Lifting apparatus and a radiation system including the same

Patent metadata

Field	Value
Publication number	US-10939883-B2
Application number	US-201916504421-A
Country	US
Kind code	B2
Filing date	Jul 8, 2019
Priority date	Dec 18, 2018
Publication date	Mar 9, 2021
Grant date	Mar 9, 2021

Abstract

The present disclosure relates to a lifting apparatus. The lifting apparatus may include a base column, a mobile column, a sliding component, a supporting arm, a lifting system, and a move-coordination system. The mobile column connected to the base column may be vertically movable relative to the base column. The lifting system may be configured to cause the movement of the mobile column. The sliding component connected to the mobile column may be vertically movable relative to the mobile column. The mobile column and the sliding component may be connected via the move-coordination system, which enables the sliding component and the mobile column to move simultaneously according to a predetermined relative motion relationship. The supporting arm may be connected to the sliding component.

First claim

We claim:

1. A lifting apparatus, comprising a base column, a mobile column, a sliding component, a supporting arm, a lifting system, and a move-coordination system, wherein:
the mobile column connected to the base column is vertically movable relative to the base column;
the lifting system is configured to cause the movement of the mobile column;
the sliding component connected to the mobile column is vertically movable relative to the mobile column;
the mobile column and the sliding component are connected via the move-coordination system, which enables the sliding component and the mobile column to move simultaneously according to a predetermined relative motion relationship;
the supporting arm is connected to the sliding component;
the move-coordination system includes a first pulley and a first cable coiled around the first pulley, wherein the first pulley is a multi-radii pulley having a first radius and a second radius;
a first end of the first cable is connected to the base column;
a rotating shaft of the first pulley is connected to the mobile column; and
a second end of the first cable is connected to the sliding component through the first pulley.

2. The lifting apparatus of claim 1 , wherein the predetermined relative motion relationship includes that:
the sliding component moves relative to the base column and the mobile column moves relative to the sliding component both along a same direction; and
a moving distance of the sliding component relative to the mobile column is proportional to a moving distance of the mobile column relative to the base column.

3. The lifting apparatus of claim 1 , wherein the first pulley is a two-radii pulley.

4. The lifting apparatus according to claim 3 , wherein a ratio of the first radius to the second radius is equal to a ratio of a vertical movement distance of the mobile column relative to the base column to a vertical movement distance of the sliding component relative to the mobile column.

5. The lifting apparatus of claim 1 wherein the lifting system is configured to cause the mobile column to move relative to the base column according to a predetermined moving manner.

6. The lifting apparatus of claim 1 , further comprising:
a first motor connected to and drive the move-coordination system.

7. The lifting apparatus of claim 6 , further comprising:
a first controller in communication with the first motor, wherein the first controller is configured to cause the first motor to move the sliding component to a predetermined position.

8. The lifting apparatus of claim 1 , further comprising:
a locking mechanism having a first state and a second state, wherein,
in the first state, the locking mechanism unlocks at least one element of the move-coordination system or the lifting system to enable the sliding component to move, and
in the second state, the locking mechanism locks the at least one element of the move-coordination system or at least one element of the lifting system to stop/disable the sliding component from moving.

9. The lifting apparatus of claim 1 , wherein:
the lifting system includes a cone pulley, at least one movable pulley, a spring and a second cable;
a rotating shaft of the cone pulley is connected to the base column;
a first end of the spring is connected to the base column, and a second end of the spring is connected to the rotating shaft of the at least one movable pulley;
the second cable is coiled around the at least one movable pulley and the cone pulley, wherein a first end of the second cable is connected to the base column, and the second end of the second cable is connected to the mobile column; and
the second cable is coiled around the cone pulley in a manner that a pulling force by the second end of the second cable on the mobile column is in balance with the force by the mobile column and the components thereon to the second cable.

10. The lifting apparatus of claim 9 , wherein:
the lifting system includes a block and tackle including one or more movable pulleys and one or more first fixed pulleys;
the rotating shafts of the one or more first fixed pulleys are connected to the base column;
the rotating shafts of the one or more movable pulleys are connected to the second end of the spring; and
the second cable is coiled around the pulleys of the block and tackle and the cone pulley.

11. The lifting apparatus of claim 9 , wherein the cone pulley is driven by a second motor.

12. The lifting apparatus of claim 1 , wherein:
the lifting system adopts a leadscrew mechanism, which includes a third motor, a screw rod, and a nut;
the screw rod is disposed on the base column, and the third motor is configured to drive the screw rod to rotate;
the nut is disposed on the screw; and
the nut is connected to the mobile column to drive the mobile column.

13. The lifting apparatus of claim 1 , wherein:
the lifting system includes an electric cylinder or an electro-hydraulic push rod;
the electric cylinder or the electro-hydraulic push rod is disposed on the base column; and
the electric cylinder or the electro-hydraulic push rod is configured to drive the mobile column to move.

14. The lifting apparatus of claim 1 , wherein:
the lifting system includes a spring balancer and a second fixed pulley;
a housing of the spring balancer is connected to the base column;
a cable of the spring balancer is coiled around the second fixed pulley, and an end of the cable is connected to the mobile column; and
a rotating shaft of the second fixed pulley is connected to the base column.

15. The lifting apparatus of claim 14 , wherein the lifting system further includes a fourth motor configured to drive the spring balancer to release or retract the cable.

16. The lifting apparatus of claim 1 , wherein the supporting arm is a telescopic arm extendable and retractable along a substantially horizontal direction relative to the base column.

17. The lifting apparatus of claim 1 , wherein the supporting arm is configured to support an object, and the object includes a radiation component for emitting radiation rays.

18. A radiation system, comprising:
a body;
a radiation component for emitting radiation rays; and
a lifting apparatus, comprising a base column, a mobile column, a sliding component, a supporting arm, a lifting system, and a move-coordination system, wherein:
the base column is connected to the body and rotatable relative to the body with respect to a vertical axis;
the mobile column is connected to the base column and is vertically movable relative to the base column;
the lifting system is configured to cause a vertical movement of the mobile column relative to the base column;
the sliding component is connected to the mobile column and is vertically movable relative to the mobile column;
the mobile column and the sliding component are connected via the move-coordination system, which enables the sliding component and the mobile column to move simultaneously according to a predetermined relative motion relationship; and
the supporting arm is connected to the sliding component, wherein the supporting arm is configured to support the radiation component;
the move-coordination system includes a first pulley and a first cable coiled around the first pulley, wherein the first pulley is a multi-radii pulley having a first radius and a second radius;
a first end of the first cable is connected to the base column;
a rotating shaft of the first pulley is connected to the mobile column; and
a second end of the first cable is connecte

Assignees

• Shanghai United Imaging Healthcare Co Ltd

Inventors

• Tang Yang
• Zhong Xuegang

Classifications

• A61B90/50 Primary

  Supports for surgical instruments, e.g. articulated arms · CPC title

• B66F7/28

  Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions · CPC title

• A61B6/447

  the source unit or the detector unit being mounted to counterpoise or springs · CPC title

• A61B6/4482

  involving power assist circuits · CPC title

• A61B6/4458

  the source unit or the detector unit being attached to robotic arms · CPC title