Roller shutter for covering long jump sandpit

Abstract

The invention discloses a roller shutter for covering a long jump sandpit, which comprises a basic frame body arranged on the sandpit, the basic frame body is provided with a sandpit roller shutter, the sandpit roller shutter comprises two mounting brackets arranged on the basic frame body and along the length direction of the sandpit, the mounting brackets are respectively arranged on the two side edges of the sandpit, and the mounting brackets are arranged on the two side edges of the sandpit. A rail protection plate is fixed to the top of the mounting support, a guide rail is mounted in the rail protection plate, a through groove is formed in one side of the rail protection plate, a winding box is arranged at the end, located in the sandpit, of the foundation frame body, a covering roller shutter stretching outwards is arranged in the winding box, a pull rod is mounted at the extending end of the covering roller shutter, and a guide rail is mounted in the guide rail. A locking mechanism for locking the pull rod after the pull rod is stretched to the edge is arranged at the outer end part of the track protection plate; the device has a good protection effect on the sandpit when the sandpit is not used, and is convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field related to sports, and particularly to a rolling curtain for covering a long jump sandpit. Background Art

[0002] When there is strong wind, the sand in the long jump sandpit will be blown out along with the wind, and sundries such as leaves will also fall into the sandpit; cats and dogs like to excrete in the sand and will habitually bury their excrement. These situations cause troubles to those who carry out long jump sports and also pose great difficulties to the cleaning and maintenance work of the sandpit. To solve these situations, currently, staff will cover the sandpit with materials such as wooden boards, steel plates, and canvas. Each time these materials are used, they need to be moved away, and after the sports are over, they need to be reset. This is not only time-consuming and laborious, but also the stacking of materials poses some potential safety hazards to the personnel on the sports field. Summary of the Invention

[0003] To solve the defects existing in the prior art, the present invention provides a rolling curtain for covering a long jump sandpit.

[0004] To solve the above technical problems, the present invention provides the following technical solutions:

[0005] A rolling curtain for covering a long jump sandpit according to the present invention includes a basic frame body arranged on the sandpit. A sandpit rolling curtain is provided on the basic frame body. The sandpit rolling curtain includes two installation brackets arranged on the basic frame body along the length direction of the sandpit. The installation brackets are respectively arranged on both side edges of the sandpit. A track guard plate is fixed at the top of the installation bracket. A guiding track is installed inside the track guard plate. And a through groove is provided on one side of the track guard plate. A winding box is arranged at one end of the basic frame body located at the sandpit. A covering rolling curtain that stretches outwards is arranged in the winding box. A pull rod is installed at the extending end of the covering rolling curtain. And pulleys that pass through the through groove and walk along the guiding track are installed at both ends of the pull rod through a fixing frame. And a locking mechanism for locking the pull rod after it is stretched to the edge is arranged at the outer end of the track guard plate.

[0006] As a preferred technical solution of the present invention, the winding box includes a box body fixed on the basic frame body through a retaining frame. And a winding shaft is arranged in the box body. The winding shaft is used for winding the covering rolling curtain. And a guiding shaft and a tensioning shaft are also arranged in the box body. The covering rolling curtain bypasses the guiding shaft and the tensioning shaft and is wound on the winding shaft. And a driving mechanism for driving the winding shaft to rotate is arranged on the outer wall of the box body.

[0007] As a preferred technical solution of the present invention, the driving mechanism includes a large gear provided at the end of the winding shaft. A transmission shaft is fixed on the side wall of the box body, and a small gear meshing with the large gear is provided at the inner end of the transmission shaft. A large bevel gear is installed at the outer end of the transmission shaft, and a vertically arranged input shaft is installed on the outer part of the side wall of the box body. A small bevel gear meshing with the large bevel gear is provided at the bottom end of the input shaft.

[0008] As a preferred technical solution of the present invention, a protective box for covering the large bevel gear and the small bevel gear is provided outside the winding box, and a through hole corresponding to the input shaft is provided in the protective box.

[0009] As a preferred technical solution of the present invention, the locking mechanism includes a lock catch arranged in the track guard plate through a positioning shaft and rotating along the positioning shaft. A limiting shaft for limiting the lock catch is also fixed on the track guard plate. A lock rod is installed in the pull rod. The two ends of the lock rod extend into the track guard plate, and a notch part cooperating with the lock catch is provided at the end. A handle plate for driving the lock rod to rotate is provided on the pull rod.

[0010] As a preferred technical solution of the present invention, a guiding part in contact with the pull rod is provided on the lock catch. After the pull rod contacts the lock catch, the pull rod jacks up the lock catch through the guiding part to open the lock catch.

[0011] As a preferred technical solution of the present invention, rubber pads are provided on the upper surfaces of the pull rod, the track guard plate and the box body.

[0012] The beneficial effects of the present invention are as follows:

[0013] When opening the rolling curtain for covering the long jump sand pit, by pulling the pull rod, the covering rolling curtain is opened together. When the lock rod touches the lock catch, the lock rod lifts the lock catch. When the lock rod moves past the lock catch, the lock catch automatically falls to lock the lock rod, so that the pull rod cannot move in the reverse direction, and the pull rod lock catch device remains in the locked state. When closing the rolling curtain: when the pull rod lock catch device is in the locked state, rotate the handle plate to make it in the released state. Since the lock rod is connected to the handle plate, when rotating the handle plate, the lock rod also rotates together, and the pull rod moves in the reverse direction to lift the lock catch, so as to disengage the pull rod and make it move. Hold the sleeve with a hand drill or wrench and insert it into the input shaft, rotate the input shaft, the small bevel gear drives the large bevel gear to rotate, the large bevel gear shaft rotates accordingly, the small gear also rotates when the large bevel gear shaft rotates, the small gear drives the large gear, and the reel also rotates accordingly, so as to drive the rolling curtain to close, which has the characteristics of easy operation. Description of the Drawings

[0014] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0015] In the accompanying drawings:

[0016] Figure 1 is a schematic structural view of a rolling curtain for covering a long jump sandpit according to the present invention;

[0017] Figure 2 is a schematic assembly view of a rolling curtain for covering a long jump sandpit according to the present invention;

[0018] Figure 3 is an exploded structural view of a rolling curtain for covering a long jump sandpit according to the present invention;

[0019] Figure 4 is a schematic structural view of a large gear of a rolling curtain for covering a long jump sandpit according to the present invention;

[0020] Figure 5 is a schematic structural view of an input shaft of a rolling curtain for covering a long jump sandpit according to the present invention;

[0021] Figure 6 is a schematic structural view of a protective box of a rolling curtain for covering a long jump sandpit according to the present invention;

[0022] Figure 7 is a schematic structural view of a pulley of a rolling curtain for covering a long jump sandpit according to the present invention;

[0023] Figure 8 is a schematic installation structural view of a guide rail of a rolling curtain for covering a long jump sandpit according to the present invention;

[0024] Figure 9 is a schematic structural view of a pull rod of a rolling curtain for covering a long jump sandpit according to the present invention;

[0025] Figure 10 is a schematic structural view of a locking mechanism of a rolling curtain for covering a long jump sandpit according to the present invention;

[0026] Figure 11 is a schematic view of the opening of a lock catch of a rolling curtain for covering a long jump sandpit according to the present invention;

[0027] Figure 12 is a schematic structural view of a winding shaft of a rolling curtain for covering a long jump sandpit according to the present invention.

[0028] In the figure: 1. Basic frame; 2. Sand pit rolling curtain; 3. Installation bracket; 4. Track guard plate; 5. Guide track; 6. Reel box; 7. Covering rolling curtain; 8. Pull rod; 9. Fixed frame; 10. Pulley; 12. Retaining frame; 13. Box body; 14. Reel shaft; 15. Guide shaft; 16. Tensioning shaft; 17. Large gear; 18. Transmission shaft; 19. Small gear; 20. Large bevel gear; 21. Input shaft; 22. Small bevel gear; 23. Protection box; 24. Through hole; 25. Positioning shaft; 26. Lock; 27. Limit shaft; 28. Lock rod; 29. Cut part; 30. Handle plate; 31. Guide part; 32. Rubber pad. Detailed implementation manner

[0029] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0030] Embodiment: As Figures 1 - 12 shown, a rolling curtain for covering a long jump sand pit of the present invention includes a basic frame body 1 arranged on the sand pit. A sand pit rolling curtain 2 is provided on the basic frame body 1. The sand pit rolling curtain 1 includes two installation brackets 3 arranged on the basic frame body 1 and along the length direction of the sand pit. The installation brackets 3 are respectively arranged on both side edges of the sand pit. A track guard plate 4 is fixed on the top of the installation bracket 3. A guide track 5 is installed inside the track guard plate 4, and a through groove 5 is provided on one side of the track guard plate 4. A reel box 6 is arranged at one end of the basic frame body 1 located at the sand pit. A covering rolling curtain 7 that stretches outwards is arranged in the reel box 6. A pull rod 8 is installed at the extending end of the covering rolling curtain 7. Both ends of the pull rod 8 are installed with pulleys 10 that pass through the through groove 5 and penetrate into the inside of the track guard plate 4 and walk along the guide track 5 through a fixed frame 9. A locking mechanism for locking the pull rod 8 after the pull rod 8 is stretched to the edge is provided at the outer end of the track guard plate 4. By moving the pull rod 8 along the guide track 5, the covering rolling curtain 7 can be unfolded, which is convenient for covering. When the covering rolling curtain 7 is not needed, it can be wound up through the reel box, which is convenient for operation.

[0031] Among them, the reel box 6 includes a box body 13 fixed on the basic frame body 1 through a retaining frame 12. A reel shaft 14 is arranged inside the box body 13, and the reel shaft 14 is used for winding up the covering rolling curtain 7. A guide shaft 15 and a tensioning shaft 16 are also arranged inside the box body 13. The covering rolling curtain 2 bypasses the guide shaft 15 and the tensioning shaft 16 and is wound on the reel shaft 14. A driving mechanism for driving the reel shaft 14 to rotate is also arranged on the outer wall of the box body 13, so as to ensure that the covering rolling curtain 7 has better winding flatness.

[0032] Among them, the driving mechanism includes a large gear 17 provided at the shaft end of the winding shaft 14. A transmission shaft 18 is fixed on the side wall of the box body 13. A small gear 19 that meshes with and drives the large gear 17 is provided at the inner end of the transmission shaft 18. A large bevel gear 20 is installed at the outer end of the transmission shaft 18. A vertically arranged input shaft 21 is installed on the outer part of the side wall of the box body 13. A small bevel gear 22 that meshes with and drives the large bevel gear 20 is provided at the bottom end of the input shaft 21. Clamp the sleeve with a hand drill or wrench and insert it into the input shaft 21. Rotate the input shaft 21. The small bevel gear 22 drives the large bevel gear 20 to rotate. The shaft of the large bevel gear 20 rotates accordingly. The small gear on the shaft of the large bevel gear 20 also rotates together. The small gear drives the large gear, and the reel also rotates accordingly, thereby driving the rolling curtain to retract, which has the characteristic of being easy to operate.

[0033] Among them, a protective box 23 for covering the large bevel gear 20 and the small bevel gear 22 is provided outside the winding box 6. A through hole 24 corresponding to the input shaft 21 is provided in the protective box 23, which is convenient for using an electric wrench to rotate the input shaft.

[0034] Among them, the locking mechanism includes a lock catch 26 that is arranged in the track guard plate 4 via a positioning shaft and rotates along the positioning shaft 25. A limiting shaft 27 for limiting the lock catch 26 is also fixed on the track guard plate 4. A lock rod 28 is installed in the pull rod 8. The two end parts of the lock rod 28 extend into the track guard plate 4, and a notch part 29 that cooperates with the lock catch 26 is provided at the end part. A handle plate 30 for driving the lock rod to rotate is provided on the pull rod 8. When opening the rolling curtain, by pulling the pull rod 8, the covering rolling curtain 7 is opened together. When the lock rod 28 touches the lock catch 26, the lock rod 28 lifts the lock catch 26. When the lock rod 28 moves past the lock catch 26, the lock catch 26 automatically drops, thereby locking the lock rod 28 and preventing the pull rod 8 from moving in the reverse direction. The pull rod 8 and the lock catch 26 device remain in the locked state. When retracting the rolling curtain: when the pull rod 8 and the lock catch 26 device are in the locked state, rotate the handle plate 30 to make it in the released state. Since the lock rod 28 is connected to the handle plate 30, when rotating the handle plate 30, the lock rod 28 also rotates together. The pull rod 8 moves in the reverse direction to lift the lock catch 26, thereby disengaging the pull rod 8 and enabling it to move.

[0035] The lock catch 26 is provided with a guiding part 31 that contacts the pull rod 8. After the pull rod 8 contacts the lock catch 26, the pull rod 8 jacks up the lock catch 26 through the guiding part 31, opening the lock catch 26, which is easy to lock and unlock, and thus has the characteristic of being easy to operate.

[0036] Rubber pads 32 are provided on the upper surfaces of the pull rod 8, the track guard plate 4, and the box body 13, which play a role in preventing collision.

[0037] During operation, for the rolling curtain used to cover the long jump sandpit, when opening the rolling curtain, pulling the pull rod 8 causes the covering rolling curtain 7 to open together. When the locking rod 28 touches the locking buckle 26, the locking rod 28 lifts the locking buckle 26. When the locking rod 28 moves past the locking buckle 26, the locking buckle 26 automatically drops, thereby locking the locking rod 28 and preventing the pull rod 8 from moving in the reverse direction, and the pull rod 8 - locking buckle 26 device remains in the locked state. When retracting the rolling curtain: when the pull rod 8 - locking buckle 26 device is in the locked state, rotate the handle plate 30 to make it in the released state. Since the locking rod 28 is connected to the handle plate 30, when rotating the handle plate 30, the locking rod 28 rotates together, and the pull rod 8 moves in the reverse direction to lift the locking buckle 26, thereby disengaging the pull rod 8 and enabling it to move. Clamp the sleeve with a drill or wrench and insert it into the input shaft 21, then rotate the input shaft 21. The small bevel gear 22 drives the large bevel gear 20 to rotate. The shaft of the large bevel gear 20 rotates accordingly, and the small gear connected to the shaft of the large bevel gear 20 rotates together. The small gear drives the large gear, and the reel also rotates accordingly, thereby driving the rolling curtain to retract, which has the characteristic of being easy to operate.

[0038] Finally, it should be noted that the above - mentioned are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rolling curtain for covering a long jump sandpit, characterized in that: It includes a foundation frame body (1) arranged on the sandpit, a sandpit rolling curtain (2) is provided on the foundation frame body (1), the sandpit rolling curtain (1) includes two mounting brackets (3) arranged on the foundation frame body (1) and along the length direction of the sandpit, the mounting brackets (3) are respectively arranged on both side edges of the sandpit, a track guard plate (4) is fixed at the top of the mounting bracket (3), a guiding track (5) is installed inside the track guard plate (4), and a through groove (5) is provided on one side of the track guard plate (4), a winding box (6) is arranged at one end of the foundation frame body (1) located at the sandpit, a covering rolling curtain (7) that stretches outwards is arranged in the winding box (6), a pull rod (8) is installed at the extending end of the covering rolling curtain (7), and both ends of the pull rod (8) are installed with pulleys (10) that penetrate into the inside of the track guard plate (4) from the through groove (5) and walk along the guiding track (5) through a fixing frame (9), and a locking mechanism for locking the pull rod (8) after it is stretched to the edge is provided at the outer end of the track guard plate (4).

2. The rolling curtain for covering a long jump sandpit according to claim 1, characterized in that The winding box (6) includes a box body (13) fixed on the foundation frame body (1) through a retaining frame (12), a winding shaft (14) is arranged in the box body (13), and the winding shaft (14) is used for winding the covering rolling curtain (7), a guiding shaft (15) and a tensioning shaft (16) are also arranged in the box body (13), and the covering rolling curtain (2) bypasses the guiding shaft (15) and the tensioning shaft (16) and is wound on the winding shaft (14), and a driving mechanism for driving the winding shaft (14) to rotate is also arranged on the outer wall of the box body (13).

3. A rolling curtain for covering a long jump sandpit according to claim 2, characterized in that, The driving mechanism includes a large gear (17) arranged at the shaft end of the winding shaft (14), a transmission shaft (18) is fixed on the side wall of the box body (13), a small gear (19) that meshes and drives with the large gear (17) is arranged at the inner end of the transmission shaft (18), a large bevel gear (20) is installed at the outer end of the transmission shaft (18), a vertically arranged input shaft (21) is installed on the outer part of the side wall of the box body (13), and a small bevel gear (22) that meshes and drives with the large bevel gear (20) is arranged at the bottom end of the input shaft (21).

4. A rolling curtain for covering a long jump sandpit according to claim 3, characterized in that, A protective box (23) for covering the large bevel gear (20) and the small bevel gear (22) is arranged outside the winding box (6), and a through hole (24) corresponding to the input shaft (21) is arranged in the protective box (23).

5. A rolling curtain for covering a long jump sandpit according to claim 1, characterized in that, The locking mechanism includes a lock catch (26) arranged in the track guard plate (4) through a positioning shaft and rotating along the positioning shaft (25), a limiting shaft (27) for limiting the lock catch (26) is also fixed on the track guard plate (4), a lock rod (28) is installed in the pull rod (8), both ends of the lock rod (28) extend into the track guard plate (4), and a notch part (29) that cooperates with the lock catch (26) is arranged at the end, and a handle plate (30) for driving the lock rod to rotate is arranged on the pull rod (8).

6. A rolling curtain for covering a long jump sandpit according to claim 5, characterized in that, The latch (26) is provided with a guiding portion (31) that contacts the pull rod (8). After the pull rod (8) contacts the latch (26), the pull rod (8) jacks up the latch (26) through the guiding portion (31) to open the latch (26).

7. A rolling curtain for covering a long jump sandpit according to claim 2, characterized in that, Rubber pads (32) are provided on the upper surfaces of the pull rod (8), the track guard plate (4), and the box body (13).

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