阅读说明：本技术 一种液压油缸的双向回流型冷却结构 (Two-way backward flow type cooling structure of hydraulic cylinder ) 是由 不公告发明人 于 2021-10-09 设计创作，主要内容包括：本发明公开了一种液压油缸的双向回流型冷却结构,属于液压油缸领域,通过在现有回油路上增设双路冷却器来有效提高冷却效果,通过将双路冷却器与液压油缸的两个油路连通形成双向回流油路,这样在油缸的两个油路进出油时实现同时冷却降温,从而有效提高液压油的冷却效果,通过在导热转杆上设置吸热驱动片,利用液压油的流动作用使其转动,导热转杆进而带动散热器转动,从而加快空气对流速度,有效提高散热效果,通过在双路冷却器内部填充去离子水,利用导流管道的热传递作用来吸收液压油的热量,并通过散热件对去离子水进行散热,从而进一步提高冷却效果。(The invention discloses a bidirectional reflux type cooling structure of a hydraulic oil cylinder, belonging to the field of hydraulic oil cylinders, the cooling effect is effectively improved by additionally arranging the double-path cooler on the existing oil return path, and the double-path cooler is communicated with the two oil paths of the hydraulic oil cylinder to form a two-way return oil path, so that the cooling is realized simultaneously when the two oil paths of the oil cylinder enter and exit oil, thereby effectively improving the cooling effect of the hydraulic oil, the heat absorption driving sheet is arranged on the heat conduction rotating rod, the heat conduction rotating rod rotates by utilizing the flowing action of the hydraulic oil, and then the heat conduction rotating rod drives the radiator to rotate, thereby accelerate air convection speed, effectively improve the radiating effect, through at inside the packing deionized water of double-circuit cooler, utilize the heat transfer effect of water conservancy diversion pipeline to absorb the heat of hydraulic oil to dispel the heat to the deionized water through the radiating piece, thereby further improve the cooling effect.)

1. The utility model provides a two-way backward flow type cooling structure of hydraulic cylinder, includes hydro-cylinder body, oil pipe and double-circuit cooler (1), double-circuit cooler (1) communicates its characterized in that through oil pipe and hydro-cylinder body: two oil cavities (101) which are symmetrically arranged are formed in the double-path cooler (1), a heat conduction rotating rod (2) is rotatably connected in each oil cavity (101), and the side wall of the heat-conducting rotating rod (2) is fixedly connected with a plurality of heat-absorbing driving sheets (3), one end of the heat-conducting rotating rod (2) penetrates through the oil cavity (101) to the outside, the outer end of the heat-conducting rotating rod (2) is fixedly connected with a radiator (4), the inner wall of the oil cavity (101) which is positioned below the heat-conducting rotating rod (2) is fixedly connected with a diversion pipeline (5), and deionized water (6) is filled between the diversion pipeline (5) and the inner wall of the oil cavity (101), a plurality of radiating pieces (7) are embedded in the side wall of the lower end of the two-way cooler (1), and the heat dissipation piece (7) penetrates through the side wall of the two-way cooler (1) to the deionized water (6), the upper end lateral wall of double-circuit cooler (1) is inlayed and is had a plurality of warning pieces (8).

2. The two-way backflow type cooling structure of a hydraulic cylinder according to claim 1, characterized in that: warning piece (8) include concave shell (801) with two-way cooler (1) outside intercommunication, the inner wall sliding connection of concave shell (801) has slide (802), the upper end fixedly connected with branch (803) of slide (802), and the upper end fixedly connected with reflection of light hemisphere (804) of branch (803), endothermic inflation ball (805) has been placed between the lower extreme inner wall of slide (802) and concave shell (801), and the lower extreme of endothermic inflation ball (805) is inlayed and is had the heat absorption pole (806) that runs through to in oil pocket (101).

3. The two-way backflow type cooling structure of a hydraulic cylinder according to claim 2, characterized in that: the outer surface of the reflecting hemisphere (804) is bonded with a plurality of reflecting sheets, and the heat absorption rod (806) is made of a high-thermal-conductivity material.

4. The two-way backflow type cooling structure of a hydraulic cylinder according to claim 1, characterized in that: the heat dissipation piece (7) comprises a heat transfer rod (701) penetrating through the side wall of the double-path cooler (1), one end of the heat dissipation piece (7) located in the double-path cooler (1) is fixedly connected with a heat absorption ball (702), and one end of the heat transfer rod (701) located outside the double-path cooler (1) is fixedly connected with a heat dissipation hemisphere (703).

5. The two-way backflow type cooling structure of a hydraulic cylinder according to claim 4, characterized in that: the side wall of the radiating hemisphere (703) is fixedly connected with a plurality of radiating fins (704), and the radiating fins (704) are distributed in a scattering shape.

6. The two-way backflow type cooling structure of a hydraulic cylinder according to claim 1, characterized in that: the heat absorption driving sheet (3) is fan-shaped, and the surface of the heat absorption driving sheet (3) is provided with a continuous concave-convex curved surface (301).

7. The two-way backflow type cooling structure of a hydraulic cylinder according to claim 1, characterized in that: the heat conduction rotating rod (2), the heat absorption driving sheet (3) and the radiator (4) are all made of heat conduction materials, and the heat conduction of the radiator (4) is higher than that of the heat conduction rotating rod (2).

8. The two-way backflow type cooling structure of a hydraulic cylinder according to claim 1, characterized in that: the radiator (4) comprises two identical radiating circular sheets, and a plurality of netted heat-conducting sheets are fixedly connected between the two radiating circular sheets.

9. The two-way backflow type cooling structure of a hydraulic cylinder according to claim 1, characterized in that: the flow guide pipeline (5) is of a horn-shaped structure, and the flow guide pipeline (5) is made of a high-thermal-conductivity material.

10. The two-way backflow type cooling structure of a hydraulic cylinder according to claim 1, characterized in that: the two-way cooler (1) comprises two identical balls which are connected into a whole.

Technical Field

The invention relates to the field of hydraulic oil cylinders, in particular to a bidirectional backflow type cooling structure of a hydraulic oil cylinder.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When it is used to implement reciprocating motion, it can omit speed-reducing device, and has no transmission gap, and its motion is stable, so that it can be extensively used in various mechanical hydraulic systems. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area; the hydraulic cylinder is basically composed of a cylinder barrel and a cylinder cover, a piston and a piston rod, a sealing device, a buffering device and an exhaust device. The damping device and the exhaust device are determined according to specific application occasions, and other devices are necessary.

The hydraulic cylinder is an actuating element in a hydraulic transmission system and is an energy conversion device for converting hydraulic energy into mechanical energy. The hydraulic motor performs a continuous rotary motion, while the hydraulic cylinder performs a reciprocating motion. The hydraulic cylinder has three types, namely a piston cylinder, a plunger cylinder and a swing cylinder, wherein the piston cylinder and the plunger cylinder realize reciprocating linear motion and output speed and thrust, and the swing cylinder realizes reciprocating swing and outputs angular speed (rotating speed) and torque. The hydraulic cylinder may be used in combination of two or more or in combination with other mechanisms, in addition to being used singly. To accomplish a particular function. The hydraulic cylinder has simple structure and reliable work and is widely applied to a hydraulic system of a machine tool.

Hydraulic cylinder is because hydraulic oil is compressed at the operation in-process, therefore the hydraulic oil temperature of backward flow is higher, consequently all can set up cooling structure in the oil tank, but current cooling structure result is too simple, and its heat dissipation cooling effect is not ideal, leads to the hydraulic oil temperature of backward flow higher to the life of hydraulic oil has been reduced.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a bidirectional backflow type cooling structure of a hydraulic oil cylinder, the cooling effect is effectively improved by additionally arranging the double-path cooler on the existing oil return path, and the double-path cooler is communicated with the two oil paths of the hydraulic oil cylinder to form a two-way return oil path, so that the cooling is realized simultaneously when the two oil paths of the oil cylinder enter and exit oil, thereby effectively improving the cooling effect of the hydraulic oil, the heat absorption driving sheet is arranged on the heat conduction rotating rod, the heat conduction rotating rod rotates by utilizing the flowing action of the hydraulic oil, and then the heat conduction rotating rod drives the radiator to rotate, thereby accelerate air convection speed, effectively improve the radiating effect, through at inside the packing deionized water of double-circuit cooler, utilize the heat transfer effect of water conservancy diversion pipeline to absorb the heat of hydraulic oil to dispel the heat to the deionized water through the radiating piece, thereby further improve the cooling effect.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A bidirectional reflux type cooling structure of a hydraulic oil cylinder comprises an oil cylinder body, an oil pipe and a double-path cooler, the double-path cooler is communicated with the oil cylinder body through an oil pipe, two symmetrically arranged oil cavities are formed in the double-path cooler, a heat conduction rotating rod is rotatably connected in each oil cavity, and the side wall of the heat-conducting rotating rod is fixedly connected with a plurality of heat-absorbing driving sheets, one end of the heat-conducting rotating rod penetrates through the oil cavity to the outside, the outer end of the heat-conducting rotating rod is fixedly connected with a radiator, the inner wall of the oil cavity below the heat-conducting rotating rod is fixedly connected with a diversion pipeline, deionized water is filled between the diversion pipeline and the inner wall of the oil cavity, a plurality of heat dissipation pieces are embedded on the side wall of the lower end of the two-way cooler, and the radiating piece penetrates through the side wall of the double-path cooler to deionized water, and a plurality of warning pieces are embedded in the side wall of the upper end of the double-path cooler.

Further, the warning piece includes the spill shell with the outside intercommunication of double-circuit cooler, the inner wall sliding connection of spill shell has the slide, the upper end fixedly connected with branch of slide, and the upper end fixedly connected with reflection of light hemisphere of branch, the heat absorption inflation ball has been placed between the lower extreme inner wall of slide and spill shell, and the lower extreme of heat absorption inflation ball inlays and has the heat absorption pole that runs through to in the oil pocket, makes the heat absorption inflation ball expand to the maximum condition when the hydraulic oil temperature of backward flow is too high, and the heat absorption inflation ball upwards pushes up the slide this moment to let reflection of light hemisphere expose, reflection of light hemisphere is glisten under light like this, makes things convenient for maintainer to see in order in time to take measures, effectively prolongs the life-span of hydraulic oil.

Furthermore, a plurality of reflection of light pieces are bonded to the surface of reflection of light hemisphere, can transmit the too high signal of hydraulic oil temperature to external personnel like this, the heat absorption pole adopts high heat conductivity material, is the heat that the expansion ball that lets the heat absorption can absorb hydraulic oil.

Further, the radiating piece is including the heat transfer pole that runs through the double-circuit cooler lateral wall, the one end fixedly connected with heat absorption ball that the radiating piece is located the double-circuit cooler, the heat transfer pole is located the outer one end fixedly connected with heat dissipation hemisphere of double-circuit cooler, and the heat of hydraulic oil passes through the water conservancy diversion pipeline and transmits for deionized water, and the heat of deionized water transmits for outside heat dissipation hemisphere through heat absorption ball and heat transfer pole to the realization is to the heat dissipation of deionized water.

Furthermore, the side wall of the radiating hemisphere is fixedly connected with a plurality of radiating fins, and the radiating fins are distributed in a scattering shape, so that the radiating fins increase the heat exchange area, and the radiating effect is effectively improved.

Furthermore, the heat absorption driving sheet is fan-shaped, and the surface of the heat absorption driving sheet is provided with a continuous concave-convex curved surface so as to increase the heat exchange area, thereby effectively improving the cooling effect of the hydraulic oil.

Furthermore, heat conduction bull stick, heat absorption driving plate and radiator all adopt the heat conductivity material, and the heat conductivity of radiator is higher than the heat conductivity of heat conduction bull stick, is in order to ensure that the heat energy of hydraulic oil can high-efficiently transmit to the radiator to guarantee the cooling effect.

Furthermore, the radiator comprises two identical radiating circular sheets, and a plurality of net-shaped heat conducting sheets are fixedly connected between the two radiating circular sheets, so that the heat exchange area is kept to the maximum extent, and the cooling effect is improved.

Furthermore, the diversion pipeline is of a horn-shaped structure, so that hydraulic oil can conveniently enter and exit, the diversion pipeline is made of a high-thermal-conductivity material, and heat of the hydraulic oil is transferred to deionized water through the diversion pipeline.

Furthermore, the two-way cooler comprises two identical balls which are connected into a whole, so that the two oil ways can be cooled simultaneously when the hydraulic oil cylinder enters and exits oil.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) this scheme is through addding the double-circuit cooler on current oil return way and effectively improving the cooling effect, form two-way backward flow oil circuit through two oil circuit intercommunications with double-circuit cooler and hydraulic cylinder, realize cooling and cooling simultaneously when two oil circuit business turn over oils of hydro-cylinder like this, thereby effectively improve the cooling effect of hydraulic oil, through set up the heat absorption drive plate on the heat conduction bull stick, utilize the flow effect of hydraulic oil to make its rotation, the heat conduction bull stick and then drive the radiator rotation, thereby accelerate air convection speed, effectively improve the radiating effect, through at the inside deionized water that fills of double-circuit cooler, the heat that utilizes the heat transfer effect of water conservancy diversion pipeline to absorb hydraulic oil, and dispel the heat to the deionized water through the radiating piece, thereby further improve the cooling effect.

(2) The warning piece includes the spill shell with the outside intercommunication of double-circuit cooler, the inner wall sliding connection of concave shell has the slide, the upper end fixedly connected with branch of slide, and the upper end fixedly connected with reflection of light hemisphere of branch, the heat absorption inflation ball has been placed between the lower extreme inner wall of slide and concave shell, and the lower extreme of heat absorption inflation ball inlays and has the heat absorption pole that runs through to in the oil pocket, make the heat absorption inflation ball expand to the maximum condition when the hydraulic oil temperature of backward flow is too high, the heat absorption inflation ball upwards pushes up the slide this moment, thereby let reflection of light hemisphere expose, reflection of light hemisphere can reflect light under light like this, make things convenient for maintainer to see in time to take measures, effectively prolong the life-span of hydraulic oil and hit.

(3) The outer surface of the light reflecting hemisphere is bonded with a plurality of light reflecting sheets, so that a signal that the temperature of hydraulic oil is too high can be transmitted to external personnel, and the heat absorbing rod is made of a high-thermal-conductivity material and is used for enabling the heat absorbing expansion ball to absorb the heat of the hydraulic oil.

(4) The heat dissipation piece is including the heat transfer pole that runs through the double-circuit cooler lateral wall, and the one end fixedly connected with heat absorption ball that the heat dissipation piece is located the double-circuit cooler, and the heat transfer pole is located the outer one end fixedly connected with heat dissipation hemisphere of double-circuit cooler, and the heat of hydraulic oil passes through the water conservancy diversion pipeline and transmits for the deionized water, and the heat of deionized water passes through heat absorption ball and heat transfer pole and transmits for outside heat dissipation hemisphere to the realization is to the heat dissipation of deionized water.

(5) The side wall of the radiating hemisphere is fixedly connected with a plurality of radiating fins which are distributed in a scattering shape, the radiating fins increase the heat exchange area, and the radiating effect is effectively improved.

(6) The heat absorption driving sheet is fan-shaped, and the surface of the heat absorption driving sheet is provided with a continuous concave-convex curved surface so as to increase the heat exchange area and effectively improve the cooling effect of the hydraulic oil.

(7) The heat conduction rotating rod, the heat absorption driving sheet and the radiator are all made of heat-conducting materials, and the heat conductivity of the radiator is higher than that of the heat conduction rotating rod, so that the heat of hydraulic oil can be efficiently transmitted to the radiator, and the cooling effect is guaranteed.

(8) The radiator comprises two identical radiating circular sheets, and a plurality of netted heat conducting sheets are fixedly connected between the two radiating circular sheets, so that the heat exchange area is kept to the maximum extent, and the cooling effect is improved.

(9) The diversion pipeline is of a horn-shaped structure, so that hydraulic oil can conveniently enter and exit, the diversion pipeline is made of a high-thermal-conductivity material, and heat of the hydraulic oil is transferred to deionized water through the diversion pipeline.

(10) The double-path cooler comprises two identical balls which are connected into a whole, so that the two paths of oil paths can be cooled simultaneously when the hydraulic oil cylinder enters and exits oil.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic front view of a dual path chiller according to the present invention;

FIG. 3 is a side view of the heat absorbing driver blade of the present invention;

FIG. 4 is a front view of a heat sink of the present invention;

FIG. 5 is a schematic front view of a warning device in accordance with the present invention;

FIG. 6 is a schematic diagram illustrating a state of bi-directional hydraulic oil backflow according to the present invention;

FIG. 7 is a schematic diagram illustrating a normal oil temperature operation status of hydraulic oil according to the present invention;

FIG. 8 is a schematic diagram of the high temperature operation of hydraulic oil according to the present invention.

The reference numbers in the figures illustrate:

the heat absorption type heat pump comprises a 1 double-path cooler, 101 oil cavities, 2 heat conduction rotating rods, 3 heat absorption driving plates, 301 concave-convex curved surfaces, 4 radiators, 5 diversion pipelines, 6 deionized water, 7 heat dissipation pieces, 701 heat transfer rods, 702 heat absorption balls, 703 heat dissipation hemispheres, 704 heat dissipation pieces, 8 warning pieces, 801 concave shells, 802 sliding plates, 803 supporting rods, 804 light reflection hemispheres, 805 heat absorption expansion balls and 806 heat absorption rods.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-8, a two-way backflow type cooling structure of a hydraulic cylinder, referring to fig. 1 and 3, includes a cylinder body, an oil pipe and a two-way cooler 1, where the two-way cooler 1 includes two identical balls, and the two balls are connected into a whole, so that two oil ways can be simultaneously cooled when the hydraulic cylinder is fed with oil, the two-way cooler 1 is communicated with the cylinder body through the oil pipe, two symmetrically-arranged oil cavities 101 are formed in the two-way cooler 1, a heat-conducting rotating rod 2 is rotatably connected inside each oil cavity 101, and a plurality of heat-absorbing driving plates 3 are fixedly connected to side walls of the heat-conducting rotating rod 2, the heat-absorbing driving plates 3 are fan-shaped, and the surfaces of the heat-absorbing driving plates 3 are provided with continuous concave-convex curved surfaces 301 to increase the area of heat exchange, thereby effectively improving the cooling effect of the hydraulic oil;

referring to fig. 2, one end of a heat conducting rotating rod 2 penetrates through an oil chamber 101 to the outside, the outer end of the heat conducting rotating rod 2 is fixedly connected with a radiator 4, the radiator 4 comprises two identical heat radiating wafers, and a plurality of net-shaped heat conducting fins are fixedly connected between the two heat radiating wafers, so as to maintain the heat exchange area to the maximum extent, thereby improving the cooling effect, a diversion pipeline 5 is fixedly connected to the inner wall of the oil chamber 101 below the heat conducting rotating rod 2, the diversion pipeline 5 is in a horn-shaped structure, thereby facilitating the entering and exiting of hydraulic oil, the diversion pipeline 5 is made of a high heat conductivity material, the heat of the hydraulic oil is transferred to deionized water 6 through the diversion pipeline 5, deionized water 6 is filled between the diversion pipeline 5 and the inner wall of the oil chamber 101, the heat conducting rotating rod 2, the heat absorbing driving fins 3 and the radiator 4 are made of a heat conductivity material, and the heat conductivity of the radiator 4 is higher than that of the heat conducting rotating rod 2, the purpose is to ensure that the heat of the hydraulic oil can be efficiently transferred to the radiator 4, thereby ensuring the cooling effect;

referring to fig. 4, 6 and 7, a plurality of heat dissipation members 7 are embedded in the sidewall of the lower end of the dual cooler 1, the heat dissipation member 7 penetrates through the side wall of the two-way cooler 1 to the deionized water 6, the heat dissipation member 7 comprises a heat transfer rod 701 penetrating through the side wall of the two-way cooler 1, one end of the heat dissipation member 7, which is positioned in the two-way cooler 1, is fixedly connected with a heat absorption ball 702, one end of the heat transfer rod 701, which is positioned outside the two-way cooler 1, is fixedly connected with a heat dissipation hemisphere 703, the heat of the hydraulic oil is transferred to the deionized water 6 through a flow guide pipeline 5, the heat of the deionized water 6 is transferred to the external heat dissipation hemisphere 703 through the heat absorption ball 702 and the heat transfer rod 701, thereby realizing the heat dissipation of the deionized water 6, the side wall of the heat dissipation hemisphere 703 is fixedly connected with a plurality of heat dissipation fins 704, the plurality of radiating fins 704 are distributed in a scattering shape, and the radiating fins 704 increase the heat exchange area and effectively improve the radiating effect;

referring to fig. 5, 7 and 8, a plurality of warning members 8 are embedded in the upper side wall of the dual cooler 1, each warning member 8 includes a concave shell 801 communicated with the outside of the dual cooler 1, a sliding plate 802 is slidably connected to the inner wall of the concave shell 801, a support rod 803 is fixedly connected to the upper end of the sliding plate 802, a reflective hemisphere 804 is fixedly connected to the upper end of the support rod 803, a heat absorption expansion ball 805 is disposed between the sliding plate 802 and the inner wall of the lower end of the concave shell 801, a heat absorption rod 806 penetrating into the oil cavity 101 is embedded at the lower end of the heat absorption expansion ball 805, the heat absorption expansion ball 805 expands to the maximum state when the temperature of the returned hydraulic oil is too high, the heat absorption expansion ball 805 pushes the sliding plate 802 upwards, so that the reflective hemisphere 804 can reflect light under light, maintenance personnel can see the reflective hemisphere 804 to take measures in time, the service life of the hydraulic oil is effectively prolonged, a plurality of reflective sheets are adhered to the outer surface of the reflective hemisphere 804, this can transmit a signal to the outside staff that the hydraulic oil temperature is too high, and the heat absorption rod 806 is made of a material with high thermal conductivity so that the heat absorption expansion ball 805 can absorb the heat of the hydraulic oil.

The working principle of the device is as follows: when hydraulic oil flows through the two-way cooler 1, heat of the hydraulic oil is absorbed by the heat absorption driving sheet 3 and is transmitted to the heat conduction rotating rod 2, the heat conduction rotating rod 2 further transmits the heat to the external radiator 4, cooling of the hydraulic oil is achieved, the hydraulic oil impacts on the heat absorption driving sheet 3 to enable the heat absorption driving sheet 3 to drive the heat conduction rotating rod 2 to rotate, therefore, the convection speed of the rotating radiator 4 and air is increased, the cooling effect is effectively improved, meanwhile, the heat of the hydraulic oil is transmitted to the deionized water 6 through the flow guide pipeline 5, the cooling effect can be further improved, the heat of the deionized water 6 is transmitted to the external heat dissipation hemisphere 703 through the heat absorption ball 702 and the heat transmission rod 701, accordingly, heat dissipation of the deionized water 6 is achieved, when the hydraulic oil is too high in temperature and cannot be cooled in time, the heat of the hydraulic oil is absorbed by the heat absorption expansion ball 805 through the heat absorption rod 806, and when the heat absorption expansion ball 805 expands to the maximum, the light reflecting hemisphere 804 is ejected out to be exposed outside, so that the light reflecting hemisphere 804 can reflect light under light, maintenance personnel can see the light reflecting hemisphere conveniently to take measures in time, and the service life of hydraulic oil is effectively prolonged.

Effectively improve the cooling effect through add double-circuit cooler 1 on current oil return way, form two-way backward flow oil circuit through two oil circuit intercommunications with double-circuit cooler 1 and hydraulic cylinder, realize cooling down simultaneously when two oil circuit business turn over oils of hydro-cylinder like this, thereby effectively improve the cooling effect of hydraulic oil, through set up heat absorption driving plate 3 on heat conduction bull stick 2, utilize the mobile effect of hydraulic oil to make it rotate, heat conduction bull stick 2 and then drive radiator 4 and rotate, thereby accelerate air convection velocity, effectively improve the radiating effect, through at 1 inside deionized water 6 that fills of double-circuit cooler, utilize the heat transfer effect of water conservancy diversion pipeline 5 to absorb the heat of hydraulic oil, and dispel the heat to deionized water 6 through radiating piece 7, thereby further improve the cooling effect.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.