Wheel central control brake device for medical equipment

Abstract

The utility model discloses a wheel center control brake device for medical equipment, which comprises a support frame, a wheel is rotatably arranged at the bottom end of the support frame, a first through hole is arranged at the top of the support frame, a second through hole coaxial with the first through hole is arranged on a fixing plate, and the second through hole comprises a connecting rod, a directional groove, a directional block, a hexagonal wheel disc and a locking mechanism. A locking mechanism and a reset spring are arranged between the fixing plate and the connecting rod, and the locking mechanism is used for locking the connecting rod to prevent the connecting rod from freely rotating when the convex cap is connected with the arc-shaped convex surface. According to the universal caster with the middle neutral gear, a caster support and a wheel can rotate freely, and the universal caster with the middle neutral gear is compact in central control structure, simple to assemble, easy to install and low in production cost.

Description

Technical Field

[0001] The utility model relates to the field of casters, in particular to a wheel central control brake device for medical equipment. Background Art

[0002] At present, with the development of society, especially in the medical industry, casters commonly used in medical beds, carts, etc. are becoming more and more widely used due to their easy operation and reliable structure. However, with the development of science and technology, casters, as secondary accessories of large nursing facilities such as beds and carts, are required to be delicate, simple and reliable. This requires us to streamline the configuration of the internal structure of the casters and achieve the original product functions with fewer accessories, or even one or two spare parts.

[0003] For example, the Chinese patent: application number is 2012202388910, and the patent name is a central control caster, "which includes a caster body, a linkage group, a latch group, a left roller, a right roller, an axle and an axle sleeve, the axle sleeve is an axle hole passing through the caster body, so that the axle passes through the right roller and the axle sleeve and then combines with the left roller, and then covers the outer side of the right roller with an outer cover, so that the linkage group passes through the bearing and the caster body and then combines with the latch group, wherein: the linkage group includes a connecting rod, a connecting rod sleeve, a left bushing, a right bushing, a receiving plate, a rotating body, a first elastic element and a control rod, wherein the lower end of the connecting rod is penetrated by the first elastic element and the connecting rod sleeve, so that the first elastic element is located inside the connecting rod sleeve, and the receiving plate is inserted into the top groove of the connecting rod and the top groove of the connecting rod sleeve, and the receiving plate is inserted into the top groove of the connecting rod and the top groove of the connecting rod sleeve. A rotating body is arranged on the top so that the flange at the lower end of the rotating body corresponds to the arc concave between the high inclined surface and the low inclined surface at the top of the receiving piece, and left and right bushings are covered on the outside of the connecting rod and the connecting rod sleeve so that the resistance edges on the inner surfaces of the left and right bushings are located between the first and second lugs of the rotating body. After the left and right bushings are covered, the through holes provided in the left and right bushings are aligned with the hexagonal through holes of the rotating body, and a control rod is passed through. Then, the control rod can drive the rotating body to rotate, so that the connecting rod and the connecting rod sleeve of the linkage group pass through the bearing and the caster body and then combine with the latch group; the latch group includes a second elastic element, a locking piece, a toothed disc, a T-shaped bushing, a third elastic element, a locking piece, a gasket screw, an upper positioning piece and a lower positioning piece, wherein the second elastic element is placed in the circular groove edge of the locking piece upward frame body, and the third The elastic element is sleeved on the lower section of the T-shaped bushing so that the third elastic element is located between the T-shaped bushing and the locking piece, and the connecting rod and the connecting rod sleeve of the linkage group that pass through the caster body pass through the toothed disc so that the connecting rod sleeve and the toothed disc are engaged, and then the connecting rod that passes through the connecting rod sleeve passes through the cylinder, T-shaped bushing and locking piece of the locking piece of the locking piece of the locking piece of the locking piece in sequence, and then the washer screw is locked in the screw groove of the square section of the connecting rod, and below the washer screw, the upper positioning piece and the lower positioning piece are locked on the bottom surface of the caster body, so that the square hole on one side of the upper positioning piece is aligned with the locking piece, and the round hole on the other side of the upper positioning piece, the round hole of the lower positioning piece and the round groove edge of the locking piece are relatively aligned; the axis sleeve passes through the axis sleeve hole of the caster body and the locking piece of the locking piece of the locking piece of the upward frame body and is combined with the axis and the roller, so that the locking piece of the locking piece of the locking piece of the upward frame body The two sides are separated on the two sides of the caster body, and the other end of the second elastic element placed in the upward frame body is against the bottom of the caster body, then the horizontal teeth on both sides of the locking piece's upward frame body will correspond to the slots of the left and right rollers, and the slots of the locking piece cylinder will correspond to the serrations of the toothed disc. "In the above technology, the control system has a complex structure, high cost, and many parts; although the central control caster can realize the above three functions at the same time, the double-wheel central control caster has a complex structure, high manufacturing cost, and uses a slider and an embedded groove to achieve braking, resulting in a low braking strength of the double-wheel central control caster, which affects the service life and even seriously affects the safety performance of the double-wheel central control caster. Based on the above reasons, a new central control caster control system is needed;Under the premise of meeting the requirements of quick switching between the three states of straight-line, universal and brake-oriented, the structure is compact and the assembly is simple. ; Utility Model Content

[0004] The purpose of the utility model is to provide a wheel central control brake device for medical equipment.

[0005] In order to achieve the above purpose, the utility model adopts the following scheme:

[0006] A wheel central control brake device for medical equipment comprises a support frame, a wheel is rotatably provided at the bottom end of the support frame, a first through hole is provided at the top of the support frame, a bearing is rotatably provided on the first through hole, a shaft cylinder coaxial with the bearing is provided above the bearing, a fixing plate is provided on the support frame below the first through hole, a second through hole coaxial with the first through hole is provided on the fixing plate, and the characteristics are:

[0007] A connecting rod is provided on the bearing, the bottom end of the connecting rod passes through the first through hole and the second through hole in sequence, one end of the connecting rod extends into the shaft cylinder, a brake block is provided at the bottom of the connecting rod, and a convex cap is provided at the top of the connecting rod;

[0008] An orientation groove, wherein an orientation groove coaxial with the second through hole is provided at the bottom of the fixing plate;

[0009] A directional block is provided on the top of the brake block and can be inserted into the directional groove to lock the moving direction of the moving wheel;

[0010] Hexagonal wheel disc; a third through hole is horizontally penetrated on the outer wall of the shaft cylinder, a sleeve is arranged in the shaft cylinder, a hexagonal wheel disc coaxial with the third through hole is rotatably arranged on the sleeve, a first arc-shaped recessed portion, a second arc-shaped recessed portion and an arc-shaped convex surface which can be connected with a convex cap are arranged in sequence on the outer wall of the hexagonal wheel disc, the convex cap is connected with the first arc-shaped recessed portion so that the orientation block can be inserted into the orientation groove, the convex cap is connected with the arc-shaped convex surface so that the brake block can lock the wheel, and the convex cap is connected with the second arc-shaped recessed portion so that the orientation groove and the orientation block can be kept separated, and the brake block and the wheel can also be kept separated;

[0011] A locking mechanism is provided between the fixing plate and the connecting rod, which locks the connecting rod so that it cannot rotate freely when a convex cap is connected to the arc-shaped convex surface;

[0012] A reset spring is arranged in the sleeve to keep the convex cap pressed against the hexagonal wheel disc. The central control caster of the utility model realizes the above three functions at the same time. The first is the direction locking gear: the universal caster is transformed into a directional caster that can only move forward and backward; the second is the direction and wheel locking gear: the universal caster is transformed into a fully locked full-brake caster; the third is the middle neutral universal caster: the caster bracket and the wheel can rotate freely, and the wheel central control structure is compact, simple to assemble, easy to install, and the production cost is low.

[0013] As a further solution of the utility model, the connecting rod includes a hexagonal rod passed through the bearing, a threaded rod is fixedly provided on the top of the hexagonal rod, a first threaded hole is provided at the bottom of the hexagonal rod, a bolt is threadedly connected to the first threaded hole, the bolt is in turn a brake block, a directional block and a locking mechanism, and the convex cap is threadedly connected to the top of the threaded rod.

[0014] As a further solution of the utility model, the convex cap includes a hexagonal nut threadedly connected to the top of the threaded rod, and a protrusion that can be respectively connected to the first arc-shaped recessed portion, the second arc-shaped recessed portion and the arc-shaped convex surface is provided on the top of the hexagonal nut, and a hexagonal hole that can cooperate with the hexagonal nut is provided on the inner wall of the sleeve.

[0015] As a further solution of the utility model, the fixing plate is fixed below the second through hole by screws, and a gap plate is provided between the fixing plate and the second through hole.

[0016] As a further solution of the utility model, the directional groove includes a first countersunk hole arranged below the second through hole and coaxial therewith, a first notch is provided in the front-to-back direction of the outer wall of the first countersunk hole, and a second notch is provided on the left and right sides of the outer wall of the first countersunk hole, and the number of the second notches on each side is two respectively.

[0017] As a further solution of the utility model, the directional block includes an insert plate with the same shape as the directional groove, a first boss is fixed on the top of the insert plate, a first slot is provided on the top of the first boss, a first insert block is provided at the bottom of the insert plate, a fourth through hole is provided on the axis of the first boss, which can sequentially penetrate the first boss, the insert plate and the first insert block, the fourth through hole is sleeved on the bolt, and a second slot that can cooperate with the first insert block is provided on the top of the brake block.

[0018] As a further solution of the utility model, the locking mechanism includes first teeth arranged in sequence along the circumference above the first through hole, a circular plate is provided above the first through hole, a second plug block is provided at the bottom of the circular plate, a second countersunk hole sleeved on the bottom of the hexagonal rod is provided at the top of the circular plate, a fifth through hole penetrating the circular plate and the second plug block is provided in the second countersunk hole and sleeved on the bolt, the second plug block is inserted into the second slot, and a plurality of second teeth meshing with the first teeth are provided in sequence at the bottom of the circular plate.

[0019] As a further solution of the utility model, a protective cover is provided between the bearing and the shaft cylinder.

[0020] To sum up, the utility model has the following beneficial effects compared with the prior art: the central control caster of the utility model realizes the above three functions at the same time, the first one is the direction locking gear: the universal caster is transformed into a directional caster that can only move forward and backward, the second one is the direction and wheel locking gear: the universal caster is transformed into a fully locked full-brake caster, and the third one is the middle neutral universal caster: the caster bracket and the wheel can rotate freely, and the wheel central control structure is compact, simple to assemble, easy to install, and the production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional view of the utility model.

[0022] Figure 2 This is one of the exploded views of the utility model.

[0023] Figure 3 This is the second exploded view of the utility model.

[0024] Figure 4 It is a cross-sectional view of the utility model.

[0025] Figure 5 For this utility model Figure 2 Magnified view at A in the middle.

[0026] Figure 6 For this utility model Figure 3 Magnified view at B.

[0027] Figure 7 For this utility model Figure 4 Magnified view at center C.

[0028] Figure 8 It is an assembly view of the connecting rod in the utility model.

[0029] Description of reference numerals: 1, support frame; 2, wheel; 3, first through hole; 4, bearing; 5, shaft cylinder; 6, fixing plate; 7, second through hole; 20, connecting rod; 8, convex cap; 40, orientation groove; 50, orientation block; 9, hexagonal wheel; 10, third through hole; 11, sleeve; 12, first arc-shaped recess; 13, second arc-shaped recess; 14, arc-shaped convex surface; 60, locking mechanism; 15, reset spring; 21, hexagonal rod; 22, threaded rod; 23, first threaded hole; 2 4. Bolt; 81. Hexagonal nut; 82. Boss; 83. Hexagonal hole; 611. Clearance plate; 41. First countersunk hole; 42. First notch; 43. Second notch; 51. Insert plate; 52. First boss; 53. First slot; 54. First insert block; 55. Fourth through hole; 56. Second slot; 61. First tooth; 62. Round plate; 63. Second insert block; 64. Second countersunk hole; 65. Second tooth; 66. Fifth through hole; 101. Shield; 16. Brake block. DETAILED DESCRIPTION

[0030] The following specific implementation content provides a variety of different embodiments or examples for implementing the utility model. Of course, these are only embodiments or examples and are not intended to be limiting. In addition, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the utility model and do not represent a specific relationship between the different embodiments and / or structures discussed.

[0031] In addition, space-related words may be used, such as "below", "lower side", "from the inside out", "above", "upper side" and similar words. These relative words are for the convenience of describing the relationship between one element or feature and another element or feature in the drawings. These spatial relative words include different orientations of the device in use or operation, as well as the orientations described in the drawings. The device may be turned to different orientations, rotations or other orientations, and the space-related adjectives used therein may also be interpreted in the same way. Therefore, it cannot be understood as a limitation on the utility model. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.

[0032] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods: Figures 1 to 8A wheel central control brake device for medical equipment shown in the figure comprises a support frame 1, a wheel 2 is rotatably provided at the bottom end of the support frame 1, a first through hole 3 is provided at the top of the support frame 1, a bearing 4 is rotatably provided on the first through hole 3, a shaft cylinder 5 coaxial with the bearing 4 is provided above the bearing 4, a fixing plate 6 is provided below the first through hole 3 on the support frame 1, and a second through hole 7 coaxial with the first through hole 3 is provided on the fixing plate 6, characterized in that:

[0033] A connecting rod 20 is provided on the bearing 4, the bottom end of the connecting rod 20 passes through the first through hole 3 and the second through hole 7 in sequence, one end of the connecting rod 20 extends into the shaft cylinder 5, a brake block 16 is provided at the bottom of the connecting rod 20, and a convex cap 8 is provided at the top of the connecting rod 20;

[0034] An orientation groove 40 is provided at the bottom of the fixing plate 6 and is coaxial with the second through hole 7;

[0035] An orientation block 50 is provided on the top of the brake block 16 and can be inserted into the orientation slot 40 to lock the moving direction of the moving wheel 2;

[0036] A hexagonal wheel disc 9; a third through hole 10 is horizontally penetrated on the outer wall of the shaft cylinder 5, a sleeve 11 is provided in the shaft cylinder 5, a hexagonal wheel disc 9 coaxial with the third through hole 10 is rotatably provided on the sleeve 11, a first arc-shaped recessed portion 12, a second arc-shaped recessed portion 13 and an arc-shaped convex surface 14 which can be connected to the convex cap 8 are provided on the outer wall of the hexagonal wheel disc 9 in sequence, the convex cap 8 is connected to the first arc-shaped recessed portion 12 so that the orientation block 50 can be inserted into the orientation groove 40, the convex cap 8 is connected to the arc-shaped convex surface 14 so that the brake block 16 can lock the wheel 2, the convex cap 8 is connected to the second arc-shaped recessed portion 13 so that the orientation groove 40 and the orientation block 50 are kept separated, and the brake block 16 and the wheel 2 are also kept separated;

[0037] A locking mechanism 60 is provided between the fixing plate 6 and the connecting rod 20, and when the convex cap 8 is connected to the arc-shaped convex surface 14, the connecting rod 20 is locked so that it cannot rotate freely;

[0038] A return spring 15 is arranged in the sleeve 11 to keep the convex cap 8 pressed against the hexagonal wheel 9.

[0039] A further embodiment of the connecting rod 20 in the utility model: the connecting rod 20 includes a hexagonal rod 21 inserted on the bearing 4, a threaded rod 22 is fixedly provided on the top of the hexagonal rod 21, a first threaded hole 23 is provided at the bottom of the hexagonal rod 21, a bolt 24 is threadedly connected to the first threaded hole 23, the bolt 24 is in turn connected to the brake block 16, the directional block 50 and the locking mechanism 60, and the convex cap 8 is threadedly connected to the top of the threaded rod 22.

[0040] A further embodiment of the convex cap 8 in the utility model: the convex cap 8 includes a hexagonal nut 81 threadedly connected to the top of the threaded rod 22, and a protrusion 82 is provided on the top of the hexagonal nut 81, which can be respectively connected to the first arc-shaped recessed portion 12, the second arc-shaped recessed portion 13 and the arc-shaped convex surface 14, and a hexagonal hole 83 that can cooperate with the hexagonal nut 81 is provided on the inner wall of the sleeve 11.

[0041] A further embodiment of the fixing plate 6 in the present invention is as follows: the fixing plate 6 is fixed below the second through hole 7 by screws, and a gap plate 611 is provided between the fixing plate 6 and the second through hole 7 .

[0042] A further embodiment of the orientation groove 40 in the utility model: the orientation groove 40 includes a first countersunk hole 41 arranged below the second through hole 7 and coaxial therewith, a first notch 42 is provided in the front-to-back direction of the outer wall of the first countersunk hole 41, and a second notch 43 is provided on the left and right sides of the outer wall of the first countersunk hole 41, and the number of the second notches 43 arranged on each side is two respectively.

[0043] A further embodiment of the directional block 50 in the utility model: the directional block 50 includes a plug plate 51 with the same shape as the directional groove 40, a first boss 52 is fixed on the top of the plug plate 51, a first slot 53 is provided on the top of the first boss 52, a first plug block 54 is provided at the bottom of the plug plate 51, a fourth through hole 55 is provided on the axis of the first boss 52, which can sequentially penetrate the first boss 52, the plug plate 51 and the first plug block 54, the fourth through hole 55 is sleeved on the bolt 24, and a second slot 56 that can cooperate with the first plug block 54 is provided on the top of the brake block 16.

[0044] A further embodiment of the locking mechanism 60 in the present invention: the locking mechanism 60 includes a first tooth 61 arranged in sequence along the circumference above the first through hole 3, a circular plate 62 is provided above the first through hole 3, a second plug block 63 is provided at the bottom of the circular plate 62, a second countersunk hole 64 is provided at the top of the circular plate 62 and sleeved on the bottom of the hexagonal rod 21, a fifth through hole 66 is provided in the second countersunk hole 64, which passes through the circular plate 62 and the second plug block 63 and is sleeved on the bolt 24, the second plug block 63 is inserted into the second slot 56, and a plurality of second teeth 65 meshing with the first tooth 61 are provided in sequence at the bottom of the circular plate 62.

[0045] A further embodiment of the bearing 4 and the shaft cylinder 5 in the utility model: a shield 101 is provided between the bearing 4 and the shaft cylinder 5 .

[0046] When in use: the wheel center control structure in the utility model is divided into three gears, the first gear: the convex block 82 is connected to the first arc-shaped recessed portion 12, at this time, under the action of the return spring 15, the connecting rod 20 will move upward, so that the directional block 50 on the brake block 16 is inserted into the directional groove 40, at this time, if the directional groove 40 and the directional block 50 are misaligned, the user can shake the wheel left and right, calibrate the position of the directional groove 40 and the directional block 50, so that the directional block 50 can be inserted into the directional groove 40, the first notch 42 will be wider than the second notch 43, and the number of the second notch 43 will be one more than the first notch 42, so the wheel 2 and the support frame 1 remain parallel, and the directional block 50 can be inserted into the directional groove 40;

[0047] The second gear: the convex block 82 is connected to the arc convex surface 14. At this time, the connecting rod 20 will move downward, so that the brake block 16 locks the wheel 2, and the first tooth 61 and the second tooth 65 will also mesh, so that the connecting rod 20 cannot rotate freely along the support frame 1, and the universal caster is transformed into a fully locked full-brake caster;

[0048] The third gear is when the protrusion 82 is connected to the second arc-shaped recess 13. At this time, the orientation groove 40 and the orientation block 50 remain separated, and the brake block 16 and the wheel 2 also remain separated, so that the wheel can rotate freely along the axis of the connecting rod 20.

[0049] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A wheel central control brake device for medical equipment, comprising a support frame (1), a wheel (2) rotatably provided at the bottom end of the support frame (1), a first through hole (3) provided at the top of the support frame (1), a bearing (4) rotatably provided on the first through hole (3), a shaft cylinder (5) coaxial with the bearing (4) provided above the bearing (4), a fixing plate (6) provided on the support frame (1) below the first through hole (3), a second through hole (7) coaxial with the first through hole (3) provided on the fixing plate (6), characterized in that: A connecting rod (20), wherein the connecting rod (20) is passed through the bearing (4), the bottom end of the connecting rod (20) passes through the first through hole (3) and the second through hole (7) in sequence, one end of the connecting rod (20) extends into the shaft tube (5), a brake block (16) is provided at the bottom of the connecting rod (20), and a convex cap (8) is provided at the top of the connecting rod (20); An orientation groove (40), wherein an orientation groove (40) coaxial with the second through hole (7) is provided at the bottom of the fixing plate (6); An orientation block (50) is provided on the top of the brake block (16) and can be inserted into the orientation groove (40) to lock the moving direction of the moving wheel (2); A hexagonal wheel disc (9); a third through hole (10) is transversely penetrated on the outer wall of the shaft cylinder (5); a sleeve (11) is arranged inside the shaft cylinder (5); a hexagonal wheel disc (9) coaxial with the third through hole (10) is rotatably arranged on the sleeve (11); a first arc-shaped recessed portion (12), a second arc-shaped recessed portion (13) and an arc-shaped convex surface (14) which can be connected to a convex cap (8) are arranged in sequence on the outer wall of the hexagonal wheel disc (9); the convex cap (8) is connected to the first arc-shaped recessed portion (12) so that the orientation block (50) can be inserted into the orientation groove (40); the convex cap (8) is connected to the arc-shaped convex surface (14) so ​​that the brake block (16) can lock the wheel (2); the convex cap (8) is connected to the second arc-shaped recessed portion (13) so that the orientation groove (40) and the orientation block (50) are kept separated, and the brake block (16) and the wheel (2) are also kept separated; A locking mechanism (60) is provided between the fixing plate (6) and the connecting rod (20), wherein the convex cap (8) is connected to the arc-shaped convex surface (14), and the locking mechanism (60) locks the connecting rod (20) so that the connecting rod cannot rotate freely; A return spring (15) is arranged in the sleeve (11) and can keep the convex cap (8) pressed against the hexagonal wheel (9).

2. A wheel central control brake device for medical equipment according to claim 1, characterized in that: The connecting rod (20) comprises a hexagonal rod (21) inserted into a bearing (4), a threaded rod (22) fixedly provided at the top of the hexagonal rod (21), a first threaded hole (23) provided at the bottom of the hexagonal rod (21), a bolt (24) threadedly connected to the first threaded hole (23), the bolt (24) being connected in sequence to a brake block (16), a directional block (50) and a locking mechanism (60), and the convex cap (8) being threadedly connected to the top of the threaded rod (22).

3. A wheel central control brake device for medical equipment according to claim 2, characterized in that: The convex cap (8) comprises a hexagonal nut (81) threadedly connected to the top of the threaded rod (22); a convex block (82) which can be respectively connected to the first arc-shaped recessed portion (12), the second arc-shaped recessed portion (13) and the arc-shaped convex surface (14); and a hexagonal hole (83) which can cooperate with the hexagonal nut (81) is provided on the inner wall of the sleeve (11).

4. A wheel central control brake device for medical equipment according to claim 1, characterized in that: The fixing plate (6) is fixed below the second through hole (7) by means of screws, and a gap plate (611) is provided between the fixing plate (6) and the second through hole (7).

5. The wheel central control brake device for medical equipment according to claim 1, characterized in that: The orientation groove (40) comprises a first countersunk hole (41) arranged below the second through hole (7) and coaxial therewith, a first notch (42) is arranged in the front-rear direction of the outer wall of the first countersunk hole (41), and second notches (43) are arranged on the left and right sides of the outer wall of the first countersunk hole (41), and the number of the second notches (43) arranged on each side is two respectively.

6. A wheel central control brake device for medical equipment according to claim 2, characterized in that: The orientation block (50) includes an insert plate (51) having the same shape as the orientation groove (40), a first boss (52) is fixed on the top of the insert plate (51), a first slot (53) is provided on the top of the first boss (52), a first insert block (54) is provided at the bottom of the insert plate (51), a fourth through hole (55) is provided on the axis of the first boss (52) and can pass through the first boss (52), the insert plate (51) and the first insert block (54) in sequence, the fourth through hole (55) is sleeved on the bolt (24), and a second slot (56) that can cooperate with the first insert block (54) is provided on the top of the brake block (16).

7. A wheel central control brake device for medical equipment according to claim 6, characterized in that: The locking mechanism (60) comprises a first tooth (61) arranged in sequence along the circumference above the first through hole (3); a circular plate (62) is arranged above the first through hole (3); a second plug block (63) is arranged at the bottom of the circular plate (62); a second countersunk hole (64) sleeved on the bottom of the hexagonal rod (21) is arranged at the top of the circular plate (62); a fifth through hole (66) penetrating the circular plate (62) and the second plug block (63) is arranged in the second countersunk hole (64) and sleeved on the bolt (24); the second plug block (63) is inserted into the second slot (56); and a plurality of second teeth (65) meshing with the first tooth (61) are arranged in sequence at the bottom of the circular plate (62).

8. The wheel central control brake device for medical equipment according to claim 1, characterized in that: A protective cover (101) is provided between the bearing (4) and the shaft cylinder (5).

Images