CN215828171U

CN215828171U - Outer formula hoist that presss from both sides

Info

Publication number: CN215828171U
Application number: CN202122220288.1U
Authority: CN
Inventors: 丁冲
Original assignee: Shandong Jinshanbao Environmental Protection Equipment Co ltd
Current assignee: Shandong Jinshanbao Environmental Protection Equipment Co ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-02-15
Anticipated expiration: 2031-09-14

Abstract

The utility model provides an external clamping type lifting appliance, which solves the technical problems that the existing lifting appliance is complex in structure and mainly adopts an internal expansion type, and mainly comprises the following components: the lifting hook comprises a lifting hook shaft, a movable seat, a spring, a connecting rod and a clamping jaw. The movable seat comprises a first movable seat and a second movable seat, a through hole is formed in the center of the movable seat, and the lower portion of the hook shaft sequentially penetrates through the through holes of the first movable seat and the second movable seat to form a floating connection structure. The clamping jaws are uniformly distributed along the circumferential direction of the movable seat, the upper part of each clamping jaw is hinged with the first movable seat, and the middle part of each clamping jaw is hinged with the second movable seat through a connecting rod; a spring is arranged between the two movable seats. The utility model can hoist different types of workpieces through the external clamping design, has simple connection structure of each part and strong bearing capacity, simplifies hoisting operation by combining the floating design of the movable seat, improves hoisting efficiency, and can be widely applied to the technical field of hoists.

Description

Outer formula hoist that presss from both sides

Technical Field

The utility model relates to the technical field of lifting appliance design, in particular to an external clamping type lifting appliance.

Background

The lifting appliance is often used as an important tool for transferring goods and members in a plurality of large fields such as machining, engineering construction and the like, and needs to have certain convenient operation capability, especially in the process of carrying large and medium members. The traditional design of a single hook and an elastic limiting mechanism cannot well meet the hoisting requirements of each type of workpieces, such as a flat plate member, a disc or a cylindrical member, and in the hoisting process of the traditional lifting hook, the traditional lifting hook needs to be bound and fixed in advance or an auxiliary clamp needs to be added; therefore, the efficiency is affected, and meanwhile, safety accidents can be caused by carelessness in the treatment of large components. Therefore, various technicians design a large number of derived nonstandard lifting appliances aiming at different scenes.

For example, chinese patent CN210480598U discloses a lifting claw for wheel-shell type workpieces, which comprises a connecting seat and two clamping arms; the clamping arm is rotationally connected with the connecting seat; the two clamping arms are oppositely arranged; the upper ends of the two clamping arms are connected through a spring; the lower end of the clamping arm is provided with a supporting plate; the top of the connecting seat is provided with a lifting hook. According to the technical scheme, the opposite side clamping structure is adopted, the wheel-shaped workpiece is stably clamped through the bottom large flat plate, but the clamping operation is influenced by the spring between the two clamping arms through structural analysis, so that the convenient operation capacity required by the lifting appliance cannot be embodied.

For another example, chinese patents CN204778365U and CN209758849U both disclose an internal expanding hanger with a substantially consistent structure, which includes a first clamp seat and a connecting rod, wherein one end of the connecting rod is fixedly provided with a limiting block, and the other end of the connecting rod passes through the first clamp seat and is in threaded connection with a limiting nut; the middle part of the hoisting claw is rotationally connected with the first clamp seat, so that the diameter of a circle where a lifting hook of the hoisting claw is located is increased, and the hoisting claw is clamped in the flywheel hole, and the flywheel is fixed. According to the technical scheme, the clamping jaw can fix the workpiece in a self-adjusting mode in the hoisting process through the connecting rod mechanism. Although this design has adopted linkage structure to solve the inconvenient technical problem of operation to a certain extent, its clamping jaw structure is complicated, and the connection point is many, and only possesses the work piece that can hang the space to inside.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provides the lifting appliance which is simple in structure and convenient to operate and can be used for lifting a workpiece from the outside.

Therefore, the utility model provides an external clamping type lifting appliance, which mainly comprises: the lifting hook comprises a lifting hook shaft, a movable seat, a spring, a connecting rod and a clamping jaw;

the upper part of the hook shaft is of a hook structure or an annular structure, the lower part of the hook shaft is of a columnar structure, and the columnar structure is provided with a limiting structure; the movable seat comprises a first movable seat and a second movable seat, a through hole is formed in the center of the movable seat, and the lower part of the hook shaft sequentially penetrates through the through holes of the first movable seat and the second movable seat; the spring is arranged between the first movable seat and the second movable seat and sleeved on the cylindrical structure of the hook shaft; the first movable seat and the second movable seat form a floating connection structure with the hook shaft;

the clamping jaws are multiple in number and are uniformly distributed along the circumferential direction of the movable seat; the upper part of each clamping jaw is hinged with the first movable seat; every the clamping jaw corresponds and is equipped with one the connecting rod, the one end of connecting rod with the middle part of clamping jaw is articulated, the other end with the second sliding seat is articulated.

Preferably, the lifting hook shaft is of an integrated structure, the upper part of the lifting hook shaft is in a lifting hook shape, and the lower part of the lifting hook shaft is in a cylindrical structure; the through hole of the movable seat is of a circular hole structure and is in sliding fit with the lower part of the hook shaft.

Preferably, the cylindrical structure is a stepped shaft, and the diameter of the upper part is larger than that of the lower part; an external thread is processed at the shaft shoulder of the stepped shaft; the limiting structure comprises an upper limiting structure and a lower limiting structure; the upper limiting structure is a nut and is arranged at the shaft shoulder in a threaded fit manner; the lower limiting structure is in a plug shape and is arranged on the lower end face of the stepped shaft.

Preferably, the movable seat main body is a hollow shaft, and a plurality of groups of support lugs are uniformly distributed on the outer side surface along the circumferential direction.

Preferably, the clamping jaw is in a strip-shaped structure, and the upper part of the clamping jaw is bent towards the direction of the hook shaft; the upper end of the clamping jaw is provided with a through hole and is rotationally connected with the support lug of the first movable seat through a pin shaft; the middle part of the clamping jaw is provided with a through hole and is rotatably connected with one end of the connecting rod through a pin shaft, and the other end of the connecting rod is rotatably connected with the support lug of the second movable seat through a pin shaft.

Preferably, the lower part of the clamping jaw is further provided with a hanging plate, the vertical section of the hanging plate is triangular, the upper end face of the hanging plate is fixedly connected with the clamping jaw, and the slope surface of the lower part faces the hook shaft.

The utility model provides an external clamping type lifting appliance, which has the following beneficial effects:

(1) through the design of outer clamp formula, can hoist different kinds of work pieces, and each part connection structure is simple, makes its bearing capacity strong, can deal with the hoist and mount operation of heavy weight.

(2) The lifting operation is simplified through the floating design of the movable seat, and the lifting efficiency is improved.

Drawings

FIG. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a perspective view of the present invention in embodiment 1;

FIG. 3 is a schematic view of the working principle of embodiment 1 of the present invention;

FIG. 4 is a perspective view of the present invention in embodiment 2;

the labels in the figure are: 1. the lifting hook comprises a lifting hook shaft, 2 parts of a movable seat, 3 parts of a clamping jaw, 4 parts of a connecting rod, 5 parts of a hanging plate, 6 parts of a spring and 7 parts of a pin shaft.

Detailed Description

The utility model is further described below in conjunction with the drawings and the specific embodiments to assist in understanding the contents of the utility model. The method used in the utility model is a conventional method if no special provisions are made; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.

Example 1

As shown in fig. 1, an external clip type hanger mainly includes: the lifting hook comprises a lifting hook shaft 1, a movable seat 2, a spring 6, a connecting rod 4 and a clamping jaw 3.

The preferred formula structure of lifting hook axle 1 is the integral type structure, and upper portion is the lifting hook form, and the lower part is cylindrical structure. Specifically, the cylindrical structure is a stepped shaft, and the upper diameter is larger than the lower diameter. The shaft shoulder of the stepped shaft is provided with external threads. And the stepped shaft is also provided with a limiting structure which comprises an upper limiting structure and a lower limiting structure. Wherein, go up limit structure and be the internal thread nut, install in shaft shoulder department through the screw-thread fit. The lower limiting structure is arranged on the lower end face of the stepped shaft in a plug shape.

The movable seat 2 comprises a first movable seat and a second movable seat, wherein the first movable seat is arranged close to the upper part, and the second movable seat is arranged close to the lower part. Each movable seat 2 has the same structure, a through hole is formed in the center of each movable seat, and the lower part of the hook shaft 1 sequentially penetrates through the through holes of the first movable seat and the second movable seat; preferably, the through hole of the movable seat is of a circular hole structure and is in sliding fit with the stepped shaft.

According to the scene needs, the lower part of the hook shaft 1 can be designed to be a prism structure, so that the relative rotation between the upper movable seat 2 and the lower movable seat 2 caused by factors such as external or center-of-gravity shift in the hoisting of large components can be prevented (theoretically, the two movable seats 2 are sleeved on the hook shaft 1 and should rotate synchronously, but actually, the relative rotation can occur due to different stresses and different circumferential resistances), and the clamping jaw 3 is damaged in a twisting manner. The design of the present embodiment is not specifically limited, which is specifically designed according to actual requirements.

A spring 6 is arranged between the first movable seat and the second movable seat, and the spring 6 is sleeved on the stepped shaft. The first movable seat, the second movable seat and the lifting hook shaft form a floating connection structure.

Preferably, the main body of the movable seat 2 is a hollow shaft, and since the hanger is used for hoisting the disc-shaped member in the embodiment, as shown in fig. 2, three sets of support lugs are uniformly distributed on the outer side surface of the movable seat 2 along the circumferential direction for hinging the clamping jaws 3.

Three clamping jaws 3 are correspondingly arranged and are uniformly distributed along the circumferential direction of the movable seat; preferably, the clamping jaw 3 is in an elongated structure, and the upper part is bent towards the direction of the axis of the hook shaft 1. The upper end of the clamping jaw 3 is provided with a through hole and is rotationally connected with a support lug of the first movable seat through a pin shaft 7. Each clamping jaw 3 is correspondingly provided with a connecting rod 4 for forming a linkage mechanism. Specifically, the middle part of the clamping jaw 3 protrudes inwards to form a flange, is provided with a through hole, and is rotatably connected with one end of the connecting rod 4 through a pin shaft 7 to form a hinge structure; the other end of the connecting rod 4 is rotatably connected with a support lug of the second movable seat through a pin shaft 7, and a hinge structure is also formed.

Preferably, the lower part of the clamping jaw 3 is further provided with a hanging plate 5, specifically, as shown in the figure, the vertical section of the hanging plate 5 is in a right triangle shape, the upper end face (the plane where the right-angle side is located) is fixedly connected with the clamping jaw, and the slope surface of the lower part faces the hook shaft.

Working process

At first, the lifting hook of the lifting appliance is connected with the lifting device, the lifting hook is placed to the position of a workpiece, the movement in the vertical direction is stopped after the lower limiting structure of the lifting hook shaft 1 contacts the workpiece, further, as shown by an arrow in fig. 3, the clamping jaw 3 is pressed downwards, under the action of the connecting rod 4, the tail end of the clamping jaw 3 moves inwards as shown by the arrow, the hanging plate 5 is clamped into the hanging position, wherein the slope surface of the hanging plate 5 plays a guiding role, and the clamping jaw 3 is prevented from being clamped on the upper end surface or the side surface of the workpiece in the placing process. Then the lifting hook shaft 1 is lifted up, and the clamping jaw 3 firmly clamps the workpiece to finish the hanging work.

After the lifting is carried to the designated position, the lifting hook shaft 1 is placed together with the workpiece, after the workpiece is contacted with the ground, the distance between the first movable seat and the second movable seat is increased by rebounding under the action of the spring 6, so that the connecting rod 4 is close to the horizontal position, the clamping jaw 3 is pushed to move outwards to leave the lifting position, and then the lifting hook shaft 1 is lifted to separate the lifting appliance from the workpiece.

Example 2

In the embodiment, on the basis of the above embodiment, the number of the clamping jaws 3 and the number of the connecting rods 4 are respectively four, and four groups of support lugs of the movable seat 2 are correspondingly added; as shown in fig. 4, the clamping jaws 3 are distributed in a cross shape, and accordingly, can be used for hoisting square workpieces. The embodiment is only used for illustration, and the specific number setting of the clamping jaws 3 can be designed according to the actual scene requirements, and is not limited in particular.

In the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being 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 invention.

However, the above embodiments are only examples of the present invention, and the scope of the present invention should not be limited thereby, and the substitution of equivalent elements or the equivalent changes and modifications made according to the scope of the present invention should be covered by the claims.

Claims

1. An externally-clamped hanger, comprising: the lifting hook comprises a lifting hook shaft, a movable seat, a spring, a connecting rod and a clamping jaw;

2. The externally-clamped hanger according to claim 1, wherein the hanger shaft is of an integral structure, the upper part is in a shape of a hanger hook, and the lower part is in a cylindrical structure; the through hole of the movable seat is of a circular hole structure and is in sliding fit with the lower part of the hook shaft.

3. The externally-clamped hanger of claim 2, wherein said cylindrical structure is a stepped shaft, and the upper diameter is greater than the lower diameter; an external thread is processed at the shaft shoulder of the stepped shaft; the limiting structure comprises an upper limiting structure and a lower limiting structure; the upper limiting structure is a nut and is arranged at the shaft shoulder in a threaded fit manner; the lower limiting structure is in a plug shape and is arranged on the lower end face of the stepped shaft.

4. The externally-clamped hanger according to claim 2 or 3, wherein the movable seat body is a hollow shaft, and a plurality of groups of lugs are uniformly distributed on the outer side surface along the circumferential direction.

5. The externally-clamped hanger of claim 4, wherein said clamping jaws are in an elongated configuration, and the upper portions thereof are bent toward said hanger axis; the upper end of the clamping jaw is provided with a through hole and is rotationally connected with the support lug of the first movable seat through a pin shaft; the middle part of the clamping jaw is provided with a through hole and is rotatably connected with one end of the connecting rod through a pin shaft, and the other end of the connecting rod is rotatably connected with the support lug of the second movable seat through a pin shaft.

6. The externally-clamped lifting appliance according to claim 1, wherein a hanging plate is further arranged at the lower portion of the clamping jaw, the vertical section of the hanging plate is triangular, the upper end face of the hanging plate is fixedly connected with the clamping jaw, and the slope of the lower portion of the hanging plate faces the lifting hook shaft.