CN216520285U - Traction device is restoreed to non-excavation pipeline inside lining - Google Patents

Abstract

The utility model provides a lining repairing traction device for a non-excavation pipeline, which comprises a traction frame, a fixed frame and a plurality of support frames arranged between the fixed frame and the traction frame, wherein the traction frame, the support frames and the fixed frame are sequentially connected in pairs through an extensible connecting rope mechanism, one end of a lining pipe sequentially penetrates through the fixed frame and the support frames to be connected with the traction frame, balls are arranged on the inner surfaces of the fixed frame and the support frames in a surrounding manner, the traction frame and the support frames can slide in an original pipeline, and the fixed frame can be fixed in the original pipeline through a fixing mechanism; the utility model can support the lining pipe in the whole pipeline, effectively avoids the condition that the lining pipe is contacted with the original pipeline to generate abrasion, automatically draws the traction frame and the support frame under the action of the connecting rope mechanism after the traction work is finished, has simple structure and convenient operation, can be repeatedly used, effectively improves the construction efficiency and reduces the construction cost.

Description

Traction device is restoreed to non-excavation pipeline inside lining

Technical Field

The utility model belongs to the technical field of pipeline repair, and particularly relates to a traction device for repairing a lining of a non-excavation pipeline.

Background

Along with the development of urbanization, the construction of drainage pipelines is increased every year, the number of urban underground pipe networks is continuously increased, after the underground pipelines are operated for many years, due to the reasons of insufficient investment in maintenance and repair, the situations of pipeline corrosion, serious leakage, damage deformation, uneven settlement and the like are caused, once the pipelines receive the disturbance of external factors, accidents such as road surface collapse, drainage pipeline burst and the like are easily caused, so that serious economic loss and potential safety hazards are brought, the pipelines are replaced on the whole line, the engineering quantity is huge, the cost is high, the engineering period is long, and the service life of the pipelines is prolonged by adopting a pipeline repairing technology for saving the cost.

The pipeline repairing technology can be divided into an excavation repairing technology and a non-excavation repairing technology according to construction conditions, the non-excavation repairing technology is widely used due to small influence on infrastructure, low maintenance cost, high construction repairing efficiency and good repairing effect, and the ultraviolet curing repairing technology is widely popularized and applied in recent years. The ultraviolet light curing repair technology is that glass fiber hoses are prefabricated in a factory according to the actual situation on site, the glass fiber hoses are pulled into original pipelines to be repaired during site construction, the glass fiber hoses are tightly attached to the original pipelines by utilizing the inflation expansion of an air compressor, the original pipelines are used as outer molds, inner films of the hoses are used as inner liners, and then under the irradiation effect of ultraviolet light of special wave bands for a period of time, resin is cured to form composite inner liner pipes with certain strength, and the composite inner liner pipes are tightly attached to the original pipes to finish the repair.

In order to prevent that interior bushing pipe from being dragged into pipeline in-process and damaging, so lining pipe pavement earlier can lay one deck basement membrane protection film in the pipeline, however, when laying the basement membrane protection film, make the basement membrane protection film take place the skew fold very easily, especially in the turn of pipeline, will result in interior bushing pipe not to obtain fine protection like this, produce wearing and tearing easily, and need a large amount of manpowers when laying the basement membrane protection film, the amount of labour is big, the operation is complicated, basement membrane after laying can be stayed in the pipeline and can not recycle repeatedly, construction cost is great.

Disclosure of Invention

The utility model aims to provide an ultraviolet curing trenchless pipeline repairing device, which solves the problems that a lining pipe cannot be well protected and abraded due to the fact that a bottom film protective film is easy to deviate and wrinkle when laid in the prior art, a large amount of manpower is needed for laying the bottom film protective film, the labor intensity is large, the operation is complex, and the laid bottom film can be left in a pipeline and cannot be recycled repeatedly, so that the construction cost is high.

In order to achieve the purpose, the utility model adopts the technical scheme that:

the utility model provides a draw gear is restoreed to non-excavation pipeline inside lining, is in including traction frame, mount and setting the mount with a plurality of support frames between the traction frame, support frame, mount are connected through extendible shrink's connecting rope mechanism between two liang in proper order, and interior bushing pipe one end passes in proper order mount and support frame with the traction frame is connected, the mount with the support frame internal surface encircles and is equipped with the ball, the traction frame with the support frame can slide in former pipeline, mount accessible fixed establishment fixes in former pipeline.

Preferably, the mount is including being annular fixing base and connecting fixed establishment on the fixing base, a plurality of ball grooves are evenly encircleed to the fixing base internal surface, it has the ball to slide to inlay in the ball groove, fixed establishment includes: the connecting rope mechanism is arranged on the fixing seat, two fixing rods which are respectively connected to two sides of the fixing seat and are hollow inside and are provided with top openings are hinged to the bottom supporting plate at the bottom of each fixing rod, a sliding rod which is arranged in each fixing rod in a sliding mode is hinged to the top supporting plate at the top of each sliding rod, and the two control assemblies can control the sliding rods to move up and down in the fixing rods.

Preferably, the control assembly comprises: the bottom with the bottom wall rotates in the dead lever to be connected, the top runs through the slide bar bottom and with slide bar threaded connection's threaded rod, fixed cover is established the driven gear of threaded rod bottom, with driven gear vertical toothing's driving gear connects two the connecting rod of driving gear with set up the turning handle of connecting rod one end, first through-hole has been seted up on the lateral wall of dead lever bottom, the driving gear pass first through-hole with driven gear vertical toothing, be equipped with the connecting plate on the dead lever lateral wall, the connecting rod runs through the connecting plate and with the connecting plate rotates to be connected.

Preferably, the outer surfaces of the top supporting plate and the bottom supporting plate are both provided with rubber sleeves.

Preferably, the support frame comprises: be the annular supporting seat of circle, evenly encircle the setting and be in the walking pole on supporting seat outside surface with set up the walking wheel of the walking pole other end, a plurality of ball grooves are evenly encircleed to supporting seat internal surface, it has the ball to inlay in the ball groove, connecting rope mechanism sets up on the supporting seat.

Preferably, the traction frame comprises: be the annular traction seat of circle, evenly encircle the setting and be in the walking pole on supporting seat outside surface sets up the walking wheel of walking pole one end evenly encircles the setting and is in a plurality of go-between on the side of traction seat front end set up haulage rope on the go-between sets up the pull ring of the haulage rope other end and setting are in the fixed rope of traction seat internal surface, connection rope mechanism sets up on the traction seat.

Preferably, the connecting rope mechanism is: the hollow mounting box in the mounting box, the connection rope assembly capable of extending and contracting in the mounting box, the connection rope body and the supporting seat are arranged on the connection rope assembly, a second through hole is formed in the front end face of the mounting box, one end of the connection rope body penetrates through the second through hole and is connected with the supporting seat, and the mounting box and the supporting seat are respectively arranged between the adjacent traction frame and the supporting frame, between the two adjacent supporting frames and between the adjacent fixing frame and the supporting frame.

Preferably, the connecting string assembly includes: fixed connection is in fixed axle in the mounting box, rotate to set up fixed epaxial connecting rope reel and setting are in the fixed axle with wind spring between the connecting rope reel, be equipped with the second through-hole on the connecting rope reel, connecting rope body one end is passed the second through-hole is connected with the connecting rope fixation clamp that sets up on connecting rope reel inner wall, the connecting rope body other end passes the second through-hole of mounting box front end is connected with the connecting seat.

Compared with the prior art, the utility model has the advantages that:

1. the traction frame is connected with the connecting rope mechanism which can extend and contract, one end of a lining pipeline is fixed on the traction frame, the fixing frame is fixed in the pipeline, the lining pipe is positioned among the traction frame, the fixing frame and the supporting frame, the traction frame moves along the pipeline under the driving of external power and further drives the lining pipe to move, the traction frame drives the supporting frame to move by driving the connecting rope mechanism in the motion process along the pipeline, so that a plurality of supporting frames also move along the pipeline, the lining pipe is supported in the whole pipeline, the abrasion caused by the contact of the lining pipeline and the original pipeline is effectively avoided, after the traction work is finished, the connection between the traction frame and the external power is released, and the traction frame and the supporting frame are automatically folded under the action of the connecting rope mechanism;

2. the utility model has simple structure, convenient operation and repeated use, does not need to lay a bottom film protective film, reduces the manpower use, effectively improves the construction efficiency and reduces the construction cost.

Drawings

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

FIG. 1 is a schematic view of an extended configuration of a trenchless pipeline lining rehabilitation draft gear;

FIG. 2 is a schematic view of a retracted traction apparatus for trenchless pipeline liner rehabilitation;

FIG. 3 is a schematic view of a fixing frame structure of a traction device for repairing a lining of a trenchless pipeline;

FIG. 4 is a schematic view of a split structure of a fixing frame of a traction device for repairing the lining of the trenchless pipeline;

FIG. 5 is a schematic view of a support frame structure of a traction device for repairing the lining of the trenchless pipeline;

FIG. 6 is a schematic structural view of a traction frame of the trenchless pipeline lining repairing traction apparatus;

FIG. 7 is a cross-sectional view of a connecting rope assembly of a trenchless pipeline lining rehabilitation draft gear;

reference numerals: 1-traction frame, 2-fixed frame, 3-support frame, 4-connecting rope mechanism, 5-rolling ball, 6-fixed seat, 7-fixed mechanism, 8-rolling ball groove, 9-fixed rod, 10-bottom support plate, 11-sliding rod, 12-top support plate, 13-control component, 14-threaded rod, 15-driven gear, 16-driving gear, 17-connecting rod, 18-rotating handle, 19-first through hole, 20-connecting plate, 21-rubber sleeve, 22-supporting seat, 23-walking rod, 24-walking wheel, 25-traction seat, 26-connecting ring, 27-traction rope, 28-traction ring, 29-fixed rope, 30-mounting box, 31-connecting rope component, etc, 32-connecting rope body, 33-connecting seat, 34-second through hole, 35-fixing shaft, 36-connecting rope reel, 37-coil spring, 38-third through hole and 39-connecting rope fixing clamp.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the products of the present invention are used, it is only for convenience of describing the present invention and simplifying the description, but it is not intended to indicate or imply that the device or element which is referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," "third," and the like, if any, are only used to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

As shown in fig. 1, a non-excavation prosthetic devices of pipeline ultraviolet curing, a non-excavation pipeline inside lining is restoreed draw gear, be in including traction frame 1, mount 2 and setting mount 2 with a plurality of support frames 3 between the traction frame 1, support frame 3, mount 2 are connected through extensible shrink's connecting rope mechanism 4 between two liang in proper order, and interior bushing pipe one end is passed in proper order mount 2 and support frame 3 with traction frame 1 is connected, mount 2 with 3 internal surface encircles of support frame are equipped with ball 5, traction frame 1 with support frame 3 can slide in former pipeline, mount 2 accessible fixed establishment 7 is fixed in former pipeline.

In the actual use process, one end of a lining pipeline is fixed on a traction frame 1, a fixing frame 2 is fixed in the pipeline, a lining pipe is positioned among the traction frame 1, the fixing frame 2 and support frames 3, the traction frame 1 moves along the pipeline under the drive of external power so as to drive the lining pipe to move, the traction frame 1 drives the support frames 3 to move by driving a connecting rope mechanism 4 in the motion process of the pipeline, so that a plurality of support frames 3 also move along the pipeline, the lining pipe is supported in the whole pipeline, the condition that the lining pipeline is in contact with the original pipeline to generate abrasion is effectively avoided, after the traction work is finished, the connection between the traction frame 1 and the external power is released, and the traction frame 1 and the support frames 3 are automatically folded under the action of the connecting rope mechanism 4; the balls 5 are arranged on the inner surfaces of the fixing frame 2 and the supporting frame 3 in a surrounding mode, so that the lining pipe can be further protected, and the lining pipe is prevented from being scratched.

As shown in fig. 2, the fixing frame 2 includes a fixing base 6 in a circular ring shape and a fixing mechanism 7 connected to the fixing base 6, the inner surface of the fixing base 6 uniformly surrounds a plurality of grooves for the balls 5, the balls 5 are embedded in the grooves for the balls 5, and the fixing mechanism 7 includes: two fixing rods 9 which are respectively connected with two sides of the fixing seat 6 and are hollow inside and open at the top are hinged to a bottom supporting plate 10 at the bottom of the fixing rod 9, a sliding rod 11 which is arranged in the fixing rod 9 in a sliding mode, a top supporting plate 12 which is hinged to the top of the sliding rod 11, and a control assembly 13 which can control the two sliding rods 11 to move up and down in the fixing rod 9, wherein the connecting rope mechanism 4 is arranged on the fixing seat 6.

Wherein the control assembly 13 comprises: the bottom with wall rotation is connected, the top runs through in dead lever 9 dead lever 11 bottom and with 11 threaded connection's of dead lever threaded rod 14, fixed cover is established driven gear 15 of threaded rod 14 bottom, with driven gear 15 vertical meshing's driving gear 16 connects two connecting rod 16 of driving gear 16, and the setting is in the turning handle 18 of connecting rod 16 one end, first through-hole 19 has been seted up on the dead lever 9 bottom lateral wall, driving gear 16 pass first through-hole 19 with driven gear 15 vertical meshing, be equipped with connecting plate 20 on the dead lever 9 lateral wall, connecting rod 16 runs through connecting plate 20 and with connecting plate 20 rotates and is connected.

Wherein, the working principle that the fixing frame 2 is fixed in the pipeline is as follows: when the whole traction device is placed in a pipeline, the bottom support plate 10 on the fixed frame 2 is contacted with the pipeline, the rotating handle 18 at the bottom is rotated, thereby driving the connecting rod 17 connected with the rotating handle 18 to rotate, further driving the driving gear 16 fixedly sleeved on the connecting rod 17 to rotate, the driving gear 16 transfers the driven gear 15 vertically meshed with the driving gear 16 to rotate, thereby driving the threaded rod 14 fixedly connected with the driven gear 15 to rotate, further causing the sliding rod 11 in threaded connection with the threaded rod 14 to slide upwards along the inner wall of the fixed rod 9, thereby bringing the top support plate 12 on top of the slide bar 11 into abutment with the pipe, thereby completing the fixing work of the fixing frame 2 in the pipeline, when the whole device is required to be dismounted from the pipeline, the handle 18 is rotated only by rotating in the reverse direction, so that the structure is simple, and the operation is convenient and flexible;

in order to enhance the fixing effect of the fixing frame in the pipeline and increase the friction between the top support plate and the bottom support plate and the pipeline, the outer surfaces of the top support plate 12 and the bottom support plate 10 are both provided with rubber sleeves 21.

As shown in fig. 3, the support frame 3 includes: be annular supporting seat 22, evenly encircle the setting and be in the walking pole 23 of supporting seat 22 outside surface, with set up the walking wheel 24 of the walking pole 23 other end, a plurality of balls 5 grooves are evenly encircleed to supporting seat 22 internal surface, 5 inslots of sliding inlays of ball 5 have ball 5, connecting rope mechanism 4 sets up on the supporting seat 22.

It should be noted that: when the annular support seat is used, the lining pipe is located inside the annular support seat 22, the balls 5 inside the support seat 22 can reduce the friction force between the lining pipe and the inner wall of the support seat 22, and therefore the situation that the lining pipe is damaged due to scraping and rubbing of the lining pipe and the support seat 22 in the lining pipe laying process is avoided.

As shown in fig. 4, the traction frame 1 includes: be annular traction seat 25, evenly encircle the setting and be in walking pole 23 on traction seat 25 outside surface sets up walking wheel 24 of walking pole 23 one end evenly encircles the setting and is in a plurality of go-between 26 on the side of traction seat 25 front end, set up haulage rope 27 on the go-between 26 sets up the traction ring 28 of haulage rope 27 other end, and set up the fixed rope 29 of traction seat 25 internal surface, it sets up to connect rope mechanism 4 on the traction seat 25.

It should be noted that the purpose of uniformly surrounding the plurality of connection rings 26 on the front end side surface of the traction seat 25 is to make the traction force acting on the traction seat 25 more uniform, the number of the connection rings 26 can be set according to the requirement of the actual use process, and the fixing rope 29 is arranged to fix the lining pipe in the traction seat 25.

As shown in fig. 1, the connecting rope mechanism 4 is: the utility model discloses a rope assembly, including the supporting seat 22, the rope assembly 31 is connected in the connection that inside hollow mounting box 30, the setting is in extensible shrink in the mounting box 30, the connection rope body 32 and the setting on the rope assembly 31 are connected, the terminal surface sets up second through-hole 34 before the mounting box 30, connect rope body 32 one end pass second through-hole 34 with the supporting seat 22 is connected, the mounting box 30 with the supporting seat 22 sets up respectively between adjacent traction frame 1 and support frame 3, between two adjacent support frames 3, and between adjacent mount 2 and support frame 3.

As shown in fig. 5, the connecting string assembly 31 includes: the fixed axle 35 of fixed connection in the mounting box 30, rotate and set up and be in connect rope reel 36 on the fixed axle 35 and set up the fixed axle 35 with connect the wind spring 37 between the rope reel 36, be equipped with second through-hole 34 on connecting the rope reel 36, connect rope body 32 one end and pass second through-hole 34 is connected with the connecting rope fixation clamp 39 that sets up on connecting the rope reel 36 inner wall, connect the rope body 32 other end and pass the second through-hole 34 and the connecting seat 33 of mounting box 30 front end are connected.

Wherein, the operating principle of the connecting rope mechanism 4 is as follows: when external power drives the traction frame 1 to move along a pipeline, the movement of the traction frame 1 drives the inner lining pipe to move, and then the connecting rope body 32 is pulled out from the connecting rope reel 36, so that the distance among the fixed frame 2, the traction frame 1 and the support frame 3 is increased, the support frame 3 moves along the pipeline, and the inner lining pipe is supported in the whole pipeline; after traction work is accomplished, remove the connection of traction frame 1 and external power, because connect rope body 32 and driven the rotation at the connection rope reel 36 of fixed axle 35 and rotate at the in-process of pulling out, make at fixed axle 35 and connect the wind spring 37 between rope reel 36 and hold power, after traction force disappears, wind spring 37 kick-backs, and then drive and be connected with wind spring 37 and connect rope reel 36 counter-rotation, and then in the future connect the rope to retrieve to the reel, mount 2, traction frame 1, and the interval between the support frame 3 reduces, the automation of accomplishing the device is drawn in, and is rational in infrastructure, and easy operation, can effectively reduce the human labor.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that, while the utility model has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims (8)

1. The utility model provides a draw gear is restoreed to non-excavation pipeline inside lining which characterized in that: including traction frame (1), mount (2) and setting be in mount (2) with a plurality of support frames (3) between traction frame (1), support frame (3), mount (2) are connected through extensible shrink's connection rope mechanism (4) between two liang in proper order, and interior bushing pipe one end passes in proper order mount (2) and support frame (3) with traction frame (1) is connected, mount (2) with support frame (3) inner surface is encircleed and is equipped with ball (5), traction frame (1) with support frame (3) can slide in former pipeline, mount (2) can be fixed in former pipeline.

2. The trenchless pipeline lining rehabilitation traction device of claim 1, wherein: mount (2) including being annular fixing base (6) and connecting fixed establishment (7) on fixing base (6), a plurality of ball grooves (8) are evenly encircleed to fixing base (6) internal surface, it has ball (5) to slide to inlay in ball groove (8), fixed establishment (7) include: connect respectively fixing base (6) both sides and inside cavity, two dead levers (9) of open-top, articulate bottom sprag board (10) of dead lever (9) bottom, the slip sets up slide bar (11) in dead lever (9), articulate top sprag board (12) at slide bar (11) top, and steerable two control assembly (13) that slide bar (11) reciprocated in dead lever (9), it sets up to connect rope mechanism (4) on fixing base (6).

3. The trenchless pipeline lining rehabilitation traction device of claim 2, wherein: the control assembly (13) comprises: the bottom with bottom wall rotates to be connected, the top runs through in dead lever (9) bottom and with slide bar (11) threaded rod (14) of threaded connection, fixed cover is established driven gear (15) of threaded rod (14) bottom, with driven gear (15) perpendicular meshing's driving gear (16), connect two connecting rod (17) of driving gear (16) and setting are in turning handle (18) of connecting rod (17) one end, first through-hole (19) have been seted up on dead lever (9) bottom lateral wall, driving gear (16) pass first through-hole (19) with driven gear (15) perpendicular meshing, be equipped with connecting plate (20) on dead lever (9) lateral wall, connecting rod (17) run through connecting plate (20) and with connecting plate (20) rotate to be connected.

4. The trenchless pipeline lining rehabilitation traction device of claim 2, wherein: the outer surfaces of the top supporting plate (12) and the bottom supporting plate (10) are respectively provided with a rubber sleeve (21).

5. The trenchless pipeline lining rehabilitation traction device of claim 1, wherein: the support frame (3) comprises: be annular supporting seat (22), evenly encircle the setting and be in walking pole (23) of supporting seat (22) outside surface with set up walking wheel (24) of walking pole (23) other end, supporting seat (22) internal surface evenly encircles a plurality of ball grooves (8), it has ball (5) to slide to inlay in ball groove (8), connecting rope mechanism (4) set up on supporting seat (22).

6. The trenchless pipeline lining rehabilitation traction device of claim 1, wherein: the traction frame (1) comprises: be annular traction seat (25), evenly encircle the setting and be in walking rod (23) on traction seat (25) outside surface sets up walking wheel (24) of walking rod (23) one end evenly encircles the setting and is in a plurality of go-between (26) on traction seat (25) front end side set up haulage rope (27) on go-between (26) set up haulage ring (28) of haulage rope (27) the other end, and set up fixed rope (29) of traction seat (25) internal surface, connection rope mechanism (4) set up on traction seat (25).

7. The trenchless pipeline lining rehabilitation traction device of claim 1, wherein: the connecting rope mechanism (4) is as follows: inside hollow mounting box (30), setting are in extensible shrink's connection rope subassembly (31), setting are in mounting box (30) connect rope body (32) and connecting seat (33) on rope subassembly (31), the terminal surface sets up second through-hole (34) before mounting box (30), connect rope body (32) one end and pass second through-hole (34) with connecting seat (33) are connected, mounting box (30) with connecting seat (33) set up respectively between adjacent traction frame (1) and support frame (3), between two adjacent support frames (3), with between adjacent mount (2) and support frame (3).

8. The trenchless pipeline lining rehabilitation traction device of claim 7, wherein: the connecting rope assembly (31) comprises: fixed connection is in fixed axle (35), rotation in mounting box (30) set up connecting rope reel (36) on fixed axle (35) and setting are in fixed axle (35) with wind spring (37) between connecting rope reel (36), be equipped with third through-hole (38) on connecting rope reel (36), connect rope body (32) one end and pass second through-hole (34) are connected with the connecting rope fixation clamp (39) that set up on connecting rope reel (36) inner wall, connect rope body (32) other end and pass third through-hole (38) and connecting seat (33) of mounting box (30) front end are connected.

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