A dynamic load testing device for cable pulley assembly

Abstract

This utility model belongs to the technical field of cable sheave testing equipment, and particularly relates to a dynamic load testing device for cable sheave assemblies. It includes a test bench and a rotating wheel rotatably mounted on the test bench. The rotating wheel is detachably mounted on the test bench. A first driver is provided on the test bench to drive the rotating wheel's rotation, and the output end of the first driver is detachably connected to the rotating wheel. Mounting seats for mounting cable sheaves are provided on the test bench around the rotating wheel, and these mounting seats are slidably mounted on the test bench in the same radial direction as the rotating wheel. A second driver is provided on the test bench to drive the mounting seats to slide. This utility model's dynamic load testing device for cable sheave assemblies, by setting a detachable rotating wheel on the test bench and using a first driving device to drive the rotating wheel's rotation, allows testing personnel to install and arrange cable sheaves according to actual testing needs, thereby achieving rapid testing of batch cable sheaves.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable wheel testing equipment, and in particular relates to a dynamic load testing device for cable wheel assemblies. Background Technology

[0002] A pulley, also known as a guide pulley, is a common mechanical component used to guide and support flexible materials such as ropes, wire ropes, or belts. A pulley typically consists of a wheel and an axle; the wheel can rotate freely to reduce friction on the rope during movement. Pulleys are widely used in various mechanical equipment, such as cranes, elevators, cable cars, hoists, and conveyor systems. Dynamic load testing of pulleys before they leave the factory is crucial, primarily to ensure their safety and verify their performance to identify potential defects. For example, dynamic load testing verifies the structural strength of the pulley under actual working conditions, ensuring it can withstand the expected load without damage or deformation. However, existing dynamic load testing devices suffer from low testing efficiency, cannot easily perform dynamic load testing on multiple pulleys, and are inconvenient to assemble and adjust, hindering the improvement of testing efficiency and accuracy. Utility Model Content

[0003] In view of this, the present invention aims to propose a dynamic load testing device for cable sheaves to solve the problem of low testing efficiency in existing dynamic load testing devices for cable sheaves.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows: A dynamic load testing device for cable sheaves includes a test bench and a rotating wheel rotatably mounted on the test bench. The rotating wheel is detachably mounted on the test bench. The test bench is provided with a first driver for driving the rotating wheel to rotate, and the output end of the first driver is detachably connected to the rotating wheel. The test bench is provided with mounting seats for mounting cable sheaves at positions corresponding to the circumference of the rotating wheel. The mounting seats are slidably mounted on the test bench, and the sliding direction of the mounting seats is the same as the radial direction of the rotating wheel. The test bench is provided with a second driver for driving the mounting seats to slide.

[0005] Furthermore, the rotating wheel includes an outer ring and an inner ring, which are coaxially arranged. The axial thickness of the outer ring is greater than that of the inner ring, and the inner ring is rotatably mounted on the test bench via a rotating shaft.

[0006] Furthermore, the inner ring is provided with a bushing that mates with the rotating shaft, and bearing seats that mate with the rotating shaft are provided at the positions corresponding to the left and right ends of the rotating shaft on the test bench. The bearing seats are detachably mounted on the test bench.

[0007] Furthermore, the inner ring is connected to the outer ring by reinforcing ribs. Multiple reinforcing ribs are arranged radially around the rotation axis, and each reinforcing rib is fixed at one end to the bushing and at the other end to the outer ring.

[0008] Furthermore, the inner ring is provided with weight-reducing holes at positions corresponding to the positions between two adjacent reinforcing ribs.

[0009] Furthermore, the outer ring is provided with a detachable rope.

[0010] Furthermore, the mounting base is provided with sliders at both ends, the sliders are provided with grooves, and the test bench is provided with guide rails that cooperate with the grooves.

[0011] Furthermore, at least two sliders are provided at intervals along the sliding direction of the mounting base.

[0012] Furthermore, the test bench is provided with receiving grooves for accommodating the mounting base and the second driver at positions corresponding to the circumference of the rotating wheel.

[0013] Furthermore, the test bench is provided with an assembly base for mounting the second driver. The assembly base is an I-shaped structural component. The flange plates at both ends of the assembly base can be detachably mounted on the test bench. The fixed end of the second driver is detachably mounted on the web plate of the assembly base, and the telescopic end is detachably connected to the mounting base.

[0014] Compared with existing technologies, the dynamic load testing device for cable pulleys described in this utility model has the following advantages: This utility model discloses a dynamic load testing device for cable sheaves. By installing a detachable rotating wheel on a test bench and driving the wheel's rotation using a first drive device, testers can install and arrange the cable sheaves according to actual testing needs, enabling rapid testing of batch cable sheaves. Testers can also easily replace or adjust the rotating wheel to adapt to the dynamic load testing requirements of different types or sizes of cable sheave components. Specifically, by setting a second drive to move the mounting base and cable sheaves, the maximum wheel pressure applied by the rotating wheel in conjunction with the cable sheaves, or the additional pressure applied by the second drive, can simultaneously perform multi-axis, multi-form load loading tests on multiple cable sheaves. This more effectively exposes the fatigue, wear, deformation, or failure modes that cable sheaves may exhibit under complex stress states, thus providing more reliable product performance evaluation and life prediction for the cable sheaves. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings: Figure 1This is a schematic diagram of the structure of a cable pulley dynamic load testing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the mounting base in a dynamic load testing device for a cable pulley assembly according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the rotating wheel in a dynamic load testing device for a cable pulley assembly according to an embodiment of this utility model.

[0016] Explanation of reference numerals in the attached figures: 1. Test bench; 2. Rotary wheel; 3. Cable pulley; 4. Mounting base; 5. Second driver; 6. First driver; 7. Weight reduction hole; 8. Reinforcing rib; 9. Rope; 10. Assembly base; 11. Slider; 12. Guide rail; 13. Receiving groove; 14. Rotating shaft; 15. Bushing; 16. Bearing seat; 17. Outer ring; 18. Inner ring. Detailed Implementation

[0017] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] A dynamic load testing device for cable pulleys, such as Figures 1 to 3 As shown, the test includes a test bench 1 and a rotating wheel 2 rotatably mounted on the test bench 1. The rotating wheel 2 is detachably mounted on the test bench 1. The test bench 1 is provided with a first driver 6 for driving the rotating wheel 2 to rotate. The output end of the first driver 6 is detachably connected to the rotating wheel 2. The test bench 1 is provided with mounting seats 4 for mounting cable pulleys 3 at positions corresponding to the circumference of the rotating wheel 2. The mounting seats 4 are slidably mounted on the test bench 1. The sliding direction of the mounting seats 4 is the same as the radial direction of the rotating wheel 2. The test bench 1 is provided with a second driver 5 for driving the mounting seats 4 to slide.

[0022] This testing device, by adopting a detachable wheel 2 design, allows operators to replace the appropriate wheel 2 for testing as needed, thereby meeting the dynamic load testing requirements of different types or sizes of cable pulleys 3, and improving the versatility and applicability of this dynamic load testing device.

[0023] Preferably, the rotating wheel 2 includes an outer ring 17 and an inner ring 18, which are coaxially arranged. The axial thickness of the outer ring 17 is greater than that of the inner ring 18. The inner ring 18 is rotatably mounted on the test bench 1 via a rotating shaft 14. By adopting the above-described structure, the cross-sections of the outer ring 17 and the inner ring 18 can form a T-shaped structure. Compared with other structures, this structure of the rotating wheel 2 has higher structural strength and can better apply pressure to the cable pulley 3 on the mounting base 4 to complete the dynamic load test. This is beneficial to improving the reliability of this testing device and to improving the testing effect and accuracy of the cable pulley 3.

[0024] In practical applications, the first driver 6 can be a drive motor. The fixed end of the drive motor can be installed and fixed on the test bench 1 by conventional means such as screws, and the output end can be connected to the rotating shaft 14 by conventional means such as couplings. Among them, the mounting base 4 can be set at intervals of one, two, three or more around the cable wheel 3, so as to realize the dynamic load test of batch cable wheels 3, which is beneficial to improve the test efficiency of dynamic load test of cable wheels 3.

[0025] Specifically, taking the setting of three mounting seats 4 as an example, the test principle of this dynamic load test device for cable pulleys 3 is mainly that the first driver 6 drives the rotating wheel 2, the rotation of the rotating wheel 2 drives the cable pulleys 3 on each mounting seat 4 to rotate, and the second driver 5 pushes the mounting seat 4 to move the cable pulleys 3, applying the test preset pressure to the cable pulleys 3. The rotating wheel 2 applies the maximum wheel pressure to the three cable pulleys 3 at the same time. For example, under the condition of a design linear speed of 7m / s, the entire system can be run continuously for 1200 hours, which can effectively evaluate the performance degradation, wear and life of the cable pulleys 3 and their components under long-term, high-load operation.

[0026] Preferably, the inner ring 18 is provided with a bushing 15 that mates with the rotating shaft 14, and bearing seats 16 that mate with the rotating shaft 14 are provided on the test bench 1 at positions corresponding to both ends of the rotating shaft 14. The bearing seats 16 are detachably mounted on the test bench 1. Exemplarily, the bushing 15 and the rotating shaft 14 can be connected by conventional detachable methods such as key connections to facilitate the replacement of the rotating wheel 2. The bearing seats 16 can also be detachably mounted on the test bench 1 by conventional methods such as screws, which will not be elaborated here. In actual use, by adopting the above-described structure for the rotating wheel 2, the difficulty of replacing and assembling the rotating wheel 2 is further reduced.

[0027] In practical applications, the inner ring 18 is connected to the outer ring 17 via reinforcing ribs 8. Multiple reinforcing ribs 8 are arranged radially around the rotating shaft 14. Each reinforcing rib 8 is fixed at one end to the bushing 15 and at the other end to the outer ring 17. Weight-reducing holes 7 are provided on the inner ring 18 between adjacent reinforcing ribs 8. Connecting the inner ring 18 and outer ring 17 using reinforcing ribs 8 helps to further improve the overall structural strength of the rotor 2, while the weight-reducing holes 7 help to reduce the structural weight of the rotor 2, thereby ensuring the stability of the rotor 2's rotation.

[0028] Preferably, the outer ring 17 is provided with a detachable rope 9. Specifically, the rope 9 can be sleeved on the outer ring 17, and the outer ring 17 can also be provided with a groove to cooperate with the rope 9. Those skilled in the art can also choose a suitable method to install the rope 9 according to actual needs, so as to achieve detachable installation of the rope 9 on the outer ring 17. In actual use, by setting the rope 9 on the outer ring 17 to match the sheave 3, the actual working state of the sheave 3 can be better simulated, ensuring the accuracy of the dynamic load test of the sheave 3.

[0029] Preferably, the mounting base 4 has sliders 11 at both ends, each slider 11 having a groove, and the test bench 1 has guide rails 12 that cooperate with the grooves. For example, at least two sliders 11 are spaced apart along the sliding direction of the mounting base 4. For instance, two, three, or more sliders 11 can be spaced apart, and each slider 11 is fixed to the mounting base 4. The guide rails 12 can also be fixed to the test bench 1.

[0030] By utilizing multiple spaced sliders 11 in sliding engagement with the guide rail 12, a multi-point sliding connection between the mounting base 4 and the test bench 1 can be achieved, which helps improve the movement accuracy of the mounting base 4. At the same time, the multi-point sliding connection also disperses the force at the connection between the mounting base 4 and the test bench 1, which helps improve the stability of the mounting base 4 on the test bench 1 and ensures that the mounting base 4 can always remain stable when the rotating wheel 2 and the cable wheel 3 are engaged.

[0031] Preferably, the test bench 1 has receiving grooves 13 on the periphery of the rotating wheel 2 to accommodate the mounting base 4 and the second driver 5. The test bench 1 also has an assembly base 10 for mounting the second driver 5. The assembly base 10 is an I-shaped structure, and the flanges at both ends of the assembly base 10 can be detachably mounted on the test bench 1. The fixed end of the second driver 5 is detachably mounted on the web of the assembly base 10, and the telescopic end is detachably connected to the mounting base 4. By providing the receiving grooves 13, the mounting base 4 and the second driver 5 can be effectively shielded and protected, preventing interference from external equipment during the test.

[0032] In practical applications, the test bench 1 can also be assembled from I-beams. The mounting base 10 can be bolted to the test bench 1. The second actuator 5 can be a hydraulic cylinder or a pneumatic cylinder, etc. The fixed end of the second actuator 5 can be bolted to the web of the mounting base 10, and the telescopic end can also be bolted to the mounting base 4. Compared with other structures, the I-beam structure of the mounting base 10 not only has high structural strength and good stability, ensuring that the second actuator 5 can stably drive the mounting base 4 to move, but also the mounting base 10 can strengthen the structure of the receiving groove 13 of the test bench 1, which is beneficial to improving the overall structural strength and stability of the test bench 1, thereby further improving the reliability of this testing device during the testing process.

[0033] This utility model discloses a dynamic load testing device for cable sheaves. By installing a detachable rotating wheel on a test bench and driving the wheel's rotation using a first drive device, testers can install and arrange the cable sheaves according to actual testing needs, enabling rapid testing of batch cable sheaves. Testers can also easily replace or adjust the rotating wheel to adapt to the dynamic load testing requirements of different types or sizes of cable sheave components. Specifically, by setting a second drive to move the mounting base and cable sheaves, the maximum wheel pressure applied by the rotating wheel in conjunction with the cable sheaves, or the additional pressure applied by the second drive, can simultaneously perform multi-axis, multi-form load loading tests on multiple cable sheaves. This more effectively exposes the fatigue, wear, deformation, or failure modes that cable sheaves may exhibit under complex stress states, thus providing more reliable product performance evaluation and life prediction for the cable sheaves.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A cable and pulley set dynamic load testing device, characterized by: The test bench (1) includes a test bench (1) and a rotating wheel (2) rotatably mounted on the test bench (1). The rotating wheel (2) is detachably mounted on the test bench (1). The test bench (1) is provided with a first driver (6) for driving the rotating wheel (2) to rotate. The output end of the first driver (6) is detachably connected to the rotating wheel (2). The test bench (1) is provided with a mounting seat (4) for mounting a cable pulley (3) at a position corresponding to the circumference of the rotating wheel (2). The mounting seat (4) is slidably mounted on the test bench (1). The sliding direction of the mounting seat (4) is the same as the radial direction of the rotating wheel (2). The test bench (1) is provided with a second driver (5) for driving the mounting seat (4) to slide.

2. The cable and pulley assembly dynamic load testing device of claim 1, wherein: The rotating wheel (2) includes an outer ring (17) and an inner ring (18), which are coaxially arranged. The axial thickness of the outer ring (17) is greater than that of the inner ring (18). The inner ring (18) is rotatably mounted on the test bench (1) via a rotating shaft (14).

3. The cable and pulley assembly dynamic load testing device of claim 2, wherein: The inner ring (18) is provided with a bushing (15) that cooperates with the rotating shaft (14). The test bench (1) is provided with bearing seats (16) that cooperate with the rotating shaft (14) at the left and right ends of the rotating shaft (14). The bearing seats (16) are detachably installed on the test bench (1).

4. The cable and pulley assembly dynamic load testing device of claim 3, wherein: The inner ring (18) is connected to the outer ring (17) by reinforcing ribs (8). Multiple reinforcing ribs (8) are arranged radially around the rotating shaft (14). Each reinforcing rib (8) is fixed at one end to the bushing (15) and at the other end to the outer ring (17).

5. The cable and pulley assembly dynamic load testing device of claim 4, wherein: The inner ring (18) is provided with weight-reducing holes (7) at the positions between two adjacent reinforcing ribs (8).

6. A cable and pulley assembly dynamic load testing device according to any one of claims 2 to 5, wherein: The outer ring (17) is provided with a detachable rope (9).

7. The cable and pulley assembly dynamic load testing device of claim 1, wherein: The mounting base (4) is provided with sliders (11) at both ends. The sliders (11) are provided with grooves. The test bench (1) is provided with guide rails (12) that slide in cooperation with the grooves.

8. The cable and pulley assembly dynamic load testing device of claim 7, wherein: At least two sliders (11) are provided at intervals along the sliding direction of the mounting base (4).

9. A cable and pulley assembly dynamic load testing device according to any one of claims 1, 7 or 8, wherein: The test bench (1) is provided with receiving slots (13) for accommodating the mounting base (4) and the second driver (5) at the positions corresponding to the rotating wheel (2).

10. The cable and pulley assembly dynamic load testing device of claim 9, wherein: The test bench (1) is provided with an assembly base (10) for installing the second driver (5). The assembly base (10) is an I-shaped structural component. The flange plates at both ends of the assembly base (10) can be detachably installed on the test bench (1). The fixed end of the second driver (5) can be detachably installed on the web plate of the assembly base (10), and the telescopic end can be detachably connected to the mounting base (4).

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