A tread detection device based on wheel turning machine tool

Abstract

The present invention discloses a tread detection device based on a wheel turning machine, which belongs to the field of track measurement. It includes a sliding frame for installation on the slideway of the wheel turning machine, a first laser displacement sensor arranged at the top of the sliding frame, a mounting frame arranged at the top of the sliding frame and located beside the first laser displacement sensor, a second laser displacement sensor arranged on the mounting frame, and a reflector arranged at the top of the mounting frame and inclined to the mounting frame. The detection end of the second laser displacement sensor is arranged toward the reflector, and the detection laser of the second laser displacement sensor contacts the wheel back after being refracted by the reflector. The present invention uses a digital laser sensor to detect the outer dimensions of the wheel set, and has the characteristics of reliable structure, high precision, and full functions. At the same time, the present invention combines the structural characteristics of the wheel turning machine to effectively realize the turning and detection of the wheel set, and provide reliable data support for the economical turning and repair strategy of the wheel set.

Description

Technical Field

[0001] The invention relates to the field of track detection, and in particular to a tread detection device based on a wheel turning machine tool. Background Art

[0002] In recent years, with the continuous increase in the speed of trains in my country, higher requirements have been put forward for driving safety. As an important component of vehicle operation, wheelsets are directly related to driving safety. Wheelset tread wear, equivalent taper change, polygon and other surface parameters are important indicators that determine the safe operation of vehicles, and are also important parameters for achieving economical turning and repair of wheelsets. At present, wheel turning machine tools mainly rely on contact devices to detect the above parameters, but the contact devices are severely worn during use, and an approximate method is used when processing the wheelset profile curve, which has a certain deviation in calculation accuracy and low accuracy. Summary of the invention

[0003] In view of the shortcomings of the prior art, the present invention proposes a tread detection device based on a wheel turning machine, and the specific technical solution is as follows:

[0004] A tread detection device based on a wheel lathe comprises a sliding frame for installation on a slideway of the wheel lathe, a first laser displacement sensor arranged at the top of the sliding frame, a mounting frame arranged at the top of the sliding frame and located beside the first laser displacement sensor, a second laser displacement sensor arranged on the mounting frame, and a reflecting plate arranged at the top of the mounting frame and inclined to the mounting frame, wherein the detection end of the second laser displacement sensor is arranged toward the reflecting plate, and the detection laser of the second laser displacement sensor contacts the wheel lathe tool after being refracted by the reflecting plate.

[0005] Preferably, a wheel diameter measuring frame is provided on the sliding frame, and a wheel diameter measuring wheel rotatably connected to the wheel diameter measuring frame is provided on the wheel diameter measuring frame.

[0006] In the present invention, the tester brings the wheel diameter measuring wheel into contact with the wheelset profile. When the wheelset profile rotates, the wheel diameter measuring wheel rotates along with the wheelset. By recording the number of revolutions of the wheel diameter measuring wheel when the wheelset rotates one revolution, the wheelset circumference and the wheelset radius during the wheelset boring and repairing process can be obtained.

[0007] Preferably, the wheel diameter measuring frame is provided with a rotary encoder coaxially connected to the wheel diameter measuring wheel.

[0008] The rotary encoder arranged on the wheel diameter measuring frame and coaxially connected to the wheel diameter measuring wheel in the present invention can automatically record the number of rotations of the wheel diameter measuring wheel when the wheel diameter measuring wheel follows the rotation of the wheelset, thereby reducing the labor intensity of the tester and improving the detection accuracy of the wheelset radius change detection during the wheelset turning and repairing process of the present invention.

[0009] Preferably, the wheel diameter measuring frame comprises a wheel diameter main frame arranged on the sliding frame and a wheel diameter sub-frame arranged on the wheel diameter main frame and slidably connected to the wheel diameter main frame, and the wheel diameter measuring wheel is arranged on the wheel diameter sub-frame.

[0010] The present invention enables the wheel diameter measuring wheel to be adjusted according to the position of the wheelset during the wheelset radius measurement process by means of the sliding connection cooperation between the wheel diameter main frame and the wheel diameter auxiliary frame.

[0011] Preferably, a reflective mirror layer is provided on a side of the reflective plate close to the second laser displacement sensor.

[0012] The present invention improves the reflection efficiency of the reflective plate to the detection laser of the second laser displacement sensor by providing a reflective mirror layer on the side of the reflective plate close to the second laser displacement sensor, thereby avoiding the problems of the second laser displacement sensor failing to detect the detection laser in place and having low detection accuracy due to excessive scattering of the reflective plate during the detection process.

[0013] Preferably, the detection end of the first laser displacement sensor is arranged toward the wheelset.

[0014] In the present invention, the detection end of the first laser displacement sensor is arranged toward the wheelset and is used to measure the wheelset profile and the wheelset out-of-roundness.

[0015] Preferably, the mounting frame includes a first bracket arranged on the sliding frame and a second bracket arranged on the first bracket and detachably connected to the first bracket, and the second laser displacement sensor is arranged on the second bracket.

[0016] Preferably, the sliding frame is slidably connected to the slideway of the wheel turning machine.

[0017] The present invention sets the sliding frame on the slideway of the wheel turning machine and is slidably connected to the slideway of the wheel turning machine, so that the tester can slide the sliding frame along the slideway of the wheel turning machine to adjust the position according to the specific position of the wheelset during the measurement process, so as to achieve the optimal detection position for detection, thereby improving the detection accuracy and convenience of the present invention.

[0018] Preferably, the inclination angle between the reflector plate and the mounting frame is 135°.

[0019] The present invention has the following beneficial effects:

[0020] The second laser displacement sensor disposed on the mounting frame in the present invention detects laser light that contacts the wheel back after being refracted by the reflecting plate, thereby realizing the measurement and judgment of the relative distance between the wheel turning tool and the wheelset without affecting the normal operation of the wheel turning tool. At the same time, the present invention disposes the first laser displacement sensor at the top of the sliding frame, and sets the measuring end of the first laser displacement sensor toward the wheelset profile, thereby realizing the measurement of the wheelset profile and the wheelset out-of-roundness without contacting the wheelset profile, solving the problem of severe wear of the existing measuring device. The present invention uses a digital laser sensor to detect the external dimensions of the wheelset, and has the characteristics of reliable structure, high precision, and full functions. At the same time, the present invention combines the structural characteristics of the wheel turning machine tool, and can effectively realize the turning and detection of the wheelset, providing reliable data support for the economical turning and repair strategy of the wheelset. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a front view of the present invention;

[0023] Figure 3 It is a side view of the present invention. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] Example

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not advocated in subsequent drawings.

[0029] In the description of the present invention, it should be noted that the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "disposed", "connected", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0032] See also Figures 1 to 3 The present invention includes a sliding frame 1 for installation on the slideway of a wheel turning machine and a first laser displacement sensor 2 arranged at the top of the sliding frame 1. The sliding frame 1 is arranged on the slideway of the wheel turning machine and is slidably connected to the slideway of the wheel turning machine, so that the tester can slide the sliding frame 1 along the slideway of the wheel turning machine to adjust the position according to the specific position of the wheelset during the measurement process, so as to achieve the optimal detection position for detection, thereby improving the detection accuracy and convenience of the present invention. The detection end of the first laser displacement sensor 2 is arranged toward the wheelset and is used to measure the wheelset profile and the wheelset out-of-roundness. The present invention arranges the first laser displacement sensor 2 at the top of the sliding frame 1, and arranges the measuring end of the first laser displacement sensor 2 toward the wheelset profile, thereby realizing the measurement of the wheelset profile and the wheelset out-of-roundness without contacting the wheelset profile, solving the problem of severe wear of the existing measuring device.

[0033] See also Figure 1 A mounting frame 3 is provided at the top of the sliding frame 1 and beside the first laser displacement sensor 2. A second laser displacement sensor 4 is provided on the side of the mounting frame 3 close to the lathe tool. The second laser displacement sensor 4 is used to measure the relative distance between the lathe tool and the wheelset. A reflecting plate 5 is provided at the top of the mounting frame 3 for reflecting the detection laser of the second laser displacement sensor 4. The reflecting plate 5 is tilted with the mounting plate and the inclination angle between the reflecting plate 5 and the mounting frame 3 is 135°, so that the detection laser of the second laser displacement sensor 4 contacts the lathe tool after being refracted by the reflecting plate 5. The second laser displacement sensor 4 arranged on the mounting frame 3 in the present invention contacts the lathe tool on the lathe machine after its detection laser is refracted by the reflecting plate 5, thereby realizing the measurement and judgment of the relative distance between the lathe tool and the wheelset without affecting the normal operation of the lathe tool.

[0034] See also Figure 1 to Figure 2 , a reflective mirror layer 51 is provided on the side of the reflective plate 5 close to the second laser displacement sensor 4. The present invention improves the reflection efficiency of the reflective plate 5 to the detection laser of the second laser displacement sensor 4 by setting the reflective mirror layer 51 on the side of the reflective plate 5 close to the second laser displacement sensor 4, and avoids the problems of the second laser displacement sensor 4 not being able to detect the detection laser in place and having low detection accuracy due to excessive scattering of the reflective plate 5 during the detection process. At the same time, the mounting frame 3 includes a first bracket 31 arranged on the sliding frame 1 and a second bracket 32 ​​arranged on the first bracket 31 and detachably connected. The second laser displacement sensor 4 is arranged on the second bracket 32. The present invention detachably connects the first bracket 31 and the second bracket 32, so that the tester can adjust the position of the second bracket 32 ​​and the second laser displacement sensor 4 according to the position of the lathe tool at any time to achieve the optimal detection position for detection, further improving the detection accuracy and convenience of the present invention.

[0035] The first laser displacement sensor 2 and the second laser displacement sensor 4 in the present invention are both of the model CD22-35-485C, with a reference distance of 35mm and a measuring distance of 20 to 50mm. The light source used is a red semiconductor laser with a wavelength of 655nm (visible light), an output of 0.39mW, a bright spot range (at the reference distance) of about 0.45×0.8mm, a linearity of ±0.1%FS, and a sampling period of 0.5 / 1 / 2 / 4ms (4 levels variable). The laser displacement sensor emits visible laser light to the surface of the object to be measured through its own lens. The laser light scattered by the surface of the object to be measured passes through the receiver lens and is received by the internal CCD linear camera. Depending on the distance, the CCD linear camera can see this light spot at different angles. Based on this angle and the known distance between the laser and the camera, the distance between the laser displacement sensor and the object to be measured can be calculated.

[0036] See also Figure 2 to Figure 3A wheel diameter measuring frame 6 is provided on the sliding frame 1 and is located beside the mounting frame 3. The wheel diameter measuring frame 6 is provided with a wheel diameter measuring wheel 7 rotatably connected thereto. The wheel diameter measuring wheel 7 is used to measure the circumference of the wheelset and calculate the radius of the wheelset. In the present invention, the tester contacts the wheel diameter measuring wheel 7 with the wheelset profile. When the wheelset profile rotates, the wheel diameter measuring wheel 7 rotates with the wheelset. By recording the number of revolutions of the wheel diameter measuring wheel 7 when the wheelset rotates one circle, the circumference of the wheelset and the radius of the wheelset during the turning and repairing process can be obtained. A rotary encoder 8 coaxially connected to the wheel diameter measuring wheel 7 is provided on the wheel diameter measuring frame 6. In the present invention, the rotary encoder 8 is provided on the wheel diameter measuring frame 6 and coaxially connected to the wheel diameter measuring wheel 7. When the wheel diameter measuring wheel 7 rotates with the wheelset, the number of revolutions of the wheel diameter measuring wheel 7 can be automatically recorded, thereby reducing the labor intensity of the tester and improving the detection accuracy of the wheel radius change detection during the wheelset turning and repairing process of the present invention.

[0037] See also Figure 2 The wheel diameter measuring frame 6 includes a wheel diameter main frame 61 arranged on the sliding frame 1 and a wheel diameter sub-frame 62 arranged on the wheel diameter main frame 61 and slidably connected to the wheel diameter main frame 61, and the wheel diameter measuring wheel 7 is arranged on the wheel diameter sub-frame 62. The present invention cooperates with the sliding connection between the wheel diameter main frame 61 and the wheel diameter sub-frame 62, so that the wheel diameter measuring wheel 7 can be adjusted according to the position of the wheelset during the wheelset radius measurement process. A reset spring is provided in the wheel diameter main frame 61 and between the bottom side of the wheel diameter sub-frame 62 and the wheel diameter main frame 61. In the present invention, the reset spring is provided between the bottom side of the wheel diameter sub-frame 62 and the wheel diameter main frame 61. Through the elastic force of the reset spring itself, the wheel diameter measuring wheel 7 can always be in direct contact with the wheelset profile during the wheelset radius measurement process, thereby ensuring the measurement function and measurement accuracy of the wheel diameter measuring wheel 7.

[0038] The second laser displacement sensor 4 disposed on the mounting frame 3 in the present invention detects laser light that contacts the wheel back after being refracted by the reflector 5, thereby realizing the measurement and judgment of the relative distance between the wheel turning tool and the wheelset without affecting the normal operation of the wheel turning tool. At the same time, the present invention disposes the first laser displacement sensor 2 at the top of the sliding frame 1, and sets the measuring end of the first laser displacement sensor 2 toward the wheelset profile, thereby realizing the measurement of the wheelset profile and the wheelset out-of-roundness without contacting the wheelset profile, solving the problem of severe wear of the existing measuring device. The present invention uses a digital laser sensor to detect the external dimensions of the wheelset, and has the characteristics of reliable structure, high precision, and full functions. At the same time, the present invention combines the structural characteristics of the wheel turning machine tool, and can effectively realize the turning and detection of the wheelset, providing reliable data support for the economical turning and repair strategy of the wheelset.

[0039] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of more restrictions, the elements defined by the sentence "includes..." do not exclude the existence of other identical elements in the article or device including the elements.

[0040] The above are only preferred embodiments of the present invention and are 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 tread detection device based on a wheel turning machine, characterized in that: The invention comprises a sliding frame (1) for being mounted on a slideway of a wheel turning machine, a first laser displacement sensor (2) arranged at the top of the sliding frame (1), a mounting frame (3) arranged at the top of the sliding frame (1) and located beside the first laser displacement sensor (2), a second laser displacement sensor (4) arranged on the mounting frame (3), and a reflecting plate (5) arranged at the top of the mounting frame (3) and inclined to the mounting frame (3), wherein the detection end of the second laser displacement sensor (4) is arranged toward the reflecting plate (5), and the detection laser of the second laser displacement sensor (4) contacts the wheel back after being refracted by the reflecting plate (5); the detection end of the first laser displacement sensor (2) is arranged toward the wheelset and is used to measure the wheelset profile and the wheelset out-of-roundness; and the second laser displacement sensor (4) is used to measure the relative distance between the wheel turning tool and the wheelset.

2. The tread detection device based on a wheel turning machine according to claim 1 is characterized in that: The sliding frame (1) is provided with a wheel diameter measuring frame (6), and the wheel diameter measuring frame (6) is provided with a wheel diameter measuring wheel (7) rotatably connected thereto.

3. The tread detection device based on a wheel turning machine according to claim 2 is characterized in that: The wheel diameter measuring frame (6) is provided with a rotary encoder (8) coaxially connected to the wheel diameter measuring wheel (7).

4. The tread detection device based on a wheel turning machine according to claim 3 is characterized in that: The wheel diameter measuring frame (6) comprises a wheel diameter main frame (61) arranged on the sliding frame (1) and a wheel diameter sub-frame (62) arranged on the wheel diameter main frame (61) and slidably connected to the wheel diameter main frame (61), and the wheel diameter measuring wheel (7) is arranged on the wheel diameter sub-frame (62).

5. The tread detection device based on a wheel turning machine according to claim 1, characterized in that: A reflective mirror layer (51) is provided on a side of the reflective plate (5) close to the second laser displacement sensor (4).

6. The tread detection device based on a wheel turning machine according to claim 1, characterized in that: The detection end of the first laser displacement sensor (2) is arranged toward the wheelset.

7. The tread detection device based on a wheel turning machine according to claim 1, characterized in that: The mounting frame (3) comprises a first bracket (31) arranged on the sliding frame (1) and a second bracket (32) arranged on the first bracket (31) and detachably connected thereto, and the second laser displacement sensor (4) is arranged on the second bracket (32).

8. The tread detection device based on a wheel turning machine according to claim 1, characterized in that: The sliding frame (1) is slidably connected to a slideway of a wheel turning machine.

9. The tread detection device based on a wheel turning machine according to claim 1, characterized in that: The inclination angle between the reflection plate (5) and the mounting frame (3) is 135°.

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