DE1455859C - Adjustable hydraulic shock absorber for vehicles, especially armored vehicles - Google Patents

Description

3 4

externally toothed control disk 11 consists. This adjusting opening cross-section of the control member. Control disk is provided with passage openings 12, which makes it possible to reduce the effect of the shock absorber The hole pattern is identical to that of the cylinder bottoms and corresponds to the respective requirements. With the interposition of a loading point. The bushing is used for normal road travel 13, the control disk 11 is rotatable on the 5 flow openings 12 and 22 of the control member with the Piston rod 6 supported. The flow openings 10 required for control have a continuous channel, This twist is exerted from the outside by means of a helix, so that due to the almost unresisted at 14, a pivot shaft 15 and a pressure flow on it, a minimal damping occurs, fixed gear 16 initiated. When driving off-road, this can be achieved by reducing the size of the gearbox in a corresponding extension io step cross section is a hardness adapted to the terrain Slider housing 9 housed. In the different attenuation can be achieved. When driving off-road Over housing 9 is also a device for leakage, namely that given by the suspension oil readjustment provided. It consists of one. Cushioning is no longer off to the vehicle in one Pipe socket 17 to hold the position adapted to the insert by a spring-loaded ball. For the Pressure relief valve 18 is closed. A valve chamber 15 combat use and specially designed for shooting are the 19 is behind the ball pressure relief valve through a shock absorber by closing the passage hole To block 20 channels completely with a chamber 21 of the control member, d. i.e., a compression of the in connection. Vehicle when stopping to shoot or when

In Fig. 2 is another version of the control shooting while driving is in this way

organs shown, in which between the DurchflußöfE- 20 prevents, and there are no alignment errors or delays

openings 10 of the cylinder bottoms one or more with stanchions due to the compression of the vehicle.

corresponding flow openings 22 provided The changing of the passage cross-section takes place,

Rotary valve 23 in the interior of the valve housing 9 as shown in FIG. 1 or 2 can be seen by turning

are pivotably guided. The two rotary slides of the control disk 11 and the rotary slide 23

wear on their upward extension 25 twisting movement is, as can be seen, over the each

each a gear 24, with one of the two respective adjustment gears and the associated

Gears initiated a lever initiating the control movement. The adjustment can be done here by hand

25 is connected. take place, but it is just as well a

In the event of a deflection, the automatic adjustment to be damped is possible,
movement via the operating rod 1 into the. Shock 30 The readjustment of the lost leak damper initiated. As a result, the oil in the cylinder oil takes place via the pipe socket 17 from the ball pressure relief valve 18 of FIG. 2 and the pipe socket 17 from the cylinder 3 which is closed, each of which is under negative pressure. Through this pressure difference between the cylinder pressure standing cylinder chamber forms a gentle 2 and 3, the fluid flows through the small gap between the cylinder base and control flow openings 10 and the respective released 35 organ, so that the negative pressure is also applied to the opening cross section of the control organ Zy interior of the valve body can transfer, linder in the other. This liquid transfer If there is no liquid, the ball overpressure dampers is then opened in a known manner, the spring movement valve 18, and the amount to compensate for the vehicle. The damping force results from the necessary fluid can flow in,
from the pressure difference that occurs and determined 40 For logistical reasons and for easy repairs, firstly due to the spring travel described by the wheel, the two cylinders and the two pistons and the spring deflection are identical. In the event of damage to the speed between the two or excessive wear and tear, the amount of liquid exceeding each cylinder can be exchanged while maintaining the per unit of time and secondly by the optional 45 remaining shock absorber parts.

1 sheet of drawings

Claims (4)

1 2 Hydraulic shock absorbers are also known, with claims: those of the fluid exchange between two damper chambers for the purpose of blocking the damper and 1. Adjustable hydraulic shock absorber for locking the suspension, e.g. when launching a Vehicles, especially armored vehicles with 5 guns, can be completely blocked (deutzwei utility model 1740 678 and German pavcr-bonded by a piston rod Pistons of the same diameter, the tentschrift 282 395). In two mutually coaxial with hydraulic fluids, it is also known for shock absorbers with two cylinders filled with coaxiality that they can be displaced; these are in a valve housing with through-hole (French patent specification 1 008 986).
! Lußöfrniingen, -whose cross-section by means of a. It is also known to be adjustable from the outside in the case of adjustable hydraulic shock control slides, known from dampers, a double-walled piston to be used as a slider housing, which means that the two pistons open the cylinder disc, which is open on the side facing away from the slide and acts as a control slide, is provided as a control slide and sits on a rod penetrating the hollow piston (2 and 3) and the two pistons (4 and 5) and is designed to be interchangeable with one another and is adjustable from the outside (French patent for .sich are releasably attached. 1249 681). 2. Shock absorber according to claim 1, wherein the 20 It is also further known, two damper pistons To design control slide by means of a gear drive from completely the same (USA.-Patent 2 671 536 externally adjustable, characterized in that and German Auslegeschrift 1 032 038). the valve housing (9) in a known The invention specified in claim 1 is the Way is double-walled and between the task is based on designing the shock absorber so, both walls as a spool a rotatable 25 that it can be replaced with small spare parts in case of damage Has control disc (11), which can be easily repaired with intervening or wear. circuit of a bearing bush (13) on the piston by the in the characterizing part of claim 1 rod (6) is mounted and on its outer renamed solvent, the advantage is achieved that Fang bears a tooth pitch on which the gear drive in the event of damage or excessive (Gear 16, pivoting wheel 15 and lever 14) 30 wear the respective part while maintaining it attacks. . the other shock absorber parts can be easily replaced 3. Shock absorber according to claim 1, wherein the can. Control slide as having a diametrical through- Two embodiments of the invention are shown in FIG Piston-shaped rotary valve provided with a flow opening is shown in the drawings, namely shows
bcr, characterized in that 35 Fig. 1 shows a longitudinal section through a joint in the valve housing (9) several mutually parallel dampers with a centrally located, externally connected rotary valve (23) provided with toothing,. 4. Shock absorber according to claims 1 and 2 F i g. 2 a longitudinal section through a differently or 1 and 3, characterized in that the guided shock absorbers also have both in the door wall Cylinders (2 and 3) in per se known 40 the rotary piston. Way screwed into the valve housing (9). In a vehicle, not shown, the to are. damping spring movement via an actuation rod 1 introduced into the double-acting shock absorber. This shock absorber consists of two axially 45 lying and provided with a cooling jacket or cooling fins cylinders 2 and 3, in which two Pistons 4 and 5 and guided by a piston In off-road vehicles, especially armored combat rod 6, are frictionally connected to one another. dare is a different damping for the Slrassenfahrt The two pistons are in a known way with Mefung required than for driving off-road. Outside 50 TaU piston rings sealed. The two pistons 4 The suspension on armored vehicles should be over and 5 are of the same for logistical reasons the shock absorber, e.g. B. for shooting, completely blocked shape and are each made by a tapered piece as well can be. a screw connection is held on the piston rod 6. It is a shock absorber of the generic term to The two cylinders, 2 and 3 are on top of each other Spruchs 1 mentioned genus is known in which the 55 facing side by cylinder bottoms 7 and 8 vonbcidcn one-piece interconnected cylinder separated from each other. The two cylinders 2 and 3 are in screwed pressure-tight through a transverse wall firmly connected to this and a valve housing 9, in the two pistons are subdivided into four chambers, this valve housing 9 is in the respective through hole and the flow cross-section for the passage outlet cross-section released: control element guided, the damper fluid through the transverse wall via a 60 The two cylinder bottoms 7 and 8 have Durchflußz. B. by means of a pinion adjustable rotary slide openings 10, which with the corresponding opener set by hand. The disadvantage here is that the openings of the control member cross-sectionally overindie both cylinders agree with each other in one piece. The two cylinder bottoms and the slide and the pistons are neither of the same design nor are they individually interchangeable from the piston rod 6 are. A repair and the necessary 65 sets, which are carried out pressure-tight by sealing elements Lent spare parts inventory is therefore for a combat is. Vehicle too expensive (Austrian patent specification The control unit can be designed in different ways. . 179 217). :: ./ " In FIG. 1, a control element is shown