CN216839343U - Automatic collection that hydraulic engineering used removes algae device - Google Patents

Abstract

The utility model provides an automatic collection removes algae device that hydraulic engineering used, the bottom of support one end is provided with the filter plate, the top of support both sides is provided with supports the frame, the bottom of supporting the frame all is provided with fixed subassembly, and is wherein a set of one side of supporting the frame is provided with spacing subassembly, the top of support is provided with the removal subassembly, the outside swing joint of removal subassembly has the multiunit adjustable shelf. The utility model discloses a, it is rotatory to drive the movable rod through making the arc under water thrust effect to make the movable rod drive its outside brush hair and rotate when removing along the surperficial removal of filter plate, be convenient for carry out the filter plate with the rotatory algal mass that holds back on filter plate surface, and make the algal mass that is located the filter plate surface twined in the outside of brush hair, can realize the collection clearance to lieing in filter plate surface algal mass, make the area of contact between brush hair and the filter plate bigger, make its strike off the effect better.

Description

Automatic collection that hydraulic engineering used removes algae device

Technical Field

The utility model relates to a remove algae technical field, specifically be an automatic collection that hydraulic engineering used removes algae device.

Background

Now discloses an automatic collection and algae removal device for hydraulic engineering (see patent number: CN 202110430456.1), which comprises a supporting table top, a collecting plate arranged below the supporting table top, a transmission motor arranged at the top of the supporting table top and a scraping device arranged at the bottom of the supporting table top, the bottom of the supporting table surface is provided with a guide post, both ends of the guide post are provided with connecting blocks, the connecting block is fixedly connected to the bottom surface of the supporting table top; the scraping device comprises a scraper blade and a connecting lug arranged on the scraper blade, a sliding hole is arranged on the connecting lug in a penetrating way, the guide post passes through the sliding hole, a transmission mechanism is arranged on the supporting table-board, the transmission motor is used for driving the scraper to slide back and forth along the guide post through the transmission mechanism, the supporting table is provided with a driving mechanism, and the transmission motor is used for driving the collecting plate to slide up and down through the driving mechanism.

When the automatic algae collecting and removing device for the hydraulic engineering is used, through the technical scheme, when the threads on the outer side of the screw rod are exposed out of the top of the thread half pipe, the thread section two on the surface of the short pipe is screwed with the thread section one at the bottom of the thread half pipe, in the process of continuing to rotate the subsequent driving gear, the guide block is matched with the guide groove to limit the relative rotation between the short pipe and the screw rod, so that the short pipe can gradually move upwards, in the process, the scraping device can scrape algae on the top surface of the collecting plate, when the conical ring at the bottom of the short pipe extends into the two thread half pipes, the conical ring can prop the two thread half pipes apart, when the thread half pipes are contacted with the touch switch, the controller controls the electromagnet to be electrified to tightly suck the thread half pipes, so that the thread half pipes are separated from the screw rod, the collecting plate can sink into water to start next algae removal, and when the scraping device scrapes the algae on the top surface of the collecting plate, area of contact between scraping device and the collection board is less to make scraping device be relatively poor to the effect of scraping of the algae material of collecting the board surface collection, and scrape the back algae material that scraping device surface is infected with more, need regularly clear up it, do not mention if how to its quick replacement in the automatic collection algae removal device that this hydraulic engineering used, thereby what scraping device surface that the surface carried algae material was blockked up by algae material in the messenger uses, cause the reduction of later stage scraping efficiency, the rate of utilization has been reduced.

Disclosure of Invention

The utility model is not enough to prior art, the utility model provides an automatic collection removes algae device that hydraulic engineering used, it strikes off the algae of collecting the board top surface to have solved scraping device, area of contact between scraping device and the collection board is less, thereby it is relatively poor to make scraping device to the effect of striking off of the algae material of collecting board surface collection, and strike off the algae material that the back scraping device surface is infected with more, need regularly clear up it, then mention what if its quick replacement in the automatic collection removes algae device that this hydraulic engineering used, thereby what the scraping device surface that the surface carried algae material was blockked up by algae material in the messenger uses, cause the reduction of later stage striking off efficiency, the problem of the rate of utilization has been reduced.

In order to realize the technical characteristics, the purpose of the utility model is realized as follows: the utility model provides an automatic collection removes algae device that hydraulic engineering used, it includes the support, the bottom of support one end is provided with the filter plate, the top of support both sides is provided with supports the frame, the bottom of supporting the frame all is provided with fixed subassembly, and wherein a set of one side of supporting the frame is provided with the spacing group, the top of support is provided with the removal subassembly, the outside swing joint of removal subassembly has the multiunit adjustable shelf, the bottom of adjustable shelf one end all is provided with the joint subassembly, the bottom swing joint all has the subassembly of striking off in the bottom of joint subassembly.

First motor is installed to one side of spacing subassembly, the top of support one side is provided with the axis of rotation, the axis of rotation is close to one of them a set of one side of supporting the frame and is provided with the extension board, and one of them a set of one side of supporting the frame and keeping away from first motor is provided with the spacing ring, the output of first motor passes the spacing ring and extends to the opposite side, and the output of first motor and the lateral wall butt joint of extension board are connected, the extension board is close to the top and the bottom of first motor one side and all is provided with the gag lever post, and is adjacent the terminal surface that the gag lever post is adjacent all is provided with the arc spacing frame, the inboard of arc spacing frame all rolls and inlays and is equipped with the spin, and the spin constitutes the roll cooperation with the outer wall of spacing ring.

The movable assembly comprises a second motor, the two ends of the top side inside the support are connected with a screw rod in a rotating mode, one side, close to the first motor, of the outside of the screw rod is provided with a roller in a sleeved mode, the roller is provided with a belt in a sleeved mode, and one end of the screw rod is connected with the output end of the second motor in a butt joint mode.

The clamping component comprises a clamping groove, one side of one end of the clamping groove is provided with a supporting rod, the top of one end of the clamping groove is provided with a sliding rod, one end of the clamping groove is connected with a baffle through the sliding rod in a sliding mode, the bottom end of the inside of the clamping groove is movably connected with a pressing plate, and the top of the pressing plate is provided with an elastic piece.

The bottom of the fixing component is provided with a U-shaped frame, a stud penetrating to one side of the U-shaped frame is arranged in the middle of one side of the U-shaped frame, and a supporting plate is arranged on one side, close to the U-shaped frame, of the stud.

Strike off the subassembly and include the movable rod, the bottom in the movable rod outside all evenly is provided with the brush hair, the both sides of movable rod bottom all are provided with the arc, the top of movable rod all is provided with the fixture block, the movable rod passes through the fixture block and mutually supports with the draw-in groove of joint subassembly to constitute with the adjustable shelf and can dismantle and be connected.

And threaded holes matched with the screw rods are formed in two ends of one side of the movable frame, and the movable frame is in threaded transmission connection with the screw rods through the threaded holes.

The outside of spacing ring is provided with the spacing groove with arc spacing frame assorted, and is two sets of the arc spacing frame all is located the outside of spacing groove, the gag lever post passes through the spacing groove constitution sliding connection of arc spacing frame and spacing ring.

The utility model discloses beneficial effect:

1. the utility model discloses a movable rod that sets up, the brush hair, the arc, the fixture block, the draw-in groove, the second motor, the screw rod, gyro wheel and belt, when the algae material that is infected with on needs filter plate surface strikes off, the second motor drives two sets of screw rods and rotates under electric power action, and realize the translation about the adjustable shelf under the effect of screw hole, the arc drives the movable rod rotation under water thrust action simultaneously, and it is rotatory when making the movable rod drive its outside brush hair and control along the surface of filter plate about, the rotatory filter plate that carries out of algae material that is convenient for hold back the filter plate surface, and make the algae material that is located the filter plate surface twine in the outside of brush hair, can realize the collection clearance to lieing in filter plate surface algae material, make the area of contact between brush hair and the filter plate bigger, make its effect of striking off better.

2. When the rotating rod, the brush hair and the arc plate need to be replaced, the baffle plate is directly stirred rightwards along the sliding rod, so that the left side of the baffle plate is slowly separated from the right side of the abutting rod, then the movable rod is moved forwards until the clamping block at the top of the movable rod is slowly moved forwards along the clamping groove and is moved out from the inside of the clamping groove, the movable rod can be dismantled, then the clamping block at the top of the new movable rod is contacted with the clamping groove and is moved towards the inside of the clamping groove along the bottom of the pressing plate until the clamping block is extruded between the pressing plate and the bottom end inside the clamping groove, then the baffle plate is moved leftwards, one end of the baffle plate is moved leftwards along the sliding rod until the left side of the baffle plate is contacted with the right side of the abutting rod, the quick replacement of the movable rod can be realized, when more algae substances stained on the surface of the brush hair outside the movable rod can be replaced or taken down to clean the algae substances stained on the surface of the movable rod, thereby guaranteed the normal use of scraping the subassembly, guaranteed the efficiency of scraping in its later stage, improved the rate of utilization.

3. The utility model discloses a draw-in groove and the fixture block that sets up to can make the draw-in groove carry out spacing support to the fixture block, provide sufficient rotation space to receiving rivers to influence pivoted fixture block simultaneously, guarantee its normal rotation, thereby better messenger's brush hair twines the algae material that is infected with on the filter plate surface and strikes off.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of a partial structure of the present invention.

Fig. 3 is a schematic structural diagram of the extrusion plate of the present invention.

Fig. 4 is a partial perspective view of the present invention.

Fig. 5 is a schematic structural view of the limiting assembly of the present invention.

Fig. 6 is a schematic structural diagram of the moving assembly of the present invention.

Fig. 7 is an enlarged view of a in fig. 1 according to the present invention.

Fig. 8 is an enlarged view of B in fig. 1 according to the present invention.

Fig. 9 is an enlarged view of the movable frame of fig. 1 according to the present invention.

Fig. 10 is an enlarged view of the side of the limiting element shown in fig. 1 according to the present invention.

In the figure: 1. a support; 2. filtering the plate; 3. supporting the frame; 4. a U-shaped frame; 5. a limiting component; 501. a first motor; 502. a limiting ring; 503. a support plate; 504. a limiting rod; 505. an arc-shaped limiting frame; 506. rolling a ball; 6. a rotating shaft; 7. a moving assembly; 701. a second motor; 702. a screw; 703. a roller; 704. a belt; 8. a movable frame; 9. a threaded hole; 10. a clamping assembly; 1001. a card slot; 1002. a support rod; 1003. a slide bar; 1004. pressing a plate; 1005. an elastic member; 1006. a baffle plate; 11. a scraping assembly; 1101. a movable rod; 1102. brushing; 1103. an arc-shaped plate; 1104. and (7) clamping blocks.

Detailed Description

The following describes embodiments of the present invention with reference to the accompanying drawings.

Referring to FIGS. 1-10: the utility model provides an automatic collection removes algae device that hydraulic engineering used, which comprises a bracket 1, the bottom of 1 one end of support is provided with filter plate 2, the top of 1 both sides of support is provided with supports 3, the bottom that supports 3 all is provided with fixed subassembly 4, one of them group supports one side of 3 and is provided with spacing subassembly 5, the top of support 1 is provided with removes subassembly 7, the outside swing joint that removes subassembly 7 has multiunit adjustable shelf 8, the bottom of 8 one ends of adjustable shelf all is provided with joint subassembly 10, the bottom of joint subassembly 10 all swing joint has strikes off subassembly 11.

In the utility model, when the algae substance stained on the surface of the filter plate 2 needs to be scraped, the second motor 701 drives one set of screw rods 702 to rotate under the action of electric power, and drives the other set of screw rods 702 to rotate under the action of the belt 704 and the roller 703, so that the left and right translation of the movable frame 8 can be realized under the action of the threaded holes 9, meanwhile, the arc plate 1103 drives the movable rod 1101 to rotate under the action of water thrust, so that the clamping block 1104 at the top of the movable rod 1101 rotates inside the clamping groove 1001, the movable rod 1101 can drive the bristles 1102 outside the movable rod 1101 to rotate while moving left and right along the surface of the filter plate 2, the algae substance intercepted on the surface of the filter plate 2 can be conveniently and rotatably carried out of the filter plate 2, the algae substance on the surface of the filter plate 2 is wound outside the bristles 1102, the collection and cleaning of the algae substance on the surface of the filter plate 2 can be realized, thereby the contact area between the bristles 1102 and the filter plate 2 is larger, thereby making the scraping assembly 11 have better scraping effect on the algae collected on the surface of the filter plate 2.

Referring to fig. 1, 4, 5 and 8, a first motor 501 is installed at one side of a limiting component 5, a rotating shaft 6 is installed at the top end of one side of a bracket 1, a support plate 503 is installed at one side of the rotating shaft 6 close to one of the support frames 3, a limiting ring 502 is installed at one side of one of the support frames 3 far away from the first motor 501, the output end of the first motor 501 extends to the other side thereof through the limiting ring 502, the output end of the first motor 501 is connected with one side of the support plate 503 in a butt joint manner, limiting rods 504 are installed at the top end and the bottom end of the support plate 503 close to one side of the first motor 501, arc-shaped limiting frames 505 are installed at the adjacent end surfaces of the adjacent limiting rods 504, rolling balls 506 are embedded at the inner sides of the arc-shaped limiting frames 505, the support plate can be driven by the first motor 501 to rotate by using the limiting ring 502 and the limiting rods 504, and the influence of gravity generated by the bracket 1 and the rotating shaft 6 on the first motor 501 is reduced, the service life of the first motor 501 is prolonged to a certain extent, the contact area between the inner side of the arc-shaped limiting frame 505 and the limiting ring 502 is reduced by using the rolling balls 506, and the frictional resistance generated between the inner side of the arc-shaped limiting frame and the limiting ring 502 in the moving process is reduced, so that the movement of the arc-shaped limiting frame is more labor-saving.

Please refer to fig. 1, 2, 6 and 7, the moving assembly 7 includes a second motor 701, two ends of the top side inside the bracket 1 are rotatably connected with a screw 702, one side of the outside of the screw 702 close to the first motor 501 is sleeved with a roller 703, the outside of the two sets of rollers 703 is sleeved with a belt, one side of one set of screws 702 is connected with the output end of the second motor 701 in a butt joint manner, the rollers 703 and the belt rollers 703 are utilized to realize that the one set of second motor 701 can simultaneously drive the two sets of screws 702 to rotate and simultaneously realize the left-right movement of the movable frame 8, when the one set of screws 702 is used, the movable frame 8 is driven to rotate with the one set of screws 702 as the base point, when the two sets of screws 702 generate a rotating force to the movable frame 8 and simultaneously generate a limiting support to prevent the movable frame from rotating forwards and backwards and shaking, so that the movable frame 8 can only move left and right along the two sets of screws 702.

Referring to fig. 1, 2, 3, 4 and 7, each clamping assembly 10 includes a clamping groove 1001, a supporting rod 1002 is disposed on one side of one end of the clamping groove 1001, a sliding rod 1003 is disposed on the top of one end of the clamping groove 1001, a baffle 1006 is slidably connected to one end of the clamping groove 1001 through the sliding rod 1003, a pressing plate 1004 is movably connected to the bottom end of the inside of the clamping groove 1001, and an elastic member 1005 is disposed on the top of the pressing plate 1004, when the movable rod 1101, the bristles 1102 and the arc plate 1103 need to be replaced, the baffle 1006 is directly shifted to the right along the sliding rod 1003, so that the left side of the baffle 1006 is separated from the right side of the supporting rod 1002 slowly, the movable rod 1101 is moved forward until a clamping block 1104 at the top of the movable rod 1101 moves forward slowly along the clamping groove 1001 and moves out of the clamping groove 1001, so as to achieve the removal of the movable rod 1101, then the new clamping block 1104 at the top of the movable rod 1101 contacts with the clamping groove 1001 and moves towards the inside of the clamping groove 1001 along the bottom of the pressing plate 1004, and produce the extrusion force to clamp plate 1004 and the elastic component 1005 at its top, make elastic component 1005 atress warp, thereby make the distance between clamp plate 1004 and the inside bottom of draw-in groove 1001 bigger and bigger, until the fixture block 1104 is squeezed to between clamp plate 1004 and the inside bottom of draw-in groove 1001, then move baffle 1006 left, make one end of baffle 1006 move left along slide bar 1003, until the left side of baffle 1006 contacts with the right side of resisting rod 1002, can realize the quick replacement to movable rod 1101, when the outside brush hair 1102 surface of movable rod 1101 is infected with the alga material more, can change or take off and clear up the alga material that its surface is infected with, thereby guaranteed the normal use of scraping subassembly 11, guaranteed its later stage efficiency to scrape, improved the rate of utilization.

Referring to fig. 1, 4 and 8, the bottom of the fixing component 4 is provided with a U-shaped frame, a stud penetrating to one side of the U-shaped frame is arranged at the middle position of one side of the U-shaped frame, a support plate is arranged at one side of the stud close to the U-shaped frame, the support 1 is stably supported by the support plate and the stud, when the stud moves leftwards, the support plate can be driven to move leftwards until the support 3 is supported at the edge of the water pool, and the stability of the installation of the support 1 is ensured.

Referring to fig. 1, 2 and 7, the scraping assembly 11 includes movable rods 1101, bristles 1102 are uniformly arranged at the bottom ends of the outer sides of the movable rods 1101, arc-shaped plates 1103 are arranged on both sides of the bottoms of the movable rods 1101, clamping blocks 1104 are arranged at the tops of the movable rods 1101, the movable rods 1101 are detachably connected with the movable frame 8 through the mutual matching of the clamping blocks 1104 and the clamping grooves 1001, and the bristles 1102 and the movable rods 1101 are convenient to replace and detach.

Referring to fig. 1, 2, 6 and 7, both ends of one side of the movable frame 8 are provided with threaded holes 9 matched with the threaded rods 702, the movable frame 8 is in threaded connection with the threaded rods 702 through the threaded holes 9, and the movable frame 8 is in threaded connection with the threaded rods 702 through the threaded holes 9.

Referring to fig. 1, 4, 5 and 8, the outer side of the limiting ring 502 is provided with a limiting groove matched with the arc-shaped limiting frame 505, two sets of arc-shaped limiting frames 505 are located at the outer side of the limiting groove, the limiting rod 504 is in sliding connection with the limiting ring 502 through the mutual matching of the arc-shaped limiting frame 505 and the limiting groove, the supporting plate can be driven by the first motor 501 to rotate by the limiting ring 502 and the limiting rod 504, the gravity influence of the support 1 and the rotating shaft 6 on the first motor 501 is reduced, and the service life of the first motor 501 is prolonged to a certain extent.

Example 2:

when the utility model is used, when algae contaminated on the surface of the filter plate 2 need to be scraped, the second motor 701 drives one set of the screws 702 to rotate under the action of electric power, and drives the other set of the screws 702 to rotate under the action of the belt 704 and the rollers 703, so that the left-right translation of the movable frame 8 can be realized under the action of the threaded holes 9, meanwhile, the arc-shaped plate 1103 drives the movable rod 1101 to rotate under the action of water thrust, so that the fixture block 1104 at the top of the movable rod 1101 rotates inside the clamping groove 1101, the movable rod 1101 can drive the bristles 1102 outside the movable rod 1101 to rotate along the left-right movement of the surface of the filter plate 2, the algae trapped on the surface of the filter plate 2 can be conveniently and rotatably carried out of the filter plate 2, the algae on the surface of the filter plate 2 can be wound outside the bristles 1102, the collection and cleaning of the algae on the surface of the filter plate 2 can be realized, and the contact area between the bristles and the filter plate 2 is larger, therefore, the scraping effect of the scraping assembly 11 on algae substances collected on the surface of the filter plate 2 is better, when the movable rod 1101, the bristles 1102 and the arc plate 1103 need to be replaced, the baffle plate 1006 is directly pulled rightwards along the sliding rod 1003, so that the left side of the baffle plate 1006 is slowly separated from the right side of the resisting rod 1002, then the movable rod 1101 is moved forwards until the fixture block 1104 at the top of the movable rod 1101 slowly moves forwards along the clamping groove 1001 and moves out of the clamping groove 1001, so that the movable rod 1101 can be detached, then the new fixture block 1104 at the top of the movable rod 1101 is contacted with the clamping groove 1001 and moves towards the inside of the clamping groove 1001 along the bottom of the pressing plate 1004, and extrusion force is generated on the pressing plate 1004 and the elastic piece 1005 at the top of the pressing plate, so that the elastic piece is stressed and deformed, the distance between the pressing plate 1004 and the bottom end inside the clamping groove 1001 is larger and larger until the fixture block 1104 is extruded between the pressing plate 1004 and the bottom end inside the clamping groove 1001, then move baffle 1006 left, make the one end of baffle 1006 move left along slide bar 1003, until the left side of baffle 1006 with support the contact of pole 1002 right side, can realize the quick replacement to movable rod 1101, when the outside brush hair 1102 surface of movable rod 1101 is infected with the algae material more, can change it or take off and clear up its surface infected with algae material, thereby guaranteed the normal use of scraping subassembly 11, guaranteed its later stage scrape efficiency, improved the rate of utilization.

Claims (8)

1. The utility model provides an automatic collection removes algae device that hydraulic engineering used, its characterized in that, it includes support (1), the bottom of support (1) one end is provided with filter plate (2), the top of support (1) both sides is provided with supports (3), the bottom of supporting (3) all is provided with fixed subassembly (4), one of them is a set of support one side of (3) is provided with spacing subassembly (5), the top of support (1) is provided with removes subassembly (7), the outside swing joint of removing subassembly (7) has multiunit adjustable shelf (8), the bottom of adjustable shelf (8) one end all is provided with joint subassembly (10), the bottom of joint subassembly (10) all swing joint has strikes off subassembly (11).

2. The automatic algae collecting and removing device for the water conservancy project according to claim 1, wherein a first motor (501) is installed at one side of the limiting component (5), a rotating shaft (6) is arranged at the top end of one side of the bracket (1), a supporting plate (503) is arranged at one side of the rotating shaft (6) close to one of the supporting frames (3), a limiting ring (502) is arranged at one side of one of the supporting frames (3) far away from the first motor (501), the output end of the first motor (501) penetrates through the limiting ring (502) to extend to the other side, the output end of the first motor (501) is in butt joint connection with the outer side wall of the supporting plate (503), limiting rods (504) are arranged at the top end and the bottom end of one side of the supporting plate (503) close to the first motor (501), and arc-shaped limiting frames (505) are arranged at the adjacent end faces of the limiting rods (504), rolling balls (506) are embedded in the inner sides of the arc-shaped limiting frames (505) in a rolling mode, and the rolling balls (506) are matched with the outer wall of the limiting ring (502) in a rolling mode.

3. The automatic collection algae removal device for the water conservancy project according to claim 2, wherein the moving assembly (7) comprises a second motor (701), both ends of the top side in the support (1) are rotatably connected with screw rods (702), one side, close to the first motor (501), of the outer portion of each screw rod (702) is sleeved with a roller (703), the outer portion of each roller (703) is sleeved with a belt (704), and one end of each screw rod (702) is in butt joint with the output end of the second motor (701).

4. The automatic collection and algae removal device for the water conservancy project according to claim 1, wherein the clamping assembly (10) comprises a clamping groove (1001), one side of one end of the clamping groove (1001) is provided with a supporting rod (1002), the top of one end of the clamping groove (1001) is provided with a sliding rod (1003), one end of the clamping groove (1001) is slidably connected with a baffle (1006) through the sliding rod (1003), the bottom end inside the clamping groove (1001) is movably connected with a pressing plate (1004), and the top of the pressing plate (1004) is provided with an elastic part (1005).

5. The automatic collection and algae removal device for the water conservancy project according to claim 1, wherein the bottom of the fixing assembly (4) is provided with a U-shaped frame, a stud penetrating to one side of the U-shaped frame is arranged in the middle of one side of the U-shaped frame, and a supporting plate is arranged on one side, close to the U-shaped frame, of the stud.

6. The automatic collection algae removal device for the water conservancy project according to claim 1, wherein the scraping assembly (11) comprises a movable rod (1101), bristles (1102) are uniformly arranged at the bottom end of the outer side of the movable rod (1101), arc-shaped plates (1103) are arranged on two sides of the bottom of the movable rod (1101), a clamping block (1104) is arranged at the top of the movable rod (1101), and the movable rod (1101) is matched with a clamping groove (1001) of the clamping assembly (10) through the clamping block (1104) and is detachably connected with the movable frame (1001).

7. The automatic collection and algae removal device for the water conservancy project according to claim 1, wherein threaded holes (9) matched with the threaded rods (702) are formed in two ends of one side of the movable frame (8), and the movable frame (8) is in threaded transmission connection with the threaded rods (702) through the threaded holes (9).

8. The automatic collection and algae removal device for the water conservancy project according to claim 2, wherein the outer side of the limit ring (502) is provided with limit grooves matched with the arc-shaped limit frames (505), two groups of the arc-shaped limit frames (505) are positioned on the outer sides of the limit grooves, and the limit rod (504) is in sliding connection with the limit grooves of the limit ring (502) through the arc-shaped limit frames (505).

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