Stacker upper guide wheel device with shock absorption and noise reduction functions

Abstract

This invention discloses a stacker crane upper guide wheel device with shock absorption and noise reduction function, which solves the problem of how to overcome the vibration of the top clamping guide wheel of the stacker crane. A square shaft through hole (6) is provided on the left guide wheel mounting seat (4). A square shaft (7) with external thread at the top is connected in the square shaft through hole (6). A left rectangular V-shaped leaf spring (8) is connected to the square shaft. A left front wheel axle vertical connecting tube (10) is provided at the front end of the left rectangular V-shaped leaf spring (8). A left rear wheel axle vertical connecting tube (11) is provided at the rear end of the left rectangular V-shaped leaf spring (8). A left front vertical wheel axle (12) is fixedly connected in the left front wheel axle vertical connecting tube (10). A left front upper guide wheel (15) is connected at the upper end of the left front vertical wheel axle. A left front lower guide wheel (14) is connected at the lower end of the left front vertical wheel axle. This overcomes the vibration problem of the top guide wheel of the stacker crane caused by errors in the installation of the overhead rail and other factors.

Description

Technical Field

[0001] This invention relates to a stacker crane, and more particularly to an upper guide wheel device for a stacker crane with shock absorption and noise reduction functions. Background Technology

[0002] Stacker cranes operate on ground rails and overhead rails. A horizontal cantilevered mounting frame is connected to the upper crossbeam at the top of the crane. A pair of clamp-type guide wheels are mounted on the horizontal cantilevered mounting frame, and these guide wheels are connected to guide wheel brackets on the horizontal cantilevered mounting frame via rigid shafts. During the installation of the overhead rail, significant errors exist in its coaxiality and straightness. This causes the gap between the guide wheels and the overhead rail to fluctuate during the stacker crane's movement. Furthermore, the rigid contact between the overhead rail and the guide wheels results in significant vibration of the two clamp-type guide wheels, accompanied by considerable noise. This factor restricts the operating speed of the stacker crane, thereby limiting its efficiency in storing and retrieving goods. Overcoming this defect has become a research topic for those skilled in the art. Summary of the Invention

[0003] This invention provides a stacker crane upper guide wheel device with shock absorption and noise reduction functions, which solves the technical problem of how to overcome the vibration easily generated by the clamping guide wheel at the top of the stacker crane.

[0004] The present invention solves the above technical problems through the following technical solutions: A stacker crane upper guide wheel device with shock absorption and noise reduction functions includes an upper crossbeam and a top rail. A horizontal cantilever bracket is fixedly connected to the left side of the upper crossbeam, positioned directly below the top rail. A left guide wheel mounting seat and a right guide wheel mounting seat are respectively provided on the top surface of the horizontal cantilever bracket. A square shaft passes through a through hole in the left guide wheel mounting seat, through which a square shaft with external threads at its top is threaded. A left rectangular V-shaped leaf spring is connected to the square shaft. The left rectangular V-shaped leaf spring is horizontally positioned along the front-rear direction. A [missing information - likely a design element] is provided at the front end of the left rectangular V-shaped leaf spring. A left front wheel axle vertical connecting tube is provided, and a left rear wheel axle vertical connecting tube is provided at the rear end of the left rectangular V-shaped leaf spring. A left front vertical wheel axle is fixedly connected in the left front wheel axle vertical connecting tube, and a left rear vertical wheel axle is fixedly connected in the left rear wheel axle vertical connecting tube. A left front upper guide wheel is connected to the upper end of the left front vertical wheel axle, and a left front lower guide wheel is connected to the lower end of the left front vertical wheel axle. A left rear upper guide wheel is connected to the upper end of the left rear vertical wheel axle, and a left rear lower guide wheel is connected to the lower end of the left rear vertical wheel axle. The left front upper guide wheel, left front lower guide wheel, left rear upper guide wheel, and left rear lower guide wheel are all abutted against the left side of the ceiling track.

[0005] A leaf spring fixing nut is connected to the inner end of the square shaft, which fixes the left rectangular V-shaped leaf spring to the left guide wheel mounting seat. A first set screw through hole is provided on the left guide wheel mounting seat in front of the square shaft through hole, and a second set screw through hole is provided on the left guide wheel mounting seat behind the square shaft through hole. A first set screw is screwed into the first set screw through hole, and the inner end of the first set screw abuts against the left front outer vertical surface of the left rectangular V-shaped leaf spring. A second set screw is screwed into the second set screw through hole, and the inner end of the second set screw abuts against the left rear outer vertical surface of the left rectangular V-shaped leaf spring. An adjusting shim is provided between the left guide wheel mounting seat and the left rectangular V-shaped leaf spring.

[0006] A first bearing is fitted onto the front end of the left front vertical wheel axle, and the left front lower guide wheel is fitted onto the outer ring of the first bearing; an elastic washer is provided on the left front vertical wheel axle outside the first bearing.

[0007] This invention mounts the clamping wheels on both sides of the overhead rail onto rectangular V-shaped leaf springs. By adjusting the set screws and the preload of the leaf springs, the clamping wheels and the overhead rail are kept in constant contact, thus creating a flexible connection between the clamping wheels and the overhead rail. This overcomes the vibration problem of the stacker crane's top guide caused by errors in overhead rail installation and other factors, significantly reduces operating noise, and improves the efficiency of the stacker crane in storing and retrieving goods. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of the present invention from a top view. Figure 2 This is a schematic diagram of the structure of the present invention in the main viewing direction; Figure 3 This is a schematic diagram of the left front guide wheel of the present invention. Detailed Implementation

[0009] The present invention will now be described in detail with reference to the accompanying drawings: A stacker crane upper guide wheel device with vibration reduction and noise reduction functions includes an upper crossbeam 1 and a ceiling rail 2. A horizontal cantilever bracket 3 is fixedly connected to the left side of the upper crossbeam 1. The horizontal cantilever bracket 3 is located directly below the ceiling rail 2. A left guide wheel mounting seat 4 and a right guide wheel mounting seat 5 are respectively provided on the top surface of the horizontal cantilever bracket 3. The left guide wheel mounting seat 4 and the right guide wheel mounting seat 5 are symmetrically arranged on the top surface of the horizontal cantilever bracket 3 directly below the ceiling rail 2, with the ceiling rail 2 as the center line of symmetry. A square shaft passes through a through hole 6 in the middle of seat 4. A square shaft 7 with an external thread at the top is threaded through the through hole 6. A left rectangular V-shaped leaf spring 8 is connected to the square shaft 7. The left rectangular V-shaped leaf spring 8 is horizontally arranged in the front-rear direction. A left front wheel axle vertical connecting sleeve 10 is provided at the front end of the left rectangular V-shaped leaf spring 8. The left front wheel axle vertical connecting sleeve 10 can be formed by rolling up the front end plate of the left rectangular V-shaped leaf spring 8. A left rear wheel axle vertical connecting sleeve 11 is provided at the rear end of the left rectangular V-shaped leaf spring 8. A left front vertical wheel axle 12 is fixedly connected in the center of the 0 section. A left rear vertical wheel axle 13 is fixedly connected in the left rear wheel axle vertical connecting cylinder 11. A left front upper guide wheel 15 is connected to the upper end of the left front vertical wheel axle 12. A left front lower guide wheel 14 is connected to the lower end of the left front vertical wheel axle 12. A left rear upper guide wheel 23 is connected to the upper end of the left rear vertical wheel axle 13. A left rear lower guide wheel is connected to the lower end of the left rear vertical wheel axle 13. The left front upper guide wheel 15, the left front lower guide wheel 14, the left rear upper guide wheel 23, and the left rear lower guide wheel are all abutted against the left side of the ceiling track 2. The guide wheel mounting structure on the right guide wheel mounting seat 5 is exactly the same as that on the left guide wheel mounting seat 4. Under the elastic pressure of the left rectangular V-shaped leaf spring 8, the four guide wheels on the left side flexibly abut against the left side of the ceiling rail 2, realizing the elastic abutment between the top guide wheel of the stacker crane and the ceiling rail 2, thereby achieving elastic seamless rolling contact between the guide wheel and the left side of the ceiling rail 2. Under the elastic pressure of the right rectangular V-shaped leaf spring, the four guide wheels on the right side also realize the elastic abutment between the top guide wheel of the stacker crane and the ceiling rail 2. The guide wheels can be rubber-coated wheels.

[0010] A leaf spring fixing nut 9 is connected to the inner end of the square shaft 7. The leaf spring fixing nut 9 fixes the left rectangular V-shaped leaf spring 8 to the left guide wheel mounting seat 4, thus achieving a non-rotational connection of the square shaft 7. A first set screw through hole 16 is provided on the left guide wheel mounting seat 4 in front of the square shaft through hole 6, and a second set screw through hole 18 is provided on the left guide wheel mounting seat 4 behind the square shaft through hole 6. A first set screw 17 is screwed into the first set screw through hole 16, and the inner end of the first set screw 17 abuts against the left guide wheel mounting seat 4. On the left front outer side of the rectangular V-shaped leaf spring 8, a second setter 19 is screwed into the through hole 16 through which the second setter passes. The inner end of the second setter 19 abuts against the left rear outer side of the left rectangular V-shaped leaf spring 8. An adjusting shim 20 is provided between the left guide wheel mounting seat 4 and the left rectangular V-shaped leaf spring 8. The adjusting shim 20 can be used for initial positioning adjustment during installation. The elastic pressure of the rectangular V-shaped leaf spring on the guide wheel can be dynamically adjusted by the two setter screws to achieve a seamless and reliable connection between the guide wheel and the ceiling rail.

[0011] A first bearing 21 is fitted onto the front end of the left front vertical wheel axle 12, and the left front lower guide wheel 14 is fitted onto the outer ring of the first bearing 21; an elastic washer 22 is provided on the left front vertical wheel axle 12 outside the first bearing 21 to ensure that the guide wheel does not move axially.

Claims

1. A stacker crane upper guide wheel device with shock absorption and noise reduction function, comprising a stacker crane upper beam (1) and a ceiling rail (2), wherein a horizontal cantilever bracket (3) is fixedly connected to the left side of the stacker crane upper beam (1), the horizontal cantilever bracket (3) is located directly below the ceiling rail (2), and a left guide wheel mounting seat (4) and a right guide wheel mounting seat (5) are respectively provided on the top surface of the horizontal cantilever bracket (3), characterized in that, A square shaft through hole (6) is provided on the left guide wheel mounting base (4). A square shaft (7) with an external thread at the top is connected through the square shaft through hole (6). A left rectangular V-shaped leaf spring (8) is connected to the square shaft (7). The left rectangular V-shaped leaf spring (8) is horizontally arranged in the front-rear direction. A left front wheel axle vertical connecting tube (10) is provided at the front end of the left rectangular V-shaped leaf spring (8). A left rear wheel axle vertical connecting tube (11) is provided at the rear end of the left rectangular V-shaped leaf spring (8). A left front vertical wheel axle is fixedly connected in the left front wheel axle vertical connecting tube (10). 12) A left rear vertical wheel axle (13) is fixedly connected in the left rear wheel axle vertical connecting tube (11). A left front upper guide wheel (15) is connected to the upper end of the left front vertical wheel axle (12). A left front lower guide wheel (14) is connected to the lower end of the left front vertical wheel axle (12). A left rear upper guide wheel (23) is connected to the upper end of the left rear vertical wheel axle (13). A left rear lower guide wheel is connected to the lower end of the left rear vertical wheel axle (13). The left front upper guide wheel (15), the left front lower guide wheel (14), the left rear upper guide wheel (23) and the left rear lower guide wheel are all abutted on the left side of the ceiling rail (2).

2. The stacker crane upper guide wheel device with shock absorption and noise reduction function according to claim 1, characterized in that, A leaf spring fixing nut (9) is connected to the inner end of the square shaft (7). The leaf spring fixing nut (9) fixes the left rectangular V-shaped leaf spring (8) to the left guide wheel mounting seat (4). A first set screw through hole (16) is provided on the left guide wheel mounting seat (4) in front of the square shaft through hole (6). A second set screw through hole (18) is provided on the left guide wheel mounting seat (4) behind the square shaft through hole (6). A first set screw (17) is screwed into the first set screw through hole (16). The inner end of the first set screw (17) abuts against the left front outer vertical surface of the left rectangular V-shaped leaf spring (8). A second set screw (19) is screwed into the second set screw through hole (16). The inner end of the second set screw (19) abuts against the left rear outer vertical surface of the left rectangular V-shaped leaf spring (8). An adjusting shim (20) is provided between the left guide wheel mounting seat (4) and the left rectangular V-shaped leaf spring (8).

3. A stacker crane upper guide wheel device with shock absorption and noise reduction function according to claim 1 or 2, characterized in that, A first bearing (21) is fitted onto the front end of the left front vertical wheel axle (12), and a left front lower guide wheel (14) is fitted onto the outer ring of the first bearing (21); an elastic washer (22) is provided on the left front vertical wheel axle (12) outside the first bearing (21).

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