A pulley impact load testing machine

Abstract

The present invention relates to the field of mechanical testing devices, and specifically to a pulley impact load testing machine. It includes a first motor, a coupling, a rotating shaft rod, an eccentric wheel, a pressure wheel assembly, a second motor, a driving wheel assembly, a measuring assembly and a tension spring guide column. The first motor is connected to the rotating shaft rod through the coupling. Multiple groups of eccentric wheels are fixed on the rotating shaft rod. The pressure wheel assemblies are respectively arranged below the multiple groups of eccentric wheels and contact the eccentric wheels. The pressure wheel assembly is elastically connected to the tension spring guide column through a tension spring, and the tension spring is used to reset the pressure wheel assembly. The present invention can realize synchronous testing of multiple groups of pulleys on one device, with high testing efficiency. Moreover, the measuring assemblies of each pulley are independent of each other, and later maintenance is convenient.

Description

Technical Field

[0001] The invention relates to the field of testing devices, in particular to a pulley impact load testing machine. Background Art

[0002] Pulleys are often used in lifting machinery. As an important part of lifting machinery, there are strict requirements for the hardness and load-bearing capacity of the pulley. Once the pulley is damaged, it will cause safety hazards. For example, the pulley in the elevator has strict requirements for the service life of the pulley. Therefore, before the pulley is put on the market, a series of index tests will be carried out on the pulley, among which the impact load test of the pulley is one of the important indicators that need to be tested for pulleys in some special fields. At present, one device for the impact load test of the pulley can only perform the impact load test on one pulley, and it is impossible to test multiple pulleys together, and the test efficiency is low. Summary of the invention

[0003] The technical problem solved by the invention is to provide an impact load testing machine capable of testing multiple groups of pulleys together.

[0004] The technical solution adopted by the present invention to solve its technical problem is:

[0005] A pulley impact load testing machine comprises a first motor, a coupling, a rotating shaft rod, an eccentric wheel, a pressure wheel assembly, a second motor, a driving wheel assembly, a measuring assembly and a tension spring guide column, wherein the first motor is connected to the rotating shaft rod through the coupling, a plurality of eccentric wheels are fixed on the rotating shaft rod, the pressure wheel assemblies are respectively arranged below the plurality of eccentric wheels and contact the eccentric wheels, the pressure wheel assembly is elastically connected to the tension spring guide column through a tension spring, and the tension spring is used to reset the pressure wheel assembly; the plurality of pressure wheel assemblies are respectively arranged below the plurality of pressure wheel assemblies, the measuring assembly is used to fix the pulley to be tested and record the measurement data of the pulley to be tested, the second motor drives the driving wheel assembly to rotate, thereby driving the pulley to be tested on the plurality of measuring assemblies to rotate together; the first motor drives the rotating shaft rod to rotate to generate a distance difference of up and down movement through the eccentric wheel, thereby driving the pressure wheel assembly to press the pulley to be tested back and forth up and down, and the measuring assembly transmits the measurement data to a computer for data processing.

[0006] Furthermore, the pressure wheel assembly includes a pressure block, a roller and a roller shaft. The pressure block is rotatably connected to the roller via a bearing assembly. The roller is in contact with the eccentric wheel. A roller shaft is provided on the side of the pressure block. The roller shaft is elastically connected to the tension spring guide column via a tension spring.

[0007] Furthermore, a pressure wheel is provided on the lower surface of the pressure block, and the pressure wheel is a cam, and the cam corresponds to the pulley groove of the pulley to be tested.

[0008] Further, the driving wheel assembly includes a first roller rod, a second roller rod, a third roller rod and a small driving wheel, the second roller rod and the third roller rod are horizontally symmetrically arranged relative to the first roller rod, and are connected to the first roller rod through a plurality of connecting plates, the connecting plates and the first roller rod, the second roller rod and the third roller rod are respectively provided with corresponding bearing assemblies at the connection points, the first roller rod, the second roller rod and the third roller rod are respectively axially connected to the connecting plates, the second roller rod and the third roller rod are respectively symmetrically fixed with a plurality of the small driving wheels, the second motor drives the first roller rod to rotate, the first roller rod drives the second roller rod and the third roller rod to rotate together, and drives the pulley to be tested to rotate through the small driving wheel, the second roller rod and the third roller rod are respectively elastically connected to the tension spring guide column through the tension spring.

[0009] Preferably, the second motor drives the first roller rod to rotate via a pulley assembly, and the first roller rod drives the second roller rod and the third roller rod to rotate together via the pulley assembly.

[0010] Furthermore, the measuring assembly includes a clamping column, a limit block, a compression spring assembly and a weighing sensor, the clamping column is used to clamp and fix the pulley to be tested, the clamping column is connected to the compression spring assembly, the other end of the compression spring assembly is connected to the weighing sensor, and the limit block wraps the clamping column to limit the clamping column and prevent the clamping column from deflecting.

[0011] Furthermore, the pulley impact load testing machine adopts two groups of the first motors to drive the test, forming two groups of left and right test modules; the two groups of first motors respectively drive the rotating shaft rods to rotate through the couplings, and multiple groups of eccentric wheels are symmetrically arranged on the two groups of rotating shaft rods, and the two groups of rotating shaft rods are rotatably connected through a pulley assembly.

[0012] Furthermore, it also includes a first substrate, a second substrate, a first baffle, a second baffle and a third baffle, the first baffle, the second baffle and the third baffle are horizontally and vertically fixed on the upper surface of the first substrate, the first baffle and the second baffle are fixedly connected by a plurality of connecting rods, the upper ends of the second baffle and the third baffle are fixedly connected by a plurality of connecting rods, and the middle ends are horizontally fixedly connected with the second substrate, the first motor is vertically fixed to the right side of the first baffle, the shaft rod passes through the second baffle and the third baffle horizontally, and the second baffle and the third baffle are provided with bearing assemblies corresponding to the shaft rod, the rotating shaft of the first motor passes through the first baffle, and the shaft of the first motor passes through the connecting rod. The shaft is connected to the rotating shaft rod; the weighing sensor is fixed on the upper surface of the first substrate between the second baffle plate and the third baffle plate, the limit block is fixed on the upper surface of the second substrate, and the clamping column passes through the second substrate to connect the compression spring assembly; the driving wheel assembly is above the second substrate, the second motor is fixed on the left side of the third substrate, the horizontal axis of the first roller rod is connected to the bearing assemblies on the second baffle plate and the third baffle plate, the rotating shaft of the second motor passes through the third baffle plate and is connected to the first roller rod through a pulley assembly; the second baffle plate and the third baffle plate above the driving wheel assembly are horizontally fixed with a pressure wheel guide column, and the pressure wheel assembly axis is connected to the pressure wheel guide column.

[0013] Furthermore, two eccentric wheels are symmetrically arranged on the two groups of rotating shaft rods to form two independent testing devices, and the left and right groups of testing modules form four independent testing devices in total. Each independent testing device includes an independent pressure wheel assembly and a measuring assembly. The pressure wheel assembly is elastically connected to the tension spring guide column through the tension spring, and the driving wheel assembly is provided with a corresponding small driving wheel to drive the pulley to be tested to rotate.

[0014] Furthermore, a buffer pad is provided on the lower surface of the first substrate, and the first substrate is fixedly connected to the workbench.

[0015] The beneficial effects of the present invention are:

[0016] Driven by dual motors, each motor is connected to a rotating rod through a coupling, and multiple sets of eccentric wheels are fixed on each rotating rod, so that multiple sets of pulleys can be tested together on one device, with high testing efficiency.

[0017] Each measuring component is an independent component. If one measuring component is damaged, it will not affect the data measurement of other measuring components, making subsequent maintenance convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 for Figure 1 Front view of

[0020] Figure 3 for Figure 1 The partial structural diagram marked as 5;

[0021] Figure 4 for Figure 3 Front view of

[0022] Figure 5 for Figure 1 The partial structural diagram marked as 7;

[0023] Figure 6 for Figure 1 The structure diagram of the part marked as 8

[0024] The markings in the figure are:

[0025] 1. first motor, 2. coupling, 3. rotating shaft rod, 4. eccentric wheel, 5. pressure wheel assembly, 6. second motor, 7. driving wheel assembly, 8. measuring assembly, 9. tension spring guide column, 10. tension spring, 11. pulley assembly, 12. pulley to be tested, 13. pressure wheel guide column, 21. first base plate, 22. second base plate, 23. first baffle plate, 24. second baffle plate, 25. third baffle plate, 26. connecting rod, 51. pressure block, 52. roller, 53. roller shaft rod, 54. pressure wheel, 71. first roller rod, 72. second roller rod, 73. third roller rod, 74. small driving wheel, 75. connecting plate, 81. clamping column, 82. limit block, 83. pressure spring assembly, 84. weighing sensor. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element at the same time.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] A pulley impact load testing machine, such as Figure 1 and Figure 2 As shown, it includes a first motor 1, a coupling 2, a rotating shaft rod 3, an eccentric wheel 4, a pressure wheel assembly 5, a second motor 6, a driving wheel assembly 7, a measuring assembly 8 and a tension spring guide column 9. The first motor 1 is connected to the rotating shaft rod 3 through the coupling 2. Multiple groups of eccentric wheels 4 are fixed on the rotating shaft rod 3. Pressure wheel assemblies 5 are respectively arranged below the multiple groups of eccentric wheels 4 and contact the eccentric wheels 4. The pressure wheel assembly 5 is elastically connected to the tension spring guide column 9 through a tension spring 10, and the tension spring 10 is used to reset the pressure wheel assembly 5; the multiple groups of pressure wheel assemblies 5 are respectively provided with measuring assemblies 8, and the measuring assembly 8 is used to fix the pulley 12 to be tested and record the measurement data of the pulley 12 to be tested. The second motor 6 drives the driving wheel assembly 7 to rotate, thereby driving the pulley 12 to be tested on the multiple groups of measuring assemblies 8 to rotate; the first motor 1 drives the rotating shaft rod 3 to rotate to generate a distance difference of up and down movement through the eccentric wheel 4, thereby driving the pressure wheel assembly 5 to press the pulley 12 to be tested back and forth, and the measuring assembly 8 transmits the measurement data to the computer for data processing.

[0030] like Figure 3 As shown, the pressure wheel assembly 5 includes a pressure block 51, a roller 52 and a roller shaft 53. The upper surface of the pressure block 51 is grooved, and the roller 52 is arranged in the groove on the upper surface of the pressure block 51 and is rotatably connected to the pressure block 51 through the bearing assembly. The roller 52 is higher than the pressure block 51 and contacts the lower surface of the eccentric wheel. One side of the roller shaft 53 protrudes out of the pressure block 51 and is used to connect the tension spring 10, and is elastically connected to the tension spring guide column 9 through the tension spring 10. Figure 4 As shown, the lower surface of the pressure block 51 is provided with a cam corresponding to the pulley groove of the pulley 12 to be tested. When the eccentric wheel 4 moves downward, the pressure assembly 5 is pressed down. The pressure assembly 5 tests the pulley 12 to be tested, and then the measuring assembly starts to measure data. When the eccentric wheel 4 moves up and down to reset, the tension spring 10 pulls the pressure assembly 5 to reset upward, and this is repeated once to achieve the impact load test of the pulley.

[0031] like Figure 5As shown, the driving wheel assembly 7 includes a first roller rod 71, a second roller rod 72, a third roller rod 73 and a small driving wheel 74. The second roller rod 72 and the third roller rod 73 are horizontally symmetrically arranged relative to the first roller rod 71, and are connected to the first roller rod 71 through a plurality of connecting plates 75. The connecting plates 75 are respectively provided with corresponding bearing assemblies at the connection points with the first roller rod 71, the second roller rod 72 and the third roller rod 73. The first roller rod 71, the second roller rod 72 and the third roller rod 73 are respectively axially connected to the connecting plates 75. A plurality of small driving wheels 74 are respectively symmetrically fixed on the second roller rod 72 and the third roller rod 73. The second motor 6 drives the first roller rod 71 to rotate, and the first roller rod 71 drives the second roller rod 72 and the third roller rod 73 to rotate together, and drives the pulley 12 to be tested to rotate through the small driving wheel 74. The second roller rod 72 and the third roller rod 73 are respectively elastically connected to the tension spring guide column 9 through the tension spring 10.

[0032] The driving wheel assembly 7 drives the pulley 12 to be tested to rotate evenly to simulate the actual sliding process of the pulley. The second motor 6 drives the first roller rod 71 to rotate through the pulley assembly. The first roller rod 71 drives the second roller rod 72 and the third roller rod 73 to rotate together through the pulley assembly.

[0033] like Figure 6 As shown, the measuring assembly 8 includes a clamping column 81, a limit block 82, a compression spring assembly 83 and a weighing sensor 82. The clamping column 81 is used to clamp and fix the pulley 12 to be tested. The clamping column 81 is connected to the compression spring assembly 83. The other end of the compression spring assembly 83 is connected to the weighing sensor 84. The limit block 82 wraps the clamping column 81 to limit the clamping column 81 and prevent the clamping column 81 from deviating and affecting the measurement data.

[0034] like Figure 2As shown, it also includes a first substrate 21, a second substrate 22, a first baffle 23, a second baffle 24 and a third baffle 25. The first baffle 23, the second baffle 24 and the third baffle 25 are fixed horizontally and vertically on the upper surface of the first substrate 21. The first baffle 23 and the second baffle 24 are fixedly connected by a plurality of connecting rods 26. The upper ends of the second baffle 24 and the third baffle 25 are fixedly connected by a plurality of connecting rods 26, and the middle ends are horizontally fixedly connected with the second substrate 22. The first motor 1 is vertically fixed to the right side of the first baffle 23. The shaft rod 3 horizontally passes through the second baffle 24 and the third baffle 25. The second baffle 24 and the third baffle 25 are provided with bearing assemblies corresponding to the shaft rod 3. The shaft rod 3 is axially connected to the second baffle 24 and the third baffle 25. The rotation of the first motor 1 The moving shaft passes through the first baffle 23 and is connected to the rotating shaft rod 3 through the coupling 2; the weighing sensor 84 is fixed on the upper surface of the first substrate 21 between the second baffle 24 and the third baffle 25, the limit block 82 is fixed on the upper surface of the second substrate 22, and the clamping column 81 passes through the second substrate 22 to connect the compression spring assembly 83; the driving wheel assembly 7 is above the second substrate 22, the second motor 6 is fixed on the left side of the third baffle 25, the first roller rod 71 is horizontally axially connected to the bearing assemblies on the second baffle 24 and the third baffle 25, the rotating shaft of the second motor 6 passes through the third baffle 25 and is connected to the first roller rod 71 through the pulley assembly; the second baffle 24 and the third baffle 25 above the driving wheel assembly 7 are horizontally fixed with a pressure wheel guide column 13, and the pressure wheel assembly 5 is axially connected to the pressure wheel guide column 13.

[0035] like Figure 1 As shown, the testing machine uses two groups of first motors 1 to drive synchronous testing, forming two groups of left and right testing modules. The two groups of first motors 1 are respectively connected to the rotating shaft rods 3 through couplings 2. Multiple groups of eccentric wheels 4 are symmetrically arranged on the two groups of rotating shaft rods 3. The two groups of rotating shaft rods 3 are rotationally connected through a pulley assembly.

[0036] like Figure 1 and Figure 5 As shown, two eccentric wheels 4 are symmetrically arranged on the two groups of rotating shaft rods 3, forming two independent test devices, and the left and right groups of test modules form four independent test devices in total, each independent test device includes an independent pressure wheel assembly 5 and a measuring assembly 8, the pressure wheel assembly 5 is elastically intercepted by the tension spring guide column 9 through the tension spring 10, and the driving wheel assembly 7 is fixed with four small driving wheels 74 corresponding to the driving wheel 12 to rotate. At the same time, according to the customization of the user, the eccentric wheel 4 on the rotating shaft rod 3 and the corresponding pressure wheel assembly 5 and the measuring assembly 8 can be designed to be 6, 8 or increase horizontally in equal proportion.

[0037] A buffer pad (omitted) is disposed on the lower surface of the first substrate 21 of the testing machine, and the first substrate 21 is fixedly connected to the workbench.

[0038] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulley impact load testing machine, characterized in that: The invention comprises a first motor (1), a coupling (2), a rotating shaft rod (3), an eccentric wheel (4), a pressure wheel assembly (5), a second motor (6), a driving wheel assembly (7), a measuring assembly (8) and a tension spring guide column (9), wherein the first motor (1) is connected to the rotating shaft rod (3) via the coupling (2), a plurality of groups of eccentric wheels (4) are fixed to the rotating shaft rod (3), the pressure wheel assemblies (5) are respectively arranged below the plurality of groups of eccentric wheels (4) and are in contact with the eccentric wheels (4), the pressure wheel assemblies (5) are elastically connected to the tension spring guide column (9) via a tension spring (10), the tension spring (10) is used to reset the pressure wheel assembly (5); the plurality of groups of pressure wheel assemblies (5) are respectively arranged below the measurement assemblies (8), the measurement assemblies (8) are used to fix the pulley to be tested (12) and record the measurement data of the pulley to be tested (12), the pressure wheel assemblies (5) are respectively arranged below the plurality of groups of pressure wheel assemblies (5 ... The second motor (6) drives the driving wheel assembly (7) to rotate, thereby driving the pulleys (12) to be tested on the multiple groups of measuring assemblies (8) to rotate; the first motor (1) drives the rotating shaft rod (3) to rotate through the eccentric wheel (4) to generate a distance difference in up and down movement, thereby driving the pressing wheel assembly (5) to press the pulley (12) to be tested up and down, and the measuring assembly (8) transmits the measurement data to the computer for data processing; the pressing wheel assembly (5) comprises a pressing block (51), a roller (52) and a roller shaft rod (53); the pressing block (51) is rotatably connected to the roller (52) via a bearing assembly, the roller (52) is in contact with the eccentric wheel (4), and a roller shaft rod (53) is provided on the side of the pressing block (51), and the roller shaft rod (53) is elastically connected to the tension spring guide column (9) via a tension spring (10);The driving wheel assembly (7) comprises a first roller rod (71), a second roller rod (72), a third roller rod (73) and a small driving wheel (74); the second roller rod (72) and the third roller rod (73) are arranged horizontally symmetrically relative to the first roller rod (71) and are connected to the first roller rod (71) via a plurality of connecting plates (75); corresponding bearing assemblies are respectively arranged at the connection points between the connecting plates (75) and the first roller rod (71), the second roller rod (72) and the third roller rod (73); the first roller rod (71), the second roller rod (72) and the third roller rod (73) are respectively axially connected to the connecting plates (75); and the second roller rod (72) and the third roller rod (73) are respectively symmetrically fixedly provided with a plurality of the small driving wheels ( 74), the second motor (6) drives the first roller rod (71) to rotate, the first roller rod (71) drives the second roller rod (72) and the third roller rod (73) to rotate together, and drives the pulley to be tested (12) to rotate through the small driving wheel (74), the second roller rod (72) and the third roller rod (73) are elastically connected to the tension spring guide column (9) through the tension spring (10) respectively; the pulley impact load testing machine uses two groups of the first motor (1) to drive synchronous testing, forming two groups of left and right test modules; the two groups of first motors (1) drive the rotating shaft rod (3) to rotate respectively through the coupling (2), the two groups of rotating shaft rods (3) are symmetrically provided with multiple groups of eccentric wheels (4), and the two groups of rotating shaft rods (3) are rotationally connected through a pulley assembly. ; 2. A pulley impact load testing machine as claimed in claim 1, characterized in that: A pressing wheel (54) is provided on the lower surface of the pressing block (51); the pressing wheel (54) is a cam; the cam corresponds to the pulley groove of the pulley (12) to be tested.

3. A pulley impact load testing machine as claimed in claim 1, characterized in that: The second motor (6) drives the first roller rod (71) to rotate via a pulley assembly, and the first roller rod (71) drives the second roller rod (72) and the third roller rod (73) to rotate together via the pulley assembly.

4. A pulley impact load testing machine as claimed in claim 1, characterized in that: The measuring assembly comprises a clamping column (81), a limit block (82), a compression spring assembly (83) and a weighing sensor (84); the clamping column (81) is used to clamp and fix the pulley (12) to be tested; the clamping column (81) is connected to the compression spring assembly (83); the other end of the compression spring assembly (83) is connected to the weighing sensor (84); the limit block (82) wraps around the clamping column (81) to limit the clamping column (81) and prevent the clamping column (81) from deflecting.

5. A pulley impact load testing machine as claimed in claim 4, characterized in that: The invention also comprises a first substrate (21), a second substrate (22), a first baffle (23), a second baffle (24) and a third baffle (25), wherein the first baffle (23), the second baffle (24) and the third baffle (25) are fixedly connected to the upper surface of the first substrate (21) in a horizontal and vertical manner, the first baffle (23) and the second baffle (24) are fixedly connected by a plurality of connecting rods (26), the upper ends of the second baffle (24) and the third baffle (25) are fixedly connected by a plurality of connecting rods (26), and the middle ends are horizontally fixedly connected to the second substrate (22), the first motor (1) is vertically fixed to the right side of the first baffle (23), the rotating shaft rod (3) passes through the second baffle (24) and the third baffle (25) horizontally, and the second baffle (24) and the third baffle (25) are provided with bearing assemblies opposite to the rotating shaft rod (3), the rotating shaft of the first motor (1) passes through the first baffle (23) and is connected to the third baffle (25) by the coupling ( 2) connected to the rotating shaft rod (3); the weighing sensor (84) is fixed on the upper surface of the first substrate (21) between the second baffle plate (24) and the third baffle plate (25); the limit block (82) is fixed on the upper surface of the second substrate (22); the clamping column (81) passes through the second substrate (22) and is connected to the compression spring assembly (83); the driving wheel assembly (7) is above the second substrate (22); the second motor (6) is fixed on the left side of the third baffle plate (25); the first roller rod (71) is horizontally axially connected to the bearing assemblies on the second baffle plate (24) and the third baffle plate (25); the rotating shaft of the second motor (6) passes through the third baffle plate (25) and is connected to the first roller rod (71) through a pulley assembly; a pressure wheel guide column (13) is horizontally fixed on the second baffle plate (24) and the third baffle plate (25) above the driving wheel assembly (7); the pressure wheel assembly (5) is axially connected to the pressure wheel guide column (13).

6. A pulley impact load testing machine as claimed in claim 5, characterized in that: The two groups of rotating shaft rods (3) are symmetrically provided with two eccentric wheels (4) to form two independent test devices. The left and right groups of test modules form four independent test devices in total. Each independent test device comprises an independent pressure wheel assembly (5) and a measuring assembly (8). The pressure wheel assembly (5) is elastically connected to the tension spring guide column (9) via the tension spring (10). The driving wheel assembly (7) is provided with a corresponding small driving wheel (74) to drive the pulley (12) to be tested to rotate.

7. A pulley impact load testing machine as claimed in claim 6, characterized in that: A buffer pad is provided on the lower surface of the first substrate (21), and the first substrate (21) is fixedly connected to the workbench.

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