Bottom shaft drive gate with crank synchronous detection mechanism

Abstract

The utility model discloses a bottom axle drive gate with elbow synchronous detection mechanism, including the bottom axle, the bottom axle is fixed with the gate, a plurality of shaft sleeves are rotationally connected to the bottom axle, the bottom axle both ends are provided with elbow, and two groups elbow are connected with drive arrangement, and the drive arrangement includes support, and the support is rotationally connected with hydraulic cylinder, and the output shaft of hydraulic cylinder is articulated with elbow, and the output shaft end of hydraulic cylinder is provided with receiving plate. Compared with prior art, the receiving plate of the output shaft end of the hydraulic cylinder cooperates with the laser range finder on the shell, can detect the interval between the both in real time, and the ranging value of two groups of hydraulic cylinders can be compared to quickly judge whether the elbow moves synchronously, if out of step, can stop working in time and debug hydraulic cylinder drive parameter, effectively prevent the gate deflection torque overrun due to synchronous error, further avoid the distortion of the gate, and guarantee the gate structural integrity.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic gate technology, and in particular to a bottom shaft driven gate with a crank arm synchronous detection mechanism. Background Technology

[0002] In the water control system of water conservancy projects, the bottom shaft driven gate is the core execution equipment. With its advantages of smooth opening and closing and adaptability to wide orifices, it is widely used in key scenarios such as flood control scheduling of dams and water resource allocation in irrigation areas.

[0003] Its operating principle relies on two sets of symmetrical crank arms to form a linkage mechanism. The bottom shaft is driven to rotate by synchronous driving force, thereby realizing the precise opening and closing of the gate. The synchronization of the crank arms directly determines the overall force balance of the gate. If there is a slight deviation in the movement of the crank arms, the bottom shaft will continuously bear asymmetrical torque. Long-term accumulation will not only accelerate the wear of the bottom shaft bearing, but may also cause stress deformation of the gate panel, or even damage the sealing performance and cause the risk of water leakage.

[0004] In the early stages, the bottom shaft driven gate relied solely on manual adjustment of hydraulic cylinder parameters, which could not cope with dynamic interferences such as changes in hydraulic oil viscosity and crank arm wear during operation. During operation, the operator had to visually observe the gate's posture to determine the synchronization status, making it impossible to identify millimeter-level deviations. Often, by the time the gate showed obvious deviations and abnormal operating noises, the bottom shaft had already suffered irreversible wear, and the gate panel was also slightly deformed, which increased maintenance costs and affected the stability of the project operation.

[0005] Therefore, there is an urgent need for a bottom shaft driven gate with a crank arm synchronous detection mechanism to solve the above problems. Utility Model Content

[0006] The main purpose of this utility model is to provide a bottom shaft driven gate with a crank arm synchronization detection mechanism. The receiving plate at the end of the hydraulic cylinder output shaft cooperates with the laser rangefinder on the housing to detect the distance between the two in real time. By comparing the distance measurement values ​​of the two sets of hydraulic cylinders, it can be quickly determined whether the crank arm moves synchronously. If asynchrony occurs, the operation can be stopped in time and the hydraulic cylinder drive parameters can be adjusted. This effectively prevents the gate deflection torque from exceeding the limit due to synchronization error, thereby avoiding the gate from twisting and deforming and ensuring the structural integrity of the gate.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A bottom shaft driven gate with a crank arm synchronous detection mechanism includes a bottom shaft, on which a gate is fixed. Several bushings are rotatably connected to the bottom shaft. Crank arms are provided at both ends of the bottom shaft. A driving device is connected to two sets of crank arms. The driving device includes a support. A hydraulic cylinder is rotatably connected to the support. The output shaft of the hydraulic cylinder is hinged to the crank arm. A receiving plate is provided at the end of the output shaft of the hydraulic cylinder. A rangefinder matching the position of the receiving plate is provided on the housing of the hydraulic cylinder.

[0008] Furthermore, the receiving plate is fixed to one side of the first upright plate, and the first upright plate is fixedly connected to the end of the output shaft of the hydraulic cylinder.

[0009] Furthermore, the rangefinder is fixed to one side of the second upright plate, and the second upright plate is fixedly connected to the hydraulic cylinder.

[0010] Furthermore, a first sleeve is fixed to one side of the first upright plate, and a second sleeve is fixed to one side of the second upright plate, with the first sleeve and the second sleeve being sleeved together.

[0011] Furthermore, the receiving plate is located inside the first sleeve, and the rangefinder is located inside the second sleeve.

[0012] Furthermore, a connecting component is also connected to the crank arm.

[0013] Furthermore, the connecting assembly includes a fixing post that passes through the crank arm, and fixing plates and fixing seats are fixed on both sides of the fixing post, and the fixing plates and fixing seats are fixed to both sides of the crank arm by bolts.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention uses a receiving plate at the end of the hydraulic cylinder output shaft to work with a laser rangefinder on the housing to detect the distance between the two in real time. By comparing the distance measurement values ​​of the two sets of hydraulic cylinders, it can quickly determine whether the crank arm is moving synchronously. If asynchrony occurs, the operation can be stopped in time and the hydraulic cylinder drive parameters can be adjusted. This effectively prevents the gate deflection torque from exceeding the limit due to synchronization error, thereby avoiding the gate from twisting and deforming and ensuring the integrity of the overall gate structure.

[0015] The crank arm of this utility model is fixed with a fixed column by a fixed plate and a fixed seat. One end of the fixed column is slidably connected to the arc groove in the wall of the gate opening and closing machine chamber and cannot be detached. It can apply a force perpendicular to the direction of the hydraulic cylinder force to the crank arm, thereby balancing the force on the crank arm during movement, reducing the swing deviation of the crank arm, greatly improving the stability of the crank arm in the process of driving the gate, and ensuring that the gate runs more smoothly.

[0016] In this invention, the receiving plate is located inside the first sleeve and the rangefinder is located inside the second sleeve. The second sleeve is always fitted inside the first sleeve and the insertion distance is adjusted by the extension and retraction of the hydraulic cylinder. This effectively blocks external obstacles from obstructing the detection path between the rangefinder and the receiving plate, thus avoiding inaccurate distance measurement data due to obstruction. Attached Figure Description

[0017] Figure 1 This is a side view schematic diagram of a bottom shaft driven gate with a crank arm synchronous detection mechanism according to the present invention.

[0018] Figure 2 This is a schematic diagram of the connection structure of the first upright plate, receiving plate and first sleeve of a bottom shaft driven gate with a crank arm synchronous detection mechanism according to the present invention.

[0019] Figure 3 This is a schematic diagram showing the connection between the second vertical plate, the rangefinder, and the second sleeve of a bottom shaft driven gate with a crank arm synchronous detection mechanism according to this utility model.

[0020] Figure 4 This is a schematic diagram of the support and hydraulic cylinder connection of a bottom shaft driven gate with a crank arm synchronous detection mechanism according to the present invention.

[0021] Figure 5 This is a schematic diagram of the connection between the crank arm and the connecting assembly of a bottom shaft driven gate with a crank arm synchronous detection mechanism according to this utility model.

[0022] Figure 6 This is a schematic diagram showing the connection between the gate, bottom shaft, bushing, and crank arm of a bottom shaft driven gate with a crank arm synchronous detection mechanism according to this utility model.

[0023] Figure 7 This is a cross-sectional connection diagram of a bottom shaft drive gate with a crank arm synchronous detection mechanism fixed behind a dam according to the present invention.

[0024] In the diagram: 1. Crank arm; 2. Bottom shaft; 3. Bushing; 4. Support; 5. Hydraulic cylinder; 6. First vertical plate; 601. Receiving plate; 7. Second vertical plate; 701. Rangefinder; 8. Connecting assembly; 801. Fixed column; 802. Fixed plate; 803. Fixed seat; 9. First sleeve; 10. Second sleeve; 11. Gate. Detailed Implementation

[0025] The present invention will now be described in detail with reference to the accompanying drawings.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] like Figure 1-7 As shown, a bottom shaft driven gate with a crank arm synchronous detection mechanism includes a bottom shaft 2, a gate 11 fixed on the bottom shaft 2, a plurality of bushings 3 rotatably connected to the bottom shaft 2, crank arms 1 provided at both ends of the bottom shaft 2, a driving device connected to the two sets of crank arms 1, the driving device including a support 4, a hydraulic cylinder 5 rotatably connected to the support 4, the output shaft of the hydraulic cylinder 5 is hinged to the crank arm 1, a receiving plate 601 is provided at the end of the output shaft of the hydraulic cylinder 5, and a rangefinder 701 matching the position of the receiving plate 601 is provided on the housing of the hydraulic cylinder 5.

[0030] In this embodiment, such as Figure 1 and Figure 6 As shown, bushing 3 is fixed to the dam, and bushing 3 rotates with the bottom shaft 2 via bearings, as... Figure 7As shown, the hydraulic cylinder 5 is fixed to the boss in the hoisting machine chamber by the support 4. When it is necessary to adjust the turntable of the gate 11, the personnel can control the hydraulic cylinder 5 to work and apply force to the crank arm 1. Since the hydraulic cylinder 5 is rotatably connected to the support 4 and the bottom shaft 2 can rotate relative to the bushing 3, the crank arm 1 can swing, thereby driving the bottom shaft 2 to rotate, thereby driving the gate 11 to rotate, thus causing the gate 11 to open or close the dam.

[0031] When the output end of the hydraulic cylinder 5 extends or retracts, the rangefinder 701 can detect the distance between it and the receiving plate 601. By comparing the values ​​displayed by the rangefinders 701 on the two hydraulic cylinders 5, it can be determined whether the two crank arms 1 move synchronously. When the two do not move synchronously, the data measured by the two rangefinders 701 will be different. Therefore, the personnel can stop the operation in time and readjust the driving parameters of the hydraulic cylinders 5 to ensure that the two hydraulic cylinders 5 move synchronously. This will prevent the gate 11 from exceeding the limit of deflection torque due to the increase of the synchronization error of the two hydraulic cylinders 5, and avoid the gate 11 from twisting and deforming due to synchronization imbalance.

[0032] The 701 rangefinder is a laser rangefinder that can be connected to an external monitor.

[0033] like Figure 2 and Figure 3 As shown, the receiving plate 601 is fixed to one side of the first upright plate 6, and the first upright plate 6 is fixedly connected to the end of the output shaft of the hydraulic cylinder 5. The rangefinder 701 is fixed to one side of the second upright plate 7, and the second upright plate 7 is fixedly connected to the housing of the hydraulic cylinder 5. A first sleeve 9 is fixed to one side of the first upright plate 6, and a second sleeve 10 is fixed to one side of the second upright plate 7. The receiving plate 601 is located inside the first sleeve 9, and the rangefinder 701 is located inside the second sleeve 10. The first sleeve 9 and the second sleeve 10 are sleeved together, and one end of the second sleeve 10 is always inserted into the first sleeve 9. The insertion distance can be changed with the extension and retraction of the hydraulic cylinder 5, thereby avoiding obstacles from blocking the distancefinder 701 and the receiving plate 601 after long-term use.

[0034] Among them, such as Figure 5 and Figure 7 As shown, a connecting assembly 8 is also connected to the crank arm 1. The connecting assembly 8 includes a fixed column 801 that passes through the crank arm 1. A fixed plate 802 and a fixed seat 803 are fixed on both sides of the fixed column 801, respectively. The fixed plate 802 and the fixed seat 803 are fixed to both sides of the crank arm 1 by bolts, thereby fixing the fixed column 801 to the crank arm 1. Then, an arc-shaped groove matching the rotation path of the crank arm 1 is opened on the wall of the hoisting machine chamber. One end of the fixed column 801 is slidably connected in the arc-shaped groove and cannot be disengaged from the arc-shaped groove. Therefore, the connecting assembly 8 can apply force to the crank arm 1 and improve the stability of the crank arm 1 (the direction of the force applied to the crank arm 1 by the connecting assembly 8 is perpendicular to the direction of the force applied to the crank arm 1 by the hydraulic cylinder 5).

[0035] The cross-section of the arc groove is T-shaped, and the cross-section of the fixing post 801 inserted into the arc groove is also T-shaped, thereby preventing the fixing post 801 from detaching from the arc groove.

[0036] The gate hoisting chamber is the installation space for the gate drive mechanism (hydraulic cylinder 5, crank arm 1, etc.).

[0037] The working principle is as follows: Since the hydraulic cylinder 5 can rotate relative to the support 4 and the bottom shaft 2 can rotate relative to the bushing 3, the hydraulic cylinder 5 can drive the crank arm 1 to swing, thereby driving the bottom shaft 2 to rotate to realize the opening or closing of the gate 11 to the dam. At the same time, the receiving plate 601 at the end of the output shaft of the hydraulic cylinder 5 cooperates with the laser rangefinder 701 on the housing to detect the distance between them. By comparing the distance measurement values ​​of the two sets of hydraulic cylinders 5, it can be determined whether the crank arm 1 moves synchronously. If it is not synchronous, the operation should be stopped in time and the driving parameters of the hydraulic cylinder 5 should be adjusted to avoid the gate 11 from being twisted and deformed due to excessive deflection torque caused by synchronization error. In addition, the fixed column 801 fixed on the crank arm 1 by the fixed plate 802 and the fixed seat 803 has one end slidably connected to the arc groove in the wall of the hoisting machine room (it cannot be detached), which can apply a force perpendicular to the direction of the force of the hydraulic cylinder 5 to the crank arm 1, thereby improving the stability of the crank arm 1.

[0038] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. A bottom shaft driven gate with a crank arm synchronous detection mechanism, comprising a bottom shaft (2), a gate (11) fixed on the bottom shaft (2), a plurality of bushings (3) rotatably connected on the bottom shaft (2), and crank arms (1) provided at both ends of the bottom shaft (2), characterized in that: Two sets of crank arms (1) are connected to a drive device. The drive device includes a support (4). A hydraulic cylinder (5) is rotatably connected to the support (4). The output shaft of the hydraulic cylinder (5) is hinged to the crank arm (1). A receiving plate (601) is provided at the end of the output shaft of the hydraulic cylinder (5). A rangefinder (701) matching the position of the receiving plate (601) is provided on the housing of the hydraulic cylinder (5).

2. A bottom shaft driven gate with a crank arm synchronous detection mechanism according to claim 1, characterized in that: The receiving plate (601) is fixed to one side of the first upright plate (6), and the first upright plate (6) is fixedly connected to the end of the output shaft of the hydraulic cylinder (5).

3. A bottom shaft driven gate with a crank arm synchronous detection mechanism according to claim 2, characterized in that: The rangefinder (701) is fixed to one side of the second upright plate (7), and the second upright plate (7) is fixedly connected to the hydraulic cylinder (5).

4. A bottom shaft driven gate with a crank arm synchronous detection mechanism according to claim 3, characterized in that: A first sleeve (9) is fixed on one side of the first upright plate (6), and a second sleeve (10) is fixed on one side of the second upright plate (7). The first sleeve (9) and the second sleeve (10) are connected together.

5. A bottom shaft driven gate with a crank arm synchronous detection mechanism according to claim 4, characterized in that: The receiving plate (601) is located inside the first sleeve (9), and the rangefinder (701) is located inside the second sleeve (10).

6. A bottom shaft driven gate with a crank arm synchronous detection mechanism according to any one of claims 1-5, characterized in that: The crank arm (1) is also connected to a connecting component (8).

7. A bottom shaft driven gate with a crank arm synchronous detection mechanism according to claim 6, characterized in that: The connecting assembly (8) includes a fixed post (801) that passes through the crank arm (1). A fixed plate (802) and a fixed seat (803) are fixed on both sides of the fixed post (801). The fixed plate (802) and the fixed seat (803) are fixed to both sides of the crank arm (1) by bolts.

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