CN116588800A - Lifting appliance - Google Patents

Abstract

The application discloses a lifting appliance, which comprises two clamp arms; the middle parts of the two clamp arms are hinged, the tail parts of the two clamp arms are hung, and clamping jaws which are opposite at intervals are arranged at the heads of the two clamp arms; the middle parts of the two clamp arms are provided with a hinge shaft and a plurality of hinge hole positions for installing the hinge shaft. The lifting appliance can clamp a workpiece to be lifted by utilizing the two clamp arms capable of performing shearing movement and the clamping jaw arranged on the clamp arms, and can solve the lifting problem of the aluminum alloy round ingot casting waiting for lifting the workpiece. The lifting tool can clamp workpieces to be lifted of different sizes and weights by adjusting the installation position of the hinge shaft in the hinge hole site, and the greater the weight of the workpieces to be lifted is, the greater the clamping degree of the lifting tool on the workpieces to be lifted is, so that the workpieces to be lifted are prevented from falling in the lifting process. Therefore, the lifting appliance provided by the application has a simple structure, is convenient to use, can be suitable for workpieces to be lifted with different specifications, and realizes synchronous operation of clamping and lifting.

Description

Lifting appliance

Technical Field

The application relates to the technical field of tools, in particular to a lifting appliance.

Background

In the production process line of the aluminum alloy round ingot, frequent hoisting of the aluminum alloy round ingot is required.

At present, the following two modes are mainly adopted to hoist the aluminum alloy round ingot: 1. clamping the circumferential surface of the aluminum alloy round ingot by using a clamp, and transferring the aluminum alloy round ingot by using the clamp; 2. the end part of the aluminum alloy round ingot is bound by adopting a steel wire rope, and the aluminum alloy round ingot is connected to power equipment such as a crane by utilizing the steel wire rope, so that the aluminum alloy round ingot is transferred.

The above-mentioned first lifting manner is relatively more limited to the structural form of the clamp, and is only suitable for clamping round aluminum alloy ingots with relatively small size and relatively light weight, and if the round aluminum alloy ingots are relatively large in size and weight, the clamp is relatively large in size, difficult to deform and limited in clamping force, and the round aluminum alloy ingots are easy to drop in the lifting process. The second lifting mode needs to bind the end part of the aluminum alloy round ingot, if the size of the aluminum alloy round ingot is large, the steel wire rope binding difficulty is large, the position and the angle of the aluminum alloy round ingot in the lifting process are difficult to maintain, and the aluminum alloy round ingot is easy to drop.

In summary, how to provide a lifting tool suitable for aluminum alloy round ingots with different specifications becomes a problem to be solved by those skilled in the art.

Disclosure of Invention

The application aims to provide a lifting appliance which can clamp and hang workpieces to be lifted with different specifications, such as aluminum alloy round ingots, is simple and convenient to operate, and the clamping force can be automatically adjusted by being suitable for the workpieces to be lifted with different specifications, so that the lifting operation requirements of the workpieces to be lifted with different specifications are met.

To achieve the above object, the present application provides a spreader comprising two clamp arms; the middle parts of the two clamp arms are hinged, the tail parts of the two clamp arms are hung, and clamping jaws which are opposite at intervals are arranged at the heads of the two clamp arms; the middle parts of the two clamp arms are provided with a hinge shaft and a plurality of hinge hole positions for installing the hinge shaft.

In some embodiments, a locking bolt is disposed between the two clamp arms; one end of the locking bolt is hinged to the head of one clamp arm, and the other end of the locking bolt can rotate to the position above the tail of the other clamp arm so as to prevent the tail of the clamp arm from moving upwards.

In some embodiments, either clamp arm includes a cross arm and a bent arm disposed at one end of the cross arm; the clamping jaw is arranged on the bent arm, and the hinge hole is formed in the middle of the cross arm along the length direction; the plane of rotation of the locking bolt is immediately adjacent to the upper surface of either cross arm.

In some embodiments, two clamping jaws are used to clamp the axial ends of the shaft to be hoisted; any clamp arm is provided with a limiting part which can be downwards clung to the upper curved surface of the shaft to be hoisted.

In some embodiments, the limit portion includes an arcuate locating plate spanning in a radial direction of the shaft to be hoisted.

In some embodiments, an arcuate locating plate is slidably mounted to the clamp arm, the arcuate locating plate being slidable along the length of the clamp arm.

In some embodiments, the jaw includes a mount, a clamp plate, and a resilient connector; the mounting seat is in locking connection with the clamping plate through a fastener; the elastic connecting piece is arranged between the clamping plate and the corresponding clamp arm and is used for upwards lifting the clamping plate.

In some embodiments, either jaw is provided with a relief for pressing the shaft to be hoisted.

In some embodiments, a lifting rope is attached to the tail of both clamp arms.

In some embodiments, a plurality of hoist ropes respectively connected to the two clamp arms are connected to the same hoist ring.

Compared with the background art, the lifting appliance provided by the application comprises two clamp arms; the middle parts of the two clamp arms are hinged, the tail parts of the two clamp arms are hung, and the heads of the two clamp arms are provided with clamping jaws which are opposite at intervals; in addition, the middle parts of the two clamp arms are provided with a hinge shaft and a plurality of hinge hole positions for installing the hinge shaft.

When the lifting tool provided by the application is used, the two clamp arms can do scissor-type movement, so that when the tail parts of the two clamp arms are hung and installed and are mutually closed, the heads of the two clamp arms are mutually closed, and the clamping jaws arranged on the two clamp arms are mutually closed to clamp two ends of a piece to be lifted, such as an aluminum alloy round cast ingot.

Therefore, the lifting tool provided by the application has a simple structure, is convenient to use, can be suitable for workpieces to be lifted of different specifications, meets the operation requirements of clamping and lifting, can solve the lifting problem of aluminum alloy round ingots, can clamp aluminum alloy round ingots of different sizes and weights, and has a higher clamping degree on the aluminum alloy round ingots as the weight of the aluminum alloy round ingots is higher.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.

Fig. 1 is an assembly schematic diagram of a lifting appliance and a shaft to be lifted provided by an embodiment of the present application;

fig. 2 is a schematic structural diagram of a lifting appliance according to an embodiment of the present application;

fig. 3 is a left side view of fig. 2.

The device comprises a 01-shaft to be hoisted, a 1-clamp arm, an 11-cross arm, a 12-bent arm, a 2-hinge shaft, a 3-clamping jaw, a 31-mounting seat, a 32-clamping plate, a 33-elastic connecting piece, a 34-fastening piece, a 4-hinge hole site, a 5-locking bolt, a 6-arc-shaped locating plate, a 7-lifting rope and an 8-lifting ring.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The present application will be further described in detail below with reference to the drawings and detailed description for the purpose of enabling those skilled in the art to better understand the aspects of the present application.

Referring to fig. 1 to 3, fig. 1 is an assembly schematic diagram of a lifting appliance and a shaft to be lifted according to an embodiment of the present application; FIG. 2 is a front view of FIG. 1; fig. 3 is a left side view of fig. 2. The shaft to be hoisted is not shown in fig. 2, but is shown in two-dot chain lines in fig. 1 and 3 for the convenience of understanding.

As shown in fig. 1 to 3, the present application provides a spreader comprising two gripper arms 1; in the embodiment, the middle parts of the two clamp arms 1 are hinged, the tail part is hung, and the head parts are provided with clamping jaws 3 which are opposite at intervals; the middle part of the two clamp arms 1 is provided with a hinge shaft 2 and a plurality of hinge holes 4, and the hinge shaft 2 can be arranged in any one hinge hole 4.

In this spreader, the middle parts of two clamp arms 1 are hinged, and any one clamp arm 1 is divided into a head part and a tail part from its hinge position, in other words, the head part and the tail part are located on both sides of the hinge position of the clamp arm 1, respectively. Because the middle parts of the two clamp arms 1 are hinged by the hinge shaft 2 and the hinge hole site 4, the two clamp arms 1 can be assembled into a scissor structure, and the lifting appliance realizes clamping through the scissor movement of the scissor structure.

In this spreader, the tail portions of two clamp arms 1 are hung, and at the same time, the head portions of the two clamp arms 1 are provided with clamping jaws 3 facing each other at intervals. According to the above, the two clamp arms 1 can realize scissor-type movement, when the tail parts of the two clamp arms 1 are lifted upwards and are close to each other, the head parts of the two clamp arms 1 and the clamping jaws 3 of the two clamp arms are also close to each other, so that a workpiece to be lifted, such as a shaft 01 to be lifted, can be clamped; conversely, when the tail parts of the two clamp arms 1 are far away from each other, the head parts of the two clamp arms 1 and the clamping jaws 3 of the two clamp arms are also far away from each other, so that the work piece to be lifted can be loosened.

Since the two clamp arms 1 are provided with one hinge shaft 2 and a plurality of hinge holes 4 to which the hinge shaft 2 can be attached, the two clamp arms 1 can change their hinge positions. For a single clamp arm 1, changing the articulation position may change the length of the head and tail of the clamp arm 1, e.g., by mounting the articulation shaft 2 at the articulation hole 4 near the head of the clamp arm 1, the length of the head of the clamp arm 1 becomes shorter and the length of the tail becomes longer; for two clamp arms 1, changing the lengths of the head and tail of the two clamp arms 1 at the same time can change the maximum clamping range of the lifting appliance, for example, the larger the length of the head of the two clamp arms 1, the larger the maximum clamping range of the lifting appliance, whereas the smaller the length of the head of the two clamp arms 1, the smaller the maximum clamping range of the lifting appliance. Therefore, the lifting appliance can adjust the maximum clamping range of the lifting appliance, so that the lifting appliance is suitable for workpieces to be lifted with different specifications.

In summary, the lifting appliance provided by the application has a simple structure, is convenient to use, can be suitable for workpieces to be lifted with different specifications, and realizes synchronous operation of clamping and lifting.

The lifting appliance provided by the application is further described below with reference to the accompanying drawings and embodiments.

In some embodiments, the spreader further comprises a locking bolt 5 provided between the two clamp arms 1; one end of the locking bolt 5 is hinged to the head of one of the clamp arms 1 so that the other end of the locking bolt 5 can rotate and is shielded above the tail of the other clamp arm 1. It can be seen that the locking bolt 5 is provided between the head of one of the clamp arms 1 and the tail of the other clamp arm 1, and the relative positional relationship of the locking bolt 5 and the two clamp arms 1 can be adjusted by rotating the locking bolt 5.

For example, assuming that the locking bolt 5 is hinged to the head of the first clamp arm 1 and is rotatable above the tail of the second clamp arm 1, the operator may rotate the locking bolt 5, changing the relative position of the locking bolt 5 and the tail of the second clamp arm 1. When the lock bolt 5 is rotated to be covered over the tail of the second clamp arm 1, the lock bolt 5 can prevent the tail of the second clamp arm 1 from moving upward based on the first clamp arm 1, and since the tail of any clamp arm 1 has a movement tendency to move upward in the suspended state, when the hanger is in the suspended state, the lock bolt 5 plays a practical role equivalent to relatively fixing the two clamp arms 1, and thus the lock bolt 5 can be seen to be in the locked state. Conversely, if the locking bolt 5 is rotated away from above the tail of the second clamp arm 1, the locking bolt 5 is only connected to the first clamp arm 1 without affecting the movement of the second clamp arm 1, so that the locking bolt 5 can be seen in an unlocked state.

According to the above, the locking bolt 5 in the locking state can relatively fix the two clamp arms 1 in the hanging state, so that the tail parts of the two clamp arms 1 are prevented from being mutually closed, the head parts of the two clamp arms 1 are prevented from being mutually closed, the function of limiting the distance between the two clamping jaws 3 can be achieved, the workpiece to be lifted can be conveniently installed in the two clamping jaws 3, the workpiece to be lifted can be conveniently taken out from the two clamping jaws 3, and the separation of the lifting appliance and the workpiece to be lifted can be realized; on the contrary, the locking bolt 5 in the unlocking state does not obstruct the relative movement of the two clamp arms 1, and the two clamp arms 1 can adjust the distance between the two clamping jaws 3 through the scissor-type movement, so that the action requirements of clamping and releasing the workpiece to be lifted are met.

Referring to fig. 2, the clamp arm 1 may generally include a cross arm 11 and a bent arm 12 provided at one end of the cross arm 11; the clamping jaw 3 is arranged on the bent arm 12, the hinge hole position 4 is arranged at the middle part of the cross arm 11 along the length direction, and the rotation plane of the locking bolt 5 is adjacent to the upper surfaces of the cross arms 11 of the two clamp arms 1.

Since the clamp arm 1 distinguishes between a head and a tail with the hinge position 4, it can be seen that in the above embodiment the head of the clamp arm 1 comprises a bent arm 12 and a part of the cross arm 11 and the tail of the clamp arm 1 comprises a further part of the cross arm 11. When the locking bolt 5 is used for locking and unlocking the two clamp arms 1, the locking bolt 5 is positioned between the cross arms 11 of the two clamp arms 1, and obviously, when the cross arms 11 of the two clamp arms 1 are leveled, the locking bolt 5 can be rotated above the cross arms 11 of the two clamp arms 1 for locking the two clamp arms 1, and can be rotated above the cross arms 11 of one clamp arm 1, so that the two clamp arms 1 are unlocked.

In some embodiments, the spreader is used to grip the shaft 01 to be lifted, that is, the workpiece to be lifted mentioned above refers to the shaft 01 to be lifted. When the lifting appliance is used, the two clamping jaws 3 of the lifting appliance are used for clamping the two axial ends of the shaft 01 to be lifted, meanwhile, any one clamping arm 1 is provided with a limiting part, and the limiting part is used for downwards clinging to the upper curved surface of the shaft 01 to be lifted, so that the auxiliary positioning function can be exerted on the shaft 01 to be lifted. It can be seen that in this embodiment, the lifting appliance utilizes the clamping jaw 3 and the limiting part to jointly constrain the shaft 01 to be lifted, so as to improve the grabbing effect of the shaft 01 to be lifted, and avoid the phenomenon that the shaft 01 to be lifted tilts, loosens and even breaks away from the lifting appliance.

Referring to fig. 1 and 2, in general, the limiting portion may include an arc-shaped positioning plate 6 that may be downwardly attached to the shaft 01 to be lifted, and the arc-shaped positioning plate 6 has an inner curved surface that coincides with an upper curved surface of the shaft 01 to be lifted. When the lifting appliance is used for clamping the shaft 01 to be lifted, the arc-shaped positioning plate 6 spans along the radial direction of the shaft 01 to be lifted and is tightly attached to the shaft 01 to be lifted. The arc-shaped positioning plate 6 and the inner curved surface thereof enlarge the contact area between the limiting part and the shaft 01 to be hoisted, can restrict a plurality of degrees of freedom of the shaft 01 to be hoisted, and is beneficial to improving the positioning effect of the shaft 01 to be hoisted between the two clamping jaws 3.

Since the lifting appliance provided by the application can adjust the maximum clamping range, in order to adapt to the operation characteristic of the lifting appliance, the arc-shaped positioning plate 6 can be slidably mounted on the clamp arm 1, and the sliding direction of the arc-shaped positioning plate 6 is parallel to the length direction of the clamp arm 1, that is, the arc-shaped positioning plate 6 slides along the length direction of the clamp arm 1.

When the hoisting tool is used for clamping shafts 01 with different lengths to be hoisted, an operator can adjust the distance between the two clamping jaws 3 and the installation position of the arc-shaped positioning plate 6 on the clamp arm 1 according to the lengths of the shafts 01 to be hoisted, for example, when the lengths of the shafts 01 to be hoisted are relatively large, the operator can enable the heads of the two clamp arms 1 to be away from each other, so that the distance between the two clamping jaws 3 is enlarged, and the arc-shaped positioning plate 6 is slid towards the heads of the clamp arms 1, so that the distance between the two arc-shaped positioning plates 6 is enlarged.

In each of the above embodiments, any one of the jaws 3 may include a mount 31, a clamping plate 32, and an elastic connection 33; wherein, mount pad 31 and splint 32 pass through fastener 34 locking connection, and elastic connection piece 33 locates between splint 32 and the corresponding clamp arm 1, can upwards draw splint 32.

Because the mounting seat 31 and the clamping plate 32 are in locking connection through the fastener 34, the relative positions of the mounting seat 31 and the clamping plate 32 can be adjusted after the fastener 34 is loosened, so that the orientation of the clamping jaw 3 is changed; an elastic connecting piece 33 is arranged between the clamping plate 32 and the corresponding clamp arm 1, and when the fastener 34 is released, the elastic connecting piece 33 can maintain the connecting state of the clamping plate 32 and the corresponding clamp arm 1, so that the clamping plate 32 is prevented from falling off or naturally drooping under the action of gravity. As seen in fig. 2, the elastic connection member 33 may be specifically configured as a spring, where the spring is disposed between the clamping plate 32 and the corresponding clamping arm 1, so as to maintain the orientation of the clamping plate 32, so that the clamping plates 32 respectively disposed on the two clamping arms 1 always maintain a state of facing each other, and the two clamping jaws 3 are used to clamp the shaft 01 to be hoisted conveniently.

In general, the surface of clamping jaw 3 can set up the burr, when using clamping jaw 3 to press from both sides to get to wait to hoist and mount axle 01, burr and wait to hoist and mount axle 01 to paste mutually, can improve clamping jaw 3 and wait to hoist and mount the frictional force of axle 01, prevent to wait to hoist and mount axle 01 slip in the handling and drop. The convex lines can be specifically provided as the rice-shaped bulges, and can be provided as bulges with other shapes.

In some embodiments, the lifting appliance provided by the application further comprises a lifting rope 7 arranged at the tail parts of the two clamp arms 1, and obviously, the two clamp arms 1 are suspended by the lifting rope 7. When the two clamp arms 1 are hoisted by the lifting rope 7, the two clamp arms 1 can be connected to the same lifting rope 7, for example, the tail parts of the two clamp arms 1 are respectively provided with a mounting ring, and one lifting rope 7 sequentially penetrates through the two mounting rings and is connected end to end. The two clamp arms 1 may be connected to the hoist ropes 7, and all the hoist ropes 7 may be suspended at a point above the hoist in a concentrated manner, for example, all the hoist ropes 7 may be suspended in a concentrated manner.

Referring to fig. 2 and 3, two clamp arms 1 are respectively connected with a lifting rope 7, one end of any one lifting rope 7 is connected with the clamp arm 1, and the other end is connected with a lifting ring 8; all lifting ropes 7 are connected to the lifting rings 8, and the lifting slings 8 can be used for quickly connecting the lifting sling and the lifting machine, so that the use of the lifting sling is simplified.

In summary, the lifting appliance provided by the application can be used for solving the lifting problem of the aluminum alloy round ingots, and can clamp the aluminum alloy round ingots with different sizes and weights, and the greater the weight of the aluminum alloy round ingots is, the greater the clamping degree of the lifting appliance on the aluminum alloy round ingots is; the positioning connection effect on the aluminum alloy round ingot can be improved, and the aluminum alloy round ingot is prevented from tilting or rolling and falling in the lifting process; the operation of the equipment is simplified, and the aluminum alloy round ingot can be rapidly clamped and loosened without overturning the aluminum alloy round ingot.

The lifting appliance provided by the application is described in detail above. The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present application and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the application can be made without departing from the principles of the application and these modifications and adaptations are intended to be within the scope of the application as defined in the following claims.

Claims (10)

1. A spreader, characterized by comprising two gripper arms (1); the middle parts of the two clamp arms (1) are hinged, the tail parts of the two clamp arms (1) are hung, and clamping jaws (3) which are opposite at intervals are arranged at the heads of the two clamp arms (1); the middle parts of the two clamp arms (1) are provided with a hinge shaft (2) and a plurality of hinge holes (4) for installing the hinge shaft (2).

2. A lifting appliance according to claim 1, characterized in that a locking bolt (5) is provided between two of the clamp arms (1); one end of the locking bolt (5) is hinged to the head of one clamp arm (1), and the other end of the locking bolt (5) can rotate to the position above the tail of the other clamp arm (1) so as to prevent the tail of the clamp arm (1) from moving upwards.

3. A spreader according to claim 2, characterized in that any of the gripper arms (1) comprises a cross arm (11) and a bent arm (12) provided at one end of the cross arm (11); the clamping jaw is arranged on the bent arm (12), and the hinge hole site (4) is arranged in the middle of the cross arm (11) along the length direction; the rotation plane of the locking bolt (5) is closely adjacent to the upper surface of any cross arm (11).

4. The spreader according to claim 1, characterized in that two of the clamping jaws (3) are used for clamping the axial ends of the shaft (01) to be hoisted; any clamp arm (1) is provided with a limiting part which can be downwards attached to the upper curved surface of the shaft (01) to be hoisted.

5. The spreader of claim 4, wherein the limit portion comprises an arc-shaped positioning plate (6) straddling along the radial direction of the shaft (01) to be hoisted.

6. The spreader of claim 5, wherein the arcuate positioning plate (6) is slidably mounted to the clamp arm (1), the arcuate positioning plate (6) being slidable along the length of the clamp arm (1).

7. The spreader of any one of claims 1 to 6, characterized in that any one of the jaws (3) comprises a mounting seat (31), a clamping plate (32) and an elastic connection (33); the mounting seat (31) and the clamping plate (32) are in locking connection through a fastener (34); the elastic connecting piece (33) is arranged between the clamping plate (32) and the corresponding clamp arm (1) and is used for upwards lifting the clamping plate (32).

8. A spreader according to claim 7, characterized in that any of the jaws (3) is provided with a relief for pressing the shaft (01) to be hoisted.

9. A lifting appliance according to any one of claims 1-6, characterized in that the tail portions of both of the clamp arms (1) are connected with a lifting rope (7).

10. A spreader according to claim 9, characterized in that a plurality of said lifting ropes (7) connected to two of said gripper arms (1) respectively are connected to the same lifting eye (8).