WO2016091176A1

WO2016091176A1 - Segmented vehicle drive system and vehicle inspection system

Info

Publication number: WO2016091176A1
Application number: PCT/CN2015/096879
Authority: WO
Inventors: 胡煜; 马媛; 刘生玺; 喻卫丰; 李营
Original assignee: 同方威视技术股份有限公司
Priority date: 2014-12-11
Filing date: 2015-12-10
Publication date: 2016-06-16
Also published as: CN104528305A; CN104528305B; MY189043A

Abstract

Provided are a segmented vehicle drive system and a vehicle inspection system, comprising a controller, a first drive apparatus (111) and second drive apparatus (112), and a first push member (1113) and second push member (1123). The controller controls the first push member (1113) to push the rear wheel of a vehicle at a first speed, and when a signal emitted by a first sensor (1114) is received, controls the second push member (1123) to move, causing the time interval of the second push member (1123) making contact with the front wheel of the vehicle to be equal to the time interval of the first sensor (1114) emitting a signal and the second sensor (1124) emitting a signal; further, the second push member (1123) makes contact with the front wheel at the same speed and pushes the front wheel of the vehicle. It is not necessary for the segmented vehicle drive system to adjust acceleration and deceleration parameters for different wheel diameters, thus inspection efficiency is effectively improved.

Description

Segmented vehicle drag system and vehicle inspection system

Technical field

The present invention relates to the field of vehicle inspection technology, and in particular, to a segmented vehicle drag system and a vehicle inspection system.

Background technique

The vehicle inspection system usually uses a chain-type drag device, but the components on the chain and the chain appear on the scanned image, which seriously affects the image quality and easily obscures the image details. The existing segmented drag device, when the vehicle passes through the junction of the two-stage drag device, it is difficult to detect when the propeller is on the front wheel of the vehicle due to the detection method, the sensor arrangement, etc., and because the wheel diameters of different vehicles are different, Before each inspection, it is necessary to correct the acceleration and deceleration time according to the formula, which seriously affects the inspection efficiency, and the pass rate cannot be guaranteed.

Summary of the invention

In order to make the vehicle unobstructed by the beam current and the speed is stable, the vehicle is allowed to pass through the beam at a constant speed, and the acceleration/deceleration parameters are not adjusted for different wheel diameters, the present invention provides a segmented vehicle drag system and a vehicle inspection system.

The invention provides a segmented vehicle drag system, comprising:

a controller and a first drag device and a second drag device arranged in sequence along the direction of the dragging vehicle, wherein the first drag device and the second drag device are provided with a spacing portion of a predetermined distance;

The first dragging device includes a first pushing member for pushing the wheel to move the vehicle;

The second dragging device includes a second pushing member for pushing the wheel to move the vehicle;

The first drag device is provided with a first sensor, and the first sensor is disposed in the vehicle a falling edge of the front wheel leaving position for signaling when the front wheel of the vehicle leaves the first drag device, and the second drag device is provided with a second sensor for traveling to the front and rear of the vehicle Signal when the position where the device is touched is dragged;

The controller controls the first pushing member to push the rear wheel of the vehicle at a first speed, and controls the movement of the second pushing member when receiving the signal from the first sensor to move the second pushing member from the beginning to the second pushing member The time interval of contact with the front wheel of the vehicle is equal to the time interval at which the first sensor sends a signal to the second sensor, and the second pusher contacts the front wheel of the vehicle at the first speed and pushes the front wheel of the vehicle to maintain the vehicle Or the controller controls the first pusher to push the rear wheel of the vehicle at a first speed, and delays the movement of the second pusher by a period of time when receiving the signal from the first sensor, the second pusher First accelerating and then decelerating to the first speed and maintaining the first speed to contact the front wheel of the vehicle, such that the delayed period of time and the second pusher move from the beginning to the time interval between the second pusher and the front wheel of the vehicle. And the time interval between the signal sent by the first sensor and the signal sent by the second sensor is equal.

Preferably, the first drag device is disposed upstream of the second drag device in a direction in which the vehicle is dragged.

Preferably, the first drag device further includes a first support plate and a first elongated traction member, the first elongated traction member being coupled to the first pushing member, the first pushing member surrounding the first A support plate is operative to urge the wheel to move along the first support plate.

Preferably, the second dragging device further includes a second supporting plate and a second elongated pulling member, wherein the second elongated pulling member is coupled to the second pushing member, the second pushing member surrounding the first The two support plates operate to push the wheels along the second support plate.

Preferably, the second pusher is in contact with the front wheel of the vehicle before the first pusher is disengaged from the rear wheel of the vehicle.

Preferably, the initial position of the second elongated traction member is set according to a preset distance between the second pushing member and the second sensor.

Preferably, the distance between the first sensor and the second sensor The distance between the second pusher and the second sensor is equal.

Preferably, the second elongated traction member runs at a constant speed at the first speed.

Preferably, the distance between the first sensor and the second sensor is equal to, greater than or smaller than the distance between the second pusher and the second sensor.

Preferably, the second elongated traction member accelerates and then decelerates to a first speed.

Preferably, the acceleration movement is a uniform acceleration motion, and/or the deceleration motion is a uniform deceleration motion.

Preferably, the first sensor and/or the second sensor are any one of a photoelectric sensor, a proximity switch or a pressure sensor.

Preferably, the elongated traction member is a chain or a chain of plates, and/or the pusher is a push roller.

Furthermore, the present invention provides a vehicle inspection system comprising:

Check the channel;

The segmented vehicle drag system according to any one of the preceding claims, wherein the first dragging device and the second dragging device are disposed in the inspection channel;

a ray inspection system disposed between the first drag device and the second drag device to pass a path of at least a portion of the ray of the radiographic inspection system through the first drag device and the second drag The spacing between the moving devices.

The invention accurately controls the second group of drag devices by following the sensors provided on the front and rear segmented drag devices and the output torque of the drag system, and keeps the front wheels, so that the vehicle as a whole passes through the two sections of the scanning device at a constant speed, avoiding the front and rear wheels. Being dragged due to different speeds, and due to different wheel diameters, the acceleration/deceleration time needs to be adjusted repeatedly according to the wheel diameter when chasing the wheels, which effectively improves the inspection efficiency.

DRAWINGS

The drawings described herein are provided to provide a further understanding of the invention, and are a It does not constitute an undue limitation of the invention. In the drawing:

1 is a front elevational view of one embodiment of a vehicle inspection system in accordance with an embodiment of the present invention;

2 is a top plan view of one embodiment of a vehicle inspection system in accordance with an embodiment of the present invention;

3 is a side elevational view of one embodiment of a vehicle inspection system in accordance with an embodiment of the present invention;

4 is a top plan view of a segmented vehicle drag system of a vehicle inspection system in accordance with an embodiment of the present invention;

5 is a top plan view of a segmented vehicle drag system of a vehicle inspection system in accordance with another embodiment of the present invention;

6 is a control schematic diagram of a vehicle inspection system in accordance with an embodiment of the present invention, wherein the vehicle drag system includes two drag devices;

Figure 7 is a velocity-time curve of the second pusher in the embodiment of the present invention.

detailed description

The specific embodiments of the present invention are further described in detail below with reference to the drawings and embodiments. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

Figure 1 is a front elevational view of one embodiment of an inspection system of the present invention;

As shown in FIG. 1, a vehicle inspection system according to an embodiment of the present invention includes a segmented vehicle drag system 100, an inspection passage 200, and a radiation inspection system 300.

2 is a plan view of an inspection system according to an embodiment of the present invention. As shown in FIG. 2, the segmented vehicle drag system 100 includes: a first drag device 111 and a second drag arranged in sequence along the direction E of the dragged vehicle. The device 112, in the direction E of dragging the vehicle, the first drag device 111 is disposed upstream of the second drag device 112 and the first drag device 111 and the second drag device 112 A spacing portion 113 is provided between the first dragging device 111 and the direction in the direction E of dragging the vehicle The second drag devices 112 are spaced apart by a predetermined distance. The first drag device 111 and the second drag device 112 are disposed in the inspection channel 200. The radiology inspection system 300 is disposed between the first drag device and the second drag device, so that a path of at least a portion of the rays of the radiographic inspection system 300 passes through the first drag device 111 and A spacing portion 113 between the second drag devices 112.

In some embodiments of the present invention, the radiographic inspection system 300 includes a source of radiation disposed one above and below the spacing portion 113 between the first and

second drag devices

111 and 112. And the other one of the upper and lower portions of the spacing portion 113 at least partially disposed between the first drag device 111 and the second drag device 112 for receiving a radiation source and passing through the inspection A detector of the ray of the vehicle. The source of radiation may be an X-ray source, or other suitable source of radiation. A protective wall is disposed on both sides of the inspection channel 200, and a scanning device frame is disposed in the range of the inspection channel 200. The radiation source is disposed at the top of the scanning device frame to scan the vehicle passing through the inspection channel 200, and the detector Set under the ground corresponding to the source of the radiation.

3 is a side view of an inspection system according to an embodiment of the present invention, and FIGS. 4 and 5 are top views of a segmented vehicle drag system of a vehicle inspection system according to an embodiment of the present invention, as shown in FIGS. 3, 4, and 5. The first dragging device 111 includes a first supporting plate 1111, a first elongated pulling member 1112, and a first pushing member 1113 connected to the first elongated pulling member 1112, the first pushing member 1113 surrounding The first supporting plate 1111 is configured to push the wheel to move along the first supporting plate 1111 to advance the vehicle. In the embodiment, the first elongated pulling member 1112 adopts a chain structure, which is called a first chain. The second dragging device 112 includes a second supporting plate 1121, a second elongated pulling member 1122, and a second pushing member 1123 connected to the second elongated pulling member 1122. The second pushing member 1123 surrounds the second pushing member 1123. The second supporting plate 1121 is configured to push the wheel to move along the second supporting plate 1121 to advance the vehicle. In the embodiment, the second elongated pulling member 1122 adopts a chain structure, which is called a second chain.

Although described with a chain as an elongated traction member, the elongated body of the present invention The traction member can be any suitable elongated traction member such as a plate chain, belt, or the like.

6 is a schematic diagram of control of a vehicle inspection system according to an embodiment of the present invention. The vehicle inspection system includes a segmented vehicle drag system, wherein the segmented vehicle drag system includes two drag devices, as shown in FIG. The first drag device 111 is provided with a first sensor 1114 disposed at a falling edge of the vehicle front wheel leaving position for signaling when the front wheel of the vehicle leaves the first drag device 111, the second drag The second device 1124 is disposed on the moving device 112 for transmitting a signal when the front wheel of the vehicle travels to a position just in contact with the second drag device 112;

The controller controls the first pushing member 1113 to push the rear wheel of the vehicle at a first speed, and controls the movement of the second elongated pulling member 1122, that is, the second chain when receiving the signal from the first sensor 1114, so that the second pushing member 1123 The time interval from the start of movement to the second pusher 1123 in contact with the front wheel of the vehicle is equal to the time interval at which the first sensor 1114 signals a signal to the second sensor 1124, and the second pusher 1123 is at the first speed. It contacts the front wheel of the vehicle and pushes the front wheel of the vehicle to keep the vehicle running at a constant speed.

The present invention determines the first sensor 1114 by first arranging the positions of the first sensor 1114 and the second sensor 1124 and the initial position of the second elongated traction member of the second drag device on the front and rear segmented drag devices. The positional relationship between the two sensors 1124 and the second pushing member 1123, and precisely controlling the movement of the pushing members on the two-stage dragging device by the front and rear of the controller, so that the vehicle can pass through the two-stage scanning device at a constant speed without changing the radiographic inspection system. The beam outgoing frequency of the X-ray generating device does not need to consider the wheel diameter adjustment acceleration/deceleration time, which reduces the complexity of the beaming and detection system control and improves the detection efficiency of the system. In addition, the radiation inspection system disposed between the first drag device and the second drag device may emit rays from the radiation source through the gap between the first drag device and the second drag device, and be detected by the detector. Receiving, this avoids the influence of the drag device and the pusher on the scanned image caused by the irradiation of the radiation onto the drag device, so that the scanned image contains only the transmission information of the inspected vehicle.

Further, before the first pushing member 1112 is separated from the rear wheel of the vehicle, the second push The moving member 1123 is in contact with the front wheel of the vehicle.

Further, an initial position of the second elongated traction member is set according to a preset distance between the second pushing member and the second sensor.

In the embodiment of the present invention, the first sensor 1114 is disposed at the point B of the first drag device 111 to detect the falling edge of the front wheel of the vehicle, and the left to right of the vehicle is moved from the first drag device 111 to the first drag. The device 112, the first pusher 1113 of the first drag device 111 on the left pushes the rear wheel of the vehicle to move the cart to the right at a speed V. When the front wheel of the vehicle reaches the sensor disposed at the position B, the first pusher 1123 on the right second drag device 112 is docked at the initial position C. A second sensor is disposed at point A of the second drag device 112, and point A is a position at which the front wheel of the vehicle travels just in contact with the second drag device 112.

The initial position of the second elongated traction member 1122 is set according to a preset distance between the second pushing member 1123 and the second sensor 1124, so that the linear distance BA is equal to the arc CA, When the front wheel of the vehicle leaves B, the second drag device 112 is activated and approaches the front wheel of the vehicle at the same speed V (regardless of the acceleration time), and the second pushing member 1123 of the second drag device can just lean against the vehicle. The front wheel pushes the vehicle forward at a constant speed V to maintain the running state of the vehicle. Since the first sensor 1114 at point B detects a falling edge when the front wheel of the vehicle leaves, the timing of the second pushing member 1123 of the second drag device is not affected by the change in the diameter of the wheel of the scanned vehicle. Wherein, the position of the first sensor 1114 disposed at point B needs to correspond to the arc length CA, and the height needs to be set at the height of the contact point between the propeller and the wheel.

In another embodiment of the present invention, the first sensor 1114 is disposed at a point B of the first drag device 111 to detect a falling edge of the front wheel of the vehicle, and the initial position of the second elongated traction member 1122 is according to the preset The distance between the second pushing member 1123 and the second sensor 1124 is set such that the straight line distance BA is greater than the arc CA, that is, BA>CA, when the front wheel of the vehicle leaves B, the second thinning is delayed for a period of time. The second pushing member 1123 of the long traction member 1122 accelerates to catch the front wheel, then decelerates the wheel, and controls the second pushing member 1123 to be in close contact with the front wheel of the vehicle, and is evenly circulated at a speed V1. Speeding forward to maintain the uniform running state of the vehicle, causing the delayed period of time and the sum of the time interval between the second pusher 1123 and the second pusher 1123 to contact the front wheel of the vehicle and the first sensor 1114 to signal The time interval at which the second sensor 1124 signals is equal. Similarly, the same applies to the straight line distance BA being equal to or smaller than the arc CA. The speed-time curve of the second pushing member 1123 can be referred to FIG.

Wherein, the second elongated traction member 1122 accelerates and then decelerates to the first speed.

Wherein, the acceleration motion may be a uniform acceleration motion.

Wherein, the deceleration motion may be a uniform deceleration motion.

The first sensor 1114 and/or the second sensor 1124 may be a photoelectric sensor, a proximity switch, a pressure sensor, or the like, which is not limited in the present invention. In the solution of the embodiment, the vehicle moving speed is maintained at V1, and it is not necessary to change the beam outgoing frequency of the X-ray generating device in the radiographic inspection system, and the wheel diameter adjustment acceleration/deceleration time is not considered, thereby reducing the complexity of the beaming and detecting system control.

In the embodiment of the invention, the pushing member may be a push roller or other structure having the same function. The shape of the pushing member may be a cylindrical shape, a wedge shape, a trapezoidal shape, or a triangular shape. The material of the pushing member may be stainless steel, a polymer material, or the like, which is not limited in the present invention.

The segmented vehicle drag system and the vehicle inspection system provided by the invention provide a sensor and a drag system output torque on the front and rear segmented drag device, precisely control the second drag device, and keep up with the front wheel, so that The whole vehicle passes through the two-stage scanning device at a constant speed to avoid the front and rear wheels being dragged due to different speeds, and the different acceleration and deceleration time of the wheel is required to be repeatedly adjusted according to the wheel diameter due to different wheel diameters, thereby effectively improving the inspection efficiency.

The above embodiments are merely illustrative of the present invention and are not intended to be limiting of the invention, and various modifications and changes can be made without departing from the spirit and scope of the invention. Equivalent technical solutions are also within the scope of the invention, and the scope of the invention is defined by the claims.

Claims

A segmented vehicle drag system (100), comprising:

a controller and a first drag device (111) and a second drag device (112) arranged in sequence along the direction of the dragging vehicle; the first drag device (111) and the second drag device (112) a spacing portion (113) between predetermined distances;

The first dragging device (111) includes a first pushing member (1113) for pushing the wheel to move the vehicle;

The second dragging device (112) includes a second pushing member (1123) for pushing the wheel to move the vehicle;

The first dragging device (111) is provided with a first sensor (1114), and the first sensor (1114) is disposed at a falling edge of the vehicle front wheel leaving position for the front wheel of the vehicle to leave the first dragging device (111) Signaling, the second dragging device (112) is provided with a second sensor (1124) for signaling when the front wheel of the vehicle travels to a position just in contact with the second dragging device (112);

The controller controls the first pushing member (1113) to push the rear wheel of the vehicle at a first speed, and controls the movement of the second pushing member (1123) when receiving the signal from the first sensor (1114), so that the second pushing member ( 1123) The time interval from the start of movement to the second pusher (1123) in contact with the front wheel of the vehicle is equal to the time interval at which the first sensor (1114) signals to the second sensor (1124) to signal, and the second push The piece (1123) contacts the front wheel of the vehicle at the first speed and pushes the front wheel of the vehicle to maintain an operating state of the vehicle;

Alternatively, the controller controls the first pusher (1113) to push the rear wheel of the vehicle at a first speed, and delays the movement of the second pusher (1123) after a period of time when receiving the signal from the first sensor (1114). The second pushing member (1123) first accelerates and then decelerates to the first speed and maintains the first speed to contact the front wheel of the vehicle, so that the delayed period of time and the second pushing member (1123) move from the beginning to the second The sum of the time intervals of the pusher (1123) in contact with the front wheel of the vehicle and the first sensor (1114) signal to the first The time interval at which the two sensors (1124) signal is equal.
The segmented vehicle drag system according to claim 1, wherein said first dragging means (111) is disposed at said second dragging means (112) in a direction of dragging the vehicle Upstream.
The segmented vehicle drag system according to claim 1, wherein said first dragging device (111) further comprises a first support plate (1111) and a first elongated traction member (1112). The first elongated traction member (1112) is coupled to the first pushing member (1113), and the first pushing member (1113) is operated around the first supporting plate (1111) for pushing the wheel along the first supporting plate (1111) Exercise.
The segmented vehicle drag system according to claim 1, wherein said second dragging device (112) further comprises a second support plate (1121) and a second elongated traction member (1122). The second elongated traction member (1122) is coupled to the second pushing member (1123), and the second pushing member (1123) is operated around the second supporting plate (1121) for pushing the wheel along the second supporting plate (1121) Exercise.
The segmented vehicle drag system according to claim 1, wherein the second pusher member (1123) is in contact with the front wheel of the vehicle before the first pusher member (1113) is separated from the rear wheel of the vehicle.
The segmented vehicle drag system according to claim 4, wherein the initial position of the second elongated traction member (1122) is based on the preset second pushing member (1123) and the first The distance between the two sensors (1124) is set.
The segmented vehicle drag system according to claim 1, wherein a distance between said first sensor (1114) and said second sensor (1124) and said second pusher (1123) The distance from the second sensor (1124) is equal.
The segmented vehicle drag system of claim 6 wherein said second elongated traction member (1122) operates at a constant speed at said first speed.
The segmented vehicle drag system according to claim 1, wherein between the first sensor (1114) and the second sensor (1124) The distance is equal to, greater than, or smaller than the distance between the second pusher (1123) and the second sensor (1124).
The segmented vehicle drag system of claim 9 wherein said second elongated traction member (1122) is accelerated and then decelerated to a first speed.
The segmented vehicle drag system according to claim 10, wherein the acceleration motion is a uniform acceleration motion, and/or the deceleration motion is a uniform deceleration motion.
The segmented vehicle drag system according to claim 1, wherein the first sensor (1114) and/or the second sensor (1124) are photoelectric sensors, proximity switches or pressure sensors Any one.
A segmented vehicle drag system according to claim 3 or 4, wherein the elongated traction member is a chain or a chain of plates, and/or the pusher member is a push roller.
A vehicle inspection system (300), comprising:

Check channel (200);

The segmented vehicle drag system of claim 1 wherein the first dragging device (111) and the second dragging device (112) are disposed in the inspection channel;

a radiographic inspection system (300) disposed between the first drag device (111) and the second drag device (112) to pass a path of at least a portion of the rays of the radiographic inspection system (300) A spacing portion between the first dragging device (111) and the second dragging device (112).