Embedded hydraulically driven movable cover for indoor trench access holes

Abstract

This utility model discloses an embedded hydraulically driven movable cover for indoor trench inspection holes, relating to the field of industrial and civil building facility maintenance technology. The utility model includes a frame, with a cover body hinged to the front of the frame via a hinge. A hydraulic cylinder is movably connected to the inner side of the frame, and a pin is fixedly connected to the telescopic end of the hydraulic cylinder. A mounting base is fixedly connected to one side of the cover body. The frame has a stepped design. This utility model requires only a small triggering force to open the cover, and the lifting time of the cover body is short, making operation simple and quick, greatly improving work efficiency. It also reduces the operational difficulty and labor intensity for workers. When the cover body is closed, the height difference with the ground is small, eliminating the risk of collision. This ensures that the cover is on the same plane as the ground when closed, facilitating the passage of AGVs. High-strength cold-rolled steel plate improves the load-bearing capacity and durability of the cover, reducing the frequency of cover replacement and lowering maintenance costs.

Description

Technical Field

[0001] This utility model belongs to the field of industrial and civil building facility maintenance technology, and in particular relates to an embedded hydraulically driven movable cover plate for indoor trench inspection holes. Background Technology

[0002] In modern industrial buildings, access panels for indoor trenches are widely used. However, existing access panel covers have several technical defects: traditional covers are mostly made of cast iron, patterned steel plates, or concrete, all of which have uneven surfaces. When AGVs (Automated Guided Vehicles) travel over the trench, the unevenness of the cover surface causes increased vibration. This vibration not only affects the positioning accuracy of the AGVs but also shortens their lifespan over time.

[0003] Furthermore, existing trench inspection hole covers have the following technical defects and insufficient functionality: Traditional covers are mostly made of cast iron, patterned steel plates, or concrete, with uneven surfaces, which leads to increased vibration when AGVs pass through, affecting equipment positioning accuracy and lifespan; Inefficient operation: Covers need to be pried or moved manually (each opening and closing takes ≥30 seconds), and are heavy (for example, a 750mm×500mm concrete cover weighs ≥50kg), which can easily cause personnel fatigue and damage to the edges of the cover, resulting in reduced sealing performance; Safety hazards: There is a height difference of ≥5mm between the cover and the ground, creating a tripping risk, and it is prone to deformation after long-term use, exacerbating safety hazards; High maintenance costs: Frequent manual operation leads to wear and tear on the cover and surrounding ground, increasing annual maintenance costs.

[0004] To address these issues, we have provided an embedded hydraulically driven movable cover for indoor trench access holes. Utility Model Content

[0005] The purpose of this utility model is to provide an embedded hydraulically driven movable cover for indoor trench inspection holes. Through the cooperation of hydraulic cylinder and sealing strip, it solves the problems of inconvenient operation and poor sealing performance of movable covers in the prior art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model is an embedded hydraulically driven movable cover for an indoor trench inspection hole, including a frame. The cover body is hinged to the front of the frame via a hinge. A hydraulic cylinder is movably connected to the inner side of the frame. A pin is fixedly connected to the telescopic end of the hydraulic cylinder. A mounting base is fixedly connected to one side of the cover body. The frame has a stepped design, and a sealing strip is provided on the inner side of the frame.

[0008] The present invention is further configured such that the cover plate body is made of 10 mm thick high-strength cold-rolled steel plate, the edges of the cover plate body are rounded and chamfered, and a through groove is provided on the front side of the cover plate body.

[0009] The present invention is further configured such that the frame is formed by laser welding of steel bars with a cross-section of 20 mm by 40 mm.

[0010] The present invention is further configured such that the telescopic end of the hydraulic cylinder is movably connected to the inner side of the mounting base via the pin, and the fixed end of the hydraulic cylinder is movably connected to the inner side of the frame via a movable sleeve and a fixed rod.

[0011] The present invention is further configured such that there are two hydraulic cylinders, and each hydraulic cylinder integrates an accumulator and an emergency manual release valve.

[0012] The present invention is further configured such that the sealing strip includes an upper end face, a lower end face, and a spring. The upper end face and the inner side of the lower end face are fixedly connected by the spring. An arc-shaped strip is fixedly connected between the upper end face and the lower end face. When the cover plate body is closed, the cover plate body presses down on the upper end face of the sealing strip, compresses the spring to make the lower end face fit against the frame, and at the same time the arc-shaped strip is squeezed and expands to both sides to fill the gap.

[0013] The present invention is further configured such that the upper end face and the lower end face are made of hard rubber, and the arc-shaped strip is made of elastic rubber material.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model requires only a small triggering force to open the cover, and the lifting time of the cover body is short. The operation is simple and quick, which greatly improves work efficiency and reduces the difficulty and labor intensity of the operators. When the cover body is closed, the height difference with the ground is small, eliminating the risk of collision. This ensures that the cover is on the same plane as the ground when closed, which is conducive to the passage of AGVs. The high-strength cold-rolled steel plate improves the load-bearing capacity and durability of the cover, reduces the frequency of cover replacement, and lowers maintenance costs.

[0016] 2. When the cover plate body of this utility model is closed, the compression spring causes the upper end of the sealing strip to approach the lower end, thereby compressing the arc strip to move to both sides, sealing the joint between the arc strip and the frame, ensuring the sealing effect. The spring provides a rebound force to the upper end of the sealing strip, ensuring the sealing effect of the sealing strip under multiple closing conditions.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 A perspective view of an embedded hydraulically driven movable cover plate for an indoor trench inspection hole.

[0020] Figure 2 Diagram showing the closed state of an embedded hydraulically driven movable cover for an indoor trench inspection hole.

[0021] Figure 3 A three-dimensional view of the sealing strip in the embedded hydraulically driven movable cover plate for the inspection hole of the indoor trench.

[0022] Figure 4 A cross-sectional view of the sealing strip in the embedded hydraulically driven movable cover plate for the inspection hole of the indoor trench.

[0023] In the attached diagram: 1. Frame; 2. Cover plate body; 3. Hydraulic cylinder; 4. Pin; 5. Mounting base; 6. Sealing strip; 61. Upper end face; 62. Lower end face; 63. Spring; 64. Arc strip; 7. Through groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Example 1

[0026] Please see Figures 1-4 This utility model is an embedded hydraulically driven movable cover for an indoor trench inspection hole, including a frame 1. The front of the frame 1 is hinged to the cover body 2. A hydraulic cylinder 3 is movably connected to the inner side of the frame 1. A pin 4 is fixedly connected to the telescopic end of the hydraulic cylinder 3. A mounting seat 5 is fixedly connected to one side of the cover body 2. The frame 1 has a stepped design. A sealing strip 6 is provided on the inner side of the frame 1. The cover body 2 is made of 10 mm thick high-strength cold-rolled steel plate. The edges of the cover body 2 are rounded and chamfered. A through groove 7 is opened on the front of the cover body 2. The frame 1 is formed by laser welding of steel bars with a cross section of 20 mm x 40 mm.

[0027] Further details: The cover plate body 2 is precision machined by CNC machine tools to ensure surface roughness. This processing technology ensures the flatness and smoothness of the cover plate surface, making it more stable and reliable during use. The rounded corners prevent workers from being scratched by sharp edges during operation and also help improve the overall aesthetics of the cover plate. The cover plate and frame 1 adopt a transition fit to ensure that the height difference between the cover plate and the ground is small when the cover plate is closed, so that the cover plate is on the same plane as the ground when closed. This is not only conducive to the passage of AGVs, but also improves the overall aesthetics. High-strength cold-rolled steel plate improves the load-bearing capacity and durability of the cover plate, reduces the frequency of cover plate replacement, and lowers maintenance costs. The frame 1 is formed by laser welding. Laser welding has the advantages of high welding precision and good weld quality, which can ensure the structural strength of the frame 1. The weld is inspected by ultrasonic flaw detection, which can effectively detect possible defects inside the weld, ensuring the quality and safety of the frame 1.

[0028] Example 2

[0029] Please see Figures 1-4 Based on Example 1, the telescopic end of the hydraulic cylinder 3 is movably connected to the inner side of the mounting base 5 via a pin 4, and the fixed end of the hydraulic cylinder 3 is movably connected to the inner side of the frame 1 via a movable sleeve and a fixed rod. There are two hydraulic cylinders 3. The hydraulic cylinder 3 integrates an accumulator and an emergency manual release valve. The sealing strip 6 includes an upper end face 61, a lower end face 62 and a spring 63. The inner sides of the upper end face 61 and the lower end face 62 are fixedly connected by the spring 63. An arc-shaped strip 64 is fixedly connected between the upper end face 61 and the lower end face 62. The upper end face 61 and the lower end face 62 are made of hard rubber, and the arc-shaped strip 64 is made of elastic rubber.

[0030] Further details: Hydraulic cylinder 3 is driven by an external hydraulic drive system (existing technology). The dual hydraulic cylinder 3 design provides sufficient power to drive the opening and closing of the cover plate. It integrates an accumulator and an emergency manual release valve (both existing technologies, therefore not described in detail). The accumulator stores energy during normal system operation and releases it when needed to ensure stable system operation. The emergency manual release valve allows operators to manually release the cover plate in case of hydraulic system failure, ensuring timely response in emergencies. When operating the inspection hole of the trench, the hydraulic cylinder 3 is installed at an angle on both sides of the bottom of the cover plate body 2. The thrust is amplified by the lever principle, so that only a small triggering force is needed to lift the cover plate when it is opened. When the cover plate body 2 is closed, the spring 63 is compressed, which makes the upper end face 61 of the sealing strip 6 move closer to the lower end face 62, thereby compressing the arc strip 64 to move to both sides, sealing the joint between the cover plate body 2 and the frame 1, ensuring the sealing effect. The spring 63 provides a rebound force to the upper end face 61 of the sealing strip 6, ensuring the sealing effect of the sealing strip 6 under multiple closing conditions.

[0031] The working principle of this utility model is as follows: when it is necessary to open the cover, the hydraulic cylinder 3 is driven by the hydraulic drive system. Since the hydraulic cylinder 3 is installed at an angle, the thrust is amplified by the lever principle, so that the cover can start to be lifted with a small triggering force.

[0032] When the cover needs to be closed, the hydraulic cylinder 3 is driven by the hydraulic drive system, and the cover begins to descend. During the descent of the cover, the accumulator can store energy when the system is working normally and release energy when needed to ensure the stable operation of the system. At the same time, it can slow down the descent speed of the cover to avoid damage to the cover due to excessive impact. Moreover, when the cover is closed, the compression spring 63 causes the upper end face 61 of the sealing strip 6 to move closer to the lower end face 62, thereby compressing the arc strip 64 to move to both sides and sealing the mating part between the cover body 2 and the frame 1 to ensure the sealing effect. The spring 63 provides a rebound force to the upper end face 61 of the sealing strip 6, ensuring the sealing effect of the sealing strip 6 under multiple closing conditions.

[0033] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An embedded hydraulically driven movable cover for an indoor trench inspection hole, comprising a frame (1), characterized in that: The frame (1) is hinged to the cover plate body (2) on the front. A hydraulic cylinder (3) is movably connected to the inside of the frame (1). A pin (4) is fixedly connected to the telescopic end of the hydraulic cylinder (3). A mounting base (5) is fixedly connected to one side of the cover plate body (2). The frame (1) is a stepped design. A sealing strip (6) is provided on the inside of the frame (1).

2. The embedded hydraulically driven movable cover plate for indoor trench inspection holes according to claim 1, characterized in that: The cover plate body (2) is made of 10 mm thick high-strength cold-rolled steel plate. The edges of the cover plate body (2) are rounded and chamfered. A through groove (7) is provided on the front of the cover plate body (2).

3. The embedded hydraulically driven movable cover plate for indoor trench inspection holes according to claim 1, characterized in that: The frame (1) is formed by laser welding of steel bars with a cross-section of 20 mm by 40 mm.

4. The embedded hydraulically driven movable cover plate for indoor trench inspection holes according to claim 1, characterized in that: The telescopic end of the hydraulic cylinder (3) is movably connected to the inner side of the mounting base (5) through the pin (4), and the fixed end of the hydraulic cylinder (3) is movably connected to the inner side of the frame (1) through the movable sleeve and the fixed rod.

5. The embedded hydraulically driven movable cover plate for indoor trench inspection holes according to claim 1, characterized in that: The hydraulic cylinder (3) consists of two cylinders, each integrating an accumulator and an emergency manual release valve.

6. The embedded hydraulically driven movable cover plate for indoor trench inspection holes according to claim 1, characterized in that: The sealing strip (6) includes an upper end face (61), a lower end face (62) and a spring (63). The upper end face (61) and the inner side of the lower end face (62) are fixedly connected by the spring (63). An arc-shaped strip (64) is fixedly connected between the upper end face (61) and the lower end face (62).

7. The embedded hydraulically driven movable cover plate for indoor trench inspection holes according to claim 6, characterized in that: The upper end face (61) and the lower end face (62) are made of hard rubber, and the arc-shaped strip (64) is made of elastic rubber.

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