CN217977991U

CN217977991U - Moment limiting mechanism and mobile CT (computed tomography) comprising same

Info

Publication number: CN217977991U
Application number: CN202221086627.XU
Authority: CN
Inventors: 邵世明; 齐奇
Original assignee: Suzhou Shengnuo Medical Technology Co ltd
Current assignee: Suzhou Shengnuo Medical Technology Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2022-12-06
Anticipated expiration: 2032-05-07

Abstract

The present disclosure provides a torque limiting mechanism, comprising: the gear head adjusting mechanism comprises a base body, a gear head mounting plate, a first connecting rod, a gear head, a fluted disc, a pressure spring adjusting nail and a pressure spring. The present disclosure also provides a mobile CT including the above torque limiting mechanism. The moment limiting mechanism and the mobile CT comprising the moment limiting mechanism do not need to borrow tools, can quickly adjust the adjustable support legs, and simplify the operation difficulty of equipment users; and four supporting legs can be fully contacted with the ground through moment setting, slight shaking during the work of moving the CT is avoided, and therefore the image quality is improved.

Description

Moment limiting mechanism and mobile CT (computed tomography) comprising same

Technical Field

The disclosure relates to the technical field of medical equipment, in particular to a moment limiting mechanism and a mobile CT (computed tomography) comprising the moment limiting mechanism.

Background

With the changing demand of the demand side, especially some special severe patients and stroke patients, the demand of miniaturized mobile CT (Computed Tomography) and vehicle-mounted mobile CT is increasing. Miniaturized mobile CT's typically serve inconveniently mobile patients and are therefore typically pushed to the patient's bedside for use. The ground of the general ward and the bottom surface of the rack are not very tight when in contact, when in CT scanning work, the whole CT can slightly move due to the rotation of the inside of the rack, thereby affecting the image quality. In order to solve the problems, the bottom of some machine frames is provided with four adjustable supporting feet, but the common adjustable supporting feet can be adjusted randomly by means of tools, namely the common adjustable supporting feet can be adjusted to be in contact with the ground by experience, and the common adjustable supporting feet can be slightly moved due to poor contact when in actual work.

SUMMERY OF THE UTILITY MODEL

The invention aims to provide a movable CT moment limiting mechanism and a movable CT, which can avoid slight shaking of the movable CT during working. The specific scheme is as follows:

according to a specific embodiment of the present disclosure, in a first aspect, the present disclosure provides a torque limiting mechanism, including:

the base body comprises a limiting groove, and a guide post is arranged in the limiting groove;

one end of the gear head mounting plate is inserted into the limiting groove, a gap exists between the gear head mounting plate and the edge of the limiting groove, the other end of the gear head mounting plate is used for accommodating a gear head, the surface of the gear head mounting plate comprises a limiting part matched with the guide post for limiting, the sliding direction of the gear head mounting plate in the limiting groove is defined as the Y direction, and the direction vertical to the Y direction is defined as the X direction;

the gear head is sleeved in the gear head mounting plate;

one end of the fluted disc is connected with the gear head mounting plate, and the other end of the fluted disc is connected with the base body; and

a pressure mechanism configured to apply a pressure in an X direction to the gear head mounting plate.

Optionally, the pressure mechanism further comprises:

the pressure spring adjusting nail is in threaded connection with the base body, and the extending length of the pressure spring adjusting nail relative to the base body can be adjusted by rotating the pressure spring adjusting nail; and

and one end of the pressure spring is pressed against the gear head mounting plate, and the other end of the pressure spring is pressed against the pressure spring adjusting nail.

Optionally, the guide post is sleeved in the limiting portion, and a gap between the limiting portion and the guide post in the Y direction is larger than a gap between the limiting portion and the guide post in the X direction.

Optionally, the gear head with still be provided with between the gear head mounting panel:

the gear head sleeve is of an annular structure, is arranged between the gear head and the gear head mounting plate and is used for supporting the gear head;

the retainer ring is positioned at one end of the gear head sleeve and is used for limiting the gear head to move relative to the gear head sleeve; and

and the gland is positioned on one side of the gear head and used for limiting the gear head sleeve to move relative to the gear head mounting plate.

In a second aspect, the present disclosure provides a mobile CT including a torque limiting mechanism, comprising a CT body and a torque limiting mechanism as claimed in any preceding claim.

Optionally, further comprising:

the adjustable support leg is arranged at the bottom of the CT body and comprises a contact part and a connecting rod, wherein the contact part is used for being attached to the ground, one end of the connecting rod is connected to the contact part, the other end of the connecting rod is connected with the CT body, the bottom of the CT body is connected through threads, and the middle part of the connecting rod is further provided with a matching structure matched with the inner wall of the gear head.

Optionally, further comprising:

the foot-operated pull rod mechanism is arranged at the bottom of the CT body, one end of the foot-operated pull rod mechanism is connected with the torque limiting mechanism, and the other end of the foot-operated pull rod mechanism is used for an operator to tread and transmitting pressure applied by the operator to the torque limiting mechanism.

Optionally, the pedal rod mechanism further comprises:

the pedal support comprises a body connecting part and a pedal connecting part, wherein the body connecting part is connected to the bottom of the CT body, and the pedal connecting part is connected with a pedal;

a foot pedal for transmitting pressure applied by an operator to the push-pull rod; and

the push-pull rod comprises a tension spring connecting part and a moment limiting connecting part, wherein the tension spring connecting part is connected with a push-pull rod tension spring arranged at the bottom of the CT body, and the moment limiting connecting part is connected with the moment limiting mechanism.

Optionally, the foot pedal further comprises:

a pedal portion for being stepped by an operator;

a support connecting part connected to a pedal connecting part of the pedal support so that the pedal can rotate about the pedal connecting part as a rotation axis; and

and the push-pull rod connecting part is connected with the push-pull rod.

Optionally, the mobile CT further includes:

a moving mechanism disposed at a bottom of the moving CT body for moving the moving CT, the moving mechanism further comprising:

the traveling lifting mechanism is arranged at the bottom of the movable CT body;

the lifting electric cylinder is used for driving the walking lifting mechanism to ascend or descend;

the casters are arranged at four corners of the bottom of the movable CT body, connected with the traveling lifting mechanism and ascended or descended together with the traveling lifting mechanism, when the movable CT is in a movable state, the casters are in contact with the ground, and when the movable CT is in a non-movable state, the adjustable support legs are in contact with the ground.

The moment limiting mechanism with the scanning bed and the mobile CT comprising the moment limiting mechanism do not need to borrow tools, can quickly adjust the adjustable support legs, and simplify the operation difficulty of equipment users; and four supporting legs can be fully contacted with the ground through moment setting, slight shaking during the work of moving the CT is avoided, and therefore the image quality is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty. In the drawings:

fig. 1 schematically shows a schematic structural diagram of a mobile CT including a moment limiting mechanism according to an embodiment of the present invention;

fig. 2 schematically illustrates a bottom view of a mobile CT including a moment limiting mechanism according to an embodiment of the present invention;

fig. 3 schematically shows a bottom schematic view of a mobile CT including a torque limiting mechanism according to an embodiment of the present invention;

fig. 4 schematically shows a partial detail view of a mobile CT including a torque limiting mechanism according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a torque limiting mechanism provided by an embodiment of the present invention in a non-release state;

fig. 6 is a cross-sectional view schematically illustrating a torque limiting mechanism provided in an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a torque limiting mechanism according to an embodiment of the present invention in a released state;

fig. 8 schematically shows a schematic structural diagram of the torque limiting mechanism according to an embodiment of the present invention when a set value is reached.

The reference numerals are represented as:

100. moving the CT; 110. moving the CT body; 120. a moving mechanism; 121. a traveling lifting mechanism; 122. a lifting electric cylinder; 123. a caster wheel; 130. an adjustable support leg; 131. a contact portion; 132. A connecting portion; 140. a foot-operated pull rod mechanism; 141. a pedal support; 142. a foot pedal; 143. A push-pull rod; 144. a push-pull rod tension spring; 145. a tension spring fixing column; 146. a push-pull rod guide sleeve; 150. A torque limiting mechanism; 1511. a substrate; 1512. a first link; 1513. a guide post; 1514. A push-pull rod connecting portion; 1521. a gear head mounting plate; 1522. a gear head; 1523. a gear head cover; 1524. a gland; 1525. a retainer ring; 1531. a fluted disc; 1532. a fluted disc tension spring; 1533. A second link; 1541. a pressure spring; 1542. and adjusting the nail by a pressure spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, 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 efforts belong to the protection scope of the present invention.

The terminology used in the embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the embodiments of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and "a plurality" typically includes at least two.

It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.

It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present invention to describe, they should not be limited to these terms.

It is also noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that an 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 article or apparatus. Without further limitation, the recitation of an element by the phrase "comprising a" does not exclude the presence of additional like elements in a commodity or device comprising the element.

The following describes in detail alternative embodiments of the present invention with reference to the accompanying drawings.

Example 1

According to the utility model discloses a specific embodiment, this embodiment provides a remove CT limit moment mechanism and applied this limit moment mechanism's removal CT.

Referring to fig. 1 to 3 together, the mobile CT100 includes: a moving CT body 110, a moving mechanism 120, an adjustable foot 130, a foot lever mechanism 140, and a moment limiting mechanism 150.

The movable CT body 110 is used as a main component of the CT system, and includes a rotation system, a rotation driving component, an electrical component, a housing, and other components, and a CT gantry for carrying the above functional systems.

The moving mechanism 120 is disposed at the bottom of the moving CT body 110, and the moving CT100 can be moved from one position to another position by the moving mechanism 120 when it is needed to move.

The moving mechanism 120 further includes: a traveling lift mechanism 121, a lift cylinder 122, and casters 123. In some embodiments, the number of the casters 123 is 4, and the casters 123 are respectively disposed at four corners of the bottom of the mobile CT body 110. In some embodiments, the casters 123 are symmetrically disposed at the bottom of the mobile CT body 110. The caster 123 is connected to the travel elevating mechanism 121 and can be raised or lowered together with the travel elevating mechanism 121. The lifting electric cylinder 122 is used for providing power to the walking lifting mechanism 121 and driving the walking lifting mechanism 121 to ascend or descend. One end of the lifting electric cylinder 122 is disposed at the bottom of the movable CT body 110, and the other end of the lifting electric cylinder 122 is disposed on the upper surface of the traveling lifting mechanism 121.

In some embodiments, the moving mechanism 120 includes two parallel walking lifting mechanisms 121, and each walking lifting mechanism 121 extends along a side of the bottom of the moving CT body 110. The projection of the walking lifting mechanism 121 on the horizontal plane is approximately long. Two opposite end points of the travelling lifting mechanism 121 are respectively provided with a caster 123, and the middle part of the travelling lifting mechanism 121 is provided with a lifting electric cylinder 122; the caster 123 is disposed on a side of the traveling lifting mechanism 121 close to the ground, and the electric lift cylinder 122 is disposed on a side of the traveling lifting mechanism 121 far from the ground.

When the elevating cylinder 122 drives the traveling elevating mechanism 121 to descend, the caster 123 connected to the traveling elevating mechanism 121 also descends until the caster 123 contacts the ground, and at this time, the mobile CT100 can move arbitrarily on the ground. When the lifting electric cylinder 122 drives the walking lifting mechanism 121 to ascend, the caster 123 connected with the walking lifting mechanism 121 also ascends, along with the ascending of the caster 123, the part of the mobile CT100 contacting with the ground is converted into an adjustable supporting leg 152 by the caster 123, after the supporting leg contacts with the ground, the caster 123 also continuously ascends until the supporting leg is separated from the ground, and at this time, the mobile CT100 is completely positioned on the ground through the supporting leg.

The adjustable foot 130 is used to support the mobile CT100 and to position the mobile CT100 on the ground.

The adjustable leg 130 is disposed at the bottom of the CT body 110. In some embodiments, the number of the adjustable legs 130 is 4, the adjustable legs 130 are respectively disposed at four corners of the bottom of the mobile CT body 110, and the adjustable legs 130 can be disposed near the casters 123, such that the adjustable legs 130 and the casters 123 are disposed in pairs. In some embodiments, the adjustable legs 130 are symmetrically disposed at the bottom of the mobile CT body 110.

Referring to fig. 4, the adjustable leg 130 further includes a contact portion 131 and a connecting rod 132. Wherein the contact portion 131 includes a flat surface for good contact with the ground. The connecting rod 132 is perpendicular to the surface of the contact portion, one end of the connecting rod 132 is connected to the contact portion 131, and the other end of the connecting rod 132 is connected to the CT body 110 at the bottom of the CT body 110 by a screw thread. The middle part of the connecting rod 132 is further provided with a matching structure matched with the inner wall of the gear head 1522 of the moment limiting mechanism 150, the matching structure can be a polyhedral structure, such as a hexahedral structure, so that the connecting rod 132 can be tightly sleeved inside the gear head 1522 and rotate together through the mutually matched polyhedral structure. In some embodiments, the gear head 1522 rotates counterclockwise, thereby causing the adjustable foot 130 to rotate counterclockwise in a synchronized manner.

The adjustable leg 130 has a leg height that varies during rotation of the adjustable leg 130. In some embodiments, the threaded connection of the adjustable foot 130 to the CT body 110 is left-handed, i.e., the adjustable foot 130 gradually approaches the ground when rotated counterclockwise. Can eliminate stabilizer blade and ground contact failure that leads to because ground flatness and/or the difference of stabilizer blade height through adjusting the stabilizer blade height, avoid CT during operation to take place slight rocking.

The pedal rod mechanism 140 is disposed at the bottom of the CT body 110, one end of the pedal rod mechanism is connected to the moment limiting mechanism 150, and the other end of the pedal rod mechanism is in contact with the sole of the operator, so as to transmit the pressure applied by the operator to the moment limiting mechanism 150, and drive the moment limiting mechanism 150 to rotate along a specific direction.

The foot lever mechanism 140 further comprises: a pedal support 141, a pedal 142, a push-pull rod 143, a push-pull rod tension spring 144, a tension spring fixing post 145 and a guide sleeve 146 along the push-pull rod.

The pedal support 141 is disposed at the bottom of the CT body 110. The pedal support 141 includes a body connecting part and a pedal connecting part. The body connecting part is disposed at the bottom of the CT body 110, the pedal connecting part is connected to the pedal 142, and the pedal 142 can rotate around the pedal connecting part as a rotation axis.

The foot pedal 142 serves to transmit pressure applied by the sole of the foot of the operator to the push-pull rod 143. The pedal 142 further includes a pedal portion, a support connecting portion, and a push-pull rod connecting portion. The pedal portion is configured to contact the sole of an operator, the pressure of the sole of the operator is transmitted to the push-pull rod 143 through the pedal portion, the support connecting portion is connected to the pedal connecting portion of the pedal support 141, so that the pedal 142 can rotate about the pedal connecting portion as a rotation axis, and the push-pull rod connecting portion is connected to the push-pull rod 143.

The push-pull rod 143 is used to drive the torque limiting mechanism 150 to rotate. The push-pull rod 143 is disposed within the push-pull rod guide sleeve 146, and the push-pull rod guide sleeve 146 is disposed at the bottom of the CT body 110. The push-pull rod 143 can reciprocate along the push-pull rod guide sleeve 146. The push-pull rod 143 further includes a tension spring coupling portion and a moment-limiting coupling portion. The tension spring connecting portion is connected to the push-pull rod tension spring 144, and the moment-limiting connecting portion is connected to the push-pull rod connecting portion of the moment-limiting mechanism 150.

One end of the push-pull rod tension spring 144 is connected to the tension spring connecting portion of the push-pull rod 143, and the other end is connected to the tension spring fixing post 145, and is disposed at the bottom of the CT body 110 through the tension spring fixing post 145.

In some embodiments. After the operator steps on the pedal plate 142, the pedal plate 142 drives the push-pull rod 143 to move along the push-pull rod guide sleeve 146, so as to push the moment limiting mechanism 150 to rotate counterclockwise around the gear head 1522 as an axis.

The moment limiting mechanism 150 is disposed at the bottom of the CT body 110, and is configured to drive the adjustable supporting leg 130 to rotate. One end of the torque limiting mechanism 150 is connected to the push-pull rod 143, and the other end is sleeved on the outside of the connecting portion 132 of the adjustable supporting leg 130.

Referring to fig. 5 to 8, the torque limiting mechanism 150 further includes: the gear head adjusting mechanism comprises a base 1511, a first connecting rod 1512, a guide column 1513, a push-pull rod connecting portion 1514, a gear head mounting plate 1521, a gear head 1522, a gear head sleeve 1523, a gland 1524, a retainer ring 1525, a fluted disc 1531, a fluted disc tension spring 1532, a second connecting rod 1533, a pressure spring 1541 and a pressure spring adjusting nail 1542.

The base 1511 is disposed at the bottom of the CT body 110, one end of the base 1511 is connected to the push-pull rod 143, and specifically, the base 1511 is rigidly connected to the moment-limited connection portion of the push-pull rod 143 through the push-pull rod connection portion 1514. When the push-pull rod 143 moves, the base 1511 is driven to move together.

The base 1511 is recessed downward at the middle part to form a limiting groove, and the surface of the limiting groove further comprises an upward protruding structure which forms the guide post 1513. The limiting groove is used for accommodating the gear head mounting plate 1521, and the guide column 1513 is used for limiting the gear head mounting plate 1521.

One end of the gear head mounting plate 1521 is arranged in a limiting groove of the base 1511, and a certain gap exists between the edge of the limiting groove, that is, one end of the gear head mounting plate 1521 can move in the limiting groove in a small range. The surface of gear head mounting panel 1521 includes spacing portion, spacing portion can be blind hole or through-hole, be used for with the guide post 1513 cooperation on spacing groove surface is spacing, the guide post can overlap and establish spacing portion is inside. The size of the limiting part is slightly larger than that of the guide column 1513, and the gap between the limiting part and the guide column 1513 in the Y direction is larger than that between the limiting part and the guide column 1513 in the X direction, so that the gear head mounting plate 1521 can reciprocate relative to the base 1511 in the Y direction.

One end of the first link 1512 is disposed on the surface of the base 1511, and the other end is disposed on the surface of the gear head mounting plate 1521. In some embodiments, the first link 1512 can push the gear head mounting plate 1521 away from the base 1511 when the base 1511 moves counterclockwise under the push-pull rod 143.

The gear head 1522 is sleeved at the other end of the gear head mounting plate 1521, and the position of the gear head 1522 is far away from the limiting groove. Gear head 1522 is hollow loop configuration, gear head 1522 cup joints outside the connecting rod 132 of adjustable stabilizer blade 130, gear head 1522's inner wall with the outer wall in close contact with of connecting rod 132. In some embodiments, the cross-section of the inner wall of the gear head 1522 is a regular polygon, such as a regular hexagon. The gear head 1522 is sleeved in the gear head mounting plate 1521, and in some embodiments, at least a part of the outer wall of the gear head 1522 is in a saw-tooth shape.

In some embodiments, a gear head sleeve 1523, a gland 1524 and a retainer ring 1525 are further disposed between the gear head 1522 and the gear head mounting plate 1521. The gear head 1523 is of an annular structure, is arranged between the gear head 1522 and the gear head mounting plate 1521, and is used for supporting the gear head. The retaining ring 1525 is located at one end of the gear head housing 1523, and is used for limiting the gear head to move relative to the gear head housing. The gland 1524 is located one side of the gear head 1522 and used for limiting the gear head sleeve to move relative to the gear head mounting plate.

One end of the second link 1533 is disposed on the surface of the base 1511, and the other end of the second link 1533 is disposed on the surface of the toothed plate 1531. The second link 1533 can pull the toothed plate 1531 away from the gear head 1522.

One end of the fluted disc tension spring 1532 is arranged on the surface of the gear head mounting plate 1521, and the other end is connected with the fluted disc 1531. The tension of the fluted disc tension spring 1532 is small, when the moment limiting mechanism 150 rotates clockwise, the gear head 1522 can toggle the fluted disc 1531, at this time, the gear head 1522 of the moment limiting mechanism 150 and the adjustable supporting leg 130 do not rotate, that is, the moment limiting mechanism 150 is in a release state.

One end of the fluted disc 1531 is connected to the fluted disc tension spring 1532, and the other end is connected to the second connecting rod 1533.

The torque limiting mechanism 150 further includes a pressure mechanism configured to apply pressure in the X-direction to the gear head mounting plate. The pressure mechanism further includes a compression spring 1541 and a compression spring adjustment pin 1542.

One end of the pressure spring 1541 is pressed against the side edge of the gear head mounting plate parallel to the Y direction, and the other end of the pressure spring 1542 is pressed against the pressure spring adjusting nail 1542. The pressure spring adjusting nail 1542 is in threaded connection with the base body 1511, and the length of the pressure spring adjusting nail 1542 extending out of the base body 1511 can be adjusted by rotating the pressure spring adjusting nail 1542, so that the expansion degree of the pressure spring 1541 is adjusted.

The foot-pull mechanism 140 is disposed at the bottom of the CT body 110 near the adjustable leg 132 along with the torque limiting mechanism 150. The process of adjusting the leg height of the adjustable leg 132 using the foot-link mechanism 140 and the moment-limiting mechanism 150 can be divided into three stages: the state of the device is not in the release state but in the set value, and the state of the device is in the release state but in the set value.

In some embodiments, the foot-operated lever mechanism 140 drives the torque limiting mechanism 150 to rotate counterclockwise, and one end of the torque limiting mechanism 150 is connected to the adjustable leg 132, so that when the torque limiting mechanism 150 rotates counterclockwise, the adjustable leg 132 can be driven to rotate counterclockwise together, and the height of the adjustable leg 132 changes to gradually approach the ground. It will be appreciated that in some embodiments, the foot lever mechanism 140 may be configured to rotate the moment limiting mechanism 150 clockwise, and the height of the adjustable foot 132 gradually approaches the ground when the foot lever mechanism rotates clockwise.

When the torque limiting mechanism 150 does not reach a set value and is in a non-releasing state, one end of the torque limiting mechanism 150 is connected with the adjustable support leg 130, when the torque limiting mechanism 150 rotates counterclockwise, the gear head 1522 is meshed with the toothed disc 1531, and when the torque set value is not reached, the gear head 1522 and the adjustable support leg 130 rotate synchronously. The torque is provided by the compression spring 1541, which can be adjusted by a compression spring adjusting pin 1542. The adjustable leg 130 is screwed to the bottom of the movable CT body 110, and the screw thread is a left-handed screw thread, that is, when the adjustable leg 130 rotates counterclockwise, the adjustable leg 130 gradually approaches the ground.

When the moment limiting mechanism 150 does not reach the set value and is in the release state, the foot leaves the pedal 142, the push-pull rod tension spring 144 pulls the push-pull rod 143 to move in the opposite direction, and the push-pull rod 143 drives the moment limiting mechanism 150 to rotate clockwise. Because the tension of the fluted disc tension spring 1531 is very small, when the torque limiting mechanism 150 rotates clockwise, the gear head 1522 can shift the fluted disc 1531, and at this time, the gear head 1522 of the torque limiting mechanism 150 and the adjustable leg 130 do not rotate.

When the torque limiting mechanism 150 reaches the set value, the operator repeatedly steps on the foot pedal 142, so that the contact force between the adjustable support leg 130 and the ground reaches the set value of the torque limiting mechanism 150. At this time, the compression spring 1541 is compressed, the first link 1512 pushes the gear head mounting plate 1521 to move leftward, and the second link 1533 pulls the toothed plate 1531 away from the gear head 1522. At this time, even if the pedal 142 is stepped on, the gear head 1522 and the adjustable support leg 130 do not rotate any more, and at the same time, the base 1511 of the moment limiting mechanism 150 collides with the gear head mounting plate 1521, so that a sound of metal impact is generated, and an operator can judge that the adjustment is finished accordingly.

The moment limiting mechanism with the scanning bed and the mobile CT comprising the moment limiting mechanism do not need to borrow tools, can quickly adjust the adjustable support legs, and simplify the operation difficulty of equipment users; and the four support legs are stressed the same through the moment setting and can be fully contacted with the ground, so that slight shaking during the working of the movable CT is avoided, and the image quality is improved.

Finally, it should be noted that: the embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The system or the device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The above examples are only intended to illustrate the technical solutions of the present disclosure, not to limit them; although the present disclosure has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present disclosure.

Claims

1. A torque limiting mechanism, comprising:

the gear head is sleeved in the gear head mounting plate;

2. The torque-limiting mechanism of claim 1, wherein the pressure mechanism further comprises:

3. The torque-limiting mechanism of claim 1, wherein the guide posts are sleeved in the limiting portion, and a gap between the limiting portion and the guide posts in the Y direction is larger than a gap between the limiting portion and the guide posts in the X direction.

4. The torque-limiting mechanism of claim 1, further comprising, between the gear head and the gear head mounting plate:

5. A mobile CT comprising a torque limiting mechanism, comprising a CT body and a torque limiting mechanism according to any of claims 1-4.

6. The mobile CT incorporating a torque limiting mechanism of claim 5, further comprising:

7. The mobile CT incorporating a moment limiting mechanism of claim 6, further comprising:

pedal pull rod mechanism sets up CT body bottom, one end with limit moment mechanism is along connecting, and the other end is used for supplying the operator to trample for transmit the pressure that the operator was applyed for limit moment mechanism.

8. The mobile CT incorporating a torque limiting mechanism of claim 7, wherein the foot lever mechanism further comprises:

9. The motion CT incorporating a torque limiting mechanism of claim 8, wherein the foot pedal further comprises:

a pedal portion for being stepped by an operator;

and the push-pull rod connecting part is connected with the push-pull rod.

10. The mobile CT incorporating a moment limiting mechanism of claim 6, further comprising:

a moving mechanism disposed at a bottom of the CT body for moving the moving CT, the moving mechanism further comprising:

the walking lifting mechanism is arranged at the bottom of the CT body;

the truckles are arranged at four corners of the bottom of the CT body, are connected with the walking lifting mechanism and ascend or descend together with the walking lifting mechanism, and are in contact with the ground when the mobile CT is in a moving state, and are in contact with the ground when the mobile CT is in a non-moving state.