A platform for testing

Abstract

A test platform comprises a pair of end pieces, the upper end of the end pieces is provided with an outward extension, a middle connecting part is arranged between the end pieces, a driving part is arranged on the end pieces and connected with the middle connecting part to adjust the distance between the end pieces, and a traction part is connected to one of the end pieces to move the end piece on a track arranged below the end piece. In order to test different types of tested devices or different test scenes, the distance between the two end pieces can be adjusted as needed to expand the adaptation range.

Description

Technical Field

[0001] This utility model relates to the field of testing technology, and in particular to a testing platform. Background Technology

[0002] Some specialized equipment requires testing of its vehicle body's operational stability when moving on a track. Currently, this testing is typically conducted using a sliding test trolley mounted on the track. However, to ensure the trolley's smooth movement, simulations based on real-world scenarios are not performed. Consequently, only operational data under stable movement conditions can be obtained during testing, resulting in an incomplete understanding of the equipment's operating parameters. In real and comprehensive usage scenarios, the operating track may have local height differences, uneven terrain, or lateral curves. Furthermore, existing test trolleys lack expandability. Utility Model Content

[0003] This utility model provides a testing platform to overcome the shortcomings of the prior art and solve the problem that mobile testing cannot meet the needs of real-world scenarios, thus having strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: A testing platform includes a pair of end pieces, each end piece having an extended portion at its upper end and a central connecting portion between the end pieces. Each end piece has a drive portion connected to the central connecting portion to adjust the distance between the end pieces. One end piece is connected to a traction portion for traction to move the end piece on a track disposed below it.

[0005] Furthermore, the end piece includes a lower horizontal plate arranged horizontally, a plurality of vertical plates arranged vertically fixed on the lower horizontal plate by bolts, an upper horizontal plate fixed to the upper end of the vertical plates by bolts, a plurality of concave lower seats fixed to the lower wall of the lower horizontal plate by bolts, a plurality of sliding wheels rotatably provided on the concave lower seats via a second shaft, the sliding wheels slidingly engaging with a track, a plurality of lower support plates fixed to the lower wall of the lower horizontal plate by bolts, and at least one pair of universal wheels provided on the lower support plates.

[0006] Furthermore, the outward extension includes a first rotating seat rotatably mounted at both ends of the lower horizontal plate via a shaft. A telescopic screw is fixed on the first rotating seat. The telescopic screw is driven by a first motor fixed on the first rotating seat to extend and retract along the axial direction of the telescopic screw body. The other end of the telescopic screw is hinged to a rotating end via a shaft. An outward extension plate is connected to the outer side of the upper horizontal plate via a hinge. The rotating end is fixed to the lower side of the outward extension plate.

[0007] Furthermore, guardrails are provided on opposite sides of the end piece. Each guardrail has a pair of vertical rods with their lower ends fixed to the upper horizontal plate. The vertical rods are arranged in a cross structure and multiple pairs of connecting rods are connected at the intersection by a hinge shaft. The ends of adjacent sets of connecting rods are connected by a hinge shaft.

[0008] Furthermore, the central connecting section includes multiple rectangular plates arranged in an equally spaced array along their width. When the testing equipment is placed on it, the adjacent surfaces of two adjacent rectangular plates will abut against each other due to pressure, thus giving it good rigidity. A pair of connectors are welded to the lower side of the rectangular plates, and a link is welded to the lower end of the connector. Two adjacent link are hinged together by a first shaft. A roller is rotatably provided at the outer end of the first shaft. A guide wedge is fixed to the upper inner wall of the vertical plate by screws. The upper wall of the guide wedge is tangent to the outer circumference of the roller. The upper wall of the guide wedge is inclined, and the inner end of the inclined surface extends upward. A constraint member with a quarter-circle arc structure is also fixed to the upper inner wall of the vertical plate by bolts. The constraint member has a constraint groove with a quarter-circle arc structure, and the roller rolls in the constraint groove.

[0009] Specifically, the connector includes a concave connector end with a pair of connector protrusions formed thereon. A first shaft passes through the connector end and the connector protrusions, and the connector protrusions are inserted into the connector end on the adjacent connector.

[0010] Furthermore, the drive unit includes a commutator fixed to the lower horizontal plate by bolts. The commutators are driven by a horizontally arranged central shaft. A second motor is connected to one of the commutators. The second motor is fixed to the lower horizontal plate by a mounting bracket. The output shaft of the second motor is coaxial with the central shaft. A vertically arranged lead screw is rotatably provided on the commutator. A drive horizontal plate is threadedly connected to the lead screw. Slider blocks are fixed at both ends of the drive horizontal plate. A vertically arranged guide rail is fixed inside the vertical plate. The slider slides on the guide rail. An upper connecting protrusion is formed at the upper end of the slider. The upper connecting protrusion is connected to a connecting member located at the end by a third shaft.

[0011] Furthermore, the traction unit includes a pair of L-shaped connecting end pieces fixed to the lower horizontal plate by bolts. The lower wall of the horizontal section of the connecting end pieces is fixed with an inner nest, and a spring is provided in the inner nest. The lower end of the spring abuts against a movable column. A constraint hole is opened on the inner nest, and a limit pin passes through the constraint hole. The limit pin is fixed to the movable column. The lower end of the movable column is provided with a lower top recess. An outer horizontal plate is fixed between the lower top recesses by screws. A connecting lower shaft is rotatably provided on the lower top recess. A traction wheel is rotatably provided in the lower top recess. The two ends of the traction wheel are rotatably mounted on the lower top recess through outer spherical ball bearings. The outer diameter surface of the outer ring of the outer spherical ball bearing is spherical, which can be fitted into the corresponding concave spherical surface of the bearing seat to play an adjustment role. The bearing seat is fixed on the lower top recess. The outer spherical ball bearing is mainly used to bear the combined radial and axial loads, which are mainly radial loads. When the wheel travels along the left or right curve of the track, it experiences a lateral force to the left or right. This lateral force causes the bearing to transmit power within the spherical groove, allowing the wheel to adaptively deflect in the direction of the track's curvature, thus preventing the drive mechanism from derailing. The traction wheel is fixed to the lower connecting shaft, which has a driven gear meshing with a drive gear. A third motor is fixed to the outer cross plate, and the output shaft of the third motor is connected to the drive gear.

[0012] The advantages of the above technical solution are: This invention utilizes a spring mechanism to ensure the traction wheel remains in contact with the track when encountering uneven surfaces, thus guaranteeing the movement of the tested equipment along with the platform. Furthermore, in cases of track unevenness, the two end pieces are connected by multiple rectangular plates, preventing the sliding wheel from derailing due to varying degrees of unevenness at different track locations. The included casters also prevent tipping or overturning.

[0013] In order to test different types of devices or different test scenarios, the spacing between the two end pieces can be adjusted as needed to expand the range of adaptability.

[0014] The testing platform can extend 0.6-2.8m along the unfolding direction. The rectangular plates and other components used to place the equipment under test are made of patterned steel plates to improve the anti-slip effect. Attached Figure Description

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a more detailed description of this utility model in conjunction with the accompanying drawings.

[0016] Figure 1 A three-dimensional structure of one embodiment is shown. Figure 1 .

[0017] Figure 2 A three-dimensional structure of one embodiment is shown. Figure 2 .

[0018] Figure 3 A three-dimensional structure of one embodiment is shown. Figure 3 . Detailed Implementation

[0019] like Figures 1-3 As shown, a test platform includes a pair of end pieces 1. The upper end of the end piece 1 is provided with an outward extension 2. The end pieces 1 are provided with a middle connecting part 3. The end piece 1 is provided with a driving part, which is connected to the middle connecting part 3 to adjust the distance between the end pieces 1. One of the end pieces 1 is connected with a traction part 4, which is used to pull the end piece 1 to move on a track provided below it.

[0020] The end piece 1 includes a lower horizontal plate 10 arranged horizontally, a plurality of vertical plates 11 arranged vertically fixed on the lower horizontal plate 10 by bolts, an upper horizontal plate 12 fixed to the upper end of the vertical plate 11 by bolts, a plurality of concave lower seats 15 fixed to the lower wall of the lower horizontal plate 10 by bolts, a plurality of sliding wheels 16 rotatably provided on the concave lower seats 15 via a second shaft, the sliding wheels 16 slidingly engaged on a track, a plurality of lower support plates 13 fixed to the lower wall of the lower horizontal plate 10 by bolts, and at least one pair of universal wheels 14 provided on the lower support plates 13.

[0021] The extension section 2 includes a first rotating seat 20 rotatably mounted at both ends of the lower horizontal plate 10 via a shaft. A telescopic screw 22 is fixed on the first rotating seat 20. The telescopic screw 22 is driven by a first motor 21 fixed on the first rotating seat 20 to extend and retract along the axial direction of the telescopic screw 22. The other end of the telescopic screw 23 is hinged to a rotating end 24 via a shaft. An extension plate 25 is connected to the outer side of the upper horizontal plate 12 via a hinge. The rotating end 24 is fixed to the lower side of the extension plate 25.

[0022] Optionally, the telescopic lead screw 22 contains a pair of meshing gears, one of which is connected to the output shaft of the first motor 21, and the other gear is coaxially connected to a lead screw. The lead screw is threaded into the telescopic rod 23. The inner end of the telescopic rod 23 is provided with a sliding pair, and the body of the telescopic rod 23 is provided with a guide rail or guide groove. The sliding pair is slidably disposed in the guide rail or guide groove.

[0023] The end piece 1 has guardrails 17 on opposite sides. The guardrails 17 have a pair of vertical rods 170 whose lower ends are fixed to the upper horizontal plate 12. The vertical rods 170 are in a cross structure and multiple pairs of connecting rods 171 are connected by a hinge shaft at the intersection. The ends of adjacent sets of connecting rods 171 are connected by a hinge shaft.

[0024] The middle connecting part 3 includes multiple rectangular plates 30 that are elongated and arranged in an equally spaced array along their width direction. A pair of connectors 31 are welded to the lower side of the rectangular plates 30. A link is welded to the lower end of the connector 31. Adjacent link members are hinged together by a first shaft 34. A roller 35 is rotatably provided at the outer end of the first shaft 34. A guide wedge is fixed to the upper inner wall of the vertical plate 11 by screws. The upper wall of the guide wedge is tangent to the outer periphery of the roller 35. The upper wall of the guide wedge is an inclined surface, and the inner end of the inclined surface extends upward. A constraint member with a quarter-circle arc structure is also fixed to the upper inner wall of the vertical plate 11 by bolts. A constraint groove with a quarter-circle arc structure is provided on the constraint member. The roller 35 rolls in the constraint groove.

[0025] Specifically, the connector includes a concave connector end 32, on which a pair of connector protrusions 33 are formed. A first shaft 34 passes through the connector end 32 and the connector protrusions 33, and the connector protrusions 33 are inserted into the connector end 32 on the adjacent connector.

[0026] The drive unit includes a commutator 50 bolted to the lower horizontal plate 10. The commutators 50 are driven by a horizontally arranged central shaft 52. A second motor 54 is connected to one of the commutators 50. The second motor 54 is fixed to the lower horizontal plate 10 by a mounting base 53. The output shaft of the second motor 54 is coaxial with the central shaft 52. A vertically arranged lead screw 51 is rotatably mounted on the commutator 50. A drive horizontal plate 55 is threadedly connected to the lead screw 51. Slider blocks 56 are fixed to both ends of the drive horizontal plate 55. A vertically arranged guide rail 57 is fixed inside the vertical plate 11. The guide rail 57 has a constraint groove, and the roller 35 moves within the constraint groove. The slider 56 slides on the guide rail 57. An upper connecting protrusion 58 is formed at the upper end of the slider 56. The upper connecting protrusion 58 is connected to a connecting member located at the end via a third shaft 59.

[0027] Optionally, the commutator includes a housing, within which a worm gear is rotatably mounted. The worm gear meshes with a worm, which is connected via a central shaft 52. A lead screw 51 is connected to the worm gear.

[0028] The traction unit 4 includes a pair of L-shaped connecting end pieces fixed to the lower horizontal plate 10 by bolts. The lower wall of the horizontal section of the connecting end pieces is fixed with an inner nest, and a spring is provided in the inner nest. The lower end of the spring abuts against a movable column. A constraint hole is provided on the inner nest, and a limit pin passes through the constraint hole. The limit pin is fixed to the movable column. The lower end of the movable column is provided with a lower top recess 41. An outer horizontal plate 40 is fixed between the lower top recesses 41 by screws. A connecting lower shaft 42 is rotatably provided on the lower top recess 41. A traction wheel 43 is rotatably provided inside the lower top recess 41. The two ends of the traction wheel 43 are rotatably mounted on the lower top recess through outer spherical ball bearings. The outer diameter surface of the outer ring of the outer spherical ball bearing is spherical, which can be fitted into the corresponding concave spherical surface of the bearing seat to play an adjustment role. The bearing seat is fixed on the lower top recess. The outer spherical ball bearing is mainly used to bear the combined radial and axial loads, which are mainly radial loads. When the wheel travels on the left or right curve of the track, it will be subjected to a lateral force to the left or right. This lateral force will cause the bearing to transmit power within the spherical groove, making the wheel adaptively deflect in the direction of the track curvature, thus preventing the drive mechanism from derailing. The traction wheel 43 is fixed to the connecting lower shaft 42, which is equipped with a driven gear 44. The driven gear 44 meshes with a drive gear. A third motor 45 is fixed on the outer cross plate 40, and the output shaft of the third motor 45 is connected to the drive gear.

[0029] In this embodiment, the platform is first placed on a pre-laid track. During connection, the sliding wheel 16 and the traction wheel 43 need to be moved onto the track, while the casters on both sides contact the ground or the supporting components.

[0030] Then, the distance between the two end pieces 1 is adjusted as needed. During adjustment, either one of the second motors 54 is started simultaneously or only one of them is started. Driven by the second motor 54 and the central shaft 52, the worm gear inside the commutator rotates. The rotation of the worm gear drives the worm wheel to rotate, which in turn drives the lead screw 51 to rotate synchronously. The rotation of the lead screw 51 drives the drive plate 55 to move downward, and during this movement, it pulls part of the rectangular plate 30 downward, thereby bringing the two end pieces 1 closer together. Furthermore, to facilitate the adjustment of the distance between the end pieces 1, a vertical connecting rod is provided at the lower end of the end piece 1 as shown in the figure. The lower connecting plate hook at the lower end of the connecting rod is mounted on the track to lock one of the end pieces 1, preventing the end piece 1 from moving during expansion or contraction.

[0031] The device under test is then placed on the rectangular plate 30, and the first motor 21 is started. Driven by the first motor 21, two gears rotate, which in turn drive the lead screw connected to it to rotate. When the lead screw rotates, it drives the telescopic rod 23 to extend and retract, thereby causing the outer plate 25 to rotate upward. This protects the device under test placed on the rectangular plate 30 and prevents it from being moved off the platform during the movement. The guardrail 17 is also provided for safety during the movement test.

[0032] During the test, the third motor 45 is started to drive the lower shaft 42 to rotate. The rotation of the lower shaft 42 will drive the two traction wheels 43 to rotate. The rotation of the traction wheels 43 will make the platform move on the track. During the movement, the spring can ensure that the traction wheels 43 are always in contact with the track to avoid derailment.

[0033] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A testing platform, characterized in that, It includes a pair of end pieces (1), with an outward extension (2) at the upper end of the end piece (1), a middle connecting part (3) between the end pieces (1), and a driving part on the end piece (1). The driving part is connected to the middle connecting part (3) to adjust the distance between the end pieces (1). One of the end pieces (1) is connected to a traction part (4), which is used to traction the end piece (1) to move on the track below it.

2. The test platform according to claim 1, characterized in that, The end piece (1) includes a lower horizontal plate (10) arranged horizontally, and a plurality of vertical plates (11) arranged vertically are fixed on the lower horizontal plate (10) by bolts. An upper horizontal plate (12) is fixed to the upper end of the vertical plate (11) by bolts. A plurality of concave lower seats (15) are fixed to the lower wall of the lower horizontal plate (10) by bolts. A plurality of sliding wheels (16) are provided on the concave lower seats (15) through a second shaft. The sliding wheels (16) are slidably engaged on the track. A plurality of lower support plates (13) are fixed to the lower wall of the lower horizontal plate (10) by bolts. At least one pair of universal wheels (14) are provided on the lower support plates (13).

3. The testing platform according to claim 2, characterized in that, The extension part (2) includes a first rotating seat (20) rotatably mounted on both ends of the lower horizontal plate (10) via a shaft. A telescopic screw (22) is fixed on the first rotating seat (20). The telescopic screw (22) is driven by a first motor (21) fixed on the first rotating seat (20) to extend and retract along the axial direction of the telescopic screw (22). The other end of the telescopic screw (23) is hinged to a rotating end (24) via a shaft. An extension plate (25) is connected to the outer side of the upper horizontal plate (12) via a hinge. The rotating end (24) is fixed to the lower side of the extension plate (25).

4. The testing platform according to claim 2, characterized in that, The end piece (1) has guardrails (17) on opposite sides. The guardrails (17) have a pair of vertical rods (170) with their lower ends fixed to the upper horizontal plate (12). The vertical rods (170) are in a cross structure and multiple pairs of connecting rods (171) are connected by a hinge shaft at the cross point. The ends of adjacent sets of connecting rods (171) are connected by a hinge shaft.

5. The testing platform according to claim 2, characterized in that, The middle connecting part (3) includes multiple rectangular plates (30) that are long strips and arranged in an equally spaced array along their width direction. A pair of connectors (31) are welded to the lower side of the rectangular plates (30). A link is welded to the lower end of the connector (31). The two adjacent link are hinged together by a first shaft (34). A roller (35) is rotatably provided at the outer end of the first shaft (34). A guide wedge is fixed to the upper inner wall of the vertical plate (11) by screws. The upper wall of the guide wedge is tangent to the outer periphery of the roller (35). The upper wall of the guide wedge is an inclined surface, and the inner end of the inclined surface extends upward. A constraint member with a quarter-circle arc structure is also fixed to the upper inner wall of the vertical plate (11) by bolts. A constraint groove with a quarter-circle arc structure is provided on the constraint member. The roller (35) rolls in the constraint groove.

6. The test platform according to claim 5, characterized in that, The drive unit includes a commutator (50) fixed to the lower horizontal plate (10) by bolts. The commutators (50) are driven by a horizontally arranged central shaft (52). A second motor (54) is connected to one of the commutators (50). The second motor (54) is fixed to the lower horizontal plate (10) by a fixing seat (53). The output shaft of the second motor (54) is coaxial with the central shaft (52). A vertically arranged lead screw (51) is rotatably provided on the commutator (50). A drive horizontal plate (55) is threadedly connected to the lead screw (51). Slider blocks (56) are fixed at both ends of the drive horizontal plate (55). A vertically arranged guide rail (57) is fixed inside the vertical plate (11). The slider (56) slides on the guide rail (57). An upper connecting protrusion (58) is formed at the upper end of the slider (56). The upper connecting protrusion (58) is connected to a connecting member located at the end by a third shaft (59).

7. The testing platform according to claim 2, characterized in that, The traction unit (4) includes a pair of L-shaped connecting end pieces fixed to the lower horizontal plate (10) by bolts. The lower wall of the horizontal section of the connecting end pieces is fixed with an inner nest. A spring is provided in the inner nest. The lower end of the spring abuts against a movable column. A constraint hole is provided on the inner nest in a vertical orientation. A limit pin passes through the constraint hole and is fixed to the movable column. The lower end of the movable column is provided with a lower top recess (41). An outer horizontal plate (40) is fixed between the lower top recesses (41) by screws. A connecting lower shaft (42) is rotatably provided on the lower top recess (41). A traction wheel (43) is rotatably provided in the lower top recess (41). The traction wheel (43) is fixed on the connecting lower shaft (42). A driven gear (44) is provided on the connecting lower shaft (42). A drive gear meshes on the driven gear (44). A third motor (45) is fixed on the outer horizontal plate (40). The output shaft of the third motor (45) is connected to the drive gear.

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