DE2341912C2 - Garbage truck with front plate and step hoist - Google Patents

Description

3 4

formed impactable piston. This results in another piston rod of which at 11 a clamping rail 12 is particularly simple design of the control slide, which extends in the forward slide direction of its adjustable wedge depending on the pressure build-up and the displacement movements of the piston rod. the lifting press joins in. These clamping rail L. The invention furthermore preferred eimr Ausgestal- 5 is the Sumplatte8 by a located on their processing, in which the control slide and? As non-return clamping device clamped. The clamping device has a fixed jaw over one in its rest position up to the rear 13 and a movable jaw 14, the impact valve of which has fingers to push the pressure piece 16 against the force of the Rückstellfe non-return valve. In this way, when the pressure is applied to the 15, the return movement of the control clamping rail M can be pressed against the clamping release by two lowering in the displacement direction at the pump connection for the purpose of the actuating piston 17 arranged on the other. The actuation slide under the force of its spring to push up spaces 18 of the two actuating pistons 17 are never used, so that via the hydraulic parallel at 19 to a pressure booster device between vjem space of the high pressure piston 15 20 is connected.

and the pump connection also a rapid reflux F i g. 3 shows a phase of the beginning of the beauty

to the pump connection. impact by the pressure intensifier, whereby the stop

Per space of the low pressure piston is according to the circuit 19 over the space 21 of the pressure boosting

The invention with the pump connection has a high-pressure piston 22 serving as a recess on one side

Flow line connected, which with a Rückschlagven- 20 branch 25 of the pump line 26 leading channel

til is equipped. 24 is connected via this return line. The pump pressure increases

the space of the low-pressure piston during pressure relief a check valve 23 from its seat against the

sen emptied at the pump connection, after doing the force of a spring. The hydraulic fluid flows quickly

the line connection, controlled by the control valve, into the actuation spaces 18 of the two actuations is blocked again. The in this return flask 17.

Flußleituna located check valve prevents While in Fig. 3, the control slide 27 below

when the pressure is built up, the pump connection is arrested and shows the force of its spring 28 in the rest position

impact of the space of the low-pressure piston via F i g. 4 the phase of the end of the filling of the beauty

this reflux line, which is exclusively about the impact spaces 18 and thus the beginning of the The line controlled by the control valve results in 30 pressure build-up of the pump pressure. As a result of the öe-

_so n impact of the face of the piston m dem

Because of the rapid filling of the Beaufschla branch 29 of the pump connection acting part

supply spaces for the clamping actuation piston and the control slide 27, this begins under the

because of the increasing pump pressure to generate the high clamping pressure against the force of its The small amount of liquid required allows the spring 28 to be moved.

Invention for the movable clamping jaws or while in the phase of Fig ^ 4 of the beaui-

whose pressure piece the use of at least impact space 30 for the low pressure KOlDen Ji

two in the direction of displacement arranged one behind the other from branch 29 leading channel 32 still aen

Neten hydraulic actuating piston, the hydraulic control slide 27 is shut off, it is parallel to the common pressure booster 40 pressure increase in the F1 g with further lisch. 5 released uer ™ ^{e "he}

be applied. This means that at a lower pressure piston 31 is acted upon and prints the

Gain sufficiently large pressing surfaces. High pressure piston 22 due to the pifterenzaer

whose specific surface pressure in safe but in the diameter with fluid 8 ^{eI "l" e} "

can hold controllable sizes. Room 21. The hydraulic fluid! ™ ⁿ . ^ub f 'An embodiment of the invention for an at 45 24 does not flow back, since the jerk ^ ^h »

the clamping rail coupled to the lifting press is in which it is pressed onto its seat 23 'and thus

Drawing shown schematically. It shows sen is. The full high pressure is in the B ^

Fig. 1 shows a garbage truck in a longitudinal side view with supply spaces 18 of the two ^Betatl g "^ ° ^ ^e ""

cut open collecting container, effective. Do you practice extensively?

2 shows the associated top view in an appearance from the clamping pressure. the safe Klem ^ htad

" _Hn , t guaranteed to achieve the required high emissions

Fig. 3 to 7 the pressure intensifier in five multiple printouts by the lifting press9 on the inner plateS

Jp-P-pi, _a c _en to be able to transmit.

The following can be seen from the garbage truck: the drive has the lifting press 9 * «nj« ^ Jfatach

rock occurred to the vehicle wheels 2 and 3, the driver's _55, the clamping w.rd again "" Jgho

rerhaus4 and the collecting container with the decrease by the pump pressure ^ M ^

closing cover 6, which interrupts for emptying around a joint 7 at the thief * r27d * verb «d

is foldable. A contained in the cover 6 between the channel 32ί and the branch W.

Charging device is not shown because s.ch opens a jerk immediately

one of the known systems can be used against the force of its locking spring ^ ^u ™

can. The face opposite the cover 6, the liquid from the space 30 through a

SI ¹ H SSSSS

_{refilled cargo through the 6 5} flap when the cover was up.

aSSSiS S

so far

the fi g. 7 shows that one opens on its piston face located finger 37 of remote smaller diameter the check valve 23. The liquid can now flow quickly, so that the pressure plate 16 is under the force of its return springs 15 is released. The clamping device is released. The clamping rail 12 can be attached without grinding the clamping jaw of the lifting press 9 by one step.

The connection 26 of the pressure booster 20 of the clamping device arranged on the face plate 8 is connected to a pump via a movable line connection 38; the line connection 38 is therefore dragged along. The pressure intensifier is in the closest spatial connection with the actuating piston, which guarantees the shortest fluid paths.

The space on the back of the low-pressure piston 31 is constantly vented at 39.

Instead of the drawing example with a step-by-step sliding clamping rail in the longitudinal center plane of the collecting container, two fixed, at the same time serving to guide clamping rails are used, one of which on the right and one on the left

ίο is arranged and on each of which there is a lifting press with the help of a clamping device, the actuating piston of which is supported by a common pressure intensifier be acted upon according to the invention.

For this purpose 4 sheets of drawings

Claims (5)

tiv to this rail adjustable clamping device, the movable clamping jaws hydraulically Patent claims: is to be actuated. A multi-vehicle designed in this way allows it to be used and accommodated in a small amount of space 1. Garbage truck with a one end face of a simple hydraulic cylinder-piston unit Frontal as a lifting press with a stroke that only has a breaking plate, which is through a lifting press with a limited part of the total displacement, over the The stroke can be shifted step-by-step under the interchangeable- the front plate when the collecting container is full effect between a shift in displacement direction for ejecting the charge, device extending clamping rail and a relative be firmly attached to this rail adjustable Klemmvor- sammeibehältraumes, wherein direction, the movable jaws of which are directly coupled to the faceplate is to be operated hydraulically, marked Hubpressc with the help of the clamping device under by an upstream hydraulic 15 gradual displacement on the clamping rail from pressure booster (20), in which the connection is supported, or the clamping rail can be attached to the Sam- (29, 32) between the pump connection (26) and the melter container firmly supported lifting press coupled the space (30) of the low-pressure piston (31), whereby the face plate with the help of the clamping front through a control slide (27) can be shut off in the direction of the gradually shifting which is clamped against the force of a spring (28) by ao clamping rail. to open the pressure of the pump connection (26) In the previously known designs of this type is, and in which the pump connection (26) (CH-PS 403 629) is the actuation of the movement limit the space (21) of the high pressure piston (22) chen clamping jaw through a mixed hydraulic a line (24, 25) is connected, the Lisch-kinematic multi-link chain. According to the is equipped with a check valve (23), 25 knowledge underlying the invention wherein the space (21) of the high pressure piston (22) thereby the mechanical link parts and their bearings with the impingement space (18) one of such a high load and specific surface clamping jaws (14) load-bearing actuating piston exposed to pressure that they only under constant war- (17) connected is. maintenance and lubrication remain functional and only 2. Garbage truck according to claim 1, characterized in that they have a moderate service life, especially if indicates that the control slide (27) should be limited in terms of its size hydraulically actuated piston len, which is wünausge formed for reasons of space saving is. is worth seeing. 3. Garbage truck according to claim 1 or 2, since the object of the invention is to avoid the characterized in that the control slide 35 mentioned disadvantages for the clamping device (27) and the check valve (23) to create purely hydraulic actuation for one another, which are opposite one another and the control slide (27) on the one hand a quick adjustment movement and on the other hand in its rest position up to the check valve the exercise of sufficient high pressure with (23) reaching finger (37) for pushing a pump pressure of considerably smaller size Having check valve. 40 and with a small amount of liquid. 4. Garbage truck according to one of claims 1 The solution to this problem is according to the Erfinbis 3, characterized in that the space manure by an upstream hydraulic (30) of the low-pressure piston (31) marked with the pump pressure intensifier, in which the Verpen connection (26) via a return line (35) connection between the pump connection and the connected to a check valve 45 space of the low pressure piston through a control (33) is equipped. slide is lockable, which against the force eini 5. Garbage truck according to one of claims 1 to spring by the pressure of the pump connection to 4, characterized in that it is open, and in which, furthermore, the pump connection movable jaws (14) or its with the space of the high pressure piston through a Pressure piece (16) is connected at least two in displacement 50 line, which with a Rückschlagvenrichtung hydraulic til arranged one behind the other, the space of the high-pressure actuating piston (17) are provided, the piston with the impingement space of a den hydraulically parallel to the common pressure clamping jaws supporting actuating piston verbuntransiter (20) can be applied. that is. 55 In the invention, the loading spaces of the actuating piston for the. Clamp quickly filled via the line that carries the pressure intensifier zer piston aggregate bypasses, so that a quick Employment is carried out. Then builds up 60 the pressure on, is through it through until then the control spool blocked connection between the pump connection and the chamber of the lower The invention relates to a garbage truck with a pressure piston open so that the pressure transmission unit uses the end face of the refuse container space. In the line connected to the space of the high-pressure piston, which is connected by a lifting press with 65 benches, the non-return valve-limited stroke can be shifted step-by-step under a return flow to the pump connection,
jchselffekt between a shifting In development of the inventive idea is dei the clamping rail and a rela- control spool as hydraulically actuated