CN110902557A

CN110902557A - Adjustable lifting clamp

Info

Publication number: CN110902557A
Application number: CN201911226955.8A
Authority: CN
Inventors: 李素杰; 孙方跃; 申志宏; 徐晋; 王新宇
Original assignee: YIDONG CLUTCH CO Ltd CHANGCHUN
Current assignee: YIDONG CLUTCH CO Ltd CHANGCHUN
Priority date: 2019-12-04
Filing date: 2019-12-04
Publication date: 2020-03-24

Abstract

An adjustable hoisting clamp belongs to the field of mechanical auxiliary equipment. The invention aims to provide an adjustable hoisting clamp which can directly hoist cargoes without binding the cargoes. The upper end of a connecting plate is fixedly connected to the lower end of a suspender, the lower end of the connecting plate is connected to a hoisting head in a shaft mode, the hoisting head is inserted at the top end of a central shaft through threads, a ball guide sleeve and an outer sleeve are sequentially sleeved on the central shaft, and a locking ring is mounted on the central shaft at the lower end of the outer sleeve; the bottom end of the central shaft is fixedly provided with a claw arm fixing frame, and the tail end of the claw arm is connected to the claw arm fixing frame through a claw arm shaft. The invention is similar to the mode of holding objects by claws to grab the goods, so the goods do not need to be bound by ropes, the working procedures are saved, and the labor intensity of personnel is reduced.

Description

Adjustable lifting clamp

Technical Field

The invention belongs to the field of mechanical auxiliary equipment.

Background

The hoisting tool is a mechanical tool frequently used in daily production processes of existing industrial and mining enterprises, but the existing conventional hoisting tool basically adopts hoisting hoists, hoisting rigging, hoisting chain blocks and the like, and although the structures have many differences, the basic principle is that a structure with a hook is arranged at the bottom end of a metal chain. The hoisting device needs to bind some mechanisms which are convenient for the hook to hang, such as ropes, on the hoisted goods, and the hoisting device is based on the premise that the ropes, etc. are bound on the hoisted goods, so the hoisting process is relatively complex. Sometimes, when no rope exists, three lifting hooks can be used for lifting, the three lifting hooks are hooked at the bottom of the cargo from a triangular shape in the lifting process, and although rope binding is omitted in the mode, stability and safety cannot be guaranteed.

Disclosure of Invention

The invention aims to provide an adjustable hoisting clamp which can directly hoist cargoes without binding the cargoes.

The upper end of a connecting plate is fixedly connected to the lower end of a suspender, the lower end of the connecting plate is connected to a hoisting head in a shaft mode, a swinging allowance gap is reserved between the suspender and the hoisting head, the hoisting head is inserted into the top end of a central shaft through threads, and a fastening bolt is sleeved on the hoisting head through threads; the central shaft is sequentially sleeved with a ball guide sleeve and an outer sleeve, and the central shaft at the lower end of the outer sleeve is provided with a locking ring; a claw arm fixing frame is fixedly arranged at the bottom end of the central shaft, the tail end of the claw arm is connected to the claw arm fixing frame through a claw arm shaft, the claw arm is connected with one end shaft of a connecting rod through a connecting rod shaft, the other end of the connecting rod is connected to one end of a support arm through a support arm shaft, and the other end of the support arm is fixedly arranged on an outer sleeve;

locking a ring: the middle part of the locking ring body is a central shaft hole, a half-width locking groove is formed in the locking ring body, a full-width locking groove is formed in the other side corresponding to the axis of the half-width locking groove, bolt holes are formed in two parts, corresponding to the full-width locking groove, of the locking ring body, the locking bolt penetrates through one part of the locking ring body, the tail end of the locking bolt is connected with the other part of the locking ring body through threads, and a rotating handle is mounted on the locking bolt.

The outer end of the claw arm is provided with a bent hook arm, and the end part of the bent hook arm is provided with an inner return hook.

The number of the claw arms is three, and the included angle between every two claw arms is 120 degrees.

The invention has simple structure and convenient operation and use. The invention is similar to the mode of holding objects by claws to grab the goods, so the goods do not need to be bound by ropes, the working procedures are saved, and the labor intensity of personnel is reduced. The arrangement of the three claw arms just forms the support of one surface, and the barb at the end part of the claw arm can be hooked in a surface mode completely from the bottom of the goods, so that the hook is more stable, and the safety is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1 in accordance with the present invention;

FIG. 3 is a schematic view of a locking ring of the present invention;

FIG. 4 is a schematic view of the claw arm construction of the present invention;

FIG. 5 is a schematic diagram of the ball guide sleeve, outer sleeve and locking ring of the present invention fitted around a central shaft.

Detailed Description

The invention mainly relates to the design of a lifting claw, so that the real lifting mechanism can be butted with the existing equipment. 2 upper ends fixed connection of connecting plate is at 1 lower extreme of jib, and 1 top of jib is used for with take off and land the device butt joint, and this top can design fixed mode by oneself according to the condition of manufacturing enterprise separately.

The lower end shaft of the connecting plate 2 is connected to the hoisting head 5, a swinging allowance gap 3 is reserved between the hoisting rod 1 and the hoisting head 5, two connecting plates 2 are generally adopted, and the two connecting plates 2 clamp the hoisting rod 1 and the hoisting head 5 from two sides. Since the suspension rod 1 is connected with the lifting mechanism, the suspension rod cannot swing freely, so that the lower suspension claw mechanism can have a swing space, the suspension claw mechanism can be used as a transition piece through the connecting plate 2, and therefore, the suspension head 5 can swing in a range allowed by the swing allowance gap 3 relative to the suspension rod 1.

The hoisting head 5 is inserted at the top end of the central shaft 6 through threads, and the hoisting head 5 is sleeved with a fastening bolt 4 through threads; the hoisting head 5 is fastened to the top end of the central shaft 6 in a threaded manner, and the fastening bolt 4 is just a fastening function to prevent the hoisting head 5 from being disengaged in a manner similar to the conventional double-bolt fastening. The ball guide sleeve 8 and the outer sleeve 9 are sequentially sleeved on the central shaft 6, the ball guide sleeve 8 and the outer sleeve 9 can move up and down outside the central shaft 6, the central shaft 6 at the lower end of the outer sleeve 9 is provided with a locking ring 15, the locking ring 15 is used for limiting the moving positions of the ball guide sleeve 8 and the lower end of the outer sleeve 9 and preventing the ball guide sleeve 8 from falling off at the lower part of the outer sleeve 9, and the moving distance of the ball guide sleeve 8 and the outer sleeve 9 on the central shaft 6 determines the opening degree of the claw arm 7. A claw arm fixing frame 14 is fixedly installed at the bottom end of the central shaft 6, the tail end of a claw arm 7 is connected to the claw arm fixing frame 14 through a claw arm shaft 13 in a shaft mode, the claw arm 7 is connected with one end of a connecting rod 11 through a connecting rod shaft 12 in a shaft mode, the other end of the connecting rod 11 is connected to one end of a support arm 16 through a support arm shaft 10 in a shaft mode, and the other end of the support arm 16 is fixedly installed on an; the claw arm fixing frame 14 and the support arm 16 are fixed parts, the connecting rod 11 and the claw arm 7 are movable parts, and the claw arm 7 can be grasped and stretched by connecting in a shaft manner.

Locking ring 15: the middle part of a locking ring body 1503 is provided with a central shaft hole 1507, the locking ring body 1503 is provided with a half locking groove 1502, the other side corresponding to the axis of the half locking groove 1502 is provided with a full locking groove 1505, two parts of the locking ring body 1503 corresponding to the full locking groove 1505 are provided with bolt holes 1504, a locking bolt 1506 passes through one part of the locking ring body 1503, the tail end of the locking bolt is connected with the other part of the locking ring body 1503 through threads, and a rotating handle 1501 is installed on the locking bolt 1506. The locking ring 15 is constructed as an interchangeable part, and by fastening to the central shaft, it defines the distance of movement of the ball guide 8 and the outer sleeve 9 on the central shaft 6, which determines the extent of expansion and contraction of the claw arms 7.

The outer end of the claw arm 7 is provided with a bent hook arm 71, and the end part of the bent hook arm 71 is provided with an inner return hook 72. The structural design of the bent hook arm 71 and the inner hook 72 can hook the goods from the bottom of the goods, similar to the effect of grabbing objects by fingers. The firmness in the process of grabbing the goods is further improved.

The number of the claw arms 7 is three, and the included angle between every two claw arms 7 is 120 degrees. The three claw arms are designed according to the principle that three points determine a plane, and the angles are equally divided, so that the grabbing is more stable.

The use process comprises the following steps:

now, the lifting machine equipped with the present invention is placed on the top of the goods, then the device of the present invention is placed downwards, when the bottom end of the claw arm contacts the ground, under the action of the middle gravity, the claw arm of the present invention, except that the claw arm contacting the ground is blocked and can not descend continuously, the upper part of the central shaft will descend continuously, the claw arm will open, the ball guide sleeve 8 and the outer sleeve 9 will move upwards along the central shaft and pull away from the locking ring 15, when the goods cover and the three claw arms are completely put in, the lifting machine is lifted, at this time, the central shaft moves upwards, the ball guide sleeve 8 and the outer sleeve 9 move downwards, the claw arm carries on the action of hand grasping, the bending hook arm 71 will extend to the bottom of the goods, after the goods cover is completely inserted, at this time, the ball guide sleeve 8 and the outer sleeve 9 also contact the locking ring 15, the claw arm is restricted from contracting continuously, but at the same time, the goods are basically grasped, meanwhile, the claw arms are driven to lift the goods, in order to prevent the goods from slipping, the inner hook plays a key role, and the goods are hooked at the bottom of the goods. Therefore, after the goods are moved to the designated position, when the claw arms are completely opened, the ball guide sleeve 8, the outer sleeve 9 and the locking ring 15 are separated by a certain distance, at the moment, the locking ring is loosened, the claw arms move upwards to the bottoms of the ball guide sleeve 8 and the outer sleeve 9 to be locked, then the lifting machine is lifted, the device is simultaneously carried, the ball guide sleeve 8 and the outer sleeve 9 are limited relatively, therefore, the claw arms cannot be contracted, the goods cannot be grabbed when the claw arms are lifted, and the goods are placed at the designated position.

Claims

1. An adjustable stone tongs which characterized in that: the upper end of a connecting plate (2) is fixedly connected to the lower end of a suspender (1), the lower end of the connecting plate (2) is connected to a hoisting head (5) in a shaft mode, a swinging allowance gap (3) is reserved between the suspender (1) and the hoisting head (5), the hoisting head (5) is inserted into the top end of a central shaft (6) through threads, and a fastening bolt (4) is sleeved on the hoisting head (5) through the threads; a ball guide sleeve (8) and an outer sleeve (9) are sequentially sleeved on the central shaft (6), and a locking ring (15) is arranged on the central shaft (6) at the lower end of the outer sleeve (9); a claw arm fixing frame (14) is fixedly installed at the bottom end of the central shaft (6), the tail end of a claw arm (7) is connected to the claw arm fixing frame (14) through a claw arm shaft (13) in a shaft mode, the claw arm (7) is connected with one end shaft of a connecting rod (11) through a connecting rod shaft (12), the other end of the connecting rod (11) is connected to one end of a support arm (16) through a support arm shaft (10) in a shaft mode, and the other end of the support arm (16) is fixedly installed on an outer sleeve (9);

locking ring (15): the middle part of a locking ring body (1503) is provided with a central shaft hole (1507), the locking ring body (1503) is provided with a half-width locking groove (1502), the other side corresponding to the axis of the half-width locking groove (1502) is provided with a full-width locking groove (1505), two parts of the locking ring body (1503) corresponding to the full-width locking groove (1505) are provided with bolt holes (1504), a locking bolt (1506) penetrates through one part of the locking ring body (1503), the tail end of the locking bolt is connected with the other part of the locking ring body (1503) through threads, and a rotating handle (1501) is arranged on the locking bolt (1506).

2. An adjustable lifting clamp according to claim 1, characterised in that: the outer end of the claw arm (7) is provided with a bending hook arm (71), and the end part of the bending hook arm (71) is provided with an inner return hook (72).

3. An adjustable lifting clamp according to claim 1, characterised in that: the number of the claw arms (7) is three, and the included angle between every two claw arms (7) is 120 degrees.