Inner hole hoisting device

Abstract

The utility model discloses an inner hole hoisting device which comprises a main body frame, a sliding shaft is arranged in the main body frame, and the sliding shaft can slide up and down in the main body frame; a plurality of movable chucks are mounted at one end of the sliding shaft, and a self-locking clamp is arranged at the other end of the sliding shaft; the self-locking clamp drives the sliding shaft to slide up and down, and therefore the locking state and the unlocking state of the multiple movable chucks are switched. The self-locking clamp drives the sliding shaft to slide upwards, and at the moment, the multiple movable chucks gradually tend to be vertical and are switched into an unlocking state; the self-locking clamp drives the sliding shaft to slide downwards, and at the moment, the multiple movable chucks gradually tend to be horizontal and are switched into a locking state. Compared with a traditional lifting hook, a lifting ring or a magnetic crane, the inner hole lifting device provides a new lifting mode for a workpiece with a hole, the inner hole of the workpiece is used for lifting, the clamp in the inner hole lifting device further has a self-locking function, and the lifting safety is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a lifting appliance technical field, especially in a hole hoist device. BACKGROUND

[0002] The crane is a kind of hoisting and carrying machinery widely used in port, workshop, power, site etc.;Its function is in hoisting equipment, rescue, hoisting and rescue.

[0003] When lifting goods, the most commonly used lifting appliance is to use hook, lifting ring, magnetic lifting etc.

[0004] But when the workpiece to be lifted does not support the installation hook, lifting ring, or material non-magnetic can not use magnetic lifting. Generally, it can be considered to use the workpiece of the workpiece fixture hoisting workpiece. But when the workpiece is larger, the work fixture needs to be very large. INVENTION CONTENTS

[0005] The utility model aims at providing a kind of inner hole hoist device, hoist using the inner hole of workpiece, provide a new lifting appliance structure for hoisting operation.

[0006] To solve the above technical problems, the utility model provides a kind of inner hole hoist device, including main body frame, the main body frame is equipped with sliding shaft, and the sliding shaft can slide up and down in the main body frame;

[0007] The sliding shaft one end is equipped with multiple movable chucks, and the other end is equipped with self-locking clamp;

[0008] The self-locking clamp drives the sliding shaft to slide up and down, to switch the locking and unlocking of multiple movable chucks two states;

[0009] The self-locking clamp drives the sliding shaft to slide up, multiple movable chucks gradually tend to vertical, switch into unlocking state;

[0010] The self-locking clamp drives the sliding shaft to slide down, multiple movable chucks gradually tend to horizontal, switch into locking state.

[0011] Preferably, multiple movable chucks are evenly arranged around the central axis of the sliding shaft.

[0012] Preferably, the movable chuck includes clamp block and first connecting plate, the clamp block, the first connecting plate, the main body frame and the sliding shaft are sequentially rotationally connected, form crank connecting rod structure, the up and down sliding of the sliding shaft is converted into the rotary motion of the clamp block.

[0013] Preferably, one end of the clamping block is rotatably connected with the main body frame through a pin shaft, the other end is rotatably connected with the first connecting plate through a pin shaft, and the other end of the first connecting plate is rotatably connected with the lower end of the sliding shaft through a pin shaft;

[0014] When the sliding shaft slides upward, the first connecting plate drives the clamping block to rotate inward until the switching is in the unlocked state.

[0015] When the sliding shaft slides downward, the first connecting plate drives the clamping block to rotate outward until the switching is in the locked state.

[0016] Preferably, the self-locking clamp comprises a push-pull rod, a clamp handle and a second connecting plate; the lower end of the push-pull rod is connected with the sliding shaft through a shaft coupling, and the sliding shaft slides up and down under the action of the push-pull rod.

[0017] Preferably, the push-pull rod, the second connecting plate and the handle head of the clamp handle are rotatably connected through pin shafts, forming a crank connecting rod structure, and converting the rotary motion of the clamp handle into the up-and-down sliding motion of the push-pull rod.

[0018] Preferably, when the clamp handle is pulled downward under the action of external force, the push-pull rod drives the sliding shaft to move downward, and at the same time, the first connecting plate drives the clamping block to rotate outward until being horizontal, and hooking the inner hole of the workpiece.

[0019] Preferably, when the clamp handle is pulled to the lower limit position, the weight of the workpiece forms a downward pressure on the clamping block, forcing the sliding shaft and the push-pull rod to move upward, and the upward force of the push-pull rod is transmitted to the second connecting plate, and the direction of the force is on the left side of the handle head, which will force the clamp handle to continuously move downward, however, the clamp handle is already at the lower limit position at this time, so the clamp handle is continuously subjected to the downward pressure during hoisting, and is always in the self-locking state.

[0020] Preferably, the upper end of the main body frame is provided with a lifting ring for external hoisting equipment.

[0021] Compared with the prior art, the utility model has the beneficial effects that:

[0022] Compared with the traditional lifting hook, lifting ring or magnetic lifting, the inner hole hoisting device provides a new hoisting mode for the workpiece with holes, the hoisting device utilizes the inner hole of the workpiece for hoisting, and the clamp in the hoisting device also has a self-locking function, further improving the safety of hoisting. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 is a structural schematic view of the inner hole hoisting device provided by the utility model;

[0024] Figure 2 is a sectional view of the inner hole hoisting device provided by the utility model;

[0025] Figure 3 is a structure schematic view of the inner hole hoisting device in the unlocked state;

[0026] Figure 4 is a structure schematic view of the inner hole hoisting device in the locked state;

[0027] Figure 5 is the self-locking state view of the self-locking clamp provided by the utility model.

[0028] In the figure: 1, main body frame; 2, sliding shaft; 3, movable chuck; 301, clamping block; 302, first connecting plate; 4, self-locking clamp; 401, push-pull rod; 402, clamp handle; 403, second connecting plate; 404, handle head; 5, shaft coupling; 6, lifting ring; 10, workpiece. DETAILED DESCRIPTION

[0029] The utility model will be further explained in detail in combination with the drawings and specific embodiments. The advantages and features of the utility model will be more clear according to the following description and claims. It should be noted that the drawings are all very simplified and use non-precise scale, only for the purpose of convenient and clear auxiliary description of the utility model embodiments.

[0030] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, only for the purpose of facilitating the description of the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, structure and operation, therefore, it cannot be understood as the limitation of the utility model. In addition, the terms "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more features. In the description of the utility model, unless otherwise specified, the meaning of "multiple" is two or more.

[0031] In the description of the utility model, it is necessary to explain, unless another explicit provision and limitation, term "installation", "link", "connection" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected, can be mechanical connection, also can be electrical connection, can be direct connection, also can indirectly connect through intermediate medium, can be two element internal communication. For ordinary skilled person in the art, the above-mentioned term can be understood as the specific meaning in the utility model through specific circumstances. Embodiment

[0032] The utility model provides a hole hoisting device, please refer to Figure 1 And Figure 2 , including main body frame 1, be equipped with sliding shaft 2 in main body frame 1, and sliding shaft 2 can slide up and down in main body frame 1, sliding shaft 2 one end is equipped with multiple movable chuck 3, and the other end is equipped with self-locking clamp 4, self-locking clamp 4 drives sliding shaft 2 to slide up and down, to switch the locking and unlocking two kinds of state of multiple movable chuck 3.

[0033] Self-locking clamp 4 drives sliding shaft 2 to slide up, multiple movable chuck 3 gradually tend to vertical at this time, switch into unlocking state, self-locking clamp 4 drives sliding shaft 2 to slide down, multiple movable chuck 3 gradually tend to horizontal at this time, switch into locking state.

[0034] In this embodiment, multiple movable chuck 3 is evenly arranged around the central axis of sliding shaft 2, and moves synchronously with sliding shaft 2.

[0035] Specifically, movable chuck 3 includes clamp block 301 and first connecting plate 302, clamp block 301, first connecting plate 302, main body frame 1 and sliding shaft 2 are sequentially rotationally connected, forming a crank and connecting rod structure, converting the up and down sliding of sliding shaft 2 into the rotary motion of clamp block 301.

[0036] Further, please refer to Figure 3 Clamp block 301 is rotationally connected to main body frame 1 by a pin at one end, and is rotationally connected to first connecting plate 302 by a pin at the other end, and the other end of first connecting plate 302 is rotationally connected to the lower end of sliding shaft 2 by a pin.

[0037] When sliding shaft 2 slides up, first connecting plate 302 drives clamp block 301 to rotate inward until it switches to the unlocked state.

[0038] When sliding shaft 2 slides down, first connecting plate 302 drives clamp block 301 to rotate outward until it switches to the locked state.

[0039] Specifically, please continue to refer to Figure 3 , the self-locking clamp 4 includes a push-pull rod 401, a clamp handle 402 and a second connecting plate 403; the lower end of the push-pull rod 401 is connected with the sliding shaft 2 through a shaft coupling 5, and the sliding shaft 2 slides up and down under the action of the push-pull rod 401.

[0040] Further, please refer to Figure 4 , the push-pull rod 401, the second connecting plate 403 and the handle head 404 of the clamp handle 402 are rotationally connected through a pin shaft, forming a crank linkage structure, which converts the rotary motion of the clamp handle 402 into the up-and-down sliding motion of the push-pull rod 401; when the clamp handle 402 is pulled downward under the action of an external force, the push-pull rod 401 drives the sliding shaft 2 to move downward, and at the same time, the first connecting plate 302 drives the clamp block 301 to rotate outward until it is horizontal, hooking the inner hole of the workpiece 10.

[0041] Further, please refer to Figure 5 When the clamp handle 402 is pulled to the lower limit, the weight of the workpiece 10 forms a downward pressure on the clamp block 301, forcing the sliding shaft 2 and the push-pull rod 401 to move upward, and the upward force of the push-pull rod 401 is transmitted to the second connecting plate 403, which is on the left side of the handle head 404, forcing the clamp handle 402 to continue to move downward, but at this time the clamp handle 402 has reached the lower limit, so the clamp handle 402 is continuously subjected to downward pressure during hoisting and is always in a self-locking state.

[0042] Specifically, please continue to refer to Figure 1 and Figure 2 , the upper end of the main frame 1 is also provided with a lifting eye 6 for hoisting by external lifting equipment.

[0043] Compared with the traditional lifting hook, lifting eye or magnetic lifting, the inner hole hoisting device provides a new hoisting method for workpieces with holes. The hoisting device uses the inner hole of the workpiece for hoisting, and the clamp therein also has a self-locking function, further improving the safety of hoisting.

[0044] The above description is only a description of the preferred embodiments of the present application, and does not limit the scope of the present application in any way. Any modification or modification made by a person skilled in the art based on the above disclosure is within the scope of protection of the claims.

Claims

1. An internal bore hoisting device, characterized in that, Including the main body frame (1), the sliding shaft (2) is arranged in the main body frame (1), and the sliding shaft (2) can slide up and down in the main body frame (1); The sliding shaft (2) is installed with a plurality of movable chucks (3) at one end, and is provided with a self-locking clamp (4) at the other end; The self-locking clamp (4) drives the sliding shaft (2) to slide up and down, so that the locking and unlocking states of the plurality of movable chucks (3) are switched; The self-locking clamp (4) drives the sliding shaft (2) to slide upwards, at this time, the plurality of movable chucks (3) gradually tend to be vertical, and the unlocking state is switched. The self-locking clamp (4) drives the sliding shaft (2) to slide downwards, at this time, the plurality of movable chucks (3) gradually tend to be horizontal, and the locking state is switched.

2. A bore hoisting device as claimed in claim 1, characterised in that The plurality of movable chucks (3) are uniformly arranged around the central axis of the sliding shaft (2).

3. A bore hoisting device as claimed in claim 2, characterised in that, The movable chuck (3) includes a clamping block (301) and a first connecting plate (302), the clamping block (301), the first connecting plate (302), the main body frame (1) and the sliding shaft (2) are sequentially rotationally connected to form a crank connecting rod structure, and the up and down sliding of the sliding shaft (2) is converted into the rotary motion of the clamping block (301).

4. A bore hoisting device as claimed in claim 3, characterised in that, One end of the clamping block (301) is rotationally connected with the main body frame (1) through a pin shaft, the other end is rotationally connected with the first connecting plate (302) through a pin shaft, and the other end of the first connecting plate (302) is rotationally connected with the lower end of the sliding shaft (2) through a pin shaft; When the sliding shaft (2) slides upwards, the first connecting plate (302) drives the clamping block (301) to rotate inward until the unlocking state is switched; When the sliding shaft (2) slides downwards, the first connecting plate (302) drives the clamping block (301) to rotate outward until the locking state is switched.

5. A bore hoisting device as claimed in claim 4, wherein, The self-locking clamp (4) includes a push-pull rod (401), a clamp handle (402) and a second connecting plate (403); the lower end of the push-pull rod (401) is connected with the sliding shaft (2) through a shaft coupling (5), and the sliding shaft (2) slides up and down under the action of the push-pull rod (401).

6. A bore hoisting device as claimed in claim 5, wherein The push-pull rod (401), the second connecting plate (403) and the handle head (404) of the clamp handle (402) are rotationally connected through pin shafts, forming a crank connecting rod structure, and the rotary motion of the clamp handle (402) is converted into the up and down sliding of the push-pull rod (401).

7. A bore hoisting device as claimed in claim 6, wherein When the clamp handle (402) is pulled downward under the action of external force, the push-pull rod (401) drives the sliding shaft (2) to move downwards, at the same time, the first connecting plate (302) drives the clamping block (301) to rotate outward until it is horizontal, and hooks the inner hole of the workpiece (10).

8. A bore hoisting arrangement as claimed in claim 7, characterised in that, When the clamp handle (402) is pulled to the lower limit, the weight of the workpiece (10) forms a downward pressure on the clamp block (301), forcing the sliding shaft (2) and the push-pull rod (401) to move upward, and the upward force of the push-pull rod (401) is transmitted to the second connecting plate (403), the direction of the force is on the left side of the handle head (404), which will force the clamp handle (402) to continue to move downward, but at this time the clamp handle (402) has reached the lower limit, so the clamp handle (402) is continuously subjected to downward pressure during hoisting, and is always in a self-locking state.

9. A bore hoisting device as claimed in claim 1, characterised in that, The upper end of the main frame (1) is provided with a lifting ring (6) for external lifting equipment.

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