CN111472432B - Anti-blocking sewer pipeline structure - Google Patents

Abstract

The invention discloses an anti-blocking sewer pipe structure, which comprises a settling well arranged underground, wherein a jacking device is arranged in the settling well, the jacking device comprises a well cover groove which is communicated with the upper wall of the settling well and has an upward opening, a well cover is arranged in the well cover groove in a vertically sliding manner, the lower wall of the well cover groove is bilaterally symmetrical and is communicated with a push rod cavity, a push rod is arranged in the push rod cavity in a vertically sliding manner, the upper end of the push rod extends into the well cover groove and is fixedly connected with the lower end surface of the well cover, an intercepting device is arranged at the lower side of the settling well, and a collecting device is arranged above the intercepting device. Effectively avoiding the condition that the drainage system is interrupted due to the blockage of the sewer pipeline.

Description

Anti-blocking sewer pipeline structure

Technical Field

The invention relates to the technical field of drainage systems, in particular to an anti-blocking sewer pipeline structure.

Background

The drainage system is an important infrastructure of modern cities, water is used in daily life and production activities of people, the water is polluted in the using process and becomes sewage which needs to be treated and discharged, in addition, the rainfall in the cities has large runoff flow, the drainage speed is insufficient when the rainfall is discharged in time, the well cover is always flushed to cause accidents of pedestrians, and once a sewer pipeline is blocked, the drainage system in a large area is paralyzed to greatly influence the drainage system. The present invention sets forth a device that solves the above problems.

Disclosure of Invention

The technical problem is as follows: when the precipitation is large, the drainage speed is insufficient, the well lid is often washed away to cause the pedestrian to have an unexpected tragedy, and once the sewer pipe is blocked, the drainage system of a large area is paralyzed.

In order to solve the problems, the anti-blocking sewer pipe structure is designed in the embodiment, and comprises a settling well arranged underground, wherein a jacking device is arranged in the settling well and comprises a well cover groove which is communicated with the upper wall of the settling well and has an upward opening, well covers are arranged in the well cover groove in a vertically sliding manner, the lower wall of the well cover groove is bilaterally symmetrical and is communicated with a jacking rod cavity, jacking rods are arranged in the jacking rod cavity in a vertically sliding manner, the upper ends of the jacking rods extend into the well cover groove and are fixedly connected to the lower end surface of the well cover, a first spring is fixedly connected between the jacking rods and the lower wall of the jacking rod cavity, when the drainage speed of the well cover is insufficient, the jacking rods slide upwards to jack the well cover, rainwater mixed impurities are directly drained from the settling well, and an intercepting device is arranged on the lower side of the settling well, intercepting device locates including the intercommunication subside well left and right wall downside drainage pipe, the fixed first block net that is equipped with of drainage pipe inner wall, drainage pipe circumference wall just is located and is close to one side intercommunication of subside well is equipped with first lift chamber, gliding about first lift intracavity is equipped with the elevator, what link up about on the elevator is equipped with the ascending spread groove of opening, fixed being equipped with the fixed axle before the spread groove between the back wall, can pivoted on the fixed axle is equipped with and holds back the piece, hold back about being equipped with that link up on the piece with drainage pipe radius equals holds back the chamber, works as when the elevator is in lower extreme position, hold back the chamber with drainage pipe aligns the intercommunication, the intercepting device top is equipped with collection device, collection device is used for going out the debris lift of collecting. Preferably, the jacking device comprises a fixture block cavity which is arranged at the lower end of the ejector rod at the left side and the right side and has opposite opening directions, a fixture block is arranged in the fixture block cavity and can slide left and right, a second spring is fixedly connected between the fixture block and the inner wall of the fixture block cavity, the lower end of the side wall of the ejector rod cavity is communicated with a push rod cavity, one end of the fixture block can extend into the push rod cavity to be clamped, a push rod is arranged in the push rod cavity and can slide left and right, a third spring with elasticity smaller than that of the second spring is fixedly connected between the push rod and the inner wall of the push rod cavity, a first abutting groove with a downward opening is arranged on the lower end surface of the push rod, a first abutting rod cavity is communicated with the lower wall of the push rod, a first abutting rod is arranged in the first abutting groove in a vertically sliding manner, the upper end of the first abutting rod can extend into the first abutting groove and push the push rod to, and a fourth spring is fixedly connected between the first abutting rod and the lower wall of the first abutting rod cavity.

Preferably, a support rod is fixedly arranged between the left wall and the right wall of the settling well, the support rod is provided with a sliding groove which is vertically communicated, the sliding groove is internally provided with a sliding rod which can slide up and down, the upper end of the sliding rod is fixedly provided with a floating block above the support rod, the lower end of the sliding rod is fixedly provided with a limiting block below the support rod, the left end surface and the right end surface of the sliding rod are symmetrically provided with second abutting grooves with opposite opening directions, the left wall and the right wall of the sliding groove are symmetrically and communicated with second abutting rod cavities, the second abutting rod which can slide left and right in the second abutting rod cavities is provided with second abutting rods which can extend into the second abutting grooves, when the sliding rod slides upwards and the lower walls of the second abutting grooves abut against the second abutting rods, the second abutting rods can be pushed back into the second abutting rod cavities, and a fifth spring with elasticity larger than that of a fourth spring is fixedly connected between the second abutting rod cavities, and a first pull wire is fixedly connected between one end of the fifth spring on the left side and the opposite end of the fifth spring on the right side and the lower end of the first abutting rod on the same side.

Preferably, the intercepting device comprises a first slider cavity which is symmetrical in the front and back and is communicated with the right side of the front and back wall of the first lifting cavity, a screw rod can be arranged between the upper wall and the lower wall of the first slider cavity in a rotating manner, a motor is fixedly arranged in the lower wall of the first slider cavity, a first slider which is connected with the screw rod in a threaded manner is arranged in the first slider cavity in an up-and-down sliding manner, the first slider is fixedly connected with the lifting block, a storage cavity is arranged in the first lifting cavity in the lower wall of the first lifting cavity in a communicating manner, a blocking plate is arranged in the storage cavity in an up-and-down sliding manner, a second blocking net is arranged on the blocking plate in a left-and-right penetrating manner and is fixedly connected with a sixth spring between the blocking plate and the lower wall of the storage cavity, and a water pressure sensor is fixedly arranged on the left side and the right side of the first blocking net respectively, the water pressure sensor detects and compares the water pressure of the left side and the right side of the first blocking net so as to judge whether the first blocking net is blocked or not.

Preferably, the collection device is located including the intercommunication the second lift chamber of first lift chamber left wall, second lift chamber upper wall intercommunication is equipped with the ascending apron chamber of opening, gliding the being equipped with collecting box about the second lift intracavity, be equipped with opening ascending and opening right collecting vat on the collecting box, first lift chamber upper wall left end is fixed and is equipped with the gag lever post, works as when the ascending and descending piece is slided to extreme position, the gag lever post with hold back piece up end left end and offset, and then hold back the piece upset left, hold back the debris that the intracavity was detained and is toppled over into in the collecting vat.

Preferably, second lift chamber left side wall intercommunication is equipped with second slider chamber, gliding be equipped with fixed connection from top to bottom in the second slider chamber in the second slider chamber, can the pivoted be equipped with the apron before the apron chamber between the wall, be equipped with the coiling chamber in the apron, can the pivoted be equipped with the pivot in the coiling chamber lower wall, the fixed coiling wheel that is equipped with in pivot upper end, on coiling take turns to around be equipped with one end fixed connection in the second of second slider upper end is acted as go-between, the pivot lower extreme extends to apron downside and fixed dead lever that is equipped with, terminal surface right-hand member can the pivoted be equipped with the rocker under the dead lever.

The invention has the beneficial effects that: the invention can automatically jack the well lid when the precipitation is large, increase the drainage speed, avoid the situation that the well lid is opened, reduce the possibility of accidents, intercept sundry garbage and the like in water flow through the intercepting device, lift the intercepted sundries into the collecting tank after judging that the blockage occurs, and effectively avoid the situation that the drainage system is interrupted due to the blockage of a sewer pipe.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

Fig. 1 is a schematic view showing the overall structure of an anti-clogging sewer line structure according to the present invention;

FIG. 2 is a sectional view taken in the direction "A-A" of FIG. 1;

FIG. 3 is an enlarged schematic view of "B" of FIG. 1;

FIG. 4 is an enlarged schematic view of "C" of FIG. 1;

fig. 5 is an enlarged schematic view of "D" of fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-5, for ease of description, the orientations described below will now be defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to an anti-clogging sewer pipe structure, which is mainly applied to cutting ceramic tiles with proper shapes according to requirements in the decoration process, and the invention is further explained by combining the attached drawings of the invention:

the invention relates to an anti-blocking sewer pipe structure, which comprises a settling well 11 arranged underground, wherein a jacking device 101 is arranged in the settling well 11, the jacking device 101 comprises a well cover groove 12 which is communicated with the upper wall of the settling well 11 and has an upward opening, a well cover 13 is arranged in the well cover groove 12 in a manner of sliding up and down, the lower wall of the well cover groove 12 is bilaterally symmetrical and is communicated with a jacking rod cavity 14, a jacking rod 15 is arranged in the jacking rod cavity 14 in a manner of sliding up and down, the upper end of the jacking rod 15 extends into the well cover groove 12 and is fixedly connected with the lower end surface of the well cover 13, a first spring 16 is fixedly connected between the jacking rod 15 and the lower wall of the jacking rod cavity 14, when the drainage speed of the well cover 13 is insufficient, the jacking rod 15 slides up to jack the well cover 13, rainwater mixed impurities are directly drained from the settling well 11, an intercepting device 102, the intercepting device 102 comprises a drainage pipeline 37 communicated with the lower sides of the left and right walls of the settling well 11, a first arresting net 38 is fixedly arranged on the inner wall of the drainage pipeline 37, a first lifting cavity 39 is communicated with one side of the circumferential wall of the drainage pipeline 37, which is close to the settling well 11, the first lifting cavity 39 is provided with a lifting block 40 capable of sliding up and down, the lifting block 40 is provided with a connecting groove 45 with an upward opening and penetrating left and right, a fixed shaft 46 is fixedly arranged between the front wall and the rear wall of the connecting groove 45, an interception block 47 is rotatably arranged on the fixed shaft 46, the interception block 47 is provided with an interception cavity 65 with the radius equal to that of the drainage pipeline 37 in a left-right through way, when the lifting block 40 is in the lower extreme position, the interception chamber 65 is in aligned communication with the drainage duct 37, a collecting device 103 is arranged above the intercepting device 102, and the collecting device 103 is used for lifting the collected sundries out.

Beneficially, as will be described in detail below, the jacking device 101 includes a fixture block cavity 17 with opposite opening directions and disposed at the lower end of the push rod 15 at the left and right sides, a fixture block 18 is disposed in the fixture block cavity 17 and is capable of sliding left and right, a second spring 19 is fixedly connected between the fixture block 18 and the inner wall of the fixture block cavity 17, a push rod cavity 20 is disposed in the lower end of the side wall of the push rod cavity 14 in a communicating manner, one end of the fixture block 18 can extend into the push rod cavity 20 to be clamped, a push rod 21 is disposed in the push rod cavity 20 and is capable of sliding left and right, a third spring 22 with elasticity smaller than that of the second spring 19 is fixedly connected between the push rod 21 and the inner wall of the push rod cavity 20, a first abutting groove 23 with a downward opening is disposed on the lower end face of the push rod 21, a first abutting rod cavity 24 is disposed in the communicating manner, a first abutting rod 25 is disposed in the first abutting rod cavity, the upper end of the first abutting rod 25 can extend into the first abutting groove 23 and push the push rod 21 to slide, so that the push rod 21 pushes the fixture block 18 back into the fixture block cavity 17, and a fourth spring 26 is fixedly connected between the first abutting rod 25 and the lower wall of the first abutting rod cavity 24.

Beneficially, a supporting rod 27 is fixedly arranged between the left wall and the right wall of the settling well 11, the supporting rod 27 is provided with a sliding groove 28 which is vertically through, a sliding rod 29 is arranged in the sliding groove 28 and can slide vertically, a floating block 30 is fixedly arranged at the upper end of the sliding rod 29 and is positioned above the supporting rod 27, a limiting block 32 is fixedly arranged at the lower end of the sliding rod 29 and is positioned below the supporting rod 27, second abutting grooves 31 with opposite opening directions are symmetrically arranged on the left end surface and the right end surface of the sliding rod 29, second abutting rod cavities 33 are symmetrically arranged on the left end surface and the right end surface of the sliding rod 28 and are communicated with each other, a second abutting rod 34 which can slide horizontally in the second abutting groove 31 is arranged in the second abutting rod cavity 33, when the sliding rod 29 slides upwards and the lower wall of the second abutting groove 31 abuts against the second abutting rod 34, the second abutting rod 34 is pushed back into the second abutting rod cavity 33, and a fifth spring 35 with an elastic force which is larger than that of the fourth spring 26 is fixedly connected between the inner wall of the second abutting, a first pull wire 36 is fixedly connected between the opposite end of the fifth spring 35 on the left and right sides and the lower end of the first abutting rod 25 on the same side.

Beneficially, as will be described in detail below, the intercepting device 102 includes a first slider cavity 41 which is symmetrical in front and back and is communicated with the right side of the front and back walls of the first lifting cavity 39, a screw 42 is rotatably disposed between the upper and lower walls of the first slider cavity 41, a motor 43 is fixedly disposed in the lower wall of the first slider cavity 41, a first slider 44 which is connected to the screw 42 in a threaded manner is disposed in the first slider cavity 41 in a vertically slidable manner, the first slider 44 is fixedly connected to the lifting block 40, a storage cavity 48 which is disposed in the same plane as the right wall of the first lifting cavity 39 is communicated with the lower wall of the first lifting cavity 39, a blocking plate 49 is disposed in the storage cavity 48 in a vertically slidable manner, a second blocking net 50 is fixedly disposed on the blocking plate 49 in a left and right penetrating manner, a sixth spring 64 is fixedly connected between the blocking plate 49 and the storage cavity 48, and water pressure sensors 66 are respectively and fixedly arranged on the lower wall of the drainage pipeline 37 and on the left side and the right side of the first barrier net 38, and the water pressure sensors 66 detect and compare the water pressure of the left side and the right side of the first barrier net 38 to judge whether the water is blocked or not.

Beneficially, the following detailed description describes the collecting device 103, the collecting device 103 includes a second lifting cavity 51 communicated with the left wall of the first lifting cavity 39, the upper wall of the second lifting cavity 51 is communicated with a cover plate cavity 52 with an upward opening, a collecting box 53 is arranged in the second lifting cavity 51 and can slide up and down, a collecting groove 54 with an upward opening and a rightward opening is arranged on the collecting box 53, a limiting rod 67 is fixed at the left end of the upper wall of the first lifting cavity 39, when the lifting block 40 slides up to an upper limit position, the limiting rod 67 abuts against the left end of the upper end face of the intercepting block 47, the intercepting block 47 is turned left, and sundries blocked in the intercepting cavity 65 are poured into the collecting groove 54.

Beneficially, second lift chamber 51 left wall intercommunication is equipped with second slider chamber 55, the gliding second slider 56 that is equipped with in second slider chamber 55 about can being in fixed connection with the collecting box 53, can the pivoted apron 57 that is equipped with between the front and back wall of apron chamber 52, be equipped with coiling chamber 58 in the apron 57, can the pivoted pivot 59 that is equipped with in coiling chamber 58 lower wall, the fixed coiling wheel 60 that is equipped with in pivot 59 upper end, around being equipped with one end fixed connection in the second stay wire 61 of second slider 56 upper end on the coiling wheel 60, pivot 59 lower extreme extends to apron 57 downside and fixed dead lever 62 that is equipped with, dead lever 62 lower terminal surface right-hand member can the pivoted rocker 63 that is equipped with.

The following will describe in detail the use steps of an anti-clogging sewer pipe structure herein with reference to fig. 1 to 5: at the beginning, the well lid 13 is in the well lid groove 12, the ejector rod 15 is in the lower limit position, the first spring 16 is in the compressed state, one end of the fixture block 18 extends into the ejector rod cavity 20, the third spring 22 is in the compressed state, the first abutting rod 25 is in the lower limit position, the fourth spring 26 is in the compressed state, the sliding rod 29 is in the lower limit position, one end of the second abutting rod 34 extends into the second abutting groove 31, the lifting block 40, the first sliding block 44 and the blocking plate 49 are in the lower limit position, the upper end of the blocking plate 49 abuts against the lifting block 40, the sixth spring 64 is in the compressed state, and the collecting box 53 second sliding blocks 56 are in the lower limit position.

When the manhole cover 13 is in operation, under the condition of large precipitation, the drainage speed of the manhole cover 13 is insufficient, the water level in the settling well 11 gradually rises, the floating block 30 rises under the buoyancy and pulls the slide rod 29 to slide upwards, the second abutting rod 34 is pushed back into the second abutting rod cavity 33 by the lower wall of the second abutting groove 31 in the process that the slide rod 29 slides upwards, then the first pull wire 36 is loosened, the first abutting rod 25 slides upwards under the action of the fourth spring 26, the upper end of the first abutting rod 25 is inserted into the first abutting groove 23 and pushes the first abutting groove 23 to slide so that the first abutting groove 23 pushes the fixture block 18 back into the fixture block cavity 17, then the top rod 15 slides upwards under the action of the first spring 16 to push the manhole cover 13, so that water mixed with impurities is discharged into the settling well 11 together, the drainage of the road surface is accelerated, the manhole cover 13 is prevented from being washed away by water, the danger caused by the incapability of the pedestrians is avoided, and after the water level in the settling well 11 descends, the slide rod, the second resisting rod 34 resets under the action of the fifth spring 35 and pulls the first resisting rod 25 to slide downwards for resetting, and then the manhole cover 13 can be manually pressed down by a person for resetting.

The impurities entering the drainage pipeline 37 along with the water flow in the settling well 11 are blocked in the interception cavity 65 by the first interception net 38, when the water pressure sensor 66 detects that the water pressures on the left and right sides of the first barrier net 38 are not consistent, it is determined that the pipeline is blocked, then the motor 43 is started to drive the screw rod 42 to rotate, the first slide block 44 is driven to slide up to the upper limit position through the threaded connection, and the lifting block 40 slides up to the upper limit position, when the lifting block 40 slides up, the blocking plate 49 slides upwards under the action of the sixth spring 64 to block the sundries in the water flow out of the first lifting cavity 39, when the lifting block 40 slides up to the upper limit position, the limiting rod 67 pushes the left end of the upper end surface of the interception block 47 to overturn downwards, so that sundries blocked in the interception cavity 65 slide into the collection groove 54, then the motor 43 drives the screw rod 42 to rotate reversely, and the lifting block 40 and the interception block 47 reset to continue intercepting the sundries.

When the sundries in the collecting tank 54 need to be cleaned, the turnover cover plate 57 is unlocked, the rocker 63 is rocked, the rotating shaft 59 rotates to drive the winding wheel 60 to wind the second pull wire 61, the second pull wire 61 pulls the second sliding block 56 upwards, the collecting tank 53 slides upwards, and therefore the sundries in the collecting tank 54 can be cleaned conveniently: the invention can automatically jack the well lid when the precipitation is large, increase the drainage speed, avoid the situation that the well lid is opened, reduce the possibility of accidents, intercept sundry garbage and the like in water flow through the intercepting device, lift the intercepted sundries into the collecting tank after judging that the blockage occurs, and effectively avoid the situation that the drainage system is interrupted due to the blockage of a sewer pipe.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims (1)

1. The utility model provides a prevent sewer pipe structure of jam, is including locating underground sedimentation well, be equipped with jacking system, its characterized in that in the sedimentation well: the jacking device comprises a well cover groove which is communicated with and arranged on the upper wall of the settling well and has an upward opening, the well cover groove can be internally provided with a well cover in a way of sliding up and down, the well cover groove lower wall is bilaterally symmetrical and is communicated with and provided with a mandril cavity, the mandril cavity can be internally provided with a mandril in a way of sliding up and down, the upper end of the mandril extends to the well cover groove and is fixedly connected with the lower end surface of the well cover, a first spring is fixedly connected between the mandril and the lower wall of the mandril cavity, when the drainage speed of the well cover is insufficient, the mandril is used for jacking the well cover up in a sliding way, rainwater mixed sundries are directly drained from the settling well, the lower side of the settling well is provided with an intercepting device which comprises a drainage pipeline communicated and arranged on the lower side of the left wall and the right wall of, the first lifting cavity is internally provided with a lifting block which can slide up and down, the lifting block is provided with a connecting groove with an upward opening in a left-right through manner, a fixed shaft is fixedly arranged between the front wall and the rear wall of the connecting groove, the fixed shaft is provided with a retaining block which can rotate, the retaining block is provided with a retaining cavity which is communicated with the left side and the right side and has the same radius as that of the drainage pipeline, when the lifting block is at the lower limit position, the retaining cavity is communicated with the drainage pipeline in an aligned manner, a collecting device is arranged above the retaining device, and the collecting device is used for lifting collected sundries out; the jacking device comprises a fixture block cavity which is arranged at the lower end of the ejector rod at the left side and the right side and has opposite opening directions, a fixture block is arranged in the fixture block cavity in a way of sliding left and right, a second spring is fixedly connected between the fixture block and the inner wall of the fixture block cavity, the lower end of the side wall of the ejector rod cavity is communicated with a push rod cavity, one end of the fixture block can extend into the push rod cavity to be clamped, a push rod is arranged in the push rod cavity in a way of sliding left and right, a third spring with elasticity smaller than that of the second spring is fixedly connected between the push rod and the inner wall of the push rod cavity, a first abutting groove with a downward opening is arranged at the lower end surface of the push rod, a first abutting rod cavity is communicated with the lower wall of the push rod, a first abutting rod is arranged in the first abutting cavity in a way of sliding up and down, the upper end of the first abutting rod can extend into the, a fourth spring is fixedly connected between the first abutting rod and the lower wall of the first abutting rod cavity; the fixed bracing piece that is equipped with between the wall of subsiding well left and right sides, what link up from top to bottom the bracing piece is equipped with the spout, gliding slide bar about the spout is equipped with from top to bottom, the slide bar upper end just is located the fixed kicking block that is equipped with in bracing piece top, the slide bar lower extreme just is located the fixed stopper that is equipped with in bracing piece below, the slide bar left and right sides terminal surface symmetry is equipped with the second of opening opposite direction and supports the groove, the spout left and right sides wall symmetry and intercommunication are equipped with the second and support the pole chamber, the second supports the pole intracavity can stretch into the second supports the pole in the groove, works as slide on the slide bar just the second supports the groove lower wall with when the second supports the pole to offset, the second supports the pole can be pushed back to the second supports the pole intracavity, the second support the pole with fixedly connected with elasticity is greater than the fifth spring of fourth spring between the pole intracavity wall of second support the pole, the left and right sides the opposite one end of fifth spring and homonymy the first support A first pull wire is arranged; the intercepting device comprises a first slider cavity which is symmetrical in the front and back and is communicated with the right side of the front wall and the back wall of the first lifting cavity, a screw rod can be arranged between the upper wall and the lower wall of the first slider cavity in a rotating manner, a motor is fixedly arranged on the lower wall of the first slider cavity, a first slider which is connected with the screw rod in a threaded manner is arranged in the first slider cavity in an up-and-down sliding manner, the first slider is fixedly connected with the lifting block, a right wall is arranged in the first lifting cavity in a communicating manner and is communicated with a containing cavity in the same plane with the right wall of the first lifting cavity, a blocking plate is arranged in the containing cavity in an up-and-down sliding manner, a second blocking net is arranged on the blocking plate in a left-and-right penetrating manner and is fixedly arranged, a sixth spring is fixedly connected between the blocking plate and the lower wall of the containing cavity, and a drainage pipeline lower, the water pressure sensor detects and compares the water pressure on the left side and the right side of the first blocking net to judge whether the first blocking net is blocked or not; the collecting device comprises a second lifting cavity communicated with the left wall of the first lifting cavity, the upper wall of the second lifting cavity is communicated with a cover plate cavity with an upward opening, a collecting box is arranged in the second lifting cavity and can slide up and down, a collecting tank with an upward opening and a rightward opening is arranged on the collecting box, a limiting rod is fixedly arranged at the left end of the upper wall of the first lifting cavity, when the lifting block slides up to an upper limit position, the limiting rod abuts against the left end of the upper end face of the interception block, the interception block further turns left, and sundries blocked in the interception cavity are dumped into the collecting tank; second lift chamber left side wall intercommunication is equipped with second slider chamber, gliding be equipped with fixed connection from top to bottom in the second slider chamber, can the pivoted be equipped with the apron between the wall before the apron chamber, be equipped with the coiling chamber in the apron, can the pivoted be equipped with the pivot in the coiling chamber lower wall, the fixed winding wheel that is equipped with in pivot upper end, on coiling wheel around be equipped with one end fixed connection in the second of second slider upper end is acted as go-between, the pivot lower extreme extends to apron downside and fixed dead lever that is equipped with, terminal surface right-hand member can the pivoted be equipped with the rocker under the dead lever.

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