Walking wheel set of stacking machine

Abstract

The utility model discloses a walking wheel set of a stacking machine. The walking wheel set is used for improving the stability and the walking precision of the stacking machine. The stacking machine walking wheel set is installed on a lower cross beam of a stacking machine and comprises a motor mechanism and a movement mechanism. The motor mechanism comprises a lower cross beam rack, a motor fixing plate and a walking motor, the lower cross beam rack and the motor fixing plate are connected through a long pin, and the walking motor is fixedly connected to the motor fixing plate; the moving mechanism comprises a bearing fixing frame, a bearing and a walking wheel, the bearing is fixed to the bearing fixing frame and connected with an output shaft of the walking motor, and the walking wheel is arranged on the bearing in a sleeving mode. The walking wheel is simple in structure and low in manufacturing and maintenance difficulty, the height and angle of the walking wheel can be adjusted more conveniently, durability is improved, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of industrial automation equipment technology, specifically to a stacker crane walking wheel set, used to improve the stability and walking accuracy of the stacker crane. Background Technology

[0002] Stacker cranes are one of the key pieces of equipment in modern warehousing and logistics systems, their main function being the automated handling of goods within warehouses. The performance of a stacker crane directly impacts the efficiency and reliability of the warehousing system. In existing stacker crane designs, the wheel assembly is the core component enabling the crane's movement, and its design and manufacturing quality directly affect the crane's operational stability and precision.

[0003] For example, patent CN222064010U discloses a lightweight stacker crane traveling wheel adjustment mechanism, including: a traveling wheel, which is rotatably mounted on an axle via bearings, eliminating the use of structures such as expansion sleeves, effectively avoiding the problem of loosening between the traveling wheel and the axle, and improving the safety of use. Both ends of the axle are equipped with eccentric bushings, and the axle is fixedly mounted on the lower crossbeam through the eccentric bushings. The eccentric bushing includes a mounting plate with axle holes. The center of the axle holes is eccentrically set with the center of the mounting plate. The axle is installed in the axle holes. Several mounting holes are evenly opened along the circumference of the mounting plate. A square boss is fixed on the end face of the mounting plate away from the lower crossbeam, which makes it easy for the operator to use an adjustable wrench to rotate and adjust the eccentric bushing, facilitating the application of force and the turning of the eccentric bushing. Patent CN219360755U provides a quick-release stacker crane wheel box structure and a stacker crane, including: a wheel box body and a traveling wheel, the traveling wheel being rotatably disposed in the wheel box body; the wheel box body includes side plates, flange plates, and positioning pins, the flange plates being detachably connected to a lower crossbeam, the flange plates having positioning holes for the positioning pins to pass through, and through holes for accommodating the traveling wheel, the side plates being two pieces and fixedly disposed on the flange plates, the side plates being located on both sides of the through holes, and the traveling wheel being rotatably disposed between the two side plates. The quick-release stacker crane wheel box structure and stacker crane provided in this application have traveling wheels rotatably disposed on the side plates and detachably connected to the lower crossbeam via flange plates. When the traveling wheel fails, it can be directly replaced by removing the flange plates. Positioning is achieved during installation using positioning pins, enabling quick disassembly and rapid positioning installation. Patent CN211812332U discloses an adjustable guide wheel assembly for reducing the turning backlash of a turning stacker crane. The assembly includes a wheel box assembly, a guide wheel fixing plate, a deflector wheel assembly, an eccentric shaft, a set nut, and an adjusting washer. The guide wheel fixing plate is mounted on the bottom of the wheel box assembly. The eccentric shaft is mounted on the guide wheel fixing plate via the set nut, and an adjusting washer is installed between the set nut and the guide wheel fixing plate. The deflector wheel assembly is rotatably mounted on the eccentric shaft. The wheel box assembly can travel along a ground rail via the deflector wheel assembly. Three deflector wheel assemblies are mounted on the guide wheel fixing plate: two deflector wheel assemblies on one side of the ground rail and one deflector wheel assembly on the other side. This adjustable guide wheel assembly enables the turning stacker crane to maintain smooth straight-line movement and turning, has a stable structure that is not easily deformed, is simple to manufacture, and is easy to adjust on-site.

[0004] However, the traditional stacker crane wheel assembly design has the following problems:

[0005] Complex Structure: Traditional travel wheel sets have a complex structure, increasing the difficulty of manufacturing and maintenance. Poor Stability: Due to unreasonable structural design, the travel wheel sets are prone to vibration during high-speed operation, affecting the stability of the stacker crane. Difficult Adjustment: Adjusting and maintaining the wheel sets requires professional technicians, increasing maintenance costs. Insufficient Durability: Due to prolonged operation and frequent adjustments, the wheel sets wear out quickly, reducing the service life of the stacker crane.

[0006] To address the aforementioned issues and improve the operating efficiency and reliability of stacker cranes, it is necessary to design a new type of stacker crane travel wheel set. Summary of the Invention

[0007] Based on the shortcomings of the existing technology, such as unreasonable structural design, difficult maintenance, and short service life, the purpose of this utility model is to provide a stacker crane traveling wheel set with simple structure, good stability, and easy adjustment and maintenance, so as to improve the operating stability and accuracy of the stacker crane.

[0008] This utility model provides a stacker crane traveling wheel set, which is installed on the lower crossbeam of the stacker crane. The lower crossbeam serves as the support structure for the entire traveling wheel set and is connected to the main structure of the stacker crane. A set of traveling wheels is provided at each end of the lower crossbeam. The lower crossbeam includes an upper plate and a side plate. The stacker crane traveling wheel set includes a motor mechanism and a motion mechanism.

[0009] The motor mechanism includes a lower crossbeam frame, a motor mounting plate, and a traveling motor; the lower crossbeam frame is fixed above the upper plate of the lower crossbeam, the motor mounting plate is connected to the lower crossbeam frame by long pins, and the traveling motor is fixedly connected to the motor mounting plate;

[0010] The motion mechanism includes a bearing fixing frame, bearings, and traveling wheels. Two sets of bearing fixing frames are located on either side of the lower crossbeam side plate. Each set includes a middle fixing plate and a U-shaped fixing frame. The U-shaped fixing frames on both sides of the lower crossbeam side plate are connected by a connecting shaft. The middle fixing plate is located within the U-shaped fixing frame and connected to it via wheel adjustment bolts. The lower crossbeam side plate has a downward-facing U-shaped opening at the location of the middle fixing plate. The bearing passes through the middle fixing plate, parallel to the central axis of the connecting shaft, and is connected to the output shaft of the traveling motor. The traveling wheels are mounted on the bearings. When the traveling motor operates, it drives the bearings, which in turn drives the traveling wheels.

[0011] Furthermore, the lower crossbeam is connected to the columns and loading platform in the main structure of the stacker crane;

[0012] Furthermore, buffer pads are provided on both sides of the connection between the motor mounting plate and the long pin to ensure the stability of the walking motor during operation;

[0013] Furthermore, the connection between the lower crossbeam frame and the upper plate of the lower crossbeam is a threaded connection;

[0014] Furthermore, the walking motor and the motor mounting plate are connected by a threaded connection. In other embodiments, welding or other connection methods can be used to ensure that the walking motor is securely fixed.

[0015] Furthermore, the walking motor is an AC variable frequency motor, which features high efficiency, low noise, and long lifespan.

[0016] Furthermore, a wheel assembly expansion sleeve is provided between the traveling wheel and the bearing; the wheel assembly expansion sleeve is embedded in the traveling wheel, firmly fixing the bearing and the traveling wheel, reducing the relative movement between the two mechanical parts, and avoiding excessive wear of the workpiece. Traditional structures use a combination of spline groove and keyway or keyway and key; this structure involves mutual movement during start-up or stop, causing wear.

[0017] Furthermore, the lower crossbeam is provided with several mounting holes for fixing the lower crossbeam frame, motor mounting plate, and bearing mounting frame;

[0018] Furthermore, the bearing is a self-aligning ball bearing, which has good load-bearing capacity and operational accuracy.

[0019] Furthermore, the lower crossbeam, lower crossbeam frame, motor mounting plate, and bearing mounting frame are all made of forged materials; the wheel set adjusting bolts are made of carbon structural steel or alloy structural steel.

[0020] Furthermore, the intermediate fixing plate is provided with a plurality of oil injection holes around its perimeter, and the oil injection holes are connected to the central oil passage; lubricating oil is injected from the oil injection holes into the central oil passage of the intermediate fixing plate, and the central oil passage guides the lubricating oil onto the bearing.

[0021] Furthermore, by adjusting the height of the wheel assembly adjusting bolts, or by inserting adjusting shims between the intermediate fixing plate and the U-shaped fixing frame, the relative position of the intermediate fixing plate and the U-shaped fixing frame can be adjusted, thereby adjusting the height of the bearing and the traveling wheel to achieve the corresponding accuracy requirements; by adjusting the left and right positions of the wheel assembly adjusting bolts, or by adjusting the angle of the bearing, the angle of the bearing and the traveling wheel can be adjusted to achieve parallelism between the wheel surface and the track travel angle.

[0022] The stacker crane traveling wheel set provided by this utility model has the following advantages:

[0023] Simple structure: Simplified design reduces manufacturing and maintenance difficulty. Good stability: Optimized wheel assembly design reduces vibration during operation and improves stacker crane stability. Easy adjustment and maintenance: Adjustable wheel bolts facilitate easy height and angle adjustment, reducing maintenance costs. High durability: Optimized material selection and structural design enhance wheel assembly durability, extending stacker crane lifespan.

[0024] Lubrication of the wheel assembly is crucial for ensuring its normal operation and extending its service life. This utility model's wheel assembly design incorporates features to facilitate lubrication. Specifically, the bearing mounting frame of the wheel assembly is designed with dedicated lubrication channels (center-position oil passages) and lubrication points (oil injection holes), allowing direct lubrication of the wheel bearings. This design not only simplifies the lubrication process and reduces the workload of maintenance personnel, but also ensures effective lubrication of the bearings, reducing wear and extending their service life.

[0025] The wheel assembly expansion sleeve is a crucial component of the traveling wheel assembly. Its function is to fix the traveling wheel's position on the axle and prevent displacement during operation. This utility model's traveling wheel assembly utilizes a specially designed expansion sleeve with the following characteristics: easy installation and disassembly, requiring no complex tools and greatly simplifying maintenance; high reliability, made of high-strength materials, possessing excellent wear resistance and impact resistance, maintaining stable performance even in harsh working environments; and strong adaptability, considering different sizes and types of traveling wheels, exhibiting good versatility and adaptable to various models of stacker crane traveling wheel assemblies.

[0026] Through the above design, the stacker crane's walking wheel set of this utility model not only improves the stability and accuracy of operation, but also greatly reduces maintenance costs and improves the convenience of maintenance, thereby improving the overall efficiency and reliability of the stacker crane. Attached Figure Description

[0027] Figure 1 A front view of a stacker crane traveling wheel assembly provided in this application;

[0028] Figure 2 This application provides a detailed enlarged schematic diagram of a stacker crane traveling wheel assembly;

[0029] Figure 3 A cross-sectional schematic diagram of a stacker crane traveling wheel assembly device provided in this application at the traveling wheel (10);

[0030] Figure 4 This application provides an overall schematic diagram of a stacker crane traveling wheel assembly on the lower crossbeam;

[0031] Figure label:

[0032] 0 travel wheel set,

[0033] 1 Lower crossbeam, 1-1 Lower crossbeam top plate, 1-2 Lower crossbeam side plate;

[0034] 2. Wheel set adjusting bolts, 3. Bearing fixing frame (3-1 intermediate fixing plate, 3-2: U-shaped fixing frame), 4. Connecting shaft, 5. Lower crossbeam frame, 6. Motor fixing plate, 7. Travel motor, 8. Buffer pad, 9. Long pin, 10. Travel wheel, 11. Wheel set expansion sleeve, 12. Bearing, 13. Oil injection hole. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to specific embodiments. It should be noted that the following embodiments will help those skilled in the art to further understand this utility model, but do not limit this utility model in any way. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model. These all fall within the protection scope of this utility model.

[0036] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Example 1: A stacker crane traveling wheel set

[0038] like Figures 1-4 As shown, in this embodiment, a stacker crane traveling wheel set 0 is installed on the lower crossbeam 1 of the stacker crane. The lower crossbeam 1 is composed of an upper plate 1-1 and two side plates 1-2, and is made of 45# steel. The stacker crane traveling wheel set 0 includes a motor mechanism and a motion mechanism.

[0039] The motor mechanism consists of a lower crossbeam frame 5 fixed to the upper plate 1-1 of the lower crossbeam by threads, with a motor mounting plate 6 connected above it. The two are hinged together by long pins 9, and buffer pads 8 are provided on both sides of the pins to absorb vibration. The travel motor 7 is an AC variable frequency motor, which is fixed to the motor mounting plate 6 by bolts, forming a floating installation structure. It has the functions of absorbing vibration, compensating for installation errors, and reducing rigid impact.

[0040] The motion mechanism consists of two sets of symmetrical bearing fixing frames 3, formed by connecting a middle fixing plate 3-1 and a U-shaped fixing frame 3-2 via wheel adjustment bolts 2; the two sets of U-shaped fixing frames 3-2 are fixed to both sides of the lower crossbeam side plate 1-2 via connecting shafts 4. The lower crossbeam side plate 1-2 has a downward-facing U-shaped opening, housing a self-aligning ball bearing 12, which passes through the middle fixing plate 3-1 and connects to the output shaft of the travel motor 7. The travel wheel 10 engages with the bearing 12 via a wheel expansion sleeve 11.

[0041] In addition, the intermediate fixing plate 3-1 is provided with an oil injection hole 13 around its perimeter. This oil injection hole 13 is connected to the central oil passage of the intermediate fixing plate 3-1. The central oil passage can guide the injected lubricating oil to the bearing 12, which facilitates the lubrication and maintenance of the bearing 12. The preferred materials for each component are: the motor fixing plate 6 is made of 45# steel, the bearing fixing frame 3 is made of 45# steel, and the wheel set adjusting bolt 2 is made of 40Cr alloy structural steel.

[0042] The walking wheel set 0 has height and angle adjustment functions, as detailed below:

[0043] Height adjustment: By adjusting the wheel set adjusting bolt 2 or adding or removing adjusting shims, the distance between the middle fixing plate 3-1 and the U-shaped fixing frame 3-2 is changed, thereby adjusting the vertical position of the walking wheel 10.

[0044] Angle adjustment: Adjust the angle by moving the adjusting bolt 2 left or right or adjusting the angle of the self-aligning ball bearing to make the traveling wheel 10 parallel to the track.

[0045] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A stacker crane traveling wheel assembly, mounted on a lower crossbeam (1) of the stacker crane, wherein the lower crossbeam (1) serves as the supporting structure for the entire traveling wheel assembly and is connected to the main structure of the stacker crane; a set of stacker crane traveling wheel assemblies (0) are respectively provided at both ends of the lower crossbeam (1), and the lower crossbeam (1) includes an upper plate (1-1) and a side plate (1-2); characterized in that, The stacker crane's traveling wheel set includes a motor mechanism and a motion mechanism; The motor mechanism includes a lower crossbeam frame (5), a motor fixing plate (6), and a walking motor (7); the lower crossbeam frame (5) is fixed above the lower crossbeam upper plate (1-1), the motor fixing plate (6) is connected to the lower crossbeam frame (5) by long pins (9), and the walking motor (7) is fixedly connected to the motor fixing plate (6). The motion mechanism includes a bearing fixing frame (3), a bearing (12), and a traveling wheel (10). Two sets of bearing fixing frames (3) are provided, located on both sides of the lower crossbeam side plate (1-2). Each set of bearing fixing frames (3) includes a middle fixing plate (3-1) and a U-shaped fixing frame (3-2). The U-shaped fixing frames (3-2) located on both sides of the lower crossbeam side plate (1-2) are connected by a connecting shaft (4). The middle fixing plate (3-1) is located inside the U-shaped fixing frame (3-2) and is connected by wheel adjustment bolts. (2) Connected to the U-shaped fixed frame (3-2); the lower crossbeam side plate (1-2) has a U-shaped opening facing downward at the position of the middle fixed plate (3-1); the bearing (12) passes through the middle fixed plate (3-1), is parallel to the central axis of the connecting shaft (4), and the bearing (12) is connected to the output shaft of the walking motor (7); the walking wheel (10) is sleeved on the bearing (12); when the walking motor (7) runs, it drives the bearing (12) to run, and then drives the walking wheel (10) to run.

2. The stacker crane traveling wheel set according to claim 1, characterized in that, The lower crossbeam (1) is connected to the columns and loading platform in the main structure of the stacker crane.

3. The stacker crane traveling wheel set according to claim 1, characterized in that, Buffer pads (8) are provided on both sides of the connection between the motor fixing plate (6) and the long pin (9).

4. A stacker crane traveling wheel set according to claim 1, characterized in that, The connection between the lower crossbeam frame (5) and the upper plate (1-1) of the lower crossbeam is a threaded connection; the connection between the walking motor (7) and the motor fixing plate (6) is a threaded connection.

5. A stacker crane traveling wheel set according to claim 1, characterized in that, The walking motor (7) is an AC variable frequency motor.

6. A stacker crane traveling wheel set according to claim 1, characterized in that, A wheel assembly expansion sleeve (11) is provided between the walking wheel (10) and the bearing (12), and the wheel assembly expansion sleeve (11) is embedded in the walking wheel (10) to fasten the bearing (12) and the walking wheel (10).

7. A stacker crane traveling wheel set according to claim 1, characterized in that, The lower crossbeam (1) is provided with several mounting holes for fixing the lower crossbeam frame (5), the motor fixing plate (6) and the bearing fixing frame (3).

8. A stacker crane traveling wheel set according to claim 1, characterized in that, The bearing (12) is a self-aligning ball bearing.

9. A stacker crane traveling wheel set according to claim 1, characterized in that, The lower crossbeam (1), lower crossbeam frame (5), motor fixing plate (6) and bearing fixing frame (3) are all made of forged materials; the wheel set adjusting bolt (2) is made of carbon structural steel or alloy structural steel.

10. A stacker crane traveling wheel set according to claim 1, characterized in that, The intermediate fixing plate (3-1) is provided with a plurality of oil injection holes (13) around its perimeter. The oil injection holes (13) are connected to the intermediate oil passage. Lubricating oil is injected from the oil injection holes (13) into the intermediate oil passage of the intermediate fixing plate (3-1), and the intermediate oil passage guides the lubricating oil onto the bearing (12).

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