Down-hole type radial gate limiting device

Abstract

According to the down-the-hole type radial gate limiting device, position limitation of a gate is automatically achieved when a hole opening is completely closed, limiting is automatically relieved through the lifting action of a hoist when the gate is opened, and the phenomenon that the down-the-hole type radial gate is lifted up possibly in the later period when the down-the-hole type radial gate is completely closed can be effectively avoided; the stress state of long-term compression when the hoisting rod of the hoist is fully closed is improved, and the hoist is prevented from being frequently put into operation. The device is simple in structure and easy and convenient to operate, the sealing performance of the down-the-hole radial gate during full closing can be improved, investment and operation energy consumption of the down-the-hole radial gate and opening and closing equipment of the down-the-hole radial gate can be effectively reduced, and the device can be widely applied to water conservancy and hydropower engineering.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water conservancy and hydropower engineering, and particularly relates to a limit device for a submerged arc gate. BACKGROUND

[0002] In water conservancy and hydropower engineering, a submerged arc gate is usually used as a submerged working gate, and a swing type hydraulic hoist is usually used for opening and closing. The submerged arc gate has a relatively high water head, resulting in a large frictional resistance in the opening and closing process. The side water seal generally needs to be pre-pressed, resulting in a large water seal frictional resistance. In addition, an uplift force exists at the top of the water seal when the gate is fully closed. Therefore, the hydraulic hoist usually adopts a double-acting hydraulic hoist, that is, the gate cannot rely on the self weight to completely close the hole, and the downward pressure of the hoist needs to be used to achieve this, which requires the hydraulic hoist to have both the upward lifting function and the downward closing function of the hole.

[0003] After the submerged arc gate is completely closed by the downward pressure of the hydraulic hoist, the uplift force at the top of the water seal still exists, and the side water seal and the bottom water seal have a certain rebound force after being compressed. Therefore, the gate has a tendency to lift after being fully closed. The hydraulic hoist can provide a large downward pressure by using the operation of the pump station when the hole is completely closed, but the pump station usually stops running after being closed. Since the internal leakage of the oil cylinder is difficult to completely avoid, although the internal leakage is small, the long-term internal leakage will gradually reduce or lose the downward pressure of the hydraulic hoist. At this time, the submerged arc gate will lift, and a large amount of water will leak or flow out from the bottom of the hole. In many domestic projects, the submerged arc gate has a tendency to lift after being fully closed for a period of time. There are two common solutions at present. One is to start the pump station to charge the upper chamber of the oil cylinder according to the pressure monitoring of the hydraulic hoist, which requires the hydraulic hoist to start and run to charge the pressure once after the gate is fully closed for a period of time, resulting in a large energy consumption. The other is to configure an accumulator for the hydraulic hoist to continuously charge the upper chamber of the oil cylinder. This solution increases the space occupied by the equipment and the investment in equipment. In addition, no matter which solution is used, the piston rod of the hydraulic hoist is in a long-term pressure state, which will affect the service life of the equipment. SUMMARY

[0004] In view of the defects in the prior art, the application provides a limit device for a submerged arc gate, which can effectively solve the above problems.

[0005] In order to achieve the above object, the present application adopts the following technical scheme: A subsurface type arc gate limiting device, comprising a connecting boom, a support frame, a movable limiter and a fixed limiting block, the connecting boom connects the gate lifting lug and the hoist boom of the hoist, the support frame is fixed on the top beam web plate on the downstream side of the arc gate lifting lug, the movable limiter is installed on the top beam web plate on one side or both sides of the connecting boom, and the fixed limiting block is anchored on the top breast wall of the arc gate hole.

[0006] Further, the connecting boom comprises a boom body, a gate lifting lug shaft, a gate lifting lug bearing, a hoist lifting lug shaft and a hoist lifting lug bearing, the two ends of the boom body are respectively provided with lug holes for installing the gate lifting lug bearing and the hoist lifting lug bearing, the lower part of the boom body is connected with the gate lifting lug through the gate lifting lug shaft, the upper part of the boom body is connected with the hoist boom through the hoist lifting lug shaft, the gate lifting lug bearing is installed on the gate lifting lug shaft so that the boom body rotates around the gate lifting lug hole, and the hoist lifting lug bearing is installed on the hoist lifting lug shaft so that the boom body rotates around the hoist boom.

[0007] Further, the boom body comprises two lug plates and an intermediate web plate, the lower part of the lug plate is provided with an outwardly extending crank arm, and the included angle α between the crank arm axis and the center line of the upper and lower lug holes of the boom body is an obtuse angle.

[0008] Further, the support frame is fixed on the top beam web plate on the downstream side of the gate lifting lug, and after the boom body rotates downward around the gate lifting lug hole by a certain angle, the intermediate web plate will be supported on the top plane of the support frame.

[0009] Further, the movable limiter comprises a movable limiting block, a limiting sliding block, a guide sleeve, a guide shaft sleeve and a spring, the limiting sliding block and the guide sleeve are respectively fixed on the upstream side and the downstream side of the top beam web plate by bolts, the downstream tail of the guide sleeve is inserted into the spring, the upstream part of the movable limiting block is supported on the limiting sliding block, and the downstream part is inserted into the guide sleeve hole after the guide shaft sleeve is installed.

[0010] Further, the upper part of the guide sleeve is a cylindrical structure, the lower part is a flat plate structure, and the middle part is a connecting reinforced system.

[0011] Further, the downstream side of the movable limiting block is a shaft type structure, and the upstream side is a block type structure, the block type structure is provided with a groove with an opening downward below, and the block type structure is provided with a rod type structure close to the connecting boom.

[0012] Further, the fixed limiting block is a block structure with a small upper surface and a large lower surface in the longitudinal section, the downstream surface is an inclined surface, and the bottom plane is flush with the top plane of the upstream part of the movable limiting block when the gate is fully closed.

[0013] The beneficial effects of the present application are: the limit device for the submerged arc gate provided by the present application can automatically realize the position limitation of the gate when the hole is completely closed, and can automatically release the limitation by the lifting action of the hoist when the gate is opened, so that the lifting phenomenon of the submerged arc gate in the later period when the hole is completely closed can be effectively avoided, the stress state of the hoist boom when the hole is completely closed can be improved, and the hoist can be avoided from frequently running. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The elevation view of the limit device for the submerged arc gate provided by the present application is shown in the figure.

[0015] Figure 2 The perspective view of the connecting boom provided by the present application is shown in the figure.

[0016] Figure 3 The structural view of the boom body provided by the present application is shown in the figure.

[0017] Figure 4 The elevation view of the movable limiter provided by the present application is shown in the figure.

[0018] Figure 5 The perspective view of the guide sleeve provided by the present application is shown in the figure.

[0019] Figure 6 The perspective view of the movable limiting block provided by the present application is shown in the figure.

[0020] Figure 7 The elevation view of the limit device for the submerged arc gate provided by the present application is shown in the figure.

[0021] Figure 8 The elevation view of the limit device for the submerged arc gate provided by the present application is shown in the figure.

[0022] Figure 9 The elevation view of the limit device for the submerged arc gate provided by the present application is shown in the figure. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear and explicit, the present application is further described in detail below with reference to the drawings. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0024] In the description of the present application, it should be noted that the terms "upper", "middle", "lower", "inner", "outer", "two sides" and the like indicate the orientation or positional relationship shown in the drawings, which is only a simplified description for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0025] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "connection" and the like should be understood broadly, for example, "connection" can be fixed connection, can also be detachable connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] As shown in Figure 1 , the roof bolting type arc gate limiting device of the present application comprises a connecting boom 1, a support frame 2, a movable limiter 3 and a fixed limiting block 4.

[0027] The connecting boom 1 connects the gate lifting lug and the hoist boom 7, the support frame 2 is fixed on the top beam web plate 5 on the downstream side of the arc gate 10 lifting lug, the movable limiter 3 is installed on the top beam web plate 5 on one side or both sides of the connecting boom 1, and the fixed limiting block 4 is anchored on the top breast wall 6 of the arc gate hole.

[0028] As a specific structure, refer to Figure 2 , the connecting boom 1 comprises a boom body 11, a gate lifting lug shaft 12, a gate lifting lug bearing 13, a hoist lifting lug shaft 14 and a hoist lifting lug bearing 15, the two ends of the boom body 11 are respectively provided with lifting lug holes for mounting the gate lifting lug bearing 13 and the hoist lifting lug bearing 15, the lower part of the boom body 11 is connected with the gate lifting lug through the gate lifting lug shaft 12, the upper part of the boom body 11 is connected with the hoist boom 7 through the hoist lifting lug shaft 14, the gate lifting lug bearing 13 is installed on the gate lifting lug shaft 12 so that the boom body 11 can rotate around the gate lifting lug hole, and the hoist lifting lug bearing 15 is installed on the hoist lifting lug shaft 14 so that the boom body 11 can rotate around the hoist boom 7.

[0029] As a specific structure, refer to Figure 3 , the boom body 11 comprises two side lug plates 112 and a middle web plate 113, after the boom body 11 rotates downward around the gate lifting lug hole by a certain angle, the middle web plate 113 will be supported on the top plane of the support frame 2, the lower part of the lug plate is provided with an outwardly extending crank arm 111, and the included angle α between the axis of the crank arm 111 and the center line of the lifting lug hole of the boom body 11 is an obtuse angle.

[0030] As a specific structure, refer to Figure 4 , the movable limit stop 3 includes movable limit block 31, limit sliding block 32, guide sleeve 33, guide shaft sleeve 34 and spring 35, limit sliding block 32 and guide sleeve 33 are fixed on the upstream side and downstream side of the door leaf top beam web respectively, the downstream side tail of the guide sleeve 33 is inserted into the spring 35, the upstream side part of the movable limit block 31 is supported on the limit sliding block 32, and the downstream side part is installed with the guide shaft sleeve 34 and inserted into the guide sleeve 33.

[0031] As a specific structure, refer to Figure 5 , the upper part of the guide sleeve 33 is a cylindrical structure, the lower part is a flat plate structure, and the middle part is a connecting ribbed system.

[0032] As a specific structure, refer to Figure 6 , the downstream side of the movable limit block 31 is a shaft type structure 311, and the upstream side is a block type structure 312, the top plane of which is flush with the bottom plane of the fixed limit block 4 when the gate is fully closed, a downwardly open groove is arranged below the block type structure 312, and a rod-shaped structure 313 is arranged on the side of the block type structure 312 close to the connecting suspender 1.

[0033] The use method and principle of the subterranean type arc gate limit stop provided by the application are as follows:

[0034] During the closing process of the subterranean type arc gate limit stop, when the opening is large, refer to Figure 7 , because the support and water seal frictional resistance of the gate is small, the door top lifting force is also small or zero, at this time, the self weight of the gate is greater than the sum of the frictional resistance and the lifting force. Therefore, at this time, the gate is in a tensile state, the upper and lower suspender hole axes of the connecting suspender 1 are collinear with the hoist suspender axis of the hoist, and the suspender body 11 is separated from the support frame 2 (not in contact).

[0035] With the continuous closing of the gate, the frictional resistance and the lifting force of the gate in the small opening state become larger and larger, when the self weight of the gate is less than the sum of the frictional resistance and the lifting force, the gate will temporarily stop and continue to descend, and when the hoist suspender continues to stretch downward, the suspender body 11 will be turned downward (clockwise in the figure) around the gate suspender hole under the action of the self weight of the suspender body 11, until the middle web of the suspender body 11 contacts the top plane of the support frame 2, and the suspender body 11 will be supported on the support frame 2. At this time, the upper and lower suspender hole axes of the connecting suspender 1 are not collinear with the hoist suspender axis, and the included angle between the two lines is an obtuse angle. When the hoist suspender continues to stretch downward to close the gate, it will provide a downward pressure to the gate to make the gate resume to descend and close. With the continuous descent of the gate, the upstream side structure 311 of the movable limit block 31 will touch the fixed limit block 4 fixed on the orifice parapet, refer to Figure 8When the gate continues to go down, the movable limiting block 31 can only slide linearly to the downstream side under the constraint of the limiting sliding block 32 and the guide sleeve 33, at this time, the spring 35 will be compressed.

[0036] When the gate is fully closed to the position, under the action of the spring 35, the movable limiting block 31 will move linearly to the upstream side, at this time, the top plane of the movable limiting block 31 is flush with the bottom plane of the fixed limiting block 4 and is tightly contacted, referring to Figure 1 At this time, even if the hoist cannot provide the downward pressure, under the constraint of the fixed limiting block 4, the upward lifting force of the water seal and the upward rebounding force of the water seal cannot make the gate lift up.

[0037] When the gate is fully closed and is ready to be opened, the hoist boom will be retracted to lift the gate, at this time, the gate will not be immediately opened, because the upper and lower lifting lug hole axis of the connecting boom 1 is not collinear with the hoist boom axis, the included angle between the two lines is an obtuse angle. The hoist boom retraction drives the connecting boom 1 to overturn upwards (counterclockwise in the figure) around the gate lifting lug hole, until the upper and lower lifting lug hole axis of the connecting boom 1 is collinear with the hoist boom axis, referring to Figure 9 During the overturning process of the connecting boom 1, the outer extension crank arm 111 of the hoist boom body 11 will push the rod-shaped structure 313 on the side of the movable limiting block 31, so that the movable limiting block 31 moves linearly to the downstream, until the upstream side structure of the movable limiting block 31 is out of the constraint of the fixed limiting block 4, at this time, the upward rotation of the arc-shaped gate is no longer restricted, and the hoist boom retraction will smoothly lift the gate.

[0038] The submersible arc-shaped gate limiting device is a simple and reliable gate limiting device, which can automatically realize the position limitation of the gate when the hole is completely closed, and automatically release the limitation when the gate is opened by using the lifting action of the hoist, so that the lifting phenomenon of the submersible arc-shaped gate in the later stage when the gate is fully closed can be effectively avoided, the stress state of the hoist boom when the gate is fully closed for a long time can be improved, and the frequent operation of the hoist can be avoided.

[0039] The submersible arc-shaped gate limiting device is simple in structure, easy to operate and convenient, can improve the sealing performance of the submersible arc-shaped gate when the gate is fully closed, effectively reduce the investment and operation energy consumption of the submersible arc-shaped gate and the hoist equipment, and can be widely used in water conservancy and hydropower engineering.

[0040] The above description is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be regarded as the protection scope of the present application.

Claims

1. A submerged arc gate limiting device, characterized in that: The invention comprises a connecting boom (1), a support frame (2), a movable stopper (3) and a fixed stopper (4); the connecting boom (1) is connected to the gate lifting lug and the hoist boom (7); the support frame (2) is fixed on the top crossbeam web (5) on the downstream side of the lifting lug of the radial gate (10); the movable stopper (3) is installed on the top crossbeam web (5) on one side or both sides of the connecting boom (1); and the fixed stopper (4) is anchored on the breast wall (6) at the top of the radial gate opening.

2. The submerged-hole radial gate limiting device according to claim 1, characterized in that: The connecting boom (1) comprises a boom body (11), a gate hanging ear shaft (12), a gate hanging ear bearing (13), a hoist hanging ear shaft (14), and a hoist hanging ear bearing (15). Both ends of the boom body (11) are respectively provided with hanging ear holes for installing the gate hanging ear bearing (13) and the hoist hanging ear bearing (15). The lower part of the boom body (11) is connected to the gate hanging ear through the gate hanging ear shaft (12), and the upper part of the boom body (11) is connected to the hoist boom (7) through the hoist hanging ear shaft (14). The gate hanging ear bearing (13) is installed on the gate hanging ear shaft (12) so that the boom body (11) can rotate around the gate hanging ear hole. The hoist hanging ear bearing (15) is installed on the hoist hanging ear shaft (14) so ​​that the boom body (11) can rotate around the hoist boom (7).

3. The submerged-hole radial gate limiting device according to claim 2, characterized in that: The boom body (11) comprises two side ear plates (112) and a middle web (113); an outward-extending crank arm (111) is provided at the lower portion of the ear plate (112); and an angle α between the axis of the crank arm (111) and a line connecting the centers of the upper and lower ear holes of the boom body (11) is an obtuse angle.

4. The submerged-hole radial gate limiting device according to claim 3, characterized in that: The support frame (2) is fixed on the web (5) of the top crossbeam on the downstream side of the gate lifting ear. After the boom body (11) rotates downward at a certain angle around the gate lifting ear hole, the middle web (113) will be supported on the top plane of the support frame (2).

5. The submerged-hole radial gate limiting device according to claim 1, characterized in that: The movable limiter (3) comprises a movable limit block (31), a limit slider (32), a guide sleeve (33), a guide shaft sleeve (34) and a spring (35). The limit slider (32) and the guide sleeve (33) are respectively fixed to the upstream side and the downstream side of the top cross beam web (5) by bolts. The spring (35) is inserted into the tail of the downstream side of the sleeve guide sleeve (33). The upstream side of the movable limit block (31) is supported on the limit slider (32), and the downstream side is installed with the guide shaft sleeve (34) and then inserted into the inner hole of the guide sleeve (33).

6. The submerged-hole radial gate limiting device according to claim 5 is characterized in that: The guide sleeve (33) has a cylindrical structure at the top, a flat plate structure at the bottom, and a connecting reinforcement system in the middle.

7. The submerged-hole radial gate limiting device according to claim 5, characterized in that: The downstream side of the movable limit block (31) is an axis-type structure (311), and the upstream side is a block-type structure (312). A groove with a downward opening is provided below the block-type structure (312), and a rod-shaped structure (313) is provided on the side of the block-type structure close to the connecting boom (1).

8. The submerged-hole radial gate limiting device according to claim 5, characterized in that: The fixed limit block (4) is a block structure with a longitudinal cross section that is smaller at the top and larger at the bottom. Its downstream surface is an inclined surface, and its bottom surface is flush with the top surface of the upstream part of the movable limit block (31) when the gate is fully closed.

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