JPH0248784B2 - SUISHINRYOKUHATSUSEISOCHOCHENRINKU - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a chain link for a propulsive force generating device that generates propulsive force by converting rotational motion into linear motion.

(Prior Art) The present inventor has developed a finned roller body having a circumferential disc fin with a threaded cross-sectional shape, and a threaded roller body having a threaded pitch that matches the fin pitch of the finned roller body. A combined thrust generator has been proposed.

This propulsion force generating device consists of a plurality of roller bodies with fins arranged in series on a concentric line within the movement range of a movable body such as a trolley, each roller body being supported by a bearing so that it can rotate independently. A screw roller body that meshes with the finned roller body is attached to the body,
By connecting this screw roller body to a rotary drive device and rotating it, the rotation of the screw roller body is transmitted to the finned roller body, and both roller bodies rotate together, and the rotation of the screw roller body is caused by the fins. In addition to forcing the roller body to rotate, a propulsive force parallel to the axis is simultaneously generated to move the movable body.

However, in the above-mentioned propulsion generating device,
The movable body is capable of moving any required distance where the finned roller body is installed, has no limitation on the moving distance, and has a simple structure and high versatility.

(Problem to be Solved by the Invention) However, as described above, the structures of the finned roller body and the screw roller body are such that each roller body is supported by a bearing, so the roller body on the movable body side is While it is sufficient to have an effective length sufficient to fulfill its function, the fixed roller body is considered to be a kind of rail due to its function, so it naturally determines the distance traveled by the moving body. You will need something long.

Therefore, this fixed side roller body is a unit in which a fixed length roller body with a limited bearing spacing within the allowable range of rigidity strength is supported by bearings, and is installed continuously while aligning the center of the roller body. I have to.

In this case, if the fixed roller bodies are installed on a flat horizontal surface, it is relatively easy to mount them in series while aligning the centers of each roller body in multiple units; When it comes to attaching a plurality of roller bodies while aligning their centers in a continuous manner in the vertical direction, the work is extremely troublesome compared to work on a horizontal part.

This invention has been made in view of the above points, and when a propulsive force generating device consisting of a combination of a finned roller body and a threaded roller body is used for a vertical propulsion device, the fixed side roller body is made into a chain style, its ends and intermediate parts are arbitrarily fixed, and a moving object such as a lift truck can be moved and operated along this chain style roller body,
The purpose of the present invention is to provide a link chain for a propulsion generating device that greatly facilitates equipment installation work.

(Means for Solving the Problems) The gist of the present invention for achieving the above object is to generate thrust by combining a finned roller body and a threaded roller body meshing with the finned roller body. In the device, the finned roller body has a plurality of disk fins arranged around it to form a short size, these two are attached to a link bracket in parallel to form a roller body link, and the roller body link is attached to a link plate. There is provided a link chain for a propulsion force generating device, characterized in that the links are connected alternately in series.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

Fig. 1 is a partial side view of a link chain, Fig. 2 is a partial front view of a device to which the link chain of this invention is applied, Fig. 3 is a side view of the same, and Fig. 4 is Fig. 3 a-a.
FIG.

In the figure, 1 indicates the entire link chain, and this link chain 1 includes two short finned roller bodies 3 each having a plurality of disc fins 3a circumferentially arranged at a predetermined interval in the axial direction. The shafts 4 are arranged parallel to each other at intervals, and the shafts 4 are attached to link brackets 5 to constitute roller body links 2, and the roller body links 2 are alternately joined by link plates 6.

In addition, 7 in the figure is a disc spring interposed in the bearing part of the roller body 3 with fins, and urges the roller body 3 in a certain direction.

Reference numeral 8 denotes a screw roller body to be combined with the link chain 1. These two roller bodies are arranged on both sides of the link chain 1, are meshed with each other so as to sandwich the link chain 1 from both sides, and are supported by bearings 9. 6, one of the roller body threads 8a
is a right-handed thread, and the thread 8b of the other roller body is a left-handed thread, and its length is at least as long as the two roller body links 2 in the longitudinal direction of the link chain 1.
The length is set to mesh with the finned roller body 3 so that the fin tips of the disc fins 3a of the finned roller body 3 mesh accurately with the threads 8a and 8b of this screw roller body.

(effect) Next, the operation of the above configuration will be explained.

A link chain 1 is vertically installed to a required length in a vertically moving range of a vertically moving body 10 such as a lift truck.

The bearings 9 of the two screw roller bodies 8 sandwiched from both sides of the link chain 1 installed in the vertical direction are attached to the movable body 10, and the shaft ends of both screw roller bodies 8 are connected to the universal Connected to the drive shaft 12 via the joint 11,
This drive shaft 12 is connected to a rotary drive device (not shown) for use.

Therefore, when the screw roller body 8 is rotationally driven by the drive shaft 12, the link chain 1 that meshes with the screw roller body 8 is rotated.
The movable body 10 is moved up and down along the link chain 1 by forcing the finned roller body 3 to rotate and at the same time generates a propulsive force parallel to the axis.

Since the finned roller body 3 constituting the link chain 1 is assembled in a chain style, due to dimensional constraints, it should be made as short as possible and set as small as possible to reduce the thrust load. The limit is greatly influenced by the capacity of the thrust bearing.

Therefore, it is meaningless to increase the number of fins of the finned roller body 3, and therefore, a general-purpose structure is such that it always engages with the threaded roller body 8 at two or more locations, as shown in the figure.

Further, as described above, in order to equalize the engagement conditions between the finned roller body 3 and the threaded roller body 8 at two or more locations, the disc spring 7 is interposed in the lower shaft portion of the finned roller body 3. This eliminates the meshing dimensional error of the disc fins 3a of each finned roller body 3.

(Effects) The present invention has the following effects in view of the above-mentioned structural action.

(1) By incorporating the finned roller body on the fixed side as a component of the link chain, the component parts of the link chain can be mass-produced, and the required length can be adjusted according to the conditions of use in field work. The facility can be easily assembled and installed, eliminating the need for troublesome facility work such as aligning the centers of a number of roller bodies in a series and installing the roller bodies on a fixed surface, making it easier to install the equipment. Work becomes easier.

(2) The structure of the link chain is a continuous structure that combines a steel strip with holes drilled with precise pitch accuracy and pin links, so it can be expected to have the required mechanical accuracy, and it can also be used in short form. It can be said that it is a suitable mechanical part for assembling the finned roller body.

(3) Two threaded roller bodies attached to a moving body such as a lift truck are sandwiched from both sides of the chain-type link chain, and the two threaded roller bodies are engaged with the finned roller body, so that when the moving body moves, A safe lift device can be provided in which the meshing relationship between both roller bodies is always maintained unchanged and there is no fear of disengagement.

[Brief explanation of drawings]

Fig. 1 is a partial side view of a link chain, Fig. 2 is a partial front view of a device to which the link chain of the present invention is applied, Fig. 3 is a side view of the same, and Fig. 4 is Fig. 3 a-a.
FIG. 1...Link chain, 2...Roller body link,
3... Roller body with fins, 4... Shaft, 5... Link bracket, 6... Link plate, 7... Belleville spring, 8... Screw roller body, 9... Bearing, 10...
...Mobile object, 11...Universal joint, 1
2... Drive shaft.

Claims (1)

[Claims] 1. In a thrust generating device that combines a finned roller body and a threaded roller body that meshes with the finned roller body, the finned roller body has a short shape with a plurality of disc fins surrounding it, and these two are attached to link brackets in parallel to form roller body links, and the roller body links are alternately joined in series by link plates.