A caster durability testing machine

Abstract

The utility model relates to a caster durability tester, including a frame, a control panel, a lifting mechanism, a clamping mechanism and a pulley, wherein the lifting mechanism is mounted on the upper end of the frame, the clamping mechanism is mounted on the lifting mechanism, the pulley is mounted on the lower end of the frame, the control panel is respectively connected with the lifting mechanism, the clamping mechanism and the pulley through signals, the clamping mechanism includes a lifting plate, a clamping cylinder and a clamping plate, the lifting plate is mounted on the lifting mechanism, a stepped groove is provided in the middle of the lifting plate, a clamping plate is located in the stepped groove, a through hole is provided on the side of the upper part of the stepped groove, the clamping cylinder is mounted on the outer side of the lifting plate where the through hole is located, the cylinder rod of the clamping cylinder passes through the through hole and is connected to the clamping plate, and the clamping cylinder is connected with the control panel through a signal. The utility model can simulate the harsh environment of the caster under the actual use state, and reflect the durability of the caster in the real environment.

Description

Technical Field

[0001] The utility model relates to the technical field of casters, in particular to a caster durability testing machine. Background Art

[0002] During the production process of casters, various random inspections are required to ensure that the casters meet the production standards. Among them, the existing method for testing the durability of casters is to conduct high and low temperature tests for a certain period of time to observe whether the casters have cracks, etc. However, this test method is not comprehensive and cannot simulate the harsh environment under the actual use of casters. It is difficult to reflect the durability of casters in the real environment. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a caster durability testing machine, which can simulate the harsh environment of the caster in actual use and reflect the durability of the caster in the real environment.

[0004] The technical solution of the utility model is: a caster durability testing machine, including a frame, a control panel, a lifting mechanism, a clamping mechanism and a pulley, the lifting mechanism is installed on the upper end of the frame, the clamping mechanism is installed on the lifting mechanism, the pulley is installed on the lower end of the frame, the control panel is respectively connected with the lifting mechanism, the clamping mechanism and the pulley through signals, the clamping mechanism includes a lifting plate, a clamping cylinder and a clamping plate, the lifting plate is installed on the lifting mechanism, a stepped groove which passes through the lifting plate from top to bottom is provided in the middle part of the lifting plate, the clamping plate is located in the stepped groove, a through hole is provided on the side of the upper part of the stepped groove, the clamping cylinder is installed on the outer side of the lifting plate where the through hole is located, the cylinder rod of the clamping cylinder passes through the through hole and is connected with the clamping plate, and the clamping cylinder is connected with the control panel through a signal.

[0005] Furthermore, there are multiple groups of clamping cylinders and clamping plates, which are correspondingly arranged in four directions of the stepped groove.

[0006] Furthermore, the clamping plate is provided with an inclined surface, and the inclined surface faces downward from the middle of the lifting plate.

[0007] Furthermore, the lifting mechanism includes a screw rod and a motor, the motor is installed at the upper end of the frame, the output end of the motor is connected to the screw rod, a threaded hole is provided on the lifting plate, the screw rod is transmission-connected to the threaded hole, and the motor is connected to the control board through a signal.

[0008] Furthermore, the screw rod is rotatably connected to the frame.

[0009] Furthermore, a limiting nut is provided on the screw rod.

[0010] Furthermore, the screw rod is provided with a gear, and the multiple gears of the multiple screw rods are connected by a chain.

[0011] Furthermore, a testing layer is provided on the surface of the pulley.

[0012] Furthermore, an encoder is provided on the pulley, and the encoder is connected to the control board via a signal.

[0013] Furthermore, the control panel is provided with a screen, a knob, a button and a print window.

[0014] Compared with the prior art, the advantages of the utility model are: the stepped groove that runs through from top to bottom can be used to place casters, the connecting plate at the upper end of the caster is mounted on the stepped groove, and the roller of the caster passes through the stepped groove and enters the lower end of the lifting plate, and the clamping plate is pushed against the connecting plate of the caster by the cylinder rod of the clamping cylinder; during the test, the pulley can simulate the environment in which the caster is used on a real road surface, and the caster durability obtained by testing this method is real and reliable and conforms to the actual situation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a structural schematic diagram of the lifting plate of the utility model;

[0018] Figure 3 This is a working principle diagram of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the caster of the utility model.

[0020] Among them: 1. frame; 2. motor; 3. screw rod; 4. gear; 5. chain; 6. limit nut; 7. lifting plate; 701. through hole; 702. step groove; 703. threaded hole; 8. clamping cylinder; 9. clamping plate; 901. inclined plane; 10. pulley; 11. test layer; 12. encoder; 13. control board; 1301. print window; 1302. knob; 1303. button; 1304. screen; 14. caster; 1401. connecting plate; 1402. roller. DETAILED DESCRIPTION

[0021] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0022] like Figure 1-4 As shown, a caster durability tester includes a frame 1, a control panel 13, a lifting mechanism, a clamping mechanism and a pulley 10, wherein the lifting mechanism is mounted on the upper end of the frame 1, the clamping mechanism is mounted on the lifting mechanism, the pulley 10 is mounted on the lower end of the frame 1, the control panel 13 is respectively connected with the lifting mechanism, the clamping mechanism and the pulley 10 through signals, the clamping mechanism includes a lifting plate 7, a clamping cylinder 8 and a clamping plate 9, the lifting plate 7 is mounted on the lifting mechanism, and a stepped groove 702 is provided in the middle of the lifting plate 7 to pass through from top to bottom for placing a caster 14, The connecting plate 1401 at the upper end of the caster 14 is mounted on the step groove 702, and the roller 1402 passes through the step groove 702 to enter the lower end of the lifting plate 7, the clamping plate 9 is located in the step groove 702, and a through hole 701 is provided on the side of the upper part of the step groove 702. The clamping cylinder 8 is installed on the outer side of the lifting plate 7 where the through hole 701 is located, and the cylinder rod of the clamping cylinder 8 passes through the through hole 701 and is connected to the clamping plate 9. The clamping plate 9 is pushed against the connecting plate 1401 of the caster 14 by the cylinder rod of the clamping cylinder 8, and the clamping cylinder 8 is connected to the control board 13 through a signal.

[0023] In the above embodiment, there are multiple groups of clamping cylinders 8 and clamping plates 9, which are correspondingly arranged in four directions of the step groove 702, and can clamp the caster 14 from four directions; the clamping plate 9 is provided with an inclined surface 901, and the inclined surface 901 faces the lower middle part of the lifting plate 7. When the clamping plate 9 is against the connecting plate 1401 of the caster 14, the connecting plate 1401 is subjected to a lateral clamping force and a downward thrust, thereby ensuring the stability of the caster 14 during the test.

[0024] In the above embodiment, the lifting mechanism includes a screw rod 3 and a motor 2, the motor 2 is installed at the upper end of the frame 1, the output end of the motor 2 is connected to the screw rod 3, the lifting plate 7 is provided with a threaded hole 703, the screw rod 3 is transmission connected to the threaded hole 703, the motor 2 rotates to drive the screw rod 3, thereby driving the lifting plate 7 to move up and down, and the motor 2 is connected to the control board 13 through a signal; the screw rod 3 is rotationally connected to the frame 1 to assist in force and prevent damage to the shaft of the motor 2; a limit nut 6 is provided on the screw rod 3 to limit the stroke of the lifting plate 7 to prevent the lifting plate 7 from being too high and difficult to take and place the caster 14, and from being too low and causing impact on the pulley 10; a gear 4 is provided on the screw rod 3, and the four gears 4 of the four screw rods 3 are connected by a chain 5, so that the four screw rods 3 rotate synchronously, thereby smoothly driving the lifting plate 7 to move up and down.

[0025] In the above embodiment, a test layer 11 is provided on the surface of the pulley 10. The test layer 11 is usually a frosted layer to simulate the real environment when the caster 14 is used on a paved road. It can also be a simulated gravel layer to simulate the harsh environment when the caster 14 is used on an unpaved road. An encoder 12 is provided on the pulley 10. The encoder 12 is connected to the control board 13 through a signal. The number of rotations of the pulley 10 is collected through the encoder 12, so as to calculate the test mileage of the caster 14. The control board 13 is provided with a screen 1304, a knob 1302, a button 1303 and a print window 1301. The screen 1304 can display the test status, mileage, time and other information of the caster 14. The knob 1302 can adjust the rotation speed of the pulley 10. The button 1303 can control the start and stop of the device. The print window 1301 can obtain various printed data.

[0026] Description of the working method of this utility model:

[0027] Adjust the position of the limit nut 6 so that there is a certain space between the lifting plate 7 and the top of the frame 1, which is convenient for taking and placing the caster 14, and also keeps the lifting plate 7 at a position higher than the upper end of the pulley 10 to prevent the lifting plate 7 from hitting the pulley 10. Put the caster 14 to be tested into the step groove 702, and the roller 1402 of the caster 14 passes through the step groove 702 and hangs in the air, while the connecting plate 1401 of the caster 14 is set in the step groove 702. At this time, the cylinder rod of the clamping cylinder 8 pushes the clamping plate 9 to clamp the connecting plate 1401 from four horizontal directions, thereby fixing the caster 14; the lifting plate 7 is lowered by rotating the motor 2, so that the roller 1402 of the caster 14 slowly approaches the surface of the pulley 10, and then the pulley 10 is started through the control panel 13, and the lifting plate 7 is continued to be controlled by the motor 2 to be lowered, so that the roller 1402 of the caster 14 is The wheel 1402 lightly presses against the surface of the pulley 10 to simulate the load-bearing condition of the caster 14 under certain load conditions. At this time, the roller 1402 of the caster 14 rotates with the pulley 10, and the encoder 12 starts to collect and record the test mileage of the caster 14; when the caster 14 completes the test of the specified mileage, the control panel 13 controls the pulley 10 to stop rotating and the lifting plate 7 to rise, and then the clamping cylinder 8 is released, the caster 14 is taken out and observed to determine whether the caster 14 has undergone the entire test cycle; various test information can be printed through the print window 1301 of the control panel 13 to complete the record.

[0028] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A caster durability testing machine, characterized in that: It includes a frame, a control panel, a lifting mechanism, a clamping mechanism and a pulley, wherein the lifting mechanism is installed at the upper end of the frame, the clamping mechanism is installed on the lifting mechanism, and the pulley is installed at the lower end of the frame. The control panel is respectively connected with the lifting mechanism, the clamping mechanism and the pulley through signals. The clamping mechanism includes a lifting plate, a clamping cylinder and a clamping plate. The lifting plate is installed on the lifting mechanism. A stepped groove which passes through from top to bottom is provided in the middle of the lifting plate. The clamping plate is located in the stepped groove. A through hole is provided on the side of the upper part of the stepped groove. The clamping cylinder is installed on the outer side of the lifting plate where the through hole is located. The cylinder rod of the clamping cylinder passes through the through hole and is connected with the clamping plate. The clamping cylinder is connected with the control panel through a signal.

2. The caster durability testing machine according to claim 1, characterized in that: There are multiple groups of clamping cylinders and clamping plates, which are correspondingly arranged in four directions of the stepped groove.

3. The caster durability testing machine according to claim 1, characterized in that: The clamping plate is provided with an inclined surface, and the inclined surface faces downward from the middle of the lifting plate.

4. The caster durability testing machine according to claim 1, characterized in that: The lifting mechanism includes a screw rod and a motor, the motor is installed at the upper end of the frame, the output end of the motor is connected to the screw rod, a threaded hole is provided on the lifting plate, the screw rod is transmission-connected to the threaded hole, and the motor is connected to the control board through a signal.

5. The caster durability testing machine according to claim 4, characterized in that: The screw rod is rotatably connected to the frame.

6. The caster durability testing machine according to claim 4, characterized in that: A limiting nut is arranged on the screw rod.

7. The caster durability testing machine according to claim 4, characterized in that: The screw rod is provided with a gear, and the gears of the multiple screw rods are connected by a chain.

8. The caster durability testing machine according to claim 1, characterized in that: A testing layer is provided on the surface of the pulley.

9. The caster durability testing machine according to claim 1, characterized in that: The pulley is provided with an encoder, and the encoder is connected to the control board through a signal.

10. The caster durability testing machine according to claim 1, characterized in that: The control panel is provided with a screen, a knob, a button and a print window.

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