CN212006995U - Detection device and vehicle combination system with same - Google Patents

Abstract

The embodiment of the application provides a detection device and a vehicle combination system with the same. This detection device is used for detecting whether the height that the pole of screwing up on the vehicle tray of assembling together stretches out vehicle tray downwards is less than specified height, and detection device includes: mounting a bracket; the alarm switch is arranged on the mounting bracket; and the detection plate is rotatably arranged on the mounting bracket through a mounting pin, and the height of the upper surface of the detection plate corresponds to the specified height, so that when the height of the tightening rod is lower than the specified height, the tightening rod is contacted with the detection plate at the initial position and pushes the detection plate to rotate to the triggering position for triggering the alarm switch, and the alarm switch sends out an alarm signal. The detection device has higher reliability and can reduce or avoid false detection.

Description

Detection device and vehicle combination system with same

Technical Field

The embodiment of the application relates to the field of vehicle production equipment, in particular to a detection device and a vehicle combination system with the same.

Background

In a vehicle-many assembly line, vehicle-many trays are placed on a conveyor line to be moved between different stations by the conveyor line. The vehicle attaches together the tray and is used for bearing the chassis of vehicle and spare part on the chassis, in addition, the vehicle attaches together still to be provided with on the tray and is used for revolving the tightening rod of twisting bolt etc. and the tightening rod stretches out certain height downwards from the tray. However, if the spring in the tightening rod is loosened or fails during the vehicle-attaching process, the height at which the tightening rod protrudes downward from the tray increases, so that the tightening rod collides with equipment under the chassis, such as unhooking/unhooking equipment, during the movement of the tightening rod with the vehicle-attaching tray. This can cause damage to the equipment and result in long production line stops. In order to avoid this problem, it is necessary to detect whether the height of the tightening rod is lower than a prescribed height. The height of the lower end of the tightening rod is detected through the laser ranging sensor in the prior art so as to detect the tightening rod with too low height, but the problem that the false detection rate is high due to the fact that environmental interference is easy to cause when the laser ranging sensor is used for detection is solved.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problem, embodiments of the present application provide a detection device and a vehicle on-board system having the same, so as to at least partially solve the above problem.

According to a first aspect of embodiments of the present application, there is provided a detecting device for detecting whether a height at which a tightening lever on a vehicle-on-fit tray protrudes downward out of the vehicle-on-fit tray is lower than a prescribed height, the detecting device including: mounting a bracket; the alarm switch is arranged on the mounting bracket; and the detection plate is rotatably arranged on the mounting bracket through a mounting pin, and the height of the upper surface of the detection plate corresponds to the specified height, so that when the height of the tightening rod is lower than the specified height, the tightening rod is contacted with the detection plate at the initial position and pushes the detection plate to rotate to the triggering position for triggering the alarm switch, and the alarm switch sends out an alarm signal.

Optionally, the alarm switch is a touch-type inductive switch, and is located on a first side of the detection board, and contacts the alarm switch when the detection board rotates to the triggering position, so as to trigger the alarm switch.

Optionally, the detection device further comprises a check member disposed on the mounting bracket and maintaining the detection plate in a trigger position in contact with the alarm switch when the detection plate is rotated to the trigger position.

Optionally, the detection plate has a first side surface for contacting the alarm switch and a second side surface opposite to the first side surface, the detection device further comprises a base and an elastic member, the base is fixedly arranged on the mounting bracket, the check member is arranged on the base, the elastic member is arranged between the check member and the base, the check member has a wedge-shaped portion protruding out of the upper surface of the base, and when the detection plate rotates to the trigger position, the wedge-shaped portion contacts with the second side surface of the detection plate to prevent the detection plate from being separated from the alarm switch.

Optionally, when the detection plate is at the initial position, the base is located below the detection plate, an avoiding hole is formed in the detection plate, and at least part of the wedge-shaped portion can extend into the avoiding hole.

Optionally, a first groove is formed in the detection plate, and the detection device further comprises a limiting plunger, the limiting plunger is arranged on the mounting bracket, and at least part of the limiting plunger is located in the first groove to limit shaking of the detection plate when the detection plate is at the initial position.

Optionally, the surface of the first groove is a spherical surface, and the part of the limiting plunger extending into the first groove is spherical or hemispherical.

Optionally, the rotation angle of the detection plate corresponding to the triggering position relative to the initial position is 30 °, and when the rotation angle of the detection plate relative to the initial position is in the range of 30 ° to 40 °, the detection plate is kept in contact with the alarm switch.

Optionally, the detection device further comprises a positioning pin, the positioning pin is fixedly arranged on the mounting bracket, and the positioning pin and the alarm switch are located on the same side of the detection plate to limit the maximum rotatable angle of the detection plate.

Alternatively, the detection plate may have a protruding portion that is capable of coming into contact with any one of the plurality of tightening rods on the vehicle-incorporating tray that is lower than a prescribed height when the detection plate is at the initial position.

Optionally, the detection plate has a projection facing the alarm switch, the projection being for triggering the alarm switch.

According to another aspect of the present application, there is provided a vehicle-attaching system including a conveying line, a vehicle-attaching tray provided on the conveying line and movable along the conveying line, and a detecting device provided on the vehicle-attaching tray, the detecting device being the above-described detecting device, the detecting device being provided on the conveying line to detect whether a height of the tightening rod is lower than a prescribed height.

According to the detection device provided by the embodiment of the application, the mounting bracket is used for providing a mounting position for the alarm switch and the contact detection plate which is hereinafter referred to as the detection plate. The pick-up plate passes through the mounting pin and rotationally sets up on installing support, and the height of the upper surface of pick-up plate is the height of regulation, like this when screwing up the pole and passing through the pick-up plate in the motion process, if the height H of screwing up the pole is less than the height of regulation, will contact with the pick-up plate to promote the pick-up plate to rotate to the trigger position, thereby trigger alarm switch, in order to send alarm signal, inform that the height H of staff this screwing up pole is low excessively. Whether the height H of the tightening rod is too low is detected by adopting the contact mode, so that the problem that false detection or missing detection is caused due to the fact that non-contact modes such as a laser ranging sensor are easy to interfere by the environment in the prior art is solved, and the detection reliability is improved.

Drawings

The drawings are only for purposes of illustrating and explaining the present application and are not to be construed as limiting the scope of the present application. Wherein the content of the first and second substances,

fig. 1 is a schematic perspective view of a first detection device according to an embodiment of the present application;

fig. 2 is a schematic perspective view of a second detecting device according to an embodiment of the present application;

fig. 3 is a schematic perspective view of a second detection device of the present application with a detection plate removed;

FIG. 4 is a schematic view of a detection plate of a second detection device of an embodiment of the present application at different rotation angles;

fig. 5 is a schematic perspective view of a detection plate of a second detection device according to an embodiment of the present application;

FIG. 6 is a perspective view of a check member and a base of a second detection device according to an embodiment of the present disclosure;

fig. 7 is a schematic perspective view of a conveyor line with a detection device mounted therein in the vehicle-in-package system according to the embodiment of the present application;

fig. 8 is a partially enlarged view of a vehicle on-board system at a detection device according to an embodiment of the present application.

List of reference numerals:

10: mounting a bracket;

11: a cross bar;

13: a vertical rod;

15: a reinforcing bar;

17: mounting a plate;

20: an alarm switch;

30. 30': detecting a plate;

31: avoiding holes;

32: a first groove;

33: a first side surface;

35: a second side surface;

50: mounting a pin;

70: positioning pins;

60: a limiting plunger;

21: a trigger;

41: a check member;

42: a base;

331: an extension portion;

332: a protruding portion;

311: a hole wall;

411: a wedge-shaped portion;

421: a second groove;

100: screwing the rod;

200: a conveying line;

300: the vehicle attaches together the tray.

Detailed Description

In order to more clearly understand the technical features, objects and effects of the embodiments of the present application, specific embodiments of the present application will be described with reference to the accompanying drawings.

Referring to fig. 1, according to an embodiment of the present application, there is provided a detecting device for detecting whether a height H at which a tightening rod 100 on a vehicle-attaching tray 300 protrudes downward out of the vehicle-attaching tray 300 is lower than a prescribed height, the detecting device including a mounting bracket 10, an alarm switch 20, and a detecting plate 30, the alarm switch 20 being provided on the mounting bracket 10; the sensing plate 30 is rotatably provided on the mounting bracket 10 by the mounting pin 50, and the upper surface of the sensing plate 30 has a height corresponding to a prescribed height, so that when the height H of the tightening lever 100 is lower than the prescribed height, the tightening lever 100 contacts the sensing plate 30 at an initial position and pushes the sensing plate 30 to rotate to a trigger position for triggering the alarm switch 20, causing the alarm switch 20 to give an alarm signal.

In this embodiment, mounting bracket 10 is used to provide a mounting location for alarm switch 20 and detection board 30. The sensing plate 30 is rotatably provided on the mounting bracket 10 by the mounting pin 50, and the height of the upper surface of the sensing plate 30 corresponds to a prescribed height, so that when the tightening lever 100 passes the sensing plate 30 during movement, if the height H of the tightening lever 100 is lower than the prescribed height, it contacts the sensing plate 30, thereby pushing the sensing plate 30 to rotate to a trigger position, thereby triggering the alarm switch 20 to give an alarm signal to inform a worker that the height H of the tightening lever 100 is too low. Because whether the height H of the tightening rod 100 is too low is detected by adopting the contact mode, the problem that false detection or missing detection is caused due to the fact that non-contact modes such as a laser ranging sensor in the prior art are easily interfered by the environment is solved, and the detection reliability is improved.

The detection device of the embodiment can be used for carrying out online detection in the production process (such as the process of combining the vehicles) without extra time spent by workers, and the height of each screwing rod is specially detected in the overhaul region, so that the labor cost is reduced. Moreover, compared with a laser ranging sensor, the detection device of the embodiment has the advantages of lower price, better economy and capability of reducing the production cost.

It should be noted that the aforementioned specified height can be determined according to the need, for example, in a usage scenario of the present embodiment, the specified height can be the height of the unhooking/unhooking device. In other usage scenarios, the predetermined height may be other heights, for example, the predetermined height may be a certain value below the height of the unhooking/unhooking device, and the present embodiment is not limited thereto. The height of the upper surface of the detection plate 30 corresponding to the prescribed height may be understood as being coincident with the prescribed height, or the difference from the prescribed height is less than or equal to a set value, which may be determined as needed. The height H of the tightening rod 100 may be a height between the lower end of the tightening rod 100 and a mounting surface of an avoidance object (such as an unhooking/unhooking device in the present embodiment). For example, the unhooking/unhooking apparatus is mounted on the ground, and the height H is a height from the ground to the lower end of the tightening rod 100.

The structure and operation of the detecting device for mechanical contact type online automatic detection of the embodiment are described in detail as follows:

as shown in fig. 2 to 4, the mounting bracket 10 of the inspection device is mounted on the conveyor line 200 for the inspection vehicle-mounted pallet 300, which helps to locate the distance between the inspection plate 30 and the conveyor line 200, so that the contact position of the tightening rod 100 with the inspection plate 30 can be more conveniently adjusted to allow the inspection plate 30 to be adapted to the inspection of different tightening rods 100.

Of course, in other embodiments, the mounting bracket 10 may be secured to other fixtures, such as floors, walls, etc.

In one illustrated embodiment, the mounting bracket 10 includes a cross bar 11, a vertical bar 13, a reinforcing bar 15, and a mounting plate 17. Wherein the cross bar is arranged horizontally and extends in the conveying direction of the vertical conveying line 200. A first end of the cross bar 11 is mounted on the conveyor line 200 and a vertical bar 13 is connected to a second end of the cross bar 11. A reinforcing rod 15 is connected between the cross bar 11 and the vertical bar 13 to improve the structural strength of the mounting bracket 10. A mounting plate 17 is fixed to the top end of the vertical rod 13, and a detection plate 30 may be provided on the mounting plate 17.

In other embodiments, the mounting bracket 10 may be any other suitable structure, such as a T-bar, a rectangular block, etc., and the present embodiment is not limited thereto.

In this embodiment, the sensing device further includes a mounting pin 50, and the sensing plate 30 is rotatably disposed on the mounting bracket 10 by the mounting pin 50. For example, the mounting pin 50 extends vertically, and the detection plate 30 is rotatably provided on the mounting plate by the mounting pin 50 so that the detection plate 30 can rotate in a horizontal plane when the tightening lever 100 touches the detection plate 30. This way not only can make the detection plate 30 rotate smoothly, but also has simple structure and low cost.

Of course, in other embodiments, sensing plate 30 may be mounted to mounting bracket 10 in other ways (e.g., via a rotating shaft and bearings) so long as it is ensured that sensing plate 30 can be rotated by tightening rod 100.

Optionally, in order to avoid that the detection plate 30 is too loose and is likely to rotate due to the influence of vibration and the like to cause false detection, the detection plate 30 is provided with a first groove 32, the detection device further comprises a limiting plunger 60, the limiting plunger 60 is arranged on the mounting bracket 10, and at least a part of the limiting plunger 60 is located in the first groove 32 to limit the shaking of the detection plate 30 when the detection plate is at the initial position.

As shown in fig. 5, the first recess 32 is provided on the side of the detection plate 30 facing the mounting plate 17 of the mounting bracket 10, the stopper plunger 60 is provided on the mounting plate, and with sensing plate 30 in the initial position, a portion of stop plunger 60 is positioned within first recess 32, thus, the detection plate 30 can be maintained at an initial position due to the stopping action of the stopper plunger 60 and the first groove 32, and cannot rotate due to the influence of vibration and the like, and the detection plate 30 can be pushed to rotate only when the force touching the detection plate 30 exceeds a certain value, thereby ensuring that, when tightening the lever 100 into contact with the sensing plate 30, the sensing plate 30 is pushed to rotate, fig. 4 is a schematic diagram showing different states of the detection plate 30 after the detection plate 30 is in an initial position (the position of the detection plate 30 in fig. 4) and pushed and rotated to a certain rotation angle (the position of the detection plate 30' in fig. 4).

Alternatively, in order to ensure that the force for urging the detection plate 30 to rotate is appropriate, the surface of the first recess 32 is spherical, and the portion of the stopper plunger 60 that protrudes into the first recess 32 is spherical or hemispherical. Therefore, when the detection plate 30 is separated from the initial position, the process that the limiting plunger 60 is separated from the first groove 32 is smooth, and the detection plate 30 cannot be damaged.

Alternatively, in order to be able to minimize the space occupation and the production cost while ensuring that the detection of the height H of the tightening rods 100 can be achieved, the detection plate 30 has a protruding portion 331, and when the detection plate 30 is in the initial position, the protruding portion 331 is able to contact the tightening rods 100 having any one of the plurality of tightening rods 100 on the vehicle-mounted tray 300 whose height is lower than a prescribed height. Thus, when a plurality of tightening rods 100 are provided on the vehicle-attaching tray 300) (for example, when the number of tightening rods 100 on one side of the vehicle-attaching tray 300 is 5), the length of the protruding portion 331 can ensure that any one of the tightening rods 100 is in contact with the protruding portion 331 when the height is lower than a predetermined height (for example, along the conveying direction of the conveying line 200 (the direction indicated by the arrow in fig. 8), the projection of each tightening rod 100 falls on the protruding portion 331), so that the detection plate 30 is pushed to rotate, and thus, the transmission can be performed through the detection plate 30, and the plurality of tightening rods 100 on one side of the vehicle-attaching tray 300 can be detected only through one alarm switch 20, thereby reducing the cost, and avoiding a plurality of problems such as an excessive cost, complicated installation and positioning, and occupied space due to the need of a corresponding alarm switch for each tightening rod.

Optionally, in one embodiment, sensing plate 30 has a raised portion 332 facing alarm switch 20, and raised portion 332 is used to activate alarm switch 20, so that the length of the sensing plate can be reduced, thereby reducing the size of the sensing device.

Optionally, in order to reduce the detection cost and improve the detection accuracy, the alarm switch 20 in this embodiment may be a touch-type inductive switch. Specifically, the alarm switch 20 is located on a first side of the detection plate 30, and the alarm switch 20 includes a trigger member 21, and the detection plate 30 contacts the trigger member 21 when rotated to the trigger position to trigger the alarm switch 20.

As shown in fig. 1, the alarm switch 20 may be a mechanical switch fixedly disposed on the vertical rod 13 of the mounting bracket 10. The trigger member 21 of the mechanical switch is rotatable, so that when the detection plate 30 contacts the trigger member 21, it will be driven to rotate, and the mechanical switch will convert the rotation of the trigger member 21 into an electrical signal (i.e. an alarm signal) for output.

Of course, in other embodiments, the alarm switch 20 may also be a non-contact triggered alarm switch 20, for example, the alarm switch 20 is a photoelectric switch, and when the detection plate 30 rotates to the triggered position, the photoelectric switch is shielded, so that the photoelectric switch cannot detect the light emitted by the light source, thereby outputting an electrical signal (i.e., an alarm signal). Alternatively, the alarm switch 20 may be any other suitable switch, and the embodiment is not limited thereto.

Optionally, since in the present embodiment, the alarm switch 20 is triggered in a contact manner, so that the detection plate 30 may be subjected to a reverse force applied by the alarm switch 20 when contacting the alarm switch 20, and the detection plate 30 may rotate in a reverse direction to be separated from the alarm switch 20, and thus the alarm signal cannot be continuously sent out, in order to avoid this problem, the detection device further includes a check member 41, and the check member 41 is disposed on the mounting bracket 10 and contacts the detection plate 30 to maintain the detection plate 30 at a triggering position contacting the alarm switch 20 when the detection plate 30 rotates to the triggering position.

Therefore, the check piece 41 can prevent the detection plate 30 from being separated from the alarm switch 20, so that a continuous alarm signal can be sent out, and the omission of alarm of a worker is avoided.

As shown in fig. 6, optionally, in order to facilitate the installation and positioning of the check member 41, the detecting device further includes a base 42 and an elastic member, the base 42 is fixedly provided on the mounting bracket 10, the check member 41 is provided on the base 42, the elastic member is provided between the check member 41 and the base 42, the check member 41 has a wedge portion 411 protruding from an upper surface of the base 42, and when the detecting plate 30 is rotated to the trigger position, the wedge portion 411 contacts the second side surface 35 of the detecting plate 30 to prevent the detecting plate 30 from being out of contact with the alarm switch 20. Second side surface 35 of detection plate 30 is opposite to first side surface 33 thereof, and first side surface 33 is used for contacting alarm switch 20.

The seat 42 may be used to carry the check 41, providing a mounting location for it. Specifically, the base 42 is provided with a second groove 421, the second groove 421 is used for installing the check member 41, the check member 41 is rotatably arranged in the second groove 421, the wedge-shaped portion 411 of the check member 41 protrudes out of the upper surface of the second groove 421, and an elastic member, such as a spring, is arranged between the check member 41 and the groove bottom of the second groove 421, so that the check member 41 can be pressed down when the detection plate 30 rotates and needs to pass through the check member 41 (such as when the detection plate rotates towards the alarm switch 20), thereby preventing the check member 41 from interfering with the rotation of the detection plate 30. When the detection plate 30 rotates, the check member 41 is sprung up, and the wedge portion 411 forms a stopper against the detection plate 30 to prevent it from rotating. It should be noted that in other embodiments, check 41 may have other suitable configurations.

Alternatively, in order to improve the compactness of the structure, when the detection plate 30 is in the initial position, the base 42 is located below the detection plate 30, the detection plate 30 is provided with the avoidance hole 31, and the wedge portion 411 can at least partially extend into the avoidance hole 31. By arranging the avoiding hole 31, the base 42 can be arranged below the detection plate 30, so that the occupied space is smaller, and the wedge-shaped part 411 of the check member 41 is positioned at the position corresponding to the second side surface 35 when the detection plate 30 is in the triggering angle range, so that the check member 41 can stop the detection plate 30 without adjusting the position of the base 42, and the structure of the detection device is simpler and more compact.

In this case, since the check member 41 is positioned below the sensing plate 30 when the sensing plate 30 is in the initial position and since the top end of the wedge portion 411 has a height higher than the lower surface of the sensing plate 30, an escape hole 31 is provided in the sensing plate 30 to escape the wedge portion 411. Moreover, when the detection plate 30 starts to rotate from the initial position to the alarm switch 20, because the side surface of the wedge-shaped part 411 away from the alarm switch 20 is an inclined surface, the hole wall 311 of the avoidance hole 31 can contact and press down the wedge-shaped part 411 in the rotation process of the detection plate 30, so that the detection plate 30 can smoothly rotate over the non-return piece 41, manual intervention is not needed in the process, and the degree of automation is better.

It should be noted that in other embodiments, other structures may be adopted to check the detection plate 30, for example, structures such as a check claw are used, and this embodiment does not limit this.

Alternatively, the detection plate 30 corresponding to the touch position has a rotation angle of 30 ° with respect to the initial position, and the detection plate 30 maintains contact with the alarm switch 20 when the rotation angle of the detection plate 30 with respect to the initial position is in the range of 30 ° to 40 °. In other words, the detection plate 30 starts to contact with the alarm switch 20 when rotating to a rotation angle of 30 ° from the initial position, so that the detection plate is triggered, and then the detection plate 30 continues to rotate until the rotation angle is 40 °, the tightening rod 100 is separated from the detection plate 30, and the alarm switch 20 is always triggered in the process, so that continuous alarm signals can be output, and the condition that a worker misses an alarm is avoided. Triggering the alarm switch 20 within this range can ensure that the length of the detection board 30 is moderate, and it is not too long or too short, and can ensure that the volume of the detection device is small, and the structure is compact, thereby reducing the production cost.

Of course, in other embodiments, the triggering angle range may be other ranges according to different needs, and the embodiment does not limit this.

Optionally, the detecting device further comprises a positioning pin 70, the positioning pin 70 is fixedly disposed on the mounting bracket 10, and the positioning pin 70 and the alarm switch 20 are located on the same side of the detecting plate 30 to define the maximum rotatable angle of the detecting plate 30. If the positioning pin 70 is not provided, the detection plate 30 may rotate more than one turn when the collision force of the tightening lever 100 against the detection plate 30 is too large, which makes the detection unstable and unreliable, and in order to prevent this, the maximum rotatable angle of the detection plate 30 is defined by providing the positioning pin 70.

Alternatively, in order to make the worker timely aware of the fact that the height H of the tightening rod 100 is lower than a predetermined height, the alarm switch 20 is electrically connected to the display screen to display the alarm signal generated by the alarm switch 20 on the display screen. A display screen may be provided in the monitoring room and used to display the alarm signal sent by the alarm switch 20 for the staff to view and to repair or replace the tightening rod 100 at any time. At the same time, the operator may manually reset the test plate 30, i.e., return it to its initial position for subsequent use.

As shown in fig. 7 and 8, another aspect of the present application provides a vehicle-loading system. This vehicle system of assembling together includes transfer chain 200, vehicle attaches together tray 300 and detection device, and vehicle attaches together tray 300 and sets up on transfer chain 200 to remove along transfer chain 200, be provided with tightening rod 100 on the vehicle attaches together tray 300, and detection device is foretell detection device, and detection device sets up on transfer chain 200 to whether the height that detects tightening rod 100 is less than the height of regulation.

Through the vehicle system of assembling together that has this detection device, benefit from the detection mode of contact, can 100% detect out the pole 100 that screws up that fails, compare in high accuracy laser rangefinder sensor, this mode is not influenced by light, detection distance etc. and the detection of no mistake, and the reliability is high, and the price only has 30% of high accuracy laser rangefinder sensor moreover, low cost. The high-efficiency and safe online real-time detection can be realized. When the failed tightening rod 100 is detected, the worker can quickly process the failed tightening rod 100 according to the alarm signal displayed by the alarm display screen, and replace the tightening rod 100 within 5 minutes. The maintenance cost is greatly reduced, and only the spring with the rod 100 failed can be better tightened during maintenance without worrying that other equipment of the vehicle assembly system can be damaged by the tightening rod 100 and the production line is shut down for a long time.

This vehicle attaches together system during operation: the vehicle-mounted tray 300 and the tightening rod 100 mounted thereon are moved on the conveyor line 200 in the conveying direction, and when the tightening rod 100 passes the detection plate 30, if the height of the tightening rod 100 is lower than a prescribed height or lower than a prescribed height by a certain value (e.g., 5mm lower than the prescribed height), the tightening rod hits the protruding portion 331 of the detection plate 30, and the force with which the detection plate 30 is contacted is sufficient to disengage the first recess 32 of the detection plate 30 and the stopper plunger 60, so that the detection plate 30 is pushed by the tightening rod 100 to rotate.

During the rotation of the detection plate 30, the hole wall 311 of the avoidance hole 31 of the detection plate 30 contacts the inclined surface of the wedge portion 411 of the check member 41, thereby pressing down the check member 41 to prevent the wedge portion 411 from preventing the detection plate 30 from rotating toward the alarm switch 20.

When the rotation angle of the detection plate 30 reaches 30 degrees, the alarm switch 20 is triggered, and the alarm switch 20 sends out an alarm signal. At this time, the check plate 30 completely rotates over the check member 41, the check member 41 rebounds by the elastic member, and the wedge portion 411 extends to stop the check plate 30 from rotating in the reverse direction.

When the sensing plate 30 rotates to 40 °, the tightening rod 100 is disengaged from the sensing plate 30, the sensing plate 30 is limited within a trigger angle range (i.e., 30 ° to 40 °) by the check 41 for preventing the sensing plate 30 from rotating in the reverse direction and the positioning pin 70 for preventing the sensing plate 30 from rotating through the maximum rotatable angle. In this range, the alarm switch 20 is always in a state of being triggered by the detection board 30, thereby continuously outputting the alarm signal.

Therefore, the worker can see the alarm signal through the alarm display screen in time, the excessively low tightening rod 100 is maintained, the tightening rod is prevented from continuously moving and colliding with other equipment in the vehicle assembling system, and damage is avoided.

According to the embodiment of the application, the detection device can achieve the following beneficial effects:

the detection device of the embodiment has a simple and practical structure, can realize automatic online detection of the tightening rod 100, and has high detection accuracy due to the contact detection mode of the detection plate, so that the conditions of missing detection and false detection can be fully avoided or reduced. In addition, the device is very convenient to install, disassemble and maintain, and the manufacturing cost is low. The tightening rod 100 can be detected safely and reliably by providing the detection means at a desired position to prevent the failed tightening rod from damaging other equipment and from stopping production for a long time (maintenance requires at least 2 hours after damage to the equipment).

It should be understood that although the present description has been described in terms of various embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and those skilled in the art will recognize that the embodiments described herein may be combined as suitable to form other embodiments, as will be appreciated by those skilled in the art.

The above description is only an exemplary embodiment of the present disclosure, and is not intended to limit the scope of the present disclosure. Any person skilled in the art should be able to make equivalent changes, modifications and combinations without departing from the concept and principle of the embodiments of the present application.

Claims (12)

1. A detection device for detecting whether a height (H) at which a tightening rod (100) on a vehicle-attaching tray (300) protrudes downward out of the vehicle-attaching tray (300) is lower than a prescribed height, characterized by comprising:

a mounting bracket (10);

an alarm switch (20), the alarm switch (20) being disposed on the mounting bracket (10); and

the detection plate (30) is rotatably arranged on the mounting bracket (10) through a mounting pin (50), the height of the upper surface of the detection plate (30) corresponds to the specified height, so that when the height (H) of the tightening rod (100) is lower than the specified height, the tightening rod (100) is in contact with the detection plate (30) in the initial position and pushes the detection plate (30) to rotate to the triggering position for triggering the alarm switch (20), and the alarm switch (20) sends out an alarm signal.

2. The sensing device as claimed in claim 1, wherein the alarm switch (20) is a touch sensitive switch and is located on a first side of the sensing plate (30) to contact the alarm switch (20) when the sensing plate (30) is rotated to the activated position to activate the alarm switch (20).

3. The sensing device of claim 2, further comprising a check member (41), wherein the check member (41) is disposed on the mounting bracket (10) and maintains the sensing plate (30) in an activated position in contact with the alarm switch (20) when the sensing plate (30) is rotated to the activated position.

4. Detection device according to claim 3, characterized in that the detection plate (30) has a first side face (33) for contacting the alarm switch (20) and a second side face (35) opposite the first side face, the detection device also comprises a base (42) and an elastic piece, wherein the base (42) is fixedly arranged on the mounting bracket (10), the check (41) is disposed on the seat (42), the elastic member is disposed between the check (41) and the seat (42), the check member (41) has a wedge portion (411) protruding from an upper surface of the seat (42), said wedge portion (411) contacting a second side surface (35) of said detection plate (30) when said detection plate (30) is rotated to said trigger position, so as to prevent the detection plate (30) from being out of contact with the alarm switch (20).

5. The detecting device according to claim 4, characterized in that when the detecting plate (30) is at the initial position, the base (42) is located below the detecting plate (30), the detecting plate (30) is provided with an avoiding hole (31), and the wedge-shaped portion (411) can at least partially extend into the avoiding hole (31).

6. The sensing device of claim 1, wherein the sensing plate (30) has a first recess (32) formed therein, the sensing device further comprising a restraining plunger (60), wherein the restraining plunger (60) is disposed on the mounting bracket (10) and at least a portion of the restraining plunger (60) is positioned within the first recess (32) to limit wobble of the sensing plate (30) when in the initial position.

7. The detecting device for detecting the rotation of a motor rotor as claimed in claim 6, wherein the surface of the first groove (32) is a spherical surface, and the part of the limiting plunger (60) extending into the first groove (32) is a spherical or hemispherical shape.

8. The sensing device as claimed in claim 2, wherein the sensing plate (30) corresponding to the triggering position has a rotation angle of 30 ° with respect to the initial position, and the sensing plate (30) maintains contact with the alarm switch (20) when the rotation angle of the sensing plate (30) with respect to the initial position is in a range of 30 ° to 40 °.

9. The sensing device as claimed in claim 1, further comprising a positioning pin (70), wherein the positioning pin (70) is fixedly disposed on the mounting bracket (10), and the positioning pin (70) and the alarm switch (20) are located on the same side of the sensing plate (30) to define a maximum rotatable angle of the sensing plate (30).

10. The detecting device according to claim 1, wherein the detecting plate (30) has a protruding portion (331), and when the detecting plate (30) is in the initial position, the protruding portion (331) is capable of coming into contact with any one of a plurality of tightening rods (100) on the vehicle-mounting tray (300) having a height lower than the prescribed height.

11. A detection device according to claim 10, characterized in that the detection plate (30) has a protruding portion (332) facing the alarm switch (20), the protruding portion (332) being used to trigger the alarm switch (20).

12. A vehicle-attaching system characterized by comprising a conveying line (200), a vehicle-attaching tray (300), and a detecting device, wherein the vehicle-attaching tray (300) is provided on the conveying line (200) and is movable along the conveying line (200), a tightening rod (100) is provided on the vehicle-attaching tray (300), the detecting device is the detecting device set forth in any one of claims 1 to 11, and the detecting device is provided on the conveying line (200) to detect whether a height (H) of the tightening rod (100) is lower than a prescribed height.

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