Steel gate mechanical locking mechanism

Abstract

The invention belongs to the technical field of gate locking mechanisms, and discloses a steel gate mechanical locking mechanism which comprises a moving rod installed on a gate plate and a fixing block installed on a gate vertical rail, a clamping block is hinged to the moving rod and provided with a clamping opening, and in the gate lifting process, when the clamping block crosses the fixing block, the clamping opening is opened, and the clamping opening is closed. The clamping opening is clamped with the fixing block and prevents the door plate from descending, and the clamping opening is separated from the fixing block when the clamping block crosses the fixing block. The locking and unlocking device is simple and reasonable in structure, simple and rapid in locking and unlocking operation, capable of improving the working efficiency of water conservancy work, very simple in structure, low in operation and maintenance cost and suitable for being widely used.

Description

Technical Field

[0001] The invention belongs to the technical field of gate locking mechanisms, and in particular relates to a mechanical locking mechanism for a steel gate. Background Art

[0002] Steel gates are commonly used water blocking and water stopping equipment in water supply and drainage projects, water conservancy and hydropower projects. They are composed of door frames, gate plates, sealing rings and adjustable wedge-shaped pressure blocks. After the steel gates are worn out after long-term use, their sealing surfaces can be adjusted by the wedge-shaped pressure blocks to ensure normal operation. Steel gates are made of high-quality steel plates as the base material, and the surface is sandblasted and rust-removed and hot-sprayed with zinc by using rubber water-stopping and anti-corrosion methods. The steel gates have reasonable and firm structures, strong wear and corrosion resistance, reliable performance, and are easy to install, adjust, use and maintain.

[0003] After the steel gate is raised, the door plate needs to be stabilized at a certain height. The Chinese invention patent with the publication number CN107165131 B discloses a locking and limiting device for the gate. When the gate needs to be locked, the rocker arm is rotated to the locking position, so that the two cams rotate synchronously, and the convex surfaces of the two cams rotate from the horizontal position to the vertical position, pushing the locking block to rise, and the locking block enters the rotation space of the locking body to limit the rotation of the locking body. The lock tongue of the locking body bears the deadweight load of the gate and transmits it to the locking block and the machine base through the locking connector of the locking body, so as to realize the locking operation of the gate. After the locking operation is completed, the rocker arm is released. At this time, under the action of the arc groove at the lower end of the locking block and the deadweight of the locking block, the convex surfaces of the two cams continue to move closer to the middle of the arc groove, and cannot automatically return to the initial horizontal state. The locked state is stable.

[0004] The structure of this solution is relatively complex and requires more corresponding operations, which not only affects work efficiency, but also the complex mechanical structure has a high failure rate in water environments and high operation and maintenance costs. Summary of the invention

[0005] In order to overcome the above technical problems, the present invention provides a simple-structured mechanical locking mechanism for a steel gate, which does not require additional operations when locking the door panel, and only requires controlling the lifting and lowering of the door panel to complete locking and unlocking.

[0006] The present invention adopts the following technical solutions:

[0007] A mechanical locking mechanism for a steel gate comprises a moving rod installed on a gate panel and a fixed block installed on a vertical rail of the gate. The moving rod is hinged with a clamping block, and the clamping block has a clamping interface. During the gate raising process, when the clamping block crosses over the fixed block, the clamping interface is clamped with the fixed block and prevents the gate panel from descending. As the clamping block crosses over the fixed block, the clamping interface detaches from the fixed block.

[0008] Preferably, the moving rod is located on the back water surface of the door panel, the fixed block is located on the back water surface of the vertical rail, the end of the clamping block is hinged to the moving rod, the hinge axis is horizontal and perpendicular to the door panel, a coil spring is arranged between the clamping block and the moving rod, the coil spring maintains the clamping block lifted outward, the clamping interface is located at the lifted end of the clamping block, and in the lifted state, the clamping interface is further outward than the inner side surface of the fixed block, and the top of the inner side surface of the fixed block has a limiting edge; when the clamping block crosses the fixed block during the gate raising process, the clamping block swings down relative to the moving block and the clamping interface is stuck at the limiting edge. At this moment, the fixed block prevents the clamping block from descending through the limiting edge. As the gate continues to be raised, the clamping block completely passes over the fixed block and then returns to the lifted state.

[0009] Preferably, a plurality of the fixing blocks are arranged in a vertical direction.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] The present invention is provided with a movable rod, a clamping block and a fixed block. The clamping block can automatically cooperate with the fixed block to form a clamping connection as the door panel rises, so as to prevent the door panel from descending in this clamping state; the clamping block can automatically detach from the fixed block and release the clamping connection by continuing to raise the door panel, and the door panel can be lowered smoothly at this time; the locking and unlocking operations are simple and quick, which can improve the work efficiency of water conservancy work, and the structure is very simple, the operation and maintenance cost is low, and it is suitable for wide use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is an overall schematic diagram of the installation state of the present invention;

[0013] Figure 2 It is a schematic diagram of the working steps of the present invention.

[0014] Description of reference numerals:

[0015] 1. Door panel; 2. Moving rod; 3. Card block; 31. Card interface; 4. Fixed block; 41. Limiting edge; 5. Coil spring. DETAILED DESCRIPTION

[0016] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. Unless otherwise specified, the raw materials and equipment used can be purchased from the market or are commonly used in the art. The methods in the embodiments are conventional methods in the art unless otherwise specified. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0017] See also Figure 1 ,like Figure 1As shown, a mechanical locking mechanism for a steel gate comprises a moving rod 2 installed on the back surface of a gate panel 1 (the back of the water-facing surface) and a fixed block 4 installed on the back surface of a vertical rail of the gate. The moving rod 2 is hinged with a clamping block 3, the end of the clamping block 3 is hinged to the moving rod 2, the hinge axis is horizontal and perpendicular to the door panel 1, a coil spring 5 is arranged between the clamping block 3 and the moving rod 2, the coil spring 5 surrounds the hinge axis, and the coil spring 5 maintains the clamping block 3 raised toward the outside of the gate, a clamping interface 31 is located at the raised end of the clamping block 3, the clamping interface 31 is a right angle when viewed from the front, and is further outward than the inner side surface of the fixed block 4 in the raised state, the fixed block 4 is a rectangle when viewed from the front, and the top of the inner side surface of the fixed block 4 (i.e., the inner upper corner of the rectangle) is a limiting edge 41 ( Figure 2 a); During the gate raising process, when the clamping block 3 crosses the fixed block 4, the clamping block 3 swings down relative to the moving block, and the clamping interface 31 is clamped at the limit edge 41 under the reset action of the coil spring 5 to form a clamping connection, and the clamping block 3 is in an inclined state ( Figure 2 b), at this moment, the fixed block 4 prevents the clamping block 3 from descending through the limiting edge 41. As the gate continues to be raised, the clamping block 3 completely passes over the fixed block 4 and resumes the raised state under the reset action of the coil spring 5 ( Figure 2 c), then the door panel 1 can be lowered smoothly.

[0018] In order to flexibly adjust the lifting height of the door panel 1, a plurality of fixing blocks 4 are arranged in the vertical direction. By matching the clamping block 3 with the fixing blocks 4 of different heights, the door panel 1 can be controlled at different specific heights.

[0019] How to use the mechanical locking mechanism of the steel gate:

[0020] By default, the door panel 1 is in a low position. When the gate needs to be raised, the door panel 1 is lifted upward until the clamping block 3 is close to a suitable fixed block 4. As the lifting is carried out, the clamping block 3 abuts against the fixed block 4 and swings downward at a certain angle due to obstruction, so that the clamping block 3 can pass through the fixed block 4. When it is about to pass over the fixed block 4, the inner wall of the clamping interface 31 contacts the fixed block 4. At this time, the lifting is stopped and the lowering action is performed. Under the resetting action of the coil spring 5, the right-angle clamping interface 31 of the clamping block 3 clamps the main limit edge 41 to form a lock, thereby preventing the door panel 1 from descending. When the door panel 1 needs to be lowered, the door panel 1 is first lifted up for a distance so that the clamping block 3 is completely separated from the fixed block 4 and restored to the raised state, and then the door panel 1 is lowered. During the lowering process, the clamping block 3 passes over the fixed block 4.

[0021] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the above embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A mechanical locking mechanism for a steel gate, characterized in that: It includes a moving rod installed on the gate door panel and a fixed block installed on the gate vertical rail. The moving rod is hinged with a clamping block, and the clamping block has a clamping interface. During the gate raising process, when the clamping block crosses over the fixed block, the clamping interface is clamped with the fixed block and prevents the door panel from descending. As the clamping block crosses over the fixed block, the clamping interface is separated from the fixed block.

2. A mechanical locking mechanism for a steel gate according to claim 1, characterized in that: The moving rod is located on the back water surface of the door panel, the fixed block is located on the back water surface of the vertical rail, the end of the clamping block is hinged to the moving rod, the hinge axis is horizontal and perpendicular to the door panel, a coil spring is arranged between the clamping block and the moving rod, the coil spring maintains the clamping block raised outward, the clamping interface is located at the raised end of the clamping block, and in the raised state, the clamping interface is further outward than the inner side surface of the fixed block, and the top of the inner side surface of the fixed block has a limiting edge; when the clamping block crosses the fixed block during the gate raising process, the clamping block swings down relative to the moving block and the clamping interface is stuck at the limiting edge. At this moment, the fixed block prevents the clamping block from descending through the limiting edge. As the gate continues to be raised, the clamping block completely passes over the fixed block and then resumes the raised state.

3. A mechanical locking mechanism for a steel gate according to claim 1, characterized in that: A plurality of the fixing blocks are arranged in a vertical direction.

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