Novel hydraulic cylinder

Abstract

The utility model discloses a novel hydraulic cylinder which comprises a cylinder body, expansion heads and a hydraulic cylinder body. The front end cover is arranged at one end of the cylinder body; the rear end cover is arranged at one end of the cylinder body; the piston is movably arranged in the cylinder body; the output rod is arranged on the piston and partially extends out of the cylinder body; one end of the air cooling sleeve is connected with the expansion head at one end of the cylinder body, the other end of the air cooling sleeve is connected with the expansion head at the other end of the cylinder body, and a cooling space is defined by the air cooling sleeve and the cylinder body; the air inlet is formed in the air cooling sleeve and communicates with the cooling space; and the at least one air outlet is formed in the air cooling sleeve and communicates with the cooling space. Cooling air is pumped into the cooling space through the air inlet, absorbs heat of the cylinder body and is discharged from the air outlet, the effect of taking away the heat of the cylinder body is achieved, and the cylinder body is prevented from generating a large amount of temperature rise.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic cylinders, in particular to a novel hydraulic cylinder. Background Art

[0002] Hydraulic cylinders generate heat during operation, primarily from internal friction within the hydraulic oil and energy losses within the hydraulic system. Failure to cool the hydraulic cylinder can lead to excessive oil temperatures, resulting in degraded fluid performance, seal degradation, reduced system efficiency, and potential safety risks. Utility Model Content

[0003] The technical problem to be solved by the utility model is: the utility model provides a new type of hydraulic cylinder to solve the problems of oil performance degradation, seal aging, system efficiency reduction and potential safety risks in high temperature environment.

[0004] The technical solution adopted by the utility model to solve the technical problem is: a new type of hydraulic cylinder, comprising: a cylinder body, with enlarged heads provided at both ends of the cylinder body; a front end cover, the front end cover is provided at one end of the cylinder body; a rear end cover, the rear end cover is provided at one end of the cylinder body; a piston, the piston is movably provided in the cylinder body; an output rod, the output rod is provided on the piston, and partially extends out of the cylinder body; an air-cooling sleeve, one end of the air-cooling sleeve is connected to the enlarged head at one end of the cylinder body, and the other end of the air-cooling sleeve is connected to the enlarged head at the other end of the cylinder body, and the air-cooling sleeve and the cylinder body enclose a cooling space; an air inlet, the air inlet is provided on the air-cooling sleeve, and is connected to the cooling space; at least one air outlet, the air outlet is provided on the air-cooling sleeve, and is connected to the cooling space.

[0005] The beneficial effects of the present invention are as follows: the output rod is partially arranged in the cylinder body, and one end passes through the front end cover to extend out of the cylinder body, and a rear end cover is provided at the end of the cylinder body away from the front end cover, and the piston is driven to move back and forth by hydraulic oil, thereby driving the output rod to move back and forth. Enlarged heads are provided at both ends of the cylinder body, and the outer diameter of the part of the cylinder body located between the two enlarged heads is smaller than the outer diameter of the enlarged heads. The two ends of the air-cooling sleeve are respectively connected to the enlarged heads at both ends, thereby forming a cooling space between the air-cooling sleeve and the cylinder body. Cooling air is pumped into the cooling space through the air inlet, and the cooling air absorbs the heat of the cylinder body and is discharged from the air outlet, thereby taking away the heat of the cylinder body and avoiding a large temperature rise in the cylinder body. Moreover, when the cooling space is filled with cooling air, an excellent heat-insulating layer can be formed to prevent the heat from the external environment from being transferred to the cylinder body. In particular, the cooling air in the cooling space is still flowing, and its thermal insulation performance is even better.

[0006] Preferably, it also includes:

[0007] A barrier member is spirally wound around the outer circumference of the cylinder body, and the barrier member, the cylinder body and the air-cooling sleeve form a spiral flow channel;

[0008] The air inlet is connected to the spiral flow channel, two air outlets are provided and connected to the spiral flow channel, and the air inlet is located between the two air outlets.

[0009] Preferably, it also includes:

[0010] The grooves are arranged at intervals on the side of the barrier member facing the air-cooling sleeve.

[0011] Preferably, it also includes:

[0012] The turbulent flow parts are arranged at intervals on the air cooling sleeve and are arranged in the spiral flow channel.

[0013] Preferably, it also includes:

[0014] A first oil port, the first oil port is provided on the rear end cover and is connected to the cylinder body;

[0015] The second oil port is arranged on the front end cover and is connected to the cylinder body.

[0016] Preferably, a guide belt, a sealing ring and a dust ring are sequentially arranged between the cylinder body and the output rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional structural diagram of a new type of hydraulic cylinder;

[0018] Figure 2 It is a cross-sectional view of a new type of hydraulic cylinder;

[0019] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0020] Figure 4 for Figure 2 A partial enlarged view of point B in the middle;

[0021] Figure 5 Another cross-sectional view of a new hydraulic cylinder;

[0022] Figure 6 for Figure 5 A partial enlarged view of point C in the middle.

[0023] In the figure: mounting support 1, rear end cover 2, air cooling sleeve 3, output rod 4, second oil port 5, air outlet 6, air inlet 7, fastener 8, first oil port 9, cylinder body 10, spiral flow channel 11, piston 12, dust ring 13, sealing ring 14, guide belt 15, barrier 16, groove 161, turbulence member 17, rubber member 18. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific implementation methods.

[0025] In this article, terms such as "upper, lower, inside, outside" are established based on the positional relationships shown in the drawings. Depending on the different drawings, the corresponding positional relationships may also change accordingly. Therefore, they cannot be understood as absolute limitations on the scope of protection; moreover, relational terms such as "first" and "second" are only used to distinguish one component from another with the same name, and do not necessarily require or imply any actual relationship or order between these components.

[0026] Example

[0027] like Figure 1-6 As shown, a new type of hydraulic cylinder includes: a cylinder body 10, with enlarged heads provided at both ends of the cylinder body 10; a front end cover, which is provided at one end of the cylinder body 10; a rear end cover 2, which is provided at one end of the cylinder body 10; a piston 12, which is movably provided in the cylinder body 10; an output rod 4, which is provided on the piston 12 and partially extends out of the cylinder body 10 air-cooling sleeve 3, one end of the air-cooling sleeve 3 is connected to the enlarged head at one end of the cylinder body 10, and the other end of the air-cooling sleeve 3 is connected to the enlarged head at the other end of the cylinder body 10, and the air-cooling sleeve 3 and the cylinder body 10 enclose a cooling space; an air inlet 7, which is provided on the air-cooling sleeve 3 and is connected to the cooling space; and at least one air outlet 6, which is provided on the air-cooling sleeve 3 and is connected to the cooling space.

[0028] Specifically, the output rod 4 is partially disposed within the cylinder body 10, with one end extending through the front end cap. A rear end cap 2 is located at the end of the cylinder body 10 away from the front end cap. Hydraulic oil drives the piston 12 back and forth, thereby driving the output rod 4 back and forth. Enlarged heads are provided at each end of the cylinder body 10. The outer diameter of the portion of the cylinder body 10 between the two enlarged heads is smaller than that of the enlarged heads. The air-cooling sleeve 3 is connected to the enlarged heads at both ends, forming a cooling space between the air-cooling sleeve 3 and the cylinder body 10. Cooling air is pumped into the cooling space through the air inlet 7. The cooling air absorbs heat from the cylinder body 10 and is discharged through the air outlet 6, effectively removing heat from the cylinder body 10 and preventing a significant temperature rise. When the cooling space is filled with cooling air, it forms an excellent thermal insulation layer, preventing heat from the external environment from being transferred to the cylinder body 10. This is especially true since the cooling air in the cooling space is still flowing, further enhancing its thermal insulation performance. Preferably, the rear end cap 2 is connected to the mounting bracket 1. The air cooling sleeve 3 is connected to the cylinder body 10 via fasteners 8 .

[0029] The applicant needs to emphasize that the air cooling structure supporting the air-cooling sleeve 3, that is, the structure forming the cooling air circuit, is considered to be a mature prior art, which at least includes a cooling air source, an exhaust gas source and a power source, and its specific structure will not be elaborated on in detail here.

[0030] Furthermore, it also includes: a barrier 16, the barrier 16 is spirally wound around the outer circumference of the cylinder body 10, and the barrier 16, the cylinder body 10 and the air-cooling sleeve 3 enclose a spiral flow channel 11; wherein, the air inlet 7 is connected to the spiral flow channel 11, and the air outlet 6 is provided with two, and connected to the spiral flow channel 11, and the air inlet 7 is located between the two air outlets 6. During the air cooling process, the air flow in some areas is not very smooth, which leads to excessively high temperatures in some areas. The cooling space is divided into spiral flow channels 11 by blocking, and the areas where the air flow is not smooth are minimized, making it easier for the gas to be discharged from the cooling space. And because the spiral flow channel 11 increases the flow length of the gas, the air inlet 7 is connected to the middle of the spiral flow channel 11, and the air outlet 6 is connected to both ends of the spiral flow channel 11, so that the flow length of the gas is halved, thereby avoiding excessive temperature rise of the gas and reducing the cooling efficiency. Furthermore, the barrier 16 is integrally connected to the cylinder 10, effectively absorbing heat from the cylinder 10 and transferring it to the cooling air. The barrier 16 indirectly increases the contact area between the cylinder 10 and the cooling air. More preferably, the cooling air flow rate can be increased based on the temperature of the cylinder 10. Specifically, the higher the temperature of the cylinder 10, the faster the cooling air flow rate. Preferably, a rubber member 18 is provided between the barrier 16 and the air-cooling sleeve 3 for sealing.

[0031] Furthermore, the barrier 16 further includes grooves 161, which are spaced apart on the side of the barrier 16 facing the air-cooling sleeve 3. The grooves 161 can effectively increase the specific surface area of ​​the barrier 16, allowing the cooling air to better exchange heat with the barrier 16, thereby improving the cooling efficiency.

[0032] Furthermore, the system further includes turbulence elements 17, which are spaced apart from the air-cooling sleeve 3 and disposed within the spiral flow channel 11. These elements are used to create fluctuations in the cooling air flowing through the spiral flow channel 11, preventing laminar flow that would otherwise cause excessively high temperatures in the cooling air near the cylinder 10 while maintaining minimal temperature changes farther from the cylinder 10. The height of the turbulence elements 17 is perpendicular to the direction of cooling air flow.

[0033] Furthermore, it also includes: a first oil port 9, which is provided on the rear end cover 2 and is connected to the cylinder body 10;

[0034] The second oil port 5 is provided on the front cover and is connected to the cylinder body 10. The purpose of driving the piston 12 to move in the cylinder body 10 is achieved through the oil in and out of the first oil port 9 and the second oil port 5.

[0035] Furthermore, a guide belt 15, a sealing ring 14, and a dust ring 13 are sequentially provided between the cylinder body 10 and the output rod 4. The guide belt 15 is used to guide the output rod 4, and the sealing ring 14 is used for sealing. The sealing ring 14 is preferably one or a combination of a YX-d ring and a BSJ step seal. The dust ring 13 is used to prevent dust, and the dust ring 13 is preferably a J-type dust ring 13. The dust ring 13 is located on the side away from the inside of the cylinder body 10, the guide belt 15 is located on the side close to the inside of the cylinder body 10, and the sealing ring 14 is located between the dust ring 13 and the guide belt 15. The above-mentioned technical features can be arbitrarily combined. In order to make the description concise, not all possible combinations of the various technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

Claims

1. A new hydraulic cylinder, characterized in that: include: A cylinder body (10), wherein both ends of the cylinder body (10) are provided with enlarged heads; A front end cover, the front end cover being arranged at one end of the cylinder body (10); A rear end cover (2), the rear end cover (2) being arranged at one end of the cylinder body (10); a piston (12), the piston (12) being movably disposed in the cylinder (10); an output rod (4), the output rod (4) being arranged on the piston (12) and partially extending out of the cylinder (10); An air-cooling sleeve (3), one end of the air-cooling sleeve (3) being connected to an enlarged head at one end of the cylinder body (10), and the other end of the air-cooling sleeve (3) being connected to an enlarged head at the other end of the cylinder body (10), the air-cooling sleeve (3) and the cylinder body (10) enclosing each other to form a cooling space; An air inlet (7), the air inlet (7) being provided on the air-cooling sleeve (3) and communicating with the cooling space; At least one air outlet (6), the air outlet (6) being arranged on the air-cooling sleeve (3) and communicating with the cooling space.

2. A new hydraulic cylinder according to claim 1, characterized in that: Also includes: a barrier (16), the barrier (16) being spirally wound around the outer peripheral surface of the cylinder (10), the barrier (16), the cylinder (10) and the air-cooling sleeve (3) enclosing to form a spiral flow channel (11); The air inlet (7) is connected to the spiral flow channel (11), two air outlets (6) are provided and are connected to the spiral flow channel (11), and the air inlet (7) is located between the two air outlets (6).

3. A new hydraulic cylinder according to claim 2, characterized in that: Also includes: Grooves (161), the grooves (161) are spaced apart and arranged on the side of the barrier (16) facing the air-cooling sleeve (3).

4. A new hydraulic cylinder according to claim 2, characterized in that: Also includes: A turbulent flow member (17), wherein the turbulent flow member (17) is arranged at intervals on the air-cooling sleeve (3), and the turbulent flow member (17) is arranged in the spiral flow channel (11).

5. A novel hydraulic cylinder according to claim 1, characterized in that: Also includes: a first oil port (9), the first oil port (9) being provided on the rear end cover (2) and communicating with the cylinder body (10); A second oil port (5) is provided on the front end cover and is connected to the cylinder body (10).

6. A novel hydraulic cylinder according to claim 1, characterized in that: A guide belt (15), a sealing ring (14), and a dust ring (13) are sequentially arranged between the cylinder body (10) and the output rod (4).

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