Three-jaw synchronous lifting device

Abstract

The utility model discloses a three-jaw synchronous lifting device which comprises a fixed frame with a plurality of support plates and a movable shaft, and the movable shaft penetrates through the middle part of the fixed frame and is movably arranged along the vertical direction; the movable shaft is sleeved with the connecting plate, the connecting plate synchronously moves along with the movable shaft, a plurality of first movable rods are hinged to the connecting plate, the first movable rods correspond to the supporting plates in number and position, second movable rods are hinged to the other ends of the first movable rods, and hooking parts are arranged at the other ends of the second movable rods; the second movable rod is hinged to the end, away from the movable shaft, of the supporting plate. When the movable shaft moves upwards, the connecting plate can drive the first movable rod and the second movable rod which are hinged to the connecting plate to rotate at the hinged position, so that the hooking part is close to a workpiece and stretches into the position below a lug of the workpiece to clamp the workpiece, and then the whole device is lifted to achieve lifting. And by setting the proper number of the movable clamping arms, the clamping device can be suitable for workpieces with various lug laps, and is high in universality.

Description

Technical Field

[0001] The utility model belongs to the technical field of motor component lifting, in particular to a three-claw synchronous lifting device. Background Art

[0002] At present, in the processing of some parts of motors, the workpieces need to be lifted due to their heavy weight. For example, the base of a motor needs to be lifted and clamped during processing.

[0003] However, due to process requirements, the inner hole of this type of workpiece cannot be used as a lifting positioning point, and the workpiece can only be positioned and lifted using the outside of the workpiece. Some machine bases have four or six lugs, which can be lifted using a two-point symmetrical lifting device. Other workpieces only have three lugs or an odd number of lugs, making it inconvenient to use a symmetrical lifting device to lift the workpiece. Utility Model Content

[0004] The present invention aims to solve the problems in the prior art and proposes the following technical solutions:

[0005] The utility model provides a three-claw synchronous lifting device, comprising:

[0006] A fixed frame having a plurality of support plates,

[0007] A movable shaft, the movable shaft passes through the middle of the fixing frame and is movably arranged in a vertical direction;

[0008] The connecting plate is sleeved on the outside of the movable shaft and moves synchronously with the movable shaft.

[0009] A plurality of movable rods 1 are hingedly provided on the connecting plate, and the movable rods 1 are arranged corresponding to the number and position of the support plates. The other end of the movable rod 1 is hingedly provided with a movable rod 2, and the other end of the movable rod 2 is provided with a hook portion, and the movable rod 2 is hinged to the end of the support plate away from the movable axis.

[0010] As a preferred embodiment of the above technical solution, it further includes a limit block, which is rotatably arranged in the middle of the fixed frame and sleeved on the outside of the movable shaft. The limit block is provided with a limit groove 1 and a limit groove 2 running through its side wall, and the limit groove 1 and the limit groove 2 are connected. A limit pin is provided on the movable shaft at a position corresponding to the limit block. When the limit pin is located in the limit groove 1, the movable shaft can slide in the vertical direction relative to the fixed frame. When the limit pin is located in the limit groove 2, the movable shaft cannot slide.

[0011] As a preferred embodiment of the above technical solution, the fixing frame is provided with three support plates.

[0012] As a preferred embodiment of the above technical solution, a lifting ring is provided at one end of the movable shaft away from the fixing frame.

[0013] As a preferred embodiment of the above technical solution, sleeve one and sleeve two are fixedly provided on the outer side wall of the movable shaft, and the connecting plate is sleeved on the movable shaft at a position between sleeve one and sleeve two.

[0014] As a preferred embodiment of the above technical solution, a hole is provided in the middle of the fixing frame, and the bottom end of the movable shaft is slidably inserted into the hole.

[0015] The beneficial effects of the utility model are:

[0016] When the movable axis of the present invention moves upward, the connecting plate will drive the movable rod 1 and the movable rod 2 hinged to it to rotate at the hinge, so that the hook portion approaches the workpiece and extends under the ear of the workpiece to clamp the workpiece and then lift the entire device to achieve lifting; by setting the appropriate number of movable clamping arms, it can be applicable to workpieces with a variety of ear straps, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure shows a schematic diagram of a non-lifting state of the lifting device in the embodiment;

[0018] Figure 2 The figure shows a schematic diagram of the hoisting state of the hoisting device in the embodiment;

[0019] Figure 3 Shown is a schematic diagram of a fixing frame in an embodiment (top view);

[0020] Figure numerals: 10, fixing frame; 11, hole; 12, support plate; 20, movable shaft; 21, sleeve 1; 22, sleeve 2; 31, connecting plate; 32, movable rod 1; 33, movable rod 2; 331, hooking part; 41, limiting block; 42, limiting groove 1; 43, limiting groove 2; 44, limiting pin; 50, lifting ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0022] Example

[0023] like Figure 1 、 Figure 2 、 Figure 3 As shown, Figure 1 The figure shows a schematic diagram of a non-lifting state of the lifting device in the embodiment; Figure 2 The figure shows a schematic diagram of the hoisting state of the hoisting device in the embodiment; Figure 3 Shown is a schematic diagram of the fixing frame in the embodiment (top view);

[0024] The device includes:

[0025] A fixing frame 10 having a plurality of support plates 12,

[0026] A movable shaft 20 passes through the middle of the fixing frame 10 and is movably arranged in the vertical direction;

[0027] The connecting plate 31 is sleeved on the outside of the movable shaft 20 and moves synchronously with the movable shaft 20.

[0028] A plurality of movable rods 32 are hingedly provided on the connecting plate 31. The movable rods 32 are arranged in accordance with the number and position of the support plate 12. The other end of the movable rod 1 32 is hingedly provided with a movable rod 2 33. The other end of the movable rod 2 33 is provided with a hook portion 331, and the movable rod 2 33 is hinged to the end of the support plate 12 away from the movable axis 20.

[0029] Specifically, the movable rod 1 32 and the movable rod 2 33 form a movable clamping arm, and the support plate 12 of the fixed frame 10 plays the role of installing the movable clamping arm. When hoisting, the fixed frame 10 is placed on the upper end surface of the workpiece so that the movable clamping arm is located on the side of the workpiece;

[0030] To cope with a workpiece having three lugs, the fixing frame 10 is provided with three support plates 12 , and its corresponding movable clamping arms are provided with three groups;

[0031] Through the movable shaft 20 Figure 1 The vertical movement can drive the connecting plate 31 to move in the vertical direction; when moving upward, the connecting plate 31 will drive the movable rod 1 32 and the movable rod 2 33 hinged thereto to rotate at the hinge, so that the hook portion 331 approaches the workpiece and extends under the ear of the workpiece to clamp the workpiece and then lift the entire device to achieve lifting, that is, Figure 2 In this state, further downward movement will cause the hook portion 331 to move away from the ear of the workpiece, releasing the clamping state, such as Figure 1 Shown in non-suspended position.

[0032] like Figure 1 、 Figure 2 As shown, Figure 1 The figure shows a schematic diagram of a non-lifting state of the lifting device in the embodiment; Figure 2 The figure shows a schematic diagram of the hoisting state of the hoisting device in the embodiment;

[0033] The movable shaft 20 further includes a limit block 41, which is rotatably arranged in the middle of the fixed frame 10 and sleeved on the outside of the movable shaft 20. The limit block 41 is provided with a limit groove 1 42 and a limit groove 2 43 which pass through its side wall. The limit groove 1 42 and the limit groove 2 43 are connected. A limit pin 44 is provided on the movable shaft 20 at a position corresponding to the limit block 41. When the limit pin 44 is located in the limit groove 1 42, the movable shaft 20 can slide in the vertical direction relative to the fixed frame 10. When the limit pin 44 is located in the limit groove 2 43, the movable shaft 20 cannot slide.

[0034] By rotating the limit block 41, the limit pin 44 can switch back and forth between the limit slot 1 42 and the limit slot 2 43. The limit slot 1 42 is a vertically opened slot body, and the limit slot 2 43 is a card slot shape that matches the shape of the limit pin 44. When the limit pin 44 is located in the limit slot 1 42, the limit pin 44 can move along the opening direction of the limit slot 1 42, that is, it can enable the movable shaft 20 to move in the vertical direction; when the limit pin 44 is located in the limit slot 2 43, the limit pin 44 is restricted and cannot move in the vertical direction, that is, the position of the movable shaft 20 is fixed.

[0035] A lifting ring 50 is provided at one end of the movable shaft 20 away from the fixing frame 10 .

[0036] The lifting ring 50 is connected to an external lifting device to achieve lifting.

[0037] A sleeve 1 21 and a sleeve 22 are fixedly provided on the outer side wall of the movable shaft 20 , respectively. The connecting plate 31 is sleeved on the movable shaft 20 between the sleeve 1 21 and the sleeve 22 .

[0038] A step surface is formed between the first sleeve 21 and the second sleeve 22 to serve as a mounting surface for the limiting connecting plate 31 .

[0039] A hole 11 is provided in the middle of the fixing frame 10 , and the bottom end of the movable shaft 20 is slidably inserted into the hole 11 .

[0040] Working principle: When the device is in the initial state, the limit pin 44 is adjusted to be located in the limit slot 2 43. At this time, the movable shaft 20 is restricted and fixed and cannot move in the vertical direction, and the hooking portion 331 of the movable rod 2 33 is in a state of being far away from each other. When the workpiece needs to be hoisted, the fixed frame 10 is first placed on the upper end face of the workpiece, and the hooking portion 331 of the movable rod 2 33 corresponds to the position below the ear of the workpiece, and then the limit block 41 is rotated to make the limit pin 44 transfer from the limit slot 2 43 to the limit slot 1 42, and then connected to the external lifting equipment through the lifting ring 50 to lift the device. During this process, the movable shaft 20 moves upward, and the connecting plate 31 drives the movable rod 1 32 and the movable rod 2 33 hinged to it to rotate at the hinge, so that the hooking portion 331 extends into the ear of the workpiece to clamp the workpiece and lift the workpiece as a whole to achieve hoisting.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same.

Claims

1. Three-claw synchronous lifting device, characterized in that: include: A fixed frame (10) having a plurality of support plates (12), A movable shaft (20), the movable shaft (20) passes through the middle of the fixing frame (10) and is movably arranged in a vertical direction; A connecting plate (31) is sleeved on the outside of the movable shaft (20) and moves synchronously with the movable shaft (20). A plurality of movable rods (32) are hingedly provided on the connecting plate (31), and the movable rods (32) are arranged in accordance with the number and position of the support plate (12). The other end of the movable rod (32) is hingedly provided with a movable rod (33), and the other end of the movable rod (33) is provided with a hook portion (331), and the movable rod (33) is hingedly connected to the end of the support plate (12) away from the movable shaft (20).

2. The three-claw synchronous lifting device according to claim 1, characterized in that: The invention also includes a limit block (41), wherein the limit block (41) is rotatably arranged in the middle of the fixed frame (10) and sleeved on the outside of the movable shaft (20), and the limit block (41) is provided with a limit groove 1 (42) and a limit groove 2 (43) penetrating the side wall thereof, and the limit groove 1 (42) and the limit groove 2 (43) are connected, and a limit pin (44) is provided on the movable shaft (20) at a position corresponding to the limit block (41), and when the limit pin (44) is located in the limit groove 1 (42), the movable shaft (20) can slide in the vertical direction relative to the fixed frame (10), and when the limit pin (44) is located in the limit groove 2 (43), the movable shaft (20) cannot slide.

3. The three-claw synchronous lifting device according to claim 2, characterized in that: The fixing frame (10) is provided with three supporting plates (12).

4. The three-claw synchronous lifting device according to claim 1, characterized in that: A lifting ring (50) is provided at one end of the movable shaft (20) away from the fixing frame (10).

5. The three-claw synchronous lifting device according to claim 1, characterized in that: A sleeve 1 (21) and a sleeve 2 (22) are fixedly provided on the outer side wall of the movable shaft (20), and the connecting plate (31) is sleeved on the movable shaft (20) at a position between the sleeve 1 (21) and the sleeve 2 (22).

6. The three-claw synchronous lifting device according to claim 1, characterized in that: A hole (11) is provided in the middle of the fixing frame (10), and the bottom end of the movable shaft (20) is slidably inserted into the hole (11).

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