CN117144978A - Movable shrinkage shaping template hanging bracket for municipal road inspection well - Google Patents

Abstract

The invention provides a movable shrinkage shaping formwork hanging bracket for a municipal road inspection well, which belongs to the technical field of inspection well hanging brackets, and comprises a supporting frame, an inner mold cylinder barrel and a guide rod, wherein a plurality of universal wheels are fixedly arranged at the bottom of the supporting frame, the inner mold cylinder barrel comprises a plurality of inner mold pieces and elastic steel sheets which are arranged between the adjacent inner mold pieces in a sliding inserting manner, the guide rod is arranged on the supporting frame in a sliding manner, and the inner mold pieces and the elastic steel sheets are wound to form a circular ring shape and are coaxially arranged on the circumference of the guide rod; the device has strong adaptability, can be used for quickly replacing and reinforcing inspection wells with various specifications and sizes, and has high construction efficiency.

Description

Movable shrinkage shaping template hanging bracket for municipal road inspection well

Technical Field

The invention relates to the technical field of inspection well hanging frames, in particular to a movable shrinkage shaping template hanging frame for an inspection well of a municipal road.

Background

The urban road has the characteristics of large traffic flow, congestion and frequent major and minor repair of roads, along with the fact that pipelines are concentrated in the roads, inspection wells are numerous, along with the continuous increase of the traffic flow and the increasing of the load of a single vehicle, tens of thousands of inspection wells loose and sink seriously each year, and the inspection wells are cracked, so that noise, a phenomenon of 'jumping over' is generated, and driving safety is endangered.

In the prior art, in order to avoid normal traffic of vehicles in large and medium repair and reconstruction of urban roads, construction is generally selected at night, the time for reinforcing and replacing a pavement inspection well is more intense, and the traditional method for reinforcing the inspection well adopts a balance beam type mode.

Disclosure of Invention

The invention aims to provide a movable shrinkage shaping template hanging bracket for a municipal road inspection well, which can be used for rapidly replacing, reinforcing and improving the construction efficiency of the inspection well.

The embodiment of the invention is realized by the following technical scheme: the movable shrinkage shaping template hanging bracket for the municipal road inspection well comprises a supporting frame, an inner mold cylinder barrel and a guide rod, wherein a plurality of universal wheels are fixedly arranged at the bottom of the supporting frame, the inner mold cylinder barrel comprises a plurality of inner mold pieces and elastic steel sheets which are arranged between the adjacent inner mold pieces in a sliding insertion manner, the guide rod is arranged on the supporting frame in a sliding manner, a plurality of inner mold pieces and the plurality of elastic steel sheets encircle to form a circular ring and are coaxially arranged on the circumference of the guide rod, and the movable shrinkage shaping template hanging bracket also comprises a driving assembly, a hoisting assembly, a lifting assembly and a safety assembly; the hoisting assembly is used for hoisting the reinforcement cage and positioning the position of the reinforcement cage; the lifting assembly is used for controlling the inner die cylinder barrel to ascend or descend and fixed at any position after moving; the safety assembly is used for preventing the falling slag or broken stone from entering the inspection well and avoiding damage to pipelines or equipment in the inspection well.

Further, the support frame includes rectangular frame and fixed bracing piece that sets up in rectangular frame four corners, the universal wheel corresponds fixed setting on the bracing piece, still be provided with adjusting part on the rectangular frame, adjusting part includes first framework, axis of rotation, roof and rotating member, the coaxial fixed setting in both sides of first framework the axis of rotation, the axis of rotation on the first framework rotates and sets up on rectangular frame, the both sides of roof also coaxial fixed setting have the axis of rotation, the axis of rotation on the roof rotates and sets up on the first framework, the axis of rotation on the first framework sets up with the axis of rotation mutually perpendicular on the roof, simultaneously the guide bar wears to establish on the roof, rotating member is provided with two sets of and is used for driving first framework, roof respectively and rotates and be fixed to the arbitrary angle after rotating along the axis of rotation that self corresponds.

Further, the two rotating parts comprise support plates, worm wheels, worms and handles, the support plates are correspondingly and fixedly arranged on the rectangular frame and the first frame, the worm wheels are correspondingly and coaxially fixedly arranged on rotating shafts on the first frame and the top plate, the worms are meshed with the worm wheels, the worms are correspondingly and rotatably arranged on the support plates on the rectangular frame and the first frame, and the handles are fixedly arranged on the worms and used for driving the worms to rotate.

Further, drive assembly and interior die piece one-to-one, drive assembly all includes rodless electric jar, guide bar, the cylinder body of rodless electric jar is fixed to be set up on the guide bar, the piston rod and the interior die piece fixed connection of rodless electric jar, rodless electric jar and guide bar mutually perpendicular set up, the guide bar is flexible setting and both ends fixed setting respectively on die and guide bar, every rodless electric jar and the guide bar on the interior die piece are parallel to each other set up.

Further, the hoisting assembly is provided with four groups and evenly sets up in the both sides of roof, the hoisting assembly is all including fixed cylinder, dead lever, screw rod and trip, every all fixedly on the fixed cylinder be provided with the slider, the cross-section of slider is the dovetailed, the spout with slider one-to-one is seted up to the both sides of roof, slider sliding connection is in the spout, the last screw thread of slider is worn to be equipped with the locating bolt of butt to on the spout, the dead lever slip grafting is in on the diapire of fixed cylinder, the screw rod rotates along the length direction of fixed cylinder and connects in fixed cylinder, outside the fixed cylinder was worn to establish to the one end that the dead lever was kept away from to the screw rod, screw rod and dead lever threaded connection, trip fixed connection is on the dead lever and be used for hooking the steel reinforcement cage.

Further, the lifting assembly comprises a winch, the winch is fixedly arranged on the top plate, a safety plate is fixedly arranged at the position, above the inner die cylinder barrel, of the guide rod, and a steel wire rope of the winch is fixedly connected with the safety plate.

Further, the safety assembly comprises a miniature air pump, an air bag and a pipeline, wherein the guide rod is in a hollow arrangement, the miniature air pump is fixedly arranged on the top plate, a reinforcing plate is fixedly arranged on the bottom wall of the guide rod, the air bag is fixedly arranged on the reinforcing plate, one end of the pipeline is communicated with the miniature air pump, and the other end of the pipeline penetrates out along the hollow position of the guide rod and is mutually communicated with the air bag.

The technical scheme of the embodiment of the invention has at least the following advantages and beneficial effects:

1. according to the invention, the driving assembly, the hoisting assembly, the lifting assembly and the safety assembly are arranged on the supporting frame, wherein the driving assembly can adjust the diameter of the inner mold cylinder barrel according to the diameter of the shaft by driving the inner mold piece and the elastic steel piece to be tightly attached to the shaft, the adaptability is improved, an inner supporting system is formed, grouting materials are quickly and effectively blocked from entering the shaft, compared with the traditional steel piece or composite material bending and supporting screw rod matching mode, the hoisting assembly can be used for adjusting the height of the reinforcement cage more simply and quickly, so that the reinforcement cage can be conveniently placed to the proper height of the well ring, the lifting assembly can be used for quickly adjusting the height of the inner mold cylinder barrel and placed to the proper position of the shaft, the safety assembly can prevent dropping slag or broken stone into the inspection well and avoid damaging the pipeline or equipment in the inspection well, so that the reinforcement cage is hung by utilizing an integral rectangular frame, the hoisting cage is hung, the inner mold barrel of the well ring is quickly supported by the four hoisting cages after manual pushing and positioning, the whole construction process is replaced, the whole construction is highly efficient, the manual assembly is performed, and the semi-automatic assembly process is also carried out.

2. According to the invention, the angle of the inner die cylinder barrel can be changed according to the position or inclination of the shaft by arranging the adjusting component so as to adapt to the position of the shaft and improve the adaptability of the whole template hanging bracket, and the position of the inner die cylinder barrel can be fixed after the worm wheel and the worm have a self-locking function and the handle is stopped to rotate, so that the adjusting mode is simple and very convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of a movable shrinkage shaping template hanger for a municipal road inspection well;

FIG. 2 is a schematic view showing the internal structure of the adjusting assembly and the inner die cylinder;

FIG. 3 is a schematic diagram of the structure of the present invention for showing the inner die, the elastic steel sheet and the driving assembly;

fig. 4 is an exploded view of the present invention for showing a lifting assembly.

Icon: the device comprises a 1-supporting frame, a 11-rectangular frame, a 12-supporting rod, a 13-universal wheel, a 14-guiding rod, a 141-safety plate, a 142-reinforcing plate, a 2-inner die cylinder, a 21-inner die, a 22-elastic steel sheet, a 3-driving component, a 31-rodless electric cylinder, a 32-guiding rod, a 4-hoisting component, a 41-fixing cylinder, a 411-sliding block, a 412-positioning bolt, a 42-fixing rod, a 43-screw, a 431-hexagonal screwing head, a 44-lifting hook, a 5-lifting component, a 51-hoisting machine, a 511-steel wire rope, a 6-safety component, a 61-miniature air pump, a 62-air bag, a 63-pipeline, a 7-adjusting component, a 71-first frame, a 72-rotating shaft, a 73-top plate, a 731-sliding chute, a 74-rotating component, a 741-supporting plate, a 742-worm wheel, a 743-worm and a 744-handle.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Examples

The invention is further described below with reference to specific embodiments, referring to fig. 1-4, the invention is a movable shrinkage shaping formwork hanger for municipal road inspection shaft, comprising a supporting frame 1, an inner mold cylinder 2 and a guide rod 14, wherein the supporting frame 1 comprises a rectangular frame 11 and supporting rods 12 fixedly welded at four corners of the rectangular frame 11, four universal wheels 13 are correspondingly and fixedly installed at the bottom of the supporting rods 12, the inner mold cylinder 2 comprises a plurality of inner mold plates 21 and elastic steel sheets 22 slidably inserted between the adjacent inner mold plates 21, the elastic steel sheets 22 have certain elasticity, when the plurality of inner mold plates 21 are simultaneously spread or folded, the elastic steel sheets 22 can deform to normally spread or fold the plurality of inner mold plates 21, the guide rod 14 is slidably arranged on a top plate 73, in the embodiment, the section of the guide rod 14 is circular, the inner mold cylinder 2 can be rotated to a certain extent, the guide rod 14 can be conveniently and tightly attached to a shaft, in other embodiments, the section of the guide rod 14 can be square, the guide rod 14 and the top plate 73 are mutually perpendicular, and the plurality of inner mold plates 21 and the plurality of elastic steel sheets 22 are coaxially arranged in a surrounding manner to form a ring-shaped manner, and the ring-shaped inner mold plates 21 are circumferentially arranged on the guide rod 21, and the lifting assembly comprises a driving assembly and a lifting assembly 6, and a lifting assembly 6;

referring to fig. 1 and 2, in order to adjust the angle of the inner mold cylinder 2 according to the inclination angle of the shaft, the rectangular frame 11 is further provided with an adjusting component 7, the adjusting component 7 includes a first frame 71, a rotating shaft 72, a top plate 73 and a rotating member 74, the rotating shaft 72 is coaxially fixed and welded on both sides of the first frame 71, the rotating shaft 72 on the first frame 71 is rotatably inserted and welded on both sides of the top plate 73, the rotating shaft 72 on the top plate 73 is rotatably inserted and arranged on the first frame 71, the rotating shaft 72 on the first frame 71 and the rotating shaft 72 on the top plate 73 are mutually perpendicular, the rotating member 74 is provided with two groups for driving the first frame 71 and the top plate 73 to rotate along the corresponding rotating shaft 72 and is fixed to any angle after rotation, the two rotating members 74 each include a support plate 741, a worm wheel 742, a worm 743 and a handle 744, the support plate 741 is correspondingly fixed and welded on the rectangular frame 11 and the first frame 71, the rotating shaft 72 is coaxially fixed and welded on the rotating shaft 72 on the top plate 73, the worm wheel 72 is rotatably fixed on the first frame 71, the worm wheel 743 is correspondingly meshed with the worm 743, and the handle 743 is rotatably fixed on the support plate 743 correspondingly, and the handle 743 is rotatably fixed on the top plate 743 correspondingly, and the handle 743 is rotatably fixed on the frame 71.

Referring to fig. 2 and 3, in order to simultaneously control a plurality of inner mold plates 21 to simultaneously stretch and retract and drive the inner mold plates 21 and the elastic steel plates 22 to cling to a shaft, a driving assembly 3 corresponds to the inner mold plates 21 one by one, the driving assembly 3 comprises rodless electric cylinders 31 and guide rods 32, the cylinder bodies of the rodless electric cylinders 31 are fixedly arranged on the guide rods 14, piston rods of the rodless electric cylinders 31 are fixedly connected with the inner mold plates 21, the rodless electric cylinders 31 are mutually perpendicular to the guide rods 14, the guide rods 32 are in stretching arrangement, two ends of the guide rods 32 are respectively fixedly arranged on the inner mold plates 21 and the guide rods 14, in this implementation, the guide rods 32 are provided with two groups and are positioned on two sides of the rodless electric cylinders 31 to promote the supporting force of the inner mold plates 21, and the rodless electric cylinders 31 on each inner mold plate 21 are mutually parallel to the guide rods 32.

Referring to fig. 2 and 4, in order to hoist the reinforcement cage and position the reinforcement cage, hoist assembly 4 is provided with four groups and evenly installs in the both sides of roof 73, hoist assembly 4 all includes fixed barrel 41, dead lever 42, screw 43 and trip 44, the cross-section of fixed barrel 41 is square, all fixedly provided with slider 411 on each fixed barrel 41, the cross-section of slider 411 is the dovetail shape, the spout 731 that corresponds one by one with slider 411 has been seted up in the both sides of roof 73, slider 411 sliding connection is in spout 731, the locating bolt 412 of butt on spout 731 is worn to the screw thread on the slider 411, can fix or release the position of slider 411 through twisting the locating bolt 412, and the plane that dead lever 41 and roof 73 are mutually perpendicular, the dead lever 42 slides and pegs graft on the diapire of fixed barrel 41, screw 43 rotates along the length direction of fixed barrel 41 and connects in the fixed barrel 41, the one end that screw 43 kept away from dead lever 42 wears to set up outside fixed barrel 41 and welds hexagonal screw 431, in order to conveniently twist and turn around the rotation of adjusting screw 43 and trip 42 and connect in order to adjust the height of the hook 42 and fix the reinforcement cage 44 in order to adjust the height of the hook cage 42.

Referring to fig. 1 and 2, in order to control the inner die cylinder 2 to ascend or descend and be fixed to an arbitrary position after movement, the lifting assembly 5 includes a hoist 51, the hoist 51 is fixedly installed on the top plate 73, a safety plate 141 is fixedly welded at a position of the guide rod 14 above the inner die cylinder 2, the safety plate 141 has a circular plate shape, people or sundries can be prevented from falling into the inspection well, a wire rope 511 of the hoist 51 passes through the top plate 73 to be fixedly welded with the safety plate 141, and a motor of the hoist 51 is a stepping motor, and the inner die cylinder 2 can be conveniently controlled to ascend or descend due to the function of precisely controlling the release or furl length of the wire rope 511 and the self-locking function of the stepping motor.

Referring to fig. 1 and 2, in order to prevent the dropping of the residue or broken stone into the manhole and to avoid the damage to the pipeline or equipment in the manhole, the safety assembly 6 includes a micro air pump 61, an air bag 62 and a pipe 63, the guide rod 14 is hollow, the micro air pump 61 is fixedly mounted on the top plate 73, the bottom wall of the guide rod 14 is fixedly welded with a reinforcing plate 142, the reinforcing plate 142 is circular plate-shaped, the air bag 62 is fixedly bonded on the reinforcing plate 142, the reinforcing plate 142 can support the air bag 62, one end of the pipe 63 is communicated with the micro air pump 61, the other end of the pipe 63 penetrates out along the hollow position of the guide rod 14 and is communicated with the air bag 62, the air bag 62 can be inflated by starting the air pump, and the air bag 62 can be abutted on the inner wall of the shaft after being inflated, thereby preventing the dropping of the residue or broken stone into the manhole and avoiding the damage to the pipeline or equipment in the manhole.

The working process of the embodiment is as follows: firstly, checking and maintaining equipment before entering a construction site, ensuring normal use, carrying out traffic guidance on the periphery of an inspection well to be reinforced strictly according to the requirements of traffic management wholesale so as to ensure enough operation space and not to influence normal traffic of social vehicles, after entering, carrying out drilling and milling on a ring groove for placing a reinforcement cage around the inspection well, keeping concentric circles between a drilling and milling area drilled by a cutter head of a drilling and milling machine and a well cover, drawing lines on the ground by a special person before milling, keeping fit with the lines drawn on the ground when a driver of the milling machine falls down, placing a reinforcement cage in the drilled and milled ring groove after drilling and milling is completed, and ensuring that the circle center of the reinforcement cage is coaxial with the circle center of a shaft;

after the hanger is manually pushed to the inspection wellhead for positioning, the steel reinforcement cage is hung by the four hanging hooks 44 to hook the steel reinforcement cage, the hexagonal screwing head 431 is rotated, the height of the proper steel reinforcement cage is adjusted and fixed, then a winch 51 is started to adjust the height of the inner die cylinder barrel 2 and then fixed, a rodless cylinder is started to drive an inner die 21 to support the inner wall of the shaft and form an inner supporting system, grouting materials are quickly and effectively prevented from entering the inspection well, and concrete is poured into a ring groove drilled and milled in the inspection wellhead, so that the inspection well is replaced and reinforced;

when the shaft has a certain inclination, the handle 744 on the rectangular frame 11 can be manually rotated to drive the worm 743, the worm wheel 742 and the first frame 71 to rotate, and the handle 744 on the first frame 71 can be manually rotated to drive the worm 743, the worm wheel 742 and the top plate 73 to rotate, so that the angle of the inner die cylinder 2 is changed to adapt to the position of the shaft, and the adaptability of the whole die plate hanger is improved.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (7)

1. The utility model provides a portable shrink design template gallows of municipal road inspection shaft which characterized in that: the novel steel wire rope guide device comprises a support frame (1), an inner die cylinder barrel (2) and a guide rod (14), wherein a plurality of universal wheels (13) are fixedly arranged at the bottom of the support frame (1), the inner die cylinder barrel (2) comprises a plurality of inner dies (21) and elastic steel sheets (22) which are arranged between the adjacent inner dies (21) in a sliding insertion mode, the guide rod (14) is arranged on the support frame (1) in a sliding mode, a plurality of inner dies (21) and the plurality of elastic steel sheets (22) encircle to form a circular ring shape and are coaxially arranged on the periphery of the guide rod (14), and the novel steel wire rope guide device further comprises a driving assembly (3), a hoisting assembly (4), a lifting assembly (5) and a safety assembly (6);

the driving assembly (3) is used for controlling the inner dies (21) to stretch and retract simultaneously and driving the inner dies (21) and the elastic steel sheet (22) to cling to the shaft;

the hoisting assembly (4) is used for hoisting the reinforcement cage and positioning the position of the reinforcement cage;

the lifting assembly (5) is used for controlling the inner die cylinder barrel (2) to ascend or descend and is fixed at any position after moving;

the safety assembly (6) is used for preventing the falling of the slag or broken stone into the inspection well and avoiding damage to pipelines or equipment in the inspection well.

2. The movable shrinkage and sizing formwork hanger for municipal road inspection shafts according to claim 1, wherein: the support frame (1) includes rectangular frame (11) and fixed bracing piece (12) that set up in rectangular frame (11) four corners, universal wheel (13) correspond fixed setting on bracing piece (12), still be provided with on rectangular frame (11) adjusting part (7), adjusting part (7) are including first framework (71), axis of rotation (72), roof (73) and rotating member (74), the both sides coaxial fixed of first framework (71) are provided with axis of rotation (72), axis of rotation (72) on first framework (71) rotate and set up on rectangular frame (11), the both sides of roof (73) also coaxial fixed be provided with axis of rotation (72), axis of rotation (72) on roof (73) rotate and set up on first framework (71), axis of rotation (72) on first framework (71) and axis of rotation (72) mutually perpendicular setting on roof (73), simultaneously guide bar (14) wear to establish on roof (73), rotating member (74) are provided with two and are used for two sets of rotation (72) to drive arbitrary rotation of roof (73) respectively and are corresponding to rotate one set up to arbitrary rotation (72) of roof.

3. The movable shrinkage and sizing formwork hanger for municipal road inspection shafts according to claim 2, wherein: both rotating parts (74) include extension board (741), worm wheel (742), worm (743) and handle (744), extension board (741) correspond fixed setting on rectangular frame (11), first framework (71), worm wheel (742) correspond coaxial fixed setting on axis of rotation (72) on first framework (71), roof (73), worm (743) and worm wheel (742) intermeshing, worm (743) correspond rotate set up on rectangular frame (11), extension board (741) on first framework (71), handle (744) are fixed to be set up on worm (743) and are used for driving worm (743) rotation.

4. The movable shrinkage and shaping formwork hanger for municipal road inspection shaft according to claim 3, wherein: the driving assembly (3) is in one-to-one correspondence with the inner die pieces (21), the driving assembly (3) comprises rodless electric cylinders (31) and guide rods (32), cylinder bodies of the rodless electric cylinders (31) are fixedly arranged on the guide rods (14), piston rods of the rodless electric cylinders (31) are fixedly connected with the inner die pieces (21), the rodless electric cylinders (31) and the guide rods (14) are perpendicular to each other, the guide rods (32) are arranged in a telescopic mode, two ends of the guide rods are respectively fixedly arranged on the inner die pieces (21) and the guide rods (14), and the rodless electric cylinders (31) on each inner die piece (21) are arranged in parallel with the guide rods (32).

5. The movable shrinkage and sizing formwork hanger for municipal road inspection shafts according to claim 2, wherein: the utility model provides a hoist and mount subassembly (4) are provided with four and evenly set up in the both sides of roof (73), hoist and mount subassembly (4) all include fixed section of thick bamboo (41), dead lever (42), screw rod (43) and trip (44), every all fixedly on fixed section of thick bamboo (41) be provided with slider (411), the cross-section of slider (411) is the dovetailed, spout (731) with slider (411) one-to-one is seted up in the both sides of roof (73), slider (411) sliding connection is in spout (731), threaded wearing to be equipped with positioning bolt (412) on butt to spout (731) on slider (411), dead lever (42) sliding grafting is in on the diapire of fixed section of thick bamboo (41), screw rod (43) are rotated along the length direction of fixed section of thick bamboo (41) and are connected in fixed section of thick bamboo (41), screw rod (43) are kept away from the one end of dead lever (42) and are worn out fixed section of thick bamboo (41), screw rod (43) and trip (42) threaded connection, trip (44) are fixed in fixed on reinforcing bar (42).

6. The movable shrinkage and sizing formwork hanger for municipal road inspection shafts according to claim 2, wherein: the lifting assembly (5) comprises a winch (51), the winch (51) is fixedly arranged on the top plate (73), a safety plate (141) is fixedly arranged at the position, above the inner die cylinder barrel (2), of the guide rod (14), and a steel wire rope (511) of the winch (51) is fixedly connected with the safety plate (141).

7. The movable shrinkage and sizing formwork hanger for municipal road inspection shafts according to claim 2, wherein: the safety assembly (6) comprises a miniature air pump (61), an air bag (62) and a pipeline (63), wherein the guide rod (14) is in a hollow structure, the miniature air pump (61) is fixedly arranged on the top plate (73), a reinforcing plate (142) is fixedly arranged on the bottom wall of the guide rod (14), the air bag (62) is fixedly arranged on the reinforcing plate (142), one end of the pipeline (63) is communicated with the miniature air pump (61), and the other end of the pipeline is penetrated out along the hollow position of the guide rod (14) and is mutually communicated with the air bag (62).