CN209874580U - Water show device - Google Patents

Abstract

The utility model discloses a water show device, including the mount, locate crane on the mount, with the actuating mechanism of crane connection, and at least one artificial flower, the actuating mechanism can drive the crane to go up and down relative to the mount; the artificial flowers respectively comprise petal linkage mechanisms and a plurality of petals connected with the petal linkage mechanisms; the petal linkage mechanism is connected with the lifting frame and can move along with the movement of the lifting frame, and the petal linkage mechanism can drive the plurality of petals to relatively open or close along with the movement of the lifting frame. The utility model discloses can realize the control to a plurality of emulation flowers on this water show device through the actuating mechanism who is used for controlling crane elevating movement to this realizes the control of a pair of many, has played reduction in production cost, and reduces the effect of fault rate.

Description

Water show device

Technical Field

The utility model belongs to the technical field of the beautiful performance of water is relevant, especially, relate to a beautiful device of water.

Background

With the increasing progress of science and technology, the water show artistic performance is also colorful, and the water artificial flower performance is one of the popular water show performances at present.

Wherein, a water show device for aquatic artificial flower performance is provided with a plurality of artificial flowers usually for the water show device is in the performance, and a plurality of artificial flowers can outwards stretch out and present the phenomenon that the flower was opened from aquatic simultaneously. At present, the artificial flowers on the existing water show device for performing the artificial flowers in water are generally in a one-to-one control mode, and particularly, the opening and closing of the flowers on one artificial flower are realized by utilizing one motor drive.

It can be understood that foretell water show device has satisfied the user demand that a plurality of emulation flowers during operation flowers opened and shut on this water show device, nevertheless owing to need set up the opening and shutting of flowers on a plurality of emulation flowers on a plurality of motors come the control water show device respectively for the production manufacturing cost that above-mentioned water show device corresponds is high, and the fault rate of this water show device during operation is high moreover, has not satisfied the user demand of people to water show device.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a water show device to solve the technical problems in the prior art.

The water show device comprises a fixed frame, a lifting frame arranged on the fixed frame, a driving mechanism connected with the lifting frame and at least one simulation flower, wherein the driving mechanism can drive the lifting frame to lift relative to the fixed frame; the artificial flowers respectively comprise petal linkage mechanisms and a plurality of petals connected with the petal linkage mechanisms; the petal linkage mechanism is connected with the lifting frame and can move along with the movement of the lifting frame, and the petal linkage mechanism can drive the plurality of petals to relatively open or close along with the movement of the lifting frame.

As a preferred scheme of the utility model, the petal linkage mechanism comprises a connecting pipe fixedly connected with the lifting frame, a fixed support arranged on the connecting pipe, an inner connecting pipe arranged through the connecting pipe, and a movable support connected with the inner connecting pipe; the petals are arranged on the periphery of the fixed support, a long connecting rod is fixed on each petal, and one end of each long connecting rod, which extends out of each petal, is hinged with the fixed support; the periphery of the movable support is hinged with a plurality of short connecting rods, the short connecting rods and the long connecting rods are in one-to-one correspondence and are connected, and the movement of the movable support can drive the short connecting rods to drive the corresponding long connecting rods to turn over relative to the fixed support.

As a preferred scheme of the utility model, an elastic part is arranged between a first connecting part on the movable support for connecting with the short connecting rod and a second connecting part on the fixed support for connecting with the long connecting rod; the movable support can drive the first connecting piece to extrude the elastic piece to move.

As a preferable scheme of the utility model, a bracket is arranged on the fixed frame and is arranged below the lifting frame; the bracket is provided with a plurality of heavy blocks, the heavy blocks are arranged in a one-to-one correspondence manner with the simulation flowers, an inner connecting pipe on the simulation flowers penetrates through the heavy blocks and the bracket, and the heavy blocks can press the inner connecting pipe to drive a first connecting piece on the movable support to extrude the elastic piece to move.

As a preferred embodiment of the present invention, a limiting member is fixed to the inner joint tube, and the limiting member is engaged with the inner joint tube and can pass through the bracket and engage with the weight block.

As the utility model discloses a preferred scheme, the quantity of the last first connecting piece of movable support with the quantity of the last second connecting piece of fixing support sets up to two respectively.

As the utility model discloses a preferred scheme, actuating mechanism includes gear motor, gear motor has two output shafts to be connected with a wire rope reel through the motor shaft separately, wherein wire rope on every wire rope reel with the crane is connected fixedly.

As the utility model discloses an optimized scheme, the quantity of wire rope sets up to many on the wire rope reel, just wire rope on the wire rope reel can be right the crane carries out lifting drive.

As the utility model discloses an optimal scheme, wire rope with connect fixedly through adjusting the turnbuckle between the crane, it can be right to adjust the turnbuckle wire rope's elasticity is adjusted.

As the utility model discloses an optimal scheme, adjust the turnbuckle and include that the spiral detains the seat, two U type screw rods and revolve the cover, the spiral detains the seat and fixes on the crane, two U type screw rods respectively with revolve the cover and connect with the screw thread mode, one of them U type screw rod is kept away from revolve the cover one end with the spiral detains the seat and connect fixedly, another U type screw rod is kept away from revolve the cover one end with wire rope connects fixedly.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model provides a water show device sets up through reasonable structure for this water show device utilizes the elevating movement of crane to realize locating at the during operation a plurality of artificial flowers's control on the crane, makes the actuating mechanism who is used for controlling crane elevating movement on this water show device can realize the control to a plurality of artificial flowers on this water show device, realizes a plurality of controls with this, has played reduction in production cost, and reduces the effect of fault rate.

Drawings

Fig. 1 is a schematic structural diagram of a water show device according to an embodiment of the present invention.

Fig. 2 is a schematic view of another perspective of the water show device of fig. 1.

Fig. 3 is an assembly view of the fixing frame, the lifting frame, the bracket and the driving mechanism in the water show device of fig. 1.

Fig. 4 is a schematic view of the assembly of the driving mechanism and the fixing frame in the water show device in fig. 1.

Fig. 5 is a schematic structural view of an adjusting turnbuckle in the water show device in fig. 1.

Fig. 6 is a schematic view showing the structure of a simulated flower in the water show device of fig. 1, wherein a connecting pipe of the simulated flower is hidden.

Figure 7 is a schematic view of another perspective of a simulated flower in the water show device of figure 1,

10, a fixing frame; 20. a lifting frame; 30. a drive mechanism; 31. a reduction motor; 32. a wire rope drum; 34. adjusting the screw buckle; 40. simulating flowers; 41. flower petals; 42. a fixed support; 43. a fixed support; 44. an inner connecting pipe; 45. a movable support; 46. a long connecting rod; 47. a short connecting rod; 48. an elastic member; 49. a limiting member; 50. a bracket; 51. a weight block; 301. a wire rope; 311. a motor shaft; 331. a first fixed pulley; 332. a second fixed pulley; 333. a first movable pulley; 334. a third fixed pulley; 335. a second movable pulley; 341. a spiral buckle base; 342. a U-shaped screw; 343. screwing a sleeve; 401. flowers; 421. mounting a plate; 431. a second connecting member; 451. a first connecting member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1 and 2, a water show device according to an embodiment of the present invention includes a fixing frame 10, a lifting frame 20 disposed on the fixing frame 10, and a driving mechanism 30 connected to the lifting frame 20, wherein the driving mechanism 30 can drive the lifting frame 20 to ascend or descend on the fixing frame 10.

In the present embodiment, the driving mechanism 30 includes a gear motor 31, the gear motor 31 has two output shafts, and each gear motor 31 is connected to one wire rope reel 32 through a motor shaft 311, wherein the wire rope 301 on each wire rope reel 32 is fixedly connected to the crane 20. When the driving mechanism 30 works, the two wire rope winding drums 32 are driven to rotate by the speed reducing motor 31, and the lifting frame 20 is lifted or pulled down by the wire rope 301, so that the lifting frame 20 is driven to lift by the driving mechanism 30.

The two wire rope reels 32 are respectively arranged on two symmetrical sides of the fixing frame 10, and a connecting line between the two wire rope reels 32 is arranged on a middle vertical surface of the lifting frame 20, so that the wire rope 301 on the wire rope reels 32 drives the lifting frame 20 to ascend or descend on the fixing frame 10.

Referring to fig. 3 and 4, a first fixed pulley 331 is respectively installed on two sides of the two wire rope drums 32 of the fixed frame 10, four second fixed pulleys 332 are installed on a portion of the fixed frame 10 above the lifting frame 20, four first movable pulleys 333 are installed on the lifting frame 20, and the first fixed pulleys 331, the second fixed pulleys 332 and the first movable pulleys 333 are arranged in a one-to-one correspondence manner and form a pulley block; and the steel wire rope 301 on the steel wire rope winding drum 32 sequentially bypasses the first fixed pulley 331, the second fixed pulley 332 and the first movable pulley 333, and is then fixedly connected with the lifting frame 20. Thus, when the wire rope reel 32 rotates and winds the wire rope 301, the wire rope 301 drives the first fixed pulley 331, the second fixed pulley 332 and the first movable pulley 333 to rotate, and the lifting frame 20 is lifted by using one end of the wire rope 301 which is fixedly connected with the lifting frame 20. It is understood that the pulley block for realizing the lifting action of the steel wire rope 301 on the lifting frame 20 is not limited to the illustration, and those skilled in the art can arrange the pulley block into the first fixed pulley 331 and the second fixed pulley 332 fixed on the fixed frame 10, and directly fix the steel wire rope 301 bypassing the second fixed pulley 332 on the lifting frame 20 according to the use requirement.

As can be seen from the above, one wire rope 301 on the wire rope reel 32 is disposed corresponding to the first fixed pulley 331, the second fixed pulley 332, and the first movable pulley 333 on one pulley block, and constitutes one driving action point for driving the crane 20 to ascend, so the number of the first fixed pulley 331, the second fixed pulley 332, and the first movable pulley 333 on the driving mechanism 30 of this embodiment is not limited to four, and the number of the first fixed pulley 331, the second fixed pulley 332, and the first movable pulley 333 can be set to two according to the use requirement in the field, and the crane 20 is diagonally disposed with respect to the crane 20, so as to realize the ascending driving of the crane 20 on the fixed frame 10.

As a preferred embodiment of the present invention, the fixing frame 10 of the present embodiment further has a third fixed pulley 334, the lifting frame 20 has a second movable pulley 335 thereon, the third fixed pulley 334 and the second movable pulley 335 are disposed in a one-to-one correspondence, and the steel wire rope 301 on the steel wire rope winding drum 32 bypasses the third fixed pulley 334 and the second movable pulley 335, and then is fixedly connected to the lifting frame 20. When the wire rope drum 32 rotates and winds the wire rope 301, the wire rope 301 drives the third fixed pulley 334 and the second movable pulley 335 to rotate, and the wire rope 301 and one end of the lifting frame 20 which is fixedly connected are used for realizing the pull-down driving of the lifting frame 20, so that the stability of the lifting frame 20 when descending relative to the fixed frame 10 is improved. That is, the driving mechanism 30 of the present embodiment is further provided with a pulley block for driving the crane 20 to be pulled down, wherein the number of the third fixed pulley 334 and the second movable pulley 335 may be specifically set by referring to the first fixed pulley 331, the second fixed pulley 332 and the first movable pulley 333, which will not be described herein. In this embodiment, it is preferable that two third fixed pulleys 334 and two second movable pulleys 335 are provided diagonally with respect to the crane 20. It can be understood that, the fixed frame 10 and the lifting frame 20 of the water show device of the present embodiment are only provided with the pulley block for driving the lifting frame 20 to ascend, so that the lifting frame 20 can descend on the fixed frame 10 by using its own gravity.

In this embodiment, the wire rope 301 and the crane 20 are connected and fixed by an adjusting screw 34, wherein the adjusting screw 34 can adjust the tightness of the wire rope 301, that is, the adjusting screw 34 can adjust the assembling position of the wire rope 301 on the crane 20.

Referring to fig. 5, the adjusting screw 34 includes a screw seat 341, two U-shaped screws 342 and a screw sleeve 343, wherein the screw seat 341 is fixed on the lifting frame 20, the two U-shaped screws 342 are respectively connected with the screw sleeve 343 in a threaded manner, one end of one U-shaped screw 342 far from the screw sleeve 343 is fixedly connected with the screw seat 341, and one end of the other U-shaped screw 342 far from the screw sleeve 343 is fixedly connected with the steel wire rope 301. When the adjusting turnbuckle 34 is adjusted, the U-shaped screw 342 can be screwed according to the use requirement, and the assembly position between the steel wire rope 301 and the lifting frame 20 can be adjusted by changing the assembly position between the U-shaped screw 342 and the screwing sleeve 343, so that the tightness of the steel wire rope 301 can be adjusted.

In this embodiment, the crane 20 is provided with at least one artificial flower 40, wherein the artificial flower 40 includes a petal linkage mechanism and a plurality of petals 41 connected with the petal linkage mechanism, a plurality of petals 41 enclose to form a flower 401, the petal linkage mechanism can move along with the crane 20, the petal linkage mechanism can drive a plurality of petals 41 to open or close relatively while moving along with the crane 20, so as to present the situation that the flower 401 opens or closes. That is to say, the opening and closing of the flowers 401 on the simulated flowers 40 in the water show device of the embodiment can be specifically controlled by the driving mechanism 30 for driving the lifting frame 20 to go up and down, so that when the water show device works, the opening and closing of the flowers 401 on the plurality of simulated flowers 40 on the lifting frame 20 can be controlled by controlling the speed reducing motor 31 on the driving mechanism 30, and therefore, the one-to-many control is realized, the production cost is reduced, and the failure rate of the work of the water show device is reduced by controlling the speed reducing motor 31.

Referring to fig. 6 and 7, the petal linkage mechanism includes a connecting pipe 42 fixedly connected to the crane 20, a fixed support 43 disposed on the connecting pipe 42, an inner connecting pipe 44 disposed through the connecting pipe 42, and a movable support 45 connected to the inner connecting pipe 44. Wherein, the connecting pipe 42 is fixed on the lifting frame 20 through a mounting plate 421, thereby realizing the fixed assembly of the artificial flower 40 on the lifting frame 20. So that the whole of the artificial flower 40 can be raised or lowered relative to the fixed frame 10 following the lifting frame 20.

In the present embodiment, the petals 41 of the artificial flower 40 are arranged on the periphery of the fixed support 42, wherein each petal 41 is fixed with a long connecting rod 46, and one end of each long connecting rod 46 extending out of the petal 41 is hinged with the fixed support 43. The periphery of the movable support 45 is hinged with a plurality of short connecting rods 47, the short connecting rods 47 correspond to the long connecting rods 46 one by one and are connected, and the movable support 45 moves to drive the short connecting rods 47 to drive the long connecting rods 46 to turn over relative to the fixed support 43, so that the petals 41 are arranged on the fixed support 43 and can turn over relative to the fixed support 43, and the flowers 401 are opened and closed.

The movable support 45 is provided with a first connecting piece 451, and the short connecting rods 47 are respectively arranged on the periphery of the first connecting piece 451 and hinged with the first connecting piece 451; and the fixed support 43 is provided with a second connecting piece 431, and the long connecting rods 46 are arranged on the periphery of the second connecting piece 431 and are respectively hinged with the second connecting piece 431, so that the petals 41 are connected with the fixed support 43 and the movable support 45.

In this embodiment, an elastic member 48 is disposed between the first connecting member 451 on the movable support 45 and the second connecting member 431 on the fixed support 43, so that a certain distance is formed between the first connecting member 451 and the second connecting member 431, and further, the first connecting member 451 on the movable support 45 pulls and holds the corresponding long connecting rod 46 through the short connecting rod 47, that is, when the artificial flower of this embodiment is in the initial state, the petals 41 on the artificial flower are in the closed state. The elastic element 48 is preferably configured as a spring, and the movable support 45 can drive the first connecting element 451 to press the elastic element 48 to move, so as to realize the movement of the movable support 45 relative to the fixed support 43.

In the present embodiment, a bracket 50 is disposed on the fixing frame 10, the bracket 50 is disposed below the lifting frame 20, and preferably, the bracket 50 is sleeved on the fixing frame 10 and is specifically disposed on a cross beam of the fixing frame 10. The weight blocks 51 are placed on the bracket 50, the weight blocks 51 are arranged in one-to-one correspondence with the simulated flower, wherein the inner pipe 44 on the simulated flower is arranged to penetrate through the corresponding weight blocks 51 and the bracket 50, and the weight blocks 51 can press the inner pipe 44 downwards to drive the first connecting piece 451 on the movable support 45 to press the elastic piece 48 to move.

A limiting member 49 is fixed to one end of the inner tube 44 extending out of the connecting tube 42, the limiting member 49 can cooperate with the weight 51 to press the weight 51 down on the inner tube 44, and since the inner tube 44 is connected and fixed to the movable support 45, the pressing down of the weight 51 on the inner tube 44 can drive the first connecting member 451 on the movable support 45 to press the elastic member 48, so that the movable support 45 moves relative to the fixed support 43, and the moving of the movable support 45 relative to the fixed support 43 can drive the short connecting rod 47 to push the long connecting rod 46, so as to drive the petals 41 to turn relative to the fixed support 43, so that the petals 41 are relatively opened, and the situation that the flowers 401 are opened is presented.

As can be seen from the above, when the limiting member 49 of the inner joint tube 44 ascends along with the connecting tube 42 and passes through the bracket 50, the limiting member 49 can drive the weight member 51 disposed on the bracket 50 to ascend together, and at the same time, the weight member 51 presses down the limiting member 49 under the action of gravity, so that the limiting member 49 drives the first connecting member 451 of the movable support 45 to press the elastic member 48. It can be understood that the implementation manner for cooperating with the limiting member 49 to drive the first connecting member 451 on the movable support 45 to press the elastic member 48 is not limited to the structure shown in the drawings, and a person skilled in the art can set a bracket on the fixed frame 10 according to the use requirement, and the bracket is realized by the abutting between the bracket and the limiting member 49, that is, when the artificial flower 40 ascends to the moving height along with the lifting frame 20, the bracket can be driven to ascend together by the limiting member 49 on the artificial flower 40.

In the present exemplary embodiment, the stop element 49 is configured as a union nut which is screwed onto the inner pipe 44, so that the stop element 49 and the inner pipe 44 are connected to each other in an assembled manner. Wherein the inner nipple 44 is capable of driving the lock nut through the bracket 50, and the lock nut through the bracket 50 is capable of abutting against the weight 51 and driving the weight 51 to ascend together with the crane 20.

Further, the number of the first connecting pieces 451 on the movable support 45 and the number of the second connecting pieces 431 on the fixed support 43 are respectively set to two, the elastic piece 48 is arranged between the two adjacent first connecting pieces 451 and the second connecting pieces 431, and the first connecting pieces 451 and the second connecting pieces 431 are arranged in a one-to-one correspondence manner and are respectively connected with a plurality of petals 41 through long connecting rods 46 and short connecting rods 47, so that the petals 41 on the simulated flower 40 are arranged in a staggered manner, and the simulation degree of the flower 401 formed by encircling the petals 41 is improved. It should be noted that the number of the first connecting pieces 451 on the movable support 45 and the number of the second connecting pieces 431 on the fixed support 43 of the petal folding and unfolding apparatus 40 of the present embodiment are not limited to those shown in the drawings, and those skilled in the art can set the number of the first connecting pieces 451 and the number of the second connecting pieces 431 to three, four, or even more respectively according to the use requirement, so that the finally formed flower is formed by wrapping multiple petals.

To sum up, the utility model discloses a water show device is at the during operation, actuating mechanism 30's gear motor 31 work drives through wire rope 301 the crane 20 do for during the rising of mount 10, locate artificial flower 40 on this crane 20 and follow the crane 20 rises and rises, when rising to a certain position, petal 41 on the artificial flower 40 do for fixing support 43's upset presents the open effect of flower 401 with this, otherwise, artificial flower 40 along with crane 20's decline, petal 41 on it do for fixing support 43's antiport to present the closed effect of flower 401. The utility model discloses realize the overall control of this elegant device during operation by a gear motor 31 to this realizes the control of a pair of many, has played reduction in production cost, and reduces the effect of fault rate.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A elegance device, its characterized in that: the artificial flower lifting device comprises a fixed frame, a lifting frame arranged on the fixed frame, a driving mechanism connected with the lifting frame and at least one artificial flower, wherein the driving mechanism can drive the lifting frame to lift relative to the fixed frame; the artificial flowers respectively comprise petal linkage mechanisms and a plurality of petals connected with the petal linkage mechanisms; the petal linkage mechanism is connected with the lifting frame and can move along with the movement of the lifting frame, and the petal linkage mechanism can drive the plurality of petals to relatively open or close along with the movement of the lifting frame.

2. A water show apparatus as claimed in claim 1, characterised in that: the petal linkage mechanism comprises a connecting pipe fixedly connected to the lifting frame, a fixed support arranged on the connecting pipe, an inner connecting pipe arranged through the connecting pipe, and a movable support connected with the inner connecting pipe; the petals are arranged on the periphery of the fixed support, a long connecting rod is fixed on each petal, and one end of each long connecting rod, which extends out of each petal, is hinged with the fixed support; the periphery of the movable support is hinged with a plurality of short connecting rods, the short connecting rods and the long connecting rods are in one-to-one correspondence and are connected, and the movement of the movable support can drive the short connecting rods to drive the corresponding long connecting rods to turn over relative to the fixed support.

3. A water show apparatus as claimed in claim 2, wherein: the movable support is provided with a first connecting piece used for being connected with the short connecting rod, and an elastic piece is arranged between the movable support and a second connecting piece used for being connected with the long connecting rod on the fixed support; the movable support can drive the first connecting piece to extrude the elastic piece to move.

4. A water show apparatus as claimed in claim 3, characterized in that: the fixed frame is provided with a bracket which is arranged below the lifting frame; the bracket is provided with a plurality of heavy blocks, the heavy blocks are arranged in a one-to-one correspondence manner with the simulation flowers, an inner connecting pipe on the simulation flowers penetrates through the heavy blocks and the bracket, and the heavy blocks can press the inner connecting pipe to drive a first connecting piece on the movable support to extrude the elastic piece to move.

5. The water show apparatus of claim 4, wherein: and a limiting piece is fixed on the inner connecting tube, and the limiting piece can penetrate through the bracket along with the movement of the inner connecting tube and is in butt fit with the weight.

6. A water show apparatus as claimed in claim 2, wherein: the number of the first connecting pieces on the movable support and the number of the second connecting pieces on the fixed support are respectively set to be two.

7. A water show apparatus as claimed in claim 1, characterised in that: the driving mechanism comprises a gear motor, the gear motor is provided with two output shafts and is respectively connected with a steel wire rope reel through a motor shaft, and a steel wire rope on each steel wire rope reel is fixedly connected with the lifting frame.

8. The water show apparatus of claim 7, wherein: the number of the steel wire ropes on the steel wire rope reel is multiple, and the steel wire ropes on the steel wire rope reel can drive the lifting frame to lift.

9. The water show apparatus of claim 7, wherein: the steel wire rope and the lifting frame are fixedly connected through an adjusting screw buckle, and the adjusting screw buckle can adjust the tightness of the steel wire rope.

10. A water show apparatus as claimed in claim 9, wherein: adjust the turnbuckle including the spiral and detain the seat, two U type screw rods and revolve the cover, the spiral is detained the seat and is fixed on the crane, two U type screw rods respectively with revolve the cover and connect with the screw thread mode, one of them U type screw rod is kept away from revolve the one end of cover with the spiral is detained the seat and is connected fixedly, and another U type screw rod is kept away from revolve the one end of cover with wire rope is connected fixedly.