FI64772C - TRANSPORTAPPARAT - Google Patents

Description

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(32) (33) (31) Privilege claimed - Begird prlorltet 13.10.77

Sweden-Sweden (SE) 7711520-2 (71) (72) Tore Wilhelmsson, Häkansdal 10, S-U17 H Gothenburg,

The present invention relates to a conveying device comprising a treadmill and a runner moving along it, a plurality of treads distributed along and along the tracks. Sten Lundström, Centigatan 12, S-502 17 Bor & s, Sweden-Sweden (SE) directional pressure medium driven piston-cylinder units, one end of which is supported by a fixed bracket and the other end of which is releasably connectable to the runner.

A conveying device as described above is known, for example, from Swedish patent publication 367,792. However, this known hardware solution requires a relatively elongated runner. In addition, the feed piston of a known device must be retracted without performing any work step between each stroke, which means that the runner must be stationary during this retraction movement.

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The main object of the invention is to avoid the above-mentioned disadvantages and to provide a device as mentioned above, in which the transfer of the runner is achieved by simple and relatively low-cost means. In addition, it has been desired to be able to use a very short runner so that the longest possible track length in use can be utilized. In addition, continuous movement is desired from the runner while being held firmly throughout the transport journey.

This object is achieved by a conveying device according to the invention, characterized by means for alternatively connecting said second end of the piston-cylinder units to a runner so that at least one of the piston-cylinder units is continuously engaged with the runner, the means for connecting the piston-cylinder units to the runner comprising control means from the degree of elongation of the cylinder units cause their gripping head to move in the transverse direction of the piston-cylinder units towards and away from the gripper portion of the runner.

Figure 1 shows a perspective view of a transport device according to the invention, which is equipped with a truck for transporting containers.

Figure 2 shows the same vehicle when loading a container which will be transported by it.

Fig. 3 shows the same vehicle according to Fig. 2, with the container for transport being lifted into the vehicle.

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Figure 4 shows details of the container and the devices for lifting it to and from the vehicle during transport.

Figure 5 shows an end view of the front end of the container.

Figure 6 shows something similar to Figure 4 in a slightly larger size.

Figure 7 shows a top view of devices made according to the invention for the longitudinal transfer of a load carried by a vehicle.

Fig. 8 shows a view similar to Fig. 7 in a partial X-ray perspective.

Fig. 9 is a schematic side view of the longitudinal transfer device shown in Figs. 7 and 8.

Fig. 10 shows a corresponding view with the longitudinal transfer device in the second state.

Figure 11 shows the same transfer device in the third state.

Figure 12 shows a detail according to an alternative embodiment of a transport device according to the invention.

Fig. 13 schematically shows the detail illustrated in Fig. 12 when it is connected to the transport device at the first workstation.

Figure 14 shows the same detail at the second workstation.

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The conveying device made according to the invention is shown in the drawings as applied to the vehicle of a vehicle intended for the transport of containers. However, it will be appreciated that the transport device as defined in the claims may also be used in other contexts. In Figs. 1 to 3, reference numeral 1 denotes a container transport vehicle in its entirety, on which two mutually parallel running beams 3 are additionally placed on the longitudinal frame beams 2, which form a running track for a runner 4 to be moved along it. In the illustrated embodiment, the runner 4 supports a post 5, which in turn supports a lift unit 6 which is movably raised and lowered, which is movably guided in the transverse direction of the vehicle by means of two spaced guide rails 7. The lifting movement of the lifting unit is effected by means of a lever lever 8, which is a telescopic piston-cylinder unit. The lifting unit and its details will be explained in more detail in the description below. The running rails 3 consist, as can be best seen in Fig. 7, of two U-ps with flanges turned towards each other S. The inner surfaces of the flanges of the U-beams form an effective guide for the guide / several running rollers 9, which are rotatably supported by supports 10 arranged on the underside of the runner 4, thus cooperating with the running rollers 9, the diameter of which corresponds mainly to the distance between the flanges laterally and vertically. Reference numeral 11 denotes the rear piston-cylinder unit and reference numeral 12 denotes the corresponding front piston-cylinder unit. The cylinder body 11a of the rear piston-cylinder unit is mounted on the rear cross-member 13 of the frame to which the running rails 3 belong. The rear bearing is indicated by reference numeral 14 and forms a transverse joint of the vehicle chassis so that the piston-cylinder unit can be rotated vertically. The piston rod of the rear piston-cylinder unit is indicated by reference numeral 11b. Similarly, the front piston-cylinder unit is pivotally mounted on the frame via a bearing 15. The cylinder body of the front piston-cylinder unit is denoted by reference numeral 12a and its piston rod is denoted by reference numeral 12b. At the free rear end of the piston rod 12b there is a thickening 16 through which the shaft 17 passes in the transverse direction. a corresponding cam cam 21 is arranged on the sides. The front cam rails 20 are bevelled at the rear so as to form an inclined end edge 20a. The transverse pins 17 and 19 of the respective piston-cylinder units are so long that they extend laterally over the cam rails corresponding to the distance of the part. The rear end edges 20a of the cam rails 20 are positioned so as to allow the pin 19 to fall behind the cam rails when the piston rod 11b is retracted. Similarly, the front end edges 21a are such that the pin 17 can fall down in front of them when the piston rod 12b is retracted. 20 pairs of respective cam rails; 21 on each side protrudes downwards from the runner 4 a substantially U-shaped protrusion 22, the branches 22a and 22b, which extend near or below the upper edge of the cam rails, form motion responses, i.e., limiters, cooperating with the transverse pins of the piston rods.

According to Fig. 9, the runner 4 is moving backwards, i.e. in the direction indicated by the arrow 23. In the state shown in Fig. 9, the transverse pin 19 of the piston rod 11b is located above the cam rails 20 and engages the runner's gripping protrusions 22, while the transverse pin 17 of the front piston rod 12b is in the lowered rest position. When the piston rod 11b is drawn into the cylinder 11a, moves the runner 23 in the direction of the arrow 4 to the effect that the cross pin 17 is located against the legs tartuinulkoneman 22b. When the piston-cylinder unit 11 is retracted so far that the transverse pin 17 reaches the end edge 20a of the cam rails 20, the transverse pin 19 falls down to the rest position shown in Fig. 10. The supply of pressure medium to both piston-cylinder units 11 and 12 is controlled so that the movement of the piston-cylinder unit 11 in this position ceases, while the piston-cylinder unit 12 begins its elongation movement. with it, and thus may continue to move in the direction of arrow 23, as shown in Figure 11, while poikittciis-pin 17 slides against cam 21, upper faces of the rails. The return movement of the runner is effected in the opposite way. The different piston-cylinder units in the application example shown are directed against each other and the number of them is two. Naturally, it is within the scope of the invention to fit a series comprising a larger number of 6,64772 slit-cylinder units on a conveyor track. It is possible to fit the piston-cylinder units in pairs opposite to each other in the opposite direction, as in the illustrated example, but of course it is also possible to fit all the piston-cylinder units in the same direction and in proportion to the length of the piston-cylinder units. In order to provide additional certainty that the transverse pins of the piston-cylinder units do not come out with the gripping protrusions during the runner's movement, the gripping protrusions may suitably have an alternative shape shown in Figures 12 to 14. These figures show only one gripping projection 122. both branches are indicated by reference numeral 122a respectively. 122b. The leg 122a has a latch 25 pivotally pivoted about a pivot pin 24 which is spring loaded against the position shown in Figure 12 via a tension spring 26. Fig. 13 corresponds approximately to the position of the piston rod transverse pin 17 shown in Fig. 11, while Fig. 14 corresponds to the previous position in which the transverse pin 17 slides upwards along the end surfaces 21a of the cam rails 21. During this movement, the latch 25 pivots so that the transverse pin 17 can pass into the space between the two arms 122a and 122b of the gripping projection. After the transverse pin has passed the latch 25, it again returns to the position shown in Fig. 13. This prevents the cross pin from falling too early from the grip protrusion during the runner's return movement.

Figures 1 to 3 show the transport device described above in a truck. Of course, it is possible to use this conveying device in many other contexts without departing from the basic idea of the invention. In the embodiment shown, the movement of the runner, i.e. the operation of the piston-cylinder units, is controlled by a control lever 28 arranged behind the cab 27 of the truck. The frame formed by the running rails 3 and the transverse rail 13 is releasably attached to the vehicle chassis. The guide rails 7 belonging to the column 5 consist of side-open U-profiles in which a number of impellers rotatably mounted on the lifting unit 6 run. Corresponding U-rails 29 are arranged behind the frame 3, 13. These rails form an extension of the guide rails 7 when the column 5 is in its rearmost transfer position shown in Fig. 2. In this position, the lifting unit can move down to the vicinity of the ground to receive the container 36. A piston-cylinder cylinder unit 30 is arranged in each upper outer corner of the lifting unit 6, the piston rod 31 of which is movably mounted 64772 7 on the sleeve 32 of the lifting unit 32. The free end of the piston rod 31 is bent upwards for cooperation with the front end of the container 33 When the container is lifted into the vehicle, the lifting unit 6 is lowered to the position shown in Fig. 2, where the truck is reversed against the front of the container with the lifting unit lowered so far that the piston rods 31 can pass freely under the transverse pins 33. In the extended position of the piston rods 31, the lifting unit 6 is raised to a position where the bent end portions of the piston rods extend past the transverse pins 33. To facilitate insertion, the transverse pins 33 are supported upwardly by converging stiffening ties 34 in the container. In the position now reached, the piston rods 31 are retracted, which means that the front side of the container is pressed against the lifting unit 6 and can be further raised by continuing the upward movement of the lifting unit.

When the container is raised to the level of the loading platform, the forward movement of the runner to the transfer station shown in Fig. 3 is started. To prevent the vehicle from rolling backwards, it is provided with support legs 35 arranged on both sides. The various power units, i.e. the cylinders of the support legs 35, the power cylinders for moving the runner 4, the power cylinders 8 for the movement of the lifting unit 6 and the coupling units 30

The invention is not limited to the device described as an example above, but this may be varied in detail within the scope of the following claims without departing from the basic idea of the invention.

Claims (4)

A conveying device comprising a running track and a collector (4) moving along it, a plurality of pressure-driven piston-cylinder units (11; 12) distributed along and oriented along the track, one end of which is supported by a fixed bracket (14; 15) and the other end ( 16, 18) is releasably connectable to the runner (4), characterized by means (20; 21) known per se for alternately connecting said second end (16; 18) of the piston-cylinder units (11; 12) to the runner (4) so that that at least one of the piston-cylinder units (11; 12) is continuously engaged with the runner (4), the means (20; 21) for connecting the piston-cylinder units (11; 12) to the runner (4) comprising control means (20; 21) depending on the degree of elongation of the piston-cylinder units (11; 12) cause their gripping head (16; 18) to move in the transverse direction of the piston-cylinder units (11; 12) towards and away from the gripping part (22) of the runner (4). Conveying device according to claim 1, wherein the runner (4) has projections (22a, 22b) cooperating with the gripping head parts (17; 19) of the piston-cylinder units (11; 12), characterized in that the guide members (20; 21) form a treadmill along the cam rails (20; 21) extending against which said gripping head parts (17; 19) pass, the height of the cam rails determining the transverse position of the gripping head parts. Transport device according to claim 2, wherein the gripping parts (16; 18) of the piston-cylinder units (11; 12) have transverse gripping pins (17; 19) which act in response together with gripping projections (22a, 22b) arranged on the runner (4), characterized in that the cam rails (20, 21) are arranged in pairs and the cam rails belonging to each pair support their own end part on each side of the gripping pin (16; 18). Transport device according to one of the preceding claims, characterized in that the piston-cylinder units (11; 12) are directed in pairs towards each other, i.e. said fixed fasteners (14; 15) are located at the distal ends of the piston-cylinder units (11; 12). .