CN2693505Y

CN2693505Y - Oil-gas type buffering and damping oil cylinder for vehicle for mining

Info

Publication number: CN2693505Y
Application number: CN 200320129240
Authority: CN
Inventors: 杨振声; 贾庆良; 戴志晔; 张学荣; 樊运平; 王金喜; 袁利才; 张跃荣
Original assignee: TAIYUAN BRANCH OF COAL SCIENTIFIC RESEARCH GENERAL INST
Current assignee: TAIYUAN BRANCH OF COAL SCIENTIFIC RESEARCH GENERAL INST
Priority date: 2003-12-23
Filing date: 2003-12-23
Publication date: 2005-04-20
Anticipated expiration: 2013-12-23

Abstract

The utility model relates to an oil-gas type buffering and damping oil cylinder for vehicle for mining which mainly comprises a cylinder, a connecting body, a front cover, a back cover, an air chamber, an air piston, an inflation valve, an oil chamber, an oil piston, a piston rod, a manifold block and a control valve. The utility model adopts the combining of the cylinder and the oil cylinder, with the compression and the expansion of the high pressure nitrogen, the high-pressure oil source can be injected and discharged, the piston can be dragged, the piston rod can telescopic in order to adjust the distance of the chassis and the rocker of the mining vehicle, and the purpose of buffering and vibration reducing can be reached. The utility model has simple structure, reasonable installing, easy use and good vibration reducing effect, which is an ideal buffering damping reducing device for mining vehicle, and the utility model can also be used for buffering and vibration reducing of other vehicles.

Description

Mine vehicle oil gas formula buffer shock-absorbing oil cylinder

Technical field

The utility model relates to a kind of oil gas formula buffer shock-absorbing oil cylinder of mine vehicle, belongs to the design of coal mine machinery equipment parts and the technical field of manufacturing.

Background technology

The transport vehicle that down-hole coal excavation uses is mostly worked under harsh environment, the on-the-spot road surface uneven owing to mine, big rise and fall, even also can collide at coal cutting roadway, impact load is big, tends to make the transport trolley lack of equilibrium, and parts damage, even also can cause machinery and fatal accident, so the engineering truck of down-hole hauling operation must be provided with buffering shock-absorbing device.

The buffering shock-absorbing device that present mining engineering truck uses has two classes: a class is the steel spring buffer shock-absorbing; One class is the hydro pneumatic suspension buffer shock-absorbing.

The steel spring buffering shock-absorbing device, because the lineament of itself, to uneven road surface, down-hole bad adaptability, when the hollow big rise and fall of road surface, because the limitation of steel spring structure and performance, the buffer shock-absorbing effect is less, very easily damages parts.

Though the hydro pneumatic suspension shock attenuation unit is better to uneven road surface comformability, also exist some worn-out sick and not enough, the one, the cushion cylinder complex structure, fabrication properties is poor; The 2nd, unreasonable structure, check valve, the oilhole controlled as buffering are located in the cylinder barrel, maintenance dismounting difficulty; The 3rd, during the vehicle adjustment, except regulating the length of cushion cylinder, also need special oil cylinder and the control corresponding mechanism of a cover, one towards a hydraulic fluid port oiling or drain the oil, also must drain the oil or oiling could be regulated the flexible of cushion cylinder and balancing cylinder simultaneously at another hydraulic fluid port, and the flexible of two kinds of oil cylinders can not be coordinated mutually, also needs the device that two kinds of oil cylinders motions interfere with each other that prevents of a cover special use; Four is that a covering device is provided with two different bag type accumulators, can not share, and it is big to take up room; The 5th, pipeline connects complicated, and the leakage link is many.

Summary of the invention

Purpose

Goal of the invention of the present utility model is exactly at disadvantages of background technology, design a kind of later-model mine vehicle oil gas formula buffer shock-absorbing oil cylinder, the injection and the discharge mode of the compression of employing high pressure nitrogen and expansion, high pressure fuel source, the piston rod of pulling oil cylinder is flexible, reach the purpose of buffer shock-absorbing, make buffer shock-absorbing oil cylinder volume little, in light weight, simple in structure, easy to operate, just effectiveness in vibration suppression increases substantially.

Technical scheme

The utility model keystone configuration comprises: cylinder barrel, connected body, protecgulum, bonnet, air cavity, gas piston, charge valve, no bar oil pocket, bar oil pocket, oily piston, piston rod, oil path block, control cock are arranged; Left part is a cylinder barrel 5, and right part is a cylinder barrel 4, and the centre is combined as a whole by connected body 3; Cylinder barrel 5 left ends are equipped with bonnet 1, seal ring 16, and bonnet 1 is equipped with charge valve 28, seal ring 22 by the chassis 25 that bearing pin 26 connects on the mine car on the bonnet 1, the air cavity 6 in charge valve 28 UNICOM's cylinder barrels 5; Gas piston 7, seal ring 17 are housed in the cylinder barrel 5, and the left side of gas piston 7 is an air cavity 6, and the right side is an oil pocket 62; The right-hand member of cylinder barrel 4 is equipped with protecgulum 2, seal ring 18, piston rod 29, seal ring 19, dust ring 15 are housed in protecgulum 2, the rocker 24 that piston rod 29 right-hand members connect on the mine car by bearing pin 27, oily piston 11, seal ring 20 are housed in the cylinder barrel 4, the left side of oil piston 11 is no bar oil pocket 8, the right side is for there being bar oil pocket 13, and piston rod 29 connects with oily piston 11 by protecgulum 2, and tightens up sealing by seal ring 21, elastic scheibe 9, cap 10, card key 23; On the barrel of cylinder barrel 4, be provided with oilhole 12,54; Connected body 3 outer left side connect with cylinder barrel 5, and the right side connects with cylinder barrel 4, and inside is cushion chamber 14, on connected body 3 outer walls oilhole 67 is arranged, and the oil pocket 62 in cushion chamber 14 and the cylinder barrel 5, the no bar oil pocket 8 in the cylinder barrel 4 communicate with one another; On the barrel of connected body 3 and cylinder barrel 4 oil path block 30 is housed, oil path block 30 passes on left oilhole 67 UNICOMs on oil pipe 55 and the connected body 3, and the right side is by oilhole 12 UNICOMs on oil pipe 56 and the cylinder barrel 4; The low pressure pipe that oilhole 54 on the cylinder barrel 4 connects on the mining car change-over valve.

Described oil path block 30 is rectangular, and control cock 31, packing seal 44 are housed in the bottom of oil path block 30, and the right part of control cock 31 is an oilhole 41, and oilhole 41 is by oilhole 12 UNICOMs on oil pipe 56 and the cylinder barrel 4; It is stifled 35 that check valve 32, packing seal 43, oil are housed on the top of oil path block 30, is spool 33, spring 34 in the check valve 32; Holocentric valve 32 connects with oilhole 65 on the control cock 31 by oil circuit 39, and check valve 32 connects while UNICOM's right side oilhole 42, the low pressure pipe on the mining car change-over valve of oilhole 42 connections by

oil circuit

37,36 with oilhole 66 on the control cock 31; Check valve 32 is by the oilhole 40 in oil circuit 38 UNICOMs left side, and oilhole 40 is by oilhole 67 UNICOMs on oil pipe 55 and the connected body 3; Check valve 32 communicates with one another by

oil circuit

38,39 and control cock 31, oilhole 40; The bottom of oil path block 30 is an oil stifled 57.

Described control cock 31 outsides are valve body 45, and there is dust ring 46 valve body 45 left outsides, and there is seal ring 52,53 right outside, and seal ring 52,53 connects with oil path block 30 inner chambers; Left part is an air cavity 58 in the valve body 45, and right part is an oil pocket 59; Left parts are equipped with regulating block 47 in the air cavity 58, have on the regulating block 47 pore 68 and with pore 61,60 UNICOMs; Spool 49, seal ring 51 are housed in air cavity 58 and oil pocket 59; Oil pocket 59 right-hand members are spacing by control mouth 69, ring washer 50; In air cavity 58, between regulating block 47 and spool 49, spring 48 is housed; Be provided with oilhole 65, cushion chamber 63, right part at the middle part of valve body 45 and be provided with oilhole 66, cushion chamber 64, oilhole 40, check valve 32 UNICOMs on oilhole 65 and the oil path block 30, oilhole 42 UNICOMs on oilhole 66 and the oil path block 30.

Effect

The utility model is compared with background technology has tangible advance, the mode that it has adopted cylinder and oil cylinder to combine, compression and expansion by high pressure nitrogen, the injection of high pressure fuel source and discharge, piston in the pulling cylinder barrel, stretching of piston rod, adjust the chassis on the mining car and the distance of rocker simultaneously, highly, reached the purpose of buffer shock-absorbing, this cylinder structure is simple, and oil path block and control cock are located at the cylinder barrel outside, maintenance is installed conveniently, processing ease, pipeline is few, it is few to leak bad joint, buffer shock-absorbing is effective, comformability is strong, is the buffering shock-absorbing device of very good coal mining vehicle, and the buffer shock-absorbing that this device also can be used for other vehicles uses.

Description of drawings

Fig. 1 is oil cylinder integral structure figure.

Fig. 2 is the D-D section-drawing of Fig. 1.

Fig. 3 is the C-C section oil path block constructional drawing of Fig. 1.

Fig. 4 is the control cock constructional drawing.

Shown in the figure, each piece number inventory is as follows:

1, bonnet, 2, protecgulum, 3, connected body, 4, cylinder barrel, 5, cylinder barrel, 6, air cavity, 7, the gas piston, 8, no bar oil pocket, 9, elastic scheibe, 10, cap, 11, the oil piston, 12, oilhole, 13, the bar oil pocket is arranged, 14, cushion chamber, 15, dust ring, 16, seal ring, 17, seal ring, 18, seal ring, 19, seal ring, 20, seal ring, 21, seal ring, 22, seal ring, 23, the card key, 24, rocker, 25, the chassis, 26, bearing pin, 27, bearing pin, 28, charge valve, 29, piston rod, 30, oil path block, 31, control cock, 32, check valve, 33, spool, 34, spring, 35, screw plug, 36, oil circuit, 37, oil circuit, 38, oil circuit, 39, oil circuit, 40, oilhole, 41, oilhole, 42, oilhole, 43, packing seal, 44, packing seal, 45, valve body, 46, dust ring, 47, regulating block, 48, spring, 49, spool, 50, link stopper, 51, seal ring, 52, seal ring, 53, seal ring, 54, oilhole, 55, oil pipe, 56, oil pipe, 57, screw plug, 58, air cavity, 59, oil pocket, 60, gas circuit, 61, gas circuit, 62, oil pocket, 63, cushion chamber, 64, cushion chamber, 65, oilhole, 66, oilhole, 67, oilhole, 68, pore, 69, the control mouth.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

Shown in Fig. 1,2, the left end bonnet 1 of oil gas formula buffer shock-absorbing oil cylinder connects with chassis 25 on the mine car by bearing pin 26, right-hand member piston rod 29 by bearing pin 27 connect with rocker 24 on the mine car, left parts are air cavity 6 in the cylinder barrel 5, charge into nitrogen by charge valve 28, the right part of cylinder barrel 5 is oil pocket 62, communicates with cushion chamber 14, the no bar oil pocket 8 in the cylinder barrel 4 in the connected body 3; Oily pistons 11 in the cylinder barrel 4 have been divided into bar oil pocket 13, no bar oil pocket 8 to inner chamber, oily piston 11, piston rod 29 can be in oil pocket under the control of oil pressure back and forth movement; Pressure in oil path block 30, the control cock 31 regulating control oil pockets, and the nitrogen in the extruding air cavity 6; Cylinder barrel 4,5, connected body 3 combine as a whole by welding, firm welding; Seal ring, dust ring must be selected for use in strictness, and sealing closely; Cylinder barrel 4,5, connected body 3 will be made of alloy structureal steel, to ensure its high strength, impact resistance; Each oilhole, oil circuit, oil pipe are unimpeded.

Shown in Figure 3, oil path block 30 is modulated pressure oil circuits, in use plays crucial effect, and the check valve 32 in it, control cock 31 are wanted strict and installed, and unimpeded, the cleaning of each oil circuit will often be cleaned, and must not stop up; Oil path block 30 will be made of high-intensity alloy structureal steel; Low pressure pipe UNICOM on oilhole 42 and the mining car change-over valve.

Shown in Figure 4, the valve body 45 of control cock 31 will be made and the processing of hardening of alloy structureal steel, and valve body 45 will cooperate tightly with spool 49, and oilhole 65,66 is unimpeded, and spring 48 elastic force are moderate, and seal ring 52,53, dust ring 46 are closely durable; Spool 49 can be in valve body 45 sway, control mouthful 69 no pressure or pressure are during less than the thrust of spring 48, spool 49 rests on right position under the thrust of spring 48, this moment, oilhole 65 communicated with oilhole 66, when control mouthful 69 pressure during greater than the thrust of spring 48, spool 49 is moved to the left, oilhole 65 is cut off with oilhole 66.

The installation of this oil cylinder is identical with common oil cylinder, oilhole 54,42 respectively with mining car change-over valve on the corresponding connection of low pressure pipe, must not misplace.

Using method is as follows:

This device can be realized buffer shock-absorbing easily and regulate the chassis and the rocker height of mine vehicle, when normal vehicle operation, must handle the change-over valve commutation of mining car earlier, high pressure fuel source injects high pressure fuel source by

oilhole

42,40, oil pipe 55, oilhole 67 to no bar oil pocket, oily piston 11 in the cylinder barrel 4 moves right, and drives piston rod 29 simultaneously and moves right, when the seal ring 20 on the oily piston 11 moves to the right of oilhole 12, high pressure fuel source injects from oilhole 12, the oil circuit sealing of control cock 31; High pressure fuel source stops to inject, and the change-over valve on the mining car resets, and this moment, this oil cylinder played buffer action; When not having impact load, the oily pistons 11 in the cylinder barrel 4 rest on the static balance position, and the thrust of oil cylinder and the deadweight of vehicle balance each other, and balance each other with the thrust gas of air cavity 6, and chassis height remains unchanged; When impact loading, high pressure nitrogen is compressed, and absorbs impact kinetic energy, and the piston rods 29 in the cylinder barrel 4 contract in cylinder barrel, and the rocker 24 that spurs simultaneously on the mining car contracts inwards, makes that chassis 25 is highly corresponding to diminish; After impact load reduced, high pressure nitrogen expanded, and piston rod 29 is overhanging to cylinder barrel 4, and rocker 24 is to overhanging, the highly corresponding increasing in chassis 25; When oilhole 54 was connected high pressure fuel source, oilhole 42 connection low-voltage tubes, high pressure fuel source had entered bar oil pocket 13, and piston rod 29 contracts for 4 li to cylinder barrel, and vehicle chassis reduces, and is beneficial to about cargo handing and the personnel.

Claims

1, a kind of mine vehicle oil gas formula buffer shock-absorbing oil cylinder, it is characterized in that: keystone configuration comprises: cylinder barrel, connected body, protecgulum, bonnet, air cavity, gas piston, charge valve, no bar oil pocket, bar oil pocket, oily piston, piston rod, oil path block, control cock are arranged; Left part is cylinder barrel (5), and right part is cylinder barrel (4), and the centre is combined as a whole by connected body (3); Cylinder barrel (5) left end is equipped with bonnet (1), seal ring (16), and bonnet (1) is equipped with charge valve (28), seal ring (22), the air cavity (6) in charge valve (28) UNICOM's cylinder barrel (5) by the chassis (25) on bearing pin (26) the connection mine car on the bonnet (1); Gas piston (7), seal ring (17) are housed in the cylinder barrel (5), and the left side of gas piston (7) is air cavity (6), and the right side is oil pocket (62); The right-hand member of cylinder barrel (4) is equipped with protecgulum (2), seal ring (18), piston rod (29), seal ring (19), dust ring (15) are housed in protecgulum (2), piston rod (29) right-hand member is by the rocker (24) on bearing pin (27) the connection mine car, oily piston (11), seal ring (20) are housed in the cylinder barrel (4), the left side of oil piston (11) is a no bar oil pocket (8), the right side is for there being bar oil pocket (13), piston rod (29) connects with oily piston (11) by protecgulum (2), and tightens up sealing by seal ring (21), elastic scheibe (9), cap (10), card key (23); On the barrel of cylinder barrel (4), be provided with oilhole (12), (54); Connected body (3) outer left side connects with cylinder barrel (5), and the right side connects with cylinder barrel (4), and inside is cushion chamber (14), on connected body (3) outer wall oilhole (67) is arranged; Oil pocket (62) in cushion chamber (14) and the cylinder barrel (5), the no bar oil pocket (8) in the cylinder barrel (4) communicate with one another; On the barrel of connected body (3) and cylinder barrel (4) oil path block (30) is housed, oil path block (30) passes on left oilhole (67) UNICOM on oil pipe (55) and the connected body (3), and the right side is by oilhole (12) UNICOM on oil pipe (56) and the cylinder barrel (4); Oilhole (54) on the cylinder barrel (4) connects the low pressure pipe on the mining car change-over valve.

2, mine vehicle oil gas formula buffer shock-absorbing oil cylinder according to claim 1, it is characterized in that: described oil path block (30) is rectangular, in the bottom of oil path block (30) control cock (31) is housed, the right part of control cock (31), packing seal (44) is oilhole (41), and oilhole (41) is by oilhole (12) UNICOM on oil pipe (56) and the cylinder barrel (4); Check valve (32), packing seal (43), oil stifled (35) are housed on the top of oil path block (30), are spool (33), spring (34) in the check valve (32); Holocentric valve (32) connects with oilhole (65) on the control cock (31) by oil circuit (39), check valve (32) connects with oilhole (66) on the control cock (31) by oil circuit (37), (36), while UNICOM's right side oilhole (42), oilhole (42) connects the low pressure pipe on the mining car change-over valve; Check valve (32) is by the oilhole (40) in oil circuit (38) UNICOM left side, and oilhole (40) is by oilhole (67) UNICOM on oil pipe (55) and the connected body (3); Check valve (32) communicates with one another with control cock (31), oilhole (40) by oil circuit (38), (39); The bottom of oil path block (30) is oil stifled (57).

3, mine vehicle oil gas formula buffer shock-absorbing oil cylinder according to claim 1, it is characterized in that: described control cock (31) is outside to be valve body (45), there is dust ring (46) the left outside of valve body (45), there are seal ring (52), (53) in right outside, and seal ring (52), (53) connect with oil path block (30) inner chamber; The interior left part of valve body (45) is air cavity (58), and right part is oil pocket (59); The interior left part of air cavity (58) is equipped with regulating block (47), have on the regulating block (47) pore (68) and with pore (61), (60) UNICOM; Spool (49), seal ring (51) are housed in air cavity (58) and oil pocket (59); Oil pocket (59) right-hand member is spacing by control mouthful (69), ring washer (50); In air cavity (58), between regulating block (47) and spool (49), spring (48) is housed; Be provided with oilhole (65), cushion chamber (63), right part at the middle part of valve body (45) and be provided with oilhole (66), cushion chamber (64), oilhole (40), check valve (32) UNICOM on oilhole (65) and the oil path block (30), oilhole (42) UNICOM on oilhole (66) and the oil path block (30).