FI92666C - Flexible switch - Google Patents

Description

92666

FLEXIBLE SWITCH

The invention relates to a flexible coupling by means of which accessories or various pallets are attached to the body of the vehicle. The switch allows quick attachment of several different pallets to the vehicle body.

Enneståån is a known clutch with no flexibility and several of which are placed in the body of the vehicle. The accessory or palleter, which is placed on the frame, has mating counterparts suitable for the coupling. When there are several, usually six, couplings, the platform and the vehicle body attached to them become a rigid whole. When the loaded platform is thus attached to the vehicle body, in the event of a body stress, such as a torsion on an uneven surface, one or more clutches inevitably develop a high stress due to the platform having its own body which tends to remain straight. Rigid couplings either do not withstand this or else there are stresses in the platform that can remain permanent. The milder installation of the Tålld platform on the Switches located on the vehicle body can become cumbersome. The stiffness of the platform or platform frame is always lower than that of the vehicle frame.

German publications 2610001, 2930695 and 3640323 disclose couplings which allow the platform to flex downwards and upwards. In these, the resilience cannot be switched off, i.e. the joint can be locked so that at least the resilience in the other direction is prevented.

The flexible coupling according to the invention avoids these drawbacks and the invention is characterized by what is stated in the characterizing parts of the appended claims.

The most important advantages of the invention are that the body of the vehicle can be distorted under stress without the same stress being transferred to the platform body. Flexible couplings decisively reduce the forces acting on the platform frame via the couplings.

When the body and parts of the flexible coupling are located below the coupling surface, the structure of the coupling does not require the pallet to be raised, but the bottom of the load compartment can still be at the same height as when using rigid couplings. The elastic locking mechanism in the coupling makes the couplings or part of them stiff, if necessary, which is the case, for example, in the event of a platform tipping.

In the following, the invention will be explained in more detail with reference to the accompanying drawing, in which

Figure 1 shows a coupling attached to the vehicle body.

Figure 2 shows a side view of the flexible coupling locked. Figure 3 shows another flexible coupling from the side.

In Fig. 1, a fixed body part 2 of a flexible coupling, which is bent from a plate, is fixed to the body 1 of the vehicle. In addition, two vertical spacers 7 with elongated holes are welded to the middle sections of the body part. The movable body part consists of a plate 3 acting as a coupling surface and vertical plates 6 connected to its edges. Attached to the plate 3 is a conical pin 4 acting as a coupling member with a wedge hole 5. The flexible rubber pads 9 rest on the lower surface of the plate 2 bent at the top. On the lower surface of the rubber pads there are support plates 10, which are connected to the plate 3 by rods or screws passed through the rubber cushions 3. When the conical pin 4 is pulled upwards, the rubber cushions 9 are then pressed against the fixed plate 2 by means of plates 10 with rods or screws. The height of the coupling surface, i.e. the height of the plate 3 during the installation phase, is preferably chosen slightly below the upper surface of the frame beam 1, a suitable difference being about 8 mm. The distance s shown in the figure thus also becomes 8 mm when the fastening is performed by tightening the wedge piece 13 in place. The switch can then move downwards by said 8 mm. Especially when using a rubber mat between the frame beam 1 and the platform frame 12.

The figure shows a part of the pallet body 12 to be fastened to the body. A counter part 11 with a hole for the conical pin 4 is welded to the body of the pallet. After the installation of the platform frame, the locking is performed by a wedge pin 13, the holding of which is ensured by a pin 14. The figure also shows the locking latch of the flexible coupling, with which the spring is disengaged. The latch includes a shaft 15, a support piece 16 and an operating lever 17.

i 92666 3

Figure 2 shows the flexible switch in the side locked position.

The latch 15 is rotated so that the support piece 16 is vertical, preventing the shaft 15 from rising upwards. When the shaft 15 is placed in the holes of the side plates 6, the side plates cannot be raised either. At the same time, the rise of the plate 3 and the conical pin 4 attached to it is prevented. The locking of the latch in this position is performed by means of a lever 19 at the end of the shaft and a spring pin 14. By rotating the locking shaft 15, e.g., half a turn, the clutch becomes flexible. The shaft 15 is able to rise the distance allowed by the elongate holes in the plates 7, which is the maximum elastic distance of the clutch. The figure shows the screws 18 which are used to transmit the elastic force from the rubber pads 9 to the clutch plate 3. The body plate 2 has free holes for the screws 18. The lower end of the rubber pads is used as a support plate 10.

Figure 3 shows another embodiment of a flexible switch with a hook part 21. The fixed body, parts 24 and 28 of the coupling are e.g. bolted to the vehicle body beam 1. The rubber cushions 26 are inside the body and between them there is a support plate 25 and below it a thick support plate 31. A side piece 23 is welded to each edge of the support plate 31. shown in dashed lines. Below the support plate 31, a square tube 27 is welded, which prevents downward movement on the bottom of the body 28 by the Tor mamma. The square tube 27 also holds the support plate 31 and the side pieces in the direction. For this purpose, a support piece 30 has also been added. The hook hook 21 grips the profile 20 of the transfer platform mounted on the body of the vehicle and prevents its unnecessary rise. When the platform is tilted, the lock must be opened. The hook 21 is locked by pushing the pin into the hole 22, thus preventing the hook from opening. At the top of the side piece 23 there is a force transmission surface 32 on which the profile 20 normally rests. The coupling springs upwards, in which case the rubber pads are pressed against the fixed body 28 by the support plate 31. The coupling has a structural height because the transfer beam 1 is first topped by a transfer device body and then by the transfer pallet body itself, from which profile 20 is described. Instead of pallets, cranes, silos or other accessories can also be attached to the vehicle body with flexible couplings. Rubber pads can be replaced with compression springs.

Claims (3)

4,92666 1- Flexible coupling for coupling and / or locking a vehicle accessory or a pallet on a vehicle chassis or track beam (1), in which coupling the coupling / locking force is transmitted by a special coupling joint (3), (32) and locking members (4,13) , (21) and wherein the resilient members (9), (26) are located inside the coupling body (2, 2), (24, 28) below the coupling connection (3), (32), characterized in that the coupling. includes an on and off mechanism (15, 16, 17) for preventing resilient movement of the switch, the mechanism having a resilient support member (16) movable into the trajectory of the clutch. A flexible coupling according to claim 1, characterized in that the mechanism removes the spring of the coupling upwards, i.e. pallet resilience upwards from the vehicle body (1). Flexible coupling according to Claim 1 or 2, characterized in that the locking device is a latch body (16) connected to the rotatable shaft (15), which prevents the locking element (4) from rising relative to the body (2, 7). t 92666