Multi-stage automatic locking and unlocking device and method for curved working door

Abstract

The present invention provides a multi-stage automatic locking and unlocking device and method for a curved working door. The device includes a curved working door locking mechanism and an elastic blocking rod mechanism for locking the curved working door in a corresponding position. The curved working door locking mechanism includes a gate pier locking seat, a hanger, a lifting lug hanging rod, a locking shaft, and a hanger driving mechanism. The gate pier locking seat is fixed to the gate pier, and the locking shaft is installed inside the gate pier locking seat. The upper portion of the hanger is an annular structure that is sleeved on the locking shaft. Below the hanger annular structure is a hook structure that is hooked to the lifting lug hanging rod. The elastic blocking rod mechanism is used to drive the hanger driving mechanism as the curved working door moves up and down, and the hanger driving mechanism drives the hanger to move axially along the locking shaft. The present invention can open and close the curved working door to different heights and automatically lock it in the corresponding position according to different task requirements when the curved working door is discharging flood water or undergoing maintenance, thereby reducing dependence on a hydraulic hoist or a fixed winch.

Description

Technical Field

[0001] The present invention relates to the field of curved working doors in water conservancy and hydropower projects, and in particular to a multi-stage automatic locking and unlocking device and method for curved working doors. Background Art

[0002] In the water conservancy, hydropower and water transport engineering industries, curved working doors are widely used as working gates in discharge structures due to their simple structure, small opening and closing force, easy operation and good water flow conditions. Curved working doors are generally operated by hydraulic opening and closing machines or fixed winches.

[0003] During flood discharge or flow regulation, the curved working door maintains different openings (partial or full). Maintaining these openings requires a hydraulic hoist or fixed winch to maintain continuous operation. During maintenance and repair of the curved working door, the hydraulic hoist or fixed winch is used to lift the curved working door above the opening and lock it. Generally, a locking hole is set on the side column of the curved working door, and a pin is used for manual locking. The setting of the locking hole is limited by the structure of the curved working door, and usually only one locking position is set.

[0004] The existing arc working door locking device usually has only one maintenance lock position and no working state locking gear. There are four defects: (1) Manual operation locking is inconvenient; (2) There are few locking gears, which makes it inconvenient to repair the arc working door. For example, when repairing the upper half of the arc working door, in order to prevent the upper half of the arc working door from exceeding the opening, the locking gear should be in the upper half of the arc working door; when repairing the lower half of the arc working door, the lower half should exceed the opening, and the locking gear should be in the lower half of the arc working door. (3) There is no locking gear for different working states. The hydraulic gate hoist or fixed winch continues to bear the load, which may cause the entire machine body to shake in severe cases, posing a major safety hazard. (4) When the arc working door is in working state, the hydraulic gate hoist or fixed winch cannot be repaired.

[0005] Based on the above problems, it is necessary to provide an automatic locking and unlocking device and method for a curved working door that can be adapted to different opening requirements. Summary of the Invention

[0006] To address the aforementioned shortcomings of the prior art, the present invention aims to provide a multi-stage automatic locking and unlocking device and method for a curved working door. This device can automatically lock the curved working door in place at different heights, depending on the specific task requirements, during flood discharge or maintenance. This reduces reliance on hydraulic hoists or fixed winches, providing a double safeguard and extending the service life of these hoists. Furthermore, the device automatically unlocks the door after completing the task. This reduces manual labor and automates the entire process.

[0007] The present invention adopts the following technical solutions to solve the above technical problems:

[0008] The locking mechanism of the present invention is a plurality of automatic locking mechanisms, and the ...

[0009] Furthermore, the hanger driving mechanism includes a Y-shaped connecting rod, an L-shaped crank, a connecting rod slider hinge shaft, a crank-connecting rod hinge shaft, and a crank hinge shaft. One end of the Y-shaped connecting rod is hinged to the hanger through the connecting rod slider hinge shaft, and the other end is hinged to the L-shaped crank through the crank-connecting rod hinge shaft. The inflection point of the L-shaped crank is connected to the gate pier locking seat through the crank hinge shaft; the gate pier locking seat includes a concave groove having a first end face and a second end face, and the L-shaped crank rotates with its inflection point as the center of the circle, driving the Y-shaped connecting rod to move in space, and the hanger then moves axially on the locking shaft, that is, the range of movement of the hanger is between the first end face and the second end face; the elastic blocking rod mechanism drives the L-shaped crank to rotate as the arc working door moves.

[0010] Furthermore, the elastic blocking rod mechanism includes a blocking rod, a U-shaped limiter, and a spring. The U-shaped limiter is fixed on the panel of the arc-shaped working door. One end of the spring is connected to the U-shaped limiter, and the other end is connected to the blocking rod.

[0011] Furthermore, in the initial state, the spring is in a free state, and a part of the baffle rod is in the U-shaped limiter. When the baffle rod is squeezed by external force, the spring is forced to contract, and the baffle rod moves in the U-shaped limiter; when the baffle rod is not acted upon by external force, the spring recovers, and the baffle rod returns to its initial position; the baffle rod of the elastic baffle rod mechanism comes into contact with the L-shaped crank as the arc-shaped working door moves.

[0012] Furthermore, when the arc-shaped working gate is in the water-retaining working state, the bottom is in contact with the flow channel and the two sides are in contact with the gate piers, forming a closed space.

[0013] Furthermore, an arm hinge support is provided behind the arc working door. When the arc working door is discharging flood or undergoing maintenance, the arc working door is rotated around the arm hinge support by the operation of a hydraulic opening and closing machine or a fixed winch. When the arc working door rotates to an appropriate height, the arc working door is locked in the corresponding position by the arc working door locking mechanism.

[0014] A multi-stage automatic locking and unlocking method for a curved working door is implemented using the above-mentioned device, and the method comprises the following steps:

[0015] In the initial state of the arc-shaped working door locking mechanism, the side surface of the hanging part is in contact with the first end surface of the gate pier locking seat and is in the left limit position, and the L-shaped crank is in the upper limit position;

[0016] The curved working door moves upward, and the hanging ear and elastic blocking rod mechanism fixed on the curved working door move accordingly, and the blocking rod of the elastic blocking rod mechanism comes into contact with the L-shaped crank and passes the upper limit position;

[0017] The arc-shaped working door starts to move downward, and the blocking rod contacts the L-shaped crank. As the arc-shaped working door rotates, the L-shaped crank rotates with the inflection point as the center under the extrusion force of the blocking rod. The Y-shaped connecting rod also moves accordingly, driving the hanger to move axially on the locking shaft until the hanger fits into the second end face of the gate pier locking seat and reaches the right limit position. At this time, the L-shaped crank is in the lower limit position, and the blocking rod compresses the spring and passes the lower limit position.

[0018] The curved working door continues to move downward until the lifting lug and the hook structure of the hanger are fully in contact to complete the automatic locking function. The curved working door is locked by the curved working door locking mechanism, and the hydraulic hoist or fixed winch stops working.

[0019] When the inspection is completed or the gate needs to be closed, the arc working door first moves upward under the action of the hydraulic hoist or fixed winch, the L-shaped crank rotates under the drive of the stop rod, and the Y-shaped connecting rod moves accordingly, driving the hanger to move axially on the locking shaft until the hanger fits with the first end face of the gate pier locking seat and reaches the left limit position. It will not affect the movement of the lifting ear and hanging rod, and the arc working door locking mechanism returns to the initial state, and the arc working door continues to move downward to complete the automatic unlocking function.

[0020] Compared with the prior art, the present invention adopts the above technical solution and has the following effects:

[0021] (1) According to different opening requirements such as flow regulation, the curved working door is opened and closed to different heights by a hydraulic hoist or a fixed winch, and automatically locked at the corresponding position, realizing the self-locking function in various opening states;

[0022] (2) When the curved working door is partially opened and locked, the hydraulic hoist or fixed winch can be switched to a non-working state, thereby reducing the load on the hydraulic hoist or fixed winch and effectively extending its service life;

[0023] (3) The curved working door can be locked at multiple openings. After locking, the hydraulic hoist or fixed winch can be inspected at any time, which is convenient for operation.

[0024] (4) The curved working door can be automatically locked and unlocked after completing the relevant functional requirements. The process is automated and does not require manual operation or additional tools for assistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the water-blocking state of the curved working door according to an embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of a partially opened curved working door according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the maintenance state of the curved working door according to an embodiment of the present invention;

[0028] Figure 4 for Figure 3 Part A in the middle is an enlarged three-dimensional view;

[0029] Figure 5 for Figure 4 Partial cross-section of section II;

[0030] Figure 6 for Figure 5 Front view of

[0031] Figure 7 for Figure 6 Cross-sectional view of part B;

[0032] Figure 8 for Figure 7 Partial cross-section of section II-II;

[0033] Figure 9 This is a schematic diagram of the operating principle of the locking mechanism;

[0034] Figure 10 for Figure 9 Three-dimensional schematic diagram of the middle c position;

[0035] Figure 11 for Figure 10 Front view of

[0036] Figure 12 for Figure 9 Three-dimensional schematic diagram of the middle d position;

[0037] Figure 13 for Figure 12 Front view of

[0038] Figure 14 for Figure 9 Three-dimensional schematic diagram of position b in the middle;

[0039] Figure 15 for Figure 14 Front view of

[0040] Figure 16 A three-dimensional schematic diagram of a locked state of a curved working door according to an embodiment of the present invention;

[0041] Figure 17 for Figure 16 Front view of

[0042] Figure 18 for Figure 9 Three-dimensional schematic diagram of position a in the middle;

[0043] Figure 19 for Figure 18 Front view of

[0044] Figure 20 for Figure 9 Three-dimensional schematic diagram of the middle c position;

[0045] Figure 21 for Figure 20 Front view of

[0046] Figure 22 This is a schematic diagram of the unlocked state of the curved working door according to an embodiment of the present invention;

[0047] Figure 23 This is a schematic diagram of the assembly of the locking mechanism for the curved working door according to an embodiment of the present invention;

[0048] Figure 24 The figure is a schematic diagram of the arrangement of the hanging ear and hanging rod and the elastic blocking rod mechanism on the curved working door panel according to an embodiment of the present invention.

[0049] In the figure: 1—flow channel, 2—gate pier, 3—arc-shaped working door, 3.1—arc-shaped working door panel, 4—support arm hinge support, 5—arc-shaped working door locking mechanism, 5.1—gate pier locking seat, 5.2—hanging part, 5.3—Y-shaped connecting rod, 5.4—L-shaped crank, 5.5—connecting rod slider hinge shaft, 5.6—crank connecting rod hinge shaft, 5.7—crank hinge shaft, 5.8—hanging ear hanging rod, 5.9—locking shaft, 6—elastic blocking rod mechanism, 6.1—blocking rod, 6.2—U-shaped limiter, 6.3—spring. DETAILED DESCRIPTION

[0050] The technical solution of the present invention is further described in detail below with reference to the accompanying drawings, but the scope of protection claimed is not limited to the description.

[0051] See also Figures 1 to 4 An embodiment of the present invention provides a multi-stage automatic locking and unlocking device for an arc-shaped working door, including a flow channel 1, a gate pier 2, an arc-shaped working door 3, an arm hinge support 4, a arc-shaped working door locking mechanism 5 and an elastic blocking rod mechanism 6.

[0052] like Figure 1 As shown, the gate is subjected to a large radial force under the impact of the huge water pressure. A support arm hinge support 4 is provided behind the arc-shaped working gate 3 to support the force of the arc-shaped working gate 3 in this direction. When discharging flood water or performing maintenance, the arc-shaped working gate 3 rotates around the support arm hinge support 4 through the operation of a hydraulic hoist or a fixed winch, rotates to a suitable height, and is locked in the corresponding position by the arc-shaped working gate locking mechanism 5, as shown in FIG. Figure 2 、 Figure 3 shown.

[0053] like Figure 4 、 Figure 5 、 Figure 6 As shown, the curved working door locking mechanism 5 includes a gate pier locking seat 5.1, a hanging member 5.2, a Y-shaped connecting rod 5.3, an L-shaped crank 5.4, a connecting rod slider hinge shaft 5.5, a crank connecting rod hinge shaft 5.6, a crank hinge shaft 5.7, a lifting lug hanging rod 5.8, and a locking shaft 5.9. The elastic blocking rod mechanism 6 includes a blocking rod 6.1, a U-shaped stopper 6.2, and a spring 6.3. The lifting lug hanging rod 5.8 and the elastic blocking rod mechanism 6 are fixed to the panel of the curved working door 3.

[0054] like Figure 7 、 Figure 8 As shown, the U-shaped stopper 6.2 is fixed to the panel of the curved working door 3. One end of the spring 6.3 is connected to the U-shaped stopper 6.2, and the other end is connected to the stopper 6.1. In the initial state, the spring 6.3 is in a free state, and the stopper 6.1 is partially inside the U-shaped stopper 6.2. When the stopper 6.1 is squeezed by an external force, the spring 6.3 is forced to contract, and the stopper 6.1 moves inside the U-shaped stopper 6.2. When the stopper 6.1 is no longer subject to external force, the spring 6.3 returns to its original position, and the stopper 6.1 returns to its original position.

[0055] The pier locking seat 5.1 is bolted to the pier 2. The locking shaft 5.9 is mounted inside the pier locking seat 5.1 and secured at its end with an end cap and bolts. The upper portion of the hanger 5.2 is an annular structure that fits over the locking shaft 5.9 and is axially movable along the shaft. Below the annular structure of the hanger 5.2 is a hook structure that connects to the lifting lug and hanging rod 5.8. One end of the Y-shaped connecting rod 5.3 is hinged to the hanger 5.2 via the connecting rod slider hinge axis 5.5, and the other end is hinged to the L-shaped crank 5.4 via the crank-connecting rod hinge axis 5.6. The inflection point O of the L-shaped crank 5.4 is connected to the pier locking seat 5.1 via the crank hinge axis 5.7.

[0056] like Figure 9 As shown, the concave groove structure of the pier locking seat 5.1 has two end faces, A and B. The L-shaped crank 5.4 rotates around its inflection point O, driving the Y-shaped connecting rod 5.3 to move in space. The pendant 5.2 then moves axially on the locking shaft 5.9. The range of motion of the pendant 5.2 is between the two end faces A and B. The operating range is shown by the solid and dashed lines in the figure. In these two states, there are four key positions: a, b, c, and d.

[0057] The initial state of the arc working door locking mechanism 5 is as follows Figure 9 As shown by the solid line, the side of the hanging piece 5.2 is in contact with the A surface. As the arc working door 3 moves upward, the hanging ear 5.8 and the elastic blocking rod mechanism 6 fixed on the arc working door 3 are operated accordingly. When the elastic blocking rod mechanism 6 moves to Figure 9 At point c, the stopper 6.1 comes into contact with the L-shaped crank 5.4. Figure 10 、 Figure 11 As shown, at this time, the hanging part 5.2 is attached to one end face A of the gate pier locking seat 5.1, reaching the left limit position, and the L-shaped crank 5.4 is at the upper limit position. As the arc-shaped working door 3 continues to move upward, the blocking rod 6.1 is squeezed by the L-shaped crank 5.4, the spring 6.3 contracts, and the blocking rod 6.1 passes the position of point C. After passing this position, the blocking rod 6.1 returns to the normal position under the action of the spring 6.3. At this time, the elastic blocking rod mechanism 6 is in Figure 9 At point d, the arc-shaped working door 3 begins to move downward, and the stop rod 6.1 contacts the L-shaped crank 5.4. Figure 12 、 Figure 13 As shown, as the arc-shaped working door 3 rotates, the L-shaped crank 5.4 rotates with the inflection point O as the center under the extrusion force of the blocking rod 6.1, and the Y-shaped connecting rod 5.3 also moves, driving the hanging part 5.2 to move axially on the locking shaft 5.9 (from A to B). Figure 9 When the midpoint b is in position, Figure 14 、 Figure 15As shown, the other end face of the hanging piece 5.2 is in contact with one end face B of the gate pier locking seat 5.1, reaching the right limit position, and the L-shaped crank 5.4 is in the lower limit position. The blocking rod 6.1 compresses the spring 6.3, and through this point, the arc-shaped working door 3 continues to move downward until the hanging ear hanging rod 5.8 is completely in contact with the hook structure of the hanging piece 5.2, as shown in FIG. Figure 16 、 Figure 17 The curved working door 3 is locked by the curved working door locking mechanism 5, and the hydraulic hoist or fixed winch is out of working state, which can effectively extend its service life and improve the safety of the entire system.

[0058] When the inspection is completed or the gate needs to be closed, the arc working door 3 first moves upward under the action of the hydraulic hoist or fixed winch, such as Figure 18 、 Figure 19 In the direction indicated by the middle arrow, the L-shaped crank 5.4 rotates under the drive of the blocking rod 6.1, and the Y-shaped connecting rod 5.3 moves accordingly, driving the hanging part 5.2 to move axially on the locking shaft 5.9 (from B to A). Figure 9 When the midpoint c is in position, Figure 20 、 Figure 21 As shown, the hanging piece 5.2 is fitted on one end face A of the gate pier locking seat 5.1 and reaches the left limit position, which will not affect the movement of the hanging ear and hanging rod 5.8, and the arc working door locking mechanism 5 returns to the initial state. The arc working door 3 continues to move downward, as shown in FIG. Figure 22 、 Figure 23 As shown, the automatic unlocking function is completed.

[0059] like Figure 24 As shown, the hanging ear rod 5.8 and the elastic blocking rod mechanism 6 are arranged at multiple positions on the curved working door panel 3.1, that is, there are multiple locking positions. The curved working door 3 can be rotated to different heights and locked according to actual needs, realizing the function of multi-gear locking.

[0060] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A multi-stage automatic locking and unlocking device for a curved working door, characterized in that: include: The curved working door locking mechanism and the elastic blocking rod mechanism are used to lock the curved working door in the corresponding position. The curved working door locking mechanism includes a gate pier locking seat, a hanger, a lifting ear hanging rod, a locking shaft, and a hanger driving mechanism. The gate pier locking seat is fixed on the gate pier, and the locking shaft is installed inside the gate pier locking seat. The upper part of the hanger is an annular structure, which is sleeved on the locking shaft and can move axially along the locking shaft. The lower part of the hanger annular structure is a hook structure hooked with the lifting ear hanging rod; the lifting ear hanging rod and the elastic blocking rod mechanism are fixed at multiple positions on the panel of the curved working door to form multiple locking positions, and the elastic blocking rod mechanism is used to drive the hanger driving mechanism as the curved working door moves up and down. The hanger driving mechanism drives the hanger to move axially along the locking shaft, so that after the hanger moves to the lifting ear hanging rod, it is locked with the lifting ear hanging rod through the hook structure on the hanger, or the hanger is removed from the lifting ear hanging rod to achieve unlocking; The hanger driving mechanism includes a Y-shaped connecting rod, an L-shaped crank, a connecting rod slider hinge shaft, a crank-connecting rod hinge shaft, and a crank hinge shaft. One end of the Y-shaped connecting rod is hinged to the hanger through the connecting rod slider hinge shaft, and the other end is hinged to the L-shaped crank through the crank-connecting rod hinge shaft. The inflection point of the L-shaped crank is connected to the gate pier locking seat through the crank hinge shaft; the gate pier locking seat includes a concave groove with a first end face and a second end face. The L-shaped crank rotates with its inflection point as the center of the circle, driving the Y-shaped connecting rod to move in space, and the hanger then moves axially on the locking shaft, that is, the range of movement of the hanger is between the first end face and the second end face; the elastic blocking rod mechanism drives the L-shaped crank to rotate as the arc working door moves; The elastic blocking rod mechanism includes a blocking rod, a U-shaped limiting piece, and a spring. The U-shaped limiting piece is fixed on the panel of the arc-shaped working door. One end of the spring is connected to the U-shaped limiting piece, and the other end is connected to the blocking rod.

2. The multi-stage automatic locking and unlocking device for a curved working door according to claim 1, characterized in that: In the initial state, the spring is in a free state, and a part of the baffle rod is in the U-shaped limiter. When the baffle rod is squeezed by external force, the spring is forced to contract, and the baffle rod moves in the U-shaped limiter; when there is no external force acting on the baffle rod, the spring recovers and the baffle rod returns to its initial position; the baffle rod of the elastic baffle rod mechanism comes into contact with the L-shaped crank as the arc-shaped working door moves.

3. The multi-stage automatic locking and unlocking device for a curved working door according to claim 1, characterized in that: When the curved working gate is in the water-retaining working state, its bottom contacts the flow channel and its two sides contact the gate piers, forming a confined space.

4. The multi-stage automatic locking and unlocking device for a curved working door according to claim 1, characterized in that: An arm hinge support is set behind the curved working door. When the curved working door is discharging floods or undergoing maintenance, the curved working door is rotated around the arm hinge support through the operation of a hydraulic hoist or a fixed winch. When it rotates to an appropriate height, the curved working door is locked in the corresponding position by the curved working door locking mechanism.

5. A multi-stage automatic locking and unlocking method for a curved working door, characterized in that: The method is carried out using the device according to any one of claims 1 to 4, and comprises the following steps: In the initial state of the arc-shaped working door locking mechanism, the side surface of the hanging part is in contact with the first end surface of the gate pier locking seat and is in the left limit position, and the L-shaped crank is in the upper limit position; The curved working door moves upward, and the hanging ear and elastic blocking rod mechanism fixed on the curved working door move accordingly, and the blocking rod of the elastic blocking rod mechanism comes into contact with the L-shaped crank and passes the upper limit position; The arc-shaped working door starts to move downward, and the blocking rod contacts the L-shaped crank. As the arc-shaped working door rotates, the L-shaped crank rotates with the inflection point as the center under the extrusion force of the blocking rod. The Y-shaped connecting rod also moves accordingly, driving the hanger to move axially on the locking shaft until the hanger fits into the second end face of the gate pier locking seat and reaches the right limit position. At this time, the L-shaped crank is in the lower limit position, and the blocking rod compresses the spring and passes the lower limit position. The curved working door continues to move downward until the lifting lug and the hook structure of the hanger are fully in contact to complete the automatic locking function. The curved working door is locked by the curved working door locking mechanism, and the hydraulic hoist or fixed winch stops working. When the inspection is completed or the gate needs to be closed, the arc working door first moves upward under the action of the hydraulic hoist or fixed winch, the L-shaped crank rotates under the drive of the stop rod, and the Y-shaped connecting rod moves accordingly, driving the hanger to move axially on the locking shaft until the hanger fits with the first end face of the gate pier locking seat and reaches the left limit position. It will not affect the movement of the lifting ear and hanging rod, and the arc working door locking mechanism returns to the initial state, and the arc working door continues to move downward to complete the automatic unlocking function.

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