Long strip-shaped traction machine detection equipment

Abstract

The utility model provides a strip-shaped traction machine detection device. The strip-shaped traction machine detection device comprises a support, an adjusting frame, a tensioning wheel, a guide wheel, an output wheel shaft assembly, a transmission belt and a dynamometer. The support is provided with a detection station used for installing a traction machine to be detected. The guide wheel and the output wheel shaft assembly are installed on the support, and the output wheel shaft assembly is connected with a main shaft of the dynamometer and used for providing torque loads. The tensioning wheel is installed on the support through an adjusting frame and used for adjusting the tensioning degree of the transmission belt. By adjusting the tensioning degree of the transmission belt, a radial load is applied to a traction wheel of the traction machine to be tested. The equipment has the advantages that factory detection is carried out on the long-strip-shaped traction machine, and measurement of radial loads, torque loads, noise, vibration and the like of the traction machine can be more practical.

Description

Technical Field

[0001] This utility model relates to the field of traction machine technology, specifically to a long strip-shaped traction machine testing device. Background Technology

[0002] Long strip traction machines are characterized by a large perimeter and a small radial dimension. Their performance characteristics include low torque and high speed. Therefore, long strip traction machines are suitable for installation environments without a machine room.

[0003] Traction machines rely on traction sheaves to output torque. To ensure stable force distribution on the traction sheave, many long traction machines design the traction sheave as a beam structure. During factory testing of traction machines, it is impossible to use traditional methods to directly suspend wire ropes on the traction sheave to simulate on-site loads. In addition, the shaft extensions at both ends of many long traction machines are short or obstructed, making it impossible to test the connection between the main shaft and the external drive shaft.

[0004] The current practice is to produce non-standard prototypes, extending one end of the main shaft beyond the traction machine, and connecting the extended main shaft to the main shaft of the dynamometer for testing. The drawback of this testing method is that:

[0005] 1. It can only apply torque load to the traction machine, but cannot apply constant radial load to the main shaft of the traction machine, so it cannot simulate the on-site stress conditions and the test results are inaccurate;

[0006] 2. The stress point of the traction machine during actual operation is at the traction sheave, but the stress point is offset under non-standard structure, resulting in large measurement errors in noise and vibration.

[0007] 3. Non-standard structures damage the original structure, leading to large testing errors;

[0008] 4. The test prototype was manufactured using non-standard methods, resulting in higher testing costs;

[0009] 5. It cannot be used for batch testing of standard traction machines in mass production, resulting in insufficient practicality.

[0010] To address the aforementioned issues, those skilled in the art urgently need to improve existing testing methods to provide a dedicated device capable of performing batch testing on manufactured long strip traction machines. Utility Model Content

[0011] The purpose of this invention is to address the shortcomings of existing technologies by providing a testing device for long strip traction machines that can perform factory inspections and more accurately measure radial load, torque load, noise, and vibration.

[0012] To achieve the above objectives, the technical solution adopted by this utility model is: a long strip-shaped traction machine testing device, including a support, an adjustment frame, a tensioning wheel, a guide wheel, an output wheel shaft assembly, a transmission belt, and a dynamometer;

[0013] The bracket is provided with a testing station for installing the traction machine to be tested;

[0014] The guide wheel and output wheel axle assembly are mounted on the bracket, and the output wheel axle assembly is connected to the main shaft of the dynamometer to provide torque load;

[0015] The tensioning wheel is mounted on the bracket via an adjusting frame and is used to adjust the tension of the transmission belt;

[0016] The output wheel, tensioning wheel in the guide wheel and output wheel shaft assembly and the traction wheel of the traction machine under test in the testing station are located on the same plane, which is used to link the output wheel, tensioning wheel in the guide wheel and output wheel shaft assembly and the traction wheel of the traction machine under test by means of rewinding the transmission belt.

[0017] A radial load is applied to the traction wheel of the traction machine under test by adjusting the tension of the drive belt.

[0018] Preferably, the bracket includes a base and a left bracket and a right bracket fixed on the base, and the space between the left bracket and the right bracket is for the installation of the adjustment frame, tension wheel, guide wheel, output wheel shaft assembly and transmission belt.

[0019] Preferably, there are two guide wheels, located on both sides of the testing station, and the highest point of the wheel surface of the two guide wheels is higher than the height of the traction wheel of the corresponding traction machine to be tested in the testing station.

[0020] Preferably, the output wheel axle assembly is located below the inspection station.

[0021] Preferably, the tensioning wheel and the adjusting frame are located on one side of the central area of ​​the testing station and the output wheel axle assembly.

[0022] Preferably, the transmission belt is a belt or a wire rope.

[0023] Preferably, the direction of movement of the adjustment frame is vertical, horizontal, or diagonal.

[0024] Preferably, the traction machine to be tested in the testing station has two traction wheels that are coaxially arranged, and the corresponding adjustment frame, tension wheel, guide wheel and transmission belt are also set in two sets. The output wheel shaft assembly includes two matching output wheels and one output shaft, and the two output wheels are coaxially installed.

[0025] Preferably, the output shaft of the output wheel axle assembly is connected to the main shaft of the dynamometer via a universal joint.

[0026] Preferably, the adjustment frame is equipped with a tension sensor to detect the applied tension pressure.

[0027] Preferably, the transmission belt is wound sequentially around the upper part of the two guide wheels, the lower part of the output wheel, the upper part of the traction wheel to be tested, and the lower part of the tensioning wheel to form a closed loop.

[0028] This invention has substantial features and advancements compared to existing technologies. Specifically, it utilizes a rewinding method of the transmission belt to transmit the output of the traction sheave through the conversion between the transmission belt and the pulley system, ultimately reaching the dynamometer via the output wheel axle assembly. During this process, the radial load applied to the surface of the traction sheave is controlled by adjusting the tension of the transmission belt via the tensioning pulley. The torque load is tested through the cooperation of the dynamometer, transmission belt, and pulley system. Moreover, this connection method is well-suited to the actual operating conditions of the traction machine, making the simulated test results of the traction machine more accurate. It solves the problems that long strip traction machines are difficult to test using traditional methods and that inaccurate measurements are not possible with non-standard samples.

[0029] Because the rewinding test method is highly versatile, it can be used for batch testing of traction machines and can also be extended to testing of other types of transmission devices. This not only improves testing efficiency but also has wide applicability. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of a long strip-shaped traction machine testing device according to this utility model.

[0031] Figure 2 This is a detailed schematic diagram of a long strip-shaped traction machine testing device according to this utility model.

[0032] Figure 3 This is a schematic diagram showing the internal details of a long strip-shaped traction machine testing device according to this utility model.

[0033] Figure 4 This is a schematic diagram of the rewinding structure in a long strip-shaped traction machine testing device of this utility model.

[0034] Figure 5 This is a schematic diagram of the structure of the traction machine to be tested.

[0035] Figure 6 This is a schematic diagram of the adjustment frame structure in a long strip-shaped traction machine testing device of this utility model.

[0036] In the diagram: 1. Base; 2. Adjustment frame; 3. Tensioner wheel; 4. Guide wheel; 5. Drive belt; 6. Dynamometer; 7. Traction machine; 8. Traction wheel; 9. Output wheel; 10. Output shaft; 11. Universal joint; 12. Left side bracket; 13. Right side bracket; 14. Tension sensor. Detailed Implementation

[0037] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0038] like Figures 1-6 As shown, a long strip-shaped traction machine testing device includes a support 1, an adjustment frame 2, a tensioning wheel 3, a guide wheel 4, an output wheel shaft assembly, a transmission belt 5, and a dynamometer 6.

[0039] In this embodiment, the support includes a base 1, a left support 12 and a right support 13, and the left support 12 and the right support 13 form a detection space.

[0040] The upper area between the left support 12 and the right support 13 is provided with a testing station for installing the traction machine 7 to be tested, which is used to temporarily clamp and fix the traction machine 7. After the traction wheel 8 of the traction machine 7 is installed in place, it is located between the left support 12 and the right support 13.

[0041] In this embodiment, the traction machine 7 has two traction wheels 8, so the matching adjustment frame 2, tension wheel 3, guide wheel 4, output wheel in the output wheel shaft assembly, and transmission belt 5 are all two sets.

[0042] The guide wheel 4 and the output wheel shaft assembly are installed between the left bracket 12 and the right bracket 13. The output wheel shaft assembly includes two output wheels 9 and an output shaft 10, with the two output wheels 9 installed coaxially.

[0043] The output shaft 10 of the output wheel axle assembly is connected to the main shaft of the dynamometer 6 via a universal joint 11 to provide torque load.

[0044] The tensioning wheel 3 is mounted on the bracket via the adjusting frame 2 and is used to adjust the tension of the transmission belt. Specifically, the adjusting frame 2 is a mechanism for adjusting the position of the tensioning wheel 3, which can be a lifting adjustment, a horizontal adjustment, or an oblique adjustment. The tension of the tensioning wheel 3 is changed by adjusting the position. The specific structural form of the adjusting frame 2 can be a linear adjustment mechanism of the lead screw, or a linear adjustment mechanism driven by a cylinder or an electric push rod, or a swing mechanism driven by an eccentric mechanism, etc.

[0045] The guide wheel 4, the output wheel 9 and tensioning wheel 3 in the output wheel shaft assembly, and the traction wheel 8 of the traction machine under test in the testing station are all on the same plane, so as to link the guide wheel 4, the output wheel 9 and tensioning wheel 3 in the output wheel shaft assembly and the traction wheel 8 of the traction machine under test by means of rewinding the transmission belt 5.

[0046] In terms of the specific installation space distribution, there are two guide wheels 4 in the same wheel system, located on both sides of the testing station.

[0047] The output wheel axle assembly is located below the testing station. The tension wheel 3 and the adjustment frame 2 are located on one side of the central area between the testing station and the output wheel axle assembly. The adjustment frame 2 is equipped with a tension sensor 14 for detecting the applied tension pressure.

[0048] The transmission belt 5 is wound sequentially around the upper part of the two guide wheels 4, the lower part of the output wheel 9, the upper part of the traction wheel 8 to be tested, and the lower part of the tension wheel 3 to form a closed loop. By adjusting the tension of the transmission belt 5, a radial load is applied to the traction wheel of the traction machine to be tested.

[0049] It is particularly important to note that in this embodiment, the transmission belt is a steel wire rope to ensure more accurate force transmission. In other embodiments, a belt can also be used, but the belt's performance parameters must be stable for ease of calculation.

[0050] The highest point of the wheel surface of the two guide wheels 4 is higher than the height of the traction wheel 8 of the corresponding traction machine to be tested in the testing station, so as to prevent the two sets of steel wire ropes passing above the traction wheel from contacting each other and causing interference.

[0051] The rope grooves of the tensioner pulley, the output shaft traction pulley, and the traction pulley of the traction machine under test are all on the same plane, ensuring that the wire rope is under stable force and has low noise during rotation.

[0052] The two sets of wire ropes are of the same length, so that the radial force on the two traction wheels of the traction machine is uniform.

[0053] In the preferred embodiment, the adjusting frame adopts a worm gear drive, which has a large transmission ratio, can easily apply a large radial load, and also has a self-locking function.

[0054] The tensioner and guide wheel are made of nylon, which has the advantages of shock absorption and noise reduction, but is not as wear-resistant as metal traction wheels. Therefore, the tensioner and guide wheel are designed to be easy to disassemble and replace. The output wheel is not easy to replace, and is made of alloy steel with a semi-circular groove design for wear resistance.

[0055] The travel of the adjusting frame should be no less than 200mm to ensure that the wire rope can be easily looped onto the guide wheel and the tensioning wheel after the tensioning wheel moves upward, and can be fully tensioned after the tensioning wheel moves downward.

[0056] A DC electromagnetic dynamometer was selected, which has good control performance and can apply stable torque.

[0057] Working principle explanation:

[0058] The traction machine 7 under test is installed at the testing station between the left support 12 and the right support 13. Then, the traction wheel 8 of the traction machine under test, as well as the matching guide wheel 4, tension wheel 3, and output wheel 9, are connected by rewinding the wire rope. During this process, the state of the adjustment frame 2 is controlled. After the rewinding connection is completed, the wire rope is tensioned and the value of the tension sensor 14 is recorded.

[0059] At this time, the tensioner 3 tightens the wire rope, and there are two wire ropes above the traction sheave 8. The upper wire rope is tightened by the two guide wheels 4, while the lower wire rope presses against the surface of the traction sheave 8, thus applying radial load to the traction machine. At this time, the tightened wire rope also generates a large radial pressure on the guide wheels 4 and the output wheel 9.

[0060] When the traction machine is powered on for testing, the traction sheave 8 of the traction machine under test drives the output sheave 9 to rotate through the friction between it and the wire rope. One end of the output shaft 10 is connected to the dynamometer 6 through the universal joint 11. By adjusting the power of the dynamometer, resistance is generated to the rotation of the output shaft, thereby realizing the torque loading of the traction machine.

[0061] After the test is completed, operate the adjustment frame to move the tension wheel, loosen and remove the wire rope on the tension wheel 3 and guide wheel 4, and then pull it out from the traction machine again.

[0062] The above solution enables the simulation testing of long strip traction machines, and the simulation test results are more accurate and reasonable than those of traditional solutions. It can be used for batch testing and has universality.

[0063] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A long-stroke hoist detection apparatus, characterized by: The traction machine testing device comprises a support, an adjusting frame, a tensioning wheel, a guide wheel, an output shaft assembly, a transmission belt and a dynamometer. A detection station for installing a traction machine to be tested is arranged on the support. The guide wheel and the output shaft assembly are arranged on the support, and the output shaft assembly is connected with a main shaft of the dynamometer to provide a torque load. The tensioning wheel is arranged on the support through the adjusting frame to adjust the tensioning degree of the transmission belt. The guide wheel, the output wheel in the output shaft assembly, the tensioning wheel and the traction wheel in the detection station corresponding to the traction machine to be tested are located on the same plane to link the guide wheel, the output wheel in the output shaft assembly, the tensioning wheel and the traction wheel of the traction machine to be tested through the transmission belt. The radial load is applied to the traction wheel of the traction machine to be tested by adjusting the tensioning degree of the transmission belt.

2. The long-streaked hoist detection apparatus according to claim 1, characterized by: The support comprises a base and left and right side supports fixed on the base, and the left and right side supports are provided with an installation space for the adjusting frame, the tensioning wheel, the guide wheel, the output shaft assembly and the transmission belt.

3. The long-streaked hoist detection apparatus according to claim 2, characterized by: The guide wheel is provided with two guide wheels located on both sides of the detection station, and the highest points of the wheel surfaces of the two guide wheels are higher than the height of the traction wheel corresponding to the traction machine to be tested in the detection station.

4. The long-streaked hoist detection apparatus according to claim 3, characterized by: The output shaft assembly is arranged below the detection station, and the tensioning wheel and the adjusting frame are located on one side of the central area of the detection station and the output shaft assembly.

5. The long-streaked hoist detection apparatus according to claim 3 or 4, characterized by: The transmission belt is a belt or a steel wire rope.

6. The long-streaked hoist detection apparatus according to claim 5, characterized by: The adjusting frame is movable in the vertical direction, the horizontal direction or the oblique direction.

7. The long-streaked hoist detection apparatus according to claim 3 or 4 or 6, characterized by: The traction wheel corresponding to the traction machine to be tested in the detection station is coaxially provided with two traction wheels, and the adjusting frame, the tensioning wheel, the guide wheel and the transmission belt matched with the traction wheels are also provided with two sets of corresponding components.

8. The long-streaked hoist detection apparatus according to claim 7, characterized by: The output shaft assembly comprises two matched output wheels and an output shaft, and the two output wheels are coaxially arranged.

9. The long-streaked hoist detection apparatus according to claim 8, characterized by: The output shaft of the output shaft assembly is connected with the main shaft of the dynamometer through a universal joint.

10. The long-stroke machine detecting apparatus according to claim 3, characterized by: The adjusting frame is provided with a tension sensor to detect the tensioning pressure. The transmission belt is wound on the upper part of the two guide wheels, the lower part of the output wheel, the upper part of the traction wheel and the lower part of the tensioning wheel in sequence to form a closed loop.

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