An automatic unlocking mechanism of a hydraulic gate support device

Abstract

An automatic unlocking mechanism for a hydraulic gate support device, belonging to the field of hydraulic gates, includes a hydraulic cylinder, a support rod, and a support mounted on the back of the gate plate. The upper surface of the support has a positioning groove for abutting the support rod. A swing support is rotatably connected to the side of the support closer to the gate plate relative to the positioning groove. In its first state, the swing support cantilevered over the positioning groove. While the support rod is moved across the positioning groove to unlock the gate, a gap is maintained between the lower surface of the swing support and the support, allowing the lower end of the support rod to pass through. The lower end of the support rod, which enters below the swing support, drives its rotation, eliminating the need for a torsion spring reset, saving structural components, and eliminating the risk of elastic decay. Moreover, the rotational force of the swing support comes from the hydraulic cylinder, which provides a greater driving force for controlling the rotation of the swing support compared to a torsion spring reset, reducing the risk of failure due to obstruction by river silt or other debris.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy gates, specifically an automatic unlocking mechanism for a hydraulic gate support device. Background Technology

[0002] Hydraulic gates are used as water-retaining gates in waterways such as landscape rivers and agricultural irrigation systems. They utilize hydraulic cylinders to drive the gate plate to rotate around a bottom axis to adjust the gate opening. In current hydraulic gate support structures, after the gate plate is rotated and raised to a predetermined position using the hydraulic cylinder, a support rod hinged to the back of the gate plate is typically used to support the gate plate, preventing the hydraulic cylinder from being under constant stress. The lower end of the support rod usually abuts against a support platform set on the riverbed foundation to maintain support. When it is necessary to lower the gate plate height, a corresponding unlocking cylinder is usually required to detach the lower end of the support rod from the support platform. This method requires an additional unlocking cylinder, increasing the risk of damage.

[0003] To address this problem, Chinese patent document (application number: CN201820482085.5) proposes an automatic support release device. This device uses a recessed support step as the fulcrum for the lower end of a support rod. A rotatable rotating component is installed on the support step near the gate plate. When support release is needed, a hydraulic cylinder first lifts the gate plate, causing the support rod to pass over the rotating component. Then, the gate plate is lowered, and the support rod pushes the rotating component to rotate to the recessed area. The lower end of the support rod then passes over the recess via the rotating component, releasing the support. Figure 1 As shown, in this structure, when the rotating component 10 rotates to the recess 11, its upper surface is flush with the upper surface of the supporting step 9. After the support is released, the rotating component 10 needs to be reset and disengaged from the recess 11 under the action of the torsion spring 12 to ensure that the lower end of the support rod 4 can smoothly fall into the recess during the next support. This structure eliminates the need for an unlocking cylinder and can achieve automatic unlocking controlled by a hydraulic cylinder. However, this structure requires the use of a torsion spring to reset the rotating component. Since the supporting step is located in the riverbed, the torsion spring is subject to long-term water erosion, and its elasticity is easily weakened. Moreover, the water flow contains a lot of silt and debris, and insufficient torsion spring torque can easily cause the rotating component to jam and fail to reset. These factors can easily lead to gate plate support failure. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defect of the rotating parts being stuck and unable to reset in the prior art, and to provide an automatic unlocking mechanism for a hydraulic gate support device.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: an automatic unlocking mechanism for a hydraulic gate support device, including a hydraulic cylinder and a support rod disposed on the back of the gate plate. The lower end of the hydraulic cylinder is rotatably connected to the ground foundation, and the upper end is connected to a hinge seat on the back of the gate plate. The upper end of the support rod is hinged to the back of the gate plate, and the lower end rests on the ground foundation and can move back and forth as the gate plate rotates. A support is provided on the ground foundation on the back of the gate plate to abut the lower end of the support rod so that it can support the gate plate. The upper end of the support gradually rises towards the gate plate. A positioning groove is provided on the upper end of the support for abutting the support rod. A rotatable connection is provided on the side of the support closer to the gate plate than the positioning groove. A swing support is provided; the swing support has a first state in which it rotates to a limited position in the direction of the positioning groove, and a second state in which it rotates to a limited position in the direction of the gate plate; in the second state, the swing support can be moved to the lower end of its support rod facing the gate plate to push the swing support to rotate from the second state to the first state; in the first state, the swing support is cantilevered above the positioning groove, and a gap is formed between the lower end face of the swing support and the upper surface of the support for the lower end of the support rod to pass through, so that the lower end of the support rod can enter the positioning groove below the swing support through the gap; the swing support can be pulled from the first state to the second state by the lower end of the support rod entering below it.

[0006] In the first state, the upper surface of the swing support is either a plane or an inclined plane that slopes downward toward the positioning groove.

[0007] In the second state, the side of the swing support facing the positioning groove is either a vertical plane or an inclined plane with its upper end tilted towards the gate plate.

[0008] In the second state, the swing support has a space between its side facing the gate plate and the support to accommodate the lower end of the support rod.

[0009] The upper surface of the support is an inclined surface that gradually slopes and rises towards the gate plate.

[0010] The support includes two spaced-apart support plates, the upper surface of which gradually rises toward the gate plate and is provided with a positioning groove; the inner or outer sides of the two support plates are respectively provided with swing support members.

[0011] The lower end of the support rod is provided with a horizontal bar extending to the side. The horizontal bar can enter below the support through the gap between the swing support and the support in the first state and fall into the positioning groove.

[0012] The crossbar is equipped with rollers.

[0013] The support is provided with a first limiting member for limiting the rotation position of the swing support member away from the gate plate, and a second limiting member for limiting the rotation position of the swing support member towards the gate plate.

[0014] The beneficial effects of this invention are as follows: After being laid flat, the swing support is cantilevered over the positioning groove. While enabling the support rod to pass over the positioning groove for unlocking, a space is maintained between the lower end of the swing support and the support base to allow the lower end of the support rod to pass through. In this structure, the lower end of the support rod, which enters below the swing support, drives its rotation, eliminating the need for a torsion spring reset, saving structural components, and eliminating the risk of elastic decay. Moreover, the rotational force of the swing support comes from a hydraulic cylinder, which provides a greater driving force for controlling the rotation of the swing support compared to a torsion spring reset, and reduces the risk of failure due to obstruction by river silt or other debris. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of an automatic support release device in the prior art.

[0016] Figure 2 This is a schematic diagram of the hydraulic gate support device.

[0017] Figure 3 This is a schematic diagram of the support structure in this utility model.

[0018] Figure 4 This is a schematic diagram showing the support rod in the supporting position in the first state of the swing support component in this utility model.

[0019] Figure 5 This is a schematic diagram of the swing support in the second state of this utility model.

[0020] Figure 6 This is a schematic diagram showing the support rod in the unlocked position in the first state of the swing support component in this utility model.

[0021] The markings in the diagram are: 1. Ground foundation, 2. Gate plate, 3. Hydraulic cylinder, 4. Support rod, 401. Crossbar, 402. Roller, 5. Support, 501. Support plate, 502. Positioning groove, 6. Swing support, 7. First limiting component, 8. Second limiting component, 9. Support step, 10. Rotating component, 11. Recess. Detailed Implementation

[0022] 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. Furthermore, the listed embodiments are only a part of this utility model, and not all embodiments.

[0023] like Figure 2 As shown, the hydraulic gate support device includes a gate plate 2, a hydraulic cylinder 3, and a support rod 4. The lower end of the hydraulic cylinder 3 is rotatably connected to the ground foundation 1, and the upper end is connected to a hinge seat on the back of the gate plate 2. The upper end of the support rod 4 is hinged to the back of the gate plate 2, and the lower end rests on the ground foundation 1. During the process of the hydraulic cylinder 3 extending and retracting to drive the gate plate 2 to rotate and open, the support rod 4 hinged to the back of the gate plate 2 rotates under the action of gravity, and its lower end moves back and forth with the rotation of the gate plate 2. A support 5 is provided on the ground foundation 1 on the back of the gate plate 2, and a positioning groove 502 is provided on the upper surface of the support 5. After the lower end of the support rod 4 enters the positioning groove 502, it can hold the support rod 4, restricting its lower end from moving away from the gate plate 2, thereby providing support force.

[0024] like Figure 3 As shown, the upper surface of the support 5 gradually rises towards the gate plate 2. Specifically, the upper surface can be an inclined plane that gradually rises towards the gate plate 2. This inclined plane can be linearly continuous or discontinuous as shown in the figure. A swing support 6 is rotatably connected to the support 5 on the side closer to the gate plate 2 relative to the positioning groove 502. The swing support 6 extends upward to the upper surface of the support 5. When the lower end of the support rod 4 moves along the upper surface of the support 5, it can contact the swing support 6 and drive it to rotate. In the illustrated embodiment, the support 5 includes two spaced support plates 501. The upper surface of the support plates 501 gradually rises towards the gate plate 2 and is provided with a positioning groove 502. The inner surfaces of the two support plates 501 are respectively provided with swing supports 6. The swing support 6 can also be provided on the outer surface of the support plates 501. In the illustrated embodiment, the rotational connection point between the swing support 6 and the support 5 is located at a position higher than the upper surface of the positioning groove 502.

[0025] like Figure 3 As shown, the lower end of the support rod 4 is provided with a horizontal bar 401 extending to the side, and a roller 402 is provided on the horizontal bar 401. The roller 402 is used to assist the lower end of the support rod 4 in moving on the ground foundation. When the lower end of the support rod 4 moves to the upper end surface of the support 5, the horizontal bar 401 can fall into the positioning groove 502, so that the support rod 4 is in a supported state.

[0026] The swing support 6 has a first state in which it rotates to a limited position in the direction of the positioning groove 502, and a second state in which it rotates to a limited position in the direction of the gate plate 2. Figure 4As shown, the first state of the swing support 6 is a flat position, in which the swing support 6 is cantilevered above the positioning groove 502. The extension length of the swing support 6 can cover the entire positioning groove 502, so that when the lower end of the support rod 4 slides along the upper part of the swing support 6, it can directly cross the positioning groove 502. As shown in the figure, in this state, the position of the swing support 6 is higher than the positioning groove 502, and a gap is formed between the lower end face of the swing support 6 and the upper surface of the support 5, allowing the lower end of the support rod 4 to enter below the swing support 6. For ease of illustration, only the end face of the lower end crossbar 401 of the support rod is shown in the figure. During the process of the gate plate being raised and the lower end of the support rod moving towards the gate plate, the lower end of the support rod can enter below the swing support 6 through the gap between the swing support 6 and the support 5 and fall into the positioning groove 502.

[0027] When unlocking is required, the hydraulic cylinder pushes the gate plate slightly upward, and the lower end of the support rod 4 moves towards the gate plate. During the movement, the lower end of the support rod 4 pulls the swing support 6 to rotate towards the gate plate. A second limiting member 8 is provided on the support 5 to limit the rotation position of the swing support 6 towards the side closer to the gate plate 2. After the swing support 6 is pulled by the lower end of the support rod 4 from the first state to the limited position, it enters the second state.

[0028] like Figure 5 As shown, in the second state, the side of the swing support 6 facing the positioning groove 502 is either a vertical plane or an inclined plane with its upper end tilted towards the gate plate 2. This allows the lower end of the support rod 4 to pass over the swing support and move to the side of the swing support facing the gate plate 2 as it continues to move with the gate plate. In the second state, there is space between the side of the swing support 6 facing the gate plate 2 and the support 5 to accommodate the lower end of the support rod 4. After the lower end of the support rod 4 moves to the side of the swing support facing the gate plate 2, the hydraulic cylinder is retracted to lower the gate plate, and the lower end of the support rod 4 pushes the swing support 6 to rotate towards the positioning groove 502. A first limiting member 7 is provided on the support 5 to limit the rotation position of the swing support 6 away from the gate plate 2. After the swing support 6 is pushed from the second state to the limited position by the lower end of the support rod 4, it returns to the first state.

[0029] like Figure 6 As shown, in the first state, the upper surface of the swing support 6 is either a flat surface or an inclined surface sloping downward toward the positioning groove 502. When the swing support 6 is rotated to the first state, the lower end of the support rod 4 is positioned above the swing support 6, allowing it to move along the upper surface of the swing support 6 past the positioning groove 502 to unlock.

[0030] Since the pressure on the gate plate is transferred to the hydraulic cylinder during unlocking, the support rod 4 does not bear the supporting force, and the swing support 6 only needs to bear the weight of the support rod 4 itself. Therefore, the swing support 6 in a cantilever state is sufficient to support the weight of the support rod 4 itself. Moreover, although there is a certain height difference between the swing support 6 and the support 5 in the first state, since the support rod 4 does not need to bear the supporting force and its own weight is not large, the lower end of the support rod 4 will not be damaged when it falls directly from the swing support 6 onto the support 5 or the ground foundation.

[0031] When the gate plate needs to be supported again, the gate plate is lifted by a hydraulic cylinder, so that the lower end of the support rod 4 enters the space between the swing support 6 and the support 5 and falls into the positioning groove to achieve support and positioning.

[0032] 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. These easily conceived changes or substitutions should all be covered within the protection scope of this utility model.

Claims

1. An automatic unlocking mechanism for a hydraulic gate support device, comprising a hydraulic cylinder (3) and a support rod (4) disposed on the back of a gate plate (2), wherein the lower end of the hydraulic cylinder (3) is rotatably connected to a ground foundation (1), and the upper end is connected to a hinge seat on the back of the gate plate (2); the upper end of the support rod (4) is hinged to the back of the gate plate (2), and the lower end rests on the ground foundation (1), and can move back and forth with the rotation of the gate plate (2); a support (5) is provided on the ground foundation (1) on the back of the gate plate (2) for abutting the lower end of the support rod (4) so ​​that it can support the gate plate, wherein the upper end of the support (5) faces the gate plate (2) and gradually... The support (5) is raised in a step, and a positioning groove (502) for abutting the support rod (4) is provided on the upper end surface of the support (5). A swing support (6) is rotatably connected on the side of the support (5) closer to the gate plate (2) relative to the positioning groove (502). The swing support (6) has a first state in which it rotates to a limited position in the direction of the positioning groove (502) and a second state in which it rotates to a limited position in the direction of the gate plate (2). In the second state, the swing support (6) can be moved to the lower end of the support rod (4) on the side facing the gate plate (2) to push the swing support (6) to rotate from the second state to the first state. The characteristic is that: In the first state, the swing support (6) is cantilevered over the positioning groove (502) and a gap is formed between the lower end face of the swing support (6) and the upper surface of the support (5) for the lower end of the support rod (4) to pass through, so that the lower end of the support rod (4) can enter the positioning groove (502) below the swing support (6) through the gap; the swing support (6) can be pulled from the first state to the second state by the lower end of the support rod (4) below it.

2. The automatic unlocking mechanism of a hydraulic gate support device as described in claim 1, characterized in that: In the first state, the upper surface of the swing support (6) is either a plane or an inclined surface that slopes downward toward the positioning groove (502).

3. The automatic unlocking mechanism of a hydraulic gate support device as described in claim 1, characterized in that: In the second state, the side of the swing support (6) facing the positioning groove (502) is a vertical plane or an inclined plane with its upper end tilted toward the gate plate (2).

4. The automatic unlocking mechanism of a hydraulic gate support device as described in claim 1, characterized in that: In the second state, the swing support (6) has a space between its side facing the gate plate (2) and the support (5) to accommodate the lower end of the support rod (4).

5. The automatic unlocking mechanism of a hydraulic gate support device as described in claim 1, characterized in that: The upper surface of the support (5) is an inclined surface that gradually tilts and rises toward the gate plate (2).

6. The automatic unlocking mechanism of a hydraulic gate support device as described in claim 1, characterized in that: The support (5) includes two spaced support plates (501), the upper surface of the support plate (501) gradually rises towards the gate plate (2), and is provided with a positioning groove (502); the inner or outer sides of the two support plates (501) are respectively provided with swing support members (6).

7. The automatic unlocking mechanism of a hydraulic gate support device as described in claim 1 or 6, characterized in that: The lower end of the support rod (4) is provided with a horizontal bar (401) extending to the side. The horizontal bar (401) can enter below it through the gap between the swing support (6) and the support (5) in the first state and fall into the positioning groove (502).

8. The automatic unlocking mechanism of a hydraulic gate support device as described in claim 7, characterized in that: The crossbar (401) is provided with rollers (402).

9. The automatic unlocking mechanism of a hydraulic gate support device as described in claim 1, characterized in that: The support (5) is provided with a first limiting member (7) for limiting the rotation position of the swing support (6) away from the gate plate (2) and a second limiting member (8) for limiting the rotation position of the swing support (6) towards the gate plate (2).

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