CN104483070B - Tractor gearbox body oil hole leak detection valve block assembly and application method - Google Patents

Tractor gearbox body oil hole leak detection valve block assembly and application method Download PDF

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Publication number
CN104483070B
CN104483070B CN201410763124.5A CN201410763124A CN104483070B CN 104483070 B CN104483070 B CN 104483070B CN 201410763124 A CN201410763124 A CN 201410763124A CN 104483070 B CN104483070 B CN 104483070B
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China
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hole
valve
reversal valve
control line
valve block
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CN104483070A (en
Inventor
葛便京
蔡安克
王建明
易良均
郭丹丹
王明海
段华荣
张岑
黄娟
王治军
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First Tractor Co Ltd
China Yituo Group Corp Ltd
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First Tractor Co Ltd
China Yituo Group Corp Ltd
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Abstract

A kind of tractor gearbox body oil hole leak detection valve block assembly and application method, belong to mechanical manufacturing field, including combination valve block component, valve block control line, junction box and master control line, one end of the combination valve block component is by detecting that air pipe is connected with gearbox body, the other end of the combination valve block component is connected by one end of valve block control line and junction box, and the other end of the junction box is connected by master control line with leakage tester;The present invention combines multiple reversal valves, and each reversal valve controls the detection in hole all the way, and once handling can complete the leak detection of whole oil holes on tractor gearbox body;The tractor gearbox body of different cultivars can be detected, using flexibly quick detachable, can be connected from different blocking components and leakage detector.

Description

Tractor gearbox body oil hole leak detection valve block assembly and application method
Technical field
Used the invention belongs to mechanical manufacturing field, more particularly to a kind of tractor gearbox body oil hole leak detection that is used for Valve block assembly and application method.
Background technology
Gearbox is one of critical component of tractor, and back axle, pto, four-wheel drive, brake and Miscellaneous part constitutes power train, and its function is that the high rotating speed low torque for exporting Diesel engine is converted to drive axle and power is defeated The big torque of the slow-speed of revolution of shaft.Gear box of tractor is sent out from manual shift mechanical gear box, the synchronizing sleeve manual transmission at initial stage The dynamic power shift gear box to today is opened up, the shift quality of gearbox improves constantly, agricultural production operating mode complicated and changeable is fitted Answering property constantly strengthens.Dynamic power shift gear box is main by machine driven system, hydraulic control system and electronic control system three It is grouped into, tractor dynamic power shift gear box is to realize the machine that tractor is shifted gears under loads using hydraulic clutch or brake Include multichannel oil duct pore structure inside structure, dynamic power shift gear box body, in hydraulic work system, per the leakage rate of road oil hole The leakage standard of drawing technical requirements can not all be exceeded, the leakage rate of oil hole each other can not exceed drawing technical requirements Leakage standard.
Power shifting tractor carries out gear shift operation, gearbox body oil duct using the mobile clutch of pressure effect of hydraulic oil Hole be shift gears hydraulic oil passage, be the guarantee that tractor realizes power shifting, in order to ensure hydraulic system can normal work, Need to carry out leak detection before gearbox assembling, it is desirable to per leakage rate, the leakage rate of oil hole each other of road oil hole In allowed limits.
Known by Fig. 1, leak detecting device includes detection air pipe 2, reversal valve 3, loading line 4, master control line 5, leakage Tester 6 and air inlet pipeline 7.The principle of leak detection is:Leakage tester 6 controls the switch of reversal valve 3 by master control line 5 Inflated to the tested cavity of gearbox body 1, the cavity of gearbox body 1 passes through loading line 4 and leakage tester 6 during inflated condition Logical, if there is leakage, then pressure diminishes, the pressure sensor detection pressure change in leakage tester 6, judges tested speed change The cavity of casing 1 reveals situation.
The structure of current leak detecting device is design corresponding with the architectural feature for the specific component to be detected, category In the special purpose device for detecting a certain part amount of leakage to be measured of production in enormous quantities, every leak detecting device correspondence one Product is planted, the valve block assembly used is also the automatic plugging component for being suitable only for a kind of product, using presence in Tractor Products Problems with:
1st, not general, cost is high:Existing leak test valve block assembly is according to each product structure design detected, handling Can not be general between inconvenience, different product;And tractor gearbox body volume is big, complicated, wide in variety, production batch compared with Small, if each product configures special service valve block assembly, cost is too high;
2nd, the reversal valve and control circuit of existing valve block assembly are independently set, and installed, are debugged inconvenience.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide one kind can be used in the control of leakage detector and The combination valve block component of multigroup oil hole leakage situation is tested while connection, the present invention combines multiple reversal valves, Each reversal valve controls the detection in hole all the way, and once handling can complete the leakage inspection of whole oil holes on tractor gearbox body Survey;The tractor gearbox body of different cultivars can be detected, using flexibly it is quick detachable, can be from different blocking components and leakage Detector is connected.
In order to realize goal of the invention of the present invention, the present invention uses following technical scheme:
A kind of tractor gearbox body oil hole leak detection valve block assembly, including the control of combination valve block component, valve block Line, junction box and master control line, one end of the combination valve block component is by detecting that air pipe is connected with gearbox body, described group The other end for closing valve block component is connected by one end of valve block control line and junction box, and the other end of the junction box passes through master control Line processed is connected with leakage tester.
Described tractor gearbox body oil hole leak detection valve block assembly, the combination valve block component is set to length Cube structure, the combination valve block component include flow distribution plate, several reversal valves, breather plug, plug, reversal valve mounting screw, Body mounting screw, detection hole inlet suction port, inlet suction port;Reversal valve is fixedly installed on the front of flow distribution plate, and junction box is fixed It is arranged on the right side of flow distribution plate, detection hole inlet suction port is fixedly installed on the left of flow distribution plate, inlet suction port is connected on the upside of flow distribution plate Left part, plug is connected to flow distribution plate lower left side, and breather plug is arranged at both sides above and below the right part of flow distribution plate, one end of master control line With being connected on the downside of junction box, the other end of master control line is connected by control line plug with leakage tester, valve block control line One end on the upside of junction box with being connected, and the other end of valve block control line is connected with reversal valve.
Described tractor gearbox body oil hole leak detection valve block assembly, the other end of the valve block control line with The reversal valve valve block control line interface connection of reversal valve.
Described tractor gearbox body oil hole leak detection valve block assembly, the corner of the flow distribution plate is set respectively There is the fixing screws connecting hole being connected with external stability, air inlet pipeline, gas exhaust piping, air inlet pipe are internally provided with flow distribution plate Road and gas exhaust piping are through the length direction of whole flow distribution plate, and air inlet pipeline is parallel with gas exhaust piping, air inlet pipeline upper end Aperture is connected for air inlet, one end grafting of the air inlet connection aperture and inlet suction port, the other end of inlet suction port passes through connection Loading line and leakage tester UNICOM, the lower end of the air inlet pipeline is air inlet end aperture, air inlet end aperture with One end grafting of plug;The two ends of gas exhaust piping are respectively vent ports, and the vent ports are used to set breather plug;It is described enter Gas connection aperture, air inlet end aperture and vent ports are coniform hole;Detection is provided with the left of the flow distribution plate width Gas inlet hole connecting hole, the aperture of the detection gas inlet hole connecting hole is bellmouth, the detection gas inlet hole connecting hole and detection hole One end grafting of inlet suction port;The other end of detection hole inlet suction port is connected with detection air pipe;The flow distribution plate is positive along width Degree direction is provided with reversal valve air admission hole connecting hole, reversal valve working hole connecting hole, commutation valve outlet hole connecting hole, the commutation Valve air admission hole connecting hole, reversal valve working hole connecting hole, commutation valve outlet hole connecting hole are set point-blank, wherein commutating Valve air admission hole connecting hole is vertical with air inlet pipeline to be communicated, reversal valve working hole connecting hole phase vertical with detection gas inlet hole connecting hole Logical, commutating, valve outlet hole connecting hole is vertical with gas exhaust piping to be communicated;The flow distribution plate front is provided with two rows and changed along its length To valve tightening screwed hole, the reversal valve tightening screwed hole is not communicated with any hole.
Described tractor gearbox body oil hole leak detection valve block assembly, the reversal valve includes reversal valve valve block Control line interface, reversal valve air admission hole, reversal valve working hole, commutation valve outlet hole, reversal valve set screw hole, hand push button and Valve element;Reversal valve valve block controls line interface connection valve block control line, and reversal valve bottom is provided with reversal valve air admission hole, reversal valve work Make hole, commutation valve outlet hole, when being inflated to detection hole reversal valve air admission hole communicated with reversal valve air admission hole connecting hole, reversal valve work Make hole to communicate with reversal valve working hole connecting hole, commutation valve outlet hole is separated by valve element;Commutate valve outlet hole during detection hole exhaust Communicated with commutation valve outlet hole connecting hole, reversal valve working hole is communicated with reversal valve working hole connecting hole, reversal valve air admission hole quilt Valve element separates;Reversal valve bottom diagonal position is provided with reversal valve set screw hole, is connected, will change with reversal valve tightening screwed hole It is fixedly connected on to valve on flow distribution plate.
Described tractor gearbox body oil hole leak detection valve block assembly, commutation is passed through by reversal valve mounting screw Combination valve block component is arranged on leak-testing instrument frame by valve set screw hole and reversal valve tightening screwed hole, the body peace Combination valve block component is arranged on leak-testing instrument frame by cartridge screw by fixing screws connecting hole.
Described tractor gearbox body oil hole leak detection valve block assembly, the reversal valve is set to two-position three way Solenoid directional control valve.
Described tractor gearbox body oil hole leak detection valve block assembly, the junction box is set to cuboid knot In structure, including shell, internal wiring plate, external terminal board, outer layer binding post, interconnector and internal layer binding post, the shell of junction box Portion is provided with internal wiring plate and external terminal board, and the internal wiring plate side relative with master control line is provided with internal layer binding post, external The line plate side relative with valve block control line is provided with outer layer binding post, quantity and the outer layer binding post quantity phase of internal layer binding post Together, and by interconnector connect one to one;Master control line enters inside junction box, and control wire core is separated, with fixation In the internal layer binding post connection on internal wiring plate;External cabling post connects one to one with each bar valve block control line, the control of valve block Line stretches out from junction box upper end, and the quantity of valve block control line is consistent with the quantity of reversal valve.
Described tractor gearbox body oil hole leak detection valve block assembly, the master control line is set to two, One end of the master control line is by controlling on the internal layer binding post that wire core is connected in junction box, the other end of master control line Control line plug is fixedly installed, the control line plug is the RS232 serial communication interfaces of standard, with being controlled in leakage detector Unit connection processed.
The described tractor gearbox body oil hole leak detection application method of valve block assembly, is comprised the following steps that:
One)Combination valve block component is assembled, by the reversal valve air admission hole on each reversal valve, reversal valve working hole, reversal valve Steam vent is connected with every group of reversal valve air admission hole connecting hole on flow distribution plate, reversal valve working hole connecting hole, commutation valve outlet hole Hole is correspondingly arranged;By reversal valve set screw hole and reversal valve tightening screwed hole with reversal valve mounting screw on flow distribution plate it is solid Reversal valve is set surely;
One end of detection hole inlet suction port is screwed in into detection gas inlet hole connecting hole;One end of inlet suction port is screwed in into air inlet to connect Connect aperture;One end of plug is screwed in into air inlet end aperture mouthful, air inlet pipeline gas leakage is prevented;Breather plug is set in vent ports;
Two)Junction box is assembled, master control line enters inside junction box, control wire core is separated, with being fixed on internal wiring plate On internal layer binding post connection;External cabling post connects one to one with each bar valve block control line, and valve block control line is from junction box Upper end is stretched out;
Three)Combination valve block component and junction box are connected, junction box is fixed with screw by junction box attachment screw hole and set Put on combination valve block component, will be connected on the upside of one end of valve block control line and junction box, by the other end of valve block control line and The reversal valve valve block control line interface connection of reversal valve;
Four)Valve block assembly is connected with leakage tester, one end of master control line on the downside of junction box with being connected, master control line The other end be connected by control line plug with leakage tester;By one end of loading line and inlet suction port grafting, gas tube The other end on road and leakage tester UNICOM;
Five)Valve block assembly is connected with gearbox body, by detecting air pipe connecting detection gas inlet hole joint and closure group Part and gearbox body;
Six)Tested gearbox body is blocked;
Seven)Press and start detection button on leakage tester, detected;
Eight)Whether recording detection data, leakage test instrument automatic discrimination is qualified;
Nine)The leak detection of next gearbox body is carried out, six are repeated the above steps)~ eight).
Due to using techniques discussed above scheme, the present invention can reach following beneficial effect:
1st, tractor gearbox body oil hole leak detection valve block assembly of the present invention, multiple reversal valves are combined Together, each reversal valve controls the detection in hole all the way, and once handling can complete whole oil holes on tractor gearbox body Leak detection, it is efficient and convenient;
2nd, tractor gearbox body oil hole leak detection valve block assembly of the present invention, can be from different closure Component and leakage detector are attached, and detect the tractor gearbox body of different cultivars;With same blocking component and letting out When leak detection instrument is attached, if the plugging structure of detected tractor gearbox body is identical, different product can also be detected The tractor gearbox body planted, highly versatile effectively reduces the cost using valve block assembly, so as to reduce leak detection Cost;
3rd, tractor gearbox body oil hole leak detection valve block assembly of the present invention, by reversal valve and control line Road is arranged respectively to integrative-structure, using common pipeline and blocking component and the quick grafting of leakage detector, using flexibly easy Dismounting, can be connected, installation and debugging are convenient from different blocking components and leakage detector.
Brief description of the drawings
Fig. 1 is tractor gearbox body oil hole leak detection principle schematic;
Fig. 2 is operation principle schematic diagram of the invention;
Fig. 3 is dimensional structure diagram of the invention;
Fig. 4 is the structural representation of flow distribution plate;
Fig. 5 is the structural representation of reversal valve;
Reversal valve working state schematic representation when Fig. 6 is inflation;
Reversal valve working state schematic representation when Fig. 7 is exhaust;
Fig. 8 is the structural representation of distributor plate;
In figure:1st, gearbox body;1a, oil hole aperture;2nd, air pipe is detected;3rd, reversal valve;3a, the control of reversal valve valve block Line interface;3b, reversal valve air admission hole;3c, reversal valve working hole;3d, commutation valve outlet hole;3e, reversal valve set screw hole; 3f, hand push button;3g, valve element;4th, loading line;5th, master control line;5a, control line plug;5b, control wire terminal;6th, leak Tester;7th, air inlet pipeline;8th, valve block assembly;9th, combination valve block component;10th, valve block control line;11st, junction box;11a, shell; 11b, internal wiring plate;11c, external terminal board;11d, outer layer binding post;11e, interconnector;11f, internal layer binding post;12nd, divide Flow plate;12a, fixing screws connecting hole;12b, detection gas inlet hole connecting hole;12c, air inlet connection aperture;12d, air inlet end aperture Mouthful;12e, reversal valve tightening screwed hole;12f, reversal valve air admission hole connecting hole;12g, reversal valve working hole connecting hole;12h, change To valve outlet hole connecting hole;12i, vent ports;12j, junction box attachment screw hole;12k, air inlet pipeline;12l, gas exhaust piping; 13rd, breather plug;14th, plug;15th, reversal valve mounting screw;16th, body mounting screw;17th, detection hole inlet suction port;18th, enter Gas joint.
Embodiment
The present invention can be explained in more detail by the following examples, the invention is not limited in the following examples, The open purpose of the present invention is intended to protect all changes and improvements in the scope of the invention.
Known by Fig. 2, Fig. 3, a kind of tractor gearbox body oil hole leak detection valve block assembly 8, including combination valve block Component 9, valve block control line 10, junction box 11 and master control line 5, one end of the combination valve block component 9 is by detecting air pipe 2 It is connected with gearbox body 1, the other end of the combination valve block component 9 is connected by one end of valve block control line 10 and junction box 11 Connect, the other end of the junction box 11 is connected by master control line 5 with leakage tester 6.
Known by Fig. 3, the combination valve block component 9 is set to rectangular parallelepiped structure, for by towards each detected oil duct The air inlet pipeline separation in hole;The combination valve block component 9 include flow distribution plate 12, several reversal valves 3, breather plug 13, plug 14, Reversal valve mounting screw 15, body mounting screw 16, detection hole inlet suction port 17, inlet suction port 18;Reversal valve 3 is fixedly installed on The front of flow distribution plate 12, junction box 11 is fixedly installed on the right side of flow distribution plate 12, and detection hole inlet suction port 17 is fixedly installed on shunting The left side of plate 12, inlet suction port 18 is connected to the upside left part of flow distribution plate 12, and plug 14 is connected to the lower left side of flow distribution plate 12, breather plug 13 are arranged at both sides above and below the right part of flow distribution plate 12, and one end of master control line 5 is connected with the downside of junction box 11, master control line 5 The other end is connected by control line plug 5a with leakage tester 6, to carry out electrical control, valve block control to combination valve block component 9 One end of line 10 processed is connected with the upside of junction box 11, and the other end of valve block control line 10 is connected with reversal valve 3.
The other end of the valve block control line 10 is connected with the reversal valve valve block control line interface 3a of reversal valve 3.
Known by Fig. 4, the corner of described flow distribution plate 12 is respectively arranged with the fixing screws connection being connected with external stability Hole 12a, air inlet pipeline 12k, gas exhaust piping 12l are internally provided with flow distribution plate 12, and air inlet pipeline 12k is passed through with gas exhaust piping 12l Be through at the length direction of whole flow distribution plate 12, and air inlet pipeline 12k is parallel with gas exhaust piping 12l, air inlet pipeline 12k upper ends be into Gas connects aperture 12c, and the air inlet connection aperture 12c and inlet suction port 18 one end grafting, the other end of inlet suction port 18 lead to Connection loading line 4 and the UNICOM of leakage tester 6 are crossed, the lower end of the air inlet pipeline 12k is air inlet end aperture 12d, described Air inlet end aperture 12d and plug 14 one end grafting, prevent air inlet pipeline gas leakage;Gas exhaust piping 12l two ends are respectively row Gas opening 12i, the vent ports 12i are conducive to whole pipeline gas to discharge, and obstruct outside for setting breather plug 13 Dust enters pipeline blockage pipeline;The air inlet connection aperture 12c, air inlet end aperture 12d and vent ports 12i are tapered Hole;Detection gas inlet hole connecting hole 12b, the detection gas inlet hole connecting hole are provided with the left of the described width of flow distribution plate 12 12b aperture is bellmouth, the detection gas inlet hole connecting hole 12b and detection hole inlet suction port 17 one end grafting;Detection hole The other end of inlet suction port 17 is connected with detection air pipe 2, realizes and each detection hole is inflated;The flow distribution plate 12 is positive along width Degree direction is provided with reversal valve air admission hole connecting hole 12f, reversal valve working hole connecting hole 12g, commutation valve outlet hole connecting hole 12h, the reversal valve air admission hole connecting hole 12f, reversal valve working hole connecting hole 12g, commutation valve outlet hole connecting hole 12h are set Point-blank, wherein reversal valve air admission hole connecting hole 12f is vertical with air inlet pipeline 12k communicates, the connection of reversal valve working hole Hole 12g is communicated with detecting that gas inlet hole connecting hole 12b is vertical, commutation valve outlet hole connecting hole 12h phases vertical with gas exhaust piping 12l It is logical;The described front of flow distribution plate 12 is provided with two row reversal valve tightening screwed hole 12e, the reversal valve clamp screw along its length Pit 12e is not communicated with any hole.
From Fig. 5 combinations Fig. 6, Fig. 7, the reversal valve 3 includes reversal valve valve block control line interface 3a, reversal valve air inlet Hole 3b, reversal valve working hole 3c, commutation valve outlet hole 3d, reversal valve set screw hole 3e, hand push button 3f and valve element 3g;Wherein Reversal valve valve block control line interface 3a connection valve blocks control line 10, the bottom of reversal valve 3 is provided with reversal valve air admission hole 3b, reversal valve Working hole 3c, commutation valve outlet hole 3d, reversal valve air admission hole 3b and reversal valve air admission hole connecting hole 12f phases when being inflated to detection hole Logical, reversal valve working hole 3c is communicated with reversal valve working hole connecting hole 12g, and commutation valve outlet hole 3d is separated by valve element 3g;Detection Commutation valve outlet hole 3d is communicated with commutation valve outlet hole connecting hole 12h when hole is vented, and reversal valve working hole 3c works with reversal valve Hole connecting hole 12g is communicated, and reversal valve air admission hole 3b is separated by valve element 3g;It is tight that the bottom diagonal position of reversal valve 3 is provided with reversal valve Determine screw hole 3e, be connected with reversal valve tightening screwed hole 12e, reversal valve 3 is fixedly connected on flow distribution plate 12;Hand push button 3f Break-make for controlling reversal valve working hole 3c and commutation valve outlet hole 3d manually, is acted on same with the energized phase of reversal valve 3.
The reversal valve mounting screw 15 will be combined by reversal valve set screw hole 3e and reversal valve tightening screwed hole 12e Valve block component 9 is arranged on leak-testing instrument frame, and the body mounting screw 16 will be combined by fixing screws connecting hole 12a Valve block component 9 is arranged on leak-testing instrument frame.
It should be noted that the connection signal that leakage tester 6 is provided only passes to corresponding and detected oil hole Connected reversal valve, and the reversal valve being connected with other holes does not receive connection signal, is not at on-state.
Reversal valve in embodiment, is German burkert Products, model 0331 is two-position three-way electromagnetic commutation Valve.
Known by Fig. 8, the junction box 11 is set to rectangular parallelepiped structure, including shell 11a, internal wiring plate 11b, external terminal board 11c, outer layer binding post 11d, interconnector 11e, internal layer binding post 11f, the shell 11a of junction box 11 are internally provided with internal wiring Plate 11b and external terminal board 11c, side relative with master control line 5 internal wiring plate 11b is provided with internal layer binding post 11f, external connection Side relative with valve block control line 10 plate 11c is provided with outer layer binding post 11d, internal layer binding post 11f and outer layer binding post 11d Quantity is identical, and is connected one to one by interconnector 11e;Master control line 5 enters inside junction box, control wire core point Open, be connected with the internal layer binding post 11f being fixed on internal wiring plate 11b;External cabling post 11d and each bar valve block control line 10 1 One correspondence connection, valve block control line 10 stretches out from the upper end of junction box 11, the quantity of valve block control line 10 and the quantity one of reversal valve Cause;Therefore the control signal that leakage tester is provided by master control line can pass to valve by the shunting action of junction box 11 Block control line 10, and then pass to corresponding reversal valve 3, it is that the signal that leakage tester 6 is sent is passed to pair respectively that it, which is acted on, The reversal valve answered, different reversal valves 3 are connected from different detection holes;The signal of master control line 5 is divided into by the junction box 11 Multiple valve block control line signals, so as to control multiple reversal valves to be operated.
The master control line 5 is set to two, and one end of the master control line 5 is by controlling wire core to be connected to junction box On interior internal layer binding post 11f, the other end of master control line 5 is fixedly installed control line plug 5a, the control line plug 5a For the RS232 serial communication interfaces of standard, for being connected with control unit in leakage detector, surveyed for receiving simultaneously transport leaks The control signal that examination instrument control unit is sent, the interface can be purchased from the market.
The described tractor gearbox body oil hole leak detection application method of valve block assembly, is comprised the following steps that:
One)According to Fig. 3, Fig. 4, assembling combination valve block component 9, by the reversal valve air admission hole 3b on each reversal valve 3, commutation Every group of reversal valve air admission hole connecting hole 12f, reversal valve working hole on valve working hole 3c, commutation valve outlet hole 3d and flow distribution plate 12 Connecting hole 12g, commutation valve outlet hole connecting hole 12h are correspondingly arranged;Pass through reversal valve set screw hole 3e and reversal valve clamp screw Reversal valve 3 is fixedly installed with reversal valve mounting screw 15 in pit 12e on flow distribution plate 12;
One end of detection hole inlet suction port 17 is screwed in into detection gas inlet hole connecting hole 12b;One end of inlet suction port 18 is revolved Enter air inlet connection aperture 12c;One end of plug 14 is screwed in into air inlet end aperture mouthful 12d, air inlet pipeline gas leakage is prevented;In steam vent Breather plug 13 is set in mouth 12i, is conducive to whole pipeline gas to discharge, and obstructs external dust into pipeline blockage pipeline;
Two)According to Fig. 4, Fig. 8, junction box 11 is assembled, master control line 5 enters inside junction box, control wire core is separated, with The internal layer binding post 11f connections being fixed on internal wiring plate 11b;A pair of external cabling post 11d and each bar valve block control line 10 1 It should connect, valve block control line 10 stretches out from the upper end of junction box 11;
Three)Combination valve block component 9 and junction box 11 are connected, by junction box attachment screw hole 12j screws by junction box 11 are fixedly installed on combination valve block component 9, and one end of valve block control line 10 is connected with the upside of junction box 11, valve block is controlled The other end of line 10 is connected with the reversal valve valve block control line interface 3a of reversal valve 3;
Four)Valve block assembly 8 is connected with leakage tester 6, one end of master control line 5 is connected with the downside of junction box 11, main The other end of control line 5 is connected by control line plug 5a with leakage tester 6;By one end of loading line 4 and inlet suction port 18 grafting, the other end and the UNICOM of leakage tester 6 of loading line 4;
Five)Valve block assembly 8 is connected with gearbox body 1, by detecting the connecting detection gas inlet hole joint 17 of air pipe 2 and envelope Blocking component and gearbox body 1, realize and each detection hole are inflated;
Six)Tested gearbox body 1 is blocked;
Seven)Press and start detection button on leakage tester 6, detected;
Eight)Whether recording detection data, leakage test instrument automatic discrimination is qualified;
Nine)The leak detection of next gearbox body 1 is carried out, six are repeated the above steps)~ eight).
Tractor gearbox body oil hole leak detection valve block assembly of the present invention, the combination of multiple reversal valves is existed Together, once handling can complete the leak detection of whole oil holes on tractor gearbox body;Pass through common pipeline and envelope Blocking component and the quick grafting of leakage detector, using flexibly quick detachable, can connect from different blocking components and leakage detector Connect, detect the tractor gearbox body of different cultivars.
Part not in the detailed description of the invention is prior art.
Further illustrate:The embodiment selected in this paper embodiments for the open purpose of the present invention, It is presently considered to be suitable, but should be noted that it is contemplated that belonging to including all in this design and the scope of the invention The all changes of embodiment and improvement.

Claims (6)

1. a kind of tractor gearbox body oil hole leak detection valve block assembly, it is characterized in that:Including combination valve block component (9), valve block control line(10), junction box(11)And master control line(5), the combination valve block component(9)One end pass through detection Air pipe(2)With gearbox body(1)Connection, the combination valve block component(9)The other end pass through valve block control line(10)With dividing Line box(11)One end connection, the junction box(11)The other end pass through master control line(5)With leakage tester(6)Connection; The combination valve block component(9)It is set to rectangular parallelepiped structure, the combination valve block component(9)Including flow distribution plate(12), several Reversal valve(3), breather plug(13), plug(14), reversal valve mounting screw(15), body mounting screw(16), detection gas inlet hole Joint(17), inlet suction port(18);Reversal valve(3)It is fixedly installed on flow distribution plate(12)Front, junction box(11)It is fixedly installed In flow distribution plate(12)Right side, detection hole inlet suction port(17)It is fixedly installed on flow distribution plate(12)Left side, inlet suction port(18)Connection In flow distribution plate(12)Upside left part, plug(14)It is connected to flow distribution plate(12)Lower left side, breather plug(13)It is arranged at flow distribution plate (12)Right part above and below both sides, master control line(5)One end and junction box(11)Downside is connected, master control line(5)The other end Pass through control line plug(5a)With leakage tester(6)It is connected, valve block control line(10)One end and junction box(11)Upside connects Connect, the valve block control line(10)The other end and reversal valve(3)Reversal valve valve block control line interface(3a)Connection;Described point Flow plate(12)Corner be respectively arranged with the fixing screws connecting hole being connected with external stability(12a), in flow distribution plate(12)It is interior Portion is provided with air inlet pipeline(12k), gas exhaust piping(12l), air inlet pipeline(12k)With gas exhaust piping(12l)Through whole point Flow plate(12)Length direction, and air inlet pipeline(12k)With gas exhaust piping(12l)It is parallel, air inlet pipeline(12k)Upper end is air inlet Connect aperture(12c), the air inlet connection aperture(12c)With inlet suction port(18)One end grafting, inlet suction port(18)It is another One end is by connecting loading line(4)With leakage tester(6)UNICOM, the air inlet pipeline(12k)Lower end be air inlet end Aperture(12d), air inlet end aperture(12d)With plug(14)One end grafting;Gas exhaust piping(12l)Two ends be respectively Vent ports(12i), the vent ports(12i)For setting breather plug(13);The air inlet connects aperture(12c), air inlet End aperture(12d)And vent ports(12i)It is coniform hole;The flow distribution plate(12)Detection hole is provided with the left of width Air inlet connecting hole(12b), the detection gas inlet hole connecting hole(12b)Aperture be bellmouth, the detection gas inlet hole connecting hole (12b)With detection hole inlet suction port(17)One end grafting;Detection hole inlet suction port(17)The other end with detection air pipe(2) Connection;The flow distribution plate(12)Front is provided with reversal valve air admission hole connecting hole in the width direction(12f), reversal valve working hole connect Connect hole(12g), commutation valve outlet hole connecting hole(12h), the reversal valve air admission hole connecting hole(12f), reversal valve working hole connect Connect hole(12g), commutation valve outlet hole connecting hole(12h)Set point-blank, wherein reversal valve air admission hole connecting hole(12f) With air inlet pipeline(12k)Vertically communicate, reversal valve working hole connecting hole(12g)With detection gas inlet hole connecting hole(12b)Vertical phase Logical, commutate valve outlet hole connecting hole(12h)With gas exhaust piping(12l)Vertically communicate;The flow distribution plate(12)Front is along length side To being provided with two row's reversal valve tightening screwed holes(12e), the reversal valve tightening screwed hole(12e)Do not communicated with any hole;Institute State reversal valve(3)Line interface is controlled including reversal valve valve block(3a), reversal valve air admission hole(3b), reversal valve working hole(3c), change To valve outlet hole(3d), reversal valve set screw hole(3e), hand push button(3f)And valve element(3g);Reversal valve valve block control line connects Mouthful(3a)Connection valve block control line(10), reversal valve(3)Bottom is provided with reversal valve air admission hole(3b), reversal valve working hole (3c), commutation valve outlet hole(3d), reversal valve air admission hole when being inflated to detection hole(3b)With reversal valve air admission hole connecting hole(12f) Communicate, reversal valve working hole(3c)With reversal valve working hole connecting hole(12g)Communicate, commutate valve outlet hole(3d)By valve element(3g) Cut-off;Commutate valve outlet hole during detection hole exhaust(3d)With commutation valve outlet hole connecting hole(12h)Communicate, reversal valve working hole (3c)With reversal valve working hole connecting hole(12g)Communicate, reversal valve air admission hole(3b)By valve element(3g)Cut-off;Reversal valve(3)Bottom Portion's diagonal position is provided with reversal valve set screw hole(3e), with reversal valve tightening screwed hole(12e)Connection, by reversal valve(3) It is fixedly connected on flow distribution plate(12)On.
2. tractor gearbox body oil hole leak detection valve block assembly according to claim 1, it is characterized in that:It will change To valve mounting screw(15)Pass through reversal valve set screw hole(3e)With reversal valve tightening screwed hole(12e)By combination valve block component (9)It is arranged on leak-testing instrument frame, the body mounting screw(16)Pass through fixing screws connecting hole(12a)By combination valve Block component(9)It is arranged on leak-testing instrument frame.
3. tractor gearbox body oil hole leak detection valve block assembly according to claim 1, it is characterized in that:It is described Reversal valve(3)It is set to two position, three-way electromagnetic change valve.
4. tractor gearbox body oil hole leak detection valve block assembly according to claim 1, it is characterized in that:It is described Junction box(11)It is set to rectangular parallelepiped structure, including shell(11a), internal wiring plate(11b), external terminal board(11c), outer layer wiring Post(11d), interconnector(11e)With internal layer binding post(11f), junction box(11)Shell(11a)It is internally provided with internal wiring Plate(11b)And external terminal board(11c), internal wiring plate(11b)With master control line(5)Relative side is provided with internal layer binding post (11f), external terminal board(11c)With valve block control line(10)Relative side is provided with outer layer binding post(11d), internal layer binding post (11f)Quantity and outer layer binding post(11d)Quantity is identical, and passes through interconnector(11e)Connect one to one;Main control Line(5)Into inside junction box, control wire core is separated, with being fixed on internal wiring plate(11b)On internal layer binding post(11f)Even Connect;External cabling post(11d)With each bar valve block control line(10)Connect one to one, valve block control line(10)From junction box(11) Upper end is stretched out, valve block control line(10)Quantity it is consistent with the quantity of reversal valve.
5. tractor gearbox body oil hole leak detection valve block assembly according to claim 1, it is characterized in that:It is described Master control line(5)It is set to two, the master control line(5)One end by controlling wire core to be connected to the internal layer in junction box Binding post(11f)On, master control line(5)The other end be fixedly installed control line plug(5a), the control line plug(5a) For the RS232 serial communication interfaces of standard, it is connected with control unit in leakage detector.
6. the application method of tractor gearbox body oil hole leak detection valve block assembly according to claim 1, its It is characterized in:Comprise the following steps that:
One)Assemble combination valve block component(9), by each reversal valve(3)On reversal valve air admission hole(3b), reversal valve working hole (3c), commutation valve outlet hole(3d)With flow distribution plate(12)On every group of reversal valve air admission hole connecting hole(12f), reversal valve working hole Connecting hole(12g), commutation valve outlet hole connecting hole(12h)It is correspondingly arranged;Pass through reversal valve set screw hole(3e)And reversal valve Tightening screwed hole(12e)Use reversal valve mounting screw(15)In flow distribution plate(12)On reversal valve is fixedly installed(3);
By detection hole inlet suction port(17)One end screw in detection gas inlet hole connecting hole(12b);By inlet suction port(18)One end Screw in air inlet connecting hole mouthful(12c);By plug(14)One end screw in air inlet end aperture mouthful(12 d), prevent air inlet pipeline from leaking Gas;In vent ports(12i)Middle setting breather plug(13);
Two)Assemble junction box(11), master control line(5)Into inside junction box, control wire core is separated, with being fixed on internal wiring Plate(11b)On internal layer binding post(11f)Connection;External cabling post(11d)With each bar valve block control line(10)The company of one-to-one corresponding Connect, valve block control line(10)From junction box(11)Upper end is stretched out;
Three)Connect combination valve block component(9)And junction box(11), pass through junction box attachment screw hole(12j)With screw by separated time Box(11)It is fixedly installed on combination valve block component(9)On, by valve block control line(10)One end and junction box(11)Upside is connected, By valve block control line(10)The other end and reversal valve(3)Reversal valve valve block control line interface(3a)Connection;
Four)By valve block assembly(8)With leakage tester(6)Connection, master control line(5)One end and junction box(11)Downside connects Connect, master control line(5)The other end pass through control line plug(5a)With leakage tester(6)It is connected;By loading line(4)One End and inlet suction port(18)Grafting, loading line(4)The other end and leakage tester(6)UNICOM;
Five)By valve block assembly(8)With gearbox body(1)Connection, by detecting air pipe(2)Connecting detection gas inlet hole joint(17) With blocking component and gearbox body(1);
Six)To being tested gearbox body(1)Blocked;
Seven)Press leakage tester(6)Upper beginning detection button, is detected;
Eight)Whether recording detection data, leakage test instrument automatic discrimination is qualified;
Nine)Carry out next gearbox body(1)Leak detection, repeat the above steps six)~ eight).
CN201410763124.5A 2014-12-12 2014-12-12 Tractor gearbox body oil hole leak detection valve block assembly and application method Active CN104483070B (en)

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