Safety locking module, damping protection device and motion platform

Abstract

The utility model provides a safety locking module, a damping protection device and a motion platform, and relates to the technical field of precision equipment. The safety locking module comprises a top plate, a limiting rod, a base and a locking limiting assembly. One end of the limiting rod is fixedly connected with the top plate; the other end of the limiting rod is movably arranged on the base; the locking limiting assembly is arranged outside the limiting rod in a sleeving mode and used for limiting movement of the top plate and / or the limiting rod relative to the base.

Description

TECHNICAL FIELD

[0001] Embodiments of the present specification relate to the technical field of precision equipment, and in particular to a safe locking module, a shockproof protection device and a motion platform. BACKGROUND

[0002] The motion platform can include a motion mechanism and a platform carrying the motion mechanism, the motion of the motion mechanism can generate an impact on one or more directions of the platform, and a displacement and / or rotation in two directions in the vertical direction and / or the plane of the platform based on the impact. The limiting or locking device can limit the displacement and / or rotation, but multiple limiting or locking devices may be required to provide limiting in multiple directions. In addition, the range of the motion limit position of the limiting or locking device is not adjustable, which is difficult to adapt to the use demand. CONTENT OF THE UTILITY MODEL

[0003] One or more embodiments of the present specification provide a safe locking module, including a top plate, a limiting rod, a base and a locking limiting assembly; one end of the limiting rod is fixedly connected with the top plate; the other end of the limiting rod is movably arranged on the base; the locking limiting assembly is sleeved outside the limiting rod, and is used for limiting the motion of the top plate and / or the limiting rod relative to the base.

[0004] In some embodiments, the locking limiting assembly includes an adjusting nut and a locking fixing member; the adjusting nut is sleeved outside the limiting rod and can slide relative to the limiting rod; the locking fixing member is fixedly connected with the base, the locking fixing member is sleeved outside the limiting rod and the adjusting nut, and the adjusting nut can move and be fixed relative to the locking fixing member.

[0005] In some embodiments, the locking limiting assembly further includes a buffer pad, the buffer pad is arranged on the locking fixing member, and the top plate can abut against the adjusting nut and / or the buffer pad.

[0006] In some embodiments, the adjusting nut has an adjusting nut boss; the adjusting nut boss has a first limiting surface facing the top plate, and the first limiting surface is used for limiting the motion of the top plate towards the base.

[0007] In some embodiments, the adjusting nut boss further has a second limiting surface facing the locking fixing member, and the second limiting surface is used for limiting the position of the adjusting nut boss relative to the locking fixing member.

[0008] In some embodiments, the other end of the limiting rod is provided with a limiting rod head, the limiting rod head is provided with a third limiting surface facing the locking fixing member, the third limiting surface is used to prevent the limiting rod from being separated from the base; the limiting rod head is also provided with a fourth limiting surface facing the base, the fourth limiting surface is used to limit the movement of the top plate towards the base.

[0009] In some embodiments, the other end of the limiting rod is provided with a limiting rod head, a limiting rod slot for accommodating the limiting rod head is formed on the base, a gap is formed between the outer periphery of the limiting rod head and the side wall of the limiting rod slot, and a gap is formed between the outer periphery of the limiting rod and the inner wall of the adjusting nut.

[0010] In some embodiments, the locking limiting assembly further comprises a buffer pad, the top plate is capable of abutting against at least one of the first limiting surface and the buffer pad, and the thickness of the buffer pad is greater than the thickness of the adjusting nut boss.

[0011] One or more embodiments of the present specification provide a shock-absorbing protection device, which is arranged between a first platform and a second platform, the second platform is located above the first platform; the shock-absorbing protection device comprises a shock absorber and a safety locking module as described in any one of the above embodiments; the shock absorber and the safety locking module are connected between the first platform and the second platform.

[0012] In some embodiments, further comprising: a buffer limiting module, the buffer limiting module is connected between the first platform and the second platform; the buffer limiting module is used to absorb impact force provided by the second platform in a first direction and / or a second direction parallel to the first platform.

[0013] In some embodiments, the buffer limiting module comprises: a first fixing member fixedly connected with the first platform; a buffer member fixedly connected with the first fixing member, the buffer member extends in the first direction and / or the second direction, and the buffer member is used to absorb impact force provided by the second platform in the first direction and / or the second direction parallel to the first platform; and a second fixing member connecting the buffer member and the second platform.

[0014] In some embodiments, the shock absorber is used to absorb impact force provided by the second platform in a third direction perpendicular to the first platform.

[0015] One or more embodiments of the present specification provide a motion platform, comprising: a first platform and a second platform and a shock-absorbing protection device as described in any one of the above embodiments, the shock-absorbing protection device is arranged between the first platform and the second platform.

[0016] In some embodiments, the motion platform further comprises: a motion mechanism moving along a second direction on the second platform; two counterweights respectively arranged on two sides of the motion mechanism along the first direction; a first linear driving device mounted between the counterweights and the motion mechanism, the first linear driving device being configured to drive the motion mechanism to move along the second direction; and a second linear driving device mounted between the second platform and the counterweights, the second linear driving device being configured to drive the two counterweights to move along the second direction, the two counterweights moving in opposite directions to the motion mechanism.

[0017] In some embodiments, the counterweight comprises a first block and a second block, the first block being connected to the first linear driving device, and the second block being connected to the second linear driving device; wherein the first block and the second block are connected by one or more flexible connecting members.

[0018] The beneficial effects possibly brought by the embodiments of the present specification include but are not limited to: (1) the movement range of the limiting rod is limited by the base, and the movement of the top plate and / or the limiting rod is limited by the locking limiting member; (2) the movement of the limiting rod in two directions in the plane is limited by the base and the locking limiting member, and the movement of the top plate and / or the limiting rod in the vertical direction is limited by the locking limiting member; (3) the limiting stroke is adjusted by the adjusting nut and the locking fixing member; (4) the limiting stroke can be adjusted to zero by the adjusting nut, so as to realize rigid fixing of the base and the top plate; (5) part of the impact force is absorbed by the buffer pad before rigid limiting, so as to avoid impact on the base and the structure connected to the base; (6) the movement of the top plate towards the base is limited by the first limiting surface; (7) the position of the adjusting nut relative to the locking fixing member is limited by the second limiting surface; (8) the limiting rod is prevented from being separated from the base by the third limiting surface; (9) the movement of the top plate towards the base is limited by the fourth limiting surface; (10) the shock of the movement of the second platform relative to the first platform is realized by the shock absorber; (11) the impact force in one or more directions in the plane is absorbed by the buffer limiting module; (12) the influence of the motion mechanism on the second platform when moving is reduced by the opposite movement of the counterweight relative to the motion mechanism; (13) the flexible connection between the first block and the second block of the counterweight is realized by the flexible connecting member, the movement difference between the first block and the second block is reduced, and the influence of the movement of the counterweight on the second platform is reduced. It should be noted that different embodiments can have different beneficial effects, and in different embodiments, the beneficial effects that can be produced can be any one or a combination of the above, or any other beneficial effects that can be obtained. BRIEF DESCRIPTION OF DRAWINGS

[0019] The present specification will be further explained in the way of example embodiments, which will be described in detail with reference to the accompanying drawings. Like numbers refer to like structures or steps in the accompanying drawings.

[0020] Figure 1 is a schematic view of a motion platform according to some embodiments of the present specification.

[0021] Figure 2 is a schematic view of a first platform of a motion platform according to some embodiments of the present specification.

[0022] Figure 3 is a partial enlarged view of Figure 2

[0023] Figure 4 is a perspective view of a safety lock module of a shock protection device of a motion platform according to some embodiments of the present specification.

[0024] Figure 5 is a sectional view of a safety lock module of a shock protection device of a motion platform according to some embodiments of the present specification.

[0025] Figure 6 is a front view of a second platform of a motion platform according to some embodiments of the present specification.

[0026] Figure 7 is a schematic view of a motion mechanism of a motion platform according to some embodiments of the present specification.

[0027] Figure 8 is a schematic view of a balance mass and a second linear drive device of a motion platform according to some embodiments of the present specification.

[0028] Figure 9 is an exploded view of a balance mass and a second linear drive device of a motion platform according to some embodiments of the present specification.

[0029] Figure 10 , Figure 11 is a schematic view of a flexible connection of a motion platform according to some embodiments of the present specification.

[0030] ​Marked in the figure: 11 first platform; 12 second platform; 2 shock absorber; 3 safety locking module; 31 top plate; 32 limit rod; 320 limit rod head; 33 base; 34 locking limit assembly; 341 adjusting nut; 3410 adjusting nut boss; 342 locking fixed member; 343 buffer pad; 41 first limit surface; 42 second limit surface; 43 third limit surface; 44 fourth limit surface; 5 buffer limit module; 51 first fixed piece; 52 buffer piece; 53 second fixed piece; 61 second direction linear guide device; 62 movement mechanism; 63 balance mass; 64 first linear drive device; 65 second linear drive device; 631 first block; 632 second block; 633 flexible connecting piece; 6331 fixed part; 6332 flexible part; 634, rigid limiting piece. DETAILED DESCRIPTION

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present specification, the embodiments will be described in detail below with reference to the drawings. Obviously, the following description is some examples or embodiments of the present specification, and those skilled in the art can also apply the technical solutions or means disclosed in the present specification to other scenarios without creative labor.

[0032] It should be understood that the "system", "device", "equipment", "part" and / or "unit" and / or "module" used in the present specification is a method for distinguishing different components, elements, parts, parts or assemblies at different levels. However, if other words can achieve the same purpose, the words can be replaced by other expressions.

[0033] In the present specification, the technical terms of components, elements, etc. are not specified by single number, but can also include plural. Generally speaking, the terms "include", "contain" and the like only indicate the inclusion of the steps, elements or components explicitly identified, and these steps, elements and components do not constitute an exclusive list, and the method or device described can also include other steps or components.

[0034] In the description of the present specification, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right and the like, is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present specification, unless otherwise expressly limited, the words setting, mounting, connecting and the like should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above words in the present specification in combination with the specific content of the technical solution.

[0035] The motion platform can include a motion mechanism and a platform carrying the motion mechanism. In some embodiments, the motion of the motion mechanism can generate an impact on one or more directions of the platform, and generate displacement and / or rotation in the vertical direction (i.e. the z-axis direction of the platform) and / or in two directions in the plane where the platform is located (e.g. the y-axis direction or the x-axis direction of the platform) based on the impact. In some embodiments, in order to reduce or avoid the impact, the motion platform can include a first platform and a second platform located above the first platform, and the motion mechanism is carried by the second platform. In some embodiments, various types of buffering devices and limiting or locking devices can be arranged between the first platform and the second platform in various directions to absorb the impact generated by the motion mechanism on the second platform, resist displacement or rotation generated by the impact force, and maintain a stable motion environment.

[0036] In some embodiments, the second platform can have separate displacement, composite displacement, separate rotation, and composite rotation in the vertical direction of the second platform and / or in two directions in the plane where the second platform is located relative to the first platform. In some cases, the impact force causing the displacement and / or the rotation can still exceed the designed value after the energy absorption of the buffering device, so a limiting device or a locking device is needed to limit the maximum displacement and / or the maximum rotation of the second platform relative to the first platform.

[0037] In some related embodiments, the limiting or locking device can limit the motion limit position (or stroke) of the second platform relative to the first platform in a certain direction, and multiple limiting or locking devices can be needed for limiting in multiple directions. In addition, in some related embodiments, the range of the motion limit position of the limiting device and the locking device is not adjustable, which is difficult to adapt to the use requirements.

[0038] Therefore, one or more embodiments of the present specification provide a safety locking module which can simultaneously limit the displacement and rotation of the second platform relative to the first platform in the vertical direction and in two directions in the plane, and can adjust the range of the motion limit position, and can further selectively have a fixed vertical distance of the second platform relative to the first platform for transportation.

[0039] Figure 4 is a perspective view of a safety locking module of a shock protection device of a motion platform according to some embodiments of the present specification, Figure 5 is a cross-sectional view of a safety locking module of a shock protection device of a motion platform according to some embodiments of the present specification. See Figure 4 、 Figure 5As shown, in one or more embodiments of the present disclosure, the safety locking module can be used to prevent the slippage or sliding of the second platform during high acceleration impact, and can be used to achieve rigid limiting. The safety locking module can include a top plate 31, a limiting rod 32, a base 33, and a locking limiting component 34. In some embodiments, the base 33 can be fixed to one of the first platform or the second platform, and the top plate 32 can be fixed to the other one of the first platform or the second platform. Taking the case where the base 33 is fixed to the first platform and the top plate 32 is fixed to the second platform as an example, in some embodiments, one end of the limiting rod 32 is fixedly connected to the top plate 31, and the top plate 31 is used to receive the impact force of the second platform and transmit the movement of the second platform to the movement of the limiting rod 32. In some embodiments, the other end of the limiting rod 32 is movably arranged on the base 33, and the displacement of the limiting rod 32 in the y-axis direction and the x-axis direction is limited by the base 33 fixed to the first platform, wherein the y-axis direction can be the left-right direction in Figure 5 , and the x-axis direction can be the front-back direction in Figure 5 .

[0040] In some embodiments, the locking limiting component 34 is sleeved outside the limiting rod 32, and can be used to limit the movement of the top plate 31 and / or the limiting rod 32 relative to the base 33. In some embodiments, the locking limiting component 34 can limit the displacement of the top plate 31 relative to the base 33 by limiting the movement of the limiting rod 32, and further limit the displacement of the second platform relative to the first platform. In some embodiments, the locking limiting component 34 can be specifically used to limit the displacement of the top plate 31 and / or the limiting rod 32 relative to the base 33 in the z-axis direction, wherein the z-axis direction can be the up-down direction in Figure 5 . In some embodiments, the locking limiting component 34 can further limit the displacement of the limiting rod 32 relative to the base 33 in the y-axis direction and the x-axis direction.

[0041] In some embodiments, a plurality of safety locking modules can be arranged between the first platform and the second platform. For example, three or more non-collinear safety locking modules can be arranged. For example, a plurality of locking points can be arranged on the second platform, and one safety locking module can be arranged at each locking point. Each safety locking module can have the same limiting stroke. In some embodiments, the number of locking points can be three, and the locking points can be arranged in a ring array relative to the center of the second platform. In other embodiments, the number of locking points can be four, and the four locking points can be located at the four corners of a rectangular second platform, or at the four edges of a rectangular second platform. In other embodiments, the number of locking points can also be more.

[0042] In some embodiments, the plurality of safety locking modules can limit the displacement of the second platform relative to the first platform (e.g., displacement along the x-axis direction, the y-axis direction, and / or the z-axis direction), for example, when the second platform is displaced relative to the first platform, several locking points on the second platform move synchronously relative to the first platform. In some embodiments, the plurality of safety locking modules can have the same limiting travel (e.g., the distance that the top plate 31 and / or the limiting rod 32 is allowed to move towards the bottom plate 33), at which time several locking points on the second platform are simultaneously limited by the safety locking modules, causing the second platform to be in a parallel state with the first platform at the maximum displacement (i.e., the closest distance between the second platform and the first platform).

[0043] In some embodiments, the plurality of safety locking modules can also limit the rotation of the second platform relative to the first platform (e.g., rotation around the x-axis direction and / or the y-axis direction). For example, when the second platform is rotated relative to the first platform, several locking points on the second platform move asynchronously relative to the first platform. In some embodiments, the plurality of safety locking modules can have the same limiting travel (e.g., the distance that the top plate 31 and / or the limiting rod 32 is allowed to move towards the bottom plate 33), at which time one or more of several locking points on the second platform are first limited by the corresponding safety locking modules, and the remaining locking points are then respectively limited by the corresponding safety locking modules, causing the second platform to eventually be in a parallel state with the first platform at the maximum displacement. In other embodiments, the plurality of safety locking modules can also have different limiting travels, causing the second platform to eventually be in a predetermined pose at the maximum displacement.

[0044] By analogy, the plurality of safety locking modules can further limit the combined displacement and rotation of the second platform relative to the first platform.

[0045] In one or more embodiments of the present specification, the locking and limiting assembly 34 comprises an adjusting nut 341 and a locking and fixing member 342, the adjusting nut 341 is sleeved outside the limiting rod 32 and can slide relative to the limiting rod 32, the locking and fixing member 342 is fixedly connected with the base 33, the locking and fixing member 342 is sleeved outside the limiting rod 32 and the adjusting nut 341, and the adjusting nut 341 can move and be fixed relative to the locking and fixing member 342. In some embodiments, the adjusting nut 341 is kept stationary relative to the base 33 in the y-axis direction and the x-axis direction by the locking and fixing member 342, there is a gap between the outer periphery of the limiting rod 32 and the inner wall of the adjusting nut 341, the adjusting nut 341 can limit the displacement of the limiting rod 32 in the y-axis direction and the x-axis direction, thereby limiting the displacement of the second platform relative to the first platform in the y-axis direction and the x-axis direction. The adjusting nut 341 can also limit the displacement of the top plate 31 and / or the limiting rod 32 in the z-axis direction towards the base 33, thereby limiting the displacement of the second platform relative to the first platform in the z-axis direction towards the first platform. In some embodiments, by adjusting the position of the adjusting nut 341 relative to the locking and fixing member 342, the maximum stroke of the movement of the second platform relative to the first platform in the z-axis direction towards the first platform can be adjusted.

[0046] In some embodiments, the adjusting nut 341 can be threadedly connected with the locking and fixing member 342, by rotating the adjusting nut 341 to enable the adjusting nut 341 to move in the z-axis direction relative to the locking and fixing member 342, and by keeping the adjusting nut 341 stationary to enable the adjusting nut 341 to be stationary in the z-axis direction relative to the locking and fixing member 342. In some embodiments, the thread connection of the adjusting nut 341 and the locking and fixing member 342 provides stable height adjustment, and the adjusting nut 341 can be temporarily fixed at any position where it is screwed into the locking and fixing member 342 by means of thread connection, without the need for additional locking structure, and the adjustment is convenient.

[0047] In some embodiments, the locking and limiting assembly 34 further comprises a buffer pad 343, which is arranged on the locking and fixing member 342, and the top plate 31 can abut against the adjusting nut 341 and / or the buffer pad 343. In some embodiments, the adjusting nut 341 can be rotated to protrude from the buffer pad 343, and when the second platform is impacted and the top plate 31 moves downward, the adjusting nut 341 can be directly abutted by the second platform, thereby achieving rigid limiting. In other embodiments, the adjusting nut 341 can be rotated to be flush with the buffer pad 343, and when the second platform is impacted and the top plate 31 moves downward, the adjusting nut 341 and the buffer pad 343 can be simultaneously abutted by the second platform. In yet other embodiments, the adjusting nut 341 can be rotated to make the buffer pad 343 protrude from the adjusting nut 341, and when the second platform is impacted and the top plate 31 moves downward, the buffer pad 343 can be abutted by the second platform, thereby absorbing the impact force, and when the buffer pad 343 cannot completely absorb the impact force, the buffer pad 343 can be further compressed and abut against the adjusting nut 341, thereby achieving rigid limiting after energy absorption.

[0048] Referring to Figure 5 As shown, the thickness of the buffer pad 343 can be greater than the thickness of the adjusting nut boss 3410, so that the top plate 31 can first contact the buffer pad 343 and absorb a portion of the impact force in some cases, and then abut against the adjusting nut 341 for rigid limiting, so as to prevent the impact force of the second platform from being directly transmitted to the first platform through the adjusting nut 341, the locking and fixing member 342 and the base 33, thereby causing damage to the components.

[0049] In one or more embodiments of the present specification, the adjusting nut 341 has an adjusting nut boss 3410, which has a first limiting surface 41 (e.g., the upper surface of the adjusting nut boss 3410) facing the top plate 31, and when the second platform moves downward with the top plate 31, the first limiting surface 41 can be abutted by the second platform, and the first limiting surface 41 is used to limit the movement of the top plate 31 toward the base 33.

[0050] Since the base plate 33 and the locking and fixing member 342 are fixedly arranged relative to the first platform, the displacement of the adjusting nut 341 in the z-axis direction can adjust the maximum distance between the first limiting surface 41 and the upper surface of the first platform, thereby adjusting the movement limit position of the second platform. For example, referring to Figure 4 、 Figure 5As shown, when the adjusting nut 341 is raised, the range of displacement of the second platform with the top plate 31 towards the first platform is reduced; when the adjusting nut 341 is lowered, the range of displacement of the second platform with the top plate 31 towards the first platform is increased. In some embodiments, the adjusting nut 341 can be further raised to the maximum limit position against the top plate 31, at which time the range of the movement limit position of the second platform is zero, i.e. the second platform cannot be close to the first platform, achieving the effect of rigidly fixed connection of the second platform with the first platform, so that the second platform can be kept fixed relative to the first platform without vibration or shaking during transportation.

[0051] In some embodiments, the adjusting nut boss 3410 is further provided with a second limit surface 42 (for example, the lower surface of the adjusting nut boss 3410) facing the locking and fixing member 342, which is used to limit the position of the adjusting nut boss 3410 relative to the locking and fixing member 342. In some embodiments, referring to Figure 5 As shown, the outer diameter of the adjusting nut boss 3410 is greater than the inner diameter of the locking and fixing member 342, so that the second limit surface 42 can be against the surface of the locking and fixing member 342 facing the second platform (for example, a part of the upper end surface of the locking and fixing member 342), thereby limiting the lowermost limit position of the adjusting nut 341.

[0052] In some embodiments, the outer diameter of the adjusting nut boss 3410 is smaller than the outer diameter of the locking and fixing member 342, so as to reserve space for the buffer pad 343 on the surface of the locking and fixing member 342 facing the second platform. In some embodiments, the buffer pad 343 is arranged around the adjusting nut boss 3410. In some embodiments, the number of buffer pads 343 can be one or more, and the buffer pad 343 can be annular, semi-annular, C-shaped, etc. In some embodiments, the number of buffer pads 343 can be more, and the plurality of buffer pads 343 are arranged in an annular shape. In some embodiments, the buffer pad 343 can be a polyurethane soft pad, or can be rubber, silicone, etc.

[0053] Referring to Figure 4 , Figure 5 As shown, in one or more embodiments of the present specification, the other end of the limit rod 32 is provided with a limit rod head 320, which is provided with a third limit surface 43 (for example, the upper surface of the limit rod head 320) facing the locking and fixing member 342, which is used to prevent the limit rod 32 from being detached from the base 33. In some embodiments, the third limit surface 43 cooperates with the locking and fixing member 342 to prevent the limit rod 32 from being detached from the base 33. For example, the inner diameter of the locking and fixing member 342 is smaller than the outer diameter of the third limit surface 43, so that when the limit rod 32 is moved towards the base 33, the third limit surface 43 is against the inner surface of the locking and fixing member 342, thereby preventing the limit rod 32 from being detached from the base 33. Figure 5When the third limiting surface 43 moves upward, the upper surface of the third limiting surface 43 cannot be separated from the bottom 33 because the lower surface of the locking fixing member 342 abuts against the upper surface of the third limiting surface 43. In some embodiments, the bottom 33 and the locking fixing member 342 form a limiting rod head portion accommodating space for accommodating the limiting rod head portion 320. For example, a limiting rod slot for accommodating the limiting rod head portion 320 is formed on the bottom 33. The outer periphery of the limiting rod head portion 320 and the side wall of the limiting rod slot have a gap therebetween. The surface of the locking fixing member 342 and the limiting rod slot form the limiting rod head portion accommodating space. The limiting rod head portion 320 can move within a certain range in the y-axis direction (left-right direction) of the limiting rod head portion accommodating space, the x-axis direction (front-rear direction) of the limiting rod head portion accommodating space, and / or the z-axis direction (up-down direction) of the limiting rod head portion accommodating space, and cannot be separated from the limiting rod head portion accommodating space, thereby achieving the limiting of the limiting rod 32 by the bottom 33 and the locking fixing member 342 in the three directions. Figure 5 Figure 5 Figure 5

[0054] In some embodiments, the gap between the limiting rod 32 and the adjusting nut 341, and the gap between the outer periphery of the limiting rod head portion 320 and the inner wall of the bottom 33 can be 1-3 mm, for example, 1.5-2.5 mm. For example, the gap between the limiting rod 32 and the adjusting nut 341, or the gap between the outer periphery of the limiting rod head portion 320 and the inner wall of the bottom 33 can be 1 mm, 1.2 mm, 1.4 mm, 1.5 mm, 1.68 mm, 2 mm, 2.75 mm, or 3 mm.

[0055] In some embodiments, when the limiting rod 32 is displaced in the x-axis direction or the y-axis direction due to the impact force of the second platform, the limiting rod 32 can first be limited by the adjusting nut 341 in the x-axis direction and the y-axis direction of the limiting rod rod portion, and then be limited by the bottom 33 in the x-axis direction and the y-axis direction of the limiting rod head portion 320, or vice versa. In some embodiments, the gap between the limiting rod 32 and the adjusting nut 341, and the gap between the limiting rod head portion 320 and the bottom 33 can be adjusted to adjust the above-mentioned limiting sequence. In some embodiments, the component that first limits the limiting rod 32 is prone to deformation or loosening due to frequent impact. By arranging the above-mentioned limiting sequence, the component that is prone to replacement can be adjusted according to actual needs, and it is determined whether the component needs to be replaced based on this, and when one of the two components fails, the other component can still maintain work (redundant design). For example, in the case where the adjusting nut 341 is first impacted by the limiting rod 32 and the bottom 33 is then impacted by the limiting rod 32, it can be considered that the adjusting nut 341 can be deformed, loosened, or damaged when the bottom 33 is impacted by the limiting rod 32. At this time, the adjusting nut 341 can be replaced to maintain the stability of the mechanism. ​​​

[0056] In some embodiments, the limiting rod 32 can be simultaneously limited by the buffer pad 343 and the base 33, or simultaneously limited by the adjusting nut 341 and the base 33, or simultaneously limited by the buffer pad 343, the adjusting nut 341 and the base 33, so as to increase the limiting area and reduce the pressure generated by the impact force.

[0057] In some embodiments, the limiting rod head 320 further has a fourth limiting surface 44 facing the base 33, which is used to limit the movement of the top plate 31 towards the base 33, and limit the displacement of the limiting rod 32 in the z-axis direction through the base 33.

[0058] In some embodiments, when the limiting rod 32 is displaced in the z-axis direction due to the impact force of the second platform, the limiting rod 32 can first be limited in the z-axis direction by the buffer pad 343 and the adjusting nut 341, and then be limited in the z-axis direction by the base 33, or vice versa. Based on the similar redundancy design principle as described above, the deformed, loose or damaged components can be replaced in time, while maintaining the stability of the mechanism.

[0059] In some embodiments, the limiting rod 32 can be simultaneously limited by the buffer pad 343 and the base 33, or simultaneously limited by the adjusting nut 341 and the base 33, or simultaneously limited by the buffer pad 343, the adjusting nut 341 and the base 33, so as to increase the limiting area and reduce the pressure generated by the impact force.

[0060] Referring to Figures 1 to 6 As shown, one or more embodiments of the present specification provide a shock-absorbing protection device capable of absorbing or partially absorbing the impact force of the second platform relative to the first platform in the x-axis direction, the y-axis direction, and / or the z-axis direction, and achieving the limitation of the displacement and rotation of the second platform relative to the first platform in the vertical direction and in two directions in the plane, while being capable of adjusting the range of the movement limit position, and further being capable of selectively fixing the vertical distance of the second platform relative to the first platform to adapt to transportation.

[0061] In one or more embodiments of the present specification, the shock-absorbing protection device is arranged between the first platform 11 and the second platform 12, and the second platform 12 is located above the first platform 11. In some embodiments, the shock-absorbing protection device comprises a shock absorber 2 and a safety locking module 3, wherein the shock absorber 2 and the safety locking module 3 are connected between the first platform 11 and the second platform 12. In some embodiments, the shock absorber 2 is used to absorb the impact force in the z-axis direction provided by the second platform 12 to the first platform 11.

[0062] Referring to Figure 2As shown, in some embodiments, the number of shock absorbers 2 can be four, and the four shock absorbers 2 are arranged at the four corners of the first platform 11 respectively. In some embodiments, the shock absorbers 2 are used to absorb the impact force in the third direction perpendicular to the first platform 11 provided by the second platform 12, for example, the impact force in the z-axis direction. In some embodiments, the shock absorbers 2 can be passive shock absorbers, such as rubber blocks, elastic bodies, air bags, etc. In other embodiments, the shock absorbers 2 can also be active shock absorbers, such as air cylinders, etc., which implement active shock absorption on the second platform according to the motion (e.g., acceleration) of the second platform 12.

[0063] In some embodiments, the shock protection device further comprises a buffer limiting module 5 connected between the first platform 11 and the second platform 12. In some embodiments, the buffer limiting module 5 can be used to absorb the impact force in the first direction and / or the second direction parallel to the first platform 11 provided by the second platform 12 according to the motion of the second platform 12, for example, the impact force in the y-axis direction and / or the x-axis direction. Referring to Figure 2 As shown, the buffer limiting module 5 is used to absorb the impact force in the y-axis direction.

[0064] In some embodiments, the buffer limiting module 5 comprises a first fixing member 51 fixedly connected with the first platform 11, a buffer member 52 fixedly connected with the first fixing member 51, and a second fixing member 53 connected between the buffer member 52 and the second platform 12. The buffer member 52 extends in the first direction and / or the second direction, and is used to absorb the impact force in the first direction and / or the second direction parallel to the first platform 11 provided by the second platform 12, for example, the impact force in the y-axis direction and / or the x-axis direction.

[0065] In some embodiments, the buffer member 52 is suspended relative to the first platform 11 and can be compressed in one of the y-axis direction or the x-axis direction to achieve buffering. In some embodiments, in order to absorb the impact force in the y-axis direction, the buffer member 52 is arranged to extend in the y-axis direction. In other embodiments, in order to absorb the impact force in the x-axis direction, the buffer member 52 is arranged to extend in the x-axis direction. In other embodiments, the buffer member 52 can also be arranged to extend in a direction having an angle with the y-axis direction and the x-axis direction, so as to absorb the impact force in the y-axis direction and the x-axis direction. In addition, a plurality of buffer members 52 arranged in different directions can also be provided according to actual needs. In some embodiments, the buffer member 52 can be a rubber block, an elastic body, or an air bag, etc.

[0066] Referring to Figure 2As shown, in some embodiments, the first fixing member 51 can be a plate-shaped structure fixed vertically or substantially vertically to the upper surface of the first platform 11, and one end of the buffer member 52 is fixedly connected to the upper end of the plate-shaped structure. In some embodiments, the second fixing member 53 can be a block-shaped structure, and the other end of the buffer member 52 is fixedly connected to the side surface of the block-shaped structure, and the upper surface of the block-shaped structure is fixedly connected to the second platform 12. In some embodiments, the first fixing member 51, the buffer member 52, and the second fixing member 53 form an L shape.

[0067] In some embodiments, the shock absorber 2 and the buffer limiting module 5 can buffer the second platform 12 to prevent damage caused by always rigidly limiting the second platform 12. In some embodiments, the shock absorber 2 and the buffer limiting module 5 absorb part or all of the impact force of the second platform 12. The shock absorber 2 is the first level of protection, which performs vertical shock absorption and absorbs part or all of the impact force of the second platform 12. The buffer limiting module 5 is the second level of protection, which performs buffer limiting in the movement direction of the movement mechanism, and is a flexible limiting protection. In the case that the shock absorber 2 and the buffer limiting module 5 cannot absorb all the impact force, the safety locking module 3 works as the last level of limiting protection, which realizes the limiting protection in the vertical direction (i.e. the axial direction of the safety locking module 3) and the first direction and the second direction in the plane (i.e. the radial direction of the safety locking module 3), and is a rigid limiting. When the second platform 12 has a tendency to slip in the impact in the high-speed movement, the safety locking module 3 can also prevent the platform of the second platform 12 from falling.

[0068] Referring to Figures 1 to 11 As shown, one or more embodiments of the present specification provide a movement platform, which can keep the second platform carrying the movement mechanism stable during the movement of the movement mechanism, and further absorb or partially absorb the impact force of the second platform relative to the first platform in the x-axis direction, the y-axis direction, and / or the z-axis direction, realize the limitation of the displacement and rotation of the second platform relative to the first platform in the vertical direction and the two directions in the plane, and can adjust the range of the movement limit position, and can further selectively make the second platform have a fixed vertical distance relative to the first platform to adapt to transportation.

[0069] In one or more embodiments of the present specification, the movement platform comprises a first platform 11 and a second platform 12 and a shock protection device, and the shock protection device is arranged between the first platform 11 and the second platform 12.

[0070] In some embodiments, the motion platform further comprises a motion mechanism 62 moving along a second direction on the second platform 12, two counterweights 63 respectively arranged on two sides of the motion mechanism 62 along the first direction, a first linear driving device 64 mounted between the counterweights 63 and the motion mechanism 62, and a second linear driving device 65 mounted between the second platform 12 and the counterweights 63. In some embodiments, the first linear driving device 64 is configured to drive the motion mechanism 62 to move along the second direction, and the second linear driving device 65 is configured to drive the two counterweights 63 to move along the second direction, and the moving direction of the two counterweights 63 is opposite to the moving direction of the motion mechanism 62.

[0071] In some embodiments, the stator of the second linear driving device 65 is fixedly connected with the second platform 12, and the rotor of the second linear driving device 65 is fixedly connected with one side of the counterweight 63; the rotor of the first linear driving device 64 is fixedly connected with the other side of the counterweight 63, and the stator of the first linear driving device 64 is fixedly connected with the motion mechanism 62.

[0072] In some embodiments, the motion platform further comprises a linear guide device 61 arranged along the second direction, configured to guide the moving direction of the motion mechanism 62.

[0073] In some embodiments, the counterweights 63 move based on the motion of the motion mechanism 62, so as to keep the center of mass of the whole motion mechanism 62, the load of the motion mechanism 62 and the two counterweights 63 unchanged, and reduce the influence of the center of mass displacement caused by the motion of the motion mechanism 62 on the second platform 12. In some embodiments, the counterweights 63 can weaken the impact of the motion mechanism on the second platform 12 during high acceleration, so as to realize high acceleration and high precision of the motion mechanism. For example, when the motion mechanism 62 moves uniformly along the positive direction of the y-axis, the corresponding counterweight 63 moves uniformly along the negative direction of the y-axis, and the center of mass of the whole mechanism is kept unchanged. For example, when the motion mechanism 62 accelerates along the positive direction of the y-axis, the corresponding counterweight 63 accelerates along the negative direction of the y-axis, and the center of mass of the whole mechanism is kept unchanged.

[0074] In some embodiments, the balance mass 63 comprises a first block 631 connected to the first linear driving device 64 and a second block 632 connected to the second linear driving device 65. The first block 631 and the second block 632 are connected by one or more flexible connectors 633, which are used to achieve flexible connection between the first block 631 and the second block 632, so as to reduce the motion difference between the first block 631 and the second block 632 due to driving based on different linear driving devices, and thus reduce the impact or vibration caused by the motion difference on the second platform 12. In some embodiments, the flexible connectors 633 can be arranged to cope with the size deviation caused by manufacturing and assembly.

[0075] In some embodiments, as shown in Figure 10 , Figure 11 The flexible connectors 633 can be in the shape of a straight line or a C shape. In some embodiments, the number of flexible connectors 633 can be two or more. In some embodiments, the two flexible connectors 633 can include a flexible connector 633 in the shape of a straight line and a flexible connector 633 in the shape of a C. In some embodiments, the flexible connector 633 can include fixed portions 6331 at both ends thereof and a flexible portion 6332 connecting the two fixed portions 6331. The two fixed portions 6331 are fixedly connected to the first block 631 and the second block 632, respectively, and the flexible portion 6332 can be compressed in the direction of the first block 631 to the second block 632, and can also be bent, twisted, twisted, etc. in the direction intersecting the direction of the first block 631 to the second block 632, so as to achieve flexible connection between the first block 631 and the second block 632.

[0076] In some embodiments, the two fixed portions 6331 have a gap therebetween, and the flexible portion 6332 can be one or more spring pieces arranged in the gap.

[0077] In some embodiments, as shown in Figure 9 The motion platform further comprises a rigid limiting member 634 fixedly connected to one of the first block 631 and the second block 632 and capable of abutting against the other of the first block 631 and the second block 632. In some embodiments, since the first block 631 and the second block 632 are connected only by the flexible connectors 633 which are compressible and deformable, and the length of the flexible portion 6332 in the flexible connectors 633 is relatively short, the flexible portion 6332 is prone to folding and damage when being pressed by the two fixed portions 6331. Arranging the rigid limiting member 634 can limit the minimum position between the first block 631 and the second block 632, so as to avoid folding of the flexible portion 6332.

[0078] Having described the basic concepts, it is obvious that the above detailed disclosure is intended to be illustrative only and not restrictive of the scope of the present specification. Although not explicitly described, modifications, improvements, and alterations will occur to those skilled in the art upon reading the description. It is intended to include all such modifications, improvements, and alterations in so far as they come within the scope of the examples of the present specification.

Claims

1. A secure soldering module, characterized in that, The device comprises a top plate (31), a limiting rod (32), a base (33) and a locking limiting assembly (34); One end of the limiting rod (32) is fixedly connected with the top plate (31); The other end of the limiting rod (32) is movably arranged on the base (33); The locking limiting assembly (34) is sleeved outside the limiting rod (32) and is used for limiting the movement of the top plate (31) and / or the limiting rod (32) relative to the base (33).

2. The secure soldering module of claim 1, wherein, The locking limiting assembly (34) comprises an adjusting nut (341) and a locking fixing member (342); The adjusting nut (341) is sleeved outside the limiting rod (32) and can slide relative to the limiting rod (32); The locking fixing member (342) is fixedly connected with the base (33), and the locking fixing member (342) is sleeved outside the limiting rod (32) and the adjusting nut (341), and the adjusting nut (341) can move and fix relative to the locking fixing member (342).

3. The secure soldering module of claim 2, wherein, The locking limiting assembly (34) further comprises a buffer pad (343) arranged on the locking fixing member (342), and the top plate (31) can abut against the adjusting nut (341) and / or the buffer pad (343).

4. The secure soldering module of claim 2, wherein, The adjusting nut (341) has an adjusting nut boss (3410); The adjusting nut boss (3410) has a first limiting surface (41) facing the top plate (31), and the first limiting surface (41) is used for limiting the movement of the top plate (31) towards the base (33).

5. The secure soldering module of claim 4, wherein, The adjusting nut boss (3410) further has a second limiting surface (42) facing the locking fixing member (342), and the second limiting surface (42) is used for limiting the position of the adjusting nut boss (3410) relative to the locking fixing member (342).

6. The secure soldering module of claim 2, wherein, The other end of the limiting rod (32) has a limiting rod head (320), and the limiting rod head (320) has a third limiting surface (43) facing the locking fixing member (342), and the third limiting surface (43) is used for preventing the limiting rod (32) from being separated from the base (33); The limiting rod head (320) further has a fourth limiting surface (44) facing the base (33), and the fourth limiting surface (44) is used for limiting the movement of the top plate (31) towards the base (33).

7. The secure soldering module of claim 2, wherein, The other end of the limiting rod (32) has a limiting rod head (320), and the base (33) is provided with a limiting rod groove for accommodating the limiting rod head (320), and a gap is formed between the outer periphery of the limiting rod head (320) and the side wall of the limiting rod groove, and a gap is also formed between the outer periphery of the limiting rod (32) and the inner wall of the adjusting nut (341).

8. The secure soldering module of claim 4, wherein, The locking limiting assembly (34) further comprises a buffer pad (343), the top plate (31) can abut at least one of the first limiting surface (41) and the buffer pad (343), the thickness of the buffer pad (343) is greater than the thickness of the adjusting nut boss (3410).

9. A shock absorbing guard characterized by The shock protection device is arranged between the first platform (11) and the second platform (12), and the second platform (12) is located above the first platform (11); the shock protection device comprises a shock absorber (2) and the safety locking module according to any one of claims 1 to 8. The shock absorber (2) and the safety locking module are connected between the first platform (11) and the second platform (12).

10. The shock absorbing guard of claim 9, wherein, Further comprising: A buffer limiting module (5) connected between the first platform (11) and the second platform (12); The buffer limiting module (5) is used for absorbing impact force provided by the second platform (12) in a first direction and / or a second direction parallel to the first platform (11).

11. The shock absorbing guard of claim 10, wherein, The buffer limiting module (5) comprises: A first fixing member (51) fixedly connected with the first platform (11); A buffer member (52) fixedly connected with the first fixing member (51), the buffer member (52) extends in the first direction and / or the second direction, and the buffer member (52) is used for absorbing impact force provided by the second platform (12) in the first direction and / or the second direction parallel to the first platform (11); and A second fixing member (53) connected between the buffer member (52) and the second platform (12).

12. The shock absorbing guard of claim 9, wherein, The shock absorber (2) is used for absorbing impact force provided by the second platform (12) in a third direction perpendicular to the first platform (11).

13. A motion platform characterized by, Comprising: A first platform (11) and a second platform (12) and the shock protection device according to any one of claims 9 to 12, the shock protection device is arranged between the first platform (11) and the second platform (12).

14. The motion platform of claim 13, wherein, The motion platform further comprises: A motion mechanism (62) moving in a second direction on the second platform (12); Two balance masses (63) respectively arranged on two sides of the motion mechanism (62) in a first direction; A first linear driving device (64) mounted between the balance mass (63) and the motion mechanism (62), the first linear driving device (64) is used for driving the motion mechanism (62) to move in the second direction; A second linear driving device (65) mounted between the second platform (12) and the balance mass (63), the second linear driving device (65) is used for driving the two balance masses (63) to move in the second direction, and the moving directions of the two balance masses (63) are opposite to the moving direction of the motion mechanism (62).

15. The motion platform of claim 14, wherein, The balance mass (63) comprises a first block (631) and a second block (632), the first block (631) is connected to the first linear driving device (64), and the second block (632) is connected to the second linear driving device (65). The first block (631) and the second block (632) are connected through one or more flexible connecting pieces (633).

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