Crank arm lifting device with clamping function

Abstract

The utility model belongs to the technical field of clamps, and particularly relates to a crank arm lifting device with a clamping function, which comprises a vertical frame, a first servo motor is fixedly connected to the outer wall of the top of the vertical frame through a screw, a screw rod is fixedly connected to an output shaft of the first servo motor through a coupler, and a crank arm frame is screwed to the outer wall of the screw rod. A second servo motor is fixedly connected to the outer wall of one end of the crank arm frame through a screw, a connecting rod is fixedly connected to an output shaft of the second servo motor, and a clamping and fixing mechanism is arranged on the outer wall of one end of the connecting rod. The first servo motor at the top of the vertical frame drives the lead screw to be matched with the sliding plate on the crank arm frame to slide in an attached mode with the vertical frame, stable lifting of the crank arm frame is achieved, the second servo motor drives the connecting rod to drive the clamping mechanism to rotate, and the problem that angle adjustment is not flexible in actual operation is solved. According to the linkage structure, the four clamping jaws can act synchronously, clamping force is evenly distributed, and the linkage structure can adapt to workpieces of different shapes.

Description

Technical Field

[0001] This utility model relates to the field of clamping technology, and in particular to a crank arm lifting device with clamping function. Background Technology

[0002] Articulated boom lifts are devices used in the field of clamping technology to achieve lifting and positioning of objects. They typically achieve vertical height adjustment through the bending structure of the robotic arm, while working in conjunction with a clamping mechanism to grasp and secure the workpiece. They are widely used in industrial assembly, material handling, and other scenarios. Traditional articulated boom lifts often rely on a single drive structure, which has limitations in lifting accuracy, angle adjustment range, and clamping stability, making it difficult to meet the operational requirements of complex working conditions.

[0003] Articulated boom lifts have some shortcomings in actual operation:

[0004] First, the angle adjustment mechanism lacks flexibility. The clamping mechanism of the traditional device cannot be precisely adjusted by changing the tilt angle, which limits the ability to operate at multiple angles.

[0005] In addition, the clamping mechanism is simple in design, mostly driven by manual or single cylinder, and lacks a linkage structure, resulting in uneven clamping force and difficulty in adapting to workpieces of different shapes. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a crank arm lifting device with clamping function, which overcomes the shortcomings of the prior art and effectively solves the problems of insufficient flexibility of the angle adjustment mechanism and simple design of the clamping mechanism.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A boom lift device with clamping function includes a vertical frame. A first servo motor is fixedly connected to the top outer wall of the vertical frame by screws, and a lead screw is fixedly connected to the output shaft of the first servo motor by a coupling. A boom frame is screwed onto the outer wall of the lead screw, and a second servo motor is fixedly connected to the outer wall of one end of the boom frame by screws. A connecting rod is fixedly connected to the output shaft of the second servo motor, and a clamping mechanism is provided on the outer wall of one end of the connecting rod.

[0009] Preferably, the clamping mechanism includes a mounting plate, a cylinder, a lifting plate, grippers, and a connecting rod. The mounting plate is disposed at one end of the mounting plate. The cylinder is fixedly connected to the top outer wall of the mounting plate by screws. The lifting plate is fixedly connected to the piston rod of the cylinder. The grippers are hinged to the peripheral outer wall of the mounting plate. The connecting rod is hinged between the grippers and the lifting plate.

[0010] Preferably, a U-shaped frame is welded between the connecting rod and the mounting plate.

[0011] Preferably, a sliding plate is welded to one end of the articulated boom frame near the vertical frame, and the sliding plate is in close contact with one side of the outer wall of the vertical frame.

[0012] Preferably, handrails are welded to one side and one outer wall of the vertical frame.

[0013] Preferably, a base is welded to the bottom outer wall of the vertical frame, and an array of casters is installed on the bottom outer wall of the base.

[0014] Preferably, the tilt angle of the second servo motor is 45°.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. The articulated boom lifting device with clamping function in this design achieves smooth lifting of the articulated boom by driving the lead screw of the first servo motor at the top of the vertical frame, which cooperates with the sliding plate on the articulated boom to slide against the vertical frame. At the same time, the second servo motor drives the connecting rod to rotate the clamping mechanism, which can realize 0-360° circumferential angle adjustment, thus solving the problem of inflexible angle adjustment in actual operation.

[0017] 2. The articulated boom lifting device with clamping function designed in this invention has a clamping mechanism in which the cylinder pushes the lifting plate to move up and down, and the connecting rod drives the clamps to open and close around the hinge point of the mounting plate. This linkage structure can make the four clamps move synchronously and the clamping force is evenly distributed, which helps to adapt to workpieces of different shapes. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the clamping mechanism of the articulated boom lifting device with clamping function proposed in this utility model when it is set vertically.

[0019] Figure 2 This is a schematic diagram of the overall structure of the clamping mechanism of the articulated boom lifting device with clamping function proposed in this utility model when it is arranged horizontally.

[0020] Figure 3 This is a schematic diagram of the clamping mechanism of a clamshell lifting device with clamping function proposed in this utility model when the clamping jaws are open.

[0021] Figure 4 This is a schematic diagram of the clamping mechanism of a crank arm lifting device with clamping function proposed in this utility model when the clamping jaws are closed.

[0022] In the diagram: 1. Vertical frame; 2. First servo motor; 3. Lead screw; 4. Articulated boom; 5. Second servo motor; 6. Connecting rod; 7. Clamping mechanism; 71. Mounting plate; 72. Cylinder; 73. Lifting plate; 74. Gripper; 75. Connecting rod; 8. U-shaped frame; 9. Slide plate; 10. Handrail; 11. Base; 12. Casters. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Reference Figures 1-4 Example 1: A boom lift device with clamping function includes a vertical frame 1. The top outer wall of the vertical frame 1 is fixedly connected to a first servo motor 2 by screws, and the output shaft of the first servo motor 2 is fixedly connected to a lead screw 3 by a coupling. A boom frame 4 is screwed onto the outer wall of the lead screw 3, and a second servo motor 5 is fixedly connected to the outer wall of one end of the boom frame 4 by screws. The tilt angle of the second servo motor 5 is 45°.

[0025] The top of the vertical frame 1 is fixed with screws to the first servo motor 2, and its output shaft is connected to the lead screw 3 through a rigid coupling. The outer wall of the lead screw 3 is screwed to the internal thread hole of the boom 4. The end of the boom 4 near the vertical frame 1 is welded with a sliding plate 9. The sliding plate 9 is clearance-fitted with the surface of the vertical frame 1 to ensure the stability of the boom 4 when it is raised and lowered.

[0026] In this embodiment, the first servo motor 2 at the top of the vertical frame 1 drives the lead screw 3, which, together with the sliding plate 9 on the boom 4 and the vertical frame 1, achieves smooth lifting and lowering of the boom 4. At the same time, the second servo motor 5 drives the connecting rod 6 to rotate the clamping mechanism 7, which can achieve circumferential angle adjustment from 0 to 360°, thus solving the problem of inflexible angle adjustment in actual operation.

[0027] In embodiment 2, the output shaft of the second servo motor 5 is fixedly connected to a connecting rod 6, and a clamping mechanism 7 is provided on the outer wall of one end of the connecting rod 6. The clamping mechanism 7 includes a mounting plate 71, a cylinder 72, a lifting plate 73, a gripper 74, and a connecting rod 75. The mounting plate 71 is located at one end of the mounting plate 71. The cylinder 72 is fixedly connected to the top outer wall of the mounting plate 71 by screws. The lifting plate 73 is fixedly connected to the piston rod of the cylinder 72. The gripper 74 is hinged to the peripheral outer wall of the mounting plate 71. The connecting rod 75 is hinged between the gripper 74 and the lifting plate 73.

[0028] The second servo motor 5 is fixed to the front end of the articulated boom 4, and its output shaft is connected to the connecting rod 6. The other end of the connecting rod 6 is welded to the mounting plate 71 through a U-shaped frame 8. In the clamping mechanism 7, the cylinder 72 is vertically mounted on the top of the mounting plate 71. The lower end of the piston rod of the cylinder 72 is fixed to the lifting plate 73, and the lifting plate 73 is hinged to the gripper 74 through four connecting rods 75. When the piston rod of the cylinder 72 extends, it drives the lifting plate 73 to move downward, and the connecting rods 75 push the gripper 74 to rotate around the hinge point around the perimeter of the mounting plate 71, so that the gripper 74 moves from the open state to the closed clamping state.

[0029] In this embodiment, when the cylinder 72 pushes the lifting plate 73 to move up and down in the clamping mechanism 7, the connecting rod 75 drives the gripper 74 to open and close around the hinge point of the mounting plate 71. This linkage structure can make the four grippers 74 move synchronously and the clamping force is evenly distributed, which helps to adapt to workpieces of different shapes.

[0030] A U-shaped frame 8 is welded between the connecting rod 6 and the mounting plate 71. A sliding plate 9 is welded to one end of the curved boom 4 near the vertical frame 1, and the sliding plate 9 is in close contact with the outer wall of one side of the vertical frame 1.

[0031] Handrails 10 are welded to one side and one outer wall of the vertical frame 1. A base 11 is welded to the bottom outer wall of the vertical frame 1, and an array of casters 12 are installed on the bottom outer wall of the base 11.

[0032] The casters 12 at the bottom of the base 11, together with the handrails 10 of the vertical frame 1, can reduce the thrust required when the device moves on a flat surface. Compared with the traditional fixed base 11, this improves the movement efficiency and meets the needs of multi-station operations in the workshop.

[0033] Working principle:

[0034] Lifting process: Start the first servo motor 2, whose output shaft drives the lead screw 3 to rotate. Due to the screw connection, the articulated boom 4 moves up and down along the lead screw 3. At the same time, the slide plate 9 slides and guides on the surface of the vertical frame 1 to ensure a smooth lifting process.

[0035] Angle adjustment and clamping action: The second servo motor 5 drives the connecting rod 6 to rotate according to the operation requirements, which in turn drives the clamping mechanism 7 to rotate around the output shaft axis of the second servo motor 5. The 45° tilt installation angle allows the clamping mechanism 7 to obtain a larger working range in the pitch direction. When it is necessary to clamp the workpiece, the piston rod of the cylinder 72 pushes the lifting plate 73 to move down, and the connecting rod 75 converts the vertical displacement into the rotational motion of the gripper 74, so that the gripper 74 closes to clamp the workpiece; conversely, the gripper 74 opens.

[0036] Movement and positioning: Pushing the handle 10 and the casters 12 of the base 11 allows the device to move freely in the horizontal plane. After reaching the designated work position, the brake structure of the casters 12 is locked to ensure that the device is fixed.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A boom lift device with clamping function, comprising a vertical frame (1), characterized in that, The top outer wall of the vertical frame (1) is fixedly connected to a first servo motor (2) by screws, and the output shaft of the first servo motor (2) is fixedly connected to a lead screw (3) by a coupling. A crank arm frame (4) is screwed onto the outer wall of the lead screw (3), and a second servo motor (5) is fixedly connected to the outer wall of one end of the crank arm frame (4) by screws. A connecting rod (6) is fixedly connected to the output shaft of the second servo motor (5), and a clamping mechanism (7) is provided on the outer wall of one end of the connecting rod (6).

2. The boom lift device with clamping function according to claim 1, characterized in that, The clamping mechanism (7) includes a mounting plate (71), a cylinder (72), a lifting plate (73), a gripper (74), and a connecting rod (75). The mounting plate (71) is located at one end of the mounting plate (71). The cylinder (72) is fixedly connected to the top outer wall of the mounting plate (71) by screws. The lifting plate (73) is fixedly connected to the piston rod of the cylinder (72). The gripper (74) is hinged to the peripheral outer wall of the mounting plate (71). The connecting rod (75) is hinged between the gripper (74) and the lifting plate (73).

3. The boom lift device with clamping function according to claim 1, characterized in that, A U-shaped frame (8) is welded between the connecting rod (6) and the mounting plate (71).

4. The boom lift device with clamping function according to claim 1, characterized in that, The articulated boom (4) has a sliding plate (9) welded to one end near the vertical frame (1), and the sliding plate (9) is in close contact with the outer wall of one side of the vertical frame (1).

5. A boom lift device with clamping function according to claim 1, characterized in that, Handrails (10) are welded to one side and one outer wall of the vertical frame (1).

6. A boom lift device with clamping function according to claim 1, characterized in that, The bottom outer wall of the vertical frame (1) is welded with a base (11), and the bottom outer wall of the base (11) is equipped with an array of universal wheels (12).

7. A boom lift device with clamping function according to claim 1, characterized in that, The tilt angle of the second servo motor (5) is 45°.

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