Device for remotely displaying opening degree of flat gate

Abstract

The utility model discloses a device for remotely displaying the opening degree of a flat gate, which is characterized in that a screw hoist is arranged above a flashboard, the screw hoist is screwed with a lead screw, the bottom end of the lead screw is connected with the flashboard, the periphery of the lead screw is sleeved with a lead screw protective cover, and the bottom surface of the lead screw protective cover is connected with the top surface of the screw hoist; an upper limit switch and a lower limit switch are arranged on the outer wall of the lead screw protective cover, a pull rope encoder is arranged above the lead screw protective cover, a pull rope of the pull rope encoder is arranged in the top surface of the lead screw protective cover in a penetrating manner and is connected with the top end of the lead screw, the upper limit switch, the lower limit switch and the pull rope encoder are respectively communicated with a PLC (Programmable Logic Controller), and the PLC is communicated with an upper monitoring server. According to the utility model, the digital quantity input points of the PLC are respectively connected with the upper limit switch, the lower limit switch and the pull rope encoder, and the upper monitoring server is in communication connection with the PLC through the industrial Ethernet, so that the opening degree of the gate is displayed in real time.

Description

Technical Field

[0001] The utility model belongs to the technical field of the control of a flat gate, and particularly relates to a device for remotely displaying the opening degree of a flat gate. Background Art

[0002] For the measurement of the opening degree of the flat gate at the canal head, the running time of the gate rising or falling is calculated through the gate operation feedback signal to simulate the opening degree of the gate, and the opening degree of the gate is automatically calibrated at two position points of being closed in place and opened in place. In actual work, due to many factors such as the loss of the operation feedback signal, the opening degree not being calibrated for a long time, and the relative sliding between the motor and the reducer at the slider coupling, there is a certain error between the simulated opening degree and the actual one. With the accumulation of the opening degree error, the error becomes larger and larger. Therefore, the accuracy of the simulated opening degree of the gate is not high, and when the gate is in the working state, it is difficult for the staff to detect the measurement error of the opening degree of the gate. If it cannot be corrected in time, it will seriously affect the regulation effect of the gate on the water passage. Content of the Utility Model

[0003] The purpose of the utility model is to provide a device for remotely displaying the opening degree of a flat gate to solve the above problems.

[0004] In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A device for remotely displaying the opening degree of a flat gate comprises a gate panel. A screw-type hoist is arranged above the gate panel. A lead screw is screwed in the screw hole of the screw-type hoist. The bottom end of the lead screw is fixedly connected with the gate panel. A lead screw protective cover is sleeved on the outer periphery of the lead screw. The bottom surface of the lead screw protective cover is fixedly connected with the top surface of the screw-type hoist. An upper limit switch and a lower limit switch are symmetrically arranged on the outer wall of the lead screw protective cover respectively. A rope encoder is arranged above the lead screw protective cover. The rope of the rope encoder penetrates through the top surface of the lead screw protective cover and is fixedly connected with the top end of the lead screw. The upper limit switch, the lower limit switch and the rope encoder are respectively communicated with a PLC controller, and the PLC controller is communicated with an upper monitoring server.

[0006] In order to further implement the utility model, both the upper limit switch and the lower limit switch adopt laser opposed switches. The upper limit switch is arranged at the upper limit position of the lead screw corresponding to the lead screw protective cover, and the lower limit switch is arranged at the lower limit position of the lead screw corresponding to the lead screw protective cover.

[0007] In order to further implement the utility model, the central axes of the gate panel, the lead screw, the lead screw protective cover and the rope are on the same straight line.

[0008] The beneficial effects of the utility model compared with the prior art are as follows:

[0009] The utility model is provided with a wire rope encoder (opening sensor) connected to a lead screw for measuring the displacement of the lead screw and accurately displaying the opening of the gate. At the same time, laser light curtain switches are arranged at the upper and lower limit positions of the lead screw to limit and protect the gate when it is fully opened and closed, ensuring the safe and reliable operation of the gate.

[0010] The monitoring system designed by the utility model consists of a PLC controller, an upper limit switch, a lower limit switch, a wire rope encoder (opening sensor), and an upper monitoring server. The digital input points of the PLC controller are respectively connected to the upper limit switch, the lower limit switch, and the wire rope encoder. The upper monitoring server establishes a communication connection with the PLC controller through an industrial Ethernet to display the opening of the gate in real time. Description of the Drawings

[0011] Figure 1 is a schematic structural diagram of the utility model;

[0012] The meanings of the reference numerals are as follows: 1, gate panel; 2, screw hoist; 3, lead screw; 4, lead screw protective cover; 5, upper limit switch; 6, lower limit switch; 7, wire rope encoder; 8, PLC controller; 9, upper monitoring server; 10, wire rope; 11, motor. Detailed Embodiment

[0013] The following further describes the utility model in conjunction with the drawings and the detailed embodiment.

[0014] As Figure 1 shown, a device for remotely displaying the opening of a flat gate includes a gate panel. Above the gate panel 1, a screw hoist 2 is provided. A lead screw 3 is screwed into the screw hole of the screw hoist 2. The bottom end of the lead screw 3 is fixedly connected to the gate panel 1. A lead screw protective cover 4 is sleeved on the outer periphery of the lead screw 3. The bottom surface of the lead screw protective cover 4 is fixedly connected to the top surface of the screw hoist 2. An upper limit switch 5 and a lower limit switch 6 are symmetrically arranged on the outer wall of the lead screw protective cover 4. Both the upper limit switch 5 and the lower limit switch 6 are laser light curtain switches. The upper limit switch 5 is arranged at the upper limit position of the lead screw protective cover 4 corresponding to the lead screw 3, and the lower limit switch 6 is arranged at the lower limit position of the lead screw protective cover 4 corresponding to the lead screw 3. Above the lead screw protective cover 4, a wire rope encoder 7 is provided. The wire rope 10 of the wire rope encoder 7 passes through the top surface of the lead screw protective cover 4 and is fixedly connected to the top end of the lead screw 3. The upper limit switch 5, the lower limit switch 6, and the wire rope encoder 7 are respectively connected to the PLC controller 8, and the PLC controller 8 is connected to the upper monitoring server 9. The central axes of the gate panel 1, the lead screw 3, the lead screw protective cover 4, and the wire rope 10 are on the same straight line.

[0015] The screw hoist 2 transmits power to the lead screw 3. The lead screw 3 makes a reciprocating up-and-down motion along the axis to control the opening degree of the gate 1. The rope-pull encoder 7 feeds back the displacement signal of the rope 10 to the PLC controller 8. The PLC controller 8 converts the displacement signal into the gate opening degree value and displays it on the monitoring screen of the upper-level monitoring server 9. When the lead screw 3 reaches the upper limit position, it blocks the laser beam of the upper limit switch 5 and sends an open-in-place signal back to the PLC controller 8; when the lead screw 3 reaches the lower limit position, it blocks the laser beam of the lower limit switch 6 and sends a close-in-place signal back to the PLC controller 8; when the gate opening degree reaches 100% or the lead screw 3 reaches the upper limit position, the interlocked PLC controller 8 controls the motor 11 to stop the opening action of the gate; when the valve opening degree reaches 0% or the lead screw 3 reaches the lower limit position, the interlocked PLC controller 8 controls the motor 11 to stop the closing action of the gate. When reaching the limit position or the alarm value set by the user, the upper-level monitoring server 9 gives an audible alarm to remind the on-duty personnel to pay attention to the gate opening situation.

Claims

1. A device for remotely displaying the opening degree of a flat gate, comprising a gate panel, characterized in that: Above the said gate plate (1), a screw hoist (2) is provided. A lead screw (3) is screwed into the screw hole of the screw hoist (2). The bottom end of the lead screw (3) is fixedly connected to the gate plate (1). A lead screw protective cover (4) is sleeved on the outer periphery of the lead screw (3). The bottom surface of the lead screw protective cover (4) is fixedly connected to the top surface of the screw hoist (2). An upper limit switch (5) and a lower limit switch (6) are symmetrically arranged on the outer wall of the lead screw protective cover (4) respectively. Above the lead screw protective cover (4), a rope-pull encoder (7) is provided. The rope (10) of the rope-pull encoder (7) passes through the top surface of the lead screw protective cover (4) and is fixedly connected to the top end of the lead screw (3). The upper limit switch (5), the lower limit switch (6) and the rope-pull encoder (7) are respectively connected to a PLC controller (8), and the PLC controller (8) is connected to an upper monitoring server (9).

2. The device for remotely displaying the opening degree of a flat gate as claimed in claim 1, wherein: Both the upper limit switch (5) and the lower limit switch (6) adopt laser opposed switches. The upper limit switch (5) is arranged at the upper limit position of the lead screw protective cover (4) corresponding to the lead screw (3), and the lower limit switch (6) is arranged at the lower limit position of the lead screw protective cover (4) corresponding to the lead screw (3).

3. The device for remotely displaying the opening degree of a flat gate according to claim 2, characterized in that: The central axes of the gate plate (1), the lead screw (3), the lead screw protective cover (4) and the rope (10) are on the same straight line.

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