Lifting appliance for transferring workpieces

Abstract

The utility model discloses a lifting appliance for transferring workpieces. The lifting appliance comprises a lifting arm and a clamping arm, wherein the clamping arm rotates anticlockwise or clockwise on the lifting arm; a shaft pin plate is also arranged on the suspension arm; one side of the shaft pin plate is fixedly connected with the suspension arm, and the other side of the shaft pin plate is connected with the clamping arm through a shaft pin; a reset piece is arranged below the shaft pin plate, and a self-locking arm is arranged above the shaft pin plate. The middle of the self-locking arm is connected with the suspension arm shaft pin, and the lower end of the self-locking arm abuts against the upper end of the clamping arm. When the self-locking arm is pulled by external force, the lower end of the self-locking arm enables the clamping arm to rotate on the shaft pin plate, so that the clamping arm is matched with the suspension arm to clamp a workpiece located between the suspension arm and the clamping arm. On the basis, a mechanical gravity self-locking structure is adopted, the risk that a workpiece falls off in the lifting process is greatly reduced, and due to the fact that the lifting appliance is of a pure mechanical structure, the manufacturing and using cost can be saved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a lifting device for transporting workpieces. Background Art

[0002] Manual grabbing and lifting device for new energy vehicle motor rotor. The rotor is an important part of the motor, and its quality has a significant impact on the motor performance. Usually the transfer of the rotor requires manual handling, so a simple manual grabbing and lifting device is needed to achieve the handling of the rotor.

[0003] like Figure 1 As shown, there are several ways of clamping the rotor for transportation. Generally, the rotor is grasped by clamping the core, which is the general grasping method for the above rotor. An external air source is required to drive the pneumatic gripper to clamp the rotor. A gripper cylinder and additional air circuit components are required to achieve grasping, which is relatively expensive. When the air is cut off, the rotor may fall, causing damage to the workpiece and safety risks. At the same time, due to the large size of the gripper during grasping, it is difficult to accurately position the gripper after moving, affecting the accuracy of grasping the rotor. That is: the larger the gripper, the greater the mass, and it is difficult to position it during movement. In addition, the inertia is large during movement, and it is difficult to position it during grasping and placement. Utility Model Content

[0004] The purpose of the utility model is to provide a lifting device for workpiece transportation to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sling for workpiece transportation, comprising a lifting arm and a clamping arm, and the lifting arm is also provided with an axis pin plate; one side of the axis pin plate is fixedly connected to the lifting arm, and the other side of the axis pin plate is connected with the clamping arm axis pin; a self-locking arm for causing the clamping arm to rotate on the axis pin plate is provided above the axis pin plate, and a reset member for causing the clamping arm to reset after the external force disappears is also provided below the axis pin plate.

[0006] As the preferred technical solution of the utility model: the middle part of the self-locking arm is connected to the boom axle pin, and when the self-locking arm is pulled by external force, the lower end of the self-locking arm prompts the clamping arm to rotate on the axle pin plate, so that the clamping arm and the boom clamp the workpiece located between the boom and the clamping arm.

[0007] As a preferred technical solution of the utility model: one end of the self-locking arm away from the clamping arm is connected to a universal lifting ring.

[0008] As a preferred technical solution of the utility model: the self-locking arm is arranged in a "V" shape, and the middle part of the self-locking arm is connected with an axle pin of an axle pin rod provided on the suspension arm.

[0009] As a preferred technical solution of the utility model: the lower ends of the clamping arm and the suspension arm are both movably connected to the provided clamping claws.

[0010] As a preferred technical solution of the utility model: the clamping jaw is also provided with a hook for hooking the workpiece.

[0011] As a preferred technical solution of the utility model: a contact surface for contacting the upper end surface of the workpiece is also provided above the hook.

[0012] By adopting the above technical solution, the beneficial effect of the utility model is that when the self-locking arm is pulled by an external force, the lower end of the self-locking arm causes the clamping arm to rotate on the axle pin plate, so that the clamping arm and the suspension arm cooperate with each other to clamp the workpiece between the suspension arm and the clamping arm. Based on this, a mechanical gravity self-locking structure is adopted, which greatly reduces the risk of workpiece falling during lifting, and because the lifting device adopts a purely mechanical structure, it can save manufacturing and use costs. In particular, the device has a simple structure, and the accuracy of the device in grabbing workpieces can be improved by manually moving the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 A schematic diagram of the state of grabbing the rotor for the existing equipment;

[0014] Figure 2 It is a schematic diagram of the main structure of the utility model;

[0015] Figure 3 It is a cross-sectional schematic diagram of the main structure of the utility model;

[0016] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0017] Figure 5 It is a schematic diagram of the state of the utility model when grabbing the rotor.

[0018] In the figure: 1. lifting arm; 2. clamping arm; 3. axle pin plate; 4. axle pin rod; 5. self-locking arm; 6. universal lifting ring; 7. reset member; 8. clamping claw; 9. contact surface; 10. hook. DETAILED DESCRIPTION

[0019] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0020] See also Figure 2-5 The utility model provides an embodiment: a lifting device for workpiece transportation, comprising a lifting arm 1 and a clamping arm 2, and the lifting arm 1 is also provided with an axis pin plate 3; one side of the axis pin plate 3 is fixedly connected to the lifting arm 1, and the other side of the axis pin plate 3 is axis pin-connected to the clamping arm 2; a self-locking arm 5 for causing the clamping arm 2 to rotate on the axis pin plate 3 is provided above the axis pin plate 3, and a reset member 7 for causing the clamping arm 2 to reset after the external force disappears is also provided below the axis pin plate 3.

[0021] In summary, when the self-locking arm 5 is subjected to external traction, the lower end of the clamping arm 2 can be urged to move toward the boom 1. At this time, the workpiece between the clamping arm 2 and the boom 1 will be clamped by the clamping arm 2 and the boom 1. Since the greater the weight of the workpiece, the greater the traction force on the self-locking arm 5, the greater the clamping force of the device on the workpiece; therefore, the phenomenon of the workpiece falling during the lifting process can be effectively avoided;

[0022] Based on this, a mechanical gravity self-locking structure is adopted, which greatly reduces the risk of workpiece falling during lifting. Since the lifting device adopts a purely mechanical structure, it can save manufacturing and use costs. In particular, the device has a simple structure and can be moved manually to improve the accuracy of the device in grabbing workpieces.

[0023] Among them, the connection between the clamping arm 2 and the shaft pin plate 3 is used as a fulcrum, and the power arm of the clamping arm 2 is greater than the resistance arm of the clamping arm 2. Therefore, the clamping force of the clamping arm 2 on the workpiece is increased by using the lever principle.

[0024] Specifically, the middle part of the self-locking arm 5 is connected to the axial pin of the boom 1. When the self-locking arm 5 is pulled by an external force, the lower end of the self-locking arm 5 prompts the clamping arm 2 to rotate on the axial pin plate 3, so that the clamping arm 2 and the boom 1 clamp the workpiece located between the boom 1 and the clamping arm 2.

[0025] In order to facilitate the movement of the lifting device, in particular, to adjust the position of the workpiece at any time during the movement, the end of the self-locking arm 5 away from the clamping arm 2 is connected to the universal lifting ring 6. Therefore, when the self-locking arm 5 is connected to the universal lifting ring 6, the self-locking arm 5 can rotate relative to the universal lifting ring 6, so that the user can adjust the position of the workpiece during the movement, thereby ensuring that the workpiece can be smoothly lifted to the predetermined position.

[0026] Furthermore, since the self-locking arm 5 is arranged in a "V" shape, and the middle part of the self-locking arm 5 is axially pinned to the axial pin rod 4 provided on the boom 1, the self-locking arm 5 can reliably trigger the clamping arm 2 while the upper end of the self-locking arm 5 can be basically parallel to the boom 1, so as to reduce the space occupied by the device in the lateral direction, thereby reducing the interference to the device when it moves.

[0027] On the basis of the above scheme, in order to improve the reliability of the device in clamping the workpiece, the clamping arm 2 and the lower end of the boom 1 are movably connected with the clamping claw 8, so the stability of the workpiece after clamping can be improved by the clamping claw 8. In addition, since the clamping claw 8 is movably installed at the lower end of the boom 1 and the clamping arm 2, for example, fasteners such as bolts pass through the clamping claw 8 and are connected to the corresponding components, the replacement of the clamping claw 8 is simple and convenient. At the same time, the corresponding clamping claw 8 can be set according to the shape of the clamping position of the workpiece to expand the application range of the device.

[0028] Specifically, when the workpiece is a rotor, the clamping jaw 8 is further provided with a hook 10 for hooking the workpiece, so the hook 10 can be used to hook the lower end surface of the rotor clamping position to prevent the rotor from falling, thereby improving the clamping ability of the clamping jaw 8 on the rotor.

[0029] Furthermore, since a contact surface 9 for contacting the upper end surface of the workpiece is provided above the hook 10, when the contact surface 9 is pressed against the upper end surface of the rotor clamping position, the hook 10 is hooked on the lower end surface of the rotor clamping position, thereby effectively improving the clamping ability of the device to the rotor, thereby making the rotor more stable and reliable during the lifting process.

[0030] In summary, before clamping the rotor, the arm 1 and the clamping arm 2 above the shaft pin plate 3 are held by hand at the same time, so that the lower end of the clamping arm 2 moves away from the arm 1, and then the lower ends of the arm 1 and the clamping arm 2 are opened, so that the two clamping jaws 8 move to the clamping position of the rotor, and then the hands are released. At this time, the reset member 7 resets the clamping arm 2, so that the two clamping jaws 8 can be reliably clamped on the rotor shaft, so as to preliminarily clamp the rotor;

[0031] When the initial clamping is completed, the hook on the universal lifting ring 6 causes the device to move upward. Due to the effect of gravity, the self-locking arm 5 will push the clamping arm 2 to rotate around the shaft pin 4 during the straightening process, so that the clamping claw 8 clamps the rotor shaft and forms a self-locking state.

[0032] When the rotor is placed, the universal lifting ring 6 loses its gravity support, and the lifting device is automatically unlocked. By holding the clamping arm 2 and the lifting arm 1 with one hand, the lifting device can be removed to complete the manual transportation of the rotor.

[0033] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A lifting device for workpiece transportation, characterized in that: It comprises a suspension arm (1) and a clamping arm (2), and the suspension arm (1) is also provided with an axle pin plate (3); One side of the axis pin plate (3) is fixedly connected to the boom (1), and the other side of the axis pin plate (3) is axis pin-connected to the clamping arm (2); A self-locking arm (5) is provided above the axle pin plate (3) for causing the clamping arm (2) to rotate on the axle pin plate (3), and a reset member (7) is provided below the axle pin plate (3) for causing the clamping arm (2) to reset after the external force disappears.

2. A lifting device for workpiece transportation according to claim 1, characterized in that: The middle part of the self-locking arm (5) is connected to the axle pin of the suspension arm (1). When the self-locking arm (5) is pulled by an external force, the lower end of the self-locking arm (5) causes the clamping arm (2) to rotate on the axle pin plate (3), so that the clamping arm (2) and the suspension arm (1) clamp a workpiece located between the suspension arm (1) and the clamping arm (2).

3. A lifting device for workpiece transportation according to claim 2, characterized in that: One end of the self-locking arm (5) away from the clamping arm (2) is connected to a universal lifting ring (6).

4. A lifting device for workpiece transportation according to claim 3, characterized in that: The self-locking arm (5) is arranged in a "V" shape, and the middle portion of the self-locking arm (5) is axially connected to an axial pin rod (4) provided on the suspension arm (1).

5. A lifting device for workpiece transportation according to any one of claims 1 to 4, characterized in that: The lower ends of the clamping arm (2) and the suspension arm (1) are both movably connected to a clamping claw (8).

6. A lifting device for workpiece transportation according to claim 5, characterized in that: The clamping jaw (8) is also provided with a hook (10) for hooking a workpiece.

7. A lifting device for workpiece transportation according to claim 6, characterized in that: A contact surface (9) for contacting the upper end surface of a workpiece is also provided above the hook (10).

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