, and the service life of the spring piece can be prolonged.

The utility model discloses further set up to: one end of the control rod, which is close to the lantern ring, is provided with a plurality of first bulges, and the inner wall of the lantern ring is provided with a first concave hole clamped with the first bulges.

Through adopting above-mentioned technical scheme, when the control lever is connected with the lantern ring, the first arch on the control lever and the intra-annular second shrinkage pool chucking of lantern ring stabilize being connected of control lever and lantern ring.

The utility model discloses further set up to: and limiting pieces which can be abutted against two end faces of the sliding sleeve are arranged on the control rods at two ends of the sliding sleeve.

Through adopting above-mentioned technical scheme, can prevent the control lever landing from the sliding sleeve with the spacing piece of sliding sleeve terminal surface butt, improve the stability that control lever and sliding sleeve are connected. The control rod is not required to be drawn out when not in use, and the convenience of the use of the control rod is improved.

The utility model discloses further set up to: the limiting piece is provided with a plurality of second protrusions on the outer wall of the control rod on one side of the sliding sleeve, and the inner wall of the sliding sleeve is provided with second concave holes clamped by the second protrusions.

Through adopting above-mentioned technical scheme, the control lever separates the back with the lantern ring, and the second shrinkage pool chucking of second shrinkage pool and sliding sleeve inner wall on the control lever, and stability control's position when not using the control lever reduces the displacement of control lever and sliding sleeve, improves the stable shape of control lever, reduces the contact of other parts of control lever and chain block body, keeps chain block's stability.

The utility model discloses further set up to: and a first limiting block is arranged on the second wallboard on one side of the control rod facing the ratchet wheel, and the pawl is separated from the ratchet wheel when the control rod and the lantern ring are sleeved and abutted against the first limiting block. One side of first stopper orientation control lever is equipped with the recess that holds the control lever, be equipped with the arc flexure strip on the opening side inner wall of recess.

Through adopting above-mentioned technical scheme, the back is accomplished in the lifting hook adjustment of jack-up main part, the control lever that grips makes the slider slide along the spout, the mobile control pole passes through and gets into in the recess behind the arc flexure strip, the recess is arranged in to the control lever, there is the arc flexure strip to block the opening part of recess, the position of stabilizing the control lever, reduce and do not use the displacement between control lever messenger slider and the spout, reduce rocking of control lever, further reduce other parts of control lever and chain block body and bump, guarantee the steady operation of chain block body.

The utility model discloses further set up to: and a second limiting block is arranged on the second wallboard on one side of the control rod, and the second limiting block is abutted to the control rod and the sleeve ring in a sleeved mode and the pawl tightly clamps the ratchet wheel.

Through adopting above-mentioned technical scheme, the second stopper with butt when control lever and lantern ring cup joint and pawl chucking ratchet grips the control lever and makes the slider along the sliding sleeve cunning move to with control lever and second gag lever post butt, the lantern ring is adjusted well with the sliding sleeve this moment, the control lever also adjusts well with the lantern ring, grips the control lever and moves towards the lantern ring along control lever axial direction in the sliding sleeve, can inject the control lever in the lantern ring, improve the speed that the control lever was adjusted well with the lantern ring, improve the efficiency of the jack-up couple position of adjustment jack-up main part.

The utility model discloses further set up to: and a pointed end is arranged at one end of the control rod close to the lantern ring.

Through adopting above-mentioned technical scheme, the tip becomes the inclined plane, and the control lever need not be adjusted well with the lantern ring completely, only needs the summit of tip and lantern ring to have intersection, grips the control lever and moves the tip towards the lantern ring and can inject the lantern ring and make the control lever get into the lantern ring completely, and the existence of tip can make the faster getting into the lantern ring of control lever in, improves the efficiency of the jack-up couple position of adjustment jack-up main part.

To sum up, the utility model discloses a beneficial technological effect does:

1. the separation of the pawl and the ratchet wheel is controlled through the control rod, so that the adjusting speed of the position of the lifting hook when no heavy object exists on the lifting hook of the lifting main body is increased, and the overall efficiency of lifting the heavy object is improved;

2. the control rod is sleeved with the lantern ring, so that the pawl can be separated from and connected with the lantern ring, the pawl is not connected with the control rod, the spring piece enables the force required by the pawl to be kept to be abutted against the ratchet wheel to be reduced, and the service life of the spring piece can be prolonged;

3. the second concave hole is matched with the second bulge, and the groove is formed, so that the shaking of the control rod when the control rod is not used is reduced, and the stable operation of the chain block body is ensured;

4. the first limiting block and the chuck can improve the connection speed of the control rod and the sliding sleeve.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the hand chain wheel connection of the present invention.

Fig. 3 is a schematic view of the mounting structure of the control rod of the present invention.

Fig. 4 is a schematic structural diagram of the first stopper and the control rod of the present invention.

Reference numerals: 11. a chain block body; 12. fixing the hook; 13. a first wall panel; 14. a second wall panel; 15. a hoisting main body; 16. a lifting hook; 17. a hoisting chain; 2. a long axis; 21. a housing; 22. a protective cover; 23. a through groove; 24. a hand sprocket; 25. pulling a chain by hand; 3. a ratchet wheel; 31. a pawl; 32. a fixed shaft; 33. a control lever; 34. a spring plate; 4. a collar; 41. a first protrusion; 42. a first recess; 43. a tip; 44. a limiting sheet; 5. a sliding sleeve; 51. a slider; 52. an arc-shaped chute; 53. a second limiting block; 54. a second recess; 55. a second protrusion; 6. a first stopper; 61. a groove; 62. an arc-shaped elastic sheet.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, for the utility model discloses a chain block convenient to chain back, including chain block body 11, chain block body 11 includes first wallboard 13 and second wallboard 14 and the fixed couple 12 between first wallboard 13 and the second wallboard 14, is equipped with jack-up main part 15 between first wallboard 13 and the second wallboard 14, and jack-up main part 15 is including the jack-up chain 17 that is located jack-up chain wheel (not shown in the figure) and jack-up chain wheel periphery between first wallboard 13 and the second wallboard 14, and the one end of jack-up chain 17 is equipped with jack-up couple 16. A long shaft 2 is arranged through the center of the hoisting chain wheel, the long shaft 2 is provided with a transmission component (not shown in the figure) connected with the hoisting chain wheel through the first wall plate 13, and a shell 21 comprising the transmission component is arranged on one side of the first wall plate 13, which is far away from the second wall plate 14. One side that second wallboard 14 deviates from first wallboard 13 is equipped with ratchet 3 and the pawl 31 with ratchet 3 butt, and one side that ratchet 3 deviates from second wallboard 14 is equipped with hand sprocket 24, and hand sprocket 24 periphery is equipped with hand chain 25. The long shaft 2 is connected with a brake nut through a second wall plate 14 in a threaded manner, the ratchet wheel 3 is sleeved on the brake nut (shown in the figure), friction plates (shown in the figure) are arranged on two sides of the ratchet wheel 3, and the friction plates are sleeved on the brake nut. The hand chain wheel 24 is in threaded connection with the long shaft 2, and a locking nut (not shown in the figure) is arranged on one side of the hand chain wheel 24, which is far away from the ratchet wheel 3. One side of the second wall plate 14 departing from the first wall plate 13 is provided with a protective cover 22, and the protective cover 22 is provided with a through groove 23 for the hand-pulling chain 25 to pass through.

As shown in fig. 3, in order to quickly adjust the position of the lifting hook 16 without a heavy object, a fixed shaft 32 penetrating through the pawl 31 is disposed at one end of the pawl 31 away from the ratchet 3, the fixed shaft 32 is rotatably connected with the pawl 31 and has one end connected with the second wall plate 14, a spring plate 34 abutting against one end of the pawl 31 close to the ratchet 3 is disposed at one side of the pawl 31 away from the ratchet 3, one end of the spring plate 34 away from the pawl 31 is fixedly connected with the second wall plate 14, and a control rod 33 for driving the pawl 31 to rotate around the fixed shaft 32 is disposed on the pawl 31. A control rod 33 is connected to the end of the pawl 31 remote from the ratchet 3. The side of the fixed shaft 32 opposite to the end of the pawl 31 engaged with the ratchet 3 is connected with the end of the control rod 33 away from the ratchet 3 of the pawl 31. The end of the lever 33 remote from the pawl 31 extends out of the shield 22 and the shield 22 is provided with a slot for movement of the lever 33 about the fixed axis 32.

As shown in fig. 3 and 4, in order to further reduce the load of the spring piece 34, a collar 4 sleeved with the control rod 33 is disposed at one end of the pawl 31 facing the control rod 33, a sliding sleeve 5 for sliding the control rod 33 along the axial direction of the control rod 33 is disposed at one side of the control rod 33 facing the second wall plate 14, a sliding block 51 is disposed at one side of the sliding sleeve 5 facing the second wall plate 14, and an arc-shaped sliding slot 52 for sliding the sliding block 51 with the fixed shaft 32 as a center and with a distance between the sliding block 51 and the fixed shaft 32 as a radius is disposed on the second wall plate 14.

As shown in fig. 3 and 4, in order to further improve the efficiency and stability of the connection between the control rod 33 and the collar 4, a second stopper 53 is disposed on the second wall plate 14 on one side of the control rod 33, and the second stopper 53 abuts against the control rod 33 and the collar 4 when the ratchet 3 is tightly clamped by the pawl 31. The control rod 33 is provided with a spike 43 at one end adjacent the collar 4. One end of the control rod 33 close to the lantern ring 4 is provided with a plurality of first bulges 41, and the inner wall of the lantern ring 4 is provided with a first concave hole 42 clamped with the first bulges 41.

As shown in fig. 3 and 4, in order to further improve the stability of the control rod 33, the control rod 33 at both ends of the slide sleeve 5 is provided with stopper pieces 44 which can abut against both end surfaces of the slide sleeve 5. The outer wall of the control rod 33, facing one side of the sliding sleeve 5, of the limiting sheet 44 is provided with a plurality of second protrusions 55, and the inner wall of the sliding sleeve 5 is provided with second concave holes 54 tightly clamped by the second protrusions 55. The first limiting block 6 is arranged on the second wall plate 14 on one side, facing the ratchet wheel 3, of the control rod 33, and the pawl 31 is separated from the ratchet wheel 3 when the control rod 33 is sleeved with the lantern ring 4 and is abutted against the first limiting block 6. One side of the first limiting block 6 facing the control rod 33 is provided with a groove 61 for accommodating the control rod 33, and the inner wall of the opening side of the groove 61 is provided with an arc-shaped elastic sheet 62. One end of the arc-shaped elastic piece 62 is fixedly connected with the inner wall of the groove 61, and the concave surface of the arc-shaped elastic piece 62 faces to the corresponding inner wall of the groove 61. The control rod 33 enters the groove 61 and is positioned on one side of the arc-shaped elastic piece 62 away from the opening of the groove 61.

The implementation principle of the embodiment is as follows: when a heavy object needs to be lifted, the position of the chain block body 11 is fixed through the fixed hook 12, the heavy object is hung on the lifting hook 16, the hand chain 25 is pulled to enable the hand chain wheel 24 to rotate clockwise so as to enable the lifting main body 15 to lift the heavy object, and in the lifting process of the heavy object, when the hand chain 25 is not pulled, the pawl 31 is abutted and clamped with the ratchet 3 under the action of the spring piece 34, so that the ratchet 3 cannot rotate anticlockwise, and the heavy object cannot fall; and when the weight is lifted, the weight is unloaded. When the control rod 33 is held, the control rod 33 is abutted against the second limiting block 53, the control rod 33 is pushed towards one end of the lantern ring 4 to the control rod 33 to enter the lantern ring 4, the control rod 33 is held to enable the pawl 31 to rotate anticlockwise around the fixed shaft 32, the pawl 31 is separated from the ratchet wheel 3, the ratchet wheel 3 is not clamped by the pawl 31, the ratchet wheel 3 can rotate freely, the lifting hook 16 of the lifting main body 15 drives the ratchet wheel 3 and the hand chain wheel 24 to rotate anticlockwise under the self gravity until the lifting hook 16 of the lifting main body 15 falls to the low position, the control rod 33 is loosened, the pawl 31 is abutted against the ratchet wheel 3 and clamped under the action of the spring piece 34, and the ratchet wheel 3 can not rotate anticlockwise any more. The control rod 33 is held and pulled towards the direction departing from the lantern ring 4 to separate the control rod 33 from the lantern ring 4, the control rod 33 is held to enable the second concave hole 54 and the second protrusion 55 to be clamped, and the control rod 33 enters the groove 61 of the first limiting block 6, so that the position of the control rod 33 when the control rod 33 is not used is stabilized.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a chain block convenient to chain returns, includes chain block body (11), chain block body (11) include first wallboard (13) and second wallboard (14), be equipped with between first wallboard (13) and second wallboard (14) jack-up main part (15), one side that second wallboard (14) deviate from first wallboard (13) is equipped with ratchet (3) and pawl (31) with ratchet (3) butt, one side that ratchet (3) deviate from second wallboard (14) is equipped with hand sprocket (24), hand sprocket (24) periphery is equipped with hand chain (25), its characterized in that: one end that ratchet (3) were kept away from in pawl (31) is equipped with fixed axle (32) of passing pawl (31), fixed axle (32) rotate with pawl (31) and be connected and one end is connected with second wallboard (14), one side that pawl (31) deviate from ratchet (3) is equipped with spring leaf (34) that are close to ratchet (3) one end butt with pawl (31), the one end that pawl (31) were kept away from in spring leaf (34) is connected with second wallboard (14), be equipped with drive pawl (31) on pawl (31) around fixed axle (32) pivoted control lever (33).

2. The chain block convenient for chain returning of claim 1, wherein: one side of the fixed shaft (32) opposite to the meshed end of the pawl (31) and the ratchet wheel (3) is connected with one end of the control rod (33) and the pawl (31) far away from the ratchet wheel (3).

3. The chain block convenient for chain returning of claim 2, wherein: pawl (31) are equipped with lantern ring (4) that cup joints with control lever (33) towards the one end of control lever (33), one side that control lever (33) are towards second wallboard (14) is equipped with sliding sleeve (5) that supply control lever (33) to slide along control lever (33) axial direction, sliding sleeve (5) are equipped with slider (51) towards one side of second wallboard (14), be equipped with on second wallboard (14) and supply slider (51) to use fixed axle (32) as the centre of a circle with slider (51) and fixed axle (32) between distance as the arc spout (52) that the radius slided.

4. The chain block convenient for chain returning of claim 3, wherein: one end of the control rod (33) close to the sleeve ring (4) is provided with a plurality of first bulges (41), and the inner wall of the sleeve ring (4) is provided with a first concave hole (42) clamped with the first bulges (41).

5. The chain block convenient for chain returning of claim 3, wherein: and limiting pieces (44) which can be abutted against two end faces of the sliding sleeve (5) are arranged on the control rods (33) at two ends of the sliding sleeve (5).

6. The chain block convenient for chain returning of claim 5, wherein: the limiting piece (44) is provided with a plurality of second protrusions (55) on the outer wall of the control rod (33) facing one side of the sliding sleeve (5), and the inner wall of the sliding sleeve (5) is provided with second concave holes (54) clamped by the second protrusions (55).

7. The chain block convenient for chain returning of claim 6, wherein: in be equipped with first stopper (6) on control lever (33) second wallboard (14) towards ratchet (3) one side, pawl (31) and ratchet (3) separation when control lever (33) and lantern ring (4) cup joint and with first stopper (6) butt, one side that first stopper (6) towards control lever (33) is equipped with recess (61) that hold control lever (33), be equipped with arc flexure strip (62) on the opening side inner wall of recess (61).

8. The chain block convenient for chain returning of claim 3, wherein: and a second limiting block (53) is arranged on the second wall plate (14) on one side of the control rod (33), and the second limiting block (53) is connected with the control rod (33) and the sleeve ring (4) in a sleeved mode and is abutted to the ratchet wheel (3) in a pawl (31) clamping mode.

9. The chain block convenient for chain returning of claim 3, wherein: a pointed end (43) is arranged at one end of the control rod (33) close to the lantern ring (4).