Hydraulic system of tube push bench

Abstract

The utility model relates to the technical field of pipe jacking machine hydraulic systems, in particular to a pipe jacking machine hydraulic system which comprises a base, a second oil pump is fixedly connected to the side end of an oil tank, cooling fins, a first fixing ring and a second fixing ring are fixedly connected to the circumferential face of a connecting pipe, and a cooling tank is movably connected to the outer portion of the connecting pipe. A sealing ring is installed in the sealing groove, a top cover is movably connected to the circumferential face of the connecting pipe, a water inlet pipe is fixedly connected to the top of the top cover, a water outlet pipe is fixedly connected to the bottom of the cooling tank, and the end, away from the second oil pump, of the connecting pipe is fixedly connected with the top of the oil tank. By arranging the cooling tank, the cooling fins, the water inlet pipe and the water outlet pipe, the service life of hydraulic oil is prolonged, the maintenance cost of the device is further reduced, and by arranging the first spoiler, the second spoiler and the filter frame, the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic systems for pipe jacking machines, in particular to a hydraulic system for pipe jacking machines. Background Art

[0002] With the rapid development of urban modernization, more and more underground pipelines are being laid. Pipe jacking construction has been promoted and applied in pipeline construction due to its advantages of no excavation and less impact on the surrounding environment. At present, large-scale pipe jacking equipment on the market has been widely used in bridges, tunnels, and underground construction fields due to its large tonnage carrying capacity and high-efficiency pipeline development. At the same time, its construction cost and maintenance costs are also quite expensive.

[0003] Although the current large-scale pipe jacking machine hydraulic system can meet the working conditions of high load, but when facing high power and high flow output, the system will heat up seriously, especially when the air circulation underground is slow and the heat dissipation effect is poor, which seriously affects the service life and maintenance cost of the equipment, resulting in a short hydraulic oil replacement cycle and a large amount of waste oil. Therefore, a pipe jacking machine hydraulic system is needed. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a hydraulic system for a pipe jacking machine.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydraulic system of a pipe jacking machine includes a base, the top of the base is fixedly connected to an oil tank, the side end of the oil tank is fixedly connected to a second oil pump, the output end of the second oil pump is fixedly connected to a connecting pipe, the circumferential surface of the connecting pipe is fixedly connected to a heat sink, a first fixing ring and a second fixing ring, and the heat sink is located between the first fixing ring and the second fixing ring, the outside of the connecting pipe is movably connected to a cooling tank, the inner bottom of the cooling tank is provided with a sealing groove, the inside of the sealing groove is installed with a sealing ring, and the bottom of the second fixing ring is fitted with the top of the sealing ring, the circumferential surface of the connecting pipe is movably connected to a top cover, and the top cover is threadedly connected to the inner side wall of the cooling tank, the top of the top cover is fixedly connected to a water inlet pipe, the bottom of the cooling tank is fixedly connected to a water outlet pipe, and the end of the connecting pipe away from the second oil pump is fixedly connected to the top of the oil tank.

[0006] Furthermore: a first support frame and a second support frame are fixedly connected to the top of the base, and the second support frame fits the bottom of the second oil pump.

[0007] Further: a first oil pump is fixedly connected to the top of the first support frame, an input end of the first oil pump is fixedly connected to the side end surface of the oil tank, and an output end of the first oil pump is fixedly connected to an oil outlet pipe.

[0008] Furthermore: there are multiple heat sinks, which are distributed in a ring shape on the outer surface of the connecting pipe.

[0009] Furthermore: the inner wall of the oil tank is fixedly connected with a first spoiler and a second spoiler, and the first spoiler and the second spoiler are cross-distributed.

[0010] Furthermore: the inner side wall of the oil tank is fixedly connected with a first support block and a second support block, and a filter frame is installed on the top of the first support block and the second support block.

[0011] The utility model has the following beneficial effects:

[0012] 1. Compared with the prior art, by setting a cooling tank, a heat sink, a water inlet pipe and a water outlet pipe, when in use, the second oil pump circulates the high-temperature hydraulic oil through the connecting pipe, and the water flow used for cooling enters the interior of the cooling tank from the water inlet pipe to exchange heat with the heat sink, and the water flow after heat exchange is discharged from the water outlet pipe, thereby cooling the hydraulic oil, enhancing the heat dissipation effect of the hydraulic oil, and is beneficial to extending the service life of the hydraulic oil, thereby reducing the maintenance cost of the device.

[0013] 2. Compared with the prior art, by providing a first spoiler, a second spoiler and a filter frame, when in use, the cooled hydraulic oil passes through the first spoiler and the second spoiler and falls into the filter frame, and the filter frame is used to filter the hydraulic oil, thereby filtering impurities generated during the use of the hydraulic oil, which facilitates the continuous use of the hydraulic oil and is beneficial to improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0016] Figure 3 For the utility model Figure 2 Enlarged view of point A in the middle;

[0017] Figure 4 For the utility model Figure 3 Enlarged view of point B in the middle;

[0018] Figure 5 For the utility model Figure 2 Enlarged view of point C in the middle.

[0019] Legend:

[0020] 1. Base; 2. Oil tank; 3. First support frame; 4. First oil pump; 5. Oil outlet pipe; 6. Second support frame; 7. Second oil pump; 8. Connecting pipe; 9. Heat sink; 10. First fixing ring; 11. Top cover; 12. Water inlet pipe; 13. Water outlet pipe; 14. Cooling tank; 15. Second fixing ring; 16. Sealing groove; 17. Sealing ring; 18. First spoiler; 19. Second spoiler; 20. First support block; 21. Second support block; 22. Filter frame. DETAILED DESCRIPTION

[0021] Reference Figure 1-5 The utility model provides a pipe jacking machine hydraulic system: comprises a base 1, the top of the base 1 is fixedly connected with an oil tank 2, the side end of the oil tank 2 is fixedly connected with a second oil pump 7, the output end of the second oil pump 7 is fixedly connected with a connecting pipe 8, the circumferential surface of the connecting pipe 8 is fixedly connected with a heat sink 9, a first fixing ring 10 and a second fixing ring 15, and the heat sink 9 is located between the first fixing ring 10 and the second fixing ring 15, the outside of the connecting pipe 8 is movably connected with a cooling tank 14, the inner bottom of the cooling tank 14 is provided with a sealing groove 16, the inside of the sealing groove 16 is installed with a sealing ring 17, and the bottom of the second fixing ring 15 is fitted with the top of the sealing ring 17, the circumferential surface of the connecting pipe 8 is movably connected with a top cover 11, and the top cover 11 is threadedly connected to the inner side wall of the cooling tank 14, the top of the top cover 11 is fixedly connected with a water inlet pipe 12, the bottom of the cooling tank 14 is fixedly connected with a water outlet pipe 13, and one end of the connecting pipe 8 away from the second oil pump 7 is fixedly connected to the top of the oil tank 2. When in use, the second oil pump 7 circulates the high-temperature hydraulic oil through the connecting pipe 8, and the cooling water flows into the cooling tank 14 from the water inlet pipe 12 to exchange heat with the heat sink 9, and the water after heat exchange is discharged from the water outlet pipe 13, thereby cooling the hydraulic oil and enhancing the heat dissipation effect of the hydraulic oil, which is beneficial to extending the service life of the hydraulic oil and thereby reducing the maintenance cost of the device.

[0022] The top of the base 1 is fixedly connected with a first support frame 3 and a second support frame 6, and the second support frame 6 is in contact with the bottom of the second oil pump 7. The second support frame 6 is used to support and fix the second oil pump 7.

[0023] The top of the first support frame 3 is fixedly connected with a first oil pump 4, the input end of the first oil pump 4 is fixedly connected with the side end surface of the oil tank 2, and the output end of the first oil pump 4 is fixedly connected with an oil outlet pipe 5. The first support frame 3 is used to support and fix the first oil pump 4, thereby enhancing the stability of the output of the first oil pump 4, and the first oil pump 4 is a main top pump.

[0024] There are multiple heat sinks 9, which are distributed in a ring shape on the outer surface of the connecting pipe 8. Multiple groups of heat sinks 9 are used to dissipate heat, thereby improving the heat dissipation effect.

[0025] The inner wall of the oil tank 2 is fixedly connected with a first spoiler 18 and a second spoiler 19, and the first spoiler 18 and the second spoiler 19 are cross-distributed. The inner wall of the oil tank 2 is fixedly connected with a first support block 20 and a second support block 21, and a filter frame 22 is installed on the top of the first support block 20 and the second support block 21. When in use, the cooled hydraulic oil passes through the first spoiler 18 and the second spoiler 19 and falls into the filter frame 22, and the filter frame 22 is used to filter the hydraulic oil, thereby filtering impurities generated during the use of the hydraulic oil, facilitating the continuous use of the hydraulic oil, and helping to improve the practicality of the device.

[0026] Working principle: When the hydraulic system of the pipe jacking machine is in use, the first oil pump 4 is used to provide power for the pipe jacking machine, and the second oil pump 7 is used to circulate the high-temperature hydraulic oil through the connecting pipe 8. The water used for cooling enters the interior of the cooling tank 14 from the water inlet pipe 12 to exchange heat with the heat sink 9, and the water after heat exchange is discharged from the water outlet pipe 13, thereby cooling the hydraulic oil, enhancing the heat dissipation effect of the hydraulic oil, which is beneficial to extending the service life of the hydraulic oil, and thus reducing the maintenance cost of the device.

[0027] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A hydraulic system for a pipe jacking machine, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to an oil tank (2), the side end of the oil tank (2) is fixedly connected to a second oil pump (7), the output end of the second oil pump (7) is fixedly connected to a connecting pipe (8), the circumferential surface of the connecting pipe (8) is fixedly connected to a heat sink (9), a first fixing ring (10) and a second fixing ring (15), and the heat sink (9) is located between the first fixing ring (10) and the second fixing ring (15), the outside of the connecting pipe (8) is movably connected to a cooling tank (14), and a sealing groove is provided on the inner bottom of the cooling tank (14) (16), a sealing ring (17) is installed inside the sealing groove (16), and the bottom of the second fixing ring (15) is fitted with the top of the sealing ring (17), the circumferential surface of the connecting pipe (8) is movably connected with a top cover (11), and the top cover (11) is threadedly connected to the inner wall of the cooling tank (14), the top of the top cover (11) is fixedly connected to a water inlet pipe (12), the bottom of the cooling tank (14) is fixedly connected to a water outlet pipe (13), and the end of the connecting pipe (8) away from the second oil pump (7) is fixedly connected to the top of the oil tank (2).

2. The hydraulic system of the pipe jacking machine according to claim 1, characterized in that: The top of the base (1) is fixedly connected to a first support frame (3) and a second support frame (6), and the second support frame (6) is in contact with the bottom of the second oil pump (7).

3. The hydraulic system of the pipe jacking machine according to claim 2, characterized in that: A first oil pump (4) is fixedly connected to the top of the first support frame (3), an input end of the first oil pump (4) is fixedly connected to a side end surface of the oil tank (2), and an output end of the first oil pump (4) is fixedly connected to an oil outlet pipe (5).

4. The hydraulic system of the pipe jacking machine according to claim 3, characterized in that: The heat sinks (9) are provided in a plurality and are distributed in a ring shape on the outer surface of the connecting pipe (8).

5. The hydraulic system of the pipe jacking machine according to claim 4, characterized in that: A first spoiler (18) and a second spoiler (19) are fixedly connected to the inner wall of the oil tank (2), and the first spoiler (18) and the second spoiler (19) are cross-distributed.

6. The hydraulic system of the pipe jacking machine according to claim 5, characterized in that: The inner side wall of the oil tank (2) is fixedly connected with a first support block (20) and a second support block (21), and a filter frame (22) is installed on the top of the first support block (20) and the second support block (21).

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