Testing device

Abstract

The testing device provided by the invention comprises a testing step, and the testing step comprises at least two stages of pedal units; each pedal unit comprises a pedal and a vertical support, the pedal is connected to the vertical support, and the tread of the pedal extends in the horizontal direction; between the adjacent pedal units, the pedal unit at the lower stage is provided with a first sliding part, the pedal unit at the higher stage is provided with a second sliding part, and the first sliding part and the second sliding part are in sliding fit in the width direction of the tread; the pedal unit at the lower stage is driven to slide between a first position and a second position in the width direction of the tread relative to the pedal unit at the higher stage; relative to the first position, the pedal unit at the lower stage is far away from the pedal unit at the higher stage under the second position; and at the first position, the pedal at the lower stage is at least partially accommodated in the accommodating space under the pedal at the higher stage.

Description

Technical Field

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

[0002] In the research and development of knee exoskeleton products or humanoid robots, it is necessary to conduct walking tests on these products on steps.

[0003] Generally, the horizontal distance between adjacent treads of the test steps is fixed. After the number of treads of the test steps is determined, the floor area is still large when the test steps are not in use. Summary of the Invention

[0004] In order to solve the problem that the current test steps are inconvenient to store because the horizontal distance between adjacent treads is fixed, the present application provides a testing device with a relatively small external volume after storage.

[0005] The present invention provides a testing device, including test steps, and the test steps include at least two levels of tread units; Each of the tread units includes a tread and a vertical bracket, the tread is connected to the vertical bracket, and the tread surface of the tread extends in the horizontal direction; Between adjacent tread units, the lower-level tread unit is provided with a first sliding portion, and the higher-level tread unit is provided with a second sliding portion. The first sliding portion and the second sliding portion are slidably matched along the width direction of the tread surface, driving the lower-level tread unit to slide relative to the higher-level tread unit along the width direction of the tread surface between a first position and a second position; relative to the first position, in the second position, the lower-level tread unit is far from the higher-level tread unit; in the first position, at least part of the lower-level tread is received into the accommodation space directly below the higher-level tread.

[0006] Optionally, in the above-mentioned testing device, between adjacent tread units, in the second position, the lower-level tread is located outside the accommodation space directly below the higher-level tread.

[0007] Optionally, in the above-mentioned testing device, each of the tread units further includes a width bracket, the width bracket is located below the tread and extends along the width direction of the tread surface, and the first sliding portion and / or the second sliding portion in each of the tread units are arranged on the width bracket.

[0008] Optionally, in the above-mentioned testing device, at least two levels of the tread units include a primary tread unit and a final tread unit; In the primary pedal unit, the width bracket is provided with the first sliding part on the surface perpendicular to the tread surface, and the orientations of the two first sliding parts are opposite to each other; In the final pedal unit, the width bracket is provided with the second sliding part on the surface perpendicular to the tread surface, and the orientations of the two second sliding parts are opposite to each other.

[0009] Optionally, in the above-mentioned testing device, at least two levels of the pedal units further include at least one intermediate pedal unit, and the intermediate pedal unit is arranged between the primary pedal unit and the final pedal unit; in the intermediate pedal unit, each width bracket includes the first sliding part and the second sliding part with opposite orientations.

[0010] Optionally, in the above-mentioned testing device, the testing step further includes a horizontal locking mechanism, and the horizontal locking mechanism includes a locked state and an unlocked state; in the locked state, the mutually cooperating first sliding part is fixedly arranged relative to the second sliding part; in the unlocked state, the mutually cooperating first sliding part is slidably arranged relative to the second sliding part.

[0011] Optionally, in the above-mentioned testing device, the middle part of each tread surface is concavely formed to form a receiving cavity; the testing device includes a force measuring member, and the force measuring member is received in the receiving cavity, and the upper surface of the force measuring plate is flush with the tread surface.

[0012] Optionally, in the above-mentioned testing device, each pedal unit further includes a guardrail, and the guardrail is detachably connected to both sides in the length direction of the tread surface; the guardrail is provided with an avoidance notch, and when the lower-level pedal unit is in the first position, the adjacent higher-level pedal can be received in the avoidance notch.

[0013] Optionally, in the above-mentioned testing device, in each pedal unit, the pedal is slidably connected to the vertical bracket in the vertical direction; the width bracket is connected to the bottom end of the vertical bracket, and the width bracket includes a bracket support part, and the bracket support part faces the vertical bracket.

[0014] Optionally, in the above-mentioned testing device, in the first position, at least part of the lower-level vertical bracket is located in the accommodation space directly below the higher-level pedal together with the pedal; or In the first position, the lower-level vertical bracket is completely located outside the accommodation space directly below the higher-level pedal.

[0015] The test device provided by the present invention, the test step includes at least two pedal units, and adjacent pedal units can be slidably connected along the width direction of the tread surface. The lower pedal unit can slide between a first position and a second position relative to the higher pedal unit. Relative to the first position, in the second position, the lower pedal unit is away from the higher pedal unit; in the first position, at least part of the lower pedal is received in the accommodation space directly below the higher pedal. Thus, when needed, by sliding the lower pedal to the first position, the horizontal distance between adjacent pedals can be reduced, thereby reducing the external volume of the test step for easy storage and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings: Figure 1 It is a schematic structural diagram of the test step provided by the embodiment of the present invention when each pedal unit is in the first position; Figure 2 It is a schematic structural diagram of the test step provided by the embodiment of the present invention when each pedal unit is in the second position; Figure 3 is Figure 1 or Figure 2 a schematic structural diagram along the X direction in; Figure 4 is Figure 1 or Figure 2 an exploded view along the X direction; Figure 5 is Figure 1 a schematic structural diagram along the Z direction in; Figure 6 is Figure 2 a schematic structural diagram along the Z direction in; Figure 7 is Figure 5 or Figure 6 an exploded view along the X direction; Figure 8 It is the test step provided by the embodiment of the present invention from another perspective.

[0017] Reference numerals: 100 - test step; 10 - Pedal unit; 11 - Pedal; 111 - Tread surface; 112 - First side; 113 - Second side; 114 - Baffle; 115 - Wire passing hole; 116 - Annular support part; 12 - Vertical bracket; 121 - Inner side; 122 - Outer side; 13 - Accommodating space; 14 - Width bracket; 141 - First sliding part; 142 - Second sliding part; 143 - Accommodating part; 144 - Bracket support part; 15 - Length bracket; 16 - Force measuring member; 17 - Guardrail; 171 - Avoidance notch; 18 - Vertical lifting mechanism; 181 - Lifting guide rail; 182 - Lifting slider; 183 - Lifting lead screw; 184 - Motor; 19 - Caster wheel; 101 - Primary pedal unit; 102 - First intermediate pedal unit; 103 - Second intermediate pedal unit; 104 - Final pedal unit; Detailed implementation manner

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present invention.

[0019] As Figure 1 shown, an embodiment of the present invention provides a test step 100, and this test step 100 may be part or all of a test device.

[0020] Referring Figure 1 to Figure 2 and Figure 3 and Figure 4 , this test step 100 may include at least two levels of pedal units 10. Each level of pedal unit 10 includes a pedal 11 and a vertical bracket 12. The pedal 11 is connected to the vertical bracket 12. The tread surface 111 of the pedal 11 extends in the horizontal direction. There is an accommodating space 13 directly below (or vertically below) each pedal 11. Among them, this accommodating space 13 may be formed by the cooperation of each pedal 11 and the corresponding vertical bracket 12. Between adjacent pedal units 10, along the width direction of the tread surface 111 (corresponding Figure 1The lower pedal unit 10 is slidably connected to the higher pedal unit 10 along the X-axis (in the figure), and the lower pedal unit 10 can slide between a first position and a second position relative to the higher pedal unit 10. Among them, in the first position, the lower pedal unit 10 is relatively closer to the higher pedal unit 10 in the width direction of the tread surface 111, and the lower pedal 11 is at least partially received in the accommodation space 13 directly below the higher pedal 11. In the second position, the lower pedal unit 10 is farther away from the higher pedal unit 10 in the width direction of the tread surface 111 relative to the first position. Thus, without using the test step 100, by sliding the lower pedal 11 to the first position, the horizontal distance between adjacent pedals 11 can be reduced, thereby reducing the external volume of the test step 100 for easy storage and transportation. Moreover, adjacent pedal units 10 can slide relative to each other along the width direction of the tread surface 111 to adjust the horizontal distance between adjacent pedal units 10 or adjacent pedals 11. Thus, the horizontal distance between adjacent pedals 10 can be flexibly adjusted according to test requirements.

[0021] It can be seen that between adjacent pedal units 10, the lower pedal unit 10 can slide between a first position and a second position along the width direction of the tread surface 111 relative to the higher pedal unit 10, where the sliding is a reciprocating sliding between the first position and the second position. Of course, at least two levels of pedal units 10 can include a lower pedal unit 10 and a higher pedal unit 10.

[0022] Such as Figure 1 is a schematic structural diagram when each pedal unit 10 is in the first position; Figure 2 is a schematic structural diagram when each pedal unit 10 is in the second position.

[0023] It can be seen that in the embodiment of the present application, the lower pedal 11 can be at least partially slidably received in the accommodation space 13 of the higher pedal unit 10 along the width direction of the tread surface 111. Thus, the horizontal distance between adjacent pedals 11 is reduced, and further the external dimension of the test step 100 in the width direction of the pedal 11 is reduced, and the test step 100 is more convenient for storage and transportation.

[0024] In one embodiment, between adjacent pedal units 10, the lower pedal unit 10 is provided with a first sliding portion 141, and the higher pedal unit 10 is provided with a second sliding portion 142. The first sliding portion 141 and the second sliding portion 142 are slidably connected along the width direction of the tread surface 111, driving the lower pedal unit 10 to be able to slide between a first position and a second position along the width direction of the tread surface 111 relative to the higher pedal unit 10.

[0025] In the embodiments of the present application, the width direction and the length direction of the tread surface 111 can both be in the horizontal direction, that is, the tread surface 111 is horizontally arranged. At this time, the tread surface 111 is perpendicular to the vertical direction (or the vertical bracket 12). Of course, in some embodiments, the tread surface 111 may not be absolutely horizontal, but slightly inclined. At this time, the tread surface 111 is not absolutely perpendicular to the vertical direction (or the vertical bracket 12), and may be slightly inclined.

[0026] Among them, in the embodiments of the present application, the lower level and the higher level are relative. In the lower-level pedal unit 10, the tread surface 111 is closer to the plane of the support test step 100 (hereinafter referred to as the base surface), and in the higher-level pedal unit 10, the tread surface 111 is farther from the base surface. Correspondingly, the primary pedal unit 101 mentioned below refers to the unit with the tread surface 111 closest to the base surface, the final pedal unit 104 refers to the unit with the tread surface 111 farthest from the base surface, and the intermediate pedal unit is the unit arranged between the primary pedal unit 101 and the final pedal unit 104.

[0027] In the embodiments of the present application, among adjacent pedal units, the lower-level pedal unit (or tread surface, vertical bracket, etc.) can be called the first-level pedal unit (or tread surface, vertical bracket, etc.), and the higher-level pedal unit can be called the second-level pedal unit; if there are higher-level pedal units, they can be called the third-level pedal unit, the fourth-level pedal unit, etc. in sequence, and so on; or if there are lower-level pedal units, they can also be numbered in sequence. For example, in the embodiments mentioned below, the primary pedal unit, the first intermediate pedal unit, the second intermediate pedal unit, and the final pedal unit can be respectively called the first-level pedal unit, the second-level pedal unit, the third-level pedal unit, and the fourth-level pedal unit.

[0028] In the embodiments of the present application, the adjacent lower-level pedal unit and the higher-level tread surface unit refer to any two adjacent pedal units in the test step 100. In the embodiments of the present application, adjacent can be directly adjacent; of course, in some embodiments, adjacent can also be indirectly adjacent. In addition, the base surface can be understood as a horizontal plane.

[0029] The horizontal direction refers to the extension direction of the tread surface 111, and the vertical direction is perpendicular to the horizontal direction. The width direction and the length direction of the tread surface 111 are both perpendicular to the vertical direction. The width direction of the tread surface 111 refers to the horizontal extension direction from the lower-level (such as the primary) tread surface 111 to the higher-level (such as the final) tread surface 111, and the length direction of the tread surface 111 is perpendicular to the width direction of the tread surface 111. Of course, in the embodiments of the present application, perpendicular, vertical, horizontal, or parallel, etc. can be absolutely perpendicular, vertical, horizontal, or parallel, or non-absolute, such as approximately perpendicular, vertical, horizontal, or parallel.

[0030] Reference Figure 1 , Figure 3 , Figure 4 and Figure 5 It can be known that in a three-axis coordinate system, the X-axis is parallel to the width direction of the tread surface 111, the Y-axis is parallel to the length direction of the tread surface 111, and the Z-axis is parallel to the vertical direction.

[0031] Between adjacent pedal units 10, when the lower pedal 11 is in the first position, it can be in a storage state; in some cases, this storage state can also be a working state in which the test step 100 can be normally used for testing work; at this time, the vertical projection surface of the higher pedal 11 on the lower tread surface 111 at least partially falls on the lower tread surface 111.

[0032] In one embodiment, when the lower pedal unit 10 is in the second position, the entire lower pedal 11 can slide along the width direction of the tread surface 111 to the outside of the accommodation space 13 directly below the adjacent higher pedal 11. This unfolded state can be a working state for testing work; at this time, the vertical projection surface of the higher pedal 11 on the lower tread surface 111 falls outside the lower tread surface 111. Of course, as a variation, the lower pedal 11 in the second position can still be partially housed in the accommodation space directly below the higher pedal 11, but compared with the first position, the housing depth or housing degree in the second position should be smaller.

[0033] In each pedal unit 10, the number of vertical brackets 12 can be two (which can also be understood as a pair), or other numbers, so as to be able to support the pedal 11 smoothly. Among them, the vertical brackets 12 can be in the form of legs. If in the form of legs, the number can be 4, that is, 2 legs are equivalent to one vertical bracket 12, and the number of legs can also be more than 4 or less than 4. 4 legs can be arranged at the four corners of the square pedal 11.

[0034] When the number of the vertical brackets 12 is two, they can be disposed on both sides of the pedal 11 along the length direction of the pedal 11. Among them, a pair of vertical brackets 12 includes two inner sides 121 arranged oppositely and two outer sides 122 arranged away from each other, and the inner side 121 faces the pedal 11. Between adjacent pedal units 10, the horizontal distance between the two lower outer sides 122 can be less than the horizontal distance between the pair of higher inner sides 121, and the outer dimension of the lower vertical bracket 12 in the vertical direction can be less than the dimension of the higher vertical bracket 12 in the vertical direction. Thus, the outer height dimension and the length dimension of the two vertical brackets 12 gradually increase from the lower level to the higher level, and the appearance of the test step 100 is tidy; moreover, the lower vertical bracket 12 can be at least partially received in the accommodation space 13 of the higher level together with the pedal 11. Of course, as a variation, the outer dimension of the lower vertical bracket 12 in the vertical direction can be greater than or equal to the dimension of the higher vertical bracket 12 in the vertical direction, and the horizontal distance between the two lower outer sides 122 can be greater than or equal to the horizontal distance between the two higher inner sides 121.

[0035] Among them, the outer side 122 of the vertical bracket 12 can be a protective plate, and a vertical lifting mechanism 18 can be arranged on the inner side 121. A support skeleton can be arranged inside the vertical bracket 12, and the outer side 122 is a protective plate.

[0036] In one implementation, each pedal unit 10 can further include a width bracket 14. Each width bracket 14 extends along the width direction of the tread surface 111, and the extending direction can be perpendicular to the extending direction of the vertical bracket 12. The width brackets 14 between adjacent pedal units 10 can be slidably connected, thereby realizing the slidable connection of adjacent pedal units 10 along the width direction of the tread surface 111. Among them, the first sliding part 141 and / or the second sliding part 142 in each pedal unit 10 is arranged on the width bracket 14.

[0037] Among them, the number of the width brackets 14 of each pedal unit 10 can be the same as that of the vertical brackets 12, which is also two (or a pair) and are disposed on both sides of the pedal 11 along the length direction, so as to improve the smoothness of the relative sliding between the pedal units 10. For example, the two width brackets 14 can be disposed on both sides of the pedal 11 along the length direction in an axisymmetric form, and the smoothness of the sliding will be higher. Of course, as a variation, the number of the width brackets 14 can be 1 or more than 2 (that is, more than a pair). When the number of the width brackets 14 is 1, it can be placed in the middle below the pedal 11; when the number of the width brackets 14 is more than 2, they can be evenly spaced and arranged below the pedal 11 to improve the stability of the sliding along the horizontal direction.

[0038] Next, for the convenience of describing each pedal unit 10, the at least two - stage pedal units 10 implemented in this application may include a primary pedal unit 101 and a final pedal unit 104, as Figure 2 and Figure 5 shown. Among them, in the primary pedal unit 101, on the surface perpendicular to the tread surface 111 (or parallel to the vertical direction) of the width bracket 14, a first sliding portion 141 is provided, and the two first sliding portions 141 are arranged in opposite directions so as to be able to connect the second sliding portions 142 of adjacent pedal units 10. Among them, the first sliding portion 141 may face the second sliding portion 142 on the higher - level width bracket 14.

[0039] In the final pedal unit 104, on the surface perpendicular to the tread surface 111 (or parallel to the vertical direction) of the width bracket 14, a second sliding portion 142 is provided, and a pair of the second sliding portions 142 on the width bracket 14 are arranged oppositely; among them, the second sliding portion 142 may face the first sliding portion 141 on the lower - level width bracket 14. Between adjacent pedal units 10, the first sliding portion 141 is slidably connected to the second sliding portion 142, thereby realizing the slidable connection between adjacent pedal units 10. For example, a test step 100 includes two units, namely a primary pedal unit 101 and a final pedal unit 104. Then, the first sliding portion 141 of the primary pedal unit 101 can be slidably connected to the second sliding portion 142 of the final pedal unit 104, thereby realizing the relative sliding connection between the two. Of course, as a deformation, the width bracket 14 in the primary pedal unit 101 can include second sliding portions 142 arranged oppositely, and the two width brackets 14 in the final pedal unit 104 include first sliding portions 141 arranged in opposite directions, and the first sliding portion 141 is slidably connected to the second sliding portion 142. Among them, the number of width brackets 14 of the primary pedal unit 101 and the final pedal unit 104 may be two, and the corresponding first sliding portions 141 or second sliding portions 142 are also two.

[0040] In one embodiment, at least two levels of pedal units 10 may further include at least one intermediate pedal unit, which is slidably disposed between the primary pedal unit 101 and the final pedal unit 104 along the width direction of the tread surface 111. In each intermediate pedal unit, the width bracket 14 may include a first sliding portion 141 and a second sliding portion 142, wherein the second sliding portion 142 is used to connect the first sliding portion 141 of the lower-level pedal unit, and the first sliding portion 141 is used to connect the second sliding portion 142 of the higher-level pedal unit. Among them, in the test step 100, the number of intermediate pedal units may be 1, 2, 3 or more, etc. For example, in the embodiment of the present application, the first intermediate pedal unit 102 and the second intermediate pedal unit 103 are included, and it is appropriate that the number of pedals of the test step 100 meets the test requirements. As a variation, in each intermediate pedal unit, the second sliding portion 142 of the width bracket 14 is used to connect the first sliding portion 141 of the higher-level pedal unit, and the first sliding portion 141 is used to connect the second sliding portion 142 of the lower-level pedal unit 10.

[0041] In the embodiment of the present application, when including the adjacent first intermediate pedal unit 102 and the second intermediate pedal unit 103, as Figure 2 shown, the primary pedal unit 101 is adjacent to the first intermediate pedal unit 102, and the second intermediate pedal unit 103 is adjacent to the final pedal unit 104. When the pedal of the primary pedal unit 101 is in the first position, at least part of it can be slidably received into the accommodation space 13 of the first intermediate pedal unit 102, that is, into the accommodation space 13 directly below the tread surface 111 in the first intermediate pedal unit 102; when the pedal of the first intermediate pedal unit 102 is in the first position, at least part of it can be slidably received into the accommodation space 13 of the second intermediate pedal unit 103; when the pedal of the second intermediate pedal unit 103 is in the first position, at least part of it can be slidably received into the accommodation space 13 of the final pedal unit 104.

[0042] When including at least two intermediate pedal units, the vertical distance between the tread surface 111 relatively close to the primary pedal unit 101 and the base surface is less than the vertical distance between the tread surface 111 relatively close to the final pedal unit 104 and the base surface. In other words, from the primary pedal unit 101 to the final pedal unit 104, the vertical distances between the respective tread surfaces 111 and the base surface increase step by step, and the length dimensions of the respective tread surfaces 111 can also increase step by step.

[0043] To minimize the horizontal footprint of the entire test step 100 in the first position and facilitate the sliding connection between the width brackets 14, it can be arranged that in the first position, half of the area of the lower tread 111 (which can be approximately half, or deformed into one-third, two-thirds, one-fourth, or three-fourths, etc.) is located directly below the higher-level pedal 11, and half of the length of the lower-level width bracket 14 in the width direction of the tread 111 (such as approximately half, or deformed into one-third, two-thirds, one-fourth, or three-fourths, etc.) is also located directly below the higher-level pedal 11.

[0044] On each width bracket 14, the arrangement position or the slidable stroke of the first sliding portion 141 and the second sliding portion 142 in the width direction of the tread can be set to be adapted to the first position and the second position.

[0045] In one embodiment, the test step 100 may further include a horizontal locking mechanism (not shown in the figure). The horizontal locking mechanism can be independently provided on each pedal unit 10. The horizontal locking mechanism includes a locked state and an unlocked state. In the locked state, the adjacent pedal units 10 are relatively fixedly arranged. In the unlocked state, the adjacent pedal units 10 are slidably arranged along the width direction of the tread 111. Among them, when the width bracket 14 includes the second sliding portion 142 and / or the first sliding portion 141, in the locked state, the mutually cooperating first sliding portion 141 is fixedly arranged relative to the second sliding portion 142. In the unlocked state, the mutually cooperating first sliding portion 141 is slidably arranged relative to the second sliding portion 142.

[0046] In one embodiment, the first sliding portion 141 can be a horizontal slider, and the second sliding portion 142 can be a horizontal guide rail extending along the width direction of the tread 111; or, the second sliding portion 142 can be a horizontal slider, and the first sliding portion 141 can be a horizontal guide rail extending along the width direction of the tread 111. Correspondingly, the horizontal locking mechanism capable of switching between the locked state and the unlocked state can be a locking handle provided on the horizontal slider. Among them, the length of the horizontal guide rail in the width direction of the tread 111 can be half of the length of the width bracket 14 in the width direction of the tread 111; the horizontal slider can be arranged at the position closest to the higher level or the position closest to the lower level on one width bracket 14.

[0047] In one embodiment, each pedal unit 10 may further include a length bracket 15, which extends along the length direction of the tread surface 111 and is connected to the width bracket 14 to improve the strength of the pedal unit 10. Among them, two or more length brackets 15 may be provided on the primary pedal unit 101. The two length brackets 15 and the two width brackets 14 form a square shape and are distributed corresponding to the four corners of the tread surface 111. One or more length brackets 15 may be distributed on the intermediate pedal unit and the final pedal unit 104.

[0048] To test the object stepping on the pedal 11, a receiving cavity is recessed in the middle of each tread surface 111, and the force measuring member 16 of the test step 100 is received in the receiving cavity. Among them, the upper surface of the force measuring member 16 is flush with the tread surface 111 to facilitate the test object to walk on the pedal 11. Among them, the force measuring member 16 may be in the shape of a rectangular plate. Refer Figure 8 There is a wire passing hole 115 and an annular support portion 116 provided at the bottom of the receiving cavity. The annular support portion 116 supports the force measuring member 16 and surrounds the wire passing hole 115. If the force measuring member 16 needs to be connected to an external component through a wire, the wire can be connected to the external component and the force measuring member 16 from the wire passing hole 115. Among them, when the force measuring member 16 is stepped on, it may undergo a slight deformation. Therefore, if necessary, the force measuring member 16 and the receiving cavity may be in clearance fit; of course, if this slight deformation can be ignored, it may also be in interference fit.

[0049] In the embodiment of the present application, the number of stages of the pedal unit 10 in the test step may be 2, 3, 4, 5 or more.

[0050] In one embodiment, the tread surface 111 may be a rough surface or an anti-slip surface.

[0051] In one embodiment, each pedal unit 10 may further include a guardrail 17, which is provided on both sides in the length direction of the tread surface 111 to protect the object walking on the test step 100. For the convenience of storage and transportation, the guardrail 17 is detachably connected to the tread surface 111 so that the guardrail 17 can be detached from the pedal 11 during storage and transportation. The guardrail 17 and the pedal 11 may be connected by threads. Of course, the guardrail 17 may not be provided, or the guardrail 17 is non-detachably connected to the pedal 11.

[0052] In one embodiment, the guardrail 17 may be provided with an avoidance notch 171. When adjacent pedal units 10 approach each other along the width direction of the tread surface 111, the higher-level pedal 11 can be received in the lower-level avoidance notch 171. Thus, the guardrail 17 does not prevent the lower-level pedal 11 from being received in the accommodation space 13 of the higher-level pedal unit 10. In other words, the higher-level pedal 11 can overlap with the lower-level pedal 11 in the vertical direction. Among them, the overall structure of the guardrail 17 can be in an F shape or other shapes. Among them, the guardrail 17 of the ultimate pedal unit 104 may not be provided with the avoidance notch 171, and the guardrails 17 of other pedal units may be provided with the avoidance notch 171.

[0053] In practical applications, one or two levels of the pedals 11 can be set at the first position as needed, while the other levels of the pedals 11 are located at non-first positions, such as the second position, or a position between the first position and the second position. That is, the sliding of the pedals along the width direction of the tread surface 111 in each pedal unit 10 is independent, and one level of the pedal can be slid alone, while the other levels of the pedals do not slide along the width direction of the tread surface 111.

[0054] In one embodiment, in each pedal unit 10, the pedal 11 can be slidably connected to the corresponding vertical bracket 12 in the vertical direction between a third position and a fourth position, and the third position is lower than the fourth position. Among them, the sliding is a reciprocating sliding between the third position and the fourth position. Of course, as a variation, the pedal 11 and the vertical bracket 12 can also be other connection methods, such as a non-slidable connection method, or a fixed connection, etc.

[0055] Among them, each pedal unit 10 may include a vertical lifting mechanism 18. The vertical lifting mechanism 18 is connected between the pedal 11 and the vertical bracket 12 and can drive the pedal 11 to be slidably connected along the vertical direction of the vertical bracket 12 between the third position and the fourth position. Thus, each pedal 11 can slide up and down on the vertical bracket 12. The vertical lifting mechanism 18 may include a third sliding part and a fourth sliding part. The third sliding part is arranged on the pedal 11, and the fourth sliding part is arranged on the vertical bracket 12. The third sliding part and the fourth sliding part are slidably matched along the vertical direction of the vertical bracket to drive the pedal 11 to slide (lift and slide) between the third position and the fourth position in the vertical direction. The third sliding part may include a lifting slider, and the fourth sliding part may include a lifting guide rail.

[0056] Among them, the vertical lifting mechanism 18 includes a lifting driver, a lifting guide rail 181 and a lifting slider 182. The lifting guide rail 181 extends in the vertical direction and is arranged on the surface of the vertical bracket 12 facing the pedal 11. The lifting driver drives the lifting slider 182 to be slidably connected relative to the lifting guide rail 181. The pedal 11 may include a first side surface 112 and a second side surface 113. The first side surface 112 and the second side surface 113 are arranged back to back and are respectively located on both sides of the tread surface 111. The first side surface 112 and the second side surface 113 are both arranged on the lifting slider 182. Among them, in each pedal unit 10, the number of the vertical lifting mechanisms 18 may be two, which are respectively arranged on both sides in the length direction of the tread surface 111. Correspondingly, the first side surface 112 and the second side surface 113 are also respectively arranged on both sides in the length direction of the tread surface 111.

[0057] In the pedal 11, a square skeleton may be arranged below the tread surface 111 to support the tread surface 111. In the pedal 11, a baffle 114 may also be included. The baffle 114 is arranged between the first side surface 112 and the second side surface 113 and is perpendicular to the tread surface 111. The baffle 114 may be threadedly connected to the square skeleton.

[0058] See Figure 4 Among them, the width dimension of each tread surface 111 may be 300 mm to 500 mm. For example, 350 mm, 400 mm or 450 mm. The length dimension of each tread surface 111 increases with the increase of the number of steps. The length dimension of the primary tread surface 111 may be 1100 - 1300 mm, such as 1200 mm; the length dimension of the first intermediate tread surface 111 may be 1500 - 1600 mm, such as 1570 mm; the length dimension of the second intermediate tread surface 111 may be 1900 - 2000 mm, such as 1940 mm; the length dimension of the final tread surface 111 may be 2250 - 2400 mm, such as 2310 mm.

[0059] In an implementation manner, the vertical lifting mechanism 18 may be arranged axially symmetrically relative to the tread surface 111. Among them, the lifting driver may include a servo motor 184 and a screw jack. The lifting screw 183 of the screw jack is arranged in the vertical direction and is parallel to the lifting guide rail 181, and may also be arranged on the inner side surface 121 of the vertical bracket 12 together with the lifting guide rail 181.

[0060] Among them, the vertical lifting mechanism 18 may have a vertical locking mechanism (not shown in the figure). The vertical locking mechanism has an unlocking state and a locking state. In the unlocking state, the pedal 11 can be lifted and slid relative to the vertical bracket 12. In the locking state, the pedal 11 is fixedly arranged relative to the vertical bracket 12.

[0061] In one embodiment, the width bracket 14 can be disposed at the bottom end of the vertical bracket 12. The width bracket 14 can include a bracket support portion 144 which is disposed towards the vertical bracket 12 to support the vertical bracket 12. Thus, the slidable stroke of the pedal 11 relative to the vertical bracket 12 is relatively large, and the width bracket 14 will not interfere with the slidable connection between the pedal 11 and the vertical bracket 12. As a variation, the width bracket 14 can be connected to the middle part of the vertical bracket 12 and is located inside the pair of symmetrically arranged vertical brackets 12. Wherein, the width bracket 14 can include a receiving portion 143 (see Figure 4 and Figure 8 ). The opening of the receiving portion 143 can face downward to receive the servo motor 184, and the servo motor 184 passes through the width bracket 14 and is connected to the screw jack located above the width bracket 14. As a variation, the opening of the receiving portion 143 faces upward for receiving the servo motor 184 in the lifting drive.

[0062] In one embodiment, the vertical bracket 12 can further include a top end and a bottom end which are vertically disposed at both ends. Wherein, the top end can limit the fourth position of the pedal on the vertical bracket 12, and the bottom end can limit the third position of the pedal on the vertical bracket. In order to achieve reliable support of the base surface for the test step 100, the bottom ends of the respective vertical brackets 12 can be located on the same plane so as to be able to reliably contact the base surface. If the width bracket 14 is provided in the test step 100, it can be understood that the bracket support portions 144 of the respective width brackets 14 are located on the same plane, and the outer dimensions of the respective width brackets 14 in the vertical direction are the same. Also, if casters 19 are provided below the width bracket, the respective casters 19 are located on the same plane so as to be able to reliably contact the base surface.

[0063] In one embodiment, in the first position, the lower vertical bracket 12 can be at least partially located together with the pedal 11 in the accommodation space 13 directly below the higher pedal 11.

[0064] Considering that in each pedal unit 10, the pedal 11 and the vertical bracket 12 are slidably connected in the vertical direction, in order to avoid the situation that the lower vertical bracket 12 located in the accommodation space 13 directly below the higher pedal 11 causes the higher pedal 11 to be unable to lift freely, in the first position, the lower vertical bracket 12 should be completely located outside the accommodation space 13 directly below the higher pedal 11. Therefore, as Figure 2 、 Figure 6 and Figure 7 shown, except for the final pedal unit 104, the outer dimensions of the vertical bracket 12 along the width of the tread surface 111 in other pedal units are relatively small and can be aligned with the avoidance notch 171 on the guardrail 17 to avoid interfering with the lifting of the vertical bracket 12.

[0065] Thus, when each pedal unit 10 is in the first position, each pedal 11 can also be lifted and slid to the third position, and the guardrail 17 can be disassembled and placed above the tread surface 111. Thus, the external volume of the test step 100 can be further reduced.

[0066] In one embodiment, in order to avoid collisions, proximity switches (not shown in the figure) can be provided in each pedal unit 10 to limit the lifting stroke of each pedal 11. Similarly, another proximity switch can also be provided in each pedal unit 10 to limit the sliding stroke of each pedal unit 10 in the horizontal direction. Of course, as a variation, the proximity switch can be replaced with a limit switch or a travel switch.

[0067] In one embodiment, from the primary pedal unit 101 to the final pedal unit 104 (or rather, from the lower-level to the higher-level pedal units), the vertical distance between adjacent tread surfaces 111 can be adjustable within a range of 100 (corresponding to the above-mentioned third position) to 350 mm (corresponding to the above-mentioned fourth position). Taking the test step 100 including 4 pedal units 10 as an example, the vertical distance between the tread surface 111 in the primary pedal unit 101 and the base surface (the plane bearing the test step 100) is within the range of 100 to 350 mm, the vertical distance between the tread surface 111 in the first intermediate pedal unit and the base surface is within the range of 200 to 700 mm, the vertical distance between the tread surface 111 in the second intermediate pedal unit and the base surface is within the range of 300 to 1050 mm, and the vertical distance between the tread surface 111 in the final pedal unit 104 and the base surface is within the range of 400 to 1400 mm.

[0068] In one embodiment, the test device can also include a console (not shown in the figure), which can issue lifting signals for controlling each of the pedal units 10 and / or horizontal sliding signals along the width direction of the tread surface 111. Among them, the console includes a human-machine interaction interface, and the human-machine interaction interface includes a mechanical room and / or a touch display screen.

[0069] In one embodiment, there are buttons for each level of lifting on the human-machine interaction interface, and both rising and falling are jogging. When the user needs to adjust the height of the pedal 11, select the lifting button corresponding to the pedal 11 for each pedal unit 10 on the human-machine interaction interface and perform jogging lifting. Among them, a scale can be provided on the vertical bracket 12. After the user observes that the pedal 11 reaches the required height, the finger can be released to stop the lifting control. Of course, instead of providing a scale on the vertical bracket 12, a distance measuring sensor can be provided to monitor the distance between the pedal 11 and the base surface, that is, the height of the pedal 11 relative to the base surface, and the distance value is transmitted back to the console through a wireless signal and displayed on the touch display screen.

[0070] In one embodiment, the sliding adjustment between adjacent pedal units 10 in the width direction of the tread surface 111 can be manual adjustment; of course, in another embodiment, control information can also be sent by the console to perform the sliding adjustment of each pedal in the width direction of the tread surface 111.

[0071] In one embodiment, each pedal unit 10 is an overall axisymmetric structure; of course, it can also be that the pedal 11, the vertical bracket 12, the width bracket 14, etc. are axisymmetric structures. As Figure 3 shown, the test step 100 or each pedal unit 10 can form a symmetric structure with the axis A - A as the axis of symmetry, thereby improving the structural stability of the test step 100.

[0072] In one embodiment, in each pedal unit 10, the receiving portion 143 of the width bracket 14 can be provided with casters 19. The number of casters 19 can be 4, corresponding to the four corners of the square tread surface 111 respectively. The caster 19 has a sliding state and a self - locking state, and the caster 19 is detachably connected to the width bracket 14. In each pedal unit 10, the number of casters 19 can be 3 or 5 or more, etc., so as to facilitate the user to push the pedal unit 10 to move. Among them, the caster 19 can be a universal wheel or a round wheel that can only travel in the width direction of the tread surface 111. With the assistance of the caster 19, it is possible to more conveniently slide each pedal unit 10 relative to the adjacent pedal unit 10 in the width direction of the tread surface 111.

[0073] In application, the caster 19 can directly or indirectly contact and support the base surface of the test step 100.

[0074] In one embodiment, in the cross - section perpendicular to the extending direction of the width bracket 14, the cross - section of the width bracket 14 is in a door - shape. The inside of the door is the receiving portion 143, which can accommodate the caster 19 and / or the motor 184 of the vertical lifting mechanism. Above the door is the bracket supporting portion 144, which can support the vertical bracket 12. On both sides of the door are the second sliding portion 142 and the first sliding portion 141 respectively.

[0075] The width dimensions of the tread surfaces 111 in each level of pedal units 10 are the same, and the outer dimensions of the width brackets 14 of each level of pedal units 10 in the width direction of the tread surface 111 can be the same. Among them, the outer dimensions of each level of guardrails 17 in the width direction of the tread surface 111 are also the same.

[0076] As Figure 7As shown, the dimension of the vertical bracket 12 of the ultimate pedal unit 104 in the width direction of the tread surface 111 can be greater than the dimension of the vertical brackets 12 of other pedal units in the width direction of the pedal 11. Thus, when the widths of the tread surfaces 111 at all levels are the same and the dimensions of the width brackets 14 in the width direction of the tread surface 111 are also the same, it is possible to enable the lower-level pedals 11 to slide into the accommodation space of the higher-level pedal units 10. Among them, in the width direction of the tread surface 111, the outer dimension of the vertical bracket 12 of the ultimate pedal unit 104 can be twice the outer dimension of the vertical bracket 12 in other units.

[0077] In the width direction of the tread surface 111, among the other pedal units except the ultimate pedal unit 104, the outer dimension of the tread surface 111 can be approximately equal to or equal to the outer dimension of the guardrail 17, can also be equal to or approximately equal to the dimension of the width bracket 14, and is approximately twice the outer dimension of the vertical bracket 12 in this direction.

[0078] In the embodiments of the present application, the pedal or the tread surface can be understood as the step in the stairs or steps.

[0079] In the embodiments of the present application, adjacent tread surfaces refer to the upper and lower adjacent tread surfaces or the horizontally adjacent tread surfaces; adjacent pedal units refer to the pedal units with adjacent tread surfaces in the up and down direction or the horizontally adjacent pedal units with adjacent tread surfaces.

[0080] In the embodiments of the present application, adjacent can include direct adjacency and can also include indirect adjacency.

[0081] In the embodiments of the present application, a control method can also be provided. This control method is applied to the above test device and includes: adjusting the sliding direction and sliding amount of each level of pedal unit in the width direction of the tread surface; adjusting the lifting direction and lifting amount of each level of pedal unit in the vertical direction.

[0082] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0083] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of this application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0084] In this application, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "coupled", "fixed", etc. shall be construed broadly. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0085] The above are only embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the scope of the claims of the present invention.

Claims

1. A test device, characterized in that, including a test step, the test step including at least two levels of pedal units; each of the pedal units includes a pedal and a vertical bracket, the pedal being connected to the vertical bracket and the tread surface of the pedal extending in the horizontal direction; between adjacent pedal units, the lower-level pedal unit is provided with a first sliding portion, and the higher-level pedal unit is provided with a second sliding portion. The first sliding portion and the second sliding portion are slidably matched along the width direction of the tread surface, driving the lower-level pedal unit to slide relative to the higher-level pedal unit between a first position and a second position along the width direction of the tread surface; relative to the first position, in the second position, the lower-level pedal unit is away from the higher-level pedal unit; in the first position, at least a part of the lower-level pedal is received in the accommodation space directly below the higher-level pedal; 2. The test device according to claim 1, wherein among adjacent pedal units, in the second position, the lower-level pedal is located outside the accommodation space directly below the higher-level pedal; 3. The test device according to claim 1, characterized in that each of the pedal units further includes a width bracket, the width bracket being located below the pedal and extending along the width direction of the tread surface, and the first sliding portion and / or the second sliding portion in each of the pedal units being provided on the width bracket; 4. The test device according to claim 3, characterized in that at least two levels of the pedal units include a primary pedal unit and a final pedal unit; in the primary pedal unit, the width bracket is provided with the first sliding portion on the surface perpendicular to the tread surface, and the two first sliding portions are arranged with opposite orientations; in the final pedal unit, the width bracket is provided with the second sliding portion on the surface perpendicular to the tread surface, and the two second sliding portions are arranged with opposite orientations; 5. The testing device according to claim 4, characterized in that, at least two levels of the pedal units further include at least one intermediate pedal unit, the intermediate pedal unit being provided between the primary pedal unit and the final pedal unit; in the intermediate pedal unit, each of the width brackets includes the first sliding portion and the second sliding portion arranged with opposite orientations; 6. The testing device according to claim 4, characterized in that, the test step further includes a horizontal locking mechanism, the horizontal locking mechanism including a locked state and an unlocked state; in the locked state, the mutually cooperating first sliding portion is fixedly arranged relative to the second sliding portion; in the unlocked state, the mutually cooperating first sliding portion is slidably arranged relative to the second sliding portion; 7. The test device according to claim 1, characterized in that a middle part of each of the tread surfaces is recessed to form an accommodation cavity; the test device includes a force measuring member, the force measuring member being received in the accommodation cavity, and an upper surface of the force measuring plate being flush with the tread surface; 8. The test device according to claim 1, characterized in that, each of the pedal units further includes a guardrail, the guardrail being detachably connected to two sides in the length direction of the tread surface; the guardrail is provided with an avoidance notch, and when the lower-level pedal unit is in the first position, the adjacent higher-level pedal can be received in the avoidance notch; 9. The testing device according to claim 1, wherein in each of the pedal units, the pedal is slidably connected to the vertical bracket in the vertical direction; the width bracket is connected to the bottom end of the vertical bracket, and the width bracket includes a bracket support portion, the bracket support portion facing the vertical bracket.

10. The testing device according to claim 1, wherein, When in the first position, at least a part of the lower vertical bracket is located together with the pedal in the accommodation space directly below the higher pedal; or When in the first position, the lower vertical bracket is completely located outside the accommodation space directly below the higher pedal.

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