Cloth pushing frame and air cooling island anti-freezing cloth curtain using same

Abstract

The utility model discloses a cloth pushing frame and an air cooling island anti-freezing cloth curtain using the cloth pushing frame, and relates to an anti-freezing cloth curtain operation device for a direct cooling type air cooling island and the air cooling island anti-freezing cloth curtain. The anti-freezing cloth curtain solves the problems that a lower hem of the anti-freezing cloth curtain is prone to friction with devices below the lower hem, and finally the anti-freezing cloth curtain is abraded and the service life is shortened. The cloth pushing frame comprises a bottom supporting body. The air cooling island anti-freezing cloth curtain comprises an anti-freezing cloth curtain body, a plurality of cross beams, guide rails and wheels, the wheels are arranged at the two ends of each cross beam respectively, the cross beams are parallel to each other and fixedly connected with the anti-freezing cloth curtain body, and the wheels at the ends of the cross beams are arranged in the cross beams to achieve rolling restrained by the guide rails. And the bottom supporting body of the cloth pushing frame is fixed on the outer wall of the outermost cross beam and is inserted into the lower hem of the anti-freezing cloth curtain. Due to the fact that the bottom supporting body is arranged, the lower hem of the anti-freezing cloth curtain can be upwards pressed and folded into a small space so that the lower hem of the anti-freezing cloth curtain can be separated from the plane of the fan opening and lifted upwards, friction between the lower hem and a device on the plane of the fan opening is avoided, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling auxiliary equipment of power station steam turbines, in particular to an antifreeze curtain operating device for a direct-cooling air-cooling island and the antifreeze curtain of the air-cooling island. Background Art

[0002] As a cooling device for large steam turbines in existing power plants, air-cooled islands have many applications and good effects. However, in colder areas, especially in the high-cold areas of Northeast China, the bottom of the tube bundle and the upper end of the fan port in the air-cooled island unit are very easy to freeze due to the low ambient temperature in winter, causing the condenser tube bundle in the air-cooled island to freeze and block the cooling pipeline, causing the cooling system to be paralyzed, causing the power station to shut down and affect power generation, resulting in huge economic losses. Therefore, an antifreeze curtain that can be opened and closed in the horizontal direction is generally installed above the fan port of the air-cooled island. For example, in the Chinese patent of the "air-cooled island antifreeze device" disclosed by publication number CN204115505U, the two ends of the antifreeze curtain are installed on a groove track, and the opening and closing of the antifreeze curtain is realized by the drive system. The middle of the body of the antifreeze curtain is evenly fixed on several beams. After the distance between the beams is shortened, the vents are opened, and at the same time, several relatively uniform hems are formed under the beams. When the antifreeze curtain is unfolded, the cold air is blocked from entering the vents to avoid ice above the fan port. When the antifreeze curtain is gathered and retracted to one or both ends of the fan outlet, the airflow passing through the fan outlet of the air-cooling island will cause the lower hem of the antifreeze curtain to swing rapidly, making it difficult to control its position. The lower hem of the antifreeze curtain is prone to friction with the device below it, eventually causing severe wear of the antifreeze curtain and shortening its service life. Summary of the invention

[0003] The technical problem to be solved by the utility model is that when the existing antifreeze curtains for air-cooled islands are gathered, the airflow passing through the fan outlet of the air-cooled island will cause the hem of the antifreeze curtains to swing rapidly, making it difficult to control their position. The hem of the antifreeze curtains is prone to friction with the device below them, eventually leading to wear of the antifreeze curtains and shortened service life. Provided is a cloth pushing rack and an antifreeze curtain for air-cooled islands using the cloth pushing rack.

[0004] The technical solution of the utility model cloth pushing rack is: a cloth pushing rack, characterized in that: it comprises a supporting bottom body 1.

[0005] When in use, the supporting base 1 is fixedly arranged on the outermost crossbeam. When the antifreeze curtains are gathered, the supporting base 1 is inserted obliquely downward into the hem of the antifreeze curtains 11, pressing the hems of all the antifreeze curtains 11 together in an oblique direction, preventing the hems of the antifreeze curtains from swinging with the wind, and not easily generating friction with the device below, thereby extending the service life of the antifreeze curtains.

[0006] The technical solution of the air-cooled island antifreeze curtain using the cloth pusher in the utility model is:

[0007] It includes an antifreeze curtain 11, multiple crossbeams 12, two guide rails 13 and multiple wheels 14, a wheel 14 is arranged at each end of each crossbeam 12, multiple crossbeams 12 are parallel to each other, multiple crossbeams 12 are evenly distributed and fixedly connected to the antifreeze curtain 11, two guide rails 13 are parallel to each other, and the wheels 14 at the end of each crossbeam 12 are arranged in a guide rail 13 to achieve rolling constrained by the guide rail 13; it is characterized in that: it also includes a cloth pushing frame, a bottom supporting body 1 is fixed on the outer wall of the outermost crossbeam 12, and the bottom supporting body 1 is inserted forward into the hem of the antifreeze curtain 11.

[0008] For the air-cooling island antifreeze curtain device, when the distance between multiple beams 12 is pulled apart, the hem of the antifreeze curtain 11 rises until it disappears, and at the same time, the antifreeze curtain 11 unfolds and closes the vent of the air-cooling island. When the external force pushes the beams 12 forward and causes the distance between the beams 12 to shorten, the antifreeze curtain 11 folds and reveals the hem, and the cloth pusher located outside all the beams 12 pushes into the hem, and folds and lifts all the hems.

[0009] Beneficial effects of the utility model:

[0010] 1. Due to the provision of the supporting base 1, the lower hem of the antifreeze curtain 11 can be folded upward and gathered into a smaller space so that the lower hem of the antifreeze curtain is separated from the plane of the fan port and lifted upward, thereby avoiding friction with the device on the plane of the fan port and extending the service life of the antifreeze curtain.

[0011] 2. The antifreeze curtain is gathered and will not be blown into disorder by the airflow. It can be unfolded freely without anyone to tidy it up.

[0012] 3. It has the advantages of easy operation, simple structure, ingenious and reasonable design. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] As a part of this application, the accompanying drawings are used to provide a further understanding of the present invention.

[0014] Figure 1 It is a structural schematic diagram of the cloth pushing frame of the utility model.

[0015] Figure 2 for Figure 1 Schematic diagram of the top view structure.

[0016] Figure 3 The utility model is a schematic structural diagram of an air-cooled island antifreeze curtain using the cloth pushing frame.

[0017] Figure 4 for Figure 3 A schematic diagram of a top view of the structure is given. An embodiment is given.

[0018] Figure 5 for Figure 3 A top view of the structure. Figure 4 Another embodiment of .

[0019] Figure 6 for Figure 3 A top view of the structure. Figure 4 and Figure 5 Another embodiment of .

[0020] Figure 7 This is a structural diagram of implementation mode 3.

[0021] Figure 8 for Figure 7 Schematic diagram of the left view structure.

[0022] Fig. 9 This is a structural diagram of implementation mode 4.

[0023] Fig.10 A schematic structural diagram of implementation mode 2.

[0024] Fig.11 It is a schematic diagram of the top view structure of implementation mode 5.

[0025] Fig.12 This is a side view of embodiment 5.

[0026] Fig.13 It is a schematic diagram of the connection structure between the bottom supporting body 1 and the first connecting plate 3-1 in the cloth pushing frame in embodiment 5.

[0027] Fig.14 It is a schematic diagram of the structure in which the base body 1 is directly welded to the crossbeam 12 .

[0028] Fig.15 It is a structural diagram of implementation mode 6.

[0029] Fig.16 yes Fig.15 OO profile diagram.

[0030] Fig.17 It is a top view of the air-cooled island antifreeze curtain using a cloth pusher in the seventh embodiment.

[0031] Fig.18 It is a right side view of the air-cooled island antifreeze curtain using a cloth pusher in the seventh embodiment. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the implementation mode will be clearly and completely described below in conjunction with the drawings in the implementation mode. The following implementation mode is used to illustrate the utility model, but is not used to limit the scope of the utility model. In addition, the definition of "front end" used in this application refers to the end of the antifreeze curtain 1 away from the cloth pusher, and the definition of "rear end" refers to the end of the antifreeze curtain 1 fixed to the cloth pusher through the crossbeam.

[0033] Implementation 1: See Figure 1 , 2 , 3, 4 and Figure 5 , Figure 6 , the present embodiment is: a cloth pushing rack, which includes a base body 1. For example: the base body 1 can be a plane body formed by bending a pipe, and the cross section of the base body 1 is circular. Another example: the base body 1 is a trapezoidal plane body that is narrow in the front and wide in the back, and the front end is closed and the rear end is open, and a reinforcing cross bar 1-3 is arranged between the front and rear ends. With such an arrangement, the structure is lighter, and when the front end is inserted into the bottom end of the hem of the antifreeze curtain 1, the front end of the circular tube is arc-shaped, and the friction resistance is small. There is another function, that is, when the antifreeze curtains 11 are stacked together, if the curtains fall off from the front end, the reinforcing cross bar can block the curtains for a second time. The rear end of the base body 1 is fixed to the outer wall of the outermost cross beam 12, and can be directly welded, such as Fig.14 . Such a structure is very simple.

[0034] A better embodiment is: the cloth pushing frame also includes a first connecting plate 3-1 and a second connecting plate 3-2, the lower end of the first connecting plate 3-1 is fixed on one end of the length direction of the support base body 1, and the lower end of the second connecting plate 3-2 is fixed on the other end of the length direction of the support base body 1, and the first connecting plate 3-1 and the second connecting plate 3-2 are located in the same plane and the front plate surfaces of both are fixed to the rear end of the support base body 1. Such a structure is that a component for fixing is added to the rear end of the support base body 1, and the two connecting plates are respectively arranged at the two ends of the length of the support base body 1, so as to ensure that the force is evenly applied during use, and the support base body 1 will not flip left and right. The two connecting plates can be welded to the outer wall of the outermost crossbeam 12, replacing the direct welding of the support base body 1 and the crossbeam, and the angle at which the support base body 1 is inserted into the antifreeze curtain can also be more parallel to the ground.

[0035] A more excellent embodiment is: the cloth pushing frame also includes a crossbeam anti-rotation unit, the bottom support body 1 is fixed on the outermost crossbeam 12, and the crossbeam anti-rotation unit is connected to the crossbeam 12 to prevent the crossbeam from turning over around its own axis. As the crossbeams 12 gather together, the hem of the antifreeze curtains is stacked more and more, and becomes heavier and heavier, which will cause the crossbeams 12 fixed thereto to tend to turn over. Since all the crossbeams 12 are driven by the traction of steel wire ropes parallel to the guide rails 13, the steel wire ropes will prevent the crossbeams 12 from turning over under normal circumstances, but when the crossbeams reach the extreme position where they gather, the force that causes the crossbeams 12 to turn over is very large, and the steel wire ropes can hardly overcome the turning force of the crossbeams 12, so it is necessary to add another crossbeam anti-rotation unit to ensure the smooth operation of the device.

[0036] The best embodiment of this embodiment is that the cross beam anti-rotation unit can use the first reverse force arm 2-1, and the upper end of the first connecting plate 3-1 is fixedly connected to the rear end of the first reverse force arm 2-1. Figure 4 , 5 As shown in Figure 6, the first reverse force arm 2-1 can be extended forward to press the cross beam 12, or the first reverse force arm 2-1 can be extended obliquely forward to the top of the guide rail 13 by using the first connecting plate 3-1 without contacting the guide rail 13; the front end of the first reverse force arm 2-1 can also be bent toward the upper surface of the guide rail 13. The above-mentioned methods are all conventional structural designs.

[0037] The air-cooled island antifreeze curtain using the cloth pushing rack includes an antifreeze curtain 11, multiple beams 12, two guide rails 13 and multiple wheels 14. A wheel 14 is arranged at each end of each beam 12. The multiple beams 12 are parallel to each other. The multiple beams 12 are evenly distributed and fixedly connected to the antifreeze curtain 11. The two guide rails 13 are parallel to each other. The wheels 14 at the end of each beam 12 are arranged in a guide rail 13 to realize rolling constrained by the guide rail 13. It is characterized in that it also includes a cloth pushing rack, a bottom support body 1 is fixed on the outer wall of the outermost beam 12, and the bottom support body 1 is inserted forward into the hem of the antifreeze curtain 11. Figure 7 As shown, the antifreeze curtain 11 forms a foldable structure at the crossbeam 12, so that when the antifreeze curtain 11 is folded, the fan vent position of the air cooling island is opened. When the antifreeze curtain 11 is unfolded and flattened, the fan vent position of the air cooling island is blocked.

[0038] Implementation method 2: Participation Fig.10The difference between this embodiment and embodiment 1 is that the cloth pusher also includes a sliding support block 20, which is fixed to the front end of the first reverse force arm 2-1, and the sliding support block 20 is pressed on the upper surface of a guide rail 13. In this way, the sliding support block 20 slides with the upper surface of the guide rail 13. When the gravity generated by the antifreeze curtain 11 acts on the bottom support body 1, a rotation tendency is generated on the crossbeam 12 fixed to the cloth pusher, and then the sliding support block 20 is pressed against the upper surface of the guide rail 13, thereby obtaining support, achieving force balance, and avoiding the rotation of the crossbeam 12. Moreover, the sliding support block 20 can slide along the upper surface of the guide rail 13 as the crossbeam 12 moves.

[0039] The rest is the same as the first embodiment.

[0040] Implementation 3: See Figure 7 , Figure 8 and Fig. 9 . The difference between this embodiment and embodiment 1 is that the cloth pushing frame also includes a first roller 30, which is fixed to the front end of the first reverse force arm 2-1, and the rim of the first roller 30 is pressed on the upper surface of a guide rail 13. In this way, the first roller 30 and the upper surface of the guide rail 13 are rolled together. When the gravity generated by the antifreeze curtain 11 acts on the supporting base 1, the crossbeam 12 fixed to the cloth pushing frame has a tendency to rotate, and the first roller 30 is pressed against the upper surface of the guide rail 13 to obtain support and achieve force balance. And it can roll along the upper surface of the guide rail 13 as the crossbeam 12 is displaced.

[0041] The rest is the same as the first embodiment.

[0042] Implementation 4: See Fig. 9 The difference between this embodiment and embodiment 1 is that the cloth pushing frame also includes a second reverse clamping arm 2-2, the rod-shaped body of the second reverse force arm 2-2 is located above the plane where the base body 1 is located, the rear end of the second reverse force arm 2-2 is fixed on the front plate surface of the second connecting plate 3-2, and the projection of the second reverse force arm 2-2 to the plane where the base body 1 is located is located on the side of the base body 1 and is arranged on both sides of the base body 1 with the first reverse force arm 2-1.

[0043] The second reverse force arm 2-2 extends forward to the upper surface of the cross beam 12 or extends obliquely forward to the upper surface of the guide rail 13. When extending to the upper surface of the guide rail 13, a second roller 40 can be arranged at its front end. In this way, the cloth pusher provides a left-right symmetrical double support for the antifreeze curtain, and the structure is more stable.

[0044] The rest is the same as the first embodiment.

[0045] Implementation 5: See Fig.11 , Fig.12 and Fig.13 , this embodiment is: the cloth support frame includes a base support body 1, a crossbeam anti-rotation unit, a first connecting plate 3-1 and a second connecting plate 3-2, the lower end of the first connecting plate 3-1 is fixed to one end of the base support body 1 in the length direction, and the lower end of the second connecting plate 3-2 is fixed to the other end of the base support body 1 in the length direction, the first connecting plate 3-1 and the second connecting plate 3-2 are located in the same plane and the front plate surfaces of both are fixed to the rear end of the base support body 1, and the crossbeam anti-rotation unit is connected to the base support body 1 through the first connecting plate 3-1 and the second connecting plate 3-2 to counteract the external force acting on the base support body 1 that causes it to have a tendency to flip.

[0046] The air-cooled island antifreeze curtain using the cloth pusher comprises an antifreeze curtain 11, a plurality of beams 12, two guide rails 13 and a plurality of wheels 14, a wheel 14 is arranged at each end of each beam 12, the plurality of beams 12 are parallel to each other, the plurality of beams 12 are evenly distributed and fixedly connected to the antifreeze curtain 11, the two guide rails 13 are parallel to each other, and the wheels 14 at the ends of each beam 12 are arranged in one guide rail 13 to realize rolling constrained by the guide rail 13; the first connecting plate 3-1 and The second connecting plates 3-2 are fixedly connected to the side walls of the outermost crossbeam 12, and the bottom support body 1 is inserted forward into the hem of the antifreeze curtain 11; the crossbeam anti-rotation unit includes at least one pair of auxiliary rollers 50, which are respectively arranged adjacent to the wheels 14 arranged at both ends of the outermost crossbeam 12, and each auxiliary roller 50 is arranged front and back between the adjacent wheels 14, and the wheel axles between the auxiliary rollers 50 and the wheels 14 are parallel and fixedly connected to the ends of the crossbeam 12. The wheels 14 and the auxiliary rollers 50 are connected in a line with a certain length. When the cloth support frame tends to flip over, the guide rails 13 exert a limiting effect to counteract the flipping of the cloth support frame. This method is different from the reverse lever arm method and provides another technical implementation method for the crossbeam anti-rotation unit.

[0047] Other details are the same as those in Implementation 1.

[0048] Implementation 6: See Fig.15 , Fig.16 The difference between this embodiment and embodiment 5 is that the cross beam anti-rotation unit includes at least one pair of auxiliary levers 80 and a pair of wheel forks 90. The wheel forks 90 are respectively arranged on the wheels 14 at both ends of the outermost cross beam 12. The wheel forks 90 are fixed on the axle 100 of the wheel 14. One end of the auxiliary lever 80 in the length direction is fixed on the top of the wheel fork 90. ​​The front end of each auxiliary lever 80 extends to the upper part of the wheel rim of the adjacent wheel 14 and between the inner surface of the guide rail 13. With such arrangement, when the cross beam 12 flips, the auxiliary lever 80 can prevent the flip from happening.

[0049] Other details are the same as those of Implementation 5.

[0050] Implementation 7: See Fig.17 , Fig.18 The difference between this embodiment and the air-cooled island antifreeze curtain in embodiment 1 is that the base body 1 includes a rope body 1-1 and two tension springs 1-2, and the rope body 1-1 is connected in the middle of the two tension springs 1-2; the cloth pushing frame also includes a left front plug connector 7-1, a right front plug connector 7-2, a wall panel 7-3, a hook plate 7-4, a wheel seat plate 7-5, a front nylon wheel 7-6 and a rear nylon wheel 7-7, and the front ends of the left front plug connector 7-1 and the right front plug connector 7-2 are respectively connected to the two ends of the base body 1. The rear ends of the left front connector 7-1 and the right front connector 7-2 are respectively fixed to the lower end of a wall plate 7-3, and the upper end of each wall plate 7-3 is fixed to one end of a roll hook plate 7-4, and the roll hook plate 7-4 is rolled and fixed to the outer surface of the cross beam 12; the outer end of the cross beam 12 is respectively fixed with a wheel seat plate 7-5, and the outer surface of the wheel seat plate 7-5 is provided with a front nylon wheel 7-6 and a rear nylon wheel 7-7, and the front nylon wheel 7-6 and the rear nylon wheel 7-7 are arranged in the guide rail 13 in a front-to-back order. The left front connector 7-1 and the right front connector 7-2 can be implemented by using a round tube. The roll hook plate 7-4 can be fixed to the cross beam 12 by a bolt 7-10.

[0051] With such arrangement, the structure is relatively light, and the bottom support body 1 has strong rebound, so the position restriction effect on the antifreeze curtain 11 is more obvious.

[0052] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that different dependent claims and features described herein may be combined in a manner different from that described in the original claims. It may also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. A cloth pushing frame, comprising a supporting body (1); characterized in that: It also comprises a crossbeam anti-rotation unit. The supporting base (1) is fixed on the outermost crossbeam (12) among the multiple crossbeams (12). The crossbeam anti-rotation unit is connected to the crossbeam (12) to prevent the crossbeam from turning over around its own axis.

2. The cloth pushing frame according to claim 1, characterized in that: The base support body (1) is a plane body formed by bending a pipe, and the cross section of the pipe of the base support body (1) is circular.

3. The cloth pushing frame according to claim 1, characterized in that: The base support body (1) is a trapezoidal plane body which is narrow at the front and wide at the rear, with a closed front end and an open rear end, and a reinforcing cross bar (1-3) is arranged between the front end and the rear end.

4. The cloth pushing frame according to claim 1, characterized in that: It also comprises a first connecting plate (3-1) and a second connecting plate (3-2), wherein the lower end of the first connecting plate (3-1) is fixed to one end of the supporting base (1) in the length direction, and the lower end of the second connecting plate (3-2) is fixed to the other end of the supporting base (1) in the length direction, and the first connecting plate (3-1) and the second connecting plate (3-2) are located in the same plane and the front plate surfaces of both are fixed to the rear end of the supporting base (1).

5. The cloth pushing frame according to claim 4, characterized in that: The crossbeam anti-rotation unit comprises a first reverse force arm (2-1), the rod-shaped first reverse force arm (2-1) is located above the plane where the supporting base body (1) is located, and the upper end of the first connecting plate (3-1) is fixedly connected to the rear end of the first reverse force arm (2-1).

6. The cloth pushing frame according to claim 5, characterized in that: It also includes a sliding support block (20), which is fixed to the front end of the first reverse force arm (2-1).

7. The cloth pushing frame according to claim 5, characterized in that: It also includes a first roller (30), which is fixed to the front end of the first reverse force arm (2-1).

8. The cloth pushing frame according to claim 5, characterized in that: It also includes a second reverse force arm (2-2), the rod-shaped body of the second reverse force arm (2-2) is located above the plane where the base support body (1) is located, the rear end of the second reverse force arm (2-2) is fixed to the front plate surface of the second connecting plate (3-2), and the projection of the second reverse force arm (2-2) onto the plane where the base support body (1) is located is located on the side of the base support body (1) and is arranged on both sides of the base support body (1) together with the first reverse force arm (2-1).

9. An air-cooled island antifreeze curtain using a cloth pusher as described in any one of claims 1 to 3, comprising an antifreeze curtain (11), a plurality of beams (12), two guide rails (13) and a plurality of wheels (14), a wheel (14) is arranged at each end of each beam (12), the plurality of beams (12) are parallel to each other, the plurality of beams (12) are evenly distributed and fixedly connected to the antifreeze curtain (11), the two guide rails (13) are parallel to each other, and the wheels (14) at the ends of each beam (12) are arranged in one guide rail (13) to realize rolling constrained by the guide rail (13); characterized in that: It also includes a cloth pushing frame, a bottom supporting body (1) fixed on the outer wall of the outermost cross beam (12), and the bottom supporting body (1) is inserted forward into the lower hem of the antifreeze cloth curtain (11).

10. The air-cooling island antifreeze curtain according to claim 9, characterized in that: The invention also comprises a crossbeam anti-rotation unit, which is connected to the crossbeam (12) to prevent the crossbeam from turning over around its own axis.

11. The air-cooling island antifreeze curtain according to claim 10, characterized in that: The crossbeam anti-rotation unit comprises at least one pair of auxiliary rollers (50), the auxiliary rollers (50) being respectively arranged adjacent to the wheels (14) arranged at both ends of the outermost crossbeam (12), and each auxiliary roller (50) being arranged front and rear between the adjacent wheels (14), and the wheel axles between the auxiliary rollers (50) and the wheels (14) being parallel and fixedly connected to the ends of the crossbeam (12).

12. The air-cooling island antifreeze curtain according to claim 10, characterized in that: The crossbeam anti-rotation unit comprises at least one pair of auxiliary gear levers (80) and a pair of wheel forks (90), wherein the wheel forks (90) are respectively arranged on the wheels (14) at both ends of the outermost crossbeam (12), the wheel forks (90) are fixed on the wheel axle (100) of the wheel (14), one end of the auxiliary gear lever (80) in the length direction is fixed on the top of the wheel fork (90), and the front end of each auxiliary gear lever (80) extends between the upper part of the wheel rim of the adjacent wheel (14) and the inner surface of the guide rail (13).

13. The air-cooling island antifreeze curtain according to claim 9, characterized in that: The support base body (1) comprises a rope body (1-1) and two tension springs (1-2), wherein the rope body (1-1) is connected in the middle of the two tension springs (1-2); the cloth pushing frame further comprises a left front plug connector (7-1), a right front plug connector (7-2), a wall plate (7-3), a hook plate (7-4), a wheel seat plate (7-5), a front nylon wheel (7-6) and a rear nylon wheel (7-7), wherein the front end of the left front plug connector (7-1) and the front end of the right front plug connector (7-2) are respectively connected to the two ends of the support base body (1), and the left front plug connector (7-1) is connected to the rear nylon wheel (7-6). ) and the rear end of the right front plug connector (7-2) are respectively fixed to the lower end of a wall panel (7-3), the upper end of each wall panel (7-3) is fixed to one end of a rolling hook plate (7-4), and the rolling hook plate (7-4) is rolled and fixed to the outer surface of the crossbeam (12); a wheel seat plate (7-5) is respectively fixed to the outer end of the crossbeam (12), and a front nylon wheel (7-6) and a rear nylon wheel (7-7) are arranged on the outer side surface of the wheel seat plate (7-5), and the front nylon wheel (7-6) and the rear nylon wheel (7-7) are arranged in a front-to-back order in the guide rail (13).

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