CN219792306U - Locking mechanism and lifter thereof - Google Patents

Abstract

The utility model discloses a locking mechanism and a lifter thereof, which belong to the technical field of lifting tools and solve the problems that: how to facilitate the lifting operation of the user and improve the service life and the reliability of the equipment; the utility model provides a locking mechanism has been designed to the main points of its technical scheme, is applied to on the riser, including casing, driving gear, driven gear, rope reel, driving gear and driven gear meshing transmission and install on the casing, driven gear and rope reel pass through components of a whole that can function independently fixed mounting or both form an organic whole structure, one side of driven gear is provided with ratchet inside groove, and the perisporium of ratchet inside groove is the ratchet groove, the cooperation has the locking piece on the ratchet groove, the spacing assembly of locking piece is to the unidirectional locking of driven gear on the casing, be equipped with the handle that descends on the locking piece, be used for driving the locking piece and break away from or get into the ratchet groove when descending the handle rotates, reached the effect be: safe and reliable operation and long service life.

Description

Locking mechanism and lifter thereof

Technical Field

The utility model relates to the technical field of lifting tools, in particular to a locking mechanism and a lifter thereof.

Background

Currently, lifters are machines that can move up and down on a rope (rope body), and their function can also be used to carry goods or to lift an operator on the rope. The lifter generally has the casing, and the casing embeds has a rope winding wheel, and the side fixed ratchet of rope winding wheel to accomplish the locking through ratchet, pawl mutually supporting, can accomplish the unidirectional rotation of rope winding wheel (opposite direction is through ratchet pawl locking), outside driver drive ratchet or rope winding wheel unidirectional rotation, in order to realize rolling rope, and realize moving (rising) on the rope, rise to suitable position, the pawl can both lock the rope winding wheel, thereby avoid the landing, when releasing the pawl, outside the cooperation structure of ratchet pawl, the pawl cooperation is in the outside of ratchet.

Based on the structure that the existing pawl realizes locking outside the ratchet wheel, the ratchet wheel can be loosened, so that descending is realized, the pawl is locked and matched on the outer peripheral surface of the ratchet wheel, and the structure is large in structure size and unstable in descending operation. For example: if the descending process is faster, the ratchet wheel and the pawl are locked suddenly, so that larger impact force is generated, the pawl is easy to crack, and the service life is reduced.

Therefore, the design that the pawl is arranged on the periphery of the ratchet wheel is unreliable, and the technical problem to be solved is how to facilitate the lifting operation of a user and improve the service life and the reliability of the equipment.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a locking mechanism and a lifter thereof, which have the advantages of stable and reliable use, long service life and convenient operation.

In order to achieve the above object and other related objects, the present utility model adopts the following technical scheme:

the utility model provides a locking mechanism and a lifter, wherein the locking mechanism is applied to the lifter. The locking mechanism comprises a shell, a driving gear, a driven gear and a rope winding wheel, wherein the driving gear is meshed with the driven gear for transmission and is arranged on the shell, the driven gear and the rope winding wheel are fixedly assembled through a split body or form an integrated structure,

one side of the driven gear is provided with a ratchet inner groove, the peripheral wall of the ratchet inner groove is a ratchet groove, a locking piece is matched on the ratchet groove, the locking piece is assembled on the shell in a limiting way to lock the driven gear in one direction,

the locking piece is provided with a descending handle, and the descending handle is used for driving the locking piece to be separated from or enter the ratchet groove when rotating.

Preferably, the locking elements are provided in plurality and circumferentially distributed around the ratchet inner slot.

Preferably, the locking piece is a locking slide block, the locking slide block enters or breaks away from a ratchet groove of the ratchet inner groove through horizontal movement, the locking slide block is arranged on the shell in a limiting mode, a spring is sleeved on the locking slide block, the spring keeps the initial state of the locking slide block to be that the locking slide block extends into the ratchet groove of the ratchet inner groove for locking the driven gear, the descending handle is rotationally connected to the shell, drives the locking slide block to compress the spring, and enables the locking slide block to break away from the ratchet inner groove to achieve unlocking.

Preferably, two locking slide blocks are arranged, the descending handle rotates for a first stroke to drive one locking slide block to unlock, and the descending handle continues to rotate to a second stroke to drive a second locking slide block to lock; or alternatively, the process may be performed,

the descending handle rotates, and simultaneously drives the first locking slide block and the second locking slide block to unlock simultaneously.

Preferably, a sliding groove for the linear sliding of the locking sliding blocks is formed in the shell, the descending handle is clamped with each locking sliding block, and the springs are located in the sliding grooves.

Preferably, the locking sliding block is provided with a bump, the bump extends out of a notch of the shell, an arc-shaped clamping groove is formed in the descending handle, the bump is inserted into the clamping groove, the sealing plate is fixed outside the clamping groove of the shell, a rotating shaft is arranged on the shell, the descending handle is rotationally connected to the rotating shaft, the rope winding wheel is assembled on the rotating shaft, a first rope groove is formed in the peripheral surface of the rope winding wheel, and anti-slip ribs are arranged on the inner wall of the first rope groove.

Preferably, the driving gear is rotatably mounted on the housing and leaves a driving shaft outside the housing, and a slot is arranged at the end of the driving shaft.

Preferably, the locking piece is an inner pawl, the inner pawl is rotatably mounted on the shell and is in engagement with the ratchet slot through rotation, a mounting groove for assembling a spring is formed in the shell, the end part of the spring abuts against the inner pawl and is used for keeping the inner pawl attached to the ratchet slot, the descending handle is provided with a shifting block, and the shifting block stretches into the shell and is located on one side of the inner pawl and is used for pushing the inner pawl to rotate so as to be separated from the ratchet slot.

Compared with the background art, the utility model has the technical effects that:

(1) The driven gear and the rope winding wheel are fixedly assembled through a split body or form an integrated structure; at the moment, the integral structural strength and reliability are improved, the ratchet inner groove structure is also convenient to set, and the locking piece can be arranged inside the ratchet inner groove instead of outside, so that the whole mechanism is smaller, more compact and more miniaturized while the structural stability is improved;

(2) The ratchet wheel is provided with a ratchet wheel inner groove, a plurality of locking pieces are matched, the descending handle is used for operating, the convenience of operation is achieved, the descending handle is more safe and reliable, the locking pieces are used for realizing clutch on the ratchet wheel inner groove, reverse motion of the rope winding wheel is achieved, and accordingly descending is achieved.

(3) The assembly of the descending handle is firm and reliable, the operation is flexible, and the operation of the whole descending unlocking is reliable and safe.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of a first embodiment of the present utility model;

FIG. 2 shows a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 4 is an exploded view of the structure from one perspective of the first embodiment;

FIG. 5 is an exploded view of the structure at a second perspective of the first embodiment;

FIG. 6 is an exploded view of the structure of the second embodiment;

FIG. 7 is an exploded view of a structure at a second view angle according to the second embodiment;

fig. 8 is a structural sectional view of a second embodiment;

fig. 9 is a schematic structural diagram of the third embodiment.

[ Main component reference numerals Specification ]

1. A housing; 11. a chute; 12. a mounting groove; 2. a drive gear; 21. a drive shaft; 22. a slot; 3. a driven gear; 31. a ratchet wheel inner groove; 32. ratchet tooth slot; 4. a rope winding wheel; 41. a first rope groove; 42. an anti-slip rib; 5. lowering the handle; 51. a clamping groove; 52. a shifting block; 6. a locking slide block; 61. a bump; 7. a spring; 8. a sealing plate; 9. a rotating shaft; 10. an inner pawl.

Detailed Description

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.

It should be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

The following describes the embodiments of the present utility model further with reference to the drawings.

Embodiment one:

a locking mechanism. The lifting device is applied to a lifter.

The locking mechanism, referring to fig. 1, 2 and 3, comprises a housing 1, a driving gear 2, a driven gear 3 and a rope reel 4, wherein the housing 1 is made of aluminum shell or aviation aluminum, so that the weight of the housing 1 can be reduced. The driving gear 2 is meshed with the driven gear 3 for transmission and is arranged on the shell 1, and the driven gear 3 and the rope winding wheel 4 are fixedly assembled through a split body or form an integrated structure. The driven gear 3 and the sheave 4 are fixed and assembled in a split manner in the structure shown in fig. 4 and 5. Of course, it is also possible to design both as a unitary structure. When the split fixed assembly is adopted, the side faces of the rope winding wheel 4 can be spliced as shown in fig. 4, and the protruding blocks 61 with hexagonal side faces of the driven gear 3 extend into the hexagonal grooves of the rope winding wheel 4 to realize circumferential limiting and fixing. Of course, in other embodiments, the two may be combined into a single unit, so that the two may be rotated synchronously.

As shown in fig. 2, 3, 4 and 5, a ratchet inner groove 31 is arranged on one side of the driven gear 3, the peripheral wall of the ratchet inner groove 31 is a ratchet groove 32, a locking piece is matched on the ratchet groove 32, and the locking piece is assembled on the shell 1 in a limiting way to lock the driven gear 3 in a unidirectional way. The locking member is provided with a descending handle 5, and the descending handle 5 is used for driving the locking member to be separated from or enter the ratchet groove 32 when rotating.

Specifically, a plurality of locking members are provided and circumferentially distributed around the ratchet inner groove 31. The locking piece is a locking slide block 6, the locking slide block 6 enters or breaks away from a ratchet groove 32 of the ratchet inner groove 31 through horizontal movement, the locking slide block 6 is mounted on the shell 1 in a limiting mode, a spring 7 is sleeved on the locking slide block 6, the spring 7 keeps the initial state of the locking slide block 6 to extend into the ratchet groove 32 of the ratchet inner groove 31 for locking the driven gear 3, the descending handle 5 is connected to the shell 1 in a rotating mode, the locking slide block 6 is driven to compress the spring 7, and the locking slide block 6 is separated from the ratchet inner groove 31 to achieve unlocking.

The two locking slide blocks 6 are arranged, the descending handle 5 rotates, and the first locking slide block 6 and the second locking slide block 6 are driven to unlock simultaneously. The shell 1 is provided with a chute 11 for the linear sliding of the locking slide blocks 6, the descending handle 5 is clamped with each locking slide block 6, and the springs 7 are positioned in the chute 11. The locking slider 6 is provided with a lug 61, the lug 61 extends out of a notch of the shell 1, an arc-shaped clamping groove 51 is formed in the descending handle 5, the lug 61 is inserted into the clamping groove 51, the sealing plate 8 is fixed outside the clamping groove 51 of the shell 1, the shell 1 is provided with a rotating shaft 9, the descending handle 5 is rotationally connected to the rotating shaft 9, the rope winding wheel 4 is assembled on the rotating shaft 9, a first rope groove 41 is formed in the peripheral surface of the rope winding wheel 4, and anti-slip ribs 42 are arranged on the inner wall of the first rope groove 41.

The working process is as follows: when the descending handle 5 is broken off, the descending handle 5 rotates by taking the rotating shaft 9 as a rotation center, and at the moment, the descending handle 5 drives the lug 61 of the locking slide block 6 to move along the direction of the sliding groove 11 through the clamping groove 51, namely, the locking slide block 6 compresses the spring 7 along the length direction of the sliding groove 11, the end part of the locking slide block 6 leaves the ratchet groove 32, and the driven gear 3 and the rope winding wheel 4 can rotate in the opposite direction. When in use, the rope winds the rope winding wheel 4 for one circle, and the braking is realized by virtue of the friction between the rope and the rope winding wheel 4. The driving gear 2 is driven to rotate through the external driving motor to realize unidirectional rotation of the rope winding wheel 4, so that the rope winding wheel 4 climbs on a rope to realize rising. When the rope is required to descend, the rope coiling wheel 4 rotates in the opposite direction by swinging the descending handle 5, so that the rope is lowered, and when the rope is descended, the driven gear 3 and the rope coiling wheel 4 are fixedly assembled through a split body or form an integrated structure; at this time, the overall structural strength and reliability are improved, the ratchet inner groove 31 structure is also convenient to set, and the locking piece can be installed inside the ratchet inner groove 31 instead of outside, so that the whole mechanism is smaller, more compact and more miniaturized while the structural stability is improved.

Based on the above structure, the driving gear 2 is rotatably mounted on the housing 1 and leaves a driving shaft 21 outside the housing 1, and an end portion of the driving shaft 21 is provided with a slot 22. The slot 22 is hexagonal, and can adapt to tools such as an electric screwdriver, so that after the driving shaft 21 of the electric tool stretches in, the driving gear 2 is driven to rotate, and the labor-saving lifting operation is realized.

Embodiment two:

the locking mechanism is different from the first embodiment in that: referring to fig. 9, two locking sliders 6 are used, but the spring 7 on one of the locking sliders 6 is mounted at the other end of the locking slider 6, so that it can be seen that the lowering handle 5 rotates a first stroke for driving one of the locking sliders 6 to unlock, and continues to rotate to a second stroke for driving the second locking slider 6 to unlock. By the aid of the design, panic prevention can be realized, and safety is improved. In general, the driven gear 3 can be effectively locked by adopting one locking slide block 6, so that the one-way movement of the driven gear 3 is realized, and the locking slide block 6 is withdrawn when the driven gear is unlocked. The two lock sliders 6 employed in the first embodiment move in synchronization. In this embodiment, the two locking sliders 6 are controlled by the descending handle 5, and the descending handle 5 rotates by an angle a, which is a first-stage gear, namely, unlocking of one locking slider 6 is achieved, and when the descending handle 5 continues to swing by an angle b, which is a second-stage gear, the second locking slider 6 locks the driven gear ring and the rope reel 4, so that if one locking slider 6 fails, the descending handle 5 can be forcibly broken off, and braking of the second locking slider 6 is achieved. In this embodiment, the first locking slider 6 is a spring for keeping the locking slider in the locked state in the initial state. The spring on the second locking slide block adopts a tension spring, namely, the tension spring is used for pulling the second locking slide block to be in an unlocking state. When the lowering handle 5 is operated, the lifting device can be used for panic prevention, the second locking slide block needs to be pulled to the right (the unlocking state is kept) by the tension spring, the first locking slide block above the lowering handle 5 is unlocked (the locking slide block is unlocked in a retreating way), the lifting device can be lowered when the lowering handle is stopped in the middle, when the panic is operated and is out of operation, the lowering handle is continuously opened (on the second stroke), the second locking slide block is pushed to the left by the lowering handle 5 to be locked again after the ratchet groove 32, and the lifting device cannot be continuously lowered.

Embodiment III:

the locking mechanism is different from the first and second embodiments in that:

referring to fig. 6, 7 and 8, the locking member is an inner pawl 10, the inner pawl 10 is rotatably mounted on the housing 1 and is engaged with the ratchet groove 32 by rotation, a mounting groove 12 for assembling the spring 7 is provided on the housing 1, the end of the spring 7 abuts against the inner pawl 10 and is used for keeping the inner pawl 10 attached to the ratchet groove 32, the lowering handle 5 is provided with a pulling block 52, and the pulling block 52 extends into the housing 1 and is positioned on one side of the inner pawl 10 for pushing the inner pawl 10 to rotate and disengage from the ratchet groove 32.

The pulling block 52 of the lowering handle 5 extends into the side surface of the inner pawl 10 to pull the inner pawl 10 to rotate.

Embodiment four:

the lifter can also be called as an ascending and descending device, and after the locking mechanism is adopted, the ascending and descending can be realized very stably and reliably. The rope is wound around the rope reel 4 one turn as shown in fig. 1. One end on the left of the rope is used for being fixed at a high position, the other end of the rope is held by a hand, and an external motor tool can drive the driving gear 2 to rotate, so that the rope winding wheel 4 can roll and climb on the rope to realize rising. The swinging descending handle 5, the rope winding wheel 4 moves in the opposite direction to realize descending, and the slow descending can be realized by the friction force between the rope body and the shell 1.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (9)

1. The utility model provides a locking mechanism, is applied to on the riser, includes casing (1), driving gear (2), driven gear (3), rolls up rope sheave (4), and driving gear (2) and driven gear (3) meshing transmission and install on casing (1), characterized by: the driven gear (3) and the rope winding wheel (4) are fixedly assembled through a split body or form an integrated structure,

one side of the driven gear (3) is provided with a ratchet inner groove (31), the peripheral wall of the ratchet inner groove (31) is a ratchet groove (32), a locking piece is matched with the ratchet groove (32), the locking piece is assembled on the shell (1) in a limiting way to lock the driven gear (3) in one direction,

the locking piece is provided with a descending handle (5), and the descending handle (5) is used for driving the locking piece to be separated from or enter the ratchet groove (32) when rotating.

2. A locking mechanism as set forth in claim 1, wherein: the locking elements are provided in plurality and distributed circumferentially around the ratchet inner groove (31).

3. A locking mechanism as claimed in claim 2, wherein: the locking piece is a locking sliding block (6),

the locking slider (6) enters or breaks away from the ratchet groove (32) of the ratchet inner groove (31) through horizontal movement, the locking slider (6) is arranged on the shell (1) in a limiting mode, the locking slider (6) is sleeved with a spring (7), the spring (7) keeps the initial state of the locking slider (6) to be that the ratchet groove (32) extending into the ratchet inner groove (31) is used for locking the driven gear (3), the descending handle (5) is connected onto the shell (1) in a rotating mode, the locking slider (6) is driven to compress the spring (7), and the locking slider (6) is enabled to break away from the ratchet inner groove (31) to achieve unlocking.

4. A locking mechanism as claimed in claim 3, wherein: the two locking slide blocks (6) are arranged, the descending handle (5) rotates for a first stroke to drive one locking slide block (6) to unlock, and the descending handle continues to rotate to a second stroke to drive a second locking slide block (6) to lock; or alternatively, the process may be performed,

the descending handle (5) rotates, and simultaneously drives the first locking slide block (6) and the second locking slide block (6) to unlock.

5. A locking mechanism as set forth in claim 4, wherein: the shell (1) is provided with a chute (11) for the linear sliding of the locking slide blocks (6), the descending handle (5) is clamped with each locking slide block (6), and the springs (7) are positioned in the chute (11).

6. A locking mechanism as set forth in claim 5, wherein: the locking slider (6) is provided with a lug (61), the lug (61) stretches out of a notch of the shell (1), an arc-shaped clamping groove (51) is formed in the descending handle (5), the lug (61) is inserted into the clamping groove (51), the sealing plate (8) is fixed outside the clamping groove (51) of the shell (1), the shell (1) is provided with a rotating shaft (9), the descending handle (5) is rotationally connected to the rotating shaft (9), the rotating shaft (9) is provided with the rope winding wheel (4), the peripheral surface of the rope winding wheel (4) is provided with a first rope groove (41), and the inner wall of the first rope groove (41) is provided with anti-slip ribs (42).

7. A locking mechanism as set forth in claim 1, wherein: the driving gear (2) is rotatably arranged on the shell (1) and a driving shaft (21) is reserved outside the shell (1), and a slot (22) is formed at the end part of the driving shaft (21).

8. A locking mechanism as claimed in claim 2, wherein: the locking piece is an inner pawl (10), the inner pawl (10) is rotatably mounted on the shell (1) and is in engagement with the ratchet groove (32) through rotation, a mounting groove (12) for assembling a spring (7) is formed in the shell (1), the end portion of the spring (7) is abutted against the inner pawl (10) and used for keeping the inner pawl (10) attached to the ratchet groove (32), the descending handle (5) is provided with a shifting block (52), and the shifting block (52) extends into the shell (1) and is located on one side of the inner pawl (10) and used for pushing the inner pawl (10) to rotate so as to be separated from the ratchet groove (32).

9. A lifter comprising a locking mechanism as claimed in any one of claims 1 to 8.