CN114869643B

CN114869643B - Medical crane tower height adjusting device

Info

Publication number: CN114869643B
Application number: CN202210546716.6A
Authority: CN
Inventors: 卞桂山; 王慧娟; 黄贺东; 陶晓旺; 黎群华
Original assignee: Maquet Suzhou Co Ltd
Current assignee: Maquet Suzhou Co Ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2024-03-01
Anticipated expiration: 2042-05-18
Also published as: CN114869643A

Abstract

The invention discloses a medical crane height adjusting device, which comprises a rotary swing mechanism for a professional to operate, a stretching mechanism matched with the rotary swing mechanism, and a trigger piece matched with the stretching mechanism and capable of triggering a release mechanism; the rotary swinging mechanism comprises an operation handle capable of being pushed down or pushed up, and a swinging rod driven by the operation handle to swing clockwise or anticlockwise, and the swinging rod is provided with a first mute component; the stretching mechanism comprises a sliding block, and the first mute component is mutually matched with the sliding block. The invention can realize simple and convenient operation and mute operation.

Description

Medical crane tower height adjusting device

Technical Field

The invention relates to the field of medical appliances, in particular to a medical crane tower height adjusting device.

Background

A medical tower crane is a ceiling-mounted unit for providing medical gas, power, communication call and network terminal, capable of carrying medical instruments required by a patient and providing a good nursing space. When the medical crane is used, the box body of the crane needs to be adjusted to a proper height according to the requirement, and the traditional medical crane height adjusting device triggers the release mechanism by operating the handle, so that the gas spring with the height adjusted is released, and the lifting of the box body is controlled.

When the lifting tower height adjusting mechanism is used, the reaction time of an operator should be considered as short as possible, so that the operation logic is simple and is particularly important, but the existing medical lifting tower height adjusting device generally adopts a mode of pressing down a handle to trigger the release mechanism, so that the handle is required to be pressed down firstly when the box body height is adjusted downwards and upwards, the operation action when the box body is adjusted upwards is inconsistent with the box body adjusting direction, the operation logic of the operator in the use process is complex, the use is inconvenient, the structure is complex, and the production cost is high.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a medical crane height adjusting device which is simple and convenient to operate and can realize mute operation.

The invention is realized by the following technical scheme:

the utility model provides a medical crane height adjusting device, it includes the rotatory swing mechanism that is used for the professional to operate, with rotatory swing mechanism the tensile mechanism of joining in marriage and connect and can trigger the trigger piece of release mechanism with tensile mechanism joining in marriage; the rotary swinging mechanism comprises an operation handle capable of being pushed down or pushed up, and a swinging rod driven by the operation handle to swing clockwise or anticlockwise, and the swinging rod is provided with a first mute component; the stretching mechanism comprises a sliding block, and the first mute component is mutually matched with the sliding block.

Further, the swinging rod is symmetrically provided with two swinging ends, and the first silencing component comprises a pair of silencing assemblies respectively connected with the two swinging ends.

Further, the mute assembly includes a rolling bearing and a pair of cushions positioned on both sides of the rolling bearing.

Furthermore, the mute assembly further comprises a pin, the pin is fixedly connected with the two swinging ends respectively, the rolling bearing is sleeved on the pin, a limit sleeve is sleeved between the pin and one of the buffer pads, and the other buffer pad is sleeved on the pin.

Further, the stretching mechanism further comprises a second mute part, wherein the second mute part comprises a pair of guide rods and a pair of sliding bearings enclosed in the stretching mechanism, and the guide rods are supported in the sliding bearings.

Further, the rotary swinging mechanism further comprises a rotating shaft, and a handle rotating bearing is arranged at the joint of the rotating shaft and the swinging rod.

Further, the rotary swinging mechanism further comprises a handle base fixedly mounted on the box body, the handle base is matched and connected with the handle rotary bearing, and the rotary swinging mechanism is fixedly connected with the box body through the handle base.

Further, the rotary swing mechanism comprises an operation handle in transmission connection with the swing rod, the operation handle comprises a holding part, and the holding part is provided with an arc-shaped structure.

Further, the stretching mechanism further comprises a fixing plate and a limiting block, wherein the fixing plate is fixedly connected with the guide rod, and when the operation handle reaches the set maximum displacement, the limiting block is abutted with the fixing plate.

Further, the medical crane height adjusting device also comprises a reset mechanism which enables the medical crane height adjusting device to recover to an initial state when the rotary swing mechanism is under the action of no external force, wherein the reset mechanism comprises a pair of reset springs and a pair of guide screws fixedly connected with the sliding blocks, and the reset springs are fixedly connected with the guide screws.

Compared with the prior art, the invention has the advantages that:

1. the release mechanism can be triggered when the handle is pushed up or pushed down by rotating the combination of the swinging rod in the swinging mechanism and the sliding block in the stretching mechanism, and the structure is simple, and the operation is simple and convenient;

2. by arranging the second mute component, the resistance and noise in the running process can be sufficiently reduced, and the sliding block is guided to keep transverse movement;

3. the operating handle with the arc-shaped holding part is arranged, so that the comfort level of an operator when the operator holds the operating handle is improved;

4. the handle rotating bearing and the spacer are arranged between the rotating shaft and the swinging rod, so that friction force is reduced, and operation comfort is improved;

5. the first silencing component is arranged at the swinging end, so that the swinging rod has small resistance, low noise and smooth action when driving the sliding block to move;

6. through arranging the buffer pads at the two ends of the rolling bearing, the impact force generated when the swinging rod is contacted with the sliding block is reduced, the service life of the equipment is prolonged, and the noise generated during operation is reduced;

7. the handle base is arranged, so that the handle rotating bearing is fixed on the box body, and the stability of the device is improved;

8. by arranging the limiting block, when the operation handle reaches the set maximum displacement, the further movement of the operation handle is limited;

9. through setting up canceling release mechanical system, realize medical crane tower height adjusting device's automatic re-setting, and can realize that operating personnel can trigger the locking fast after loosening the operation handle.

Drawings

FIG. 1 is an assembly view of a medical boom height adjustment apparatus according to a preferred embodiment of the present invention;

FIG. 2 is an exploded perspective view of the height adjustment device of the medical boom of FIG. 1;

FIG. 3 is an assembly view of the swing mechanism of the height adjustment device of the medical tower of FIG. 1;

FIG. 4 is a partially exploded perspective view of the rotary swing mechanism of FIG. 3;

FIG. 5 is a schematic view of the structure of FIG. 4 at another view angle;

fig. 6 is an exploded view of the muting assembly of fig. 3;

FIG. 7 is a plan cross-sectional view of a swing lever of the rotary swing mechanism of FIG. 3;

FIG. 8 is an assembly view of a stretching mechanism of the medical boom height adjustment apparatus of FIG. 1;

FIG. 9 is a schematic view of a portion of the stretching mechanism of FIG. 7;

FIG. 10 is a plan cross-sectional view of the stretching mechanism of FIG. 8;

FIG. 11 is a partially exploded perspective view of a height adjustment device for a medical tower;

FIG. 12 is a schematic view of a medical boom height adjustment apparatus when an operating handle is depressed;

fig. 13 is a schematic view of the medical boom height adjustment apparatus when the operating handle is pushed up.

Detailed Description

The technical scheme of the invention is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. refer to the azimuth or positional relationship based on the azimuth or positional relationship shown in the drawings. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1 and 2, the medical crane height adjusting apparatus according to the preferred embodiment of the present invention includes a swing mechanism 1 for a professional to operate, a stretching mechanism 2 coupled to the swing mechanism 1, a trigger 21 coupled to the stretching mechanism 2 and capable of triggering a release mechanism, and a reset mechanism 3.

With further reference to fig. 3 to 7, the rotary swing mechanism 1 includes an operation handle 10 that can be pushed down or pushed up, a swing lever 11 that swings clockwise or counterclockwise by the operation handle 10, a handle base 4 fixedly mounted on the case, and a pair of rotation shafts 12 for connecting the operation handle 10 and the rotary swing lever 11. The operating handle 10 includes a grip portion 102, and the grip portion 102 has an arc-shaped structure to improve the comfort of operation. The operating handle 10 is also provided with two symmetrical connection ends 100, the connection ends 100 being provided with through holes 101 for a fixed connection with screws 126. The rotation shaft 12 is provided with a handle connecting end 120 and a swing rod connecting end 121, and the handle connecting end 120 is matched with the connecting end 100 of the operation handle 10 and fixedly connected through a screw 126; the swing rod connecting end 121 is provided with a pin hole 125, and a pin 127 passes through the pin hole 125 to be fixedly connected with the swing rod connecting end 121. The swing rod 11 is symmetrically provided with two connecting holes 110, the swing rod connecting end 121 of the rotating shaft 12 is matched with the connecting holes 110 of the rotating swing rod 11, and after the matching is completed, a pin 127 is arranged in the pin hole 125 of the swing rod connecting end 121, so that the transverse movement of the rotating shaft 12 relative to the rotating swing rod 11 is limited. Therefore, when the operator applies an operation force to the operation handle 10, the operation force can be transmitted to the swing lever 11 through the rotation shaft 12. Further, in order to improve the operation feel, a handle rotating bearing 13 is arranged at the joint of the rotating shaft 12 and the rotary swinging rod 11, the handle rotating bearing 13 is sleeved on the rotating shaft 12, a spacer 131 is arranged between the handle rotating bearing 13 and the rotary swinging rod 11, and the handle rotating bearing 13 is abutted with the rotary swinging rod 11 through the spacer 131, so that friction force is reduced, and the comfort level of operation is improved; the handle base 4 is matched and connected with the handle rotary bearing 13, and the rotary swinging mechanism 1 is fixedly connected with the box body through the handle base 4, so that the stability of the device is improved; specifically, the handle rotating bearing 13 is further provided with a protrusion 130, the protrusion 130 is coupled with the waist-shaped groove 41 of the handle base 4, the handle base 4 is fixedly mounted on the box body, and the rotary swing mechanism 1 is fixed on the box body through the handle base 4. The oscillating lever 11 is provided with a first silencing element 14 and symmetrically provided with two oscillating ends 111, 112. The first silencing component 14 comprises a pair of silencing assemblies 18 connected with two swinging ends 111 and 112 respectively, the silencing assemblies 18 comprise rolling bearings 140 and a pair of buffer pads 16 positioned on two sides of the rolling bearings 140, and the diameter of the buffer pads 16 is larger than that of the rolling bearings 140; when the swing rod 11 contacts the sliding block 20, the buffer pad 16 contacts the sliding block 20 first, so as to greatly reduce the impact force generated during contact, and then the rolling bearing 140 contacts the sliding block 20, so that the noise generated by collision is reduced, the operation hand feeling is improved, and the service life of the rolling bearing 140 is also prolonged. The mute assembly 18 further comprises a pin 15, the pin 15 is fixedly connected with the two swinging ends 111 and 112 respectively, the rolling bearing 140 is sleeved on the pin 15, a limit sleeve 17 is sleeved between the pin 15 and one of the buffer pads 16, and the other buffer pad 16 is sleeved on the pin 15; specifically, the pin 15 is provided with a first fixed end 151 and a second fixed end 152, the rolling bearing 140 is sleeved on the second fixed end 152, the rolling bearing 140 is respectively arranged at the centers of the swinging ends 111 and 112 to limit the movement of the rolling bearing 140, the second fixed end 152 is sleeved with the limit sleeve 17, one end of the rolling bearing 140 is abutted with the first fixed end 151, and the other end is abutted with the limit sleeve 17; a pair of cushioning pads 16 are respectively sleeved on the first fixed end 150 and the stop collar 17.

With further reference to fig. 8 to 10, the stretching mechanism 2 includes a slider 20 coupled with the swing lever 11, a spring bracket 22, a second mute member 39, a pair of stopper blocks 36, and a fixing plate 37. The sliding block 20 is mutually matched with the first mute component 14, specifically, the sliding block 20 is provided with symmetrical two end portions 203 and 204, when no external force acts, a pair of mute assemblies 18 of the swinging ends 111 and 112 are respectively abutted with the corresponding end portions 203 and 204, and when the swinging rod 11 moves, the swinging ends 111 and 112 drive the end portions 203 and 204 of the corresponding sliding block 20 to move. The slider 20 is also provided with a connecting portion 201 and a pair of guide rod mounting portions 205; the connection portion 201 is provided with a through hole 202. The trigger 21 includes a bowden-wire terminal head 211 and a fixing boss 212; preferably, the trigger 21 is a bowden cable. The trigger piece 21 is coupled with the sliding block 20, the bowden cable terminal 211 is coupled with the connection part 201 of the sliding block 20, and the bowden cable terminal 211 can be driven to move by the connection part 201 when the sliding block 20 moves. The spring support 22 includes a support special-shaped groove 223, a fixing groove 220 and a spring fixing groove 222, the trigger piece 21 is matched with the fixing groove 220 of the spring support 22, meanwhile, a fixing boss 212 of the trigger piece 21 is abutted with a side wall 224 of the spring support 23, when the sliding block 20 drives the bowden cable terminal head 211 to move, the fixing boss 212 is kept motionless, the trigger piece 21 is in a stretching state, and a release mechanism (not shown) is triggered. The second mute member 39 includes a pair of guide rods 33, a bearing mount 31, and a pair of slide bearings 32 enclosed in the stretching mechanism 2. The bearing mount 31 is provided with a pair of bearing mounting holes 311, mount profiled grooves 312, and a pair of stopper fixing holes 313; the inner wall 225 of the spring bracket 22 is abutted with the bearing mounting seat 31, and the screw 126 passes through the bracket special-shaped groove 223 to be fixedly connected with the bearing mounting seat 31, so that the spring bracket 22 is fixedly arranged on the bearing mounting seat 31; the sliding bearing 32 is sleeved on the guide rod 33; specifically, the sliding bearing 32 is embedded in the bearing mounting hole 311, and the sliding bearing 32 is fixedly connected with the bearing mounting hole 311 through an interference fit manner (the connection manner is in the prior art, and details are not repeated here). The guide rod 33 is coupled with the sliding bearing 32, the sliding bearing 32 is sleeved on the guide rod 33, and the guide rod 33 can horizontally move along the length direction relative to the sliding bearing 32. The pair of guide rods 33 slide in the sliding bearings 32 and drive the sliding speed 20 to move back and forth, and the sliding bearings 32 are arranged in the bearing mounting seat 31 in a sealing manner to form a double-guide-rail sealing sliding block mechanism, so that the resistance and noise in the running process can be sufficiently reduced; therefore, the second mute parts 39 can sufficiently reduce resistance and noise during operation and guide the slider 20 to maintain lateral movement; the guide rod 33 is provided with guide rod screw holes 331, 332 at both ends thereof, respectively. One end of the guide rod 33 is embedded in the guide rod mounting part 205 of the sliding block 20 and fixedly connected with the sliding block 20, and the other end of the guide rod 33 is fixedly connected with the fixed plate 37; the fixing plate 37 is provided with a pair of fixing plate holes 371, and the screw 126 is screw-coupled with the fixing plate holes 371 and the guide rod screw holes 331 to fix the fixing plate 37 and the guide rod 33 to each other. The guide rod 33 and the slide block 20 are fixedly connected by the screw 126 through the guide rod screw hole 332 of the guide rod 33 and the guide rod mounting portion 205 of the guide rod 20. The stopper 36 is disposed in the stopper fixing hole 313 of the bearing mount 31 and protrudes out of the bearing mount 31, and when the operating handle 10 reaches a set maximum displacement, the fixing plate 37 fixedly connected to the guide rod 33 abuts against the stopper 36 to limit the guide rod 33 to further move.

With further reference to fig. 11, the return mechanism 3 includes a pair of return springs 35 and a pair of guide screws 34 respectively connected to the return springs 35. A return spring 35 is connected between the guide screw 34 and the spring support 22. Specifically, the return spring 35 is provided with a first hook 351 and a second hook 352, the first hook 351 is hung on the spring fixing groove 222 of the spring bracket 22, and the second hook 352 is hung on the guide screw 34. The guide screw 34 is fixedly inserted into the through hole 202 of the slider 20.

With further reference to fig. 12 and 13, in the use process of the medical crane of the present invention, an operator pushes (as shown by arrow B) the operation handle 10 upwards, the operation handle 10 drives the swing rod 11 to rotate anticlockwise through the rotation shaft 12, the swing end 112 of the swing rod 11 pushes the end 204 of the sliding block 20 backwards through the mute assembly 18, the swing end 111 of the swing rod 11 moves forwards and moves away from the end 203 of the sliding block 20, so that the sliding block 20 moves backwards, the bowden cable terminal 211 fixed in the sliding block 20 moves backwards, the trigger piece 21 is in a stretched state, the trigger release mechanism releases the gas spring with height adjustment (this is the prior art, which is not repeated here), so that the height adjustment can be performed on the box, meanwhile, the sliding block 20 drives the guide rod 33 to move backwards, and the guide rod 33 moves in the sliding bearing 32, so that the resistance and noise in the running process can be sufficiently reduced; when the sliding block 20 moves backwards, the guide screw 34 is driven to move backwards, the first clamping hook 351 of the return spring 35 is fixed in the spring fixing groove 222 and is kept still, and the guide screw 34 drives the second clamping hook 352 to move backwards, so that the return spring 35 is in a stretching state; when the whole box body reaches the expected position, the operation handle 10 is released, the return spring 35 quickly returns to the initial state, the sliding block 20 is driven to quickly move forwards through the guide screw 34, the return spring returns to the initial position, the sliding block 20 drives the trigger piece 21 to quickly reset, the gas spring is quickly locked, the whole box body is stopped at the expected position, meanwhile, the sliding block 20 drives the swinging end 112 of the swinging rod 11 abutting against the sliding block 20 and the swinging end 111 of the swinging rod 11 far away from the sliding block 20 to move clockwise, the return spring returns to the initial position, when the swinging end 111 of the swinging rod 11 abuts against the sliding block 20, the buffer pad 16 firstly contacts with the sliding block 20, the impact force generated by the swinging rod 11 in the moving process is greatly reduced, then the first mute part 14 contacts with the sliding block 20, meanwhile, the swinging rod 11 drives the operation handle 10 to return to the initial state through the handle rotating bearing 13, and the whole control device returns to the initial state. When the operator pushes down (as indicated by arrow a) the operating handle 10, the operating handle 10 drives the rotation shaft 12 to rotate clockwise, so that the swing lever 11 rotates clockwise following the rotation shaft 12, the swing end 111 of the swing lever 11 pushes the end 203 of the slider 20 backward, the swing end 112 of the swing lever 11 moves forward, away from the end 204 of the slider 20, so that the slider 20 moves backward, when the entire case reaches the desired position, the operating handle 10 is released, the return spring 35 returns to the original state, thereby driving the swing end 111 of the swing lever 11 abutting against the slider 20 and the swing end 112 of the swing lever 11 away from the slider 20 to move counterclockwise, returning to the original position, and the rest is the same as the movement pattern of pushing up the operating handle 10, which is omitted here. Therefore, the medical crane height adjusting device can trigger the release mechanism to adjust the height of the crane when pushing up or pushing down the handle according to the habit or preference of an operator, and is not limited by an operation mode, so that the operation logic is simple and quick; the medical crane height adjusting device is simple in integral structure and low in cost, and the resetting mechanism can be used for realizing quick triggering and locking after an operator releases an operation handle; the first mute component and the second mute component can sufficiently reduce resistance and noise in the running process, and guide the sliding block to keep transverse movement, so that the handle is in a mute state when in bidirectional operation.

The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The medical crane height adjusting device is characterized by comprising a rotary swing mechanism (1) for a professional to operate, a stretching mechanism (2) matched with the rotary swing mechanism (1) and a trigger piece (21) matched with the stretching mechanism (2) and capable of triggering a release mechanism; the rotary swinging mechanism (1) comprises an operation handle (10) capable of being pushed down or pushed up and a swinging rod (11) driven by the operation handle (10) to swing clockwise or anticlockwise, and the swinging rod (11) is provided with a first silencing component (14); the stretching mechanism (2) comprises a sliding block (20), and the first silencing component (14) is mutually matched with the sliding block (20);

the swinging rod (11) is symmetrically provided with two swinging ends (111, 112), and the first silencing component (14) comprises a pair of silencing assemblies (18) respectively connected with the two swinging ends (111, 112);

the mute assembly (18) comprises a rolling bearing (140) and a pair of cushion pads (16) positioned on both sides of the rolling bearing (140);

the mute assembly (18) further comprises a pin (15), the pin (15) is fixedly connected with the two swing ends (111, 112) respectively, the rolling bearing (140) is sleeved on the pin (15), a limit sleeve (17) is sleeved between the pin (15) and one of the buffer pads (16), and the other buffer pad (16) is sleeved on the pin (15).

2. The medical crane height adjustment device according to claim 1, wherein the stretching mechanism (2) further comprises a second silencing element (39), the second silencing element (39) comprising a pair of guide rods (33) and a pair of slide bearings (32) enclosed in the stretching mechanism (2), the guide rods (33) being supported in the slide bearings (32).

3. The medical crane height adjusting device according to claim 1, wherein the rotary swing mechanism (1) further comprises a rotary shaft (12), and a handle rotary bearing (13) is arranged at the joint of the rotary shaft (12) and the swing rod (11).

4. A medical crane height adjusting device according to claim 3, wherein the rotary swinging mechanism (1) further comprises a handle base (4) fixedly mounted on the box body, the handle base (4) is matched with a handle rotary bearing (13), and the rotary swinging mechanism (1) is fixedly connected with the box body through the handle base (4).

5. The medical crane height adjusting device according to claim 1, wherein the rotary swing mechanism (1) comprises an operating handle (10) in driving connection with a swing lever (11), the operating handle (10) comprising a grip portion (102), the grip portion (102) having an arc-shaped structure.

6. The medical crane height adjusting device according to claim 1, wherein the stretching mechanism (2) further comprises a fixing plate (37) fixedly connected with the guide rod (33) and a limiting block (36), and when the operating handle (10) reaches a set maximum displacement, the limiting block (36) is abutted with the fixing plate (37).

7. A medical boom height adjustment apparatus according to any one of claims 1-6, further comprising a return mechanism (3), said return mechanism (3) comprising a pair of return springs (35) and a pair of guide screws (34) fixedly connected to the slider (20), said tension mechanism comprising a spring support (22), said return springs (35) being connected between the guide screws (34) and the spring support (22).