CN110934607B

CN110934607B - Obstacle detection mechanism, side rail structure, scanning bed and CT equipment

Info

Publication number: CN110934607B
Application number: CN201911061398.9A
Authority: CN
Inventors: 于军; 胡杨; 张勇
Original assignee: Neusoft Medical Systems Co Ltd
Current assignee: Neusoft Medical Systems Co Ltd
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2023-05-02
Anticipated expiration: 2039-11-01
Also published as: CN110934607A

Abstract

The invention relates to the technical field of medical equipment, and particularly provides an obstacle detection mechanism, a side rail structure, a scanning bed and CT equipment. The obstacle detection mechanism is suitable for contact detection of the sports equipment and the obstacle in the sports process, and comprises: a linkage assembly adapted to be disposed on the exercise apparatus, having axially opposed first and second ends; a contact portion provided at the first end of the link assembly, adapted to contact an obstacle during movement of the movement apparatus; the connecting rod assembly moves under the action of the action force of the obstacle; and the sensing assembly comprises a sensor and a trigger piece, the trigger piece is fixedly arranged at the second end of the connecting rod assembly, and the sensor senses a trigger signal in the movement process of the trigger piece. The detection mechanism provided by the invention effectively solves the problem that the movement equipment is damaged by collision and extrusion of obstacles in the movement process.

Description

Obstacle detection mechanism, side rail structure, scanning bed and CT equipment

Technical Field

The invention relates to the technical field of medical equipment, in particular to an obstacle detection mechanism, a side rail structure, a scanning bed and CT equipment.

Background

Along with the development of science and technology, CT (Computed Tomography, electronic computer tomography) machines are increasingly widely used in medical clinic, which scan a section around a human body by using precisely collimated rays, sound waves and the like and a detector with extremely high sensitivity, and have the characteristics of fast scanning time, clear imaging and the like, and the CT machine at the present stage has become one of the most important medical equipment in hospitals. Scanning beds are also becoming increasingly used as an important component of CT machines.

Today, not only is a scanning bed used as a support for a tested person, but a plurality of auxiliary mechanisms are added to the scanning bed for meeting the convenience and the versatility of the scanning bed. For example: for the testee with partial actions incapable of self-care, firstly, the testee needs to be conveyed to the scanning bed side by a stretcher and the like, and secondly, the scanning bed needs to be adjusted in height, and the bed body is lifted to be flush with the stretcher, so that a patient can be conveniently transferred from the stretcher to the scanning bed. However, in actual operation, the condition of extruding the stretcher often occurs in the lifting process of the scanning bed, so that the side rail of the bed body or the bed cover and the like are extruded and damaged, and the use of the scanning bed is further affected.

Disclosure of Invention

The invention provides an obstacle detection mechanism capable of detecting obstacle extrusion, which aims to solve the technical problem that the existing movement equipment is easy to be extruded and damaged by the obstacle during lifting.

Meanwhile, in order to solve the technical problem that the side rail is easy to be extruded and damaged by the obstacle when the existing sports equipment is lifted, the invention provides a side rail structure capable of preventing the side rail from being extruded and damaged by the obstacle.

Furthermore, in order to solve the technical problem that the existing scanning bed is easy to be extruded and damaged by obstacles during lifting, the invention provides the scanning bed and CT equipment with the scanning bed.

In a first aspect, the present invention provides an obstacle detection mechanism adapted for contact detection of a moving device with an obstacle during movement, the detection mechanism comprising:

a linkage assembly adapted to be disposed on the exercise apparatus, having axially opposed first and second ends;

a contact portion provided at the first end of the link assembly, adapted to contact an obstacle during movement of the movement apparatus; the connecting rod assembly moves under the action of the action force of the obstacle; and

the sensing assembly comprises a sensor and a trigger piece, wherein the trigger piece is fixedly arranged at the second end of the connecting rod assembly, and the sensor senses a trigger signal in the movement process of the trigger piece.

In some embodiments, the obstacle detection mechanism further comprises:

the elastic resetting assembly is arranged on the connecting rod assembly and provides elastic force for the connecting rod assembly to overcome the barrier acting force;

in some embodiments, the elastic return assembly comprises:

the connecting rod assembly penetrates through the floating block through the shaft hole and is fixedly connected with the floating block;

the elastic piece is arranged on one side end face of the floating block, one end of the elastic piece is abutted against the floating block, and the other end of the elastic piece is suitable for being abutted against the support; when the connecting rod assembly moves under the action of the barrier acting force, at least one elastic piece provides an elastic force for overcoming the barrier acting force.

In some embodiments, the detection mechanism further comprises a fixing sleeve, the fixing sleeve is suitable for being fixedly arranged on the movement equipment, a through hole for the connecting rod assembly to pass through is formed in the middle of the fixing sleeve, and the diameter of the through hole is larger than that of the connecting rod assembly; the floating block is arranged on the fixed sleeve, and one end of the elastic piece is abutted against one side surface of the fixed sleeve.

In some embodiments, the elastic restoring assembly comprises an elastic member;

the end face of one side of the floating block is provided with a boss, the boss and the elastic piece are respectively arranged on two sides of the radial direction of the shaft hole, and the boss and one end of the elastic piece are abutted to one side face of the fixing sleeve.

In some embodiments, the elastic member is a spring plunger, the slider is provided with a mounting hole, and the spring plunger is fixedly arranged in the mounting hole.

In some embodiments, the fixing sleeve is provided with lugs on two radial sides of the through hole, the slider is disposed between the two lugs and is rotationally connected with the two lugs, and the axis of rotation of the slider is perpendicular to the connection line between the mounting hole and the center of the shaft hole.

In some embodiments, the sensor comprises a photosensitive sensor or a micro-touch switch; the trigger piece comprises a baffle plate which is fixedly arranged at the shaft end of the second end of the connecting rod assembly.

In a second aspect, the present invention provides a side rail structure comprising:

a side rail; and

the detection mechanism of any one of the embodiments of the first aspect, the first end of the linkage assembly being fixedly connected to the side rail, the side rail forming the contact, the detection mechanism acting as a body support structure for the side rail.

In a third aspect, the present invention provides a scanning bed comprising:

a body; and

the detection mechanism according to any one of the first aspect, provided to the main body.

In some embodiments, the body comprises a bed and side rails connected to both sides of the bed by at least one of the detection mechanisms; the sensor is fixedly arranged on the bed body; the side rail is fixedly connected to an axial end of the first end of the connecting rod assembly to form the contact portion.

In a fourth aspect, the present invention provides a CT apparatus comprising a scanning bed according to any of the embodiments of the third aspect.

The technical scheme of the invention has the following beneficial effects:

1) The obstacle detection mechanism provided by the invention is suitable for contact detection of the moving equipment and an obstacle in the moving process, and comprises a connecting rod assembly, wherein the connecting rod assembly is suitable for being arranged on the moving equipment and is provided with a first end and a second end which are axially opposite, the first end of the connecting rod assembly is provided with a contact part, so that the connecting rod assembly is contacted with the obstacle in the moving process of the moving equipment, and the connecting rod assembly moves under the action of the force of the obstacle. The sensing component comprises a sensor and a trigger piece, wherein the trigger piece is fixedly arranged at the second end of the connecting rod component, so that the sensor senses a trigger signal when the trigger piece moves along with the movement of the connecting rod component. When the contact part is contacted with the obstacle, the connecting rod assembly is extruded by the obstacle to generate motion, so that the sensor senses a trigger signal, the abnormal state of the extrusion of the obstacle is effectively detected, and the damage to the detected equipment is avoided.

2) The obstacle detection mechanism provided by the invention further comprises an elastic reset component which is arranged on the connecting rod component, so that reset elastic force is provided when the connecting rod component moves, and after the obstacle is relieved, the elastic reset component drives the detection mechanism to automatically reset, and the abnormal state is canceled.

3) The invention provides an obstacle detection mechanism, which comprises a floating block and at least one elastic piece, wherein the floating block is provided with a through shaft hole, a connecting rod assembly penetrates through the floating block through the shaft hole and is fixedly connected with the floating block, the elastic piece is arranged on one side end face of the floating block, one end of the elastic piece is abutted against the floating block, the other end of the elastic piece is suitable for being abutted against a support, the elastic piece provides a space for the floating block to move along with the connecting rod assembly, when the floating block moves towards a certain direction under the action force of an obstacle, the elastic piece at the position is in a compressed state, and after the obstacle is eliminated, the elastic force drives the floating block to reset.

4) According to the obstacle detection mechanism provided by the invention, the lugs are respectively arranged on two sides of the radial direction of the through hole on one side surface of the fixed sleeve, the floating block is arranged between the two lugs and is respectively connected with the two lugs in a rotating way, and the rotating axis of the floating block is perpendicular to the connecting line of the elastic piece and the center of the shaft hole. Therefore, the fixed sleeve provides a rotating path for the movement of the floating block, and whether the movement equipment is blocked and extruded by the barrier in the lifting process is effectively detected.

5) The side rail structure provided by the invention comprises the side rail and the detection mechanism, wherein the first end of the connecting rod assembly is fixedly connected with the side rail, the side rail forms a contact part, and the detection mechanism is used as a main body supporting structure of the side rail, so that whether the side rail is blocked and extruded by an obstacle in the movement process of the movement equipment is effectively detected by the detection mechanism, and the side rail is prevented from being damaged.

6) The scanning bed and the CT equipment provided by the invention comprise the detection mechanism, so that the scanning bed has all the beneficial effects, and the scanning bed is prevented from being damaged by blocking extrusion of obstacles in the lifting process.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of a scanning bed in accordance with some embodiments of the invention.

Fig. 2 is a schematic side rail view of a scanning bed in accordance with some embodiments of the invention.

Fig. 3 is a partial enlarged view of the obstacle detecting mechanism in fig. 2.

Fig. 4 is an exploded view of the structure of an obstacle detection mechanism in accordance with some embodiments of the invention.

Fig. 5 is a cross-sectional view of an obstacle detection mechanism in accordance with some embodiments of the invention.

Fig. 6 is an enlarged view of a portion of the elastic reset assembly of the embodiment of fig. 5.

Fig. 7 is an enlarged partial cross-sectional view of an obstacle detection mechanism in accordance with further embodiments of the invention.

Reference numerals illustrate:

11-side rail struts; 12-connecting rods; 21-a slider; 211-boss; 212-shaft holes; 221-spring plungers; 221 a-ball head; 221 b-a spring; 222-a plunger nut; 3-fixing the sleeve; 31-via holes; 32-lugs; 33-rotating shaft; 41-an inductor; 42-triggering piece; 51-a fixed block; 52-fixing bolts; 100-bed body; 101-side rails; 102-bedspread; 103-bed board; 200-detecting mechanism; a-a first end; b-a second end.

Detailed Description

The following description of the embodiments of the present invention will be made more apparent and fully hereinafter with reference to the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention. In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.

The obstacle detection mechanism provided by the invention can be used for detecting contact between the movement equipment and an obstacle in the movement process, for example: collision detection between the scanning bed and the stretcher vehicle in the lifting process, and the like. In addition, taking a CT apparatus as an example, in order to prevent a scanning bed from colliding with a stretcher during a lifting process, an anti-collision ground rail is generally installed on the ground at two sides of the scanning bed, that is, the stretcher is prevented from being close to the scanning bed by the ground rail, so that a larger neutral position is formed between the stretcher and the scanning bed. For the testee incapable of self-care of action, the general body is greatly damaged, and in the process of transferring the stretcher to the scanning bed, the testee needs to be lifted to move due to the large gap between the stretcher and the scanning bed, so that secondary damage to the testee is easily caused. And normal patients may also be at risk of tripping over the floor rail when they are on the bed. Therefore, the existing solution for preventing extrusion in the lifting process of the scanning bed has a great potential safety hazard, and the requirement is difficult to meet.

Based on the above, the present invention provides an obstacle detection mechanism suitable for detecting contact between a moving device such as a scanning bed and an obstacle during movement. The detection mechanism includes a linkage assembly mountable on a motion device, such as a scanning bed, having axially opposed first and second ends. For example, the middle portion of the linkage assembly may be mounted to the scanning bed with the first and second ends extending outwardly and inwardly of the scanning bed, respectively.

The first end of the link assembly is provided with a contact portion, which may be, for example, a contact surface formed at an axial end of the link assembly, or may be, for example, an assembly mounted at an axial end of the link assembly, or may be a detection body, such as a scanning bed side rail, connected to the link assembly, to which the present invention is not limited. In the movement process of the movement equipment, the contact part is firstly contacted with the obstacle, so that the connecting rod assembly is driven to move under the action of the action force of the obstacle.

The second end of the connecting rod assembly is provided with the sensing assembly, the sensing assembly comprises a sensor and a trigger piece, the trigger piece is fixedly arranged at the second end of the connecting rod assembly, and when the first end of the connecting rod assembly is driven to rotate by the action force of an obstacle, the trigger piece moves along with the second end, so that the sensor senses a trigger signal in the movement process of the trigger piece. For example, the sensor may employ a sensor of a related function, and the trigger member moves to trigger the sensing signal of the sensor.

According to the obstacle detection mechanism provided by the invention, when the contact part is collided and extruded by an obstacle, the connecting rod assembly moves under the action of the obstacle, so that the sensor detects the trigger signal, and the equipment can be controlled or reminded to be abnormal according to the trigger signal, thereby effectively preventing the equipment from being damaged due to the continuous movement of the movement equipment. On the other hand, the obstacle detection mechanism provided by the invention can be arranged on the movement equipment, such as a scanning bed, so that the obstacle detection in the lifting process of the scanning bed is realized, an anti-collision ground rail is not required, a tested person can conveniently use the scanning bed, and the risk of secondary injury is reduced.

Fig. 1 to 6 show a specific embodiment of the obstacle detecting mechanism according to the present invention, in which a scanning bed of a CT apparatus is taken as an example of a moving apparatus for convenience of explanation. However, it will be appreciated by those skilled in the art that the movement apparatus is not limited to the scanning bed disclosed in this embodiment, but may be any other apparatus suitable for implementation, and the invention is not limited in this regard.

Referring to fig. 1, the structure of the scanning bed in the present embodiment is shown in fig. 1. The scanning bed comprises a bed body 100, a lifting structure arranged below the bed body 100 and a conveying structure arranged in the bed body 100. The lifting structure is used for realizing the height adjustment of the scanning bed, and any structure with lifting function in the related art, such as hydraulic lifting, an electric mechanical arm and the like, are adopted, and are not repeated here. The conveying structure realizes the movement of the bed board 103 in the horizontal direction, so that the human body is driven to enter the scanner for scanning, and the conveying structure can adopt any structure with a conveying function in the related art, such as a motor conveying belt and the like, and is not described herein.

As shown in fig. 1, the bed covers 102 are arranged on two sides of the scanning bed, and the bed covers 102 shield the mechanical structures on two sides, so that on one hand, a user is prevented from touching the transmission structure to be injured, and meanwhile, the transmission structure is protected from being damaged; on the other hand, the whole scanning bed is more attractive. The side rails 101 are arranged on two sides of the bed body 100, and the side rails 101 extend out of the bed body 100 in the horizontal direction, so that the bed body can be crashproof, and the bed cover 102 can be supported to improve stability. Since the side rail 101 extends out of the bed body 100, after the stretcher is close to the bed body 100, the bed body 100 is easy to squeeze the stretcher in the lifting process, if the stretcher and the side rail 101 are continuously lifted, damage is caused to the stretcher and the side rail 101, and potential safety hazard is brought.

The connection structure of the side rail 101 and the bed 100 is shown in fig. 2 and 3. In the present embodiment, the obstacle detecting mechanism 200 is connected to the bed 100 through the obstacle detecting mechanism 200 as a main body supporting structure of the side rail 101, that is, the front, middle and rear portions of the side rail 101. Referring to fig. 3, the side rails 101 are installed at both sides of the bed 100 by the detection mechanism 200.

In the present embodiment, the obstacle detecting mechanism 200 may include a link assembly, a fixing bush 3, an elastic restoring assembly, a contact portion, a sensing assembly, and the like. As shown in fig. 4, the fixing sleeve 3 may be fixedly installed on the side of the bed body 100 by, for example, screws, and a through hole 31 is formed in the middle of the fixing sleeve 3, and the link assembly penetrates the fixing sleeve 3 through the through hole 31. The diameter of the via hole 31 is larger than the diameter of the link assembly, so that there is a clearance gap between the link assembly at the location of the via hole 31 and the inside of the via hole 31 after the link assembly is assembled.

The link assembly penetrates through the fixing sleeve 3, and for convenience of description, one end of the link assembly extending out of the bed body 100 is defined as a first end a, and one end of the link assembly located in the bed body 100 is defined as a second end b. The first end a of the linkage assembly is fixedly connected to the side rail 101 and the second end b is provided with a sensing assembly. In this embodiment, the side rail 101 is mounted at the first end a of the link assembly, and protrudes out of the bed, so that the side rail 101 is used as a contact portion for the detection mechanism to contact with the obstacle, for example, contact and press with the stretcher when the bed is lifted, and the upper and lower end surfaces of the side rail 101 are directly contacted with the stretcher to form the contact portion. Specifically, as shown in fig. 4, the link assembly includes a side rail stay 11 and a connecting rod 12, one end of the side rail stay 11 is fixedly connected to a side rail 101, for example, by a key pin or the like, and the other end is fixedly connected to one end of the connecting rod 12 using, for example, a screw structure.

The elastic resetting assembly comprises a floating block 21 and an elastic piece, a through shaft hole 212 is formed in the middle of the floating block 21, and the connecting rod assembly penetrates through the floating block through the shaft hole 212. With continued reference to fig. 4, the slider 21 is disposed between the connecting rod 12 and the side rail 11, and the connecting end of the connecting rod 12 and the side rail 11 is provided with a shoulder structure having a diameter larger than that of the shaft hole 212, so that the slider 21 is axially restrained after the connecting rod 12 and the side rail 11 are assembled. The position of the connecting rod 12 matched with the shaft hole 212 of the slider 21 is provided with a limiting plane, and the shaft hole 212 is correspondingly provided with a limiting plane matched with a shape, so that when the connecting rod 12 penetrates through the shaft hole 212, the slider 21 is circumferentially limited, and the slider 21 is prevented from rotating around the axis of the connecting rod 12.

In the present embodiment, the assembly structure of the elastic restoring member, the link assembly, and the fixing sleeve 3 is shown in fig. 5 and 6. Referring to fig. 5 and 6, the slider 21 is mounted between the connecting rod 12 and the side rail stay 11, the side rail stay 11 and the connecting rod 12 are axially fixedly connected, and shoulders on both sides of the slider 21 are axially positioned. The diameter of the shaft shoulder position of the connecting rod 12 is smaller than the diameter of the through hole 31 of the fixed sleeve 3, so that a movable gap is formed between the connecting rod 12 and the inner wall of the through hole 31.

With continued reference to fig. 4, the bottom of the slider 21 is provided with a boss 211 structure, and the elastic member is disposed on a side opposite to the boss 211 in the radial direction of the shaft hole 212, that is, the boss 211 and the elastic member are disposed on both radial sides of the shaft hole. As shown in fig. 6, after the slider 21 and the fixed bush 3 are assembled, the boss 211 abuts against one side surface of the fixed bush 3, and since the boss 211 protrudes from the side surface of the slider 21, a clearance is formed between the slider 21 and the fixed bush 3. One end of the elastic member is abutted against the fixed sleeve 3, and the other end is abutted against the floating block 21, namely when the elastic member is compressed, the upper part of the floating block 21 can approach the fixed sleeve 3, and after the external force disappears, the elastic force of the elastic member drives the floating block 21 to reset.

In the present embodiment, the spring member is a spring plunger 221, and the spring plunger 221 includes a housing, and a ball 221a and a spring 221b provided in the housing. The floating block 21 is provided with a penetrating mounting hole, the shell of the spring plunger 221 is provided with external threads, and the mounting hole is provided with internal threads, so that the spring plunger 221 is fixedly mounted in the mounting hole through threads, and meanwhile, the plunger nut 222 is axially fixed to the spring plunger 221. As shown in fig. 6, the ball 221a of the assembled spring plunger 221 abuts against the side wall of the fixed sleeve 3, and one end of the spring 221b abuts against the ball 221a and the other end abuts against the inner wall of the housing. As can be seen from the figure, since the ball 221a is in contact with the side wall of the fixed sleeve 3, the expansion and contraction of the ball 221a is smoother and more stable when the spring plunger 221 is compressed.

The present embodiment is given as a preferred example, and does not limit the present invention. For example, the assembly of the spring plunger and the floating block can also be performed in other manners, for example, a blind hole is formed in the mounting hole, and the spring plunger is mounted in the blind hole; for another example, other forms of elastic members, such as compression springs, may be used for the spring plungers; the purpose of the boss 211 is to create a clearance between the slider 21 and the stationary sleeve 3, which may be any form of protruding structure, and may be located at any suitable location for implementation, for example. The invention is not limited in any way in this regard.

Further, in this embodiment, considering the practical application scenario of the scan bed, the situations where collision and extrusion may occur mainly are: the bed body is extruded with the stretcher vehicle in the descending process, so the embodiment is implemented aiming at the scene. Specifically, when the side rail 101 is pressed against the stretcher, the side rail 101 is tilted upward due to the downward force of the stretcher, i.e., the first end a of the link assembly is tilted upward and the corresponding second end b is tilted downward. It is understood that the slider 21 is slightly rotated counterclockwise in the direction shown in fig. 6. Therefore, in the present embodiment, the positions where the spring plungers 221 and the bosses 211 are provided are located on the upper and lower sides of the slider 21, respectively, thereby providing an upper compression active space.

With continued reference to fig. 4, in the present embodiment, the left and right sides of the side surface of the fixed sleeve 3 that cooperates with the slider 21 are respectively provided with lugs 32, and the inner side walls of the lugs 32 are formed to be a limiting plane structure. The slider 21 is disposed between the two lugs 32, and corresponding limiting planes are disposed on the left and right sides of the slider 21, so that when the slider 21 is mounted between the two lugs 32, both side walls of the slider 21 respectively abut against the limiting planes of the two lugs 32 to limit the movement of the slider 21 in the circumferential direction.

In this embodiment, the left and right sides of the slider 21 are respectively connected with two lugs 32 in a rotating manner, i.e., assembly holes are formed on the side walls of the lugs 32 and the slider 21, and the slider 21 can rotate around the rotation shaft by being sequentially inserted into the two assembly holes through the rotation shaft 33. Based on the above, since the rotation direction of the slider 21 is relatively fixed in the use situation of the scanning bed, the axis direction of the rotating shaft 33 is perpendicular to the connecting line between the mounting hole and the center of the shaft hole, so that the spring plunger 221 is ensured to be located at the symmetrical center line of the slider 21, and the provided elastic force is more stable.

The sensing assembly is disposed at the second end b of the linkage assembly, and includes a sensor 41 and a trigger 42. As shown in fig. 4, in the present embodiment, the sensor 41 is a photoelectric sensor, and the trigger 42 is a shutter. The photoelectric sensor is fixedly installed on the bed body 100, and the sensing end of the sensor detects whether the optical signal is blocked. The separation blade fixed mounting is at the free end of connecting rod 12, and the axle head of connecting rod 12 is equipped with fixed block 51, and connecting hole has been seted up to fixed block 51 and separation blade, and fixing bolt 52 passes the connecting hole of separation blade and fixed block 51 in proper order, fixes separation blade and fixed block 51 spiro union at the axle head of connecting rod 12.

It should be noted that, in some embodiments, the sensor may also use any other sensor or micro switch, and the trigger may also be a different trigger according to the trigger of the sensor, which is not limited in the present invention.

The structure of the detection mechanism in the present embodiment is described above, and the operation principle of the detection mechanism is described below with reference to fig. 5 and 6.

When the detection mechanism is assembled, the fixed sleeve 3 is fixedly arranged on the bed body through bolts, the spring plunger 221 is in screwed connection with the mounting hole of the floating block 21, and the floating block 21 is rotatably connected to the fixed sleeve 3 through the rotating shaft 33. One end of the side rail stay 11 is fixedly connected to the side rail 101, and the trigger member 42 is mounted to one end of the connecting rod 12 by the fixing bolt 52. The free end of the connecting rod 12 is fixedly mounted with the free end of the side rail stay 11 through the fixing bush 3 and the slider 21, completing the assembly.

When the side rail 101 is pressed without an obstacle, the connecting rod assembly keeps the state shown in fig. 5, the trigger piece 42 is positioned outside the photoelectric sensor, the photoelectric sensor continuously detects the optical signal, and the working condition is normal. When the side rail 101 is pressed during the lowering process, the obstacle applies an upward force to the side rail 101, and because the side rail 101, the link assembly and the slider 21 are all rigidly connected, the link assembly drives the slider 21 to rotate counterclockwise in the position shown in fig. 6, and the ball 221a of the spring plunger 221 compresses the spring 221b. The second end of the linkage assembly moves downward and the trigger 42 blocks the sensing end of the photosensor downward so that the sensor detects an abnormal signal and sends the signal to the control end. The control end controls the equipment to stop moving or give an alarm and the like according to the signals, so that the equipment is prevented from continuously descending to cause damage to the side rail.

After the obstacle is released, since the side rail 101 is no longer subjected to the force of the obstacle, the elastic force of the spring 221b of the spring plunger 221 pushes the slider 21 to return, and the link assembly is rotated clockwise in the direction shown in fig. 5 to return. After the reset of the connecting rod assembly is completed, the triggering piece 42 does not block the sensing end of the photoelectric sensor any more, and the abnormal signal is relieved.

The structure and the operation principle of the obstacle detection mechanism in the present embodiment are described above, and the present invention may be embodied in other alternative embodiments in addition to the above-described embodiment.

In an alternative embodiment, the difference from the above embodiment is that the resilient return assembly is structured as shown in fig. 7. In this embodiment, elastic members, such as spring plungers 221, are provided at both upper and lower ends of the slider 21, and the spring plungers 221 are symmetrically disposed. In this embodiment, the return elastic assembly can provide elastic force in two directions, that is, an obstacle can be detected in the lifting of the side rail. The principle of operation of the side rail lowering process is the same as in the above embodiment and will not be described again. When the side rail rises, the side rail is extruded by the obstacle, for example, the side rail is blocked by the stretcher to rise, and is subjected to downward acting force of the stretcher, so that the spring plunger 221 positioned below is compressed, the trigger piece positioned at the second end of the connecting rod assembly rotates upwards, and a corresponding sensor can be arranged above the trigger piece at the same time, thereby realizing obstacle detection in the rising process.

In another alternative embodiment, the elastic member may further be disposed on the slider 21 around the shaft hole 212, and the slider 21 is removed from the rotational connection with the fixed sleeve 3, so that the slider may implement multiple degrees of freedom of movement, and multiple direction sensors are disposed at the second end of the connecting rod assembly for detecting the impact of the obstacle in multiple stress directions on the side rail. Those skilled in the art may implement the embodiment in combination with the above embodiment, and the repetition will not be repeated.

In yet another alternative embodiment, the above-described embodiment is merely for explaining the obstacle detecting mechanism of the present invention, and does not limit the present invention. The obstacle detection mechanism provided by the invention is not limited to the side rail of the scanning bed, and can be used for any other motion equipment suitable for implementation, such as the C-shaped arm of a contrast device; and can be applied to the detection of obstacles at any other part of the scanning bed (such as a bed board).

In a further alternative embodiment, the difference with respect to the above-described embodiments is that the resilient return assembly may be dispensed with, i.e. no resilient return is employed. When the side rail encounters an obstacle in the descending process, the connecting rod assembly rotates, and the sensor is triggered. When the obstacle is eliminated, the self gravity of the side rail is reliably utilized to drive the connecting rod assembly to reset. This embodiment is applicable to the moment of side rail side and is greater than the moment of inductor side far away, and the scheme that adopts elastic reset above-mentioned reset stability is relatively poor.

In yet another alternative embodiment, the detection mechanism may be different from the above embodiment in that the fixing sleeve 3 is not provided, for example, a via hole is provided in the frame of the scanning bed, and the link assembly penetrates the frame of the scanning bed through the via hole, and the diameter of the via hole is larger than that of the link assembly, so that the link assembly can be ensured to move under the action of the obstacle. Meanwhile, in all the above embodiments, an elastic material or an elastic structure may be further disposed in the movable gap between the via hole and the link assembly, for example, a rubber ring is disposed between the via hole and the link assembly, and when the first end of the link assembly is pressed by the action of the obstacle, the link assembly compresses the rubber ring, so that the link assembly rotates. Because the clearance has between via hole and the link assembly, link assembly can collide with the wall of via hole when receiving the extrusion of barrier to rotate, through setting up elastic material or elastic structure, can effectively avoid the collision, improves life and use experience.

From the above, it can be seen that the obstacle detection mechanism in this embodiment can be when the contact receives the obstacle collision extrusion, and link assembly receives the obstacle effort and takes place to move to the sensor detects trigger signal, and then can control equipment or remind unusual according to trigger signal, effectively prevent that sports equipment from continuing to move and causing equipment damage, adopts elasticity to reset simultaneously, stability is better. On the other hand, the obstacle detection mechanism provided by the invention can be arranged on the movement equipment, such as a scanning bed, so that the obstacle detection in the lifting process of the scanning bed is realized, an anti-collision ground rail is not required, a tested person can conveniently use the scanning bed, and the risk of secondary injury is reduced.

In a second aspect, the present invention also provides a side rail structure, referring to fig. 2 and 3, comprising a side rail and a detecting mechanism 200 according to any of the above embodiments, wherein the first end a of the link assembly is fixedly connected to the side rail, and the side rail is connected to the apparatus main body through the detecting mechanism 200, so as to detect whether the side rail is collided and pressed by an obstacle during movement of the apparatus.

It should be noted that the side rail structure provided by the present invention is not limited to the scanner bed, but may be any other protective rail suitable for the exercise equipment. By detecting the obstacle on the protective side rail, the equipment is prevented from being damaged by collision, extrusion and the like of the obstacle in the moving process.

In a third aspect, the present invention also provides a scanning bed, as may be seen in figures 1 to 3. The scanning bed comprises a body, wherein the body comprises a bed body 100, a lifting structure arranged below the bed body 100 and a conveying structure arranged in the bed body 100. Side rails 101 are provided on both sides of the bed 100, the side rails 101 extend out of the bed 100 in the horizontal direction, and the side rails 101 are connected to the bed 100 by the obstacle detecting mechanism 200 according to any of the above embodiments. For example, in the embodiment shown in fig. 2, the front, middle and rear portions of the side rail 101 are all connected to the bed 100 by an obstacle detecting mechanism 200.

It should be noted that, in some embodiments, the obstacle detecting mechanism 200 may be only used as a connection structure, and it is not necessary that all detecting mechanisms 200 are provided with sensors. For example, in the present embodiment, only the detection mechanism 200 located at the rear end may be provided with the sensor, and the detection mechanism 200 at the front and middle portions may be used as the connection structure. That is, in the plurality of connection structures of the side rails, at least one inductor is ensured.

In addition, in some embodiments, the detection mechanism 200 is not limited to detecting an obstacle on the side rail of the scanning bed, and may be disposed at the position of the bed plate 103, detect the bed plate 103, and so on. The invention is not limited in this regard. Can be realized by those skilled in the art based on the above disclosure, and will not be described in detail herein.

In a fourth aspect, the present invention provides a CT apparatus comprising a scanning bed according to any of the embodiments described above.

According to the scanning bed and the CT equipment provided by the invention, when the contact part is collided and extruded by the obstacle, the connecting rod assembly moves under the action of the obstacle, so that the sensor detects the trigger signal, and further the scanning bed can be controlled to stop or remind of abnormality according to the trigger signal, and the equipment damage caused by the continuous movement of the scanning bed is effectively prevented. On the other hand, no anti-collision ground rail is needed, so that a tested person can conveniently use the scanning bed, and the risk of secondary injury is reduced

It should be apparent that the above embodiments are merely examples for clarity of illustration and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.

Claims

1. An obstacle detection mechanism adapted for contact detection of a moving device with an obstacle during movement, the detection mechanism comprising:

the sensing assembly comprises a sensor (41) and a trigger piece (42), wherein the trigger piece (42) is fixedly arranged at the second end of the connecting rod assembly, and the sensor (41) senses a trigger signal in the movement process of the trigger piece (42);

the elastic reset assembly includes:

the connecting rod assembly penetrates through the floating block (21) through the shaft hole (212) and is fixedly connected with the floating block (21);

at least one elastic piece, locate on one side end surface of the said floating block (21), one end of the said elastic piece is abutted against the said floating block (21), another end is suitable for being abutted against the support; when the connecting rod assembly moves under the action of the barrier acting force, at least one elastic piece provides an elastic force for overcoming the barrier acting force;

the detection mechanism further comprises a fixing sleeve (3), the fixing sleeve (3) is suitable for being fixedly arranged on the movement equipment, a through hole (31) for the connecting rod assembly to pass through is formed in the middle of the fixing sleeve, and the diameter of the through hole (31) is larger than that of the connecting rod assembly; the floating block (21) is arranged on the fixed sleeve (3), and one end of the elastic piece is abutted against one side surface of the fixed sleeve (3).

2. The obstacle detection mechanism as claimed in claim 1, wherein,

the elastic reset assembly comprises an elastic piece;

the end face of one side of the floating block (21) is provided with a boss (211), the boss (211) and the elastic piece are respectively arranged on two sides of the radial direction of the shaft hole (212), and one end of the boss (211) and one end of the elastic piece are respectively abutted to one side face of the fixed sleeve (3).

3. The obstacle detecting mechanism according to claim 2, wherein,

the elastic piece is a spring plunger (221), the floating block (21) is provided with a mounting hole, and the spring plunger (221) is fixedly arranged in the mounting hole.

4. The obstacle detecting mechanism according to claim 3, wherein,

lugs (32) are respectively arranged on two radial sides of the through hole (31) on one side surface of the fixed sleeve (3), the floating block (21) is arranged between the two lugs (32) and is respectively connected with the two lugs (32) in a rotating way, and the rotating axis of the floating block (21) is perpendicular to the connecting line of the mounting hole and the center of the shaft hole (212).

5. The obstacle detection mechanism according to any one of claims 1 to 4, wherein,

the sensor (41) comprises a photosensitive sensor or a micro-touch switch; the trigger member (42) includes a catch fixedly mounted to the shaft end of the second end of the linkage assembly.

6. A side rail structure, characterized by comprising:

a side rail (101); and

the detection mechanism according to any one of claims 1 to 5, the first end of the linkage assembly being fixedly connected with the side rail (101), the side rail (101) forming the contact portion, the detection mechanism acting as a body support structure for the side rail (101).

7. A scanning bed, comprising:

a body; and

the detection mechanism according to any one of claims 1 to 5, provided to the body.

8. The scanning bed of claim 7, wherein the scanning bed comprises a scanning bed,

the body comprises a bed body (100) and side rails (101), wherein the side rails (101) are connected to two sides of the bed body (100) through at least one detection mechanism; the sensor (41) is fixedly arranged on the bed body (100); the side rail (101) is fixedly connected to an axial end of the first end of the connecting rod assembly to form the contact portion.

9. CT apparatus, characterized in that it comprises a scanning bed according to claim 7.