CN111608998B - Hydraulic control system of loader-digger for coal mine - Google Patents

Hydraulic control system of loader-digger for coal mine Download PDF

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Publication number
CN111608998B
CN111608998B CN202010398967.5A CN202010398967A CN111608998B CN 111608998 B CN111608998 B CN 111608998B CN 202010398967 A CN202010398967 A CN 202010398967A CN 111608998 B CN111608998 B CN 111608998B
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pipe
oil
fixedly connected
communicated
hydraulic
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CN111608998A (en
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高方瑜
刘俊波
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Hubei Rui Kun Machinery Manufacturing Co ltd
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Hubei Rui Kun Machinery Manufacturing Co ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2004—Control mechanisms, e.g. control levers
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2264—Arrangements or adaptations of elements for hydraulic drives
    • E02F9/2267—Valves or distributors
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/22—Hydraulic or pneumatic drives
    • E02F9/2278—Hydraulic circuits
    • E02F9/2292—Systems with two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/001—Servomotor systems with fluidic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/08—Servomotor systems incorporating electrically operated control means
    • F15B21/087—Control strategy, e.g. with block diagram
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/205—Systems with pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/62—Cooling or heating means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention discloses a hydraulic control system of a loader-digger for coal mines, which comprises a control box and a hydraulic mechanism fixedly connected to one side of the top of the inner wall of the control box, wherein the top of one side of the inner wall of the control box is fixedly connected with a plate-type heat exchanger through a supporting plate, the bottom of one side of the inner wall of the control box is fixedly connected with a heat dissipation box through an installation plate, the bottom of the plate-type heat exchanger is communicated with an inverted T-shaped vertical pipe, two ends of the bottom of the inverted T-shaped vertical pipe are communicated with coiled pipes, and the bottom ends of the two coiled pipes sequentially penetrate through the heat dissipation box and the installation plate and extend to the bottom of the installation plate. This hydraulic control system of loaderdigger for coal mine can realize adopting plate heat exchanger and circulating water cooling's mode to carry out abundant cooling to hydraulic oil when hydraulic system returns the oil, and cool off to the standard value that is set for in advance by temperature sensor or be less than the standard value after can carry to inside the oil tank and carry out follow-up use, if exceeded the standard value then need carry out water-cooling again.

Description

Hydraulic control system of loader-digger for coal mine
Technical Field
The invention relates to the technical field of coal mine operation, in particular to a hydraulic control system of a loader-digger for a coal mine.
Background
The backhoe loader is a single device consisting of three pieces of construction equipment, commonly called as 'busy at both ends', during construction, an operator only needs to rotate a seat to change a working end, the main work of the backhoe loader is to dig a ditch so as to arrange pipelines and underground cables, so as to lay a foundation for a building and establish a drainage system, the main reasons of the backhoe loader on all construction sites are that various projects need to dig and carry earth, and other tools can complete the work, but the backhoe loader can greatly improve the efficiency, compared with large-scale single-function equipment (such as a crawler excavator), the backhoe loader has compact size, and can move around various construction sites and even run on roads, although some small-sized loaders and digger equipment can be smaller than the backhoe loader, however, the use of the backhoe loader saves a lot of time and money if the contractor wants to perform both the digging and loading work.
The working mechanisms on the loader digger provide power through a hydraulic system, a hydraulic pump inputs hydraulic oil to the hydraulic system at constant pressure, and the hydraulic system is frequently used for a long time, so that the hydraulic oil in the hydraulic system is easily heated too fast, the hydraulic system cannot be sufficiently cooled during oil return, the normal use of the hydraulic oil and the hydraulic system is affected by high oil temperature, the service life of the hydraulic system is shortened, and the loader digger cannot normally work.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a hydraulic control system of a loader-digger for coal mines, which solves the problems that the temperature of hydraulic oil in a hydraulic system is easily increased too fast, the hydraulic system cannot be sufficiently cooled during oil return, and the hydraulic oil and the hydraulic system are influenced by high oil temperature along with the long-time frequent use of the hydraulic system.
Technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a hydraulic control system of a loader-digger for coal mines comprises a control box and a hydraulic mechanism fixedly connected to one side of the top of the inner wall of the control box, wherein the top of one side of the inner wall of the control box is fixedly connected with a plate-type heat exchanger through a supporting plate, the bottom of one side of the inner wall of the control box is fixedly connected with a heat dissipation box through a mounting plate, the bottom of the plate-type heat exchanger is communicated with an inverted T-shaped vertical pipe, two ends of the bottom of the inverted T-shaped vertical pipe are communicated with coiled pipes, the bottom ends of the two coiled pipes sequentially penetrate through the heat dissipation box and the mounting plate and extend to the bottom of the mounting plate, two sides between the top and the bottom of the inner wall of the heat dissipation box are fixedly connected with partition plates, one side of each partition plate opposite to the other is opposite to a cavity formed by the inner wall of the heat dissipation box, the bottom of one side of each partition plate opposite to the other is communicated with a transverse pipe, a one-way valve is fixedly connected to one side of each partition plate opposite to a refrigerator, two through diaphragm fixedly connected with circulating pump between the top of the relative one side of baffle, the water inlet intercommunication of circulating pump has the drinking-water pipe, the delivery port intercommunication of circulating pump has the outlet pipe, two just be located the top fixedly connected with shunt tubes of circulating pump, two between the relative one side of baffle the equal fixedly connected with weeping valve in inside of coiled pipe, two just be located the bottom intercommunication of mounting panel between the coiled pipe has the connecting pipe, and connecting pipe inner wall top fixedly connected with temperature sensor, the connecting pipe intercommunication has the pipe, connecting block fixedly connected with oil pump is passed through to the bottom of control box inner wall, the one end of pipe is linked together with the oil inlet of oil pump, the oil-out intercommunication of oil pump has the oil drain pipe, the equal fixedly connected with radiating fin in both sides of radiating box.
Preferably, the bottom of drinking-water pipe runs through the diaphragm and extends to the bottom of diaphragm, the outlet pipe is linked together with the shunt tubes.
Preferably, the top of control box inner wall opposite side is through connecting block fixedly connected with oil tank, the oil extraction pipe communicates respectively first defeated oil pipe and second defeated oil pipe, the one end of first defeated oil pipe communicates with the bottom of oil tank, the other end of second defeated oil pipe is linked together with type of falling T standpipe, the inside of first defeated oil pipe and second defeated oil pipe is fixedly connected with first solenoid valve and second solenoid valve respectively.
Preferably, the top of the inner wall of the control box and one side of the hydraulic mechanism are fixedly connected with a hydraulic pump through a connecting block, an oil inlet of the hydraulic pump is communicated with an oil pumping pipe, and one end of the oil pumping pipe is communicated with the top of one side of the oil tank.
Preferably, an oil outlet of the hydraulic pump is communicated with an oil outlet pipe, and one end of the oil outlet pipe is communicated with one side of the hydraulic mechanism.
Preferably, one side of the bottom of the hydraulic mechanism is communicated with an oil return pipe, and the oil return pipe is communicated with the top of one side of the plate heat exchanger.
Preferably, the output end of the temperature sensor is electrically connected with the input end of the data comparison module through a wire, the data comparison module is wirelessly connected with the central processing system in a two-way mode, and the output end of the central processing system is electrically connected with the input ends of the one-way valve, the refrigerator, the first electromagnetic valve, the second electromagnetic valve, the liquid leakage valve, the circulating pump, the oil pump and the hydraulic pump through wires respectively.
Preferably, the input end of the temperature sensor is electrically connected with the output end of the power module through a wire, and the output end of the power module is electrically connected with the input end of the central processing system through a wire.
(III) advantageous effects
The invention provides a hydraulic control system of a loader-digger for coal mines. The method has the following beneficial effects:
(1) the hydraulic control system of the loader-digger for coal mines is characterized in that the top of one side of the inner wall of a control box is fixedly connected with a plate heat exchanger through a supporting plate, the bottom of one side of the inner wall of the control box is fixedly connected with a heat radiation box through a mounting plate, the bottom of the plate heat exchanger is communicated with an inverted T-shaped vertical pipe, two ends of the bottom of the inverted T-shaped vertical pipe are communicated with coiled pipes, the bottom ends of the two coiled pipes sequentially penetrate through the heat radiation box and the mounting plate and extend to the bottom of the mounting plate, two sides between the top and the bottom of the inner wall of the heat radiation box are fixedly connected with clapboards, one side of each clapboard opposite to the other is communicated with a cavity formed by the inner wall of the heat radiation box, the bottom of one side opposite to the two clapboards is communicated with a transverse pipe, a check valve is fixedly connected to the inside of the transverse pipe, one side opposite to the clapboards is fixedly connected with a refrigerator, and a circulating pump is fixedly connected between the top of one side opposite to the two clapboards through a transverse plate, a water inlet of the circulating pump is communicated with a water pumping pipe, a water outlet of the circulating pump is communicated with a water outlet pipe, a shunt pipe is fixedly connected between one opposite sides of the two partition plates and positioned at the top of the circulating pump, liquid leakage valves are fixedly connected inside the two coiled pipes, a connecting pipe is communicated between the two coiled pipes and positioned at the bottom of the mounting plate, a temperature sensor is fixedly connected at the top of the inner wall of the connecting pipe, the connecting pipe is communicated with a guide pipe, an oil pump is fixedly connected at the bottom of the inner wall of the control box through a connecting block, one end of the guide pipe is communicated with an oil inlet of the oil pump, an oil outlet of the oil pump is communicated with an oil discharge pipe, radiating fins are fixedly connected at two sides of the radiating box, the bottom end of the water pumping pipe penetrates through a transverse plate and extends to the bottom of the transverse plate, the water outlet pipe is communicated with the shunt pipe, an oil tank is fixedly connected at the top of the other side of the inner wall of the control box through a connecting block, and the oil discharge pipe is respectively communicated with a first oil delivery pipe and a second oil delivery pipe, one end of the first oil delivery pipe is communicated with the bottom of the oil tank, the other end of the second oil delivery pipe is communicated with the inverted T-shaped vertical pipe, the first electromagnetic valve and the second electromagnetic valve are respectively and fixedly connected with the inside of the first oil delivery pipe and the second oil delivery pipe, the hydraulic pump is fixedly connected with the top of the inner wall of the control box and one side of the hydraulic mechanism through a connecting block, an oil pumping pipe is communicated with an oil inlet of the hydraulic pump, one end of the oil pumping pipe is communicated with the top of one side of the oil tank, the hydraulic oil can be fully cooled when the hydraulic system returns oil by adopting a plate heat exchanger and a circulating water cooling mode, and the cooling is to the standard value preset by the temperature sensor or can be conveyed to the inside of the oil tank for subsequent use after being lower than the standard value, if the standard value is exceeded, water cooling needs to be carried out again, and automatic control is realized, so that the control precision of the cooling temperature is high, and the normal use of the loader-digger is facilitated.
(2) This hydraulic control system of loaderdigger for coal mine, both ends through type of falling T standpipe bottom all communicate there is the coiled pipe, the bottom of two coiled pipes runs through heat dissipation case and mounting panel in proper order and extends to the bottom of mounting panel, the equal fixedly connected with baffle in both sides between heat dissipation incasement wall top and the bottom, two baffles are back-to-back from the cavity that one side and heat dissipation incasement wall formed, the setting up of coiled pipe has increased the heat radiating area of hydraulic oil in the pipe, do benefit to the quick heat dissipation of hydraulic oil, the inside circulation flow of cavity that one side that two baffles deviate from mutually and heat dissipation incasement wall formed has the cooling water simultaneously.
(3) This hydraulic control system of loader-digger for coal mine, the output through temperature sensor passes through the input electric connection of wire and data comparison module, and data comparison module realizes two-way connection through wireless and central processing system, central processing system's output is respectively through wire and check valve, the refrigerator, first solenoid valve, the second solenoid valve, the weeping valve, the circulating pump, the input electric connection of oil pump and hydraulic pump, temperature sensor's input passes through wire and power module's output electric connection, and power module's output passes through wire and central processing system's input electric connection, can realize carrying out the automation to whole hydraulic control system and control, need not personnel to operate, convenient and fast.
Drawings
FIG. 1 is a cross-sectional view of a structure of the present invention;
FIG. 2 is a cross-sectional view of the heat sink box structure of the present invention;
FIG. 3 is a cross-sectional view of a connector structure of the present invention;
FIG. 4 is an enlarged view of a portion of the invention at A in FIG. 1;
fig. 5 is a schematic block diagram of the architecture of the system of the present invention.
In the figure: 1-hydraulic mechanism, 2-hydraulic mechanism, 3-plate heat exchanger, 4-mounting plate, 5-radiating box, 6-inverted T-shaped vertical pipe, 7-coiled pipe, 8-partition plate, 9-water outlet pipe, 10-refrigerator, 11-one-way valve, 12-transverse plate, 13-circulating pump, 14-water pumping pipe, 15-shunt pipe, 16-liquid leakage valve, 17-connecting pipe, 18-temperature sensor, 19-guide pipe, 20-oil pump, 21-oil discharge pipe, 22-radiating fin, 23-oil tank, 24-first oil delivery pipe, 25-second oil delivery pipe, 26-first electromagnetic valve, 27-second electromagnetic valve, 28-hydraulic pump, 29-oil pumping pipe, 30-oil outlet pipe, 31-oil return pipe, oil return pipe, 32-data comparison module, 33-central processing system, 34-power supply module and 35-transverse tube.
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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, an embodiment of the present invention provides a technical solution: a hydraulic control system of a loader-digger for coal mines can realize the full cooling of hydraulic oil in the oil return process of a hydraulic system by adopting a plate-type heat exchanger 3 and a circulating water cooling mode, and the hydraulic oil can be conveyed into an oil tank 23 for subsequent use after being cooled to a standard value preset by a temperature sensor 18 or being lower than the standard value, if the standard value is exceeded, the hydraulic control system needs to be cooled again, automatic control is realized, so that the control precision of the cooling temperature is high, and the normal use of the loader-digger is facilitated, the hydraulic control system comprises a control box 1 and a hydraulic mechanism 2 fixedly connected to one side of the top of the inner wall of the control box 1, one side of the bottom of the hydraulic mechanism 2 is communicated with an oil return pipe 31, the oil return pipe 31 is communicated with the top of one side of the plate-type heat exchanger 3, the output end of the temperature sensor 18 is electrically connected with the input end of a data comparison module 32 through a lead, and the data comparison module 32 is in two-way connection with a central processing system 33 through a wireless mode, the model number of the humidity sensor 18 is JCJ175A, the input end of the temperature sensor 18 is electrically connected with the output end of the power module 34 through a lead, and the output end of the power module 34 is electrically connected with the input end of the central processing system 33 through a lead, so that the whole hydraulic control system can be automatically controlled without being operated by personnel, the operation is convenient and fast, the output end of the central processing system 33 is respectively electrically connected with the check valve 11, the refrigerator 10, the first electromagnetic valve 26, the second electromagnetic valve 27, the leakage valve 16, the circulating pump 13, the oil pump 20 and the input end of the hydraulic pump 28 through leads, the hydraulic pump 28 is fixedly connected with the top of the inner wall of the control box 1 and positioned at one side of the hydraulic mechanism 2 through a connecting block, the oil inlet of the hydraulic pump 28 is communicated with an oil pumping pipe 29, the oil outlet of the hydraulic pump 28 is communicated with an oil outlet pipe 30, one end of the oil outlet pipe 30 is communicated with one side of the hydraulic mechanism 2, one end of an oil pumping pipe 29 is communicated with the top of one side of an oil tank 23, the top of the other side of the inner wall of a control box 1 is fixedly connected with the oil tank 23 through a connecting block, an oil discharge pipe 21 is respectively communicated with a first oil delivery pipe 24 and a second oil delivery pipe 25, one end of the first oil delivery pipe 24 is communicated with the bottom of the oil tank 23, the other end of the second oil delivery pipe 25 is communicated with an inverted T-shaped vertical pipe 6, the interiors of the first oil delivery pipe 24 and the second oil delivery pipe 25 are respectively and fixedly connected with a first electromagnetic valve 26 and a second electromagnetic valve 27, the top of one side of the inner wall of the control box 1 is fixedly connected with a plate heat exchanger 3 through a supporting plate, the bottom of one side of the inner wall of the control box 1 is fixedly connected with a heat dissipation box 5 through a mounting plate 4, the bottom of the plate heat exchanger 3 is communicated with the inverted T-shaped vertical pipe 6, two ends of the bottom of the inverted T-shaped vertical pipe 6 are both communicated with a coil pipe 7, and the arrangement of the coil 7 increases the heat dissipation area of hydraulic oil in the pipes, do benefit to the quick heat dissipation of hydraulic oil, the cavity that the one side that two baffles 8 deviate from each other and the inner wall of heat dissipation case 5 form is inside to circulate and flow to have cooling water, the bottom of two coiled pipes 7 runs through heat dissipation case 5 and mounting panel 4 in proper order and extends to the bottom of mounting panel 4, both sides between the top and the bottom of the inner wall of heat dissipation case 5 are fixedly connected with baffles 8, two baffles 8 are opposite from the cavity that one side and the inner wall of heat dissipation case 5 form, the bottom of the opposite side of two baffles 8 is all communicated with horizontal pipe 35, and the inside of horizontal pipe 35 is fixedly connected with check valve 11, the opposite side of baffle 8 is fixedly connected with refrigerator 10, refrigerator 10 is located on one side of the baffle 8 on the left side, the top of the opposite side of two baffles 8 is fixedly connected with circulating pump 13 through diaphragm 12, the water inlet of circulating pump 13 is communicated with pumping pipe 14, the bottom of pumping pipe 14 runs through diaphragm 12 and extends to the bottom of diaphragm 12, outlet pipe 9 is linked together with shunt tubes 15, the delivery port intercommunication of circulating pump 13 has outlet pipe 9, the top fixedly connected with shunt tubes 15 that just is located circulating pump 13 between the relative one side of two baffles 8, the equal fixedly connected with weeping valve 16 in inside of two coiled pipes 7, the bottom intercommunication that just is located mounting panel 4 between two coiled pipes 7 has connecting pipe 17, and connecting pipe 17 inner wall top fixedly connected with temperature sensor 18, connecting pipe 17 intercommunication has pipe 19, connecting block fixedly connected with oil pump 20 is passed through to the bottom of control box 1 inner wall, the one end of pipe 19 is linked together with the oil inlet of oil pump 20, the oil-out intercommunication of oil pump 20 has oil drain pipe 21, the equal fixedly connected with radiating fin 22 in both sides of radiating box 5.
When the device is used, the standard temperature value of hydraulic oil needing to be input is judged in advance, the temperature value higher than the standard is a high-temperature alarm threshold value, then the high-temperature alarm threshold value is input into a data comparison module 32 to serve as comparison data, the hydraulic pump 28 conveys the hydraulic oil in the oil tank 23 into the hydraulic mechanism 2 through the oil outlet pipe 30, the hydraulic mechanism 2 conveys the discharged high-temperature hydraulic oil into the plate heat exchanger 3 through the oil return pipe 31, after the high-temperature hydraulic oil dissipates most of heat in the plate heat exchanger 3, the hydraulic oil containing heat enters the two serpentine pipes 7 through the inverted T-shaped vertical pipe 6, at the moment, the circulating pump 13 is started, the circulating pump 13 pumps cooling water refrigerated at the bottom of the transverse plate 12 by the refrigerator 10 into the shunt pipe 15 through the water suction pipe 14 and the water outlet pipe 9, and conveys the cooling water to the cavity formed by the side, opposite to the inner wall of the heat dissipation tank 5, of the two partition plates 8 through the shunt pipe 15, the cooling water carries out water-cooled heat dissipation on the hydraulic oil in the coiled pipe 7 in the cavity, the water absorbing heat enters the cavity between the opposite sides of the two partition plates 8 through the transverse pipe 35 and the one-way valve 11 and then is refrigerated by the refrigerator 10 to form a water-cooled circulation, the hydraulic oil after heat dissipation flows into the connecting pipe 17, at this time, the temperature sensor 18 in the connecting pipe 17 detects the temperature of the hydraulic oil flowing through the connecting pipe 17, then the detected value is transmitted to the data comparison module 32, the detected temperature value is compared with the high-temperature alarm threshold value in the data comparison module 32, the data comparison module 32 feeds the high-temperature alarm threshold value back to the central processing system 33, if the temperature of the hydraulic oil after heat dissipation is higher than the high-temperature alarm threshold value, at this time, the central processing system 33 controls the oil pump 20 and the second electromagnetic valve 27 to be opened, oil pump 20 is carried hydraulic oil to inside defeated oil pipe 25 of second through pipe 19 and oil extraction pipe 21, carry to the inside circulative cooling that carries on again of type of falling T standpipe 6 by second defeated oil pipe 25 again, if equal to or when being less than the standard temperature value of settlement, then open first solenoid valve 26, oil pump 20 carries hydraulic oil to inside first defeated oil pipe 24 through pipe 19 and oil extraction pipe 21, again by first defeated oil pipe 24 carry hydraulic oil to oil tank 23 inside carry out subsequent use can, just so accomplished whole work.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (1)

1. The utility model provides a hydraulic pressure control system of loaderdigger for coal mine, includes control box (1) and fixed connection in hydraulic pressure mechanism (2) of control box (1) inner wall top one side, its characterized in that: the top of one side of the inner wall of the control box (1) is fixedly connected with a plate type heat exchanger (3) through a supporting plate, the bottom of one side of the inner wall of the control box (1) is fixedly connected with a heat radiation box (5) through a mounting plate (4), the bottom of the plate type heat exchanger (3) is communicated with an inverted T-shaped vertical pipe (6), two ends of the bottom of the inverted T-shaped vertical pipe (6) are communicated with coiled pipes (7), the bottom ends of the two coiled pipes (7) sequentially penetrate through the heat radiation box (5) and the mounting plate (4) and extend to the bottom of the mounting plate (4), two sides between the top and the bottom of the inner wall of the control box (1) are fixedly connected with partition plates (8), the two partition plates (8) are mutually separated from a cavity formed by one side and the inner wall of the heat radiation box (5), the bottom of one side opposite to the partition plates (8) is communicated with a transverse pipe (35), and the inner part of the transverse pipe (35) is fixedly connected with a one-way valve (11), the utility model discloses a refrigerator, including baffle (8), relative one side fixedly connected with refrigerator (10), two through diaphragm (12) fixedly connected with circulating pump (13) between the top of the relative one side of baffle (8), the water inlet intercommunication of circulating pump (13) has drinking-water pipe (14), the delivery port intercommunication of circulating pump (13) has outlet pipe (9), two just be located the top fixedly connected with shunt tubes (15) of circulating pump (13) between the relative one side of baffle (8), two the equal fixedly connected with weeping valve (16) in inside of coiled pipe (7), two just the bottom intercommunication that is located mounting panel (4) between coiled pipe (7) has connecting pipe (17), and connecting pipe (17) inner wall top fixedly connected with temperature sensor (18), connecting pipe (17) intercommunication has pipe (19), the bottom of control box (1) inner wall is through connecting block fixedly connected with oil pump (20), one end of the conduit (19) is communicated with an oil inlet of an oil pump (20), an oil outlet of the oil pump (20) is communicated with an oil discharge pipe (21), and two sides of the heat dissipation box (5) are fixedly connected with heat dissipation fins (22);
the bottom end of the water pumping pipe (14) penetrates through the transverse plate (12) and extends to the bottom of the transverse plate (12), the water outlet pipe (9) is communicated with the flow dividing pipe (15), the top of the other side of the inner wall of the control box (1) is fixedly connected with an oil tank (23) through a connecting block, the oil discharge pipe (21) is respectively communicated with a first oil delivery pipe (24) and a second oil delivery pipe (25), one end of the first oil delivery pipe (24) is communicated with the bottom of the oil tank (23), the other end of the second oil delivery pipe (25) is communicated with the inverted T-shaped vertical pipe (6), and the interiors of the first oil delivery pipe (24) and the second oil delivery pipe (25) are respectively and fixedly connected with a first electromagnetic valve (26) and a second electromagnetic valve (27);
the output end of the temperature sensor (18) is electrically connected with the input end of the data comparison module (32) through a lead, the data comparison module (32) is in bidirectional connection with the central processing system (33) in a wireless mode, the output end of the central processing system (33) is electrically connected with the input ends of the one-way valve (11), the refrigerator (10), the first electromagnetic valve (26), the second electromagnetic valve (27), the leakage valve (16), the circulating pump (13), the oil pump (20) and the hydraulic pump (28) through leads respectively, the input end of the temperature sensor (18) is electrically connected with the output end of the power module (34) through a lead, and the output end of the power module (34) is electrically connected with the input end of the central processing system (33) through a lead;
the utility model discloses a hydraulic mechanism, including control box (1), oil pump (28), oil tank (23), oil outlet intercommunication of hydraulic pump (28), the top of control box (1) inner wall and the one side that is located hydraulic pressure mechanism (2) are passed through connecting block fixedly connected with hydraulic pump (28), and the oil inlet intercommunication of hydraulic pump (28) has oil extraction pipe (29), the one end of oil extraction pipe (29) is linked together with one side of hydraulic pressure mechanism (2), one side intercommunication of hydraulic pressure mechanism (2) bottom has oil return pipe (31), oil return pipe (31) are linked together with the top of plate heat exchanger (3) one side.
CN202010398967.5A 2020-05-12 2020-05-12 Hydraulic control system of loader-digger for coal mine Active CN111608998B (en)

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CN110701147A (en) * 2019-10-09 2020-01-17 建湖县八达液压机械有限公司 Heat dissipation assembly for hydraulic pump station
CN211924641U (en) * 2020-03-12 2020-11-13 安徽涌诚机械有限公司 Hydraulic oil cooling device for hydraulic unit of large-scale precision die casting machine

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DE3702904A1 (en) * 1987-01-31 1988-08-11 Wagner Paul Heinz Hydraulic supply unit
DE102011083874A1 (en) * 2011-09-30 2013-04-04 Putzmeister Engineering Gmbh Hydraulic system with suction return filter
KR20140109388A (en) * 2011-12-23 2014-09-15 볼보 컨스트럭션 이큅먼트 에이비 Hydraulic fan drive control system for construction machinery
CN103233947A (en) * 2012-01-08 2013-08-07 钱荣华 Method for cooling hydraulic oil of underground coal mine loader digger and other equipment
CN202730832U (en) * 2012-07-16 2013-02-13 淮南市众兴机械制造有限责任公司 Dual-cooling device of hydraulic system of backhoe loader
CN103806497A (en) * 2014-02-14 2014-05-21 上海三一重机有限公司 Oil return system allowing oil temperature to be regulated automatically and excavator
CN105351287A (en) * 2015-12-04 2016-02-24 四川海搏液压机械有限公司 Cooling mechanism for cooling hydraulic oil
CN205841377U (en) * 2016-07-07 2016-12-28 穆玮 A kind of oil pressure plant equipment oil temperature chiller
CN108978766A (en) * 2018-06-28 2018-12-11 柳州柳工挖掘机有限公司 Hydraulic crawler excavator cooling system arragement construction
CN110701147A (en) * 2019-10-09 2020-01-17 建湖县八达液压机械有限公司 Heat dissipation assembly for hydraulic pump station
CN211924641U (en) * 2020-03-12 2020-11-13 安徽涌诚机械有限公司 Hydraulic oil cooling device for hydraulic unit of large-scale precision die casting machine

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