Automatic grabbing and releasing mechanism

Abstract

The utility model relates to the technical field of grabbing hooks, in particular to an automatic grabbing and releasing mechanism which comprises an objective table, a top table located above the objective table, a lifting rod capable of ascending and descending in the top table, a self-retracting and releasing grabbing mechanism installed on the bottom side of the lifting rod, and a protruding T-shaped grabbing cap arranged in the middle of the objective table. When the self-retracting and releasing grabbing mechanism moves downwards and gets close, the clamping opening is closed to grab the T-shaped grabbing cap, and when the lifting rod is lifted to drive the objective table to move upwards to make contact with the top wall of the top table, the self-retracting and releasing grabbing mechanism is pushed to release the clamping opening from the closed state to release the T-shaped grabbing cap. And the contact time of personnel and dangerous objects in the whole process is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of grab hooks, and particularly relates to an automatic grabbing and releasing mechanism. BACKGROUND

[0002] At present, there is no special device for the transfer and hoisting of various objects and articles, and all the work is completed by manual participation and cooperation between personnel and hoisting tools. This mode has the following shortcomings:

[0003] 1. Low work efficiency. In traditional hoisting and transfer work, personnel are involved throughout the process. Before hoisting, personnel need to connect the hoisted object with the hoisting tool (crane, sling, etc.) (hang the hoisted object on the hook of the hoisting tool). After the object is hoisted to the destination area and placed, personnel need to manually separate the object from the hook. The personnel involved are more, the degree of automation is low, and the work efficiency is low.

[0004] 2. Many unsafe factors. Since personnel are involved throughout the process, when hoisting and transferring some high-temperature, toxic and harmful objects, the more the personnel involved, the more the threat to personnel. Personnel cannot be effectively isolated from the entire process, and unsafe factors are increased.

[0005] 3. For scattered objects or other irregular objects that are not conducive to binding, hoisting is required. The object needs to be packed or bound, and special tools need to be used for assistance. The use method and effect are limited, and some related things need to be prepared in advance. Otherwise, the hoisting process will be affected. INVENTION CONTENTS

[0006] (I) Technical problem

[0007] The utility model aims to solve at least the problem of long contact time between personnel and dangerous objects in the process of grabbing, transferring and releasing objects in the prior art.

[0008] (II) Technical content

[0009] The present scheme provides an automatic grabbing and releasing mechanism, which is achieved by the following specific technical means: a carrier table, a top table located above the carrier table, a lifting rod in the top table that can be lifted, a self-retracting grabbing mechanism installed at the bottom side of the lifting rod, and a T-shaped grab cap with a protrusion arranged in the middle of the carrier table.

[0010] When the self-retracting grabbing mechanism moves down and approaches, the clamping opening is closed to grab the T-shaped grab cap. When the lifting rod is lifted to drive the carrier table to move up and contact the top wall of the top table, the self-retracting grabbing mechanism is pushed to release the clamping opening state and release the T-shaped grab cap.

[0011] Preferably, the self-retracting grabbing mechanism comprises two groups of grabbing hooks symmetrically hingedly mounted on the bottom mounting seat of the lifting rod and a reset locking spring connected between the two groups of grabbing hooks, the bottom ends of the two groups of grabbing hooks form a clamping opening, the clamping opening is opened by the enlarged top of the T-shaped grab cap when moving downward, and then moves downward to the middle and lower part of the T-shaped grab cap and then shrinks, and the T-shaped grab cap is grabbed.

[0012] Meanwhile, the top end and the tail end of the grabbing hook are inclined inwardly, so that when the grabbing hook moves upward and contacts the top wall of the top platform, the grabbing hook can be smoothly pressed by the top wall of the top platform to further incline inwardly, thereby compressing the reset locking spring and opening the clamping opening.

[0013] Preferably, the bottom end of the grabbing hook is fixed with a protruding tooth, the bottom side of the protruding tooth is an inclined surface inclined inwardly and upwardly, and the protruding tooth is located in the clamping opening.

[0014] Preferably, the side edge of the top surface of the T-shaped grab cap is chamfered.

[0015] Preferably, fences of different heights can be arranged around the object table according to needs.

[0016] (Three) technical effects

[0017] The above structure makes the present scheme have the following beneficial effects:

[0018] 1. The automatic grabbing and releasing mechanism can realize rapid, accurate, automatic and safe loading and transfer of various objects and articles, and can be applied in the daily transfer and transfer of dangerous articles. During work, the articles are placed on the object table by manual operation, and subsequent grabbing, transferring and releasing can be realized automatically, reducing the contact time between personnel and dangerous articles in the whole process.

[0019] 2. Meanwhile, unmanned operation can be realized in the processes of lifting, transferring and releasing, which further reduces the working intensity of personnel, and most importantly, greatly reduces the probability of unsafe factors and unsafe events, which is more conducive to safety production and improves work efficiency. DRAWINGS

[0020] The drawings are used to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, to explain the present application, and do not constitute a limitation on the present application. In the drawings:

[0021] Figure 1 It is a schematic diagram of the overall structure of the present scheme.

[0022] Wherein, 1, the object table, 11, T-shaped cap, 2, the top table, 21, the tapered shrinkage, 3, the lifting rod, 31, the mounting seat, 4, the self-retracting grabbing mechanism, 41, the hook, 42, the tooth, 43, the reset locking spring, 44, the pin shaft, 5, the fence. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0024] Please refer to Figure 1 , the automatic grabbing and releasing mechanism, comprising an object table 1 and a top table 2 located above the object table 1, a liftable lifting rod 3 is arranged on the top table 2, the lifting rod 3 is connected with a lifting device, and a self-retracting grabbing mechanism 4 is arranged on the bottom side of the lifting rod 3; a protruding T-shaped cap 11 is fixed on the top of the object table 1.

[0025] When the self-retracting grabbing mechanism 4 moves downwards and approaches, the clamping opening is closed to grab the T-shaped cap 11; when the object table 1 moves upwards and contacts the top wall of the top table 2, the self-retracting grabbing mechanism 4 is pushed to release the clamping opening to release the T-shaped cap 11.

[0026] Please refer to Figure 1 , the automatic grabbing and releasing mechanism, the self-retracting grabbing mechanism 4 comprises two groups of hooks 41 symmetrically hingedly arranged on the mounting seat 31 at the bottom of the lifting rod 3 and a reset locking spring 43 connected between the two groups of hooks 41.

[0027] The middle part of the hook 41 is rotationally connected with the mounting seat 31 through the pin shaft 44, and the bottom ends of the two groups of hooks 41 form a clamping opening; when the clamping opening moves downwards, the clamping opening is opened by the enlarged top part of the T-shaped cap 11, then moves downwards to the middle and lower part of the T-shaped cap 11 and is reduced, and the T-shaped cap 11 is grabbed.

[0028] Meanwhile, the top end and the tail end of the hook 41 are inclined towards the inside, so that the middle and upper parts of the two groups of hooks 41 form a trapezoid, and a tapered shrinkage 21 is arranged on the top of the top table 2; when the lifting rod 3 is pulled upwards, the tail end of the hook 41 is inserted into the tapered shrinkage 21; as the tail end is inserted from the large end at the bottom side of the tapered shrinkage 21 to the small end at the top side, the tapered shrinkage 21 extrudes the tail ends of the two groups of hooks 41 to move close to each other, so that the clamping opening is opened, and the T-shaped cap 11 is separated from the opened clamping opening.

[0029] Please refer to Figure 1The bottom end of the claw 41 is fixed with a protrusion 42, and the bottom side of the protrusion 42 is an inclined surface inclined to the inside and upward direction.

[0030] The distance between the two groups of protrusions 42 in the initial state is less than the width of the top of the T-shaped grab cap 11. When the clamp is lowered, the bottom side of the protrusion 42 is in contact with the side of the top of the T-shaped grab cap 11, and as the protrusion 42 continues to move downward, the two groups of protrusions 42 are pushed away from each other. When the protrusion 42 moves to the middle and lower part of the T-shaped grab cap 11, the width of the middle and lower part of the T-shaped grab cap 11 is less than the width of the enlarged part at the top of the T-shaped grab cap 11. Therefore, when the clamp is raised, the top flat surface of the protrusion 42 is separated from the protruding flat surface at the bottom of the enlarged part of the top of the T-shaped grab cap 11, so that the object table 1 can be lifted.

[0031] As a preferred embodiment, the top side of the T-shaped grab cap 11 is provided with a chamfer, which is in contact with the bottom side of the protrusion 42, facilitating automatic grabbing of the claw 41. The number of T-shaped grab caps 11 can be adjusted according to the weight of the hoisted object to ensure stable grabbing and lifting during use.

[0032] The bottom side of the protrusion 42 is adapted to the chamfer on the T-shaped grab cap 11 of the object table 1.

[0033] Please refer to Figure 1 The automatic grabbing and releasing mechanism can be provided with a fence 5 around the object table 1 at different heights as needed, facilitating the transportation and transfer of scattered hoisted objects.

[0034] When the claw 41 falls above the T-shaped grab cap 11, the chamfer of the T-shaped grab cap 11 will open the bottom clamp of the claw 41 under the action of external force, and the T-shaped grab cap 11 will enter the inside of the clamp of the claw 41, i.e. the protrusion 42 moves to the middle and lower part of the T-shaped grab cap 11. At this time, the claw 41 is reset under the action of the reset locking spring 43, so that the protrusion 42 on the claw 41 tightly grabs the T-shaped grab cap 11. At this time, the lifting rod 3 will rise under the action of external force, lifting the claw 41 and the object table 1. When a certain height is reached, the tail of the lifting rod 3 will enter the tapered contraction opening 21, and the lifting rod 3 can smoothly pass through the tapered contraction opening 21. The tail of the claw 41 will enter the tapered contraction opening 21 before the mounting seat 31, and the tail of the claw 41 will be squeezed by the tapered contraction opening 21 to move closer to each other, so that the clamp is gradually opened, thereby releasing the object table 1, achieving the purpose of automatic grabbing and releasing.

[0035] In actual work, the height of the tapered contraction opening 21 can be flexibly set according to specific conditions, and can be applied to various hoisting scenes.

[0036] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic grasping, releasing mechanism characterized by: The device comprises a carrier table (1), a top table (2) above the carrier table (1), a lifting rod (3) in the top table (2), and a self-retractable grabbing mechanism (4) at the bottom side of the lifting rod (3). A T-shaped grabbing cap (11) is fixed on the top of the carrier table (1), and the self-retractable grabbing mechanism (4) is used to automatically grab the T-shaped grabbing cap (11) when it moves down and automatically release the T-shaped grabbing cap (11) when it rises to the position.

2. An automatic grasping and releasing mechanism according to claim 1, characterised in that: The self-retractable grabbing mechanism (4) comprises two groups of grabbing hooks (41) symmetrically hinged on the bottom mounting seat (31) of the lifting rod (3) and a reset locking spring (43) connected between the two groups of grabbing hooks (41). The bottom head end of the two groups of grabbing hooks (41) forms a clamping opening, and the top tail end is inclined inward, and the reset locking spring (43) uses elastic force to contract the clamping opening. When the clamping opening of the grabbing hook (41) is opened by the T-shaped grabbing cap (11) after it is lifted down, it is grabbed in the lower part of the T-shaped grabbing cap (11), and when the tail end of the grabbing hook (41) is pushed by the top wall of the top table (2), the clamping opening is opened.

3. An automatic grasping and releasing mechanism according to claim 2, wherein: The bottom end of the grabbing hook (41) is fixed with a protruding tooth (42), and the bottom side of the protruding tooth (42) is inclined inward and upward, and when the clamping opening is lifted down, the bottom side of the protruding tooth (42) first contacts the top side of the T-shaped grabbing cap (11).

4. An automatic grasping and releasing mechanism according to claim 3, wherein: The top surface of the T-shaped grabbing cap (11) is chamfered.

5. An automatic grasping and releasing mechanism according to claim 4, wherein: The top surface of the protruding tooth (42) and the bottom protruding surface of the enlarged part of the T-shaped grabbing cap (11) are both flat surfaces.

6. An automatic grasping and releasing mechanism according to claim 1, wherein: A fence (5) can be arranged around the carrier table (1).

7. An automatic grasping and releasing mechanism according to claim 1, wherein: The carrier table (1) is made of high-strength steel plate.

Images