Steel plate hoisting self-locking clamp

Abstract

The utility model discloses a steel plate hoisting self-locking clamp which comprises two panels, a rotatable crank arm is installed between the two panels through an installation shaft, clamping openings are formed in the panels, a rotatable dynamic clamping plate is installed at the end, close to the clamping openings, of the crank arm, and a steel wire rope is fixed to the other end of the crank arm. A crank shaft located above the mounting shaft is further fixed between the two panels, the steel wire rope penetrates through the bottom of the crank shaft and extends upwards, and when the steel wire rope is lifted, the crank arm is driven to rotate with the mounting shaft as a fulcrum, and the dynamic clamping plate is driven to move towards one side of the clamping opening. According to the self-locking clamp for hoisting the steel plate, in the hoisting process of the steel plate, the stress angle of the crank arm is increased through the crank arm and the crank shaft, the clamping force of the crank arm is improved, falling of the crank arm is prevented through friction force, the clamping face and the fixing face are always kept to be highly attached to the two faces of the steel plate, it is guaranteed that the two faces of the steel plate are in face-to-face contact with the gravity to be freely clamped, and the hoisting safety coefficient is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of a steel plate clamp. Background Art

[0002] A fixture is a device used to fix the object to be processed in the mechanical manufacturing process so that it occupies the correct position for construction or inspection. It is also called a clamp. In a broad sense, any device used to quickly, conveniently and safely install the workpiece in any process in the process can be called a fixture.

[0003] Clamps are often used in the lifting of H-shaped steel and steel plates, and play an important role. To ensure safety during the lifting process, there are currently two types of clamps on the market. One is a lifting clamp clamp, most of which require a wrench to turn the screw for clamping. Although the safety is improved, its operation is troublesome and requires manual rotation of the screw during installation and disassembly. There is also a self-locking clamp, which not only has a small contact area, but most of it can only meet horizontal lifting. During vertical lifting, the supporting force is very weak and there is a risk of falling. Cross-arm clamps make it even more difficult to vertically lift steel plate objects. To solve the above problems, a self-locking clamp for steel plate lifting is proposed in the present application. Utility Model Content

[0004] The utility model aims to provide a self-locking fixture for hoisting a steel plate to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A self-locking clamp for lifting steel plates comprises two panels, a rotatable crank arm is installed between the two panels via a mounting shaft, a clamping opening is provided in the panel, a rotatable dynamic clamping plate is installed at one end of the crank arm close to the clamping opening, a steel wire rope is fixed to the other end of the crank arm, and a turning shaft located above the mounting shaft is also fixed between the two panels, the steel wire rope extends upward through the bottom of the turning shaft, and when the steel wire rope is pulled, the crank arm is driven to rotate with the mounting shaft as a fulcrum, thereby driving the dynamic clamping plate to move toward one side of the clamping opening.

[0007] As a further solution of the utility model: the installation shaft has the same structure as the turning shaft, the turning shaft includes a shaft body, a limiting shaft sleeve and bolts, the shaft body passes through the panel and is fixed by bolts, and a limiting shaft sleeve is installed on the outside of the shaft body and is located between the two panels.

[0008] As a further solution of the utility model: the outer side of the shaft body of the installation shaft is connected to the crank arm through a bearing, and the dynamic clamp installed on the crank arm takes the shaft body as the center of the circle, so that the dynamic clamp moves in an arc trajectory during the rotation process.

[0009] As a further solution of the utility model: a rotatable pulley is installed on the outer side of the crank shaft through a bearing, and an inwardly recessed groove is provided on the pulley. The wire rope is limited in the groove to move, and the wire rope rubs the pulley to rotate.

[0010] As a further solution of the utility model: the dynamic splint is composed of a plate body, a mounting seat and a fixed shaft, two fixed mounting seats are installed on one side of the plate body, a fixed shaft is installed between the two mounting seats, and the outer side of the fixed shaft is rotatably connected to the crank arm through a bearing.

[0011] As a further solution of the utility model: a bolt body is arranged at one end of the crank arm connected to the steel wire rope, and the steel wire rope is fixed on the bolt body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] This self-locking clamp for lifting steel plates uses a curved arm and a crank shaft to increase the force angle of the curved arm during lifting of the steel plate, thereby increasing its clamping strength and preventing it from falling through friction. The clamping surface and the fixed surface always maintain a high fit with both sides of the steel plate, ensuring that the two sides of the steel plate are clamped freely by gravity in contact, thereby improving the safety factor of lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural stereogram of a self-locking fixture for lifting steel plates;

[0015] Figure 2 This is a structural exploded view of a self-locking fixture for lifting steel plates;

[0016] Figure 3 The figure is a structural diagram of a self-locking fixture for lifting steel plates.

[0017] In the figure: 1. panel; 2. crank shaft; 201. shaft body; 202. limit sleeve; 203. bolt; 3. mounting shaft; 4. crank arm; 5. bolt body; 6. wire rope; 7. clamp; 8. pulley; 9. fixed shaft; 10. dynamic splint. DETAILED DESCRIPTION

[0018] See also Figures 1 to 3In the embodiment of the utility model, a self-locking fixture for lifting steel plates comprises two panels 1, a rotatable crank arm 4 is installed between the two panels 1 through a mounting shaft 3, a clamping opening 7 is provided in the panel 1, a rotatable dynamic clamping plate 10 is installed at one end of the crank arm 4 close to the clamping opening 7, a steel wire rope 6 is fixed at the other end of the crank arm 4, a crank shaft 2 is also fixed between the two panels 1 and is located above the mounting shaft 3, the steel wire rope 6 passes through the bottom of the crank shaft 2 and extends upward, when the steel wire rope 6 is pulled, the crank arm 4 is driven to rotate with the mounting shaft 3 as a fulcrum, and the dynamic clamping plate 10 is driven to move to one side of the clamping opening 7, the panel 1 is the main carrier of the lifting self-locking fixture, the crank arm 4 is installed through the mounting shaft 3, so that the crank arm 4 can be outside the mounting shaft 3 The steel plate can be placed horizontally or vertically by rotating the steel wire rope 6 on the side, and the steel wire rope 6 is fixed to the overhead crane. The overhead crane controls the retraction and extension of the steel wire rope 6. The steel plate can be placed horizontally or vertically. During installation, the steel wire rope 6 is relaxed, and the steel plate is clamped into the clamp 7. During the tightening process of the steel wire rope 6, the crank arm 4 is driven to rotate, so that the dynamic clamp 10 and the clamp 7 clamp the steel plate, and the lifting is stable and safe. After placement, the steel wire rope 6 is relaxed, and gravity disappears, and it can be easily separated. During the lifting of the steel plate, this fixture uses the principle of the crank arm 4 and the crank shaft 2 to ensure that the clamping surface of the dynamic clamp 10 and the fixed surface of the clamp 7 are always in contact with the two sides of the steel plate for gravity-free clamping. The crank shaft 2 changes the acceptance angle of the power arm of the crank arm 4, so that it is subjected to greater force during clamping, and the clamping is more stable, which meets the clamping force for vertical and horizontal lifting.

[0019] In a preferred embodiment, the mounting shaft 3 has the same structure as the crank shaft 2. The crank shaft 2 includes a shaft body 201, a limiting shaft sleeve 202 and a bolt 203. The shaft body 201 passes through the panel 1 and is fixed by the bolt 203. A limiting shaft sleeve 202 located between the two panels 1 is installed on the outer side of the shaft body 201. The outer side of the shaft body 201 of the mounting shaft 3 is connected to the crank arm 4 through a bearing. The dynamic splint 10 installed on the crank arm 4 takes the shaft body 201 as the center of the circle, so that the dynamic splint 10 moves in an arc trajectory during rotation. A rotatable pulley 8 is installed on the outer side of the crank shaft 2 through a bearing, and the pulley 8 is provided with an inwardly concave The steel wire rope 6 is limited in the groove for movement, and the steel wire rope 6 rotates by friction with the pulley 8. The crank shaft 2 and the installation shaft 3 are the main supporting and installing structures, which not only need to withstand a large gravity, but also need to maintain the position and rotation stability of the crank arm 4. Considering the convenience of disassembly and assembly, a limiting sleeve 202 is provided to position the bearing. When the bolt is locked, the limiting sleeve 202 clamps the bearing and limits it. The outer circle of the limiting sleeve 202 is fixed to the crank arm 4. When the shaft body 201 is pulled out, the crank arm 4 is removed together. The function of the pulley 8 is to prevent the steel wire rope 6 and the crank shaft 2 from rubbing and wearing each other.

[0020] In a preferred embodiment, the dynamic splint 10 is composed of a plate body, a mounting seat and a fixed shaft 9. Two fixed mounting seats are installed on one side of the plate body, and a fixed shaft 9 is installed between the two mounting seats. The outer side of the fixed shaft 9 is rotatably connected to the crank arm 4 through a bearing. The dynamic splint 10 is clamped by moving in an arc trajectory. Therefore, if the plate body is fixed, the clamping surface of the plate body will tilt, and the force will be uneven when in contact with the steel plate. The plate body will cause the steel plate to fall off after deformation. The mounting seat and the fixed shaft 9 are rotatably connected to adapt to the inclination of the clamping surface of the plate body when moving in an arc trajectory, so that it can maintain a high fit with the steel plate and generate sufficient friction.

[0021] In a preferred embodiment, a bolt body 5 is provided at one end of the curved arm 4 connected to the wire rope 6, and the wire rope 6 is fixed on the bolt body 5. The distance from the mounting axis 3 to the bolt body 5 is the power arm during the clamping process, and the distance from the mounting axis 3 to the dynamic clamp 10 is the resistance arm during the clamping process. Through use in different scenarios, the curved arm 4 with different ratios of power arm and resistance arm can be set to adapt to more work requirements.

[0022] It should be noted that the above embodiments all belong to the same utility model concept, and the description of each embodiment has its own focus. For matters that are not described in detail in some embodiments, reference can be made to the description in other embodiments.

[0023] The above-mentioned embodiments only express the implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A self-locking fixture for lifting steel plates, comprising two panels (1), characterized in that: A rotatable crank arm (4) is installed between the two panels (1) via a mounting shaft (3), a clamping opening (7) is provided in the panel (1), a rotatable dynamic clamping plate (10) is installed at one end of the crank arm (4) close to the clamping opening (7), a steel wire rope (6) is fixed to the other end of the crank arm (4), and a crank shaft (2) located above the mounting shaft (3) is also fixed between the two panels (1), the steel wire rope (6) passes through the bottom of the crank shaft (2) and extends upward, and when the steel wire rope (6) is pulled, the crank arm (4) is driven to rotate with the mounting shaft (3) as a fulcrum, thereby driving the dynamic clamping plate (10) to move toward the side of the clamping opening (7).

2. A self-locking fixture for lifting steel plates according to claim 1, characterized in that: The mounting shaft (3) has the same structure as the turning shaft (2); the turning shaft (2) comprises a shaft body (201), a limiting shaft sleeve (202) and a bolt (203); the shaft body (201) passes through the panel (1) and is fixed by the bolt (203); a limiting shaft sleeve (202) located between the two panels (1) is installed on the outer side of the shaft body (201).

3. A self-locking fixture for lifting steel plates according to claim 2, characterized in that: The outer side of the shaft body (201) of the mounting shaft (3) is connected to the crank arm (4) via a bearing, and the dynamic clamping plate (10) mounted on the crank arm (4) takes the shaft body (201) as the center of a circle, so that the dynamic clamping plate (10) moves in an arc track during rotation.

4. A self-locking fixture for hoisting steel plates according to claim 2, characterized in that: A rotatable pulley (8) is mounted on the outer side of the crank shaft (2) via a bearing. The pulley (8) is provided with an inwardly recessed groove. The steel wire rope (6) is limited in the groove to move, and the steel wire rope (6) rubs against the pulley (8) to rotate.

5. The self-locking fixture for hoisting steel plates according to claim 1, characterized in that: The dynamic clamping plate (10) is composed of a plate body, a mounting seat and a fixed shaft (9), two fixed mounting seats are mounted on one side of the plate body, the fixed shaft (9) is mounted between the two mounting seats, and the outer side of the fixed shaft (9) is rotatably connected to the crank arm (4) via a bearing.

6. A self-locking fixture for hoisting steel plates according to claim 1, characterized in that: One end of the crank arm (4) connected to the steel wire rope (6) is provided with a bolt body (5), and the steel wire rope (6) is fixed on the bolt body (5).

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