Radial gate structure of single-suspension-point suspension type hydraulic hoist in flood discharge bottom hole of dam

Abstract

The utility model provides a single-lifting-point suspension type hydraulic hoist radial gate structure in a dam flood discharge bottom hole. The single-lifting-point suspension type hydraulic hoist radial gate structure comprises a bottom hole flood discharge dam section, a flow channel, a working gate shaft and a single-lifting-point suspension type hydraulic hoist radial gate assembly. The single-lifting-point suspension type hydraulic hoist radial gate assembly comprises a radial gate, a radial gate groove, a hoist platform, a hoist working oil cylinder, an oil cylinder seat ring and an oil cylinder telescopic rod. The arc-shaped gate grooves are two arc-shaped grooves formed in the two side walls of the flow channel, and the two ends of the arc-shaped gate are installed in the arc-shaped gate grooves in a sliding mode; the hoist platform is arranged in the service gate shaft and located above the radial gate, the hoist working oil cylinder is hinged to the hoist platform, and the tail end of an oil cylinder telescopic rod downwards extends to be hinged to the upper end of the radial gate. Gate supporting legs are installed on the inner arc face of the arc-shaped gate, and the far ends of the gate supporting legs are hinged to the downstream breast wall of the bottom hole flood discharge dam section. The gate has the advantages of low construction cost, low maintenance cost and low operation difficulty.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy engineering, in particular to a single-hanging-point suspended hydraulic hoist arc gate structure in a flood discharge bottom hole of a dam. Background Art

[0002] At present, the working gates in the bottom holes of concrete gravity dams in China are often curved working gates due to the high water pressure. One working gate is usually opened and closed by two hydraulic gate hoists. The cost of double hydraulic gate hoists is high, the synchronization and balance of the two gate hoists is difficult, and the failure rate is high.

[0003] For example, in the diversion tunnel group structure of the ultra-high rockfill dam with application number CN201920834336.6, a technical solution is provided that uses multiple hydraulic drive components to control the opening and closing of the gate. The structure itself has a certain complexity, and the gate hydraulic opening and closing machine cannot be compared with the ordinary hydraulic cylinder form. The cost is higher, which is not conducive to installation, and the balancing difficulty is also great. The failure rate is high, and the installation and maintenance costs are relatively high.

[0004] The solution using ordinary hydraulic cylinder direct connection can only be applied to some small gates. It has relatively small requirements on the gate force and cannot be applied to the working environment of the dam flood discharge bottom hole. Utility Model Content

[0005] The purpose of the utility model is to address the deficiencies of the prior art and thus provide a single-hanging-point suspended hydraulic hoist arc gate structure in a dam flood discharge bottom hole with low engineering cost, low maintenance cost and low operating difficulty.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a single-hanging-point suspended hydraulic hoist arc gate structure in the bottom hole of a dam flood discharge, comprising a bottom hole flood discharge dam section, a flow channel arranged in the bottom hole flood discharge dam section, a working gate well and a single-hanging-point suspended hydraulic hoist arc gate assembly arranged in the flow channel and the working gate well;

[0007] The single-hanging-point suspended hydraulic hoist radial gate assembly comprises a radial gate, a radial gate slot, a hoist platform, a hoist working cylinder, a cylinder seat ring and a cylinder telescopic rod;

[0008] The arc gate grooves are two arc-shaped grooves opened on the two side walls of the flow channel, and the two ends of the arc gate are slidably installed in the arc gate grooves to constrain the movement trajectory of the arc gate;

[0009] The hoist platform is arranged in the working gate well and is located above the radial gate. The cylinder body of the hoist working oil cylinder is hinged on the hoist platform through the cylinder seat ring. The end of the cylinder telescopic rod of the hoist working oil cylinder extends downward and is hinged to the upper end of the radial gate.

[0010] The inner arc surface of the arc gate is equipped with a gate leg, and the distal end of the gate leg is hinged to the downstream breast wall of the bottom hole spillway section so that the arc gate can rotate around the hinge point of the gate leg.

[0011] Preferably, a maintenance gate and a maintenance gate well are provided in the front section of the flow channel of the bottom hole spillway section, a middle breast wall is provided between the maintenance gate well and the working gate well, and the maintenance gate is located in front of the flow channel of the arc gate.

[0012] Preferably, a telescopic rod reinforcement head is provided at the end of the oil cylinder telescopic rod, a connecting base is provided at the corresponding position of the arc gate, and the telescopic rod reinforcement head and the connecting base are hinged together by a connecting pin.

[0013] Preferably, a reserved hole is provided on the gate hoist platform corresponding to the installation position of the hydraulic cylinder, a gate hoist seat beam is provided on both sides of the reserved hole, a gate hoist base is installed on the top of the gate hoist seat beam, and the cylinder ring seat is hinged to the gate hoist base through a cylinder pin.

[0014] Preferably, the distal end of the gate leg is hinged to the gate base via a base pin, and the gate base is fixed to the downstream breast wall of the bottom outlet spillway section.

[0015] Preferably, the gate legs are a frame steel beam structure that is overall triangular in shape.

[0016] Preferably, there are two gate legs, which are fixed to the inner arc surface of the arc gate in parallel with each other, and the two gate legs are hinged to the gate base through the base pin and the gate base respectively.

[0017] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the utility model has the following advantages:

[0018] The utility model arranges an arc gate in the flood discharge channel of the flood discharge bottom hole dam section, arranges a working gate well on the upper part of the arc gate, arranges a hoist platform in the middle of the gate well, and installs a hydraulic hoist at the central position of the hoist platform. The hydraulic hoist is single-point pin-connected with the arc gate at the lower part through the cylinder telescopic rod. At the same time, the ends of two gate legs of the arc gate are pin-connected with the gate base through connecting pins, so that the gate force is transmitted to the downstream breast wall.

[0019] Under the lifting action of the hydraulic gate hoist, the radial gate slides in a circular arc along the radial gate groove with the gate base as the center, ultimately realizing the opening and closing of the gate.

[0020] This solution reduces the amount of hydraulic power equipment used, reduces engineering costs, reduces maintenance costs, and reduces operational difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is one of the overall structural schematic diagrams of a single-hanging-point suspended hydraulic hoist arc gate structure in a dam flood discharge bottom hole in the utility model.

[0022] Figure 2 This is the second overall structural schematic diagram of a single-hanging-point suspended hydraulic hoist arc gate structure in a dam flood discharge bottom hole in the utility model.

[0023] Figure 3 It is a cross-sectional view of a radial gate structure of a single-hanging-point suspended hydraulic hoist in a flood discharge bottom hole of a large dam according to the utility model.

[0024] Figure 4 It is a driving structure diagram of the arc gate in the utility model.

[0025] Figure 5 yes Figure 4 Detailed structural diagram at A in the figure.

[0026] Figure 6 yes Figure 4 Detailed structural diagram of point B in the figure.

[0027] In the figure: 1- bottom hole spillway section, 2- flow channel inlet, 3- maintenance gate well, 4- working gate well, 5- flow channel outlet, 6- downstream breast wall, 7- hoist platform, 8- arc gate groove, 9- arc gate, 10- gate leg, 11- gate base, 12- base pin, 13- reserved hole, 14- hoist seat beam, 15- hoist base, 16- hoist working cylinder, 17- cylinder seat ring, 18- cylinder pin, 19- cylinder telescopic rod, 20- connecting sleeve, 21- telescopic rod reinforcement head, 22- connecting base, 23- connecting pin, 24- middle breast wall. DETAILED DESCRIPTION

[0028] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0029] like Figure 1-Figure 6As shown, a single-hanging-point suspended hydraulic hoist arc gate structure in a dam flood discharge bottom hole comprises a bottom hole flood discharge dam section 1, a flow channel arranged in the bottom hole flood discharge dam section, a working gate well 4 and a single-hanging-point suspended hydraulic hoist arc gate assembly arranged in the flow channel and the working gate well 4.

[0030] The flow channel is divided into a flow channel inlet 2 and a flow channel outlet 5 in the whole. The flow channel inlet 2 is arranged upstream of the bottom hole spillway section 1. Water flows in through the flow channel inlet 2, and flows out of the dam body from the flow channel outlet 5 after passing through the lock chamber section and discharged into the downstream river channel. The downstream side of the flow channel inlet 2 is the maintenance gate well 3, and the downstream of the maintenance gate well 3 is the working gate well 4. The downstream side of the working gate well 4 is the downstream breast wall 6, and the upstream side is the middle breast wall 24.

[0031] A maintenance gate and a maintenance gate well 3 are provided at the front section of the flow channel of the bottom hole spillway section 1. A middle breast wall 24 is provided between the maintenance gate well 3 and the working gate well 4. The maintenance gate is located in front of the flow channel of the arc gate 9.

[0032] The single-hanging-point suspended hydraulic hoist radial gate assembly comprises a radial gate 9, a radial gate slot 8, a hoist platform 7, a hoist working cylinder 16, a cylinder seat ring 17 and a cylinder telescopic rod 19;

[0033] The arc gate grooves 8 are two arc-shaped grooves opened on the two side walls of the flow channel, and the two ends of the arc gate 9 are slidably installed in the arc gate grooves 8 to constrain the movement trajectory of the arc gate 9;

[0034] The hoist platform 7 is arranged in the working gate shaft 4 and is located above the radial gate 9. The cylinder body of the hoist working cylinder 16 is hinged on the hoist platform 7 through the cylinder seat ring 17. The end of the cylinder telescopic rod 19 of the hoist working cylinder 16 extends downward and is hinged to the upper end of the radial gate 9. The hoist working cylinder 16 and the cylinder telescopic rod 19 are matched through the connecting sleeve 20 to play the role of a stable guiding structure.

[0035] The inner arc surface of the arc gate 9 is installed with a gate leg 10, which is a frame steel beam structure with an overall triangular shape. There are two gate legs, which are fixed to the inner arc surface of the arc gate in parallel with each other, and the distal ends of the two gate legs 10 are hinged to the downstream breast wall 24 of the bottom hole spillway section 1, so that the arc gate 9 rotates around the hinge point of the gate leg 10. In this embodiment, the distal ends of the gate legs 10 are hinged to the gate base 11 through the base pin 12, and the gate base 11 is fixed to the downstream breast wall 6 of the bottom hole spillway section.

[0036] Specifically, a reserved hole 13 is set on the gate hoist platform 7 corresponding to the installation position of the hydraulic cylinder, and a gate hoist seat beam 14 is set on both sides of the reserved hole 13. The top of the gate hoist seat beam 14 is installed with a gate hoist base 15, and the cylinder ring seat 17 is hinged to the gate hoist base 15 through a cylinder pin 18.

[0037] A telescopic rod reinforcement head 21 is provided at the end of the oil cylinder telescopic rod 19 , and a connecting base 22 is provided at the corresponding position of the arc gate 9 . The telescopic rod reinforcement head 21 and the connecting base 22 are hinged together through a connecting pin 23 .

[0038] Working process description:

[0039] In the normal closed state, the outer arc surface of the arc gate 9 faces the front of the flow channel 2, serving as the water-facing surface to close the flow channel 2.

[0040] When flood discharge is required, the operating cylinder of the gate hoist is controlled to start, driving the arc gate 9 to rotate along the arc gate groove 8 to open the flow channel 2.

[0041] When maintenance is needed, the maintenance gate is controlled to descend, the flow channel 2 is closed, and the space where the radial gate 9 is located is free of water pressure, and then the radial gate 9 is inspected and maintained.

[0042] Finally, it should be noted that: The above describes in detail the preferred implementation of this patent, but this patent is not limited to the above implementation. Various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of this patent.

Claims

1. A single-hanging-point suspended hydraulic hoist arc gate structure in a dam flood discharge bottom hole, characterized in that: It includes a bottom hole spillway section, a flow channel arranged in the bottom hole spillway section, a working gate well, and a single-hanging-point suspended hydraulic hoist arc gate assembly arranged in the flow channel and the working gate well; The single-hanging-point suspended hydraulic hoist radial gate assembly comprises a radial gate, a radial gate slot, a hoist platform, a hoist working cylinder, a cylinder seat ring and a cylinder telescopic rod; The arc gate grooves are two arc-shaped grooves opened on the two side walls of the flow channel, and the two ends of the arc gate are slidably installed in the arc gate grooves to constrain the movement trajectory of the arc gate; The hoist platform is arranged in the working gate well and is located above the radial gate. The cylinder body of the hoist working oil cylinder is hinged on the hoist platform through the cylinder seat ring. The end of the cylinder telescopic rod of the hoist working oil cylinder extends downward and is hinged to the upper end of the radial gate. The inner arc surface of the arc gate is equipped with a gate leg, and the distal end of the gate leg is hinged to the downstream breast wall of the bottom hole spillway section so that the arc gate can rotate around the hinge point of the gate leg.

2. According to claim 1, a single-hanging-point suspended hydraulic hoist arc gate structure in a dam flood discharge bottom hole is characterized by: A maintenance gate and a maintenance gate well are provided at the front section of the flow channel of the bottom hole spillway section. A middle breast wall is provided between the maintenance gate well and the working gate well. The maintenance gate is located in front of the flow channel of the arc gate.

3. The single-hanging-point suspended hydraulic hoist arc gate structure in the bottom hole of a dam flood discharge according to claim 2 is characterized by: A telescopic rod reinforcement head is arranged at the end of the oil cylinder telescopic rod, and a connecting base is arranged at a corresponding position of the arc gate. The telescopic rod reinforcement head and the connecting base are hinged together through a connecting pin.

4. The single-hanging-point suspended hydraulic hoist arc gate structure in the bottom hole of a dam flood discharge according to claim 3 is characterized by: A reserved hole is arranged on the gate hoist platform corresponding to the installation position of the hydraulic cylinder, a gate hoist seat beam is arranged on both sides of the reserved hole, a gate hoist base is installed on the top of the gate hoist seat beam, and the cylinder ring seat is hinged to the gate hoist base through a cylinder pin.

5. The single-hanging-point suspended hydraulic hoist arc gate structure in the bottom hole of a dam flood discharge according to claim 4 is characterized by: The distal end of the gate leg is hinged to the gate base through a base pin, and the gate base is fixed to the downstream breast wall of the bottom outlet spillway section.

6. The single-hanging-point suspended hydraulic hoist arc gate structure in the bottom hole of a dam flood discharge according to claim 5 is characterized by: The gate legs are a frame steel beam structure that is overall triangular in shape.

7. The single-hanging-point suspended hydraulic hoist arc gate structure in the bottom hole of a dam flood discharge according to claim 6 is characterized by: The gate legs are in the form of two, and the two gate legs are fixed to the inner arc surface of the arc gate in parallel with each other, and the two gate legs are hinged to the gate base through the base pin bolt and the gate base respectively.

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