Material preparation device for loader test platform

Abstract

The present invention aims to provide a material preparation device for a loader test platform, including a support frame, a guide slot, a moving beam, an X-direction moving device, a Z-direction moving device, a rotating device, and a preparation mechanism; the support frame and the guide slot are each provided with two; the moving beam is arranged along the X direction; the X-direction moving device is installed on the guide rail of the moving beam; the Z-direction moving device is installed on the X-direction moving device; the rotating device is arranged at the lower part of the Z-direction moving device; the preparation mechanism includes a mounting frame, a preparation plate, and a preparation rod, the upper end of the mounting frame is installed at the bottom end of the rotating device; the preparation plate is arranged at the bottom end of the mounting frame; a connecting rod I is arranged in the mounting frame, and two preparation rods are arranged, which are respectively installed on the connecting rod I; an X-direction telescopic device is arranged between the two preparation rods; the preparation plate and the preparation rod extending below the preparation plate jointly constitute the upper base and waists on both sides of an isosceles trapezoid. The preparation device overcomes the defects of the prior art and has the characteristics of reasonable structure, convenient operation, and strong applicability.

Description

Technical Field

[0001] The invention relates to the field of material preparation devices, and in particular to a material preparation device for a loader test platform. Background Art

[0002] At present, material preparation devices are mainly used in the process of cargo transfer or in the leveling of materials in train carriages. Their function is to level the top surface of materials stacked in the carriage to prevent them from scattering during transportation. The working device of the equipment generally realizes two degrees of freedom, including the Z-axis degree of freedom for realizing the lifting of the device, and the other Y-axis degree of freedom movement is realized by the slow driving of the vehicle, so as to finally realize the leveling of the stacked materials. The function is relatively simple and the application field is relatively narrow. In the test of the operating resistance of the loader shoveling materials, in order to conduct multiple repeated tests and ensure the accuracy of the test data, it is necessary to restore the material to the frustum shape before shoveling after one shoveling test, and it is necessary to ensure that the repose angle and the frustum height of the material before each shoveling are the same. The existing material preparation equipment is difficult to meet the requirements of the shoveling test. Summary of the invention

[0003] The present invention aims to provide a material preparation device for a loader test platform, which overcomes the defects of the prior art and has the characteristics of reasonable structure, convenient operation and strong applicability.

[0004] The technical solution of the present invention is as follows:

[0005] A material preparation device for a loader test platform, comprising a support frame, a guide groove, a movable crossbeam, an X-axis movable device

[0006] Positioning, Z-axis moving device, rotating device, and preparation mechanism;

[0007] The support frame is a square frame, and two of them are provided, which are respectively located on both sides of the loader test bench in the X direction, and the two support frames extend in the Y direction respectively; the guide grooves are provided with two, which are respectively provided on the top of the support frames on both sides of the loader test bench, and the two guide grooves are both provided in the Y direction of the loader test bench; the movable crossbeam is provided in the X direction, and its two ends are respectively installed on the two guide grooves, and can move in the Y direction along the guide groove;

[0008] The movable crossbeam is provided with a guide rail parallel to the movable crossbeam, and the X-direction moving device is installed on the guide rail and can move in the X direction along the guide rail;

[0009] The Z-direction moving device is installed on the X-direction moving device; the rotating device is arranged at the lower part of the Z-direction moving device and can move in the Z direction driven by the Z-direction moving device;

[0010] The preparation mechanism comprises a mounting frame, a preparation plate, and a preparation rod. The upper end of the mounting frame is mounted on the bottom end of the rotating device; the preparation plate is arranged at the bottom end of the mounting frame and is arranged in a horizontal direction; a long groove is arranged on the preparation plate along the X direction, and the width of the long groove is consistent with the diameter of the preparation rod; the center point of the long groove coincides with the orthographic projection point of the rotation center point of the rotating device on the preparation plate;

[0011] The mounting frame is provided with a connecting rod I arranged along the Y direction, and two preparation rods are provided. The upper ends of the two preparation rods are respectively installed on the connecting rod I, and the two preparation rods are in contact with the mounting point. The preparation rod can swing relative to the connecting rod I, and the positive projection point of the mounting point on the preparation plate coincides with the center point of the long groove; the lower ends of the two preparation rods respectively pass through the preparation plate downward from the long groove and extend obliquely to both sides; a

[0012] An X-direction telescopic device is provided, which can open or close the two preparation rods; the X-direction telescopic device is located above the preparation plate; the preparation plate and the preparation rods extending below the preparation plate together constitute the upper base and waists on both sides of the isosceles trapezoid.

[0013] Preferably, the mounting frame includes a connecting plate I and a support plate; the connecting plate I is fixedly arranged at the bottom of the rotating device and can rotate under the drive of the rotating device; the support plate includes three plates, which are respectively arranged vertically downward on the edges of both sides of the bottom of the connecting plate I in the X direction and one side in the Y direction.

[0014] Preferably, the X-direction telescopic device comprises a connecting rod II, a connecting piece, a connecting plate I, and a connecting plate II; the connecting piece is arranged along the Y direction, one end of which is fixedly connected to a support plate on the mounting frame located in the Y direction, and the other end extends to directly below the mounting points of the two preparation rods, and a threaded hole is provided on the connecting piece corresponding to directly below the mounting points of the two preparation rods; the connecting rod II is arranged along the Z direction, and a thread is provided on its upper part, which is screwed into the threaded hole of the connecting piece through threaded cooperation, and the upper end of the connecting rod II is limited by a nut; the connecting plate I is provided with two pieces, and the upper ends of the two connecting pieces I are respectively movably hinged to the lower end of the connecting rod II, and the lower ends of the two connecting pieces I extend to both sides respectively; the connecting plate II is provided with two pieces along the X direction, one end of the two connecting pieces II is respectively fixedly connected to the middle of the preparation rods on both sides, and the other ends of the two connecting pieces II are respectively movably hinged to the lower end of the connecting piece I.

[0015] Preferably, it also includes an auxiliary plate, the shape of which is consistent with that of the preparation plate, the auxiliary plate is arranged between the X-axis telescopic device and the preparation plate, the auxiliary plate is arranged horizontally, and its three sides are respectively fixedly connected to the support plates on the three sides, and the auxiliary plate is provided with a long groove corresponding to the preparation plate; the lower parts of the two preparation rods pass through the auxiliary plate and the long groove of the preparation plate in turn and extend obliquely downward along both sides of the X-axis; the width of the long groove of the auxiliary plate is consistent with the diameter of the preparation rod.

[0016] Preferably, the upper part of the preparation rod is provided with a short groove along its length direction, and the lower end of the connecting rod I is provided with a threaded hole. The connection between the preparation rod and the connecting rod I is achieved by passing a bolt through the threaded hole of the connecting rod I and the short groove of the preparation rod and then tightening the limit with a nut.

[0017] Preferably, it also includes a connecting plate II and a connecting block. The top of the connecting plate II is connected to the rotating device. The connecting blocks are arranged on both sides of the bottom of the connecting plate II in the X direction. The connecting plate II is connected to the top of the mounting frame through the connecting blocks. The upper part of the connecting rod I passes through the top of the mounting frame and extends upward. The upper part of the connecting rod I is provided with a thread. The connecting rod I is connected to the mounting frame by screwing a nut into its upper thread. The connecting part of the connecting rod I and the mounting frame can be adjusted by rotating the nut, thereby changing the height of the connecting rod I and the mounting point of the maintenance rod.

[0018] Preferably, the movable crossbeam comprises a crossbeam, roller I, motor I, gear and rack; the crossbeam is arranged along the X direction, and both ends of the crossbeam are installed in the guide groove through roller I, and the crossbeam can move in the Y direction along the guide groove through roller I; the motor I is arranged on either end of the crossbeam, and a gear is fixed on the output shaft of the motor I, and the rack is arranged on the support frame and meshes with the gear; the crossbeam moves along the guide groove direction under the drive of motor I; the X-direction moving device is installed on the crossbeam.

[0019] Preferably, the X-direction moving device comprises a bracket I, a roller II, a motor II, a sprocket, a chain, and a rotating shaft; the bracket I is arranged in a horizontal direction, and the two ends of the bracket I are arranged on the guide rail through the roller II, and the bracket I can move in the X direction through the roller II; the sprocket is provided with two groups, which are respectively arranged at the two ends of the beam, and the chain is wrapped around the two groups of sprockets to form a transmission mechanism; the motor II is arranged on either end of the beam, and the output shaft of the motor II is connected to the sprocket at the end through the rotating shaft, driving the rotation of the sprocket and the chain, thereby driving the bracket I to move in the X direction; the Z-direction moving device is installed on the bracket I.

[0020] Preferably, the Z-direction moving device includes a motor III, a direction-changing reducer, a screw, a worm gear mechanism, and a synchronous shaft; the motor III is installed on the top of the bracket I, and two direction-changing reducers are provided, which are respectively arranged on both sides of the X-direction of the top of the bracket I, and the synchronous shaft is horizontally arranged between the two direction-changing reducers, and two screws are provided, which are correspondingly arranged at the bottom; the output shaft of the motor III extends downward and is connected to the synchronous shaft through the worm gear mechanism, which can drive the synchronous shaft to rotate, and the two ends of the synchronous shaft are respectively connected to the direction-changing reducers on both sides, which can drive the output shaft of the direction-changing reducer in the vertical direction to rotate, the upper end of the screw is connected to the output shaft of the direction-changing reducer, and the lower end of the screw extends vertically downward through the bracket I, and is connected to the upper surface of the bottom of the bracket I through a bearing, and the screw can rotate under the drive of the direction-changing reducer; a threaded hole is provided on the rotating device, and is assembled on the screw through the threaded hole.

[0021] Preferably, the rotating device includes a bracket II and a motor IV. Vertical threaded holes are provided on both sides of the bracket II in the X direction. The bracket II is connected to the screw rod through the threaded holes and can move in the Z direction driven by the screw rod. The motor IV is arranged in the middle of the bracket II, and the output shaft of the motor IV extends downward, and the lower end passes through the bottom of the bracket II and the bracket I and is connected to the preparation mechanism.

[0022] The working process of the present invention is as follows:

[0023] After the loader completes a shoveling test, the moving beam is driven to move above the material through the X-direction moving device; the rotating device and the preparation mechanism are driven to descend to the height corresponding to the top of the material through the Z-direction moving device; the connecting rod I of the preparation mechanism is adjusted to adjust the angle of the preparation rod, that is, to adjust the inclination angle of the waists on both sides of the frustum after the material is prepared; the X-direction telescopic device of the preparation mechanism is adjusted to adjust the length of the upper bottom side of the trapezoid corresponding to the preparation plate, that is, to adjust the top surface diameter of the frustum after the material is prepared; the rotating device is turned on to drive the preparation mechanism to rotate, and the material is prepared by the preparation plate and the preparation rod to obtain a frustum-shaped material; after the preparation is completed, the Z-direction moving device drives the rotating device and the preparation mechanism to rise and reset, and the X-direction moving device cooperates with the moving beam to drive the support frame to leave the material area for the next loader shoveling test.

[0024] The present invention realizes the three-directional movement of the preparation mechanism by combining the moving crossbeam, the X-direction moving device and the Z-direction moving device, and is convenient to operate and has high preparation efficiency; the preparation mechanism adopts the structure of an adjustable preparation plate and a preparation rod to form the outline of the trapezoidal longitudinal section corresponding to the material frustum, realizes the preparation of the material frustum, and realizes the angle adjustment of the preparation rod through the hinge mechanism of the connecting rod I, and realizes the adjustment of the top diameter of the frustum through the X-direction telescopic device, which can be applicable to the requirements for the size of the material frustum under different experimental conditions, and enhances the applicability of the preparation device;

[0025] At the same time, the preparation rod extends downward obliquely through the long groove of the preparation plate, and the preparation plate clamps and supports the preparation rod on both sides in the horizontal direction to ensure stability during the preparation process; the additional auxiliary plate enhances the supporting effect on the preparation rod and further improves the stability; the upper short groove of the preparation rod improves the connection flexibility between the preparation rod and the connecting rod I, which is convenient for operation and adjustment; the moving beam adopts the gear and rack meshing mode for transmission, which improves the stability of the device operation; the X-axis moving device adopts the sprocket and chain meshing transmission mode, which better adapts to the repeatability of the X-axis movement and improves the operation efficiency; the Z-axis moving device adopts the screw rod and thread combination transmission, which improves the accuracy and stability of the Z-axis movement, and adopts a reversing reducer for transmission, which is convenient for the operator to fine-tune the Z-axis height; the connection between the rotating device and the preparation mechanism is realized through the connecting plate II and the connecting block, which is convenient for adjusting the connecting rod I and improves the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A front view of the structure of the material preparation device facing the loader test platform provided by the present invention;

[0027] Figure 2 A top view of the material preparation device structure facing the loader test platform provided by the present invention;

[0028] Figure 3 An enlarged view of the preparation mechanism of the material preparation device for the loader test platform provided by the present invention;

[0029] The names and serial numbers of the parts in the figure are as follows:

[0030] 1 is a support frame, 2 is a guide slot, 3 is a moving beam, 4 is an X-axis moving device, 5 is a Z-axis moving device, 6 is a rotating device, 7 is a tidying mechanism, 8 is a guide rail, 9 is an auxiliary plate, 10 is a connecting plate II, and 11 is a connecting block;

[0031] 31 is a crossbeam, 32 is a roller I, 33 is a motor I, 34 is a gear, and 35 is a rack;

[0032] 41 is a bracket I, 42 is a roller II, 43 is a motor II, 44 is a sprocket, 45 is a chain, and 46 is a rotating shaft;

[0033] 51 is motor III, 52 is a direction-changing reducer, 53 is a screw rod; 61 is bracket II, and 62 is motor IV;

[0034] 71 is a mounting frame, 72 is a preparation plate, 73 is a preparation rod, 74 is a connecting rod I, and 75 is an X-direction telescopic device;

[0035] 711 is a connecting plate I, 712 is a supporting plate, 731 is a short slot; 751 is a connecting rod II, 752 is a connecting piece, 753 is a connecting piece I, and 754 is a connecting piece II. DETAILED DESCRIPTION

[0036] The present invention is described in detail below with reference to the accompanying drawings and embodiments. Example 1

[0037] like Figure 1-3 As shown, the material preparation device for the loader test platform provided in this embodiment includes a support frame 1, a guide groove 2, a movable beam 3, an X-direction moving device 4, a Z-direction moving device 5, a rotating device 6, and a preparation mechanism 7;

[0038] The support frame 1 is a square frame, and two support frames 1 are provided, which are respectively located on both sides of the loader test bench in the X direction, and the two support frames 1 extend in the Y direction respectively; the guide grooves 2 are provided with two guide grooves 2, which are respectively arranged on the top of the support frame 1 on both sides of the loader test bench, and the two guide grooves 2 are arranged in the Y direction of the loader test bench; the movable crossbeam 3 is arranged in the X direction, and its two ends are respectively installed on the two guide grooves 2, and can move in the Y direction along the guide grooves 2;

[0039] The movable crossbeam 3 is provided with a guide rail 8 parallel thereto, the X-direction moving device 4 is mounted on the guide rail 8 and can move in the X direction along the guide rail 8; the Z-direction moving device 5 is mounted on the X-direction moving device 4; the rotating device 6 is arranged at the lower part of the Z-direction moving device 5 and can move in the Z direction driven by the Z-direction moving device 5;

[0040] The preparation mechanism 7 includes a mounting frame 71, a preparation plate 72, and a preparation rod 73. The upper end of the mounting frame 71 is mounted on the bottom end of the rotating device 6; the preparation plate 72 is arranged at the bottom end of the mounting frame 71 and is arranged in a horizontal direction; a long groove is arranged on the preparation plate 72 along the X direction, and the width of the long groove is consistent with the diameter of the preparation rod 73; the center point of the long groove coincides with the orthographic projection point of the rotation center point of the rotating device 6 on the preparation plate 72;

[0041] The mounting frame 71 is provided with a connecting rod Ⅰ 74 arranged along the Y direction, and two preparation rods 73 are provided, and the upper ends of the two preparation rods 73 are respectively installed on the connecting rod Ⅰ 74, and the two preparation rods 73 are in contact with the mounting point, and the preparation rod 73 can swing relative to the connecting rod Ⅰ 74, and the orthographic projection point of the mounting point on the preparation plate 72 coincides with the center point of the long groove;

[0042] The lower ends of the two preparation rods 73 respectively pass through the preparation plate 72 downward from the long slot and extend obliquely to both sides; an X-direction telescopic device 75 is provided between the two preparation rods 73, which can open or close the two preparation rods 73; the X-direction telescopic device 75 is located above the preparation plate 72; the preparation plate 72 and the preparation rods 73 extending below the preparation plate 72 together constitute the upper base and waists on both sides of the isosceles trapezoid;

[0043] The mounting frame 71 includes a connecting plate I 711 and a supporting plate 712; the connecting plate I 711 is fixedly arranged at the bottom of the rotating device 6 and can rotate under the drive of the rotating device 6; the supporting plate 712 includes three pieces, which are respectively arranged vertically downward on both sides of the bottom of the connecting plate I 711 in the X direction and on the edge of one side in the Y direction;

[0044] The X-direction telescopic device 75 includes a connecting rod II 751, a connecting piece 752, a connecting piece I 753, and a connecting piece II 754; the connecting piece 752 is arranged along the Y direction, one end of which is fixedly connected to the support plate 712 on the mounting frame 71 in the Y direction, and the other end extends to the bottom of the mounting points of the two preparation rods 73, and a threaded hole is provided on the connecting piece 752 corresponding to the mounting points of the two preparation rods 73; the connecting rod II 751 is arranged along the Z direction, and a thread is provided on the upper part thereof, and is screwed into the connection through the threaded fit The upper end of the connecting rod II 751 is limited by a nut in the threaded hole of the component 752; the connecting piece I 753 is provided with two pieces, the upper ends of the two connecting pieces I 753 are respectively movably hinged to the lower end of the connecting rod II 751, and the lower ends of the two connecting pieces I 753 extend to both sides respectively; the connecting piece II 754 is provided with two pieces along the X direction, one end of the two connecting pieces II 754 is respectively fixedly connected to the middle part of the preparation rod 73 on both sides, and the other ends of the two connecting pieces II 754 are respectively movably hinged to the lower end of the connecting piece I 753;

[0045] It also includes an auxiliary plate 9, the shape of which is consistent with that of the preparation plate 72, and the auxiliary plate 9 is arranged between the X-direction telescopic device 75 and the preparation plate 72. The auxiliary plate 9 is arranged horizontally, and its three sides are respectively fixedly connected to the support plates 712 on the three sides, and the auxiliary plate 9 is provided with a long groove corresponding to the preparation plate 72; the lower parts of the two preparation rods 73 sequentially pass through the long grooves of the auxiliary plate 9 and the preparation plate 72 and extend obliquely downward along both sides of the X direction; the width of the long groove of the auxiliary plate 9 is consistent with the diameter of the preparation rod 73;

[0046] The upper part of the tidying rod 73 is provided with a short slot 731 along the length direction thereof, and the lower end of the connecting rod I 74 is provided with a threaded hole. The connection between the tidying rod 73 and the connecting rod I 74 is realized by passing a bolt through the threaded hole of the connecting rod I 74 and the short slot 731 of the tidying rod 73 and then tightening the nut with a limit.

[0047] It also includes a connecting plate II 10 and a connecting block 11. The top of the connecting plate II 10 is connected to the rotating device 6. The connecting blocks 11 are arranged on both sides of the bottom of the connecting plate II 10 in the X direction. The connecting plate II 10 is connected to the top of the mounting frame 71 through the connecting blocks 11. The upper part of the connecting rod I 74 passes through the top of the mounting frame 71 and extends upward. The upper part of the connecting rod I 74 is provided with threads. The connecting rod I 74 is connected to the mounting frame 71 by screwing a nut into the upper thread. The connecting rod I 74 can be adjusted by rotating the nut to adjust the connection position between the connecting rod I 74 and the mounting frame 71, thereby changing the height of the mounting point of the connecting rod I 74 and the preparation rod 73.

[0048] The movable crossbeam 3 comprises a crossbeam 31, a roller Ⅰ32, a motor Ⅰ33, a gear 34, and a rack 35; the crossbeam 31 is arranged along the X direction, and both ends of the crossbeam 31 are installed in the guide groove 2 through the roller Ⅰ32, and the crossbeam 31 can move along the guide groove 2 in the Y direction through the roller Ⅰ32; the motor Ⅰ33 is arranged on either end of the crossbeam 31, and a gear 34 is fixed on the output shaft of the motor Ⅰ33, and the rack 35 is arranged on the support frame 1 and meshes with the gear 34; the crossbeam 31 moves in the direction of the guide groove 2 under the drive of the motor Ⅰ33; the X-direction moving device 4 is installed on the crossbeam 31;

[0049] The X-direction moving device 4 includes a bracket Ⅰ41, a roller Ⅱ42, a motor Ⅱ43, a sprocket 44, a chain 45, and a rotating shaft 46; the bracket Ⅰ41 is arranged in a horizontal direction, and both ends of the bracket Ⅰ41 are arranged on the guide rail 8 through the roller Ⅱ42, and the bracket Ⅰ41 can move in the X direction through the roller Ⅱ42; the sprocket 44 is provided with two groups, which are respectively arranged at both ends of the beam 31, and the chain 45 is surrounded between the two groups of sprockets 44 to form a transmission mechanism; the motor Ⅱ43 is arranged on either end of the beam 31, and the output shaft of the motor Ⅱ43 is connected to the sprocket 44 at the end through the rotating shaft 46, driving the rotation of the sprocket 44 and the chain 45, thereby driving the bracket Ⅰ41 to move in the X direction; the Z-direction moving device 5 is installed on the bracket Ⅰ41;

[0050] The Z-direction moving device 5 includes a motor III 51, a direction-changing reducer 52, a screw 53, a worm gear mechanism 54, and a synchronous shaft 55; the motor III 51 is installed on the top of the bracket I 41, and the direction-changing reducer 52 is provided with two, which are respectively provided on both sides of the top of the bracket I 41 in the X direction, and the synchronous shaft 55 is provided horizontally between the two direction-changing reducers 52, and the screw 53 is provided with two, which are correspondingly provided at the bottom; the output shaft of the motor III 51 extends downward through the worm gear mechanism 54 and is connected to the synchronous shaft 55, which can The synchronous shaft 55 is driven to rotate. The two ends of the synchronous shaft 55 are respectively connected to the direction-changing reducers 52 on both sides, and can drive the output shaft of the direction-changing reducer 52 in the vertical direction to rotate. The upper end of the screw rod 53 is connected to the output shaft of the direction-changing reducer 52. The lower end of the screw rod 53 extends vertically downward through the bracket Ⅰ41 and is connected to the upper surface of the bottom of the bracket Ⅰ41 through a bearing. The screw rod 53 can rotate under the drive of the direction-changing reducer 52; the rotating device 6 is provided with a threaded hole, and is assembled on the screw rod 53 through the threaded hole;

[0051] The rotating device 6 includes a bracket II 61 and a motor IV 62. Vertical threaded holes are provided on both sides of the bracket II 61 in the X direction. The bracket II 61 is connected to the screw rod 53 through the threaded holes and can move in the Z direction driven by the screw rod 53. The motor IV 62 is arranged in the middle of the bracket II 61. The output shaft of the motor IV 62 extends downward, and the lower end passes through the bottom of the bracket II 61 and the bracket I 41 and is connected to the preparation mechanism 7.

[0052] The X-direction pointer in this embodiment Figure 1 The Y direction refers to the left and right direction. Figure 1 The front-to-back direction in the Z direction Figure 1 The vertical direction in .

[0053] The working process of this embodiment is as follows:

[0054] After the loader completes a shoveling test, the moving beam is driven to move above the material through the X-direction moving device; the rotating device and the preparation mechanism are driven to descend to the height corresponding to the top of the material through the Z-direction moving device; the connecting rod I of the preparation mechanism is adjusted to adjust the angle of the preparation rod, that is, to adjust the inclination angle of the waists on both sides of the frustum after the material is prepared; the X-direction telescopic device of the preparation mechanism is adjusted to adjust the length of the upper bottom side of the trapezoid corresponding to the preparation plate, that is, to adjust the top surface diameter of the frustum after the material is prepared; the rotating device is turned on to drive the preparation mechanism to rotate, and the material is prepared by the preparation plate and the preparation rod to obtain a frustum-shaped material; after the preparation is completed, the Z-direction moving device drives the rotating device and the preparation mechanism to rise and reset, and the X-direction moving device cooperates with the moving beam to drive the support frame to leave the material area for the next loader shoveling test.

Claims

1. A material preparation device for a loader test platform, comprising a support frame (1), a guide groove (2), a movable beam (3), an X-direction moving device (4), a Z-direction moving device (5), a rotating device (6), and a preparation mechanism (7), characterized in that: The support frame (1) is a square frame, and two of them are provided, and are located on both sides of the loader test bench in the X direction, and the two support frames (1) extend in the Y direction respectively; the guide grooves (2) are provided with two, and are respectively arranged on the top of the support frames (1) on both sides of the loader test bench, and the two guide grooves (2) are arranged in the Y direction of the loader test bench; the movable crossbeam (3) is arranged in the X direction, and its two ends are respectively installed on the two guide grooves (2), and can move in the Y direction along the guide grooves (2); The movable crossbeam (3) is provided with a guide rail (8) parallel to the movable crossbeam, and the X-direction moving device (4) is installed on the guide rail (8) and can move in the X direction along the guide rail (8); The Z-direction moving device (5) is installed on the X-direction moving device (4); the rotating device (6) is arranged at the bottom of the Z-direction moving device (5) and can move in the Z direction under the drive of the Z-direction moving device (5); The preparation mechanism (7) comprises a mounting frame (71), a preparation plate (72), and a preparation rod (73); the upper end of the mounting frame (71) is mounted on the bottom end of the rotating device (6); the preparation plate (72) is arranged at the bottom end of the mounting frame (71) and is arranged in a horizontal direction; a long groove is provided on the preparation plate (72) along the X direction, and the width of the long groove is consistent with the diameter of the preparation rod (73); the center point of the long groove coincides with the orthographic projection point of the rotation center point of the rotating device (6) on the preparation plate (72); The mounting frame (71) is provided with a connecting rod I (74) arranged along the Y direction, and two preparation rods (73) are provided. The upper ends of the two preparation rods (73) are respectively installed on the connecting rod I (74), and the two preparation rods (73) are in contact with the installation point. The preparation rod (73) can swing relative to the connecting rod I (74), and the positive projection point of the installation point on the preparation plate (72) coincides with the center point of the long groove; the lower ends of the two preparation rods (73) respectively pass through the preparation plate (72) downward from the long groove and extend obliquely to both sides; an X-direction telescopic device (75) is provided between the two preparation rods (73), which can open or close the two preparation rods (73); the X-direction telescopic device (75) is located above the preparation plate (72); the preparation plate (72) and the preparation rods (73) extending below the preparation plate (72) together constitute the upper base and waists on both sides of the isosceles trapezoid; The mounting frame (71) comprises a connecting plate I (711) and a supporting plate (712); the connecting plate I (711) is fixedly arranged at the bottom of the rotating device (6) and can rotate under the drive of the rotating device (6); the supporting plate (712) comprises three pieces, which are respectively arranged vertically downward on the edges of both sides of the bottom of the connecting plate I (711) in the X direction and one side in the Y direction; The X-direction telescopic device (75) comprises a connecting rod II (751), a connecting piece (752), a connecting plate I (753), and a connecting plate II (754); the connecting piece (752) is arranged along the Y direction, one end of which is fixedly connected to a support plate (712) on the mounting frame (71) located in the Y direction, and the other end of which extends to directly below the mounting points of the two preparation rods (73); a threaded hole is provided on the connecting piece (752) corresponding to the mounting points of the two preparation rods (73); the connecting rod II (751) is arranged along the Z direction, and a thread is provided on its upper portion, which is screwed into the connecting rod II (751) through the threaded fit The upper end of the connecting rod II (751) is limited by a nut in the threaded hole of the connecting piece (752); the connecting piece I (753) is provided with two pieces, the upper ends of the two connecting pieces I (753) are respectively movably hinged to the lower end of the connecting rod II (751), and the lower ends of the two connecting pieces I (753) extend to both sides respectively; the connecting piece II (754) is provided with two pieces along the X direction, one end of the two connecting pieces II (754) is respectively fixedly connected to the middle part of the preparation rod (73) on both sides, and the other ends of the two connecting pieces II (754) are respectively movably hinged to the lower end of the connecting piece I (753); It also includes an auxiliary plate (9), the shape of the auxiliary plate (9) is consistent with that of the preparation plate (72), the auxiliary plate (9) is arranged between the X-direction telescopic device (75) and the preparation plate (72), the auxiliary plate (9) is arranged horizontally, and its three sides are respectively fixedly connected to the support plates (712) on the three sides, and the auxiliary plate (9) is provided with a long groove corresponding to the preparation plate (72); the lower parts of the two preparation rods (73) pass through the auxiliary plate (9) and the long groove of the preparation plate (72) in sequence and extend obliquely downward along both sides of the X direction; the width of the long groove of the auxiliary plate (9) is consistent with the diameter of the preparation rod (73); The upper portion of the tidying rod (73) is provided with a short slot (731) extending along its length, and the lower end of the connecting rod I (74) is provided with a threaded hole, and a bolt is passed through the threaded hole of the connecting rod I (74) and the short slot (731) of the tidying rod (73) and then tightened with a nut to limit the position, thereby achieving connection between the tidying rod (73) and the connecting rod I (74); It also includes a connecting plate II (10) and a connecting block (11), wherein the top of the connecting plate II (10) is connected to the rotating device (6), and the connecting plate II (10) is connected to the top of the mounting frame (71) through the connecting block (11), and the upper part of the connecting rod I (74) passes through the top of the mounting frame (71) and extends upward, and the upper part of the connecting rod I (74) is provided with a thread, and the connecting rod I (74) is connected to the mounting frame (71) by screwing a nut into the upper thread of the connecting rod I (74), and the connection part between the connecting rod I (74) and the mounting frame (71) can be adjusted by rotating the nut, thereby changing the height of the mounting point of the connecting rod I (74) and the maintenance rod (73); The movable crossbeam (3) comprises a crossbeam (31), a roller I (32), a motor I (33), a gear (34), and a rack (35); the crossbeam (31) is arranged along the X direction, and both ends of the crossbeam (31) are installed in the guide groove (2) through the roller I (32), and the crossbeam (31) can move along the guide groove (2) in the Y direction through the roller I (32); the motor I (33) is arranged on either end of the crossbeam (31), and a gear (34) is fixedly provided on the output shaft of the motor I (33); the rack (35) is arranged on the support frame (1) and meshes with the gear (34); the crossbeam (31) moves in the direction of the guide groove (2) under the drive of the motor I (33); the X-direction moving device (4) is installed on the crossbeam (31).

2. The material preparation device for the loader test platform according to claim 1, characterized in that: The X-direction moving device (4) comprises a bracket I (41), a roller II (42), a motor II (43), a sprocket (44), a chain (45), and a rotating shaft (46); the bracket I (41) is arranged in a horizontal direction, and both ends of the bracket I (41) are arranged on the guide rail (8) through the roller II (42), and the bracket I (41) can move in the X direction through the roller II (42); the sprocket (44) is provided with two groups, which are respectively arranged at both ends of the crossbeam (31), and the chain (45) is surrounded between the two groups of sprockets (44) to form a transmission mechanism; the motor II (43) is arranged on either end of the crossbeam (31), and the output shaft of the motor II (43) is connected to the sprocket (44) at the end through the rotating shaft (46), so as to drive the sprocket (44) and the chain (45) to rotate, thereby driving the bracket I (41) to move in the X direction; the Z-direction moving device (5) is installed on the bracket I (41).

3. The material preparation device for the loader test platform according to claim 2, characterized in that: The Z-direction moving device (5) comprises a motor III (51), a direction-changing reducer (52), a screw (53), a worm gear mechanism (54), and a synchronous shaft (55); the motor III (51) is mounted on the top of the bracket I (41); two direction-changing reducers (52) are provided, respectively disposed on both sides of the top of the bracket I (41) in the X direction; the synchronous shaft (55) is horizontally disposed between the two direction-changing reducers (52); two screws (53) are provided, correspondingly disposed at the bottom; the output shaft of the motor III (51) extends downward through the worm gear mechanism (54) and is connected to the synchronous shaft (55). , capable of driving the synchronous shaft (55) to rotate, the two ends of the synchronous shaft (55) are respectively connected to the direction-changing reducers (52) on both sides, and can drive the output shaft of the direction-changing reducer (52) to rotate in the vertical direction, the upper end of the screw rod (53) is connected to the output shaft of the direction-changing reducer (52), the lower end of the screw rod (53) passes through the bracket I (41) and extends vertically downward, and is connected to the upper surface of the bottom of the bracket I (41) through a bearing, and the screw rod (53) can rotate under the drive of the direction-changing reducer (52); the rotating device (6) is provided with a threaded hole, and is assembled on the screw rod (53) through the threaded hole.

4. The material preparation device for the loader test platform according to claim 3, characterized in that: The rotating device (6) comprises a bracket II (61) and a motor IV (62). Vertical threaded holes are provided on both sides of the bracket II (61) in the X direction. The bracket II (61) is connected to the screw rod (53) through the threaded holes and can move in the Z direction under the drive of the screw rod (53). The motor IV (62) is arranged in the middle of the bracket II (61). The output shaft of the motor IV (62) extends downward, and the lower end passes through the bottom of the bracket II (61) and the bracket I (41) to be connected to the preparation mechanism (7).

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