Braking system and c-arm machine

Abstract

The application provides a brake system and a C-arm machine. The brake system comprises a brake shaft, a brake pedal, a transmission assembly and a brake assembly. The transmission assembly comprises a first transmission rod fixedly connected with the brake shaft, a second transmission rod hingedly connected with the first transmission rod, and a third transmission rod hingedly connected with the second transmission rod, wherein the third transmission rod is connected with the brake assembly, and the hinged ends of the second transmission rod and the third transmission rod are limited to move along a preset path. The above structure can realize stable braking of the brake system. Compared with the prior art, the application realizes the transmission design of the three transmission rods through special design, which can reduce the number of moving members and improve the stability of the brake system, thereby providing guarantee for stable use of the C-arm machine. In addition, the application can simplify the movement trajectory of the moving members in the transmission mechanism, thereby reducing the difficulty of the applicability design of the brake system of different machines and equipment.

Description

Technical Field

[0001] This application relates to the field of braking equipment technology, and in particular to a braking system and a C-arm machine. Background Technology

[0002] C-arm fluoroscopy is mainly used in operating rooms to provide X-ray exposure and fluoroscopy for patients during surgery, obtaining real-time images to assist clinicians in performing operations. Operators control the C-arm's mechanical movements, including lifting, sliding, rotating, moving forward and backward, and tilting, to obtain continuous frontal and lateral images or single images from different angles for surgical use. To perform these operations, the operator needs to move the C-arm to a suitable position and brake it using a braking device.

[0003] Current C-arm crane braking systems are generally divided into two categories: one is wheel brakes, which use a foot-operated locking mechanism to lock the casters and achieve braking. The foot pedal for wheel brakes is usually designed above the casters, making operation inconvenient; also, the steering wheels may still rotate during wheel brake braking, leading to machine instability. The second type is a strut-based ground-support braking system. This system uses a foot pedal and a linkage mechanism to apply a downward force to the strut, causing it to contact the ground for support and thus braking. Ground-support braking is more reliable than wheel brakes, but its transmission mechanism often uses a complex multi-link structure, leading to reduced stability. Summary of the Invention

[0004] This application provides a braking system and a C-arm machine to solve the problem that the complex transmission process of the braking system leads to poor stability of the braking system.

[0005] The braking system provided in the first aspect of this application is used to brake a movable object, and the braking system includes:

[0006] The brake shaft is installed at the bottom of the movable object in a manner perpendicular to the support direction of the movable object, and can rotate circumferentially around its own axis.

[0007] Brake pedal, fixed to brake shaft;

[0008] The transmission assembly includes: a first transmission rod fixedly connected to the brake shaft, a second transmission rod hinged to the first transmission rod, and a third transmission rod hinged to the second transmission rod; the hinged ends of the second and third transmission rods are configured to move along a preset path.

[0009] The braking assembly is hinged to the third transmission rod and can move up and down along the support direction;

[0010] The transmission and braking components move in the same plane.

[0011] Optionally, the braking system also includes a frame fixed to the movable object, the frame having a guide groove, and a first pin at the hinge end of the second and third transmission rods, the first pin being configured to move along the guide groove.

[0012] Optionally, the two ends of the guide groove are located on both sides of the movement path of the braking assembly.

[0013] The second aspect of this application provides a C-arm machine, including the braking system provided in the first aspect.

[0014] The braking system provided in this application includes a brake shaft, a brake pedal, a transmission assembly, and a braking component. The transmission assembly includes a first transmission rod fixedly connected to the brake shaft, a second transmission rod hinged to the first transmission rod, and a third transmission rod hinged to the second transmission rod via a first pin. The third transmission rod is connected to the braking component, and the first pin is restricted to move along a preset path. Compared to existing braking systems using a four-bar linkage, this application achieves a three-bar transmission design through a special design. On the one hand, it reduces the number of moving parts, improves the stability of the braking system, and ensures the stable use of the C-arm machine; on the other hand, it simplifies the movement trajectory of the moving parts in the transmission mechanism, thereby reducing the difficulty of designing braking systems suitable for different machines. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure in this application where the braking system is installed at the bottom of a movable object;

[0017] Figure 2 This is a schematic diagram of the braking system in braking state in an embodiment of this application;

[0018] Figure 3 This is a cross-sectional view perpendicular to the brake axis when the braking system is in braking state according to an embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the braking system in the unlocked state in an embodiment of this application;

[0020] Figure 5 This is a cross-sectional view perpendicular to the brake axis when the braking system is in the unlocked state in an embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the structure of multiple limiting slots of the guide groove in the embodiments of this application;

[0022] Figure 7 This is a schematic diagram of the structure of a limiting slot of the guide groove in an embodiment of this application;

[0023] Figure 8 This is a schematic diagram of the arc-shaped guide groove in the embodiment of this application.

[0024] Illustration:

[0025] Among them, 10-brake shaft, 20-brake pedal, 31-first transmission rod, 32-second transmission rod, 321-first pin, 322-second pin, 33-third transmission rod, 41-lifting component, 42-first elastic component, 43-support component, 50-frame, 51-guide groove, 511-first end, 512-second end, 513-limiting groove, 60-guide component, 70-brake disc, 80-second elastic component, 200-movable object, 210-intermediate wheel, 220-front wheel. Detailed Implementation

[0026] The embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described below do not represent all embodiments consistent with this application. They are merely examples of systems and methods consistent with some aspects of this application as detailed in the claims.

[0027] During the design process, the applicant discovered that existing ground-supporting braking transmission mechanisms typically employ a complex four-bar linkage structure. This leads to a series of problems: Firstly, the complex motion trajectory necessitates adaptive structural adjustments to the braking system to accommodate the varying internal component placements of different machines. The complex four-bar linkage structure unnecessarily complicates the design. Secondly, a higher number of moving components inevitably reduces the mechanism's stability. Therefore, the four-bar linkage reduces the braking system's stability to some extent, resulting in suboptimal braking performance. This is a significant issue that cannot be ignored for C-arm cranes requiring high precision.

[0028] Therefore, this application proposes a braking system and a C-arm boom machine using the braking system. Through a special design, the complexity of the transmission mechanism in the braking system is reduced, thereby decreasing the number of moving parts, improving the stability of the braking system, and ensuring the stable use of the C-arm boom machine. Simultaneously, this design simplifies the motion trajectory of the moving parts in the transmission mechanism, thus reducing the difficulty of designing braking systems suitable for different machines. Furthermore, the braking system provided in this application is primarily manufactured using conventional tubing, bars, and sheet metal parts, resulting in low cost and ease of manufacturing and practical application.

[0029] Specifically, Figure 1 This is a schematic diagram of a braking system installed on a movable object according to an embodiment of this application. Figure 1 As shown, the braking system provided in this application can be installed on the bottom of a movable object 200 for braking the movable object 200. The braking system includes a brake shaft 10, a brake pedal 20, a transmission assembly, and a braking assembly.

[0030] Brake shaft 10 is disposed at the bottom of movable object 200. The extension direction of brake shaft 10 is perpendicular to the support direction of movable object 200, and brake shaft 10 can rotate circumferentially around its own axis. For example, when the support direction of movable object 200 is vertical, the extension direction of brake shaft 10 is horizontal.

[0031] The brake pedal 20 is fixedly mounted on the brake shaft 10 and is used to transmit circumferential rotational power to the brake shaft 10. That is, when the brake pedal 20 rotates, the brake shaft 10, which is fixedly connected to the brake pedal 20, can rotate along with the rotation of the brake pedal 20. For example, when the user presses the brake pedal 20 in a clockwise direction, causing the brake pedal 20 to rotate in a clockwise direction, the brake shaft 10 will also rotate clockwise with the brake pedal 20.

[0032] like Figure 2 and Figure 3As shown, the transmission assembly includes a first transmission rod 31, a second transmission rod 32, and a third transmission rod 33. The first transmission rod 31 is fixedly connected to the brake shaft 10. Thus, when the brake shaft 10 is driven by the brake pedal 20 to produce circumferential movement, the first transmission rod 31 is driven by the brake shaft 10 to rotate, and the rotation direction of the first transmission rod 31 is the same as the rotation direction of the brake shaft 10. The second transmission rod 32 is hinged to the first transmission rod 31. Specifically, one end of the first transmission rod 31 is fixedly connected to the brake shaft 10, and the end of the first transmission rod 31 away from the brake shaft 10 is hinged to the second transmission rod 32 via a second pin 322. The end of the second transmission rod 32 away from the first transmission rod 31 is connected to the third transmission rod 33, wherein the third transmission rod 33 is connected to the second transmission rod 32 via the first pin 321. Furthermore, the first pin 321 is limited to move along a predetermined path, that is, the hinged ends of the second transmission rod 32 and the third transmission rod 33 are configured to move along the predetermined path. Therefore, during the process in which the first transmission rod 31 drives the second transmission rod 32 to move, and then drives the third transmission rod 33 to move, the movement trajectories of the second transmission rod 32 and the third transmission rod 33 are also limited.

[0033] The end of the third transmission rod 33 furthest from the second transmission rod 32 is connected to a braking assembly. The braking assembly is slidably connected to the bottom of the movable object 200, and during the movement of the third transmission rod 33, it drives the braking assembly to move upwards or downwards along the support direction. That is, when a force is applied to the brake shaft 10 via the brake pedal 20, the first transmission rod 31, the brake shaft 10, and the brake pedal 20 rotate synchronously. Simultaneously, the braking assembly and the transmission assembly move on the same plane, which helps ensure the braking stability of the braking system. The "same plane" mentioned here should not be understood as being absolutely located in the same plane in a mathematical or geometric sense. Factors such as manufacturing errors, installation errors, and the thickness of each mounting component should be considered. The aforementioned "same plane" can be understood as the deviation of the center plane of each component from the plane of motion being within a reasonable range. This deviation includes offset errors and angular errors.

[0034] The following is based on Figure 2 and Figure 3 Taking the braking system provided in this application as an example, the braking process is described.

[0035] The movable object 200 needs to be moved during use, and when it moves to the designated position, it needs to be braked to ensure that the movable object 200 is stably in the designated position for the convenience of subsequent operations.

[0036] During the braking process of the movable object 200, the user needs to press the brake pedal 20. Figure 3 The position of the brake pedal 20 can be found in the diagram (not shown). Figure 2Located on both sides of the bottom of the movable object 200 (for user convenience). The user's foot rests on the brake pedal 20, with the ball of the foot and heel corresponding to the positions of the brake pedal 20 on either side of the brake shaft 10. Figure 2 For example, the position of the user's foot corresponds to the right side of the brake pedal 20 diagram, and the position of the user's heel corresponds to the left side of the brake shaft 10 diagram.

[0037] When braking is required on the movable object 200, the user applies pressure with their heel to cause the brake pedal 20 to rotate the brake shaft 10 counterclockwise. This counterclockwise rotation of the brake shaft 10 causes the first transmission rod 31, which is fixedly connected to it, to rotate counterclockwise, thereby pushing the second transmission rod 32 towards... Figure 2 The first pin 321 is restricted to moving to the left in a predetermined direction, thus, the second transmission rod 32 is pushed towards the left. Figure 2 When moving to the left, the end of the third transmission rod 33 furthest from the second transmission rod 32 is pushed by the second transmission rod 32, causing it to move downwards. Simultaneously, the end of the third transmission rod 33 furthest from the second transmission rod 32 is hinged to the top of the braking assembly. Thus, the third transmission rod 33 pushes the braking assembly downwards, and the bottom of the braking assembly contacts the braking surface for braking.

[0038] The following is based on Figure 4 and Figure 5 Taking this application as an example, the unlocking process of the braking system provided in this application is described.

[0039] During the process of unlocking the movable object 200, the user needs to press the brake pedal 20. Figure 5 The position of the brake pedal 20 can be found in the diagram (not shown). Figure 4 Located on both sides of the bottom of the movable object 200 (for user convenience). The user's foot rests on the brake pedal 20, with the ball of the foot and heel corresponding to the positions of the brake pedal 20 on either side of the brake shaft 10. Figure 4 For example, the position of the user's foot corresponds to the right side of the brake pedal 20 diagram, and the position of the user's heel corresponds to the left side of the brake shaft 10 diagram.

[0040] When the movable object 200 needs to be unlocked, the user applies pressure with their foot, causing the brake pedal 20 to rotate clockwise, which in turn rotates the brake shaft 10. This clockwise rotation of the brake shaft 10 causes the first transmission rod 31, which is fixedly connected to it, to rotate clockwise, pulling the second transmission rod 32 towards... Figure 4 The first pin 321 is restricted to move to the right in a predetermined direction, thus, the second transmission rod 32 is pulled towards the right. Figure 4 When moving to the right, the end of the third transmission rod 33 furthest from the second transmission rod 32 is pulled by the second transmission rod 32, causing it to move upwards. Simultaneously, the end of the third transmission rod 33 furthest from the second transmission rod 32 is hinged to the top of the braking assembly. Thus, the third transmission rod 33 pulls the braking assembly upwards, causing the bottom of the braking assembly to gradually separate from the braking surface, and the distance between the bottom of the braking assembly and the braking surface to continuously increase, thereby completing the entire unlocking process. After unlocking, the movable object 200 can move freely on the braking surface.

[0041] It is understandable that if an object is in an absolutely fixed state, it has no unstable state; that is, it can be considered to be in a stable state at all times, with a stability coefficient of 1. However, once an object is in motion, its stability coefficient decreases. In the transmission process, the number of moving transmission rods affects the stability of the transmission components. Let the stability coefficient of each transmission rod be X. i And satisfy 0 < X i <1. Therefore, the overall stability coefficient of the entire transmission assembly can be expressed as X = X1 * X2 * X3 ... X n Where n represents the number of moving components. Without considering the influence of factors such as the strength of the transmission rod itself and the operating environment, the more transmission rods there are, the lower the overall stability of the transmission assembly. Simultaneously, the more transmission rods there are, the more complex the motion trajectory of the entire transmission assembly becomes, which is less conducive to the overall design of the braking system. When designing the internal structure of the equipment, not only the installation of internal components must be considered, but also the planning of space to avoid obstructing the trajectory of the transmission components in the braking system, greatly increasing the unnecessary workload for designers. Conversely, the fewer transmission rods included in the transmission assembly, the simpler the motion trajectory, the better the stability, thereby improving the braking stability of the entire braking system, and reducing the design difficulty. Compared with the prior art, the transmission assembly provided in this application embodiment only includes a first transmission rod 31, a second transmission rod 32, and a third transmission rod 33. Compared with the complex structure of at least four transmission rods in the prior art, this greatly simplifies the complexity of the transmission assembly, resulting in a relatively simple motion trajectory and effectively improving the stability of the braking system. At the same time, it also reduces the workload of designers.

[0042] like Figure 5 As shown, the braking system also includes a frame 50. The frame 50 is fixedly mounted on the bottom of the movable object 200, and a guide groove 51 is provided on the frame 50. The first pin 321 is restricted to move within the guide groove 51, so that the first pin 321 moves along a preset path. The preset path is understood as the length direction of the guide groove, specifically determined according to the actual shape of the guide groove. Generally, if the support direction is vertical, the length direction of the guide groove can be horizontal.

[0043] Specifically, by providing a frame 50 with a guide groove 51, the movement trajectory of the first pin 321 is restricted. This allows the first pin 321 to slide stably within the guide groove 51 during the process of the first transmission rod 31 pushing or pulling the second transmission rod 32.

[0044] like Figure 4 and Figure 5 As shown, the guide groove 51 includes a first end 511 and a second end 512 respectively located on both sides of the movement path of the braking assembly. That is, the path of the braking assembly, including the extension line of the path, lies between the first end 511 and the second end 512 of the guide groove 51.

[0045] Specifically, when the brake pedal drives the brake shaft 10 to rotate clockwise, the first transmission rod 31 rotates clockwise with the brake shaft 10, and the second transmission rod 32 pulls the first pin 321 to move to the right. Simultaneously, the third transmission rod 33 rotates clockwise around the first pin 321, thereby pulling the brake assembly upwards parallel to the support direction to unlock it. The first end 511 is located on the right side of the guide groove 51. Therefore, when the brake assembly moves upwards parallel to the support direction, and the first pin 321 moves to the position of the first end 511, the braking system is in the unlocked state, and the movable object 200 can move freely on the brake surface.

[0046] When the brake pedal 20 drives the brake shaft 10 to rotate counterclockwise, the first transmission rod 31 rotates counterclockwise with the brake shaft 10, and the second transmission rod 32 pushes the first pin 321 to move to the left. Simultaneously, the third transmission rod 33 rotates counterclockwise around the first pin 321, thereby pushing the brake assembly to move downwards parallel to the support direction, thus applying the brakes. Since the second end 512 is located to the left of the guide groove 51, when the brake assembly moves downwards parallel to the support direction, the first pin 321 moves to the position of the second end 512, the braking system is in a braking state, and the movable object 200 cannot move freely.

[0047] In this design, the path of the braking assembly lies between the first end 511 and the second end 512 of the guide groove 51. That is, the central axis of the braking assembly, including its extension, is located between the first end 511 and the second end 512. This allows the first pin 321 to move to the second end 512 when the braking assembly is in the braking state. At this point, the third transmission rod 33 forms an angle with the central axis of the braking assembly, enabling the third transmission rod 33 to stably push the braking assembly, thus putting the braking assembly in the braking state. During braking, the guide groove 51 not only guides the sliding of the first pin 321, allowing the third transmission rod 33 to apply a downward thrust to the braking assembly for braking, but also limits the position of the first pin 321 after braking, ensuring the stability of the braking system. Existing transmission assemblies cannot achieve this limiting function, requiring additional limiting components or structures to ensure the stability of the braking system.

[0048] In other words, when the first pin 321 moves to the left side of the brake assembly's central axis, the brake assembly moves downward and contacts the brake surface, completing the braking process and locking the entire transmission mechanism. At this time, the reaction force from the ground on the brake assembly is applied to the first pin 321 via the third transmission rod 33. The first pin 321 is located at the second end 512 of the guide groove 51. If the first pin 321 wants to move to the first end 511, the third transmission rod 33 must swing to the right. Swinging the third transmission rod 33 to the right requires crushing the brake assembly downward to achieve this. However, at this time, the brake assembly is subjected to an upward reaction force from the brake surface and cannot move downward on its own; external force is required. Therefore, when the first pin 321 is stably held at the second end 512, if a certain rotational force is not applied to the brake pedal 20, the first pin 321, supported by the third transmission rod 33, cannot cross the central axis / extension line of the brake assembly from the second end 512. This ensures the braking system's reliability and prevents it from failing due to other interference.

[0049] The stability of the braking system achieved by the above scheme depends on the first pin 321 moving from the guide groove 51 near the first end 511 across the braking assembly's movement path to the side near the second end 512, and then stably stopping at the second end 512 under the action of the third transmission rod 33. However, in actual use, there may be braking requirements based on different states of the C-arm boom. For example, when the C-arm boom is working, it requires a stable braking state, at which point the C-arm boom cannot move at all. During the movement of the C-arm boom, temporary braking is needed to adjust its position; in this case, only simple braking of the C-arm boom is required. To solve this problem, such as... Figure 6As shown, the inner wall of the guide groove 51 is provided with at least one limiting slot 513, which is located between the first end 511 and the second end 512 of the guide groove 51. Specifically, multiple first limiting slots 513 are arranged opposite each other on the side closer to the second end 512. It can be understood that the braking system is in a braking state during the movement of the first pin 321 toward the second end 512 of the guide groove 51.

[0050] Specifically, multiple limiting slots 513 can be equidistantly arranged on the guide groove 51. When the first pin 321 is inserted into one of the limiting slots 513, the braking assembly is locked in a preset position. The limiting slots 513 are opened upwards on the inner wall of the guide groove 51, thus restricting the movement trajectory of the first pin 321 within the limiting slots 513, thereby locking the third transmission rod 33.

[0051] like Figure 6 and combined Figure 2 and Figure 3 As shown, during the process of the first pin 321 moving to the left within the guide groove 51 along a preset direction, the braking system brakes the movable object 200. Different degrees of braking are achieved by varying the degree of leftward movement of the first pin 321 within the guide groove 51. In other words, the first pin 321 is confined within different limiting slots 513, and the distance between the bottom of the braking assembly and the braking surface along the support direction is different, thereby adapting to different braking requirements.

[0052] In some feasible embodiments, multiple limiting slots 513 are disposed on one side relative to the second end 512, and the distance between any two adjacent limiting slots 513 can be the same or different. Figure 6 As shown, the distance between two adjacent limiting slots 513 is the same. In this application, the guide groove 51 is designed to have at least one limiting slot 513 so that the first pin 321 after braking falls into the limiting slot 513, thereby reducing the possibility of the first pin 321 disengaging from the limiting slot 513.

[0053] like Figure 7 As shown, a limiting slot 513 is provided at the second end 512. Unlike the embodiments described above that provide multiple limiting slots 513, this embodiment provides only one limiting slot 513, which is located at the second end 512. That is, when the first pin 321 moves to the left end position of the guide groove 51, the first pin 321 is limited, thereby locking the third transmission rod 33 to ensure the braking stability of the movable object 200.

[0054] like Figure 8As shown, the guide groove 51 is an arc-shaped structure with its middle section curving downwards along the support direction and both ends protruding upwards along the support direction. Because the guide groove 51 is an arc-shaped structure, the first end 511 and the second end 512 of the guide groove 51 protrude upwards, forming a natural limiting slot 513. When the first pin 321 moves to the position of the second end 512, since the second end 512 protrudes upwards, it already has a limiting function, so there is no need to additionally set the limiting slot 513. On the other hand, the guide groove 51 is designed with a downward-curving structure. During the movement of the first pin 321 from the first end 511 to the second end 512, the first half involves a downward movement, allowing the braking assembly to move downwards in the support direction more quickly, i.e., enabling rapid braking during the braking process. The second half involves an upward movement, meaning that after reaching a stable braking state, the first pin 321 will not easily move from the second end 512 down to the first end.

[0055] Therefore, the braking system provided in this application embodiment includes two different types of guide grooves 51, and the guide grooves 51 can be selected according to the braking requirements. At the same time, the limit groove 513 can be selected according to the corresponding guide groove 51.

[0056] In some embodiments, the braking system further includes a guide 60 disposed at the bottom of the movable object, which guides the braking assembly to move vertically in the support direction. Specifically, the guide 60 in this embodiment may be a cylindrical structure, which can be defined as a guide cylinder. The guide cylinder is fixed to the bottom of the movable object 200 in a manner parallel to the support direction, and the braking assembly is inserted inside the guide cylinder and can slide vertically relative to the guide cylinder.

[0057] Specifically, the guide cylinder provides the braking assembly with space for sliding up and down along the support direction, while also protecting the braking assembly. The guide cylinder is positioned near the frame 50 and below the frame 50.

[0058] In some embodiments, the braking assembly includes a lifting member 41, a first elastic member 42, and a support member 43. The lifting member 41 is slidably disposed inside the guide cylinder. Simultaneously, the top of the lifting member 41 is hinged to the end of the third transmission rod 33 away from the second transmission rod 32, so that when the third transmission rod 33 is pulled or pushed by the second transmission rod 32, the third transmission rod 33 can pull or push the lifting member 41 upward or downward along the support direction to realize the unlocking and braking process of the braking system.

[0059] The lifting component 41 also adopts a cylindrical structure, which is defined as a lifting cylinder in this embodiment. Specifically, the lifting cylinder has a cavity in the middle, and the bottom end of the cavity extends into the interior of the lifting cylinder along its length. The first elastic member 42 is disposed in the cavity. The support member 43 is inserted into the cavity from the bottom of the lifting cylinder, and its insertion depth into the cavity can be adjusted according to the elastic force of the first elastic member 42. In this embodiment, the support member 43 adopts a rod-shaped structure, which can be specifically defined as a support rod.

[0060] Specifically, a first elastic element 42 and a support element 43 are arranged sequentially from top to bottom along the support direction. That is, the first elastic element 42 is located at the upper part of the receiving cavity, and the top of the lifting cylinder is hinged to the end of the third transmission rod 33 away from the second transmission rod 32.

[0061] In some embodiments, the bottom of the receiving cavity tapers inward to form a first blocking portion. The top of the support rod expands outward to form a second blocking portion, which is blocked by the first blocking portion to prevent the support rod from slipping off the bottom of the lifting cylinder. A notch is provided on the first blocking portion to accommodate the second blocking portion for easy assembly of the support rod and the lifting cylinder.

[0062] Because a first elastic element 42 is provided between the lifting cylinder and the support rod, the two are elastically connected. When the braking surface is uneven, the first elastic element 42 will automatically adjust the height between the support rod and the braking surface, thereby ensuring the reliability of braking. In this embodiment, the first elastic element 42 can be a compression spring, or other elastic elements that mainly achieve compression deformation.

[0063] In a further embodiment, the braking assembly also includes a brake disc 70, which is disposed at the bottom of the support rod.

[0064] Specifically, the brake disc 70 has a flat surface structure so that when the braking assembly moves downward along the support direction to brake the movable object 200, the brake disc 70 is in contact with the braking surface. The surface area of ​​the brake disc 70 is larger than that of the support rod. Thus, when the brake disc 70 is in contact with the braking surface, it reduces local pressure, protects the braking surface / ground, and ensures the braking stability of the movable object 200.

[0065] In some embodiments, the braking system further includes a second elastic element 80, one end of which is disposed at the swing end of the first transmission rod 31, i.e., the end of the first transmission rod 31 away from the brake shaft 10. The other end of the second elastic element 80 is disposed on the bottom of the movable object 200. Specifically, the end of the second elastic element 80 connected to the bottom of the movable object 200 is located directly above the brake shaft 10.

[0066] During the rotation of the first transmission rod 31, the second elastic element 80 rotates along with the first transmission rod 31, applying a force to the first transmission rod 31. When the first transmission rod 31 swings away from the brake assembly from the direction parallel to the support, the force applied by the second elastic element 80 keeps the first transmission rod 31 swinging away from the brake assembly. In this case, the second elastic element 80, based on its own compression deformation, enables the first transmission rod 31 to swing rapidly away from the brake assembly, thereby allowing the brake assembly to quickly release the brake and achieve rapid reset of the transmission assembly, brake shaft 10, and brake pedal 20. When the first transmission rod 31 swings closer to the brake assembly from the direction parallel to the support, the force applied by the second elastic element 80 keeps the first transmission rod 31 swinging closer to the brake assembly. At this time, the second elastic element 80 is also in a compressed deformation state. Based on its own elastic deformation, it can cause the first transmission rod 31 to swing rapidly towards the side closer to the braking assembly. Through the action of the transmission assembly, braking can be achieved quickly, and the first pin 321 can be stably held at the second end 512, improving the braking stability of the braking system. Thus, whether the braking system is in the unlocked or braking state, the second elastic element 80 is in a compressed state. It can apply an upward oblique thrust to the second pin 322, which in turn applies a certain thrust to the first pin 321 through the second transmission rod 32, keeping the first pin 321 in a limited position and further improving the stability of the braking system. The second elastic element 80 includes a telescopic link and a compression spring sleeved on the telescopic link. One end of the telescopic link is connected to the first pin 321, and the other end is connected to the bottom of the movable object 200. Furthermore, the connection position between the telescopic link and the bottom of the movable object 200 is located directly above the brake shaft 10 along a direction parallel to the support direction.

[0067] like Figure 2 and Figure 3As shown, when braking is required, the operator depresses the brake pedal 20 and applies downward pressure to the left side of the brake pedal 20. This causes the brake pedal 20 to drive the first transmission rod 31 to rotate counterclockwise synchronously via the brake shaft 10. The first transmission rod 31 pushes the second transmission rod 32 to move to the left, which in turn causes the first pin 321 to move to the left along the guide groove 51. This, in turn, causes the third connecting rod 33 to push the lifting cylinder downward until the brake disc 70 at the bottom of the support rod is in close contact with the brake surface to achieve braking. At this time, the first pin 321 at the connection between the second transmission rod 32 and the third transmission rod 33 moves from the right side of the center line of the lifting cylinder to the left side of the center line and abuts against the left side of the guide groove 51, forming a dead point, so that the entire braking system reaches a stable braking state. Furthermore, during the counterclockwise rotation of the first transmission rod 31, the second elastic element 80 also rotates counterclockwise until it deflects to the left. Once the braking system reaches a stable braking state, the thrust generated by the deformation of the second elastic element 80 continues to act on the first transmission rod 31, causing the first transmission rod 31 to maintain a counterclockwise rotation trend, thereby further improving the stability of the braking system during braking.

[0068] like Figure 4 and Figure 5 As shown, when unlocking is required, the operator depresses the brake pedal 20 and applies downward pressure to the right side of the brake pedal 20. This causes the brake pedal 20 to drive the first transmission rod 31 to rotate clockwise synchronously via the brake shaft 10. The first transmission rod 31 pulls the second transmission rod 32 to the right, thereby causing the first pin 321 at the connection between the second transmission rod 32 and the third transmission rod 33 to move to the right along the guide groove 51, from the dead point on the left side of the center line of the lifting cylinder to the right side of the center line, thus achieving the unlocking purpose. The third transmission rod 33 pulls the lifting cylinder upward, causing the brake disc 70 at the bottom of the support rod to lift off the ground. At the same time, the first transmission rod 31 drives the second elastic element 80 to rotate clockwise until the second elastic element 80 deflects to the right. The second elastic element 80, relying on its own compression deformation, returns the first transmission rod 31 and the brake pedal 20 to their initial positions.

[0069] In some embodiments, a braking system includes two sets of corresponding transmission components and two sets of opposing braking components.

[0070] Specifically, the two sets of transmission components and braking components are respectively arranged on opposite sides of the bottom of the movable object 200, so as to... Figure 1 For example, two sets of opposing transmission and braking components are respectively arranged on the left and right sides of the movable object 200. That is, a transmission component and a braking component are respectively arranged near both ends of the brake shaft 20, and are connected according to the aforementioned schemes. Through these two sets of transmission and braking components, the movable object 200 can be braked by the braking components on both sides, improving the convenience of operation.

[0071] In some embodiments, there are two brake pedals 20, which are respectively installed at both ends of the brake shaft 10.

[0072] Specifically, a brake pedal 20 is installed on the outer side of each end of the brake shaft 10. By stepping on the brake pedal 20, the brake shaft 10 can be rotated. This can accommodate the user's different stepping habits. The operator can step on the brake pedal 20 with their left or right foot respectively to achieve braking with the right foot, or braking with the left foot, or braking with both feet.

[0073] In some embodiments, the movable object 200 has wheels at its bottom. The wheels include a middle wheel 210 and a front wheel 220.

[0074] Specifically, the movable object 200 moves via rollers. Thus, when the movable object 200 is braked, the rollers are restricted and cannot move; when the movable object 200 is unlocked, the rollers can move freely.

[0075] This application also provides a C-arm machine, the bottom of which is equipped with the braking system included in any of the above embodiments. Therefore, it includes all the beneficial technical effects of any of the above braking system embodiments, which will not be elaborated here. Specifically, the C-arm machine is a medical device used in operating rooms, emergency rooms, orthopedic departments, etc., and can also be called a C-arm X-ray machine.

[0076] In some embodiments, the bottom of the C-arm machine is also equipped with casters to enable movement of the C-arm machine.

[0077] Similar parts between the embodiments provided in this application can be referred to mutually. The specific implementation methods provided above are only a few examples under the overall concept of this application and do not constitute a limitation on the scope of protection of this application. For those skilled in the art, any other implementation methods extended from the solution of this application without creative effort shall fall within the scope of protection of this application.

Claims

1. A braking system for braking a movable object, characterized in that, The braking system includes: The brake shaft is mounted on the bottom of the movable object in a manner perpendicular to the support direction of the movable object, and can rotate circumferentially around its own axis. Brake pedal, fixed to the brake shaft; The transmission assembly includes: a first transmission rod fixedly connected to the brake shaft, a second transmission rod hinged to the first transmission rod, and a third transmission rod hinged to the second transmission rod; the hinged ends of the second transmission rod and the third transmission rod are configured to move along a preset path; the hinged ends of the second transmission rod and the third transmission rod are provided with a first pin. The braking assembly is hinged to the third transmission rod and can move up and down along the support direction; The transmission assembly and the braking assembly move in the same plane; A frame is fixed to the movable object. A guide groove is provided on the frame. At least one limiting slot is provided on the inner wall of the guide groove. The first pin is configured to move along the guide groove. When the first pin is inserted into the limiting slot, the braking assembly is locked at least in a preset position along the support direction.

2. The braking system according to claim 1, characterized in that, The two ends of the guide groove are respectively located on both sides of the movement path of the braking component.

3. The braking system according to claim 1, characterized in that, The guide groove is configured as an arc-shaped structure that bends downward in the middle along the support direction.

4. The braking system according to claim 1, characterized in that, Also includes: A guide, disposed on the movable object, is used to guide the braking assembly to move up and down along the support direction.

5. The braking system according to claim 4, characterized in that, The braking assembly includes: The lifting component can move up and down along the guide, the lifting component is hinged to the third transmission rod, and a receiving cavity with a bottom opening is formed inside the lifting component; A first elastic element is disposed in the receiving cavity; The support member is inserted into the receiving cavity through the bottom opening, and the insertion depth into the receiving cavity can be adjusted according to the elastic deformation of the first elastic member.

6. The braking system according to claim 5, characterized in that, The braking assembly also includes: A brake disc is located at the bottom of the support member.

7. The braking system according to claim 1, characterized in that, Also includes: The second elastic element has one end connected to the swing end of the first transmission rod and the other end connected to the movable object. The second elastic element is configured as follows: When the first transmission rod swings away from the brake assembly from the direction parallel to the support, the force exerted by the second elastic element on the first transmission rod causes the first transmission rod to maintain the tendency to swing away from the brake assembly. When the first transmission rod swings from parallel to the support direction toward the side closer to the braking assembly, the force exerted by the second elastic element on the first transmission rod causes the first transmission rod to maintain the tendency to swing toward the side closer to the braking assembly.

8. The braking system according to claim 1, characterized in that, One of the braking systems includes two sets of correspondingly arranged transmission components and braking components.

9. The braking system according to claim 1, characterized in that, There are two brake pedals, which are respectively installed at both ends of the brake shaft.

10. A C-arm machine, characterized in that, The bottom of the C-arm machine is equipped with a braking system as described in any one of claims 1-9.

Images