Arc-shaped gate full opening limiting method and arc-shaped gate

Abstract

The application discloses a full-opening limiting method of an arc-shaped gate and an arc-shaped gate based on the method. The full-opening limiting method of the arc-shaped gate comprises the following steps: S1, installing an inclination switch on the arc-shaped gate; S2, opening the arc-shaped gate from a closed position to a designed full-opening position, and recording an angle β measured by the inclination switch; S3, setting the angle β as an alarm threshold of the inclination switch; and S4, connecting the inclination switch with an input end of a relay, and connecting an output end of the relay to a gate full-opening limiting control loop. In the full-opening limiting method of the arc-shaped gate, the installation position of the inclination switch is relatively optional. Compared with a gate full-opening limiting method in the prior art, the full-opening limiting of the arc-shaped gate by the inclination switch does not need to be connected to a gate PLC control system, signals are only transmitted among the inclination switch, the relay and the gate full-opening limiting control loop, and the control logic is relatively simple and clear, so that faults are not prone to occur.

Description

Technical Field

[0001] This invention relates to the field of arc gate technology, specifically to an arc gate full-opening limit method and an arc gate based on the above method. Background Technology

[0002] Arc gates are generally used in conjunction with hydraulic hoists. The hydraulic hoist drives the arc gate to open or close. The hydraulic cylinder stroke detection device can measure the stroke of the cylinder, and then the PLC control system calculates the gate opening degree. When the gate opening degree reaches the limit value, the hydraulic hoist stops running to avoid the gate being over-opened.

[0003] In related technologies, gates are generally limited to full opening using a pull-rope gate opening device, a highly integrated displacement measuring device, or a proximity switch limit position control device. A pull-rope gate opening device includes a wire rope and an encoder. The wire rope connects the hydraulic cylinder piston and the encoder. When the piston extends or retracts, it drives the encoder to rotate, and the PLC control system calculates the gate opening value. When the gate reaches its full opening value, the hydraulic hoist stops. The highly integrated displacement measuring device works by measuring the displacement of the hydraulic cylinder piston through the magnetic induction effect between the measuring probe and the piston. The PLC control system then calculates the gate opening and stops the hydraulic hoist when the gate opening reaches its limit value. A proximity switch limit position control device installs a proximity switch on the fixed part of the gate slot of an arc-shaped gate. When the gate approaches full opening, a trigger device installed on the gate body activates the proximity switch, outputting switch contacts to the PLC controller, thereby limiting the gate's opening.

[0004] However, the above methods have the following drawbacks. First, the methods involve many steps to achieve the full-open limit of the gate, including source signal measurement and processing, fitting the gate opening degree with the measured signal, determining the gate is fully open, signal output, controlling the gate opening circuit relay, and the gate opening control circuit. The numerous steps from signal acquisition to signal output increase the risk of malfunctions. Second, the installation locations of the devices in the above methods are limited, and the installation process carries significant safety risks: for rope-operated gate opening devices, the wire rope needs to be installed at the piston; for highly integrated displacement measuring devices, the measuring probe needs to be installed at the piston rod end cap; for proximity switch limit position measurement and control devices, the triggering device needs to be installed on the gate body, which can easily cause corrosion damage to the gate body. Furthermore, the installation of proximity switches involves working near water and at heights, posing significant safety risks. Summary of the Invention

[0005] The present invention aims to at least partially solve one of the technical problems in the related art.

[0006] Therefore, this invention proposes a method for limiting the full opening of an arc gate. In this method, the installation position of the tilt switch can be selected in many ways, and the process of limiting the arc gate has fewer steps and is less prone to failure.

[0007] This invention also proposes an arc-shaped gate.

[0008] The arc-shaped gate full-opening limit method of this invention includes the following steps:

[0009] S1: Install an angle switch on the arc-shaped gate, the angle switch being able to measure the angle of rotation of the arc-shaped gate;

[0010] S2: Open the arc-shaped gate from the closed position to the designed fully open position, and record the angle β measured by the tilt switch;

[0011] S3: Set the angle β as the alarm threshold of the tilt switch, and the tilt switch can output an electrical signal when the arc gate rotates to the angle β;

[0012] S4: Connect the tilt switch to the input terminal of the relay, and connect the output terminal of the relay to the gate full-open limit control circuit. The relay can connect the gate full-open limit control circuit when it receives the electrical signal, so as to stop the arc gate from opening.

[0013] In the fully open limit method for an arc-shaped gate according to this invention, the fully open limit of the arc-shaped gate is achieved by using an angle switch. The angle switch only needs to rotate with the opening of the arc-shaped gate, and its installation position on the gate is highly flexible. Therefore, the angle switch can be installed in a location convenient for construction, maintenance, and inspection, reducing safety risks during installation and maintenance. Compared to the fully open limit method for gates in related technologies, using an angle switch to fully open the arc-shaped gate does not require connection to the gate's PLC control system. The signal is transmitted only between the angle switch, the relay, and the fully open limit control circuit. The control logic is simpler and clearer, less prone to failure, and can reliably limit the opening of the arc-shaped gate.

[0014] In some embodiments, in step S1: first, the arc-shaped gate is placed in the closed position; then, the tilt switch is placed on the arc-shaped gate, the position of the tilt switch is adjusted so that the mounting surface of the tilt switch is in a horizontal position, the tilt switch is rotated in the horizontal position so that the measuring axis of the tilt switch is parallel to the rotation plane of the arc-shaped gate; finally, the tilt switch is fixed to the arc-shaped gate.

[0015] In some embodiments, in step S1, the tilt switch is installed on the gate arm of the arc-shaped gate.

[0016] In some embodiments, step S1 includes the following steps:

[0017] S11: Place the arc-shaped gate in the closed position and install a base on the gate support arm;

[0018] S12: Polish the upper surface of the base to make the upper surface of the base horizontal.

[0019] S13: Align the mounting surface of the tilt switch with the upper surface of the base, and rotate the tilt switch until the measuring axis is parallel to the rotation plane of the arc-shaped gate;

[0020] S14: Fix the tilt switch to the base.

[0021] In some embodiments, in step S4, the normally open contact of the tilt switch is connected to the input terminal of the relay, and the output terminal of the relay is connected to the gate full-open limit control circuit.

[0022] In some embodiments, the fully open limiting method of the arc gate includes step S5: setting a protective device on the outer periphery of the tilt switch.

[0023] The arc-shaped gate of this invention is based on the arc-shaped gate full-opening limit method described in the above embodiments. The arc-shaped gate includes a gate body, a gate arm, a base, and a tilt switch. One end of the gate arm is fixedly connected to the gate body, and the gate arm can drive the gate body to rotate to realize the opening and closing of the arc-shaped gate. The base is disposed on the gate arm, and when the arc-shaped gate is in the closed position, the upper surface of the base is in a horizontal position. The tilt switch is disposed on the upper surface of the base, and the tilt switch is used to connect the gate full-opening limit control circuit to activate the gate full-opening limit control circuit when the gate is opened to a set angle.

[0024] In some embodiments, the arc-shaped gate includes a relay, the tilt switch is connected to the input terminal of the relay, and the output terminal of the tilt switch is used to connect to the gate's full-open limit control circuit.

[0025] In some embodiments, the tilt switch includes a normally open output contact, which is connected to the input terminal of the relay, and the output terminal of the relay is used to connect to the gate full-open limit control circuit.

[0026] In some embodiments, the arc-shaped gate includes a protective cover disposed on the outer periphery of the tilt switch. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the arc-shaped gate according to an embodiment of the present invention.

[0028] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle.

[0029] Attached reference numerals: 1. Gate body; 2. Gate support arm; 3. Base; 4. Inclination switch; 5. Hydraulic cylinder; 6. Cable. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0031] The arc-shaped gate full-opening limit method of this invention includes the following steps:

[0032] S1: Install an angle switch on the arc-shaped gate. The angle switch can measure the rotation angle of the arc-shaped gate. Specifically, the angle switch can be installed on the gate body, gate arm, hydraulic cylinder, support hinge, etc. When the arc-shaped gate rotates to open, the angle switch can rotate with the arc-shaped gate and measure the tilt angle.

[0033] S2: Open the arc-shaped gate from the closed position to the designed fully open position and record the angle β of the tilt switch. The angle recorded by the tilt switch is the angle the arc-shaped gate rotated when it is in the designed fully open position. Alternatively, the tilt angle of the arc-shaped gate when it is in the designed fully open position can be determined by consulting the engineering design drawings of the arc-shaped gate.

[0034] S3: Set angle β as the alarm threshold of the tilt switch. The tilt switch can output an electrical signal when the arc gate rotates to angle β. Specifically, the tilt switch can be adjusted using an adjustment device. Set the angle β rotated when the arc gate is in the designed fully open position as the alarm threshold of the tilt switch. When the tilt switch tilts to angle β, it can output an electrical signal.

[0035] S4: Connect the tilt switch to the input terminal of the relay, and connect the output terminal of the relay to the gate full-open limit control circuit. The relay will activate the gate full-open limit control circuit upon receiving an electrical signal, thus stopping the arc-shaped gate from opening. When the arc-shaped gate reaches the designed full-open position, the tilt switch detects an angle that reaches the alarm threshold and sends an electrical signal. Upon receiving this signal, the relay activates the gate full-open limit control circuit, stopping the gate's opening process and preventing over-opening.

[0036] In the fully open limit method for an arc-shaped gate according to this invention, the fully open limit of the arc-shaped gate is achieved by using an angle switch. The angle switch only needs to rotate with the opening of the arc-shaped gate, and its installation position on the gate is highly flexible. Therefore, the angle switch can be installed in a location convenient for construction, maintenance, and inspection, reducing safety risks during installation and maintenance. Compared to the fully open limit method for gates in related technologies, using an angle switch to fully open the arc-shaped gate does not require connection to the gate's PLC control system. The signal is transmitted only between the angle switch, the relay, and the fully open limit control circuit. The control logic is simpler and clearer, less prone to failure, and can reliably limit the opening of the arc-shaped gate.

[0037] In some embodiments, in step S1: first, the arc-shaped gate is placed in the closed position; then, the tilt switch is placed on the arc-shaped gate, the position of the tilt switch is adjusted so that the mounting surface of the tilt switch is in a horizontal position, the tilt switch is rotated in the horizontal position so that the measuring axis of the tilt switch is parallel to the rotation plane of the arc-shaped gate; finally, the tilt switch is fixed to the arc-shaped gate.

[0038] The plane of rotation of the arc gate is the plane on which the arc gate traces its trajectory during the rotation and opening process. When the measuring axis of the tilt switch is parallel to the plane of rotation, the tilt angle detected is more accurate, which can then connect the gate full opening limit control circuit at a more accurate time to avoid the gate being over-opened.

[0039] In some embodiments, in step S1, the tilt switch is installed on the gate arm of the arc-shaped gate. The gate arm facilitates installation and subsequent inspection, reducing the risks to workers during construction and maintenance. Specifically, the tilt switch can be installed at the tail end of the gate arm.

[0040] In other embodiments, the tilt switch can also be installed on the gate body, hydraulic cylinder, or support hinge position.

[0041] In some embodiments, step S1 includes the following steps:

[0042] S11: Place the arc-shaped gate in the closed position and install the base on the gate support arm;

[0043] S12: Grind the upper surface of the base to make it level.

[0044] S13: Align the mounting surface of the tilt switch with the upper surface of the base, and rotate the tilt switch until the measuring axis is parallel to the rotation plane of the arc gate;

[0045] S14: Securely connect the tilt switch to the base.

[0046] When the arc-shaped gate is in the closed position, the gate arm is tilted, making it inconvenient to directly install the tilt switch. A better approach is to first install a base on the gate arm, and then install the tilt switch on the base. Specifically, the base can be a wedge-shaped body. After installing the base on the gate arm, its upper surface should be nearly horizontal. Then, the upper surface of the base is ground to achieve a horizontal position before installing and securing the tilt switch.

[0047] In some embodiments, in step S4, the normally open contact of the tilt switch is connected to the input terminal of the relay, and the output terminal of the relay is connected to the gate full-open limit control circuit. Specifically, the output terminal of the relay can be normally open. When the tilt switch reaches the alarm threshold, its normally open contact is closed and sends an electrical signal to the relay. Upon receiving the electrical signal, the relay's output terminal closes and connects the gate full-open limit control circuit, stopping the opening of the arc gate.

[0048] In some embodiments, the method for limiting the full opening of the arc-shaped gate includes step S5: setting a protective device on the outer periphery of the tilt switch. Setting the protective device can shield the tilt switch and prevent foreign objects from damaging it.

[0049] The arc-shaped gate according to an embodiment of the present invention is described below.

[0050] The arc gate of this invention is based on the arc gate full-opening limit method in the above embodiments.

[0051] like Figure 1 , 2 As shown, the arc-shaped gate includes a gate body 1, a gate support arm 2, a base 3, and a tilt switch 4.

[0052] like Figure 1 As shown, the solid line indicates the arc-shaped gate is in the closed position, and the dashed line indicates the arc-shaped gate is in the fully open position. One end of the gate support arm 2 is fixedly connected to the gate body 1, and the gate support arm 2 can drive the gate body to rotate to realize the opening and closing of the arc-shaped gate. The base 3 is set on the gate support arm 2, and when the arc-shaped gate is in the closed position, the upper surface of the base 3 is in a horizontal position; the tilt switch 4 is set on the upper surface of the base 3, and the tilt switch 4 is used to connect the gate fully open limit control circuit, so as to activate the gate fully open limit control circuit when the gate is opened to a set angle. Specifically, one end of the gate support arm 2 is connected to the lower part of the gate body 1, and the gate body 1 is also connected to a hydraulic cylinder, which is used to drive the opening and closing of the arc-shaped gate. The tilt switch 4 is connected to a cable 6, which is used to supply power to the tilt switch 4 and to transmit the electrical signal emitted by the tilt switch 4, ultimately stopping the opening process of the arc-shaped gate through the gate fully open limit control circuit.

[0053] In some embodiments, the arc-shaped gate includes a relay, and a tilt switch 4 is connected to the input terminal of the relay. The output terminal of the tilt switch 4 is used to connect to the gate's fully open limit control circuit. Specifically, the output terminal of the relay can be normally open and connected to the gate's fully open limit control circuit. When the relay receives an electrical signal from the tilt switch 4, its output terminal closes and connects to the gate's fully open limit control circuit, stopping the opening process of the arc-shaped gate.

[0054] In some embodiments, the tilt switch 4 includes a normally open output contact, which is connected to the input terminal of a relay. The output terminal of the relay is used to connect to the gate full-open limit control circuit. Specifically, when the tilt angle of the tilt switch 4 reaches the alarm threshold, the normally open output contact of the tilt switch 4 closes and sends an electrical signal to the relay. Upon receiving the electrical signal, the relay connects the gate full-open limit control circuit, and the opening of the arc gate stops.

[0055] In some embodiments, the arc-shaped gate includes a protective cover disposed on the outer periphery of the tilt switch 4. The protective cover protects the outer periphery of the arc-shaped gate, preventing foreign objects from damaging the tilt switch 4.

[0056] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0057] 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 invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0058] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," 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, an electrical connection, or a connection that allows communication between them; 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 invention according to the specific circumstances.

[0059] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0060] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0061] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for limiting the full opening of an arc-shaped gate, characterized in that, Includes the following steps: S1: Install an angle switch on the arc-shaped gate, the angle switch being able to measure the angle of rotation of the arc-shaped gate; S2: Open the arc-shaped gate from the closed position to the designed fully open position, and record the angle measured by the tilt switch. β ; S3: The angle β The alarm threshold for the tilt switch is set, and the tilt switch can rotate the arc-shaped gate to the specified angle. β Output electrical signal at time; S4: Connect the tilt switch to the input terminal of the relay, and connect the output terminal of the relay to the gate full opening limit control circuit. The relay can connect the gate full opening limit control circuit when it receives the electrical signal, so as to stop the arc gate from opening. In step S1: First, place the arc-shaped gate in the closed position; then, place the tilt switch on the arc-shaped gate, adjust the position of the tilt switch so that the mounting surface of the tilt switch is in a horizontal position, rotate the tilt switch in the horizontal position so that the measuring axis of the tilt switch is parallel to the rotation plane of the arc-shaped gate; finally, fix the tilt switch to the arc-shaped gate. Step S1 includes the following steps: S11: Place the arc-shaped gate in the closed position and install a base on the gate support arm; S12: Polish the upper surface of the base to make the upper surface of the base horizontal. S13: Align the mounting surface of the tilt switch with the upper surface of the base, and rotate the tilt switch until the measuring axis is parallel to the rotation plane of the arc-shaped gate; S14: Fix the tilt switch to the base.

2. The arc-shaped gate full-opening limiting method according to claim 1, characterized in that, In step S1, the tilt switch is installed on the gate arm of the arc-shaped gate.

3. The method for limiting the full opening of an arc-shaped gate according to claim 1, characterized in that, In step S4, the normally open contact of the tilt switch is connected to the input terminal of the relay, and the output terminal of the relay is connected to the gate full-open limit control circuit.

4. The method for limiting the full opening of an arc-shaped gate according to any one of claims 1-3, characterized in that, Step S5 includes: installing a protective device on the outer periphery of the tilt switch.

5. An arc-shaped gate based on the arc-shaped gate full-opening limiting method according to any one of claims 1-4, characterized in that, The arc-shaped gate includes: Door body; A gate support arm, one end of which is fixedly connected to the gate body, and the gate support arm can drive the gate body to rotate to realize the opening and closing of the arc-shaped gate; A base is disposed on the gate support arm, and when the arc-shaped gate is in the closed position, the upper surface of the base is in a horizontal position; An angle switch is disposed on the upper surface of the base and is used to connect the gate full opening limit control circuit so as to activate the gate full opening limit control circuit when the gate is opened to a set angle value.

6. The arc-shaped gate according to claim 5, characterized in that, Includes a relay, the tilt switch is connected to the input terminal of the relay, and the output terminal of the tilt switch is used to connect to the gate full-open limit control circuit.

7. The arc-shaped gate according to claim 6, characterized in that, The tilt switch includes a normally open output contact, which is connected to the input terminal of the relay. The output terminal of the relay is used to connect to the gate full-open limit control circuit.

8. The arc-shaped gate according to any one of claims 5-7, characterized in that, Includes a protective cover, which is disposed on the outer periphery of the tilt switch.

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