Hump speed reducer abrasion loss detection device

Abstract

The invention relates to a hump speed reducer abrasion loss detection device. The device is characterized in that a detection part is composed of a left detection part and a right detection part; the wheel distance sensing part is composed of four millimeter wave radar sensors, the left detection part is arranged in front of and behind the left detection part, and the right detection part is arranged in front of and behind the right detection part; each of the two detection parts comprises a detection contact piece, a distance measurement sensor, a transverse moving sliding table, a longitudinal moving sliding table, a longitudinal motor transition seat and a base; when the millimeter wave radar sensor does not sense the wheels of the cargo box, the detection contact piece of the left detection part moves upwards and outwards to be in contact with the inner side face of the left brake track, and the detection contact piece of the right detection part moves upwards and outwards to be in contact with the inner side face of the right brake track; when container wheels are sensed, the detection contact piece of the left detection part moves downwards and inwards to be in contact with the left side face of the stock rail, and the detection contact piece of the right detection part moves downwards and inwards to be in contact with the right side face of the stock rail. The method is safe, reliable and low in measurement cost.

Description

Technical Field

[0001] This invention relates to the field of hump reducer testing, and particularly to a hump reducer wear detection device. Background Technology

[0002] During hump yard operations, wear on the friction plates of the hump yard reducer and improper control of the brake pad width often lead to overspeeding and braking problems such as brake jamming after the sledding cars are braked by the reducer. Hump yard reducer wear detection devices are mainly divided into two categories: contact measurement and non-contact measurement. Contact measurement refers to measuring the distance between the left and right friction plates of the hump yard reducer through contact plates; non-contact measurement mainly refers to directly measuring the distance between the left and right friction plates of the hump yard reducer through optical means. The accuracy of non-contact measurement mainly depends on the optical lens, and it often fails to achieve the expected accuracy in actual testing environments with high vibration and dust. Moreover, non-contact measurement is often more expensive. Contact measurement requires contact with the rail during measurement; improper design can lead to accidents. Therefore, safety must be the primary consideration when designing contact measurement devices.

[0003] Patent CN112798050A, "A device for measuring wear and opening size of a controllable lifting arm", uses a mechanical structure and corresponding sensors to measure the wear of a hump reducer, which greatly improves the measurement efficiency. However, the device does not fully consider safety. If the device does not retract in time when the carriage wheels pass over the rails, an accident is very likely to occur.

[0004] To address the above issues, it is necessary to design a hump reducer wear detection device that fully considers safety during actual use and has low measurement costs, so as to be suitable for widespread application. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention proposes a hump reducer wear detection device.

[0006] The above-mentioned objective of this invention is achieved through the following technical solution: A hump reducer wear detection device includes a detection part, a wheel distance sensing part, and a controller; The detection section consists of a left detection section and a right detection section, which are symmetrically distributed on both sides of the main rail. The wheel distance sensing section consists of four millimeter-wave radar sensors, with one millimeter-wave radar sensor placed at the front and rear of the left detection section, and one millimeter-wave radar sensor placed at the front and rear of the right detection section. The controller is placed away from the rail and is used to control the movement of the detection section. Both the left and right detection sections include a detection contact piece, a distance measurement sensor, a lateral moving slide, a longitudinal moving slide, a longitudinal motor transition seat, and a base. The distance measurement sensor is installed at the lower end of the detection contact piece, which is fixedly connected to the upper slider of the lateral moving slide. The lateral motor of the lateral moving slide is fixedly connected to the lower slider of the longitudinal moving slide through the lateral motor transition seat. The lower end of the longitudinal motor of the longitudinal moving slide is fixedly connected to the upper side of the longitudinal motor transition seat. A pin is inserted between the lower end of the longitudinal motor transition seat and the upper part of the base, and they are elastically and relatively swinging around the center of the pin. When the millimeter-wave radar sensor does not detect the cargo box wheel, the detection contact piece of the left detection part moves upward and outward to the position of contacting the inner side of the left brake rail, and at the same time, the detection contact piece of the right detection part moves upward and outward to the position of contacting the inner side of the right brake rail. When the millimeter-wave radar sensor detects the cargo box wheel, the detection contact piece of the left detection part moves downward and inward to a position that contacts the left side of the main rail, while the detection contact piece of the right detection part moves downward and inward to a position that contacts the right side of the main rail.

[0007] Furthermore, the upper end of the longitudinal motor transition seat is provided with a side fixing plate, and the side fixing plate is provided with threaded holes; the lower part of the longitudinal motor transition seat is provided with a groove, and pin holes are coaxially provided on the left and right sides of the groove; the upper part of the base is provided with pin holes, and the lower part of the base is fixedly connected to the ground; the upper part of the base is inserted into the groove of the lower part of the longitudinal motor transition seat, and a torsion spring is respectively provided on the left and right sides of the upper part of the base in the groove. One end of the torsion spring is inserted into a reserved hole in the upper part of the base, and the other end of the torsion spring is inserted into a reserved hole on the corresponding side of the lower part of the longitudinal motor transition seat. The pin shaft is inserted into the pin holes on the left and right sides of the groove, the two torsion springs, and the pin hole in the upper part of the base, so that the upper part of the base and the lower part of the longitudinal motor transition seat form an elastic, relative swinging connection around the center of the pin shaft. Furthermore, a guide groove and a guide hole are provided on the side fixing plate on the upper part of the longitudinal motor transition seat. The guide groove is located at the middle of the left and right ends of the side fixing plate. The guide groove is a triangular groove, and the guide hole is an oblong hole, which is located between the threaded holes.

[0008] The advantages and positive effects of this invention are as follows: 1. The hump reducer wear detection device proposed in this invention has a simple structure and low cost. Moreover, it controls the movement of the detection contact piece by a motor, which has high control accuracy, high reliability, and good maintainability, and can be applied to complex environments such as hump operations.

[0009] 2. The hump reducer wear detection device proposed in this invention patent is equipped with a torsion spring in the detection section. After the device's electronic control unit fails, the detection section can be crushed when the cargo box wheels pass over it, thus avoiding operational accidents. A guide groove and guide hole are provided on the longitudinal motor transition seat of the detection section. When the cargo box drives towards the detection section at excessive speed and the detection contact piece fails to retract in time, the impact force can cause the longitudinal motor transition seat to break, and the upper part of the detection section to fall off, ensuring the safe passage of the cargo box. Attached Figure Description

[0010] Figure 1 This is an overall layout diagram of a hump reducer wear detection device according to the present invention; In the diagram: 1. Detection unit; 2. Wheel distance sensing unit; 3. Controller; 4. Cargo box wheel; 5. Left brake rail; 6. Right brake rail; 7. Base rail; Figure 2 This is an exploded perspective view of the detection part of the wear detection device for a hump reducer according to the present invention; In the diagram, 1-1: Detection contact piece; 1-2: Distance measurement sensor; 1-3: Upper slider; 1-4: Lateral motor; 1-5: Lateral motor transition seat; 1-6: Lower slider; 1-7: Longitudinal motor; 1-8: Longitudinal motor transition seat; 1-9: Pin; 1-10: Torsion spring; 1-11: Base; Figure 3 This is a schematic diagram of the longitudinal motor transition seat of the hump reducer wear detection device of the present invention; Figure 4 This is the working state of the hump reducer wear detection device of the present invention; Figure 5 This is the stopped working state of the hump reducer wear detection device of the present invention; Figure 6 This is a schematic diagram of the width L of the torsion spring in the wear detection device for a hump reducer according to the present invention. Detailed Implementation

[0011] The structure of the present invention will be further described below with reference to the accompanying drawings and embodiments. It should be noted that these embodiments are descriptive and not limiting.

[0012] Please refer to the following for a hump reducer wear detection device: Figures 1-6 It mainly consists of three parts: detection unit 1, wheel distance sensing unit 2, and controller 3. The overall layout diagram is attached. Figure 1 As shown.

[0013] The detection section 1 mainly consists of a left detection section and a right detection section. The components of the left and right detection sections are identical and symmetrically distributed on both sides of the main rail 7. The wheel distance sensing section 2 mainly consists of four millimeter-wave radar sensors. One millimeter-wave radar sensor is placed at the front and rear of the left detection section, and one millimeter-wave radar sensor is placed at the front and rear of the right detection section. The wheel distance sensing section is mainly used to detect the distance between the wheels of the sledding car and the hump reducer wear detection device. Since the wheels of the sledding car may approach the hump reducer wear detection device from the front or rear, four millimeter-wave radar sensors need to be symmetrically arranged. The controller 3 is placed away from the rails and is mainly used to control the movement of the detection section 1. The left braking rail 5 and the right braking rail 6 are located on both sides of the cargo box wheels.

[0014] As attached Figure 2 As shown, taking the left detection section as an example, the composition of the detection section and the connection method between the components are explained. The left detection section mainly consists of a detection contact piece 1-1, a distance measuring sensor 1-2, an upper slider 1-3, a horizontal motor 1-4, a horizontal motor transition seat 1-5, a lower slider 1-6, a vertical motor 1-7, a vertical motor transition seat 1-8, a pin shaft 1-9, a torsion spring 1-10, and a base 1-11. The detection contact piece consists of an upper detection contact stand and a lower plate frame. The upper slider cooperates with the horizontal motor to form a horizontal moving slide, and the lower slider cooperates with the vertical motor to form a vertical moving slide. The upper end of the vertical motor transition seat is provided with a side fixing plate, and the side fixing plate is provided with threaded holes. The lower part of the vertical motor transition seat is provided with a groove, and the left and right sides of the groove are coaxially provided with pin holes 1-8-3. The upper part of the base is provided with pin holes, and the lower part of the base is fixedly connected to the ground.

[0015] The upper end of the contact plate holder has a countersunk hole, and the upper slider 1-3 has a threaded hole. The contact plate 1-1 is fixed to the upper slider 1-3 with screws. The distance measuring sensor 1-2 is fixed to the lower end of the contact plate holder with adhesive. The controller 3 can control the upper slider 1-3 to slide left and right on the groove of the transverse motor 1-4. The transverse motor 1-4 is fixed to the transverse motor transition seat 1-5 with screws. The transverse motor transition seat 1-5 is fixed to the lower slider 1-6 with screws. The controller 3 can control the lower slider 1-6 to slide up and down on the groove of the longitudinal motor 1-7. The lower part of the longitudinal motor 1-7 is fixedly connected to the side fixing plate at the upper end of the longitudinal motor transition seat with screws. The upper part of the base is inserted into the groove in the lower part of the longitudinal motor transition seat. A torsion spring is installed in the groove on the left and right sides of the upper part of the base, respectively. One end of the torsion spring is inserted into a pre-drilled hole in the upper part of the base, and the other end is inserted into a pre-drilled hole on the corresponding side of the lower part of the longitudinal motor transition seat. A pin is inserted into the pin holes on the left and right sides of the groove, the two torsion springs, and the pin hole in the upper part of the base, allowing the upper part of the base and the lower part of the longitudinal motor transition seat to form an elastic, relative swinging connection around the center of the pin. In a naturally unloaded state, the longitudinal motor transition seat is vertically positioned.

[0016] As attached Figure 3 As shown, a guide groove 1-8-2 and a guide hole 1-8-1 are provided on the side fixing plate at the upper part of the longitudinal motor transition seat. The guide groove is located at the middle of the left and right ends of the side fixing plate, preferably a triangular groove as shown in the figure. The guide hole is an elongated hole, which is located between the threaded holes.

[0017] As attached Figure 4 As shown, when the millimeter-wave radar in the wheel distance sensing section 2 fails to detect the cargo box wheel 4, the control detection section 1 begins operation. The lower slider 1-6 of the left detection section moves the transverse motor transition seat 1-5 upwards to its limit point, and the upper slider 1-3 of the left detection section moves the detection contact piece 1-1 and the distance measuring sensor 1-2 outwards until they contact the left brake rail. Similarly, the lower slider 1-6 of the right detection section moves the transverse motor transition seat 1-5 upwards to its limit point, and the upper slider 1-3 of the right detection section moves the detection contact piece 1-1 and the distance measuring sensor 1-2 outwards until they contact the right brake rail 6. The left and right distance measuring sensors then begin measuring the distance between the two brake rails 5 and 6.

[0018] As attached Figure 5As shown, when the millimeter-wave radar in the wheel distance sensing section 2 detects that the cargo box wheel 4 is approaching, the control detection section 1 stops working. The lower slider 1-6 of the left detection section drives the transverse motor transition seat 1-5 to move downward to its limit point, and the upper slider 1-3 of the left detection section drives the detection contact piece 1-1 and the distance measurement sensor 1-2 to move inward until they contact the base rail 7; the lower slider 1-6 of the right detection section drives the transverse motor transition seat 1-5 to move downward to its limit point, and the upper slider 1-3 of the right detection section drives the detection contact piece 1-1 and the distance measurement sensor 1-2 to move inward until they contact the base rail 7.

[0019] Initially, during the installation of the hump reducer, the distance between the two brake rails 5 and 6 is measured once and recorded as the initial value. During the use of the hump reducer, the distance between the two brake rails 5 and 6 is measured periodically, recording the process value. The difference between the initial value and the process value represents the wear amount of the hump reducer.

[0020] In this embodiment, taking a pin diameter Q=35mm, load arm R=60mm, spring material elastic modulus E=19400Mpa, torsion spring width L=24mm, P=3.1416, and cargo box wheel weight G=126kg as an example, the torsion spring selection process is illustrated.

[0021] Wire diameter of torsion springs 1-10 Select the appropriate model using the following formula:

[0022] In the formula, This is the elastic modulus of the spring material, expressed in MPa. This refers to the diameter of the pin, in mm. The wire diameter for the torsion spring is in mm. The lever arm of the load is expressed in mm. It is a constant, 3.1416; The width of the torsion spring is in mm, such as... Figure 6 As shown; This refers to the weight of the cargo box wheels, in kg.

[0023] Calculations show that the diameter of the torsion spring wire is 8mm.

[0024] The number of coils in a torsion spring is determined by the following formula:

[0025] In the formula, This refers to the number of turns of the torsion spring. The width of the torsion spring is in mm; The wire diameter for the torsion spring is in mm.

[0026] The mean diameter of a torsion spring is determined by the following formula:

[0027] In the formula, The mean diameter of the torsion spring is in mm. This refers to the diameter of the pin, in mm. The wire diameter for the torsion spring is in mm.

[0028] In summary, based on the above calculations, the selected torsion spring parameters are: mean diameter 43mm, wire diameter 8mm, and number of coils 3.

[0029] Although embodiments and drawings of the present invention have been disclosed for illustrative purposes, those skilled in the art will understand that various substitutions, variations and modifications are possible without departing from the spirit and scope of the present invention and the appended claims. Therefore, the scope of the present invention is not limited to the contents disclosed in the embodiments and drawings.

Claims

1. A device for detecting wear of a hump reducer, characterized in that: Includes a detection unit, a wheel distance sensing unit, and a controller; The detection section consists of a left detection section and a right detection section, which are symmetrically distributed on both sides of the main rail. The wheel distance sensing section consists of four millimeter-wave radar sensors, with one millimeter-wave radar sensor placed at the front and rear of the left detection section, and one millimeter-wave radar sensor placed at the front and rear of the right detection section. The controller is placed away from the rail and is used to control the movement of the detection section. Both the left and right detection sections include a detection contact piece, a distance measurement sensor, a lateral moving slide, a longitudinal moving slide, a longitudinal motor transition seat, and a base. The distance measurement sensor is installed at the lower end of the detection contact piece, which is fixedly connected to the upper slider of the lateral moving slide. The lateral motor of the lateral moving slide is fixedly connected to the lower slider of the longitudinal moving slide through the lateral motor transition seat. The lower end of the longitudinal motor of the longitudinal moving slide is fixedly connected to the upper side of the longitudinal motor transition seat. A pin is inserted between the lower end of the longitudinal motor transition seat and the upper part of the base, and they are elastically and relatively swinging around the center of the pin. When the millimeter-wave radar sensor does not detect the cargo box wheel, the detection contact piece of the left detection part moves upward and outward to the position of contacting the inner side of the left brake rail, and at the same time, the detection contact piece of the right detection part moves upward and outward to the position of contacting the inner side of the right brake rail. When the millimeter-wave radar sensor detects the cargo box wheel, the detection contact piece of the left detection part moves downward and inward to a position that contacts the left side of the main rail, while the detection contact piece of the right detection part moves downward and inward to a position that contacts the right side of the main rail.

2. The hump reducer wear detection device according to claim 1, characterized in that: The upper end of the longitudinal motor transition seat is provided with a side fixing plate, and the side fixing plate is provided with a threaded hole; the lower part of the longitudinal motor transition seat is provided with a groove, and the left and right sides of the groove are coaxially provided with pin holes; the upper part of the base is provided with pin holes, and the lower part of the base is fixedly connected to the ground; the upper part of the base is inserted into the groove of the lower part of the longitudinal motor transition seat, and a torsion spring is provided on the left and right sides of the upper part of the base in the groove. One end of the torsion spring is inserted into a reserved hole in the upper part of the base, and the other end of the torsion spring is inserted into a reserved hole on the corresponding side of the lower part of the longitudinal motor transition seat. The pin shaft is inserted into the pin holes on the left and right sides of the groove, the two torsion springs, and the pin hole in the upper part of the base, so that the upper part of the base and the lower part of the longitudinal motor transition seat are elastically connected to each other around the center of the pin shaft.

3. The hump reducer wear detection device according to claim 1, characterized in that: A guide groove and a guide hole are provided on the side fixing plate on the upper part of the longitudinal motor transition seat. The guide groove is located at the middle of the left and right ends of the side fixing plate. The guide groove is a triangular groove, and the guide hole is an oblong hole, which is located between the threaded holes.

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