A straight rail surface flatness on-line detection device

Abstract

The utility model provides a kind of straight rail surface flatness on-line detection device, it is related to industrial detection technical field, including the detection assembly of the lower side of the detection device shell is equipped, the detection assembly includes the plane laser transmitter of the lower side of detection device shell is equipped, parallel light beam is emitted by plane laser transmitter, the change of observation irradiation point spot, the protrusion or recess of plane will cause the position deviation of light spot, simultaneously, it is combined with laser triangle geometric relation, the distance of plane laser transmitter to each irradiation point is calculated, the flatness of straight rail surface is detected simultaneously It can also calculate offset, and also can be through facade laser transmitter to straight rail side surface laser beam, according to the flatness change of judging straight rail side surface according to light spot deviation, it guarantees the completeness of measurement data, and also can be through the camera on monitoring camera to straight rail surface photograph, and data processor will collect transmission of photographing data, different degree of defect of straight rail surface can be detected, different situation is adapted.

Description

Technical Field

[0001] This utility model relates to the field of industrial testing technology, and in particular to an online testing device for the surface flatness of a straight rail. Background Technology

[0002] In equipment such as machine tools and precision instruments, which have stringent requirements for motion accuracy, the surface flatness of the straight rail (including core guiding components such as linear guides and sliding guides) is a key factor determining the overall machining accuracy and operational stability of the equipment. Its accuracy level is directly equivalent to the "reference accuracy" of the equipment. As the motion guide carrier for cutting tools, worktables, or measuring probes, the straight rail needs to provide an absolutely accurate linear reference for mechanical motion. Any slight flatness deviation will be amplified through motion transmission, ultimately affecting the quality of the end product. Therefore, it is necessary to equip the straight rail flatness detection device to ensure the accuracy of the end product, reduce quality loss, avoid safety risks, and meet industry compliance requirements.

[0003] A search revealed that the document with publication number "CN219045957U" mentions that "this utility model provides a surface flatness detection device, relating to the field of distribution box manufacturing technology. The surface flatness detection device includes: a detection table and a detection component. Support plates are fixedly installed on both sides of the detection table, and a support component for mounting and supporting the detection component is installed between the two support plates. The detection component includes a horizontal mounting plate slidably mounted on the support component, and vertical mounting plates are installed at both ends of one side of the horizontal mounting plate. Detection sensors are fixedly installed on the opposite side of the two vertical mounting plates and at the bottom of the horizontal mounting plate." This device can simultaneously detect multiple planes of an object, improving the detection efficiency of the device.

[0004] However, traditional methods for inspecting the surface flatness of straight rails often rely on manual measurement using handheld calipers or string lines. These methods are not only inaccurate but also inefficient, making them unsuitable for mass production. Furthermore, they cannot measure dynamic flatness changes during the operation of the straight rail in real time, thus failing to capture dynamic defects. In addition, manual data recording can easily lead to errors and makes it difficult to visually demonstrate the flatness changes at different locations on the straight rail surface. Utility Model Content

[0005] To overcome the above deficiencies, this utility model provides an online detection device for the surface flatness of a straight rail, aiming to solve the problems mentioned above.

[0006] To achieve the above objectives, this utility model provides the following technical solution: An online detection device for the surface flatness of a straight rail includes a detection device housing. A detection component is mounted on the lower side of the detection device housing. The detection component includes a planar laser emitter mounted on the lower side of the detection device housing. A monitoring camera is disposed on the front side of the planar laser emitter. A hydraulic lifting rod is disposed on the right side of the monitoring camera. A movable base is disposed on the lower side of the hydraulic lifting rod. A vertical laser emitter is mounted on the inner surface of the movable base. A movable roller is mounted on the lower side of the movable base. A digital encoder is mounted on the inner side of the movable roller. A camera is disposed at the center of the outer surface of the monitoring camera. Strip light sources are disposed on both sides of the camera. A Bluetooth module is disposed on the rear side of the detection device housing. A data processor is disposed on the upper front side of the detection device housing. A charging port is disposed on the front side of the detection component.

[0007] As a further description of the above technical solution: The detection device housing is welded to the Bluetooth module, the data processor is welded to the detection device housing, and the Bluetooth module and data processor are connected by telecommunications.

[0008] As a further description of the above technical solution: The planar laser emitters are arranged in nine groups at equal intervals, and each planar laser emitter is an infrared laser femtosecond emitter.

[0009] As a further description of the above technical solution: The hydraulic lifting rods are symmetrically arranged on the left and right sides of the detection device housing, and the hydraulic lifting rods are arranged in two sets, front and back. The movable base is raised and lowered by the hydraulic lifting rods.

[0010] As a further description of the above technical solution: The facade laser emitter is welded to the mobile base, and the facade laser emitter is arranged at equal intervals.

[0011] As a further description of the above technical solution: The digital encoder is connected to the data processor by telecommunications, and the digital encoder can transmit signals to collect data when the axle of the moving roller rotates.

[0012] As a further description of the above technical solution: The camera has strip light sources on both sides, and the strip light sources are LED light sources.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This invention, by setting up a detection component, emits a parallel beam of light through a planar laser emitter and observes the changes in the light spot at the irradiation point. The convexity or concavity of the plane will cause the position of the reflected light spot to shift. At the same time, combined with the laser trigonometric relationship, the distance from the planar laser emitter to each irradiation point on the plane is calculated. While detecting the flatness of the straight rail surface, the offset can also be calculated. At the same time, a laser beam can be emitted to the side of the straight rail through a vertical laser emitter, and the change in the flatness of the side of the straight rail can be judged based on the light spot offset, thus ensuring the integrity of the measurement data.

[0014] This invention utilizes a digital encoder and a monitoring camera. As the moving roller moves, the digital encoder outputs pulse signals to mark the track surface position corresponding to the distance change data during the roller's movement. The number of pulses is proportional to the moving distance, ensuring the accuracy of the data when the external device displays the contour curve and preventing excessive errors. Simultaneously, the monitoring camera can take pictures of the straight track surface, and the data processor collects and transmits the picture data, enabling the detection of defects of varying degrees on the straight track surface and adapting to different situations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall appearance structure of this utility model; Figure 2 This is a schematic diagram of the overall bottom structure of this utility model; Figure 3 This is a schematic diagram of the overall side structure of this utility model; Figure 4 This is a schematic diagram of the monitoring camera structure of this utility model.

[0016] Numbered in the diagram: 1. Detection device housing; 2. Detection components; 3. Bluetooth module; 4. Data processor; 5. Charging port; 201. Planar laser emitter; 202. Monitoring camera; 203. Hydraulic lifting rod; 204. Moving base; 205. Vertical laser emitter; 206. Moving roller; 207. Digital encoder; 208. Camera; 209. Strip light source. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4As shown, this utility model provides a technical solution: an online detection device for the surface flatness of a straight rail, including a detection device housing 1, a detection component 2 installed on the lower side of the detection device housing 1, the detection component 2 including a planar laser emitter 201 installed on the lower side of the detection device housing 1, a monitoring camera 202 arranged on the front side of the planar laser emitter 201, a hydraulic lifting rod 203 arranged on the right side of the monitoring camera 202, a movable base 204 arranged on the lower side of the hydraulic lifting rod 203, a vertical laser emitter 205 installed on the inner surface of the movable base 204, a movable roller 206 installed on the lower side of the movable base 204, a digital encoder 207 installed on the inner side of the movable roller 206, a camera 208 arranged at the center of the outer surface of the monitoring camera 202, strip light sources 209 arranged on both sides of the camera 208, a Bluetooth module 3 arranged on the rear side of the detection device housing 1, a data processor 4 installed on the upper front side of the detection device housing 1, and a charging port 5 arranged on the front side of the detection component 2.

[0019] Furthermore, the detection device housing 1 is welded to the Bluetooth module 3, and the data processor 4 is welded to the detection device housing 1. The Bluetooth module 3 and the data processor 4 are connected by telecommunications. The data is processed and transmitted through the data processor 4 and digitally converted. The Bluetooth module 3 and the data processor 4 are connected to external devices. The data processed by the data processor 4 is transmitted to a mobile phone or computer through the Bluetooth module 3. The longitudinal and transverse contour curves of the track surface are connected in series on the display device, allowing for more intuitive monitoring of data changes.

[0020] Furthermore, the planar laser emitters 201 are arranged in nine groups at equal intervals, and the planar laser emitters 201 are infrared laser femtosecond emitters. A parallel laser beam is emitted from the planar laser emitters 201 onto the surface of the straight track, and a tiny light spot is formed at the irradiation point. The changes in the light spot at the irradiation point are observed. The convexity or concavity of the plane will cause the position of the reflected light spot to shift. At the same time, combined with the laser trigonometric relationship, the distance from the planar laser emitter 201 to each irradiation point on the plane is calculated. While detecting the flatness of the straight track surface, the offset can also be calculated.

[0021] Furthermore, the hydraulic lifting rods 203 are symmetrically arranged on the left and right sides of the outer shell 1 of the detection device, and the hydraulic lifting rods 203 are arranged in two sets, front and back. The movable base 204 is raised and lowered by the hydraulic lifting rods 203. The hydraulic lifting rods 203 drive the movable base 204 to move up and down, which can drive the vertical laser emitter 205 to move up and down to adapt to straight rails of different specifications.

[0022] Furthermore, the facade laser emitter 205 is welded to the movable base 204. The facade laser emitters 205 are evenly distributed. By emitting laser beams to the side of the straight rail through the facade laser emitters 205, the flatness change of the side of the straight rail can be judged according to the spot offset, thus ensuring the integrity of the measurement data.

[0023] Furthermore, the digital encoder 207 is connected to the data processor 4 by telecommunications, and the digital encoder 207 can transmit signals to collect data when the axle of the moving roller 206 rotates. When the moving roller 206 moves, the digital encoder 207 outputs pulse signals to mark the track surface position corresponding to the distance change data when the moving roller 206 moves. The number of pulses is proportional to the moving distance, which ensures the accuracy of the data when the external device displays the contour curve and does not produce excessive errors.

[0024] Furthermore, strip light sources 209 are provided on both sides of the camera 208. The strip light sources 209 are LED light sources. The camera 208 on the monitoring camera 202 takes pictures of the surface of the straight rail. The monitoring camera 202 can take pictures and record irregular defects such as weld protrusions on the surface of the straight rail. The strip light sources 209 on both sides of the camera 208 can provide illumination in dark environments. The data processor 4 collects and transmits the picture data, which can detect defects of different degrees on the surface of the straight rail and adapt to different situations.

[0025] Working Principle: First, when testing is required, the testing component 2 is placed above the straight rail to be tested using the handgrip on the upper side of the testing device housing 1. Simultaneously, it can be paired with a display device such as a mobile phone or computer via Bluetooth module 3. At the start of testing, the planar laser emitter 201 emits a parallel laser beam onto the surface of the straight rail, forming a tiny spot at the irradiation point. The flatness of the straight rail plane is detected by the positional offset of the spot. Simultaneously, the hydraulic lifting rod 203 drives the moving base 204 to move up and down, which in turn drives the vertical laser emitter 205 to move up and down. The vertical laser emitter 205 emits a parallel laser beam to measure the flatness of the side of the straight rail. At the same time, the moving rollers 206 move the testing component 2 along the straight rail at a constant speed, continuously... The device collects flatness data at different locations on the rail surface. Simultaneously, as the moving roller 206 moves, the digital encoder 207 outputs pulse signals to mark the rail surface position corresponding to the distance changes during the roller's movement. Meanwhile, the monitoring camera 202 records images of irregular defects such as weld protrusions on the straight rail surface. The strip light sources 209 on both sides of the camera 208 provide illumination in dark environments. After measurement, the data processor 4 collects, processes, and digitizes the data. The processed data is then transmitted to a mobile phone or computer via Bluetooth module 3. The data is then displayed on a screen to form longitudinal and transverse contour curves of the rail surface, allowing for more intuitive monitoring of data changes. This completes the process of using an online straight rail surface flatness detection device.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An online detection device for the surface flatness of a straight rail, comprising a detection device housing (1), characterized in that: A detection assembly (2) is installed on the lower side of the outer shell (1) of the detection device. The detection assembly (2) includes a planar laser emitter (201) installed on the lower side of the outer shell (1). A monitoring camera (202) is provided on the front side of the planar laser emitter (201). A hydraulic lifting rod (203) is provided on the right side of the monitoring camera (202). A movable base (204) is provided on the lower side of the hydraulic lifting rod (203). A vertical laser emitter (205) is installed on the inner surface of the movable base (204). A movable roller (206) is installed on the lower side of the movable base (204), and a digital encoder (207) is installed on the inner side of the movable roller (206). A camera (208) is set at the center of the outer surface of the monitoring camera (202), and a strip light source (209) is set on both sides of the camera (208). A Bluetooth module (3) is set on the rear side of the detection device housing (1). A data processor (4) is installed on the upper front side of the detection device housing (1), and a charging hole (5) is set on the front side of the detection component (2).

2. The online detection device for the surface flatness of a straight rail according to claim 1, characterized in that, The outer shell (1) of the detection device is welded to the Bluetooth module (3), the data processor (4) is welded to the outer shell (1) of the detection device, and the Bluetooth module (3) and the data processor (4) are connected by telecommunications.

3. The online detection device for the surface flatness of a straight rail according to claim 1, characterized in that, The planar laser emitter (201) is arranged in nine groups at equal distances, and the planar laser emitter (201) is an infrared laser femtosecond emitter.

4. The online detection device for the surface flatness of a straight rail according to claim 1, characterized in that, The hydraulic lifting rod (203) is symmetrically arranged on the left and right sides of the outer shell (1) of the detection device, and the hydraulic lifting rod (203) is arranged in two sets in front and behind. The movable base (204) is raised and lowered by the hydraulic lifting rod (203).

5. The online detection device for the surface flatness of a straight rail according to claim 1, characterized in that, The facade laser emitter (205) is welded to the movable base (204), and the facade laser emitter (205) is arranged at equal distances.

6. The online detection device for the surface flatness of a straight rail according to claim 1, characterized in that, The digital encoder (207) is connected to the data processor (4) by telecommunications, and the digital encoder (207) can transmit signals to collect data when the axle of the moving roller (206) rotates.

7. The online detection device for the surface flatness of a straight rail according to claim 1, characterized in that, The camera (208) is provided with strip light sources (209) on both sides, and the strip light sources (209) are LED light sources.

Images