CN2180550Y

CN2180550Y - Cart for disassembling hook of locomotive

Info

Publication number: CN2180550Y
Application number: CN 93226481
Authority: CN
Inventors: 于洪民
Original assignee: NANXIANG MAINTENANCE DEPT SHANGHAI RAILWAY BRANCH BUREAU
Current assignee: NANXIANG MAINTENANCE DEPT SHANGHAI RAILWAY BRANCH BUREAU
Priority date: 1993-10-26
Filing date: 1993-10-26
Publication date: 1994-10-26
Anticipated expiration: 2003-10-26

Abstract

The utility model relates to a cart for disassembling the hooks of a locomotive, which is tool set device for the intermediate repair or the shop repair of locomotives on railway locomotive depots. The utility model is characterized in that an entirety type staging body 3 and a replaceable front fork 5 are adopted, fixing bolts 21 are used for connecting the front fork 5 and the staging body 3, a bench K is installed at the joint of the front fork 5 and the staging body 3, the side plate of the staging body 3 is integrated with the bracket 15 of a high pressure main cylinder 6 to be an integral plate, an elevating cylinder 4 adopts a double-acting telescope feed cylinder, the oil cylinder body is installed on a vehicle body 1 through a sliding platform 9, the top end of a small piston rod 19 is connected to the staging body 3 through a retainer ring 22, the two rod cavities B and C of the elevating 4 share an oil passage T, an eyehole I is arranged on the small piston rod 19, and an eyehole J is arranged on a large piston rod 20.

Description

Cart for disassembling hook of locomotive

Locomotive coupler dismounting dolly described in the utility model belongs to the tooling device of railway locomotive depot locomotive un-wheeling repair or repair in shop operation.

The un-wheeling repair of locomotive or repair in shop operation all need locomotive coupler and energy disperser are overhauled.Because among the hook tail frame of coupler draft gear and forward and backward end plate position what hitch, during maintenance, must the compression buffer spring, when making the longitudinal size of the little what buffer tank of distance of forward and backward end plate, hitch and energy disperser just can unload or load onto.Because the coupler draft gear initial tension of spring is up to 600-800KN, and the longitudinal space of locomotive car body bottom and bottom of frame are all very narrow and small apart from the height of rail level, so the dismounting of hitch and energy disperser must be by what special tooling equipment--the hook dismounting dolly just can carry out.

There is following defective in hook dismounting dolly of the prior art:

1.. high pressure master cylinder support and front fork electricity consumption solid welding fix on the workplatform, and non-exchange, suffered application force is born by weld seam fully; The in use easy impaired distortion of support and front fork, and tear suddenly because of weld seam easily and cause the accident.

2.. the hoist cylinder of Working gantry adopts the single-acting telescoping cylinder.This oil cylinder has only hydraulic fluid port of rodless cavity, when the hydraulic fluid port oil-feed, promotes piston and stretches out; When the hydraulic fluid port oil extraction, piston relies on the deadweight withdrawal of parts such as Working gantry.Because the friction drag of piston and an oil cylinder ancient piece of jade, round, flat and with a hole in its centre, the resistance of ducting during oil extraction and the vacuum action of rod chamber, piston rod is easy to be stuck and moves malfunctioningly, causes the Working gantry lifting unreliable.

The purpose of this utility model provides a kind of locomotive coupler dismounting dolly of novelty, to solve the defective that locomotive coupler dismounting dolly exists in the prior art, satisfies operating needs.

Locomotive coupler dismounting dolly described in the utility model, its keystone configuration feature is: adopt integral type stand body and removable cast steel front fork, the side plate of Working gantry and high pressure master cylinder support are whole plates, hoist cylinder adopts the double acting telescoping cylinder, cylinder body is installed on the car body by platform slidably, the top of small piston rod is connected with the stand body, two rod chambers of hoist cylinder share an oil circuit, and adopt two apertures on the piston rod to come the fuel feeding and the oil extraction of automatic guidance rod chamber.

Through the locomotive coupler dismounting dolly after the above improvement, owing to adopted replaceable front fork structure and chord frame side plate, prolonged the service life of Working gantry and front fork, avoided accident.Hoist cylinder adopts two rod chambers to share an oil circuit, and fuel feeding and the oil extraction of adopting two apertures on the piston rod to come the automatic guidance rod chamber, has not only structurally satisfied the lifting requirement of Working gantry, and has made the lifting action of Working gantry more reliable and more stable.

Below use embodiment shown in the drawings, the utility model is described in further detail.

Fig. 1: the overall construction drawing of locomotive coupler dismounting dolly, and the expression hitch is in the relation of when mounting or dismounting and locomotive frame bottom.Wherein: 1 is the dolly car body, and 2 is Working gantry, and 3 is the stand body, 4 is hoist cylinder, and 5 is replaceable front fork, and 6 is the high pressure master cylinder, 7 is coupler draft gear, 8 is the dolly wheel, and 9 are platform slidably, and 10 is hydraulic efficiency pressure system, 11 is electric-control system, 12 is fuel tank, and 13 is hitch, and 14 for being positioned at the locomotive buffer tank of locomotive frame bottom.15 is chord frame side plate.Wherein 13 and 14 usefulness long and two-short dash linees draw, the target of expression hook dismounting dolly.

Fig. 2: the connection structure of replaceable front fork 5 and stand body 3.

Fig. 3: the constructional drawing of hoist cylinder 4.Wherein 16 is valve piston, and 17 is big piston, and 18 is cylinder body.

As shown in Figure 1, the hook dismounting dolly mainly can be divided into the two large divisions, i.e. car body 1 and Working gantry 2.Working gantry 2 mainly is made up of stand body 3, replaceable front fork 5 and high pressure master cylinder 6.Car body 1 is Working gantry 2 services, and hydraulic efficiency pressure system 10, electric-control system 11, fuel tank 12 all are installed on the car body 1.Be connected by hoist cylinder 4 between car body 1 and the Working gantry 2.

It is as follows that hitch, energy disperser are installed to the process that locomotive gets on:

1.. hitch 13(has been removed the hook tongue) lift on the Working gantry 2, the both wings integrated circuit board that makes front fork 5 is in the both sides of coupler draft gear lower back panel, and hook tail frame drops on the centre of front fork 5, makes the buting iron of high pressure master cylinder 6 be in the coupler hook body central recess.2.. start high pressure master cylinder 6, compression coupler draft gear 7 makes distance between the forward and backward end plate less than the fore-and-aft distance of locomotive buffer tank 14.3.. push away dolly and enter the locomotive bottom, utilize dolly wheel 8 and movable platform 9, adjust the position, make coupler draft gear 7 aim at locomotive buffer tank 14 along the locomotive vertical and horizontal; 4. start hoist cylinder 4, Working gantry 2 is risen, coupler draft gear 7 is sent into locomotive buffer tank 14; 5. alleviate high pressure master cylinder 6, coupler draft gear 7 stretches, and forward and backward end plate is pressed on the forward and backward backstop place of buffer tank 14, then supporting plate is installed.6.. alleviate hoist cylinder 4, Working gantry 2 is descended, dolly is pulled out the locomotive bottom.Installation process finishes.

The process and the said process of dismounting hitch are similar, just reversed in order.

In the utility model, as shown in Figure 1, the support of the side plate of Working gantry 2 and high pressure master cylinder 6 adopts a whole plate, i.e. chord frame side plate 15.Can avoid the defective that weld seam is torn between prior art medium-height trestle and the Working gantry like this.

The connection structure of replaceable front fork 5 and stand body 3 as shown in Figure 2.Connect front fork 5 and stand body 3 with bolt of rear end plate 21, front fork 5 has a step k with the junction of stand body 3, and as previously mentioned, the coupler draft gear initial tension of spring is up to 600-800KN, when high pressure master cylinder 6 started, step K can avoid bolt 21 to bear shearing force.And avoid front fork 5 impaired.

The structure of hoist cylinder 4 as shown in Figure 3, its architectural feature is: an aperture I is arranged on the big piston bar 20, an aperture J is arranged on the small piston rod 19, and two rod chamber B, C share an oil circuit T, utilize two aperture I, J on the piston rod to come the fuel feeding and the oil extraction of automatic guidance rod chamber.

When Working gantry 2 in uphill process, high pressure oil enters rodless cavity A through below hydraulic fluid port H, promptly act on the bottom of big piston 17 and valve piston 16, promoting large and small piston rises simultaneously, at this moment, oil in the rod chamber B enters rod chamber C through the I aperture, again with the C chamber in oil together the hydraulic fluid port T in the J hole enters small piston rod 19 flow back to fuel tank 12.

When big piston 17 arrives stop, valve piston 16 is under the effect of A chamber high pressure oil, crossing the I hole continues to rise, oil in the C chamber J orifice flow of still flowing through is gone into the T hydraulic fluid port, at this moment, for big piston 17, though having passed through the I hole, the upper and lower oil pocket of piston is communicated with, because: 1.. the active area of piston bottom is greater than the active area on top; 2.. because big piston masthead portion does not act on downward load,, big piston 17 can not fall so being positioned at top dead center position all the time.

After valve piston 16 arrived stop, whole cylinder was in maximum projecting position, and uphill process finishes.

When Working gantry 2 in the decline process, high pressure oil enters through hoist cylinder top hydraulic fluid port T, enters the C chamber through the J hole, promotes valve piston 16 and moves downward, the oil the A chamber in is through oil cylinder below hydraulic fluid port H inflow fuel tank 12; At this moment because the oil in A chamber still has a part of back pressure, with above-mentioned 1., the 2. identical reason of two factors, big piston 17 still rests on top dead point, can not descend.

When valve piston 16 is crossed the bottom that the I hole arrives big piston 17, the back-up ring 22 on small piston rod 19 tops that are connected with stand body 3 stops valve piston 16 to move, and simultaneously, high pressure oil enters the B chamber through the I hole, promote big piston 17 and descend, valve piston 16 also descends with big piston 17.

When big valve piston dropped to bottom dead point, Working gantry 2 decline processes finished.

Claims

1, a kind of locomotive coupler dismounting dolly, be by car body, Working gantry, hoist cylinder, the high pressure master cylinder, hydraulic efficiency pressure system, compositions such as electric-control system, it is characterized in that: adopt integral type stand body 3 and removable front fork 5, connect front fork 5 and stand body 3 with bolt of rear end plate 21, front fork 5 has a step K with the junction of stand body 3, the side plate of stand body 3 is a whole plate together with the support 15 of high pressure master cylinder 6, hoist cylinder 4 adopts the double acting telescoping cylinder, cylinder body 18 is installed on the car body 1 by platform 9 slidably, the top of small piston rod 19 is connected with stand body 3 with back-up ring 22, two rod chamber B of hoist cylinder 4, C share an oil circuit T, an aperture I is arranged on the small piston rod 19, an aperture J is arranged on the big piston bar 20.