Special lifting appliance for water conservancy gate

Abstract

The utility model relates to a special lifting appliance for a water conservancy gate, which comprises an upper beam body and a lower beam body, an upper lifting lug is arranged at the upper end of the upper beam body, a lower lifting lug is arranged at the lower end of the lower beam body, and a rotary connecting structure is arranged between the upper beam body and the lower beam body. The rotating connection structure comprises a horizontal shaft allowing the lower beam body to rotate in a pitching mode relative to the upper beam body and further comprises a vertical shaft allowing the lower beam body to rotate in the horizontal plane relative to the upper beam body. The lower end of the lower lifting lug is rotationally connected with a gate lifting lug connecting structure, the gate lifting lug connecting structure comprises a lifting claw, a lifting hole is formed in the lifting claw, and the rotating axis, rotating relative to the lower lifting lug, of the gate lifting lug connecting structure extends in the length direction of the lower beam body. The gate can be driven to rotate in the horizontal plane, and the requirement that a steel wire rope of a winch does not deflect when the gate is put down or erected can be met. The gate can be independently detached from the gate groove and can also be independently installed in the gate groove, and the gate overhauling speed of a construction site is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy, specifically to a special lifting device for a water conservancy planar gate. Background Technology

[0002] Gates are devices used for water retention and flood discharge in various water conservancy projects. Planar gates are widely used; they can be used to control the outflow of water from water conservancy projects, as well as to impound water and provide maintenance conditions for the downstream flow channel and the gate itself. With the increase of operating time and the erosion of the flow, gates will inevitably experience structural damage such as peeling of anti-corrosion coating, damage to water seal, and damage to auxiliary sliders. At this time, gate maintenance is required.

[0003] Due to the limitations of gate installation conditions, it is installed in a confined gate slot space. The inherent gate slot environment cannot provide thorough maintenance conditions for the gate. Removing the gate from the opening and laying it flat on the external site can create favorable conditions for thorough anti-corrosion maintenance of the gate and improve the quality of maintenance.

[0004] Currently, water conservancy gates are often centrally located, and gantry cranes and other equipment are typically installed within these centrally located areas for vertical gate lifting operations. The specific structure is as follows: Figure 1 As shown. The gantry crane 100 generally has three degrees of freedom of operation: the main trolley moves left and right along the dam body 200 (i.e., the X direction in the figure), the trolley moves upstream and downstream along the water flow (i.e., the Y direction in the figure), and the lifting structure mounted on the trolley moves up and down (i.e., the Z direction in the figure). The gate is generally arranged parallel to the dam body's left and right directions in its width direction and perpendicular to the upstream and downstream directions of the water flow, effectively enabling the gate 300 to impound water. However, due to space constraints in the dam body 200, the upstream and downstream directions are often narrow, making it difficult to meet the spatial distance required to lift and lay the gate 300 horizontally.

[0005] In existing technologies, external cranes are often used to lift gates out, using the crane to pull steel cables for lifting and lowering. This method has several disadvantages: first, the gate is located on a thin-walled concrete beam structure, and the top cannot support a large-tonnage mobile crane; if the gate is too heavy, lifting operations cannot be performed. Second, the crane incurs significant additional costs, increasing labor costs. Therefore, considering the existing gantry crane conditions, it is necessary to design a dedicated lifting device to solve these problems. Utility Model Content

[0006] The purpose of this utility model is to provide a special lifting tool for water conservancy gates to solve the technical problem of inconvenient lifting and transportation of water conservancy gates in the prior art.

[0007] To achieve the above objectives, the present invention provides a special lifting tool for hydraulic gates, which adopts the following technical solution:

[0008] A special lifting device for hydraulic gates includes an upper beam and a lower beam. The upper end of the upper beam is provided with an upper lifting lug for connecting to a hoist trolley, and the lower end of the lower beam is provided with a lower lifting lug. A rotatable connection structure is provided between the upper and lower beams. The rotatable connection structure includes a horizontal axis for the lower beam to pitch relative to the upper beam and a vertical axis for the lower beam to rotate relative to the upper beam in the horizontal plane to adjust the angle between their length directions. The lower end of the lower lifting lug is rotatably connected to a gate lifting lug connection structure, which includes a lifting claw. The lifting claw has a lifting hole for connecting to the gate to be lifted. The rotation axis of the gate lifting lug connection structure relative to the lower lifting lug extends along the length direction of the lower beam.

[0009] Furthermore, the gate lifting lug connection structure includes a base plate fixedly connected to the lifting claw, a connecting pin is provided inside the base plate, and a handwheel for driving the connecting pin to move in and out of the lifting hole is also installed on the base plate.

[0010] Furthermore, a lead screw is fixed on the handwheel, and a connecting pin is installed in a hole in the middle of the base plate to prevent circumferential rotation and to allow axial movement. The lead screw is threaded into the connecting pin.

[0011] Furthermore, the lower end of the lower beam is provided with two lower lifting lugs, which are located at both ends of the lower beam.

[0012] Furthermore, the base plate is disposed on the side opposite to the gate lifting lug connection structure on the other side.

[0013] Furthermore, the substrate is disposed on the opposite sides of the two sets of gate lug connection structures.

[0014] Furthermore, the substrate is a hollow cylindrical structure that surrounds the lead screw and connecting pin from the outside.

[0015] The beneficial effects of this utility model are as follows: This utility model can drive the gate to rotate in the horizontal plane, and can also meet the requirement of keeping the winch wire rope from tilting when the gate is laid down and erected. Using this utility model, the gate can be removed from the gate slot independently, and the gate can also be installed into the gate slot independently, which greatly improves the speed of gate maintenance at the construction site.

[0016] Furthermore, the gate lifting lug connection structure of this utility model achieves gate connection or disconnection by rotating the handwheel to drive the connecting pin to move in and out of the lifting hole, which is convenient to operate and does not require the use of external tools. When the limiting plate of the gate lifting lug connection structure contacts the upper end of the gate, the connecting pin is guided to move within the base plate, which ensures that the connecting pin can enter the pre-reserved lifting hole at the upper end of the gate, further reducing the difficulty of positioning the connecting pin. Attached Figure Description

[0017] Figure 1This is a schematic diagram illustrating the working conditions requiring the hoisting of hydraulic gates;

[0018] Figure 2 This is a schematic diagram of the structure of one embodiment of a special lifting tool for hydraulic gates according to this utility model;

[0019] Figure 3 yes Figure 2 Side view;

[0020] Figure 4 This is a side view of the gate lifting lug connection structure when it is rotated to be perpendicular to the second lifting lug.

[0021] Figure 5 This is a structural diagram of the gate lifting lug connection structure;

[0022] Figure 6 This is a schematic diagram illustrating the state changes during the hoisting of the gate. Detailed Implementation

[0023] An embodiment of a special lifting tool for hydraulic gates according to this utility model:

[0024] The specific structure of a special lifting tool for hydraulic gates according to this utility model is as follows: Figures 2 to 6 As shown, the structure includes an upper beam 1 and a lower beam 2. Two sets of upper lifting lugs 3 are spaced apart along the length of the upper beam 1, with shaft holes in the upper lifting lugs 3 for axle insertion along the length of the upper beam 1. Two sets of lower lifting lugs 4 are spaced apart along the length of the lower beam 2, with shaft holes in the lower lifting lugs 4 for axle insertion along the length of the lower beam 2. Both the upper lifting lugs 3 and lower lifting lugs 4 include two sets of lifting plates, and the lifting plates have shaft holes for lifting.

[0025] A rotatable connection structure is provided between the upper beam 1 and the lower beam 2. The lower end of the lower lifting lug 4 is rotatably connected to the gate lifting lug connection structure 5 via a shaft. Through the rotatable connection structure, the lower beam 2 can rotate both along the horizontal axis O1 parallel to the length direction of the upper beam 1 and along the vertical axis O2. When the lower beam 2 rotates along the vertical axis O2, the angle between the length directions of the upper beam 1 and the lower beam 2 can be adjusted.

[0026] The rotating connection structure includes a vertical rotating shaft 6 rotatably connected to the middle of the upper beam 1, a second connecting lug 8 fixed to the upper end of the lower beam 2, a connecting hole on the vertical rotating shaft 6, and a transverse rotating shaft 9 passing through the connecting hole and the second connecting lug 8. The axis of the transverse rotating shaft 9 is along the length of the lower beam 2. The vertical rotating shaft 6 rotates along the vertical axis O2. Specifically, the vertical rotating shaft 6 includes a fixed inner shaft and a rotating outer shaft. The upper end of the fixed inner shaft is fixed to the middle of the upper beam 1, and the connecting hole is opened on a shaft segment that is offset from the rotating outer shaft and the fixed inner shaft.

[0027] The gate lifting lug connection structure 5 includes a lifting claw 10 with a lifting hole 15. A base plate 11 is fixed on the lifting claw 10, and a handwheel 12 is rotatably mounted on the base plate 11. A connecting pin 13 is provided inside the base plate 11 and is connected to the handwheel 12. When the handwheel 12 is rotated, the connecting pin 13 can be moved horizontally, passing through the lifting hole 15 and the pre-reserved lifting hole on the gate to be lifted, thus connecting the gate to be lifted to the bottom of the special lifting tool of this utility model.

[0028] The principle of handwheel 12 driving connecting pin 13 is as follows: Figure 5 As shown, the system includes a lead screw 14 fixed to the handwheel 12, and a connecting pin 13 that is circumferentially anti-rotating and axially movable, installed in a hole in the middle of the base plate 11. The lead screw 14 is threaded into the connecting pin 13. When the handwheel 12 drives the lead screw 14 to rotate, the threaded connecting pin 13 cannot rotate, but can only be guided to move within the base plate 11, thereby entering or exiting the lifting hole on the lifting claw 10.

[0029] The gate lifting lug connection structure 5 also includes a limiting plate 15. The distance between the limiting plate 15 and the lifting hole is equal to the distance between the gate to be lifted and the upper end of the gate to be lifted. Therefore, when the limiting plate 15 contacts the upper end of the gate to be lifted, the pre-reserved lifting hole on the gate to be lifted and the lifting hole on the lifting claw 10 are coaxial.

[0030] In this embodiment, the lower lifting lugs 4 are located at both ends of the lower beam 2 to maximize the distance between the two lower lifting lugs 4 and increase the stability of the gate to be lifted.

[0031] In this embodiment, the base plate 11 is cylindrical and is disposed on the side opposite to the gate lifting lug connection structure 5 and the other side gate lifting lug connection structure 5. Therefore, the base plates 11 on both sides can be lifted from both ends and are located between the two gate lifting lug connection structures 5. In this case, the special lifting tool of this utility model has a smaller width and a more compact structure.

[0032] When the gate is located in the gate slot, the width of the gate extends along the length of the dam body, and it is in... Figure 6 The A1 state is shown. When using this invention to lift the gate out of the gate slot, first connect different positions on the upper end of the gate through the gate lifting lug connecting structure 5, and then use a winch to drive the special lifting device of this invention and the gate below it to rise. Wait until the gate is completely lifted out of the gate slot to... Figure 6 After reaching state A2 as shown, the lower beam 2 is rotated 90 degrees relative to the upper beam 1 in the horizontal plane via the rotating connection structure. After rotation, the gate extends along the width direction of the dam body, reaching a position where... Figure 6 The gate is shown in state A3. Afterwards, the gate is transported to the appropriate position by the trolley and the main trolley, and then slowly lowered until the lower end of the gate contacts the dam surface. At this point, the gate is in state A3. Figure 6As shown in state A4. The trolley's movement, in conjunction with the winch's descent, gradually brings the upper part of the gate closer to the ground, thus achieving the effect of leveling the gate. The gate is leveled during this process. Figure 6 As shown in state A5, the gate is in a position where it is completely flat on the dam surface. Figure 6 The A6 state is shown.

[0033] Example 2:

[0034] The difference between Embodiment 2 and Embodiment 1 is that the base plate 11 is disposed on the outside of the gate lifting lug connection structure 5, which is equivalent to extending the gate lifting lug connection structure 5 through the base plate 11.

Claims

1. A special lifting tool for hydraulic gates, characterized in that: The device includes an upper beam and a lower beam. The upper end of the upper beam is provided with an upper lifting lug for connecting to the hoist trolley, and the lower end of the lower beam is provided with a lower lifting lug. A rotatable connection structure is provided between the upper beam and the lower beam. The rotatable connection structure includes a horizontal axis for the lower beam to pitch relative to the upper beam and a vertical axis for the lower beam to rotate relative to the upper beam in the horizontal plane to adjust the angle between their length directions. The lower end of the lower lifting lug is rotatably connected to a gate lifting lug connection structure. The gate lifting lug connection structure includes a lifting claw with a lifting hole for connecting to the gate to be lifted. The rotation axis of the gate lifting lug connection structure relative to the lower lifting lug extends along the length direction of the lower beam.

2. The special lifting tool for hydraulic gates according to claim 1, characterized in that: The gate lifting lug connection structure includes a base plate fixedly connected to the lifting claw, a connecting pin is provided inside the base plate, and a handwheel for driving the connecting pin to move in and out of the lifting hole is also installed on the base plate.

3. The special lifting tool for hydraulic gates according to claim 2, characterized in that: A lead screw is fixed on the handwheel, and a connecting pin is installed in a hole in the middle of the base plate to prevent circumferential rotation and to allow axial movement. The lead screw is threaded into the connecting pin.

4. The special lifting tool for hydraulic gates according to claim 2, characterized in that: The lower end of the lower beam is provided with two lower lifting lugs, which are located at both ends of the lower beam.

5. A special lifting tool for hydraulic gates according to claim 4, characterized in that: The base plate is disposed on the side opposite to the gate lifting lug connection structure on the other side.

6. A special lifting tool for hydraulic gates according to claim 4, characterized in that: The base plate is disposed on the opposite sides of the two sets of gate lifting lug connection structures.

7. A special lifting tool for hydraulic gates according to claim 3, characterized in that: The substrate is a hollow cylindrical structure that surrounds the lead screw and connecting pin.

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