CN212642214U

CN212642214U - Construction system for quickly plugging fabricated external wall construction hole

Info

Publication number: CN212642214U
Application number: CN202020762265.6U
Authority: CN
Inventors: 汪华衡
Original assignee: Suzhou Yuhong Construction Co ltd
Current assignee: Suzhou Yuhong Construction Co ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2021-03-02
Anticipated expiration: 2030-05-11

Abstract

The utility model discloses a construction system for quick shutoff of assembled outer wall construction entrance to a cave, including buried sleeve, post type shutoff piece, limiting plate, intercommunication groove and adhesive in advance, the inside central point of buried sleeve puts the department and installs post type shutoff piece, and the bottom of post type shutoff piece extends to buried sleeve's outside in advance, and the bottom mounting of post type shutoff piece has the limiting plate to all be equipped with the intercommunication groove on two lateral walls of limiting plate, all be equipped with embedded structure on the outer wall of buried sleeve both sides in advance, the inside one side of post type shutoff piece is equipped with the adhesive, and the inside fire-retardant granule that is equipped with of post type shutoff piece of adhesive one side to the inside fire-retardant polycarbonate granule that is equipped with of post type shutoff piece that fire-retardant granule one side was kept away from to the adhesive. The utility model discloses not only ensured the stability when shutoff construction system uses, improved the anchor joint intensity between buried sleeve and the assembled outer wall, prolonged the life of shutoff construction system moreover.

Description

Construction system for quickly plugging fabricated external wall construction hole

Technical Field

The utility model relates to a construction technical field specifically is a construction system that is used for quick shutoff of assembled outer wall construction entrance to a cave.

Background

At present to assembly type building engineering, because its building outer wall is mostly prefabricated assembled shear force wall, the entrance to a cave can't be avoided needing to be reserved to the side fascia in the work progress, the entrance to a cave need be sealed and prevent the outer wall seepage after the construction finishes, traditional mode is for adopting on-the-spot system of mixing mortar to carry out the shutoff, this process has both increased construction cycle to easy shutoff is not closely knit, there is neither economic high efficiency but also produces quality and environmental protection problem, consequently need use corresponding shutoff construction system.

The plugging construction system on the market is various and can basically meet the use requirements of people, but certain defects still exist, and the specific problems are as follows.

(1) The existing plugging construction system is inconvenient for positioning the columnar plugging piece, so that the phenomenon of slippage is easily generated in the interior of the embedded sleeve, and the stability is general;

(2) the anchoring strength between the embedded sleeve part and the assembled outer wall of the existing plugging construction system is general, which often troubles people;

(3) the column type plugging piece of the existing plugging construction system has common toughness strength and flame retardant property, so that the column type plugging piece is easy to crack and the like, and has short service life.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a construction system for quick shutoff of assembled outer wall construction entrance to a cave to it is not convenient for carry out the problem that the anchoring strength is general and the tough intensity of post type shutoff piece and fire behaviour is general to carry out location processing, pre-buried sleeve pipe position and assembled between the outer wall to propose shutoff construction system in solving above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a construction system for quickly plugging an assembled outer wall construction hole comprises an embedded sleeve, a column-shaped plugging piece, a limiting plate, a communicating groove and an adhesive, wherein the column-shaped plugging piece is installed at the central position inside the embedded sleeve, the bottom end of the column-shaped plugging piece extends to the outside of the embedded sleeve, a limiting plate is fixed at the bottom end of the column-shaped plugging piece, the communicating groove is formed in each of two outer side walls of the limiting plate, embedded structures are arranged on the outer walls of two sides of the embedded sleeve, the adhesive is arranged on one side inside the column-shaped plugging piece, flame retardant particles are arranged inside the column-shaped plugging piece on one side of the adhesive, flame retardant polycarbonate particles are arranged inside the column-shaped plugging piece on one side of the adhesive, second aluminum alloy sheets are arranged inside the column-shaped plugging piece on one side of the flame retardant polycarbonate particles away from the adhesive, and preset cavities are arranged inside the column-shaped plugging piece on one side of the second aluminum alloy sheets away from the flame retardant polycarbonate particles, and the inside first aluminum alloy lamellar body that is equipped with of the column type shutoff piece that the second aluminum alloy lamellar body one side was kept away from in the preset chamber, the inside steel lamellar body that is equipped with of the column type shutoff piece that the first aluminum alloy lamellar body kept away from one side in the preset chamber.

Preferably, strip-shaped positioning grooves are formed in the two inner side walls of the embedded sleeve, positioning strips are arranged inside the strip-shaped positioning grooves, and the bottom ends of the positioning strips extend to the outside of the strip-shaped positioning grooves and penetrate through the inside of the communicating groove, so that the column-shaped plugging piece is positioned inside the embedded sleeve.

Preferably, a locking groove body is arranged on the inner wall of the embedded sleeve on one side of the strip-shaped positioning groove, a locking block body is arranged inside the locking groove body, and one end of the locking block body extends to the outside of the locking groove body and is fixedly connected with the outer wall of the columnar plugging piece, so that the columnar plugging piece can be locked.

Preferably, the top of column type shutoff piece is pasted and is had the rubber gasket, and the one end that the column type shutoff piece was kept away from to the rubber gasket touches mutually with buried sheathed tube top to reduce the phenomenon that column type shutoff piece appears sliding.

Preferably, the two groups of embedded structures are arranged, and the adjacent embedded structures are symmetrical about the central line of the embedded sleeve, so that the anchoring performance of the plugging construction system is improved.

Preferably, the inside of embedded structure is equipped with lead screw, handle, screw cap and fastening seat in proper order, all be fixed with the fastening seat on the outer wall of embedded sleeve both sides, and the fastening seat one end of keeping away from embedded sleeve is fixed with the screw cap to settle the processing to the lead screw.

Preferably, the screw cap is connected to the screw rod through threads inside the screw cap, one end of the screw rod extends to the outside of the screw cap, and the handle is installed at one end, far away from the fastening seat, of the screw rod, so that the screw rod is installed inside the screw cap.

Preferably, the inside in preset chamber is equipped with equidistant second support piece, the both ends of second support piece all with preset the inner wall fixed connection in chamber, and preset intracavity portion between the adjacent second support piece all is equipped with first support piece, the both ends of first support piece all are fixed with first connecting piece, the one end that first support piece was kept away from to first connecting piece and the outer wall fixed connection who presets the chamber, and all be equipped with the second connecting piece on two lateral walls of first support piece, the one end that first support piece was kept away from to the second connecting piece and the outer wall fixed connection of second support piece, so that support first aluminum alloy sheet body and second aluminum alloy sheet body in the inside of presetting the chamber with its firm setting.

Compared with the prior art, the beneficial effects of the utility model are that: the construction system for rapidly plugging the fabricated outer wall construction hole not only ensures the stability of the plugging construction system in use, improves the anchoring strength between the embedded sleeve and the fabricated outer wall, but also prolongs the service life of the plugging construction system;

(1) the construction system for quickly plugging the assembled outer wall construction hole comprises a strip-shaped positioning groove, a communicating groove, a positioning strip, a limiting plate, a rubber gasket, a locking groove body and a locking block body, wherein the locking block body is calibrated at the position of the strip-shaped positioning groove and pushed to slide to the top of the strip-shaped positioning groove and be arranged inside an embedded sleeve, at the moment, the column-shaped plugging member is slightly rotated, the locking groove body is arranged at one end of the strip-shaped positioning groove and is communicated with the strip-shaped positioning groove, the locking block body can move to the inside of the locking groove body from the inside of the strip-shaped positioning groove, the communicating groove arranged on the outer walls at the two sides of the limiting plate and the strip-shaped positioning groove are in a horizontal structure, and one end of the positioning strip penetrates through the communicating groove and is inserted into the strip-shaped positioning groove, the column-shaped plugging piece can be positioned in the embedded sleeve to avoid the phenomenon that the column-shaped plugging piece slides in the embedded sleeve, so that the stability of the plugging construction system in use is ensured;

(2) according to the construction system for quickly plugging the fabricated outer wall construction hole, the screw rod, the handle, the screw caps and the fastening seats are arranged, the screw caps are arranged on the outer wall of the fastening seat far away from one side of the embedded sleeve, one end of the fastening seat far away from the screw caps is fixedly connected with the outer wall of the embedded sleeve, and the adjacent fastening seats are symmetrically arranged on the outer walls of the two sides of the embedded sleeve, so that the two groups of screw caps are in a symmetrical structure, the handle is arranged at one end of the screw rod, one end of the screw rod is calibrated in the screw caps at the moment, the screw rod can be screwed into the screw caps by rotating the handle, and the anchoring strength between the embedded sleeve and the fabricated outer wall is improved;

(3) the construction system for quickly plugging the assembled outer wall construction hole is provided with a first supporting piece, a first connecting piece, a second supporting piece, a first aluminum alloy sheet body, a steel sheet body, a second aluminum alloy sheet body, flame-retardant polycarbonate particles, an adhesive, flame-retardant particles and a preset cavity, wherein the flame-retardant particles and the flame-retardant polycarbonate particles are adhered to one side of the inside of a columnar plugging piece through the adhesive, and the columnar plugging piece can isolate external high temperature due to the good flame-retardant property of the flame-retardant particles and the flame-retardant polycarbonate particles, so that the heat energy is reduced for transmission treatment, the phenomena of cracks and the like are reduced, the surface of the columnar plugging piece has certain toughness strength through the good wear resistance of the steel sheet body, and meanwhile, the first supporting pieces are equidistantly arranged in the preset cavity through the first connecting piece, and set up the equidistant inside that presets the chamber of second support piece to be connected second support piece and first support piece through the second connecting piece, make it stabilize and set up and support first aluminum alloy lamellar body and second aluminum alloy lamellar body in the inside of presetting the chamber, because of first aluminum alloy lamellar body and second aluminum alloy lamellar body have good tough and tensile intensity, make the compressive property of columnar type shutoff piece promoted, further reduce the phenomenon that columnar type shutoff piece produced the crackle, thereby the life of shutoff construction system has been prolonged.

Drawings

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

FIG. 2 is a schematic side view of the strip-shaped positioning groove of the present invention;

fig. 3 is a schematic view of the column-shaped plugging member of the present invention in a bottom view;

fig. 4 is a schematic view of a top view structure of the embedded casing according to the present invention;

FIG. 5 is a schematic view of the cross-sectional enlarged structure of the embedded structure of the present invention;

fig. 6 is a schematic view of a cross-sectional enlarged structure of the column-shaped plugging member of the present invention.

In the figure: 1. pre-burying a sleeve; 2. a positioning bar; 3. a strip-shaped positioning groove; 4. a rubber gasket; 5. a column-type closure; 6. a limiting plate; 7. a communicating groove; 8. locking the trough body; 9. a locking block; 10. pre-embedding the structure; 1001. a screw rod; 1002. a handle; 1003. a screw cap; 1004. a fastening seat; 11. a first support member; 12. a first connecting member; 13. a second connecting member; 14. a second support member; 15. a first aluminum alloy sheet; 16. a steel sheet body; 17. a second aluminum alloy sheet; 18. flame retardant polycarbonate particles; 19. a binder; 20. flame retardant particles; 21. a pre-set chamber.

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. 1-6, the present invention provides an embodiment: the utility model provides a construction system for quick shutoff of assembled outer wall construction entrance to a cave, including buried sleeve 1, columnar blocking piece 5, limiting plate 6, intercommunication groove 7 and adhesive 19, the inside central point department of putting of buried sleeve 1 installs columnar blocking piece 5, the bottom of columnar blocking piece 5 extends to buried sleeve 1's outside, all be equipped with strip type constant head tank 3 on two inside walls of buried sleeve 1, and the inside of strip type constant head tank 3 is equipped with location strip 2, the bottom of location strip 2 extends to strip type constant head tank 3's outside and runs through in the inside of intercommunication groove 7.

During the use, through the inside with the one end of location strip 2 through intercommunication groove 7 insert to strip type constant head tank 3's inside, can be fixed a position post type shutoff piece 5 in buried sleeve 1's inside.

The inner wall of the embedded sleeve 1 on one side of the strip-shaped positioning groove 3 is provided with a locking groove body 8, a locking block body 9 is arranged inside the locking groove body 8, and one end of the locking block body 9 extends to the outside of the locking groove body 8 and is fixedly connected with the outer wall of the column-shaped plugging piece 5.

When the locking device is used, the locking block body 9 can be moved to the inside of the locking groove body 8 by slightly rotating the column type plugging piece 5, so that the column type plugging piece 5 is locked.

The top of columnar blocking piece 5 is pasted with rubber gasket 4, and the one end that cylindrical blocking piece 5 was kept away from to rubber gasket 4 touches mutually with embedded sleeve 1's top.

During the use, have good anti-skidding performance through rubber gasket 4 self for when the top of post type shutoff piece 5 and buried sleeve 1 in advance contacted, frictional force between the two obtains promoting, and then reduces its phenomenon that appears sliding.

And the bottom of columnar plugging piece 5 is fixed with limiting plate 6 to all be equipped with intercommunication groove 7 on the two lateral walls of limiting plate 6, all be equipped with embedded structure 10 on the outer wall of embedded sleeve 1 both sides, embedded structure 10 is equipped with two sets ofly, and adjacent embedded structure 10 is symmetrical about embedded sleeve 1's central line, has improved the anchorage performance of shutoff construction system.

The inside of embedded structure 10 is equipped with lead screw 1001, handle 1002, spiral cap 1003 and fastening seat 1004 in proper order, all is fixed with fastening seat 1004 on the outer wall of embedded sleeve 1 both sides, and the one end that embedded sleeve 1 was kept away from to fastening seat 1004 is fixed with spiral cap 1003, and the inside threaded connection of spiral cap 1003 has lead screw 1001, and the one end of lead screw 1001 extends to the outside of spiral cap 1003, and the handle 1002 is installed to the one end that fastening seat 1004 was kept away from to lead screw 1001.

During the use, through setting up the screw cap 1003 on the outer wall that fastening seat 1004 kept away from buried sleeve 1 one side, because of fastening seat 1004 keep away from the one end of screw cap 1003 and buried sleeve 1's outer wall fixed connection, and adjacent fastening seat 1004 symmetry sets up on buried sleeve 1's both sides outer wall, make two sets of screw caps 1003 be symmetrical structure, and install handle 1002 in the one end of lead screw 1001 again, calibrate the one end of lead screw 1001 in the inside of screw cap 1003 this moment, twist grip 1002 can be with the inside of lead screw in to screw cap 1003, improve the anchorage intensity between buried sleeve 1 and the assembled outer wall.

An adhesive 19 is arranged on one side inside the column type plugging piece 5, flame retardant particles 20 are arranged inside the column type plugging piece 5 on one side of the adhesive 19, flame retardant polycarbonate particles 18 are arranged inside the column type plugging piece 5 on one side of the adhesive 19 away from the flame retardant particles 20, second aluminum alloy sheet bodies 17 are arranged inside the column type plugging piece 5 on one side of the flame retardant polycarbonate particles 18 away from the adhesive 19, preset cavities 21 are arranged inside the column type plugging piece 5 on one side of the second aluminum alloy sheet bodies 17 away from the flame retardant polycarbonate particles 18, second supporting pieces 14 with equal intervals are arranged inside the preset cavities 21, two ends of each second supporting piece 14 are fixedly connected with the inner wall of the preset cavity 21, first supporting pieces 11 are arranged inside the preset cavities 21 between the adjacent second supporting pieces 14, first connecting pieces 12 are fixed at two ends of each first supporting piece 11, one end of each first connecting piece 12 away from the first supporting piece 11 is fixedly connected with the outer wall of the preset cavity 21, and the two outer side walls of the first supporting member 11 are both provided with a second connecting member 13, and one end of the second connecting member 13 far away from the first supporting member 11 is fixedly connected with the outer wall of the second supporting member 14.

During the use, set up first support piece 11 equidistant in the inside of presetting chamber 21 through first connecting piece 12, and set up equidistant in the inside of presetting chamber 21 with second support piece 14 to be connected second support piece 14 and first support piece 11 through second connecting piece 13, make it stabilize and set up and support first aluminum alloy sheet body 15 and second aluminum alloy sheet body 17 in the inside of presetting chamber 21.

And preset the inside first aluminum alloy lamellar body 15 that is equipped with of the columnar blocking piece 5 that chamber 21 kept away from second aluminum alloy lamellar body 17 one side, first aluminum alloy lamellar body 15 keeps away from the inside steel lamellar body 16 that is equipped with of columnar blocking piece 5 that presets chamber 21 one side.

The working principle is as follows: when the plugging construction system is used, firstly, the locking block body 9 is calibrated at the position of the strip-shaped positioning groove 3 and the column-shaped plugging piece 5 is pushed, so that the locking block body 9 slides to the top of the strip-shaped positioning groove 3, the column-shaped plugging piece 5 is installed in the pre-buried sleeve 1, at the moment, the column-shaped plugging piece 5 is slightly rotated, because the locking groove body 8 is arranged at one end of the strip-shaped positioning groove 3, the locking groove body 8 is communicated with the strip-shaped positioning groove 3, the locking block body 9 can move to the inside of the locking groove body 8 from the inside of the strip-shaped positioning groove 3, the communication groove 7 arranged on the outer wall at the two sides of the limiting plate 6 and the strip-shaped positioning groove 3 are in a horizontal structure, then one end of the positioning strip 2 penetrates through the communication groove 7 and is inserted into the strip-shaped positioning groove 3, the column-shaped plugging piece 5 can be positioned in the pre-buried sleeve 1, and the phenomenon that the column-shaped plugging piece 5 slides in the, the stability of the plugging construction system during use is ensured, then the screw caps 1003 are arranged on the outer wall of the fastening seat 1004 far away from one side of the embedded sleeve 1, one end of the fastening seat 1004 far away from the screw cap 1003 is fixedly connected with the outer wall of the embedded sleeve 1, the adjacent fastening seats 1004 are symmetrically arranged on the outer walls of the two sides of the embedded sleeve 1, so that two groups of screw caps 1003 are in a symmetrical structure, the handle 1002 is arranged at one end of the screw rod 1001, one end of the screw rod 1001 is calibrated in the screw cap 1003 at the moment, the screw rod 1001 can be screwed into the screw cap 1003 by rotating the handle 1002, the anchoring strength between the embedded sleeve 1 and an assembled outer wall is improved, finally the flame retardant particles 20 and the flame retardant polycarbonate particles 18 are adhered to one side of the inside of the column-type plugging piece 5 through the adhesive 19, and the flame retardant particles 20 and the flame retardant polycarbonate particles 18 have good flame retardant performance, the column type plugging piece 5 can isolate the high temperature outside, the heat energy is reduced to carry out the transmission treatment, the phenomena of cracks and the like are further reduced, the surface of the column type plugging piece 5 has certain toughness strength through the good wear-resisting property of the steel sheet body 16, meanwhile, the first supporting pieces 11 are arranged in the preset cavity 21 at equal intervals through the first connecting pieces 12, the second supporting pieces 14 are arranged in the preset cavity 21 at equal intervals, the second supporting pieces 14 are connected with the first supporting pieces 11 through the second connecting pieces 13, the column type plugging piece is stably arranged in the preset cavity 21 to support the first aluminum alloy sheet body 15 and the second aluminum alloy sheet body 17, the compression resistance of the column type plugging piece 5 is improved because the first aluminum alloy sheet body 15 and the second aluminum alloy sheet body 17 have good toughness strength, and the phenomena of cracks generated by the column type plugging piece 5 are further reduced, the service life of the plugging construction system is prolonged, and therefore the plugging construction system is used.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a construction system for quick shutoff of assembled outer wall construction entrance to a cave, includes buried sleeve (1), post type shutoff piece (5), limiting plate (6), intercommunication groove (7) and adhesive (19), its characterized in that: the fire-retardant coating is characterized in that a column-shaped plugging piece (5) is installed at the center of the interior of the embedded sleeve (1), the bottom end of the column-shaped plugging piece (5) extends to the exterior of the embedded sleeve (1), a limiting plate (6) is fixed at the bottom end of the column-shaped plugging piece (5), communicating grooves (7) are formed in two outer side walls of the limiting plate (6), embedded structures (10) are arranged on the outer walls of two sides of the embedded sleeve (1), an adhesive (19) is arranged on one side of the interior of the column-shaped plugging piece (5), fire-retardant particles (20) are arranged in the column-shaped plugging piece (5) on one side of the adhesive (19), fire-retardant polycarbonate particles (18) are arranged in the column-shaped plugging piece (5) on one side of the adhesive (19) away from the fire-retardant particles (20), and second aluminum alloy sheet bodies (17) are arranged in the column-shaped plugging piece (5) on one side of the adhesive (19) away from the, and the inside of the columnar blocking piece (5) on one side, far away from the flame-retardant polycarbonate particles (18), of the second aluminum alloy sheet body (17) is provided with a preset cavity (21), the inside of the columnar blocking piece (5) on one side, far away from the second aluminum alloy sheet body (17), of the preset cavity (21) is provided with a first aluminum alloy sheet body (15), and the inside of the columnar blocking piece (5) on one side, far away from the preset cavity (21), of the first aluminum alloy sheet body (15) is provided with a steel sheet body (16).

2. The construction system for rapidly plugging the fabricated exterior wall construction hole according to claim 1, wherein: the embedded sleeve is characterized in that strip-shaped positioning grooves (3) are formed in two inner side walls of the embedded sleeve (1), positioning strips (2) are arranged inside the strip-shaped positioning grooves (3), and the bottom ends of the positioning strips (2) extend to the outer portions of the strip-shaped positioning grooves (3) and penetrate through the inner portions of the communication grooves (7).

3. The construction system for rapidly plugging the fabricated exterior wall construction hole according to claim 2, wherein: the inner wall of the embedded sleeve (1) on one side of the strip-shaped positioning groove (3) is provided with a locking groove body (8), a locking block body (9) is arranged inside the locking groove body (8), and one end of the locking block body (9) extends to the outside of the locking groove body (8) and is fixedly connected with the outer wall of the column-shaped plugging piece (5).

4. The construction system for rapidly plugging the fabricated exterior wall construction hole according to claim 1, wherein: the top of the column type plugging piece (5) is pasted with a rubber gasket (4), and one end, far away from the column type plugging piece (5), of the rubber gasket (4) is in contact with the top of the embedded sleeve (1).

5. The construction system for rapidly plugging the fabricated exterior wall construction hole according to claim 1, wherein: the embedded structures (10) are arranged in two groups, and the adjacent embedded structures (10) are symmetrical about the center line of the embedded sleeve (1).

6. The construction system for rapidly plugging the fabricated exterior wall construction hole according to claim 1, wherein: the embedded structure is characterized in that a screw rod (1001), a handle (1002), a screw cap (1003) and a fastening seat (1004) are sequentially arranged inside the embedded structure (10), the fastening seats (1004) are fixed on the outer walls of two sides of the embedded sleeve (1), and the screw cap (1003) is fixed at one end, far away from the embedded sleeve (1), of the fastening seat (1004).

7. The construction system for rapidly plugging the fabricated exterior wall construction hole according to claim 6, wherein: the internal thread of the screw cap (1003) is connected with a screw rod (1001), one end of the screw rod (1001) extends to the outside of the screw cap (1003), and the handle (1002) is installed at one end, far away from the fastening seat (1004), of the screw rod (1001).

8. The construction system for rapidly plugging the fabricated exterior wall construction hole according to claim 1, wherein: the inside of presetting chamber (21) is equipped with equidistant second support piece (14), the both ends of second support piece (14) all with preset the inner wall fixed connection of chamber (21), and preset chamber (21) inside between adjacent second support piece (14) all is equipped with first support piece (11), the both ends of first support piece (11) all are fixed with first connecting piece (12), the one end that first support piece (11) were kept away from in first connecting piece (12) and the outer wall fixed connection of presetting chamber (21), and all be equipped with second connecting piece (13) on two lateral walls of first support piece (11), the one end that first support piece (11) were kept away from in second connecting piece (13) and the outer wall fixed connection of second support piece (14).