Telescopic cover plate with holes

Abstract

The utility model discloses a telescopic cover plate with holes, which comprises a left cover plate and a right cover plate, one side of the left cover plate is provided with the right cover plate, the bottom end of the left cover plate and the bottom end of the right cover plate are respectively provided with two groups of supporting frames, sliding rods are respectively arranged in the supporting frames, the surfaces of the sliding rods are respectively sleeved with a sliding block, and the sliding blocks are arranged on the left cover plate and the right cover plate. And the sliding blocks are slidably connected with the sliding rods, the surfaces of the portions, on one sides of the sliding blocks, of the sliding rods are sleeved with first springs, the first springs are connected with the sliding blocks, left bearing blocks are installed at the bottom ends of the sliding blocks, and connecting arms are installed in the left bearing blocks. According to the utility model, not only are convenient elastic drawing adapted to trenches with different widths and convenient combined installation of a plurality of groups of cover plates realized, but also the pressure borne by the cover plates can be elastically counteracted conveniently, the pressure borne by the cover plates and noise generated when a vehicle rolls over the cover plates are reduced, and the service life of the cover plates is prolonged; and the flexibility of installation and use is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of cover plates with holes, in particular to a telescopic cover plate with holes. Background Art

[0002] During the construction process, the trench cover is generally placed through the trench tongue and groove, or directly fixed on the trench. The former method will make the trench cover loose and movable. During long-term use, it will shake due to the passing of vehicles, causing the tongue and groove to gradually expand, and gradually become completely loose. Although the latter method solves the shaking and loosening problem, it is often fixed by welding or anchoring, and cannot be opened for maintenance later. In addition, in actual projects, due to the inconsistent trench widths in different rooms, it is often necessary to purchase covers of different widths on site, which cannot be unified. Therefore, in order to better use the trench cover, a retractable cover with holes is proposed.

[0003] For example, a retractable steel box girder manhole mesh cover disclosed in the authorization announcement number CN221276339U includes a rotating connecting rod rotatably connected to a steel box girder on one side of the manhole, and is characterized in that it also includes a plurality of support tubes, the support tubes are all arranged in parallel, the central axes of the support tubes are located on the same plane, adjacent support tubes are connected by an intermediate connecting piece, the support tube close to the rotating connecting rod is the head end support tube, and the support tube closest to the rotating connecting rod is the end support tube;

[0004] Although it has a simple structure and is easy to use, the mesh cover formed by the support rod and the support tube can ensure the reliability of support after ventilation. The combination of the mobile limit device and the limit locking device not only solves the problem of fixed size and inability to change, but also has a simple structure, is not easy to move, can be ventilated normally, can be recycled, is green and environmentally friendly, and can play a better manhole protection effect;

[0005] However, the problem that the existing perforated cover plates are not convenient for elastically pulling out to adapt to trenches of different widths and for convenient combined installation of multiple sets of cover plates during use is not solved, and that the pressure on the cover plates is not elastically offset, thus affecting the flexibility of installation and use. Utility Model Content

[0006] The purpose of the utility model is to provide a retractable cover plate with holes to solve the problem proposed in the above-mentioned background technology that the cover plate with holes is not convenient to be elastically pulled out to adapt to trenches of different widths and the convenient combined installation of multiple groups of cover plates, which is not conducive to elastically offsetting the pressure exerted on the cover plate, thus affecting the flexibility of installation and use.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a retractable cover plate with holes, comprising a left cover plate and a right cover plate, a right cover plate being arranged on one side of the left cover plate, two sets of support frames being installed at the bottom ends of the left cover plate and the right cover plate, a slide bar being installed inside the support frame, a slider being mounted on the surface of the slide bar, and the slider being slidably connected to the slide bar, a first spring being mounted on the surface of the slide bar on one side of the slider, and the first spring being connected to the slider, a left bearing block being installed at the bottom end of the slider, and the inside of the left bearing block They are all equipped with connecting arms, and a linkage shaft is installed at one end of the connecting arm close to the left bearing block, and the connecting arm is movably connected to the left bearing block through the linkage shaft, a right bearing block is installed at the bottom end of the supporting frame, a rotating arm is installed inside the right bearing block, a movable shaft is installed at one end of the rotating arm close to the right bearing block, and the rotating arm is movably connected to the right bearing block through the movable shaft, a hinge shaft is installed at one end of the connecting arm close to the rotating arm, and the connecting arm is movably connected to the rotating arm through the hinge shaft, and a supporting rubber block is movably installed at the bottom end of the rotating arm.

[0008] Preferably, a plurality of groups of left comb-shaped teeth with equal spacing are installed on the side wall of the left cover plate, and the left comb-shaped teeth are fixedly connected to the left cover plate.

[0009] Preferably, a plurality of groups of right comb-shaped teeth with equal spacing are installed on the side wall of the right cover plate, and the right comb-shaped teeth are fixedly connected to the right cover plate.

[0010] Preferably, the side walls of the left comb-shaped teeth are all equipped with inner T-shaped strips, and the side walls of the right comb-shaped teeth are all equipped with inner T-shaped grooves, and the inner T-shaped strips are slidably connected to the inner T-shaped grooves.

[0011] Preferably, one side of the left cover plate and the right cover plate is installed with an external T-shaped strip, and the other side of the left cover plate and the right cover plate is installed with an external T-shaped slot.

[0012] Preferably, a spring box is installed at the bottom end of the right comb-shaped teeth, and a connecting rod is slidably installed inside the spring box.

[0013] Preferably, a limiting ring is installed at one end of the connecting rod, a moving rod is installed at one end of the limiting ring, a second spring is mounted on the surface of the moving rod, and the second spring is connected to the spring box.

[0014] Preferably, a connecting block is installed at the other end of the connecting rod, and the connecting block is connected to the left cover plate.

[0015] Compared with the prior art, the beneficial effects of the utility model are: the perforated cover plate not only realizes convenient elastic pulling and adapting to trenches of different widths and convenient combined installation of multiple sets of cover plates, but also facilitates the elastic offset of the pressure exerted on the cover plate, reduces the pressure exerted on the cover plate and the noise generated by vehicles running over the cover plate, extends the service life of the cover plate, and improves the flexibility of installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the spring box of the utility model;

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the inner T-shaped bar of the utility model;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the support frame of the utility model;

[0020] Figure 5 It is a front view cross-sectional structural schematic diagram of the spring box of the utility model.

[0021] In the figure: 1. left cover plate; 2. left comb-shaped teeth; 3. right comb-shaped teeth; 4. right cover plate; 5. spring box; 6. support frame; 7. inner T-shaped bar; 8. inner T-shaped slot; 9. outer T-shaped bar; 10. outer T-shaped slot; 11. support rubber block; 12. rotating arm; 13. movable shaft; 14. sliding rod; 15. sliding block; 16. first spring; 17. linkage shaft; 18. connecting arm; 19. hinge shaft; 20. second spring; 21. connecting rod; 22. moving rod; 23. connecting block; 24. left bearing block; 25. right bearing block; 26. limiting ring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5The utility model provides an embodiment: a retractable cover plate with holes, comprising a left cover plate 1 and a right cover plate 4, a right cover plate 4 is arranged on one side of the left cover plate 1, two sets of support frames 6 are installed at the bottom ends of the left cover plate 1 and the right cover plate 4, a slide bar 14 is installed inside the support frame 6, a slide bar 15 is mounted on the surface of the slide bar 14, and the slide bar 15 is slidably connected to the slide bar 14, a first spring 16 is mounted on the surface of the slide bar 14 on one side of the slide bar 15, and the first spring 16 is connected to the slide bar 15, a left bearing block 24 is installed at the bottom end of the slide bar 15, a connecting arm 18 is installed inside the left bearing block 24, and the connecting arm 1 8 The end close to the left bearing block 24 is installed with a linkage shaft 17, and the connecting arm 18 is movably connected to the left bearing block 24 through the linkage shaft 17, the bottom end of the support frame 6 is installed with a right bearing block 25, the inside of the right bearing block 25 is installed with a rotating arm 12, the end of the rotating arm 12 close to the right bearing block 25 is installed with a movable shaft 13, and the rotating arm 12 is movably connected to the right bearing block 25 through the movable shaft 13, the end of the connecting arm 18 close to the rotating arm 12 is installed with a hinge shaft 19, and the connecting arm 18 is movably connected to the rotating arm 12 through the hinge shaft 19, and the bottom end of the rotating arm 12 is movably installed with a supporting rubber block 11;

[0024] First, squeeze the left cover plate 1 and the right cover plate 4, and the left cover plate 1 and the right cover plate 4 respectively drive the left comb-shaped teeth 2 and the right comb-shaped teeth 3 to move, and the left comb-shaped teeth 2 drive the inner T-shaped strip 7 to slide inside the inner T-shaped groove 8, so that the left cover plate 1 and the right cover plate 4 are close to each other, and at the same time, the left cover plate 1 drives the connecting rod 21 to slide inside the spring box 5 through the connecting block 23, and the connecting rod 21 drives the limiting ring 26 and the moving rod 22 to move, and the limiting ring 26 squeezes the second spring 20 to shrink the second spring 20, and then the left cover plate 1 and the right cover plate 4 are closed. The plate 4 is placed at the groove position of the trench. After placement, the left cover plate 1 and the right cover plate 4 are released, the second spring 20 stops contracting, and the second spring 20 drives the limit ring 26, the connecting rod 21 and the connecting block 23 to rebound, and the connecting block 23 drives the left cover plate 1 away from the right cover plate 4, so that the left cover plate 1 and the right cover plate 4 are respectively in contact with the inner walls on both sides of the trench to complete the laying of the cover plate. Under the elastic action of the second spring 20, it can be adapted to trenches of different widths. Multiple groups of inner T-shaped strips 7 and inner T-shaped grooves 8 can be used for the left comb teeth 2 The right comb-shaped teeth 3 provide sliding limit support and increase the structural strength. After the cover is laid, the supporting rubber block 11 contacts the bottom of the trench. If a vehicle passes over the left cover 1 and the right cover 4, the left cover 1 and the right cover 4 are pressed downward, and the left cover 1 and the right cover 4 drive the supporting frame 6 to move downward, and the supporting frame 6 drives the right bearing block 25 to move, and the right bearing block 25 drives the rotating arm 12 to rotate through the movable shaft 13, and the rotating arm 12 drives the connecting arm 18 to rotate through the hinge shaft 19, and the connecting arm 1 8 The left bearing block 24 is driven to move by the linkage shaft 17, and the left bearing block 24 drives the slider 15 to slide on the surface of the slide rod 14, and the slider 15 squeezes the first spring 16. Under the elastic support of the first spring 16, the first spring 16 offsets its pressure to prevent the external pressure from damaging the cover plate, thereby protecting the cover plate, realizing convenient elastic pulling to adapt to trenches of different widths, facilitating elastic offset of the pressure on the cover plate, reducing the pressure on the cover plate, and extending the service life of the cover plate;

[0025] A plurality of groups of left comb-shaped teeth 2 with equal spacing are installed on the side wall of the left cover plate 1, and the left comb-shaped teeth 2 are fixedly connected to the left cover plate 1;

[0026] A plurality of groups of right comb-shaped teeth 3 with equal spacing are installed on the side wall of the right cover plate 4, and the right comb-shaped teeth 3 are fixedly connected to the right cover plate 4, an inner T-shaped strip 7 is installed on the side wall of the left comb-shaped teeth 2, and an inner T-shaped slot 8 is installed on the side wall of the right comb-shaped teeth 3, and the inner T-shaped strip 7 is slidably connected to the inner T-shaped slot 8;

[0027] One side of the left cover plate 1 and the right cover plate 4 is installed with an external T-shaped strip 9, and the other side of the left cover plate 1 and the right cover plate 4 is installed with an external T-shaped slot 10;

[0028] The bottom end of the right comb-shaped teeth 3 is equipped with a spring box 5, and a connecting rod 21 is slidably installed inside the spring box 5. A limit ring 26 is installed at one end of the connecting rod 21, and a moving rod 22 is installed at one end of the limit ring 26. The surface of the moving rod 22 is covered with a second spring 20, and the second spring 20 is connected to the spring box 5;

[0029] The other end of the connecting rod 21 is equipped with a connecting block 23, and the connecting block 23 is connected to the left cover plate 1;

[0030] During the laying process of the cover plates, a single group of cover plates are usually laid in sequence. After long-term use, they will become loose and make noise after being rolled over by vehicles. An outer T-bar 9 is provided on one side of the cover plate, and an outer T-slot 10 is provided on the other side. At this time, the outer T-bar 9 can be inserted into the inner part of the outer T-slot 10 to complete the connection between the two groups of cover plates. When multiple groups of cover plates are connected, the structural strength is increased to prevent them from becoming loose, thereby reducing the noise generated by the rolling over of vehicles due to loose cover plates, realizing convenient combined installation of multiple groups of cover plates, reducing the noise generated by vehicles rolling over the cover plates, and improving the flexibility of installation and use.

[0031] Working principle: first squeeze the left cover plate 1 and the right cover plate 4, and the left cover plate 1 and the right cover plate 4 respectively drive the left comb-shaped teeth 2 and the right comb-shaped teeth 3 to move, and the left comb-shaped teeth 2 drive the inner T-shaped strip 7 to slide inside the inner T-shaped groove 8, so that the left cover plate 1 and the right cover plate 4 are close to each other, and at the same time, the left cover plate 1 drives the connecting rod 21 to slide inside the spring box 5 through the connecting block 23, and the connecting rod 21 drives the limiting ring 26 and the moving rod 22 to move, and the limiting ring 26 squeezes the second spring 20, and then the left cover plate 1 and the right cover plate 4 are placed in the groove position. After placement, loosen the left cover plate 1 and the right cover plate 4, and the second spring 20 is squeezed by the limiting ring 26. The second spring 20 stops contracting, and the second spring 20 drives the limiting ring 26, the connecting rod 21 and the connecting block 23 to rebound, and the connecting block 23 drives the left cover plate 1 away from the right cover plate 4, so that the left cover plate 1 and the right cover plate 4 are respectively in contact with the inner walls on both sides of the trench to complete the laying of the cover plate. Under the elastic action of the second spring 20, it can be adapted to trenches of different widths. Multiple groups of inner T-shaped strips 7 and inner T-shaped grooves 8 can provide sliding limiting support for the left comb-shaped teeth 2 and the right comb-shaped teeth 3, and at the same time increase the structural strength. After the cover plates are laid, the supporting rubber block 11 contacts the bottom of the trench. If the left cover plate 1 and the right cover plate are When a vehicle passes by, the left cover plate 1 and the right cover plate 4 are pressed to move downward, and the left cover plate 1 and the right cover plate 4 drive the support frame 6 to move downward, and the support frame 6 drives the right bearing block 25 to move, and the right bearing block 25 drives the rotating arm 12 to rotate through the movable shaft 13, and the rotating arm 12 drives the connecting arm 18 to rotate through the hinge shaft 19, and the connecting arm 18 drives the left bearing block 24 to move through the linkage shaft 17, and the left bearing block 24 drives the slider 15 to slide on the surface of the slide rod 14, and the slider 15 squeezes the first spring 16, and the first spring 16 offsets its pressure to prevent external pressure from affecting the sliding block 15. The cover plate is damaged, so the cover plate is used for protection. During the laying process of the cover plate, a single group of cover plates are usually laid in sequence. After long-term use, it will become loose, and noise will be emitted after being rolled over by vehicles. An outer T-bar 9 is provided on one side of the cover plate, and an outer T-slot 10 is provided on the other side. At this time, the outer T-bar 9 can be inserted into the outer T-slot 10 to complete the connection between the two groups of cover plates. When multiple groups of cover plates are connected, the structural strength is increased to prevent them from becoming loose, thereby reducing the noise generated by the loose cover plate and the rolling of the vehicle, so as to complete the use of the retractable perforated cover plate.

Claims

1. A retractable cover plate with holes, comprising a left cover plate (1) and a right cover plate (4), characterized in that: A right cover plate (4) is arranged on one side of the left cover plate (1), and two groups of support frames (6) are installed at the bottom ends of the left cover plate (1) and the right cover plate (4), and a slide bar (14) is installed inside the support frame (6), and a slider (15) is mounted on the surface of the slide bar (14), and the slider (15) is slidably connected to the slide bar (14), and a first spring (16) is mounted on the surface of the slide bar (14) on one side of the slider (15), and the first spring (16) is connected to the slider (15), and a left bearing block (24) is installed at the bottom end of the slider (15), and a connecting arm (18) is installed inside the left bearing block (24), and one end of the connecting arm (18) close to the left bearing block (24) is installed A linkage shaft (17) is provided, and a connecting arm (18) is movably connected to a left bearing block (24) through the linkage shaft (17); a right bearing block (25) is installed at the bottom end of the support frame (6); a rotating arm (12) is installed inside the right bearing block (25); a movable shaft (13) is installed at one end of the rotating arm (12) close to the right bearing block (25); and the rotating arm (12) is movably connected to the right bearing block (25) through the movable shaft (13); a hinge shaft (19) is installed at one end of the connecting arm (18) close to the rotating arm (12); and the connecting arm (18) is movably connected to the rotating arm (12) through the hinge shaft (19); and a supporting rubber block (11) is movably installed at the bottom end of the rotating arm (12).

2. A retractable perforated cover according to claim 1, characterized in that: A plurality of groups of left comb-shaped teeth (2) with equal spacing are installed on the side wall of the left cover plate (1), and the left comb-shaped teeth (2) are fixedly connected to the left cover plate (1).

3. The retractable perforated cover plate according to claim 1, characterized in that: A plurality of groups of right comb-shaped teeth (3) with equal spacing are installed on the side wall of the right cover plate (4), and the right comb-shaped teeth (3) are fixedly connected to the right cover plate (4).

4. The retractable perforated cover plate according to claim 2, characterized in that: The side walls of the left comb-shaped teeth (2) are all equipped with inner T-shaped strips (7), and the side walls of the right comb-shaped teeth (3) are all equipped with inner T-shaped grooves (8), and the inner T-shaped strips (7) are slidably connected to the inner T-shaped grooves (8).

5. The retractable perforated cover plate according to claim 1, characterized in that: One side of the left cover plate (1) and the right cover plate (4) is installed with an external T-shaped strip (9), and the other side of the left cover plate (1) and the right cover plate (4) is installed with an external T-shaped groove (10).

6. The retractable perforated cover plate according to claim 3, characterized in that: The bottom ends of the right comb-shaped teeth (3) are all equipped with spring boxes (5), and the interiors of the spring boxes (5) are all slidably equipped with connecting rods (21).

7. The retractable perforated cover plate according to claim 6, characterized in that: A limiting ring (26) is installed at one end of the connecting rod (21), a moving rod (22) is installed at one end of the limiting ring (26), a second spring (20) is mounted on the surface of the moving rod (22), and the second spring (20) is connected to the spring box (5).

8. The retractable perforated cover plate according to claim 6, characterized in that: The other end of the connecting rod (21) is equipped with a connecting block (23), and the connecting block (23) is connected to the left cover plate (1).

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