Storage vehicle endurance test device and test method

Abstract

The invention 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] The invention relates to the technical field of storage vehicle testing, and in particular to a storage vehicle durability testing device and a testing method. Background Art

[0002] Pallet trucks, pallet stackers, order pickers and other storage trucks, due to the immature reliability verification system of the whole machine in the industry, the relevant standards only have 200h road test intensive test requirements, and there are no relevant verification standards for components;

[0003] Therefore, the reliability of the whole machine and its components of new storage truck products is often not sufficient. Most problems can only be discovered through user feedback in the market after the product is launched. At this time, it is too late to find the problem, and the subsequent economy and product confidence have been affected.

[0004] At the same time, when replacing new parts of the product, such as controllers, motors, etc., there are no professional testing methods and test benches. The verification method also needs to be strengthened through road tests. There are also deficiencies in the test intensity and verification adequacy. Moreover, road tests require a lot of manpower and material resources and require a larger venue. Summary of the invention

[0005] The object of the present invention is to provide a storage vehicle durability test device and a test method to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A storage vehicle durability test device comprises a switch control unit, a test bench and a control console;

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

[0009] The test bench includes a vehicle body fixing portion, a driving wheel supporting portion, and a bump simulation portion;

[0010] The console is in signal communication with the switch control unit and the storage vehicle to be tested.

[0011] As a further solution of the present invention: the switch control unit includes a shell, and the actuator is fixedly connected to the shell through a mounting seat.

[0012] As a further solution of the present invention: the shell includes a front shell and a rear shell that are fixedly connected, the front shell is provided with a front navigation handle fixing plate, the rear shell is provided with a rear cross plate fixing plate that is arranged to cooperate with the front navigation handle fixing plate, and one end of the shell is provided with a navigation handle support limit plate.

[0013] As a further solution of the present invention: the vehicle body fixing part includes side panels on both sides, and a first limit plate and a second limit plate are movably connected between the side panels on both sides, the first limit plate includes a plate body and a screw, and the screw is threadedly connected to the side panel, and adjustment grooves are horizontally arranged on the side panels on both sides, and both ends of the second limit plate are movably connected to the side panels through the adjustment grooves.

[0014] As a further solution of the present invention: the driving wheel support portion includes brackets on both sides, two rollers are rotatably connected in the brackets, and both ends of the rollers are rotatably connected to the brackets through bearings.

[0015] As a further solution of the present invention: the bump simulation part includes a base plate and an upper end plate slidably connected to the base plate up and down, a plurality of guide columns are arranged on the base plate, the upper end plate is slidably connected to the base plate up and down through the guide columns, a spring is arranged between the upper end plate and the base plate, and a driving component for driving the upper end plate to move vertically is arranged on the base plate.

[0016] As a further solution of the present invention: a control circuit is provided in the console, 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 end of the AC-DC converter is connected to the power supply of the storage vehicle through the switch of the intermediate relay KA1, the console is provided with a detection component, and the console is connected to an alarm device.

[0017] A storage vehicle durability test method comprises the following steps:

[0018] Step 1: Based on the road test and actual working condition investigation, collect vehicle parameters, including the total number of tests M, relevant action parameters and frequency and status, component working frequency, and working current of each component;

[0019] Step 2: Place the storage vehicle to be tested on the test bench;

[0020] Step 3: Input the test parameters through the console. The test parameters include the action parameters and frequency of the storage vehicle, the total number of tests M, and the working current range of the components (for fault determination);

[0021] Step 4: Control the movement of the storage vehicle according to the test parameters, and record the status of the storage vehicle through the console, such as the current number of movements, the real-time current / voltage of each main component, etc., and record the current test as the Kth time;

[0022] Step 5, determine whether K is equal to M. If so, execute 6. If not, determine whether there is a parameter abnormality through the console. If there is a parameter abnormality, issue a warning and execute step 6. If there is no parameter abnormality, execute step 5.

[0023] Step 6: Set K=K+1 and execute step 3;

[0024] Step 7: End the test;

[0025] Wherein: K is a natural number greater than or equal to 1.

[0026] As a further solution of the present invention: in step 1, the switch control unit is installed on the navigation handle of the storage vehicle, the storage vehicle is fixed by the vehicle body fixing unit, and the drive wheel of the storage vehicle is supported by the drive wheel supporting unit:

[0027] As a further solution of the present invention: the test parameters in step 2 include a whole vehicle test mode and a warehouse truck component test mode, and the warehouse truck component test mode includes a warehouse truck switch test mode, a drive system hydraulic system test mode, and a controller test mode.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] 1. This application provides a more efficient method for verifying the reliability of a whole storage vehicle and a method for verifying its components by controlling the automatic test on a test bench;

[0030] 2. This application sets up a test device, which can verify the basic functions and main components of the vehicle by controlling the automatic test on the test bench. Compared with the road test, it saves space, manpower and material resources, greatly improves the R&D efficiency, and verifies the product more fully;

[0031] 3. This application can test the whole or partial parts of the storage vehicle, which improves the general performance of this application; compared with the current situation where the whole machine must be installed and verified by manpower without a separate verification test bench and test method, this application provides a means and test method for separate reliability verification of the controller and motor, thereby improving the reliability verification efficiency of the component;

[0032] 4. This application can control all functions through switches, and the reliability verification of each component is actually carried out on the whole machine. The parameters such as current and voltage changes during the process are consistent with the actual working conditions;

[0033] 5. This application can improve the testing of storage vehicles under more different working conditions by setting up a bumping device; BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 , Figure 2This is a schematic diagram of the use status of the test device of this embodiment;

[0035] Figure 3 This is a schematic diagram of the structure of the switch control unit of this embodiment;

[0036] Figure 4 This is a schematic diagram of the housing structure of the switch control unit of this embodiment;

[0037] Figure 5 This is a schematic diagram of the structure of the vehicle body fixing part of this embodiment;

[0038] Figure 6 This is a schematic diagram of the structure of the driving wheel support part of this embodiment;

[0039] Figure 7 This is a schematic diagram of the structure of the bump simulation part of this embodiment;

[0040] Figure 8 , Fig. 9 , Fig.10 , Fig.11 This is a schematic diagram of the control system principle of this embodiment;

[0041] Fig.12 This is a flow chart of the control method of this embodiment;

[0042] Fig.13 Schematic diagram of the control system circuit of this embodiment.

[0043] In the figure: 1-switch control part, 11-shell, 111-front shell, 112-rear shell, 113-front navigation handle fixing plate, 114-rear navigation handle fixing plate, 115-navigation handle pillar limiting plate, 12-mounting seat, 13-actuator, 2-body fixing part, 21-side plate, 22-first limiting plate, 23-second limiting plate, 24-adjusting groove, 3-driving wheel supporting part, 31-bracket, 32-bearing, 33-roller, 34-sealing plate, 4-bumping simulation part, 41-upper end plate, 42-guide column, 43-spring, 44-driving assembly. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] See also Figure 1-2 In an embodiment of the present invention, a storage vehicle durability test device includes a switch control unit 1, a test bench, and a control console.

[0046] like Figure 3-4 As shown, the switch control unit 1 is connected to the upper end of the navigation handle of the storage vehicle. The switch control unit 1 includes a housing 11. An actuator 13 for pressing a button on the navigation handle is provided in the switch control unit 1. In this embodiment, the actuator 13 is an electric or airway finger, which is used to operate the case on the navigation handle. The actuator 13 is controlled by the console. The actuator 13 is fixedly connected to the housing 11 through a mounting seat 12. The housing 11 includes a front housing 111 and a rear housing 112 that are fixedly connected. A front navigation handle fixing plate 113 is provided in the front housing 111. A rear horizontal plate fixing plate 114 arranged in cooperation with the front navigation handle fixing plate 113 is provided in the rear housing 112. A navigation handle support limiting plate 115 is provided at one end of the housing 11.

[0047] The test bench includes a vehicle body fixing portion 2, a driving wheel supporting portion 3, and a bump simulation portion 4. In this embodiment, Figure 5 As shown, the vehicle body fixing part 2 includes side panels 21 on both sides, and a first limiting plate 22 and a second limiting plate 23 are movably connected between the side panels 21 on both sides. The first limiting plate 22 includes a plate body and a screw, and the screw is threadedly connected to the side panels 21. The position of the first limiting plate 22 on the inner side of the side panels 21 can be adjusted by rotating the screw, so that it can adapt to storage vehicles of different widths. Adjustment grooves 24 are horizontally arranged on the side panels 21 on both sides, and both ends of the second limiting plate 23 are movably connected to the side panels 21 through the adjustment grooves 23. In this embodiment, two second limiting plates 23 are provided, and the distance between the two second limiting plates 23 can be adjusted through the adjustment grooves 24, so that it can adapt to storage vehicles of different sizes; as shown in FIG. Figure 6 As shown, the driving wheel support part 3 includes brackets 31 on both sides, and two rollers 33 are rotatably connected in the brackets 31. Both ends of the rollers 33 are rotatably connected to the brackets 31 through bearings 32; Figure 7 As shown, the bump simulation part 4 includes a base plate and an upper end plate 41 slidably connected to the base plate up and down, a plurality of guide columns 42 are arranged on the base plate, the upper end plate 41 is slidably connected to the base plate up and down through the guide columns 42, a spring 43 is arranged between the upper end plate 41 and the base plate, and a driving assembly 44 for driving the upper end plate 41 to move vertically is arranged on the base plate.

[0048] like Fig.13 As shown, the control console is connected with the switch control unit and the storage vehicle to be tested. The control console is provided with 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. 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 end of the AC-DC converter is connected to a gas valve or electrical power through the switch of the intermediate relay KA1. The gas valve realizes the endurance test of the vehicle components controlled by the control switch on the vehicle, and the endurance test of the vehicle components can also be directly controlled by electrical power. Or the console is provided with a detection component, and the console is connected to an alarm device.

[0049] A storage vehicle durability test method comprises the following steps:

[0050] Step 1, place the storage vehicle to be tested on the test bench, install the switch control unit 1 on the navigation handle of the storage vehicle, fix the navigation handle through the front navigation handle fixing plate 113 and the rear navigation handle fixing plate 114, limit the navigation handle pillar through the navigation handle pillar limiting plate 115, fix the storage vehicle through the vehicle body fixing part 2, and support the driving wheel of the storage vehicle through the driving wheel supporting part 3;

[0051] Step 2: Input the test mode and test parameters through the console, wherein the test mode includes the whole vehicle test mode and the warehouse vehicle component test mode, and the warehouse vehicle component test mode includes the warehouse vehicle switch test mode, the drive system hydraulic system test mode, and the controller test mode. According to the output parameters, select a certain component of the whole vehicle fork to be tested;

[0052] The test parameters include:

[0053] Vehicle action parameters: take-off and landing, driving action frequency, action cycle, horn and other switch working frequency;

[0054] The total number of trials M;

[0055] Test monitoring parameter limits:

[0056] The operating current and voltage of the vehicle's electronic control, motor, instrument, battery, related switches, and related sensors;

[0057] Vehicle electronic control and motor temperature;

[0058] Switch pressing force;

[0059] Switch operating current / voltage;

[0060] Driving wheel rotation speed;

[0061] Fork lifting speed / fork height;

[0062] Hydraulic system pressure, temperature.

[0063] Step 3: Control the movement of the storage vehicle according to the test mode and parameters, and record the status of the storage vehicle through the console, and record the current test as the Kth time;

[0064] Step 4, determine whether K is equal to M. If so, execute 6. If not, determine whether there is a parameter abnormality through the console. The console monitors the test component in real time, such as the rotation speed of the drive wheel, the lifting speed of the fork, and the pressure of the hydraulic system. First, set the normal parameter threshold according to different vehicle models, and then compare the real-time monitored parameters with the normal parameter threshold. If it exceeds the normal threshold range for a certain period of time, the time can be set according to the specific vehicle model, such as 1-2s. If it exceeds the normal parameter threshold in a short time, it is considered that the parameter is abnormal;

[0065] If there is a parameter abnormality, a warning is issued and step 6 is executed. If there is no parameter abnormality, step 5 is executed.

[0066] Step 5: Set K=K+1 and execute step 3;

[0067] Step 6: End the test;

[0068] Wherein: K is a natural number greater than or equal to 1.

[0069] Embodiment 1:

[0070] The storage vehicle durability test device of the present invention is applied to the whole machine reliability verification of a certain type of 2t walk-behind pallet truck.

[0071] Place the 2t pallet truck on the test bench and fix all parts of the truck according to step 1 above;

[0072] Input the test parameters through the console, including the vehicle action parameters: take-off and landing, driving action frequency, action cycle, horn and other switch working frequency; each monitoring parameter working range.

[0073] According to the test parameters, the movement of the pallet truck is controlled by operating the switch on the handle, and the status of the pallet truck and the number of tests are recorded through the console until the test is completed.

[0074] After XX times, the driving wheel speed is monitored to be 0, a warning is issued and all test parameters at this time are recorded.

[0075] After manual inspection, it was found that the vehicle controller reported XXX fault code and the vehicle could not work.

[0076] Embodiment 2:

[0077] The storage vehicle durability test device of the present invention is applied to the reliability verification of the navigation handle switch of a certain type of 2t walk-behind pallet truck.

[0078] Place the 2t pallet truck on the test bench, install the switch control unit 1 on the handle of the storage truck, fix the handle by the front handle fixing plate 113 and the rear handle fixing plate 114, and limit the handle support by the handle support support limit plate 115; disconnect the switch output terminal from the vehicle controller and directly connect it to the electronic load;

[0079] The test parameters are input through the console, including switch operating current, actuator operating frequency and pressing force, etc.

[0080] According to the test parameters, operate the switches on the handle and record the test parameters through the console until the test is completed.

[0081] After XX tests, it was found that the switch pressing force increased and exceeded the limit, a warning was issued and all test parameters at this time were recorded.

[0082] After debugging, restore the switch pressing force to within the limit and continue the test;

[0083] After XXX tests, there is no current on a certain electronic load, a warning is issued and all test parameters at this time are recorded.

[0084] After testing, the lifting switch was found to be damaged and the test ended.

[0085] Embodiment 3:

[0086] The storage vehicle durability test device of the present invention is applied to the reliability verification of a pump station of a certain type of 2t walk-behind pallet truck.

[0087] Place the 2t pallet truck on the test bench and connect the console directly to the vehicle pump station;

[0088] Input the test parameters through the console, including pump motor operating current and temperature, hydraulic system pressure and temperature, fork lifting speed / real-time height, etc.

[0089] According to the test parameters, the pump station is controlled to rise and fall through the console, and the test parameters are recorded until the test is completed.

[0090] After XX tests, the preset number of times is reached and the test ends.

[0091] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0092] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A storage vehicle durability test device, characterized in that: It comprises a switch control unit (1), a test bench and a control console; The switch control unit (1) is connected to the upper end of the navigation handle of the storage vehicle, and an actuator (13) for pressing a button on the navigation handle is provided in the switch control unit (1); The test bench comprises a vehicle body fixing portion (2), a driving wheel supporting portion (3), and a bump simulation portion (4); The console is in signal communication with the switch control unit and the storage vehicle to be tested.

2. A storage vehicle durability test device according to claim 1, characterized in that: The switch control unit (1) comprises a housing (11), and the actuator (13) is fixedly connected to the housing (11) via a mounting seat (12).

3. A storage vehicle durability test device according to claim 2, characterized in that: The shell (11) comprises a front shell (111) and a rear shell (112) which are fixedly connected, a front navigation handle fixing plate (113) is arranged in the front shell (111), a rear cross plate fixing plate (114) arranged in coordination with the front navigation handle fixing plate (113) is arranged in the rear shell (112), and a navigation handle support limiting plate (115) is arranged at one end of the shell (11).

4. A storage vehicle durability test device according to claim 1, characterized in that: The vehicle body fixing part (2) comprises side plates (21) on both sides, wherein a first limiting plate (22) and a second limiting plate (23) are movably connected between the side plates (21) on both sides, wherein the first limiting plate (22) comprises a plate body and a screw, wherein the screw is threadedly connected to the side plates (21), and adjustment grooves (24) are horizontally arranged on the side plates (21) on both sides, and the two ends of the second limiting plate (23) are movably connected to the side plates (21) via the adjustment grooves (23).

5. The storage vehicle durability test device according to claim 1, characterized in that: The driving wheel support part (3) comprises brackets (31) on both sides, two rollers (33) are rotatably connected inside the brackets (31), and both ends of the rollers (33) are rotatably connected to the brackets (31) via bearings (32).

6. A storage vehicle durability test device according to claim 1, characterized in that: The bump simulation part (4) includes a base plate and an upper end plate (41) connected to the base plate in an up-and-down sliding manner, a plurality of guide columns (42) are provided on the base plate, the upper end plate (41) is connected to the base plate in an up-and-down sliding manner via the guide columns (42), a spring (43) is provided between the upper end plate (41) and the base plate, and a driving component (44) for driving the upper end plate (41) to move vertically is provided on the base plate.

7. The storage vehicle durability test device according to claim 1, characterized in that: A control circuit is provided in the console, and 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 end of the AC-DC converter is connected to the power supply of the storage vehicle through the switch of the intermediate relay KA1, the console is provided with a detection component, and the console is connected to an alarm device.

8. A storage vehicle durability test method, characterized in that: The following steps are involved: Step 1: Place the storage vehicle to be tested on the test bench; Step 2: Input the test parameters through the console, the test parameters include the storage vehicle action parameters and the total number of tests M; Step 3: Control the movement of the storage vehicle according to the test parameters, and record the status of the storage vehicle through the console, and record the current test as the Kth time; Step 4: Determine whether K is equal to M. If so, execute 6. If not, determine whether there is a parameter abnormality through the console. If there is a parameter abnormality, issue a warning and execute step 6. If there is no parameter abnormality, execute step 5. Step 5: Set K=K+1 and execute step 3; Step 6: End the test; Wherein: K is a natural number greater than or equal to 1.

9. A storage vehicle durability test method according to claim 8, characterized in that: In the step 1, the switch control unit (1) is installed on the handle of the storage vehicle, the storage vehicle is fixed by the vehicle body fixing unit (2), and the drive wheel of the storage vehicle is supported by the drive wheel supporting unit (3).

10. A storage vehicle durability test method according to claim 8, characterized in that: The test parameters in step 2 include a whole vehicle test mode and a warehouse truck component test mode, and the warehouse truck component test mode includes a warehouse truck switch test mode, a drive system hydraulic system test mode, and a controller test mode.

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