Cab and skid locking detection method

Abstract

The application discloses a cab and skid locking detection method, comprising the following steps: simultaneously lifting different positions of the cab by using multiple lifting units; if the cab and the skid are locked, the skid rises synchronously with the cab, and a gap appears between the skid and the roller bed; if the cab and the skid are not locked, the skid is still on the roller bed, and no gap exists between the skid and the roller bed; gaps between different positions of the skid and the roller bed are detected by using multiple detection units; and a control unit judges the locking state between the skid and the cab according to feedback data of the multiple detection units. The detection method is suitable for locking detection of skids of different vehicle models, is more universal, and improves detection efficiency and reduces detection cost.

Description

Technical Field

[0001] This invention relates to a skid detection device, and more particularly to a method for detecting the locking of the cab and skid. Background Technology

[0002] In the automotive cab painting production workshop, the entire process of cleaning, washing, drying, and painting the cab must ensure that the cab and skid are locked together to guarantee the safe and normal operation of the entire production line. If the cab and skid fall off due to lack of locking, not only will a cab be damaged, but the losses caused by the shutdown of the salvage equipment will be incalculable.

[0003] Although the connection between the skid and the cab is widely used on automotive roller production lines, the locking detection equipment for the skids remains relatively simple. This is because each production line varies in size and scale, produces different types of vehicles for different purposes, and only one detection station is needed per production line; therefore, there is currently no standardized batch detection equipment. The detection principle primarily utilizes photoelectric detection to check if the locking device is in place. The development of skid locking detection devices is also constrained by the following factors: 1. The working environment and production line process are different in each factory. The size of the roller bed and the production speed of the production line are all uncertain factors. Therefore, the size and placement of the testing equipment need to be determined according to local conditions before the testing principle and other matters can be considered.

[0004] 2. The locking devices between the skid and the car body are different on each production line. The place to be tested is the connection between the skid and the car body.

[0005] 3. A production line may carry multiple different car models, each with different exterior dimensions. If contact-type inspection equipment is to be installed, there will be many different mechanical interferences, and the contact points are different for each car model. One piece of equipment may only be able to inspect one type of car model.

[0006] 4. The roller bed must be stopped during inspection, which will affect production efficiency to some extent. Therefore, the inspection time must be controlled.

[0007] 5. The inspection procedure requires the cooperation of the roller bed production line, so the control program is not just a standalone inspection program, but also requires modification of the original production line's control program, resulting in a huge workload.

[0008] 6. If the testing device needs to make contact with the lifting, the strength requirements of the device and the vehicle body must be considered. It must not only meet the force required for lifting, but also ensure that the newly processed vehicle body shape is not damaged after lifting, and further ensure that the vehicle body shape is not damaged during the forward, backward, up and down movement of the equipment.

[0009] 7. If the vehicle body is not locked, the device will alarm and stop the roller bed movement, halting the entire production line. How to relock the skid or remove the problematic skid and cab connection seat entirely from the production line?

[0010] The information disclosed in this background section is only intended to enhance the understanding of the background technology of this application, and therefore may include prior art that is not known to those skilled in the art. Summary of the Invention

[0011] In response to the problems mentioned in the background art, the present invention proposes a method for detecting the locking of the cab and skid, which is applicable to the locking detection of skids of different vehicle models, has greater versatility, improves detection efficiency, and reduces detection costs.

[0012] To achieve the above-mentioned objectives, the present invention employs the following technical solution: This invention provides a method for detecting the locking of a cab and a skid, wherein the skid is locked to the cab and is mounted on a roller bed. The detection method includes: Multiple lifting units are used to simultaneously lift different positions of the cab; If the cab is locked to the skid, the skid rises synchronously with the cab, and a gap appears between the skid and the roller bed; If the cab and the skid are not locked, the skid will remain on the roller bed with no gap between them; Multiple detection units are used to detect the gap between the skid and the roller bed at different positions; The control unit determines the locking status between the skid and the cab based on feedback data from multiple detection units.

[0013] In some embodiments of this application, the lifting unit has four components, which lift the reinforcing beam of the cab; The detection unit also has four units, which are located at the four corners of the roller bed.

[0014] In some embodiments of this application, the lifting unit has a lifting arm capable of moving in both a horizontal and a vertical direction, the lifting arm being used to lift the cab, specifically the reinforcing beam of the cab.

[0015] In some embodiments of this application, each of the lifting units is provided with a plurality of first proximity sensors at intervals in the vertical direction, and the first proximity sensor at each height position corresponds to the lifting start position of a certain type of cab. When all of the lifting arms reach the first proximity sensor at the same height, the lifting arms simultaneously lift the cab.

[0016] In some embodiments of this application, before the lifting arm lifts the cab, the lifting arm is in a low position, the lifting arm first extends under the cab, and then moves upward to the height position of the first proximity sensor.

[0017] In some embodiments of this application, each of the lifting units is provided with a second proximity sensor, which is located below the plurality of first proximity sensors. After the locking detection is completed, the lifting arm needs to be lowered to the height position of the second proximity sensor and then moved back so that the lifting arm moves out of the cab.

[0018] In some embodiments of this application, the lifting unit is provided with a horizontal travel limit switch to limit the horizontal movement range of the lifting arm.

[0019] In some embodiments of this application, the lifting unit is provided with a vertical travel limit switch to limit the vertical movement range of the lifting arm.

[0020] In some embodiments of this application, if the control unit receives gap data from the detection unit that continuously increases and continues for a period of time, it determines that the skid is locked to the cab. If the control unit receives the gap data fed back by the detection unit, which continuously increases but returns to zero after a period of time, it is determined that the skid is not locked to the cab. If the control unit receives zero data from the detection unit, it determines that the skid is not locked to the cab.

[0021] Compared with the prior art, the advantages and positive effects of the present invention are: The skid locking detection method disclosed in this application sets different lifting positions of the lifting unit according to different types of cabs, which can realize the detection of the locking status of various models of cabs and skids, making it more versatile; the roller bed does not need to be stopped during the detection, and there is no need to change the control program of the original production line. The detection process will not affect production efficiency and reduce detection costs.

[0022] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of the skid locking detection device according to an embodiment; Figure 2 This is a schematic diagram of the lifting unit according to an embodiment; Figure 3 This is a cross-sectional view of the lifting unit according to an embodiment.

[0025] Figure label: 1-Driver's cab; 2-Sled; 3-Roller bed; 100-Lifting unit, 110-Lifting arm, 111-Connecting part, 112-First slider, 120-Column, 121-Mounting cavity, 122-First slide rail, 123-Second slider, 124-Support part, 130-Base, 131-Second slide rail, 140-First drive part, 141-Lead screw, 142-Nut, 150-Second drive part, 160-First proximity sensor, 170-Second proximity sensor, 180-Vertical travel limit switch.

[0026] 200 - Detection unit. Detailed Implementation

[0027] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0029] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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 between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0032] The following disclosure provides many different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0033] This embodiment discloses a cab and skid locking detection system, in which the cab 1 and skid 2 are locked together, and the skid 2 is mounted on a roller bed 3. The locking detection system specifically detects whether the cab 1 and skid 2 are locked together.

[0034] Reference Figure 1 The locking detection system mainly includes a lifting unit 100, a detection unit 200, and a control unit (not shown). Figure 1 Only the floor portion of the driver's cab 1 is shown in the image.

[0035] Multiple lifting units 100 are provided on both sides of the roller bed 3. Each lifting unit 100 has a lifting arm 110, which is used to lift the cab 1. The lifting arm 110 can move in both the horizontal and vertical directions.

[0036] The detection unit 200 is used to detect the gap between the skid 2 and the roller bed 3 and to feed the detection data back to the control unit.

[0037] The control unit controls the lifting unit 100 to move to different positions according to different models of cab 1 in order to lift cab 1. The control unit determines the locking status between skid 2 and cab 1 based on the feedback data from detection unit 200.

[0038] The specific testing method is as follows: Multiple lifting units 100 are used to simultaneously lift different positions of the cab 1; If the cab 1 and the skid 2 are locked, the skid 2 will rise synchronously with the cab 1, and a gap will appear between the skid 2 and the roller bed 3. If the cab 1 and the skid 2 are not locked, the skid 2 will still be on the roller bed 3, and there will be no gap between them; Multiple detection units 200 are used to detect the gap between different positions of the skid 2 and the roller bed 3, and the detection units 200 feed the detection data back to the control unit. The control unit determines the locking status between the skid 2 and the cab 1 based on feedback data from multiple detection units 200. If the cab 1 and the skid 2 are locked, the skid 2 will rise synchronously with the cab 1 and disengage from the roller bed 3. At this time, a gap appears between the skid 2 and the roller bed 3. The detection unit 200 detects this gap data and feeds it back to the control unit. The control unit determines that the cab 1 and the skid 2 are locked. If the cab 1 and the skid 2 are not locked, the skid 2 will not move and will continue to be located on the roller bed 3. At this time, the detection unit 200 detects that there is no gap between the skid 2 and the roller bed 3 and feeds it back to the control unit. The control unit determines that the cab 1 and the skid 2 are not locked.

[0039] This example provides a more specific and reliable judgment method: if the control unit receives the gap data fed back by the detection unit 200, which continues to increase for a period of time, then it is determined that the skid 2 is locked to the cab 1. If the control unit receives feedback from the detection unit 200 that the gap data is constantly increasing but returns to zero after a period of time, this situation may be because the lock between the cab 1 and the skid 2 is not secure and the skid 2 is disengaged during the lifting process. In this case, it is determined that the skid 2 and the cab 1 are not locked. If the control unit receives zero data from the detection unit 200, it determines that the skid 2 is not locked to the cab 1.

[0040] The lifting arm 110 moves horizontally to extend into / out of the cab 1, and moves vertically to lift and lower the cab 1.

[0041] Different lifting positions of the lifting arm 110 are set according to different types of cabs 1, which can realize the detection of the locking status of various models of cabs 1 and skids 2, making it more versatile; the roller bed 3 does not need to be stopped during the detection, and the control program of the original production line does not need to be changed. The detection process will not affect production efficiency and reduce detection costs.

[0042] In some embodiments of this application, the detection unit 200 can be a photoelectric sensor, which is disposed on the roller bed 3.

[0043] In some embodiments of this application, four lifting units 110 and four detection units 200 are provided respectively. The four lifting units 110 are located on both sides of the roller bed 3 to simultaneously lift the four positions of the cab 1. The four detection units 200 are located at the four corners of the roller bed 3.

[0044] In some embodiments of this application, the lifting arm 110 specifically lifts the reinforcing beam of the cab 1 to ensure that the newly processed vehicle body shape is not damaged during the lifting process.

[0045] Regarding the specific structure of the lifting unit 100, some embodiments of this application refer to... Figure 2 and Figure 3 The lifting unit 100 also includes a base 130, on which a column 120 is slidably mounted in the horizontal direction, and a lifting arm 110 is slidably mounted on the column 120 in the vertical direction.

[0046] The horizontal movement of the lifting arm 110 is achieved by sliding the column 120 horizontally along the base 130.

[0047] The horizontal movement of the column 120 and the vertical movement of the lifting arm 110 are driven and controlled independently by two independent drive units.

[0048] Specifically, in some embodiments of this application, for the drive structure of the lifting arm 110 moving vertically along the column 120, a mounting cavity 121 is formed inside the column 120, and a first drive unit 140, specifically a servo motor, is provided at the top of the column 120. A lead screw 141 is provided at the power output end of the first drive unit 140, and the lead screw 141 is located inside the mounting cavity 121. The lead screw 141 is fixedly connected to one end of the lifting arm 110 by a nut 142. The up-and-down movement of the lifting arm 110 is achieved by the movement of the lead screw 141.

[0049] Furthermore, one end of the lifting arm 110 is provided with a connecting part 111, which is an L-shaped plate structure. The connecting part 111 is fixedly connected to the nut 142. The left and right opposite side walls of the column 120 are respectively provided with first slide rails 122. The connecting part 111 is provided with a first slider 112, which slides on the first slide rail 122.

[0050] The movement of the lead screw 141 drives the connecting part 111 to move up and down through the nut 142. At this time, the first slider 112 moves along the first slide rail 122. Another function of the cooperation between the first slider 112 and the first slide rail 122 is to provide a sufficiently large anti-torque force for the lifting arm 110 to meet the lifting torque requirements of the cab 1.

[0051] Multiple first sliders 112 can be provided to further enhance structural reliability.

[0052] Furthermore, the mounting cavity 121 is provided with a support part 124, and the lower end of the lead screw 141 is rotatably connected to the support part 124 through a bearing, thereby improving the structural reliability of the lead screw 141.

[0053] In some embodiments of this application, the base 130 is provided with a second drive unit 160, specifically a cylinder, for the drive structure in which the column 120 moves horizontally along the base 130. The power output end of the second drive unit 160 is fixedly connected to the bottom of the column 130. The base 130 is provided with a second slide rail 131, and the bottom of the column 120 is provided with a second slider 123, which is slidably disposed on the second slide rail 131.

[0054] The lifting unit 100 is also equipped with a variety of sensors to control the lifting action more precisely and automatically. Specifically, in some embodiments of this application, the column 120 is provided with a plurality of proximity sensors (referred to as first proximity sensors 160) at intervals along its height direction. Each first proximity sensor 160 at a height position corresponds to the lifting start position of a certain type of cab 1.

[0055] When multiple lifting arms 110 reach the first proximity sensor 160 at the same height, the multiple lifting arms 110 simultaneously lift the cab 1 to achieve synchronous horizontal lifting of the cab 1.

[0056] Before the lifting arm 110 lifts the cab 1, the lifting arm 110 is in a low position. The lifting arm 110 first extends horizontally under the cab 1, and then moves upward to the height position of the first proximity sensor 160.

[0057] Figure 2 The lifting unit 100 shown is equipped with three first proximity sensors 160, so the lifting unit 100 can meet the detection requirements of three different types of cabs 1.

[0058] In some embodiments of this application, each lifting unit 100 has a second proximity sensor 170 on its column 120. The second proximity sensor 170 is located below a plurality of first proximity sensors 160. After the locking detection is completed, the lifting arm 110 needs to be lowered to the height position of the second proximity sensor 170 and then moved back so that the lifting arm 110 can be moved out of the cab 1.

[0059] When the lifting arm 110 reaches the height position of the second proximity sensor 170, the position of the lifting arm 110 is a safe position that allows the cab 1 to move.

[0060] In some embodiments of this application, vertical travel limit switches 180 are provided at the upper and lower ends of the column 120 to limit the range of movement of the lifting arm 110 in the vertical direction.

[0061] The base 130 is equipped with horizontal travel limit switches (not shown) near its left and right ends to limit the range of movement of the column 120 in the horizontal direction.

[0062] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0063] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for detecting the locking of a cab and a skid, wherein the skid is locked to the cab, and the skid is mounted on a roller bed, characterized in that, The detection method includes: Multiple lifting units are used to simultaneously lift different positions of the cab; If the cab is locked to the skid, the skid rises synchronously with the cab, and a gap appears between the skid and the roller bed; If the cab and the skid are not locked, the skid will remain on the roller bed with no gap between them; Multiple detection units are used to detect the gap between the skid and the roller bed at different positions; The control unit determines the locking status between the skid and the cab based on feedback data from multiple detection units; If the control unit receives the gap data fed back by the detection unit and it continues to increase for a period of time, it determines that the skid is locked to the cab. If the control unit receives the gap data fed back by the detection unit, which continuously increases but returns to zero after a period of time, it is determined that the skid is not locked to the cab. If the control unit receives zero data from the detection unit, it determines that the skid is not locked to the cab.

2. The method for detecting the locking of the cab and skid according to claim 1, characterized in that, The lifting unit has four components, which lift the reinforcing beam of the cab; The detection unit also has four units, which are located at the four corners of the roller bed.

3. The cab and skid locking detection method according to claim 1, characterized in that, The lifting unit has a lifting arm that can move in both the horizontal and vertical directions. The lifting arm is used to lift the cab, specifically the reinforcing beam of the cab.

4. The cab and skid locking detection method according to claim 3, characterized in that, Each of the lifting units is provided with a plurality of first proximity sensors at intervals in the vertical direction, and the first proximity sensor at each height position corresponds to the lifting start position of a certain type of cab. When all of the lifting arms reach the first proximity sensor at the same height, the lifting arms simultaneously lift the cab.

5. The cab and skid locking detection method according to claim 4, characterized in that, Before the lifting arm lifts the cab, the lifting arm is in a low position. The lifting arm first extends under the cab and then moves upward to the height position of the first proximity sensor.

6. The cab and skid locking detection method according to claim 4, characterized in that, Each of the lifting units is equipped with a second proximity sensor, which is located below the plurality of first proximity sensors. After the locking detection is completed, the lifting arm needs to be lowered to the height position of the second proximity sensor and then moved back so that the lifting arm moves out of the cab.

7. The method for detecting the locking of the cab and skid according to any one of claims 3 to 6, characterized in that, The lifting unit is equipped with a horizontal travel limit switch to limit the horizontal movement range of the lifting arm.

8. The method for detecting the locking of the cab and skid according to any one of claims 3 to 6, characterized in that, The lifting unit is equipped with a vertical travel limit switch to limit the vertical movement range of the lifting arm.

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