Medical non-magnetic trundle brake structure and transportation equipment

Abstract

The utility model provides a medical non-magnetic trundle brake structure and a transportation device. The medical non-magnetic trundle brake structure comprises a frame body, the clamping and fixing mechanism comprises a fixed brake assembly and a movable brake assembly, and a brake disc of the vehicle body is located between the fixed brake assembly and the movable brake assembly; the adjusting mechanism comprises a cam, at least two guide columns, a reset piece and a pull rod, the two ends of each guide column make contact with the dynamic brake assembly and the cam respectively, the cam rotates around the center of the cam, the adjusting mechanism comprises a body and at least two protruding parts, the pull rod and the cam rotate synchronously, and the two ends of the reset piece are connected with the pull rod and the vehicle body chassis respectively. Compared with a conventional foot-operated brake, a more effective braking effect can be achieved under the smaller acting force, and therefore the fault rate can be greatly reduced. Compared with a hydraulic brake system, the stability of the operation process can be improved, meanwhile, the non-magnetic design of the hydraulic brake system can also enable the hydraulic brake system to be widely applied to the environment sensitive to the magnetic field, and therefore the use flexibility of the hydraulic brake system is improved, and the application range of the hydraulic brake system is also widened.

Description

Technical Field

[0001] The utility model relates to the technical field of transportation equipment, in particular to a medical non-magnetic caster brake structure and transportation equipment. Background Art

[0002] In today's medical transport vehicle landscape, the performance and reliability of the brake system are crucial to ensuring the safety of patients and medical equipment. Currently, most medical transport vehicles utilize traditional foot-operated brakes and hydraulic brake systems. However, both systems have significant drawbacks in practical applications.

[0003] Foot-operated brake systems are widely used due to their simple mechanical structure and low cost, but their high failure rate poses a risk to the safe operation of medical transport vehicles. Frequent maintenance and repairs not only increase operating costs but may also fail to provide timely and reliable braking in emergency situations.

[0004] On the other hand, while hydraulic brake systems offer superior stability and braking effectiveness compared to foot-operated brakes, their complex structural design leads to oil leakage, which not only affects braking performance but also potentially pollutes the environment. Furthermore, the difficulty in achieving a completely non-magnetic design for hydraulic brake systems limits their application in medical MRI applications. This is particularly true in magnetic field-sensitive environments such as magnetic resonance imaging (MRI), making the use of traditional hydraulic brake systems virtually impossible. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is to overcome the problems of high failure rate and limited scope of application of the brake system in the prior art, and to provide a medical non-magnetic caster brake structure and transportation equipment.

[0006] In order to solve the above technical problems, the utility model provides a medical non-magnetic caster brake structure, which includes: a frame; a clamping mechanism, the clamping mechanism includes a fixed brake assembly and a dynamic brake assembly, the fixed brake assembly and the dynamic brake assembly are respectively connected to the frame, and the brake disc of the vehicle body is located between the fixed brake assembly and the dynamic brake assembly, wherein the dynamic brake assembly is relatively close to / far away from the fixed brake assembly to clamp / release the brake disc; an adjusting mechanism, the adjusting mechanism includes a cam, at least two guide columns, a reset member and a pull rod, one end of at least two of the guide columns is respectively connected to the dynamic brake assembly, and the other end abuts the cam, and the cam rotates around its center, and includes a main body and at least two protrusions, at least two of the protrusions are arranged on the side of the main body facing the guide column, the pull rod is connected to the cam and rotates synchronously with the cam, and the two ends of the reset member are respectively connected to the pull rod and the vehicle chassis.

[0007] In one embodiment of the present invention, the fixed brake assembly includes a fixed brake pad and a fixing seat, the fixing seat is fixedly connected to the frame, and the fixed brake pad is connected to a side of the fixing seat facing the dynamic brake assembly.

[0008] In one embodiment of the present invention, the dynamic brake assembly includes a dynamic brake pad and a sliding seat, the sliding seat is slidably connected to the frame, the dynamic brake pad is connected to a side of the sliding seat facing the fixed brake assembly, and moves synchronously with the sliding seat.

[0009] In one embodiment of the present invention, the frame includes two mounting plates and connecting bolts, the fixed brake assembly and the dynamic brake assembly are respectively connected to the two mounting plates and are located between the two mounting plates, and the connecting bolts are passed through and connect the two mounting plates, the fixed seat and the sliding seat.

[0010] In one embodiment of the present invention, the frame further includes a gap plate, which is sleeved on the connecting bolts and located between the fixing seat and the sliding seat.

[0011] In one embodiment of the present invention, the frame further includes a nut and a fixing sleeve, the fixing sleeve is interference-fitted between the mounting plate and the connecting bolt, and the nut is threadably engaged with the connecting bolt and abuts against the fixing sleeve.

[0012] In one embodiment of the present invention, the cam further includes two guiding bevels, which extend obliquely from the main body toward the two protrusions respectively and form a centrally symmetrical structure around the center of the cam. The guide column moves between the main body and the protrusions through the guiding bevels.

[0013] In one embodiment of the present invention, the adjustment mechanism further includes a connecting member, which is arranged to connect the pull rod, the cam and the dynamic brake assembly.

[0014] In one embodiment of the present invention, a brake line is connected to the pull rod, one end of the pull rod is connected to the cam, and the other end is connected to the brake line.

[0015] The utility model also provides a transport device, which includes the above-mentioned medical non-magnetic caster brake structure.

[0016] The above technical solution of the utility model has the following advantages compared with the prior art:

[0017] The medical non-magnetic caster brake structure and transportation equipment described in the present invention drives the clamping mechanism to squeeze the brake disc of the vehicle body through the adjustment mechanism to achieve the purpose of parking. During this process, the pushing action of the pull rod on the cam can achieve the pushing drive of the guide column, thereby achieving the movement of the dynamic brake assembly. Compared with conventional foot-operated brakes, the present application can achieve a more effective braking effect with a smaller force, thereby significantly reducing the failure rate and providing new ideas for mechanical brake systems. Compared with hydraulic brake systems, the present application can improve the stability of the operation process. At the same time, its non-magnetic design can also make it widely used in environments sensitive to magnetic fields, thereby improving its flexibility of use and increasing its scope of application. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to make the content of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the medical non-magnetic caster brake structure in the preferred embodiment of the present invention;

[0020] Figure 2 yes Figure 1 The top view of the brake structure of the medical non-magnetic caster shown;

[0021] Figure 3 yes Figure 2 Schematic diagram of the slope structure at AA in the middle;

[0022] Figure 4 yes Figure 1 The diagram shows the structure of the pull rod and cam in the brake structure of the medical non-magnetic caster.

[0023] Explanation of the reference numerals in the specification: 100, frame; 110, mounting plate; 120, connecting bolt; 130, gap plate; 140, nut; 150, fixing sleeve; 200, clamping mechanism; 210, fixed brake assembly; 211, fixed brake pad; 212, fixing seat; 220, dynamic brake assembly; 221, dynamic brake pad; 222, sliding seat; 300, adjusting mechanism; 310, guide column; 320, cam; 321, main body; 322, protrusion; 323, guide slope; 330, pull rod; 331, brake line; 340, reset member; 350, connecting member. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it. However, the embodiments are not intended to limit the present invention.

[0025] Example 1

[0026] See also Figure 1 As shown, this embodiment provides a medical non-magnetic caster brake structure, which includes: a frame 100; a clamping mechanism 200, the clamping mechanism 200 includes a fixed brake assembly 210 and a dynamic brake assembly 220, the fixed brake assembly 210 and the dynamic brake assembly 220 are respectively connected to the frame 100, and the brake disc of the vehicle body is located between the fixed brake assembly 210 and the dynamic brake assembly 220, wherein the dynamic brake assembly 220 is relatively close to / away from the fixed brake assembly 210 to clamp / release the brake disc; an adjusting mechanism 300, the adjusting mechanism 300 includes a cam 320 , at least two guide columns 310, a reset member 340 and a pull rod 330, one end of at least two of the guide columns 310 are respectively connected to the dynamic brake assembly 220, and the other end abuts against the cam 320, the cam 320 rotates around its center, and includes a main body 321 and at least two protrusions 322, at least two of the protrusions 322 are arranged on the side of the main body 321 facing the guide column 310, the pull rod 330 is connected to the cam 320, and rotates synchronously with the cam 320, and the two ends of the reset member 340 are respectively connected to the pull rod 330 and the vehicle chassis.

[0027] The medical non-magnetic caster brake structure described in this embodiment drives the clamping mechanism 200 to squeeze the brake disc of the vehicle body through the adjustment mechanism 300 to achieve the purpose of parking. During this process, the pushing action of the pull rod 330 on the cam 320 can achieve the pushing drive of the guide column 310, thereby achieving the movement of the dynamic brake assembly 220. Compared with conventional foot-operated brakes, the present application can achieve a more effective braking effect with a smaller force, thereby significantly reducing the failure rate and providing new ideas for mechanical brake systems. Compared with hydraulic brake systems, the present application can improve the stability of the operation process. At the same time, its non-magnetic design can also make it widely used in environments sensitive to magnetic fields, thereby improving its flexibility of use and increasing its scope of application.

[0028] See also Figure 1 As shown, this medical non-magnetic caster brake structure is installed on the chassis of a medical nuclear magnetic resonance transport vehicle, which is used to transport devices in the field of nuclear magnetic resonance imaging. Furthermore, the clamping mechanism 200 in this embodiment is used to squeeze and brake the brake disc of the vehicle body. The brake disc is installed between the fixed brake assembly 210 and the dynamic brake assembly 220. Specifically, the dynamic brake assembly 220 gradually approaches the fixed brake assembly 210 to squeeze the brake disc, so that the vehicle body can be in a braking state, or the dynamic brake assembly 220 gradually moves away from the fixed brake assembly 210 to release the brake disc, so that the vehicle body can be in a movable state.

[0029] See also Figure 2and Figure 3 As shown, the fixed brake assembly 210 in this embodiment includes a fixed brake pad 211 and a fixed seat 212. The fixed seat 212 is fixedly connected to the frame 100. The fixed brake pad 211 is connected to the side of the fixed seat 212 facing the dynamic brake assembly 220. Correspondingly, the dynamic brake assembly 220 includes a dynamic brake pad 221 and a sliding seat 222. The sliding seat 222 is slidably connected to the frame 100. The dynamic brake pad 221 is connected to the side of the sliding seat 222 facing the fixed brake assembly 210 and moves synchronously with the sliding seat 222. Furthermore, the fixed seat 212 and the sliding seat 222 in this embodiment are used to provide mounting platforms for the fixed brake pad 211 and the dynamic brake pad 221, respectively, to improve the overall stability of the clamping mechanism 200. At the same time, it can also ensure the actual installation position, angle and movement direction of the fixed brake pad 211 and the dynamic brake pad 221, thereby increasing the contact area between them and the brake disc to achieve optimal braking effect.

[0030] In this embodiment, the frame 100 is mounted on the vehicle chassis, providing a mounting platform for the clamping mechanism 200. Furthermore, the frame 100 includes two mounting plates 110 and connecting bolts 120. The fixed brake assembly 210 and the dynamic brake assembly 220 are respectively connected to the two mounting plates 110 and positioned between the two mounting plates 110. The connecting bolts 120 penetrate and connect the two mounting plates 110, the fixed seat 212, and the sliding seat 222. Based on the above structure, the frame 100 of this application can be assembled through a detachable connection, thereby facilitating disassembly, assembly, and maintenance of the structure.

[0031] Specifically, the frame 100 also includes a gap plate 130, which is mounted on the connecting bolt 120 and located between the fixed seat 212 and the sliding seat 222. The gap plate 130 is used to prevent excessive compression and damage to the brake disc during movement of the fixed brake assembly 210 and the dynamic brake assembly 220. Furthermore, the frame 100 also includes a nut 140 and a fixing sleeve 150. The fixing sleeve 150 is inserted through an interference fit between the mounting plate 110 and the connecting bolt 120. The nut 140 is threadedly engaged with the connecting bolt 120 and abuts against the fixing sleeve 150, thereby improving the overall connection strength and service life of the structure.

[0032] See also Figure 3 and Figure 4As shown, the adjustment mechanism 300 in this embodiment is used to provide driving force for the dynamic brake assembly 220. The operator drives the cam 320 by adjusting the pull rod 330. Specifically, the pull rod 330 in this embodiment is preferably a runway-shaped sheet element, one end of which is connected to the center of the cam 320 along its length, and the other end is connected to a brake cable 331. In actual use, the operator can directly drive the pull rod 330 or indirectly drive the cam 320 by pulling the brake cable 331. In this embodiment, a reset member 340 and the brake cable 331 are respectively connected to the ends of the pull rod 330. The reset member 340 is used to maintain the dynamic brake pad 221 in a position away from the brake pad 221 when the operator is not applying force, thereby ensuring normal movement of the vehicle body. Specifically, the reset member 340 in this embodiment is preferably a tension spring, which is always in a stretched state under normal conditions.

[0033] Furthermore, the adjustment mechanism 300 further includes a connector 350, which is arranged to connect the pull rod 330, the cam 320, and the dynamic brake assembly 220. The connector 350 in this embodiment is preferably a guide bolt, which is used to connect the fixed cam 320 and the guide post 310. Specifically, this embodiment includes two guide posts 310, which are symmetrically arranged on both sides of the connector 350. Each guide post 310 is provided with a limit spring. On the one hand, the limit spring is used to ensure the extension direction of the guide post 310. On the other hand, the limit spring is always in a compressed state to ensure that the guide post 310 and the cam 320 are always in a mutual abutment state.

[0034] See also Figure 4 As shown, the cam 320 in this embodiment includes two protrusions 322 and two guide slopes 323. The two guide slopes 323 extend obliquely from the body 321 toward the two protrusions 322 and are centrally symmetrical about the center of the cam 320. The guide posts 310 move between the body 321 and the protrusions 322 via the guide slopes 323. When braking is required, the operator rotates the cam 320 using the pull rod 330, causing the corresponding guide post 310 to move along the guide slope 323 toward the corresponding protrusion 322, thereby converting the rotational driving force into a linear driving force, thereby achieving a pushing effect on the dynamic brake assembly 220. Conversely, when the vehicle brake state needs to be released, the force applied to the pull rod 330 is simply released, and the pull rod 330 will drive the cam 320 to rotate in the opposite direction and reset, thereby moving the corresponding guide post 310 away from the protrusion 322, thereby releasing the vehicle brake disc.

[0035] Example 2

[0036] This embodiment provides a transportation device, which includes the above-mentioned medical non-magnetic caster brake structure.

[0037] In summary, the medical non-magnetic caster brake structure and transportation equipment described in the present invention drives the clamping mechanism 200 to squeeze the brake disc of the vehicle body through the adjustment mechanism 300 to achieve the purpose of parking. In this process, the pushing action of the pull rod 330 on the cam 320 can achieve the pushing drive of the guide column 310, thereby achieving the movement of the dynamic brake assembly 220. Compared with conventional foot-operated brakes, the present application can achieve a more effective braking effect with a smaller force, thereby significantly reducing the failure rate and providing new ideas for mechanical brake systems. Compared with hydraulic brake systems, the present application can improve the stability of the operation process. At the same time, its non-magnetic design can also make it widely used in environments sensitive to magnetic fields, thereby improving its flexibility of use and increasing its scope of application.

[0038] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A medical non-magnetic caster brake structure, characterized by: include: frame; a clamping mechanism, the clamping mechanism comprising a fixed brake assembly and a dynamic brake assembly, the fixed brake assembly and the dynamic brake assembly being respectively connected to the frame, the brake disc of the vehicle body being located between the fixed brake assembly and the dynamic brake assembly, wherein the dynamic brake assembly is relatively close to / away from the fixed brake assembly to clamp / release the brake disc; An adjusting mechanism comprises a cam, at least two guide posts, a reset member and a pull rod, wherein one end of at least two guide posts is respectively connected to the dynamic brake assembly, and the other end abuts against the cam, and the cam rotates around its center. The adjusting mechanism comprises a main body and at least two protrusions, and at least two protrusions are arranged on the side of the main body facing the guide post. The pull rod is connected to the cam and rotates synchronously with the cam. The two ends of the reset member are respectively connected to the pull rod and the vehicle chassis.

2. The medical non-magnetic caster brake structure according to claim 1, characterized in that: The fixed brake assembly includes a fixed brake pad and a fixing seat, the fixing seat is fixedly connected to the frame, and the fixed brake pad is connected to a side of the fixing seat facing the dynamic brake assembly.

3. The medical non-magnetic caster brake structure according to claim 2, characterized in that: The dynamic brake assembly includes a dynamic brake pad and a sliding seat. The sliding seat is slidably connected to the frame. The dynamic brake pad is connected to a side of the sliding seat facing the fixed brake assembly and moves synchronously with the sliding seat.

4. The medical non-magnetic caster brake structure according to claim 3, characterized in that: The frame includes two mounting plates and connecting bolts. The fixed brake assembly and the dynamic brake assembly are respectively connected to the two mounting plates and are located between the two mounting plates. The connecting bolts penetrate and connect the two mounting plates, the fixed seat and the sliding seat.

5. The medical non-magnetic caster brake structure according to claim 4, characterized in that: The frame body further includes a gap plate, which is sleeved on the connecting bolts and located between the fixing seat and the sliding seat.

6. The medical non-magnetic caster brake structure according to claim 4, characterized in that: The frame further includes a nut and a fixing sleeve. The fixing sleeve is interference-connected between the mounting plate and the connecting bolt. The nut is threadably matched with the connecting bolt and abuts against the fixing sleeve.

7. The medical non-magnetic caster brake structure according to claim 1, characterized in that: The cam further includes two guiding inclined surfaces, which extend obliquely from the body toward the two protrusions respectively and are centrally symmetrical around the center of the cam. The guide column moves between the body and the protrusions via the guiding inclined surfaces.

8. The medical non-magnetic caster brake structure according to claim 1, characterized in that: The adjustment mechanism further includes a connecting piece, which is arranged to connect the pull rod, the cam and the dynamic brake assembly.

9. The medical non-magnetic caster brake structure according to claim 1, characterized in that: The pull rod is connected to a brake line, one end of the pull rod is connected to the cam, and the other end is connected to the brake line.

10. A transport device, characterized in that: The invention comprises the medical non-magnetic caster brake structure as described in any one of claims 1 to 9.

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