WO2017106987A1

WO2017106987A1 - Braking and steering mechanism for use in mobile g-arm of x-ray imaging apparatus

Info

Publication number: WO2017106987A1
Application number: PCT/CN2015/000926
Authority: WO
Inventors: 曹流; 周峰; 田春雷; 沈威; 魏世宇
Original assignee: 北京东方惠尔图像技术有限公司
Priority date: 2015-12-23
Filing date: 2015-12-23
Publication date: 2017-06-29

Abstract

A braking and steering mechanism for use in a mobile G-arm of an X-ray imaging apparatus. A frame (1) thereof has a lower portion rotatably fitted, via a support (3), with a guide wheel (4) on both ends, the support (3) is rotatably fitted on the frame (1), and the guide wheels (4) are rotatably fitted on the support (3). A brake lever (5) is slidably disposed above the guide wheel (4) and on the frame (1), and is sleeved with a reset compression spring (6). The frame (1) is rotatably fitted with a transmission shaft (7), both ends of the transmission shaft (7) are provided with brake cams (8) respectively pressing against upper ends of corresponding brake levers (5), and the transmission shaft (7) is unrotatably provided with a pedal. Inclination of the pedal drives the brake cams (8) to rotate, such that the brake cams (8) overcome the force of the reset compression springs (6) and press the brake levers (5) against the guide wheels (4). The brake cams (8) at the two ends of the transmission shaft (7) of the braking and steering mechanism push and press the corresponding brake levers (5) downward along with the inclination of the pedal, such that the two brake levers (5) simultaneously press tightly against the two guide wheels (4). When the pedal is released, the brake levers (5) move upward under the action of the reset compression springs (6) and release the guide wheels (4) to stop braking. In this way, the present invention greatly saves time for an operator.

Description

Brake steering mechanism applied to mobile G-arm X-ray equipment

Technical field

The invention relates to a brake steering mechanism applied to a mobile G-arm X-ray device, belonging to the field of medical equipment.

Background technique

The G-arm system has two mutually perpendicular image chains that can be imaged at the same time. The significance of the birth is that it saves the surgeon's time. The G-arm system has a frame, and the lower part of the frame is provided with a guide wheel, and the G-arm system can be conveniently moved by the guide wheel. In actual use, the G-arm system needs to be braked and steered. The guide wheel of the existing traditional G-arm system is a universal wheel, the G-arm system moves and turns through the universal wheel, and the brake is passed through the universal wheel. The brake pedals individually control the brakes of the universal wheel, so that it is necessary to step on the brake pedals on each of the universal wheels to brake the whole machine, which is cumbersome and wastes time. In addition, when the equipment needs to be In the case of braking on the slope, one person must hold the machine and one person should perform the braking operation. It is very inconvenient to use a single universal wheel to release the brakes. At the same time, three universal wheels are used to control the steering of the G-arm device, and the translational motion in any direction of the whole machine cannot be realized, which is inconvenient for the turning motion of the whole machine.

U.S. Patent Specification No. 3,549,885 discloses a mobile G-arm X-ray device brake steering system that solves the problem of the conventional G-arm system to some extent. The mobile G-arm X-ray device The brake steering system forms a brake system through brake bolts and casters, and controls the tightening and loosening of the casters by adjusting the tightening of the bolts. There is no need to brake the guide wheels one by one, but the tightening of the bolts needs to be operated by means of tools. In addition, the equipment operator must bend or squat to operate the brake function, which is still inconvenient, and at the same time, when the equipment needs to brake on the slope. In this case, there must still be one person holding the machine and one person performing the braking operation. The steering of the mobile G-arm X-ray equipment brake steering system is realized by the steering system composed of the steering wheel, the transmission chain and the steering wheel. During the operation, the rotation of the steering wheel is required to drive the movement of the transmission chain, and the control is guided. The rotation of the wheel enables the steering function. However, the angle of rotation of the steering wheel and the angle of the steering wheel cannot Consistently, the operator must bend over or kneel down to see the steering angle of the steering wheel. The steering wheel cannot be accurately turned during the rotation of the steering wheel, and the operator cannot apply the thrust to the correct angle in the shortest time. When the steering wheel is turned to a certain angle, due to the inability to lock, the device will cause the steering wheel to rotate to other angles when moving in translation along the angle, making the steering angle more inaccurate. The above defects cause the equipment operator to be extremely inconvenient in braking and steering the equipment, which is a great waste of time.

Summary of the invention

It is an object of the present invention to provide a brake steering mechanism for use on a mobile G-arm X-ray apparatus to solve the problem that the brake operation of the brake steering mechanism in the prior art is very inconvenient and wastes the operator's time.

In order to achieve the above object, the present invention adopts the following technical solution: a brake steering mechanism applied to a mobile G-arm X-ray device, comprising a frame, and both ends of the lower part of the frame are assembled with a guide wheel by rotation of the bracket, The bracket is rotatably mounted on the frame, and the guide wheel is rotatably mounted on the bracket. The rotation center line of the guide wheel is perpendicular to the rotation center line of the bracket, and the brake lever is slidably disposed above the guide wheel on the frame, and the brake lever is sleeved The upper end is pressed against the brake rod and the lower end is pressed against the reset pressure spring on the frame, and the transmission shaft is rotatably mounted on the frame. The both ends of the transmission shaft are set to stop and are respectively pressed with the upper end of the corresponding brake lever. The brake cam is provided with a foot pedal on the drive shaft. When the pedal is tilted, the brake cam is driven by the drive shaft, and the brake cam overcomes the pressure of the reset spring to press the brake lever on the guide wheel.

The brake cam is a wheel body having three planes on the outer peripheral surface, and the three planes are respectively a first plane, a second plane and a third plane, and the first plane is at the level of the pedal and the brake lever The end faces cooperate, and the second plane and the third plane are on both sides of the first plane and intersect the first plane.

The brake cam is pressed by the pressing block disposed at the upper end of the brake lever and the brake lever, and the pressing block is fixedly disposed on the top end of the brake rod through the through hole thereon, and the brake cam is pressed against the end surface of the pressing block.

The pressing block is sleeved with a limiting block, and the limiting block is fixedly sleeved on the pressing block, and the end surface of the limiting block is surrounded by a limiting edge on the outer side of the brake cam.

The upper part of the rack has two handles bent backwards, and one of the handles is provided with a rotation stop a guiding rod extending downwardly and rotatably assembled with the frame, one end of the guiding rod is assembled with the handle, and the other end is fixedly equipped with a driving wheel, and the two brackets are respectively fixed and assembled with a first driven wheel and a second driven wheel, first The driven wheel and the second driven wheel are coupled to the driving wheel, and the steering of the first driven wheel and the second driven wheel are the same.

The driving wheel, the first driven wheel and the second driven wheel are all sprocket wheels, and the first driven wheel and the second driven wheel are drivingly connected with the driving wheel through a transmission chain, the driving wheel, the first driven wheel and the second The driven wheel is sequentially meshed with the transmission chain on the inner side of the transmission chain.

a first tensioning wheel and a second tensioning wheel are respectively disposed on the two sides of the driving wheel, and the first tensioning wheel and the second tensioning wheel are disposed outside the transmission chain and are driven Chain meshing.

The driving wheel, the first driven wheel and the second driven wheel are all pulleys, and the first driven wheel and the second driven wheel are drivingly connected to the driving wheel through a timing belt.

A first tensioning wheel and a second tensioning wheel are respectively disposed on the two sides of the driving wheel on the two sides of the driving wheel, and the first tensioning wheel and the second tensioning wheel are disposed outside the synchronous belt.

a lower locking block is fixed on the guiding rod below the joint of the handle and the frame, and the upper locking member is slidably disposed above the lower locking block, and the upper and lower locking blocks are opposite. The end surface is provided with locking teeth which are clamped to each other after the upper locking block slides down, and a locking spring is pressed between the upper locking block and the frame to press the upper locking block downwardly, and the frame passes through the frame. The brake camshaft is rotated and provided with a locking knob. One end of the brake camshaft is fixed with the locking knob, and the other end is fixed with a locking brake cam that cooperates with the locking spring to drive the upper locking block to move up and down.

The frame is provided with a locking knob on the joint of the handle and the frame through the rotating shaft. The locking knob is fixedly mounted on the end of one end of the rotating shaft, and the other end of the rotating shaft is provided with a thread on the guiding rod. The movable sleeve is provided with a U-shaped hoop fixed on the frame. The free end of the U-shaped hoop near the locking knob is provided with a through hole, and the free end of the U-shaped hoop is provided with a threaded hole, and the end of the rotating shaft is provided with a thread. The through hole corresponding to the free end is screwed into the threaded hole corresponding to the free end, and the outer peripheral surface of the rotating shaft is provided with a corresponding free end pressing fit with the U-shaped hoop so that the U-shaped hoop clamps the step surface of the guiding rod.

The brake cams at both ends of the transmission shaft of the present invention are pressed against the brake lever, stepping on the pedals, and pedals Tilting will drive the drive shaft to rotate. The two brake cams will push down the corresponding brake levers. The two brake levers will simultaneously press the two guide wheels to achieve the brake function. When the pedals are released, the brake levers will be released. Upward shifting under the force of the reset compression spring, releasing the guide wheel, releasing the brake, the operation is very convenient, and the operator's time is largely saved.

The handle of the present invention is provided with a guide rod extending downwardly and rotatably assembled with the frame. One end of the guide rod is assembled with the handle, and the other end is fixedly equipped with a driving wheel, and the two brackets are respectively fixed and assembled with the first slave The movable wheel and the second driven wheel, the first driven wheel and the second driven wheel are connected with the driving wheel, and the rotating handle can drive the two driven wheels to rotate through the driving wheel, so that the guiding wheel rotates to realize steering. The relationship between the rotation angle of the handle and the rotation angle of the guide wheel is determined, and the angle at which the guide wheel is rotated can be accurately known by the angle of the handle rotation, and the steering angle of the steering wheel does not need to be bent or squatted. The steering function is easy to use, providing greater convenience and flexibility.

The guiding rod of the present invention is provided with a mechanism for locking the guiding rod so that the guiding rod cannot be rotated at the joint of the handle and the frame, so that when the guiding wheel is turned, the locking angle can be locked at a fixed angle, and the device will be turned after the steering Accurately move along the desired route without turning to other angles.

DRAWINGS

1 is a schematic view showing the overall structure of a G-arm X-ray apparatus to which Embodiment 1 of the present invention is applied;

Figure 2 is a schematic structural view of Embodiment 1 of the present invention;

Figure 3 is a cross-sectional view showing a front view of Embodiment 1 of the present invention;

Figure 4 is a schematic view of the first embodiment of the present invention in a locked and released state;

Figure 5 is a schematic structural view of Embodiment 2 of the present invention;

Figure 6 is a front elevational view of Embodiment 2 of the present invention;

Figure 7 is a rear elevational view of Figure 6;

Figure 8 is a schematic structural view of Embodiment 3 of the present invention;

Figure 9 is a perspective view showing the mechanism of the mechanism for locking the guide rod of Figure 8;

Figure 10 is a plan view showing the mechanism of the mechanism for locking the guide bar of Figure 8;

Figure 11 is a perspective view showing the mechanism of the mechanism for locking the guide bar according to Embodiment 4 of the present invention;

Fig. 12 is a plan view showing the structure of a mechanism for locking a guide bar according to a fourth embodiment of the present invention.

detailed description

Embodiment 1 of a brake steering mechanism applied to a mobile G-arm X-ray device, and FIG. 1 is an assembly between a G-arm X-ray device when the brake steering mechanism is used on a G-arm X-ray device Diagram for assisting in explaining the application of the brake steering mechanism to the actual assembly method, where A is the brake steering mechanism. In FIG. 2 to FIG. 4, the main body of the frame 1 of the brake steering mechanism is an elongated plate, and two upwardly extending handle mounting rods 2 are integrally provided at both ends of the elongated plate, and the lower portions of the two ends of the frame 1 pass through The bracket 3 is provided with a guide wheel 4, and the bracket 3 is rotatably mounted on the frame 1. The guide wheel 4 is rotatably mounted on the frame 1, and the rotation center line of the bracket 3 is perpendicular to the rotation center line of the guide wheel 4, where the bracket 3 is The main body has a U-shaped frame, the U-shaped frame has a bottom portion and two free ends, and a mounting rod extends outwardly at an intermediate position of the bottom portion. The extending direction of the mounting rod is opposite to the extending direction of the free end, and the mounting rod is rotated on the machine. The mounting hole is formed in the mounting hole of the frame 1, and the guide wheel 4 is embedded between the two free ends of the U-shaped frame and is rotatably assembled with the two free ends through the rotating shaft. A brake lever 5 is slidably disposed on the frame 1 above the two guide wheels 4, and a through hole is formed in the mounting rod of the bracket. The brake lever 5 is slidably disposed in the through hole, and the mounting rod is disposed on the frame. In the mounting hole, the brake lever 5 is indirectly disposed in the frame 1. The brake lever 5 is provided with a stepped surface facing downward, and a reset pressure spring 6 is disposed at a lower portion of the brake lever 5 to reset the compression spring 6 The upper end is pressed against the step surface of the brake lever 5, and the lower end of the reset compression spring 6 is pressed against the bracket 3, and the bracket and the frame are in a rotationally assembled relationship, and then the bracket is axially constrained and assembled on the frame 1, also That is to say, the reset compression spring 6 is indirectly pressed against the bracket. The upper end of the brake lever 5 extends to the upper portion of the frame 1. The lower end of the brake lever 5 extends toward the wheel 4. After the brake lever 5 is moved down, it is pressed against the guide wheel 4, and the guide wheel 4 is braked to make the guide wheel 4 can't rotate relative to the bracket. A transmission shaft 7 is disposed on an upper portion of the plate-shaped body of the frame 1. The transmission shaft 7 is horizontally disposed. The frame 1 has two ear portions, and the ear portion is provided with a through hole, and the transmission shaft 7 passes through the two ears. Therefore, the rotation assembly of the transmission shaft on the frame 1 is realized, and the two ends of the transmission shaft 7 respectively extend to the two brake levers 5, and the brake cams 8 are fixedly mounted at the two ends of the transmission shaft 7, and are stopped on the transmission shaft 7. The foot pedal 9 is assembled and rotated, and the foot pedal 9 is stepped on with the foot. When the foot pedal 9 is tilted, the drive shaft 7 is rotated, and the brake is applied. The cam 8 pushes the brake lever 5, and the brake lever 5 overcomes the spring force of the return compression spring 6 to tighten the guide wheel 4, so that the guide wheel 4 cannot be rotated to achieve the purpose of braking.

In the present embodiment, the brake cam 8 is machined from a disc, and three portions are cut off at the outer circumference of the disc to form three planes, and the three planes are the first plane, the second plane, and the third plane, respectively. The first plane cooperates with the end surface of the brake lever 5 when the footboard 9 is horizontal, and the second plane and the third plane are on both sides of the first plane and intersect the first plane, so that the foot pedal 9 is stepped on. When the brake cam 8 rotates, the brake lever 5 is pressed, the brake lever 5 is moved downward against the elastic force of the reset compression spring 6, and the guide wheel 4 is braked to achieve the purpose of braking.

In this embodiment, the upper end of the brake lever 5 has a pressing block 10, and the pressing block 10 has a through hole. The pressing block 10 is fixedly sleeved on the brake lever through the through hole, and the brake cam 8 is pressed against Press on the block 10. A limiting block 11 is fixedly sleeved on the pressing block 10, and an upper end surface of the limiting block 11 is higher than an upper end surface of the pressing block 10, and a groove is formed on the upper surface of the limiting block 11, and the groove bottom of the groove It is flush with the upper surface of the pressing block 10, and the groove wall around the groove forms a limit edge 12 to provide a limit for the brake cam.

This embodiment is a specific structure, and other structures well known to those skilled in the art that do not exceed the idea of the embodiment are also within the scope of this patent protection.

Embodiment 2 of a brake steering mechanism applied to a mobile G-arm X-ray device. In FIGS. 5 to 7, in combination with FIGS. 1 to 4, the main body of the frame 1 is an elongated plate, which is long. The two ends of the plate are integrally provided with two upwardly extending handle mounting rods 2, and the lower ends of the two ends of the frame 1 are provided with guide wheels 4 through the brackets 3, and the brackets 3 are rotatably mounted on the frame 1, and the guide wheels 4 are rotatably assembled on the machine On the frame 1, the center line of rotation of the bracket 3 is perpendicular to the center line of rotation of the guide wheel 4, where the main body of the bracket 3 has a U-shaped frame having a first bottom and two free ends, in the middle of the bottom. The outer extension is provided with a mounting rod, the extending direction of the mounting rod is opposite to the extending direction of the free end, the mounting rod is rotated and arranged in the mounting hole opened in the frame 1, and the guiding wheel 4 is embedded in the two free ends of the U-shaped frame. Between and through the shaft and two free ends to rotate the assembly. A brake lever 5 is slidably disposed on the frame 1 above the two guide wheels 4, and a through hole is formed in the mounting rod of the bracket. The brake lever 5 is slidably disposed in the through hole, and is disposed on the frame by the mounting rod. In the mounting hole, the brake lever 5 is also indirectly arranged in the frame 1 The brake lever 5 is provided with a stepped surface facing downward, and a reset pressure spring 6 is disposed at a lower portion of the brake lever 5. The upper end of the return pressure spring 6 is pressed against the step surface of the brake lever 5, and the compression spring 6 is reset. The lower end is pressed against the bracket 3, and the bracket and the frame are in a rotationally assembled relationship, and then the bracket is axially bound to the frame 1, that is, the reset compression spring 6 is indirectly pressed against the bracket. The upper end of the brake lever 5 extends to the upper portion of the frame 1. The lower end of the brake lever 5 extends toward the wheel 4. After the brake lever 5 is moved down, it is pressed against the guide wheel 4, and the guide wheel 4 is braked to make the guide wheel 4 can't rotate relative to the bracket. A transmission shaft 7 is disposed on an upper portion of the plate-shaped body of the frame 1. The transmission shaft 7 is horizontally disposed. The frame 1 has two ear portions, and the ear portion is provided with a through hole, and the transmission shaft 7 passes through the two ears. Therefore, the rotation assembly of the transmission shaft on the frame 1 is realized, and the two ends of the transmission shaft 7 respectively extend to the two brake levers 5, and the brake cams 8 are fixedly mounted at the two ends of the transmission shaft 7, and are stopped on the transmission shaft 7. The foot pedal 9 is rotatably assembled, and the foot pedal 9 is stepped on with the foot. When the foot pedal 9 is tilted, the drive shaft 7 is rotated, and the brake cam 8 pushes the brake lever 5, and the brake lever 5 overcomes the spring of the return pressure spring 6. The force is tightened to the guide wheel 4, so that the guide wheel 4 cannot be rotated to achieve the purpose of braking.

A handle 13 is fixedly mounted on the top of one handle mounting rod 2, and the other handle mounting rod has a through hole inside thereof, the through hole extending from the lower surface of the frame. A guide rod 14 is disposed inside the handle mounting rod having a through hole, and the upper end of the guide rod 14 is fixedly fitted with a handle, so that one handle is fixed, and the other handle is rotatable, and both ends of the guide rod 14 are A bearing is disposed between the handle mounting rods to achieve a rotational assembly between the guide rod 14 and the handle mounting rod, the lower end of the guide rod 14 extends out of the lower portion of the frame 1, and the guide rod 14 extends out of the lower portion of the frame 1. The drive wheel 15 is assembled on the rotation stop, and the lower part of the mounting rods of the two brackets 3 are respectively fixedly fitted with the first driven wheel 16 and the second driven wheel 17, that is, the two driven wheels are above the U-shaped frame, Here, the driving wheel, the first driven wheel and the second driven wheel are both sprocket wheels, and the first driven wheel and the second driven wheel are drivingly connected with the driving wheel through the transmission chain 18, and the transmission chain 18 is enclosed by a closing ring, a driving wheel, and a A driven wheel and a second driven wheel are both in a closed loop surrounded by the transmission chain 18, so that when the driving wheel rotates, the transmission chain moves to drive the first driven wheel and the second driven wheel to rotate in the same direction.

The frame in this embodiment is further provided with two tensioning wheels, a first tensioning wheel 19 and a second tensioning wheel. 20. The first tensioning pulley 19 and the second tensioning pulley 20 are respectively located on both sides of the driving pulley 15, and the first tensioning pulley 19 and the second tensioning pulley 20 mesh with the transmission chain on the outside of the transmission chain.

In the present embodiment, the brake cam 8 is machined from a disc, and three portions are cut off at the outer circumference of the disc to form three planes, and the three planes are the first plane, the second plane, and the third plane, respectively. The first plane cooperates with the end surface of the brake lever 5 when the footboard 9 is horizontal, and the second plane and the third plane are on both sides of the first plane and intersect the first plane, so that the foot pedal 9 is stepped on. When the brake cam 8 rotates, the brake lever 5 is pressed, the brake lever 5 is moved downward, and the guide wheel 4 is braked to achieve the purpose of braking.

In other embodiments different from the second embodiment, the driving wheel, the first driven wheel and the second driven wheel may each be a pulley, and the first driven wheel and the second driven wheel are drivingly connected to the driving wheel through a timing belt.

In other embodiments than Embodiment 2, the driving wheel, the first driven wheel and the second driven wheel may also be rollers, and the first driven wheel and the second driven wheel are drivingly coupled to the driving wheel via a wire.

During operation, the handle is rotated, the handle is driven to rotate with the guiding rod of the anti-rotation assembly, and the driving wheel of the steering rod is also rotated, and the driving wheel drives the first driven wheel and the second driven wheel to rotate, and The brackets of the first driven wheel and the second driven wheel are assembled, and the steering wheel is tilted to achieve the purpose of steering the device.

Embodiment 3 of a brake steering mechanism applied to a mobile G-arm X-ray device. In FIGS. 8 to 10, in conjunction with FIGS. 1 to 7, the main body of the frame 1 is an elongated plate, which is long. The two ends of the plate are integrally provided with two upwardly extending handle mounting rods 2, and the lower ends of the frame 1 are provided through the brackets 3 The guide wheel 4 is disposed, the bracket 3 is rotatably mounted on the frame 1, and the guide wheel 4 is rotatably mounted on the frame 1. The rotation center line of the bracket 3 is perpendicular to the rotation center line of the guide wheel 4, wherein the main body of the bracket 3 has a U a U-shaped frame having a first bottom portion and two free ends, and a mounting rod extending outwardly at an intermediate position of the bottom portion, the extending direction of the mounting rod is opposite to the extending direction of the free end, and the mounting rod is rotated on the frame 1 In the upper mounting hole, the guide wheel 4 is embedded between the two free ends of the U-shaped frame and is rotatably assembled with the two free ends through the rotating shaft. A brake lever 5 is slidably disposed on the frame 1 above the two guide wheels 4, and a through hole is formed in the mounting rod of the bracket. The brake lever 5 is slidably disposed in the through hole, and is disposed on the frame by the mounting rod. In the mounting hole, the brake lever 5 is indirectly disposed in the frame 1. The brake lever 5 is provided with a stepped surface facing downward, and a reset pressure spring 6 is disposed at a lower portion of the brake lever 5 to reset the compression spring 6. The upper end is pressed against the step surface of the brake lever 5, and the lower end of the reset compression spring 6 is pressed against the bracket 3. The bracket and the frame are in a rotationally assembled relationship, and then the bracket is axially constrained and assembled on the frame 1, that is, It is said that the reset compression spring 6 is indirectly pressed against the bracket. The upper end of the brake lever 5 extends to the upper portion of the frame 1. The lower end of the brake lever 5 extends toward the wheel 4. After the brake lever 5 is moved down, it is pressed against the guide wheel 4, and the guide wheel 4 is braked to make the guide wheel 4 can't rotate relative to the bracket. A transmission shaft 7 is disposed on an upper portion of the plate-shaped body of the frame 1. The transmission shaft 7 is horizontally disposed. The frame 1 has two ear portions, and the ear portion is provided with a through hole, and the transmission shaft 7 passes through the two ears. Therefore, the rotation assembly of the transmission shaft on the frame 1 is realized, and the two ends of the transmission shaft 7 respectively extend to the two brake levers 5, and the brake cams 8 are fixedly mounted at the two ends of the transmission shaft 7, and are stopped on the transmission shaft 7. The foot pedal 9 is rotatably assembled, and the foot pedal 9 is stepped on with the foot. When the foot pedal 9 is tilted, the drive shaft 7 is rotated, and the brake cam 8 pushes the brake lever 5, and the brake lever 5 overcomes the spring of the return pressure spring 6. The force is tightened to the guide wheel 4, so that the guide wheel 4 cannot be rotated to achieve the purpose of braking.

A handle 13 is fixedly mounted on the top of one handle mounting rod 2, and the other handle mounting rod has a through hole inside thereof, the through hole extending from the lower surface of the frame. A guide rod 14 is disposed inside the handle mounting rod having a through hole, and the upper end of the guide rod 14 is fixedly fitted with a handle, so that one handle is fixed, and the other handle is rotatable, and both ends of the guide rod 14 are A bearing is disposed between the handle mounting rods to realize a rotational assembly between the guide rod 14 and the handle mounting rod, and the guide rod 14 The lower end of the frame protrudes from the lower portion of the frame 1, and the portion of the guide rod 14 that protrudes from the lower portion of the frame 1 is fitted with the driving wheel 15, and the lower portion of the mounting rod of the two brackets 3 is respectively fixed and fitted with the first driven wheel 16 And the second driven wheel 17, that is, the two driven wheels are above the U-shaped frame, wherein the driving wheel, the first driven wheel and the second driven wheel are both sprocket, first driven wheel and second The driven wheel is connected to the driving wheel through the transmission chain 18, and the transmission chain 18 encloses a closed loop. The driving wheel, the first driven wheel and the second driven wheel are both in a closed loop surrounded by the transmission chain 18, so that the driving wheel rotates. When the transmission chain moves, the first driven wheel and the second driven wheel rotate in the same direction.

The frame in this embodiment is further provided with two tensioning wheels, a first tensioning pulley 19 and a second tensioning pulley 20, and the first tensioning pulley 19 and the second tensioning pulley 20 are respectively located on the driving wheel 15 On both sides, the first tensioning pulley 19 and the second tensioning pulley 20 mesh with the transmission chain on the outside of the transmission chain.

A lower locking block 21 is fixed on the guiding rod 14 , and the lower locking block 21 is located below the joint of the handle and the handle mounting rod. The inside of the handle mounting rod slides over the lower locking block and is locked. The handle block 2 is a part of the frame, and the upper locking block 22 is disposed on the frame. The end surface of the upper locking block 22 opposite to the lower locking block 21 is a lower end surface, the end surface of the lower locking block 21 opposite to the upper locking block 22 is an upper end surface, and the lower end surface of the upper locking block 22 is provided with a locking The teeth 23 are also provided with locking teeth 23 on the upper end surface of the lower locking block 21. After the upper locking block 22 is moved down, the locking teeth on the upper locking block and the locking teeth on the lower locking block are mutually The upper end of the handle mounting rod 2 is fixedly provided with a fixing block 24, and the lower part of the fixing block 24 extends into the through hole of the handle mounting rod 2, and the fixing block is above the upper locking block 22 at the fixing block 24 A locking spring 25 is disposed between the upper locking block 22 and the locking spring 25 pushes the upper locking block 22 downward to lock it with the lower locking block. A brake cam shaft 26 perpendicular to the handle mounting rod 2 is disposed on the handle mounting rod 2, and the inner end of the brake cam shaft 26 extends into the handle mounting rod 2 and is located between the upper and lower locking blocks at the brake cam The inner end of the shaft 26 is fixed with a locking brake cam 27, and the locking brake cam 27 is pressed against the upper locking block 22. When the locking brake cam 27 rotates, the elastic force of the locking spring 25 can be overcome to lock the upper locking block. 22 pushes up so that the upper locking block is separated from the lower locking block. The outer end of the brake camshaft extends out of the handle mounting rod 2, and a locking knob 28 is fixed on the outer end of the brake camshaft extending from the handle mounting rod, and the brake cam can be rotated by rotating the locking knob The shaft, thereby driving the locking brake cam to rotate, causes the locking brake cam to press upwardly against the locking block, and during the rotation of the locking brake cam, and the locking spring can make the upper locking block move up and down, thereby realizing Locking and separating from the lower locking block.

In other embodiments different from the third embodiment, the driving wheel, the first driven wheel and the second driven wheel may each be a pulley, and the first driven wheel and the second driven wheel are drivingly connected to the driving wheel through a timing belt.

In other embodiments different from Embodiment 3, the driving wheel, the first driven wheel and the second driven wheel may also be rollers, and the first driven wheel and the second driven wheel are drivingly coupled to the driving wheel via a wire.

During operation, the handle is rotated, the handle is driven to rotate with the guiding rod of the anti-rotation assembly, and the driving wheel of the steering rod is also rotated, and the driving wheel drives the first driven wheel and the second driven wheel to rotate, and The brackets of the first driven wheel and the second driven wheel are assembled, and the steering wheel is tilted to achieve the purpose of steering the device. After the steering is completed, when the guide wheel needs to continue to advance along the rotated state, the locking knob 28 can be rotated to release the upward pressing force of the locking brake cam on the upper locking block, so that the upper locking block can be moved downward. At this time, the upper locking block will move down under the action of the locking spring and Locking with the lower locking block, since the upper locking block is fixedly engaged with the handle mounting rod, and the lower locking block is fixed on the guiding rod, and the handle is assembled with the guiding rod, then When the upper and lower locking blocks are in the locked state, the guiding rod cannot be rotated relative to the frame, so that the guiding wheels can not be turned, and the steering lock is realized. The device can be moved linearly in the direction of the turn.

Embodiment 4 of a brake steering mechanism applied to a mobile G-arm X-ray apparatus. In FIGS. 11 to 12, in conjunction with FIG. 1 to FIG. 7, the main body of the frame 1 is an elongated plate. Two ends of the elongated plate are integrally provided with two upwardly extending handle mounting rods 2, and the lower ends of the two ends of the frame 1 are provided with guide wheels 4 through the brackets 3, and the brackets 3 are rotatably mounted on the frame 1, and the guide wheels 4 are rotatably assembled On the frame 1, the center line of rotation of the bracket 3 is perpendicular to the center line of rotation of the guide wheel 4, where the main body of the bracket 3 has a U-shaped frame having a first bottom and two free ends, in the middle of the bottom. The mounting rod is extended outwardly, and the extending direction of the mounting rod is opposite to the extending direction of the free end. The mounting rod is rotated in the mounting hole formed in the frame 1, and the guiding wheel 4 is embedded in the two free ends of the U-shaped frame. Between and through the shaft and two free ends to rotate the assembly. A brake lever 5 is slidably disposed on the frame 1 above the two guide wheels 4, and a through hole is formed in the mounting rod of the bracket. The brake lever 5 is slidably disposed in the through hole, and is disposed on the frame by the mounting rod. In the mounting hole, the brake lever 5 is indirectly disposed in the frame 1. The brake lever 5 is provided with a stepped surface facing downward, and a reset pressure spring 6 is disposed at a lower portion of the brake lever 5 to reset the compression spring 6. The upper end is pressed against the step surface of the brake lever 5, and the lower end of the reset compression spring 6 is pressed against the bracket 3. The bracket and the frame are in a rotationally assembled relationship, and then the bracket is axially constrained and assembled on the frame 1, that is, It is said that the reset compression spring 6 is indirectly pressed against the bracket. The upper end of the brake lever 5 extends to the upper portion of the frame 1. The lower end of the brake lever 5 extends toward the wheel 4. After the brake lever 5 is moved down, it is pressed against the guide wheel 4, and the guide wheel 4 is braked to make the guide wheel 4 can't rotate relative to the bracket. A transmission shaft 7 is disposed on an upper portion of the plate-shaped body of the frame 1. The transmission shaft 7 is horizontally disposed. The frame 1 has two ear portions, and the ear portion is provided with a through hole, and the transmission shaft 7 passes through the two ears. Therefore, the rotation assembly of the transmission shaft on the frame 1 is realized, and the two ends of the transmission shaft 7 respectively extend to the two brake levers 5, and the brake cams 8 are fixedly mounted at the two ends of the transmission shaft 7, and are stopped on the transmission shaft 7. The foot pedal 9 is rotatably assembled, and the foot pedal 9 is stepped on with the foot. When the foot pedal 9 is tilted, the drive shaft 7 is rotated, and the brake cam 8 pushes the brake lever. 5. The brake lever 5 overcomes the spring force of the return compression spring 6 to tighten the guide wheel 4, so that the guide wheel 4 cannot be rotated to achieve the purpose of braking.

A rotating shaft 29 perpendicular to the handle mounting rod is disposed on the upper portion of the handle mounting rod 2, and the rotating shaft 29 is rotatably engaged with the handle mounting rod. The inner end of the rotating shaft 29 extends into the handle mounting rod, and the outer end of the rotating shaft 29 extends out of the handle mounting rod and A locking knob is fixed, and the inner end of the shaft 29 is provided with a thread. The U-shaped ferrule 30 is disposed on the guiding rod 14 , and the U-shaped ferrule has two free ends. The free end of the U-shaped yoke 30 adjacent to the locking knob is provided with a through hole, which is opened away from the free end of the locking knob. a threaded hole, the inner end of the shaft 29 provided with the thread passing through the through hole provided on the corresponding free end and screwed into the threaded hole corresponding to the free end, and the outer peripheral surface of the rotating shaft 29 is provided with a stepped surface facing the inner end, the stepped surface The top press is on the free end provided with the through hole, and the U-shaped band 30 is fixed to the handle mounting rod 2 through the free end of the threaded hole. In this way, turning the locking knob will drive the rotation of the shaft, and the step surface of the shaft and the freedom of setting the through hole The top end press fits, the rotating shaft rotates through the mating threads, so that the two free ends are tightly closed, and the U-shaped hoop 30 clamps the guiding rod. Since the U-shaped hoop 30 is fixed on the handle mounting rod, the guiding rod cannot be rotated. Then, the steering wheel can not be turned, and the steering lock is realized. The device can be moved linearly in the direction of the turn.

In other embodiments different from the fourth embodiment, the driving wheel, the first driven wheel and the second driven wheel may also be pulleys. The first driven wheel and the second driven wheel are connected to the driving wheel through the timing belt. A first tensioning wheel and a second tensioning wheel are respectively disposed on the two sides of the driving wheel, and the first tensioning wheel and the second tensioning wheel are disposed outside the timing belt.

In other embodiments than Embodiment 4, the driving wheel, the first driven wheel and the second driven wheel may also be rollers, and the first driven wheel and the second driven wheel are drivingly coupled to the driving wheel via a wire.

Embodiment 1 is an embodiment supporting the exclusive right of the present invention, and Embodiments 3 and 4 are preferred embodiments of the present invention.

Claims

A brake steering mechanism applied to a mobile G-arm X-ray device is characterized in that: a frame (1) is included, and both ends of the lower part of the frame (1) are rotated and equipped with a guide wheel by a bracket (3) (4) The bracket (3) is rotatably mounted on the frame (1), and the guide wheel (4) is rotatably mounted on the bracket (3). The center line of rotation of the guide wheel (4) is perpendicular to the center of rotation of the bracket (3) On the wire, the frame (1) is slidably disposed above the guide wheel (4) with a brake lever (5). The brake rod (5) is sleeved with an upper end pressed against the brake lever (5) and the lower end is pressed against the machine. The reset pressure spring (6) on the frame (1) is rotatably mounted with a transmission shaft (7) on the frame (1), and the two ends of the transmission shaft (7) are respectively provided with a corresponding brake lever (5). The upper end of the brake cam (8), the drive shaft (7) is set to have a foot pedal, and the pedal is rotated by the drive shaft (7) to drive the brake cam (8) to rotate, the brake cam (8) The brake lever (5) is pressed against the guide wheel (4) against the pressure of the reset compression spring (6).
A brake steering mechanism applied to a mobile G-arm X-ray apparatus according to claim 1, wherein said brake cam (8) is a wheel body having three planes on an outer peripheral surface, said three The planes are respectively a first plane, a second plane and a third plane, the first plane is matched with the end surface of the brake lever (5) when the pedal is horizontal, and the second plane and the third plane are at the first plane The side intersects with the first plane.
The brake steering mechanism applied to the mobile G-arm X-ray device according to claim 2, wherein the brake cam (8) passes through the pressing block (10) disposed at the upper end of the brake lever (5). Pressing with the brake lever (5), the pressing block (10) is fixedly sleeved on the top end of the brake lever (5) through the through hole, and the brake cam (8) is pressed against the end surface of the pressing block (10). .
The brake steering mechanism applied to the mobile G-arm X-ray device according to claim 3, wherein the pressing block (10) is sleeved with a limiting block (11) and a limiting block ( 11) The sleeve is fixedly sleeved on the pressing block (10), and the end surface of the limiting block (11) is surrounded by a limiting edge (12) on the outer side of the brake cam (8).
The brake steering mechanism applied to a mobile G-arm X-ray apparatus according to any one of claims 1 to 4, characterized in that: the upper part of the frame (1) has two backward bent Handle (13), wherein one of the handles (13) is provided with a guide rod (14) extending downwardly and rotatably assembled with the frame (1), one end of the guide rod (14) is assembled with the handle (13), and the other end is assembled The rotation preventing assembly is provided with a driving wheel (15), and the two supporting brackets (3) are respectively fixedly equipped with a first driven wheel (16) and a second driven wheel (17), a first driven wheel (16) and a second driven wheel ( 17) Driven with the driving wheel (15), the steering of the first driven wheel (16) and the second driven wheel (17) are the same.
A brake steering mechanism applied to a mobile G-arm X-ray apparatus according to claim 5, wherein said driving wheel (15), said first driven wheel (16) and said second (17) are The moving wheels are all sprocket wheels, and the first driven wheel (16) and the second driven wheel (17) are drivingly connected with the driving wheel (15) through a transmission chain (18), the driving wheel (15) and the first driven wheel (16) And the second driven wheel (17) is in turn meshed with the transmission chain (18) on the inside of the transmission chain (18).
The brake steering mechanism applied to the mobile G-arm X-ray device according to claim 6, wherein the frame (1) is respectively rotated on both sides of the driving wheel (15). a tensioning wheel (19) and a second tensioning pulley (20), the first tensioning pulley (19) and the second tensioning pulley (20) are located outside the transmission chain (18) and with the transmission chain ( 18) Engage.
The brake steering mechanism applied to a mobile G-arm X-ray device according to claim 5, characterized in that: the driving wheel (15), the first driven wheel (16) and the second driven wheel (17) Both are pulleys, and the first driven wheel (16) and the second driven wheel (17) are drivingly coupled to the driving wheel (15) via a timing belt.
The brake steering mechanism applied to the mobile G-arm X-ray device according to claim 8, wherein the frame (1) is respectively rotated on both sides of the driving wheel (15). A tensioning wheel (19) and a second tensioning pulley (20), the first tensioning pulley (19) and the second tensioning pulley (20) are located outside the timing belt.
The brake steering mechanism applied to the mobile G-arm X-ray device according to claim 5, wherein the guide rod (14) is fixed on a lower portion of the joint between the handle and the frame (1). The lower locking block (21) is provided with an upper locking block (22) on the upper and lower locking blocks (21) The upper locking block (22) slides down and snaps against each other A locking spring (23), a locking spring (25) for pressing the upper locking block (22) downwardly between the upper locking block (22) and the frame (1), the frame (1) A locking knob is arranged on the brake camshaft (26), one end of the brake camshaft (26) is fixed with the locking knob, and the other end is fixed with the locking spring (25) to drive the upper locking block (22) Lock the brake cam (27) up and down.
A brake steering mechanism applied to a mobile G-arm X-ray device according to any one of claims 5, wherein the frame (1) is coupled to the handle and the frame (1) A locking knob (28) is disposed through the rotating shaft (29), and the locking knob (28) is fixedly mounted on the end of one end of the rotating shaft (29), and the other end of the rotating shaft (29) is provided with a thread, the guiding The movable sleeve of the rod (14) is provided with a U-shaped hoop (30) fixed on the frame (1), and the free end of the U-shaped hoop (30) near the locking knob (28) is provided with a through hole and away from the lock. A threaded hole is formed in the free end of the tightening knob (28), and one end of the threaded shaft is inserted into the through hole corresponding to the free end, and then screwed into the threaded hole corresponding to the free end, and the outer peripheral surface of the rotating shaft is provided with a U-shaped hoop (30) The corresponding free end press fit causes the U-shaped band (30) to clamp the stepped surface of the guide bar (14).