Lifting device of falling ball impact testing machine

Abstract

The utility model discloses a lifting device of a falling ball impact testing machine, which relates to the technical field of falling ball impact testing machines and comprises a bottom plate, a lifting frame and a lifting seat, a wiping mechanism is arranged outside an electromagnet, a transmission mechanism is arranged outside the wiping mechanism, and the lifting mechanism comprises a lead screw and a nut seat in threaded connection with a lead screw rod body. The nut seat is fixedly connected with the lifting seat, a motor is installed at the top of the lifting frame, and an output shaft of the motor rotationally penetrates into the lifting frame and is fixedly connected with the top end of the lead screw; through the arrangement of the wiping mechanism, when the lifting mechanism acts on the lifting seat to carry the electromagnet to move downwards as a whole, the transmission mechanism can act on the rotating ring in the wiping mechanism to rotate for a certain time, so that the wiping plate wipes the adsorption surface of the electromagnet in the rotating process of the rotating ring; therefore, dust and impurities on the adsorption surface of the electromagnet are automatically cleaned, and the using effect of the electromagnet is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of falling ball impact testing machines, in particular to a lifting device for a falling ball impact testing machine. Background Art

[0002] The quality of grinding balls is not only reflected in conventional indicators such as composition and hardness, but also in their impact fatigue life, which can well reflect their tendency to break and peel during use.

[0003] At present, the drop ball impact tester is one of the best equipment for testing the impact fatigue life of wear-resistant balls. It is mainly composed of an electromagnet and a screw lifter. First, the electromagnet is used to fix and adsorb the wear-resistant ball from a low position, and then the screw lifter is used to lift the wear-resistant ball to a fixed height. After the wear-resistant ball is lifted to the fixed height, the electromagnet is turned off to release its fixed adsorption effect on the wear-resistant ball, and the wear-resistant ball falls to the ground, thereby testing the impact drop effect of the grinding ball at this height.

[0004] However, the electromagnets of existing falling ball impact testers are mostly used externally, and their magnetic adsorption surfaces are often prone to adsorbing dust and impurities in the air. Once a large amount of dust is adsorbed, it is very easy to reduce the electromagnet's fixed adsorption effect on the wear-resistant ball, affecting practicality. Utility Model Content

[0005] In order to solve the above technical problems, a lifting device for a falling ball impact testing machine is provided, which solves the problem that the electromagnets of the falling ball impact testing machines in the existing technology are mostly used externally, and their magnetic adsorption surfaces are often easy to adsorb dust and impurities in the air. Once a large amount of dust is adsorbed, it is very easy to reduce the fixed adsorption effect of the electromagnet on the wear-resistant balls, affecting practicality.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a lifting device for a falling ball impact testing machine, comprising a base plate, a lifting frame vertically fixed to the base plate in the shape of a rectangular frame, and a lifting seat slidably arranged on one side of the lifting frame, an electromagnet is installed on the bottom surface of the lifting seat, a lifting mechanism is arranged on the inner side of the lifting frame, a wiping mechanism for cleaning the adsorption surface of the electromagnet is arranged on the outside of the electromagnet, and a transmission mechanism is arranged outside the wiping mechanism;

[0007] The lifting mechanism includes a lead screw that is vertically rotatable and arranged between the inner walls of the two ends of the lifting frame, and a nut seat that is threadedly connected to the lead screw body, the nut seat is fixedly connected to the lifting seat, and a motor is installed on the top of the lifting frame, and the output shaft of the motor rotates and penetrates into the lifting frame and is fixedly connected to the top end of the lead screw;

[0008] The wiping mechanism includes a rotating ring that is cylindrically rotatable and arranged on the bottom surface of the lifting seat, and a wiping plate arranged below the rotating ring. The bottom end surface of the rotating ring is flush with the adsorption surface of the electromagnet. One end of the wiping plate is detachably connected to the bottom end surface of the rotating ring by a bolt, and the other end of the wiping plate faces the center of the rotating ring.

[0009] Preferably, the transmission mechanism includes a transmission column vertically arranged on the side of the rotating ring, a mounting bracket fixed on the top surface of the nut seat in an inverted U shape, and a driven column vertically rotatably arranged on the inner wall of the top end of the mounting bracket, one end of the transmission column is fastened with a transmission gear, and a transmission gear plate engaged with the transmission gear is fastened with the outer wall of the rotating ring, the other end of the transmission column rotates through the lifting seat and is connected to the driven column by a driven belt, and the screw is located on the inner side of the driven belt.

[0010] Preferably, the transmission mechanism also includes a notch opened at one end of the nut seat away from the lifting seat, an active rod rotatably arranged between the inner walls on both sides of the notch, and a driving gear tightly sleeved on the rod body of the active rod, and an active tooth plate meshing with the driving gear is slidably provided on the side of the nut seat away from the lifting seat, and the bottom end of the driven column is connected to the rod body of the active rod through a bevel gear transmission.

[0011] Preferably, a fixed ring is provided on the inner side of the rotating ring and is fixed vertically to the top surface of the lifting seat. A torsion spring is sleeved on the outer wall of the fixed ring. One end of the torsion spring is fixedly connected to the rotating ring, and the other end of the torsion spring is fixedly connected to the outer wall of the fixed ring.

[0012] Preferably, an electric telescopic rod is installed on the bottom surface of the base plate, a movable seat is fixed to the telescopic end of the electric telescopic rod, and a connecting rod is fixed between the movable seat and the active gear plate.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] (1) Through the setting of the wiping mechanism, when the lifting seat carrying the electromagnet moves downward as a whole by utilizing the lifting mechanism, the transmission mechanism can cause the rotating ring in the wiping mechanism to rotate for a certain period of time, thereby causing the wiping plate to wipe the adsorption surface of the electromagnet during the rotation of the rotating ring, thereby automatically cleaning the dust and impurities on the adsorption surface of the electromagnet and improving the use effect of the electromagnet.

[0015] (2) Through the setting of the torsion spring, when the active gear passes through the active tooth plate in advance and provides rotational force for the rotating ring and the wiper plate as a whole, the rotating rotating ring can synchronously twist the deformation of the torsion spring. By utilizing the elastic force of the torsion spring, when the nut seat, the lifting seat and the electromagnet continue to descend as a whole and the active gear passes through the active tooth plate, the rotational force on the rotating ring disappears, and the torsion spring can act on the rotating ring and the wiper plate as a whole to automatically rotate, reset the wiper plate, and thus avoid the wiper plate from blocking the surface of the electromagnet and affecting the adsorption effect of the electromagnet on the wear-resistant balls. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of one side of the utility model;

[0017] Figure 2 For this utility model Figure 1 Schematic diagram of the structure at A in the middle;

[0018] Figure 3 This is a schematic diagram of the other side structure of the utility model as a whole;

[0019] Figure 4 This is a schematic diagram of the partial internal structure of the utility model;

[0020] Figure 5 For this utility model Figure 4 Schematic diagram of the structure at B in the middle;

[0021] Figure 6 For this utility model Figure 4 Schematic diagram of the structure at point C in the middle.

[0022] The numbers in the figure are:

[0023] 1. Base plate; 2. Lifting frame; 3. Lifting seat; 4. Electromagnet; 5. Nut seat; 6. Lead screw; 7. Motor; 8. Rotating ring; 9. Wiper plate; 10. Transmission gear plate; 11. Transmission column; 12. Transmission gear; 13. Mounting frame; 14. Driven column; 15. Driven belt; 16. Active rod; 17. Active gear; 18. Active gear plate; 19. Movable seat; 20. Connecting rod; 21. Electric telescopic rod; 22. Fixed ring; 23. Torsion spring. DETAILED DESCRIPTION

[0024] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0025] Reference Figure 1-6As shown, a lifting device for a falling ball impact tester includes a base plate 1, a lifting frame 2 vertically fixed to the base plate 1 in the shape of a rectangular frame, and a lifting seat 3 slidably arranged on one side of the lifting frame 2. An electromagnet 4 is installed on the bottom surface of the lifting seat 3, and a lifting mechanism is provided on the inner side of the lifting frame 2.

[0026] The lifting mechanism includes a lead screw 6 that is vertically rotated and arranged between the inner walls of the two ends of the lifting frame 2, and a nut seat 5 that is threadedly connected to the rod of the lead screw 6. The nut seat 5 is fixedly connected to the lifting frame 3. A motor 7 is installed on the top of the lifting frame 2. The output shaft of the motor 7 rotates and penetrates into the lifting frame 2 and is fixedly connected to the top of the lead screw 6.

[0027] When in use, the motor 7 is turned on in advance, and the output shaft of the motor 7 drives the screw 6, so that the nut seat 5 descends on the inner side of the lifting frame 2 under the threaded structure, so that the lifting seat 3 carries the electromagnet 4 to fall close to the wear-resistant ball. When the electromagnet 4 falls to a low place, the electromagnet 4 is turned on, and the electromagnet 4 can fix and adsorb the wear-resistant ball. Then, the motor 7 is used again to make the screw 6 rotate in the opposite direction. Similarly, the nut seat 5 carries the lifting seat 3 to slide upward under the threaded structure, so that the electromagnet 4 lifts the wear-resistant ball to a certain height, and then turns off the electromagnet 4 to release its fixed adsorption effect on the wear-resistant ball. The wear-resistant ball can fall under gravity and impact the ground, so as to detect the impact and falling effect of the grinding ball at this high place.

[0028] Further, refer to Figure 4 As shown, it is worth noting that the outside of the electromagnet 4 is provided with a wiping mechanism for cleaning the adsorption surface of the electromagnet 4, and a transmission mechanism is provided outside the wiping mechanism;

[0029] The wiping mechanism includes a rotating ring 8 that is rotatably arranged on the bottom surface of the lifting seat 3 and a wiping plate 9 that is arranged below the rotating ring 8. The bottom end surface of the rotating ring 8 is flush with the adsorption surface of the electromagnet 4. One end of the wiping plate 9 is detachably connected to the bottom end surface of the rotating ring 8 by a bolt, and the other end of the wiping plate 9 is directed toward the center of the rotating ring 8.

[0030] Through the setting of the wiping mechanism, as shown above, when the lifting seat 3 carrying the electromagnet 4 is moved downward as a whole by the lifting mechanism, the transmission mechanism can cause the rotating ring 8 in the wiping mechanism to rotate for a certain period of time, thereby causing the wiping plate 9 to wipe the adsorption surface of the electromagnet 4 during the rotation of the rotating ring 8, thereby automatically cleaning the dust and impurities on the adsorption surface of the electromagnet 4 and improving the use effect of the electromagnet 4;

[0031] In addition, the wiper plate 9 is detachably connected to the bottom section of the rotating ring 8 by bolts, which makes it easy for manual removal and replacement of the wiper plate 9 on a regular basis to prevent the wiper plate 9 from being used for a long time, causing its surface to be seriously contaminated and reducing the cleaning effect on the adsorption surface of the electromagnet 4.

[0032] Further, refer to Figure 4-6As shown, the transmission mechanism includes a transmission column 11 vertically arranged on the side of the rotating ring 8, a mounting frame 13 fixed to the top surface of the nut seat 5 in an inverted U shape, and a driven column 14 vertically rotatably arranged on the inner wall of the top end of the mounting frame 13. One end of the transmission column 11 is tightly sleeved with a transmission gear 12, and a transmission toothed disc 10 meshing with the transmission gear 12 is tightly sleeved on the outer wall of the rotating ring 8. The other end of the transmission column 11 rotates through the lifting seat 3 and is connected to the driven column 14 through a driven belt 15, and the lead screw 6 is located on the inner side of the driven belt 15.

[0033] The transmission mechanism also includes a notch formed at the end of the nut seat 5 away from the lifting seat 3, an active rod 16 rotatably arranged between the inner walls on both sides of the notch, and a driving gear 17 tightly sleeved on the rod body of the active rod 16. A driving toothed plate 18 meshing with the driving gear 17 is slidably provided on the side of the nut seat 5 away from the lifting seat 3. The bottom end of the driven column 14 is connected to the rod body of the active rod 16 through a bevel gear transmission.

[0034] When the lifting mechanism acts to lower the nut seat 5, the lifting seat 3 and the electromagnet 4 as a whole, the driving gear 17 in the transmission mechanism can pass through the active tooth plate 18 in advance, so that the two are engaged, the active rod 16 is forced to rotate and the driven column 14 is driven by the bevel gear, so that the driven column 14 is driven by the driven belt 15 during the rotation process. The transmission column 11 is driven, prompting the transmission gear 12 to engage with the transmission toothed disc 10, providing rotational force for the rotating ring 8 and the wiper plate 9 as a whole.

[0035] Further, refer to Figure 5 As shown, it is worth noting that a fixed ring 22 is further provided on the inner side of the rotating ring 8 and is fixed vertically to the top surface of the lifting seat 3. A torsion spring 23 is sleeved on the outer wall of the fixed ring 22. One end of the torsion spring 23 is fixedly connected to the rotating ring 8, and the other end of the torsion spring 23 is fixedly connected to the outer wall of the fixed ring 22.

[0036] By setting the torsion spring 23, as shown above, when the active gear 17 passes through the active tooth plate 18 in advance to provide rotational force for the rotating ring 8 and the wiper plate 9 as a whole, the rotating rotating ring 8 can synchronously twist the torsion spring 23 to deform. By utilizing the elastic force of the torsion spring 23, the nut seat 5, the lifting seat 3 and the electromagnet 4 continue to descend as a whole, and the active gear 17 passes through the active tooth plate 18, the rotational force exerted on the rotating ring 8 disappears, and the torsion spring 23 can act on the rotating ring 8 and the wiper plate 9 to automatically rotate as a whole, and reset the wiper plate 9, thereby avoiding the wiper plate 9 from blocking the surface of the electromagnet 4 and affecting the adsorption effect of the electromagnet 4 on the wear-resistant balls.

[0037] Further, refer to Figure 2As shown, it is worth noting that an electric telescopic rod 21 is installed on the bottom surface of the base plate 1, a movable seat 19 is fixed to the telescopic end of the electric telescopic rod 21, and a connecting rod 20 is fixed between the movable seat 19 and the active gear plate 18;

[0038] When the lifting seat 3 and the electromagnet 4 are lowered as a whole by the lifting mechanism, the electric telescopic rod 21 is turned on, and the telescopic end of the electric telescopic rod 21 can push the movable seat 19 to slide on the top surface of the base plate 1, that is, the active gear plate 18 is moved closer to the nut seat 5, so that when the nut seat 5 carries the active gear 17 downward, the active gear 17 can mesh with the active gear plate 18, providing rotational force for the rotating ring 8;

[0039] On the contrary, when the lifting seat 3 and the electromagnet 4 are lifted as a whole by the lifting mechanism, the electric telescopic rod 21 is turned off, and the active toothed plate 18 is moved away from the nut seat 5 by the same method, so that when the nut seat 5 carries the active gear 17 upward, the active gear 17 may not engage with the active toothed plate 18, providing a rotational force for the rotating ring 8 and the wiper plate 9, so as to prevent the wiper plate 9 from rotating and hitting the wear-resistant balls, causing the wear-resistant balls to fall off from the electromagnet 4 during the upward process.

[0040] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and improvements are possible without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed for the present invention is defined by the appended claims and their equivalents.

Claims

1. A lifting device for a falling ball impact testing machine, characterized in that: The invention comprises a bottom plate (1), a lifting frame (2) vertically fixed on the bottom plate (1) in a rectangular frame shape, and a lifting seat (3) slidably arranged on one side of the lifting frame (2); an electromagnet (4) is installed on the bottom surface of the lifting seat (3); a lifting mechanism is arranged on the inner side of the lifting frame (2); a wiping mechanism for cleaning the adsorption surface of the electromagnet (4) is arranged outside the electromagnet (4); and a transmission mechanism is arranged outside the wiping mechanism; The lifting mechanism comprises a lead screw (6) vertically rotatably arranged between the inner walls at both ends of the lifting frame (2) and a nut seat (5) threadedly connected to the rod of the lead screw (6), the nut seat (5) being fixedly connected to the lifting frame (3), a motor (7) being installed on the top of the lifting frame (2), the output shaft of the motor (7) being rotatably inserted into the lifting frame (2) and fixedly connected to the top end of the lead screw (6); The wiping mechanism comprises a rotating ring (8) which is arranged on the bottom surface of the lifting seat (3) in a cylindrical rotation and a wiping plate (9) which is arranged below the rotating ring (8). The bottom end surface of the rotating ring (8) is flush with the adsorption surface of the electromagnet (4). One end of the wiping plate (9) is detachably connected to the bottom end surface of the rotating ring (8) by a bolt, and the other end of the wiping plate (9) faces the center of the rotating ring (8).

2. The lifting device of the falling ball impact testing machine according to claim 1, characterized in that: The transmission mechanism includes a transmission column (11) vertically arranged on the side of the rotating ring (8), a mounting frame (13) fixed on the top surface of the nut seat (5) in an inverted U-shape, and a driven column (14) vertically rotatably arranged on the inner wall of the top end of the mounting frame (13), one end of the transmission column (11) is fastened with a transmission gear (12), and a transmission gear disk (10) meshing with the transmission gear (12) is fastened on the outer wall of the rotating ring (8), the other end of the transmission column (11) rotates through the lifting seat (3) and is connected to the driven column (14) by a driven belt (15), and the lead screw (6) is located on the inner side of the driven belt (15).

3. The lifting device of the falling ball impact testing machine according to claim 2, characterized in that: The transmission mechanism further comprises a notch provided at one end of the nut seat (5) away from the lifting seat (3), an active rod (16) rotatably arranged between the inner walls on both sides of the notch, and an active gear (17) tightly sleeved on the rod body of the active rod (16); an active tooth plate (18) meshing with the active gear (17) is slidably provided on the side of the nut seat (5) away from the lifting seat (3); and the bottom end of the driven column (14) is connected to the rod body of the active rod (16) through a bevel gear transmission.

4. The lifting device of a falling ball impact testing machine according to claim 1, characterized in that: A fixed ring (22) is also provided on the inner side of the rotating ring (8) and is fixed vertically to the top surface of the lifting seat (3). A torsion spring (23) is sleeved on the outer wall of the fixed ring (22). One end of the torsion spring (23) is fixedly connected to the rotating ring (8), and the other end of the torsion spring (23) is fixedly connected to the outer wall of the fixed ring (22).

5. The lifting device of the falling ball impact testing machine according to claim 3, characterized in that: An electric telescopic rod (21) is installed on the bottom surface of the base plate (1), a movable seat (19) is fixed to the telescopic end of the electric telescopic rod (21), and a connecting rod (20) is fixed between the movable seat (19) and the active tooth plate (18).

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