Lifting device and three-axis motion platform

Abstract

The utility model relates to the field of precision manufacturing, in particular to a lifting device and a three-axis motion platform. The lifting device comprises a base and a lifting table which are arranged in parallel at an interval; one end of the first supporting piece is hinged to the base, and the other end of the first supporting piece is hinged to the lifting table in a sliding mode; one end of the second supporting piece is slidably hinged to the base, and the other end is hinged to the lifting table. According to the lifting device, the first supporting piece is hinged to the lifting table in the sliding mode, the second supporting piece is hinged to the lifting table, in the lifting process, the distance between two supporting points formed by the first supporting piece and the second supporting piece on the lifting table is changed along with the lifting height, the higher the lifting height is, the smaller the distance between the two supporting points is, and the higher the lifting height is, the smaller the distance between the two supporting points is. Deflection of the lifting platform in a lifting state is reduced, and then the bending degree of the top face of the lifting platform to a borne object is reduced.

Description

Technical Field

[0001] The utility model relates to the field of precision manufacturing, in particular to a lifting device and a three-axis motion platform. Background Art

[0002] In the field of precision manufacturing, a lifting platform is required to transport or lift the load. The spacing between the support points of the existing lifting platform is relatively large. The weight of the lifting platform itself plus the weight of the load will cause a relatively large deflection in the middle of the lifting platform. This deflection will cause the load to bend, making it difficult to meet the needs of precision manufacturing. Utility Model Content

[0003] The utility model aims to overcome the problem in the background technology that the spacing between the support points of the lifting platform is too large, resulting in relatively large deflection, and provides a lifting device and a three-axis motion platform.

[0004] In a first aspect, the utility model provides a lifting device, comprising:

[0005] Base and lifting platform arranged in parallel and spaced relation;

[0006] The first support and the second support arranged crosswise and hinged in the middle:

[0007] One end of the first support member is hinged to the base, and the other end is slidably hinged to the lifting platform;

[0008] One end of the second supporting member is slidably hinged to the base, and the other end is hinged to the lifting platform.

[0009] The present application provides a lifting device, wherein a first support member and a second support member are cross-arranged and hinged between a base and a lifting platform, one end of the first support member is hinged to the base, and one end of the second support member is hinged to the lifting platform. When in use, the sliding hinged end of the first support member or the second support member can be pushed to make the first support member and the second support member rotate toward or in the opposite direction, thereby changing the distance between the base and the lifting platform and realizing the lifting or lowering of the lifting platform relative to the base; moreover, the first support member and the second support member are hinged in the middle part, and the first support member and the second support member rotate toward or in the opposite direction, which can push the lifting platform to rise or fall smoothly relative to the base, which is conducive to reducing or avoiding bumps, shaking and tilting.

[0010] The first support member is slidingly hinged to the lifting platform, and the second support member is hinged to the lifting platform. During the lifting process, the distance between the two support points formed by the first support member and the second support member on the lifting platform changes with the lifting height. The higher the lifting height, the smaller the distance between the two support points, which is beneficial to reducing the deflection of the lifting platform in the lifting state, and thereby reducing the degree of bending of the top surface of the lifting platform to the load.

[0011] Preferably, it includes a driving mechanism which can push the sliding hinge end of the second support member closer to or away from the hinge end of the first support member.

[0012] The driving mechanism can be installed on the base and control the lifting of the lifting platform by pushing and pulling the sliding hinge end of the second support member.

[0013] The sliding hinge end of the second support member is the end of the second support member for sliding hinge connection with the base; the hinge end of the first support member is the end of the first support member for hinge connection with the base.

[0014] Preferably, the sliding hinge end of the first support member is hinged to the first slider, and the first slider abuts against the lifting platform and can slide relative to the surface of the lifting platform.

[0015] Preferably, the sliding hinge end of the second support member is hinged to the second slider, and the second slider abuts against the base and can slide relative to the surface of the base.

[0016] Lubricating oil can be applied between the first slider and the surface of the lifting platform for lubrication, and lubricating oil can be applied between the second slider and the surface of the base for lubrication.

[0017] Preferably, the first support member includes two first support arms arranged side by side and connected to each other, and the two first support arms are hinged to the first slider; the second support member includes two second support arms arranged side by side and connected to each other, and the two second support arms are hinged to the second slider; the first support arm and the second support arm can overlap each other.

[0018] The two support arms support the slider, which can improve the stability of the slider and reduce the probability of the slider tilting.

[0019] Preferably, the first support arm includes a first middle block, the second support arm includes a second middle block, and the first middle block and the second middle block are hinged to each other;

[0020] The two ends of the first middle block are connected with a first side block and a second side block which are offset from each other, the two ends of the second middle block are connected with a third side block and a fourth side block which are offset from each other, the end of the second side block far from the first middle block deflects towards the side of the second middle block, and the end of the third side block far from the second middle block deflects towards the side of the first middle block; so that the first side block can be in contact with the third side block, and the second side block can be in contact with the fourth side block.

[0021] Preferably, a first limiting plate is arranged on the lifting platform, the first limiting plate is spaced from the lifting platform, and the first slider is located between the first limiting plate and the lifting platform.

[0022] Preferably, a second limiting plate is arranged on the base, the second limiting plate is spaced from the base, and the second slider is located between the second limiting plate and the base.

[0023] The limiting plate can limit the slider to prevent the slider from detaching from the surface of the lifting platform during movement, which may cause bumps or tilts of the lifting platform.

[0024] Preferably, two spaced-apart first stoppers are connected between the first limiting plate and the lifting platform, and the first slider can slide between the two first stoppers.

[0025] Preferably, two spaced-apart second stoppers are connected between the second limiting plate and the base, and the second slider can slide between the two second stoppers.

[0026] The stoppers can be used to limit the sliding range of the slider.

[0027] Preferably, the driving mechanism includes a lead screw and a rotating motor. The second slider is sleeved on the lead screw; the rotating motor can drive the lead screw to rotate and drive the second slider to approach or move away from the hinged end of the first support member.

[0028] The rotating motor can be a stepper motor or a servo motor; by the rotating motor and the lead screw, the sliding distance of the second slider can be accurately controlled, thereby controlling the lifting height of the lifting platform.

[0029] In a second aspect, the present utility model provides a three-axis motion platform, including a first linear motion device, a second linear motion device, and the lifting device as described above, wherein: the first linear motion device can drive the second linear motion device to move along a first direction, the second linear motion device can drive the lifting device to move along a second direction, and the lifting platform can move along a third direction; the first direction, the second direction, and the third direction are perpendicular to each other.

[0030] The three-axis motion platform provided by the present application can achieve three-axis motion to transport the load to the target position.

[0031] Preferably, the first linear motion device is a first linear motion module, and the second linear motion device is a second linear motion module; the second linear motion module is installed on the first linear motion module, and the lifting device is installed on the second linear motion module.

[0032] Compared with the prior art, the beneficial effects of the present utility model:

[0033] 1. A lifting device provided by the present application has a first support member and a second support member that are cross - arranged and hinged between a base and a lifting platform. One end of the first support member is hinged to the base, and one end of the second support member is hinged to the lifting platform. During use, by pushing the sliding hinge end of the first support member or the second support member, the first support member and the second support member can rotate towards or away from each other, thereby changing the distance between the base and the lifting platform and realizing the rise or fall of the lifting platform relative to the base. Moreover, the middle parts of the first support member and the second support member are hinged. When the first support member and the second support member rotate towards or away from each other, they can push the lifting platform to rise or fall smoothly relative to the base, which is beneficial to reducing or avoiding bumps, shakes, and tilts. The first support member is slidably hinged to the lifting platform, and the second support member is hinged to the lifting platform. During the lifting process, the distance between the two support points formed by the first support member and the second support member on the lifting platform changes with the lifting height. The higher the lifting height, the smaller the distance between the two support points, which is beneficial to reducing the deflection of the lifting platform in the lifted state and further reducing the bending degree of the top surface of the lifting platform on the load.

[0034] 2. A three - axis motion platform provided by the present application can achieve three - axis motion to transport a load to a target position. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 Front view of the lifting device described in the present application Figure 1 ;

[0036] Figure 2 Front view of the lifting device described in the present application Figure 2 ;

[0037] Figure 3 Structural schematic diagram of the lifting device described in the present application Figure 1 ;

[0038] Figure 4 Structural schematic diagram of the lifting device described in the present application Figure 2 ;

[0039] Figure 5 Structural schematic diagram of the lifting device described in the present application Figure 3 ;

[0040] Figure 6 Front view of the lifting device described in the present application Figure 3 ;

[0041] Figure 7 Structural schematic diagram of the three - axis motion platform described in the present application Figure 1 ;

[0042] Figure 8 Structural schematic diagram of the three - axis motion platform described in the present application Figure 2 ;

[0043] Figure 9 Structural schematic diagram of the first support member and the second support member described in this application;

[0044] Figure 10 Structural schematic diagram of the first support arm described in this application;

[0045] Figure 11 Structural schematic diagram of the second support arm described in this application.

[0046] Markings in the figure:

[0047] 1 - Base;

[0048] 11 - First support member;

[0049] 111 - First slider; 112 - First support arm; 113 - First limit plate; 114 - First stop block; 115 - First middle block; 116 - First side block; 117 - Second side block; 118 - Cross arm;

[0050] 12 - Second support member;

[0051] 121 - Second slider; 122 - Second support arm; 123 - Second limit plate; 124 - Second stop block; 125 - Second middle block; 126 - Third side block; 127 - Fourth side block;

[0052] 13 - Driving mechanism;

[0053] 131 - Lead screw; 132 - Rotating motor;

[0054] 2 - Lifting platform;

[0055] 3 - First linear motion device;

[0056] 4 - Second linear motion device. Specific embodiments

[0057] The following further describes the present utility model in detail with reference to specific embodiments. However, this should not be construed as limiting the scope of the above-mentioned subject matter of the present utility model to the following embodiments. All technologies implemented based on the content of the present utility model fall within the scope of the present utility model.

[0058] Unless otherwise specified, in the description of the specific embodiments of the present utility model, the expression terms indicating the orientation or positional relationship such as "upper", "lower", "left", "right", "center", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product / device / equipment of the present utility model is commonly used. These terms of orientation or positional relationship are only for the convenience of describing the solution of the present utility model or simplifying the description in the specific embodiments, so as to facilitate technicians to quickly understand the solution, rather than indicating or implying that a specific device / component / element must have a specific orientation or be constructed and operated in a specific positional relationship. Therefore, it should not be construed as a limitation to the present utility model.

[0059] In addition, when terms such as "horizontal", "vertical", "hanging", "parallel", etc. appear, it does not mean that the corresponding device / component / element is required to be absolutely horizontal or vertical or hanging or parallel, but it can be slightly inclined or have a deviation. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and it does not mean that the structure must be completely horizontal, but it can be slightly inclined. Or, it can be simply understood that the corresponding device / component / element is arranged in the directions of "horizontal", "vertical", "hanging", "parallel", etc., and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the solution of the present utility model.

[0060] In addition, when expressions such as "first", "second", "third", etc. appear in the terms, they are only used to distinguish the description of the same or similar components, and should not be construed as emphasizing or implying the relative importance of a specific component.

[0061] In addition, in the description of the embodiments of the present utility model, "several", "multiple", "a plurality of" represent at least 2. It can be any situation such as 2, 3, 4, 5, 6, 7, 8, 9, etc., and even can be a situation exceeding 9.

[0062] In addition, in the description of the technical solution of the present utility model, unless otherwise clearly specified / defined / limited, where terms such as "set", "installed", "connected", "connected", "provided with", "laid", "arranged" appear, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be connection means commonly used in the art such as welding, riveting, bolting, threaded connection, etc. This connection can be a mechanical connection, an electrical connection or a communication connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components.

[0063] Example 1

[0064] As Figures 1-6 shown, a lifting device provided in this embodiment includes a base 1, a lifting platform 2, a first support member 11, and a second support member 12, where: The base 1 and the lifting platform 2 are arranged in parallel at an interval. The first support member 11 and the second support member 12 are arranged crosswise and hinged in the middle. One end of the first support member 11 is hinged to the base 1, and the other end is slidably hinged to the lifting platform 2. One end of the second support member 12 is slidably hinged to the base 1, and the other end is hinged to the lifting platform 2.

[0065] The lifting platform 2 is preferably a flat plate, but can also be designed into a curved plate, a block, a frame and other structures according to needs. The base 1 and the lifting platform 2 are arranged opposite to each other, and the opposite surfaces of the two are preferably planes, and the two planes are preferably parallel to each other.

[0066] The middle parts of the first support member 11 and the second support member 12 are hinged to form a structure similar to "X". The lower ends of the first support member 11 and the second support member 12 are connected to the base 1, and the upper ends are connected to the lifting platform 2. By rotating the first support member 11 and the second support member 12 around the middle hinge point towards or away from each other, the distance between the upper end of the first support member 11 and the lower end of the second support member 12 can be changed.

[0067] It can be understood that the upper end and the lower end are relative descriptions of the two ends of the support member in a partial use state for the convenience of describing the solution. In this type of use state, the lifting platform 2 is located above the base 1. In some other use conditions, the lifting platform 2 is located below or on the side of the base 1. At this time, the upper end and the lower end do not strictly follow the "up and down" relationship.

[0068] One end of the first support member 11 is hinged to the base 1. An articulated seat can be provided on the base 1 so that the end of the first support member 11 is hinged to the articulated seat. The other end of the first support member 11 is slidably hinged to the lifting platform 2. The slidable hinge allows this end to slide and rotate relative to the lifting platform 2. One way of setting the slidable hinge is: A strip-shaped groove is provided on the lifting platform 2, and a sliding member capable of sliding along the strip-shaped groove is provided in the strip-shaped groove. The end of the first support member 11 is hinged to the sliding member, and the slidable hinge between the end of the first support member 11 and the lifting platform 2 can be realized.

[0069] One end of the second support member 12 is hinged to the lifting platform 2, and a hinge seat can be arranged on the lifting platform 2; the other end of the second support member 12 is slidably hinged to the base 1, and a connection method similar to that of the first support member 11 can be adopted. It can be understood that both the first support member 11 and the second support member 12 are structured with one end hinged and the other end slidably hinged. Under the condition of ensuring sufficient support and restraint, by pushing the first support member 11 and the second support member 12 to rotate towards or away from each other around the middle hinge point, the distance between the lifting platform 2 and the base 1 can be changed, realizing the rise and fall of the lifting platform 2 relative to the base 1.

[0070] It can be understood that by adjusting the lengths of the first support member 11 and the second support member 12, or changing the positions of the middle hinge points on the first support member 11 and the second support member 12, the opposite faces of the base 1 and the lifting platform 2 can be made parallel to each other; and, when subsequently pushing the first support member 11 and the second support member 12 to rotate towards or away from each other around the middle hinge point, the opposite faces of the base 1 and the lifting platform 2 can remain parallel, realizing the smooth rise or fall of the lifting platform 2, which is beneficial to reducing or avoiding bumps, shakes or tilts.

[0071] Preferably, the first support member 11 and the second support member 12 are of equal length, and the middle hinge point is located at the midpoints of the first support member 11 and the second support member 12.

[0072] In addition, for the lifting platform 2, it is subject to the supporting forces from the first support member 11 and the second support member 12, and the acting points of the supporting forces are located at the slidable hinge end of the first support member 11 and the hinge end of the second support member 12; in some usage conditions, the lifting platform 2 can be simplified to two-point support, and the distance between the two support points (i.e., the distance between the slidable hinge end of the first support member 11 and the hinge end of the second support member 12) changes with the lifting height of the lifting platform 2. The higher the lifting height, the smaller the distance between the support points, and the lower the lifting height, the larger the distance between the support points; those skilled in the art can understand that by shortening the distance between the two support points within a reasonable range, the deflection of the lifting platform 2 can be reduced, thereby reducing the bending degree of the load carried on the lifting platform 2.

[0073] For this embodiment, the slidable hinge end of the first support member 11 is the end of the first support member 11 for slidably hinging to the lifting platform 2; the hinge end of the first support member 11 is the end of the first support member 11 for hinging to the base 1; similarly, it can be known that: the slidable hinge end of the second support member 12 is the end of the second support member 12 for slidably hinging to the base 1; the hinge end of the second support member 12 is the end of the second support member 12 for hinging to the lifting platform 2.

[0074] Take a specific structure as an example: the hinged end of the second support member 12 is located at one end of the lifting platform 2, and the sliding range of the sliding hinged end of the first support member 11 is: from the other end of the lifting platform 2 to the middle of the lifting platform 2; at this time, as the lifting platform 2 is lifted, the two support points gradually get closer, and the maximum deflection of the lifting platform 2 gradually decreases.

[0075] In summary, the present application provides a lifting device, wherein a first support member 11 and a second support member 12 are cross-arranged and hingedly connected between a base 1 and a lifting platform 2, one end of the first support member 11 is hinged to the base 1, and one end of the second support member 12 is hinged to the lifting platform 2. When in use, the first support member 11 and the second support member 12 can be pushed to rotate toward or in the opposite direction by sliding the hinged end of the first support member 11 or the second support member 12, thereby changing the distance between the base 1 and the lifting platform 2 and realizing the ascent or descent of the lifting platform 2 relative to the base 1; moreover, the first support member 11 and the second support member 12 are hinged in the middle part, and when the first support member 11 and the second support member 12 rotate toward or in the opposite direction, the lifting platform 2 can be pushed to rise or fall smoothly relative to the base 1, which is conducive to reducing or avoiding bumps, shaking and tilting.

[0076] The first support member 11 is slidingly hinged to the lifting platform 2, and the second support member 12 is hinged to the lifting platform 2. During the lifting process, the distance between the two support points formed by the first support member 11 and the second support member 12 on the lifting platform 2 changes with the lifting height. The higher the lifting height, the smaller the distance between the two support points, which is conducive to reducing the deflection of the lifting platform 2 in the lifting state, and thereby reducing the degree of bending of the top surface of the lifting platform to the load.

[0077] Preferably, the lifting device further comprises a driving mechanism 13 , and the driving mechanism 13 is capable of pushing the sliding hinged end of the second support member 12 to approach or move away from the hinged end of the first support member 11 .

[0078] The driving mechanism 13 can be installed on the base 1, and the driving mechanism 13 can control the lifting and lowering of the lifting platform 2 by pushing and pulling the sliding hinge end of the second support member 12. When the sliding hinge end of the second support member 12 moves close to the hinge end of the first support member 11, the lifting platform 2 rises; otherwise, the lifting platform 2 descends.

[0079] In one or more preferred embodiments, the sliding hinged end of the first support member 11 is provided with a first arc surface, the first arc surface abuts against the lifting platform 2 , and the sliding hinged end of the first support member 11 can slide and roll relative to the surface of the lifting platform 2 .

[0080] The lifting platform 2 can be directly overlapped on the sliding hinged end of the first support member 11. At this time, the sliding hinged end of the first support member 11 can slide and roll relative to the surface of the lifting platform 2. The rolling effect is similar to the rotation of the first support member 11 relative to the lifting platform 2, thereby achieving the effect of sliding hinge.

[0081] To keep the lifting platform 2 stable during the lifting process, an arc chamfer can be provided at the sliding hinge end of the first support member 11 to form a first arc surface. The first arc surface abuts against the lifting platform 2, which can avoid the jolting of the lifting platform 2 caused by the corner structure. Moreover, by reasonably designing the arc of the first arc surface, the lifting platform 2 can rise and fall parallel to the base 1.

[0082] Similarly, a second arc surface can be provided at the sliding hinge end of the second support member 12. The second arc surface abuts against the base 1, and the sliding hinge end of the second support member 12 can slide and roll relative to the surface of the base 1.

[0083] In one or several preferred embodiments, the sliding hinge end of the first support member 11 is hinged to the first slider 111. The first slider 111 abuts against the lifting platform 2 and can slide relative to the surface of the lifting platform 2.

[0084] As Figures 1-3 shown, the first slider 111 has a relatively flat contact surface. This contact surface can abut against the surface of the lifting platform 2 and slide along the surface of the lifting platform 2. The sliding hinge end of the first support member 11 is hinged to the first slider 111, and thus the sliding hinge function of the first support member 11 relative to the lifting platform 2 can be realized. To enable the sliding to proceed smoothly and to reduce the sliding resistance, lubricating oil can be applied between the first slider 111 and the surface of the lifting platform 2 for lubrication.

[0085] Similarly, the sliding hinge end of the second support member 12 can be hinged to the second slider 121. The second slider 121 abuts against the base 1 and can slide relative to the surface of the base 1; lubricating oil can be applied between the second slider 121 and the surface of the base 1 for lubrication.

[0086] To restrict the sliding range of the first slider 111, strip-shaped grooves can be provided on the surface of the lifting platform 2. The first slider 111 is placed in the strip-shaped grooves and can slide along the length direction of the strip-shaped grooves.

[0087] To prevent the first slider 111 from detaching from the surface of the lifting platform 2 during the movement process, which may cause the lifting platform 2 to jolt, shake or tilt, a first limiting plate 113 can be provided on one side of the lifting platform 2 close to the base 1. The first limiting plate 113 is spaced from the surface of the lifting platform 2, and the distance between the two is slightly greater than the thickness of the first slider 111, so that when the first slider 111 slides between the first limiting plate 113 and the lifting platform 2, it will not detach from the surface of the lifting platform 2.

[0088] Preferably, the first support member 11 includes two first support arms 112 arranged side by side and connected. The two first support arms 112 are hinged to the first slider 111; the second support member 12 includes two second support arms 122 arranged side by side and connected. The two second support arms 122 are hinged to the second slider 121.

[0089] As Figures 9-11 shown, the two first support arms 112 arranged side by side can be hinged to both ends of the first slider 111, increasing the constraint on the first slider 111 and reducing the probability of the first slider 111 tilting and sliding; the two first support arms 112 can be connected by a cross arm 118 so that the two first support arms 112 can move synchronously; the same applies to the second support arm 122.

[0090] Similarly: a strip-shaped groove can be provided on the surface of the base 1, and the second slider 121 can be placed in the strip-shaped groove and can slide along the length direction of the strip-shaped groove; a second limit plate 123 spaced from the base 1 can be provided on one side of the base 1 close to the lifting platform 2.

[0091] Further preferably, when the lifting platform 2 is in the low position, the first support arm 112 and the second support arm 122 can overlap each other. The overlapping can be used to improve the position stability of the first support arm 112 and the second support arm 122 and maintain the low position height stability of the lifting platform 2.

[0092] For the convenience of the first support arm 112 and the second support arm 122 to overlap each other, preferably, the first support arm 112 includes a first middle block 115, the second support arm 122 includes a second middle block 125, and the first middle block 115 and the second middle block 125 are hinged to each other; two mutually offset first side blocks 116 and second side blocks 117 are connected to both ends of the first middle block 115, and two mutually offset third side blocks 126 and fourth side blocks 127 are connected to both ends of the second middle block 125; the end of the second side block 117 away from the first middle block 115 deflects towards the second middle block 125, and the end of the third side block 126 away from the second middle block 125 deflects towards the first middle block 115; so that the first side block 116 can be in contact with the third side block 126, and the second side block 117 can be in contact with the fourth side block 127.

[0093] The first support arm 112 and the second support arm 122 can form a shape similar to Figure 6 shown, wherein the first support arm 112 includes a first middle block 115 and first side blocks 116 and second side blocks 117 connected to both ends of the first middle block 115, and the first side blocks 116 and the second side blocks 117 are mutually offset to leave a overlapping position for the third side block 126 and the fourth side block 127. Correspondingly, the second support arm 122 includes a second middle block 125 and third side blocks 126 and fourth side blocks 127 located at both ends of the second middle block 125, and the third side blocks 126 and the fourth side blocks 127 are mutually offset to leave a overlapping position for the first side block 116 and the second side block 117.

[0094] One of the first side block 116 and the second side block 117 deflects the end away from the first middle block 115 towards the second middle block 125, so that the deflected part can overlap on the third side block 126 or the fourth side block 127 of the second support arm 122; correspondingly, one of the third side block 126 and the fourth side block 127 deflects the end away from the second middle block 125 towards the first middle block 115 to overlap on the first side block 116 or the second side block 117.

[0095] For this embodiment, the second side block 117 deflects and overlaps on the fourth side block 127, and the third side block 126 deflects and overlaps on the first side block 116; in this way, when the lifting platform 2 is in the low position, its height can be maintained stable due to the mutual overlap of the first support arm 112 and the second support arm 122, which is beneficial to maintaining the use accuracy of the device.

[0096] Preferably, two spaced first stoppers 114 are connected between the first limiting plate 113 and the lifting platform 2, and the first slider 111 can slide between the two first stoppers 114.

[0097] The first stopper 114 can be arranged along the sliding direction of the first slider 111 to limit the sliding range of the first slider 111.

[0098] If the first limiting plate 113 is provided, the first stopper 114 can also be used to connect the first limiting plate 113 and the lifting platform 2.

[0099] Similarly, two spaced second stoppers 124 can be provided between the second limiting plate 123 and the base 1, and the second slider 121 can slide between the two second stoppers 124.

[0100] Preferably, the driving mechanism 13 includes a lead screw 131 and a rotating motor 132, and the second slider 121 is sleeved on the lead screw 131; the rotating motor 132 can drive the lead screw 131 to rotate and drive the second slider 121 to approach or move away from the hinged end of the first support 11.

[0101] The rotating motor 132 can be a stepper motor or a servo motor; through the rotating motor 132 and the lead screw 131, the sliding distance of the second slider 121 can be controlled more precisely, so as to control the lifting height of the lifting platform 2.

[0102] The lead screw 131 and the second slider 121 can form a ball screw mechanism 131.

[0103] Embodiment 2

[0104] As Figure 7 、 8As shown in the figure, a three-axis motion platform provided in this embodiment includes a first linear motion device 3, a second linear motion device 4, and a lifting device described in Embodiment 1, where: the first linear motion device 3 can drive the second linear motion device 4 to move in a first direction, the second linear motion device 4 can drive the lifting device to move in a second direction, and the lifting platform 2 can move in a third direction; the first direction, the second direction, and the third direction are perpendicular to each other.

[0105] A three-axis motion platform provided in this application can achieve three-axis motion to transport a load to a target position.

[0106] Taking a certain usage mode as an example: the first direction and the second direction can be two mutually perpendicular directions in a horizontal plane, and the third direction can be a vertical direction. Through three-axis motion, the load can be accurately transported to any position within a certain range, and the transportation accuracy is high, which is applicable to the field of precision manufacturing.

[0107] Preferably, the first linear motion device 3 is a first linear motion module, and the second linear motion device 4 is a second linear motion module; the second linear motion module is installed on the first linear motion module, and the lifting device is installed on the second linear motion module.

[0108] The first linear motion module and the second linear motion module can be selected as KLS linear motion modules.

[0109] The motor for driving the linear motion module can be selected as a KVM stepping motor.

[0110] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A lifting device, characterized in that, Comprising: A base (1) and a lifting platform (2) arranged at parallel intervals; A first support member (11) and a second support member (12) which are cross - arranged and hinged in the middle: One end of the first support member (11) is hinged to the base (1), and the other end is slidably hinged to the lifting platform (2); One end of the second support member (12) is slidably hinged to the base (1), and the other end is hinged to the lifting platform (2).

2. The lifting device according to claim 1, wherein, Comprising a driving mechanism (13), the driving mechanism (13) being capable of pushing the slidably hinged end of the second support member (12) closer to or farther away from the hinged end of the first support member (11).

3. The lifting device according to claim 2, characterized in that: The slidably hinged end of the first support member (11) is hinged to a first slider (111), the first slider (111) abuts against the lifting platform (2) and can slide relative to the surface of the lifting platform (2); And / or, The slidably hinged end of the second support member (12) is hinged to a second slider (121), the second slider (121) abuts against the base (1) and can slide relative to the surface of the base (1).

4. The lifting device according to claim 3, characterized in that, The first support member (11) comprises two first support arms (112) arranged side by side and connected, the two first support arms (112) being hinged to the first slider (111); the second support member (12) comprises two second support arms (122) arranged side by side and connected, the two second support arms (122) being hinged to the second slider (121); The first support arm (112) and the second support arm (122) can overlap each other.

5. The lifting device according to claim 4, wherein, The first support arm (112) comprises a first middle block (115), the second support arm (122) comprises a second middle block (125), the first middle block (115) and the second middle block (125) are hinged to each other; Two mutually offset first side blocks (116) and second side blocks (117) are connected to both ends of the first middle block (115), two mutually offset third side blocks (126) and fourth side blocks (127) are connected to both ends of the second middle block (125), the end of the second side block (117) far from the first middle block (115) deflects towards the side of the second middle block (125), and the end of the third side block (126) far from the second middle block (125) deflects towards the side of the first middle block (115); so that the first side block (116) can be in contact with the third side block (126), and the second side block (117) can be in contact with the fourth side block (127).

6. The lifting device according to claim 3, characterized in that: A first limiting plate (113) is arranged on the lifting platform (2), the first limiting plate (113) is spaced from the lifting platform (2), and the first slider (111) is located between the first limiting plate (113) and the lifting platform (2); And / or, A second limiting plate (123) is provided on the base (1). The second limiting plate (123) is spaced from the base (1), and the second slider (121) is located between the second limiting plate (123) and the base (1).

7. The lifting device according to claim 6, wherein: Two spaced first stoppers (114) are connected between the first limiting plate (113) and the lifting table (2), and the first slider (111) can slide between the two first stoppers (114); and / or Two spaced second stoppers (124) are connected between the second limiting plate (123) and the base (1), and the second slider (121) can slide between the two second stoppers (124).

8. The lifting device according to claim 3, characterized in that, The driving mechanism (13) includes a lead screw (131) and a rotating motor (132), and the second slider (121) is sleeved on the lead screw (131); The rotating motor (132) can drive the lead screw (131) to rotate and drive the second slider (121) to approach or move away from the hinged end of the first support member (11).

9. A three-axis motion platform, characterized in that, It includes a first linear motion device (3), a second linear motion device (4), and the lifting device according to any one of claims 1-8, wherein: the first linear motion device (3) can drive the second linear motion device (4) to move in a first direction, the second linear motion device (4) can drive the lifting device to move in a second direction, and the lifting table (2) can move in a third direction; the first direction, the second direction, and the third direction are perpendicular to each other.

10. The three-axis motion platform according to claim 9, wherein, The first linear motion device (3) is a first linear motion module, and the second linear motion device (4) is a second linear motion module; the second linear motion module is installed on the first linear motion module, and the lifting device is installed on the second linear motion module.

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