CN113776871A - Cab and skid locking detection method - Google Patents

Abstract

The invention discloses a cab and skid locking detection method, which comprises the following steps: simultaneously lifting different positions of the cab by using a plurality of lifting units; if the cab is locked with the skid, the skid ascends synchronously along with the cab, and a gap is formed between the skid and the roller bed; if the cab and the skid are not locked, the skid is still positioned on the roller bed, and no gap exists between the cab and the skid; detecting gaps between different positions of the skid and the roller bed by using a plurality of detection units; the control unit judges the locking state between the skid and the cab according to the feedback data of the detection units. The detection method is suitable for locking detection of the skids of different vehicle types, has stronger universality, improves the detection efficiency and reduces the detection cost.

Description

Cab and skid locking detection method

Technical Field

The invention relates to a skid detection device, in particular to a cab and skid locking detection method.

Background

In a coating production workshop of an automobile cab, the processes of cleaning, drying, painting and the like of the cab in the whole process are required to ensure that the cab and the skid are fixed together in a locking state, so that the safe and normal production of the whole production line can be ensured, and once the cab and the skid are not locked and fall off, not only one cab is damaged, but also all aspects of loss caused by shutdown and production halt caused by salvage equipment are immeasurable.

Although the connection mode of the skid and the cab is widely applied to the production line of the automobile roller bed, the locking detection equipment of the skid is single in form. Because the size and scale of each production line are different, the purposes of the produced vehicle models are different, and only one production line is needed for each detection station, so that no standard batch detection equipment exists at present. The detection principle is mainly to use photoelectricity to detect whether the locking device is in place. The development of the skid locking detection device is also limited by the following aspects:

1. the working environment of each factory building is different, the production line flow is different, the size of the roller bed, the production speed of the production line and the like are uncertain factors, so that the detection equipment needs to determine the size and the placement problem according to local conditions, and then the detection principle and other matters can be considered.

2. The skid on each production line is different from the locking device of the vehicle body, and the position to be detected is the position where the skid is connected with the vehicle body.

3. A production line can carry a plurality of different vehicle types, the appearance sizes of all the vehicle types are different, the detection equipment which is required to be in a contact type has a plurality of different mechanical interferences, the contact places of all the vehicle types are different, and one equipment can only detect one vehicle type.

4. During detection, the roller bed must stop running, and the production efficiency is influenced to a certain extent. The detection time must be controlled.

5. The detection program needs the cooperation of the roller bed production line, so the control program not only is independent detection, but also needs to change the control program of the original production line, and the workload is huge.

6. If the detection device needs to be in contact with and lifted, the strength requirement of the device and the strength requirement of the vehicle body need to be considered, the force required by lifting needs to be met, the appearance of the vehicle body which is just machined cannot be damaged after lifting is guaranteed, and the appearance of the vehicle body cannot be damaged in the processes of front-back up-down movement and the like of equipment.

7. If the car body is not locked, the device stops the movement of the roller bed after alarming, and the whole production line stops. How to re-lock the skid or move the problematic skid and the cab connection seat integrally out of the production line.

The above information disclosed in this background section is only for enhancement of understanding of the background of the application and therefore it may comprise prior art that does not constitute known to a person of ordinary skill in the art.

Disclosure of Invention

Aiming at the problems pointed out in the background technology, the invention provides a locking detection method for a cab and a skid, which is suitable for locking detection of the skids of different vehicle types, has stronger universality, improves the detection efficiency and reduces the detection cost.

In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:

the invention provides a cab and skid locking detection method, wherein a skid is locked with the cab and arranged on a roller bed, and the detection method comprises the following steps:

simultaneously lifting different positions of the cab by using a plurality of lifting units;

if the cab is locked with the skid, the skid ascends along with the cab synchronously, and a gap is formed between the skid and the roller bed;

if the cab and the skid are not locked, the skid is still positioned on the roller bed, and no gap exists between the cab and the skid;

detecting gaps between different positions of the skid and the roller bed by using a plurality of detection units;

and the control unit judges the locking state between the skid and the cab according to the feedback data of the detection units.

In some embodiments of the present application, the lifting units have four lifting units, and the lifting units lift the reinforcing beam of the cab;

the detection units are also provided with four detection units which are respectively arranged at four corners of the roller bed.

In some embodiments of the present application, the lifting unit has lifting arms movable in a horizontal direction and a vertical direction, respectively, for lifting the cab, the lifting arms lifting the cab at a stiffening beam.

In some embodiments of the present application, each of the lifting units is provided with a plurality of first proximity sensors at intervals in a vertical direction, and the first proximity sensor at each height position corresponds to a lifting start position of one type of the cab;

when the plurality of lifting arms reach the first proximity sensor at the same height position, the plurality of lifting arms lift the cab simultaneously.

In some embodiments of the present application, before the lift arm lifts the cab, the lift arm is located at a low position, and the lift arm firstly extends into a lower portion of the cab and then moves upward to a height position of the first proximity sensor.

In some embodiments of the present application, each of the lifting units is provided with a second proximity sensor, the second proximity sensor is disposed below the plurality of first proximity sensors, and after the locking detection is completed, the lifting arm needs to be lowered to a height position of the second proximity sensor and then retreated so that the lifting arm moves out of a position below the cab.

In some embodiments of the present application, a horizontal stroke limit switch is disposed on the lifting unit for limiting a horizontal movement range of the lifting arm.

In some embodiments of the present application, a vertical travel limit switch is disposed on the lifting unit for limiting a vertical movement range of the lifting arm.

In some embodiments of the present application, if the control unit receives that the gap data fed back by the detection unit continuously increases and continues for a period of time, it is determined that the skid is locked with the cab;

if the control unit receives that the gap data fed back by the detection unit continuously increases and returns to zero after a period of time, judging that the skid and the cab are not locked;

and if the data fed back by the detection unit received by the control unit is zero, judging that the skid and the cab are not locked.

Compared with the prior art, the invention has the advantages and positive effects that:

according to the skid locking detection method disclosed by the application, different lifting positions of the lifting unit are set according to different types of cabs, so that the locking states of cabs of various types and skids can be detected, and the universality is stronger; during detection, the roller bed does not need to be stopped, the control program of the original production line does not need to be changed, the production efficiency is not influenced in the detection process, and the detection cost is reduced.

Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a sled lock detection apparatus according to an embodiment;

FIG. 2 is a schematic structural diagram of a lifting unit according to an embodiment;

fig. 3 is a cross-sectional view of a lifting unit according to an embodiment.

Reference numerals:

1-a cab;

2-sledge;

3-roller bed;

100-lifting unit, 110-lifting arm, 111-connecting part, 112-first sliding block, 120-upright post, 121-mounting cavity, 122-first sliding rail, 123-second sliding block, 124-supporting part, 130-base, 131-second sliding rail, 140-first driving part, 141-lead screw, 142-nut, 150-second driving part, 160-first proximity sensor, 170-second proximity sensor and 180-vertical stroke limit switch.

200-detection unit.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

The embodiment discloses a cab and skid locking detection system, wherein a cab 1 is locked with a skid 2, the skid 2 is arranged on a roller bed 3, and the locking detection system specifically detects whether the cab 1 is locked with the skid 2.

Referring to fig. 1, the lock detection system mainly includes a lifting unit 100, a detection unit 200, and a control unit (not shown), and only a floor portion of a cab 1 is shown in fig. 1.

The lifting unit 100 is provided in plurality and is disposed at both sides of the roller bed 3, the lifting unit 100 has a lifting arm 110, the lifting arm 110 is used for lifting the cab 1, and the lifting arm 110 can move in the horizontal direction and the vertical direction.

The detection unit 200 is used for detecting the gap between the skid 2 and the roller bed 3 and feeding back the detection data to the control unit.

The control unit controls the lifting unit 100 to move to different positions according to different models of cabs 1 to lift the cab 1, and the control unit judges the locking state between the skid 2 and the cab 1 according to the feedback data of the detection unit 200.

The specific detection method comprises the following steps:

simultaneously lifting different positions of the cab 1 by using a plurality of lifting units 100;

if the cab 1 and the skid 2 are locked, the skid 2 rises synchronously with the cab 1, and a gap is formed between the skid 2 and the roller bed 3;

if the cab 1 and the skid 2 are not locked, the skid 2 is still positioned on the roller bed 3, and no gap exists between the cab 1 and the skid 2;

detecting gaps between different positions of the skid 2 and the roller bed 3 by using a plurality of detection units 200, and feeding back detection data to the control unit by using the detection units 200;

the control unit judges the locking state between the skid 2 and the cab 1 according to the feedback data of the detection units 200, if the cab 1 and the skid 2 are in the locking state, the skid 2 can synchronously rise along with the cab 1, the skid 2 is separated from the roller bed 3, a gap is formed between the skid 2 and the roller bed 3 at the moment, the detection units 200 detect the gap data and feed back the gap data to the control unit, and the control unit judges that the cab 1 and the skid 2 are locked; if the cab 1 and the skid 2 are not locked, the skid 2 is not moved and continues to be positioned on the roller bed 3, the detection unit 200 detects that no gap exists between the skid 2 and the roller bed 3 and feeds the gap back to the control unit, and the control unit judges that the cab 1 and the skid 2 are not locked.

In this embodiment, a more specific and reliable determination method is provided, and if the control unit receives that the gap data fed back by the detection unit 200 is continuously increased and continues for a period of time, it is determined that the skid 2 is locked with the cab 1;

if the control unit receives that the gap data fed back by the detection unit 200 is continuously increased but returns to zero after a period of time, the situation may be that the locking between the cab 1 and the skid 2 is not firm, and the skid 2 is separated from the cab 1 in the lifting process;

if the data received by the control unit and fed back by the detection unit 200 is zero, it is determined that the skid 2 and the cab are not locked by 1.

The lifting arm 110 moves in the horizontal direction, so that the lifting arm 110 horizontally extends into/out of the lower part of the cab 1, and the lifting arm 110 moves in the vertical direction, so that the lifting and descending actions of the lifting arm 110 on the cab 1 are realized.

Different lifting positions of the lifting arm 110 are set according to different types of cabs 1, so that the locking states of cabs 1 and skids 2 of various types can be detected, and the universality is stronger; during detection, the roller bed 3 does not need to be stopped, the control program of the original production line does not need to be changed, the production efficiency is not influenced in the detection process, and the detection cost is reduced.

In some embodiments of the present application, the detecting unit 200 may be a photoelectric sensor disposed on the roller bed 3.

In some embodiments of the present application, four lifting units 110 and four detecting units 200 are respectively disposed, four lifting units 100 are respectively disposed on two sides of the roller bed 3 to synchronously lift four positions of the cab 1, and four detecting units 200 are respectively disposed at four corners of the roller bed 3.

In some embodiments of the present application, the lifting arm 110 is embodied as a stiffening beam of the lift cab 1 to ensure that the shape of the freshly machined vehicle body is not damaged during the lifting process.

Regarding the specific structure of the lifting unit 100, in some embodiments of the present application, referring to fig. 2 and 3, the lifting unit 100 further includes a base 130, a vertical column 120 is slidably disposed on the base 130 along a horizontal direction, and a lifting arm 110 is slidably disposed on the vertical column 120 along a vertical direction.

The horizontal direction displacement of the lifting arm 110 is achieved by the horizontal sliding of the upright 120 along the base 130.

The horizontal movement of the column 120 and the vertical movement of the lifting arm 110 are driven by two sets of independent driving units, which are independently controlled.

Specifically, for the driving structure of the lifting arm 110 moving vertically along the upright column 120, in some embodiments of the present application, a mounting cavity 121 is formed in the upright column 120, a first driving part 140, specifically a servo motor, is disposed at the top of the upright column 120, a power output end of the first driving part 140 is provided with a lead screw 141, the lead screw 141 is located in the mounting cavity 121, and the lead screw 141 is fixedly connected to one end of the lifting arm 110 through a nut 142. The up and down movement of the lifting arm 110 is realized by the action of the screw 141.

Furthermore, one end of the lifting arm 110 is provided with a connecting portion 111, the connecting portion 111 is an L-shaped plate structure, the connecting portion 111 is fixedly connected with the nut 142, two opposite side walls of the left and right sides of the upright post 120 are respectively provided with a first slide rail 122, the connecting portion 111 is provided with a first slider 112, and the first slider 112 is slidably disposed on the first slide rail 122.

The screw 141 moves to drive the connecting portion 111 to move up and down through the nut 142, at this time, the first slider 112 moves along the first slide rail 122, and another function of the cooperation between the first slider 112 and the first slide rail 122 is to provide a large enough torque resistance for the lifting arm 110, so as to meet the lifting moment requirement of the cab 1.

The first slider 112 may be provided in plurality to further enhance structural reliability.

Furthermore, a supporting part 124 is arranged in the mounting cavity 121, and the lower end of the screw rod 141 is rotatably connected with the supporting part 124 through a bearing, so that the structural reliability of the screw rod 141 is improved.

For the driving structure of the vertical column 120 moving horizontally along the base 130, in some embodiments of the present application, the base 130 is provided with a second driving portion 160, specifically an air cylinder, a power output end of the second driving portion 160 is fixedly connected to the bottom of the vertical column 130, the base 130 is provided with a second slide rail 131, the bottom of the vertical column 120 is provided with a second slide block 123, and the second slide block 123 is slidably disposed on the second slide rail 131.

The lifting unit 100 is further provided with a plurality of sensors to perform more precise and automatic control of the lifting action, specifically, in some embodiments of the present application, the upright column 120 is provided with a plurality of proximity sensors (denoted as first proximity sensors 160) at intervals along the height direction thereof, and the first proximity sensor 160 at each height position corresponds to the lifting start position of one type of cab 1.

When the plurality of lifting arms 110 all reach the first proximity sensor 160 at the same height position, the plurality of lifting arms 110 lift the cab 1 at the same time, so as to realize synchronous horizontal lifting of the cab 1.

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

The lifting unit 100 shown in fig. 2 is provided with three first proximity sensors 160, and the lifting unit 100 can meet the detection of three different types of cabs 1.

In some embodiments, each of the lifting units 100 has a second proximity sensor 170 on the column 120, the second proximity sensor 170 is disposed below the plurality of first proximity sensors 160, and after the locking detection is finished, the lifting arm 110 needs to be lowered to the height position of the second proximity sensor 170 and then retracted to move the lifting arm 110 out of the lower portion of the cab 1.

When the lifting arm 110 reaches the height position at which the second proximity sensor 170 is located, the lifting arm 110 is located at a safe position that allows the cab 1 to be released.

In some embodiments of the present application, vertical travel limit switches 180 are respectively disposed at positions of the upright column 120 near upper and lower ends thereof, and are used for limiting a movement range of the lifting arm 110 along a vertical direction.

Horizontal travel limit switches (not shown) are respectively disposed on the base 130 near the left and right ends thereof for limiting the range of motion of the column 120 in the horizontal direction.

In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (9)

1. A cab and skid locking detection method is provided, the skid is locked with the cab and is arranged on a roller bed, and the detection method is characterized by comprising the following steps:

simultaneously lifting different positions of the cab by using a plurality of lifting units;

if the cab is locked with the skid, the skid ascends along with the cab synchronously, and a gap is formed between the skid and the roller bed;

if the cab and the skid are not locked, the skid is still positioned on the roller bed, and no gap exists between the cab and the skid;

detecting gaps between different positions of the skid and the roller bed by using a plurality of detection units;

and the control unit judges the locking state between the skid and the cab according to the feedback data of the detection units.

2. The cab and skid locking detection method of claim 1,

the lifting units are four in number and lift the stiffening beams of the cab;

the detection units are also provided with four detection units which are respectively arranged at four corners of the roller bed.

3. The cab and skid locking detection method of claim 1,

the lifting unit is provided with lifting arms which can move along the horizontal direction and the vertical direction respectively and are used for lifting the cab, and the lifting arms lift the stiffening beam of the cab.

4. The cab and skid locking detection method of claim 3,

a plurality of first proximity sensors are arranged on each lifting unit at intervals in the vertical direction, and the first proximity sensor at each height position corresponds to the lifting starting position of the cab with one type;

when the plurality of lifting arms reach the first proximity sensor at the same height position, the plurality of lifting arms lift the cab simultaneously.

5. The cab and skid locking detection method of claim 4,

before the lifting arm lifts the cab, the lifting arm is located at a low position, extends into the lower part of the cab firstly, and then moves upwards to the height position of the first proximity sensor.

6. The cab and skid locking detection method of claim 3,

each lifting unit is provided with a second proximity sensor, the second proximity sensors are arranged below the plurality of first proximity sensors, and after locking detection is finished, the lifting arm needs to descend to the height position of the second proximity sensors and then retreat so as to move out of the lower portion of the cab.

7. The cab and skid locking detection method according to any one of claims 3 to 6,

and a horizontal stroke limiting switch is arranged on the lifting unit and used for limiting the horizontal movement range of the lifting arm.

8. The cab and skid locking detection method according to any one of claims 3 to 6,

and the lifting unit is provided with a vertical travel limit switch for limiting the vertical movement range of the lifting arm.

9. The cab and skid locking detection method of claim 1,

if the control unit receives that the gap data fed back by the detection unit continuously increases and lasts for a period of time, the control unit judges that the skid is locked with the cab;

if the control unit receives that the gap data fed back by the detection unit continuously increases and returns to zero after a period of time, judging that the skid and the cab are not locked;

and if the data fed back by the detection unit received by the control unit is zero, judging that the skid and the cab are not locked.

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