CN115716385A - Parking device and doctor's control cabinet - Google Patents

Abstract

The invention provides a parking device and a doctor console, and relates to the technical field of mechanical braking. Compared with the prior art, the caster wheel control device has the advantages that an operator can know the working state of the caster wheel through the foot feeling and the position state of the pedal, so that misoperation is avoided.

Description

Parking device and doctor's control cabinet

Technical Field

The invention relates to the technical field of mechanical braking, in particular to a parking device and a doctor console.

Background

In the using process of the mobile vehicle, the movement and the stop of the vehicle body need to be controlled through the trundles, so that the position of the vehicle body can be adjusted at any time. For example, a central control caster is arranged at the lower part of a bottom plate of a doctor console, the central control caster is provided with a parking mechanism, and a wrench or a pedal is generally used for repeatedly rotating to lock and unlock the central control caster.

Disclosure of Invention

The invention aims to solve the problems that: how to provide a parking device to reduce the possibility of misoperation in parking.

The invention provides a parking device, which is used for a doctor console, wherein the doctor console comprises a bottom plate and trundles arranged on the bottom plate, and the parking device comprises:

the pedal mechanism comprises a pedal, a support, a swing rod and a spring, wherein the support is used for being installed on the bottom plate, the pedal is movably connected to the support, one end of the spring is connected to the pedal, the other end of the spring is connected to the support, a sliding groove and a protruding block are arranged on the pedal, one end of the swing rod is hinged to the support, a sliding rod is arranged at the other end of the swing rod and used for sliding along the sliding groove, the protruding block is used for supporting the sliding rod, when depression force is applied to the pedal and the pedal moves to the maximum stroke, the sliding rod is used for moving to the position, away from the direction of the bottom plate, of the sliding groove, after pressure is released to the pedal, the sliding groove is used for guiding the sliding rod to move to the protruding block, and when the position, away from the direction of the bottom plate, of the sliding rod moves to the protruding block from the position, away from the direction of the bottom plate, the movement stroke of the pedal is a first distance;

drive mechanism, it includes driving shaft, driven shaft, rack and pinion mechanism, primary shaft bearing and secondary shaft bearing, primary shaft bearing with the secondary shaft bearing interval is installed on the bottom plate, the driving shaft rotate connect in primary shaft bearing, just the footboard passes through rack and pinion mechanism with the driving shaft is connected, the driven shaft rotate connect in secondary shaft bearing, just the one end of driven shaft be used for with the truckle is connected, the rotation of driven shaft is used for changing the operating condition of truckle, the driving shaft is close to the tip of driven shaft is provided with first tooth structure, the driven shaft is close to the tip of driving shaft is provided with second tooth structure, first tooth structure be used for with second tooth structure clearance fit connects, first tooth structure with the intertooth clearance of second tooth structure is used for compensating first distance.

Compared with the prior art, the parking device provided by the invention has the following beneficial effects that:

the parking device can realize locking and unlocking of the trundle by repeatedly treading the pedal, can effectively prevent the possibility of misoperation, and particularly, when an operator treads the pedal, the pedal can move towards the direction close to the bottom plate relative to the support, and the spring is in a compressed energy storage state; when the trundle needs to be switched to a locking state, an operator can apply a downward force on the pedal to enable the pedal to move towards the direction close to the bottom plate and enable the pedal to move to the maximum stroke (namely the pedal continues to apply pressure and does not continue to move towards the direction close to the bottom plate), at the moment, the sliding rod moves from the position, close to the direction of the bottom plate, of the sliding chute to the position, away from the direction of the bottom plate, of the sliding chute, the pedal drives the driving shaft to rotate through the gear rack mechanism, the driving shaft drives the driven shaft to rotate through the first tooth structure and the second tooth structure, so that the driven shaft switches the trundle to the locking state, when the operator releases the pedal, the pedal is driven to rebound (the pedal moves towards the direction away from the bottom plate) under the action of the elastic force of the spring, at the moment, the sliding chute guides the sliding rod to fall on the lug, the lug plays a role of supporting the sliding rod, so that the pedal does not continue to rebound after short rebound, when the sliding rod moves from the position, away from the direction of the sliding chute, away from the bottom plate, the rebound stroke of the pedal is a first distance, the driving shaft is driven by the rack mechanism to rotate, at the moment, so that the distance between teeth of the pedal is not generated in the rebound process of the rebound; when the truckle needs to be switched into a walking state, the operator can exert the pushing down force to the footboard and make it move towards being close to the bottom plate direction (the displacement is the first distance), in this process, the slide bar will leave the lug, and move to the position department that the bottom plate direction was kept away from to the spout under the guide of spout, when the operator loosens the footboard, will drive the footboard under the effect of the elastic force of spring and take place to kick-back, the slide bar is kept away from the position department that the bottom plate direction was kept away from to the spout by the spout this moment and is removed to the position department that the spout is close to the bottom plate direction, in this process, the footboard passes through gear rack mechanism and drives the driving shaft and short for the first tooth structure takes place the contact with the second tooth structure, after loosening the footboard, the driving shaft drives the driven shaft and rotates under the effect of spring, thereby switch the truckle into a walking state. Compared with the prior art, the parking device has the advantages that locking and unlocking of the caster wheels can be realized by treading the pedal in one direction through the pedal, so that locking and unlocking circulation operation of the caster wheels is realized, an operator has obvious paragraph feeling in the treading process of the pedal, the feedback is obvious, the operator can know the working state of the caster wheels through the foot feeling and the position state of the pedal, and misoperation is avoided.

Optionally, the sliding groove and the protrusion are both in a heart-shaped structure, a tip of the heart-shaped structure is used for facing the bottom plate, and the protrusion is located at the center of the sliding groove.

Optionally, an inclined surface structure is arranged in the sliding groove, and the inclined surface structure is used for guiding the sliding rod to move to the protruding block.

Optionally, the bracket includes a connecting plate and a vertical frame, the connecting plate is used for being installed on the bottom plate, and the vertical frame is used for being connected to an end face, deviating from the bottom plate, of the connecting plate.

Optionally, the pedal mechanism further comprises a guide rail, the pedal is connected to the vertical frame through the guide rail, and the pedal is used for moving towards or away from the connecting plate.

Optionally, the cross section of the pedal is in an inverted L shape, and the pedal includes a vertical portion and a bent portion, and when the pedal is applied with a pressing force in a direction close to the connecting plate and moves to a maximum stroke, the bent portion is configured to abut against the vertical frame.

Optionally, the pedal mechanism further comprises a square block and a round bar, the round bar is connected to the connecting plate, the square block is connected to the pedal, the square block is provided with a hole structure matched with the round bar in shape, the hole structure and the round bar are coaxially arranged, and the spring sleeve is arranged on the round bar.

Optionally, the rack-and-pinion mechanism includes a gear and a rack, the gear is connected to the driving shaft, the rack is connected to the pedal, and the gear is in transmission connection with the rack.

Optionally, the transmission mechanism further comprises a torsion spring, the driving shaft is sleeved with the torsion spring, one end of the torsion spring is connected to the gear, and the other end of the torsion spring is used for being connected with the bottom plate.

In addition, the invention also provides a doctor console which comprises the parking device.

Since the technical improvement and the technical effect obtained by the doctor console are the same as those of the parking device, the technical effect of the doctor console will not be described in detail.

Drawings

FIG. 1 is a first schematic structural diagram of a parking device according to an embodiment of the present invention;

FIG. 2 is a second schematic structural diagram of a parking device according to an embodiment of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 1 taken at I;

FIG. 4 is an enlarged view of a portion II of FIG. 2;

FIG. 5 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

FIG. 6 isbase:Sub>A second cross-sectional view taken along line A-A of FIG. 2.

Description of reference numerals:

1. a pedal; 11. a chute; 111. an unlocking position; 112. a rebound position; 1121. a first bounce position; 1122. a second bounce position; 113. a locked position; 12. a bump; 13. a bevel structure; 2. a support; 21. a connecting plate; 22. a vertical frame; 3. a swing rod; 31. a slide bar; 4. a spring; 51. a drive shaft; 511. a first tooth structure; 52. a driven shaft; 521. a second tooth structure; 53. a first bearing housing; 54. a second bearing housing; 6. a rack and pinion mechanism; 61. a gear; 62. a rack; 7. a guide rail; 8. a torsion spring; 100. a caster wheel; 200. a base plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on those shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Also, in the drawings, the Z-axis represents a vertical, i.e., up-down position, and a positive direction of the Z-axis (i.e., an arrow direction of the Z-axis) represents up, and a negative direction of the Z-axis (i.e., a direction opposite to the positive direction of the Z-axis) represents down; in the drawings, the X-axis represents the lateral, i.e., left-right, position, and the positive direction of the X-axis (i.e., the arrow direction of the X-axis) represents the right, and the negative direction of the X-axis (i.e., the direction opposite to the positive direction of the X-axis) represents the left; in the drawings, the Y-axis indicates the longitudinal direction, i.e., the front-rear position, and the positive direction of the Y-axis (i.e., the arrow direction of the Y-axis) indicates the rear direction and the negative direction of the Y-axis (i.e., the direction opposite to the positive direction of the Y-axis) indicates the front direction.

It should also be noted that the foregoing Z-axis, X-axis, and Y-axis are meant only to facilitate the description of the invention and to simplify the description, and are not meant to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.

As shown in fig. 1 to 6, a parking apparatus according to an embodiment of the present invention is used for a doctor console including a base plate 200 and casters 100 provided on the base plate 200, and includes:

the pedal mechanism comprises a pedal 1, a support 2, a swing rod 3 and a spring 4, wherein the support 2 is used for being installed on a base plate 200, the pedal 1 is movably connected to the support 2, one end of the spring 4 is connected to the pedal 1, the other end of the spring is connected to the support 2, a sliding groove 11 and a protruding block 12 are arranged on the pedal 1, one end of the swing rod 3 is hinged to the support 2, a sliding rod 31 is arranged at the other end of the swing rod 3, the sliding rod 31 is used for sliding along the sliding groove 11, the protruding block 12 is used for supporting the sliding rod 31, when a depression force is applied to the pedal 1 and the pedal 1 moves to the maximum stroke, the sliding rod 31 is used for moving to the position, away from the base plate 200, of the sliding groove 11, after the pressure is released to the pedal 1, the sliding rod 31 is used for guiding the sliding rod 31 to move to the protruding block 12, and when the position, away from the base plate 200, of the sliding rod 31 moves to the protruding block 12, the movement stroke of the pedal 1 is a first distance;

the transmission mechanism comprises a driving shaft 51, a driven shaft 52, a rack and pinion mechanism 6, a first bearing seat 53 and a second bearing seat 54, wherein the first bearing seat 53 and the second bearing seat 54 are installed on the bottom plate 200 at intervals, the driving shaft 51 is rotatably connected to the first bearing seat 53, the pedal 1 is connected with the driving shaft 51 through the rack and pinion mechanism 6, the driven shaft 52 is rotatably connected to the second bearing seat 54, one end of the driven shaft 52 is used for being connected with the caster 100, the driven shaft 52 rotates to change the working state of the caster 100, a first tooth structure 511 is arranged at the end part, close to the driven shaft 52, of the driving shaft 51, a second tooth structure 521 is arranged at the end part, close to the driving shaft 51, of the driven shaft 52, the first tooth structure 511 is used for being in clearance fit connection with the second tooth structure 521, and the clearance between teeth of the first tooth structure 511 and the second tooth structure 521 is used for compensating for the first distance.

In the present embodiment, the locking and unlocking of the caster 100 are realized by repeatedly stepping on the pedal 1, so as to effectively prevent the possibility of misoperation, specifically, when an operator steps on the pedal 1, the pedal 1 can move towards the direction close to the bottom plate 200 (the Z-axis direction in fig. 1) relative to the bracket 2, and the spring 4 is in a compressed energy storage state, when the operator releases the pedal 1, the pedal 1 automatically resets under the action of the spring 4, in the movement process of the pedal 1, the driving shaft 51 can be driven to rotate by the rack-and-pinion mechanism 6, and then the driven shaft 52 is driven to rotate by the first tooth structure 511 on the driving shaft 51 and the second tooth structure 521 on the driven shaft 52, the caster 100 can be driven to switch different working states (locking or walking) by the rotation of the driven shaft 52, when the caster 100 is in a walking state, the sliding rod 31 arranged on the swing rod 3 is located at a position close to the bottom plate 200 of the sliding chute 11, and at this time, the spring 4 is in an uncompressed state; when the caster 100 needs to be switched to the locked state, an operator may apply a downward force to the pedal 1 to move the pedal 1 toward the direction close to the bottom plate 200 (the direction of the Z axis in fig. 1), and move the pedal 1 to the maximum stroke (i.e., the pedal 1 will not move further toward the direction close to the bottom plate 200 when pressure is continuously applied), at this time, the sliding rod 31 moves from the position where the sliding chute 11 is close to the bottom plate 200 to the position where the sliding chute 11 is away from the bottom plate 200, in this process, the pedal 1 will drive the driving shaft 51 to rotate through the rack-and-pinion mechanism 6, the driving shaft 51 drives the driven shaft 52 to rotate through the first tooth structure 511 and the second tooth structure 521, so that the driven shaft 52 switches the caster 100 to the locked state, when the operator releases the pedal 1, the pedal 1 will be driven to rebound under the elastic force of the spring 4 (the pedal 1 moves toward the direction away from the bottom plate 200, i.e., the direction of the Z axis in fig. 1), at this time, the sliding chute 11 will guide the sliding rod 31 to fall onto the bump 12, the sliding rod 31 plays a role of supporting the sliding rod 31, so that the rebound after the pedal 1 is temporarily rebounded, the pedal 1 will not be rebounded, the distance between the teeth will not be left from the position where the pedal 11 is far away from the sliding shaft 11 to the sliding rod 12, when the first tooth structure 11 moves to the sliding shaft 51, and the first tooth structure 511 will compensate for the distance of the first tooth structure 52, so that the first tooth structure 521, the distance of the driving shaft 51, the first tooth structure 52, the distance of the driving shaft 51, and the driving shaft 51 during the distance of the driving shaft 51, the first tooth structure 521, and the distance of the driving shaft 51 will not be compensated for the first tooth structure, when the distance of the driving shaft 51; when the caster 100 needs to be switched to a walking state, an operator can apply a downward force to the pedal 1 to move the pedal 1 toward a direction close to the base plate 200 (the movement distance is a first distance), in the process, the slide rod 31 will leave the bump 12 and move to a position where the slide groove 11 is away from the base plate 200 under the guidance of the slide groove 11, when the operator releases the pedal 1, the pedal 1 is driven to rebound under the action of the elastic force of the spring 4, at the moment, the slide rod 31 moves from the position where the slide groove 11 is away from the base plate 200 to a position where the slide groove 11 is close to the base plate 200, in the process, the pedal 1 drives the driving shaft 51 to rotate temporarily through the rack-and-pinion mechanism 6, so that the first tooth structure 511 contacts the second tooth structure 521, and after the pedal 1 is released, the driving shaft 51 drives the driven shaft 52 to rotate under the action of the spring 4, thereby switching the caster 100 to the walking state. Compared with the prior art, the parking device of the invention can ensure that the locking and unlocking of the caster 100 can be stepped in one direction through one pedal 1 so as to realize the locking and unlocking circular operation of the caster 100, and an operator can have obvious paragraph feeling and obvious feedback in the process of stepping on the pedal 1, and the operator can know the working state of the caster 100 through the foot feeling and the position state of the pedal 1, thereby avoiding misoperation.

In the above working process, referring to fig. 5, which is a schematic diagram of a transmission process of the first tooth structure 511 and the second tooth structure 521 during a locking operation of the caster 100, the first tooth structure 511 and the second tooth structure 521 may be an expanding coupling sleeve structure with a tooth structure, or a tooth structure is provided at an end of the driving shaft 51 opposite to the driven shaft 52, and the driving shaft 51 and the driven shaft 52 are inserted into each other, so as to ensure that a gap between the first tooth structure 511 and the second tooth structure 521 can compensate for a first distance, and when the pedal 1 is in a state without external force, the gap between the first tooth structure 511 and the second tooth structure 521 is always on a counterclockwise rotation side of the driving shaft 51, which is a necessary gap designed to overcome a rebound stroke (i.e., the first distance) of the pedal 1, a1 in fig. 5 is an initial state, b1 is a torque transmission state, and c1 is a state after the pedal 1 is released; referring to fig. 6, which is a schematic diagram illustrating a transmission process of the first tooth structure 511 and the second tooth structure 521 during an unlocking operation of the caster 100, a2 is an initial state, b2 is a state in which the pedal 1 is stepped on to the lowest position (the direction of the Z axis in fig. 1 or fig. 2), and c1 is a state after the pedal 1 is released.

Optionally, the sliding slot 11 and the protrusion 12 are both in a heart-shaped structure, and a tip of the heart-shaped structure is configured to be disposed toward the bottom plate 200, and the protrusion 12 is located at a central position of the sliding slot 11.

In the present embodiment, referring to fig. 4, the slide 11 and the protrusion 12 are both in a heart-shaped configuration, and the tip of the heart-shaped configuration of the slide 11 and the protrusion 12 is disposed downward (opposite direction to the Z axis of fig. 1 or fig. 2), the slide 11 includes an unlocking position 111, a rebounding position 112, and a locking position 113, the rebounding position 112 includes a first rebounding position 1121 and a second rebounding position 1122, when the slide is located at the unlocking position 111, the caster 100 is in a walking state, when it is required to switch the caster 100 to the locking state, an operator applies a downward force to the pedal 1 and moves to a maximum stroke, the slide 31 moves from the unlocking position 111 to the first rebounding position 1121, when the operator releases the pressure on the pedal 1, the slide 31 moves from the first rebounding position 1121 to the locking position 113, and the protrusion 12 is configured to support the slide 31 at the locking position 113, and when the slide 31 moves from the rebounding position 112 to the locking position 113, the stroke of the pedal 1 is a first distance; when the caster 100 needs to be switched to the walking state, the pedal 1 is stepped on, and then the foot rapidly leaves the pedal 1 without stopping on the pedal 1, so that the elastic force of the spring 4 is offset, and abnormal unlocking is possible, in the unlocking process, the sliding rod 31 firstly moves from the locking position 113 to the second rebounding position 1122, and then the sliding rod 31 moves from the second rebounding position 1122 to the unlocking position 111, so that a work cycle is completed.

Optionally, a ramp structure 13 is provided in the slide 11, the ramp structure 13 being used to guide the movement of the slide rod 31 onto the projection 12.

In the present embodiment, referring to fig. 4, a slope structure 13 is disposed above the inside of the sliding chute 11, wherein a lower end of the slope structure 13 is disposed toward the first bouncing position 1121, and a higher end is disposed toward the second bouncing position 112, and the slope structure 13 is used for guiding the sliding rod 31 to move from the first bouncing position 1121 to the locking position 113 during the movement of the sliding rod 31 in the sliding chute 11, and is also used for guiding the sliding rod 31 to move from the locking position 113 to the second bouncing position 1122.

Optionally, the bracket 2 comprises a connecting plate 21 and a vertical frame 22, the connecting plate 21 is used for mounting on the base plate 200, and the vertical frame 22 is used for connecting to the end surface of the connecting plate 21 facing away from the base plate 200.

In this embodiment, as shown in fig. 1, the connecting plate 21 may be connected to the base plate 200 by bolts, the vertical frame 22 and the connecting plate 21 may be connected by bolts, welded or integrally formed, and the pedal 1 is configured to move up and down (in the Z-axis direction in fig. 1) along the vertical frame 22.

Optionally, the footrest mechanism further comprises a guide rail 7, the pedal 1 being connected to the vertical frame 22 via the guide rail 7, the pedal 1 being adapted to move towards or away from the connection plate 21.

In the present embodiment, as shown in fig. 1, a guide rail 7 is installed between the step 1 and the vertical frame 22, and the step 1 can move up and down (in the Z-axis direction in fig. 1) along the vertical frame 22 through the guide rail 7.

Alternatively, the cross section of the step 1 is an inverted L-shape, and the step 1 includes a vertical portion and a bent portion for abutting against the vertical frame 22 when the step 1 is applied with a depressing force toward a direction close to the connection plate 21 and moved to a maximum stroke.

In this embodiment, referring to fig. 1, the pedal 1 has an inverted L-shaped structure, wherein the bent portion is located at the upper end of the vertical portion (the positive direction of the Z axis in fig. 1), the operator can step on the bent portion of the pedal 1 and make the bent portion abut against the upper end of the vertical frame 22, and when the bent portion of the pedal 1 contacts with the upper end of the vertical frame 22, the pedal 1 moves to the maximum stroke.

Optionally, the pedal mechanism further comprises a square block and a round bar, the round bar is connected to the connecting plate 21, the square block is connected to the pedal 1, the square block is provided with a hole structure matched with the round bar in shape, the hole structure and the round bar are coaxially arranged, and the round bar is sleeved with the spring 4.

In this embodiment, as shown in fig. 1, the round bar can be connected to the connecting plate 21 by welding, the square block can be connected to the pedal 1 by bolts, during the downward movement (in the opposite direction of the Z axis in fig. 1) of the pedal 1, the round bar will be inserted into the hole structure of the square block, and the square block will compress the spring 4, and the round bar can make the spring 4 compress and force uniformly.

Alternatively, the rack and pinion mechanism 6 comprises a gear 61 and a rack 62, the gear 61 is connected to the drive shaft 51, the rack 62 is connected to the pedal 1, and the gear 61 is in transmission connection with the rack 62.

In the present embodiment, referring to fig. 1, to further illustrate the above-mentioned "first distance", when the operator steps on the pedal 1, the rack 62 is displaced downward by 25mm (this value is for illustration, so as to explain the "first distance" more intuitively), and when the pedal 1 is released, the rack 62 rebounds by 5mm (the first distance), and the rack 62 actually displaces by 20mm, and at this time, the gear 61 correspondingly rotates by 56.25 degrees, then rebounds by 11.25 degrees, and the driven shaft 52 actually rotates by 45 degrees. It will be appreciated that the backlash between the first and second tooth structures 511, 521 is to compensate for the above-mentioned 5mm.

Optionally, the transmission mechanism further includes a torsion spring 8, the driving shaft 51 is sleeved with the torsion spring 8, one end of the torsion spring 8 is connected to the gear 61, and the other end of the torsion spring is used for being connected to the bottom plate 200.

In this embodiment, as shown in fig. 1, one end of the torsion spring 8 can be bolted to the gear 61, and the other end can be bolted to the bottom plate 200, the torsion spring 8 can provide unlocking force during rebound, and the initial force can be adjusted by pre-tightening during actual installation.

In addition, the doctor console of another embodiment of the invention comprises the parking device.

Since the technical improvement of the doctor's console and the technical effect obtained are the same as those of the parking device, the technical effect of the doctor's console will not be described in detail.

The terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" and "second" may explicitly or implicitly include at least one of the feature.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by those skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications are intended to fall within the scope of the invention.

Claims (10)

1. A parking device for a doctor's console comprising a base plate (200) and casters (100) provided on the base plate (200), characterized in that it comprises:

the pedal mechanism comprises a pedal (1), a bracket (2), a swing rod (3) and a spring (4), the bracket (2) is used for being arranged on the bottom plate (200), the pedal (1) is movably connected with the bracket (2), one end of the spring (4) is connected with the pedal (1), and the other end is connected with the bracket (2), a sliding groove (11) and a convex block (12) are arranged on the pedal (1), one end of the swing rod (3) is hinged with the bracket (2), a sliding rod (31) is arranged at the other end of the swing rod (3), the sliding rod (31) is used for sliding along the sliding groove (11), the convex block (12) is used for supporting the sliding rod (31), when the pedal (1) is applied with depression force and moves to the maximum stroke, the sliding rod (31) is used for moving to the position of the chute (11) far away from the bottom plate (200), when the pressure on the pedal (1) is released, the sliding groove (11) is used for guiding the sliding rod (31) to move onto the lug boss (12), when the sliding rod (31) moves from the position of the sliding groove (11) in the direction away from the bottom plate (200) to the bump (12), the movement stroke of the pedal (1) is a first distance;

the transmission mechanism comprises a driving shaft (51), a driven shaft (52), a rack and pinion mechanism (6), a first bearing seat (53) and a second bearing seat (54), wherein the first bearing seat (53) and the second bearing seat (54) are installed on the bottom plate (200) at intervals, the driving shaft (51) is rotatably connected to the first bearing seat (53), the pedal (1) is connected with the driving shaft (51) through the rack and pinion mechanism (6), the driven shaft (52) is rotatably connected to the second bearing seat (54), one end of the driven shaft (52) is used for being connected with the caster (100), the driven shaft (52) is rotated to change the working state of the caster (100), a first tooth structure (511) is arranged at the end part, close to the driven shaft (52), of the driven shaft (52) is provided with a second tooth structure (521), the first tooth structure (511) is used for being in clearance fit connection with the second tooth structure (521), and the first tooth structure (511) and the second tooth structure (521) are used for compensating the first distance between teeth.

2. Parking device according to claim 1, wherein the sliding groove (11) and the cam (12) are each of heart-shaped configuration, and the tip of the heart-shaped configuration is arranged to face towards the bottom plate (200), and the cam (12) is located at the center of the sliding groove (11).

3. Parking device according to claim 1, wherein a ramp structure (13) is provided in the slide groove (11), said ramp structure (13) being adapted to guide the movement of the slide rod (31) onto the cam (12).

4. Parking device according to claim 1, wherein the bracket (2) comprises a connection plate (21) and a vertical frame (22), the connection plate (21) being intended to be mounted on the base plate (200), the vertical frame (22) being intended to be connected to an end face of the connection plate (21) facing away from the base plate (200).

5. Parking device according to claim 4, wherein the pedal mechanism further comprises a guide rail (7), the pedal (1) being connected to the vertical frame (22) via the guide rail (7), the pedal (1) being adapted to move towards or away from the connection plate (21).

6. Parking device according to claim 4, wherein the cross-section of the step (1) is inverted L-shaped, and the step (1) comprises a vertical portion and a bent portion for abutting against the vertical frame (22) when the step (1) is depressed towards the connection plate (21) and moved to a maximum stroke.

7. The parking device according to claim 4, wherein the pedal mechanism further comprises a square block and a round rod, the round rod is connected to the connecting plate (21), the square block is connected to the pedal (1), the square block is provided with a hole structure matched with the round rod in shape, the hole structure and the round rod are coaxially arranged, and the spring (4) is sleeved on the round rod.

8. Parking device according to claim 1, wherein said rack and pinion mechanism (6) comprises a gear wheel (61) and a rack (62), said gear wheel (61) being connected to said driving shaft (51), said rack (62) being connected to said pedal (1), said gear wheel (61) being in driving connection with said rack (62).

9. The parking device according to claim 8, wherein the transmission mechanism further comprises a torsion spring (8), the driving shaft (51) is sleeved with the torsion spring (8), one end of the torsion spring (8) is connected to the gear (61), and the other end of the torsion spring is used for being connected with the bottom plate (200).

10. A doctor's console, comprising a parking device according to any one of claims 1 to 9.

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