CN2195566Y

CN2195566Y - Hydraulic lifting device for tracks

Info

Publication number: CN2195566Y
Application number: CN 94216190
Authority: CN
Inventors: 张洪达; 张小峰
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-06-27
Filing date: 1994-06-27
Publication date: 1995-04-26
Anticipated expiration: 2004-06-27

Abstract

The utility model relates to a slide rack type hydraulic lifting device for tracks. The utility model provides a lifting device for tracks, which has simple and compact structure, small size, light weight, good service performance. The slide rack type hydraulic lifting device for tracks comprises a working cylinder, an oil tank, a plunger pump, an oil passage, a control valve and a slide rack type actuating mechanism which comprises a chassis and a track lifting hook. The chassis is provided with a vertical slide with a front guide rail and a rear guide rail, and the working cylinder body is provided with a supporting plate and a hook. The track lifting hook is hooked on the hook, and the supporting plate and the track lifting hook are respectively provided with a slide way and a slide slot which are slid along the surface of the front guide rail and the rear guide rail of the vertical slide rack.

Description

Hydraulic lifting device for tracks

The utility model belongs to the railway track construction equipment, particularly a kind of sliding guide type hydraulic rail lifter.

When rolling stock moved on line track, the active force to circuit generation vertical direction sank railway track, thereby has increased the running resistance of rolling stock, has influenced road speed and traffic safety.For recovering the normal position of line track, usually adopt by working cylinder, the hydraulic pressure rail jack that plunger displacement pump and lever executing agency form, its executing agency track lifting lever of serving as reasons, the lever executing agency that track lifting wheel and pull bar are formed, the two ends of track lifting lever are connected with pull bar with the wheel that raises track respectively, it is positioned at the middle part that fulcrum on the working cylinder is in the track lifting lever, make the top lift of track lifting power less than working cylinder, especially when track lifting lever and working cylinder axis are in the out of plumb state, working cylinder bears the moment of flexure in the vertical plane, often for obtaining enough track lifting power and structural strength, strengthen physical dimension, thereby make the rail jack complex structure, volume is big, from heavy, the operation effort.

The purpose of this utility model provide a kind of simple in structure, compact, volume is little, from heavy and light, sliding guide type hydraulic rail lifter that functional performance is good.

The utility model is made up of working cylinder, fuel tank, plunger displacement pump, oil circuit, control valve and executing agency, working cylinder is made up of piston and cylinder body, the piston that the end is provided with pin shaft hole places in the cylinder body, and cylinder body is divided into rod chamber and rodless cavity, cylinder body the place ahead bilateral symmetry is provided with hook, and the cylinder body rear is provided with the supporting metal plate of band slideway; Fuel tank is positioned on the cylinder body; Plunger displacement pump is made up of plunger, the pump housing and actuator; Oil circuit is made of interface channel between the output channel between the input channel between plunger displacement pump and the fuel tank, plunger displacement pump and the working cylinder rodless cavity, working cylinder rod chamber and the fuel tank and drainback passage, the overflow ducts between working cylinder rodless cavity and the fuel tank; Control valve is by laying respectively at one way valve on input, the output channel, being positioned at the oil return valve on the drainback passage and the overflow valve that is positioned on the overflow ducts constitutes; Executing agency is a balladeur train formula executing agency, it is made up of chassis and track lifting hook, the rear portion on chassis is arranged with respectively two vertical balladeur trains with forward and backward guide pass, forward and backward guide pass is parallel to the axis of working cylinder, the middle part on chassis is provided with the pin shaft hole that is connected with the piston rod of working cylinder, and be connected with the piston rod of working cylinder through bearing pin, working cylinder is installed on the chassis, and makes of the rear rail face slippage of the slideway of working cylinder supporting metal plate along vertical balladeur train; Track lifting is hooked in and is the crotch shape that an end is provided with two bifurcateds in the horizontal plane, and be provided with the hook hole that hangs on the hook of both sides, working cylinder cylinder body the place ahead sticking in two minutes, two bifurcated end faces are provided with along the chute of the vertical leading rail level slippage of balladeur train, and the other end of track lifting hook is provided with the track lifting hook arm perpendicular to the cylinder body axis.

Because the utility model has adopted balladeur train formula executing agency, make countertorque that the track lifting reaction force of track lifting hook produces by the slideway on track lifting hook chute and the working cylinder cylinder body supporting metal plate respectively with the forward and backward guide pass of vertical balladeur train between the trimming moment balance that produces of power, working cylinder only bears axial force, not only structure stress is reasonable, and given full play to the top lift of working cylinder, make that rail jack is simple in structure, compact, volume is little, from heavy and light, operation is light, functional performance good, thereby reach the purpose of this utility model.

Fig. 1 is the utility model structural representation elevation

Fig. 2 is the utility model structural representation vertical view

Fig. 3 is an A-A sectional drawing among Fig. 1

Fig. 4 is B-O-O ' among Fig. 3-C sectional drawing

Fig. 5 is D-O-O ' among Fig. 3-C sectional drawing

Fig. 6 is an E-E sectional drawing among Fig. 1

Fig. 7 is a F-F sectional drawing among Fig. 1

Fig. 8 is the utility model hydraulic system principle figure.

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

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the utility model is made up of working cylinder 1, fuel tank 2, double-action plunger pump 3, oil circuit 4, control valve 5 and executing agency 6, working cylinder 1 is made up of piston 11 and cylinder body 12, cylinder body 12 has main body 121, upper cylinder cover 122 and the following cylinder cap 123 of band through hole 1211, the place ahead bilateral symmetry of main body 121 is provided with hook 1211, what the rear was provided with band slideway 12121 holds metal plate 1212, following cylinder cap 123 is provided with axially extending bore 1231, and upper and lower cylinder cap 122,123 is installed in the two ends of the through hole 1211 of main body 121 respectively; Piston 11 is made of piston head 111 and piston rod 112, the external diameter of the external diameter of piston head 111 and piston rod 112 matches with through

hole

1211 and 1231 respectively, the outer end of piston rod 112 is provided with the lug 1122 of band radial peg axis hole 1121, piston 11 places in the cylinder body 12, and cylinder body 12 is divided into rod chamber 124 and rodless cavity 125; Fuel tank 2 is provided with tank filler sleeve 21 for the hollow housing that main body 121 and upper support metal plate 1212 thereof by cylinder body 12 extend back and constitute above fuel tank 2; As shown in Figure 6, double-action plunger pump 3 is by plunger 31, the split type pump housing 32 and actuator 33 constitute, the split type pump housing 32 is for being positioned at fuel tank 2 and being on the coaxial line that extends internally of the last lower wall from fuel tank 2, trap 321,322, on, trap 321,322 outboard end is provided with, lower seal oil stifled 323,324, plunger 31 is a Cylinder, its two ends place respectively the split type pump housing 32 on, trap 321, in 322, and make its two ends respectively with the split type pump housing 32 on, trap 321, on constituting between 322, following working chamber 34,35, its stage casing is provided with tooth bar 311, actuator 33 is by rocking arm 331; rocker arm shaft 332 and gear 333 formed; rocker arm shaft 332 be installed in fuel tank 2 before; on the rear wall; and make its front end 3321 stretch out outside the fuel tank 2; rocking arm 331 is provided with extension bar hole 3311; it is installed on the front end 3321 of rocker arm shaft 332; gear 333 is preferably the fan tooth, and it is installed in the stage casing of rocker arm shaft 332, and makes the gear teeth on it mesh with the tooth bar on the plunger 31 311; As shown in Figure 3, the axis of the split type pump housing 32 is parallel with the axis of working cylinder 1, the axle Zhang Chuizhi of the axis of rocker arm shaft 332 and plunger 31; As shown in Figure 8, oil circuit 4 is by two

input channels

41,42, article two,

output channel

43,44, drainback passage 45, overflow ducts 46 and interface channel 47 constitute, interface channel 47 is between the rod chamber 124 and fuel tank 2 of working cylinder 1,

output channel

43,44 lay respectively at double-action plunger pump 3 on, following working chamber 34,35 and the rodless cavity 125 of working cylinder 1 between,

input channel

41,42 lay respectively at double-action plunger pump 3 on, following working chamber 34,35 and fuel tank 2 between, it is respectively equipped with and is positioned at, lower seal oil stifled 323, central blind hole 3231 on 324,3241 and

annular groove

3232,3242, drainback passage 45 is between the rodless cavity 125 and fuel tank 2 of working cylinder 1, and overflow ducts 46 is positioned at

output channel

43,44 and fuel tank 2 between; Each passage of oil circuit 4 is arranged on the cylinder body 12 and extended fuel tank 2 thereof of working cylinder 1; Control valve 5 is by laying respectively at one

way valve

51,52,53,54 on input, the

output channel

41,42,43,44, being positioned at the oil return valve 55 on the drainback passage and the overflow valve 56 that is positioned on the overflow ducts 46 constitutes, as shown in Figure 7, oil return valve 55 is made of handle 551, eccentric wheel 552, pin 553, push rod 554 and one way valve 555; Executing agency 6 is a balladeur train formula executing agency, it is made up of chassis 61 and track lifting hook 62, before the rear portion on chassis 61 is arranged with and is with respectively, rear rail face 6111, two vertical balladeur trains 611 of 6112, before,

rear rail face

6111,6112 are parallel to the axis of working cylinder 1, the middle part on chassis 61 is arranged with vertical and horizontal reinforcing rib 612 respectively, 613, and formation through hole 614, laterally be provided with the pin shaft hole 6131 that is connected with piston rod 112 on the reinforcing rib 613, and be connected with piston rod 112 through bearing pin 7, working cylinder 1 is installed on the chassis 61, and the slideway 12121 of supporting metal plate 1212 of cylinder body 12 both sides that makes working cylinder 1 is along rear rail face 6112 slippages of vertical balladeur train 611; Track lifting hook 62 is the crotch shape that an end is provided with two bifurcateds 621 in horizontal plane, and sticking the hook hole 6211 that is provided with on the cylinder body 12 both sides hook 1211 that is mounted on working cylinder 1 in two minutes, two bifurcateds, 621 end faces are provided with along the chute 6212 of vertical balladeur train 611 leading rail level 6111 slippages, the other end of track lifting hook 621 is a track lifting hook arm 622, and makes its axis perpendicular to working cylinder 1.

During use, track lifting hook arm 622 is placed the flange of rail, handle the handle 551 of oil return valve 55, make oil return valve 55 in the closed position, operating rock arm 331, and through rocker arm shaft 332, tooth bar 311 on gear 333 and the plunger 31, make plunger 31 on the split type pump housing 32, trap 321, move back and forth in 322, and make the last working chamber 34 of two use plunger displacement pumps 3 compress intracavity liquids, after the supercharging respectively in the rodless cavity 125 of one way valve 53 and output channel 43 input service cylinders 1, following working chamber 35 volumes of double-action plunger pump 3 increase, liquid in the rod chamber 124 of fuel tank 2 and working cylinder 1 is through input channel 42, the annular groove 3242 of Seal Oil stifled 324, central blind hole 3241 and one way valve 52 enter in the right working chamber 35, and so forth, the rodless cavity 125 interior fluid pressures of working cylinder 1 are increased gradually, make working cylinder 1 under the pressure oil effect, drive track lifting hook 62 and upwards rise of supporting metal plate 1212, slideway 12121 on chute 6212 on the track lifting hook 62 and the supporting metal plate 1212 is respectively before vertical balladeur train 611,

rear rail face

6111,6112 slippages, track lifting hook arm 622 lifts track 8 slowly.

When operation finishes, open oil return valve 55, make the rodless cavity 125 interior liquid of working cylinder 1 go into fuel tank 2 45 times through oil return valve 55 and drainback passage.

Internal pressure increases when system, and when surpassing the limit value of overflow valve 56, overflow valve 56 is opened, and makes the rodless cavity 125 interior pressure fluids of working cylinder 1 flow into fuel tanks 2, system's release through overflow valve 56 and fluid course 46.

Claims

1, sliding guide type hydraulic rail lifter, it is made up of working cylinder, fuel tank, plunger displacement pump, oil circuit, control valve and executing agency, and working cylinder is made up of piston and cylinder body, and the piston that the end is provided with pin shaft hole places in the cylinder body, and cylinder body is divided into rod chamber and rodless cavity; Fuel tank is positioned on the cylinder body; Plunger displacement pump is made up of plunger, the pump housing and actuator; Oil circuit is made of interface channel between the output channel between the input channel between plunger displacement pump and the fuel tank, plunger displacement pump and the working cylinder rodless cavity, working cylinder rod chamber and the fuel tank and drainback passage, the overflow ducts between working cylinder rodless cavity and the fuel tank; Control valve is by laying respectively at one way valve on input, the output channel, being positioned at the oil return valve on the drainback passage and the overflow valve that is positioned on the overflow ducts constitutes; It is characterized in that described cylinder body the place ahead bilateral symmetry is provided with hook, the cylinder body rear is provided with the base plate of band slideway; Executing agency is a balladeur train formula executing agency, it is made up of chassis and track lifting hook, the rear portion on chassis is arranged with respectively two vertical balladeur trains with forward and backward guide pass, forward and backward guide pass is parallel to the axis of working cylinder, the middle part on chassis is provided with the pin shaft hole that is connected with the piston rod of working cylinder, and be connected with the piston rod of working cylinder through bearing pin, working cylinder is installed on the chassis, and the slideway that makes working cylinder supporting metal plate is along the rear rail of vertical balladeur train and slippage; Track lifting is hooked in and is the crotch shape that an end is provided with two bifurcateds in the horizontal plane, and be provided with the hook hole that hangs on the hook of both sides, working cylinder cylinder body the place ahead sticking in two minutes, two bifurcated end faces are provided with along the chute of the vertical leading rail level slippage of balladeur train, and the other end of track lifting hook is provided with the track lifting hook arm perpendicular to the cylinder body axis.

2, sliding guide type hydraulic rail lifter according to claim 1, it is characterized in that described plunger displacement pump is a double-action plunger pump, it is made up of plunger, the split type pump housing and actuator, the split type pump housing is the upper and lower cover of coaxial line that is positioned at fuel tank, the two ends of plunger place in the upper and lower cover of the split type pump housing, and making its two ends constitute upper and lower working chamber respectively and between the split type pump housing, its stage casing is provided with tooth bar; Actuator is made up of rocking arm, rocker arm shaft and gear, and the axis of rocker arm shaft is vertical with plunger axis, and rocking arm and gear are fixedly mounted on the rocker arm shaft, the tooth bar engagement on gear and the plunger.

3, sliding guide type hydraulic rail lifter according to claim 1 and 2, it is characterized in that described fuel tank be cylinder body main body and on the supporting metal plate cavity that extends back and constitute, the main body of working cylinder cylinder body and fuel tank formation siamese part.

4, sliding guide type hydraulic rail lifter according to claim 3 is characterized in that the middle part on described chassis is arranged with the vertical and horizontal reinforcing rib respectively and constitutes through hole, is positioned on the horizontal reinforcing rib through the pin shaft hole that bearing pin is connected with piston rod.

5, sliding guide type hydraulic rail lifter according to claim 4 is characterized in that the axis of described double-action plunger pump is parallel to the axis of working cylinder.

6, sliding guide type hydraulic rail lifter according to claim 5, the split type pump housing that it is characterized in that described double-action plunger pump are to be positioned at fuel tank and the upper and lower cover of coaxial line for extending internally from fuel tank two upper and lower walls.

7, sliding guide type hydraulic rail lifter according to claim 6, it is stifled to it is characterized in that described upper and lower cover outboard end is provided with upper and lower Seal Oil, which is provided with the central blind hole and the annular groove that constitute input channel.