CN220415887U

CN220415887U - Hydraulic cylinder

Info

Publication number: CN220415887U
Application number: CN202322081422.3U
Authority: CN
Inventors: 王川; 钱元友
Original assignee: Wuxi Juding Hydraulic Machinery Factory
Current assignee: Wuxi Juding Hydraulic Machinery Factory
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-01-30
Anticipated expiration: 2033-08-04

Abstract

A hydraulic cylinder relates to the technical field of engineering machinery, a semiconductor heat exchange plate and a controller are arranged on a cylinder body for containing hydraulic oil, the cold end of the semiconductor heat exchange plate can be in contact with a closed space connected with an extending inlet and an extending outlet, the hot end of the semiconductor heat exchange plate can be in contact with the outside of the cylinder body, and the semiconductor heat exchange plate is electrically connected with the controller; the temperature detection device and the temperature exchange device are arranged, so that the temperature of the hydraulic oil in the oil cylinder can be detected and adjusted on line, the hydraulic oil is stabilized in a proper working range, abnormal temperature rise caused by excessive heat accumulated in the working process of the hydraulic oil cylinder is avoided, the physical and chemical property change is caused, the hydraulic working efficiency is affected, and the normal operation of the hydraulic oil cylinder is ensured.

Description

Hydraulic cylinder

Technical Field

The utility model relates to the technical field of engineering machinery, in particular to a hydraulic cylinder.

Background

The hydraulic cylinder is a mechanical energy conversion engineering mechanical device for converting hydraulic energy into linear motion, when the piston structure is subjected to pressure provided by liquid, the hydraulic cylinder is pushed to drive the piston rod to move, so that power is output, in the process, hydraulic oil for providing pressure for the piston is also pressure generated by acting from the outside, therefore, on one hand, the hydraulic oil in the process can be in friction close contact with the conducting device to generate heat, on the other hand, the kinetic energy generated when the hydraulic oil acts on the piston rod is partially converted into internal energy, thus the temperature of the hydraulic oil in the using process is inevitably increased, when the heat in the hydraulic oil is accumulated to a certain extent, the temperature of the hydraulic oil is increased to a higher level, so that the physicochemical property of the hydraulic oil is changed, and the problem that the hydraulic efficiency is affected, such as the viscosity is obviously reduced, is solved.

Disclosure of Invention

In view of the above, the utility model aims to provide a hydraulic cylinder which can detect and stabilize the temperature of hydraulic oil in the hydraulic process and avoid the change of physicochemical properties of the oil liquid caused by the fact that the temperature of the oil liquid is raised too high, thereby affecting the hydraulic efficiency.

In order to solve at least one of the problems, the utility model is realized by the following technical scheme:

the utility model relates to a hydraulic oil cylinder, which comprises an oil cylinder body, a sealing cover, a piston rod, an extending inlet and an extending outlet and a resetting inlet and outlet, wherein the oil cylinder body is detachably provided with the sealing cover, the piston is arranged in a closed space formed by the oil cylinder body and the sealing cover and divides the closed space into two parts, the piston rod is connected to the piston and extends to the outside of the oil cylinder body through the sealing cover, the extending inlet and the resetting inlet and outlet are respectively connected to the two parts separated by the closed space, liquid entering the oil cylinder body through the extending inlet and outlet can push the piston rod to move towards the outside of the oil cylinder body, the oil cylinder body is also provided with a semiconductor heat exchange sheet and a controller, the cold end of the semiconductor heat exchange sheet can be in contact with the closed space connected with the extending inlet and outlet, the hot end of the semiconductor heat exchange sheet can be in contact with the outside of the oil cylinder body, and the semiconductor heat exchange sheet is electrically connected with the controller.

The utility model has the advantages that the temperature measuring cavity of the extension port and the heat exchange cavity are arranged in the closed space connected with the extension port, the extension port is communicated with the temperature measuring cavity of the extension port, the temperature measuring head of the extension port is arranged in the temperature measuring cavity of the extension port and is electrically connected with the controller, the temperature measuring cavity of the extension port and the heat exchange cavity are separated by the separation plate with the through hole, the cold end of the semiconductor heat exchange plate extends into the heat exchange cavity, and the heat exchange cavity is communicated with the closed space.

Further, a filter head is arranged on the heat exchange cavity.

The utility model is characterized in that a plurality of groups of sampling interlayers are arranged in the inner wall of the oil cylinder body, the sampling interlayers are connected into the closed space through at least two groups of through holes, and in-cylinder temperature measuring heads electrically connected with a controller are arranged in each group of sampling interlayers in a one-to-one correspondence manner.

Further, the sampling interlayers are distributed at equal intervals along the axial direction of the oil cylinder body.

The heat dissipation device is further arranged on the oil cylinder body and is electrically connected with the controller, and the heat dissipation device can dissipate heat of the hot end of the semiconductor heat exchange plate.

The utility model has the technical effects that:

the temperature detection device and the temperature exchange device are arranged, so that the temperature of the hydraulic oil in the oil cylinder can be detected and adjusted on line, the hydraulic oil is stabilized in a proper working range, abnormal temperature rise caused by excessive heat accumulated in the working process of the hydraulic oil cylinder is avoided, the physical and chemical property change is caused, the hydraulic working efficiency is affected, and the normal operation of the hydraulic oil cylinder is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

in the figure: the device comprises a 1-oil cylinder body, a 2-sealing cover, a 3-piston, a 4-piston rod, a 5-extension inlet and outlet, a 6-extension mouth temperature measuring cavity, a 7-heat exchanging cavity, an 8-semiconductor heat exchanging fin, a 9-controller, a 10-extension mouth temperature measuring head, an 11-in-cylinder temperature measuring head, a 12-sampling interlayer, a 13-reset inlet and outlet, a 14-partition plate, a 15-heat radiating device and a 16-filtering head.

Detailed Description

The present utility model will be described in further detail with reference to the following examples and drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model as claimed, but is merely representative of selected embodiments of the utility model.

Examples:

referring to fig. 1, a hydraulic ram,

the cylinder body 1 is detachably provided with a sealing cover 2, the piston 3 is arranged in a closed space formed by the cylinder body 1 and the sealing cover 2, the closed space is divided into two parts, the piston rod 4 is connected to the piston 3 and extends to the outside of the cylinder body 1 through the sealing cover 2, the extending inlet and outlet 5 and the restoring inlet and outlet 13 are respectively connected to the two parts separated by the closed space, wherein the middle liquid entering the cylinder body 1 through the extending inlet and outlet 5 can push the piston rod 4 to move towards the outside of the cylinder body 1, the middle liquid is injected into the cylinder body 1 through the extending inlet and outlet 5 and the restoring inlet and outlet 13 respectively, the piston 3 and the piston rod 4 are pushed to move according to a specified direction, when hydraulic oil is injected into the closed space connected with the extending inlet and outlet 5 through the extending inlet and outlet 5, the piston rod 4 is pushed out of the cylinder body 1, and when hydraulic oil is injected into the closed space connected with the restoring inlet and outlet 13 through the restoring inlet and outlet, the piston rod 4 is brought back into the cylinder body 1, so that a basic structure capable of realizing the function of a hydraulic cylinder is formed.

The cylinder body 1 is also provided with a semiconductor heat exchange plate 8 and a controller 9, the cold end of the semiconductor heat exchange plate 8 can be in contact with a closed space connected with the extending inlet and outlet 5, the hot end of the semiconductor heat exchange plate 8 can be in contact with the outside of the cylinder body 1, the semiconductor heat exchange plate 8 is electrically connected with the controller 9, the semiconductor heat exchange plate 8 is divided into a cold end for reducing the temperature and a hot end for improving the temperature, the cold end is wrapped with a heat conducting protective material and then is arranged in the cylinder body 1 to cool hydraulic oil, and as the region where the hydraulic oil does work during the normal operation of the hydraulic cylinder is usually positioned in the closed space connected with the extending inlet and outlet 5, the cold end of the semiconductor heat exchange plate 8 can be used for effectively cooling the hydraulic oil for driving the cylinder to work, the temperature of the hydraulic oil can be ensured to be stabilized in a normal range, heat accumulation caused by friction, work and the like of the hydraulic oil is avoided, the control of the semiconductor heat exchange plate 8 is controlled by the controller 9, and the power supply of the semiconductor heat exchange plate can be provided by the controller 9, such as external power supply or battery power supply.

In this embodiment, firstly, the temperature of the hydraulic oil entering the cylinder body 1 through the extension port temperature measuring head 10 in the extension port temperature measuring cavity 6 is measured, the extension port temperature measuring cavity 6 and the heat exchange cavity 7 are arranged in the closed space connected with the extension port temperature measuring cavity 5, the extension port temperature measuring cavity 5 is communicated with the extension port temperature measuring cavity 6, the extension port temperature measuring head 10 electrically connected with the controller 9 is arranged in the extension port temperature measuring cavity 6, the hydraulic oil entering the cylinder body 1 is likely to rise to be beyond the normal range due to the fact that the hydraulic oil passes through a hydraulic pipeline with a longer path, friction and the like, the temperature of the hydraulic oil is likely to rise to be beyond the normal range, therefore, the temperature measuring operation can confirm whether the temperature of the hydraulic oil needs to be controlled or not, the temperature information of the hydraulic oil is separated into the controller 9 for processing, the flow limiting effect is achieved, the impact is avoided, the cold end of the semiconductor heat exchange piece 8 extends into the heat exchange cavity 7, the heat exchange cavity 7 is communicated with the closed space, and the semiconductor heat exchange piece 8 can cool the hydraulic oil in the heat exchange cavity 7 until the temperature is stable to the normal level.

In some embodiments, the heat exchange cavity 7 is provided with the filter head 16, and the filter head 16 is a filter channel with a built-in filter screen, so that hydraulic oil entering the oil cylinder body 1 can be simply filtered, and the problems of crawling of the hydraulic oil cylinder caused by entering impurities and the like are avoided.

In some embodiments, be provided with multiunit sampling intermediate layer 12 in the hydro-cylinder body 1 inner wall, sampling intermediate layer 12 is connected to through at least two sets of through-holes in the airtight space, and be provided with in-cylinder temperature measuring head 11 with controller 9 electric connection in every group sampling intermediate layer 12 one-to-one, sampling intermediate layer 12 is arranged along hydro-cylinder body 1 axial equidistant distribution, sampling intermediate layer 12 is used for holding hydraulic oil and gets into, simultaneously allow the in-cylinder temperature measuring head 11 that its inside set up to get into sampling intermediate layer 12 to carry out the temperature measurement to the hydraulic oil that gets into sampling intermediate layer 12, more than two sets of through-holes on the sampling intermediate layer 12 can allow hydraulic oil business turn over sampling intermediate layer 12 better, sampling intermediate layer 12 is equispaced along hydro-cylinder body 1 axial equidistant distribution simultaneously, can obtain the hydraulic oil temperature information of a plurality of points in the hydro-cylinder, and collect controller 9 department, provide an audio-visual feedback for the accuse temperature effect of semiconductor heat exchanger 8, conveniently make the judgement to the temperature regulation.

The cylinder body 1 is further provided with a heat dissipation device 15 electrically connected with the controller 9, the heat dissipation device 15 can dissipate heat at the hot end of the semiconductor heat exchange fin 8, and as the semiconductor heat exchange fin 8 also needs to exchange heat outside the cylinder body 1 during refrigeration, the heat dissipation device 15 is arranged 8 to ensure the heat exchange effect of the semiconductor heat exchange fin 8, and the heat dissipation device 15 can adopt devices such as a heat dissipation fan.

When the device is used, hydraulic oil is injected into the cylinder body 1 through the extension inlet and outlet 5, the piston 3 and the piston rod 4 are pushed to move towards the outside of the cylinder body 1, at the moment, the temperature of the hydraulic oil entering the cylinder body 1 is monitored on line through the extension inlet temperature measuring head 10, when the temperature of the hydraulic oil exceeds a normal value, the semiconductor heat exchange plate 8 is controlled to be started through the controller 9, the hydraulic oil is refrigerated, and temperature information of the hydraulic oil is collected through the in-cylinder temperature measuring head 11 in the sampling interlayer 12 until the temperature of the hydraulic oil falls back and is kept in a normal range.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and should not be construed as limiting the present utility model.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the technical scope of the present utility model disclosed in the embodiments of the present utility model should be covered by the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. The utility model provides a hydraulic cylinder, includes hydro-cylinder body (1), sealed lid (2), piston (3), piston rod (4), extends import and export (5), restore import and export (13), wherein, detachably is provided with sealed lid (2) on hydro-cylinder body (1), piston (3) set up in the airtight space that hydro-cylinder body (1) and sealed lid (2) are constituteed, and separate airtight space into two parts, piston rod (4) connect on piston (3) and pass sealed lid (2) and extend to hydro-cylinder body (1) outside, extend import and export (5) and restore import and export (13) and be connected respectively to in airtight space is separated two parts, wherein go into the well liquid of hydro-cylinder body (1) through extension import and export (5) and can promote piston rod (4) towards hydro-cylinder body (1) outside motion, its characterized in that still is provided with semiconductor heat exchanger piece (8) and controller (9) on hydro-cylinder body (1), semiconductor heat exchanger piece (8) cold junction can with extend import and export (5) be connected airtight space contact, its hot junction can with hydro-cylinder body (1) outside contact, and semiconductor heat exchanger (8) electric connection.

2. A hydraulic ram according to claim 1, wherein: an extension port temperature measuring cavity (6) and a heat exchange cavity (7) are arranged in a closed space connected with the extension port temperature measuring cavity (5), the extension port temperature measuring cavity (6) is communicated with the extension port temperature measuring cavity (5), an extension port temperature measuring head (10) electrically connected with a controller (9) is arranged in the extension port temperature measuring cavity (6), the extension port temperature measuring cavity (6) and the heat exchange cavity (7) are separated by a separation plate (14) with a through hole, the cold end of a semiconductor heat exchange plate (8) extends into the heat exchange cavity (7), and the heat exchange cavity (7) is communicated with the closed space.

3. A hydraulic ram according to claim 2, wherein: and a filter head (16) is arranged on the heat exchange cavity (7).

4. A hydraulic ram according to claim 1, wherein: a plurality of groups of sampling interlayers (12) are arranged in the inner wall of the oil cylinder body (1), the sampling interlayers (12) are connected into the closed space through at least two groups of through holes, and in-cylinder temperature measuring heads (11) electrically connected with the controller (9) are arranged in each group of sampling interlayers (12) in a one-to-one correspondence mode.

5. A hydraulic ram according to claim 4, wherein: the sampling interlayers (12) are distributed at equal intervals along the axial direction of the oil cylinder body (1).

6. A hydraulic ram according to claim 1, wherein: the heat dissipation device (15) is further arranged on the oil cylinder body (1) and electrically connected with the controller (9), and the heat dissipation device (15) can dissipate heat of the heat end of the semiconductor heat exchange plate (8).