A shuttle vehicle testing device

Abstract

The present invention discloses a shuttle testing device. The shuttle testing device includes a frame, a track assembly, a wheel test assembly, and a load assembly. The track assembly includes two tracks. The shuttle enters and exits the test area of ​​the frame through the track assembly. The test unit of the wheel test assembly is movably arranged on the outside of the track along a first direction. The test unit includes a test mechanism and two roller shafts spaced apart along a second direction. The two roller shafts are configured to move closer to each other to lift the wheels off the track and move away from each other to release the wheels onto the track. The shuttle can push and pull the load of the load assembly through a fork. The shuttle testing device can enable the shuttle to operate under a certain load pressure, and the performance parameters of the shuttle during operation can be obtained through the test mechanism. The shuttle testing device is not only compact in structure and occupies a small area, but also has low manufacturing costs and is easy to carry.

Description

Technical Field

[0001] The present invention relates to the technical field of shuttle vehicle testing, and in particular to a shuttle vehicle testing device. Background Art

[0002] With the rapid development of the logistics industry, unmanned warehouses are becoming increasingly common. Shuttles are machines suitable for use in the three-dimensional racking of unmanned warehouses. After production, these shuttles are inspected and subjected to fatigue testing to determine if they meet operational requirements.

[0003] Testing shuttles requires corresponding 3D racks to meet testing requirements. However, due to the high production volume of shuttles, building a dedicated 3D rack specifically for testing would result in high testing costs. Furthermore, building a 3D rack would require a sufficiently large site and a sufficiently high factory building to accommodate the racks, further increasing testing costs. Furthermore, to conduct the test, testers would need to climb up and down the racks, posing a significant safety hazard.

[0004] Therefore, how to propose a shuttle vehicle testing device that can solve the above problems is a technical problem that urgently needs to be solved. Summary of the Invention

[0005] The object of the present invention is to provide a shuttle vehicle testing device, which is not only compact in structure and occupies a small area, but also has low manufacturing cost and is easy to carry.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A shuttle testing device comprises: a frame, on which a test area and a load area are provided; a track assembly, arranged in the test area, the track assembly comprising two tracks arranged at intervals along a first direction, the tracks arranged along a second direction, the second direction being perpendicular to the first direction, a shuttle enters and exits the test area via the track assembly, and the wheels of the shuttle are placed on the tracks; a wheel train testing assembly, comprising a plurality of test units, the plurality of test units being arranged in a one-to-one correspondence with the plurality of wheels, the test units being movably arranged on the outside of the tracks along the first direction, the test units comprising a testing mechanism and two roller shafts arranged at intervals along the second direction, the two roller shafts being configured to be able to approach each other to lift the wheels off the tracks and to move away from each other to release the wheels onto the tracks, the testing mechanism being used to test the performance parameters of the shuttle that has left the track during operation; a load assembly, arranged in the load area, the load assembly comprising a load member, and the shuttle can push and pull the load member by a fork.

[0008] Preferably, the test unit also includes a rotation drive mechanism, an adjusting screw, two nut seats and two roller shaft seats, the adjusting screw is arranged along the second direction, and the adjusting screw is provided with a first thread structure and a second thread structure with opposite rotation directions, the rotation drive mechanism can drive the adjusting screw to rotate, the two nut seats are respectively threadedly connected to the first thread structure and the second thread structure and respectively form a screw nut pair, the two roller shaft seats are fixedly connected to the two nut seats in a one-to-one correspondence, and the two roller shafts are rotatably connected to the two roller shaft seats in a one-to-one correspondence.

[0009] Preferably, the rotary drive mechanism includes a driving motor, a driving wheel, a driven wheel and a transmission belt. The motor shaft of the driving motor is connected to the driving wheel, the driven wheel is sleeved on the adjusting screw, and the transmission belt is sleeved on the driving wheel and the driven wheel.

[0010] Preferably, the shuttle testing device further comprises a linear drive mechanism, and the linear drive mechanism is used to drive the wheel train testing assembly to move along the first direction toward or away from the track.

[0011] Preferably, the shuttle testing device also includes a mobile frame, which is arranged on the outside of the track along the first direction, and the testing unit is placed in the mobile frame and is limitedly connected to the mobile frame in the first direction; the linear drive mechanism includes a first electric push rod, the shell of the first electric push rod is fixedly connected to the mobile frame, and the telescopic rod of the first electric push rod is connected to the outer surface of the track.

[0012] Preferably, a guide slot is provided on the movable frame along the second direction, a guide slider is provided on the roller shaft seat, and the guide slider is placed in the guide slot.

[0013] Preferably, the load assembly further includes a second electric push rod and a gravity controller, the telescopic rod of the second electric push rod is vertically arranged, the gravity controller is arranged between the telescopic rod of the second electric push rod and the load member, and the load pressure exerted by the load member on the shuttle car is configured to be adjustable.

[0014] Preferably, the load assembly further includes a load guide rail, a load slider and a connecting plate, the load guide rail is arranged on the frame along the first direction, the connecting plate is arranged below the load guide rail, the load slider is arranged on the connecting plate, and the load slider is slidingly connected to the load guide rail, the housing of the second electric push rod is fixedly connected to the connecting plate, and the telescopic rod of the second electric push rod is arranged through the connecting plate.

[0015] Preferably, the testing mechanism further comprises a signal encoder provided on one of the roller shafts of the testing unit; and / or the testing mechanism further comprises a torque controller provided on another roller shaft of the testing unit.

[0016] Preferably, there are two loading areas, which are located on both sides of the test area, and one loading assembly is provided in each loading area.

[0017] Beneficial effects of the present invention:

[0018] The present invention provides a shuttle testing device, which includes a frame, a track assembly, a wheel test assembly, and a load assembly. The track assembly includes two tracks, through which a shuttle enters and exits a test area, and the shuttle's wheels are placed on the tracks. A test unit of the wheel test assembly is movably disposed outside the tracks along a first direction. The test unit includes a testing mechanism and two roller shafts spaced apart along a second direction. The two roller shafts are configured to move toward each other to lift the wheels off the tracks and away from each other to release the wheels onto the tracks. The shuttle can push and pull the load of the load assembly using a fork. The shuttle testing device enables the shuttle to operate under a certain load pressure, and the test mechanism can be used to obtain the performance parameters of the shuttle during operation. The shuttle testing device is not only compact in structure and occupies a small area, but also has low manufacturing costs and is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the structure of the shuttle vehicle testing device provided by an embodiment of the present invention;

[0020] Figure 2 is a schematic diagram of a partial structure of a shuttle vehicle testing device provided by an embodiment of the present invention;

[0021] Figure 3 1 is a schematic structural diagram of a track provided by an embodiment of the present invention and two test units located on one side of the track at a certain angle;

[0022] Figure 4 1 is a schematic structural diagram of a track provided by an embodiment of the present invention and two test units located on one side of the track from another angle;

[0023] Figure 5 This is a schematic structural diagram of two test units located on one side of a track at a certain angle provided by an embodiment of the present invention;

[0024] Figure 6 This is a schematic structural diagram of two test units located on one side of a track provided by an embodiment of the present invention from another angle;

[0025] Figure 7 It is a structural diagram of a load assembly provided by an embodiment of the present invention.

[0026] In the picture:

[0027] 100, frame; 101, test area; 102, load area;

[0028] 200, track; 201, limit switch;

[0029] 300, test unit; 301, roller shaft; 302, adjusting screw; 3021, first thread structure; 3022, second thread structure; 303, nut seat; 304, roller shaft seat; 3041, guide slider; 3042, second slider; 305, drive motor; 306, driving pulley; 307, transmission belt; 308, driven pulley; 309, moving frame; 3091, guide chute; 3092, first slider; 310, first electric push rod; 311, signal encoder; 312, torque controller; 313, third slide rail; 314, second slide rail;

[0030] 400, load assembly; 401, load member; 402, second electric push rod; 403, gravity controller; 404, connecting plate; 405, load slider. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the terms "center," "up," "down," "left," "right," "vertical," "horizontal," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed or detachable connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention.

[0034] This embodiment provides a shuttle testing device that can test the performance of shuttles before they leave the factory, such as performing fatigue testing, to prevent shuttles from leaving the factory that fail to meet testing requirements. In this embodiment, the shuttle used for testing includes a body and a wheel train. The wheel train includes two wheels on the left side of the body and two wheels on the right side of the body, arranged in two rows and two columns. In addition to testing shuttles with four wheels, this shuttle testing device can also test shuttles with other numbers of wheels, which are not listed here.

[0035] like Figures 1 to 2 As shown, the shuttle test device includes a frame 100, a track assembly, a wheel train test assembly and a load assembly 400. Among them, the frame 100 is the main installation structure of the shuttle test device, which is formed by splicing plates and rods. A space for installing the track assembly, the wheel train test assembly and the load assembly 400 is formed inside the frame 100. The space is divided into a test area 101 and a load area 102 according to needs. The track assembly is arranged in the test area 101, the load assembly 400 is arranged in the load area 102, and the wheel train test assembly is arranged at the junction of the test area 101 and the load area 102. Specifically, the track assembly includes two tracks 200 spaced apart along a first direction, and each track 200 is arranged along a second direction, as shown in FIG. Figure 1As shown, the first direction is the direction shown by a in the figure, and the second direction is the direction shown by b in the figure, and the second direction is perpendicular to the first direction. The shuttle enters and exits the test area 101 through the track assembly. When the shuttle enters and exits the test area 101, the body of the shuttle is located between the two tracks 200, and the wheels of the shuttle are placed on the tracks 200. The wheel train test assembly includes a plurality of test units 300, and the plurality of test units 300 are arranged in a one-to-one correspondence with the plurality of wheels. In this embodiment, since the shuttle has four wheels, four test units 300 are provided, and the four test units 300 are arranged in two rows and two columns. The test units 300 are movably arranged on the outside of the tracks 200 along the first direction, so that they can approach or move away from the wheels of the shuttle. The testing unit 300 includes a testing mechanism and two roller shafts 301 spaced apart along a second direction. The two roller shafts 301 can move closer together to lift the wheels off the track 200 and move farther apart to release the wheels onto the track 200. The testing mechanism is used to test the performance parameters of a shuttle vehicle that has been derailed from the track 200. The load assembly 400 includes a load member 401, which the shuttle vehicle can push and pull using forks mounted on the load member. Optionally, the load pressure applied by the load member 401 to the shuttle vehicle can be adjusted based on actual needs. Alternatively, the load member 401 can be a storage box that can hold variable-weight cargo, thereby varying the load pressure applied to the shuttle vehicle. Of course, in other embodiments, the load member 401 can also be a weight block, with multiple weight blocks provided, each having different weights.

[0036] After the shuttle enters the test area 101 of the frame 100, the wheels on both sides of the vehicle body are respectively located above the two tracks 200. By bringing the roller shafts 301 closer to each other, the wheels can be lifted to a position away from the tracks 200, and a certain load pressure can be applied to the shuttle through the load member 401. By adjusting the load assembly 400, the load pressure applied by the load member 401 on the shuttle can be changed, so that the shuttle can run for a period of time under a certain load pressure. During the operation of the shuttle, the performance parameters of the shuttle can be obtained through the testing mechanism. Compared with the prior art that requires the special construction of three-dimensional shelves and the preparation of a sufficiently large site for the construction of three-dimensional shelves, the shuttle test device of this embodiment is not only compact in structure and occupies a small area, but also has low manufacturing costs and is easy to carry.

[0037] In this embodiment, if Figure 1As shown, there are two loading areas 102, which are located on both sides of the test area 101, and each loading area 102 is provided with a load assembly 400. Of course, in other embodiments, there may be only one loading area 102; or multiple test areas 101 may be provided at intervals along the second direction, with one loading area 102 provided on one side of each test area 101, or one loading area 102 provided on both sides of each test area 101, to enable simultaneous testing of multiple shuttle vehicles.

[0038] Since there are two wheels on the same side of the shuttle body, in order to correspond to the two wheels, the shuttle test device is provided with two test units 300 on the outside of each track 200. In this embodiment, the test units 300 on the outside of the two guide rails have the same structure. For the convenience of description, Figures 3 and 4 As shown, the following description will be made by taking two test units 300 located outside one of the guide rails as an example.

[0039] like Figures 3 to 6 As shown, in order to achieve the mutual approach or separation of the two roller shafts 301 included in each test unit 300, each test unit 300 further includes a rotation drive mechanism, an adjustment screw 302, two nut seats 303, and two roller shaft seats 304. Specifically, the adjustment screw 302 is arranged along the second direction, and is provided with a first thread structure 3021 and a second thread structure 3022 with opposite rotation directions. The rotation drive mechanism can drive the adjustment screw 302 to rotate, and the two nut seats 303 are respectively threadedly connected to the first thread structure 3021 and the second thread structure 3022 to form a screw-nut pair. The two roller shaft seats 304 are fixedly connected to the two nut seats 303 in a one-to-one correspondence, and the two roller shafts 301 are rotatably connected to the two roller shaft seats 304 in a one-to-one correspondence via bearings.

[0040] When the rotary drive mechanism drives the adjusting screw 302 to rotate forward, the two nut seats 303 in the same group approach each other, thereby moving the two roller shaft seats 304 and the corresponding roller shafts 301 in the same group closer together. The two roller shafts 301 approach the wheel from both sides and abut against the wheel. At this point, the two roller shafts 301 continue to move closer together to lift the wheel. When the rotary drive mechanism drives the adjusting screw 302 to rotate backward, the two nut seats 303 move away from each other, moving the two roller shaft seats 304 and the corresponding roller shafts 301 away from each other, causing the wheel to descend onto the track 200.

[0041] Optionally, in this embodiment, the rotary drive mechanism includes a drive motor 305, a driving pulley 306, a driven pulley 308, and a transmission belt 307. The motor shaft of the drive motor 305 is in transmission connection with the driving pulley 306, the driven pulley 308 is sleeved on the adjusting screw 302, and the transmission belt 307 is sleeved on the driving pulley 306 and the driven pulley 308. Of course, in other embodiments, the rotary drive mechanism may also include only the drive motor 305, and the motor shaft of the drive motor 305 and one end of the adjusting screw 302 are coaxially linked by a coupling.

[0042] Since the two test units 300 located on the same side of the track 200 include four roller shafts 301, in order to simplify the structure of the shuttle test device and reduce the manufacturing cost, in this embodiment, the same drive motor 305 and the same adjustment screw 302 are used to drive the four roller shafts 301 to rotate simultaneously. Specifically, Figure 3 As shown, two groups of first thread structures 3021 and second thread structures 3022 are provided on the adjusting screw 302, one group of first thread structures 3021 and second thread structures 3022 is provided at the left end of the adjusting screw 302, and the other group of first thread structures 3021 and second thread structures 3022 is provided at the right end of the adjusting screw 302, each thread structure is threadedly connected to a nut seat 303, each nut seat 303 is connected to a roller shaft seat 304, each roller shaft seat 304 is rotatably connected to a roller shaft 301, and the driven wheel 308 is connected to the middle part of the adjusting screw 302. Driven by the drive motor 305, the adjusting screw 302 rotates in the forward or reverse direction, and the two groups of nut seats 303 move synchronously. The two nut seats 303 in the same group move synchronously so that the two nut seats 303 approach each other or move away from each other. Correspondingly, the two groups of roller shaft seats 304 and the two groups of roller shafts 301 move synchronously, and the two roller shaft seats 304 and the roller shafts 301 in the same group move closer to each other or move away from each other.

[0043] Furthermore, in order for the shuttle to smoothly enter and exit the test area 101, the roller shaft 301 of the wheel train test assembly needs to move between a working position located above the track 200 and a avoidance position located outside the track 200. In order to achieve the switching of the roller shaft 301 between the working position and the avoidance position, the shuttle test device also includes a linear drive mechanism, which is used to drive the wheel train test assembly to move along a first direction toward or away from the track 200.

[0044] Specifically, if Figure 3As shown, the shuttle test device also includes a mobile frame 309, which is arranged on the outside of the track 200 along the first direction, and the test unit 300 is placed in the mobile frame 309 and is limitedly connected to the mobile frame 309 in the first direction. In this embodiment, four installation cavities are formed on the mobile frame 309, and the four roller shaft seats 304 included in the two test units 300 are respectively placed in the four installation cavities, and the four roller shafts 301 are located outside the installation cavities. It should be noted that the roller shaft seat 304 is limitedly connected to the mobile frame 309 in the first direction, and the roller shaft seat 304 can move relative to the mobile frame 309 in the second direction to ensure that the two roller shaft seats 304 in the same group can approach or move away from each other. Specifically, as Figure 4 As shown, four guide slots 3091 are provided on the top plate of the mobile frame 309 along the second direction. Each roller seat 304 is provided with a guide slider 3041, and the four guide sliders 3041 are respectively placed in the four guide slots 3091. Furthermore, to improve the limiting effect of the roller seat 304 and the mobile frame 309 in the first direction, a limiting plate is also provided on the roller seat 304. The limiting plate protrudes from the mounting cavity and abuts against the outer side of the mobile frame 309.

[0045] Continue to refer to Figure 3 Therefore, the linear drive mechanism includes a first electric push rod 310. The housing of the first electric push rod 310 is fixedly connected to the mobile frame 309, specifically to the bottom plate of the mobile frame 309. The telescopic rod of the first electric push rod 310 is connected to the outer surface of the track 200. When the telescopic rod of the first electric push rod 310 is extended or retracted, since the position of the track 200 remains unchanged, the mobile frame 309 can move toward or away from the track 200, thereby ultimately moving the roller shaft 301 toward or away from the wheel. Of course, in other embodiments, the housing of the first electric push rod 310 can also be fixedly connected to the frame 100, and the telescopic rod of the first electric push rod 310 can be connected to the mobile frame 309.

[0046] It should be noted that in order to ensure that the two roller shafts 301 can be directly placed on both sides of the wheel when moving closer to the wheel, the stopping position of the shuttle in the test area 101 needs to be controlled, such as Figure 4 As shown, a limit switch mounting hole is provided on track 200, and a limit switch 201 is installed in the limit switch mounting hole. When a wheel contacts the limit switch 201, the shuttle vehicle moves into position. Optionally, the number of limit switches 201 can be one or more. If multiple limit switches 201 are provided, they can be placed at different locations on track 200 to simultaneously detect different wheels. In this embodiment, four limit switches 201 are provided, arranged in two rows and two columns on two tracks 200.

[0047] Furthermore, in order to improve the movement accuracy of the moving frame 309 and the testing unit 300 along the first direction, as shown in FIG. Figure 6 As shown, a first slider 3092 is provided at the bottom of the mobile frame 309, and a first slide rail (not shown) is provided on the frame body 100 at a position corresponding to the mobile frame 309. The first slide rail is arranged along a first direction, and the first slider 3092 is slidably connected to the first slide rail. Optionally, multiple sets of first sliders 3092 and first slide rails can be provided as needed to improve movement stability.

[0048] Furthermore, in order to improve the accuracy of the same group of roller shafts 301 approaching or moving away from each other in the second direction, as shown in FIG. Figure 3 and Figure 5 As shown, a second slide rail 314 is provided on the outer surface of the track 200, and the second slide rail 314 is arranged along the second direction. A second slider 3042 is provided on the roller shaft seat 304, and the second slider 3042 is slidably connected to the second slide rail 314. Since the two groups of test units 300 located on the outer side of the track 200 include four roller shaft seats 304, each roller shaft seat 304 is provided with a second slider 3042, and the four second sliders 3042 are simultaneously slidably connected to one second slide rail 314 to improve the compactness of the structure.

[0049] In order to avoid interference between the movement of the roller shaft seat 304 in the first direction and the second direction, continue to refer to Figure 5 As shown, a movable slide groove (not marked in the figure) is provided at the bottom of the roller shaft seat 304, and a third slide rail 313 is provided in the movable slide groove. The third slide rail 313 is arranged along the first direction, and one end of the third slide rail 313 is connected to the nut seat 303, and the other end is connected to the second slide rail 314.

[0050] In order to make the load pressure of the load member 401 acting on the shuttle vehicle adjustable, such as Figure 7 As shown, the load assembly 400 also includes a second electric push rod 402 and a gravity controller 403. The telescopic rod of the second electric push rod 402 is arranged vertically, and the gravity controller 403 is arranged between the telescopic rod of the second electric push rod 402 and the load member 401. The second electric push rod 402 applies a specified pressure to the load member 401 during operation, and the gravity controller 403 can control the second electric push rod 402 to operate to the required pressure. This pressure is adjusted according to the set weight of the load member 401 pulled during the shuttle test. The shuttle's double-range mechanism can push and pull the load member 401, which mainly tests the performance fatigue detection and assembly quality of the shuttle's double-range telescopic function. By adjusting the different pressure weights of the load member 401, the load capacity and performance of the shuttle's double-range mechanism, such as the double-range motor, synchronous belt, and slide rail, can be tested during operation.

[0051] Further, continue to refer to Figure 7 As shown, the load assembly 400 further includes a load rail, a load slider 405, and a connecting plate 404. The load rail is disposed on the frame 100 along a first direction, the connecting plate 404 is disposed below the load rail, the load slider 405 is disposed on the connecting plate 404, and the load slider 405 is slidably connected to the load rail, the housing of the second electric push rod 402 is fixedly connected to the connecting plate 404, and the telescopic rod of the second electric push rod 402 is disposed through the connecting plate 404.

[0052] Continue to refer to Figure 3 As shown, the testing mechanism also includes a signal encoder 311 arranged on one of the roller shafts 301 of the testing unit 300 and a torque controller 312 arranged on another roller shaft 301 of the testing unit 300. The signal encoder 311 and the torque controller 312 are used to detect data when the shuttle driving wheel system rotates.

[0053] Specifically, when the shuttle wheel train is running, it can drive the roller shaft 301 to rotate and feedback data. The wheel train rotation data mainly includes: 1. Using the signal encoder 311 to test the accuracy of the wheel train rotation distance. Since each wheel of the shuttle has errors and the outer diameter is not absolutely the same, if the number of rotations is large, the cumulative error will be very large. By comparing the data fed back by the signal encoder 311 with the data of the shuttle's own wheel train, corresponding corrections can be made. 2. The torque controller 312 feedbacks the actual torque when the shuttle transports loads 401 of different masses. By setting the wheel train rotation time, the performance fatigue and assembly quality of the wheel train and its related components can be tested.

[0054] The working process of the shuttle test device is as follows:

[0055] First, the shuttle enters the test area 101 of the frame 100, and the wheel system of the shuttle moves on the track 200. After the limit switch 201 detects the wheel, the shuttle stops moving; then, the first electric push rod 310 is used to push the moving frame 309 and the roller shaft seat 304 and roller shaft 301 set on the moving frame 309 in the first direction close to the track 200, so that the roller shaft 301 moves the set distance to reach the target position, and the two roller shafts 301 of the same group are located on both sides of the corresponding wheel; then, the driving motor 305 drives the adjusting screw 302 to rotate forward, and the two nut seats 304 of the same group on the adjusting screw 302 are adjusted to rotate forward. 03 approach each other, thereby driving the two roller shaft seats 304 of the same group to approach each other, and then the two roller shafts 301 of the same group approach each other in the second direction until the wheels are lifted to a position away from the track 200; then, the shuttle car pulls the cargo boxes with different load pressures for fatigue testing, and the detection mechanism simultaneously detects the performance parameters of the shuttle car; finally, after the test is completed, the drive motor 305 drives the adjusting screw 302 to rotate in the opposite direction, and the roller shafts 301 of the same group move away from each other to lower the wheels, and the first electric push rod 310 moves in the opposite direction to make the roller shaft 301 away from the track 200, so as to avoid the shuttle car moving out of the shuttle car testing device.

[0056] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A shuttle vehicle testing device, characterized in that: include: A frame (100), wherein the frame (100) is provided with a test area (101) and a load area (102) arranged side by side in a first direction; A track assembly is provided in the test area (101), the track assembly comprising two tracks (200) spaced apart along the first direction, the tracks (200) being provided along a second direction perpendicular to the first direction, a shuttle vehicle entering and exiting the test area (101) via the track assembly, the wheels of the shuttle vehicle being placed on the tracks (200); A wheel train test assembly comprises a plurality of test units (300), wherein the plurality of test units (300) are arranged in a one-to-one correspondence with the plurality of wheels, wherein the test units (300) are movably arranged outside the track (200) along the first direction, wherein the test units (300) comprise a test mechanism and two roller shafts (301) spaced apart along the second direction, wherein the two roller shafts (301) are configured to be able to move closer to each other to lift the wheels off the track (200) and move away from each other to release the wheels onto the track (200), and wherein the test mechanism is used to test performance parameters of the shuttle vehicle when it is running after leaving the track (200); A load assembly (400) is arranged in the load area (102), and the load assembly (400) includes a load member (401). The shuttle can push and pull the load member (401) through a fork.

2. The shuttle vehicle testing device according to claim 1, characterized in that: The test unit (300) further comprises a rotation drive mechanism, an adjusting screw (302), two nut seats (303) and two roller shaft seats (304); the adjusting screw (302) is arranged along the second direction; a first thread structure (3021) and a second thread structure (3022) of opposite rotation directions are provided on the adjusting screw (302); the rotation drive mechanism can drive the adjusting screw (302) to rotate; the two nut seats (303) are respectively threadedly connected to the first thread structure (3021) and the second thread structure (3022) and respectively form a screw-nut pair; the two roller shaft seats (304) are fixedly connected to the two nut seats (303) in a one-to-one correspondence; and the two roller shafts (301) are rotationally connected to the two roller shaft seats (304) in a one-to-one correspondence.

3. The shuttle vehicle testing device according to claim 2, characterized in that: The rotary drive mechanism comprises a driving motor (305), a driving wheel (306), a driven wheel (308) and a transmission belt (307); the motor shaft of the driving motor (305) is in transmission connection with the driving wheel (306); the driven wheel (308) is sleeved on the adjusting screw rod (302); and the transmission belt (307) is sleeved on the driving wheel (306) and the driven wheel (308).

4. The shuttle vehicle testing device according to claim 2, characterized in that: The shuttle vehicle testing device further comprises a linear drive mechanism, which is used to drive the wheel train testing assembly to move along the first direction toward or away from the track (200).

5. The shuttle vehicle testing device according to claim 4, characterized in that: The shuttle vehicle testing device further comprises a movable frame (309), the movable frame (309) being arranged outside the track (200) along the first direction, the testing unit (300) being placed in the movable frame (309) and being position-limitedly connected to the movable frame (309) in the first direction; The linear drive mechanism comprises a first electric push rod (310), a housing of the first electric push rod (310) is fixedly connected to the moving frame (309), and a telescopic rod of the first electric push rod (310) is connected to the outer surface of the track (200).

6. The shuttle vehicle testing device according to claim 5, characterized in that: A guide slot (3091) is provided on the movable frame (309) along the second direction, a guide slider (3041) is provided on the roller shaft seat (304), and the guide slider (3041) is placed in the guide slot (3091).

7. The shuttle vehicle testing device according to claim 1, characterized in that: The load assembly (400) further includes a second electric push rod (402) and a gravity controller (403), wherein the telescopic rod of the second electric push rod (402) is vertically arranged, and the gravity controller (403) is arranged between the telescopic rod of the second electric push rod (402) and the load member (401), and the load pressure exerted by the load member (401) on the shuttle is configured to be adjustable.

8. The shuttle vehicle testing device according to claim 7, characterized in that: The load assembly (400) further comprises a load guide rail, a load slider (405) and a connecting plate (404); the load guide rail is arranged on the frame (100) along the first direction; the connecting plate (404) is arranged below the load guide rail; the load slider (405) is arranged on the connecting plate (404); and the load slider (405) is slidably connected to the load guide rail; the housing of the second electric push rod (402) is fixedly connected to the connecting plate (404); and the telescopic rod of the second electric push rod (402) is arranged through the connecting plate (404).

9. The shuttle vehicle testing device according to claim 1, characterized in that: The testing mechanism further comprises a signal encoder (311) provided on one of the roller shafts (301) of the testing unit (300); and / or The testing mechanism further comprises a torque controller (312) arranged on the other roller shaft (301) of the testing unit (300).

10. The shuttle vehicle testing device according to any one of claims 1 to 9, characterized in that: There are two loading areas (102), which are located on both sides of the test area (101). One loading assembly (400) is provided in each loading area (102).

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