Bottom shaft driving hydraulic gate

Abstract

A bottom shaft driving hydraulic gate comprises a gate plate and a bottom shaft arranged at the lower end of the gate plate, the gate plate is rotationally arranged on a foundation supporting structure on the ground through the bottom shaft, the lower end of the gate plate or the bottom shaft is connected with a swing arm used for driving the gate plate to rotate, and a hydraulic oil cylinder is arranged below the gate plate. The driving end of the hydraulic oil cylinder is connected with a driving block capable of horizontally sliding on a sliding supporting structure below the hydraulic oil cylinder, and the driving block can be in sliding contact with the swing arm extending downwards in the horizontal sliding process and pushes the swing arm to rotate the gate plate from a falling open state to a lifting closed state under the driving force of the hydraulic oil cylinder; the driving block can be separated from the swing arm after the gate plate descends to the open state or is blocked by an obstacle and stops descending, the acting force of continuous action of the hydraulic oil cylinder cannot be applied to the swing arm and the gate plate, and therefore equipment damage is avoided.

Description

Technical Field

[0001] This utility model relates to hydraulic gates, specifically a bottom shaft driven hydraulic gate. Background Technology

[0002] Hydraulic gates, also known as hydraulic dams, are widely used in agricultural irrigation, seawater tide control, and urban river landscaping. Hydraulic gates are classified into different types based on their opening and closing drive mechanism. One type, bottom-shaft drive, uses a horizontal bottom shaft to rotate the gate, thus adjusting its opening. In this drive structure, a swing arm is fixed to the bottom shaft, and the swing arm is connected to a working cylinder to drive the gate's rotation. This structure has several problems. First, after the gate rotates and rises to its designated position, a locking mechanism is needed to lock the hydraulic cylinder or swing arm to keep the gate at the predetermined position and block water flow. This requires an additional unlocking cylinder to release the lock when the gate needs to be lowered, leading to a complex mechanism and increased costs. Second, since the working cylinder is connected to the swing arm, during the gate's rotation and descent controlled by the working cylinder, obstacles such as river debris may prevent the gate from descending, while the working cylinder continues to drive the swing arm, potentially damaging the equipment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defect of the gate equipment in the prior art that is easily damaged when encountering obstacles such as river garbage, and to provide a bottom shaft driven hydraulic gate.

[0004] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a bottom shaft driven hydraulic gate includes a gate plate and a bottom shaft disposed at the lower end of the gate plate. The gate plate is rotatably mounted on a foundation support structure on the ground via the bottom shaft. A swing arm for driving the gate plate to rotate is connected to the lower end of the gate plate or the bottom shaft. A hydraulic cylinder is disposed below the gate plate. The driving end of the hydraulic cylinder is connected to a driving block that can slide horizontally on a sliding support structure below it. During the horizontal sliding process, the driving block can slide into contact with the downwardly extending swing arm and push the swing arm under the driving force of the hydraulic cylinder to rotate the gate plate from the falling open state to the rising closed state. The driving block can disengage from the swing arm after the gate plate descends to the open state or stops descending due to obstruction by an obstacle.

[0005] When the gate plate rotates to the raised closed state, the drive block slides under the swing arm and can support the swing arm to limit the downward rotation of the swing arm and the gate plate.

[0006] The upper end of the drive block is provided with a support surface for supporting the swing arm. After the gate plate is raised to the closed state, the hydraulic cylinder can drive the drive block to continue sliding so that the lower end of the swing arm is supported on the support surface.

[0007] The lower end of the swing arm is provided with a roller that engages with the drive block.

[0008] The supporting surface is parallel to the sliding direction of the driving block.

[0009] The lower end of the swing arm is provided with a positioning surface. After the gate plate is raised to the closed state, the hydraulic cylinder can drive the drive block to continue sliding so that it is supported below the positioning surface.

[0010] The drive block is equipped with a drive wheel, and the drive block drives the swing arm through the drive wheel.

[0011] When the gate plate is raised to the closed state, the positioning surface is parallel to the sliding direction of the drive block.

[0012] The hydraulic cylinder and drive block are located in a closed drive chamber below the gate plate. The swing arm extends into the drive chamber, and its lower end is located on the moving path of the drive block.

[0013] The bottom shaft is inserted into the drive compartment, and a sealing structure is provided between the bottom shaft and the side wall of the drive compartment.

[0014] The beneficial effects of this invention are as follows: During the process of the hydraulic cylinder controlling the rotation of the swing arm through the drive block, the drive block and the swing arm are in sliding engagement and are not fixedly connected. When the gate plate encounters an obstacle and cannot continue to descend during its descent, the drive block, which continues to move under the drive of the hydraulic cylinder, can disengage from the swing arm. The force exerted by the hydraulic cylinder will not be applied to the swing arm and the gate plate, thus avoiding damage to the equipment.

[0015] Based on solving the aforementioned technical problems, by setting the relative position of the drive block and the swing arm, the drive block can slide under the swing arm when the gate plate rotates to the raised closed state. The drive block, sandwiched between the lower support structure and the swing arm, supports the swing arm and restricts its rotation, thus locking the gate plate position. This eliminates the need for separate locking mechanisms and unlocking cylinders, simplifying the equipment structure and reducing costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the gate plate in the closed state of Embodiment 1 of this utility model.

[0017] Figure 2 This is a structural schematic diagram of the gate plate in the open state of Embodiment 1 of this utility model.

[0018] Figure 3 This is a structural schematic diagram of Embodiment 2 of this utility model.

[0019] The markings in the diagram are: 1. Gate plate, 2. Bottom shaft, 3. Swing arm, 301. Roller, 302. Positioning surface, 4. Hydraulic cylinder, 5. Drive block, 501. Support surface, 502. Drive wheel, 6. Drive chamber, 7. Basic support structure, 8. Sliding support structure. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. The specific contents listed in the following embodiments are not limited to the technical features necessary to solve the technical problem described in the claims. Furthermore, the listed embodiments are merely a part of this utility model, and not all of them.

[0021] Figure 1 and 2 This is a schematic diagram of Embodiment 1 of the bottom-shaft driven hydraulic gate of this utility model. In this utility model, the bottom-shaft driven hydraulic gate includes a gate plate 1, a bottom shaft 2, and a hydraulic cylinder 4. The bottom shaft 2 is located at the lower end of the gate plate. The gate plate 1 is rotatably mounted on a foundation support structure 7 on the ground via the bottom shaft 2, such as on the foundation of a river dam or on a support member mounted on the foundation of the dam. The gate is opened and closed by controlling the rotation of the gate plate 1 around the axis of the bottom shaft 2. The gate plate 1 and the bottom shaft 2 can be fixedly connected. When the bottom shaft 2 rotates, the gate plate 1 rotates and rises or falls accordingly. In this structure, a swing arm 3 is connected to the lower end of the bottom shaft or the gate plate. The hydraulic cylinder 4 drives the swing arm 3 to drive the gate plate to rotate. The gate plate 1 and the bottom shaft 2 can also adopt a structure of relative rotation, with the bottom shaft 2 fixedly mounted and the lower end of the gate plate 1 rotatably connected to the bottom shaft 2. In this structure, the lower end of the gate plate 1 is connected to a swing arm 3. For example, swing arms are set on both sides of the lower end of the gate plate 1. The swing arm 3 is driven by the hydraulic cylinder 4 to drive the gate plate to rotate around the bottom shaft 2.

[0022] like Figure 1 and 2As shown, the hydraulic cylinder 4 is located below the gate plate 1, and the swing arm 3 extends downwards. One end of the hydraulic cylinder 4 is fixed, and the driving end of the other end is connected to a driving block 5. A sliding support structure 8 is provided below the driving block 5. This sliding support structure 8 can be a support plane that can support the driving block 5, or it can be a sliding track. The driving block 5 can be supported by the sliding support structure 8 and slide horizontally on it. It should be noted that the horizontal sliding described in this utility model is only sliding in a roughly horizontal direction, not a strictly horizontal plane. Slightly inclined structures are also included in this range. During the horizontal sliding process, the driving block 5 can slide into contact with the downwardly extending swing arm 3. Under the driving force of the hydraulic cylinder 4, the driving block 5 can push the swing arm 3 to deflect, thereby rotating the gate plate 1 from the lowered open state to the raised closed state. When the gate plate 1 needs to be lowered to open, the hydraulic cylinder 4 drives the driving block 5 to move in the opposite direction. Since the driving block 5 and the swing arm 3 are in sliding contact, they are not directly connected. During the descent of the gate plate, its descent power comes from the gravity of the gate plate and the water flow pressure. The force of the hydraulic cylinder is used to control the slow descent of the gate plate by blocking the rotation of the swing arm through the drive block. When the gate plate 1 descends to the open state or stops descending due to obstruction, the continuing drive block 5 can disengage from the swing arm 3. Therefore, even if the gate plate is obstructed and cannot descend further, the continued operation of the hydraulic cylinder will not cause damage to the equipment.

[0023] By setting the sliding position of the drive block 5 and the deflection angle of the swing arm 3, such as Figure 1 As shown, when the gate plate 1 is rotated to the raised closed state, the drive block 5 slides exactly below the swing arm 3. At this time, the drive block 5 can support the swing arm 3 to restrict its downward rotation, thereby restricting the gate plate from rotating downward and locking the position of the gate plate. This eliminates the need for the hydraulic cylinder to work for an extended period to maintain the position of the gate plate.

[0024] To facilitate the cooperation between the drive block 5 and the swing arm 3 to achieve position locking, such as Figure 1 and 2 As shown, a support surface 501 can be provided at the upper end of the drive block 5. After the gate plate 1 is raised to the closed state, the lower end of the swing arm 3 is approximately at the same height as the support surface 501. The hydraulic cylinder 4 can drive the drive block 5 to continue sliding so that the lower end of the swing arm 3 is supported on the support surface 501. By providing a support surface 501 of a certain length, it is beneficial to set the sliding stroke of the drive block 5, so that it can achieve the locking with the swing arm 3 without being particularly precise. On the other hand, it can prevent the swing arm 3 from slipping off, achieving stable support and locking. The support surface 501 is parallel to the sliding direction of the drive block 5. On the one hand, it is beneficial for the lower end of the swing arm 3 to slide and support itself on the support surface 501. On the other hand, the force applied by the lower end of the swing arm 3 to the support surface 501 will be applied vertically to the sliding support structure 8 below the drive block 5, preventing the drive block 5 from moving under the force of the swing arm 3. Figure 1 and 2 As shown, a roller 301 can be installed at the lower end of the swing arm 3 so that it can make contact with the drive block 5, which is beneficial to the sliding contact between the two.

[0025] Unlike Figure 2 The diagram shows a support surface 501 set on the upper end of the drive block 5. Figure 3 In the illustrated embodiment, a positioning surface 302 is provided at the lower end of the swing arm 3. After the gate plate 1 is raised to the closed state, the hydraulic cylinder 4 can drive the drive block 5 to continue sliding, supporting it below the positioning surface 302. Stable support is achieved by using the positioning surface of a certain length in conjunction with the drive block 5. To facilitate the sliding cooperation between the drive block 5 and the swing arm 3, a drive wheel 502 can be provided on the drive block 5, which drives the swing arm 3. In this embodiment, through structural design, when the gate plate 1 is raised to the closed state, the positioning surface 302 is parallel to the sliding direction of the drive block 5, ensuring that the force exerted by the swing arm 3 on the drive wheel 502 is perpendicular to the sliding support structure 8 below it.

[0026] like Figure 1 As shown in Figure 3, a closed drive chamber 6 is provided below the gate plate 1. The drive chamber 6 can be a cavity buried in the ground or a specially designed chamber. The hydraulic cylinder 4 and the drive block 5 are located in the drive chamber 6, which isolates them from external water, preventing the hydraulic cylinder 4 from being submerged in water for extended periods. The bottom shaft 2 extends into the drive chamber, and a sealing structure is provided between the bottom shaft and the side wall of the drive chamber. The swing arm 3 extends into the drive chamber, with its lower end located on the moving path of the drive block.

[0027] The above description of specific embodiments is only for the purpose of helping to understand the technical concept and core idea of ​​this utility model. Although specific preferred embodiments have been used to describe and illustrate the technical solution, they should not be construed as limiting the utility model itself. Those skilled in the art can make various changes in form and detail without departing from the technical concept of this utility model. These easily conceivable changes or substitutions should all be covered within the protection scope of this utility model.

Claims

1. A bottom-shaft driven hydraulic gate, comprising a gate plate (1) and a bottom shaft (2) disposed at the lower end of the gate plate, wherein the gate plate (1) is rotatably mounted on a foundation support structure (7) on the ground via the bottom shaft (2), and a swing arm (3) for driving the gate plate to rotate is connected to the lower end of the gate plate or the bottom shaft, characterized in that: A hydraulic cylinder (4) is provided below the gate plate (1). The driving end of the hydraulic cylinder is connected to a driving block (5) that can slide horizontally on the sliding support structure (8) below it. During the horizontal sliding process, the driving block (5) can slide into contact with the downwardly extending swing arm (3) and push the swing arm (3) under the driving force of the hydraulic cylinder (4) to rotate the gate plate (1) from the falling open state to the rising closed state. The driving block (5) can disengage from the swing arm (3) after the gate plate (1) descends to the open state or stops descending due to the obstruction of an obstacle.

2. The bottom-shaft driven hydraulic gate as described in claim 1, characterized in that: When the gate plate (1) rotates to the raised closed state, the drive block (5) slides below the swing arm (3) and can support the swing arm (3) to limit the downward rotation of the swing arm and the gate plate.

3. A bottom-shaft driven hydraulic gate as described in claim 1, characterized in that: The upper end of the drive block (5) is provided with a support surface (501) for supporting the swing arm (3). After the gate plate (1) is raised to the closed state, the hydraulic cylinder (4) can drive the drive block (5) to continue sliding so that the lower end of the swing arm (3) is supported on the support surface (501).

4. A bottom-shaft driven hydraulic gate as described in any one of claims 1-3, characterized in that: The lower end of the swing arm (3) is provided with a roller (301) that engages with the drive block (5).

5. A bottom-shaft driven hydraulic gate as described in claim 3, characterized in that: The supporting surface (501) is parallel to the sliding direction of the driving block (5).

6. A bottom-shaft driven hydraulic gate as described in claim 1, characterized in that: The lower end of the swing arm (3) is provided with a positioning surface (302). After the gate plate (1) is raised to the closed state, the hydraulic cylinder (4) can drive the drive block (5) to continue sliding so that it is supported below the positioning surface (302).

7. A bottom-shaft driven hydraulic gate as described in claim 6, characterized in that: The drive block (5) is provided with a drive wheel (502), and the drive block drives the swing arm (3) through the drive wheel.

8. A bottom-shaft driven hydraulic gate as described in claim 6, characterized in that: When the gate plate (1) is raised to the closed state, the positioning surface (302) is parallel to the sliding direction of the drive block (5).

9. A bottom-shaft driven hydraulic gate as described in claim 1, characterized in that: The hydraulic cylinder (4) and drive block (5) are located in the closed drive chamber (6) below the gate plate (1). The swing arm (3) extends into the drive chamber and its lower end is located on the moving path of the drive block.

10. A bottom-shaft driven hydraulic gate as described in claim 9, characterized in that: The bottom shaft (2) is inserted into the drive compartment, and a sealing structure is provided between the bottom shaft and the side wall of the drive compartment.

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