Strengthening test method for low-position picking vehicle

Abstract

The invention relates to a strengthening test method for a low-position picking vehicle, and the method comprises the following steps: designing a circulation path which is provided with a straight road section and a turning road section, and is provided with a following motion test point; cyclic test: enabling the test vehicle to start from the starting point and run along the cyclic path until the test vehicle returns to the starting point under different load conditions in sequence; in the running process, when the test vehicle runs to the following action test point, carrying out a following action test; and the cyclic test is repeated until the test time is reached. The invention provides a strengthening test method which is more fit with the actual working condition of the low-position picking vehicle, can simulate the extreme working condition of the low-position picking vehicle in the actual use environment, and can comprehensively evaluate the mechanical structure strength, the electrical system stability and the hydraulic system durability of the vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of forklifts, and in particular to an enhanced testing method for a low-position order picking vehicle. Background Art

[0002] A low-level order picker is an electric storage device designed specifically for warehouses, distribution centers, and other scenarios. It is primarily used for picking, transporting, and stacking goods on low-level shelves (usually below 2.5 meters in height). Its core function is to improve picking efficiency and reduce labor intensity while taking into account safety and flexibility. Its main working conditions are forward movement and stopping to pick goods midway.

[0003] As warehouse vehicles, the performance stability and reliability of low-level order pickers directly impact the efficiency and safety of logistics operations. Existing technologies often use the same hardening test methods used for electric pallet trucks to test low-level order pickers. However, there are no national or industry standards for hardening tests of low-level order pickers, and the lack of hardening tests tailored to real-world operating conditions makes it difficult to fully expose potential electrical and mechanical design flaws. Therefore, it is necessary to develop a set of hardening test methods that simulate the extreme operating conditions found in real-world environments and comprehensively evaluate the vehicle's mechanical structural strength, electrical system stability, and hydraulic system durability. Summary of the Invention

[0004] Based on this, the purpose of the present invention is to provide an enhanced testing method for a low-level picking vehicle, which can simulate the extreme working conditions in the real use environment of the low-level picking vehicle, and comprehensively evaluate the mechanical structure strength, electrical system stability and hydraulic system durability of the low-level picking vehicle.

[0005] To achieve the above object, the present invention adopts the following technical solutions: The present invention first provides an enhanced testing method for a low-level order picking vehicle, which includes the following steps: Designing a cycle path, wherein the cycle path has a straight section, a turning section and a follow-up action test point arranged thereon; Cyclic test: The test vehicle is driven along the cyclic path from the starting point under different load conditions until it returns to the starting point; during the driving process, when the test vehicle reaches the following action test point, a following action test is performed; Repeat the test cycle until the test time is reached.

[0006] As a further improvement of the above-mentioned scheme of the present invention, the circular path includes straight section 1, turning section 1, straight section 2, turning section 2, straight section 3, turning section 3, straight section 4, turning section 4, straight section 5, turning section 5, and turning section 6; straight section 2, turning section 2, straight section 3, turning section 3, straight section 4, turning section 4, straight section 5, and turning section 5 are connected end to end in sequence to form a ring, straight section 1 is arranged on one side of straight section 2 and is perpendicular to straight section 2, one end of straight section 1 is the starting point and the other end is connected to turning section 1 and turning section 6, turning section 1 and turning section 6 are symmetrically arranged about straight section 1 and are both connected to straight section 2, and a following action test point is set on straight section 3, straight section 4 or straight section 5.

[0007] As a further improvement of the above-mentioned solution of the present invention, a reversing point 1 is provided on the side of the straight section 2 located on the turning section 1 close to the turning section 2, and a reversing point 2 is provided on the side of the straight section 2 located on the turning section 6 close to the turning section 5.

[0008] As a further improvement of the above solution of the present invention, a bump block with a thickness of 5 mm is further provided on the circulation path; during driving, when the test vehicle drives to the bump block, the speed of the test vehicle is controlled to be 2-4 km / h.

[0009] As a further improvement of the above-mentioned scheme of the present invention, cargo location A and cargo location B are arranged at intervals at the following action test point, and the following action test includes: the operator stops the test vehicle at cargo location A and gets off, activates the follow button of the test vehicle, moves forward to cargo location B to pick, then moves backward to cargo location A to pick, and then moves forward to cargo location B to pick; repeats this until three forward pickings and two backward pickings are completed, and then the operator gets on the vehicle, completes the following action test, and continues to move forward.

[0010] As a further improvement of the above-mentioned scheme of the present invention, each cycle test includes: driving the test vehicle from the starting point along the cycle path under full load until it returns to the starting point; driving the test vehicle from the starting point along the cycle path under full load until it returns to the starting point; after unloading the load at the starting point, driving the test vehicle from the starting point along the cycle path under empty load until it returns to the starting point.

[0011] As a further improvement to the above solution of the present invention, after completing one cycle test, the vehicle is stopped and the horn is sounded once.

[0012] As a further improvement to the above solution of the present invention, in any two adjacent cycle tests, the test vehicles travel in opposite directions.

[0013] As a further improvement to the above solution of the present invention, after the test time reaches a predetermined time, the test vehicle is further retested, and the retest includes a driving noise test, a motor / battery current test, and a hydraulic performance test.

[0014] As a further improvement to the above-mentioned solution of the present invention, in each cyclic test, it is checked whether the test vehicle vibrates or deviates during driving and whether the forks get stuck when they are lifted; before each cyclic test, the ground clearance of the center of the wheelbase of the test vehicle is checked once, and during the cyclic test, the ground clearance of the center of the wheelbase of the test vehicle is checked once at predetermined intervals.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an enhanced testing method that is more in line with the actual working conditions of low-level picking vehicles. It can simulate the extreme working conditions in the real use environment of low-level picking vehicles and can comprehensively evaluate the vehicle's mechanical structure strength, electrical system stability and hydraulic system durability.

[0016] The present invention sets up unique dismounting and picking and vehicle following actions based on the operating characteristics of the picking vehicle. In order to more rigorously evaluate the vehicle, a bumpy working condition is also set up to test the vehicle's ability to withstand impact loads. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of a circulation path according to the present invention; Figure 2 A driving direction diagram of the test vehicle in the present invention; Figure 3 This is another driving direction diagram of the test vehicle in the present invention.

[0018] Figure markings: 1. Straight section one; 2. Turning section one; 3. Straight section two; 4. Turning section two; 5. Straight section three; 6. Turning section three; 7. Straight section four; 8. Turning section four; 9. Straight section five; 10. Turning section five; 11. Turning section six; 12. Following action test point; 13. Bump block; 14. Reversing point one; 15. Reversing point two. DETAILED DESCRIPTION

[0019] To facilitate understanding of the present invention, the present invention will be described more fully below in conjunction with specific embodiments. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0021] This embodiment provides a method for strengthening the test of a low-level order picking vehicle, which specifically includes the following steps: 1. Design the loop path The actual application scenarios and operation modes of low-level picking vehicles are quite different from those of electric pallet trucks. The main differences are: (1) Low-level picking vehicles are vehicles whose forward direction is opposite to the load direction. Most of the walking path during the picking process is forward, and they will not be used in scenarios where they frequently move backward; (2) Picking vehicles will frequently start and stop the vehicle during the picking process; (3) Picking vehicles have the function of vehicle following, which will be used during the picking process; (4) Low-level picking vehicles are used for picking between shelves, and turning conditions will occur frequently.

[0022] On this basis, the actual picking operation scene is simulated and combined with Figure 1 In this embodiment, the loop path is designed to be ring-shaped. The loop path mainly includes a straight section 1, a turning section 2, a straight section 3, a turning section 2, a straight section 3, a turning section 4, a straight section 3, a turning section 3, a straight section 4, a turning section 4, a straight section 5, a turning section 3, a turning section 6, a straight section 4, a turning section 4, a straight section 5, a turning section 5, and a turning section 6, which are arranged in sequence. Straight section 2 is arranged opposite straight section 4, and straight section 3 is arranged opposite straight section 5. Straight section 2, turning section 2, straight section 3, turning section 3, straight section 4, turning section 4, straight section 5, and turning section 5 are connected end to end to form a ring shape. Straight section 1 is arranged on one side of straight section 2 and is perpendicular to straight section 2. One end of straight section 1 is the starting point, and its other end is connected to turning section 1 and turning section 6. Turning section 1 and turning section 6 are symmetrically arranged about straight section 1 and are both connected to straight section 2. In this embodiment, considering the site and test requirements, the length of the straight section 1 is set to 4m, the lengths of the straight section 3 5 and the straight section 5 9 are both set to 30m, and the length of the straight section 4 7 is set to 8m.

[0023] A follow-up action test point 12 was set up on straight section 3 (5). Positions A and B were spaced apart at this point to simulate picking and increase vehicle start and stop times. Considering the actual situation and test requirements, the distance between positions A and B was set to 2 meters.

[0024] Taking into account the bumpy working conditions, a bump block 14 with a thickness of 5 mm is also set on the straight road section 3 5. When passing the bump block 14, the vehicle speed is controlled at 2-4 km / h, so as to simulate the uneven path and the thresholds or low steps that exist when transporting in different venues.

[0025] A reversing point 1 is provided on the straight section 2 at a side of the turning section 1 close to the turning section 2, and a reversing point 2 is provided on the straight section 2 at a side of the turning section 6 close to the turning section 5.

[0026] 2. Cycle Test The test vehicle starts from the starting point and drives along the cycle path until it returns to the starting point under different load conditions; Figure 2 The specific process is: At the starting point, load the test vehicle with cargo until it is fully loaded. When fully loaded, the test vehicle starts from the starting point and drives along straight section 1, turning section 1, straight section 2, turning section 3, turning section 2, straight section 3, straight section 5 (a following action test is performed at the following action test point 12), turning section 3, straight section 6, straight section 4, turning section 4, straight section 5, turning section 5, straight section 5, straight section 10, straight section 2, 3, stops forward and starts reversing at reversing point 14, then reverses along turning section 1, 2, straight section 1, and finally returns to the starting point; Continue from the starting point and drive along Straight Section 1 (1), Turn Section 1 (2), Straight Section 2 (3), Turn Section 2 (4), Straight Section 3 (5) (perform a following maneuver test at Following Maneuver Test Point 12), Turn Section 3 (6), Straight Section 4 (7), Turn Section 4 (8), Straight Section 5 (9), Turn Section 5 (10), Straight Section 2 (3)). Stop forward and start reversing at Reversing Point 1 (14). Then reverse along Turn Section 1 (2) and Straight Section 1 (1), and finally return to the starting point. After unloading the cargo at the starting point, the test vehicle starts from the starting point with no load and drives in sequence along straight section one 1, turning section one 2, straight section two 3, turning section two 4, straight section three 5 (when driving to following action test point 12, conduct following action test), turning section three 6, straight section four 7, turning section four 8, straight section five 9, turning section five 10, straight section two 3 to reversing point one 14, stops forward and starts reversing, then reverses along turning section one 2 and straight section one 1, and finally returns to the starting point.

[0027] The above process is a cyclic test. In the above process, as long as the test vehicle drives to the following action test point 12, a following action test must be performed. The following action test is specifically as follows: the operator stops the test vehicle at cargo position A and gets off the vehicle, activates the follow button of the test vehicle, and the test vehicle follows the operator forward to cargo position B for picking, then backs off to cargo position A for picking, and then forward to cargo position B for picking; this is repeated until three forward pickings and two backward pickings are completed, and then the operator gets on the vehicle, completes the following action test, and continues to move forward. In the cyclic path of this embodiment, the entire forward path accounts for 90%, there is a backward action, and a turning condition is added.

[0028] Before each test cycle, check the test vehicle's wheelbase center ground clearance. During the test cycle, check the test vehicle's wheelbase center ground clearance at a predetermined interval (set to 25 hours in this example). During the test cycle, check the test vehicle for any jitter or deviation, and fork lift jamming. After completing a test cycle, stop the vehicle (with key start / stop) and sound the horn once.

[0029] Repeat the cycle test until the vehicle test time is reached (in this embodiment, the vehicle test time must meet 400h). Considering that the test vehicle turns in one direction during the cycle, in this embodiment, the test vehicle drives in opposite directions in any two adjacent cycle tests. For example, after completing the first cycle test, combined with Figure 3 , when conducting the second cycle test, the specific process is as follows: At the starting point, the test vehicle is loaded with cargo until it is fully loaded. When fully loaded, the test vehicle starts from the starting point and drives along straight section one 1, turning section six 11, straight section two 3, turning section five 10, straight section five 9, turning section four 8, straight section four 7, turning section three 6, straight section three 5 (a following action test is performed when the vehicle reaches the following action test point 12), turning section two 4, straight section two 3, stops forward and starts reversing at reversing point two 15, then reverses along turning section six 11 and straight section one 1, and finally returns to the starting point; Continue from the starting point and drive along straight section one (1), turning section six (11), straight section two (3), turning section five (10), straight section five (9), turning section four (8), straight section four (7), turning section three (6), straight section three (5) (perform a following maneuver test at following maneuver test point 12), turning section two (4), straight section two (3), stop forward and start reversing at reversing point two (15), then reverse along turning section six (11), straight section one (1), and finally return to the starting point. After unloading the cargo at the starting point, the test vehicle starts from the starting point with no load and drives along straight section one 1, turning section six 11, straight section two 3, turning section five 10, straight section five 9, turning section four 8, straight section four 7, turning section three 6, straight section three 5 (conduct a following action test when driving to the following action test point 12), turning section two 4, straight section two 3, stop forward and start reversing at reversing point two 15, then reverse along turning section six 11 and straight section one 1, and finally return to the starting point.

[0030] After repeated cyclic testing, the test vehicle must undergo retesting. This retesting includes testing for driving noise, motor / battery current, and hydraulic performance. These tests are all performed using conventional techniques and are not detailed here. Retesting is necessary because prolonged vehicle operation can lead to component wear and loosening, noise generation, reduced motor and hydraulic system performance, increased motor / battery current, and increased hydraulic leakage. Retesting can identify these issues promptly.

[0031] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0032] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A method for strengthening the test of a low-level picking vehicle, characterized in that: It includes the following steps: Designing a cycle path, wherein the cycle path has a straight section, a turning section and a follow-up action test point arranged thereon; Cyclic test: The test vehicle is driven along the cyclic path from the starting point under different load conditions until it returns to the starting point; during the driving process, when the test vehicle reaches the following action test point, a following action test is performed; Repeat the test cycle until the test time is reached.

2. The intensive testing method for low-level order picking vehicles according to claim 1, characterized in that: The cycle path includes straight section 1, turning section 1, straight section 2, turning section 2, straight section 3, turning section 3, straight section 4, turning section 4, straight section 5, turning section 5 and turning section 6; straight section 2, turning section 2, straight section 3, turning section 3, straight section 4, turning section 4, straight section 5 and turning section 5 are connected end to end in sequence to form a ring, straight section 1 is arranged on one side of straight section 2 and is perpendicular to straight section 2, one end of straight section 1 is the starting point and the other end is connected to turning section 1 and turning section 6, turning section 1 and turning section 6 are symmetrically arranged about straight section 1 and are both connected to straight section 2, and a following action test point is set on straight section 3, straight section 4 or straight section 5.

3. The enhanced test method for low-level order picking vehicles according to claim 2, characterized in that: A reversing point 1 is provided on the straight section 2 at a side of the turning section 1 close to the turning section 2, and a reversing point 2 is provided on the straight section 2 at a side of the turning section 6 close to the turning section 5.

4. The intensive testing method for a low-level order picking vehicle according to claim 1, characterized in that: The circulation path is also provided with a bump block with a thickness of 5 mm. During the driving process, when the test vehicle reaches the bump block, the speed of the test vehicle is controlled to be 2-4 km / h.

5. The enhanced test method for a low-level order picking vehicle according to claim 1, characterized in that: The following action test point is provided with cargo location A and cargo location B at intervals, and the following action test includes: the operator stops the test vehicle at cargo location A and gets off, activates the follow button of the test vehicle, moves forward to cargo location B to pick, then moves backward to cargo location A to pick, and then moves forward to cargo location B to pick; repeats this until three forward pickings and two backward pickings are completed, and then the operator gets on the vehicle, completes the following action test, and continues to move forward.

6. The enhanced test method for a low-level order picking vehicle according to claim 1, characterized in that: Each cycle test includes: the test vehicle is driven from the starting point along the cycle path under full load until it returns to the starting point; the test vehicle is driven from the starting point along the cycle path under full load until it returns to the starting point; after unloading the load at the starting point, the test vehicle is driven from the starting point along the cycle path under empty load until it returns to the starting point.

7. The enhanced test method for a low-level order picking vehicle according to claim 1, characterized in that: After completing one test cycle, stop the vehicle and sound the horn once.

8. The enhanced test method for a low-level order picking vehicle according to claim 1, characterized in that: In any two adjacent cycle tests, the test vehicles shall travel in opposite directions.

9. The enhanced test method for a low-level order picking vehicle according to claim 1, characterized in that: After the test time reaches the predetermined time, the test vehicle is retested, and the retest includes a driving noise test, a motor / battery current test, and a hydraulic performance test.

10. The enhanced test method for a low-level order picking vehicle according to claim 1, characterized in that: During each test cycle, check whether the test vehicle shakes or deviates during driving, and whether the forks get stuck when lifting. Before each test cycle, check the ground clearance of the center of the test vehicle's wheelbase, and during the test cycle, check the ground clearance of the center of the test vehicle's wheelbase at predetermined intervals.

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