Boosting cylinder with heat dissipation structure

Abstract

The utility model relates to the technical field of booster cylinders, in particular to a booster cylinder with a heat dissipation structure, which comprises a cylinder body and a sliding rod arranged in the cylinder body in a sliding mode, and a first oil inlet and a second oil inlet which are communicated with an oil pipe are arranged on the outer side of the cylinder body. Continuous cooling fins are arranged on the outer side of the cylinder body, a heat conduction groove is formed in the outer side of the cylinder body, and the cooling fins are arranged in the heat conduction groove. And heat-conducting oil flowing circularly is arranged in the heat-conducting groove. The heat conduction grooves are used for containing the heat conduction oil, the cooling fins are connected with the cylinder body, the cooling fins can conduct heat of the cylinder body into the heat conduction oil, and the heat conduction grooves can conduct the heat of the cylinder body into the heat conduction oil and air. And through circulation of the heat conduction oil, the heat dissipation efficiency of the cylinder body can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power cylinders, and particularly relates to a power cylinder with a heat dissipation structure. Background Technique

[0002] At present, for commercial vehicle double-steering front axle models, the steering assistance type of the second axle mostly adopts a steering assistance cylinder structure. The steering assistance cylinder is a two-way acting oil cylinder, and the piston reciprocates in the oil cylinder. The movement of the piston will inevitably generate a large amount of heat, resulting in a continuous increase in the oil temperature of the entire steering system.

[0003] The invention patent with the publication number of CN107830081B discloses a hydraulic power cylinder, which includes a cylinder body with an inlet and an outlet, a piston arranged in the cylinder body, and a rod-shaped pushing member. The inlet and the outlet can be connected through a liquid passing channel opened on the piston. The piston also has a columnar liquid passing cavity. The liquid passing channel includes an inlet channel opened on the side wall of the liquid passing cavity and capable of connecting the liquid passing cavity with the inlet. The inner end of the pushing member has a liquid passing part extending into the liquid passing cavity. The liquid passing part can translate axially in the liquid passing cavity. When the liquid passing part is in different positions, the side part of the liquid passing part can partially block the inlet channel to different degrees or not block the inlet channel.

[0004] Existing power cylinders often do not have a heat dissipation structure, and there is an urgent need to provide a power cylinder that is convenient for heat dissipation. Summary of the Utility Model

[0005] Based on the above description, the utility model provides a power cylinder with a heat dissipation structure to improve the heat dissipation efficiency of the existing power cylinder.

[0006] The technical solution for the utility model to solve the above technical problems is as follows: A power cylinder with a heat dissipation structure includes a cylinder body and a sliding rod slidably arranged in the cylinder body. A first oil inlet and a second oil inlet communicating with an oil pipe are arranged on the outer side of the cylinder body;

[0007] Continuous heat dissipation fins are arranged on the outer side of the cylinder body. A heat conduction groove is arranged on the outer side of the cylinder body, and the heat dissipation fins are arranged in the heat conduction groove;

[0008] Heat conduction oil flowing in a cycle is arranged in the heat conduction groove.

[0009] Through the above technical solution, both the heat dissipation fins and the heat conduction groove can absorb the heat generated by the cylinder body. The heat conduction oil in the heat conduction groove circulates, and can quickly take away the heat on the heat dissipation fins and the heat conduction groove, thereby achieving a good heat dissipation and cooling effect.

[0010] On the basis of the above technical solution, the utility model can be further improved as follows.

[0011] Further, the heat dissipation fins are spiral.

[0012] Through the above technical solution, the spiral heat sink makes the whole heat sink a continuous structure, so that the heat conduction grooves are in a continuous structure, facilitating the flow of heat-conducting oil in the heat conduction grooves, and thus being able to better take away the heat on the cylinder block.

[0013] Further, a partition plate is arranged in the heat conduction groove, and the partition plate divides the heat conduction groove into a heat absorption cavity close to the cylinder block and a heat dissipation cavity far from the cylinder block;

[0014] The heat absorption cavity is communicated with an oil inlet pipe, the heat dissipation cavity is communicated with an oil outlet pipe, and the oil inlet pipe and the oil outlet pipe are arranged at the same end of the heat conduction groove;

[0015] One end of the partition plate close to the oil inlet pipe is arranged in close contact with the inner wall of the heat conduction groove, and a communication hole is arranged between the other end of the partition plate far from the oil inlet pipe and the inner wall of the heat conduction groove, and the communication hole communicates the heat absorption cavity and the heat dissipation cavity;

[0016] A condenser and an oil pump are communicated between the oil inlet pipe and the oil outlet pipe.

[0017] Through the above technical solution, the partition plate is used to divide the heat conduction groove. The heat absorption cavity is close to the cylinder block and can absorb the heat on the surfaces of the heat sink, the heat conduction groove and the cylinder block; the oil inlet pipe is used to input heat-conducting oil into the heat absorption cavity, the oil outlet pipe is used to output the heat-conducting oil in the heat dissipation cavity; the condenser is used to cool the heat-conducting oil, and the oil pump is used to pump and discharge the heat-conducting oil, so that the heat-conducting oil circulates in the heat conduction groove.

[0018] Further, the cross section of the heat sink is wavy.

[0019] Through the above technical solution, the wavy heat sink can increase the contact area between the heat sink and the heat-conducting oil, thereby improving the heat conduction efficiency.

[0020] Further, the heat sink includes an annular portion arranged outside the cylinder block and a plurality of straight plate portions, and the plurality of straight plate portions are arranged along the axial direction of the cylinder block, and the straight plate portions are all connected to the annular portion.

[0021] Through the above technical solution, the annular portion is used to connect the plurality of straight plate portions together, so that the straight plate portions and the annular portion form a whole.

[0022] Further, a heat conduction groove is arranged outside the cylinder block, and the heat conduction groove is arranged in imitation of the heat sink and covers the outside of the heat sink;

[0023] A partition plate is arranged in the heat conduction groove, and the partition plate divides the heat conduction groove into a heat absorption cavity close to the cylinder block and a heat dissipation cavity far from the cylinder block;

[0024] A communication hole is provided between one end of the partition plate away from the annular portion and the inner wall of the heat conduction groove, and the communication hole communicates the heat absorption cavity and the heat dissipation cavity;

[0025] An oil inlet pipe communicating with the heat absorption cavity and an oil outlet pipe communicating with the heat dissipation cavity are provided on the annular portion, and the oil inlet pipe and the oil outlet pipe are communicated with a condenser and an oil pump.

[0026] Through the above technical solution, an air duct for air flow to pass through is formed between the straight sections of the heat conduction groove, and the cooperation of the heat conduction oil and the air duct can better improve the heat dissipation efficiency.

[0027] Compared with the prior art, the technical solution of the present application has the following beneficial technical effects:

[0028] 1. The heat conduction groove is used to accommodate the heat conduction oil, the heat dissipation fin is connected to the cylinder block, and the heat dissipation fin can conduct the heat of the cylinder block into the heat conduction oil. The heat conduction groove itself can also conduct the heat of the cylinder block into the heat conduction oil and the air; through the circulation of the heat conduction oil, the efficiency of heat dissipation of the cylinder block can be improved;

[0029] 2. The partition plate divides the heat conduction groove into a heat absorption cavity close to the cylinder block and a heat dissipation cavity far from the cylinder block. The heat absorption cavity close to the cylinder block can better absorb the heat generated by the cylinder block. The oil inlet pipe and the oil outlet pipe are used to make the heat conduction oil circulate in the heat absorption cavity and the heat dissipation cavity, and the heat conduction oil in the heat absorption cavity is transported to the heat dissipation cavity, so that the heat conduction oil in the heat absorption cavity can continuously and stably absorb the heat in the cylinder block. Description of the Drawings

[0030] Figure 1 It is a schematic diagram of the overall structure of a booster cylinder with a heat dissipation structure provided in Embodiment 1 of the present invention;

[0031] Figure 2 It is a schematic diagram of the positional relationship between the cylinder block and the heat conduction groove of a booster cylinder with a heat dissipation structure in Embodiment 1 of the present invention;

[0032] Figure 3 It is Figure 2 an enlarged schematic diagram of part A;

[0033] Figure 4 It is a schematic diagram of the structure of the partition plate and the heat conduction groove in Embodiment 1 of the present invention;

[0034] Figure 5 It is Figure 4 an enlarged schematic diagram of part B;

[0035] Figure 6 It is a schematic diagram of the overall structure of a booster cylinder with a heat dissipation structure provided in Embodiment 2 of the present invention;

[0036] Figure 7Schematic diagram of the disassembled state of the partition plate, heat conduction groove and cylinder block of a booster cylinder with a heat dissipation structure according to Embodiment 2 of the present utility model;

[0037] Figure 8 Schematic diagram of the positional relationship between the partition plate and the heat conduction groove of a booster cylinder with a heat dissipation structure according to Embodiment 2 of the present utility model;

[0038] Figure 9 For Figure 6 Enlarged schematic diagram of part C.

[0039] Reference signs: 1, cylinder block; 2, sliding rod; 3, first oil inlet; 4, second oil inlet; 5, heat sink; 6, heat conduction groove; 7, partition plate; 8, heat absorption cavity; 9, heat dissipation cavity; 10, oil inlet pipe; 11, oil outlet pipe; 12, communication hole; 13, annular part; 14, straight piece part. Detailed implementation manners

[0040] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs. The terms used in the description of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0042] Embodiment 1:

[0043] Refer to Figure 1 、 Figure 2 and Figure 3 A booster cylinder with a heat dissipation structure includes a cylinder block 1 and a sliding rod 2 slidably arranged in the cylinder block 1. A first oil inlet 3 and a second oil inlet 4 communicating with an oil pipe are arranged on the outer side of the cylinder block 1; a continuous and integrally arranged heat sink 5 is arranged on the outer side of the cylinder block 1, and the heat sink 5 is welded on the outer side of the cylinder block 1, and the heat sink 5 is spiral; a heat conduction groove 6 is arranged on the outer side of the cylinder block 1, and the heat sink 5 is arranged in the heat conduction groove 6; the heat conduction groove 6 is arranged in imitation of the heat sink 5, and both the heat sink 5 and the heat conduction groove 6 are made of copper-aluminum alloy, and both the heat sink 5 and the heat conduction groove 6 are welded on the outer side of the cylinder block 1; the cross section of the heat sink 5 is wavy, and the wavy heat sink 5 can increase the contact surface between the heat sink 5 and the heat conduction oil, and further improve the heat dissipation efficiency;

[0044] Refer to Figure 3 、 Figure 4 and Figure 5, a heat-conducting oil that circulates is provided in the heat-conducting groove 6, a partition plate 7 is provided in the heat-conducting groove 6, and the partition plate 7 divides the heat-conducting groove 6 into a heat absorption cavity 8 close to the cylinder block 1 and a heat dissipation cavity 9 far from the cylinder block 1; an oil inlet pipe 10 and an oil outlet pipe 11 are provided at one end of the heat-conducting groove 6, the oil inlet pipe 10 is communicated with the heat absorption cavity 8, and the oil outlet pipe 11 is communicated with the heat dissipation cavity 9; one end of the partition plate 7 close to the oil inlet pipe 10 is attached to the inner wall of the heat-conducting groove 6, and a communication hole 12 is provided between one end of the partition plate 7 far from the oil inlet pipe 10 and the inner wall of the heat-conducting groove 6, and the communication hole 12 enables the heat absorption cavity 8 and the heat dissipation cavity 9 to communicate with each other.

[0045] Reference Figure 3 , a condenser and an oil pump are communicated between the oil inlet pipe 10 and the oil outlet pipe 11 through a pipeline. The oil pump is used to drive the circulation of the heat-conducting oil, and the condenser is used to accelerate the heat dissipation of the heat-conducting oil, further improving the heat dissipation efficiency.

[0046] Embodiment 2:

[0047] Reference Figure 6 、 Figure 7 and Figure 8 , a booster cylinder with a heat dissipation structure, which is different from Embodiment 1 in that the heat dissipation fins 5 include an annular portion 13 provided on the outer side of the cylinder block 1 and a plurality of straight fin portions 14. The annular portion 13 is wound around the outer side of the cylinder block 1, and the annular portion 13 is welded to the cylinder block 1; the plurality of straight fin portions 14 are arranged along the axial direction of the cylinder block 1, and the plurality of straight fin portions 14 are integrally formed and connected to the annular portion 13, and the straight fin portions 14 are welded to the outer side of the cylinder block 1.

[0048] Reference Figure 6 、 Figure 7 、 Figure 8 and Figure 9 , a heat-conducting groove 6 is provided on the outer side of the cylinder block 1. The heat-conducting groove 6 is arranged in imitation of the heat dissipation fins 5, the heat-conducting groove 6 covers the outer side of the heat dissipation fins 5, a partition plate 7 is provided in the heat-conducting groove 6, and the partition plate 7 divides the heat-conducting groove 6 into a heat absorption cavity 8 and a heat dissipation cavity 9. The heat absorption cavity 8 is arranged close to the cylinder block 1, and the heat dissipation cavity 9 is arranged far from the cylinder block 1; a communication hole 12 (not shown in the figure) is provided between one end of the partition plate 7 far from the annular portion 13 and the inner wall of the heat-conducting groove 6, and the communication hole 12 enables the heat absorption cavity 8 and the heat dissipation cavity 9 to communicate with each other; an oil inlet pipe 10 communicated with the heat absorption cavity 8 and an oil outlet pipe 11 communicated with the heat dissipation cavity 9 are provided on the annular portion 13, and the oil inlet pipe 10 and the oil outlet pipe 11 are communicated with a condenser and an oil pump; an air duct for air flow to pass through is formed between the straight sections of the heat-conducting groove 6, and the heat dissipation efficiency can be better improved through the cooperation of the heat-conducting oil and the air duct.

[0049] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power cylinder with a heat dissipation structure, comprising a cylinder block (1) and a sliding rod (2) slidably arranged in the cylinder block (1). A first oil inlet (3) and a second oil inlet (4) communicating with an oil pipe are arranged outside the cylinder block (1). It is characterized in that Continuous heat dissipation fins (5) are arranged outside the cylinder block (1). A heat conduction groove (6) is arranged on the outer side of the cylinder block (1), and the heat dissipation fins (5) are arranged in the heat conduction groove (6). Heat conduction oil flowing in a cycle is arranged in the heat conduction groove (6).

2. The power cylinder with a heat dissipation structure according to claim 1, wherein, The heat dissipation fins (5) are spiral-shaped.

3. The boost cylinder with a heat dissipation structure according to claim 1, characterized in that, A partition plate (7) is arranged in the heat conduction groove (6). The partition plate (7) divides the heat conduction groove (6) into a heat absorption cavity (8) close to the cylinder block (1) and a heat dissipation cavity (9) far from the cylinder block (1). An oil inlet pipe (10) is communicated with the heat absorption cavity (8), and an oil outlet pipe (11) is communicated with the heat dissipation cavity (9). The oil inlet pipe (10) and the oil outlet pipe (11) are arranged at the same end of the heat conduction groove (6). One end of the partition plate (7) close to the oil inlet pipe (10) is attached to the inner wall of the heat conduction groove (6). A communication hole (12) is arranged between the other end of the partition plate (7) far from the oil inlet pipe (10) and the inner wall of the heat conduction groove (6). The communication hole (12) communicates the heat absorption cavity (8) and the heat dissipation cavity (9). A condenser and an oil pump are communicated between the oil inlet pipe (10) and the oil outlet pipe (11).

4. The power cylinder with a heat dissipation structure according to claim 2, characterized in that, The cross section of the heat dissipation fins (5) is wavy.

5. The power cylinder with a heat dissipation structure according to claim 1, characterized in that, The heat dissipation fins (5) include an annular part (13) arranged outside the cylinder block (1) and a plurality of straight fin parts (14). The plurality of straight fin parts (14) are arranged along the axial direction of the cylinder block (1), and the straight fin parts (14) are all connected to the annular part (13).

6. The power cylinder with a heat dissipation structure according to claim 5, wherein, A heat conduction groove (6) is arranged on the outer side of the cylinder block (1). The heat conduction groove (6) is arranged in imitation of the heat dissipation fins (5), and the heat conduction groove (6) covers the outside of the heat dissipation fins (5). A partition plate (7) is arranged in the heat conduction groove (6). The partition plate (7) divides the heat conduction groove (6) into a heat absorption cavity (8) close to the cylinder block (1) and a heat dissipation cavity (9) far from the cylinder block (1). A communication hole (12) is arranged between the end of the partition plate (7) far from the annular part (13) and the inner wall of the heat conduction groove (6). The communication hole (12) communicates the heat absorption cavity (8) and the heat dissipation cavity (9). An oil inlet pipe (10) communicating with the heat absorption cavity (8) and an oil outlet pipe (11) communicating with the heat dissipation cavity (9) are arranged on the annular part (13). A condenser and an oil pump are communicated between the oil inlet pipe (10) and the oil outlet pipe (11).

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