Load-bearing type automatic telescopic pit protection cover plate

Abstract

The utility model relates to the technical field of pit protection cover plates, in particular to a load-bearing type automatic telescopic pit protection cover plate which comprises a supporting bottom plate, a connecting block is fixedly connected to the supporting bottom plate, a supporting frame is fixedly connected to the supporting bottom plate, a spring torsion shaft is rotationally connected to the supporting frame, and the spring torsion shaft is fixedly connected to the supporting bottom plate. The supporting frame is fixedly connected with two sets of fixing supporting rods, and the two sets of fixing supporting rods are located at the two ends of the supporting frame correspondingly. According to the utility model, the spring torsion shaft is rotatably connected to the supporting frame, and the cover plate section bar is fixedly connected to the spring torsion shaft, so that automatic recovery of the cover plate section bar, the position setting of the protective curtain orientation carrier roller and the horizontal height of the guide rail can be realized under the action of the spring torsion shaft, and the horizontal operation of the pit cover plate and the guide rail is ensured; and the device has an automatic recovery function, is more convenient for workers to use, and is improved in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of pit protection cover plates, in particular to a load-bearing automatic telescopic pit protection cover plate. Background Art

[0002] The pit protection cover is a protective product used for pits or trenches. Its main purpose is to protect personnel safety, prevent debris from entering the pit, and facilitate inspection and maintenance. At present, in response to domestic production safety requirements, factories must eliminate safety hazards and prevent all work-related injuries such as falls. Now, general factories have two protective measures for pits: one is to add barriers to prevent people from entering, and the other is to cover the pit with steel plates as a whole. In short, the pit protection cover is an indispensable safety facility in the construction site. Choosing suitable materials and designing a reasonable pit protection cover is of great significance to ensuring personnel safety and improving maintenance efficiency.

[0003] The current pit protection cover still has the following defects when in use: the current protection cover causes inconvenience to production when in use, affects the overall appearance and production progress, has insufficient load-bearing capacity, and it is easy to get into danger if workers accidentally step on it, the size cannot be adjusted at will, and it is not suitable for pits of different sizes. The scope of use is small, and there is no automatic recovery function. When in use, the operation is cumbersome, which increases the burden on the staff. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a load-bearing automatic telescopic pit protection cover.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a load-bearing automatic retractable pit protection cover, including a supporting base plate, the supporting base plate is fixedly connected with a connecting block, the supporting base plate is fixedly connected with a supporting frame, the supporting frame is rotatably connected with a spring torsion shaft, the supporting frame is fixedly connected with a fixed support rod, the fixed support rod is provided with two groups and respectively located at two ends of the supporting frame, and the supporting frame is rotatably connected with a protective curtain directional roller.

[0006] As a further description of the above technical solution:

[0007] A cover plate profile is fixedly connected to the spring torsion shaft, and profile fixing ribs are fixedly connected to both ends of the cover plate profile. The profile fixing ribs are provided with several groups, wherein the two ends of each group of profile fixing ribs fit together, and high-strength screws are rotatably connected to the profile fixing ribs, one end of the high-strength screws is threadedly connected to both sides of the cover plate profile, and a clamping ring and a clamping ring are provided on the cover plate profile.

[0008] As a further description of the above technical solution:

[0009] One end of the connection block is fixedly connected to the support frame, and the connection block is provided with four groups. The material of the profile fixed rib is stainless steel hard metal material.

[0010] As a further description of the above technical solution:

[0011] The support frames are provided with two groups, the spring torsion shaft is rotatably connected in the middle of the two groups of support frames, and the spring torsion shaft is cylindrical in shape.

[0012] As a further description of the above technical solution:

[0013] The fixed support rod is located in the middle of the two groups of support frames, the fixed support rod is located below the spring torsion shaft, the shape of the clamping ring is circular, and the shape of the clamping ring is an open circle.

[0014] As a further description of the above technical solution:

[0015] The cover plate profile is provided with several groups, the bottom end of the cover plate profile is attached to the protective curtain directional roller, the clamping ring is rotatably connected in the clamping ring, the cover plate profile is located in the middle of two groups of support frames, and the material of the cover plate profile is aluminum alloy.

[0016] As a further description of the above technical solution:

[0017] The protective curtain directional roller is located in the middle of the two groups of support frames and above the spring torsion shaft.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, a spring torsion shaft is rotatably connected to the support frame, and a cover plate profile is fixedly connected to the spring torsion shaft. The cover plate profile can be automatically recovered by the action of the spring torsion shaft. The position setting of the directional roller of the protective curtain is at the same level as the guide rail to ensure that the pit cover and the guide rail run horizontally, prevent obstruction during stretching and recovery, and ensure smooth operation. This device has an automatic recovery function, which is more convenient for staff to use and increases the practicality of the device.

[0020] 2. In the utility model, the protective cover plate is composed of cover plate profiles that are infinitely connected in series one by one. The length and width can be customized according to actual conditions, which greatly increases the application range of the equipment and is suitable for pits of different sizes. At the same time, the profile fixing ribs are connected to the cover plate profiles with high-strength screws, so that the cover plate profiles form an integral protective cover plate, forming a strong pulling force, reducing the tensile stress of the cover plate profiles, and improving the service life of the protective cover plate. In addition, when the width of the device is 1500mm, the load-bearing capacity can reach 200kg per square meter, which reduces the possibility of danger during construction and greatly increases construction safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a load-bearing automatic telescopic pit protection cover proposed by the utility model Figure 1 ;

[0022] Figure 2 This is a structural left view of a load-bearing automatic telescopic pit protection cover proposed by the utility model;

[0023] Figure 3 This is a structural top view of a load-bearing automatic telescopic pit protection cover proposed by the utility model;

[0024] Figure 4 This is a structural side view of a load-bearing automatic telescopic pit protection cover proposed by the utility model;

[0025] Figure 5 for Figure 1 The enlarged view of point A in the middle;

[0026] Figure 6 A schematic diagram of the partial structure of a load-bearing automatic retractable pit protection cover proposed by the utility model Figure 1 ;

[0027] Figure 7 A schematic diagram of the partial structure of a load-bearing automatic retractable pit protection cover proposed by the utility model Figure 2 .

[0028] Legend:

[0029] 1. Support base plate; 2. Connecting block; 3. Support frame; 4. Spring torsion shaft; 5. Fixed support rod; 6. Directional roller of protective curtain; 7. Cover plate profile; 8. Profile fixing rib; 9. High-strength screws; 10. Snap ring; 11. Snap ring. DETAILED DESCRIPTION

[0030] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. 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.

[0031] Reference Figure 1-Figure 7The utility model provides an embodiment: a load-bearing automatic telescopic pit protection cover, comprising a supporting base plate 1, a connecting block 2 is fixedly connected to the supporting base plate 1, a supporting frame 3 is fixedly connected to the supporting base plate 1, a spring torsion shaft 4 is rotatably connected to the supporting frame 3, a fixed support rod 5 is fixedly connected to the supporting frame 3, and the fixed support rod 5 is provided with two groups and is respectively located at the two ends of the supporting frame 3, a protective curtain directional roller 6 is rotatably connected to the supporting frame 3, a spring torsion shaft 4 is rotatably connected to the supporting frame 3, a cover plate profile 7 is fixedly connected to the spring torsion shaft 4, and the cover plate profile 7 can be automatically recovered by the action of the spring torsion shaft 4, and the position setting of the protective curtain directional roller 6 is at the same level as the guide rail to ensure that the pit cover and the guide rail run horizontally, prevent blocking during the stretching and recovery process, and ensure its smooth operation. This device has an automatic recovery function, which is more convenient for the staff to use and increases the practicality of the device.

[0032] Among them, a cover plate profile 7 is fixedly connected to the spring torsion shaft 4, and profile fixing ribs 8 are fixedly connected at both ends of the cover plate profile 7. The profile fixing ribs 8 are provided with several groups, and the two ends of each group of profile fixing ribs 8 are fitted with each other. A high-strength screw 9 is rotatably connected to the profile fixing rib 8, and one end of the high-strength screw 9 is threadedly connected to the two sides of the cover plate profile 7. A clamping ring 10 and a clamping ring 11 are provided on the cover plate profile 7. One end of the connecting block 2 is fixedly connected to the supporting frame 3, and the connecting block 2 is provided with four groups. The material of the profile fixing rib 8 is stainless steel hard metal material. The supporting frame 3 is provided with two groups. The spring torsion shaft 4 is rotatably connected to the middle of the two groups of supporting frames 3. The shape of the spring torsion shaft 4 is cylindrical. The fixed support rod 5 is located in the middle of the two groups of supporting frames 3. The fixed support rod 5 is located below the spring torsion shaft 4. The shape of the clamping ring 11 is circular, and the shape of the clamping ring 10 is an open circular. The cover plate profile 7 is provided with There are several groups, the bottom end of the cover plate profile 7 is fitted on the protective curtain directional roller 6, the clamping ring 11 is rotatably connected in the clamping ring 10, the cover plate profile 7 is located in the middle of the two groups of support frames 3, the cover plate profile 7 is made of aluminum alloy, the protective curtain directional roller 6 is located in the middle of the two groups of support frames 3 and is located above the spring torsion shaft 4, the protective cover is composed of cover plate profiles 7 that are infinitely connected in series one by one, and the length and width can be customized according to actual conditions, which greatly increases the application range of the equipment and is suitable for pits of different sizes. At the same time, the profile fixing rib 8 is connected to the cover plate profile 7 with high-strength screws 9, so that the cover plate profile 7 forms an integral protective cover, forming a strong pulling force, reducing the tensile force of the cover plate profile 7, and improving the service life of the protective cover. When the width of the device is 1500mm, the load-bearing capacity can reach 200kg per square meter, which reduces the possibility of danger during construction and greatly increases construction safety.

[0033] Working principle: Before the device is used, the staff will first move the two sets of equipment to the construction site with a pit, install guide rails on both sides of the pit, fix the front end of the cover profile 7 on the running machine, and pull the cover to move with the mechanical equipment in parallel, so that the cover profile 7 slides above the protective curtain directional roller 6. Tracks are provided on both sides of the upper end of the pit to play a supporting role to ensure the load-bearing capacity of the automatically retractable pit cover. Then the machine stretches the cover profile 7 until it completely covers the pit and then stops. The protective curtain directional roller 6 is at the horizontal height of the guide rail to ensure that the cover profile 7 and the guide rail run horizontally, prevent obstruction during stretching and recovery, and ensure smooth operation. The protective cover is composed of cover profiles 7 that are infinitely connected in series one by one. The two cover plate profiles 7 are connected by a stainless steel hard metal profile fixing rib 8 and a high-strength screw 9, so that the cover plate profile 7 forms an integral protective cover plate, forms a strong pulling force, reduces the tensile stress of the cover plate profile 7, and increases the service life of the protective cover plate. After use, the mechanical equipment and one end of the cover plate profile 7 are loosened, and under the action of the spring torsion shaft 4, the cover plate profile 7 slides on the protective curtain directional roller 6, and the cover plate profile 7 is slowly rolled into the spring torsion shaft 4, realizing the function of automatic recovery. This device is easy to use, made of stainless steel hard metal material, and connected by high-strength screws 9, which is not easy to be damaged, has a large bearing capacity, and is safe to use, so that the staff can work safely and confidently on the device.

[0034] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A load-bearing automatic retractable pit protection cover, comprising a supporting bottom plate (1), characterized in that: The support base plate (1) is fixedly connected to a connection block (2), the support base plate (1) is fixedly connected to a support frame (3), the support frame (3) is rotatably connected to a spring torsion shaft (4), the support frame (3) is fixedly connected to a fixed support rod (5), the fixed support rod (5) is provided with two groups and is respectively located at two ends of the support frame (3), and the support frame (3) is rotatably connected to a protective curtain directional roller (6).

2. The load-bearing automatic retractable pit protection cover according to claim 1, characterized in that: A cover plate profile (7) is fixedly connected to the spring torsion shaft (4), and profile fixing ribs (8) are fixedly connected to both ends of the cover plate profile (7). The profile fixing ribs (8) are provided with a plurality of groups, wherein the two ends of each group of the profile fixing ribs (8) are fitted together, and a high-strength screw (9) is rotatably connected to the profile fixing rib (8), and one end of the high-strength screw (9) is threadedly connected to both sides of the cover plate profile (7), and a clamping ring (10) and a clamping ring (11) are provided on the cover plate profile (7).

3. The load-bearing automatic retractable pit protection cover according to claim 2, characterized in that: One end of the connection block (2) is fixedly connected to the support frame (3), and the connection block (2) is provided with four groups. The material of the profile fixed rib (8) is stainless steel hard metal material.

4. The load-bearing automatic retractable pit protection cover according to claim 3, characterized in that: The support frames (3) are provided with two groups, and the spring torsion shaft (4) is rotatably connected in the middle of the two groups of support frames (3), and the spring torsion shaft (4) is cylindrical in shape.

5. The load-bearing automatic retractable pit protection cover according to claim 4, characterized in that: The fixed support rod (5) is located in the middle of the two groups of support frames (3), the fixed support rod (5) is located below the spring torsion shaft (4), the shape of the clamping ring (11) is circular, and the shape of the clamping ring (10) is an open circle.

6. The load-bearing automatic retractable pit protection cover according to claim 5, characterized in that: The cover plate profile (7) is provided with a plurality of groups, the bottom end of the cover plate profile (7) is attached to the protective curtain directional roller (6), the clamping ring (11) is rotatably connected in the clamping ring (10), the cover plate profile (7) is located in the middle of the two groups of support frames (3), and the material of the cover plate profile (7) is aluminum alloy.

7. The load-bearing automatic retractable pit protection cover according to claim 6, characterized in that: The protective curtain directional roller (6) is located in the middle of the two groups of support frames (3) and above the spring torsion shaft (4).

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