Shaft grabbing and lifting equipment

Abstract

The utility model provides shaft grabbing and lifting equipment, and belongs to the technical field of machinery. The problem that an existing lifting mechanism is complex in structure is solved. The shaft grabbing and lifting equipment comprises a rack, a driving seat and a grabbing mechanism arranged below the driving seat, the grabbing mechanism is in vertical sliding fit with the rack, a supporting spring used for supporting the grabbing mechanism upwards is arranged between the driving seat and the grabbing mechanism, and a telescopic spring, a chain and a chain wheel are sequentially arranged above the driving seat from top to bottom; the axis of the chain wheel is horizontally arranged; a motor for driving the chain wheel to operate is arranged on the rack; the lower end of the chain is meshed with the chain wheel, and the two ends of the telescopic spring are fixedly connected with the upper end of the chain and the machine frame respectively. The shaft grabbing and lifting equipment is simple in structure.

Description

Technical Field

[0001] The utility model belongs to the technical field of machinery and relates to a grasping and lifting device, especially a shaft part grasping and lifting device. Background Art

[0002] A shaft part grasping and lifting device is an important device for grasping, transporting and lifting shaft workpieces in the field of industrial automation. Its structure is like a lifting mechanism for shaft products proposed by the applicant before (application number: 202310976447.1), which includes a bracket, a clamping mechanism movably connected to the bracket, a sliding mechanism for driving the horizontal movement of the clamping mechanism, and a lifting mechanism for driving the vertical movement of the clamping mechanism; the lifting mechanism includes a pulley plate, two pulley groups, two pulley cylinders and a rope; each pulley group includes a pulley frame and several pulleys rotatably connected side by side vertically on the pulley frame. The two pulley groups are arranged horizontally, and the rope is wound between the two pulley groups; the two pulley cylinders are arranged on the pulley plate, and the pulley cylinders drive the two pulley groups to move away from or close to each other; the bottom end of the rope is connected to a support plate.

[0003] The above-mentioned lifting mechanism uses a rope wound between two pulley groups and realizes the lifting function through the action of two pulley cylinders. This structure requires the rope to be wound around multiple pulleys, which not only has a complex structure and is inconvenient to assemble, but also easily causes the rope to loosen, affecting the lifting stability and accuracy. Summary of the Utility Model

[0004] The purpose of the utility model is to address the above problems existing in the prior art and propose a shaft part grasping and lifting device with a simple structure.

[0005] The purpose of the utility model can be achieved by the following technical solutions: A shaft part grasping and lifting device includes a frame, a driving seat, and a material grasping mechanism arranged below the driving seat. The material grasping mechanism is slidably matched with the frame up and down, and a support spring for upwardly supporting the material grasping mechanism is arranged between the driving seat and the material grasping mechanism. It is characterized in that a telescopic spring, a chain, and a sprocket are sequentially arranged from top to bottom above the driving seat; the axis of the sprocket is horizontally arranged, and a motor for driving the sprocket to rotate is arranged on the frame; both the chain and the telescopic spring are vertically arranged, the lower end of the chain is meshed with the sprocket, and both ends of the telescopic spring are fixedly connected to the upper end of the chain and the frame respectively.

[0006] This device only needs to vertically arrange the chain and the telescopic spring, and uses the cooperation of the sprocket and the chain to drive the overall lifting and translation of the material grasping mechanism. In this way, not only is the structure extremely simple, avoiding the complex assembly steps in the prior art and effectively facilitating assembly, but also more reliable working stability is provided.

[0007] In the above-mentioned shaft part grasping and lifting device, a guide wheel facing the sprocket is also rotatably arranged on the above-mentioned frame. The axes of the guide wheel and the sprocket are arranged in parallel, and the side of the chain facing away from the sprocket is pressed against the outer peripheral surface of the guide wheel. The chain is clamped between the guide wheel and the sprocket to ensure that the chain always maintains vertical translation, improving the sliding stability and accuracy of the material grasping mechanism.

[0008] In the above-mentioned shaft part grasping and lifting device, the material grasping mechanism is divided into a control part and a grasping part; the control part includes an upper plate body and a support column vertically fixed on the upper plate body. The upper plate body is slidably connected to the frame up and down. The above-mentioned driving seat is tubular, and the support column is slidably arranged up and down in the driving seat. A support spring is arranged in the driving seat and supports the support column upward;

[0009] The grasping part includes a lower plate body horizontally arranged directly below the upper plate body. The upper plate body and the lower plate body are connected, and columnar electromagnets are vertically fixed at both bottoms of the lower plate body. During use, the material grasping mechanism adsorbs horizontal shaft parts through the electromagnets for material grasping operations, which has the advantages of simple structure and stable operation.

[0010] In the above-mentioned shaft part grasping and lifting device, a proximity switch for controlling the opening of the electromagnet is fixed on the outside of the driving seat, and a bolt is vertically fixed on the upper plate body facing the induction surface of the proximity switch. During use, when the electromagnet contacts the shaft part, as the driving seat continues to move downward, the proximity switch will sense the bolt to turn on the electromagnet, so as to adsorb the shaft part and move upward with the driving seat to achieve the lifting purpose.

[0011] In the above-mentioned shaft part grasping and lifting device, the middle part of the lower plate body is connected to the upper plate body through a vertically arranged ball pin, so that the lower plate body can swing horizontally relative to the upper plate body. Conical springs are vertically arranged on both sides of the ball pin, and the two ends of the conical springs are respectively fixed to the upper plate body and the lower plate body; the bottom of the electromagnet has a concave cavity, and two arc-shaped notches for the shaft part to extend into are arranged on the side walls of the two concave cavities, and the two arc-shaped notches on the same concave cavity are arranged side by side along the arrangement direction of the two electromagnets. With the cooperation of the ball pin and the conical spring, and by using the contact between the shaft part and the inner wall of the arc-shaped notch, the lower plate body can automatically swing slightly to adapt to the shaft part that is not placed correctly, ensuring that the shaft part with a deviation in the placement position can also be stably adsorbed by the electromagnet, and ensuring the working stability of the lifting device.

[0012] In the above-mentioned shaft part grasping and lifting device, a positioning sleeve is vertically fixed at the bottom of the upper plate body. The positioning sleeve is sleeved outside the ball pin, and the two ends of the positioning sleeve are respectively pressed against the upper plate body and the lower plate body. By setting the positioning sleeve, the axial force received by the upper plate body can be transferred from the ball pin to the positioning sleeve, reducing the force on the ball pin and improving the service life and operation stability of the lifting device.

[0013] In the above-mentioned shaft part grasping and lifting device, a cylinder is fixed in the middle of the bottom wall of the lower plate body, and the piston rod of the cylinder is vertically arranged. The setting of the cylinder can make the shaft part break away from the electromagnet faster, overcome the problem of slow demagnetization of the electromagnet, and improve the efficiency.

[0014] Compared with the prior art, the shaft part grasping and lifting device of the present invention has the following advantages:

[0015] 1. This device only needs to vertically arrange the chain and the telescopic spring, and is conducive to the cooperation of the sprocket and the chain to drive the overall lifting and translation of the material grasping mechanism. In this way, not only the structure is extremely simple, avoiding the complex assembly steps in the prior art, effectively facilitating assembly, but also providing more reliable working stability.

[0016] 2. Under the cooperation of the ball pin and the conical spring, and by using the contact between the shaft part and the inner wall of the arc-shaped notch, the lower plate body can automatically swing slightly to adapt to the shaft part that is not placed correctly, ensuring that the shaft part with a deviation in the placement position can also be stably adsorbed by the electromagnet, ensuring the working stability of the lifting device. Description of the Drawings

[0017] Figure 1 is a three-dimensional schematic diagram of the shaft part grasping and lifting device of the present invention.

[0018] Figure 2 is a cross-sectional schematic diagram of the shaft part grasping and lifting device of the present invention.

[0019] Figure 3 is Figure 2 an enlarged schematic diagram of part A in

[0020] Figure 4 is a three-dimensional schematic diagram of the material grasping mechanism.

[0021] Figure 5 is a three-dimensional schematic diagram of the electromagnet.

[0022] In the figure, 1. Frame; 2. Driving seat; 3. Support spring; 4. Telescopic spring; 5. Chain; 6. Sprocket; 7. Motor; 8. Guide wheel; 9. Upper plate body; 10. Support column; 11. Lower plate body; 12. Electromagnet; 12a. Arc-shaped notch; 13. Proximity switch; 14. Bolt; 15. Ball pin; 16. Conical spring; 17. Positioning sleeve; 18. Cylinder. Specific Embodiments

[0023] The following are specific embodiments of the present invention in combination with the drawings, and the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.

[0024] As Figure 1 shown, the shaft part grasping and lifting device of the present invention includes a frame 1, a driving seat 2, and a material grasping mechanism arranged below the driving seat 2.

[0025] Among them,

[0026] The material grabbing mechanism is slidably engaged with the frame 1 up and down, and a support spring 3 for upwardly supporting the material grabbing mechanism is provided between the driving seat 2 and the material grabbing mechanism.

[0027] As Figure 1 and Figure 2 shown, a telescopic spring 4, a chain 5 and a sprocket 6 are successively arranged above the driving seat 2 from top to bottom. Among them, the axis of the sprocket 6 is horizontally arranged, and a motor 7 for driving the sprocket 6 to operate is provided on the frame 1. Both the chain 5 and the telescopic spring 4 are vertically arranged. The lower end of the chain 5 is engaged with the sprocket 6, and both ends of the telescopic spring 4 are fixedly connected to the upper end of the chain 5 and the frame 1 respectively. In an actual product, a rotating shaft is also horizontally rotatably arranged on the frame 1, the sprocket 6 is sleeved and fixed on the rotating shaft, and the motor 7 drives the rotating shaft to rotate to improve the rotational stability of the sprocket 6.

[0028] In this application, the device only needs to vertically arrange the chain 5 and the telescopic spring 4, and is conducive to the cooperation between the sprocket 6 and the chain 5 to drive the overall lifting and translation of the material grabbing mechanism. In this way, not only the structure is extremely simple, avoiding the complex assembly steps in the prior art, effectively facilitating assembly, but also providing more reliable working stability.

[0029] Further illustration, a guide wheel 8 facing the sprocket 6 is also rotatably arranged on the frame 1. The axes of the guide wheel 8 and the sprocket 6 are parallel to each other, and the side of the chain 5 facing away from the sprocket 6 is pressed against the outer peripheral surface of the guide wheel 8. The chain 5 is clamped between the guide wheel 8 and the sprocket 6 to ensure that the chain 5 always maintains vertical translation, improving the sliding stability and accuracy of the material grabbing mechanism.

[0030] In this embodiment,

[0031] The material grabbing mechanism is as follows: The material grabbing mechanism is divided into a control part and a grabbing part.

[0032] The control part includes an upper plate body 9 and a support column 10 vertically fixed on the upper plate body 9. Among them, the upper plate body 9 is slidably connected with the frame 1 up and down; the driving seat 2 is tubular, the support column 10 is slidably arranged up and down in the driving seat 2, and the support spring 3 is arranged in the driving seat 2 and upwardly supports the support column 10.

[0033] Specifically, the upper plate body 9 and the frame 1 are slidably connected with the frame 1 through the cooperation of a linear guide rail and a slider; an annular shoulder is formed at the upper end of the support column 10, the support spring 3 is sleeved on the support column 10, and both ends of the support spring 3 are respectively pressed against the bottom wall of the annular shoulder and the inner wall of the driving seat 2.

[0034] As Figure 3 and Figure 4As shown in the figure, the grasping part includes a lower plate body 11 horizontally arranged directly below the upper plate body 9. The upper plate body 9 is connected to the lower plate body 11, and columnar electromagnets 12 are vertically fixed at both bottom ends of the lower plate body 11. During use, the material grasping mechanism adsorbs the horizontal shaft parts through the electromagnets 12 for material grasping operations, which has the advantages of simple structure and stable operation. Further explanation, a proximity switch 13 for controlling the opening of the electromagnet 12 is fixed on the outside of the driving seat 2, and a bolt 14 is vertically fixed on the upper plate body 9 and arranged facing the sensing surface of the proximity switch 13, and the bolt 14 is directly below the proximity switch 13. During use, when the electromagnet 12 contacts the shaft part, as the driving seat 2 continues to move downward, the proximity switch 13 will sense the bolt 14 to turn on the electromagnet 12, so as to adsorb and hold the shaft part and move upward with the driving seat 2 to achieve the lifting purpose.

[0035] Among them, the proximity switch 13 and its control and wiring methods are all existing, and will not be elaborated here.

[0036] Furthermore, as Figures 3 to 5 shown in the figure, the middle part of the lower plate body 11 is connected to the upper plate body 9 through a vertically arranged ball pin 15 so that the lower plate body 11 can swing horizontally relative to the upper plate body 9. Conical springs 16 are vertically arranged on both sides of the ball pin 15, and both ends of the conical springs 16 are fixedly connected to the upper plate body 9 and the lower plate body 11 respectively. The bottom of the electromagnet 12 has a concave cavity, and two arc-shaped notches 12a for the shaft part to extend into are arranged on the side walls of the two concave cavities, and the two arc-shaped notches 12a on the same concave cavity are arranged side by side along the arrangement direction of the two electromagnets 12, that is, at this time, the two arc-shaped notches 12a on the same concave cavity are symmetrically arranged. Under the cooperation of the ball pin 15 and the conical spring 16, and by using the contact between the shaft part and the inner wall of the arc-shaped notch 12a, the lower plate body 11 can automatically swing slightly to adapt to the shaft parts that are not placed correctly, ensuring that the shaft parts with deviation in the placement position can also be stably adsorbed by the electromagnet 12, and ensuring the working stability of the lifting equipment.

[0037] In the actual product, a positioning sleeve 17 is vertically fixed at the bottom of the upper plate body 9. The positioning sleeve 17 is sleeved outside the ball pin 15, and both ends of the positioning sleeve 17 are respectively pressed against the upper plate body 9 and the lower plate body 11. By setting the positioning sleeve 17, the axial force received by the upper plate body 9 can be transferred from the ball pin 15 to the positioning sleeve 17, reducing the force on the ball pin 15 and improving the service life and operation stability of the lifting equipment. It is preferred that the material of the positioning sleeve 17 is polyurethane. A cylinder 18 is fixed in the middle of the bottom wall of the lower plate body 11, and the piston rod of the cylinder 18 is vertically arranged. The setting of the cylinder 18 can make the shaft part break away from the electromagnet 12 faster, overcoming the problem of slow demagnetization of the electromagnet 12 to improve efficiency.

[0038] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains may make various modifications or supplements to the described specific embodiments or use similar means for substitution, but they will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. A shaft part grasping and lifting device, comprising a frame (1), a driving seat (2) and a material grasping mechanism arranged below the driving seat (2), the material grasping mechanism is slidably matched with the frame (1) up and down, and a support spring (3) for upwardly supporting the material grasping mechanism is arranged between the driving seat (2) and the material grasping mechanism, characterized in that, Above the driving seat (2), a telescopic spring (4), a chain (5) and a sprocket (6) are successively arranged from top to bottom; the axis of the sprocket (6) is horizontally arranged, and a motor (7) for driving the sprocket (6) to operate is arranged on the frame (1); both the chain (5) and the telescopic spring (4) are vertically arranged, the lower end of the chain (5) is engaged with the sprocket (6), and both ends of the telescopic spring (4) are fixedly connected to the upper end of the chain (5) and the frame (1) respectively.

2. The shaft part grasping and lifting device according to claim 1, characterized in that, A guide wheel (8) facing the sprocket (6) is also rotatably arranged on the above-mentioned frame (1), the axes of the guide wheel (8) and the sprocket (6) are arranged in parallel, and the side of the chain (5) facing away from the sprocket (6) is pressed against the outer peripheral surface of the guide wheel (8).

3. The shaft part grasping and lifting device according to claim 1 or 2, characterized in that, The material grasping mechanism is divided into a control part and a grasping part; the control part includes an upper plate body (9) and a support column (10) vertically fixed on the upper plate body (9), the upper plate body (9) is slidably connected to the frame (1) up and down, the above-mentioned driving seat (2) is tubular, the support column (10) is slidably arranged up and down in the driving seat (2), and a support spring (3) is arranged in the driving seat (2) and supports the support column (10) upward; the grasping part includes a lower plate body (11) horizontally arranged directly below the upper plate body (9), the upper plate body (9) is connected to the lower plate body (11), and columnar electromagnets (12) are vertically fixed at the bottoms of both ends of the lower plate body (11).

4. The shaft part grasping and lifting device according to claim 3, characterized in that, A proximity switch (13) for controlling the opening of the electromagnet (12) is fixed on the outside of the driving seat (2), and a bolt (14) is vertically fixed on the upper plate body (9) facing the sensing surface of the proximity switch (13).

5. The shaft part grasping and lifting device according to claim 4, characterized in that The middle part of the lower plate body (11) is connected to the upper plate body (9) through a vertically arranged ball pin (15) so that the lower plate body (11) can swing horizontally relative to the upper plate body (9). Conical springs (16) are vertically arranged on both sides of the ball pin (15), and both ends of the conical spring (16) are fixedly connected to the upper plate body (9) and the lower plate body (11) respectively; the bottom of the electromagnet (12) has a concave cavity, and two arc-shaped notches (12a) for the shaft member to extend into are arranged on the side walls of both concave cavities, and the two arc-shaped notches (12a) on the same concave cavity are arranged side by side along the arrangement direction of the two electromagnets (12).

6. The shaft part grasping and lifting device according to claim 5, characterized in that, A positioning sleeve (17) is vertically fixed at the bottom of the upper plate body (9), the positioning sleeve (17) is sleeved outside the ball pin (15), and both ends of the positioning sleeve (17) are respectively pressed against the upper plate body (9) and the lower plate body (11).

7. The shaft part grasping and lifting device according to claim 3, characterized in that, A cylinder (18) is fixed in the middle of the bottom wall of the lower plate body (11), and the piston rod of the cylinder (18) is vertically arranged.

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