Electric push rod braking structure for medical tower crane

Abstract

An electric push rod brake structure for a medical tower crane comprises a rotary base electric push rod, a pressing arm lever, a spring compensation blocking column, a brake column disc and a hollow rotating shaft, and is characterized in that the rotary base electric push rod is installed on a platform base capable of rotating along the plane of the brake structure, and the other end of the rotary base electric push rod is connected with the pressing arm lever through the rotating shaft; one end of the pressing arm lever is fixed on a fixed rotating shaft vertical to the brake structure base, and the other end of the pressing arm lever is a power driven end connected with the electric push rod; the spring compensation bumping post is of a spring bumping post structure mounted on the pressing arm lever; the center of the brake column disc is fixed on the hollow rotating shaft, and a column body is fixed on the brake column disc. The plug pin type stepped braking structure is achieved through the electric push rod, safety and reliability are achieved, the structure is simple, and installation and control are convenient.

Description

Technical Field

[0001] The invention relates to the technical field of medical pendant equipment, in particular to an electric push rod braking structure for a medical pendant. Background Art

[0002] Medical pendants are generally used to suspend monitors and other devices in operating rooms. Most of the braking methods use damping, pneumatic or electromagnetic structures. The damping structure is not reliable enough and is prone to drift; the pneumatic structure must have an air source in the use environment, and the quality of the air source is high; the electromagnetic structure may interfere with medical equipment, the structure is complex and the cost is high, and the electromagnet stroke is relatively short. If it is powered on for a long time, it will generate a lot of heat, which poses a safety hazard. Summary of the invention

[0003] In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides an electric push rod brake structure for medical pendant. The technical solution adopted by the present invention is: to provide an electric push rod brake structure for medical pendant, including a rotating base electric push rod, a pressure arm lever, a spring compensation stop column, a brake column disc, and a hollow shaft, characterized in that: the rotating base electric push rod is installed on a platform base that can rotate along the plane of the brake structure, and the other end is connected to the pressure arm lever through a shaft; one end of the pressure arm lever is fixed on a fixed shaft perpendicular to the base of the brake structure, and the other end is a power driven end connected to the electric push rod; the spring compensation stop column is a spring stop column structure installed on the pressure arm lever; the center of the brake column disc is fixed on the hollow shaft, and a column is fixed on the brake column disc. When the electric push rod is started, the pressure arm lever and the spring compensation stop column connected thereto are pushed, and the stop column is stuck between the columns of the brake column disc to achieve a braking effect. The electric push rod is installed on the rotating base, which can effectively avoid lateral force. The motor completes the braking through the lever structure, which reduces the specification requirements of the input motor.

[0004] Preferably, the driven end of the pressure arm lever is an arc structure, which can save space.

[0005] Preferably, the spring compensation stop column includes a spring, a bracket, a pad, a stop column, and a guide sleeve, one end of the spring is sleeved on the pad installed on the bracket, and the other end is sleeved on the pad connected to the end of the stop column, the bracket is fixed at the intersection of the arc structure and the straight structure of the pressure arm lever, and the stop column vertically passes through the pressure arm lever through the guide sleeve. When the electric push rod pushes the pressure arm lever, if the spring compensation stop column is not stuck between the columns of the brake column disc, but is blocked by the columns, the stop column can compress the spring instead of generating a rigid collision, thereby effectively preventing the electric push rod from being damaged due to overload.

[0006] Preferably, the end of the stop post of the spring compensation stop post structure comprises a conical top and a gradually thickened truncated cone shape.

[0007] Preferably, the electric push rod is a DC motor screw rod structure with self-locking. The DC motor is easy to control and reduces the risk of electromagnetic interference. The self-locking function can ensure the braking effect after it is in place.

[0008] Preferably, the columns on the brake column disc are evenly distributed around a circle, and the gap between adjacent columns is larger than the maximum diameter of the spring compensation stop column, but not more than one time.

[0009] The beneficial effects of the present invention are: simple structure, can be installed in a flat and narrow space; the latch-type braking structure is a stepped structure, and the braking effect is more reliable; the DC motor is safe, reliable and easy to control; at the same time, the present invention significantly enhances the safety and reliability of the equipment during use by introducing the elastic compensation structure of the baffle column. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 A three-dimensional diagram of an electric push rod brake structure for a medical pendant according to the present invention;

[0011] Figure 2 A top view of a released state of an electric push rod brake structure for a medical pendant according to the present invention;

[0012] Figure 3 A top view of a braking state of an electric push rod braking structure for a medical pendant according to the present invention;

[0013] Figure 4 An exploded top view of a spring compensation stop column structure of an electric push rod brake structure for a medical pendant according to the present invention;

[0014] Figure 5 The present invention is an assembly position diagram of an electric push rod brake structure for a medical pendant.

[0015] The components in the accompanying drawings are marked as follows: 10 pressure arm rotating shaft support, 11 rotating shaft, 12 pressure arm, 13 rotating shaft, 20 fixed spring support, 21 stop column, 22 spring, 30 electric push rod, 31 rotating seat, 32 fixed seat, 40 hollow shaft, 50 brake column disc, 51 brake stop column, 60 horizontal arm. DETAILED DESCRIPTION

[0016] The present invention is further described below in conjunction with the accompanying drawings.

[0017] See also Figures 1 to 4The present invention provides an electric push rod brake structure for a medical pendant, which includes a pressure arm rotating shaft support 10, a rotating shaft 11, a pressure arm 12 installed on the rotating shaft 11, an electric push rod 30 driving the pressure arm 12, a rotating shaft 13 connecting the pressure arm 12 and the electric push rod 30, a fixed spring support 20 installed on the pressure arm 12, a spring 22 installed in the spring support 20, a stop column 21 installed at the front end of the spring 22, a rotating seat 31 and a fixed seat 32 installed below the electric push rod 30, a hollow shaft 40, and a brake column disc 50 fixedly installed on the hollow shaft 40, and a brake stop column 51 installed on the brake column disc 50.

[0018] When the electric push rod brake structure of the medical pendant of the present invention is in the first release state, the electric push rod 30 contracts, the rotating seat 31 rotates around the fixed seat 32 through the rotating shaft, and at the same time pulls the pressure arm 12 to rotate around the fixed rotating shaft 11, and the blocking column 21 is disengaged from the brake blocking column 51. At this time, the brake column disc 50 and the hollow shaft 50 fixedly connected to it can rotate freely.

[0019] When the electric push rod brake structure of the medical pendant of the present invention is in the second braking state, the electric push rod 30 is extended, the rotating seat 31 rotates in the opposite direction around the fixed seat 32 through the rotating shaft, and at the same time pushes the pressure arm 12 to rotate in the opposite direction around the fixed rotating shaft 11, and the blocking column 21 is inserted into the gap of the brake blocking column 51. At this time, the brake column disc 50 and the hollow shaft 50 fixedly connected thereto cannot rotate freely, thereby achieving braking.

[0020] When the electric push rod brake structure of the medical pendant of the present invention is in the second braking state, the electric push rod 30 is extended, and the rotating seat 31 is reversely rotated around the fixed seat 32 through the rotating shaft, and at the same time, the pressure arm 12 is pushed to reversely rotate around the fixed rotating shaft 11. If the blocking column 21 and the brake blocking column 51 happen to collide head-on, the blocking column 21 retreats at this time, driving the spring 22 to contract, thereby protecting the electric push rod 30. Then, the hollow shaft 40 forms a torque disturbance under the action of the pendant installed at the bottom. At this time, under the action of the spring 22 and the special angle of the head of the blocking column 21, the brake column disc 50 can be pushed by the brake blocking column 51. At this time, the blocking column 21 is inserted into the gap of the brake blocking column 51, and the hollow shaft 50 to which the brake column disc 50 is fixedly connected cannot rotate freely, thereby achieving braking.

Claims

1. An electric push rod brake structure for a medical pendant, comprising a rotating base electric push rod, a pressure arm lever, a spring compensation stop column, a brake column disc, and a hollow rotating shaft, characterized in that: The rotating base electric push rod is installed on a platform base that can rotate along the plane of the brake structure, and the other end is connected to the pressure arm lever through a rotating shaft; one end of the pressure arm lever is fixed on a fixed rotating shaft perpendicular to the brake structure base, and the other end is a power driven end connected to the electric push rod; the spring compensation stop column is a spring stop column structure installed on the pressure arm lever; the center of the brake column disc is fixed on the hollow rotating shaft, and a column is fixed on the brake column disc.

2. The electric push rod brake structure for medical pendant according to claim 1, characterized in that: The driven end of the pressure arm lever is an arc structure.

3. The electric push rod brake structure for medical pendant according to claim 2, characterized in that: The spring compensation stop column structure includes a spring, a bracket, a pad, a stop column, and a guide sleeve. One end of the spring is sleeved on the pad installed on the bracket, and the other end is sleeved on the pad connected to the end of the stop column. The bracket is fixed at the intersection of the arc structure and the straight structure of the pressure arm lever, and the stop column vertically passes through the pressure arm lever through the guide sleeve.

4. The electric push rod brake structure for medical pendant according to claim 3 is characterized in that: The end of the blocking column comprises a conical top and a truncated cone shape which gradually becomes thicker.

5. The electric push rod brake structure for medical pendant according to claim 1, characterized in that: The electric push rod is a DC motor lead screw structure with self-locking.

6. The electric push rod brake structure for medical pendant according to claim 1, characterized in that: The columns on the brake column disc are evenly distributed around a circle, and the gap between adjacent columns is larger than the maximum diameter of the spring compensation stop column, but not more than one time.

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