Hydraulic cylinder for engineering ship

Abstract

The utility model provides a hydraulic cylinder for an engineering ship, which belongs to the technical field of hydraulic cylinders and comprises a hydraulic cylinder body. The hydraulic rod is connected into the hydraulic cylinder main body in a sliding manner; the buffering structure comprises a limiting plate, an elastic groove, a spring and a buffering plate, the elastic groove is formed in the upper inner wall of the hydraulic cylinder body, the limiting plate is fixedly connected to the circumferential surface of the hydraulic rod, the spring is fixedly connected to the inner wall of the elastic groove, and the buffering plate is fixedly connected to the lower end of the spring; by means of the device, the buffering structure is additionally arranged in the hydraulic cylinder body, and the problem that the service life of the oil cylinder is shortened due to long-term impact of the piston on the inner wall of the oil cylinder is effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to hydraulic cylinder technical field, concretely relates to an engineering ship hydraulic cylinder. BACKGROUND

[0002] The engineering ship hydraulic cylinder is a key hydraulic actuating element specially designed for offshore engineering vessels. It uses hydraulic oil as the transmission medium and achieves the reciprocating motion of the piston through the change of pressure and flow, thereby completing various complex tasks such as piling, lifting, pipe laying, and grab operation. These hydraulic cylinders have high strength, corrosion resistance, good sealing performance, and other characteristics, can adapt to harsh working environments at sea, withstand high loads and vibrations, and ensure that the engineering ship can work stably and efficiently even in rough sea conditions. In addition, the engineering ship hydraulic cylinder is usually equipped with advanced safety protection devices and position feedback systems to ensure safe operation and improve work accuracy.

[0003] In the prior art, the engineering ship hydraulic cylinder does not have a buffer structure inside, and the piston hits the cylinder cover at the end of the stroke, which can easily cause damage to the cylinder and reduce the service life of the hydraulic cylinder. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an engineering ship hydraulic cylinder, which aims to solve the problem of the lack of a buffer structure inside the engineering ship hydraulic cylinder in the prior art, the piston hitting the cylinder cover at the end of the stroke, and the long-term impact causing damage to the cylinder and reducing the service life of the hydraulic cylinder.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] An engineering ship hydraulic cylinder, comprising:

[0007] A hydraulic cylinder body;

[0008] A hydraulic rod, which is slidingly connected in the hydraulic cylinder body;

[0009] A buffer structure, which comprises a limiting plate, an elastic groove, a spring, and a buffer plate, the elastic groove is opened in the upper inner wall of the hydraulic cylinder body, the limiting plate is fixedly connected to the circumferential surface of the hydraulic rod, the spring is fixedly connected to the inner wall of the elastic groove, and the buffer plate is fixedly connected to the lower end of the spring; and

[0010] A piston, which is fixedly connected to the lower part of the circumferential surface of the hydraulic rod.

[0011] As a preferred scheme of the utility model, the surface of the hydraulic cylinder main body is equipped with a heat dissipation structure, the heat dissipation structure comprises annular blocks, mounting rods and heat dissipation blocks, the mounting rods and the heat dissipation blocks are respectively equipped with multiple, the hydraulic cylinder main body is fixedly connected to the circumferential surface of the hydraulic cylinder main body, multiple mounting rods are fixedly connected to the upper and lower ends of the hydraulic cylinder main body respectively, and multiple heat dissipation blocks are slidingly connected to the surfaces of multiple mounting rods respectively.

[0012] As a preferred scheme of the utility model, the upper end of the hydraulic rod is fixedly connected with a connecting rod, and the upper end of the connecting rod is fixedly connected with a connecting block.

[0013] As a preferred scheme of the utility model, the circumferential surface of the hydraulic cylinder main body is fixedly connected with two mounting seats.

[0014] As a preferred scheme of the utility model, the lower end of the hydraulic cylinder main body is provided with an oil inlet hole.

[0015] As a preferred scheme of the utility model, the circumferential surface of the hydraulic cylinder main body is provided with two pressure relief holes, and a pressure relief plug is threadedly connected in each pressure relief hole.

[0016] Compared with the prior art, the utility model has the beneficial effects that:

[0017] 1、In the scheme, the piston drives the hydraulic rod to slide in the hydraulic cylinder main body, when the piston moves up by a certain distance, the limiting plate is in contact with the surface of the buffer plate, and the spring is extruded through oil pressure, so that the impact is buffered under the elastic force of the spring; by using the device, the buffer structure is additionally arranged in the hydraulic cylinder main body, thereby effectively avoiding the problem of reducing the service life of the oil cylinder caused by the long-term impact of the piston on the inner wall of the oil cylinder.

[0018] 2、In the scheme, different numbers of heat dissipation blocks are selected and installed according to different seasons, the heat dissipation blocks are connected to the circumferential surface of the mounting rod, the circumferential surface of the mounting rod is rough, and a certain force needs to be applied when the heat dissipation blocks are installed on the surface of the mounting rod, and the same force needs to be applied when the heat dissipation blocks are removed, after the heat dissipation blocks are installed, the heat dissipation blocks are in contact with the circumferential surface of the hydraulic cylinder main body, the contact area between the circumferential surface of the hydraulic cylinder main body and the outside is increased through the heat dissipation fins on the surface of the heat dissipation blocks, so that the heat dissipation function is achieved. BRIEF DESCRIPTION OF DRAWINGS

[0019] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation to the utility model.

[0020] Fig. 1 It is the first perspective view of the utility model;

[0021] Fig. 2 is a second perspective view of the utility model;

[0022] Fig. 3 is a sectional view of the utility model.

[0023] In the figure: 1, hydraulic cylinder main body; 2, piston; 3, hydraulic rod; 4, limiting plate; 5, elastic groove; 6, spring; 7, buffer plate; 8, connecting block; 9, connecting rod; 10, mounting seat; 11, annular block; 12, mounting rod; 13, heat dissipation block. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Embodiment 1

[0026] Please refer to Figs. 1-3 The utility model provides the following technical scheme:

[0027] An engineering ship hydraulic cylinder, comprising:

[0028] Hydraulic cylinder main body 1;

[0029] Hydraulic rod 3, hydraulic rod 3 is slidably connected in hydraulic cylinder main body 1;

[0030] Buffer structure, buffer structure includes limiting plate 4, elastic groove 5, spring 6 and buffer plate 7, elastic groove 5 is set up in the upper inner wall of hydraulic cylinder main body 1, limiting plate 4 is fixedly connected on the circumference surface of hydraulic rod 3, spring 6 is fixedly connected on the inner wall of elastic groove 5, buffer plate 7 is fixedly connected on the lower end of spring 6, and

[0031] Piston 2, piston 2 is fixedly connected on the lower part of the circumference surface of hydraulic rod 3.

[0032] In a specific embodiment of the present invention, a hydraulic cylinder body 1 is used for an engineering ship, and a piston 2 is connected to the lower part of the circumferential surface of a hydraulic rod 3. The hydraulic rod 3 drives the piston 2 to reciprocate in the hydraulic cylinder body 1. During each reciprocating motion, when the oil pressure enters the hydraulic cylinder body 1 from the lower oil inlet hole, the piston 2 has too much impact on the upper inner wall of the hydraulic cylinder body 1. A buffer structure is provided to prevent the piston 2 from directly hitting the upper cylinder wall. The limit plate 4 in the buffer structure is fixed on the circumferential surface of the hydraulic rod 3 close to the piston 2. The elastic groove 5 is used to install a spring 6. A buffer plate 7 is installed at the lower end of the spring 6. Each time the piston 2 moves upward, the limit plate 4 is driven by the hydraulic rod 3 to contact the lower surface of the buffer plate 7, and then the spring 6 is squeezed. The elasticity of the spring 6 buffers the impact, thereby avoiding the problem of reducing the cylinder life caused by the piston 2 hitting the inner wall of the cylinder for a long time.

[0033] For details, please refer to Figs. 1-3 A heat dissipation structure is provided on the surface of the hydraulic cylinder body 1, and the heat dissipation structure includes an annular block 11, a mounting rod 12 and a heat dissipation block 13. There are multiple mounting rods 12 and heat dissipation blocks 13 respectively. The hydraulic cylinder body 1 is fixedly connected to the circumferential surface of the hydraulic cylinder body 1, and multiple mounting rods 12 are respectively fixedly connected to the upper and lower ends of the hydraulic cylinder body 1, and multiple heat dissipation blocks 13 are respectively slidably connected to the surfaces of the multiple mounting rods 12.

[0034] In this embodiment: the heat dissipation mechanism plays a certain heat dissipation function, which is used to conduct and dissipate the heat in the oil pressure in the hydraulic cylinder main body 1. The annular block 11 is fixedly connected to the circumferential surface of the hydraulic cylinder main body 1. The upper and lower ends of the annular block 11 are fixedly connected with multiple heat dissipation blocks 13. Depending on the season, different numbers of heat dissipation blocks 13 are selected to be installed, and the heat dissipation blocks 13 are connected to the circumferential surface of the mounting rod 12. The circumferential surface of the mounting rod 12 is rough. A certain force needs to be applied when the heat dissipation block 13 is installed on the surface of the mounting rod 12. Similarly, a certain force needs to be applied when removing the heat dissipation block 13. After the heat dissipation block 13 is installed, it contacts the circumferential surface of the hydraulic cylinder main body 1. Through the heat dissipation fins on the surface of the heat dissipation block 13, the contact area between the circumferential surface of the hydraulic cylinder main body 1 and the outside world is increased, thereby playing a heat dissipation function. The heat dissipation block 13 is made of thermally conductive material.

[0035] For details, please refer to Figs. 1-3 The upper end of the hydraulic rod 3 is fixedly connected to a connecting rod 9, and the upper end of the connecting rod 9 is fixedly connected to a connecting block 8.

[0036] In this embodiment, the connecting rod 9 serves to connect the connecting block 8, and the connecting block 8 is used to connect the equipment to be driven.

[0037] For details, please refer to Figs. 1-3 Two mounting seats 10 are fixedly connected to the circumferential surface of the hydraulic cylinder body 1.

[0038] In this embodiment: the mounting seat 10 plays the role of supporting the hydraulic cylinder body 1.

[0039] Specifically, please refer to Figs. 1-3 The lower end of the hydraulic cylinder body 1 is provided with an oil inlet hole.

[0040] In this embodiment: the oil inlet hole is used to connect the oil pipe, and the oil pressure is input through the oil pipe to make the hydraulic rod 3 move.

[0041] Specifically, please refer to Figs. 1-3 The circumferential surface of the hydraulic cylinder body 1 is provided with two pressure relief holes, and the pressure relief holes are both threadedly connected with pressure relief plugs.

[0042] In this embodiment: the pressure relief hole is provided with a thread, and the pressure relief plug is threadedly connected into the pressure relief hole. After the pressure relief plug is removed, the oil pressure in the hydraulic cylinder body 1 is discharged, and the maintenance of the device is facilitated.

[0043] The working principle and use process of the utility model: when the device is used, first, the connecting block 8 is connected with the equipment to be driven, the oil inlet hole is connected with the oil pipe for inputting oil pressure, and after the oil pressure is input into the hydraulic cylinder body 1, the oil pressure pushes the piston 2 to move upwards, the piston 2 drives the hydraulic rod 3 to slide in the hydraulic cylinder body 1, when the piston 2 moves a certain distance, the limiting plate 4 contacts the surface of the buffer plate 7, and the spring 6 is extruded through the oil pressure, and under the elastic force of the spring 6, the impact is buffered; by using the device, the buffer structure is additionally arranged in the hydraulic cylinder body 1, and the problem of reducing the service life of the oil cylinder caused by the long-term impact of the piston 2 on the inner wall of the oil cylinder is effectively avoided.

[0044] Finally, it should be pointed out that: the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A hydraulic cylinder for an engineering ship, characterized in that: include: Hydraulic cylinder body (1); A hydraulic rod (3), wherein the hydraulic rod (3) is slidably connected to the hydraulic cylinder body (1); A buffer structure, comprising a limit plate (4), an elastic groove (5), a spring (6) and a buffer plate (7), wherein the elastic groove (5) is formed on the upper inner wall of the hydraulic cylinder body (1), the limit plate (4) is fixedly connected to the circumferential surface of the hydraulic rod (3), the spring (6) is fixedly connected to the inner wall of the elastic groove (5), and the buffer plate (7) is fixedly connected to the lower end of the spring (6); and A piston (2) is fixedly connected to the lower portion of the circumferential surface of the hydraulic rod (3).

2. The hydraulic cylinder for an engineering ship according to claim 1, characterized in that: The surface of the hydraulic cylinder body (1) is provided with a heat dissipation structure, which includes an annular block (11), a mounting rod (12) and a heat dissipation block (13). A plurality of the mounting rods (12) and heat dissipation blocks (13) are provided respectively. The hydraulic cylinder body (1) is fixedly connected to the circumferential surface of the hydraulic cylinder body (1), a plurality of the mounting rods (12) are fixedly connected to the upper and lower ends of the hydraulic cylinder body (1), and a plurality of the heat dissipation blocks (13) are slidably connected to the surfaces of the plurality of mounting rods (12).

3. The hydraulic cylinder for an engineering ship according to claim 2, characterized in that: The upper end of the hydraulic rod (3) is fixedly connected to a connecting rod (9), and the upper end of the connecting rod (9) is fixedly connected to a connecting block (8).

4. The hydraulic cylinder for an engineering ship according to claim 3, characterized in that: Two mounting seats (10) are fixedly connected to the circumferential surface of the hydraulic cylinder body (1).

5. The hydraulic cylinder for an engineering ship according to claim 4, characterized in that: An oil inlet hole is provided at the lower end of the hydraulic cylinder body (1).

6. The hydraulic cylinder for an engineering ship according to claim 5, characterized in that: Two pressure relief holes are provided on the circumferential surface of the hydraulic cylinder body (1), and pressure relief plugs are threadedly connected in the two pressure relief holes.

Images