CN215078766U

CN215078766U - Trailer device for CT scanning bed

Info

Publication number: CN215078766U
Application number: CN202120693835.5U
Authority: CN
Inventors: 王宁; 刘猛
Original assignee: Suzhou Boying Medical Technology Co ltd
Current assignee: Suzhou Boying Medical Technology Co ltd
Priority date: 2021-04-06
Filing date: 2021-04-06
Publication date: 2021-12-10
Anticipated expiration: 2031-04-06

Abstract

The utility model discloses a trailer device for CT scanning bed, including trailer body, a pair of parallel arrangement's linear guide rail, sliding connection has first slider and second slider on one of them linear guide rail, sliding connection has third slider and fourth slider, its characterized in that on another linear guide rail: the first sliding block is fixedly connected with the trailer body, and the second sliding block, the third sliding block and the fourth sliding block are respectively connected with the trailer body through a floating installation connecting structure. The utility model discloses a trailer can adapt to there being parallel error's track, avoids the dead condition of motion card to take place, reduces the installation accuracy requirement to parallel guide, can improve parallel guide's installation effectiveness, can guarantee again that the operation of scanning bed is in the same direction as smooth, steady.

Description

Trailer device for CT scanning bed

Technical Field

The utility model relates to a scanning bed for image detects, concretely relates to trailer device for CT scanning bed.

Background

CT is a common disease diagnosis device used in imaging department in hospitals, and requires a patient to lie on a bed board of a scanning bed, and the patient is carried by the movement of the bed board, and an image for diagnosis is acquired during the movement. The bed board is driven to move by a trailer arranged on the bed frame, the trailer moves on the two parallel guide rails and performs linear motion under the action of thrust or pull force.

At present, two parallel guide rails usually adopt linear guide rails (linear guide rails), a trailer moving between the two parallel guide rails has high requirement on the parallelism of the guide rails, and when the parallelism does not meet the requirement, the scanning bed is easy to block, block and the like in the process of horizontal displacement. The leveling of two guide rails is a time-consuming and labor-consuming task.

The chinese invention application CN106580363A discloses a scanning bed, which comprises a scanning bed body, wherein a horizontal feeding device is arranged below the scanning bed; the horizontal feeding device comprises a U-shaped connecting plate, a left beam and a right beam are respectively arranged on the left side and the right side of the U-shaped connecting plate, a rectangular track with inward-arranged sliding grooves is arranged on the inner side of the left beam, and a linear guide rail is arranged on the inner side of the right beam; the horizontal feeding device also comprises a trailer which is arranged at the bottom of the scanning bed in a matching way, the right side of the trailer is arranged in a matching way with the linear guide rail through a sliding block, and the left side of the trailer is arranged in a matching way with the sliding chute of the rectangular track through a roller; the U-shaped connecting plate is provided with a motor, and the motor is connected with the trailer through a transmission mechanism. In the technical scheme, the linear guide rail on one side is changed into the rectangular rail, the connecting slide block is replaced by the roller, and the roller rolls on the rail to replace the sliding of the slide block. Although the requirement of installation parallelism is reduced, the roller is used on one side, so that the advantages of small friction force, high working precision, strong dust-proof sealing capability, simple lubricating structure and the like of the linear guide rail are lost.

Therefore, it is desirable to provide a trailer structure capable of absorbing the parallel error of the guide rails on the premise of using a pair of linear guide rails, so as to solve the above problems in the prior art.

Disclosure of Invention

The utility model aims at providing a trailer device for CT scanning bed, through structural design, absorb the parallel error of guide rail to reduce the requirement to the guide rail depth of parallelism, make the scanning bed motion more smooth.

In order to achieve the purpose of the invention, the technical scheme adopted by the utility model is as follows: a trailer device for a CT scanning bed comprises a trailer body and a pair of linear guide rails which are arranged in parallel, wherein one linear guide rail is connected with a first sliding block and a second sliding block in a sliding mode, the other linear guide rail is connected with a third sliding block and a fourth sliding block in a sliding mode, the first sliding block is fixedly connected with the trailer body, and the second sliding block, the third sliding block and the fourth sliding block are connected with the trailer body through floating installation connecting structures respectively.

Through adopting above-mentioned structure, the trailer body is in the motion process, and when there is the error in the depth of parallelism of two linear guide rails, the distance between second slider, third slider and the fourth slider and the trailer body can change through the automatically regulated of installation connection structure that floats to the realization is to the self-adaptation of guide rail depth of parallelism, absorbs parallel error, can not take place to block and block the dead condition even. And first slider and trailer body fixed connection make the trailer have definite fixed point, can avoid the scanning bed to take place the motion drift, guarantee the stationarity of bed body operation.

In the technical scheme, the floating installation connecting structure is characterized in that slots are respectively formed in one sides, close to the trailer body, of the second sliding block, the third sliding block and the fourth sliding block, pin shafts are correspondingly arranged on the trailer body, the diameters of the slots are matched with those of the pin shafts, and one end of each pin shaft is located in each slot and can slide relative to the corresponding slot.

Or, the floating installation connection structure is that one side of the second slider, the third slider and the fourth slider, which is close to the trailer body, is respectively provided with an outward protruding pin shaft, the trailer body is respectively provided with a slot corresponding to each pin shaft, the diameters of the slots and the pin shafts are matched, and one end of the pin shaft is located in the slot and can slide relative to the slot.

In the technical scheme, a cavity is formed between the pin shaft and the bottom end of the slot, so that a space is provided for the pin shaft to slide in the slot. In order to ensure that the trailer body runs more stably and has a better buffering effect, an elastic part can be arranged in the cavity. Preferably, the elastic member is a spring.

Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages:

1. the utility model discloses a set up the floating installation connection structure and connect slider and trailer, the distance of slider and trailer body is automatically regulated along with the change of depth of parallelism, makes the trailer can adapt to the track that has the parallel error, avoids the dead condition of motion card to take place to reduce the installation accuracy requirement to parallel guide rail, can improve parallel guide rail's installation effectiveness, can guarantee the operation of scanning bed is smooth again;

2. the utility model discloses when setting up the installation connection structure that floats, remain the fixed connection between first slider and the trailer body to make the trailer drive and have the fixed point to support in the scanning bed motion process, it is more steady to operate.

Drawings

Fig. 1 is a schematic top view of a first embodiment of the present invention;

FIG. 2 is a schematic view, partly in section, at a first slide;

fig. 3 is a partial cross-sectional view at the second slider.

Wherein: 1. a trailer body; 2. a first slider; 3. a second slider; 4. a third slider; 5. a fourth slider; 6. a floating mounting connection structure; 7. a pin shaft; 8. a slot; 9. an elastic member; 10. a linear guide rail; 11. a linear guide rail.

Detailed Description

The invention will be further described with reference to the following drawings and examples:

the first embodiment is as follows: referring to fig. 1, a trailer device for a CT scanning bed comprises a trailer body 1, a pair of linear guide rails 10 and 11 arranged in parallel, wherein a first slide block 2 and a second slide block 3 are slidably connected on one linear guide rail 10, and a third slide block 4 and a fourth slide block 5 are slidably connected on the other linear guide rail 11. The first sliding block 2 is fixedly connected with the trailer body 1 (as shown in fig. 2), and the second sliding block 3, the third sliding block 4 and the fourth sliding block 5 are respectively connected with the trailer body 1 through a floating installation connecting structure 6.

Referring to fig. 3, in this embodiment, the floating installation connection structure is that a slot 8 is provided at one side of the second slider 3 close to the trailer body 1, a pin 7 is correspondingly provided on the trailer body 1, and the pin 7 may be integrally formed with the trailer body or fixed on the trailer body. The diameters of the slot 8 and the pin 7 are matched, one end of the pin 7 is positioned in the slot 8 and can slide along the length direction (x-axis direction in the figure) of the slot 8, and therefore the depth of the pin inserted into the slot is changed. A cavity is formed between the pin shaft 7 and the bottom end of the slot 8, and an elastic part 9 is arranged in the cavity. In this embodiment, the elastic member 9 is a spring.

The same floating mount connection structure may be employed for the third slider 4 and the fourth slider 5.

After adopting such structure, the trailer is at the motion in-process, when linear guide 10 and 11 have the depth of parallelism error, second slider 3, third slider 4 and fourth slider 5 are because be connected through round pin axle 7 with trailer body 1, the interval of accessible round pin axle 7 the insert depth adjusting slide and trailer body in slot 8, make the corresponding change of width of trailer in the x direction to two tracks that have the depth of parallelism error have been adapted to, and then continue to carry out linear motion and can not block.

Meanwhile, the first sliding block 2 is fixedly connected, so that the trailer drives the scanning bed to move, and the scanning bed is supported by a fixed point, so that the scanning bed runs more stably.

In the medical X-ray CT system, a trailer runs on guide rails at two sides of a bed frame of a CT scanning bed, a motor drives the trailer to move, and the trailer drives a bed board to move, so that scanning is completed in the process of moving the bed board and carrying a patient.

Claims

1. The utility model provides a trailer device for CT scanning bed, includes trailer body, a pair of parallel arrangement's linear guide rail, sliding connection has first slider and second slider on one of them linear guide rail, sliding connection has third slider and fourth slider on another linear guide rail, its characterized in that: the first sliding block is fixedly connected with the trailer body, and the second sliding block, the third sliding block and the fourth sliding block are respectively connected with the trailer body through a floating installation connecting structure.

2. The cart apparatus for a CT scanning bed of claim 1, wherein: the floating installation connecting structure is characterized in that slots are respectively formed in one sides, close to the trailer body, of the second sliding block, the third sliding block and the fourth sliding block, pin shafts are correspondingly arranged on the trailer body, the diameters of the slots are matched with those of the pin shafts, and one end of each pin shaft is located in each slot and can slide relative to the corresponding slot.

3. The cart apparatus for a CT scanning bed of claim 2, wherein: a cavity is formed between the pin shaft and the bottom end of the slot, and an elastic part is arranged in the cavity.

4. The cart apparatus for a CT scanning bed of claim 3, wherein: the elastic piece is a spring.

5. The cart apparatus for a CT scanning bed of claim 1, wherein: the floating installation connecting structure is characterized in that one sides, close to the trailer body, of the second sliding block, the third sliding block and the fourth sliding block are respectively provided with an outwards protruding pin shaft, slots are respectively arranged at positions, corresponding to the pin shafts, on the trailer body, the diameters of the slots and the pin shafts are matched, and one end of each pin shaft is located in each slot and can slide relative to the corresponding slot.

6. The cart apparatus for a CT scanning bed of claim 5, wherein: a cavity is formed between the pin shaft and the bottom end of the slot, and an elastic part is arranged in the cavity.

7. The cart apparatus for a CT scanning bed of claim 5, wherein: the elastic piece is a spring.