CN220524902U

CN220524902U - Detection device for skid deformation

Info

Publication number: CN220524902U
Application number: CN202321726688.2U
Authority: CN
Inventors: 刘晓龙; 孟相生
Original assignee: Baic Lidai Industrial Technology Service Beijing Co ltd
Current assignee: Baic Lidai Industrial Technology Service Beijing Co ltd
Priority date: 2023-07-03
Filing date: 2023-07-03
Publication date: 2024-02-23
Anticipated expiration: 2033-07-03

Abstract

The utility model relates to the field of mechanized conveying systems, in particular to a detection device for skid deformation. The detection device comprises a controller, a programmer, a slave station, a proximity switch, a photoelectric switch and a motor. The detection device realizes the automatic detection of whether deformation exists in a large batch of skids, thereby reducing the time cost; the unqualified products detected by the device are further treated, so that a great amount of manpower is prevented from conducting nonsensical skid repair; meanwhile, no personnel directly operate in the detection process, and the risk of personnel injury is avoided.

Description

Detection device for skid deformation

Technical Field

The utility model relates to the field of mechanized conveying systems, in particular to a detection device for skid deformation.

Background

Currently, in an automobile paint shop, a skid is used as a transmission medium to transport a vehicle body to various stations. After long-time use, the skid can deform itself. The deformation specific parts are concentrated at the front end and the rear end of the skid longitudinal beam, and the two ends of the skid longitudinal beam are tilted upwards to different degrees. The proximity switch for measurement may be misjudged to be large due to the deformation of the sled. Therefore, the skid can be stopped after lagging, and the vehicle body is scrapped due to inaccurate paint spraying and positioning of the vehicle body caused by the position change of the skid.

The automobile paint shop uses equipment such as a double-strand chain, a roller machine and the like as conveying equipment to convey a vehicle body, and a skid is used as an intermediate medium. The traversing mechanism mainly comprises a driving motor, a reduction gearbox and a tank chain. When a skid carrying a vehicle body walks on a double-strand chain, the front end and the rear end of a longitudinal beam of the skid are used as supporting points to be contacted with a tank chain; the load body is positioned in the middle of the skid, so that the condition of high middle and low sides can occur for a long time.

The rolling machine comprises a driving motor, a belt and a rolling shaft. The stop position of the skids on the roller bed is determined by a proximity switch mounted on the surface of the roller bed. The proximity switch senses the bottom of the sled. The stop position proximity switch and the deceleration position proximity switch act together. When the front end of the skid is tilted, the stop position proximity switch is sensed in a lagging way, so that deviation of the stop position of the skid is caused.

The currently used method periodically measures the size of all skids, and the deformed skids are re-online after being adjusted. The measurement is laborious and laborious, since hundreds of skids are used in the field. And the measurement period is longer, and the problem skid can not be effectively found in time. And many people many time slots measure, the misdetection appears, and the condition of missing the survey is more.

Disclosure of Invention

The present utility model has been made in view of the above problems.

A detection device for skid deformation, the detection device comprises a controller, a programmer, a slave station, a proximity switch, a photoelectric switch and a motor; the proximity switch and the photoelectric switch are connected to the slave station through cables, the slave station is connected with the controller through a bus, the programmer is used for editing a control program of the controller, and the motor is connected with the controller through a frequency converter; the controller sends an instruction to the frequency converter to adjust the frequency so as to control the motor; the photoelectric switch comprises a height detection switch and a position detection switch, and the proximity switch comprises a speed reduction switch and a stop switch; a speed reducing switch and a stop switch are sequentially arranged along the conveying direction of the skid.

Further, the slave station is a distributed IO ET200S; the controller is a PLC.

Further, the photoelectric switch is a diffuse reflection type sensor, the detection device further comprises a photoelectric switch bracket, and the height detection switch is arranged on the photoelectric switch bracket; the position detection switch is perpendicular to the travelling direction of the roller way.

Further, the position detection switch is connected with an alarm, and the height detection switch is used for monitoring the deformation upturned height of the front end of the skid; the position detection switch is used for sending out an alarm when the skid walks in place.

Still further, the rays of the height detection switch are arranged in parallel with the roller way conveying surface along the axis direction of the roller way roller; the position detection switch rays are arranged vertically upwards.

The detection device comprises two groups of photoelectric switches, and a position switch, a height detection switch, a stop switch, a speed reduction switch, a second height detection switch and a second position detection switch are sequentially arranged along the reverse direction of the skid.

The detection device realizes the automatic detection of whether deformation exists in a large batch of skids, thereby reducing the time cost; the unqualified products detected by the device are further treated, so that a great amount of manpower is prevented from conducting nonsensical skid repair; meanwhile, no personnel directly operate in the detection process, and the risk of personnel injury is avoided.

Drawings

FIG. 1 is a schematic diagram of an electrical control section;

FIG. 2 is a perspective view of a height sensing switch and a photoelectric switch bracket;

FIG. 3 is a front view of the height sensing switch and the photoelectric switch bracket;

FIG. 4 is a front view of the detection device photoelectric switch and the carriage sled;

FIG. 5 is an enlarged partial schematic view of the area A in FIG. 4;

FIG. 6 is a layout of a detection device;

a controller 1, a programmer 2, a slave station 3, a proximity switch 4, a stop switch 41, a speed reduction switch 42, a photoelectric switch 5, a height detection switch 51, a position detection switch 52, a second height detection switch 53, and a second position detection switch 54.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1

The embodiment discloses a detection device for skid deformation, which comprises a controller 1, a programmer 2, a slave station 3, a proximity switch 4, a photoelectric switch 5 and a motor; referring to fig. 1, a proximity switch 4 and a photoelectric switch 5 are connected to a slave station 3 through cables, the slave station 3 is connected to a controller 1 through a bus, a programmer 2 is used for editing a control program of the controller 1, and a motor is connected with the controller 1 through a set frequency converter; the controller 1 sends instructions to the frequency converter to adjust the frequency so as to realize the control of the motor; the photoelectric switch 5 includes a height detection switch 51 and a position detection switch 52, and the proximity switch 4 includes a speed reduction switch 42 and a stop switch 41; a deceleration switch 42 and a stop switch 41 are provided in this order along the skid conveying direction. The slave station 3 is a distributed IO ET200S; the controller is a PLC. The photoelectric switch 5 is a diffuse reflection type sensor, the detection device further comprises a photoelectric switch bracket, and the height detection switch 51 is arranged on the photoelectric switch bracket; the position detection switch 52 is perpendicular to the roller way travelling direction.

The position detection switch 52 is connected with an alarm, and the height detection switch 51 is used for monitoring the deformation upturned height of the front end of the skid; the position detection switch is used for alarming when the skid walks in place.

The rays of the height detection switch 51 are arranged in parallel with the roller conveying surface along the axis direction of the roller; the position detection switch 52 is disposed vertically upward in radiation.

The detection system for detecting whether the skid is deformed by using the photoelectric switch specifically comprises a Siemens PLC, a programmer PG/PC, a distributed IOET200S, a proximity switch and the photoelectric switch. The specific implementation method is that Siemens PLC S7-1500 is adopted as a controller, and the proximity switch and the photoelectric switch are connected to ET200S through standard cables. The ET200S serves as a slave station and is connected to the controller via a Profinet bus cable, so that the status of the proximity switch and the optoelectronic switch can be fed back to the controller PLC via the distributed IO ET200S. And programming a PLC control program on the PG/PC, sending an instruction to a frequency converter by a CPU of the Siemens PLC, controlling a motor by the frequency converter through adjusting the frequency, and controlling the position of the skid through the rotation and the stop of the motor. The skid is decelerated and stopped through two proximity switches. The front end and rear end position detection of the sled is achieved using two photoelectric switches.

The detection device comprises two groups of photoelectric switches, namely a position switch 52, a height detection switch 51, a stop switch 41, a speed reduction switch 42, a second height detection switch 53 and a second position detection switch 54 in turn along the reverse direction of the skid.

1. Under normal conditions, the speed of the skid is reduced after sensing the speed reduction switch, and then the skid stops running after sensing the stop position switch. At this time, the position detection switch 52, the second position detection switch 54, the height detection switch 51, and the second height detection switch 53 are not triggered.

2. When the skid is deformed (the front end is tilted upwards), the stop position switch is sensed later (because the switch is arranged at the bottom of the skid), and the height detection switch 51 and the position detection switch 52 are triggered.

3. When the sled is deformed (front end collapses down), the stop switch 41 is activated in advance (because the switch is mounted at the bottom of the sled) and the height detection switch is not activated, but the second position detection switch 54 is activated (stopped early).

4. When the sled is deformed (the rear end is tilted upward), the height detection switch 51 is triggered, but the other three switches are not triggered (because the rear end does not trigger the stop position switch, the stop position is not affected).

5. When the sled is deformed (the rear end collapses downward), none of the four switches will activate at this time, as the rear end does not activate the stop switch 41, which does not affect the stop position, see fig. 6.

Referring to fig. 4 and 5, a sled height detection switch 51 and a position detection switch 52 are respectively installed at the front end of the sled, the height detection switch 51 is slightly higher than the front end of the sled, and when the front end of the sled is tilted by more than 50mm, the photoelectric switch is shielded, so that a PLC alarm is triggered; the position detection switch is arranged at the front end of the skid, when the skid is in a walking over-position condition because the front end is tilted upwards and the hysteresis induction proximity switch 4 is in a hysteresis induction state, the photoelectric switch 5 is shielded if the over-position distance exceeds 20mm, and then an alarm is triggered. As long as one of the height detection switch and the position detection switch is blocked, it is indicated that the sled has been deformed and needs to be corrected. The dimensions recited herein are for illustration only and are not limiting.

The photoelectric switch used in this example is a diffuse reflection type photoelectric sensor, the sensing distance is 30 to 200 mm, when the photoelectric switch senses an object (in this example, a skid), a high level is output to the distributed IO ET200S input module, and the input module gives a signal '1' to the CPU of the Siemens PLC, and in this example, an 'L' -shaped wiring mode is adopted.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the technical solutions according to the embodiments of the present utility model.

Claims

1. A detection device for skid deformation, which is characterized by comprising a controller, a programmer, a slave station, a proximity switch, a photoelectric switch and a motor; the proximity switch and the photoelectric switch are connected to the slave station through cables, the slave station is connected with the controller through a bus, the programmer is used for editing a control program of the controller, and the motor is connected with the controller through a frequency converter; the controller sends an instruction to the frequency converter to adjust the frequency so as to control the motor; the photoelectric switch comprises a height detection switch and a position detection switch, and the proximity switch comprises a speed reduction switch and a stop switch; a speed reducing switch and a stop switch are sequentially arranged along the conveying direction of the skid.

2. The skid deformation detection apparatus according to claim 1, wherein the slave station is a distributed IO ET200S; the controller is a PLC.

3. The skid deformation detection device according to claim 1, wherein the photoelectric switch is a diffuse reflection sensor, the detection device further comprises a photoelectric switch bracket, and the height detection switch is arranged on the photoelectric switch bracket; the position detection switch is perpendicular to the travelling direction of the roller way.

4. The detection device for skid deformation according to claim 3, wherein the position detection switch is connected with an alarm, and the height detection switch is used for monitoring the deformation upturned height of the front end of the skid; the position detection switch is used for sending out an alarm when the skid walks in place.

5. The skid deformation detection device according to claim 4, wherein the rays of the height detection switch are arranged in parallel with the roller conveying surface along the roller axis direction of the roller; the position detection switch rays are arranged vertically upwards.

6. The apparatus according to claim 5, wherein the detecting means comprises two sets of the photoelectric switches, a position switch, a height detecting switch, a stop switch, a speed reducing switch, a second height detecting switch, and a second position detecting switch in this order along the reverse direction of the sled.