Self-centering push-sliding structure of hydraulic lifting gate

Abstract

The present invention belongs to the technical field of gate equipment for water conservancy and hydropower projects, and specifically relates to a self-centering, jacking and sliding structure for a hydraulically lifted gate. The present invention includes components such as a gate, a first circular body, a second circular body, an elastic body limit block and a circular body limit block. The first circular body and the second circular body cooperate to form a sliding connection pair. The elastic body limit blocks are located on the left and right sides of the first circular body. The elastomer is located between the elastic body limit block and the first circular body. Under the action of the elastic body limit block, the elastic body clamps the first circular body; the upper surface of the first circular body is slidably connected to the lower surface of the gate; the circular body limit blocks are located on the front and back sides of the first circular body. The present invention can adapt to the deformation caused by thermal expansion and contraction or bending of the gate, can prevent the gate from generating internal stress, and prevent lateral thrust on the oil cylinder base. The present invention also has the function of improving the wind-induced overturning stability of the gate. The present invention has the characteristics of simple and reasonable structure.

Description

Technical Field

[0001] The invention belongs to the technical field of gate equipment of water conservancy and hydropower engineering, and particularly relates to a self-centering, jacking and sliding structure of a hydraulic jacking gate. Background Art

[0002] In sluice projects with landscape requirements, hydraulic jacking gate is a common gate. Its characteristic is that the opening and closing of the gate is controlled by the oil cylinder hidden in the gate piers on both sides of the gate hole. There are no exposed building structures such as frame columns on the top of the gate, and the equipment is well concealed.

[0003] Common structural forms of hydraulic jacking gates include Figure 1 and Figure 2 As shown, Figure 1 It is a lifting gate without operating beam. Figure 2 It is a lifting gate with an operating crossbeam. In order to adapt to the bending deformation of the gate under stress, a spherical sliding pushing structure is usually set on the upper end of the pushing cylinder, and a lifting support is set on the gate to form a spherical sliding connection pair, such as Figure 3 Specifically, the lifting supports of the jacking gate with the operating beam are arranged at both ends of the operating beam. Figure 2 As shown. The lifting supports of the lifting gate without operating beam are set at the left and right ends of the upper part of the gate body, as shown in Figure 1 shown.

[0004] Since the gate body or operating beam is located outdoors and exposed to direct sunlight, the temperature difference is very large, and the thermal expansion and contraction effect will cause the gate body or operating beam to have a large extension or shortening. The dam is only exposed to direct sunlight on the surface, and the overall temperature does not change much, so the overall deformation of the dam is also relatively small. The operating cylinder is located inside the dam body, and the relative position of the cylinder base in the dam on both sides remains almost unchanged. When the gate is fully closed, the gate body or operating beam will deform greatly, which will generate a large lateral thrust on the cylinder base. The spherical sliding structure of the existing technology cannot adapt to this unfavorable factor, causing the gate body or operating beam to generate very large internal stress. The lifting gate with an operating beam not only needs to adapt to the bending deformation of the beam, but also needs to adapt to the installation error of the gate slot and the jacking cylinder in the direction of the water flow. Therefore, the gate and the operating beam are generally set as rotatable booms in the direction of the water flow, such as Figure 2 As shown in the figure, for a lifting gate with an operating beam, the two ends are unstable spherical sliding structures, the middle is also a rotating boom connection structure, and the center of gravity of the operating beam is above the spherical sliding center. The operating beam is at risk of overturning at any time and cannot bear the lateral force caused by wind loads. Summary of the Invention

[0005] The technical problem to be solved by the present invention is: the present invention provides a hydraulic jacking gate self-centering pushing and sliding structure which can adapt to the thermal expansion and contraction deformation or bending deformation of the gate.

[0006] The technical solution adopted by the present invention to solve its technical problems is: The present invention provides a self-centering pushing and sliding structure of a hydraulic jacking gate, including a gate and a first circular body arranged on the gate, a plunger rod and a second circular body fixedly arranged on the upper end of the plunger rod; the first circular body is located above the second circular body, and the first circular body and the second circular body cooperate to form a sliding connection pair of a circular arc convex surface and a circular arc concave surface; it also includes an elastic body, an elastic body limit block and a circular body limit block, and the elastic body limit block and the circular body limit block are both fixedly connected to the gate; the elastic body limit block is located on the left and right sides of the first circular body, and the elastic body is located between the elastic body limit block and the Between the first circular body, the elastic body limit block limits the movement of the elastic body, and under the action of the elastic body limit block, the elastic body clamps the first circular body; the upper surface of the first circular body is slidably connected to the lower surface of the gate; the circular body limit block is located on the front and rear sides of the first circular body, and the circular body limit block limits the front and rear movement of the first circular body and the second circular body, and a second circular body limit edge is provided at its lower part near the second circular body side, and a bayonet gap f is provided between the upper surface of the second circular body limit edge and the lower surface of the second circular body, and the second circular body limit edge limits the second circular body from sliding out from the lower part of the circular body limit block.

[0007] Furthermore, a seat plate is fixedly provided on the lower surface of the gate, and the elastic body limit block and the circular surface limit block are fixedly connected to the seat plate; the upper surface of the first circular surface is slidably connected to the lower surface of the seat plate.

[0008] Furthermore, the seat plate is fixed to the lower surface of the gate by welding, and the elastic body limiting block and the circular surface limiting block are both fixedly connected to the seat plate by screws.

[0009] Furthermore, a slide plate is fixedly provided below the seat plate, and the upper surface of the first circular surface is slidably connected to the lower surface of the slide plate.

[0010] Furthermore, at least one of the second circular body and the first circular body is made of self-lubricating material; at least one of the first circular body and the slide plate is made of self-lubricating material.

[0011] Furthermore, the slide plate and the seat plate are fixedly connected by welding.

[0012] Furthermore, the elastic body is a rubber elastic block.

[0013] Furthermore, the bayonet gap f value is 5-10 mm.

[0014] The beneficial effects of the present invention are as follows: the self-centering pushing and sliding structure of the hydraulic lifting gate of the present invention includes a first circular body and a second circular body, the second circular body is fixedly arranged on the piston rod, and the first circular body is arranged on the gate. The first circular body is not directly fixedly connected to the gate in the traditional solution. On the contrary, in the present invention, the first circular body is clamped by the action of the elastic body limit block and the elastic body, and the upper surface of the first circular body is slidably connected to the lower surface of the gate, and relative sliding can occur. In the case of thermal expansion, cold contraction or bending deformation, the gate will deform in the width direction and then slide relative to the first circular body and the second circular body, which greatly reduces the lateral thrust of the gate deformation on the oil cylinder base and the internal stress of the gate body and the operating beam; and when the gate is deformed, the first circular body and the second circular body still cooperate to form a sliding connection pair of the arc-shaped convex surface and the arc-shaped concave surface, thereby improving the stability of the structure.

[0015] Furthermore, in this invention, the first and second toric bodies employ arc-shaped sliding structures, rather than the spherical sliding structures of conventional solutions. This arrangement limits the gate's deflection along the direction of the water flow, transferring wind loads in the direction of the water flow and improving the gate's resistance to wind-induced overturning.

[0016] Because the upper surface of the first circular body is in sliding connection with the lower surface of the gate, the friction forces at both ends of the gate may be inconsistent during the gate's deformation and sliding due to manufacturing and other factors, resulting in unilateral sliding, where the gate slides only in one direction. The configuration of the elastic body produces different deformations to balance the frictional inconsistencies between the two ends of the gate during sliding, preventing unilateral sliding and misalignment caused by inconsistent friction forces at both ends during sliding, thereby achieving the purpose of centered sliding.

[0017] When the gate is locked and the oil cylinder is depressurized, the second toroidal limiting edge structure provided in the present invention can limit the risk of the second toroidal body being separated from the upper structure.

[0018] In summary, the self-centering, jacking, and sliding structure of the hydraulically-lifted gate of the present invention can adapt to gate deformation caused by thermal expansion, contraction, or bending, preventing internal stress in the gate and lateral thrust on the cylinder base. Furthermore, the present invention improves the gate's stability against wind-induced overturning. The present invention is characterized by its simple and rational structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of a gate without an operating crossbeam;

[0020] Figure 2 It is a schematic diagram of a gate with an operating beam;

[0021] Figure 3 It is a schematic diagram of a jacking structure in the prior art;

[0022] Figure 4is a half-section schematic diagram of the present invention along the width direction of the gate;

[0023] Figure 5 It is along Figure 4 Schematic diagram of half section of AA.

[0024] Markings in the figure are: 1-seat plate, 2-elastic body limiting block, 21-elastic body limiting edge, 3-circular surface limiting block, 31-second circular surface limiting edge 31, 4-plunger rod, 5-second circular surface, 6-first circular surface, 7-elastic body, 8-slide plate, 9-gate. DETAILED DESCRIPTION

[0025] The following further describes the specific embodiments of the present invention in conjunction with the accompanying drawings to provide a deeper understanding of the concept of the present invention, the technical problems solved, the technical features constituting the technical solutions, and the technical effects brought about. However, it should be noted that the description of these embodiments is illustrative only and does not constitute a specific limitation of the present invention.

[0026] The present invention provides a self-centering and pushing sliding structure of a hydraulic jacking gate, comprising a gate 9 and a first circular body 6 arranged on the gate 9, a plunger rod 4 and a second circular body 5 fixedly arranged on the upper end of the plunger rod 4; the first circular body 6 is located above the second circular body 5, and the first circular body 6 and the second circular body 5 cooperate to form a sliding connection pair of an arc-shaped convex surface and an arc-shaped concave surface; further comprising an elastic body 7, an elastic body limit block 2 and a circular body limit block 3, the elastic body limit block 2 and the circular body limit block 3 are both fixedly connected to the gate 9; the elastic body limit block 2 is located on the left and right sides of the first circular body 6, and the elastic body 7 is located between the elastic body limit block 2 and the first circular body Between the circular bodies 6, the elastic body limit block 2 limits the movement of the elastic body 7, and under the action of the elastic body limit block 2, the elastic body 7 clamps the first circular body 6; the upper surface of the first circular body 6 is slidingly connected to the lower surface of the gate 9; the circular body limit block 3 is located on the front and rear sides of the first circular body 6, and the circular body limit block 3 limits the front and rear movement of the first circular body 6 and the second circular body 5. The lower part thereof is provided with a second circular body limit edge 31 near the side of the second circular body 5, and a bayonet gap f is provided between the upper surface of the second circular body limit edge 31 and the lower surface of the second circular body 5. The second circular body limit edge 31 limits the second circular body 5 from sliding out from the lower part of the circular body limit block 3.

[0027] Compared with the traditional solution, the present invention has at least the following improvements: 1. The present invention improves the spherical sliding structure in the traditional solution into an arc surface sliding structure; 2. The first circular body 6 of the present invention is not directly fixedly connected to the gate 9. This solution uses an elastomer 7 in conjunction with an elastomer limit block 2 to fix the first circular body 6, and the upper end of the first circular body 6 is slidably connected to the lower surface of the gate 9. The above-mentioned improvement point 1 has the excellent effect of limiting the deflection of the gate body or beam along the direction of water flow, and is used to transmit wind loads in the direction of water flow, and improve the wind-induced overturning stability of the operating beam and the gate body lifting support. The above-mentioned improvement point 2 has the excellent effect of preventing the gate deformation from generating lateral thrust on the cylinder base and internal stress on the gate.

[0028] In the present invention, it is not limited that the first circular body 6 is convex or concave, and the second circular body 5 is convex or concave. The two are in a corresponding relationship. When the first circular body 6 is convex, the second circular body 5 is concave. When the first circular body 6 is concave, the second circular body 5 is concave. However, it is preferred that the first circular body 6 is concave and the second circular body 5 is convex. Such an arrangement can avoid the accumulation of dust, impurities, etc. In the present invention, the first circular body 6 and the second circular body 5 cooperate to form a sliding connection pair of an arc-shaped convex surface and an arc-shaped concave surface. The arc-shaped surface mentioned in the present invention refers to an outer wall surface similar to a cylindrical shape, combined with Figure 4 、 5 The present invention does not limit the specific shape and structure of the elastic body limit block 2, as long as it can limit the elastic body 7. In the specific embodiment of the present invention, in order to facilitate the limitation of the elastic body 7, an elastic body limit edge 21 is provided on the lower part of the limit block 2 near the elastic body 7. Figure 4 As shown, the upper end face of the elastic body limit edge 21 contacts the lower end face of the elastic body 7. When the gate 9 is deformed due to thermal expansion and contraction or bending, the deformation direction is the width direction of the gate 9, so the elastic body limit block 2 is located on the left and right sides of the first circular body 6. In the present invention. The circular body limit block 3 is arranged on the front and back sides of the first circular body 6, and is used to limit the first circular body 6 and the second circular body 5 front and back. The lower part thereof is provided with a second circular body limit edge 31 near the side of the second circular body 5 to prevent the second circular body 5 from being separated from the first circular body 6 when the gate is locked and the oil cylinder is depressurized; and a snap gap f is provided between the upper surface of the second circular body limit edge 31 and the lower surface of the second circular body 5, and the snap gap f is used to adapt to the bending deformation of the gate 9.

[0029] The present invention does not limit the fixing method of the elastomeric limit block 2 and the circular limit block 3, which can be welded or connected by bolts, etc. In the present invention, the elastomeric limit block 2 and the circular limit block 3 can be directly fixedly connected to the lower surface of the gate 9. However, since the gate 9 is a structural component, its size is relatively large. If it is to be directly connected to the elastomeric limit block 2 and the circular limit block 3, its positioning size, processing and forming, and connection accuracy are difficult to guarantee, and it is not convenient to process. In the present invention, preferably, a seat plate 1 is fixedly provided on the lower surface of the gate 9, and the elastomeric limit block 2 and the circular limit block 3 are fixedly connected to the seat plate 1; the upper surface of the first circular body 6 is slidably connected to the lower surface of the seat plate 1. Since the size of the seat plate 1 is much smaller than that of the gate 9, it can be finely processed, and threaded holes or other fixing structures can be processed on it, which is simpler than processing directly on the gate 9. Those skilled in the art should understand that the sliding connection between the upper surface of the first circular body 6 and the lower surface of the seat plate 1 does not mean that they are connected by means of slide rails and slide grooves. In the present invention, the upper surface of the first circular body 6 is in contact with the lower surface of the gate 9. During the process of thermal expansion and contraction or bending deformation of the gate 9, the lower surface of the gate 9 will slide relative to the upper surface of the first circular body 6, which is the sliding connection referred to here.

[0030] In a specific embodiment of the present invention, the seat plate 1 is fixedly connected to the lower surface of the gate 9 by welding, and the elastic stopper 2 and the toroidal stopper 3 are both fixedly connected to the seat plate 1 by screws. This welding of the seat plate 1 to the lower surface of the gate 9 avoids the need for precision machining of threaded holes in the gate 9, reducing the difficulty of machining the gate 9 and installing the seat plate 1. The screwing of the elastic stopper 2 and the toroidal stopper 3 to the seat plate 1 facilitates their removal and replacement if internal components become damaged.

[0031] Since the upper surface of the first circular body 6 will contact and slide with the lower surface of the seat plate 1 after the seat plate 1 is set, in order to reduce the friction during the sliding process, it is preferred that a slide plate 8 is fixedly provided below the seat plate 1, and the upper surface of the first circular body 6 is slidably connected to the lower surface of the slide plate 8. The purpose of providing the slide plate 8 is to be able to set the slide plate 8 to a material with a smoother surface and a lower friction coefficient, such as stainless steel, so as to facilitate the sliding of the upper surface of the first circular body 6 and the lower surface of the slide plate 8, thereby saving costs. Because the seat plate 1 is used to fix the elastic body limit block 2 and the circular body limit block 3, its length and width dimensions are large and its thickness is thick. It is extremely uneconomical to directly set the entire seat plate 1 to a material such as stainless steel.

[0032] Furthermore, the upper surface of the first circular body 6 and the lower surface of the slide 8, as well as the upper surface of the second circular body 5 and the lower surface of the first circular body 6, are all in sliding connection. To reduce sliding friction and make sliding smoother, it is preferred that at least one of the second circular body 5 and the first circular body 6 be made of a self-lubricating material; and at least one of the first circular body 6 and the slide 8 be made of a self-lubricating material, such as steel-based copper plastic, copper-based inlay, cast aluminum bronze, etc.

[0033] Preferably, the slide plate 8 and the seat plate 1 are also fixedly connected by welding, which can reduce the difficulty of processing the slide plate 8 and the seat plate 1.

[0034] The present invention is not limited to the type or material of the elastic body; it may be a carbon spring, an alloy steel spring, a polyurethane rubber block, or the like. In the present invention, the elastic body 7 is preferably a rubber elastic block. Rubber elastic blocks offer advantages such as corrosion resistance, moisture resistance, high elasticity, and a strain curve that exhibits no yielding.

[0035] The gap f must not only accommodate the bending deformation of the gate 9 but also be able to withstand the deadweight of the plunger rod 4 after the gate 9 is locked. The gap f is preferably 5-10 mm.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. The self-centering push-pushing sliding structure of the hydraulic jacking gate is characterized by: The invention comprises a gate (9) and a first circular body (6) arranged on the gate (9), a plunger rod (4) and a second circular body (5) fixedly arranged on the upper end of the plunger rod (4); the first circular body (6) is located above the second circular body (5), and the first circular body (6) and the second circular body (5) cooperate to form a sliding connection pair of an arc-shaped convex surface and an arc-shaped concave surface; and further comprises an elastic body (7), an elastic body limit block (2) and a circular body limit block (3), and the elastic body limit block (2) and the circular body limit block (3) are both fixedly connected to the gate (9); the elastic body limit block (2) is located on the left and right sides of the first circular body (6), the elastic body (7) is located between the elastic body limit block (2) and the first circular body (6), and the elastic body The limit block (2) limits the movement of the elastic body (7), and under the action of the elastic body limit block (2), the elastic body (7) clamps the first circular body (6); the upper surface of the first circular body (6) is slidably connected to the lower surface of the gate (9); the circular body limit block (3) is located on the front and rear sides of the first circular body (6), and the circular body limit block (3) limits the front and rear movement of the first circular body (6) and the second circular body (5), and the lower part of the circular body limit edge (31) is provided near the side of the second circular body (5), and a bayonet gap f is provided between the upper surface of the second circular body limit edge (31) and the lower surface of the second circular body (5), and the second circular body limit edge (31) limits the second circular body (5) from sliding out from the lower part of the circular body limit block (3); A seat plate (1) is fixedly provided on the lower surface of the gate (9), and the elastic body limit block (2) and the circular surface limit block (3) are both fixedly connected to the seat plate (1); the upper surface of the first circular surface (6) is slidably connected to the lower surface of the seat plate (1); The seat plate (1) is fixed to the lower surface of the gate (9) by welding, and the elastic body limit block (2) and the circular surface limit block (3) are both fixedly connected to the seat plate (1) by screws; A slide plate (8) is also fixedly provided below the seat plate (1), and the upper surface of the first circular body (6) is slidably connected to the lower surface of the slide plate (8).

2. The self-centering, pushing and sliding structure for a hydraulically-operated gate according to claim 1 is characterized in that: At least one of the second circular surface (5) and the first circular surface (6) is made of a self-lubricating material; and at least one of the first circular surface (6) and the slide plate (8) is made of a self-lubricating material.

3. The self-centering, pushing and sliding structure for a hydraulically-operated gate according to claim 1 is characterized in that: The slide plate (8) and the seat plate (1) are fixedly connected by welding.

4. The self-centering, pushing and sliding structure for a hydraulically-operated gate according to any one of claims 1 to 3, characterized in that: The elastic body (7) is a rubber elastic block.

5. The self-centering, pushing and sliding structure for a hydraulically-operated gate according to any one of claims 1 to 3, characterized in that: The bayonet gap f value is 5-10mm.

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