A new detachable self-lubricating stacker travelling wheel box

Abstract

This utility model discloses a novel detachable self-lubricating stacker crane travel wheel box, relating to the field of travel wheel box technology. It includes a lower crossbeam, with travel wheel boxes located at both ends of the lower crossbeam. The travel wheel boxes are connected to the lower crossbeam via a flat key. High-strength bolts are provided on the wheel box structure, which is mounted on the lower crossbeam. Adjustment holes are provided on the wheel box structure, which is connected to the lower crossbeam via the adjustment holes and a large flat key. In this invention, by adopting a composite detachable adjustable connection structure between the travel wheel box and the lower crossbeam, and combining it with an integrated automatic oiling system, anti-tipping mechanism, and cleaning device, the travel wheel box can be quickly replaced as a complete set when the travel mechanism parts are damaged. This avoids the difficulty and time-consuming disassembly of traditional integrated structures, which leads to prolonged equipment downtime and significantly improves the efficiency of automated warehouse entry and exit.

Description

Technical Field

[0001] This utility model relates to the field of traveling wheel box technology, and in particular to a novel detachable self-lubricating stacker traveling wheel box. Background Technology

[0002] Because the traditional stacker crane's traveling mechanism housing and its lower crossbeam are integrated, if a part of the traveling mechanism is damaged and needs to be replaced during operation, the machine must be stopped for disassembly. Disassembly of traditional traveling mechanisms is difficult, and sometimes the parts are glued too tightly to be disassembled. This affects the use of the equipment on site and reduces the efficiency of the automated warehouse's inbound and outbound operations. In contrast, detachable traveling wheel housings can be replaced as a set in an emergency, which can greatly reduce the losses caused by the time spent replacing parts and the resulting equipment idle shafts.

[0003] Wheel boxes under normal operating conditions require regular maintenance. The frequency of maintenance should be proportional to the efficiency of the stacker crane. For some stacker cranes with high usage rates on site, automatic lubrication devices can circulate lubrication according to a set program. This can reduce maintenance costs and make the stacker crane operate more efficiently.

[0004] In conclusion, a new type of detachable self-lubricating stacker crane wheel box is necessary. Utility Model Content

[0005] Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this utility model provides a novel detachable self-lubricating stacker crane wheel box. This solves the problem that, in traditional stacker cranes, the wheel box and its lower crossbeam are integrated. This means that if a part of the walking mechanism is damaged and needs to be replaced during operation, the machine must be stopped and disassembled. However, traditional walking mechanisms are difficult to disassemble, and sometimes the parts are too tightly bonded to be disassembled. This affects the use of the equipment on site and reduces the efficiency of the automated warehouse's inbound and outbound operations.

[0007] Technical solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A novel detachable self-lubricating stacker crane travel wheel box includes a lower crossbeam, with travel wheel boxes provided at both ends of the lower crossbeam. The travel wheel boxes are connected to the lower crossbeam by a flat key. The wheel box structure is provided with high-strength bolts, and the wheel box structure is installed on the lower crossbeam by the high-strength bolts. The wheel box structure is provided with adjustment holes, and the wheel box structure is connected to the lower crossbeam through the adjustment holes and the large flat key.

[0010] Preferably, the wheel box includes a wheel box structure, a wheel assembly is provided inside the wheel box structure, a wheel is provided inside the wheel assembly, a guide wheel is provided at the lower end of the wheel box structure, a wheel assembly located in the right wheel box is connected to a driving motor, the driving motor is connected to the wheel via a drive shaft, an automatic oiling system is provided at the upper end of the wheel box structure, an anti-tipping mechanism is provided on the wheel box structure, and a cleaning device is provided at the lower end of the wheel box structure.

[0011] The beneficial effects of the technical solutions provided in this application include at least the following:

[0012] In this new design, by adopting a composite detachable and adjustable connection structure between the traveling wheel box and the lower crossbeam, and combining it with an automatic lubrication system, anti-tipping mechanism, and cleaning device integrated on the wheel box structure, the traveling wheel box can be quickly replaced as a complete set when the traveling mechanism parts are damaged. This avoids the difficulty and time-consuming disassembly of traditional integrated structures, which leads to prolonged equipment standby and significantly improves the efficiency of vertical warehouse entry and exit. On the other hand, the automatic lubrication system can circulate lubrication to the traveling wheel bearings, guide wheel bearings, and traveling wheel components according to a set cycle, and the cleaning device can remove track impurities in real time. The two work together to reduce component wear, lower maintenance costs, and extend the service life of core components such as traveling wheels and guide wheels. At the same time, the anti-tipping mechanism, in conjunction with the traveling guide wheels, can effectively prevent the stacker crane from tipping over, and the wheel box height adjustment function can ensure that the active and passive wheel boxes are always horizontal, reducing wear damage to the traveling wheels and adapting to different track installation precision conditions in different aisle areas. Ultimately, this achieves efficient, stable, and low-loss long-term operation of the stacker crane. Attached Figure Description

[0013] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0014] Figure 1 This is a structural diagram of the entire utility model;

[0015] Figure 2 This is a structural diagram of the walking motor of this utility model;

[0016] Figure 3 This is a structural diagram of the walking guide wheel of this utility model;

[0017] Figure 4 This is a structural diagram of the automatic oiling system of this utility model.

[0018] Legend: 1. Lower crossbeam; 2. Adjustment hole; 3. High-strength bolt; 4. Travel motor; 5. Automatic oiling system; 6. Anti-tipping mechanism; 7. Travel guide wheel; 8. Cleaning device; 9. Wheel box structure; 10. Travel wheel assembly; 11. Travel wheel. Detailed Implementation

[0019] This application provides a novel detachable self-lubricating stacker crane wheel box, which effectively solves the technical problem that, in traditional stacker cranes, the walking mechanism box and its lower crossbeam are integrated. This means that if a part of the walking mechanism is damaged and needs to be replaced during operation, the machine must be stopped and disassembled. However, traditional walking mechanisms are difficult to disassemble, and sometimes the adhesive is too tight to disassemble, which affects the use of the equipment on site and reduces the efficiency of the automated warehouse's inbound and outbound operations. Example

[0020] like Figure 1 - Figure 4 As shown, the technical solution in this application aims to effectively solve the problem that, since the traditional stacker crane's traveling mechanism housing and its lower crossbeam are integrated, if a part of the traveling mechanism is damaged and needs to be replaced during operation, the machine must be stopped for disassembly. Disassembly of traditional traveling mechanisms is difficult, and sometimes the adhesive is too tight to disassemble, which affects the use of on-site equipment and reduces the efficiency of the automated warehouse's inbound and outbound operations. The overall approach is as follows:

[0021] To address the problems existing in the prior art, this utility model provides a novel detachable self-lubricating stacker crane travel wheel box, including a lower crossbeam 1. The lower crossbeam 1 is the load-bearing foundation component of the stacker crane, and travel wheel boxes are assembled on both sides of it. The travel wheel box uses a wheel box structure 9 as the core load-bearing component. The wheel box structure 9 and the lower crossbeam 1 adopt a composite detachable adjustable connection structure of "large flat key + high-strength bolt 3 + adjustment hole 2", which can easily adjust the relative height between the wheel box and the lower crossbeam 1, thereby ensuring that the active and passive wheel boxes are always on the same horizontal line, reducing damage to the travel wheels 11, and adapting to different working conditions.

[0022] The wheel box structure 9 facing the connecting end face of the lower crossbeam 1 and the corresponding end face of the lower crossbeam 1 facing the wheel box structure 9 are both provided with rectangular keyways of appropriate size (keyway width 20mm, depth 6mm, matching the specifications of the large flat key). The keyways are fitted with a large flat key of 20×12×220 (material is 45 steel, heat treated to a hardness of HRC20-25, with good shear resistance).

[0023] After the large flat key is embedded, it can achieve precise positioning of the wheel box structure 9 and the lower crossbeam 1, ensuring that the transmission axes of the two are aligned and can stably transmit the torque when the stacker crane is moving (the maximum transmitted torque can reach 800 N·m, which can meet the power requirements of the movement). On the other hand, a 0.1 to 0.2 mm fit clearance is reserved between the large flat key and the keyway to provide movement space for subsequent wheel box height adjustment.

[0024] The wheel box structure 9 has through-hole adjustment holes 2 at its four corner edges. The diameter of the adjustment holes 2 is 16mm and the hole walls are precision bored to avoid jamming when the bolts are inserted. The high-strength bolts 3 can effectively prevent the connection from loosening due to the vibration of the stacker crane, and ensure the connection rigidity between the wheel box and the lower crossbeam 1.

[0025] The traveling wheel box includes a wheel box structure 9, with a traveling guide wheel 7 at the lower end of the wheel box structure 9 and a traveling wheel assembly 10 at the side end of the wheel box structure 9. The traveling wheel assembly 10 contains a traveling wheel 11. The traveling wheel assembly 10 located in the right-side traveling wheel box is connected to a traveling motor 4. The traveling motor 4 is connected to the traveling wheel 11 through a high-strength alloy structural steel shaft. The traveling motor 4 serves as a power source, transmitting power to the traveling wheel assembly 10 in the traveling wheel box through a drive shaft. The traveling wheel assembly 10 then converts the power into the rotational motion of the traveling wheel 11, thereby driving the stacker crane to move on the track in the aisle. Both the traveling wheel 11 and the traveling guide wheel 7 are made of high-quality rigid materials and have a good structural design, which can withstand large loads and impacts.

[0026] The control of the traveling wheel box comes from the control of the traveling motor 4. According to the instructions, the starting, stopping, speed and direction of the traveling motor 4 are controlled, so as to realize the precise positioning and rapid movement of the stacker crane in the aisle. The traveling motor 4 is usually equipped with safety devices such as brakes, which can stop quickly in an emergency to ensure the stability and safety of the stacker crane. The upper end of the wheel box structure 9 is equipped with an automatic oil injection system 5. The automatic oil injection system 5 drives the plunger to reciprocate through a gear reducer mechanism to realize the oil suction and discharge process. It can realize functions such as automatic circulation lubrication according to the set running and stopping cycle and fault alarm.

[0027] The wheel box structure 9 is provided with an anti-tipping mechanism 6, and the lower end of the wheel box structure 9 is provided with a cleaning device 8. The cleaning device 8 can effectively reduce the damage to the traveling wheel 11, which can reduce maintenance costs and extend the service life of the bearings in the traveling wheel 11 and the traveling guide wheel 7. The anti-tipping mechanism 6, together with the traveling guide wheel 7, can play the role of preventing the stacker crane from tipping over.

[0028] The wheel box body has a reasonable and compact structural design, with tight and reliable connections between various components, making full use of space.

[0029] Working principle:

[0030] First, when the stacker receives the travel command, the travel motor 4 is powered on and starts. Its output torque is transmitted to the high-strength alloy structural steel shaft through the coupling. The high-strength alloy structural steel shaft then transmits the power to the helical gear reduction mechanism of the travel wheel assembly 10. After reduction, the torque is transmitted to the travel wheel 11, driving the travel wheel 11 to roll along the track. At the same time, the travel motors 4 of the travel wheel boxes on both sides maintain synchronous speed to ensure that the lower crossbeam 1 drives the main body of the stacker to move smoothly.

[0031] Step 2: The walking motor 4 is equipped with an encoder, which can provide real-time feedback on the motor speed and rotation angle. The control system adjusts the motor's start / stop, speed, and forward / reverse rotation according to the command requirements.

[0032] When rapid movement is required, the motor operates at its rated speed, and the stacker crane can travel at a speed of up to 1.5 m / s.

[0033] When approaching the target location, the motor enters a speed reduction mode (the speed is reduced to 30% of the rated speed), and the walking speed is reduced to 0.5m / s. Combined with the position feedback of the encoder, it achieves "precise positioning within ±5mm".

[0034] After positioning is completed, the motor is powered off, and the brake (an electromagnetic brake integrated at the rear end of the walking motor 4) immediately engages, causing the walking wheel 11 to stop rotating within 0.5 seconds to avoid inertial slippage.

[0035] Step 3: Safety protection during operation is divided into two categories: "active protection" and "emergency braking".

[0036] Active protection: The guide wheel 7 is in constant contact with the side of the track. If the stacker crane deviates laterally, the pressure between the guide wheel 7 and the side of the track triggers the pressure sensor (integrated on the guide wheel bearing seat). The control system immediately adjusts the speed difference between the two motors to correct the direction of deviation. At the same time, the anti-tipping hook engages with the upper flange of the track. Even if one wheel is suspended in the air (maximum suspension height ≤10mm), the hook can still withstand the lateral tension to prevent overturning.

[0037] Emergency braking: When the stacker crane detects an obstacle on the track, motor overload (current exceeds 1.5 times the rated value), or lubrication system failure, the brake of the travel motor 4 will immediately de-energize and engage, and the buzzer will sound an alarm. The crane can only be restarted after the fault is cleared.

[0038] Step 4: When the lubrication pump is working, the micro drive motor (power 12V / 50W) drives the plunger to reciprocate through the gear reducer. When the plunger moves upward, it draws oil from the oil storage chamber, and when it moves downward, it pressurizes the grease (pressure 0.8-1.2MPa) and delivers it to each lubrication point through the oil injection pipe.

[0039] If the lubrication pump is short of oil (oil level in the reservoir is below 1 / 4) or the pipeline is blocked (oil pressure > 1.5MPa), the system will immediately trigger a fault alarm (indicator light flashing + remote signal feedback) to remind maintenance personnel to handle the situation.

[0040] Meanwhile, the cleaning device 8 moves with the wheel box and cleans the track surface of impurities in real time, preventing impurities from entering the contact surface between the wheel 11 and the track. According to actual tests, this cleaning function can reduce the wear of the wheel 11 by more than 40%. With automatic lubrication, the service life of the bearings of the wheel 11 and the guide wheel 7 can be extended to twice that of the traditional structure.

[0041] 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 here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A novel detachable self-lubricating stacker crane travel wheel box, comprising a lower crossbeam (1), characterized in that: Both ends of the lower crossbeam (1) are provided with a travel wheel box. The travel wheel box is connected to the lower crossbeam (1) by a flat key. The travel wheel box includes a wheel box structural component (9). The wheel box structure (9) is provided with high-strength bolts (3), and the wheel box structure (9) is installed on the lower crossbeam (1) by the high-strength bolts (3). The wheel box structure (9) is provided with adjustment holes (2), and the wheel box structure (9) is connected to the lower crossbeam (1) by the adjustment holes (2) and the large flat key.

2. The novel detachable self-lubricating stacker crane wheel box according to claim 1, characterized in that, The wheel box structure (9) is provided with a walking wheel assembly (10), and the walking wheel assembly (10) is provided with a walking wheel (11).

3. A novel detachable self-lubricating stacker crane wheel box according to claim 2, characterized in that, The lower end of the wheel box structure (9) is provided with a walking guide wheel (7).

4. A novel detachable self-lubricating stacker crane wheel box according to claim 3, characterized in that, The walking wheel assembly (10) located in the right walking wheel box is connected to the walking motor (4), which is connected to the walking wheel (11) via the drive shaft.

5. A novel detachable self-lubricating stacker crane wheel box according to claim 4, characterized in that, The wheel box structure (9) is equipped with an automatic oiling system (5) at its upper end.

6. A novel detachable self-lubricating stacker crane wheel box according to claim 5, characterized in that, The wheel box structure (9) is provided with an anti-tipping mechanism (6).

7. A novel detachable self-lubricating stacker crane wheel box according to claim 6, characterized in that, The lower end of the wheel box structure (9) is provided with a cleaning device (8).

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