Gravity balance full-automatic adjusting device for cross arm of medical X-ray machine

Abstract

The utility model discloses a full-automatic gravitational equilibrium adjusting device for a cross arm of a medical X-ray machine, which belongs to the technical field of medical imaging equipment, and comprises a cross arm frame, one end of the cross arm frame is fixedly connected with a driving motor, the other end of the cross arm frame is fixedly connected with a detector, and the detector is fixedly connected with the driving motor. The output end of the driving motor is fixedly connected with a driving screw rod, one side of the driving screw rod is provided with a driven screw rod, and the outer sides of the driving screw rod and the driven screw rod are both sleeved with ball sliding blocks. According to the scheme, the pair of adjusting assemblies arranged in a staggered mode is arranged, the problem that the positions of a bulb tube and a balancing weight conflict is solved, and therefore the adjusting range of the bulb tube is enlarged; and in addition, the positioning assembly is arranged, quality adjustment work can be conducted on the counterweight assembly, and therefore the adjusting device is suitable for bulb tubes of different specifications, and the using effect of the adjusting device is further improved.

Description

Technical Field

[0001] This utility model relates to the field of medical imaging equipment technology, and more specifically, to a fully automatic gravity balance adjustment device for the cross arm of a medical X-ray machine. Background Technology

[0002] The horizontal arm of a medical X-ray machine mainly serves to support the X-ray tube and detector. During use, the horizontal arm needs to be rotated to take different X-ray images. When rotating the horizontal arm, the distance between the X-ray tube and the detector also needs to be adjusted. Since the detector end is fixed and cannot move along the horizontal arm, the distance can only be adjusted by moving the X-ray tube along the horizontal arm. When the X-ray tube end moves relative to the horizontal arm, the gravitational balance of the entire horizontal arm is broken. At this time, an adjustment device is needed to maintain the balance of the horizontal arm, prevent it from rotating, and keep the center of gravity of the horizontal arm constant during the movement of the X-ray tube.

[0003] For example, Chinese utility model patent with announcement number CN202821383U discloses a gravity balancing device for the horizontal arm of an X-ray machine, which is installed inside the horizontal arm to maintain the gravity balance of the horizontal arm. The gravity balancing device includes a counterweight module that can move in the opposite direction to the movement direction of the X-ray tube of the X-ray machine.

[0004] Based on the above, the inventors discovered that the prior art document with publication number CN202821383U uses a transmission chain structure to set up an X-ray tube and a counterweight that move in opposite directions, thereby ensuring the gravity balance of the cross arm. However, the X-ray tube and the counterweight are located on the same horizontal line inside the cross arm, which causes positional conflict and limits the adjustment range. At the same time, the counterweight is inside the cross arm and is not easy to adjust, so it can only be used for X-ray tubes of fixed mass, which further affects the performance of the adjustment device. Therefore, in view of this, the inventors have studied and improved the existing structure to provide a fully automatic gravity balance adjustment device for the cross arm of a medical X-ray machine, in order to achieve a more practical purpose. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a fully automatic gravity balance adjustment device for the crossarm of a medical X-ray machine. This solution sets up a pair of staggered adjustment components to solve the problem of positional conflict between the X-ray tube and the counterweight, thereby expanding the adjustment range of the X-ray tube and improving the adjustment effect of the adjustment device. In addition, a positioning component is set up to adjust the mass of the counterweight component, thereby adapting to X-ray tubes of different specifications and further improving the use effect of the adjustment device.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution.

[0009] An automatic gravity balance adjustment device for the horizontal arm of a medical X-ray machine includes a horizontal arm frame. A drive motor is fixedly connected to one end of the horizontal arm frame, and a detector is fixedly connected to the other end of the horizontal arm frame. A drive screw is fixedly connected to the output end of the drive motor. A driven screw is provided on one side of the drive screw. A ball bearing slider is sleeved on the outer side of both the drive screw and the driven screw. A mounting plate is fixedly connected to the outer side of the ball bearing slider. An X-ray tube and a counterweight box are fixedly connected to the outer side of the two mounting plates, respectively. A set of counterweight blocks is filled inside the counterweight box, and a positioning mechanism is provided at one end of the counterweight box.

[0010] The positioning mechanism includes a sealing cover, a threaded rod is threadedly connected to the middle of the sealing cover, a handwheel is fixedly connected to the outer end of the threaded rod, and a positioning plate is movably connected to the inner end of the threaded rod.

[0011] Furthermore, both the driving screw and the driven screw are located inside the crossarm, and both the driving screw and the driven screw are movably connected to the crossarm.

[0012] Furthermore, both the driving lead screw and the driven lead screw have a toothed ring fixedly connected to their ends away from the drive motor, and the two toothed rings are meshed together.

[0013] Furthermore, the two mounting plates are located on the front and rear sides of the crossarm, respectively, and guide rods are provided through both ends of the mounting plates.

[0014] Furthermore, bolts are installed through the four corners of the sealing cover, and the bolts are threadedly connected to the counterweight box.

[0015] Furthermore, the positioning plate is located inside the counterweight box, and the positioning plate is slidably connected to the counterweight box.

[0016] Furthermore, the inner side of the positioning plate is in contact with the outermost counterweight among a plurality of counterweights.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] (1) This solution uses an active lead screw to drive the corresponding gear ring to rotate. The two gear rings cooperate with each other to make the driven lead screw rotate in the opposite direction, which in turn makes the two ball sliders move in the opposite direction. The movement of the ball sliders drives the movement of the mounting plate, so that the ball tube and the counterweight box move in the opposite direction synchronously, ensuring the stability of the center of gravity of the cross arm frame. Compared with the existing technology, a pair of staggered adjustment components are set to solve the problem of position conflict between the ball tube and the counterweight, thereby expanding the adjustment range of the ball tube and improving the adjustment effect of the adjustment device.

[0020] (2) By setting a positioning mechanism, a counterweight of the same mass as the tube is placed inside the counterweight box. Then, the sealing cover is fixed on the outside of the counterweight box. The screw rod is rotated by the handwheel. The rotation of the screw rod causes the positioning plate to slide inside the counterweight box, so that the inner side of the positioning plate is in contact with the outermost counterweight among several counterweights, thereby completing the position fixing of the counterweight. Compared with the prior art, setting a positioning component can adjust the mass of the counterweight component, thereby adapting to tubes of different specifications and further improving the use effect of the adjustment device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram showing the positional relationship between the driving lead screw and the driven lead screw of this utility model;

[0023] Figure 3 This is a schematic diagram of the internal structure of the counterweight box of this utility model;

[0024] Figure 4 This is an exploded view of the positioning mechanism of this utility model.

[0025] The following are the labels in the diagram: 1. Horizontal boom; 2. Drive motor; 3. Detector; 4. Lead screw; 5. Driven lead screw; 6. Gear ring; 7. Ball block slider; 8. Mounting plate; 9. Ball tube; 10. Counterweight box; 11. Counterweight block; 12. Positioning mechanism; 13. Sealing cover; 14. Threaded rod; 15. Positioning plate; 16. Handwheel. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] Example:

[0028] Please see Figure 1-4An automatic gravity balance adjustment device for the horizontal arm of a medical X-ray machine includes a horizontal arm 1. A drive motor 2 is fixedly connected to one end of the horizontal arm 1, and a detector 3 is fixedly connected to the other end of the horizontal arm 1. An active lead screw 4 is fixedly connected to the output end of the drive motor 2. A driven lead screw 5 is provided on one side of the active lead screw 4. A ball slider 7 is sleeved on the outer side of both the active lead screw 4 and the driven lead screw 5. An mounting plate 8 is fixedly connected to the outer side of the ball slider 7. An X-ray tube 9 and a counterweight box 10 are fixedly connected to the outer side of the two mounting plates 8, respectively. A set of counterweight blocks 11 is filled inside the counterweight box 10, and a positioning mechanism 12 is provided at one end of the counterweight box 10.

[0029] The positioning mechanism 12 includes a sealing cover 13, a threaded rod 14 is threadedly connected to the middle of the sealing cover 13, a handwheel 16 is fixedly connected to the outer end of the threaded rod 14, and a positioning plate 15 is movably connected to the inner end of the threaded rod 14. The positioning mechanism 12 is provided to facilitate the adjustment of the counterweight mass and thus adapt to different specifications of ball tubes 9.

[0030] See Figure 2 Both the driving screw 4 and the driven screw 5 are located inside the cross arm 1, and both the driving screw 4 and the driven screw 5 are movably connected to the cross arm 1. The drive motor 2 is started to drive the driving screw 4 to rotate.

[0031] See Figure 2 Both the driving screw 4 and the driven screw 5 are fixedly connected to a toothed ring 6 at the end away from the drive motor 2, and the two toothed rings 6 are meshed together. Through the cooperation of the two toothed rings 6, the driven screw 5 is rotated in the opposite direction, which in turn causes the two ball sliders 7 to move in the opposite direction.

[0032] See Figure 1 Two mounting plates 8 are located on the front and rear sides of the cross arm 1, respectively, and guide rods are installed through both ends of the mounting plates 8. The movement of the ball block slider 7 drives the movement of the mounting plates 8, thereby causing the ball tube 9 and the counterweight box 10 to move in opposite directions synchronously, ensuring the stability of the center of gravity of the cross arm 1.

[0033] See Figure 4 Bolts are installed through the four corners of the sealing cover 13. The bolts are threaded to the counterweight box 10. First, remove the sealing cover 13 and put the counterweight block 11 with the same mass as the ball tube 9 into the counterweight box 10. Then, fix the sealing cover 13 to the outside of the counterweight box 10 with bolts.

[0034] See Figure 4 The positioning plate 15 is located inside the counterweight box 10 and is slidably connected to the counterweight box 10. The threaded rod 14 is rotated by the handwheel 16. Since the threaded rod 14 is threadedly connected to the sealing cover 13 and the inner end of the threaded rod 14 is movably connected to the positioning plate 15, the rotation of the threaded rod 14 causes the positioning plate 15 to slide inside the counterweight box 10.

[0035] See Figure 3 The inner side of the positioning plate 15 is in contact with the outermost counterweight 11 among the several counterweight blocks 11, thereby fixing the position of the counterweight block 11 and preventing the counterweight block 11 from shaking during the rotation of the horizontal boom 1.

[0036] In use: First, remove the sealing cap 13. Place the counterweight 11 with the same mass as the X-ray tube 9 into the counterweight box 10. Then, fix the sealing cap 13 to the outside of the counterweight box 10 with bolts. Rotate the threaded rod 14 by the handwheel 16. Since the threaded rod 14 is threadedly connected to the sealing cap 13, and the inner end of the threaded rod 14 is movably connected to the positioning plate 15, the rotation of the threaded rod 14 causes the positioning plate 15 to slide inside the counterweight box 10, so that the inner side of the positioning plate 15 is aligned with the outermost counterweight 11 among the several counterweights 11. The counterweight 11 is fixed in place by fitting together. Then, the X-ray film can be taken by the detector 3 in conjunction with the X-ray tube 9. During the taking process, the horizontal arm 1 rotates to adjust the shooting angle. At this time, the drive motor 2 is started to drive the active lead screw 4 to rotate. Through the cooperation of the two gear rings 6, the driven lead screw 5 rotates in the opposite direction, which in turn causes the two ball sliders 7 to move in the opposite direction. The movement of the ball sliders 7 drives the movement of the mounting plate 8, so that the X-ray tube 9 and the counterweight box 10 move in opposite directions synchronously, ensuring the stability of the center of gravity of the horizontal arm 1.

[0037] Finally, it should be noted that in the description of this utility model, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0038] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A fully automatic gravity balance adjustment device for the horizontal arm of a medical X-ray machine, comprising a horizontal arm frame (1), wherein a drive motor (2) is fixedly connected to one end of the horizontal arm frame (1), and a detector (3) is fixedly connected to the other end of the horizontal arm frame (1), characterized in that: The output end of the drive motor (2) is fixedly connected to the active lead screw (4), and a driven lead screw (5) is provided on one side of the active lead screw (4). A ball slider (7) is sleeved on the outer side of both the active lead screw (4) and the driven lead screw (5). An mounting plate (8) is fixedly connected to the outer side of the ball slider (7). A ball tube (9) and a counterweight box (10) are fixedly connected to the outer side of the two mounting plates (8) respectively. A set of counterweight blocks (11) is filled inside the counterweight box (10), and a positioning mechanism (12) is provided at one end of the counterweight box (10). The positioning mechanism (12) includes a sealing cover (13), a threaded rod (14) is threadedly connected to the middle of the sealing cover (13), a handwheel (16) is fixedly connected to the outer end of the threaded rod (14), and a positioning plate (15) is movably connected to the inner end of the threaded rod (14).

2. The gravity balance automatic adjusting device of a medical X-ray machine cross arm according to claim 1, characterized in that: The active lead screw (4) and the driven lead screw (5) are both located inside the cross arm (1), and the active lead screw (4) and the driven lead screw (5) are both movably connected to the cross arm (1).

3. The gravity balance automatic adjusting device of a medical X-ray machine cross arm according to claim 1, characterized in that: The active lead screw (4) and the driven lead screw (5) are both fixedly connected to a toothed ring (6) at the end away from the drive motor (2), and the two toothed rings (6) are meshed together.

4. The gravity balance automatic adjusting device of a medical X-ray machine cross arm according to claim 1, characterized in that: The two mounting plates (8) are located on the front and rear sides of the cross arm (1), and guide rods are provided through both ends of the mounting plates (8).

5. The fully automatic gravity balance adjustment device for the horizontal arm of a medical X-ray machine according to claim 1, characterized in that: Bolts are installed through the four corners of the sealing cover (13), and the bolts are threadedly connected to the counterweight box (10).

6. The gravity balance automatic adjusting device of a medical X-ray machine cross arm according to claim 1, characterized in that: The positioning plate (15) is located inside the counterweight box (10), and the positioning plate (15) is slidably connected to the counterweight box (10).

7. The gravity balance automatic adjusting device of a medical X-ray machine cross arm according to claim 1, characterized in that: The inner side of the positioning plate (15) is in contact with the outermost counterweight (11) among a plurality of counterweights (11).

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