Plane gate opening and closing device for large-scale water conservancy project

Abstract

The utility model discloses a plane gate opening and closing device for a large-scale water conservancy project, which comprises a plurality of pairs of opening and closing mechanisms corresponding to plane gates, mounting bent frames arranged at the tops of gate piers and racks, and two opening and closing mechanisms arranged back to back are arranged on each rack. The opening and closing mechanism comprises a motor, a speed reducer, a winding drum rotationally arranged on the rack, a cantilever support, a fixed pulley assembly and a movable pulley assembly, the cantilever support extends to the position above the gate, and the fixed pulley assembly is arranged at the top of the cantilever support; the winding drum is provided with a first winding section and a second winding section, and the winding direction of the steel wire rope led out of the first winding section is opposite to that of the steel wire rope led out of the second winding section. The opening and closing mechanisms are installed on the gate piers on the two sides of the gate, the two opening and closing mechanisms are installed on each gate pier in a back-to-back mode, the cantilever supports of the two opening and closing mechanisms on the gate piers obliquely extend towards the two sides respectively, compact installation of the opening and closing mechanisms is achieved, and the windward area of a building on a dam is reduced.

Description

Technical Field

[0001] The utility model relates to the field of water conservancy projects, in particular to a plane gate hoisting device for large water conservancy projects. Background Art

[0002] As a building for blocking water, waves and taking water, the gate is an indispensable device in water conservancy and hydropower projects and river development projects. At present, the span of many large water conservancy projects (such as dams) is often relatively large. To meet the project requirements, there are often multiple plane gates installed side by side on these large-span dams, and hoisting machines are used to open the plane gates. Most of the hoisting machines on existing large-span dams are installed directly above the plane gates, which require a large hoisting operation space to meet the gate hoisting requirements. As a result, the installation height of the hoisting machine is relatively high, the space utilization rate is low, and the construction difficulty is great. Summary of the Invention

[0003] In view of this, the utility model provides a plane gate hoisting device for large water conservancy projects.

[0004] To achieve the above object, the utility model adopts the following technical solutions:

[0005] The plane gate hoisting device for large water conservancy projects of the utility model includes multiple pairs of hoisting mechanisms corresponding to the plane gates, and further includes installation bent frames arranged on the top of each pier and frames fixed on the top of each installation bent frame. Each of the frames has two of the hoisting mechanisms arranged back to back;

[0006] Each hoisting mechanism includes a motor, a reducer, a drum rotatably arranged on the frame, a cantilever bracket fixed on the frame, and a fixed pulley assembly and a movable pulley assembly cooperating with a steel wire rope. The cantilever bracket extends above one end of the gate, and the fixed pulley assembly is arranged on the top of the cantilever bracket;

[0007] Wherein, the drum has a first winding section and a second winding section, and the winding directions of the steel wire ropes led out from the first winding section and the second winding section are opposite.

[0008] The beneficial effects are as follows: The utility model installs the hoisting mechanisms on the piers on both sides of the gate, and two hoisting mechanisms are installed back to back on each pier. The cantilever brackets of the two hoisting mechanisms on the pier extend obliquely to both sides, realizing the compact installation of the hoisting mechanisms, and to a certain extent reducing the installation height of the installation bent frame, reducing the windward area of the buildings on the dam, thereby reducing the construction risk and construction difficulty and improving the construction efficiency.

[0009] Preferably, the fixed pulley assembly includes a balance pulley, a plurality of fixed pulleys and two guide pulleys. The balance pulley is located in the middle, and the fixed pulleys and guide pulleys are arranged in sequence from the balance pulley to both sides.

[0010] Preferably, the plane gate hoisting device of the present invention further includes an electric hoist for hoisting the maintenance gate; corresponding front and rear tracks are arranged between two adjacent installation bent frames, and at least one electric hoist is slidably arranged on each track to meet the hoisting requirements of the maintenance gate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the present invention.

[0012] Figure 2 is Figure 1 a schematic diagram of one of the plane gates and the hoisting mechanism in

[0013] Figure 3 is Figure 2 a schematic diagram of two hoisting mechanisms arranged back to back on one pier in

[0014] Figure 4 is a schematic diagram of the wire rope winding of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] The following will describe in detail the embodiments of the present invention with reference to the drawings. These embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation manners and specific operation processes are given. However, the protection scope of the present invention is not limited to the following embodiments.

[0016] It should be noted that in the description of the present invention, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0017] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected" and "connected" may be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood through specific situations.

[0018] Such as Figures 1-3As shown in the figure, the present utility model proposes a hoisting device for a plane gate 1 in a large-scale water conservancy project, which includes multiple pairs of hoisting mechanisms 2 corresponding to the plane gate 1, mounting bent frames 4 provided on the top of each pier 3, and a machine frame 5 fixed on the top of each mounting bent frame 4. The machine frame 5 is welded to the top steel plate of the mounting bent frame 4; two hoisting mechanisms 2 arranged back to back are installed on each machine frame 5. Each hoisting mechanism 2 includes a motor 2.1, a reducer 2.2, a drum 2.3 rotatably arranged on the machine frame 5, a cantilever bracket 2.4 fixed on the machine frame 5, and a fixed pulley assembly 2.5 and a movable pulley assembly 2.6 cooperating with a steel wire rope. The cantilever bracket 2.4 extends above one end of the gate, and the fixed pulley assembly 2.5 is arranged on the top of the cantilever bracket 2.4;

[0019] The drum 2.3 has a first winding section and a second winding section. The winding directions of the steel wire ropes led out from the first winding section and the second winding section are opposite, so that the steel wire ropes on the first winding section and the second winding section are retracted and released during the working process, thereby meeting the hoisting requirements of the plane gate 1.

[0020] Combined with Figure 2 it can be seen that the fixed pulley assembly 2.5 includes a balance pulley 2.5a mounted on the mounting shaft at the top of the cantilever bracket 2.4, four fixed pulleys 2.5b, and two guide pulleys 2.5c. The balance pulley 2.5a is located in the middle of the mounting shaft. From the balance pulley 2.5a to both ends of the mounting shaft, there are fixed pulleys 2.5b (two are installed) and guide pulleys 2.5c in sequence. Correspondingly, the movable pulley assembly 2.6 has six movable pulleys 2.6. The steel wire rope on the first winding section is introduced from the upper part of one of the guide pulleys, and the steel wire rope on the second winding section is introduced from the lower part of the other guide pulley. After being guided by the guide pulley 2.5c, the steel wire rope is wound in the manner shown in Figure 4 to meet the lifting requirements of the movable pulley assembly 2.6, and further meet the hoisting requirements of the plane gate 1.

[0021] In actual projects, inspection gates F are usually arranged on the upstream side and the downstream side of the plane gate 1. To meet the hoisting requirements of the inspection gates F, two tracks 6 (one corresponding to the upstream inspection gate and the other corresponding to the downstream inspection gate) are installed between two adjacent mounting bent frames 4. Two (or more than two) electric hoists 7 are slidably arranged on each track 6. The electric hoists 7 are connected to the inspection gate F to meet the lifting requirements of the inspection gate.

[0022] The utility model installs the opening and closing mechanism 2 on the pier 3 on both sides of the gate, and two opening and closing mechanisms 2 are installed back to back on each pier 3. The cantilever brackets 2.4 of the two opening and closing mechanisms 2 on the pier 3 extend obliquely to both sides, realizing the compact installation of the opening and closing mechanism 2, and to a certain extent reducing the installation height of the installation bent 4, reducing the windward area of the buildings on the dam, thereby reducing the construction risk and construction difficulty and improving the construction efficiency.

[0023] Finally, it should be emphasized that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative efforts, or make equivalent replacements for some of the technical features. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A planar gate opening and closing device for large-scale water conservancy projects, comprising a plurality of opening and closing mechanisms corresponding to the planar gates, characterized in that: It also includes a mounting frame arranged on the top of each gate pier and a frame fixed on the top of each mounting frame, each of the frames having two opening and closing mechanisms arranged back to back; Each opening and closing mechanism includes a motor, a reducer, a drum rotatably arranged on a frame, a cantilever bracket fixed on the frame, and a fixed pulley assembly and a movable pulley assembly matched with a steel wire rope. The cantilever bracket extends above one end of the gate, and the fixed pulley assembly is arranged on the top of the cantilever bracket; The drum has a first winding segment and a second winding segment, and the winding directions of the steel wire rope drawn out from the first winding segment and the steel wire rope drawn out from the second winding segment are opposite.

2. The planar gate opening and closing device for large-scale water conservancy projects according to claim 1 is characterized in that: The fixed pulley assembly comprises a balancing pulley, a plurality of fixed pulleys and two guide pulleys, wherein the balancing pulley is located in the middle, and the fixed pulleys and the guide pulleys are sequentially arranged on both sides from the balancing pulley.

3. The planar gate opening and closing device for large-scale water conservancy projects according to claim 1 is characterized in that: It also includes an electric hoist for lifting and repairing the gate; front and rear corresponding tracks are arranged between two adjacent installation racks, and at least one electric hoist is slidably arranged on each track.

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