Brain support frame for head nerve examination

Abstract

The utility model discloses a brain supporting frame for head nerve examination, and relates to the technical field of medical instruments. One side of the adapter plate is rotatably connected with one end of a scanning bed, a conversion assembly is arranged on the adapter plate close to the scanning bed, a support frame assembly is fixedly arranged on one side of the adapter plate far away from the scanning bed, a fixed plate is fixedly connected on one side of the adapter plate far away from the scanning bed, and an angle adjusting assembly is arranged on the fixed plate. Different modes are switched according to the supine or prostrate examination postures of a patient, so that the comfort of the patient during use is improved, the head of the patient is prevented from moving due to discomfort, and the examination effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of medical instruments, and particularly relates to a brain support frame for head nerve examination. BACKGROUND

[0002] When patients are examined, for example, visual nerves, auditory nerves, olfactory nerves, etc., brain support frames are generally not needed, but if the patients may have craniocerebral injury, cerebrovascular disease, brain tumor, etc., the brain is often examined in cooperation with CT, and the patient's head needs to be kept still during CT examination, so a support frame capable of fixing the head is needed for the patient to use.

[0003] Chinese patent CN220158403U discloses a head and neck fixing support for examination, the support includes a support plate, one end of the support plate is fixed with a support column, the other end of the support plate is fixed with a top plate, a head adjusting assembly is rotatably arranged on the support column, the device clamps and fixes the patient's head through the arc-shaped plate and the clamping plate, can support and fix the patient's head during examination, and reduces the burden on the neck.

[0004] However, when the above-mentioned device is used, if the patient needs to use a prone position for examination, since the part of the device in contact with the head is a smooth arc, the patient may press the nose when using the device in a prone position, which may affect the patient's breathing, and the comfort level is low, and the patient may unconsciously move the head, which may affect the examination effect.

[0005] At present, no effective solution has been proposed for the problems in the related art. UTILITY MODEL CONTENTS

[0006] In view of the problems in the related art, the utility model provides a brain support frame for head nerve examination to overcome the above-mentioned technical problems existing in the prior art.

[0007] To solve the above-mentioned technical problems, the utility model is implemented by the following technical scheme:

[0008] The utility model is a brain support frame for head nerve examination, which includes an adapter plate, one end of a scanning bed is rotatably connected to one side of the adapter plate, a conversion assembly is arranged on the adapter plate close to the scanning bed, a support frame assembly is fixedly arranged on the side of the adapter plate away from the scanning bed, a fixed plate is fixedly connected to the side of the adapter plate away from the scanning bed, and an angle adjusting assembly is arranged on the fixed plate.

[0009] The scanning bed is used to carry the body of the patient except the head, and the head of the patient is located on the support frame assembly, the support frame assembly is used to support the front end and the rear end of the head of the patient, the conversion assembly is used to rotate and fix the support frame assembly, so as to change the switching of the carrying function of the support frame assembly to the front end and the rear end of the head of the patient, and the angle adjusting assembly is used to adjust the angle of the support frame assembly relative to the upper surface of the scanning bed.

[0010] Further, the conversion assembly comprises a rotating shaft, one end of the rotating shaft is fixedly connected to one side of the adapter plate, the other side of the rotating shaft is rotatably connected to one end of the scanning bed, and two groups of pin holes are formed in the end of the scanning bed close to the adapter plate.

[0011] Further, the conversion assembly further comprises two groups of rod holes, the rod holes are formed in the two ends of the adapter plate, the conversion assembly further comprises two groups of rod holes, the rod holes are formed in the two ends of the adapter plate, one side of the adapter plate is fixedly connected to the bottom of a latch spring coaxial with the rod hole, the inner diameter of the latch spring is slightly larger than the diameter of the rod hole, the latch spring is in a stretched state, the top of the latch spring is fixedly connected to the bottom of a spring baffle, the bottom of the spring baffle is fixedly connected to the bottom of a handle, the bottom of the spring baffle is fixedly connected to one end of a latch, and the latch is arranged in the latch spring, the other end of the latch penetrates through the rod hole, and the other end of the latch is used for clamping the pin hole, and one side of the adapter plate is fixedly installed with an outer cylinder coaxial with the latch spring, the inner diameter of the outer cylinder is larger than the outer diameter of the latch spring, a T-shaped sliding groove is formed in the side surface of the outer cylinder, the T-shaped sliding groove penetrates through the side surface of the outer cylinder, and the spring baffle is slidingly connected in the T-shaped sliding groove.

[0012] Further, the support frame assembly comprises a supine headrest, one end of the supine headrest is hingedly connected to one end of the adapter plate, the bottom of the other end of the supine headrest is fixedly connected to the top of two groups of supine support springs, and the bottom of the two groups of supine support springs is fixedly connected to one side of a fixed plate.

[0013] Further, the support frame assembly further comprises a prone headrest, one end of the prone headrest is hingedly connected to one end of the adapter plate, the bottom of the other end of the prone headrest is fixedly connected to the top of two groups of prone support springs, and the bottom of the two groups of prone support springs is fixedly connected to one side of a fixed plate.

[0014] Further, the angle adjusting assembly comprises an angle adjusting sliding groove, the angle adjusting sliding groove is arranged in the middle of the fixed plate, the middle of one end of the fixed plate is rotationally connected with a screw rod, the screw rod penetrates one end of the fixed plate and is arranged in the angle adjusting sliding groove, and one end of the screw rod arranged in the angle adjusting sliding groove is rotationally connected with one end of the angle adjusting sliding groove, a part of the screw rod arranged in the angle adjusting sliding groove is rotationally connected with an angle adjusting wedge block through threads, the angle adjusting wedge block is slidably connected with the inner wall of the angle adjusting sliding groove, and the other end of the screw rod away from the angle adjusting sliding groove is fixedly connected with a hand wheel, and one side of the hand wheel is provided with a handle.

[0015] The utility model has the advantages of the following beneficial effects:

[0016] 1. The utility model discloses a rotating adapter plate, which is rotated by 180 degrees around the rotating shaft, so that the supine head support or prone head support is turned upward, thereby completing the switching between the supine mode and the prone mode, and the different modes are switched according to the examination posture of the patient in the supine position or the prone position, the comfort of the patient during use is improved, and the patient is prevented from moving the head due to discomfort, thereby improving the examination effect.

[0017] 2. The utility model discloses a rotating adapter plate, which is rotated by 180 degrees around the rotating shaft, so that the supine head support or prone head support is turned upward, thereby completing the switching between the supine mode and the prone mode, and the different modes are switched according to the examination posture of the patient in the supine position or the prone position, the comfort of the patient during use is improved, and the patient is prevented from moving the head due to discomfort, thereby improving the examination effect.

[0018] Of course, it is not necessary for any product implementing the utility model to achieve all the advantages mentioned above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can also be obtained by those skilled in the art without any creative effort.

[0020] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0021] Figure 2 It is a part of three-dimensional structure schematic view of the utility model;

[0022] Figure 3 It is a part of three-dimensional structure schematic view of the utility model;

[0023] Figure 4 It is a part of three-dimensional structure schematic view of the utility model;

[0024] Figure 5 It is a prone head support three-dimensional structure schematic view of the utility model;

[0025] Figure 6 For the Figure 3 A stereoscopic structure enlarged schematic view of the middle A;

[0026] In the drawings, the component list represented by each reference numeral is as follows:

[0027] 1, adapter plate; 2, scanning bed; 3, conversion assembly; 301, rotating shaft; 302, pin hole; 303, rod hole; 304, latch spring; 305, spring baffle; 306, handle; 307, latch; 308, outer cylinder; 309, T-shaped sliding groove; 4, support frame assembly; 401, supine headrest; 402, supine support spring; 403, prone headrest; 404, prone support spring; 405, placement hole; 5, fixed plate; 6, angle adjustment assembly; 601, angle adjustment sliding groove; 602, screw rod; 603, wedge block; 604, hand wheel; 605, rocking handle. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0029] In the description of the utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner" and the like indicate the orientation or positional relationship, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated components or elements must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0030] Please refer to Figures 1-6 The utility model discloses a brain support frame for head nerve examination, which comprises an adapter plate 1, one end of a scanning bed 2 is rotationally connected to one side of the adapter plate 1, a conversion assembly 3 is arranged on the adapter plate 1 close to the scanning bed 2, a support frame assembly 4 is fixedly arranged on the side of the adapter plate 1 away from the scanning bed 2, a fixed plate 5 is fixedly connected to the side of the adapter plate 1 away from the scanning bed 2, and an angle adjustment assembly 6 is arranged on the fixed plate 5.

[0031] The scanning bed is used for carrying the body of the patient except the head, and the head of the patient is located on the support frame assembly 4, the support frame assembly 4 is used for supporting the front end and the rear end of the head of the patient, the conversion assembly 3 is used for rotating and fixing the support frame assembly 4, and the switching of the carrying function of the support frame assembly 4 to the front end and the rear end of the head of the patient is changed, and the angle adjusting assembly 6 is used for adjusting the angle of the support frame assembly 4 relative to the upper surface of the scanning bed 2.

[0032] In actual use, the patient lies on the scanning bed 2, the conversion assembly 3 is used to drive the support frame assembly 4 to rotate and fix, the support frame assembly 4 is adjusted to the mode required by the patient according to the posture required by the patient in examination, then the patient moves the head to the support frame assembly 4, and the angle adjusting assembly 6 is used to adjust the support frame assembly 4, so that the support frame assembly 4 can be adjusted to a comfortable angle of the patient.

[0033] The utility model discloses a conversion assembly 3 drives support frame assembly 4 to rotate and fix, and the support frame assembly 4 is adjusted to the mode required by the patient, the different mode of the device can be switched according to the examination posture of the patient supine or prone, improves the use experience effect of patient, improves the comfort of patient, and then prevents the patient from moving the head due to discomfort, and improves the effect of examination.

[0034] In one embodiment, for the above-mentioned conversion assembly 3, the conversion assembly 3 includes a rotating shaft 301, one end of the rotating shaft 301 is fixedly connected to one side of the adapter plate 1, the other side of the rotating shaft 301 is rotatably connected to one end of the scanning bed 2, and two groups of pin holes 302 are formed in the end of the scanning bed 2 close to the adapter plate 1.

[0035] In actual use, the rotating shaft 301 is rotated, and then the adapter plate 1 fixedly connected to the rotating shaft 301 is rotated, so that the adapter plate 1 can perform circular motion around the axis of the rotating shaft 301.

[0036] In one embodiment, for the above-mentioned conversion assembly 3, the conversion assembly 3 further comprises two groups of rod holes 303, which are arranged at the two ends of the adapter plate 1, the side of the adapter plate 1 is fixedly connected with the bottom of the pin spring 304 coaxial with the rod hole 303, the inner diameter of the pin spring 304 is slightly larger than the diameter of the rod hole 303, the pin spring 304 is in a stretched state, the top of the pin spring 304 is fixedly connected with the bottom of the spring baffle 305, the top of the spring baffle 305 is fixedly connected with the bottom of the handle 306, the bottom of the spring baffle 305 is fixedly connected with one end of the pin 307, and the pin 307 is arranged inside the pin spring 304, the other end of the pin 307 penetrates the rod hole 303, and the other end of the pin 307 is used for clamping the pin hole 302, the side of the adapter plate 1 is fixedly installed with the outer cylinder 308 coaxial with the pin spring 304, and the inner diameter of the outer cylinder 308 is larger than the outer diameter of the pin spring 304, the side of the outer cylinder 308 is provided with a T-shaped sliding groove 309, and the T-shaped sliding groove 309 penetrates the side of the outer cylinder 308, and the spring baffle 305 is slidingly connected in the T-shaped sliding groove 309.

[0037] In actual use, if it is necessary to change the use mode of the support frame assembly, the handle 306 is pulled to drive the bottom fixedly connected spring baffle 305 to move in the long slot of the T-shaped sliding groove 309, when the spring baffle 305 moves to the short slot end of the T-shaped sliding groove 309, the bottom fixedly connected pin 307 is also moved out of the pin hole 302, then the handle 306 is rotated to drive the bottom fixedly connected spring baffle 305 to rotate, and then the spring baffle 305 is clamped in the short slot of the T-shaped sliding groove 309, then the adapter plate 1 is rotated to rotate half a circle with the rotating shaft 301 as the axis, thereby completing the mode switching of the support frame assembly 4, at this time, the handle 306 is reversely rotated to drive the bottom fixedly connected spring baffle 305 to rotate to the long slot of the T-shaped sliding groove 309, because the two ends of the pin spring 304 are respectively fixedly connected with the bottom of the spring baffle 305 and the side of the adapter plate 1, and the pin spring 304 is always in a stretched state, therefore, when the handle 306 is released, the pin spring 304 restores the deformation compression to drive the spring baffle 305 fixedly connected at one end to move downward, and then the spring baffle 305 drives the bottom fixedly connected pin 307 to move downward to the pin hole 302, until the one end of the pin 307 abuts against the bottom of the pin hole 302 to complete the fixation.

[0038] In one embodiment, for the above-mentioned support frame assembly 4, the support frame assembly 4 comprises a supine headrest 401, one end of the supine headrest 401 is hingedly connected to one end of the adapter plate 1, the bottom of the other end of the supine headrest 401 is fixedly connected to the top of the two groups of supine support springs 402, and the bottom of the two groups of supine support springs 402 is fixedly connected to the side of the fixed plate 5.

[0039] In actual use, when the prone position mode needs to be used, the adapter plate 1 is rotated to drive the fixedly connected fixed plate 5 to rotate. One end of the prone headrest 401 is hingedly connected to one end of the adapter plate 1. Therefore, when the adapter plate 1 is rotated, the prone headrest 401 hingedly connected thereto is rotated, so that the prone headrest 401 is switched to the prone position mode with the front face upward. Since the other end of the prone headrest 401 is fixedly connected to the prone support spring 402, when the prone position mode is switched, the front face is downward, and the prone headrest 401 will not rotate around the hinge due to gravity.

[0040] In an embodiment, for the support frame assembly 4 described above, the support frame assembly 4 further comprises a prone headrest 403. One end of the prone headrest 403 is hingedly connected to one end of the adapter plate 1. The other end of the prone headrest 403 is fixedly connected to the top of two sets of prone support springs 404. The bottom of the two sets of prone support springs 404 is fixedly connected to one side of the fixed plate 5.

[0041] In actual use, when the prone position mode needs to be used, the adapter plate 1 is rotated to drive the fixedly connected fixed plate 5 to rotate. Since one end of the prone headrest 403 is hingedly connected to one end of the adapter plate 1, the adapter plate 1 can drive the prone headrest 403 to rotate, so that the prone headrest 403 is switched to the prone position mode with the front face upward. Since the other end of the prone headrest 403 is fixedly connected to the prone support spring 404, when the prone position mode is switched, the front face is downward, and the prone headrest 403 will not rotate around the hinge due to gravity.

[0042] In an embodiment, for the support frame assembly 4 described above, the recessed portion of the prone headrest 403 is shaped like a human face, which is more suitable for the face of a person. In addition, a face placing hole 405 is formed in the prone headrest 403. The face placing hole 405 penetrates the prone headrest 403 from the upper surface to the lower surface.

[0043] In actual use, when a patient uses the prone position mode for examination, the recessed portion of the prone headrest 403 is shaped like a human face, which is suitable for the face of the patient, and the patient can expose the eyes, nose, and mouth through the face placing hole 405, without affecting the breathing and communication of the patient.

[0044] In one embodiment, for the above-mentioned angle adjusting assembly 6, the angle adjusting slot 601 is arranged in the middle of the fixed plate 5, the middle of one end of the fixed plate 5 is rotationally connected with a screw rod 602, the screw rod 602 penetrates through one end of the fixed plate 5 to the inside of the angle adjusting slot 601, and one end of the screw rod 602 located in the angle adjusting slot 601 is rotationally connected with one end of the angle adjusting slot 601, a part of the screw rod 602 located in the angle adjusting slot 601 is threadedly connected with an angle adjusting wedge 603, the two sides of the wedge 603 are slidingly connected with the inner walls of the angle adjusting slot 601, and one end of the screw rod 602 away from the angle adjusting slot 601 is fixedly installed with a hand wheel 604, and one side of the hand wheel 604 is provided with a handle 605.

[0045] In actual use, when the inclination angle of the supine headstock 401 or the prone headstock 403 needs to be adjusted, the hand wheel 604 on one side is driven to rotate by shaking the handle 605, thereby driving the screw rod 602 fixedly connected on one side to rotate, when the screw rod 602 rotates, the wedge 603 is driven to move along the inner wall of the angle adjusting slot 601, and the wedge 603 is pressed against the bottom of the supine headstock 401 or the prone headstock 403, thereby driving the supine headstock 401 or the prone headstock 403 to rotate around the hinge to complete the angle adjustment.

[0046] According to the technical scheme of the utility model, the handle 306 is pulled to drive the spring baffle 305 fixedly connected to the bottom to move in the long groove of the T-shaped sliding groove 309, when the spring baffle 305 moves to the short groove end of the T-shaped sliding groove 309, the spring baffle 305 drives the movement of the bolt 307 fixedly connected to the bottom out of the pin hole 302, then the handle 306 is rotated to drive the spring baffle 305 fixedly connected to the bottom to rotate, and then the spring baffle 305 is clamped in the short groove of the T-shaped sliding groove 309, then the adapter plate 1 is rotated to rotate half a circle around the rotating shaft 301, so that the supine head support 401 or the prone head support 403 faces upwards, at this time, the handle 306 is reversely rotated to drive the spring baffle 305 fixedly connected to the bottom to rotate into the long groove of the T-shaped sliding groove 309, since the both ends of the bolt spring 304 are fixedly connected to the bottom of the spring baffle 305 and one side of the adapter plate 1 respectively, and the bolt spring 304 is always in a stretched state, when the handle 306 is released, the bolt spring 304 restores the deformation compression to drive the spring baffle 305 fixedly connected to one end to move downwards, then the spring baffle 305 drives the bolt 307 fixedly connected to the bottom to move downwards into the pin hole 302, until one end of the bolt 307 abuts against the bottom of the pin hole 302 to complete the fixation, so that the switching of the supine mode or the prone mode is completed, then the handle 605 is shaken to drive the hand wheel 604 arranged on one side to rotate, then the hand wheel 604 drives the screw rod 602 fixedly connected to one side to rotate, when the screw rod 602 rotates, the wedge block 603 is driven to move along the inner wall of the angle adjusting sliding groove 601 to press the bottom of the supine head support 401 or the prone head support 403 at an angle, then the supine head support 401 or the prone head support 403 rotates around the hinge to complete the angle adjustment, then the patient lies on or crouches on the scanning bed 2, and the patient puts the head into the supine head support 401 or the prone head support 403 to be examined.

[0047] According to the technical scheme, 1, the adapter plate 1 is rotated to rotate half a circle around the rotating shaft 301, so that the supine head support 401 or the prone head support 403 faces upwards, so that the switching of the supine mode or the prone mode is completed, the different modes are switched according to the examination posture of the patient lying on the back or crouching on the ground, the comfort of the patient during use is improved, and the effect of the examination is improved.

[0048] 2, the wedge block 603 is moved along the inner wall of the angle adjusting sliding groove 601 to press the bottom of the supine head support 401 or the prone head support 403 at an angle, then the supine head support 401 or the prone head support 403 rotates around the hinge to complete the angle adjustment, so that the doctor can examine the head at a certain angle, and the practicability of the device is improved.

[0049] In the description of the application, references to "one embodiment", "an example", "certain examples" etc. mean that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. The appearances of the phrases "in one embodiment", "an example" or "certain examples" in various places in the specification are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0050] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all of the details of the application, nor limit the application to the specific embodiments described. Obviously, many modifications and variations of the application can be made in light of the teachings above. The embodiments are chosen and described in order to best explain the principles of the application and its practical application, thus enabling others skilled in the art to best utilize the application. The application is defined solely by the claims appended hereto and equivalents thereof, regardless and notwithstanding any limitations introduced by the description.

Claims

1. A brain support frame for cranial nerve examination comprising an adapter plate (1), characterized in that, One side of the adapter plate (1) is rotatably connected to one end of the scanning bed (2), and the side of the adapter plate (1) close to the scanning bed (2) is provided with a conversion assembly (3); the side of the adapter plate (1) away from the scanning bed (2) is fixedly provided with a support frame assembly (4); the side of the adapter plate (1) away from the scanning bed (2) is fixedly connected with a fixed plate (5); and the fixed plate (5) is provided with an angle adjusting assembly (6). The scanning bed is used to carry the body of a patient except the head, and the head of the patient is located on the support frame assembly (4); the support frame assembly (4) is used to support the front end and the rear end of the head of the patient; the conversion assembly (3) is used to rotate and fix the support frame assembly (4) to change the carrying function of the support frame assembly (4) for the front end and the rear end of the head of the patient; and the angle adjusting assembly (6) is used to adjust the angle of the support frame assembly (4) relative to the upper surface of the scanning bed (2).

2. The head support for neurologic examination of the head according to claim 1, characterized in that The conversion assembly (3) comprises a rotating shaft (301), one end of the rotating shaft (301) is fixedly connected to one side of the adapter plate (1), and the other side of the rotating shaft (301) is rotatably connected to one end of the scanning bed (2); and two groups of pin holes (302) are formed in the end of the scanning bed (2) close to the adapter plate (1).

3. The head support for neurologic examination of the head according to claim 2, characterized in that The conversion assembly (3) further comprises two groups of rod holes (303), the rod holes (303) are formed in the two ends of the adapter plate (1); the bottom of a pin spring (304) coaxial with the rod holes (303) is fixedly connected to one side of the adapter plate (1); the inner diameter of the pin spring (304) is slightly larger than the diameter of the rod hole (303); the pin spring (304) is in a stretched state; the bottom of a spring baffle (305) is fixedly connected to the top of the pin spring (304); the bottom of a handle (306) is fixedly connected to the top of the spring baffle (305); the bottom of a pin (307) is fixedly connected to one end of the spring baffle (305); the pin (307) is arranged in the pin spring (304); the other end of the pin (307) penetrates through the rod hole (303); the other end of the pin (307) is used to clamp the pin hole (302); an outer cylinder (308) coaxial with the pin spring (304) is fixedly installed on one side of the adapter plate (1); the inner diameter of the outer cylinder (308) is larger than the outer diameter of the pin spring (304); a T-shaped sliding groove (309) is formed in the side of the outer cylinder (308); and the spring baffle (305) is slidably connected in the T-shaped sliding groove (309).

4. The head support according to claim 3, wherein The support frame assembly (4) comprises a supine headrest (401), one end of the supine headrest (401) is hingedly connected to one end of the adapter plate (1), and the bottom of the other end of the supine headrest (401) is fixedly connected to the top of two groups of supine support springs (402); and the bottom of the two groups of supine support springs (402) is fixedly connected to one side of the fixed plate (5).

5. The head support according to claim 4, wherein The support frame assembly (4) further comprises a prone head rest (403), one end of which is hingedly connected to one end of the adapter plate (1), and the other end of which is fixedly connected to the top of two sets of prone support springs (404) at the bottom, and the bottom of the two sets of prone support springs (404) is fixedly connected to one side of the fixed plate (5).

6. The head support for neurologic examination of the head according to claim 5, characterized in that The recessed part of the prone head rest (403) is shaped according to the face of a person, and a face hole (405) is formed in the prone head rest (403) and penetrates the prone head rest (403).

7. The head support of claim 5, wherein the head support is configured to be used in a cranial nerve examination. The angle adjusting assembly (6) comprises an angle adjusting sliding groove (601) formed in the middle of the fixed plate (5), a screw rod (602) rotatably connected to the middle of one end of the fixed plate (5), the screw rod (602) penetrating one end of the fixed plate (5) into the angle adjusting sliding groove (601), one end of the screw rod (602) in the angle adjusting sliding groove (601) being rotatably connected to one end of the angle adjusting sliding groove (601), a part of the screw rod (602) in the angle adjusting sliding groove (601) being threadedly connected to an angle adjusting wedge block (603), the angle adjusting wedge block (603) being slidably connected to the inner walls of the angle adjusting sliding groove (601) on both sides, and a hand wheel (604) fixedly installed on the end of the screw rod (602) away from the angle adjusting sliding groove (601), one side of the hand wheel (604) being provided with a rocking handle (605).

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