CN111361492B

CN111361492B - Film curtain overspeed device tensioner

Info

Publication number: CN111361492B
Application number: CN201811590231.7A
Authority: CN
Inventors: 孔维
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2023-05-09
Anticipated expiration: 2038-12-25
Also published as: CN111361492A

Abstract

The invention discloses a film curtain tensioning device, wherein a winch is arranged in a carriage, a U-shaped side fixing plate is fixed on the outer side wall of the carriage close to the winch, fixing channel steel is fixed at two ends of the outer side wall of the carriage far away from the winch, a plurality of connecting rods are respectively hinged to the fixing channel steel through a plurality of inserting shafts, a connecting seat is hinged to the other ends of the connecting rods through inserting shafts, and the connecting seat is fixed on the outer side wall of a movable vertical slideway; a traction rope is wound and fixed on the winch, the other end of the traction rope is connected with a lifting rod, the upper end of the lifting rod is fixedly provided with a first stay cord, the other end of the first stay cord is connected with an upper fixing rod, and the upper fixing rod is fixed with the left end of the film and television curtain; the right end of the film and television curtain is fixedly provided with a counterweight rod, and the two side ends of the film and television curtain are fixedly connected with tensioning rods; the two ends of the upper fixed rod and the counterweight rod are both fixed with connecting rods, and the other ends of the connecting rods are fixed with movable sliding blocks. The curtain has the beneficial effect that the curtain has a good unfolding effect.

Description

Film curtain overspeed device tensioner

Technical Field

The invention relates to the technical field of curtains, in particular to a film and television curtain tensioning device.

Background

The curtain is equipment matched with the projector for receiving the projection of the projector; in many outdoor occasions, the film and television propaganda show is carried out by matching a curtain with a projector; when people use the curtain, the curtain is vertically unfolded before people, the lower edge of the curtain is provided with a pull rod slightly longer than the width of the curtain, and the pull rod has certain weight to tighten the curtain, so that the surface of the curtain is flat. However, the tension applied by the tension rod to the curtain is in the vertical direction, and if it is desired to spread the curtain more evenly, tension should be applied to both sides of the curtain. Therefore, the curtain has good unfolding effect, and in order to achieve the purpose, a film curtain tensioning device needs to be developed.

Disclosure of Invention

In order to enable a curtain to have a good unfolding effect, the invention provides a film curtain tensioning device.

In order to achieve the above purpose, the present invention adopts the following technical scheme:

a film curtain tensioning device comprises a projection vehicle and a carriage, wherein the carriage is arranged on the projection vehicle; the inside of the carriage is provided with a winch, a U-shaped side fixing plate is fixed on the outer side wall of the carriage, two ends of the outer side wall of the carriage, which is far away from the winch, are fixed with fixing channel steels, the fixing channel steels are respectively hinged with a plurality of connecting rods through a plurality of inserting shafts, the other ends of the connecting rods are hinged with connecting seats through inserting shafts, and the connecting seats are fixed on the outer side wall of the movable vertical slideway; the winch is fixedly wound with a traction rope, the other end of the traction rope is connected with a lifting rod after being guided by a guide wheel, the lifting rod is arranged in a U-shaped side fixing plate, the upper end of the lifting rod is fixedly provided with a first stay rope, the other end of the first stay rope is connected with an upper fixing rod, the upper fixing rod is fixed with the left end of a film and television curtain, the two ends of the upper fixing rod extend into a U-shaped transverse fixing slideway, and the U-shaped transverse fixing slideway is fixed on the outer top wall of a carriage; the right end of the film and television curtain is fixedly provided with a counterweight rod, two side ends of the film and television curtain are fixedly connected with tensioning rods, the other ends of the tensioning rods are inserted into tensioning sliding blocks, one ends of the tensioning rods, which are far away from the film and television curtain, are fixedly provided with spring baffles, the spring baffles are arranged in grooves formed in the tensioning sliding blocks, and springs I are arranged between the spring baffles in the tensioning sliding blocks and the side walls of the grooves formed in the tensioning sliding blocks and are sleeved on the tensioning rods; the movable vertical slideway is provided with a rope passing hole at one end close to the connecting seat, a sliding groove is provided at one end far away from the connecting seat, and a tensioning sliding block is arranged in the sliding groove in a sliding manner; the two ends of the upper fixed rod and the counterweight rod are both fixed with connecting rods, the other ends of the connecting rods are fixed with movable sliding blocks, and the movable sliding blocks are arranged in the sliding grooves of the U-shaped transverse fixed sliding way and the movable vertical sliding way; the inner bottom end of the movable vertical slideway is fixedly provided with a hinging seat, the hinging seat is hinged with a pull rod, a pull rope II is fixed on the pull rod, the other end of the pull rope II is connected with a locking block through a rope passing hole, the locking block is arranged in a locking box, and the locking box is fixed on the outer top wall of the carriage; a second spring is arranged between one end of the locking block, which is close to the second stay cord, and the inner side wall of the lock box, and one end of the locking block, which is far away from the second stay cord, extends out of the lock box and extends into the clamping groove, wherein the clamping groove is arranged on the movable vertical slideway; an outer sleeve is hinged on a connecting rod at the lowest end hinged with the fixed channel steel, an inner sleeve is inserted into the outer sleeve, one end, far away from the outer sleeve, of the inner sleeve is hinged on the inner side wall of the fixed channel steel, a spring III is arranged between the inner sleeve and the outer sleeve, and the spring III is arranged inside the inner sleeve and the outer sleeve.

Further, an upper fixing plate is fixed at the top end of the U-shaped transverse fixing slideway.

Further, a limiting groove is formed in the lock block, a limiting block is arranged in the limiting groove, and the limiting block is fixed on the inner side wall of the lock box.

The beneficial effects of the invention are as follows: the device can tension the two sides of the curtain, so that the curtain has a good unfolding effect and is very practical.

Drawings

FIG. 1 is a schematic diagram of a video curtain tensioner according to the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1A;

FIG. 3 is a schematic diagram of the connection of a movable vertical slideway;

FIG. 4 is an enlarged view of a portion of FIG. 3B;

FIG. 5 is a schematic diagram of the connection of a video curtain and a tension rod;

FIG. 6 is a schematic view of the installation position of the hoist;

FIG. 7 is an enlarged view of a portion of FIG. 6C;

FIG. 8 is an enlarged view of a portion of FIG. 6D;

FIG. 9 is an enlarged view of a portion of FIG. 6E;

FIG. 10 is a schematic illustration of a video curtain as it is deployed;

FIG. 11 is an enlarged view of a portion of FIG. 10F;

FIG. 12 is an enlarged view of a portion of FIG. 11G;

FIG. 13 is an enlarged view of a portion of FIG. 10H;

FIG. 14 is an enlarged view of a portion of FIG. 13J;

FIG. 15 is a schematic illustration of a video curtain being tensioned;

FIG. 16 is an enlarged view of a portion of FIG. 15K;

FIG. 17 is an enlarged view of a portion of FIG. 15L;

in the figure, 1, a projection vehicle; 2. a carriage; 3. a hoist; 4. fixing channel steel; 5. a connecting rod; 6. a movable vertical slideway; 7. a traction rope; 8. a guide wheel; 9. a lifting rod; 10. a first pull rope; 11. an upper fixing rod; 12. a film curtain; 13. a weight bar; 14. u-shaped side fixing plates; 15. an upper fixing plate; 16. a connecting seat; 17. inserting a shaft; 18. rope passing holes; 19. tensioning the sliding block; 20. a first spring; 21. a tension rod; 22. a movable slide block; 23. a connecting rod; 24. a pull rod; 25. a hinge base; 26. a second rope; 27. a locking piece; 28. a lock box; 29. a limiting block; 30. a clamping groove; 31. a second spring; 32. an outer sleeve; 33. an inner sleeve; 34. a third spring; 35. u-shaped transverse fixed slide way.

Detailed Description

The technical scheme in the embodiment of the invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the invention, as shown in fig. 1-17, a film and television curtain tensioning device comprises a projection vehicle 1 and a carriage 2, wherein the carriage 2 is arranged on the projection vehicle 1; a winch 3 is arranged in the carriage 2, a U-shaped side fixing plate 14 is fixed on the outer side wall of the carriage 2 close to the winch 3, fixing channel steels 4 are fixed at two ends of the outer side wall of the carriage 2 far away from the winch 3, the fixing channel steels 4 are respectively hinged with a plurality of connecting rods 5 through a plurality of inserting shafts 17, the other ends of the connecting rods 5 are hinged with connecting seats 16 through the inserting shafts 17, and the connecting seats 16 are fixed on the outer side wall of the movable vertical slideway 6; a traction rope 7 is wound and fixed on the winch 3, the other end of the traction rope 7 is guided by a guide wheel 8 and then is connected with a lifting rod 9, the lifting rod 9 is arranged in a U-shaped side fixing plate 14, a first pull rope 10 is fixed at the upper end of the lifting rod 9, an upper fixing rod 11 is connected with the other end of the first pull rope 10, the upper fixing rod 11 is fixed with the left end of a film and television curtain 12, two ends of the upper fixing rod 11 extend into a U-shaped transverse fixing slideway 35, and the U-shaped transverse fixing slideway 35 is fixed on the outer top wall of a carriage 2; the right end of the film and television curtain 12 is fixedly provided with a counterweight rod 13, two side ends of the film and television curtain 12 are fixedly connected with tensioning rods 21, the other ends of the tensioning rods 21 are inserted into tensioning sliding blocks 19, one ends of the tensioning rods 21, which are far away from the film and television curtain 12, are fixedly provided with spring baffles, the spring baffles are arranged in grooves formed in the tensioning sliding blocks 19, springs I20 are arranged between the spring baffles in the tensioning sliding blocks 19 and the side walls of the grooves formed in the tensioning sliding blocks 19, and the springs I20 are sleeved on the tensioning rods 21; a rope passing hole 18 is formed in one end, close to the connecting seat 16, of the movable vertical slideway 6, a sliding groove is formed in one end, far away from the connecting seat 16, of the movable vertical slideway 6, and a tensioning sliding block 19 is arranged in the sliding groove in a sliding manner; a connecting rod 23 is fixed at both ends of the upper fixed rod 11 and the counterweight rod 13, a movable slide block 22 is fixed at the other end of the connecting rod 23, and the movable slide block 22 is arranged in the sliding grooves of the U-shaped transverse fixed sliding way 35 and the movable vertical sliding way 6; a hinging seat 25 is fixed at the inner bottom end of the movable vertical slideway 6, a pull rod 24 is hinged to the hinging seat 25, a second pull rope 26 is fixed on the pull rod 24, the other end of the second pull rope 26 is connected with a locking block 27 through a rope passing hole 18, the locking block 27 is arranged in a locking box 28, and the locking box 28 is fixed on the outer top wall of the carriage 2; a second spring 31 is arranged between one end of the locking piece 27, which is close to the second stay cord 26, and the inner side wall of the lock box 28, and one end of the locking piece 27, which is far away from the second stay cord 26, extends out of the lock box 28 and into a clamping groove 30, wherein the clamping groove 30 is arranged on the movable vertical slideway 6; an outer sleeve 32 is hinged on the connecting rod 5 at the lowest end hinged with the fixed channel steel 4, an inner sleeve 33 is inserted into the outer sleeve 32, one end of the inner sleeve 33, far away from the outer sleeve 32, is hinged on the inner side wall of the fixed channel steel 4, a spring III 34 is arranged between the inner sleeve 33 and the outer sleeve 32, and the spring III 34 is arranged inside the inner sleeve 33 and the outer sleeve 32;

wherein the top end of the U-shaped transverse fixing slideway 35 is fixed with an upper fixing plate 15;

the lock block 27 is provided with a limit groove, a limit block 29 is arranged in the limit groove, and the limit block 29 is fixed on the inner side wall of the lock box 28;

wherein a sliding groove is formed on the side wall of one end of the movable vertical slideway 6 far away from the connecting seat 16, and the tensioning rod 21 can slide up and down in the sliding groove.

In this embodiment, when the video curtain 12 is needed, the winch 3 is started first, the winch 3 will loosen the traction rope 7 wound and fixed on the winch 3 body, at this time, under the gravity action of the weight rod 13, the weight rod 13 will drive the right end of the video curtain 12 to move downwards, the tensioning slide blocks 19 at two ends of the video curtain 12 will slide from the U-shaped transverse fixed slide way 35 to the slide grooves of the movable vertical slide way 6, and the tensioning slide blocks 19 will move downwards along with the video curtain 12; when the counterweight rod 13 drives the movie curtain 12 to move to the lower end of the movable vertical slideway 6, the movable sliding blocks 22 at the two ends of the counterweight rod 13 downwards press the pull rod 24 under the action of gravity of the counterweight rod 13, in the downward movement process of the pull rod 24, the pull rod 24 downwards pulls the pull rope II 26, the pull rope II 26 pulls the locking block 27 to enable the locking block 27 to move in a direction away from the clamping groove 30, when the locking block 27 is separated from the clamping groove 30, under the action of the gravity of the movable vertical slideway 6 and the gravity of the counterweight rod 13, the movable vertical slideway 6 downwards moves, in the downward movement process of the movable vertical slideway 6, the movable vertical slideway 6 rotates around the fixed channel steel 4, at the moment, the movable vertical slideway 6 moves in a direction close to the fixed channel steel 4, and at the moment, the tensioning rod 21 tightens the two sides of the movie curtain 12; at the same time, the outer sleeve 32 will compress the third spring 34 to move in a direction approaching the inner sleeve 33; at this time, the winding machine 3 is turned off, and the expansion work of the video curtain 12 is completed.

When the film and television curtain 12 is used, the winch 3 is reversely started, the winch 3 pulls the traction rope 7, the traction rope 7 is rewound and fixed on the winch 3 body, the traction rope 7 can pull the lifting rod 9 downwards, the lifting rod 9 can pull the upper fixing rod 11 through the first pull rope 10, the upper fixing rod 11 pulls the film and television curtain 12 to return to the original position, at the moment, the film and television curtain 12 can drive the counterweight rod 13 to move upwards, at the moment, the movable sliding blocks 22 at the two ends of the counterweight rod 13 do not compress the pull rod 24 any more, at the moment, the third spring 34 overcomes the gravity of the movable vertical sliding way 6, the movable vertical sliding way 6 is pushed upwards, the movable vertical sliding way 6 returns to the original position, after the movable vertical sliding way 6 returns to the original position, the movable sliding blocks 22 are completely separated from the pull rod 24, under the elastic force of the second spring 31, the locking block 27 can move towards the direction close to the clamping groove 30, the movable vertical sliding way 6 is prevented from descending, at the moment, the winch 3 continues to pull the lifting rod 9 through the traction rope 7, and the lifting rod 9 returns to the original position of the film and television curtain 12 through the first pull rope 10 and the upper fixing rod 11.

The above technical solution only represents the preferred technical solution of the present invention, and some changes that may be made by those skilled in the art to some parts of the technical solution represent the principles of the present invention, and the technical solution falls within the scope of the present invention.

Claims

1. The utility model provides a movie & TV curtain overspeed device tensioner, includes projection car (1) and carriage (2), and carriage (2) set up on projection car (1), its characterized in that: the inside of the carriage (2) is provided with a winch (3), a U-shaped side fixing plate (14) is fixed on the outer side wall of the carriage (2) close to the winch (3), fixing channel steels (4) are fixed at two ends of the outer side wall of the carriage (2) far away from the winch (3), the fixing channel steels (4) are respectively hinged with a plurality of connecting rods (5) through a plurality of inserting shafts (17), the other ends of the connecting rods (5) are hinged with connecting seats (16) through the inserting shafts (17), and the connecting seats (16) are fixed on the outer side wall of the movable vertical slide way (6); the winch (3) is fixedly wound with a traction rope (7), the other end of the traction rope (7) is connected with a lifting rod (9) after being guided by a guide wheel (8), the lifting rod (9) is arranged in a U-shaped side fixing plate (14), a first pull rope (10) is fixed at the upper end of the lifting rod (9), an upper fixing rod (11) is connected with the other end of the first pull rope (10), the upper fixing rod (11) is fixed with the left end of a film and television curtain (12), the two ends of the upper fixing rod (11) extend into a U-shaped transverse fixing slideway (35), and the U-shaped transverse fixing slideway (35) is fixed on the outer top wall of a carriage (2); the right end of the film and television curtain (12) is fixedly provided with a counterweight rod (13), two side ends of the film and television curtain (12) are fixedly connected with tensioning rods (21), the other ends of the tensioning rods (21) are inserted into tensioning sliding blocks (19), one ends of the tensioning rods (21) far away from the film and television curtain (12) are fixedly provided with spring baffles, the spring baffles are arranged in grooves formed in the tensioning sliding blocks (19), a first spring (20) is arranged between the spring baffles in the tensioning sliding blocks (19) and the side walls of the grooves formed in the tensioning sliding blocks (19), and the first spring (20) is sleeved on the tensioning rods (21); a rope passing hole (18) is formed in one end, close to the connecting seat (16), of the movable vertical slideway (6), a sliding groove is formed in one end, far away from the connecting seat (16), of the movable vertical slideway (6), and a tensioning sliding block (19) is arranged in the sliding groove in a sliding mode; the two ends of the upper fixed rod (11) and the counterweight rod (13) are both fixed with a connecting rod (23), the other end of the connecting rod (23) is fixed with a movable slide block (22), and the movable slide block (22) is arranged in the sliding grooves of the U-shaped transverse fixed sliding way (35) and the movable vertical sliding way (6); the inner bottom end of the movable vertical slideway (6) is fixedly provided with a hinging seat (25), the hinging seat (25) is hinged with a pull rod (24), a second pull rope (26) is fixed on the pull rod (24), the other end of the second pull rope (26) is connected with a locking block (27) through a rope passing hole (18), the locking block (27) is arranged in a locking box (28), and the locking box (28) is fixed on the outer top wall of the carriage (2); a second spring (31) is arranged between one end of the locking block (27) close to the second stay cord (26) and the inner side wall of the lock box (28), one end of the locking block (27) far away from the second stay cord (26) extends out of the lock box (28) and extends into the clamping groove (30), and the clamping groove (30) is arranged on the movable vertical slideway (6); an outer sleeve (32) is hinged on a connecting rod (5) at the lowest end hinged with the fixed channel steel (4), an inner sleeve (33) is inserted in the outer sleeve (32), one end, far away from the outer sleeve (32), of the inner sleeve (33) is hinged on the inner side wall of the fixed channel steel (4), a spring III (34) is arranged between the inner sleeve (33) and the outer sleeve (32), and the spring III (34) is arranged inside the inner sleeve (33) and the outer sleeve (32).

2. The video curtain tensioning device of claim 1, wherein: an upper fixing plate (15) is fixed at the top end of the U-shaped transverse fixing slideway (35).

3. The film and television curtain tensioning device according to claim 1, wherein the locking block (27) is provided with a limiting groove, a limiting block (29) is arranged in the limiting groove, and the limiting block (29) is fixed on the inner side wall of the lock box (28).