A rear wheel brake steering device for a medical X-ray machine

Abstract

The utility model discloses a rear wheel brake steering gear for medical X ray machine, including rear wheel steering base, rear wheel steering base includes both side board and hollow cylinder structure's installation unit, both side board is connected rear wheel body through rear wheel fixed pin shaft, and the upper portion of side board is equipped with through -hole, and the lateral hole outside fixedly is equipped with swing arm fixed axle, and the swing arm fixed axle is connected brake block swing arm on the axle, and the inside of installation unit is equipped with brake lift rod, and brake lift rod bottom is connected with brake block swing arm axle, and brake block swing arm bottom is equipped with one inner groove, and the inner groove is equipped with brake block, brake lift rod top fixed connection bearing fixed column, and bearing fixed column top outer ring connects brake bearing, and brake bearing outer ring connects bearing mounting seat, and bearing mounting seat top connects bearing gland, and bearing gland is connected brake effect cover.

Description

Technical Field

[0001] This utility model relates to the field of medical equipment, and in particular to a rear wheel brake steering device for a medical X-ray machine. Background Technology

[0002] The C-arm design for medical X-ray machines is becoming increasingly mature. However, current C-arm rear wheel brake solutions on the market generally rely on ground friction braking or braking the front of the rear wheels. Ground braking effectiveness is greatly affected by the flatness of the ground, while braking the front of the rear wheels is greatly affected by the curvature of the wheel surface. Sometimes, dust on the wheel surface can significantly reduce braking force.

[0003] To meet clinical requirements, the rear wheel of the C-arm needs to achieve a 90-degree steering function. In the market, a chain-driven sprocket is used to drive the rear wheel to turn, and then the steering is confirmed to be 90 degrees by a limit switch. However, sometimes understeering or turning more than 90 degrees will cause difficulty in pushing. Utility Model Content

[0004] Purpose of the utility model: The technical problem to be solved by this utility model is to provide a rear wheel brake steering device for medical X-ray machines, which addresses the shortcomings of the existing technology.

[0005] To address the aforementioned technical problems, this utility model discloses a rear wheel brake steering device for a medical X-ray machine, comprising a rear wheel steering base. The rear wheel steering base includes two side plates and a hollow cylindrical mounting portion. The two side plates are connected to the rear wheel body via rear wheel fixing pins. A through hole is provided at the upper part of the side plate, and a rocker arm fixing shaft is fixedly mounted outside the through hole. A brake block rocker arm is connected to the upper shaft of the rocker arm fixing shaft. A brake lifting rod is provided inside the mounting portion, and the bottom of the brake lifting rod is connected to the brake block rocker arm shaft. An inner groove is provided at the bottom of the brake block rocker arm, and a brake block rocker arm is provided within the inner groove. The brake lift rod is fixedly connected to a bearing fixing column at its top. The outer ring of the top of the bearing fixing column is connected to a brake bearing. The outer ring of the brake bearing is connected to a bearing mounting seat. The top of the bearing mounting seat is connected to a bearing cover. A brake cover is connected to the bearing cover. The outer ring of the middle part of the rear wheel steering base is fixedly connected to a rear wheel steering sprocket. A steering bearing is provided on the outer wall of the rear wheel steering base above the rear wheel steering sprocket. The outer ring of the steering bearing is connected to a rear wheel fixing plate. A set of positioning beads is provided on the rear wheel fixing plate. A set of limiting grooves that are adapted to the positioning beads are provided on the rear wheel steering base.

[0006] In this invention, the outer ring of the brake lift rod is equipped with a return spring. The bottom of the return spring abuts against the brake lift rod, and the top of the return spring abuts against the top of the internal slot of the rear wheel steering base when the brake lift rod is lifted. After braking, the auxiliary brake lift rod rises as quickly as possible, allowing the rear wheel body to move faster.

[0007] In this utility model, the upper part of the brake lifting rod is provided with an installation groove, the bearing fixing post is inserted into the installation groove and threadedly fastened to the installation groove, and the top of the bearing fixing post presses against the brake bearing.

[0008] In this utility model, there are 4 positioning beads, which are evenly distributed in four directions. When the rear wheel fixing plate vibrates with the vehicle, the positioning beads play a shock absorption role, filter out the vibration, and avoid applying force to the rear wheel steering base, which would cause the rear wheel steering base to turn slightly and affect its straight travel. In addition, the positioning beads adjust the positioning force by controlling the engagement depth, which assists the C-arm device to make a precise 90-degree turn.

[0009] In this invention, the brake block is a rubber block, and the rear wheel body is braked by the brake block rocker arm.

[0010] In this invention, the swing amplitude of the brake block rocker arm is 10°.

[0011] Beneficial effects: 1. This device, by setting 4 positioning beads at a 90-degree angle to each other, can assist the C-arm machine to make a precise 90° turn.

[0012] This device filters out the influence of the rear wheel fixing plate and its connecting parts on the rear wheel by setting a steering bearing. When the rear wheel fixing plate vibrates, the rear wheel steering base can still maintain its original direction.

[0013] This device ensures that steering and braking do not affect each other by setting up a brake bearing. When the chain drives the rear wheel steering sprocket, the rear wheel steering base and the rear wheel body rotate accordingly, but the brake cover remains in its original state and does not rotate.

[0014] 4. This device brakes the rear wheel side, and the advantage of this solution is that the braking force is reliable and stable. Attached Figure Description

[0015] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0016] Figure 1 This is a schematic diagram of the overall structure;

[0017] Figure 2 It is a side view;

[0018] Figure 3 This is a cross-sectional view of the rear wheel brakes in operation;

[0019] Figure 4 This is a cross-sectional view of the rear wheels in the non-braking state.

[0020] The attached diagram shows the following components: 1. Rear wheel body; 2. Rear wheel fixing pin; 3. Rear wheel steering base; 4. Rear wheel steering sprocket; 5. Rear wheel fixing plate; 6. Steering bearing; 7. Positioning ball; 8. Brake block rocker arm; 9. Brake block; 10. Brake lift rod; 11. Return spring; 12. Brake bearing; 13. Bearing fixing post; 14. Bearing mounting seat; 15. Bearing cover; 16. Brake action cover. Detailed Implementation

[0021] Example

[0022] like Figure 1 and Figure 2 This embodiment provides a rear wheel brake steering device for a medical X-ray machine, including a rear wheel steering base 3. The rear wheel steering base 3 includes two side plates 31 and a hollow cylindrical mounting part 32. The two side plates are connected to the rear wheel body 1 through a rear wheel fixing pin 2. The upper part of the side plate 31 is provided with a through hole 33. A rocker arm fixing shaft 34 is fixedly provided on the outside of the through hole 33. The upper shaft of the rocker arm fixing shaft is connected to the brake block rocker arm 8. A brake lifting rod 10 is provided inside the mounting part. The bottom of the brake lifting rod 10 is axially connected to the brake block rocker arm 8. The bottom of the brake block rocker arm 8 is provided with an inner groove 81, and the inner groove is provided with a brake block 9. The brake lifting rod... The top of the bearing fixing column 13 is fixedly connected to the bearing fixing column 13. The outer ring of the top of the bearing fixing column 13 is connected to the brake bearing 12. The outer ring of the brake bearing 12 is connected to the bearing mounting seat 14. The top of the bearing mounting seat 14 is connected to the bearing cover 15. The bearing cover 15 is connected to the brake cover 16. The middle outer ring of the rear wheel steering base 3 is fixedly connected to the rear wheel steering sprocket 4. The outer wall of the rear wheel steering base 3 above the rear wheel steering sprocket 4 is provided with a steering bearing 6. The outer ring of the steering bearing 6 is connected to the rear wheel fixing plate 5. The rear wheel fixing plate 5 is provided with a set of positioning beads 7. The rear wheel steering base 3 is provided with a set of limiting grooves 35 that are adapted to the positioning beads 7.

[0023] In this embodiment, the outer ring of the brake lift rod 10 is provided with a return spring 11. The bottom of the return spring 11 abuts against the brake lift rod 10, and the top of the return spring 11 abuts against the top of the internal slot of the rear wheel steering base 3 when the brake lift rod 10 is lifted.

[0024] In this embodiment, the upper part of the brake lifting rod 10 is provided with a mounting groove 101, the bearing fixing post 13 is inserted into the mounting groove 101 and threadedly fastened to the mounting groove, and the top of the bearing fixing post 13 presses against the brake bearing 12.

[0025] In this embodiment, there are 4 positioning beads 7.

[0026] In this embodiment, brake block 9 is a rubber block.

[0027] In this embodiment, the swing amplitude of the brake block rocker arm is 10°.

[0028] In this embodiment, during assembly, the rear wheel body 1 is fixed to the rear wheel steering base 3 via the rear wheel fixing pin 2. The rear wheel steering sprocket 4 is fitted onto the rear wheel steering base 3 and secured with M5 countersunk head screws. The brake block 9 is glued to the brake block rocker arm 8, and the brake block rocker arm 8 is connected to the rear wheel steering base 3 via a pin. The brake lift rod 10 is fitted onto the rear wheel steering base 3 and connected to the brake block rocker arm 8 via a pin, while a return spring 11 is installed. The rear wheel fixing plate 5 and the rear wheel steering base 3 are connected via a steering bearing 6. The positioning ball 7 is installed into the rear wheel fixing plate 5 to achieve positioning at 0 degrees and 90 degrees, and the positioning force is adjusted by controlling the engagement depth. The brake bearing 12 is installed into the bearing mounting seat 14 and secured with the bearing cover 15. Finally, the bearing is fitted onto the brake lift rod 10 and secured with the bearing fixing post 13 pressing down on the inner ring of the bearing. Finally, the brake actuation cover 16 is connected to the bearing cover 15 with M5 screws.

[0029] In this embodiment, when working, such as Figure 3 When an upward force is applied to the brake cover 16, the brake lift rod 10 moves upward, causing the bottom brake block 9 of the brake block rocker arm 8 to clamp the side of the rear wheel, thus achieving braking. Conversely, the brake is unlocked. Figure 4 When the chain drives the rear wheel steering sprocket 4 to move, the brake bearing 12 ensures that steering and braking are independent and do not affect each other.

[0030] This utility model provides a concept and method for a rear wheel brake steering device for a medical X-ray machine. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A rear wheel brake and steering device for a medical X-ray machine, characterized in that, The rear wheel steering base (3) includes two side plates (31) and a hollow cylindrical mounting part (32). The two side plates are connected to the rear wheel body (1) through the rear wheel fixing pin (2). The upper part of the side plate (31) is provided with a through hole (33). A rocker arm fixing shaft (34) is fixedly provided on the outside of the through hole (33). The upper shaft of the rocker arm fixing shaft is connected to the brake block rocker arm (8). The mounting part is provided with a brake lifting rod (10). The bottom of the brake lifting rod (10) is connected to the shaft of the brake block rocker arm (8). The bottom of the brake block rocker arm (8) is provided with an inner groove (81). The inner groove is provided with a brake block (9). The top of the brake lifting rod (10) is fixedly connected to a bearing fixing column (1). 3) The top outer ring of the bearing fixing column (13) is connected to the brake bearing (12), the outer ring of the brake bearing (12) is connected to the bearing mounting seat (14), the top of the bearing mounting seat (14) is connected to the bearing cover (15), the bearing cover (15) is connected to the brake action cover (16), the middle outer ring of the rear wheel steering base (3) is fixedly connected to the rear wheel steering sprocket (4), the outer wall of the rear wheel steering base (3) above the rear wheel steering sprocket (4) is provided with a steering bearing (6), the outer ring of the steering bearing (6) is connected to the rear wheel fixing plate (5), the rear wheel fixing plate (5) is provided with a set of positioning beads (7), and the rear wheel steering base (3) is provided with a set of limiting grooves that are compatible with the positioning beads (7).

2. The rear wheel brake and steering device for a medical X-ray machine according to claim 1, characterized in that, The outer ring of the brake lift rod (10) is provided with a return spring (11). The bottom of the return spring (11) abuts against the brake lift rod (10), and the top of the return spring (11) abuts against the top of the internal slot of the rear wheel steering base (3) when the brake lift rod (10) is lifted.

3. The rear wheel brake and steering device for a medical X-ray machine according to claim 1, characterized in that, The upper part of the brake lifting rod (10) is provided with an installation groove (101), the bearing fixing column (13) is inserted into the installation groove (101) and threadedly fastened to the installation groove, and the top of the bearing fixing column (13) presses against the brake bearing (12).

4. A rear wheel brake and steering device for a medical X-ray machine according to claim 1, characterized in that, The positioning beads (7) are provided in four parts.

5. A rear wheel brake and steering device for a medical X-ray machine according to claim 1, characterized in that, The brake block (9) is a rubber block.

6. A rear wheel brake and steering device for a medical X-ray machine according to claim 1, characterized in that, The swing amplitude of the brake block rocker arm (8) is 10°.

Images