A new type of single-acting telescopic anti-blowout hydraulic cylinder

Abstract

The utility model relates to the technical field of oil cylinders, and in particular to a novel single-acting telescopic anti-blowout hydraulic oil cylinder, which can promote heat dissipation and cooling of hydraulic oil through a heat dissipation mechanism, prevent the hydraulic oil temperature from being too high, ensure the service life of the hydraulic oil, and is easy to use, reliable and practical. The utility model comprises a bottom plate, a cylinder body, a piston plate and a piston rod, the cylinder body is fixedly mounted on the upper end of the bottom plate, a chamber is arranged in the cylinder body, and the piston rod is fixedly mounted on the upper end of the piston plate; the utility model also comprises a piston ring, a sliding cylinder, an oil storage tank, an oil supply mechanism, an oil discharge mechanism and a heat dissipation mechanism, the sliding cylinder is fixedly mounted on the upper end of the piston ring, the piston ring is slidably mounted in the chamber of the cylinder body up and down, the piston ring is connected to the side wall of the cylinder chamber in a sliding seal, a cavity is arranged in the sliding cylinder, the lower end of the sliding cylinder cavity is communicated with the chamber of the cylinder body, the piston plate is slidably mounted in the cavity of the sliding cylinder up and down, and the piston plate and the cavity are connected in a sealing sliding manner.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, in particular to a novel single-acting telescopic anti-blowout hydraulic oil cylinder. Background Art

[0002] The oil cylinder is a device used to push heavy objects, which has a wide range of applications in the field of machinery. A single-acting oil cylinder refers to a hydraulic cylinder that can only push the cylinder plunger out from one direction by pressure. In the prior art, the utility model patent with patent application number 202223449736.6 discloses an adjustable buffer hydraulic oil cylinder, which is mainly composed of a cylinder body, a piston and a push rod. The piston is slidably installed in the cylinder body, and the push rod is fixedly installed on the upper end of the piston; when it is used, the hydraulic oil is filled into the cylinder body so that the hydraulic oil pushes the piston and the push rod up; the inventor believes that there are the following problems in its use. When it is used in some high-temperature environments, such as in the workshops of steel mills or foundries, the hydraulic cylinder in the cylinder body is in a high-temperature state for a long time, which easily causes the additives in the hydraulic oil to decompose and oxidize, resulting in a reduction in the service life of the hydraulic oil and poor reliability in use. Therefore, a cylinder that can promote heat dissipation and cooling of the hydraulic oil is needed. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a new single-acting telescopic anti-blowout hydraulic cylinder which can promote the heat dissipation and cooling of the hydraulic oil through a heat dissipation mechanism, prevent the hydraulic oil from being overheated, ensure the service life of the hydraulic oil, and is easy to use and has high reliability and practicality.

[0004] The cam is provided with an oil pump, and an oil pump is provided with an oil pump, and an oil pump is provided with an oil pump, and an oil pump is provided with an oil pump. A heat dissipation mechanism is provided, and the heat dissipation mechanism has a heat dissipation function; when it is used in a high-temperature environment, when lifting a heavy object through the piston rod, the oil supply mechanism passes the oil in the oil storage tank into the cylinder chamber, thereby pushing the sliding cylinder to rise. After the sliding cylinder rises to the highest point in the cylinder chamber, the hydraulic oil pushes the piston plate to rise, thereby causing the piston rod to rise and lift the heavy object. When the piston rod needs to lift other heavy objects, the oil supply mechanism is first closed, and then the oil discharge mechanism is opened. After that, the sliding cylinder falls downward under the action of gravity, thereby causing the oil in the cylinder chamber to flow back to the oil storage tank through the oil discharge mechanism. At the same time, the oil in the oil discharge mechanism is dissipated and cooled by the heat dissipation mechanism, and then the next heavy object is placed on the upper end of the piston rod, and then the piston rod is raised in the above manner to lift it; when it is used for a long time and at a high frequency, the heat dissipation mechanism can be used to promote the heat dissipation and cooling of the hydraulic oil, thereby preventing the hydraulic oil temperature from being too high and ensuring the service life of the hydraulic oil. It is easy to use and has high reliability and practicality.

[0005] Preferably, the oil supply mechanism includes a delivery pump, an oil pipe A and an oil supply pipe. The delivery pump is fixedly mounted on the base plate. The input end of the delivery pump is connected to the oil storage tank through the oil pipe A. The output end of the delivery pump is connected to the lower part of the cylinder chamber through the oil supply pipe. A valve is provided on the oil supply pipe. When supplying oil to the lower part of the cylinder chamber, the valve on the oil supply pipe is opened to allow the hydraulic oil in the oil storage tank to enter the cylinder chamber via the oil pipe A, the delivery pump and the oil supply pipe in sequence, so that the hydraulic oil pushes the piston ring and the piston plate to rise. This facilitates the delivery of the hydraulic oil.

[0006] Preferably, the oil discharge mechanism comprises an oil discharge pipe, a cylinder A, multiple groups of heat exchange pipes and a cylinder B. The input end of the oil discharge pipe is connected to the lower part of the cylinder chamber. A valve is arranged on the oil discharge pipe. The output end of the oil discharge pipe is connected to the cylinder A. The left ends of the multiple groups of heat exchange pipes are connected to the cylinder A. The right ends of the multiple groups of heat exchange pipes are connected to the cylinder B. The output end of the cylinder B is connected to the oil storage tank through the return pipe. The multiple groups of heat exchange pipes are all located in the heat dissipation mechanism. When the hydraulic oil in the cylinder chamber needs to be discharged, the valve on the oil supply pipe is closed. The valve on the oil drain pipe is opened, and then the sliding cylinder and the piston plate move downward under the action of gravity, thereby pushing the hydraulic oil in the cylinder chamber into the cylinder A through the oil drain pipe, and then the hydraulic oil enters the multiple groups of heat exchange tubes through the cylinder A, and the hydraulic oil exchanges heat with the heat dissipation mechanism through the tube walls of the multiple groups of heat exchange tubes, so that the hydraulic oil in the multiple groups of heat exchange tubes is cooled, and then the cooled hydraulic oil enters the oil storage tank through the return pipe and can be used again; the discharge and cooling of the hydraulic oil are convenient.

[0007] Preferably, the heat dissipation mechanism includes a cylinder, a liquid inlet pipe, a discharge pipe and a water pump. A bracket is provided on the cylinder, and the cylinder is fixedly mounted on the bottom plate through the bracket. A water cavity is provided in the cylinder, and water is provided in the water cavity. Multiple groups of heat exchange tubes are immersed in the water in the water cavity. A liquid inlet pipe is provided at the upper part of the cylinder, and a discharge pipe is provided at the lower part of the cylinder. A valve is provided on the discharge pipe. The output end of the discharge pipe is connected to the water pump, and a delivery pipe is provided at the output end of the water pump. A thermometer is provided on the cylinder; when the hydraulic oil enters the multiple groups of heat exchange tubes, After entering the tube, the hydraulic oil exchanges heat with the water in the water cavity of the cylinder through the tube walls of multiple groups of heat exchange tubes, so that the hydraulic oil in the multiple groups of heat exchange tubes is cooled. Then the hydraulic oil flows back to the oil storage tank through cylinder B and the return pipe for reuse. At the same time, the temperature of the water in the water cavity of the cylinder is detected by a thermometer. When the temperature is too high, the valve on the discharge pipe is opened to discharge the water in the cylinder through the discharge pipe and the water pump and then collect it. Then, new cooling water can be added to the water cavity of the cylinder through the liquid inlet pipe; this facilitates the heat dissipation and cooling of the hydraulic oil.

[0008] Preferably, a one-way valve is provided on the oil supply pipe; through the above arrangement, the hydraulic oil is prevented from flowing reversely on the oil supply pipe, thereby improving reliability.

[0009] Preferably, limit blocks are provided at the upper and lower parts of the cylinder chamber and the lower part of the sliding cylinder cavity; by providing the limit blocks in the cylinder chamber, the piston ring is prevented from overtravel and from jumping out of the upper part of the cylinder, which has high reliability; by providing the limit blocks in the lower part of the sliding cylinder cavity, the piston plate is prevented from falling below the sliding cylinder, which improves reliability.

[0010] Preferably, the cylinder body is provided with a pressure relief pipe connected to the chamber, and a pressure relief valve is provided on the pressure relief pipe; when the hydraulic oil pressure in the cylinder body chamber is too high, the pressure relief valve automatically opens, so that the hydraulic oil is automatically discharged through the pressure relief pipe, preventing the cylinder body from bursting due to excessive pressure, thereby improving safety.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the heat dissipation and cooling of the hydraulic oil can be promoted through the heat dissipation mechanism, the over-high temperature of the hydraulic oil is prevented, the service life of the hydraulic oil is ensured, and the utility model is easy to use and has high reliability and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a first axonometric structural schematic diagram of the utility model;

[0013] Figure 2 It is a cross-sectional structural diagram of the cylinder body, piston plate and piston rod;

[0014] Figure 3 It is a main structural schematic diagram of the utility model;

[0015] Figure 4 It is a second axonometric structural schematic diagram of the utility model;

[0016] Figure 5 It is a schematic diagram of the cross-sectional structure of the cylinder;

[0017] Figure 6 It is a schematic diagram of the structure of the heat exchange tube, cylinder A and cylinder B.

[0018] Markings in the attached figure: 1. Base plate; 2. Cylinder body; 3. Piston plate; 4. Piston rod; 5. Piston ring; 6. Sliding cylinder; 7. Oil storage tank; 8. Delivery pump; 9. Oil pipe A; 10. Oil supply pipe; 11. Oil discharge pipe; 12. Cylinder A; 13. Heat exchange pipe; 14. Cylinder B; 15. Reflux pipe; 16. Cylinder body; 17. Liquid inlet pipe; 18. Discharge pipe; 19. Water pump; 21. Limit block; 22. Pressure relief pipe. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example 1

[0021] like Figures 1 to 6The oil cylinder of the utility model comprises a bottom plate 1, a cylinder body 2, a piston plate 3, a piston rod 4, a piston ring 5, a sliding cylinder 6, an oil storage tank 7, an oil supply mechanism, an oil discharge mechanism and a heat dissipation mechanism. The cylinder body 2 is fixedly mounted on the upper end of the bottom plate 1, a chamber is arranged in the cylinder body 2, the piston rod 4 is fixedly mounted on the upper end of the piston plate 3, the sliding cylinder 6 is fixedly mounted on the upper end of the piston ring 5, the piston ring 5 is slidably mounted in the chamber of the cylinder body 2, the piston ring 5 is connected to the side wall of the chamber of the cylinder body 2 by sliding sealing, and a hollow space is arranged in the sliding cylinder 6. The lower end of the sliding cylinder 6 cavity is connected with the chamber of the cylinder body 2, the piston plate 3 is installed in the cavity of the sliding cylinder 6 for sliding up and down, the piston plate 3 and the cavity are sealed and slidably connected, the upper end of the piston rod 4 is located above the sliding cylinder 6, the output end of the oil supply mechanism is connected with the lower part of the chamber of the cylinder body 2, the oil supply mechanism has an oil supply function, the input end of the discharge mechanism is connected with the lower part of the chamber of the cylinder body 2, the oil discharge mechanism has an oil discharge function, the output end of the oil discharge mechanism and the input end of the oil supply mechanism are both connected to the oil storage tank 7, and the upper end of the oil discharge mechanism A heat dissipation mechanism is provided, and the heat dissipation mechanism has a heat dissipation function; when it is used in a high-temperature environment, when lifting a heavy object through the piston rod 4, the oil supply mechanism passes the oil in the oil storage tank 7 into the chamber of the cylinder body 2, thereby pushing the sliding cylinder 6 to rise, and after the sliding cylinder 6 rises to the highest point in the chamber of the cylinder body 2, the hydraulic oil pushes the piston plate 3 to rise, thereby causing the piston rod 4 to rise and lift the heavy object. When the piston rod 4 needs to lift other heavy objects, the oil supply mechanism is first closed, and then the oil discharge mechanism is opened. After that, the sliding cylinder 6 falls downward under the action of gravity, thereby causing the oil in the chamber of the cylinder body 2 to flow back to the oil storage tank 7 through the oil discharge mechanism, and at the same time, the oil in the oil discharge mechanism is dissipated and cooled by the heat dissipation mechanism, and then the next heavy object is placed on the upper end of the piston rod 4, and then the piston rod 4 is raised and lifted in the above manner; when it is used for a long time and at a high frequency, the heat dissipation mechanism can promote the heat dissipation and cooling of the hydraulic oil, prevent the hydraulic oil temperature from being too high, and ensure the service life of the hydraulic oil. It is easy to use and has high reliability and practicality.

[0022] like Figure 1 The oil supply mechanism includes a delivery pump 8, an oil pipe A9 and an oil supply pipe 10. The delivery pump 8 is fixedly installed on the base plate 1. The input end of the delivery pump 8 is connected to the oil storage tank 7 through the oil pipe A9. The output end of the delivery pump 8 is connected to the lower part of the chamber of the cylinder body 2 through the oil supply pipe 10. A valve is arranged on the oil supply pipe 10. When supplying oil to the lower part of the chamber of the cylinder body 2, the valve on the oil supply pipe 10 is opened to allow the hydraulic oil in the oil storage tank 7 to enter the chamber of the cylinder body 2 via the oil pipe A9, the delivery pump 8 and the oil supply pipe 10 in turn, so that the hydraulic oil pushes the piston ring 5 and the piston plate 3 to rise. This facilitates the delivery of the hydraulic oil.

[0023] like Figure 5 and Figure 6The oil discharge mechanism includes an oil discharge pipe 11, a cylinder A12, multiple groups of heat exchange pipes 13 and a cylinder B14. The input end of the oil discharge pipe 11 is connected to the lower part of the chamber of the cylinder body 2. A valve is arranged on the oil discharge pipe 11. The output end of the oil discharge pipe 11 is connected to the cylinder A12. The left ends of the multiple groups of heat exchange pipes 13 are connected to the cylinder A12. The right ends of the multiple groups of heat exchange pipes 13 are connected to the cylinder B14. The output end of the cylinder B14 is connected to the oil storage tank 7 through the return pipe 15. The multiple groups of heat exchange pipes 13 are all located in the heat dissipation mechanism. When the hydraulic oil in the chamber of the cylinder body 2 needs to be discharged, the supply valve is closed. The valve on the oil pipe 10 opens the valve on the oil drain pipe 11, and then the sliding cylinder 6 and the piston plate 3 move downward under the action of gravity, thereby pushing the hydraulic oil in the chamber of the cylinder body 2 into the cylinder A12 through the oil drain pipe 11, and then the hydraulic oil enters the multiple groups of heat exchange tubes 13 through the cylinder A12, and the hydraulic oil exchanges heat with the heat dissipation mechanism through the tube walls of the multiple groups of heat exchange tubes 13, so that the hydraulic oil in the multiple groups of heat exchange tubes 13 is cooled, and then the cooled hydraulic oil enters the oil storage tank 7 through the return pipe 15 and can be used again; the discharge and cooling of the hydraulic oil are convenient.

[0024] like Figure 5 The heat dissipation mechanism includes a cylinder 16, a liquid inlet pipe 17, a discharge pipe 18 and a water pump 19. A bracket is provided on the cylinder 16. The cylinder 16 is fixedly mounted on the bottom plate 1 through the bracket. A water cavity is provided in the cylinder 16. Water is provided in the water cavity. The multiple groups of heat exchange tubes 13 are immersed in the water in the water cavity. The upper part of the cylinder 16 is provided with a liquid inlet pipe 17, the lower part of the cylinder 16 is provided with a discharge pipe 18, and a valve is provided on the discharge pipe 18. The output end of the discharge pipe 18 is connected to the water pump 19. The output end of the water pump 19 is provided with a delivery pipe. A thermometer is provided on the cylinder 16; when the hydraulic oil enters the multiple groups After entering the heat exchange tube 13, the hydraulic oil exchanges heat with the water in the water cavity of the cylinder 16 through the tube wall of the multiple groups of heat exchange tubes 13, so that the hydraulic oil in the multiple groups of heat exchange tubes 13 is cooled. Then the hydraulic oil flows back to the oil storage tank 7 through the cylinder B14 and the return pipe 15 for reuse. At the same time, the temperature of the water in the water cavity of the cylinder 16 is detected by the thermometer. When the temperature is too high, the valve on the discharge pipe 18 is opened to discharge the water in the cylinder 16 through the discharge pipe 18 and the water pump 19 and collect it. Then, new cooling water is added to the water cavity of the cylinder 16 through the liquid inlet pipe 17; it is convenient to dissipate heat and cool down the hydraulic oil. A one-way valve is set on the oil supply pipe 10.

[0025] like Figure 2 Limit blocks 21 are provided at the upper and lower parts of the chamber of the cylinder body 2 and the lower part of the cavity of the sliding cylinder 6; by providing the limit block 21 in the chamber of the cylinder body 2, the piston ring 5 is prevented from overtravel and from jumping out of the upper part of the cylinder body 2, which has high reliability; by providing the limit block 21 at the lower part of the cavity of the sliding cylinder 6, the piston plate 3 is prevented from falling below the sliding cylinder 6, which improves reliability.

[0026] Example 2

[0027] like Figure 1 and Figure 2 On the basis of Example 1, a pressure relief pipe 22 communicating with the chamber is provided on the cylinder body 2, and a pressure relief valve is provided on the pressure relief pipe 22; when the hydraulic oil pressure in the chamber of the cylinder body 2 is too high, the pressure relief valve automatically opens, so that the hydraulic oil is automatically discharged through the pressure relief pipe 22, preventing the cylinder body 2 from bursting due to excessive pressure, thereby improving safety.

[0028] The cylinder body 2, piston plate 3, sliding cylinder 6, delivery pump 8, oil supply pipe 10, heat exchange pipe 13, water pump 19 and pressure relief pipe 22 of the new single-acting telescopic anti-blowout hydraulic cylinder of the utility model are all purchased on the market. Technical personnel in the industry only need to install and operate them according to the accompanying instruction manual, without the need for technical personnel in this field to make creative labor.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A novel single-acting telescopic anti-blowout hydraulic cylinder, comprising a base plate (1), a cylinder body (2), a piston plate (3) and a piston rod (4), wherein the cylinder body (2) is fixedly mounted on the upper end of the base plate (1), a chamber is arranged in the cylinder body (2), and the piston rod (4) is fixedly mounted on the upper end of the piston plate (3); characterized in that: The invention also comprises a piston ring (5), a sliding cylinder (6), an oil storage tank (7), an oil supply mechanism, an oil discharge mechanism and a heat dissipation mechanism. The sliding cylinder (6) is fixedly mounted on the upper end of the piston ring (5). The piston ring (5) is mounted in the chamber of the cylinder body (2) in a manner of sliding upward and downward. The piston ring (5) and the side wall of the chamber of the cylinder body (2) are connected in a sliding seal. A cavity is arranged in the sliding cylinder (6). The lower end of the cavity of the sliding cylinder (6) is connected to the chamber of the cylinder body (2). The piston plate (3) is mounted in the sliding cylinder (6) in a manner of sliding upward and downward. ), the piston plate (3) and the cavity are in sealed sliding connection, the upper end of the piston rod (4) is located above the sliding cylinder (6), the output end of the oil supply mechanism is connected to the lower part of the chamber of the cylinder body (2), the oil supply mechanism has an oil supply function, the input end of the discharge mechanism is connected to the lower part of the chamber of the cylinder body (2), the oil discharge mechanism has an oil discharge function, the output end of the oil discharge mechanism and the input end of the oil supply mechanism are both connected to the oil storage tank (7), and a heat dissipation mechanism is provided on the oil discharge mechanism, the heat dissipation mechanism has a heat dissipation function.

2. A novel single-acting telescopic anti-blowout hydraulic cylinder as claimed in claim 1, characterized in that: The oil supply mechanism comprises a delivery pump (8), an oil pipe A (9) and an oil supply pipe (10); the delivery pump (8) is fixedly mounted on the base plate (1); the input end of the delivery pump (8) is connected to the oil storage tank (7) through the oil pipe A (9); the output end of the delivery pump (8) is connected to the lower part of the chamber of the cylinder body (2) through the oil supply pipe (10); and a valve is arranged on the oil supply pipe (10).

3. A novel single-acting telescopic anti-blowout hydraulic cylinder as claimed in claim 1, characterized in that: The oil discharge mechanism comprises an oil discharge pipe (11), a cylinder A (12), a plurality of groups of heat exchange pipes (13) and a cylinder B (14); the input end of the oil discharge pipe (11) is connected to the lower part of the chamber of the cylinder body (2); a valve is arranged on the oil discharge pipe (11); the output end of the oil discharge pipe (11) is connected to the cylinder A (12); the left ends of the plurality of groups of heat exchange pipes (13) are connected to the cylinder A (12); the right ends of the plurality of groups of heat exchange pipes (13) are connected to the cylinder B (14); the output end of the cylinder B (14) is connected to the oil storage tank (7) through a return pipe (15); and the plurality of groups of heat exchange pipes (13) are located in the heat dissipation mechanism.

4. A novel single-acting telescopic anti-blowout hydraulic cylinder as claimed in claim 3, characterized in that: The heat dissipation mechanism comprises a cylinder (16), a liquid inlet pipe (17), a discharge pipe (18) and a water pump (19); a bracket is arranged on the cylinder (16); the cylinder (16) is fixedly mounted on the bottom plate (1) through the bracket; a water cavity is arranged in the cylinder (16); water is arranged in the water cavity; a plurality of groups of heat exchange tubes (13) are immersed in the water in the water cavity; a liquid inlet pipe (17) is arranged on the upper part of the cylinder (16); a discharge pipe (18) is arranged on the lower part of the cylinder (16); a valve is arranged on the discharge pipe (18); an output end of the discharge pipe (18) is connected to the water pump (19); a delivery pipe is arranged on the output end of the water pump (19); and a thermometer is arranged on the cylinder (16).

5. A novel single-acting telescopic anti-blowout hydraulic cylinder as claimed in claim 2, characterized in that: The oil supply pipe (10) is provided with a one-way valve.

6. A novel single-acting telescopic anti-blowout hydraulic cylinder as claimed in claim 1, characterized in that: Limiting blocks (21) are provided at the upper and lower parts of the chamber of the cylinder body (2) and the lower part of the cavity of the sliding cylinder (6).

7. A novel single-acting telescopic anti-blowout hydraulic cylinder as claimed in claim 1, characterized in that: The cylinder body (2) is provided with a pressure relief pipe (22) communicating with the chamber, and the pressure relief pipe (22) is provided with a pressure relief valve.

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