Brake unlocking device and movable X-ray photography support comprising same

Abstract

The invention discloses a brake unlocking device and a movable X-ray photography support comprising the same, and belongs to the technical field of medical instruments.The brake unlocking device comprises a folding frame, a mechanical arm is installed on the folding frame, X-ray photography equipment is installed at the other end of the mechanical arm, and the inner side of the folding frame is fixedly sleeved with a brake assembly A; and a wheel shaft of the brake assembly A is communicated with a sleeve. According to the invention, when the anti-skid cover is in contact with the ground through the anti-skid pad, the overall stability of the bracket can be improved, and sideslip is avoided; ratchets of the movable ratchet wheel are switched upwards back and forth in the step face of the resisting part of the ratchet wheel seat body and the vertical sliding groove, so that the braking effect of the rear wheel can be rapidly relieved, meanwhile, the anti-skid cover can be rapidly separated from the ground, when the braking assembly A and the anti-skid assembly are unlocked, only a pedal needs to be treaded downwards, operation is very convenient and rapid, and the practicability is high. The labor is saved, and people do not need to worry about scratching or damaging the shoes.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a brake unlocking device and a mobile X-ray photography stand containing the device. Background Art

[0002] The rotating arm adjustment device for mobile X-ray photography stands is a device widely used in medical imaging. Its main function is to provide stable support and flexible angle adjustment to enable high-quality X-ray imaging of patients. In modern medicine, X-ray examination is an important diagnostic tool and is widely used in the examination and diagnosis of various diseases.

[0003] Mobile X-ray photography stands have become an indispensable auxiliary tool for X-ray photography equipment during use. Mobile X-ray photography stands on the market generally use a pedal structure to brake. When braking is needed, the brake pedal is stepped on by the foot, and the brake pedal rotates to drive the brake pin to lock the wheel. When unlocking is needed, the brake pedal is lifted up with the instep, and the brake pedal rotates in the opposite direction to achieve brake unlocking. However, the structure that relies on the instep to lift the brake pedal upward to drive the brake pedal to rotate and unlock is laborious and inconvenient to operate. Long-term operation will also scratch and damage the shoes.

[0004] Based on this, the present invention designs a brake unlocking device and a mobile X-ray photography stand containing the device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the problem that the existing mobile X-ray imaging stand generally adopts a pedal-stepping structural mode to brake. When braking is needed, the brake pedal is stepped on by the foot, and the brake pedal rotates to drive the brake pin to lock the wheel. When unlocking is needed, the brake pedal is lifted up by the instep, and the brake pedal rotates in the opposite direction, thereby achieving brake unlocking. However, the structural mode of relying on the instep to lift the brake pedal upward to drive the brake pedal to rotate and unlock is laborious and inconvenient to operate, and long-term operation will also scratch and damage the shoes. Therefore, a brake unlocking device and a mobile X-ray imaging stand containing the device are proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: A brake unlocking device and a mobile X-ray photography stand containing the device, comprising a folding frame, a mechanical arm is installed on the folding frame, an X-ray photography device is installed on the other end of the mechanical arm, a brake assembly A is fixedly sleeved on the inner side of the folding frame, a sleeve is connected to the wheel axle of the brake assembly A, and a brake unlocking assembly is sleeved in the sleeve; An embedding groove is provided in the movable frame of the folding frame, an anti-skid component is embedded in the embedding groove, a sliding groove B is provided on the inner wall of the anti-skid cover of the anti-skid component, a rolling component is connected to the inside of the anti-skid cover through the sliding groove B, and a brake component B is sleeved on the fixed shaft of the rolling component.

[0007] As a further description of the above technical solution: The folding frame comprises a fixed frame and a spring hinge, the fixed frame is hinged with a movable frame through the spring hinge, a front wheel is installed at the bottom of the other end of the movable frame, and the bottom of the mechanical arm is installed on the fixed frame.

[0008] As a further description of the above technical solution: The brake assembly A includes a wheel axle fixedly sleeved on the inner side of a fixed frame, the end of the wheel axle is rotatably connected to the rear wheel, a transmission hole is opened on the wheel axle corresponding to the rear wheel, a transmission member is embedded in the wheel axle corresponding to the transmission hole, a brake disc A and a brake disc B connected to the rear wheel are sleeved on the wheel axle, and the brake disc A is connected to the transmission member.

[0009] As a further description of the above technical solution: The transmission member includes a transmission plate sleeved in the wheel axle, the protruding portion on the transmission plate passes through the transmission hole and is connected to the brake wheel A, the end face of the transmission plate is connected to a support spring A, the transmission plate is elastically supported and connected to the inner end face of the wheel axle through the support spring A, the other side of the transmission plate is connected to a transmission rod, the transmission rod is sleeved with a directional sleeve, the directional sleeve is clamped in the wheel axle, the other end of the transmission rod is rotatably connected to an umbrella shaft, and the other end of the umbrella shaft is rotatably connected to the brake unlocking assembly.

[0010] As a further description of the above technical solution: The brake unlocking assembly includes a ratchet seat, a movable ratchet and a static ratchet, the ratchet seat is clamped in the sleeve, the static ratchet has an opening at the bottom, and has a serrated ratchet at its open end, and a plurality of positioning protrusions are evenly distributed on the outer circumferential surface of the ratchet, the movable ratchet has an opening at the bottom, and has a movable ratchet that cooperates with the ratchet of the static ratchet at its open end, and the movable ratchet is provided with an extension section outwardly along the radial portion of the movable ratchet, the ratchet seat has an opening at the bottom, and a through hole is provided on its top end face for the static ratchet rod body to pass through, and a vertical slide groove composed of a plurality of resisting parts is provided on the inner wall, and the width of the vertical slide groove is just enough for the positioning protrusion of the static ratchet and the extension section of the movable ratchet to slide in The resisting portion of the ratchet seat body is provided with a step surface, the movable ratchet sleeve is placed in the inner cavity of the static ratchet, the static ratchet is placed in the ratchet seat body through the through hole of the ratchet seat body, the movable ratchet is embedded and inserted into a support shaft, the end of the support shaft abuts against the top wall of the inner cavity of the movable ratchet, the other end of the support shaft is sleeved with a support sleeve connected to the bottom wall of the inner cavity of the wheel shaft, a linkage ring is fixedly sleeved on the support shaft, a support spring B is connected under the linkage ring, the linkage ring is elastically supported and connected to the support sleeve through the support spring B, and the rotation of the movable ratchet is driven by pressing the static ratchet, so that the ratchet teeth of the movable ratchet switch back and forth in the step surface of the resisting portion of the ratchet seat body and the vertical slide groove; An adapter frame is connected to the circumferential surface of the linkage ring corresponding to the umbrella-shaped shaft, the other end of the umbrella-shaped shaft is rotatably connected to the inner side of the adapter frame, and a foot pedal is connected to the movable ratchet.

[0011] As a further description of the above technical solution: The anti-slip assembly includes a wedge-shaped block embedded in the embedding groove, the wedge-shaped block is provided with a slide groove A, a slider A connected to the inner wall of the embedding groove is slidably connected in the slide groove A, a support spring C is connected to the slider A, and the slider A is elastically supported and connected to the bottom wall of the inner cavity of the slide groove A through the support spring C; A wedge frame is slidably connected to the wedge block in the embedding groove, an orientation groove is provided at the end of the wedge frame, an orientation shaft is sleeved in the orientation groove, the end of the orientation shaft is connected to the inner end surface of the embedding groove, and the inclined surface of the wedge frame is slidably connected to the inclined surface of the wedge block; A cross bar is connected to the wedge block, an anti-skid cover is connected below the cross bar, and an anti-skid pad is connected below the anti-skid cover.

[0012] As a further description of the above technical solution: A linkage member is connected to the side of the wedge-shaped frame, and the linkage member includes a linkage frame connected to the wedge-shaped frame. A fixed pulley is rotatably connected to the inner side of the fixed frame corresponding to the linkage frame. A strip hole is opened on the wheel axle corresponding to the fixed pulley. A rope is connected to the linkage frame, and the other end of the rope passes around the fixed pulley and passes through the strip hole to be connected to the transmission rod.

[0013] As a further description of the above technical solution: The rolling assembly includes a slider B slidably connected in a slide groove B, the slider B is connected to a support spring D, the slider B is elastically supported and connected to the top wall of the inner cavity of the slide groove B through the support spring D, the slider B is connected to a fixed shaft, the fixed shaft is rotatably connected to a roller, and a plurality of damping holes are opened on the circumferential surface of the roller.

[0014] As a further description of the above technical solution: The brake assembly B includes a sleeve sleeved on a fixed shaft, a fixing rod is connected to the corresponding damping hole on the sleeve, a brake head is sleeved on the other end of the fixing rod, the other end of the brake head is sleeved in the damping hole, and a support spring E is also connected to the other end of the fixing rod. The fixing rod is elastically supported and connected to the end surface of the inner cavity of the brake head through the support spring E, and a counterweight sleeve is fixedly sleeved on the brake head.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: The pedal is stepped on again to press the static ratchet wheel to drive the rotation of the movable ratchet wheel, so that the ratchet teeth of the movable ratchet wheel switch upward back and forth in the step surface of the resisting portion of the ratchet seat body and the vertical slide groove, thereby quickly releasing the braking effect of the rear wheel and simultaneously making the anti-skid cover leave the ground quickly. When the brake assembly A and the anti-skid assembly are unlocked, only the pedal needs to be stepped on downward, which is very convenient and quick to operate, very labor-saving, and there is no need to worry about scratching or damaging the shoes.

[0016] 2. In the present invention, the protruding brake head can increase the friction between the roller and the ground, thereby achieving an anti-skid effect to a certain extent. When the mobile X-ray photography stand moves at a high speed, the brake head re-immerses itself in the damping hole under the drive of the return elastic force of the support spring E, automatically releasing the braking effect on the roller, making it convenient for subsequent medical staff to continue to push the mobile X-ray photography stand. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a brake unlocking device and a mobile X-ray photography stand containing the device proposed by the present invention; Figure 2A schematic structural diagram of a brake unlocking device and a brake unlocking component in a mobile X-ray photography stand containing the device proposed by the present invention; Figure 3 A schematic diagram of the structure of a brake unlocking device and a disassembled brake assembly A in a mobile X-ray photography stand containing the device proposed by the present invention; Figure 4 A schematic diagram of the structure of a brake unlocking device and a transmission part in a mobile X-ray photography stand containing the device proposed by the present invention; Figure 5 A schematic structural diagram of a brake unlocking device and a rolling assembly in a mobile X-ray photography stand containing the device from another perspective proposed by the present invention; Figure 6 This is a schematic structural diagram of a brake unlocking device and a brake assembly B in a mobile X-ray photography stand containing the device, which is disassembled according to the present invention; Figure 7 A brake unlocking device and a mobile X-ray photography stand containing the device proposed by the present invention Figure 6 The enlarged structural diagram at A in the middle; Figure 8 The present invention provides a brake unlocking device and a schematic structural diagram of a disassembled anti-skid component in a mobile X-ray photography stand containing the device.

[0018] Legend: 1. Folding frame; 101. Fixed frame; 102. Movable frame; 103. Spring hinge; 104. Front wheel; 2. Brake assembly A; 201. Wheel axle; 202. Rear wheel; 203. Transmission hole; 204. Transmission member; 2041. Transmission disc; 2042. Support spring A; 2043. Transmission rod; 2044. Directional sleeve; 2045. Umbrella shaft; 205. Brake disc A; 206. Brake disc B; 3. Sleeve; 4. Brake unlocking assembly; 401. Ratchet seat; 402. Moving ratchet; 403. Support shaft; 404. Linkage ring; 405. Support spring B; 406. Adapter frame; 407. Static ratchet; 408. Foot pedal; 409. Support Support sleeve; 5. Embossed groove; 6. Anti-skid assembly; 601. Wedge block; 602. Slider A; 603. Support spring C; 604. Wedge frame; 605. Orienting shaft; 606. Linkage; 6061. Linkage frame; 6062. Rope; 6063. Fixed pulley; 607. Anti-skid cover; 608. Anti-skid pad; 609. Crossbar; 7. Rolling assembly; 701. Slider B; 702. Support spring D; 703. Fixed shaft; 704. Roller; 705. Damping hole; 8. Brake assembly B; 801. Bushing; 802. Fixed rod; 803. Brake head; 804. Support spring E; 805. Counterweight sleeve; 9. Robotic arm; 10. X-ray equipment. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please see attached Figure 1 -Attached Figure 8 The present invention provides a technical solution: a brake unlocking device and a mobile X-ray photography stand containing the device, comprising a folding frame 1, a mechanical arm 9 is installed on the folding frame 1, an X-ray photography device 10 is installed on the other end of the mechanical arm 9, a brake assembly A2 is fixedly sleeved on the inner side of the folding frame 1, a sleeve 3 is connected to the wheel axle 201 of the brake assembly A2, and a brake unlocking assembly 4 is sleeved in the sleeve 3; An embedding groove 5 is provided in the movable frame 102 of the folding frame 1, and an anti-skid component 6 is embedded in the embedding groove 5. A sliding groove B is provided on the inner wall of the anti-skid cover 607 of the anti-skid component 6. A rolling component 7 is connected to the inside of the anti-skid cover 607 through the sliding groove B, and a brake component B8 is sleeved on the fixed shaft 703 of the rolling component 7.

[0021] Specifically, the folding frame 1 includes a fixed frame 101 and a spring hinge 103, the fixed frame 101 is hinged with a movable frame 102 through the spring hinge 103, a front wheel 104 is installed at the bottom of the other end of the movable frame 102, the bottom of the mechanical arm 9 is installed on the fixed frame 101, and the brake assembly A2 includes a wheel axle 201 fixedly sleeved on the inner side of the fixed frame 101, the end of the wheel axle 201 is rotatably connected to the rear wheel 202, a transmission hole 203 is opened on the wheel axle 201 corresponding to the rear wheel 202, a transmission member 204 is embedded in the wheel axle 201 corresponding to the transmission hole 203, a brake disc A205 and a brake disc B206 connected to the rear wheel 202 are sleeved on the wheel axle 201, the brake disc A205 is connected to the transmission member 204, and the transmission member 204 includes The transmission disc 2041 is sleeved in the wheel shaft 201, and the protruding part on the transmission disc 2041 passes through the transmission hole 203 and is connected to the brake wheel A. The end face of the transmission disc 2041 is connected with a support spring A2042, and the transmission disc 2041 is elastically supported and connected to the inner end face of the wheel shaft 201 through the support spring A2042. The other side of the transmission disc 2041 is connected to a transmission rod 2043, and a directional sleeve 2044 is sleeved on the transmission rod 2043. The directional sleeve 2044 is clamped inside the wheel shaft 201. The other end of the transmission rod 2043 is rotatably connected to an umbrella shaft 2045, and the other end of the umbrella shaft 2045 is rotatably connected to the brake unlocking component 4. The brake unlocking component 4 includes a ratchet seat body 401, a movable ratchet 402 and a static ratchet 407. The ratchet base is clamped in the sleeve 3, the bottom of the static ratchet 407 is open, and a serrated ratchet is provided at its open end, and a number of positioning protrusions are evenly distributed on the outer circumferential surface of the ratchet. The bottom of the movable ratchet 402 is open, and a movable ratchet that cooperates with the ratchet of the static ratchet 407 is provided at its open end, and the movable ratchet is provided with an extension section outward along the radial portion of the movable ratchet 402. The bottom of the ratchet seat body 401 is open, and a through hole is provided on its top end face for the rod body of the static ratchet 407 to pass through, and a vertical slide groove composed of a number of resisting parts is provided on the inner wall, and the width of the vertical slide groove is just enough for the positioning protrusion of the static ratchet 407 and the extension section of the movable ratchet 402 to slide in, and the resisting part of the ratchet seat body 401 is provided with a step surface, and the movable ratchet 402 is sleeved on the static ratchet 4 07, the static ratchet 407 is placed in the ratchet seat body 401 through the through hole of the ratchet seat body 401, and the movable ratchet 402 is embedded and inserted with a support shaft 403, the end of the support shaft 403 abuts against the top wall of the inner cavity of the movable ratchet 402, and the other end of the support shaft 403 is sleeved with a support sleeve 409 connected to the bottom wall of the inner cavity of the wheel shaft 201, and a linkage ring 404 is fixedly sleeved on the support shaft 403, and a support spring B405 is connected under the linkage ring 404. The linkage ring 404 is elastically supported and connected with the support sleeve 409 through the support spring B405, and the rotation of the movable ratchet 402 is driven by pressing the static ratchet 407, so that the ratchet teeth of the movable ratchet 402 switch back and forth in the step surface and the vertical slide groove of the abutment part of the ratchet seat body 401; An adapter frame 406 is connected to the circumferential surface of the linkage ring 404 corresponding to the umbrella-shaped shaft 2045 , and the other end of the umbrella-shaped shaft 2045 is rotatably connected to the inner side of the adapter frame 406 . A foot pedal 408 is connected to the movable ratchet 402 .

[0022] The specific implementation method is: by stepping on the foot pedal 408 and pressing the static ratchet 407, the rotation of the movable ratchet 402 is driven, so that the ratchet teeth of the movable ratchet 402 switch downward back and forth in the step surface and the vertical slide groove of the resisting part of the ratchet seat body 401. During this process, the movable ratchet 402 pushes the support shaft 403 to retract into the support sleeve 409, and drives the linkage ring 404 to squeeze the support spring B405 to make it elastically deformed. In the process of the linkage ring 404 pressing down the support spring B405, it will also drive the end of the umbrella shaft 2045 to rotate inside and generate a lateral thrust on the umbrella shaft 2045. The other end of the umbrella shaft 2045 rotates around the end of the transmission rod 2043 and pushes the transmission shaft to slide in the directional sleeve 2044. The other end of the transmission shaft pushes the transmission disk 2041 to slide in the transmission hole 203 and squeezes the support spring A2042 to make it elastically deformed. The transmission rod 2043 pushes the transmission During the process of moving the disk 2041, a pulling force will be generated on the rope 6062. The other end of the rope 6062 passes around the fixed pulley 6063 to generate a pulling force on the linkage frame 6061. The linkage frame 6061 pulls the wedge frame 604 to slide in the embedding groove 5 toward the wedge seat. The wedge frame 604 will generate downward pressure on the wedge block 601. Under the action of the downward pressure, the wedge block 601 slides on the slider A602 through the slide groove A, and squeezes the support spring C603 to make it elastically deformed. During the process of the wedge block 601 sliding downward in the embedding groove 5, the cross bar 609 will be pushed to drive the anti-skid cover 607 to slide toward the ground. During the downward movement of the protective cover, the anti-skid cover 607 slides on the slider B701 through the slide groove B, and squeezes the support spring D702 to make it elastically deformed. The roller 704 gradually sinks into the anti-skid cover 607, and the anti-skid pad 608 can increase the friction between the anti-skid cover 607 and the ground.

[0023] Specifically, the anti-skid assembly 6 includes a wedge block 601 embedded in the embedding groove 5, a slide groove A is formed on the wedge block 601, a slider A602 connected to the inner wall of the embedding groove 5 is slidably connected in the slide groove A, a support spring C603 is connected to the slider A602, and the slider A602 is elastically supported and connected to the bottom wall of the inner cavity of the slide groove A through the support spring C603; A wedge frame 604 is slidably connected to the wedge block 601 in the embedded groove 5. An orientation groove is provided at the end of the wedge frame 604. An orientation shaft 605 is sleeved in the orientation groove. The end of the orientation shaft 605 is connected to the inner end surface of the embedded groove 5. The inclined surface of the wedge frame 604 is slidably connected to the inclined surface of the wedge block 601. The wedge block 601 is connected to a cross bar 609, an anti-skid cover 607 is connected to the cross bar 609, and an anti-skid pad 608 is connected to the anti-skid cover 607. A linkage member 606 is connected to the side of the wedge frame 604. The linkage member 606 includes a linkage frame 6061 connected to the wedge frame 604. A fixed pulley 6063 is rotatably connected to the inner side of the fixed frame 101 corresponding to the linkage frame 6061. A strip hole is opened on the wheel axle 201 corresponding to the fixed pulley 6063. A rope 6062 is connected to the linkage frame 6061. The rope The other end of 6062 passes around the fixed pulley 6063 and passes through the strip hole to be connected to the transmission rod 2043. The rolling component 7 includes a slider B701 slidably connected to the slide groove B. The slider B701 is connected to a support spring D702. The slider B701 is elastically supported and connected to the top wall of the inner cavity of the slide groove B through the support spring D702. The slider B701 is connected to a fixed shaft 703. The fixed shaft 703 is rotatably connected to a roller 704. A plurality of damping holes 705 are provided on the circumferential surface of the roller 704.

[0024] The specific implementation method is as follows: when the transmission rod 2043 pushes the transmission disk 2041, it will also generate tension on the rope 6062. The other end of the rope 6062 passes around the fixed pulley 6063 to generate tension on the linkage frame 6061. The linkage frame 6061 pulls the wedge frame 604 to slide in the embedding groove 5 toward the wedge seat. The wedge frame 604 will generate downward pressure on the wedge block 601. Under the action of the downward pressure, the wedge block 601 slides on the slider A602 through the slide groove A and squeezes the support spring C603 to make it elastically deformed. When the wedge block 601 slides downward in the embedding groove 5, it will push the cross bar 609 to drive the anti-skid cover 607 to slide toward the ground. When the protective cover descends, the anti-skid cover 607 slides on the slider B701 through the slide groove B and squeezes the support spring D702 to make it elastically deformed. The roller 704 gradually sinks into the anti-skid cover 607. The anti-skid pad 608 can increase the friction between the anti-skid cover 607 and the ground.

[0025] Specifically, the brake assembly B8 includes a sleeve 801 that is sleeved on the fixed shaft 703, and a fixed rod 802 is connected to the sleeve 801 corresponding to the damping hole 705. The other end of the fixed rod 802 is sleeved with a brake head 803, and the other end of the brake head 803 is sleeved in the damping hole 705. The other end of the fixed rod 802 is also connected to a support spring E804. The fixed rod 802 is elastically supported and connected to the end face of the inner cavity of the brake head 803 through the support spring E804, and a counterweight sleeve 805 is fixedly sleeved on the brake head 803.

[0026] The specific implementation method is as follows: when the roller 704 rolls rapidly on the ground, the shaft sleeve 801 will be driven to rotate rapidly. The rapid rotation of the shaft sleeve 801 will cause the brake head 803 and the counterweight sleeve 805 combination to perform centrifugal motion in the damping hole 705. The brake head 803 protrudes outward from the damping hole 705 and pulls the support spring E804 to perform extension motion. The protruding brake head 803 can increase the friction between the roller 704 and the ground.

[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A brake unlocking device and a mobile X-ray photography stand containing the same, comprising a folding stand (1), a mechanical arm (9) being mounted on the folding stand (1), and an X-ray photography device (10) being mounted on the other end of the mechanical arm (9), characterized in that: A brake assembly A (2) is fixedly sleeved on the inner side of the folding frame (1); a sleeve (3) is connected to the wheel axle (201) of the brake assembly A (2); and a brake unlocking assembly (4) is sleeved inside the sleeve (3); The movable frame (102) of the folding frame (1) is provided with an embedding groove (5), an anti-skid component (6) is embedded in the embedding groove (5), a sliding groove B is provided on the inner wall of the anti-skid cover (607) of the anti-skid component (6), a rolling component (7) is connected to the inside of the anti-skid cover (607) via the sliding groove B, and a brake component B (8) is sleeved on the fixed shaft (703) of the rolling component (7).

2. The brake unlocking device and the mobile X-ray photography stand containing the same according to claim 1, characterized in that: The folding frame (1) comprises a fixed frame (101) and a spring hinge (103); the fixed frame (101) is hingedly connected to a movable frame (102) via the spring hinge (103); a front wheel (104) is installed at the bottom of the other end of the movable frame (102); and the bottom of the mechanical arm (9) is installed on the fixed frame (101).

3. The brake unlocking device and the mobile X-ray photography stand containing the same according to claim 2, characterized in that: The brake assembly A (2) comprises a wheel axle (201) fixedly sleeved on the inner side of a fixing frame (101), the end of the wheel axle (201) being rotatably connected to a rear wheel (202), a transmission hole (203) being provided on the wheel axle (201) corresponding to the rear wheel (202), a transmission member (204) being embedded in the wheel axle (201) corresponding to the transmission hole (203), a brake disc A (205) and a brake disc B (206) connected to the rear wheel (202) being sleeved on the wheel axle (201), and the brake disc A (205) being connected to the transmission member (204).

4. The brake unlocking device and the mobile X-ray photography stand containing the same according to claim 3, characterized in that: The transmission member (204) comprises a transmission disc (2041) sleeved in the wheel axle (201); a protruding portion on the transmission disc (2041) passes through a transmission hole (203) and is connected to a brake wheel A; an end surface of the transmission disc (2041) is connected to a support spring A (2042); the transmission disc (2041) is elastically supported and connected to the inner end surface of the wheel axle (201) via the support spring A (2042); the other side of the transmission disc (2041) is connected to a transmission rod (2043); a directional sleeve (2044) is sleeved on the transmission rod (2043); the directional sleeve (2044) is clamped inside the wheel axle (201); the other end of the transmission rod (2043) is rotatably connected to an umbrella-shaped shaft (2045); and the other end of the umbrella-shaped shaft (2045) is rotatably connected to a brake unlocking assembly (4).

5. The brake unlocking device and the mobile X-ray photography stand containing the same according to claim 1, characterized in that: The brake unlocking assembly (4) comprises a ratchet base (401), a movable ratchet (402) and a stationary ratchet (407), wherein the ratchet base is clamped in the sleeve (3), the stationary ratchet (407) has an opening at the bottom and has sawtooth-shaped ratchet teeth at its open end, and a plurality of positioning protrusions are evenly distributed on the outer circumferential surface of the ratchet teeth, the movable ratchet (402) has an opening at the bottom and has movable ratchet teeth that cooperate with the ratchet teeth of the stationary ratchet (407) at its open end, and the movable ratchet teeth are arranged on the outer circumferential surface of the ratchet teeth. The ratchet teeth are provided with an extension section outwardly along the radial portion of the movable ratchet (402); the bottom of the ratchet seat (401) is open, and a through hole is provided on the top end surface thereof for the rod body of the stationary ratchet (407) to pass through; the inner wall is provided with a vertical slide groove formed by a plurality of stop parts, and the width of the vertical slide groove is just enough for the positioning protrusion of the stationary ratchet (407) and the extension section of the movable ratchet (402) to slide in; the stop part of the ratchet seat (401) is provided with a step surface, and the movable ratchet (407) is provided with a step surface. 2) is sleeved in the inner cavity of the static ratchet (407), the static ratchet (407) is sleeved in the ratchet seat (401) through the through hole of the ratchet seat (401), the movable ratchet (402) is embedded with a support shaft (403) in an inserted manner, the end of the support shaft (403) abuts against the top wall of the inner cavity of the movable ratchet (402), the other end of the support shaft (403) is sleeved with a support sleeve (409) connected to the bottom wall of the inner cavity of the wheel shaft (201), the support A linkage ring (404) is fixedly sleeved on the support shaft (403), and a support spring B (405) is connected below the linkage ring (404). The linkage ring (404) is elastically supported and connected to the support sleeve (409) via the support spring B (405). The rotation of the movable ratchet (402) is driven by pressing the static ratchet (407), so that the ratchet teeth of the movable ratchet (402) switch back and forth on the step surface of the resisting portion of the ratchet seat body (401) and in the vertical slide groove. An adapter frame (406) is connected to the circumferential surface of the linkage ring (404) corresponding to the umbrella-shaped shaft (2045); the other end of the umbrella-shaped shaft (2045) is rotatably connected to the inner side of the adapter frame (406); and a foot pedal (408) is connected to the movable ratchet wheel (402).

6. The brake unlocking device and the mobile X-ray photography stand containing the same according to claim 1, characterized in that: The anti-slip assembly (6) comprises a wedge-shaped block (601) embedded in the embedding groove (5), the wedge-shaped block (601) is provided with a slide groove A, a slider A (602) connected to the inner wall of the embedding groove (5) is slidably connected in the slide groove A, a support spring C (603) is connected to the slider A (602), and the slider A (602) is elastically supported and connected to the bottom wall of the inner cavity of the slide groove A through the support spring C (603); A wedge frame (604) is slidably connected to the wedge block (601) in the embedding groove (5), an orientation groove is formed at the end of the wedge frame (604), an orientation shaft (605) is sleeved in the orientation groove, the end of the orientation shaft (605) is connected to the inner end surface of the embedding groove (5), and the inclined surface of the wedge frame (604) is slidably connected to the inclined surface of the wedge block (601); The wedge-shaped block (601) is connected to a cross bar (609), an anti-slip cover (607) is connected below the cross bar (609), and an anti-slip pad (608) is connected below the anti-slip cover (607).

7. The brake unlocking device and the mobile X-ray photography stand containing the same according to claim 6, characterized in that: A linkage member (606) is connected to the side of the wedge-shaped frame (604), and the linkage member (606) comprises a linkage frame (6061) connected to the wedge-shaped frame (604). A fixed pulley (6063) is rotatably connected to the inner side of the fixed frame (101) corresponding to the linkage frame (6061). A strip hole is provided on the wheel shaft (201) corresponding to the fixed pulley (6063). A rope (6062) is connected to the linkage frame (6061), and the other end of the rope (6062) passes through the strip hole after passing around the fixed pulley (6063) and is connected to the transmission rod (2043).

8. The brake unlocking device and the mobile X-ray photography stand containing the same according to claim 1, characterized in that: The rolling assembly (7) comprises a slider B (701) slidably connected to a slide groove B, the slider B (701) being connected to a support spring D (702), the slider B (701) being elastically supported and connected to the top wall of the inner cavity of the slide groove B via the support spring D (702), the slider B (701) being connected to a fixed shaft (703), the fixed shaft (703) being rotatably connected to a roller (704), and a plurality of damping holes (705) being provided on a circumferential surface of the roller (704).

9. The brake unlocking device and the mobile X-ray photography stand containing the same according to claim 1, characterized in that: The brake assembly B (8) comprises a sleeve (801) sleeved on a fixed shaft (703); a fixed rod (802) is connected to the sleeve (801) corresponding to the damping hole (705); the other end of the fixed rod (802) is sleeved with a brake head (803); the other end of the brake head (803) is sleeved in the damping hole (705); the other end of the fixed rod (802) is also connected to a support spring E (804); the fixed rod (802) is elastically supported and connected to the end surface of the inner cavity of the brake head (803) through the support spring E (804); and a counterweight sleeve (805) is fixedly sleeved on the brake head (803).

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