Hinge gate hydraulic oil cylinder

Abstract

The utility model discloses a hinge gate hydraulic oil cylinder, which comprises a base, a hydraulic oil cylinder, a hydraulic oil cylinder and a hydraulic oil cylinder, the cylinder barrel is arranged on the base, and the cylinder barrel is communicated with the first end of the oil duct; the first connecting piece is arranged on the base, and the first connecting piece is communicated with the second end of the oil duct; and the second connecting piece is communicated with the oil inlet hole, and the second connecting piece is in threaded connection with the first connecting piece. Compared with the prior art, communication between the cylinder barrel and the external oil inlet hole is achieved through connection of the first connecting piece and the second connecting piece, the first connecting piece and the second connecting piece are in threaded connection, the structural compactness of the connecting position is improved, and the impact resistance and collision resistance of the connecting position can be improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic gate technology in water conservancy projects, and in particular to a hydraulic cylinder for a hinge gate. Background Technology

[0002] A hydraulic sluice gate is a structure primarily used for blocking and releasing water. Closing the gate can control floods and tides, and raise the water level upstream to meet the needs of upstream water intake, power generation, or navigation. The hydraulic cylinder is the driving mechanism of the hydraulic sluice gate and plays a crucial role. Traditional hydraulic sluice gates typically use rubber hydraulic hoses for flexible connection between the hydraulic cylinder and steel oil pipes. During the opening and closing of the sluice gate, the hydraulic hoses undergo synchronous oscillating motion. Over long-term operation, these hoses are easily impacted and collided with by hard objects such as stones or wooden stakes in the water, causing localized damage to the hydraulic hoses, leading to hydraulic oil leakage, and ultimately rendering the sluice gate unable to open or close, resulting in serious consequences.

[0003] In addition, the guide inside the traditional hydraulic cylinder is made of plastic guide ring. Since the hydraulic cylinder is subjected to lateral force during actual operation, the traditional plastic guide is prone to uneven compression deformation on one side, which can cause internal leakage in the hydraulic cylinder. Ultimately, this will also prevent the hydraulic sluice gate from opening and closing, resulting in serious consequences. Utility Model Content

[0004] The purpose of this utility model is to provide a hydraulic cylinder for a hinge gate, which improves the sealing performance of the connection between the hydraulic cylinder and the steel oil pipe, and prevents hydraulic oil leakage and the inability to open or close the hydraulic sluice gate due to damage to the hydraulic hose.

[0005] This utility model provides a hinge brake hydraulic cylinder, comprising:

[0006] A base, wherein a main oil passage is provided within the base, the main oil passage comprising a first end and a second end;

[0007] A cylinder barrel, which is mounted on the base and is connected to the first end of the main oil passage;

[0008] A first connector is disposed on the base and is connected to the second end of the main oil passage.

[0009] The second connector is connected to the oil inlet hole and is threadedly connected to the first connector.

[0010] In the hydraulic cylinder for a hinge gate as described above, preferably, the first connecting member is a first joint with an internal thread, and the second connecting member is a second joint with an external thread, wherein the internal thread can be threadedly engaged with the external thread.

[0011] In the hydraulic cylinder of the hinge gate described above, preferably, the hydraulic cylinder further includes a piston rod, the end of which has a piston, the piston rod can reciprocate within the cylinder along a first direction, and the outer circumferential surface of the piston is provided with a wear-resistant part.

[0012] In the hydraulic cylinder for a hinge gate as described above, preferably, the cylinder barrel has a guide sleeve, which is sleeved on the piston rod, and the outer circumferential surface of the guide sleeve is provided with a reinforcing part to prevent internal leakage of the hydraulic cylinder.

[0013] In the hinge gate hydraulic cylinder described above, preferably, both the wear-resistant part and the reinforcing part are welded copper structures.

[0014] In the hydraulic cylinder for hinges described above, preferably, a cylinder cover is provided at the end of the cylinder barrel away from the base, and a sealing component is provided on the inner wall surface of the cylinder cover.

[0015] In the hydraulic cylinder of the hinge gate as described above, preferably, the sealing assembly includes a first dustproof component, a first sealing component, and a second sealing component. The first dustproof component is located at the end of the cylinder cover furthest from the base, and the first sealing component is located between the first dustproof component and the second sealing component.

[0016] In the hydraulic cylinder for hinges described above, preferably, a brazed copper structure is provided on the contact surface between the cylinder cover and the cylinder barrel.

[0017] In the hinge gate hydraulic cylinder described above, preferably, the cylinder cover and the cylinder barrel are detachably connected.

[0018] In the hinge gate hydraulic cylinder described above, preferably, the cylinder barrel is welded to the base.

[0019] Compared with the prior art, this utility model achieves communication between the cylinder and the external oil inlet by connecting the first connector and the second connector. The first connector and the second connector are connected by threads, which increases the structural compactness of the connection and improves the impact resistance and collision resistance of the connection. Attached Figure Description

[0020] Figure 1 This is a perspective view of the hinge gate hydraulic cylinder provided in an embodiment of this utility model;

[0021] Figure 2 This is a cross-sectional view of the hinge gate hydraulic cylinder provided in an embodiment of this utility model;

[0022] Figure 3This is a partial cross-sectional view of the connection between the first connector and the second connector provided in an embodiment of the present invention;

[0023] Figure 4 This is a cross-sectional view of the piston rod provided in an embodiment of the present invention;

[0024] Figure 5 This is a perspective view of the cylinder head provided in an embodiment of this utility model;

[0025] Figure 6 This is a cross-sectional view of the cylinder head provided in an embodiment of this utility model;

[0026] Figure 7 This is a perspective view of the first sealing element provided in an embodiment of the present invention;

[0027] Figure 8 This is a cross-sectional view of the first sealing element provided in an embodiment of this utility model;

[0028] Figure 9 This is a perspective view of the second sealing element provided in an embodiment of the present invention;

[0029] Figure 10 This is a cross-sectional view of the second sealing element provided in an embodiment of this utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10-Base, 11-Main oil passage;

[0032] 20-Cylinder;

[0033] 30-First connector, 31-First joint, 311-SUA flange joint, 312-Receiving cavity, 313-First connecting oil passage, 314-Internal threaded part;

[0034] 40 - Second connector, 41 - Second joint, 411 - Rotary joint, 412 - Second connecting oil passage, 413 - External threaded part;

[0035] 50-Cylinder head, 51-Sealing assembly, 511-First dustproof component, 512-First seal, 5121-Elastic seat, 5122-First oil scraper, 5133-First O-ring, 513-Second seal, 5131-Recess, 5132-Pressure-boosting elastic seat, 5133-Second O-ring, 5134-Second oil scraper;

[0036] 60-Piston rod, 61-Piston, 62-Wear-resistant part;

[0037] 70 - Guide sleeve, 71 - Reinforcing part;

[0038] 80-High strength screw;

[0039] D1 - First direction. Detailed Implementation

[0040] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0041] Reference Figures 1 to 10 As shown, this utility model provides a hinged gate hydraulic cylinder, including a base 10, a cylinder barrel 20, a first connecting member 30, and a second connecting member 40, wherein:

[0042] The base 10 is provided with a main oil passage 11, which includes a first end and a second end.

[0043] The cylinder 20 is mounted on the base 10 and is connected to the first end of the main oil passage 11, allowing oil to enter the cylinder 20 via the main oil passage 11.

[0044] The first connector 30 is disposed on the base 10. The first connector 30 is connected to the second end of the main oil passage 11. The second connector 40 is connected to the oil inlet hole. The second connector 40 is threadedly connected to the first connector 30, thereby enabling the external oil inlet hole and the cylinder 20 to be connected through the main oil passage 11.

[0045] In the embodiments provided in this application, the first connector 30 and the second connector 40 are threaded together, thereby enabling the cylinder 20 and the external oil pipe to be rigidly connected by rotation. Compared with the flexible connection used in the prior art, the connection between the first connector 30 and the second connector 40 in this application makes the structure of the hydraulic cylinder more compact. The impact resistance and impact strength of the connection are significantly improved compared with the flexible connection, which can prevent the hydraulic oil from leaking due to damage at the connection and effectively improve the service life of the hinge gate hydraulic cylinder.

[0046] In one feasible embodiment, the first connector 30 is a first joint 31 having an internal thread 314, and the second connector 40 is a second joint 41 having an external thread 413. The internal thread 314 can be threadedly engaged with the external thread 413 to connect the first joint 31 and the second joint 41.

[0047] Preferably, refer to Figure 3As shown, the first connector 31 is a SUA flange connector 311, which has a receiving cavity 312 and a first connecting oil passage 313 communicating with the second end of the oil passage. The first connecting oil passage 313 communicates with the receiving cavity 312, and an internal thread portion 314 is provided on the inner wall surface of the receiving cavity 312. The second connector 41 is a rotary connector 411, which has a second connecting oil passage 412 communicating with an external oil inlet, and an external thread portion 413 is provided on the outer circumferential surface of the rotary connector 411. When the first connector 31 and the second connector 41 are connected, with the cooperation of the internal thread portion 314 and the external thread portion 413, the rotary connector 411 is rotated in the receiving cavity 312 until the rotary connector 411 and the SUA flange connector 311 are fully tightened. At this time, the first connecting oil passage 313 and the second connecting oil passage 412 are connected to form an oil flow channel, and oil can then be transported from the oil inlet through the main oil passage 11 in the base 10 to the cylinder 20.

[0048] The first connector 31 and the second connector 41 are preferably SUA flange connector 311 and rotary connector 411, respectively. On the one hand, since the rotary connector 411 is connected to the SUA flange connector 311 in the receiving cavity 312, the connection between the two has good sealing performance, which can effectively prevent oil leakage during the oil flow process. On the other hand, both the SUA flange connector 311 and the rotary connector 411 have good corrosion resistance and strength. The connection between the rotary connector 411 and the SUA flange connector 311 is achieved by rotating the rotary connector 411, which can improve the safety and reliability of the hydraulic cylinder working process.

[0049] Reference Figure 2 as well as Figure 4 As shown, the hydraulic cylinder also includes a piston rod 60, and the end of the piston rod 60 has a piston 61. The piston rod 60 can reciprocate within the cylinder 20 along a first direction D1, where the first direction D1 is the axial direction of the cylinder 20. The outer peripheral surface of the piston 61 abuts against the inner wall surface of the cylinder 20. When the piston rod 60 moves within the cylinder 20, the piston 61 can slide along the inner wall surface of the cylinder 20. In order to reduce the friction between the piston 61 and the inner wall surface of the cylinder 20 when the piston 61 slides, a wear-resistant part 62 is provided on the outer peripheral surface of the piston 61 to reduce the wear on the inner wall surface of the cylinder 20 during the reciprocating movement of the piston rod 60.

[0050] Furthermore, the cylinder 20 has a guide sleeve 70, which is fitted onto the piston rod 60 to ensure that the piston rod 60 can always reciprocate along the first direction D1. To prevent uneven compression deformation on one side due to lateral forces during the movement of the piston rod 60, which could lead to internal leakage in the hydraulic cylinder, a reinforcing part 71 is provided on the outer circumferential surface of the guide sleeve 70. The reinforcing part 71 is used to improve the hydraulic cylinder's resistance to lateral forces, thereby enabling the hydraulic cylinder to operate safely under swing support conditions.

[0051] In one feasible embodiment, both the wear-resistant part 62 and the reinforcing part 71 are copper-welded structures. A copper-welded structure is formed by welding copper or copper alloy materials to a base material. Because copper-welded structures have good wear resistance and self-lubricating properties, their placement on the piston 61 improves its sliding performance, thereby reducing friction with the inner wall of the cylinder 20. Compared to existing plastic guide structures, copper-welded structures have higher strength. Placing a copper-welded structure on the outer circumferential surface of the guide sleeve 70 effectively improves the hydraulic cylinder's resistance to lateral forces.

[0052] In the embodiments provided in this application, reference is made to Figure 2 , Figure 5 as well as Figure 6 As shown, a cylinder cover 50 is provided at the end of the cylinder barrel 20 away from the base 10. When the cylinder cover 50 and the piston rod 60 are both installed on the cylinder barrel 20, the inner wall surface of the cylinder cover 50 is in contact with the outer peripheral surface of the piston rod 60. In order to prevent oil leakage at the connection between the cylinder cover 50 and the piston rod 60, a sealing component 51 is provided on the inner wall surface of the cylinder cover 50 so that the cylinder cover 50 and the piston rod 60 can fit tightly together.

[0053] In one feasible embodiment, the sealing assembly 51 includes a first dustproof element 511, a first sealing element 512, and a second sealing element 513. The first dustproof element 511 is located at the end of the cylinder head 50 furthest from the base 10, and the first sealing element 512 is located between the first dustproof element 511 and the second sealing element 513. The first dustproof element 511 is used to prevent external dust and impurities from entering the cylinder barrel 20 through the cylinder head 50 and contaminating the oil inside the cylinder barrel 20. Under the combined action of the first sealing element 512 and the second sealing element 513, the sealing performance between the piston rod 60 and the cylinder head 50 is enhanced to prevent oil leakage.

[0054] Preferably, the first sealing element 512 is a high-elasticity sealing ring, and two first sealing elements 512 are provided. The high-elasticity sealing ring has excellent elasticity and sealing performance. When the piston rod 60 is connected to the cylinder head 50, the high-elasticity sealing ring can undergo appropriate elastic deformation as the piston rod 60 moves, thus maintaining a tight fit with the piston rod 60 and ensuring the sealing between the cylinder head 50 and the piston rod 60. (Refer to...) Figure 7 as well as Figure 8 As shown, the high elastic sealing ring has an elastic seat 5121 in its circumference, and a first O-ring 5123 is provided inside the elastic seat 5121. The high elastic sealing ring has a first oil scraper tongue 5122 on its circumference where it contacts the piston rod 60. When the piston rod 60 moves back and forth along the first direction D1, the first oil scraper tongue 5122 can scrape off the oil adhering to the surface of the piston rod 60, thereby effectively preventing oil leakage.

[0055] Furthermore, referring to Figure 9 As shown, the second seal 513 is an H-type sealing ring. The H-type sealing ring is a bidirectional sealing ring with good sealing performance and wear resistance. When the piston rod 60 reciprocates along the first direction D1, the friction between the H-type sealing ring and the piston rod 60 is small, which helps to improve the sealing performance between the cylinder head 50 and the piston rod 60. (Refer to...) Figure 10 As shown, the outer circumferential surface of the H-type sealing ring is provided with a recessed seat 5131, and the inner circumferential surface of the H-type sealing ring is provided with two parallel pressure-boosting elastic seats 5132. Each of the two pressure-boosting elastic seats 5132 is provided with a second O-ring 5133. The circumference of the H-type sealing ring that contacts the piston rod 60 is provided with a second oil scraper tongue 5134, thereby further preventing oil leakage.

[0056] In order to improve the wear resistance and corrosion resistance of the cylinder 20, in the embodiments provided in this application, a copper welding structure is provided on the contact surface between the cylinder head 50 and the cylinder 20. Since the copper welding structure has good wear resistance, it can reduce the friction between the cylinder head 50 and the cylinder 20, thereby helping to extend the service life of the cylinder 20.

[0057] Reference Figure 2 As shown, the cylinder head 50 and the cylinder barrel 20 are detachably connected. In the embodiment provided in this application, the cylinder head 50 and the cylinder barrel 20 are connected by high-strength screws 80. High-strength screws have high strength and durability. Using high-strength screws 80 to connect the cylinder head 50 and the cylinder barrel 20 can make the connection between them more stable, thereby making the hydraulic cylinder have good safety and reliability.

[0058] To further improve the structural stability of the hydraulic cylinder, the cylinder barrel 20 is welded to the base 10 so that the cylinder barrel 20 and the base 10 form an integral whole, thereby improving the overall reliability.

[0059] Based on the above embodiments, the working process of the hydraulic cylinder of the hinge gate in this application is as follows: the piston rod 60 is connected to the hydraulic sluice gate. When the hydraulic oil flows into the cylinder 20 from the external oil inlet, the pressure inside the cylinder 20 increases, thereby pushing the piston 61 to move. The piston rod 60 moves synchronously away from the base 10. When the oil in the cylinder 20 flows back to the oil inlet, the piston 61 moves towards the base 10, and the piston rod 60 moves synchronously, thereby realizing the opening and closing of the hydraulic sluice gate.

[0060] The above description, based on the embodiments shown in the drawings, details the structure, features, and effects of this utility model. The above description is only a preferred embodiment of this utility model, but the scope of implementation of this utility model is not limited to what is shown in the drawings. Any changes made in accordance with the concept of this utility model, or modifications to equivalent embodiments, that do not exceed the spirit covered by the specification and drawings, shall be within the protection scope of this utility model.

Claims

1. A hydraulic cylinder for a hinge gate, characterized in that, include: A base, wherein a main oil passage is provided within the base, the main oil passage comprising a first end and a second end; A cylinder barrel, which is mounted on the base and is connected to the first end of the main oil passage; A first connector is disposed on the base and is connected to the second end of the main oil passage. The second connector is connected to the oil inlet hole and is threadedly connected to the first connector.

2. The hinge gate hydraulic cylinder according to claim 1, characterized in that, The first connector is a first joint with an internal thread, and the second connector is a second joint with an external thread. The internal thread can be threadedly engaged with the external thread.

3. The hinge gate hydraulic cylinder according to claim 1, characterized in that, The hydraulic cylinder also includes a piston rod, the end of which has a piston. The piston rod can reciprocate within the cylinder along a first direction, and the outer circumferential surface of the piston is provided with a wear-resistant part.

4. The hinge gate hydraulic cylinder according to claim 3, characterized in that, The cylinder has a guide sleeve inside, which is fitted onto the piston rod. The outer circumferential surface of the guide sleeve is provided with a reinforcing part to prevent internal leakage of the hydraulic cylinder.

5. The hinge gate hydraulic cylinder according to claim 4, characterized in that, Both the wear-resistant part and the reinforcing part are copper-welded structures.

6. The hinge gate hydraulic cylinder according to claim 1, characterized in that, The cylinder is provided with a cylinder cover at the end away from the base, and the inner wall surface of the cylinder cover is provided with a sealing component.

7. The hinge gate hydraulic cylinder according to claim 6, characterized in that, The sealing assembly includes a first dustproof component, a first sealing component, and a second sealing component. The first dustproof component is located at the end of the cylinder head furthest from the base, and the first sealing component is located between the first dustproof component and the second sealing component.

8. The hinge gate hydraulic cylinder according to claim 6, characterized in that, The contact surface between the cylinder head and the cylinder barrel is provided with a copper welding structure.

9. The hinge gate hydraulic cylinder according to claim 6, characterized in that, The cylinder head is detachably connected to the cylinder barrel.

10. The hinge gate hydraulic cylinder according to claim 1, characterized in that, The cylinder is welded to the base.

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