Storage vehicle endurance test device

Abstract

The utility model discloses an endurance test device for a storage vehicle. The endurance test device comprises a switch control part, a test bench and a console, the switch control part is connected with the upper end of a storage vehicle air handle, and an execution element used for pressing a button on the air handle is arranged in the switch control part. The test bed comprises a vehicle body fixing part, a driving wheel supporting part and a bumping simulation part; according to the storage vehicle testing device, the testing device is arranged, so that the whole or local parts of the storage vehicle can be tested, and the universal performance of the storage vehicle testing device is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of warehouse vehicle testing devices, specifically a warehouse vehicle durability testing device. Background Technology

[0002] For warehouse vehicles such as pallet trucks, pallet stackers, and picking vehicles, the industry lacks a mature reliability verification system for the entire machine. Relevant standards only require a 200-hour road test for enhanced performance, while there are no relevant verification standards for components.

[0003] Therefore, the reliability of the entire machine and its components of new warehouse vehicles is often insufficient. Most problems can only be discovered after the product is launched and user feedback is received. By then, it is too late, and subsequent economic benefits and product confidence have already been affected.

[0004] At the same time, when replacing new components such as controllers and motors, there are no professional testing methods or test benches. The verification method also needs to be strengthened through road testing. In terms of test intensity and verification sufficiency, there are also deficiencies. Moreover, road testing requires a lot of manpower, material resources and a large space. Utility Model Content

[0005] The purpose of this invention is to provide a durability testing device for warehouse vehicles to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A durability testing device for warehouse vehicles includes a switch control unit, a test bench, and a control console;

[0008] The switch control unit is connected to the upper end of the handle of the storage vehicle, and the switch control unit is provided with an actuator for pressing the button on the handle;

[0009] The test bench includes a vehicle body fixing part, a drive wheel support part, and a bump simulation part;

[0010] The control console is connected to the switch control unit and the signal of the warehouse vehicle under test.

[0011] As a further embodiment of this utility model: the switch control unit includes a housing, and the actuator is fixedly connected to the housing via a mounting base.

[0012] As a further embodiment of this utility model: the housing includes a front housing and a rear housing that are fixedly connected. A front yoke fixing plate is provided inside the front housing, and a rear cross plate fixing plate that is arranged in cooperation with the front yoke fixing plate is provided inside the rear housing. A yoke support limiting plate is provided at one end of the housing.

[0013] As a further embodiment of this utility model: the vehicle body fixing part includes side plates on both sides, and a first limiting plate and a second limiting plate are movably connected between the two side plates. The first limiting plate includes a plate body and a screw rod, and the screw rod is threadedly connected to the side plate. Adjustment grooves are horizontally arranged on the two side plates, and the two ends of the second limiting plate are movably connected to the side plates through the adjustment grooves.

[0014] As a further embodiment of this utility model: the drive wheel support includes brackets on both sides, and two rollers are rotatably connected inside the brackets. Both ends of the rollers are rotatably connected to the brackets through bearings.

[0015] As a further embodiment of this utility model: the bump simulation part includes a base plate and an upper end plate that is slidably connected to the base plate. The base plate is provided with a plurality of guide posts. The upper end plate is slidably connected to the base plate through the guide posts. A spring is provided between the upper end plate and the base plate. The base plate is provided with a drive assembly for driving the upper end plate to move vertically.

[0016] As a further embodiment of this utility model: the control console is equipped with a control circuit, the control circuit includes a power supply and a timer KT connected to the power supply, the timer KT is connected to a counter J, the timer KT and the counter J are connected to an intermediate relay KA1, the power supply is connected to an AC-DC converter, the output terminal of the AC-DC converter is connected to the power supply of the storage vehicle through the switch of the intermediate relay KA1, the control console is equipped with a detection component, and the control console is connected to an alarm device.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. This application provides a more efficient method for verifying the overall reliability of a warehouse vehicle and a method for verifying its components by controlling automatic testing with a test bench;

[0019] 2. By setting up a test device, this application can verify the basic functions and major components of the vehicle through automatic testing controlled by the test bench. Compared with road testing, it saves space, manpower and material resources, greatly improves R&D efficiency, and makes product verification more thorough.

[0020] 3. This application can test the entire or partial components of the warehouse vehicle, improving its versatility. Compared to the current situation where the entire machine must be installed and verified manually without a separate verification test bench and test method, this application provides means and test methods for verifying the reliability of the controller and motor separately, improving the efficiency of reliability verification of this component.

[0021] 4. This application allows all functions to be controlled by a switch. The reliability verification of each component is carried out by actually installing the whole machine. The parameters such as the current and voltage changes during the process are consistent with the actual working conditions.

[0022] 5. This application, by incorporating a bumping device, can improve the testing of warehouse vehicles under a wider range of working conditions; Attached Figure Description

[0023] Figure 1 , Figure 2 This is a schematic diagram showing the experimental setup in use in this embodiment;

[0024] Figure 3 This is a schematic diagram of the switch control unit structure in this embodiment;

[0025] Figure 4 This is a schematic diagram of the housing structure of the switch control unit in this embodiment;

[0026] Figure 5 This is a schematic diagram of the vehicle body fixing part structure in this embodiment;

[0027] Figure 6 This is a schematic diagram of the drive wheel support structure in this embodiment;

[0028] Figure 7 This is a schematic diagram of the bump simulation unit structure in this embodiment;

[0029] Figure 8 , Figure 9 , Figure 10 , Figure 11 This is a schematic diagram of the control system principle in this embodiment;

[0030] Figure 12 This is a schematic diagram of the control method flow in this embodiment;

[0031] Figure 13 This is a schematic diagram of the control system circuit in this embodiment.

[0032] In the diagram: 1-Switch control unit, 11-Housing, 111-Front housing, 112-Rear housing, 113-Front handle fixing plate, 114-Rear handle fixing plate, 115-Handle support limit plate, 12-Mounting seat, 13-Actuating element, 2-Car body fixing unit, 21-Side plate, 22-First limit plate, 23-Second limit plate, 24-Adjustment groove, 3-Drive wheel support unit, 31-Bracket, 32-Bearing, 33-Roller, 34-Sealing plate, 4-Bump simulation unit, 41-Upper end plate, 42-Guide column, 43-Spring, 44-Drive assembly. 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0034] Please see Figure 1-2 In this embodiment of the utility model, a storage vehicle durability testing device includes a switch control unit 1, a test bench, and a control console.

[0035] like Figure 3-4 As shown, the switch control unit 1 is connected to the upper end of the handle of the storage vehicle. The switch control unit 1 includes a housing 11. The switch control unit 1 is provided with an actuator 13 for pressing the button on the handle. In this embodiment, the actuator 13 is an electric or pneumatic finger used to operate the button on the handle. The actuator 13 is controlled by a control console. The actuator 13 is fixedly connected to the housing 11 via a mounting base 12. The housing 11 includes a front housing 111 and a rear housing 112 fixedly connected. A front handle fixing plate 113 is provided in the front housing 111, and a rear cross plate fixing plate 114 arranged in conjunction with the front handle fixing plate 113 is provided in the rear housing 112. A handle support limiting plate 115 is provided at one end of the housing 11.

[0036] The test bench includes a vehicle body fixing part 2, a drive wheel support part 3, and a bump simulation part 4. In this embodiment, as shown... Figure 5 As shown, the vehicle body fixing part 2 includes side plates 21 on both sides. A first limiting plate 22 and a second limiting plate 23 are movably connected between the two side plates 21. The first limiting plate 22 includes a plate body and a screw. The screw is threadedly connected to the side plate 21. By rotating the screw, the position of the first limiting plate 22 inside the side plate 21 can be adjusted, thereby accommodating warehouse vehicles of different widths. Adjustment grooves 24 are horizontally arranged on the two side plates 21. The two ends of the second limiting plate 23 are movably connected to the side plates 21 through the adjustment grooves 24. In this embodiment, two second limiting plates 23 are provided. The distance between the two second limiting plates 23 can be adjusted through the adjustment grooves 24, thereby accommodating warehouse vehicles of different sizes. Figure 6 As shown, the drive wheel support 3 includes brackets 31 on both sides, and two rollers 33 are rotatably connected inside the brackets 31. Both ends of the rollers 33 are rotatably connected to the brackets 31 via bearings 32; Figure 7 As shown, the bump simulation unit 4 includes a base plate and an upper end plate 41 that is slidably connected to the base plate. Multiple guide posts 42 are provided on the base plate. The upper end plate 41 is slidably connected to the base plate through the guide posts 42. A spring 43 is provided between the upper end plate 41 and the base plate. A drive assembly 44 for driving the upper end plate 41 to move vertically is provided on the base plate.

[0037] like Figure 13 As shown, the control console is connected to the switch control unit and the warehouse vehicle under test. The control console contains a control circuit, which includes a power supply and a timer KT connected to the power supply. The timer KT is connected to a counter J, and an intermediate relay KA1 is connected between the timer KT and the counter J. The power supply is connected to an AC-DC converter. The output of the AC-DC converter is connected to an air valve or electrical power supply through the switch of the intermediate relay KA1. The air valve controls the durability test of the vehicle components via the control switch, or the electrical power supply directly controls the durability test of the vehicle components. Alternatively, the console may be equipped with a detection component, and the control console may be connected to an alarm device.

[0038] A method for durability testing of warehouse vehicles includes the following steps:

[0039] Step 1: Place the warehouse vehicle to be tested on the test bench, install the switch control unit 1 on the handle of the warehouse vehicle, fix the handle by the front handle fixing plate 113 and the rear handle fixing plate 114, limit the handle support by the handle support limit plate 115, fix the warehouse vehicle by the vehicle body fixing unit 2, and support the drive wheel of the warehouse vehicle by the drive wheel support unit 3.

[0040] Step 2: Input the test mode and test parameters through the console. The test modes include whole vehicle test mode and warehouse vehicle component test mode. The warehouse vehicle component test modes include warehouse vehicle switch test mode, drive system hydraulic system test mode, and controller test mode. Select a specific component of the whole vehicle forks to be tested according to the output parameters.

[0041] The test parameters include:

[0042] Vehicle motion parameters: frequency of take-off and landing, driving motion, motion cycle, and operating frequency of horn and other switches;

[0043] Total number of trials M;

[0044] Test monitoring parameter limits:

[0045] Operating current and voltage of the vehicle's electronic control system, motors, instruments, batteries, related switches, and related sensors;

[0046] Vehicle electronic control and motor temperatures;

[0047] Switch pressing pressure;

[0048] Switch operating current / voltage;

[0049] Drive wheel rotation speed;

[0050] Fork lifting speed / fork height;

[0051] Hydraulic system pressure and temperature.

[0052] Step 3: Control the warehouse vehicle's actions according to the test mode and parameters, and record the warehouse vehicle's status through the control console, while also recording the current test as the Kth test.

[0053] Step 4: Determine if K equals M. If yes, proceed to step 6. Otherwise, check the console to determine if there are any abnormal parameters. The console monitors the tested components in real time, such as the drive wheel rotation speed, fork lifting speed, and hydraulic system pressure. First, set the normal parameter thresholds according to different vehicle models. Then, compare the real-time monitored parameters with the normal parameter thresholds. If the parameters exceed the normal threshold range for a certain period of time (the time can be set according to the specific vehicle model, such as 1-2 seconds), the parameters are considered abnormal.

[0054] If there is a parameter error, issue a warning and proceed to step 6; otherwise, proceed to step 5.

[0055] Step 5: Set K = K + 1, and then execute step 3;

[0056] Step 6: End the experiment;

[0057] Where: K is a natural number greater than or equal to 1.

[0058] Example 1:

[0059] The storage vehicle durability testing device of this utility model was applied to the overall reliability verification of a certain type of 2t walk-behind pallet truck.

[0060] Place the 2t pallet truck on the test bench and fix all parts of the truck according to step 1 above;

[0061] Input test parameters through the console, including vehicle motion parameters: frequency of take-off and landing, frequency of driving actions, action cycle, and operating frequency of horn and other switches; and the operating range of each monitoring parameter.

[0062] Based on the test parameters, the pallet truck's movement is controlled by manipulating the switch on the control handle, and the pallet truck's status and the number of tests are recorded via the control console until the test ends.

[0063] After several attempts, the drive wheel speed was monitored to be 0, a warning was issued, and all test parameters were recorded at this time.

[0064] Manual inspection revealed that the vehicle controller was reporting a fault code, rendering the vehicle inoperable.

[0065] Example 2:

[0066] The durability testing device for warehouse vehicles of this invention was applied to the reliability verification of the handle switch of a certain type of 2t walk-behind pallet truck.

[0067] Place the 2t pallet truck on the test bench, install the switch control unit 1 onto the handle of the warehouse truck, fix the handle with the front handle fixing plate 113 and the rear handle fixing plate 114, and limit the handle support with the handle support limit plate 115; disconnect the switch output terminal from the vehicle controller and connect it directly to the electronic load.

[0068] Input test parameters through the console, including switch operating current, actuator operating frequency, and pressing force.

[0069] Based on the test parameters, the test parameters were recorded by manipulating the switch on the control stick and recording the test parameters on the control console until the test ended.

[0070] After multiple tests, it was found that the switch pressing force increased and exceeded the limit, so a warning was issued and all test parameters were recorded at this time.

[0071] After adjustment, the switch pressing force was restored to within the limit, and the test continued;

[0072] After multiple tests, no current was found in a certain electronic load, a warning was issued, and all test parameters were recorded at this time.

[0073] Upon inspection, the lifting switch was found to be damaged, and the test was terminated.

[0074] Example 3:

[0075] The storage vehicle durability testing device of this utility model was applied to the reliability verification of the pump station of a certain type of 2t walk-behind pallet truck.

[0076] Place the 2t pallet truck on the test bench and connect the control console directly to the vehicle pump station;

[0077] Input test parameters via the console, including pump motor operating current and temperature, hydraulic system pressure and temperature, fork lifting speed / real-time height, etc.

[0078] Based on the test parameters, the pump station was controlled to rise and fall via the control console, and the test parameters were recorded until the test ended.

[0079] After multiple trials, the preset number of trials is reached, and the trial ends.

[0080] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0081] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A warehouse truck endurance test device, characterized by, It includes switch control part (1), test bench, control console; The switch control part (1) is connected with the upper end of the tiller of the warehouse car, and an execution element (13) for pressing the button on the tiller is arranged in the switch control part (1); The test bench comprises a vehicle body fixing part (2), a driving wheel supporting part (3) and a bump simulation part (4), the bump simulation part (4) comprises a bottom plate and an upper end plate (41) slidably connected with the bottom plate, and a plurality of guide columns (42) are arranged on the bottom plate; The control console is in signal communication with the switch control part and the warehouse car to be tested.

2. The endurance test device for a warehouse truck according to claim 1, characterized in that, The switch control part (1) comprises a shell (11), and the execution element (13) is fixedly connected in the shell (11) through a mounting seat (12).

3. The endurance test device for a warehouse truck according to claim 2, characterized in that, The shell (11) comprises a front shell (111) and a rear shell (112) fixedly connected, a front tiller fixing plate (113) is arranged in the front shell (111), a rear cross plate fixing plate (114) is arranged in the rear shell (112) and matched with the front tiller fixing plate (113), and a tiller support limiting plate (115) is arranged at one end of the shell (11).

4. The endurance test apparatus for a warehouse truck according to claim 1, wherein The vehicle body fixing part (2) comprises side plates (21) on both sides, first and second limiting plates (22) and (23) movably connected between the side plates (21), the first limiting plate (22) comprises a plate body and a screw rod, the screw rod is threadedly connected with the side plates (21), adjusting grooves (24) are horizontally arranged on the side plates (21), and the second limiting plate (23) is movably connected with the side plates (21) through the adjusting grooves (24).

5. The endurance test apparatus for a warehouse truck according to claim 1, wherein The driving wheel supporting part (3) comprises brackets (31) on both sides, two roller cylinders (33) are rotatably connected in the brackets (31), and both ends of the roller cylinder (33) are rotatably connected with the bracket (31) through bearings (32).

6. The endurance test apparatus for a warehouse vehicle according to claim 1, wherein The upper end plate (41) is slidably connected with the bottom plate through the guide columns (42), springs (43) are arranged between the upper end plate (41) and the bottom plate, and a driving assembly (44) for driving the upper end plate (41) to move vertically is arranged on the bottom plate.

7. The endurance test device for a warehouse vehicle according to claim 1, wherein The control console is provided with a control circuit, the control circuit comprises a power supply, a timer KT connected with the power supply, a counter J connected with the timer KT, an intermediate relay KA1 connected between the timer KT and the counter J, an alternating current-direct current converter connected with the power supply, an output end of the alternating current-direct current converter in communication with the power supply of the whole warehouse car through the switch of the intermediate relay KA1, a detection assembly arranged on the control console, and an alarm device connected with the control console.

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