CN215277489U

CN215277489U - Be used for paediatrics medicine grinding device

Info

Publication number: CN215277489U
Application number: CN202121450542.0U
Authority: CN
Inventors: 张晓鸥
Original assignee: Individual
Current assignee: People's Hospital Of Rugao(rugao Red Cross Hospital)
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-12-24
Anticipated expiration: 2031-06-29

Abstract

The utility model discloses a medicine grinding device for pediatrics, which comprises a grinding box, wherein the top of the grinding box is fixedly connected with an annular plate, the inner wall of the annular plate is provided with a telescopic rod, the end part of the telescopic rod is connected with a clamping plate, and the outer wall of the telescopic rod is nested with a buffer spring, the utility model not only facilitates the disassembly and assembly between the grinding box and a first cover body by a split mode between the grinding box and the first cover body by a user, has simple operation, but also facilitates the use of the device by the user, is small and portable, can be used for processing medicines under different environments, does not need other energy operation, is manually stressed, improves the practicability of the device, can be used for grinding medicines into powder according to actual needs, is convenient for being integrated with liquid for administration or being divided into a plurality of equal parts for convenient control of the dosage of children, or pounded into granules for easy administration.

Description

Be used for paediatrics medicine grinding device

Technical Field

The utility model relates to a medical treatment medicine correlation technique field specifically is a be used for paediatrics medicine grinding device.

Background

Paediatrics is the health and sanitary problem that relates to children and teenagers period all belongs to paediatrics scope, need use the medicine when treating paediatrics patient, and the medicine is used for preventing, treats the disease, and the effectual physiology of regulation people is functional, and stipulates that has the substance of indication or function indication, usage and quantity, but because paediatrics patient age is less, is in the developmental stage, can not eat the medicine with adult's the same all, and also there is the difference in the quantity of medicament, needs grind or cut apart the medicine to use paediatrics medicine grinding device.

But paediatrics medicine grinding device that uses at present often is heavier and bulky, when inconvenient carrying and use, need use the energy source to drive it, and is comparatively troublesome to current paediatrics medicine grinding device function is comparatively single, can not be according to actual need, come to cut apart the medicine, smash or grind into powdered, makes the practicality of device lower.

To this end, a grinding device for paediatric drugs is proposed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be used for paediatrics medicine grinding device, the paediatrics medicine grinding device who uses at present, often heavier and the volume is great, when inconvenient carrying and using, need use the energy to drive it, it is comparatively troublesome to current paediatrics medicine grinding device function is comparatively single, can not be according to actual need, come to cut apart the medicine, smash or grind into powdered, makes the practicality of device lower.

In order to achieve the above object, the utility model provides a following technical scheme: a grinding apparatus for pediatric drugs comprises a grinding box;

the grinding box is characterized in that an annular plate is fixedly connected to the top of the grinding box, a telescopic rod is arranged on the inner wall of the annular plate, a clamping plate is connected to the end of the telescopic rod, a buffer spring is nested on the outer wall of the telescopic rod, the end of the buffer spring is connected to the clamping plate, the other end of the buffer spring is connected to the inner wall of the annular plate, a pull rope is connected to the clamping plate, a wire path is formed in the grinding box, a pull ring is connected to the end of the pull rope through the wire path, a first cover body is connected to the outer wall of the grinding box, a first through groove is formed in the top of the first cover body, a dividing rod is arranged inside the first through groove, the upper end of the dividing rod penetrates through the first through groove and is connected with a pressing plate, a limiting plate is fixedly connected to the dividing rod, a first return spring is connected to the bottom of the limiting plate, and the lower end of the first return spring is connected to the inner wall of the first through groove, the grinding box is characterized in that a hinge is arranged on one side of the bottom of the grinding box, a second cover body is connected onto the hinge, a second through groove is formed in the bottom of the second cover body, a clamping block is fixedly connected to the inner wall of the second through groove, a grinding mechanism is arranged in the second through groove, a placing groove is formed in the bottom of the grinding box, the end portion of the grinding mechanism is located inside the placing groove, a conveying pipeline is connected to the bottom of the placing groove, the end portion of the conveying pipeline penetrates through the grinding box and is connected with a medicine discharging port, a valve is installed on the medicine discharging port, and a filter screen plate is arranged at the end portion of the conveying pipeline.

Preferably, be bolted connection between telescopic link and the splint, and splint have two sets ofly about the central axis symmetrical arrangement of annular plate, annular plate and splint pass through the telescopic link and constitute extending structure.

Preferably, the first cover body is designed into a concave structure, the inner wall surface of the first cover body is provided with threads, and the first cover body and the grinding box are in threaded connection.

Preferably, the end part of the dividing rod is designed into a cross-shaped structure, and the dividing rod is fixedly connected with the pressing plate.

Preferably, the second cover body forms a rotating structure through a hinge and a grinding box.

Preferably, the fixture block is designed to be of an annular structure, and the fixture block is fixedly connected with the second through groove.

Preferably, grind mechanism includes urceolus, interior pole, first annular, crown plate, handspike, grinding head, second annular and second reset spring, and the inside of urceolus is provided with interior pole, first annular has been seted up to the inner wall of urceolus, fixedly connected with crown plate on the interior pole, the crown plate is located the inside of first annular, the upper end of interior pole is run through the urceolus and is connected with the handspike, the lower extreme of interior pole is connected with the grinding head, and the grinding head is located the inside of standing groove, the second annular has been seted up to the outer wall of urceolus, the fixture block is located the inside of second annular, be connected with second reset spring on the fixture block, second reset spring's lower extreme is connected in the inner wall bottom of second annular, interior pole and crown plate constitute "ten" style of calligraphy structure, and crown plate and first annular constitute the sliding construction of block formula.

Preferably, the grinding head is designed to be of an arc-shaped structure, the outer wall of the grinding head is provided with salient points, and the grinding head and the inner rod are connected through bolts.

Preferably, the inner wall of the second annular groove and the end part of the clamping block are mutually attached, and the second annular groove and the clamping block form a clamping type sliding structure.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses, through setting up the mode that adopts the split between grinding case and the first lid, not only convenient to use person is to grinding the dismouting between case and the first lid, and easy operation, convenient to use person who does is to the use of device, simultaneously small and exquisite light, and is convenient for carry, thereby all can use the device to handle the medicine under different environment, do not need other energy function simultaneously, artificial atress can, the practicality of device has been promoted, simultaneously can be according to actual need, come to grind into likepowder to the medicine, it takes or cuts apart into several and makes things convenient for the control to the children's quantity of equal parts to be convenient for to merge into liquid, perhaps smash into the graininess, be convenient for swallow.

2. The utility model discloses, through setting up the annular slab, the telescopic link, splint, buffer spring, the stay cord, the line way, the pull ring, mutually support of parts such as dividing pole and clamp plate, make the device, can fix the medicine of equidimension specification not, the lower extreme design of dividing the pole simultaneously is cross structure, press down the atress through the manpower in the pole of cutting apart, can be with fixed medicine, even be cut into the same partition, the person of facilitating the use is to the control of dose and cut apart, thereby make things convenient for children to use medicine, and smash into the graininess when needs are smashed into pieces to the medicine, reciprocal press down the atress in the pole of cutting apart can, the medicine after will cutting apart through the cross tip of dividing the pole is strikeed to pieces many times, thereby the practicality of device has been promoted.

3. The utility model discloses, through setting up grinding mechanism for the device can carry out the high-speed grinding to the medicine and become the likepowder, through the arc structural design of grinding head and standing groove, makes that the medicine can be abundant by the extrusion, carries powdered medicine to pipeline in through the filtration of filtering the otter board, thereby arranges the medicine mouth and discharges, has strengthened the practicality of device.

Drawings

Fig. 1 is a schematic view of the front cross-sectional structure of the present invention;

FIG. 2 is a schematic top view of the ring plate of the present invention;

FIG. 3 is a schematic view of the structure of the end of the cutting rod in a bottom view;

fig. 4 is a schematic view of the structure of the grinding mechanism of the present invention.

In the figure: 1. grinding a box; 2. an annular plate; 3. a telescopic rod; 4. a splint; 5. a buffer spring; 6. pulling a rope; 7. a wire way; 8. a pull ring; 9. a first cover body; 10. a first through groove; 11. a dividing rod; 12. pressing a plate; 13. a limiting plate; 14. a first return spring; 15. a hinge; 16. a second cover body; 17. a second through groove; 18. a clamping block; 19. a grinding mechanism; 1901. an outer cylinder; 1902. an inner rod; 1903. a first ring groove; 1904. a ring plate; 1905. a handle; 1906. a grinding head; 1907. a second ring groove; 1908. a second return spring; 20. a placement groove; 21. a delivery conduit; 22. a filter screen plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a grinding apparatus for pediatric drugs, as shown in fig. 1 and 4, comprising a grinding tank 1;

the top of the grinding box 1 is fixedly connected with an annular plate 2, the inner wall of the annular plate 2 is provided with a telescopic rod 3, the end part of the telescopic rod 3 is connected with a clamping plate 4, the outer wall of the telescopic rod 3 is nested with a buffer spring 5, the end part of the buffer spring 5 is connected with the clamping plate 4, the other end of the buffer spring 5 is connected with the inner wall of the annular plate 2, the clamping plate 4 is connected with a pull rope 6, the grinding box 1 is provided with a wire passage 7, the end part of the pull rope 6 penetrates through the wire passage 7 and is connected with a pull ring 8, the outer wall of the grinding box 1 is connected with a first cover body 9, the top of the first cover body 9 is provided with a first through groove 10, a dividing rod 11 is arranged inside the first through groove 10, the upper end of the dividing rod 11 penetrates through the first through groove 10 and is connected with a pressing plate 12, the dividing rod 11 is fixedly connected with a limiting plate 13, the bottom of the limiting plate 13 is connected with a first return spring 14, the lower end of the first return spring 14 is connected with the inner wall of the first through groove 10, one side of the bottom of the grinding box 1 is provided with a hinge 15, the hinge 15 is connected with a second cover body 16, a second through groove 17 is formed in the bottom of the second cover body 16, a fixture block 18 is fixedly connected to the inner wall of the second through groove 17, a grinding mechanism 19 is arranged in the second through groove 17, a placing groove 20 is formed in the bottom of the grinding box 1, the end portion of the grinding mechanism 19 is located inside the placing groove 20, the bottom of the placing groove 20 is connected with a conveying pipeline 21, the end portion of the conveying pipeline 21 penetrates through the grinding box 1 and is connected with a medicine discharging port, a valve is installed on the medicine discharging port, and a filter screen plate 22 is arranged at the end portion of the conveying pipeline 21.

Through adopting the above-mentioned scheme, the mode of adopting the split between case 1 and the first lid 9 is ground in the setting, not only convenient to use person is to grinding the dismouting between case 1 and the first lid 9, convenient to use person to the use of device does, simultaneously small and exquisite light, convenient to use person carries, thereby all can use the device to handle the medicine under different environment, do not need other energy function drives simultaneously, artificially atress can drive arrangement, the practicality of device has been promoted, simultaneously can be according to actual need, come to grind into likepowder to the medicine, it conveniently makes things convenient for the control to children's dose to merge into liquid and take or cut apart into several equal divisions, perhaps smash into the graininess, be convenient for swallow.

Specifically, as shown in fig. 1 and 2, the telescopic rods 3 and the clamping plates 4 are connected through bolts, two groups of the clamping plates 4 are symmetrically arranged about the central axis of the annular plate 2, and the annular plate 2 and the clamping plates 4 form a telescopic structure through the telescopic rods 3.

Through adopting above-mentioned scheme for through telescopic link 3 and buffer spring 5's cooperation, promote splint 4 and carry out quick fixed and spacing to the medicine of equidimension not, thereby be convenient for to the cutting apart of medicine.

Specifically, as shown in fig. 1, the first cover 9 is designed to have a concave structure, the inner wall surface of the first cover 9 is provided with threads, and the first cover 9 and the grinding box 1 are in threaded connection.

Through adopting above-mentioned scheme for can be through rotatory, quick with first lid 9 and grinding case 1 split, thereby the convenience is to putting and taking of medicine, the convenient clearance to the device simultaneously.

Specifically, as shown in fig. 3, the end of the dividing rod 11 is designed to be a cross-shaped structure, and the dividing rod 11 and the pressing plate 12 are fixedly connected.

Through adopting above-mentioned scheme for can be with the even several equal divisions of medicine through dividing pole 11, the person of facilitating the use takes to the control of dose, convenient to use person, thereby has promoted the practicality of device, can pound the medicine into the pieces to pieces into the graininess through strikeing repeatedly simultaneously, and the person of facilitating the use swallows.

Specifically, as shown in fig. 1, second cover 16 is configured to rotate via hinge 15 and grinding box 1.

Through adopting above-mentioned scheme for through rotatory hinge 15, can be quick open or be closed second lid 16 and grinding case 1, thereby convenient to use person operates, conveniently to putting of medicine and the clearance to the device.

Specifically, as shown in fig. 1 and 3, the latch 18 is designed to be a ring structure, and the latch 18 and the second through groove 17 are fixedly connected.

By adopting the above scheme, the fixture block 18 can support the grinding mechanism 19 and limit the grinding mechanism 19, so as to prevent the grinding mechanism 19 from moving and separating from the second cover body 16.

Specifically, as shown in fig. 1 and 3, the grinding mechanism 19 includes an outer cylinder 1901, an inner rod 1902, a first ring groove 1903, a ring plate 1904, a hand lever 1905, a grinding head 1906, a second ring groove 1907 and a second return spring 1908, the inner rod 1902 is disposed inside the outer cylinder 1901, the inner wall of the outer cylinder 1901 is opened with the first ring groove 1903, the inner rod 1902 is fixedly connected with the ring plate 1904, the ring plate 1904 is disposed inside the first ring groove 1903, the upper end of the inner rod 1902 penetrates through the outer cylinder 1901 and is connected with the hand lever 1905, the lower end of the inner rod 1902 is connected with the grinding head 1906, the grinding head 1906 is located inside the placing groove 20, a second annular groove 1907 is formed in the outer wall of the outer cylinder 1901, the fixture block 18 is located inside the second annular groove 1907, a second return spring 1908 is connected to the fixture block 18, the lower end of the second return spring 1908 is connected to the bottom of the inner wall of the second annular groove 1907, the inner rod 1902 and the ring plate 1904 form a cross-shaped structure, and the ring plate 1904 and the first annular groove 1903 form a clamping type sliding structure.

Through adopting above-mentioned scheme for the device can carry out the high-speed grinding to powder to the medicine, and easy operation does not need other energy drives, thereby has promoted the practicality of device, simultaneously convenient putting and observation and the clearance to the device to the medicine.

Specifically, as shown in fig. 1, the grinding head 1906 is designed to have an arc-shaped structure, the outer wall of the grinding head 1906 is provided with protruding points, and the grinding head 1906 and the inner rod 1902 are connected by bolts.

Through adopting above-mentioned scheme for pressing handle bar 1905 and making interior pole 1902 promote the grinding head 1906 and remove to the standing groove 20, extrude into powdered to the medicine, can be better extrude the medicine through the bump on the outer wall of grinding head 1906.

Specifically, as shown in fig. 1, an inner wall of the second annular groove 1907 and an end portion of the latch 18 are attached to each other, and the second annular groove 1907 and the latch 18 constitute a snap-fit sliding structure.

By adopting the above scheme, the second cover body 16 can support the grinding mechanism 19 and limit the grinding mechanism 19 at the same time through the matching of the fixture block 18 and the second ring groove 1907, and the grinding mechanism 19 can move up and down through the second through groove 17 through the matching of the second ring groove 1907, the fixture block 18 and the second return spring 1908.

The working principle is as follows: firstly, when the medicine for children needs to be cut apart, one end of a grinding box 1 connected with a first cover body 9 is placed upwards, a user holds the grinding box 1, the first cover body 9 is rotated anticlockwise by the other hand, the grinding box 1 and the first cover body 9 are separated and opened, a pull ring 8 is pulled, a pull rope 6 is enabled to move outwards through a wire channel 7, meanwhile, a clamping plate 4 is pulled to be close to the inner wall of a ring-shaped plate 2, a buffer spring 5 is compressed under stress, a telescopic rod 3 drives one clamping plate 4 to be separated from the other clamping plate 4, the medicine is placed at the center of the ring-shaped plate 2, the pull ring 8 is released, the buffer spring 5 is separated from constraint, the telescopic rod 3 and the clamping plate 4 are pushed to reset, the two clamping plates 4 clamp the medicine, the two clamping plates 4 are pushed to move towards two sides according to the size of the medicine, the buffer spring 5 is compressed under stress again, and is pushed by the reverse thrust of the buffer spring 5, the medicine is fully and fixedly clamped by the two clamping plates 4, so that the medicine is conveniently divided, a user rotates the first cover body 9 clockwise to install the first cover body 9 and the grinding box 1, the user presses the pressing plate 12 to push the dividing rod 11 to move downwards through the first through groove 10, the dividing rod 11 moves downwards at the same time to drive the limiting plate 13 to move downwards in the first through groove 10, the first reset spring 14 is stressed and compressed, the lower end of the dividing rod 11 is designed into a cross structure, the medicine can be impacted and divided into a plurality of equal parts, the equal parts are convenient for the user to control the dosage of the medicine, the practicability of the device is enhanced, after the cutting is completed, the pressing plate 12 is loosened to separate the first reset spring 14, the limiting plate 13 is pushed to drive the dividing rod 11 to move upwards to reset, the user rotates the first cover body 9 anticlockwise at the moment, so that the grinding box 1 and the first cover body 9 are separated again, the split medicine is taken out, and when the children medicine needs to be mashed, the pressing plate 12 is pressed for multiple times, so that the medicine is impacted into particles by the lower end of the splitting rod 11 for multiple times, and the purpose of mashing is achieved;

when powder treatment is required to be performed on children's medicines, one end of the grinding box 1, which is connected with the second cover body 16, is placed upwards, the second cover body 16 is rotated forwards, the second cover body 16 and the grinding box 1 are rotated and opened through the hinge 15, the medicines are placed in the placement groove 20, the second cover body 16 is rotated reversely, the second cover body 16 and the grinding box 1 are closed, the hand lever 1905 is pressed downwards, the inner rod 1902 is clamped with the first ring groove 1903 through the ring plate 1904, the outer cylinder 1901 is driven to move downwards through the second through groove 17, the inner rod 1902 pushes the grinding head 1906 to move towards the placement groove 20 through the matching of the fixture block 18 in the second through groove 17 and the second ring groove 1907 on the outer wall of the outer cylinder 1901, when the outer cylinder 1901 moves downwards through the fixture block 18, the second return spring 1908 is stressed and compressed, the inner rod 1902 pushes the grinding head 1906 to move towards the placement groove 20 to impact the medicines to grind the medicines into powder, and the hand lever 1905 is rotated, make interior pole 1902 drive grinding head 1906 rotatory, it is more abundant that the granule design on grinding head 1906 makes the medicine rolled, it more is favorable to rolling to the medicine to rotate, thereby fully roll into the powder to the medicine, loosen handle bar 1905, make second reset spring 1908 break away from the constraint, promote urceolus 1901 and reset, powdered medicine filters through filter screen plate 22 and enters into pipeline 21 in, if still there is granular medicine, so reciprocal several times, thereby reach the mesh of grinding into powder, when whole medicine powder passes through pipeline 21, slope grinding case 1, the mouth or the container of arranging the medicine mouth and aiming at children, open the valve, the slope makes the powder derive can, this is exactly the theory of operation that is used for paediatrics medicine grinding device.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A be used for paediatrics medicine grinding device which characterized in that: comprises a grinding box (1);

the top of the grinding box (1) is fixedly connected with an annular plate (2), the inner wall of the annular plate (2) is provided with a telescopic rod (3), the end part of the telescopic rod (3) is connected with a clamping plate (4), the outer wall of the telescopic rod (3) is nested with a buffer spring (5), the end part of the buffer spring (5) is connected with the clamping plate (4), the other end of the buffer spring (5) is connected with the inner wall of the annular plate (2), the clamping plate (4) is connected with a pull rope (6), the grinding box (1) is provided with a wire way (7), the end part of the pull rope (6) penetrates through the wire way (7) and is connected with a pull ring (8), the outer wall of the grinding box (1) is connected with a first cover body (9), the top of the first cover body (9) is provided with a first through groove (10), and a dividing rod (11) is arranged inside the first through groove (10), the upper end of the dividing rod (11) penetrates through the first through groove (10) to be connected with a pressing plate (12), the dividing rod (11) is fixedly connected with a limiting plate (13), the bottom of the limiting plate (13) is connected with a first reset spring (14), the lower end of the first reset spring (14) is connected with the inner wall of the first through groove (10), one side of the bottom of the grinding box (1) is provided with a hinge (15), the hinge (15) is connected with a second cover body (16), the bottom of the second cover body (16) is provided with a second through groove (17), the inner wall of the second through groove (17) is fixedly connected with a clamping block (18), a grinding mechanism (19) is arranged in the second through groove (17), the bottom of the grinding box (1) is provided with a placing groove (20), the end part of the grinding mechanism (19) is positioned in the placing groove (20), and the bottom of the placing groove (20) is connected with a conveying pipeline (21), the end part of the conveying pipeline (21) penetrates through the grinding box (1) to be connected with a medicine discharge port, a valve is installed on the medicine discharge port, and a filter screen plate (22) is arranged at the end part of the conveying pipeline (21).

2. A grinding apparatus for paediatric drugs according to claim 1, characterized in that: be bolted connection between telescopic link (3) and splint (4), and splint (4) have two sets ofly about the center pin symmetrical arrangement of annular plate (2), annular plate (2) and splint (4) constitute extending structure through telescopic link (3).

3. A grinding apparatus for paediatric drugs according to claim 1, characterized in that: the first cover body (9) is designed to be of a concave structure, threads are arranged on the surface of the inner wall of the first cover body (9), and the first cover body (9) is in threaded connection with the grinding box (1).

4. A grinding apparatus for paediatric drugs according to claim 1, characterized in that: the end part of the dividing rod (11) is designed to be in a cross-shaped structure, and the dividing rod (11) is fixedly connected with the pressing plate (12).

5. A grinding apparatus for paediatric drugs according to claim 1, characterized in that: the second cover body (16) forms a rotating structure with the grinding box (1) through a hinge (15).

6. A grinding apparatus for paediatric drugs according to claim 1, characterized in that: the clamping block (18) is designed to be of an annular structure, and the clamping block (18) is fixedly connected with the second through groove (17).

7. A grinding apparatus for paediatric drugs according to claim 1, characterized in that: the grinding mechanism (19) comprises an outer cylinder (1901), an inner rod (1902), a first ring groove (1903), a ring plate (1904), a hand lever (1905), a grinding head (1906), a second ring groove (1907) and a second return spring (1908), the inner rod (1902) is arranged inside the outer cylinder (1901), the first ring groove (1903) is formed in the inner wall of the outer cylinder (1901), the ring plate (1904) is fixedly connected to the inner rod (1902), the ring plate (1904) is located inside the first ring groove (1903), the hand lever (1905) is connected to the upper end of the inner rod (1902) through the outer cylinder (1901), the grinding head (1906) is connected to the lower end of the inner rod (1902), the grinding head (1906) is located inside the placing groove (20), the second ring groove (1907) is formed in the outer wall of the outer cylinder (1901), the fixture block (18) is located inside the second ring groove (1907), and the second return spring (1908) is connected to the fixture block (18), the lower end of the second return spring (1908) is connected to the bottom of the inner wall of the second ring groove (1907), the inner rod (1902) and the ring plate (1904) form a cross-shaped structure, and the ring plate (1904) and the first ring groove (1903) form a clamping type sliding structure.

8. A grinding apparatus for paediatric drugs according to claim 7, characterized in that: the grinding head (1906) is designed to be of an arc-shaped structure, salient points are arranged on the outer wall of the grinding head (1906), and the grinding head (1906) is connected with the inner rod (1902) through bolts.

9. A grinding apparatus for paediatric drugs according to claim 7, characterized in that: the inner wall of the second ring groove (1907) and the end part of the fixture block (18) are attached to each other, and the second ring groove (1907) and the fixture block (18) form a clamping type sliding structure.