CN210919654U

CN210919654U - Long-acting cooling device of hydraulic cylinder

Info

Publication number: CN210919654U
Application number: CN201921545992.0U
Authority: CN
Inventors: 蒋英; 罗伟
Original assignee: Hunan Tianhong Hydraulic Machinery Co ltd
Current assignee: Hunan Tianhong Hydraulic Machinery Co ltd
Priority date: 2019-09-18
Filing date: 2019-09-18
Publication date: 2020-07-03
Anticipated expiration: 2029-09-18

Abstract

The utility model discloses a long-term cooling device of hydraulic cylinder, include: the heat insulation shell comprises a hollow cylinder, a left sealing cover and a right sealing cover which are respectively movably arranged at two ends of the cylinder, and an asbestos heat insulation layer is arranged in the cylinder; a main part, the main part includes that a coil pipe condenser pipe, both ends outer wall are equipped with screwed tubular metal resonator and control box, the inside cooler that sets up of control box, and the output of cooler with the input of coil pipe condenser pipe is linked together, the tubular metal resonator is located the inboard of coil pipe condenser pipe. The utility model provides a long-term cooling device of hydraulic cylinder adopts the mode that cools down to hydraulic oil, with the help of the mobile return circuit of hydraulic oil, realizes the cooling to the pneumatic cylinder to the device when the installation, only need connect in the pneumatic cylinder lower extreme on the oil pipeline can, avoided influencing the flexible radius of excavator arm.

Description

Long-acting cooling device of hydraulic cylinder

Technical Field

The utility model relates to a pneumatic cylinder cooling technology field relates to a long-term cooling device of hydraulic cylinder particularly.

Background

The hydraulic cylinder device has simple structure and reliable operation, can avoid the installation of a speed reducer when realizing the reciprocating motion by using the hydraulic cylinder device in the actual use, has no transmission clearance in the motion process, and moves stably, thereby being widely applied to hydraulic systems of various machines.

However, when the hydraulic oil cylinder continues to work for a long time, the oil temperature inside the hydraulic oil cylinder is increased, the traveling speed of the hydraulic oil cylinder is slowed, and the hydraulic oil cylinder finally stops working.

The scheme of present solution adopts and all to cool down the cooling to the pneumatic cylinder local, especially in the power system of excavator, and this kind of scheme just has obvious not enough, can seriously influence the flexible radius of excavator arm, has reduced the operation coverage area of excavator, and how guarantee when carrying out effectual cooling to the pneumatic cylinder, avoid influencing the operation of excavator, become in order to present stage to wait for the problem that solves urgently.

SUMMERY OF THE UTILITY MODEL

In view of the above problems in the prior art, an aspect of the present invention is to provide a long-term cooling device for a hydraulic cylinder to solve the above problems in the background.

In order to achieve the above object, the utility model provides a pair of long-term cooling device of hydraulic cylinder, include:

the heat insulation shell comprises a hollow cylinder, a left sealing cover and a right sealing cover which are respectively movably arranged at two ends of the cylinder, and an asbestos heat insulation layer is arranged in the cylinder;

a main part, the main part includes that coil pipe condenser pipe, both ends outer wall are equipped with screwed tubular metal resonator and control box, the inside cooler that sets up of control box, and the output of cooler with the input of coil pipe condenser pipe is linked together, the tubular metal resonator is located the inboard of coil pipe condenser pipe, and to passing through hydraulic oil in the tubular metal resonator cools down, the main part is located heat preservation shell's inside, just the both ends of tubular metal resonator run through respectively and extend the left side closing cap with the outside of right side closing cap.

Preferably, the outer wall of the hollow cylinder is welded with four ear blocks.

Preferably, the ports at both ends of the hollow cylinder are sleeved with sealing rings.

Preferably, the inner wall of the left side cover is provided with a rigid foam pad outer cover.

Preferably, the outer walls of the left side sealing cover and the right side sealing cover are both provided with fixing screws, and the cylinder is connected with the left side sealing cover and the right side sealing cover through the fixing screws.

Preferably, the clamping plate A and the clamping plate B are symmetrically sleeved on the outer wall of the metal pipe, the coil type condensation pipe is located between the clamping plate A and the clamping plate B, and the control box is fixedly installed on the outer wall of the other side of the clamping plate A.

Preferably, the outer wall of one side of the clamping plate B is provided with a clamping table, and the clamping plate B is clamped in the cylindrical port through the clamping table.

Preferably, the control box and the clamping plate A are both positioned on the inner side of the left side cover.

Preferably, the metal pipe is a copper pipe or an aluminum pipe with good thermal conductivity.

Preferably, a PCB is disposed inside the control box, and a reference resistor having a resistance value kept within a predetermined range with respect to the cooler is disposed on the PCB.

Preferably, the type of the cooler is FRYKA.

As a preference, the first and second liquid crystal compositions are,

1) when the oil pipe is installed, an oil pipeline at the lower end of the hydraulic cylinder is cut, then two ends of the metal pipe are respectively installed on the oil pipe, and the oil pipe is fixed by using an external plastic sealing sleeve in a threaded installation mode;

2) when cooling down the pneumatic cylinder, start the cooler in the control box, and under the work of cooler, make coil pipe formula condenser pipe temperature drop, reduce the temperature in the space in the lagging casing rapidly, because the extremely strong material of heat conductivity that the tubular metal resonator adopted is made, so the temperature of tubular metal resonator also can drop sharply, consequently when hydraulic oil passes through the tubular metal resonator, can be cooled down rapidly, when getting into in the pneumatic cylinder, just can realize advancing the purpose of cooling down to the pneumatic cylinder.

Advantageous effects

Compared with the prior art, the utility model provides a pair of long-term cooling device of hydraulic cylinder possesses following beneficial effect: the utility model provides a device, what adopt is the mode that cools down to hydraulic oil, with the help of the return circuit that hydraulic oil flows, realize the cooling to the pneumatic cylinder, and the device is in the installation, only need connect on the oil pipeline of pneumatic cylinder lower extreme can, the flexible radius of excavator arm has been avoided influencing, in addition, when using this device, only need to install the device on the oil pipeline of pneumatic cylinder lower extreme, it is convenient to install, the suitability of device is increased, thereby the marketing power and the competitiveness of device have been increased.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

This document provides an overview of various implementations or examples of the technology described in this disclosure, and is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

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

FIG. 2 is a schematic view of the structure of the main body and the thermal insulation casing of the present invention;

FIG. 3 is a schematic view of the explosion structure of the present invention;

fig. 4 is a schematic view of the cross-sectional structure of the cylinder of the present invention.

The main reference numbers:

1. a heat-insulating shell; 2. a main body; 10. a cylinder; 11. a left side cover; 12. a right side cover; 13. an asbestos insulation layer; 14. an ear piece; 15. a seal ring; 16. a set screw; 17. a rigid foam pad cover; 20. a coil type condenser pipe; 21. a metal tube; 22. a clamping and connecting plate A; 23. a clamping and connecting plate B; 24. a control box; 25. a clamping table.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be described below clearly and completely with reference to the accompanying drawings of the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the disclosure without any inventive step, are within the scope of protection of the disclosure.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the word "comprising" or "comprises", and the like, in this disclosure is intended to mean that the elements or items listed before that word, include the elements or items listed after that word, and their equivalents, without excluding other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present disclosure clear and concise, a detailed description of known functions and known components have been omitted from the present disclosure.

Referring to fig. 1-4, a long-term cooling device for a hydraulic cylinder includes: insulating casing 1 and the main part 2 of installing in insulating casing 1, hydraulic oil passes through in the metal pipe 20 entering pneumatic cylinder of main part 2, at this in-process, coil pipe type condenser pipe 20 on the main part 2 is under the mating reaction of the inside cooler that sets up of control box 24, the hydraulic oil that flows in the metal pipe 20 cools down, thereby realized the cooling to the pneumatic cylinder, and the device is in the installation, only need connect on the oil pipeline of pneumatic cylinder lower extreme can, the flexible radius of excavator arm has been avoided influencing, the normal operation of excavator is influenced.

Therefore, the problems that the cooling of the hydraulic cylinder local machine is adopted in the existing solving scheme, particularly in a power system of an excavator, the scheme has obvious defects, the telescopic radius of the mechanical arm of the excavator can be seriously influenced, the operation coverage area of the excavator is reduced, and the operation of the excavator is avoided being influenced while the hydraulic cylinder is effectively cooled are solved.

As a further technical solution provided by the present application, the following is specifically provided:

as shown in fig. 3 and 4, the heat-insulating casing 1 includes a hollow cylinder 10, and a left side cover 11 and a right side cover 12 movably mounted at two ends of the cylinder 10, respectively, and an asbestos heat-insulating layer 13 is disposed inside the cylinder 10 for reducing the emission of cooling gas when the main body 2 operates.

As shown in fig. 3, the outer wall of the hollow cylinder 10 is welded with four ear pieces 14, and the number of the ear pieces 14 is four for fixing the device.

As shown in fig. 2, sealing rings 15 are respectively sleeved on the ports at the two ends of the hollow cylinder 10, fixing screws 16 are respectively arranged on the outer walls of the left sealing cover 11 and the right sealing cover 12, the cylinder 10 is connected with the left sealing cover 11 and the right sealing cover 12 through the fixing screws 16, and the sealing rings 15 increase the sealing performance of the device after installation.

As shown in fig. 3, the inner wall of the left side cover 11 is provided with the rigid foam pad cover 17, and the control box 24 and the clamping plate a22 are both located inside the left side cover 11, so that the protection of the PCB board and the cooler in the control box 24 is achieved, and the damage of the PCB board and the cooler caused by the impact force generated by the vibration of the mechanical arm during operation is avoided.

As shown in fig. 3 and 4, the main body 2 includes a coil type condenser tube 20, a metal tube 21 with threads on the outer wall of the two ends and a control box 24, a cooler arranged inside the control box 24, an output end and an input end of the cooler are respectively communicated with an output end and an input end of the coil type condenser tube 20, the metal tube 21 is located inside the coil type condenser tube 20 and cools down hydraulic oil passing through the metal tube 21, the main body 2 is located inside the heat preservation shell 1, and the two ends of the metal tube 21 respectively penetrate through and extend out of the outer sides of the left side sealing cover 11 and the right side sealing cover 12.

As shown in fig. 3, the outer wall of the metal tube 21 is symmetrically sleeved with a clamping plate a22 and a clamping plate B23, the coiled condensation tube 20 is located between the clamping plate a22 and the clamping plate B23, and the control box 24 is fixedly mounted on the outer wall of the other side of the clamping plate a 22.

As shown in fig. 2, the outer wall of one side of the clamping plate B23 is provided with a clamping table 25, and the clamping plate B23 is clamped in the port of the cylinder 10 through the clamping table 25.

In some embodiments, as can be seen from fig. 3, the metal tube 21 is embodied as a copper or aluminum tube with a good thermal conductivity.

It should be noted that the control box 24 is internally provided with a PCB board, and the PCB board is provided with a reference resistor, the resistance of which is kept within a predetermined range relative to the cooler, and the main control box 24 can be directly connected with a battery on the excavator.

Normally, when installing the utility model provides a device, only need open the oil pipeline of pneumatic cylinder lower extreme, then install metal pipe 20's both ends respectively on oil pipe, use external plastic sealing cover pass through the mode of screw thread installation to oil pipe fixed can, it is convenient to install, increases the suitability of device to the marketing power and the competitiveness of device have been increased.

The device is in working waiting: the cooler in the control box 24 is started, and under the operation of the cooler, the temperature of the coil type condensation pipe 20 is reduced, the temperature of the space in the heat preservation shell 1 is rapidly reduced, and the temperature of the metal pipe 20 is also rapidly reduced because the metal pipe 20 is made of a material with extremely high thermal conductivity, so that the temperature of the metal pipe 20 is rapidly reduced, when hydraulic oil passes through the metal pipe 20, the hydraulic oil is rapidly cooled, and when the hydraulic oil enters the hydraulic cylinder, the purpose of further cooling the hydraulic cylinder can be achieved.

It will be appreciated by those skilled in the art that other similar connecting means, such as welding, bonding or screwing, may also be used to implement the present invention.

The above embodiments are merely exemplary embodiments of the present invention, which is not intended to limit the present invention, and the scope of the present invention is defined by the appended claims. Various modifications and equivalents may be made by those skilled in the art to the present invention without departing from the spirit and scope of the invention, and such modifications and equivalents should be considered to be within the scope of the invention.

Claims

1. A long-term cooling device of hydraulic cylinder, characterized by includes:

the heat insulation device comprises a heat insulation shell (1), wherein the heat insulation shell (1) comprises a hollow cylinder (10) and a left side sealing cover (11) and a right side sealing cover (12) which are respectively and movably arranged at two ends of the cylinder (10), and an asbestos heat insulation layer (13) is arranged inside the cylinder (10);

a main part (2), main part (2) include a coil pipe type condenser pipe (20), both ends outer wall establishes screwed tubular metal resonator (21) and control box (24), the inside cooler that sets up of control box (24), and the output and the input of cooler are respectively the output and the input of coil pipe type condenser pipe (20) are linked together, tubular metal resonator (21) are located the inboard of coil pipe type condenser pipe (20), and to passing through hydraulic oil in tubular metal resonator (21) cools down, main part (2) are located the inside of lagging casing (1), just the both ends of tubular metal resonator (21) run through respectively and extend left side closing cap (11) with the outside of right side closing cap (12).

2. The long-term cooling device of a hydraulic cylinder according to claim 1, characterized in that the outer wall of the hollow cylinder (10) is welded with lugs (14), and the number of the lugs (14) is four.

3. The long-acting cooling device for the hydraulic oil cylinder is characterized in that sealing rings (15) are sleeved on the ports of the two ends of the hollow cylinder (10).

4. A long-lasting cooling arrangement according to claim 1, characterised in that the inner wall of the left side cover (11) is provided with a rigid foam pad cover (17).

5. The long-acting cooling device for the hydraulic oil cylinder is characterized in that the outer walls of the left side cover (11) and the right side cover (12) are respectively provided with a fixing screw (16), and the cylinder (10) is connected with the left side cover (11) and the right side cover (12) through the fixing screws (16).

6. The long-acting cooling device for the hydraulic oil cylinder is characterized in that a clamping plate A (22) and a clamping plate B (23) are symmetrically sleeved on the outer wall of the metal pipe (21), the coil type condensation pipe (20) is located between the clamping plate A (22) and the clamping plate B (23), and the control box (24) is fixedly installed on the outer wall of the other side of the clamping plate A (22).

7. The long-acting cooling device for the hydraulic oil cylinder is characterized in that the outer wall of one side of the clamping plate B (23) is provided with a clamping table (25), and the clamping plate B (23) is clamped in the port of the cylinder (10) through the clamping table (25).

8. A long-term cooling arrangement of hydraulic cylinder according to claim 6, characterized in that the control box (24) and the snap plate A (22) are both located inside the left side cover (11).

9. A long-lasting cooling device according to claim 1, characterised in that said metal tube (21) is embodied as a copper or aluminium tube with a good thermal conductivity.

10. A long-lasting cooling device for a hydraulic cylinder according to claim 1, characterized in that a PCB board is provided inside the control box (24), and a reference resistor having a resistance value kept within a predetermined range with respect to the cooler is provided on the PCB board.