CN1309609C - Trailer of trailer system used in radiation imaging - Google Patents

Abstract

A trailer used for a trailer system in radiation imaging, relating to the technical field of trailer systems for radiation imaging detection. It includes a vehicle frame, multiple pairs of guide wheels, and a lanyard bolt is installed on the vehicle frame. The left platform of the vehicle frame and the right platform of the vehicle frame are hinged, and the middle part of the upper surface of the left platform of the vehicle frame and the right platform of the vehicle frame is provided with a positioning nest. The front and rear ends of the right platform of the frame are respectively connected with ramps, each outer end of the left platform of the vehicle frame and the right platform of the vehicle frame is provided with a frame plate, and the outer middle part of each frame plate is provided with a collision block. When the present invention is used in conjunction with the anchoring device fixed on the foundation and applied to a large-scale container inspection system, it can not only reduce the requirement for the accuracy of track installation, but also make the installation and use of the ramp easy and improve the reliability of trailer positioning , stability and practicality.

Description

A trailer for a trailer system in radiographic imaging

technical field

The invention relates to the technical field of a trailer system for radiation imaging detection, in particular to a trailer for carrying inspected vehicles.

Background technique

Radiation imaging inspection system is a necessary detection equipment for customs, civil aviation airports and railway systems. It is located in a detection channel that can shield radiation, and is equipped with a fixed radiation source and an array detector that can receive radiation passing through the inspected vehicle. The inspection system needs to use a special dragging device to pass the inspection of the vehicle with the container through the ray beam. The ray passing through the container is transmitted to the detector, and the detector reflects the density distribution of the objects contained in the box according to the change of the ray intensity, and transforms the ray intensity into image grayscale to obtain a perspective image of the object contained in the box . In the prior art, this special-purpose dragging device mainly adopts a flatbed truck or a plate chain conveyor. For example, the 2000 series container goods/vehicle inspection system produced by the American Rapiscan Company uses a flatbed truck to drive the entire container truck. to the flatbed that carries the container truck through the beam. Flatbed trucks occupy a large area and are expensive to manufacture. Due to the inability to reliably locate the inspected vehicle and the instability of its own operation, the image quality is not high, and it is also inconvenient to upload the inspected vehicle due to the high clearance of the flatbed truck from the ground. And the polygonal effect of conveying by plate chain will also reduce the imaging quality, and the noise is very large. In order to overcome the shortcomings in the above-mentioned prior art, the applicant applied for a Chinese patent application No. 02148669.7 on November 15, 2002, "a trailer for an automatic scanning large object radiation inspection system" invention patent , it has the characteristics of low noise, small footprint and low cost, and improves the stability of operation, reduces the platform of the car body to facilitate the loading of the inspected vehicle, and also increases the positioning of the wheels of the truck and the anchoring of the trailer itself. device. But because the vehicle frame of this trailer is formed by the overall fixing of steel plate, many pairs of guide wheels are installed under the integral vehicle frame. In order to avoid torque force when they run on the track, the installation accuracy of the track must meet very high requirements; moreover, the ramp is fixedly connected with the car body, which makes installation and use inconvenient, and the flexibility of the system is poor; in addition, the anchor of the trailer The fixing is only realized by the cooperation of the anchor hook installed on the trailer and the ground wedge, so that the reliability, stability and practicability are not high. For this reason, the applicant has filed a patent application for "a trailer system for radiation imaging".

Contents of the invention

In order to obtain more effective protection for the above-mentioned patent application, the purpose of the present invention is to provide a trailer for a trailer system used in radiation imaging. When the present invention is used in conjunction with an anchoring device fixed on the ground and applied to a large-scale container inspection system, it can not only reduce the requirement for track installation accuracy, but also make the installation and use of the uphill and downhill platforms convenient, and improve the positioning accuracy of the trailer. Reliability, stability and practicality.

In order to achieve the above-mentioned purpose of the invention, the technical solution of the present invention is realized in the following manner: a trailer used in a radiation imaging system, which includes a vehicle frame, a plurality of pairs of vehicles that are connected to the bottom plane of the vehicle frame and can be mounted on rails. Guide wheels, the bottom of the front and rear ends of the center of the vehicle frame are provided with a lanyard bolt that can be connected with the winch wire rope. The anchoring device is fixed to the ground so that the trailer can be self-locked according to the defined position during use. Its structural feature is that the vehicle frame includes a middle section and three parts, left and right, which can be connected with the middle section. The middle section of the vehicle frame is an H-shaped beam frame, and the four corners of the H-shaped beam frame are provided with hinge shafts respectively hinged with the left and right sections of the vehicle frame to form a left platform and a right platform of the vehicle frame. The left platform of the frame and the right platform of the frame are of the same symmetrical design. The middle part of the upper plane of the left platform of the frame and the right platform of the frame is provided with a positioning nest that matches the size of the lower part of the wheel to be inspected. The front ends of each positioning nest are respectively set. There is a card wheel device to prevent the front wheel of the inspected vehicle from sliding down during the trailer walking process. The front and rear ends of the left platform of the vehicle frame and the right platform of the vehicle frame are respectively connected with slope platforms that can make the vehicle under inspection go up and down smoothly. The outer middle part of the shelf plate is provided with a collision block that is used in conjunction with the anchoring device fixed on the ground to make the trailer self-locking.

According to the above technical solution, the left platform of the vehicle frame and the right platform of the vehicle frame are respectively composed of a bottom plate, a pressure plate and a rib plate. The inner bottom surface of each bottom plate is connected with the wheel shafts of the plurality of guide wheels, and a plurality of auxiliary wheels contacting the ground or the track are arranged on the outer end of each bottom plate and under the frame plate, and the bottom plate and the pressure plate are erected to strengthen the strength. Rib connection.

According to the above technical solution, the locking wheel device is composed of a crank and a spring that can be flattened and embedded in the pressing plate. The crank is hinged on the rib plate side plate at the front end of the positioning nest platform, and the two ends of the spring are respectively fixed with the crank and the rib plate. When the front wheel of the vehicle to be inspected is located at the positioning nest, the upper end surface of the crank is lifted to block the wheel in the positioning nest.

According to the above technical solution, the slope platform is composed of a slope platform plate placed on an inclined plane and a leaf spring placed on a plane. One end of the leaf spring is fixed on the base plate, and the other end of the leaf spring is connected with the top foot provided at the lower end of the ramp, so that the lower end of the ramp is suspended, and the rear end of the ramp is connected with the ribs by bolts.

According to the above technical solution, the sectional surface of the collision block is a trapezoid with a large top and a small bottom.

According to the above-mentioned technical scheme, the plurality of pairs of guide wheels and auxiliary wheels are all arranged in four pairs of vertical columns.

The present invention is owing to have adopted above-mentioned structure, forms trailer system with it and the anchoring device that is fixed on the ground. Since the left and right frame platforms of the present invention are flexibly connected to the middle H-shaped beam frame through four hinge shafts, it is ensured that each guide wheel has a larger frame gap when it runs along the track, so that the force on each guide wheel is uniform and does not Torque force will be generated, which reduces the requirements for the installation accuracy of the track. And because the slope platform connected with the two ends of the vehicle frame is improved as a detachable slope platform, it is convenient and flexible to install and use. In addition, the collision block on the trailer is used in conjunction with the anchoring device fixed on the ground, which can greatly improve the reliability, stability and practicability of the operation and anchoring of the trailer. It ensures the smooth loading and unloading of the truck, stable operation and reliable locking.

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the A-A structure of Fig. 1 turning right by 90°;

Fig. 3 is a schematic diagram of the structure in direction B of Fig. 1;

Fig. 4 is a C-C cross-sectional view of Fig. 1;

Fig. 5 is a diagram showing the use of the present invention in cooperation with the ground-fixed anchoring device.

Detailed ways

Referring to Figures 1 to 4, the present invention comprises an H-shaped beam frame 4 and a symmetrically designed frame left platform 6 and a vehicle frame right platform 7 respectively connected to the four corners of the H-shaped beam frame 4 through hinge shafts 5. The vehicle frame 1, is connected with vehicle frame 1 bottom plane and can frame the guide wheel 2 of four pairs of vertical row uniform arrangement of walking on rail. The bottom of the front and rear ends of the H-shaped beam frame 4 center is provided with a lanyard bolt 3 that can be connected with the winch wire rope. The left platform 6 of the vehicle frame and the right platform 7 of the vehicle frame are composed of a base plate 13, a pressing plate 14 and a rib plate 15 respectively. The inner bottom surface of each base plate 13 is connected with the wheel shaft of each guide wheel 2, and the outer end of each base plate 13, under the frame plate 11, is provided with four pairs of auxiliary wheels 16 that are in contact with the ground or track, and are evenly arranged in vertical rows. The pressure plates 14 are connected by ribs 15 erected to strengthen the strength. In the middle of the upper plane of the left platform 6 of the vehicle frame and the right platform 7 of the vehicle frame, a positioning nest 8 matching the size of the lower part of the wheel to be inspected is provided. The car front wheel slides down, is made up of crank 9-1 and spring 9-2 that can be flattened and embedded in the pressing plate 14 The card wheel device 9. Wherein the crank 9-1 is hinged on the rib plate 15 side plates at the front end of the positioning nest platform 8, and the two ends of the spring 9-2 are respectively fixed with the crank 9-1 and the rib plate 15. The front and rear ends of the left platform 6 of the vehicle frame and the right platform 7 of the vehicle frame are respectively connected with a slope plate 10-1 placed on an inclined plane and a leaf spring 10-3 placed on a plane, which can make the vehicle under inspection go up and down smoothly. Slope 10. One end of the leaf spring 10-3 is fixed on the base plate 13, and its other end is connected with the top foot 10-2 provided at the lower end of the ramp plate 10-1, so that the lower end of the ramp plate 10-1 is suspended, and the ramp plate The rear end of 10-1 is connected with rib plate 15 by bolt. Each outer end of the left platform 6 of the vehicle frame and the right platform 7 of the vehicle frame is provided with a shelf plate 11, and the outer middle part of each shelf plate 11 is provided with an anchoring device fixed on the ground for use in conjunction with the self-locking sectional surface of the trailer. Large and small trapezoidal collision block 12.

When the present invention is in use, the trailer is placed in the inspection channel with rails in the scanning area, so that the bumper 12 on the trailer is locked by an anchoring device fixed to the ground, as shown in FIG. 5 . A winch is set at both ends of the inspection passage and the wire rope of the winch is connected with the lanyard bolt 3 on the H-shaped beam frame 4 of the trailer. The inspected vehicle drives on the left platform 6 and the right platform 7 of the trailer through the uphill platform 10 at one end of the trailer. Pushed forward. The lower end of crank 9-1 is under the effect of spring 9-2, and its upper end forms intersection angle with pressing plate 14, and when the front wheel of the vehicle to be checked is opened to upper end face position, upper end face is pressed down and passed over it. Once the front wheels on both sides of the vehicle under inspection enter each positioning nest 8, the upper end surface of the crank 9-1 will rotate counterclockwise around the twisted shaft under the effect of the spring 9-2, and withstand the rear and lower parts of the front wheels of the vehicle, so that It cannot go backwards, as shown in Figure 4.

Before the trailer starts, the anchoring device releases the impact block 12 of the trailer, and the winch pulls the trailer forward on the track through the steel wire rope in the lanyard bolt 3 on the H-shaped beam frame 4, driving the truck to pass the scanning smoothly. area. After the inspection, the trailer drives the collection truck to move towards the exit of the scanning channel, slows down and slides until the bumper 12 of the trailer is locked by the anchoring device fixed at the exit and the ground, and the trailer is anchored again. At this time, the collection truck starts and can leave the trailer from the downhill platform 10 of the trailer.

Afterwards, the anchoring device releases the bumper 12 of the trailer, and the trailer can drive back to the entrance of the scanning channel under the traction of the winch, and also slows down and slides until the bumper 12 of the trailer is locked by the anchoring device at the entrance again. Scan workflow.

Claims (6)

1. A trailer for a trailer system in radiographic imaging, which includes a vehicle frame (1), a plurality of pairs of guide wheels (2) that are connected to the bottom plane of the vehicle frame (1) and can be mounted on rails, and the vehicle frame (1) The bottom of the front and rear ends of the center is provided with a lanyard bolt (3) that can be connected with the winch wire rope, and it is characterized in that the vehicle frame (1) includes a middle section and two left and right sections that can be connected with the middle section. Part, the middle section of the vehicle frame (1) is an H-shaped beam frame (4), and the four corners of the H-shaped beam frame (4) are provided with hinge shafts (5) respectively connected to the left and right sections of the vehicle frame (1). Hinged to form vehicle frame left platform (6) and vehicle frame right platform (7), vehicle frame left platform (6) and vehicle frame right platform (7) are consistent symmetrical design, vehicle frame left platform (6) and vehicle frame right platform The middle part of the upper plane of (7) is provided with a positioning nest (8) that matches the size of the lower part of the wheel to be inspected. The card wheel device (9), the front and rear ends of the left platform of the vehicle frame (6) and the right platform of the vehicle frame (7) are respectively connected with a slope platform (10) that can make the car under inspection stably drive up and down, and the left side of the vehicle frame Each outer end of the platform (6) and the right platform (7) of the vehicle frame is provided with a shelf plate (11), and the outer middle part of each shelf plate (11) is provided with an anchoring device fixed on the ground for use in conjunction with the trailer, which can make the trailer self-locking The striker (12). 2. according to claim 1, is used for the trailer of the trailer system in radiographic imaging, it is characterized in that, described vehicle frame left platform (6) and vehicle frame right platform (7) are respectively made of bottom plate (13), pressing plate ( 14) and ribs (15), the inner bottom surface of each base plate (13) is connected with the axles of the plurality of guide wheels (2), and the outer end of each base plate (13) and the frame plate (11) are provided with a A plurality of auxiliary wheels (16) that are in contact with the ground or rails are connected between the bottom plate (13) and the pressing plate (14) by erected stiffeners (15) to strengthen the strength. 3. The trailer for the trailer system used in radiographic imaging according to claim 1, characterized in that, the clamping wheel device (9) is a crank (9-1) that can be flattened and embedded in the pressing plate (14) and spring (9-2), the crank (9-1) is hinged on the rib plate (15) side plate at the front end of the positioning nest (8), and the two ends of the spring (9-2) are connected to the crank (9-1) respectively. Fix with rib plate (15); When the front wheel of the inspected car was positioned at the positioning nest (8), the upper end surface of the crank (9-1) was lifted to block the wheel in the positioning nest (8). 4. The trailer used for the trailer system in radiation imaging according to claim 1, 2 or 3, characterized in that, the ramp (10) is a ramp plate (10-1) placed on an inclined plane and a plane Placed leaf spring (10-3) is formed, and one end of leaf spring (10-3) is fixed on the base plate (13), and the other end of leaf spring (10-3) is set with the lower end of slope plate (10-1). The top foot (10-2) is connected so that the lower end of the ramp plate (10-1) is suspended, and the rear end of the ramp plate (10-1) is connected with the rib plate (15) by bolts. 5. The trailer used for the trailer system in radiation imaging according to claim 4, characterized in that, the sectional surface of the collision block (12) is a trapezoid with a larger top and a smaller bottom. 6. The trailer used for the trailer system in radiation imaging according to claim 4, characterized in that, the plurality of pairs of guide wheels (2) and auxiliary wheels (16) are arranged uniformly in four pairs vertically.

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