Stacker guide wheel assembly with a limiting device

Abstract

The utility model belongs to the technical field of logistics storage equipment, concretely relates to a kind of stacker guide wheel assembly with limiting device including stacker main guide wheel, further include a wire rope limiting device;The wire rope limiting device includes fixed support and at least one limit guide wheel;The fixed support is fixedly installed on the stacker main body structure, and is located in the adjacent position of the stacker main guide wheel;The limit guide wheel is installed on a shaft seat by a rotating shaft;The fixed support is equipped with guide mechanism, the shaft seat cooperates with the guide mechanism, so that the shaft seat can be vertically moved relative to the fixed support;The rim of the limit guide wheel corresponds with the wire rope on the stacker main guide wheel, and by the vertical movement of the shaft seat, the rim of the limit guide wheel can be pressed and limited on the surface of the wire rope.The assembly can effectively improve the stability, safety and reliability of stacker lifting system operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of logistics and warehousing equipment, specifically relating to a stacker crane guide wheel assembly with a limit device. Background Technology

[0002] In modern logistics warehousing systems, stacker cranes are the core equipment of automated storage and retrieval systems (AS / RS), responsible for the automated storage and retrieval of goods. Their operation typically includes horizontal movement along tracks and vertical lifting of the loading platform via a wire rope traction system. In the lifting system, guide wheels, as key guiding components, support and constrain the wire ropes; their performance directly affects the stacker crane's operational stability and positioning accuracy.

[0003] However, in actual operation, the wire rope is prone to lateral swaying or longitudinal jumping due to factors such as the acceleration and deceleration impacts caused by frequent start-stop of the stacker crane, changes in cargo load, vibration of the mechanical transmission system, and the flexibility of the wire rope. When the jumping amplitude is too large, the wire rope may detach from the guide wheel groove, which not only leads to the failure of the lifting system and sudden equipment stoppage, but also reduces positioning accuracy, further causing accelerated wear of the wire rope, damage to the guide wheel and related components, and even safety hazards, resulting in serious economic losses and operational interruptions.

[0004] To address the aforementioned issues, common industry-standard protective measures include deepening the guide wheel groove or installing rigid baffles on both sides of the guide wheel. While deepening the guide wheel groove can accommodate wire rope jumping to some extent, it also significantly increases the contact area and wrap angle between the wire rope and the groove wall, leading to increased frictional resistance. This increases drive energy consumption, accelerates wire rope wear and fatigue, and shortens service life. Installing fixed baffles on both sides of the guide wheel provides physical restraint, preventing the wire rope from directly slipping out. However, continuous friction between the wire rope and the baffle can easily damage the wire rope and wear down the baffle. Furthermore, it fails to effectively attenuate jumping energy, and the continuous impact of the wire rope against the baffle can cause noise and vibration. Therefore, existing measures are insufficient to fundamentally solve the problems of wire rope jumping and slippage, and the operational stability and reliability of the lifting system still need further improvement.

[0005] This application is submitted to address the aforementioned issues. Utility Model Content

[0006] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a stacker crane guide wheel assembly with a limit device, which can effectively suppress the jumping of the wire rope, prevent it from falling out of the guide wheel groove, significantly reduce the friction and wear between the wire rope and the guide wheel, improve the stability, safety and reliability of the stacker crane lifting system, and extend the service life of the wire rope and guide wheel.

[0007] The technical solution adopted in this utility model is as follows:

[0008] This utility model provides a stacker crane wire rope anti-derailment guide wheel assembly, including a stacker crane main guide wheel 1, and a wire rope limiting device;

[0009] The wire rope limiting device includes a fixed bracket 2 and at least one limiting guide wheel 3;

[0010] The fixed bracket 2 is fixedly installed on the main structure of the stacker crane and is located near the main drive wheel 1 of the stacker crane;

[0011] The limiting guide wheel 3 is mounted on a bearing seat 5 via a rotating shaft 4;

[0012] The fixed bracket 2 is provided with a guide mechanism, and the bearing 5 cooperates with the guide mechanism so that the bearing 5 can move vertically relative to the fixed bracket 2.

[0013] The rim of the limiting guide wheel 3 corresponds to the wire rope A on the main guide wheel 1 of the stacker crane, and through the vertical movement of the bearing 5, the rim of the limiting guide wheel 3 can press against and be confined to the surface of the wire rope A.

[0014] Preferably, it further includes an elastic element 6, which is supported between the fixed bracket 2 and the shaft seat 5, and is used to continuously provide the shaft seat 5 with an elastic preload force that causes the limiting guide wheel 3 to press against the wire rope A.

[0015] Preferably, the guiding mechanism is a vertical slide groove 21 formed on the fixed bracket 2, and the bearing seat 5 forms a sliding block adapted to the slide groove 21; the elastic element 6 is a compression spring, which is housed in the slide groove 21 and supported between the top of the bearing seat 5 and the top wall of the slide groove 21, or supported between the bottom of the bearing seat 5 and the bottom wall of the slide groove 21.

[0016] Preferably, the rotating shaft 4 is connected to the bearing seat 5 via a rolling bearing.

[0017] Preferably, there is one limiting guide wheel 3, the fixed bracket 2 is located directly above the main guide wheel 1 of the stacker crane, and the rim of the limiting guide wheel 3 presses against the upper surface of the wire rope A.

[0018] Preferably, there are two limiting guide wheels 3, which are symmetrically arranged on both sides of the width direction of the wire rope A, and the rims of the two limiting guide wheels 3 press against both sides of the upper surface of the wire rope A.

[0019] Preferably, the fixed bracket 2 has mounting holes, and the fixed bracket 2 is fixed to the main structure of the stacker crane by bolts passing through the mounting holes.

[0020] Preferably, the outer edge surface of the limiting guide wheel 3 is provided with a wheel groove, which is a V-shaped groove or a U-shaped groove.

[0021] Preferably, the groove surface of the limiting guide wheel 3 is covered with a wear-resistant engineering plastic layer.

[0022] The advantages of this utility model over the prior art are as follows:

[0023] 1. This utility model, through the flexible pressing of the guide wheel under the action of the elastic element, can always constrain the vertical jumping space of the wire rope, fundamentally avoiding the risk of derailment caused by violent jumping, greatly improving the reliability and safety of the stacker crane lifting system, and reducing equipment downtime and safety accidents.

[0024] 2. This utility model transforms the sliding friction between the wire rope and the fixed baffle in the prior art into rolling friction between the limiting guide wheel and the wire rope. The limiting guide wheel can rotate flexibly with the movement of the wire rope, resulting in low frictional resistance, which significantly reduces the wear on the surface of the wire rope and also reduces the wear of the limiting guide wheel itself, effectively extending the service life of the wire rope and guide wheel assembly and reducing maintenance and replacement costs.

[0025] 3. The elastic element (such as a compression spring) described in this utility model can provide a continuous and flexible preload, which allows the limiting guide wheel to adaptively press against the wire rope. When the wire rope vibrates or jumps, the elastic structure can play a good buffering and damping role, absorb impact energy, reduce system vibration and noise, and make the stacker crane run more smoothly and quietly.

[0026] 4. The entire limiting device of this utility model is mainly composed of a fixed bracket, limiting guide wheel, shaft seat and elastic element. The structure is simple and reasonable, easy to process and manufacture. The fixed bracket can be flexibly installed on the existing structure of the stacker crane through bolts and mounting holes, without the need for complex modification of the stacker crane. It has strong applicability and is easy to install and adjust on site.

[0027] 5. The limiting guide wheel 3 of this utility model adopts a V-shaped or U-shaped wheel groove and is covered with a wear-resistant layer, which not only increases the contact and containment with the wire rope and improves the reliability of the limiting guide, but also further enhances the wear resistance. It provides two optional schemes: single wheel positive pressure and double wheel counter-pressure, which can be flexibly configured according to different working conditions and has wide adaptability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a front view of a stacker crane guide wheel assembly with a limiting device according to this utility model;

[0030] Figure 2 This is a side view of a stacker crane guide wheel assembly with a limiting device according to the present invention;

[0031] Figure 3 This is a schematic diagram showing the connection between the fixed bracket, the elastic element, and the rotating shaft.

[0032] Reference numerals in the attached drawings: 1. Stacker crane main guide wheel; 2. Fixed bracket; 21. Vertical chute; 3. Restricting guide wheel; 4. Rotating shaft; 5. Shaft seat; 6. Elastic element; A. Steel wire rope. Detailed Implementation

[0033] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0034] Example 1

[0035] Please see Figures 1 to 3 This utility model embodiment provides a stacker crane wire rope anti-derailment guide wheel assembly, the core of which is to add a set of wire rope limiting devices on the basis of the traditional stacker crane main guide wheel 1.

[0036] The wire rope limiting device mainly consists of a fixed bracket 2, a limiting guide wheel 3, a rotating shaft 4, a shaft seat 5, and an elastic element 6.

[0037] The fixed bracket 2 serves as the mounting base for the entire device. It is reliably installed on the main structure of the stacker crane (such as a column or beam) using bolts or other fasteners, and is located near the stacker crane's main drive wheel 1, either to the side or directly above it. The fixed bracket 2 is machined with a guide mechanism, namely a vertical groove 21.

[0038] It should be noted that the moving direction of the bearing seat 5 and the extending direction of the slide groove 21 in this utility model are essentially pointing towards the wire rope A, to ensure that the limiting guide wheel 3 can effectively press against the wire rope A. When the fixed bracket 2 is installed directly above the main guide wheel 1 of the stacker crane, this direction is parallel to the vertical direction; when the fixed bracket 2 is installed to the side or in other positions, this direction is inclined towards the wire rope A.

[0039] In this embodiment, the bearing seat 5 is specifically a sliding block adapted to the shape of the vertical groove 21. It is embedded in the groove 21 and can move vertically along the groove 21. The limiting guide wheel 3 is mounted on this bearing seat 5 via a rotating shaft 4. To ensure that the limiting guide wheel 3 rotates flexibly and with minimal friction, the rotating shaft 4 is connected to the bearing seat 5 via a rolling bearing (not shown in the figure).

[0040] It should be noted that the specific shape of the fixed bracket 2 is not strictly limited in this utility model. Those skilled in the art can flexibly design it according to the actual installation space and structural layout around the main drive wheel 1 of the stacker crane. The core function of the fixed bracket 2 is to provide a stable mounting base for the guide mechanism and the bearing 5, and to reliably fix them to the main structure of the stacker crane.

[0041] For example, in one embodiment, the fixed bracket 2 may be generally L-shaped, with its horizontal arm bolted to the crossbeam of the stacker crane, and its vertical arm used to set the vertical chute 21.

[0042] In another embodiment, if the installation space is limited, the fixed bracket 2 can also be designed as a straight plate with the mounting hole and the slide groove (21) and directly fixed to the side wall of the stacker or a specially set mounting seat.

[0043] Furthermore, the fixed bracket 2 can also adopt a U-shaped frame, bent plate, or other irregular structure, as long as it can meet the above installation and functional requirements. This flexible design allows the present invention to be adapted to various models of stacker cranes without requiring large-scale modifications to the main body of the stacker crane, making it highly practical.

[0044] The elastic element 6 is a compression spring in this embodiment, which is housed within the vertical groove 21. The compression spring is supported between the top of the bearing seat 5 (sliding block) and the top wall of the groove 21 (or between the bottom of the bearing seat 5 and the bottom wall of the groove 21), thereby providing a continuous downward elastic preload to the bearing seat 5.

[0045] The rim of the limiting guide wheel 3 corresponds to the wire rope A guided by the main guide wheel 1 of the stacker crane. Under the preload provided by the elastic element 6, the bearing seat 5 drives the limiting guide wheel 3 to move downward, so that its rim finally presses stably against the upper surface of the wire rope A. The groove of the limiting guide wheel 3 is preferably a V-shaped or U-shaped groove, and a wear-resistant engineering plastic layer can be applied to better accommodate the wire rope and reduce wear.

[0046] The working principle and process of this utility model are as follows:

[0047] When the stacker crane is working, the main drive wheel 1 of the stacker crane pulls the steel wire rope A. The steel wire rope limiting device of this utility model is put into operation simultaneously.

[0048] In the initial state, under the preload of the elastic element 6, the rim of the guide wheel 3 is pressed against the surface of the wire rope A, providing it with a stable initial constraint force.

[0049] When wire rope A jumps upwards due to equipment start-up / shutdown, load changes, or vibration, it pushes against the limiting guide wheel 3. The limiting guide wheel 3 transmits force to the shaft seat 5 through the rotating shaft 4, forcing the shaft seat 5 to compress the elastic element 6 and move upwards along the vertical groove 21 of the fixed bracket 2. During this process, the elastic element 6 is further compressed, and the resulting reverse force (i.e., elastic restoring force) also increases, thereby applying a stronger damping and reverse constraint force to the jumping of wire rope A, effectively suppressing its jumping amplitude and preventing it from coming out of the groove of the main guide wheel 1.

[0050] Meanwhile, since the limiting guide wheel 3 can rotate flexibly through the bearing, the friction between it and the moving wire rope A is rolling friction. The movement of the wire rope A drives the limiting guide wheel 3 to rotate in the opposite direction, thereby greatly reducing the frictional resistance and wear between the two, which is fundamentally different from the harmful sliding friction between the fixed baffle and the wire rope in the prior art.

[0051] When the jumping of wire rope A weakens or disappears, the compressed elastic element 6 releases energy, pushing the shaft seat 5 and the limiting guide wheel 3 to move down, returning to the initial pressed state, ready to cope with the next jumping.

[0052] In summary, this utility model, through the ingenious combination of "elastic clamping" and "rolling friction," simultaneously achieves the dual goals of "effective limiting" and "low wear," significantly improving the reliability of the stacker crane lifting system.

[0053] Of course, the above description is not intended to limit the present utility model, nor is the present utility model limited to the examples given above. Any changes, alterations, additions or substitutions made by those skilled in the art within the scope of the present utility model should be protected by the present utility model.

Claims

1. A stacker crane guide wheel assembly with a limiting device, comprising a stacker crane main guide wheel (1), characterized in that, It also includes a wire rope limiting device; The wire rope limiting device includes a fixed bracket (2) and at least one limiting guide wheel (3); The fixed bracket (2) is fixedly installed on the main structure of the stacker crane and is located near the main drive wheel (1) of the stacker crane; The limiting guide wheel (3) is mounted on a bearing seat (5) via a rotating shaft (4); The fixed bracket (2) is provided with a guide mechanism, and the bearing seat (5) cooperates with the guide mechanism so that the bearing seat (5) can move vertically relative to the fixed bracket (2); The rim of the limiting guide wheel (3) corresponds to the wire rope (A) on the main guide wheel (1) of the stacker crane, and through the vertical movement of the bearing seat (5), the rim of the limiting guide wheel (3) can press against and be confined to the surface of the wire rope (A).

2. The stacker crane guide wheel assembly with a limit device according to claim 1, characterized in that, It also includes an elastic element (6) supported between the fixed bracket (2) and the shaft seat (5) for continuously providing the shaft seat (5) with an elastic preload that causes the limiting guide wheel (3) to press against the wire rope (A).

3. A stacker crane guide wheel assembly with a limiting device according to claim 2, characterized in that, The guiding mechanism is a vertical slide groove (21) opened on the fixed bracket (2), and the bearing seat (5) forms a sliding block adapted to the slide groove (21); the elastic element (6) is a compression spring, which is housed in the slide groove (21) and supported between the top of the bearing seat (5) and the top wall of the slide groove (21), or supported between the bottom of the bearing seat (5) and the bottom wall of the slide groove (21).

4. A stacker crane guide wheel assembly with a limiting device according to claim 1, 2 or 3, characterized in that, The rotating shaft (4) is connected to the bearing seat (5) via a rolling bearing.

5. A stacker crane guide wheel assembly with a limiting device according to claim 1, characterized in that: The number of the limiting guide wheel (3) is one, the fixed bracket (2) is located directly above the main guide wheel (1) of the stacker, and the rim of the limiting guide wheel (3) presses against the upper surface of the wire rope (A).

6. A stacker crane guide wheel assembly with a limiting device according to claim 1, characterized in that, The number of the limiting guide wheels (3) is two, which are symmetrically arranged on both sides of the width direction of the wire rope (A). The rims of the two limiting guide wheels (3) press against both sides of the upper surface of the wire rope (A).

7. A stacker crane guide wheel assembly with a limiting device according to claim 1, characterized in that, The fixed bracket (2) has mounting holes, and the fixed bracket (2) is fixed to the main structure of the stacker by bolts passing through the mounting holes.

8. A stacker crane guide wheel assembly with a limiting device according to claim 1, characterized in that, The outer edge surface of the limiting guide wheel (3) is provided with a wheel groove, which is a V-shaped groove or a U-shaped groove.

9. A stacker crane guide wheel assembly with a limiting device according to claim 8, characterized in that, The groove surface of the limiting guide wheel (3) is covered with a wear-resistant engineering plastic layer.

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