Hydraulic oil cylinder with cooling function

Abstract

The invention relates to the technical field of oil cylinders, in particular to a hydraulic oil cylinder with a cooling function, which comprises an oil cylinder body, a first oil port, a second oil port, an elastic telescopic piece, two transmission components and a large piston, the oil cylinder body is provided with a first piston cavity, a second piston cavity and an annular runner; the first piston cavity is filled with cyclopentane coolant, when the oil cylinder stretches out, oil enters the first oil port, and high-pressure oil pushes the elastic telescopic part to compress cyclopentane; when the oil cylinder shrinks, the elastic telescopic piece recovers to the original shape to stretch out and suck cyclopentane, the cyclopentane becomes liquid after being compressed for multiple times, the liquid flows around the oil cylinder body through the annular flow channel, the liquid cyclopentane absorbs heat to become gaseous and is compressed again to become liquid, the cooling effect is achieved repeatedly for multiple times, and therefore the oil cylinder can be cooled, and the oil cylinder can be cooled. The service life and the sealing effect of a sealing piece of the oil cylinder are prevented from being affected by too high oil temperature, and normal work of a hydraulic system is prevented from being affected.

Description

Technical Field

[0001] The invention relates to the technical field of oil cylinders, and in particular to a hydraulic oil cylinder with a self-cooling function. Background Art

[0002] The fast cylinder is a hydraulic transmission device. It is a hydraulic component that can generate different forces and forms of motion as the driving source changes. The fast cylinder is a hydraulic cylinder used in a fast working state. It can quickly achieve operations such as acceleration, deceleration and stopping. It is suitable for occasions that require fast response and high dynamic performance.

[0003] The existing fast cylinders have a fast extension and retraction speed, and the space for installing the hydraulic system is limited. It is impossible to add air cooling or water cooling devices, which will cause the oil temperature to rise or even become high. This will affect the service life and sealing effect of the cylinder seals, and the normal operation of the hydraulic system will also be affected. Summary of the invention

[0004] The purpose of the present invention is to provide a hydraulic cylinder with a self-cooling function, which can cool the cylinder to avoid affecting the service life and sealing effect of the cylinder seal due to excessive oil temperature, and prevent affecting the normal operation of the hydraulic system.

[0005] To achieve the above object, the present invention provides a hydraulic cylinder with a self-cooling function, comprising a cylinder body, a first oil port, a second oil port, an elastic telescopic member, two transmission components and a large piston;

[0006] The cylinder body has a first piston chamber, a second piston chamber and an annular flow channel, the first piston chamber is located inside the cylinder body; the second piston chamber is connected to the first piston chamber and is located inside the cylinder body; the annular flow channels are respectively located on the sides of the cylinder body; the first oil port is fixedly connected to the cylinder body, connected to the second piston chamber, and is located outside the cylinder body; the second oil port is fixedly connected to the cylinder body, connected to the second piston chamber, and is located outside the cylinder body; the elastic telescopic part is arranged in the first piston chamber; the two transmission components are respectively connected to the first piston chamber, and are respectively connected to the annular flow channel, and are located inside the cylinder body; the large piston is slidably connected to the cylinder body and is located in the second piston chamber.

[0007] Among them, the elastic telescopic part includes a spring and a small piston; the spring is fixedly connected to the cylinder body and is located in the first piston cavity; the small piston is fixedly connected to the spring, and is slidably connected to the cylinder body and is located in the first piston cavity.

[0008] Wherein, the transmission component includes a connecting pipe and a one-way valve; the connecting pipe is connected to the first piston chamber and the annular flow channel, and is located inside the cylinder body; the one-way valve is fixedly connected to the connecting pipe and is located on the side of the connecting pipe.

[0009] Wherein, the transmission component also includes an electromagnetic stop valve; the electromagnetic stop valve is fixedly connected to the connecting pipe and is located on the side of the connecting pipe.

[0010] The present invention provides a hydraulic oil cylinder with a self-cooling function, wherein the annular flow channel surrounds the oil cylinder body, and a plurality of the annular flow channels are arranged on the side of the oil cylinder body, and each of the annular flow channels is connected to the two transmission components; the first piston chamber is filled with a certain amount of cyclopentane coolant, and when the oil cylinder extends, the first oil port enters oil, and the high-pressure oil not only pushes the large piston in the oil cylinder body to move outward, but also pushes the elastic telescopic part of the first piston chamber to move synchronously, at which time, the elastic telescopic part will compress the cyclopentane, and at this time, the elastic telescopic part will also shrink. When the oil cylinder shrinks, the second oil port enters oil, and the first oil port returns oil, and the elastic telescopic part restores its original state under the action of elastic force and extends, sucking in cyclopentane. After multiple compressions, the cyclopentane becomes liquid, and the liquid flows around the oil cylinder body through the annular flow channel, and the liquid cyclopentane absorbs heat and becomes gaseous, and is compressed again to become liquid, and the cooling effect is achieved repeatedly. By adopting the above method, the oil cylinder can be cooled to avoid affecting the service life and sealing effect of the oil cylinder seal due to excessive oil temperature, thereby preventing the normal operation of the hydraulic system from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0013] 101-cylinder body, 102-first oil port, 103-second oil port, 104-elastic telescopic member, 105-transmission member, 106-large piston, 107-first piston chamber, 108-second piston chamber, 109-annular flow channel, 110-spring, 111-small piston, 112-connecting pipe, 113-one-way valve, 114-electromagnetic stop valve. DETAILED DESCRIPTION

[0014] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0015] See also Figure 1 ,in, Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] The present invention provides a hydraulic cylinder with a self-cooling function, comprising a cylinder body 101, a first oil port 102, a second oil port 103, an elastic telescopic member 104, two transmission components 105 and a large piston 106; the elastic telescopic member 104 comprises a spring 110 and a small piston 111; the transmission component 105 comprises a connecting pipe 112, a one-way valve 113 and an electromagnetic stop valve 114; the cylinder can be cooled by the above scheme to avoid affecting the service life and sealing effect of the cylinder seal due to excessively high oil temperature, thereby preventing affecting the normal operation of the hydraulic system.

[0017] According to the present specific embodiment, the cylinder body 101 has a first piston chamber 107, a second piston chamber 108 and an annular flow channel 109, wherein the first piston chamber 107 is located inside the cylinder body 101; the second piston chamber 108 is connected to the first piston chamber 107 and is located inside the cylinder body 101; the annular flow channel 109 is respectively located on the side of the cylinder body 101; the first oil port 102 is fixedly connected to the cylinder body 101, and is connected to the second piston chamber 108 and is located inside the cylinder body 101. The outer side of the cylinder body 101; the second oil port 103 is fixedly connected to the cylinder body 101, and is communicated with the second piston chamber 108, and is located on the outer side of the cylinder body 101; the elastic telescopic member 104 is arranged in the first piston chamber 107; the two transmission components 105 are respectively communicated with the first piston chamber 107, and are respectively communicated with the annular flow channel 109, and are located inside the cylinder body 101; the large piston 106 is slidably connected to the cylinder body 101, and is located in the second piston chamber 108. The annular flow channel 109 is wound around the cylinder body 101, and multiple annular flow channels 109 are arranged on the side of the cylinder body 101, and each of the annular flow channels 109 is connected to the two transmission components 105; the first piston chamber 107 is filled with a certain amount of cyclopentane coolant, and when the cylinder is extended, the first oil port 102 enters oil, and the high-pressure oil not only pushes the large piston 106 in the cylinder body 101 to move outward, but also pushes the elastic telescopic part 104 of the first piston chamber 107 to move synchronously. At this time, the elastic telescopic part 104 will compress the cyclopentane, and the elastic telescopic part 104 will also shrink. When the oil cylinder contracts, the second oil port 103 enters oil, the first oil port 102 returns oil, and the elastic expansion member 104 recovers to its original state and extends under the action of elastic force, sucking in cyclopentane. After multiple compressions, the cyclopentane becomes liquid, and the liquid flows through the annular flow channel 109 around the cylinder body 101, while the liquid cyclopentane absorbs heat and becomes gaseous, and is compressed again to become liquid, and the cooling effect is achieved repeatedly. In the above manner, the oil cylinder can be cooled to avoid affecting the service life and sealing effect of the oil cylinder seal due to excessive oil temperature, and to prevent affecting the normal operation of the hydraulic system.

[0018] The spring 110 is fixedly connected to the oil cylinder body 101 and is located in the first piston cavity 107; the small piston 111 is fixedly connected to the spring 110 and is slidably connected to the oil cylinder body 101 and is located in the first piston cavity 107. The piston can move in the first piston cavity 107, and the elastic potential energy of the spring 110 can push the small piston 111 to reset after moving.

[0019] Secondly, the connecting pipe 112 is connected to the first piston chamber 107 and the annular flow channel 109, and is located inside the cylinder body 101; the one-way valve 113 is fixedly connected to the connecting pipe 112 and is located on the side of the connecting pipe 112. The connecting pipe 112 is used to transport cyclopentane to the annular flow channel 109, and the two one-way valves 113 have the same direction, so that one of the connecting pipes 112 is used as the cyclopentane inlet and the other connecting pipe 112 is used as the cyclopentane outlet.

[0020] At the same time, the electromagnetic stop valve 114 is fixedly connected to the connecting pipe 112 and is located at the side of the connecting pipe 112. A temperature relay is installed in the system, and the temperature relay timely controls the electromagnetic stop valve 114 to adjust the pressure flow of cyclopentane, thereby cooling the cylinder body 101 and the oil, and the temperature of the entire system is controlled.

[0021] When the present invention is used, a fixed amount of cyclopentane coolant is filled in the first piston chamber 107, and the two one-way valves 113 are in the same direction, so that one of the connecting pipes 112 is used as the cyclopentane inlet and the other connecting pipe 112 is used as the cyclopentane outlet. A plurality of annular flow channels 109 are arranged on the side of the cylinder body 101, and each annular flow channel 109 is connected to the two connecting pipes 112. When the cylinder is extended, the first oil port 102 enters oil, and the high-pressure oil pushes the large piston 106 moves outward, and also pushes the small piston 111 to move synchronously. At this time, the small piston 111 will compress cyclopentane, and cyclopentane will flow into the annular flow channel 109 from the connecting pipe 112 as the outlet; when the oil cylinder contracts, the second oil port 103 enters oil, and the first oil port 102 returns oil. The small piston 111 extends under the action of the spring 110, and cyclopentane passes through the annular flow channel 109 and enters the first piston chamber 107 from the connecting pipe 112 as the inlet. The electromagnetic stop valve 114 opens when the pressure reaches a certain value. After multiple compressions, it becomes liquid, and the liquid passes through the annular flow channel 109 and flows around the cylinder body 101; and the liquid cyclopentane absorbs heat and becomes gaseous, and is compressed again to become liquid, and the cooling effect is achieved repeatedly. A temperature relay is installed in the system, and the opening amount of the electromagnetic stop valve 114 is controlled by the temperature relay. When the temperature is too high, the opening amount is larger, the liquid flow is larger, and the cooling effect is better; when the temperature is low, the opening amount is smaller, the liquid flow is smaller, and the cooling effect is relatively poor. In this way, the oil cylinder can be cooled to avoid affecting the service life and sealing effect of the oil cylinder seal due to excessive oil temperature, and prevent affecting the normal operation of the hydraulic system.

[0022] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A hydraulic cylinder with a self-cooling function, characterized in that: It includes a cylinder body, a first oil port, a second oil port, an elastic expansion member, two transmission components and a large piston; The cylinder body has a first piston chamber, a second piston chamber and an annular flow channel, the first piston chamber is located inside the cylinder body; the second piston chamber is connected to the first piston chamber and is located inside the cylinder body; the annular flow channels are respectively located on the sides of the cylinder body; the first oil port is fixedly connected to the cylinder body, connected to the second piston chamber, and is located outside the cylinder body; the second oil port is fixedly connected to the cylinder body, connected to the second piston chamber, and is located outside the cylinder body; the elastic telescopic part is arranged in the first piston chamber; the two transmission components are respectively connected to the first piston chamber, and are respectively connected to the annular flow channel, and are located inside the cylinder body; the large piston is slidably connected to the cylinder body and is located in the second piston chamber.

2. A hydraulic cylinder with a self-cooling function as claimed in claim 1, characterized in that: The elastic telescopic member includes a spring and a small piston; the spring is fixedly connected to the oil cylinder body and is located in the first piston cavity; the small piston is fixedly connected to the spring, slidably connected to the oil cylinder body, and is located in the first piston cavity.

3. A hydraulic cylinder with a self-cooling function as claimed in claim 2, characterized in that: The transmission component includes a connecting pipe and a one-way valve; the connecting pipe is connected to the first piston chamber and the annular flow channel, and is located inside the cylinder body; the one-way valve is fixedly connected to the connecting pipe and is located on the side of the connecting pipe.

4. A hydraulic cylinder with a self-cooling function as claimed in claim 3, characterized in that: The transmission component also includes an electromagnetic stop valve; the electromagnetic stop valve is fixedly connected to the connecting pipe and is located on the side of the connecting pipe.

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