Hydraulic dam

Abstract

The utility model discloses a hydraulic dam, which is provided with a cylinder barrel; the rear cover is mounted at the rear end of the cylinder barrel; the front sealing sleeve is mounted at the front end of the cylinder barrel; the piston is installed in the cylinder barrel in a sliding mode, and the interior of the cylinder barrel is divided into a first cavity and a second cavity by the piston; the first end of the piston rod is connected with the piston, and the second end of the piston rod extends out of the front sealing sleeve. And the rotary joint is rotationally mounted on the cylinder barrel and can be communicated with the first cavity and / or the second cavity, even if the oil cylinder swings, the joint can also do circumferential rotation, the oil pipe is fixed, and the oil pipe cannot be snapped and equipment cannot be damaged.

Description

Technical Field

[0001] This utility model belongs to the field of hydraulic dam technology, and in particular relates to a hydraulic dam. Background Technology

[0002] In the process of realizing this utility model, the inventors discovered that the prior art has at least the following problems:

[0003] In traditional technology, the joints of hydraulic cylinders are fixed structures. When the oil pipes connecting the cylinders are silted up with mud or frozen, if the gate is raised or lowered, the oil pipes will be pulled off or torn as the cylinders swing, causing damage to the equipment.

[0004] CN209370193U - A hydraulic cylinder that can effectively prevent the piston rod and piston from rotating around the axis of the hydraulic cylinder, discloses a hydraulic cylinder that can effectively prevent the piston rod and piston from rotating around the axis of the hydraulic cylinder, including a barrel body and an anti-rotation rod. A blind hole is opened on one side wall of the cylinder head, and the other end of the piston rod passes through the blind hole and exits the cylinder head. A seal is fitted on the piston rod. An oil outlet pipe is fixedly embedded in the cylinder head, and the top end of the oil outlet pipe communicates with the blind hole. The cylinder tail, cylinder head and barrel body form a closed cavity. The other end of the anti-rotation rod passes through the seal, exits the piston, passes through the vertical plate and inserts into the cylinder tail. The cylinder tail is fixedly connected to the anti-rotation rod, but it still cannot solve the above-mentioned technical problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide a hydraulic dam that can rotate in a circular motion even if the oil cylinder swings, so that the oil pipe does not move and will not break the oil pipe or damage the equipment.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a hydraulic dam, having:

[0007] Cylinder;

[0008] The rear cover is installed at the rear end of the cylinder.

[0009] A front sealing sleeve is installed at the front end of the cylinder.

[0010] A piston is slidably mounted inside the cylinder, and the piston divides the interior of the cylinder into a first chamber and a second chamber.

[0011] A piston rod, the first end of which is connected to the piston, and the second end of which extends out of the front sealing sleeve;

[0012] A rotary joint is rotatably mounted on the cylinder, and the rotary joint is capable of communicating with the first cavity and / or the second cavity.

[0013] The cylinder is also provided with a hinge shaft on its outer periphery, and the rotary joint is rotatably mounted on the hinge shaft.

[0014] Each side of the hinge shaft is provided with a rotary joint, and the two rotary joints are respectively connected to the first cavity and the second cavity.

[0015] The rotary joint has:

[0016] A sleeve with an installation hole inside;

[0017] The inner core is rotatably installed in the mounting hole of the sleeve;

[0018] Oil passage grooves are provided on the inner core;

[0019] A connecting oil passage is provided inside the inner core, and the connecting oil passage is connected to the oil passage groove;

[0020] An oil outlet is provided inside the inner core. The oil outlet is connected to the connecting oil passage and passes through the inner core to connect with the outside.

[0021] A connector is connected to the sleeve, and the connector is connected to the oil passage groove.

[0022] The sleeve and the inner core are sealed by a sealing structure.

[0023] The sealing structure is a connecting sealing ring; the inner core is provided with a second mounting groove for installing the connecting sealing ring.

[0024] The inner core has a connector at its first end, a first mounting groove on the connector, a mounting sealing ring on the first mounting groove, and an inner hole groove on the inner wall of the mounting hole of the sleeve that is adapted to the oil passage groove. The connector is connected to the inner hole groove.

[0025] The inner core has an end face at its second end, and the end face is sealed to the end of the sleeve by an end face sealing ring. The inner core is also provided with connecting bolts.

[0026] During the cylinder's oscillation process, the rotary joint can rotate relative to the cylinder, preventing the oil pipe from rotating with the cylinder.

[0027] One of the above technical solutions has the following advantages or beneficial effects: even if the oil cylinder swings, the joint can rotate in a circular motion, the oil pipe will not move, and the oil pipe will not be broken or the equipment damaged. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of the hydraulic dam provided in the embodiments of this utility model;

[0029] Figure 2 for Figure 1 A schematic diagram of the cylinder structure of a hydraulic dam;

[0030] Figure 3 for Figure 1A schematic diagram of the cylinder structure of a hydraulic dam;

[0031] Figure 4 for Figure 1 A schematic diagram of the cylinder structure of a hydraulic dam;

[0032] Figure 5 for Figure 1 A schematic diagram of the cylinder structure of a hydraulic dam;

[0033] Figure 6 for Figure 1 A schematic diagram of the rotary joint structure of a hydraulic dam;

[0034] Figure 7 for Figure 1 A schematic diagram of the rotary joint structure of a hydraulic dam;

[0035] Figure 8 for Figure 1 A schematic diagram of the rotary joint structure of a hydraulic dam;

[0036] Figure 9 for Figure 1 A schematic diagram of the rotary joint structure of a hydraulic dam;

[0037] Figure 10 for Figure 1 A schematic diagram of the rotary joint structure of a hydraulic dam;

[0038] Figure 11 for Figure 1 A schematic diagram of the rotary joint structure of a hydraulic dam;

[0039] Figure 12 for Figure 1 A schematic diagram of the rotary joint structure of a hydraulic dam;

[0040] Figure 13 for Figure 1 A schematic diagram of the rotary joint structure of a hydraulic dam;

[0041] The markings in the above figures are as follows: 1. Sleeve, 11. Mounting hole, 12. Inner hole groove, 2. Inner core, 21. Oil passage groove, 211. Connecting oil passage, 22. Oil outlet hole, 23. Connector, 231. First mounting groove, 24. Second mounting groove, 25. End face, 3. Joint, 4. Connecting bolt, 5. Mounting sealing ring, 6. Connecting sealing ring, 7. End face sealing ring;

[0042] 81. Cylinder barrel, 82. Rear cover, 83. Front sealing sleeve, 84. Oil port seat, 85. Piston rod, 86. Hinge shaft, 87. Piston, 88. First chamber, 89. Second chamber. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] See Figures 1-13 A hydraulic dam comprises: a cylinder 81; a rear cover 82 installed at the rear end of the cylinder 81; a front sealing sleeve 83 installed at the front end of the cylinder 81; a piston 87 slidably installed inside the cylinder 81, the piston dividing the interior of the cylinder 81 into a first cavity 88 and a second cavity 89; a piston rod 85, the first end of which is connected to the piston 87, and the second end of the piston rod 85 extending out of the front sealing sleeve 83; and a rotary joint rotatably installed on the cylinder 81, the rotary joint being capable of communicating with the first cavity 88 and / or the second cavity 89. Even if the cylinder swings, the joint can rotate circumferentially, the oil pipe remains stationary, and the oil pipe will not be broken, thus preventing damage to the equipment.

[0045] A hinge shaft 86 is also provided on the outer periphery of the cylinder 81, and a rotary joint is rotatably mounted on the hinge shaft 86. A threaded hole is provided at the end of the hinge shaft for mounting the rotary joint. A rotary joint is provided on each side of the hinge shaft 86. The two rotary joints are respectively connected to the first cavity and the second cavity, and serve as the inlet and outlet of hydraulic oil in the two cavities, thereby realizing the movement of the piston 87.

[0046] The rotary joint comprises: a sleeve 1 with a mounting hole 11 inside; an inner core 2 rotatably mounted within the mounting hole 11 of the sleeve 1; an oil passage groove 21 on the inner core 2; a connecting oil passage 211 within the inner core 2, which is connected to the oil passage groove 21; and an oil outlet 22 within the inner core 2, which is connected to the connecting oil passage 211 and passes through the inner core 2 to connect to the outside. The sleeve 1 can rotate around the inner core 2. Even if the hydraulic cylinder swings, the joint 3 can still rotate circumferentially without moving the oil pipe, thus preventing breakage and equipment damage. The joint 3 on the sleeve 1 is connected to the oil outlet 22 via the oil passage groove 21, the connecting oil passage 211, and the oil passage groove 211, maintaining constant connection even during the rotation of the sleeve 1.

[0047] Connector 3 is connected to sleeve 1 and is connected to oil passage groove 21. Connector 3 on sleeve 1 is connected to oil outlet 22 through oil passage groove 21 and connecting oil passage 211, and can remain connected even when sleeve 1 is rotating.

[0048] The sleeve 1 and the inner core 2 are sealed by a sealing structure. The sealing structure is a connecting sealing ring 6; the inner core 2 is provided with a second mounting groove 24 for mounting the connecting sealing ring 6, which serves as a seal.

[0049] The first end of the inner core 2 is provided with a connector 23, which can be connected to a hydraulic cylinder.

[0050] The connector 23 is provided with a first mounting groove 231, and a sealing ring 5 is provided on the first mounting groove 231 to provide a sealing function.

[0051] The inner wall of the mounting hole 11 of the sleeve 1 is provided with an inner hole groove 12 that is adapted to the oil passage groove 21, and the connector 3 is connected to the inner hole groove 12. The connector 3 on the sleeve 1 is connected to the oil outlet hole 22 through the oil passage groove 21 and the connecting oil passage 211, and can remain connected even when the sleeve 1 is rotating.

[0052] The inner core 2 has an end face on its second end, and the end face is sealed to the end of the sleeve 1 by an end face sealing ring 7, which serves as a seal.

[0053] The inner core 2 is also provided with connecting bolts 4. The inner core 2 is fixedly connected to the hydraulic cylinder through the connecting bolts 4, and the sleeve 1 can rotate around the inner core 2.

[0054] With the above structure, even if the cylinder swings, the joint can rotate in a circle, while the oil pipe remains stationary, preventing it from breaking and damaging the equipment.

[0055] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0056] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A hydraulic dam, characterized in that, have: Cylinder; The rear cover is installed at the rear end of the cylinder. A front sealing sleeve is installed at the front end of the cylinder. A piston is slidably mounted inside the cylinder, and the piston divides the interior of the cylinder into a first chamber and a second chamber. A piston rod, the first end of which is connected to the piston, and the second end of which extends out of the front sealing sleeve; A rotary joint is rotatably mounted on the cylinder, and the rotary joint is capable of communicating with the first cavity and / or the second cavity.

2. The hydraulic dam as described in claim 1, characterized in that, The cylinder is also provided with a hinge shaft on its outer periphery, and the rotary joint is rotatably mounted on the hinge shaft.

3. The hydraulic dam as described in claim 2, characterized in that, Each side of the hinge shaft is provided with a rotary joint, and the two rotary joints are respectively connected to the first cavity and the second cavity.

4. The hydraulic dam as described in claim 3, characterized in that, The rotary joint has: A sleeve with an installation hole inside; The inner core is rotatably installed in the mounting hole of the sleeve; Oil passage grooves are provided on the inner core; A connecting oil passage is provided inside the inner core, and the connecting oil passage is connected to the oil passage groove; An oil outlet is provided inside the inner core. The oil outlet is connected to the connecting oil passage and passes through the inner core to connect with the outside. A connector is connected to the sleeve, and the connector is connected to the oil passage groove.

5. The hydraulic dam as described in claim 4, characterized in that, The sleeve and the inner core are sealed by a sealing structure.

6. The hydraulic dam as described in claim 5, characterized in that, The sealing structure is a connecting sealing ring; the inner core is provided with a second mounting groove for installing the connecting sealing ring.

7. The hydraulic dam as described in claim 6, characterized in that, The inner core has a connector at its first end, a first mounting groove on the connector, a mounting sealing ring on the first mounting groove, and an inner hole groove on the inner wall of the mounting hole of the sleeve that is adapted to the oil passage groove. The connector is connected to the inner hole groove.

8. The hydraulic dam as described in claim 7, characterized in that, The inner core has an end face at its second end, and the end face is sealed to the end of the sleeve by an end face sealing ring. The inner core is also provided with connecting bolts.

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