CN213821457U

CN213821457U - Friction transmission device for scanning frame of CT imaging system

Info

Publication number: CN213821457U
Application number: CN202021425007.5U
Authority: CN
Inventors: 王群; 庄杰; 国晋菘
Original assignee: Tiandingxing Hi Tech Suzhou Co ltd
Current assignee: Tiandingxing Hi Tech Suzhou Co ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2021-07-30
Anticipated expiration: 2030-07-20

Abstract

The utility model discloses a friction drive device for CT imaging system scans frame, including the CT casing, the inside circular scanning mouth of having seted up of CT casing, the inside cavity of having seted up of CT casing, lateral wall fixedly connected with motor before the CT casing, and the output of motor run through to the inside and fixedly connected with gear of cavity of CT casing, the inside scanning frame that is equipped with of circular scanning mouth, the lateral wall of scanning frame is located inside the cavity, scanning frame lateral wall fixedly connected with annular rack. This a friction drive device for CT imaging system scanning frame adopts the oil drip subassembly, opens the valve, and the inside oil of oil drum drips out through oil pipe, then drips on the gear, has realized the lubricated work to the gear like this, has reduced the friction work between gear and the annular rack like this, has improved the life of product.

Description

Friction transmission device for scanning frame of CT imaging system

Technical Field

The utility model relates to the field of medical technology, specifically a friction drive device for CT imaging system scanning frame.

Background

The CT imaging system installs key components such as a high-voltage generator, a bulb tube and a detector on a scanning frame, in the working process, the scanning frame needs to carry out high-precision 360-degree rotary scanning, in the rotary process, the work of angle accurate positioning, bulb tube exposure, detector data acquisition and the like is completed, X-ray projection data are obtained, the scanning frame is the most important moving component in the CT imaging system, and the central axis rotation precision and the corner repeated positioning precision play a decisive role in the imaging quality of the system.

At present, in a common CT imaging system in the market, a scanning frame mainly realizes rotary motion through gear transmission, but the transmission resistance of the existing transmission mode is large, the friction is large, and gears are not lubricated enough, so that the service life is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a friction drive device for CT imaging system scans frame to solve the problem that provides among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a friction drive device for CT imaging system scans frame, includes the CT casing, the inside circular scanning mouth of having seted up of CT casing, the inside cavity of having seted up of CT casing, lateral wall fixedly connected with motor before the CT casing, and the output of motor run through to the inside and fixedly connected with gear of cavity of CT casing, the inside scanning frame that is equipped with of circular scanning mouth, the lateral wall of scanning frame is located inside the cavity, scanning frame lateral wall fixedly connected with annular rack, annular rack and gear engagement, lateral wall is equipped with the oil drip subassembly that two symmetries set up on the CT casing.

Preferably, the oil dripping component is including the oil drum that is located CT casing top, and the upper end joint of oil drum has the apron, and the lower extreme intercommunication of oil drum is equipped with oil pipe, and inside oil pipe's lower extreme runs through to CT casing, oil pipe's lower extreme corresponds with the gear, be equipped with the valve on the oil pipe.

Preferably, the lower extreme lateral wall fixedly connected with of oil drum has the bracing piece of two symmetry settings, and the lower extreme fixedly connected with supporting shoe of bracing piece, and the lateral wall passes through bolt fixed mounting on supporting shoe and the CT casing.

Preferably, the preceding lateral wall fixedly connected with joint ring of scanning frame, annular joint groove has been seted up to the cavity inner wall, and joint ring sliding connection is inside annular joint inslot.

Preferably, a plurality of ball grooves are formed in the inner wall of the annular clamping groove, balls are arranged in the ball grooves, and the balls are in mutual contact with the clamping ring.

Preferably, the scanning frame is circular, and the inner diameter of the scanning frame is smaller than that of the circular scanning port.

Compared with the prior art, the beneficial effects of the utility model are that:

1. adopt the oil drip subassembly, open the valve, the inside oil of oil drum drips out through oil pipe, then drips on the gear, has realized the lubrication work to the gear like this, has reduced the friction work between gear and the annular rack like this, has improved the life of product.

2. Adopt ball and joint ring, the friction has been reduced in the cooperation of ball and joint ring to make the rotation of scanning frame more steady, improved the life-span of equipment use like this, it is not fragile, reduced the cost of maintenance.

Drawings

Fig. 1 is a front perspective structural view of a friction transmission device for a scanning frame of a CT imaging system according to the present invention;

FIG. 2 is a view showing a structure at A in FIG. 1;

fig. 3 is a front internal structure view of a friction transmission device for a scanning frame of a CT imaging system according to the present invention;

fig. 4 is a structural view at B of fig. 3.

In the figure: 1-CT machine housing; 2-a scanning gantry; 3-circular scanning port; 4-an electric motor; 5-an oil dripping component; 51. a cover plate; 52. an oil drum; 53. a support bar; 54. a support block; 55. an oil pipe; 56. a valve; 6-a snap ring; 7-an annular rack; 8-an annular clamping groove; 9-gear; 10-a cavity; 11. and a ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a friction transmission device for a CT imaging system scanning frame comprises a CT machine shell 1, a circular scanning port 3 is arranged inside the CT machine shell 1, a cavity 10 is arranged inside the CT machine shell 1, a motor 4 is fixedly connected to the front side wall of the CT machine shell 1, the output end of the motor 4 penetrates into the cavity 10 of the CT machine shell 1 and is fixedly connected with a gear 9, a scanning machine frame 2 is arranged inside the circular scanning port 3, the scanning machine frame 2 is in a circular ring shape, the inner diameter of the scanning machine frame 2 is smaller than that of the circular scanning port 3, a clamping ring 6 is fixedly connected to the front side wall of the scanning machine frame 2, an annular clamping groove 8 is arranged on the inner wall of the cavity 10, the clamping ring 6 is slidably connected inside the annular clamping groove 8, a plurality of ball grooves are arranged on the inner wall of the annular clamping groove 8, balls 11 are arranged inside the ball grooves, the balls 11 are mutually contacted with the clamping ring 6, the motor 4 is started, drive gear 9 and rotate to drive annular rack 7 and rotate, thereby make scanning frame 2 rotate, joint ring 6 rotates in annular joint groove 8 is inside, and ball 11 and joint ring 6 direct contact roll friction like this has reduced frictional force, makes the life of product obtain the improvement like this.

The outer side wall of the scanning frame 2 is positioned inside the cavity 10, the outer side wall of the scanning frame 2 is fixedly connected with an annular rack 7, the annular rack 7 is meshed with a gear 9, the upper side wall of the CT shell 1 is provided with two symmetrically-arranged oil dripping assemblies 5, each oil dripping assembly 5 comprises an oil drum 52 positioned above the CT shell 1, the upper end of each oil drum 52 is connected with a cover plate 51 in a clamping manner, the cover plates 51 are arranged to realize sealing work on the oil drums 52 and prevent volatilization of lubricating oil, the oil dripping assemblies are detachably connected, the lower end of each oil drum 52 is communicated with an oil pipe 55, the lower end of each oil pipe 55 penetrates into the CT shell 1, the lower end of each oil pipe 55 corresponds to the gear 9, each oil pipe 55 is provided with a valve 56, the side wall of the lower end of each oil drum 52 is fixedly connected with two symmetrically-arranged support rods 53, the lower ends of the support rods 53 are fixedly connected with support blocks 54, and the support blocks 54 are fixedly installed with the upper side wall of the CT shell 1 through bolts, by opening the valve 56, the oil inside the oil drum 52 drips out through the oil pipe 55 and then drips on the gear 9, so that the lubrication of the gear 9 is realized, the friction between the gear 9 and the annular rack 7 is reduced, and the service life of the product is prolonged.

The working principle is as follows: when in use, the starting motor 4 drives the gear 9 to rotate, thereby driving the annular rack 7 to rotate, thereby enabling the scanning frame 2 to rotate, the ball 11 is in contact with the clamping ring 6, the friction force is reduced by rolling friction, the service life of the product is prolonged, then the valve 56 is opened, the oil inside the oil drum 52 drips out through the oil pipe 55, and then drips on the gear 9, so that the lubrication work of the gear 9 is realized, the friction work between the gear 9 and the annular rack 7 is reduced, and the service life of the product is prolonged.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A friction drive device for a scanning frame of a CT imaging system comprises a CT shell (1), and is characterized in that: circular scanning mouth (3) have been seted up to CT casing body (1) inside, cavity (10) have been seted up to CT casing body (1) inside, lateral wall fixedly connected with motor (4) before CT casing body (1), and the output of motor (4) runs through to cavity (10) inside and fixedly connected with gear (9) of CT casing body (1), circular scanning mouth (3) inside is equipped with scanning frame (2), the lateral wall of scanning frame (2) is located inside cavity (10), scanning frame (2) lateral wall fixedly connected with ring rack (7), ring rack (7) and gear (9) meshing, lateral wall is equipped with two oil drip subassembly (5) that the symmetry set up on CT casing body (1).

2. A friction drive for a CT imaging system scanning gantry according to claim 1, wherein: oil dripping subassembly (5) is including oil drum (52) that are located CT casing body (1) top, and the upper end joint of oil drum (52) has apron (51), and the lower extreme intercommunication of oil drum (52) is equipped with oil pipe (55), and the lower extreme of oil pipe (55) runs through to CT casing body (1) inside, the lower extreme and gear (9) of oil pipe (55) correspond, be equipped with valve (56) on oil pipe (55).

3. A friction drive for a CT imaging system scanning gantry according to claim 2, wherein: the support rod (53) that two symmetries set up is connected with to the lower extreme lateral wall fixedly of oil drum (52), and the lower extreme fixedly connected with supporting shoe (54) of supporting shoe (53), and the side wall passes through bolt fixed mounting on supporting shoe (54) and CT casing (1).

4. A friction drive for a CT imaging system scanning gantry according to claim 1, wherein: scanning frame's (2) preceding lateral wall fixedly connected with joint ring (6), annular joint groove (8) have been seted up to cavity (10) inner wall, and joint ring (6) sliding connection is inside annular joint groove (8).

5. The friction drive device of claim 4, wherein: a plurality of ball grooves have been seted up to annular joint groove (8) inner wall, ball groove internally mounted has ball (11), ball (11) and joint ring (6) contact each other.

6. A friction drive for a CT imaging system scanning gantry according to claim 1, wherein: the scanning frame (2) is annular, and the inner diameter of the scanning frame (2) is smaller than that of the circular scanning port (3).