Veterinary syringe destruction device

Abstract

The present invention belongs to the technical field of syringe destruction, and in particular, is a veterinary syringe destruction device. To address the problem that the incineration destruction method in the prior art pollutes the environment and is incomplete, the following solution is proposed, comprising a baking oven having an overall horizontal tubular structure, with two symmetrical support plates fixed near the middle of the circumferential outer wall of the baking oven. The invention is characterized in that side blocking plates 1 and 2, symmetrical and disc-shaped, are respectively provided at each end of the baking oven. The present invention can initially heat and soften waste products with needle tips, and after the iron needle tips fall off, the main sprocket is started to rotate, slowly removing the adsorbed needle tips for unified collection and processing. At this point, the needle tips and plastic can be separated, and the plastic need not be incinerated; it only needs to be heated and softened to a molten state, making it easier to reduce its volume for collection and undergo high-temperature disinfection.

Description

Technical Field

[0001] The present invention relates to the technical field of syringe destruction, in particular to a veterinary syringe destruction device. Background Art

[0002] Veterinary syringes are common medical devices widely used in disease diagnosis, treatment, and vaccination. However, with the increase in medical activities, the disposal of discarded syringes has become a significant issue. Discarded syringes not only pose a risk of environmental pollution but can also serve as a vector for disease transmission. Improper syringe handling can carry pathogens such as blood, viruses, or bacteria, becoming a source of cross-infection. For example, carelessly discarding used needles and syringes can cause puncture wounds, leading to infection with blood-borne diseases.

[0003] Traditional discarded syringes usually need to be treated by incineration or high-temperature and high-pressure sterilization. These treatment methods may lead to energy consumption and environmental pollution, especially in areas with scarce medical resources. Existing treatment devices directly melt the needles and syringes, leaving the iron needle tips for collection. This method requires burning the plastic, causing a large amount of black smoke and environmental pollution, and is not conducive to recycling. Therefore, we propose a new type of destruction device that can avoid burning, reduce environmental pollution and can also be recycled. Summary of the Invention

[0004] In order to solve the technical problem that the incineration destruction method in the prior art pollutes the environment and is not completely destroyed, the present invention adopts the following technical solution:

[0005] 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut.

[0006] Preferably, the annular inner wall of the annular groove is polished to form heat accumulation, thereby increasing the heating effect on the needle with plastic inside.

[0007] Preferably, the baking oven is provided with a feeding slot 1 above one end of the side blocking plate 1, and a U-shaped notch that can overlap with the feeding slot 1 is provided near the top of the flared edge of the side blocking plate 1; a support column extending to the center position is fixed on the circumferential inner wall of the baking oven below the feeding slot 1, and a slip ring is reserved at the top of the support column, and a guide push rod is slidably connected in the middle of the slip ring, and the end of the guide push rod is fixed to the side of the side blocking plate 1; the guide push rod and the side blocking plate 2 facing away from each other are fixed with an electric heater that is compatible with the heating coil on that side; when loading, the side blocking plate 1 only needs to be withdrawn a certain distance to expose the loading position.

[0008] Preferably, the distance between the side blocking plate 1 and the side blocking plate 2 is equal to 1.1-1.2 times the length of the needle tip, and a fixed table is fixed to the circumferential outer wall of the baking oven near the bottom end, and a vibrator is fixed to the surface of the fixed table by screws.

[0009] Preferably, a discharge port is reserved near the bottom end of the circumferential outer wall of the baking oven, and a curved arc-shaped hinged plate is hinged at the edge of the circumferential outer wall of the baking oven near the discharge port, and a sealing plug cover is fixed at one end of the arc-shaped hinged plate near the discharge port; an electric push rod extending horizontally toward the middle is inserted at the bottom end of the support plate near one side of the arc-shaped hinged plate, and a trapezoidal push block is fixed at the end of the extension rod of the electric push rod, and the inclined surface of the trapezoidal push block is in close contact with the lower surface of the arc-shaped hinged plate. Through the set trapezoidal push block, the sealing plug cover can be tightened and loosened by its own horizontal movement, which is convenient to operate, has good sealing performance, and good operability.

[0010] Preferably, the lower surface of the trapezoidal push block is higher than the plane of the bottom of the support plate, ensuring that a device can be used to prevent material from being connected at the bottom after discharge; the circumferential outer wall of the side blocking plate 2 is threaded, and the circumferential inner wall of one end of the baking oven close to the side blocking plate 2 is threaded and compatible with the thread, making the disassembly and assembly of the side blocking plate 2 more convenient and facilitating later cleaning.

[0011] Preferably, the circumferential outer wall of the baking oven is provided with two symmetrical transmission belt inlet and outlet holes near the top that are adapted to the cross-sectional shape of the conveyor chain; a roller frame is fixed to the bottom end of the support hanger, and the two rollers are rotatably connected to the two ends of the roller frame, the axes of the two rollers are parallel to each other and at the same height, and the axes of the rollers are parallel to the axis of the main sprocket, and the main sprocket is located directly above the middle of the two rollers; two symmetrical bearing seats are fixed to the top of the support hanger, and symmetrical boss sliders are respectively fixed on the opposite sides of the two bearing seats, and the two boss sliders are respectively slidably connected to the corresponding groove-shaped slide rails; a through-hole is provided on the outer wall of the baking oven for the support hanger to slide up and down near the top; the support hanger can carry the conveyor chain and the magnet strip embedded therein to move upward away from the high-temperature zone and the raw material zone during the baking and softening process, and then descend for adsorption and classification after the plastic melts and the overall volume becomes smaller.

[0012] Preferably, coaxial roller heads are reserved at both ends of the main sprocket, and a folding supporting plate is fixed between the top ends of the two support plates near the rear side of the device, and two symmetrical shaft rod frames are fixed on the top ends of the folding supporting plate, and the same lifting rod with an overall H-shaped structure is rotatably connected between the two shaft rod frames, and the lifting rod includes two side strips parallel to each other, and the end of the side strips close to the main sprocket is provided with a strip hole adapted to the diameter of the roller head; an arc plate is fixed to the middle of the end of the lifting rod away from the main sprocket, and the center of the arc plate falls on the rotating shaft, a pull rope is fixed to the top end of the arc plate, and a vertically downward electric push rod 2 is fixed to the bottom end of the pull rope; when it is necessary to control the up and down movement of the overall conveying chain, it is only necessary to control the extension rod of the electric push rod 2 to extend and retract.

[0013] Preferably, the side of the magnet bar away from the support hanger is flush with the surface of the conveyor chain, and the sides of the two support plates are respectively provided with mutually symmetrical oblique bar holes near the top corners of the front side, and the same oblique sliding bar is slidably connected between the two oblique bar holes, and the same discharging scraper is fixed to the top of the oblique sliding bar, and the top of the discharging scraper is against the surface of the conveyor chain; the needle tip adsorbed on the surface of the magnet bar can be quickly scraped off.

[0014] Preferably, a hexagonal nut is welded to the upper surface of one end of the inclined slide bar, and a positioning nut is screwed into the hexagonal nut.

[0015] The beneficial effects of the present invention are:

[0016] 1. By setting up parallel magnet bars on the conveyor chain, the waste with needle tips can be heated and softened at the beginning. After the iron needle tips fall off, the main sprocket is started to rotate, and the adsorbed needle tips can be slowly taken out for unified collection and treatment. At this time, the separation of the needle tips and the plastic can be completed, and there is no need to incinerate the plastic. It only needs to be heated and softened into a molten state, which is convenient for reducing the volume for collection and undergoing high-temperature disinfection.

[0017] 2. By setting up a vibrator and cooperating with two annular grooves with a truncated cone-shaped cross-section, the positions of the needle tips remaining after melting can all be aligned and parallel to each other, that is, the direction of the needle tips is parallel to the axis of the baking oven.

[0018] 3. By setting up a support hanger that can move up and down, the support hanger carrying the conveyor chain and the magnet strip embedded in it can move upward away from the high temperature area and raw material area during the baking and softening process, and then descend for adsorption and classification after the plastic melts and the overall volume becomes smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the rear side upward perspective structure of the present invention;

[0021] Figure 3 It is the front view of the present invention;

[0022] Figure 4 It is a side view of the present invention;

[0023] Figure 5 For the present invention Figure 3 Sectional view along line AA;

[0024] Figure 6 For the present invention Figure 4 Cross-sectional view along line BB;

[0025] Figure 7 This is an assembly diagram of the discharging scraper of the present invention;

[0026] Figure 8 Schematic diagram of the overall structure of the needle removal mechanism of the present invention;

[0027] Figure 9 This is a state diagram of the needle removal mechanism in the present invention when it is not started.

[0028] Figure: 1, support plate; 2, baking oven; 201, loading slot 1; 202, transmission belt inlet and outlet hole; 3, electric heater; 4, discharge scraper; 401, inclined slide; 5, magnet strip; 6, grooved slide rail; 7, conveyor chain; 8, main sprocket; 9, lifting rod; 901, side plate; 10, curved plate; 11, bearing seat; 12, shaft rod frame 1; 13, folding bearing plate; 14, boss Slider; 15. Side blocking plate 1; 16. Guide push rod; 161. Support column; 17. Oblique bar hole; 18. Vibrator; 19. Discharge port; 20. Trapezoidal push block; 21. Electric push rod 1; 22. Side blocking plate 2; 23. Pull rope; 24. Electric push rod 2; 25. Arc-shaped hinged plate; 26. Sealing cover; 27. Heating coil; 28. Roller frame; 29. ​​Support hanger; 30. Roller. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] In this embodiment, refer to Figures 1-9 , a veterinary syringe destruction device, including a baking oven 2 with a horizontal tubular structure as a whole, and two symmetrical support plates 1 are fixed near the middle of the circumferential outer wall of the baking oven 2, and the two ends of the baking oven 2 are respectively provided with a side blocking plate 15 and a side blocking plate 22 with a symmetrical and disc-shaped structure, and the opposite sides of the side blocking plate 15 and the side blocking plate 2 are each provided with a truncated cone-shaped annular groove, and the bottom of the two annular grooves are fixed with a heating coil 27, and the side blocking plate 15 can slide axially for loading; a needle removal mechanism is provided between the top ends of the two support plates 1, and the needle removal mechanism includes a groove-shaped slide rail 6 fixed to the top openings of the two support plates 1 and facing each other and vertical, and the two groove-shaped slide rails 6 are connected. The main sprocket 8 and the two rollers 30 are respectively provided with a main sprocket 8 and two rollers 30. The main sprocket 8 and the two rollers 30 are connected with the same conveyor chain 7 for transmission, and a plurality of magnet strips 5 parallel to each other are embedded on the conveyor chain 7. By setting the magnet strips 5 parallel to each other on the conveyor chain 7, the waste with the needle tip can be heated and softened at the beginning. After the iron needle tip falls off, the main sprocket 8 is started to rotate, and the adsorbed needle tip can be slowly taken out for unified collection and treatment. At this time, the separation of the needle tip and the plastic can be completed, and there is no need to incinerate the plastic. It only needs to be heated and softened to be in a molten state, which is convenient for reducing the volume for collection and high-temperature disinfection.

[0031] Reference Figure 6 The polished inner wall of the annular groove can form heat accumulation to increase the heating effect on the needle with plastic inside.

[0032] Reference Figure 3 and Figure 6 , a feeding slot 201 is provided on the top of one end of the side blocking plate 15 of the baking oven 2, and a U-shaped notch that can overlap with the feeding slot 201 is provided near the top of the flared edge of the side blocking plate 15; a support column 161 extending to the center position is fixed on the circumferential inner wall of the baking oven 2 below the feeding slot 201, and a slip ring is reserved at the top of the support column 161, and a guide push rod 16 is slidably connected in the middle of the slip ring, and the end of the guide push rod 16 is fixed to the side of the side blocking plate 15; an electric heater 3 that is compatible with the heating coil 27 on the side is fixed on the opposite side of the guide push rod 16 and the side blocking plate 22; by setting a sliding side blocking plate 15 in conjunction with the U-shaped notch, when loading, the side blocking plate 15 only needs to be withdrawn a certain distance to expose the loading position.

[0033] Reference Figure 6 The distance between the side blocking plate 15 and the side blocking plate 2 22 during operation is equal to 1.1-1.2 times the length of the needle tip, and a fixed table is fixed near the bottom of the circumferential outer wall of the baking oven 2, and a vibrator 18 is fixed to the surface of the fixed table by screws. In combination with the two annular grooves with a truncated cone-shaped cross-section, the positions of the needle tips remaining after melting can be straightened and parallel to each other, that is, the direction of the needle tips is parallel to the axis of the baking oven 2.

[0034] Reference Figure 3 and Figure 6 A discharge port 19 is reserved near the bottom end of the circumferential outer wall of the baking oven 2, and a curved arc-shaped hinged plate 25 is hinged at the edge of the circumferential outer wall of the baking oven 2 near the discharge port 19, and a sealing plug cover 26 is fixed to one end of the arc-shaped hinged plate 25 near the discharge port 19; an electric push rod 21 extending horizontally toward the middle is inserted at the bottom end of the support plate 1 near the side of the arc-shaped hinged plate 25, and a trapezoidal push block 20 is fixed to the end of the extension rod of the electric push rod 21, and the inclined surface of the trapezoidal push block 20 is in close contact with the lower surface of the arc-shaped hinged plate 25. Through the set trapezoidal push block 20, the sealing plug cover 26 can be tightened and loosened by its own horizontal movement, which is convenient to operate, has good sealing performance, and good operability.

[0035] In the present invention, the lower surface of the trapezoidal push block 20 is higher than the plane of the bottom of the support plate 1, ensuring that the device can prevent the material from being connected at the bottom after the material is discharged; the circumferential outer wall of the side blocking plate 22 is threaded, and the circumferential inner wall of one end of the baking oven 2 close to the side blocking plate 22 is threaded and matched with the thread, making the disassembly and assembly of the side blocking plate 22 more convenient and facilitating later cleaning.

[0036] Reference Figure 5-Figure 8The outer circumferential wall of the baking oven 2 is provided with two symmetrical transmission belt inlet and outlet holes 202 near the top thereof and adapted to the cross-sectional shape of the conveyor chain 7; a roller frame 28 is fixed to the bottom end of the support hanger 29, and two rollers 30 are rotatably connected to the two ends of the roller frame 28, the axis lines of the two rollers 30 are parallel to each other and at the same height, and the axis lines of the rollers 30 are parallel to the axis line of the main sprocket 8, and the main sprocket 8 is located directly above the middle of the two rollers 30; two symmetrical bearing seats are fixed to the top end of the support hanger 29 11, and the two bearing seats 11 are respectively fixed with symmetrical boss sliders 14 on the opposite sides, and the two boss sliders 14 are respectively slidably connected to the corresponding groove-shaped slide rails 6; the outer wall of the baking oven 2 is provided with a through hole near the top for the support hanger 29 to slide up and down; through such an arrangement, the support hanger 29 carrying the conveyor chain 7 and the magnet bar 5 embedded therein can first move upward away from the high-temperature area and the raw material area during the baking and softening process, and then descend for adsorption and classification after the plastic melts and the overall volume becomes smaller.

[0037] Reference Figure 5-Figure 9 , coaxial roller heads are reserved at both ends of the main sprocket 8, and a folding supporting plate 13 is fixed between the top ends of the two support plates 1 near the rear side of the device, and two symmetrical shaft rod frames 12 are fixed on the top ends of the folding supporting plate 13, and the two shaft rod frames 12 are rotatably connected with the same lifting rod 9 with an overall H-shaped structure, the lifting rod 9 includes two parallel side strips 901, and the side strips 901 are each provided with a strip hole adapted to the diameter of the roller head at one end near the main sprocket 8; an arc plate 10 is fixed to the middle of the end of the lifting rod 9 away from the main sprocket 8, and the center of the arc plate 10 falls on the rotating shaft, a pull rope 23 is fixed to the top end of the arc plate 10, and a vertically downward electric push rod 24 is fixed to the bottom end of the pull rope 23; through the set lifting rod 9, when it is necessary to control the up and down movement of the overall conveying chain 7, it is only necessary to control the extension rod of the electric push rod 24 to extend and retract.

[0038] Reference Figure 4-Figure 5 The side of the magnet bar 5 away from the support hanger 29 is flush with the surface of the conveyor chain 7, and the sides of the two support plates 1 are respectively provided with mutually symmetrical oblique bar holes 17 near the top corners of the front side, and the same oblique slide bar 401 is slidably connected between the two oblique bar holes 17, and the top of the oblique slide bar 401 is fixed with the same discharging scraper 4, and the top of the discharging scraper 4 is against the surface of the conveyor chain 7; by setting the discharging scraper 4 against the surface of the conveyor chain 7, the needle tip adsorbed on the surface of the magnet bar 5 can be quickly scraped off.

[0039] Reference Figure 4 and Figure 7 A hexagonal nut is welded on the upper surface of one end of the inclined slide bar 401, and a positioning nut is screwed into the hexagonal nut.

[0040] Working principle: When the device is in use, the movable side blocking plate 15 is first controlled to retreat to expose the U-shaped notch and the loading slot 201, and then the waste needles to be processed are put into the baking oven 2, and the side blocking plate 15 is pushed back to its original position; the extension rod of the electric push rod 24 is controlled to extend to lift the supporting hanger 29 as a whole; space is reserved for melting the needles; then the two electric heaters 3 are started until all the needle tips fall off the needles; after a period of melting, the vibrator 18 is started, and the two annular grooves with a truncated cone-shaped cross-section can be used to straighten the positions of the needle tips remaining after melting into parallel positions, that is, the direction of the needle tips is parallel to the axis of the baking oven 2; at this time, the conveyor chain 7 is controlled to descend as a whole, and the adsorbed needle tips can be slowly taken out for unified collection and processing. At this time, the separation of the needle tips and the plastic can be completed, and there is no need to incinerate the plastic. It only needs to be heated and softened into a molten state, which is convenient for reducing the volume for collection and high-temperature disinfection.

[0041] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A veterinary syringe destruction device, comprising a baking oven (2) of a horizontally arranged tubular structure, wherein two mutually symmetrical support plates (1) are fixed near the middle of the circumferential outer wall of the baking oven (2), characterized in that: The two ends of the baking oven (2) are respectively provided with a side blocking plate 1 (15) and a side blocking plate 2 (22) which are symmetrical and have a disc-shaped structure, and an annular groove of a truncated cone structure is opened on the opposite side of the side blocking plate 1 (15) and the side blocking plate 2 (22), and the bottom of the two annular grooves is fixed with a heating coil (27), and the side blocking plate 1 (15) can slide axially; a same needle removal mechanism extending into the baking oven (2) is provided between the top ends of the two support plates (1). The needle removal mechanism includes a grooved slide rail (6) fixed on the top ends of two support plates (1) with openings facing each other and vertical. A support hanger (29) is slidably connected between the two grooved slide rails (6). A main sprocket (8) and two contact rollers (30) are respectively provided at the upper and lower ends of the support hanger (29). A same conveying chain (7) is transmission-connected between the main sprocket (8) and the two contact rollers (30). A plurality of magnet strips (5) parallel to each other are embedded on the conveying chain (7).

2. A veterinary syringe destruction device according to claim 1, characterized in that: The annular inner wall of the annular groove is polished.

3. A veterinary syringe destruction device according to claim 1, characterized in that: The baking oven (2) is provided with a feeding slot (201) located above one end of the side blocking plate (15), and a U-shaped notch that can overlap with the feeding slot (201) is provided near the top of the expanded edge of the side blocking plate (15); a support column (161) extending to the center position is fixed on the circumferential inner wall of the baking oven (2) below the feeding slot (201), and a slip ring is reserved at the top of the support column (161), and a guide push rod (16) is slidably connected in the middle of the slip ring, and the end of the guide push rod (16) is fixed to the side of the side blocking plate (15); the guide push rod (16) and the side blocking plate (22) opposite to each other are both fixed with an electric heater (3) that is compatible with the heating coil (27) on the side.

4. A veterinary syringe destruction device according to claim 1, characterized in that: The distance between the side blocking plate 1 (15) and the side blocking plate 2 (22) is equal to 1.1-1.2 times the length of the needle tip, and a fixed table is fixed to the circumferential outer wall of the baking oven (2) near the bottom end, and a vibrator (18) is fixed to the surface of the fixed table by screws.

5. The veterinary syringe destruction device according to claim 1, characterized in that: A discharge port (19) is reserved near the bottom of the circumferential outer wall of the baking oven (2), and a curved arc-shaped hinge plate (25) is hinged at the edge of the circumferential outer wall of the baking oven (2) near the discharge port (19), and a sealing cover (26) is fixed to one end of the arc-shaped hinge plate (25) near the discharge port (19); an electric push rod (21) extending horizontally toward the middle is plugged into the bottom end of the support plate (1) near one side of the arc-shaped hinge plate (25), and a trapezoidal push block (20) is fixed to the end of the extension rod of the electric push rod (21), and the inclined surface of the trapezoidal push block (20) is in close contact with the lower surface of the arc-shaped hinge plate (25).

6. A veterinary syringe destruction device according to claim 5, characterized in that: The lower surface of the trapezoidal push block (20) is higher than the plane where the bottom of the support plate (1) is located; the circumferential outer wall of the side blocking plate (22) is provided with a thread, and the circumferential inner wall of one end of the baking oven (2) close to the side blocking plate (22) is provided with a thread groove adapted to the thread.

7. A veterinary syringe destruction device according to claim 1, characterized in that: The baking oven (2) has two symmetrical transmission belt inlet and outlet holes (202) near the top of the circumferential outer wall, which are adapted to the cross-sectional shape of the conveyor chain (7); a roller frame (28) is fixed to the bottom end of the support hanger (29), and two rollers (30) are rotatably connected to the two ends of the roller frame (28), the axis lines of the two rollers (30) are parallel to each other and at the same height, and the axis lines of the rollers (30) are parallel to the axis line of the main sprocket (8), and the main sprocket (8) is located directly above the middle of the two rollers (30); two symmetrical bearing seats (11) are fixed to the top of the support hanger (29), and symmetrical boss sliders (14) are fixed on the opposite sides of the two bearing seats (11), and the two boss sliders (14) are respectively slidably connected to the corresponding groove-shaped slide rails (6); a through hole is opened near the top of the outer wall of the baking oven (2) for the support hanger (29) to slide up and down.

8. A veterinary syringe destruction device according to claim 7, characterized in that: Coaxial roller heads are reserved at both ends of the main sprocket (8), and a folding support plate (13) is fixed between the top ends of the two support plates (1) near the rear side of the device, and two mutually symmetrical shaft rod frames (12) are fixed to the top ends of the folding support plate (13), and a lifting rod (9) with an overall H-shaped structure is rotatably connected between the two shaft rod frames (12), and the lifting rod (9) includes two mutually parallel side strips (901), and the side strips (901) are each provided with a strip hole that is adapted to the diameter of the roller head at one end close to the main sprocket (8); an arc plate (10) is fixed to the middle part of the end of the lifting rod (9) away from the main sprocket (8), and the center of the arc plate (10) falls on the rotating shaft, and a pull rope (23) is fixed to the top end of the arc plate (10), and a vertically downward electric push rod (24) is fixed to the bottom end of the pull rope (23).

9. The veterinary syringe destruction device according to claim 1, characterized in that: The side of the magnet bar (5) away from the support hanger (29) is flush with the surface of the conveyor chain (7), and the sides of the two support plates (1) are respectively provided with mutually symmetrical oblique bar holes (17) near the top corners of the front side, and the same oblique sliding bar (401) is slidably connected between the two oblique bar holes (17), and the top of the oblique sliding bar (401) is fixed with the same discharge scraper (4), and the top of the discharge scraper (4) is against the surface of the conveyor chain (7).

10. A veterinary syringe destruction device according to claim 9, characterized in that: A hexagonal nut is welded to the upper surface of one end of the inclined slide bar (401), and a positioning nut is screwed into the hexagonal nut.

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