CN110561971B

CN110561971B - Caster and endoscope trolley

Info

Publication number: CN110561971B
Application number: CN201910939669.XA
Authority: CN
Inventors: 孙宇; 王聪; 邓安鹏
Original assignee: Chongqing Jinshan Medical Technology Research Institute Co Ltd
Current assignee: Chongqing Jinshan Medical Technology Research Institute Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2021-04-09
Anticipated expiration: 2039-09-30
Also published as: CN110561971A

Abstract

The invention provides a caster and an endoscope trolley, and belongs to the technical field of medical instruments. It has solved the current platform truck and has adjusted the displacement, be unfavorable for adjusting the problem of the position of platform truck in narrow and small space when turning to. The caster comprises a supporting seat, wherein the supporting seat is provided with a vertically arranged mounting hole, a rolling ball is arranged in the mounting hole, the lower part of the supporting seat is provided with a limiting blocking edge for preventing the rolling ball from falling off from the lower end of the mounting hole, the supporting seat is provided with a connecting seat acting on the rolling ball and used for preventing the rolling ball from falling off from the upper end of the mounting hole, and the lower part of the rolling ball extends out of the lower end of the mounting hole under the action of the connecting seat; the endoscope trolley comprises a trolley frame and the caster. The caster wheels can steer instantly, so that the trolley does not generate adjustment displacement when steering; the locking and unlocking can be completed only by one operation action; the shock attenuation is effectual.

Description

Caster and endoscope trolley

Technical Field

The invention belongs to the technical field of medical instruments, and relates to a caster and an endoscope trolley.

Background

The trolley is used for bearing medical equipment and is widely applied to the medical field. The Chinese patent discloses a novel trolley (with an authorization notice number of CN 203220441U), which comprises a trolley frame, wherein the bottom of the trolley frame is provided with a caster wheel, and the caster wheel is provided with a brake. It has the following problems: 1. the rotating shaft connected with the trolley frame by the trundles does not pass through the circle centers of the trundles, so that the trolley is pushed forwards and backwards firstly, and then the trolley is pushed leftwards and rightwards, so that the trolley has adjustment displacement, and the adjustment of the position of the trolley in a narrow space is not facilitated; 2. the trolley can be fixed only by locking the brake brakes on the trundles one by one, the locking action is complex, and the brake brakes are not easy to step in a narrow space; 3. when the ground with poor flatness moves, the trolley can generate large vibration, which is unfavorable for equipment on the trolley.

Disclosure of Invention

The invention aims to solve the problems in the prior art, provides a caster capable of realizing instant steering, and also provides an endoscope trolley without adjusting displacement during steering.

The purpose of the invention can be realized by the following technical scheme:

the truckle, including the supporting seat, the supporting seat on have the mounting hole of vertical setting, the mounting hole in be equipped with can rolling spin, the lower part of supporting seat is equipped with and is used for preventing the spacing fender edge that the lower extreme of spin follow mounting hole deviate from, the supporting seat on be equipped with and be used for on the spin preventing the connecting seat that the spin deviates from the upper end of mounting hole the effect of connecting seat is down the lower extreme of mounting hole is stretched out to the lower part of spin.

The aperture of mounting hole slightly is greater than the diameter of spin, and the thickness of supporting seat is about 1/3 of spin diameter, and spacing fender edge and supporting seat integrated into one piece have restricted the motion of spin on vertical under the effect of spacing fender edge and connecting seat. The rolling ball can drive the support seat and the upper component thereof to move, and the instant steering can be realized.

In the caster, the limit stop edge is annular and is coaxial with the mounting hole, the diameter of the hole surrounded by the limit stop edge is smaller than that of the rolling ball, and the center of the rolling ball is higher than the limit stop edge.

In foretell truckle, the supporting seat on have a plurality of vertical connecting holes that set up, the connecting seat on be fixed with the spliced pole that equals and the one-to-one setting with connecting hole quantity, the spliced pole wear to establish in the connecting hole that sets up with it, the lower extreme of spliced pole is equipped with the spacing flange that the external diameter is greater than the connecting hole aperture. During the equipment, earlier with the spin from top to bottom put into the mounting hole, cover the connecting seat afterwards, at last through the spliced pole of taking spacing flange with connecting seat and supporting seat be connected to together, made things convenient for the installation of spin.

In foretell truckle, the connecting seat on have a plurality of vertical connecting holes that set up, the supporting seat on be fixed with the spliced pole that equals and the one-to-one setting with connecting hole quantity, the spliced pole wear to establish in the connecting hole that sets up with it, the upper end of spliced pole is equipped with the spacing flange that the external diameter is greater than the connecting hole aperture.

In the caster, a driving assembly for driving the connecting seat to move upwards is arranged between the connecting seat and the supporting seat, and when the connecting seat moves upwards to the maximum position under the action of the driving assembly, the rolling ball is in rolling contact with the limiting blocking edge. When drive assembly did not drive the connecting seat upward movement, the connecting seat supported on the spin under the action of gravity, and the spin supported on spacing fender edge, and the frictional force between spin and the spacing fender edge is big, and the spin does not roll, has slight clearance between the lower terminal surface of spacing flange and connecting hole this moment, and the size in this clearance is the biggest stroke that the connecting seat can the upward movement. When the driving assembly drives the connecting seat to move upwards to the maximum position, the limiting flange is abutted against the lower end face of the connecting hole, and the rolling ball can roll freely in the mounting hole at the moment.

In the caster, the driving assembly comprises a first electromagnetic coil arranged on the supporting seat and a second electromagnetic coil arranged on the connecting seat and opposite to the first electromagnetic coil, and when the first electromagnetic coil and the second electromagnetic coil are electrified, a magnetic field generated by the first electromagnetic coil and a magnetic field generated by the second electromagnetic coil repel each other. When the first electromagnetic coil and the second electromagnetic coil are electrified, the supporting seat and the connecting seat move in opposite directions under the repulsion action of the magnetic field generated by the first electromagnetic coil and the magnetic field generated by the second electromagnetic coil, the distance between the connecting seat and the limiting blocking edge is increased, the friction force between the rolling ball and the limiting blocking edge is reduced, and the rolling ball rolls freely.

In the caster, the first electromagnetic coil is annular and is arranged around the mounting hole, and the second electromagnetic coil is annular and is arranged around the rolling ball.

In the truckle, the lower part of connecting seat is equipped with and is hemispherical and the coaxial shrinkage pool that sets up of mounting hole, the upper portion of spin stretches into in the shrinkage pool, the inner wall of spin and shrinkage pool between be equipped with a plurality of balls. When the driving assembly does not drive the connecting seat to move upwards, the circle of the spherical surface of the concave hole is concentric with the circle center of the rolling ball, at the moment, the distance from each point on the inner wall of the concave hole to the spherical center of the rolling ball is equal, and the distance from the rolling ball to the inner wall of the concave hole is equal to the diameter of the rolling ball. When the drive assembly drives the connecting seat to move upwards, the concave hole is driven to move upwards, the distance from the rolling ball to the inner wall of the concave hole is increased, and each rolling ball can roll freely.

In the caster, the support base is provided with a flange extending into the concave hole, and the flange has a cycloid contour. When the rolling ball rolls, the rolling ball does rolling motion and small displacement motion, and the cycloid contour can effectively provide small displacement, so that the rolling ball is prevented from being stuck in the motion process.

The endoscope trolley comprises a trolley frame, and the trundles are arranged at the bottom of the trolley frame. Four trundles are generally arranged on the trolley frame, and the four trundles all adopt the structure.

In the above endoscope cart, a damper is provided between the caster and the cart frame. When the trolley moves on an uneven road surface, the damper attenuates the vibration, and the shock absorption effect is achieved.

In the endoscope trolley, the trolley frame is provided with a power supply. The power supply is arranged to provide power for the drive assembly and simultaneously for the equipment on the trolley and the surgical instruments during the surgical procedure. The first electromagnetic coil and the second electromagnetic coil in each caster wheel arranged at the bottom of the trolley frame are both connected with the power supply.

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

the trundles can be steered in real time, so that the trolley does not generate adjustment displacement when being steered, and the steering device is suitable for steering the trolley in a narrow space; the trundles are locked through electric control, so that the locking action is simple, and the simultaneous locking of the trundles is easy to realize; the damper is arranged between the trundle and the trolley frame, so that vibration is attenuated, and the damping effect is good.

Drawings

Fig. 1 is a sectional view of a caster provided by the present invention.

FIG. 2 is a cross-sectional view of a flange provided by the present invention.

Fig. 3 is a schematic structural view of the trolley provided by the invention.

In the figure, 1, a support seat; 2. mounting holes; 3. rolling a ball; 4. a limiting blocking edge; 5. a connecting seat; 6. connecting holes; 7. connecting columns; 8. a limiting flange; 9. a first electromagnetic coil; 10. a second electromagnetic coil; 11. concave holes; 12. a ball; 13. a flange; 14. a bogie frame; 15. a damper; 16. a power source.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

Example one

The truckle as shown in figure 1, including supporting seat 1, vertical mounting hole 2 that link up the setting is seted up at the middle part of supporting seat 1, be equipped with rolling spin 3 in the mounting hole 2, the diameter of spin 3 slightly is less than the aperture of mounting hole 2, the thickness of supporting seat 1 is about 1/3 of spin 3 diameter, be equipped with the spacing fender edge 4 that is used for preventing spin 3 to deviate from the lower extreme of mounting hole 2 in the lower part of supporting seat 1, spacing fender edge 4 is annular and with the coaxial setting of mounting hole 2, the diameter in the hole that is enclosed by spacing fender edge 4 is less than spin 3's diameter, spin 3's centre of sphere is higher than spacing fender edge 4.

As shown in fig. 1, the support base 1 is provided with a connecting base 5 acting on the rolling ball 3 for preventing the rolling ball 3 from falling out of the upper end of the mounting hole 2, and the lower part of the rolling ball 3 extends out of the lower end of the mounting hole 2 under the action of the connecting base 5. As shown in fig. 1, the supporting seat 1 is provided with a plurality of vertically arranged connecting holes 6, the connecting holes 6 are distributed along the central line of the mounting hole 2 in an annular array manner, connecting posts 7 which are equal in number to the connecting holes 6 and are arranged in a one-to-one correspondence manner are fixed on the connecting seat 5, the connecting posts 7 are arranged in the connecting holes 6 which are arranged in a corresponding manner in a penetrating manner, and the lower end of each connecting post 7 is provided with a limiting flange 8 of which the outer diameter is larger than the aperture. The limiting flange 8 in this embodiment serves the purpose of limiting the connecting column 7 from coming out of the connecting hole 6. During the equipment, will spin 3 from top to bottom put into mounting hole 2 earlier, cover connecting seat 5 afterwards, connect connecting seat 5 and supporting seat 1 together through spliced pole 7 of taking spacing flange 8 at last, made things convenient for spin 3's installation.

A driving component for driving the connecting seat 5 to move upwards is arranged between the connecting seat 5 and the supporting seat 1, and the rolling ball 3 is in rolling contact with the limiting blocking edge 4 when the connecting seat 5 moves upwards to the maximum position under the action of the driving component. When drive assembly did not drive connecting seat 5 upward movement, connecting seat 5 supported under the action of gravity and leaned on spin 3, and spin 3 supported and leaned on spacing keeping off along 4, and spin 3 and spacing frictional force that keeps off between along 4 are big, and spin 3 does not roll, had slight clearance between the lower terminal surface of spacing flange 8 and connecting hole 6 this moment, and the size in this clearance is the biggest stroke that connecting seat 5 can the upward movement. When the driving assembly drives the connecting base 5 to move upwards to the maximum position, the limiting flange 8 is abutted against the lower end face of the connecting hole 6, and the rolling ball 3 can roll freely in the mounting hole 2 at the moment.

As shown in fig. 1, the driving assembly includes a first electromagnetic coil 9 disposed on the supporting base 1 and a second electromagnetic coil 10 disposed on the connecting base 5 and opposite to the first electromagnetic coil 9, and when the first electromagnetic coil 9 and the second electromagnetic coil 10 are energized, a magnetic field generated by the first electromagnetic coil 9 and a magnetic field generated by the second electromagnetic coil 10 repel each other. When the N pole of the magnetic field generated by the first electromagnetic coil 9 is upward, the N pole of the magnetic field generated by the second electromagnetic coil 10 is downward; when the S pole of the magnetic field generated by the first electromagnetic coil 9 is upward, the S pole of the magnetic field generated by the second electromagnetic coil 10 is downward. When the first electromagnetic coil 9 and the second electromagnetic coil 10 are electrified, the supporting seat 1 and the connecting seat 5 move in opposite directions under the repulsion action of the magnetic field generated by the first electromagnetic coil 9 and the magnetic field generated by the second electromagnetic coil 10, the distance between the connecting seat 5 and the limiting blocking edge 4 is increased, the friction force between the rolling ball 3 and the limiting blocking edge 4 is reduced, and the rolling ball 3 rolls freely. In this embodiment, the first electromagnetic coil 9 is annular and disposed around the mounting hole 2, and the second electromagnetic coil 10 is annular and disposed around the rolling ball 3.

As shown in fig. 1, a hemispherical concave hole 11 is formed in the lower portion of the connecting seat 5 and is coaxial with the mounting hole 2, the upper portion of the rolling ball 3 extends into the concave hole 11, and a plurality of balls 12 are arranged between the rolling ball 3 and the inner wall of the concave hole 11. When the driving component does not drive the connecting seat 5 to move upwards, the circle of the spherical surface of the concave hole 11 is concentric with the circle center of the rolling ball 3, at the moment, the distance from each point on the inner wall of the concave hole 11 to the spherical center of the rolling ball 3 is equal, and the distance from the rolling ball 3 to the inner wall of the concave hole 11 is equal to the diameter of the ball 12. When the drive assembly drives the connecting seat 5 to move upwards, the concave hole 11 is driven to move upwards, the distance from the rolling ball 3 to the inner wall of the concave hole 11 is increased, and each rolling ball 12 can roll freely.

As shown in fig. 2, the supporting base 1 has a flange 13 extending into the recess 11, and the flange 13 has a cycloid contour. When the rolling ball 3 rolls, the ball 12 performs rolling motion and small displacement motion, and the cycloid contour can effectively provide small displacement, so that the ball cannot be stuck in the motion process. Wherein, the rolling ball 3 is a steel ball, and the round ball 12 is a steel ball.

Example two

The structural principle of this embodiment is the same basically with the structural principle of embodiment one, and the difference lies in, has the connecting hole 6 of a plurality of vertical settings on the connecting seat 5, is fixed with the spliced pole 7 that equals and the one-to-one setting with connecting hole 6 quantity on the supporting seat 1, and spliced pole 7 wears to establish in the connecting hole 6 that corresponds the setting with it, and the upper end of spliced pole 7 is equipped with the external diameter and is greater than the spacing flange 8 in connecting hole 6 aperture. Wherein, the connecting holes 6 are distributed along the central line of the mounting hole 2 in an annular array.

EXAMPLE III

The endoscope cart shown in fig. 3 includes a cart frame 14, four casters as described in the first embodiment or the second embodiment are provided on the bottom of the cart frame 14, and a damper 15 is provided between each caster and the cart frame 14 to damp vibration.

As shown in fig. 3, a power supply 16 is provided on the trolley frame 14, and the power supply 16 is an Uninterruptible Power Supply (UPS) 16 that can supply power to devices such as an image processor and a cold light source placed on the trolley, as well as to power the drive components in the casters. A lock/unlock button is provided on the trolley frame 14 for controlling the drive assembly in the caster.

When the locking/unlocking button is stepped to an unlocking position by feet, the power supply 16 supplies power to the first electromagnetic coil 9 and the second electromagnetic coil 10, the supporting seat 1 and the connecting seat 5 move in opposite directions under the repulsion action of a magnetic field generated by the first electromagnetic coil 9 and a magnetic field generated by the second electromagnetic coil 10, the gap between the supporting seat 1 and the connecting seat 5 is increased, the flange 13 and the ball 12 generate a gap, the caster wheel is unlocked, the rolling ball 3 can roll freely at the moment, and the trolley can be pushed freely in any direction. When the locking/unlocking button is stepped to the locking position by feet, the power supply 16 stops supplying power to the first electromagnetic coil 9 and the second electromagnetic coil 10, the connecting seat 5 falls under the action of gravity of the trolley, the gap between the connecting seat 5 and the supporting seat 1 is reduced, the flange 13 supports the ball 12, the ball 12 and the rolling ball 3 are supported tightly and locked, the trundles are locked under huge friction force, the trundles cannot roll, and the trolley is fixed.

Through the structure setting of this embodiment, can improve the orbit of platform truck, when promoting the change of platform truck direction, do not have the displacement of adjustment direction, can reduce vibration when unevenness ground promotes, locking and unblock can accomplish as long as an operation.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A caster comprises a supporting seat (1), wherein the supporting seat (1) is provided with a vertically arranged mounting hole (2), a rolling ball (3) capable of rolling is arranged in the mounting hole (2), the lower part of the supporting seat (1) is provided with a limiting blocking edge (4) used for preventing the rolling ball (3) from dropping out from the lower end of the mounting hole (2), the supporting seat (1) is provided with a connecting seat (5) which acts on the rolling ball (3) and is used for preventing the rolling ball (3) from dropping out from the upper end of the mounting hole (2), and the lower part of the rolling ball (3) extends out of the lower end of the mounting hole (2) under the action of the connecting seat (5); a driving assembly for driving the connecting seat (5) to move upwards is arranged between the connecting seat (5) and the supporting seat (1), and when the connecting seat (5) moves upwards to the maximum position under the action of the driving assembly, the rolling ball (3) is in rolling contact with the limiting blocking edge (4); the electromagnetic coil driving mechanism is characterized in that the driving assembly comprises a first electromagnetic coil (9) arranged on the supporting seat (1) and a second electromagnetic coil (10) arranged on the connecting seat (5) and opposite to the first electromagnetic coil (9), and when the first electromagnetic coil (9) and the second electromagnetic coil (10) are electrified, a magnetic field generated by the first electromagnetic coil (9) and a magnetic field generated by the second electromagnetic coil (10) repel each other.

2. The caster wheel according to claim 1, wherein the limit stop edge (4) is annular and is arranged coaxially with the mounting hole (2), the diameter of the hole surrounded by the limit stop edge (4) is smaller than that of the rolling ball (3), and the center of the rolling ball (3) is higher than the limit stop edge (4).

3. The caster wheel according to claim 1, wherein the supporting seat (1) is provided with a plurality of vertically arranged connecting holes (6), the connecting seats (5) are fixed with connecting columns (7) which are equal in number to the connecting holes (6) and are arranged in a one-to-one correspondence manner, the connecting columns (7) are arranged in the connecting holes (6) which are arranged in a corresponding manner in a penetrating manner, and the lower ends of the connecting columns (7) are provided with limiting flanges (8) of which the outer diameters are larger than the hole diameters of the connecting holes (6).

4. The caster wheel according to claim 1, wherein the lower part of the connecting seat (5) is provided with a hemispherical concave hole (11) which is coaxial with the mounting hole (2), the upper part of the rolling ball (3) extends into the concave hole (11), and a plurality of round balls (12) are arranged between the rolling ball (3) and the inner wall of the concave hole (11).

5. The caster according to claim 4, characterized in that said support (1) has a flange (13), said flange (13) having a cycloid profile.

6. An endoscope trolley, characterized in that it comprises a trolley frame (14), the bottom of the trolley frame (14) being provided with a caster according to any one of claims 1-5.

7. An endoscope trolley according to claim 6, characterized in that a damper (15) is provided between the caster and the trolley frame (14).

8. An endoscope trolley according to claim 6, characterized in that the trolley frame (14) is provided with a power supply (16).