CN220201277U - High-precision lifting device - Google Patents

Abstract

The utility model relates to the technical field of lifting equipment, in particular to a high-precision lifting device, which comprises: the device comprises a direct-drive driving device, a base, a screw rod transmission assembly, an oblique sliding assembly and a lifting mechanism; the screw rod transmission assembly, the oblique sliding assembly and the lifting mechanism are respectively arranged on the base, and the lifting mechanism is arranged above the oblique sliding assembly; the direct-drive driving device is in transmission connection with the screw rod transmission assembly, and the screw rod transmission assembly is in transmission connection with the oblique sliding assembly; under the drive action of the direct-drive type driving device, the screw rod transmission assembly can drive the inclined sliding assembly to reciprocate relative to the base and the lifting mechanism, and further drive the lifting mechanism to reciprocate relative to the base along the lifting direction. The accurate location of load object lift is adjusted can be realized to this application, and the load bearing capacity and the delivery stability of hoisting device simultaneously.

Description

High-precision lifting device

Technical Field

The utility model relates to the technical field of lifting equipment, in particular to a high-precision lifting device.

Background

The lifting device can be applied to the field of optical alignment, is an electric device for realizing the accurate adjustment of the position of a load object through automatic lifting movement, and a conventional electric lifting mechanism mainly adopts a stepping motor and a scissor type structure for transmission, but the structure has serious position loss in the transmission process, has poor positioning performance, cannot bear high load due to the poor rigidity of a scissor type structure, is limited in application scene and affects carrying stability. Accordingly, there is a need to provide an improved lifting device that addresses the above-mentioned existing problems.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a high-precision lifting device which can realize the precise positioning adjustment of the lifting of a load object and improve the load bearing capacity and the carrying stability of the device.

The utility model provides a high-precision lifting device, which comprises a direct-drive driving device, a base, a screw rod transmission assembly, an oblique sliding assembly and a lifting mechanism, wherein the base is provided with a first lifting mechanism and a second lifting mechanism;

the screw rod transmission assembly, the oblique sliding assembly and the lifting mechanism are respectively arranged on the base, and the lifting mechanism is arranged above the oblique sliding assembly;

the direct-drive driving device is in transmission connection with the screw rod transmission assembly, and the screw rod transmission assembly is in transmission connection with the oblique sliding assembly;

under the drive action of the direct-drive type driving device, the screw rod transmission assembly can drive the inclined sliding assembly to reciprocate relative to the base and the lifting mechanism, and further drive the lifting mechanism to reciprocate relative to the base along the lifting direction.

Specifically, the lifting mechanism is in sliding connection with the base along the lifting direction, and the oblique sliding component is in sliding connection with the base along the horizontal direction; the lifting mechanism is in sliding connection with the oblique sliding component.

Specifically, the lifting mechanism is provided with a first wedge block, the inclined sliding assembly is provided with a second wedge block, and the wedge inclined plane of the first wedge block is relatively parallel to the wedge inclined plane of the second wedge block.

Specifically, the included angle between the wedge-shaped inclined surface of the first wedge-shaped block and the horizontal direction is 25-45 degrees.

Specifically, the lifting mechanism and the base are alternatively provided with a lifting guide rail, the other one is provided with a first sliding block matched with the lifting guide rail, and the lifting mechanism and the base are in sliding connection along the lifting direction through the lifting guide rail and the first sliding block.

Specifically, a horizontal guide rail is alternatively arranged on the base and the inclined sliding component, a second sliding block matched with the horizontal guide rail is arranged on the other inclined sliding component, and the inclined sliding component is connected with the base in a sliding mode along the horizontal direction through the horizontal guide rail and the second sliding block.

Specifically, the lifting mechanism and the oblique sliding component are alternatively provided with an oblique guide rail, the other oblique guide rail is provided with a third sliding block matched with the oblique guide rail, and the oblique sliding component is in sliding connection with the lifting mechanism through the oblique guide rail and the third sliding block.

Specifically, the lead screw transmission assembly comprises a lead screw and a rotation connecting piece, the lead screw is in transmission connection with the direct-drive type driving device, the lead screw is in threaded connection with the rotation connecting piece, and the rotation connecting piece is fixedly connected with the inclined sliding block.

Specifically, a first through hole is formed in the oblique sliding component, a second through hole is formed in the rotating connecting piece, and the first through hole is coaxial with the second through hole;

the rotary connecting piece is arranged in the first through hole in a penetrating mode, and the screw rod is connected in the second through hole in a threaded mode.

Specifically, the lifting mechanism is a grinding grade lifting mechanism, and/or the oblique sliding component is a grinding grade oblique sliding component, and/or the screw rod is a grinding grade ball screw rod.

Specifically, the lifting device further comprises a displacement calibration member and a displacement sensing member, wherein the displacement calibration member is arranged in a sensing area of the displacement sensing member;

the displacement calibration member and the displacement sensing member are alternatively fixedly connected with the lifting mechanism, and the other is fixedly connected with the base, and under the state that the lifting mechanism reciprocates along the lifting direction relative to the base, the displacement calibration member and the displacement sensing member generate relative displacement along the lifting direction.

Specifically, the displacement calibration piece is a grating scale manufactured by adopting a photoetching process.

Specifically, the direct-drive type driving device comprises a split type direct-drive rotating motor, and the split type direct-drive rotating motor is in transmission connection with the screw rod transmission assembly.

The embodiment of the utility model has the following beneficial effects:

this application is connected with lead screw drive assembly transmission through directly driving formula drive arrangement, lead screw drive assembly is connected with oblique slip subassembly transmission, directly drive the motion of lead screw drive assembly of drive formula drive arrangement, and then drive oblique slip subassembly and move for base and elevating system, and then realize being located the elevating system of oblique slip subassembly top and being reciprocating motion along the elevating direction for the base, realize the accurate location regulation that the load object goes up and down through direct drive mode and lead screw drive, simultaneously through oblique slip subassembly and elevating system cooperation motion, the load bearing capacity and the delivery stability of device have been promoted.

Drawings

In order to more clearly illustrate the technical solution of the present utility model, the following description will make a brief introduction to the drawings used in the description of the embodiments or the prior art. It should be apparent that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained from these drawings without inventive effort to those of ordinary skill in the art.

FIG. 1 is a schematic diagram of a high-precision lifting device according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of another structure of a high-precision lifting device according to an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of the area A in FIG. 1;

FIG. 4 is a schematic diagram illustrating an exploded view of a high-precision lifting device according to an embodiment of the present utility model;

FIG. 5 is an exploded view of a part of a high-precision lifting device according to an embodiment of the present utility model;

FIG. 6 is an exploded view of another part of a high-precision lifting device according to an embodiment of the present utility model;

FIG. 7 is a schematic view of another partial structure of a high-precision lifting device according to an embodiment of the present utility model;

FIG. 8 is an exploded view of another part of a high-precision lifting device according to an embodiment of the present utility model;

FIG. 9 is an exploded view of another part of a high-precision lifting device according to an embodiment of the present utility model;

FIG. 10 is an exploded view of another part of a high-precision lifting device according to an embodiment of the present utility model;

wherein, the reference numerals in the figures correspond to:

100-direct drive type driving device, 200-control device, 300-base, 400-lead screw transmission assembly, 500-oblique sliding assembly, 600-lifting mechanism, 900-shell, 310-bottom plate, 311-horizontal guide rail groove, 320-vertical mounting plate, 330-control device mounting plate, 340-driving device mounting plate, 350-slider adapter plate, 410-lead screw, 420-rotating connecting piece, 421-second through hole, 430-coupling, 440-multiunit bearing, 450-bearing seat, 510-second wedge block, 520-horizontal slide plate, 521-first through hole, 610-first wedge block, 620-load plate, 710-lifting guide rail, 720-first slider, 730-horizontal guide rail, 740-second slider, 750-oblique guide rail, 760-third slider, 810-displacement calibration piece, 820-displacement sensing piece.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In the description of the present utility model, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "disposed," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1 to 10, the lifting device includes a direct-drive driving device 100, a base 300, a screw transmission assembly 400, an oblique sliding assembly 500 and a lifting mechanism 600; the screw rod transmission assembly 400, the inclined slide assembly 500 and the lifting mechanism 600 are respectively arranged on the base 300, and the lifting mechanism 600 is arranged above the inclined slide assembly 500; the direct-drive driving device 100 is in transmission connection with the screw rod transmission assembly 400, and the screw rod transmission assembly 400 is in transmission connection with the oblique sliding assembly 500; under the driving action of the direct-drive driving device 100, the screw transmission assembly 400 can drive the inclined sliding assembly 500 to reciprocate relative to the base 300 and the lifting mechanism 600, so as to drive the lifting mechanism 600 to reciprocate relative to the base 300 along the lifting direction. Thus, the accurate positioning adjustment of the lifting of the load object is realized through the direct-drive driving mode and the screw rod transmission, and meanwhile, the load bearing capacity and the carrying stability of the device are improved through the cooperative movement of the oblique sliding assembly 500 and the lifting mechanism 600.

Specifically, the lifting direction may be a vertical direction.

In some embodiments, the direct-drive driving device 100 includes a direct-drive rotating motor, and the direct-drive rotating motor is in transmission connection with the screw transmission assembly 400, so as to drive the screw transmission assembly 400 to rotate through the direct-drive rotating motor, thereby realizing the movement of the oblique-sliding assembly 500. The direct-drive rotary motor can be a split direct-drive rotary motor, and the rotor and the stator of the direct-drive rotary motor are of a non-contact structure, so that the adjustment precision of the movement of the screw rod transmission assembly 400 is improved, and the mute effect of the movement process is realized; the split direct-drive rotating motor can achieve the effects of shock absorption and even no shock under the low-speed motion state, and shock deviation is well reduced.

Specifically, the lifting device further includes a control device 200, where the control device 200 is electrically connected to the direct-drive driving device 100, so as to control the direct-drive driving device 100 to operate based on preset parameters.

In some embodiments, referring to fig. 4, 7, 9 and 10, the screw driving assembly 400 includes a screw 410 and a rotating connecting member 420, the screw 410 is in driving connection with the direct-drive driving device 100, the screw 410 is in screwed connection with the rotating connecting member 420, and the rotating connecting member 420 is fixedly connected with the oblique-sliding assembly 500. The screw rod 410 rotates under the driving action of the direct-drive driving device 100, and then the rotating connecting piece 420 translates relative to the screw rod 410 under the guiding action of threads, so that the inclined sliding component 500 is driven to move relatively relative to the base 300 and the lifting mechanism 600, and the rotating connecting piece 420 is screwed by the screw rod 410, so that the fine granularity control of the moving step length of the inclined sliding component 500 is realized. Specifically, the screw 410 is drivingly connected to the direct drive 100 through a coupling 430.

In one embodiment, the screw 410 may be a ball screw 410, the rotary connecting piece 420 is a ball screw nut, the ball screw 410 converts rotary motion into linear motion, and the movement of the ball screw nut drives the movement of the lifting mechanism 600, so that high-precision transmission of the lifting mechanism 600 in a vertical direction is realized. Specifically, the ball screw 410 may be a grinding grade ball screw 410.

In some embodiments, referring to fig. 9-10, the screw driving assembly 400 further includes a plurality of sets of bearings 440, the base 300 is provided with a bearing seat 450, and the screw 410 is mounted on the bearing seat 450 through the plurality of sets of bearings 440, so as to reduce the assembly difficulty.

In some embodiments, referring to fig. 7-8, the oblique sliding component 500 is provided with a first through hole 521, the rotating connecting piece 420 is provided with a second through hole 421, and the first through hole 521 is coaxial with the second through hole 421; the rotary connecting piece 420 is inserted into the first through hole 521, and the screw rod 410 is screwed into the second through hole 421 to be screwed with the rotary connecting piece 420. In this way, the connection of the rotary connector 420, the screw 410 and the diagonal slide member 500 is achieved through the coaxial through hole, which is advantageous for the motion control of the diagonal slide member 500.

In this embodiment, referring to fig. 5 to 8, the lifting mechanism 600 is slidably connected to the base 300 along the lifting direction, and the oblique sliding assembly 500 is slidably connected to the base 300 along the horizontal direction; the lifting mechanism 600 is slidably coupled to the ramp assembly 500.

Specifically, the lifting mechanism 600 is provided with a first wedge block 610, the inclined slide assembly 500 is provided with a second wedge block 510, and the wedge slope of the first wedge block 610 is relatively parallel to the wedge slope of the second wedge block 510. The direct-drive driving device 100 drives the screw rod 410 to rotate, so that the rotating connecting piece 420 generates linear motion to drive the inclined sliding assembly 500 fixedly connected with the rotating connecting piece 420 to do linear reciprocating motion relative to the base 300 along the horizontal direction, and simultaneously, the wedge-shaped inclined surface of the second wedge-shaped block 510 on the inclined sliding assembly 500 slides relative to the wedge-shaped inclined surface of the first wedge-shaped block 610 to push the lifting mechanism 600 to ascend or descend.

In some embodiments, the wedge slope of the first wedge 610 is 25 ° to 45 °, preferably 30 ° to 40 °, from horizontal. By controlling the included angle to the above value, a certain self-locking effect can be achieved on the premise of ensuring that the lifting mechanism 600 has enough lifting height, and the movement stability and the load stability of the lifting mechanism 600 are improved. Wherein a load object is placed on the elevating mechanism 600.

In some embodiments, the lifting mechanism 600 is a grinding-level lifting mechanism 600, and/or the oblique-sliding assembly 500 is a grinding-level oblique-sliding assembly 500, so that the accuracy of angles and planes can be effectively ensured, and the control precision of the lifting device can be further improved. Preferably, both the wedge-shaped incline of the lifting mechanism 600 and the wedge-shaped incline of the ramp assembly 500 are manufactured using a grinding process.

In some embodiments, referring to fig. 5, 6, 9 and 10, the lifting mechanism 600 is alternatively provided with a lifting rail 710 on the base 300, and another is provided with a first slider 720 matching with the lifting rail 710, and the lifting mechanism 600 is slidably connected with the base 300 along the lifting direction of the lifting mechanism 600 through the cooperation of the lifting rail 710 and the first slider 720. Specifically, the elevation guide 710 and the first slider 720 may limit the movement direction of the elevation mechanism 600, converting the movement of the diagonal slide member 500 into the elevation movement of the elevation mechanism 600. Optionally, the lifting rail 710 is fixedly disposed on the lifting mechanism 600, and the second slider 740 is fixedly disposed on the base 300.

In some embodiments, referring to fig. 1, a horizontal guide rail 730 is alternatively provided on the base 300 and the oblique sliding assembly 500, and a second slider 740 matched with the horizontal guide rail 730 is provided on the other, so that the oblique sliding assembly 500 is slidably connected with the base 300 along the horizontal direction through the mutual matching of the horizontal guide rail 730 and the second slider 740. Optionally, the horizontal guide rail 730 is fixedly disposed on the base 300, and the second slider 740 is fixedly disposed on the diagonal slide member 500.

In some embodiments, referring to fig. 1, an oblique guide rail 750 is alternatively provided on the lifting mechanism 600 and the oblique sliding assembly 500, and a third slider 760 matching with the oblique guide rail 750 is provided on the other, and the oblique sliding assembly 500 is slidably connected with the base 300 through the oblique guide rail 750 and the third slider 760. Optionally, the diagonal rail 750 is fixedly disposed at a side of the lifting mechanism 600 near the diagonal slide member 500, and the third slider 760 is fixedly disposed on the diagonal slide member 500.

In the embodiment of the present application, the lengths of the lifting rail 710, the horizontal rail 730 and the diagonal rail 750 may be set according to actual requirements, which is not limited herein.

In this way, under the transmission action of the screw rod 410, the bottom end of the inclined sliding assembly 500 moves through the cooperation of the horizontal guide rail 730 and the second slider 740, and at the same time, the end of the inclined sliding assembly 500 facing the lifting mechanism 600 moves through the cooperation of the third slider 760 and the inclined guide rail 750, so that the lifting mechanism 600 realizes lifting movement under the limit action of the lifting guide rail 710 and the first slider 720. By precisely matching the guide rails, the running direction of the second slider 740 is limited, the swing of the second slider 740 in the moving process is avoided, and the moving rigidity and the bearing capacity of the second slider 740 are improved.

In some embodiments, the angle between the oblique guide rail 750 and the horizontal guide rail 730 is 25 ° to 45 °, preferably 30 ° to 40 °, so that the guide rails have a good self-locking function, and a certain lifting height can be ensured.

In some embodiments, referring to fig. 9, the lifting device further includes a displacement calibration member 810 and a displacement sensing member 820, wherein the displacement calibration member 810 is disposed in a sensing area of the displacement sensing member 820; the displacement calibration member 810 and the displacement sensing member 820 are alternatively fixedly connected with the lifting mechanism 600, the other is fixedly connected with the base 300, under the state that the lifting mechanism 600 reciprocates along the lifting direction relative to the base 300, relative displacement along the lifting direction is generated between the displacement calibration member 810 and the displacement sensing member 820, so that the displacement sensing member 820 detects a relative displacement signal, position information, moving speed and the like of the lifting mechanism 600 are obtained, and the relative displacement signal is sent to the control device 200, so that the control device 200 controls operation parameters of the direct-drive driving device 100 based on the position information, the moving speed and the like, and further adjusts rotation parameters of the motor and rotation speed of the screw rod 410, thereby realizing closed-loop adjustment of the position and the moving speed of the lifting mechanism 600. Thus, the full closed loop control is realized, the problems of step loss, poor return stroke and the like are avoided, the state of the lifting mechanism 600 is detected in real time, and the lifting mechanism responds and feeds back in real time, and the control precision of the lifting device can reach below 0.5 mu m.

In one embodiment, displacement calibration member 810 may be a grating scale and displacement sensing member 820 may be a readhead. The grating scale is manufactured by adopting a photoetching process, has compact structure and high precision, and can realize high-precision detection and control of the position information.

To sum up, the working principle of the high-precision lifting device of the application is as follows: the direct-drive driving device 100 rotates, the rotational motion is converted into the linear motion through the screw rod 410, the second slider 740 and the horizontal guide rail 730 are driven to generate relative movement, when the second slider 740 moves leftwards relative to the horizontal guide rail 730 (namely, the second slider 740 faces the direction far away from the direct-drive driving device 100), the longitudinal distance between the inclined guide rail 750 and the horizontal guide rail 730 is increased, and the inclined sliding assembly 500 applies downward pulling force to the lifting mechanism 600 due to the height fixing of the inclined sliding assembly 500, so that the lifting mechanism 600 performs downward vertical motion through opposite sliding generated between the third slider 760 and the inclined guide rail 750; conversely, when the second slider 740 moves rightward relative to the horizontal rail 730 (i.e., the second slider 740 moves toward the direction approaching the direct-drive driving device 100), the longitudinal distance between the diagonal rail 750 and the horizontal rail 730 decreases, and the diagonal assembly 500 applies an upward pressing force to the lifting mechanism 600 due to the fixed height of the diagonal assembly 500, so that the lifting mechanism 600 performs an upward vertical movement by the opposite sliding generated between the third slider 760 and the diagonal rail 750; meanwhile, under the limiting action of the lifting guide rail 710 and the first slider 720, since the lifting guide rail 710 and the first slider 720 are alternatively fixedly disposed on the lifting mechanism 600 and the other is fixedly disposed on the base 300, only the degree of freedom of movement of the lifting mechanism 600 in the up-down direction is reserved, thereby realizing the vertical reciprocating movement of the lifting mechanism 600.

In addition, during the up-down movement of the lifting mechanism 600, the displacement sensor 820 installed in the lifting direction can accurately read the position of the displacement calibration member 810, and then transmit the position information to the control device 200, and the control device 200 realizes the rotation feedback adjustment of the direct-drive driving device 100 according to the position information until the lifting mechanism 600 moves to the target position, thereby realizing the full closed-loop control.

A first embodiment of the present utility model is described below with reference to fig. 1 to 10.

Example 1

Referring to fig. 1-10, the present embodiment provides a high-precision lifting device, which includes a base 300, an oblique sliding component 500, a lifting mechanism 600, a screw rod 410, a rotating connector 420, a plurality of groups of bearings 440, a bearing seat 450, a coupling 430, a displacement calibration member 810, a displacement sensing member 820, a direct-drive driving device 100 and a control device 200, wherein the screw rod 410 may be a ball screw, the rotating connector 420 may be a ball screw nut, the displacement calibration member 810 may be a grating scale manufactured by adopting a photolithography process, the displacement sensing member 820 may be a reading head, and the direct-drive driving device 100 may be a split direct-drive rotary driving motor.

Specifically, referring to fig. 1 and 9, the base 300 includes a bottom plate 310, a vertical mounting plate 320, a control device mounting plate 330 and a driving device mounting plate 340, where the vertical mounting plate 320 is fixedly connected with the bottom plate 310 to form a mounting space for the oblique sliding assembly 500, the lifting mechanism 600 and the screw 410, and the control device mounting plate 330 and the driving device mounting plate 340 are disposed on a side of the vertical mounting plate 320 facing away from the oblique sliding assembly 500 and are respectively fixedly connected with the vertical mounting plate 320.

The direct-drive driving device 100 is fixedly connected with the driving device mounting plate 340, and the control device 200 is fixedly connected with the control device mounting plate 330, so that the control device 200 and the direct-drive driving device 100 are integrally mounted on one side of the lifting mechanism 600 and the oblique sliding assembly 500, not only can the space occupation of the lifting device be reduced, but also the motion control of the lifting mechanism 600 is facilitated.

Specifically, the lifting mechanism 600 is a polishing-level lifting mechanism 600, the oblique-sliding assembly 500 is a polishing-level oblique-sliding assembly 500, and the screw 410 is a polishing-level ball screw.

Referring to fig. 5 to 9, the oblique-sliding assembly 500 includes a second wedge block 510 and a horizontal sliding plate 520, the bottom surface of the second wedge block 510 is fixedly connected with the horizontal sliding plate 520, and the lifting mechanism 600 includes a load plate 620 and a first wedge block 610 which are fixedly connected; the wedge-shaped inclined surface of the second wedge block 510 and the wedge-shaped inclined surface of the first wedge block 610 are disposed opposite to each other. The lifting device further includes a lifting rail 710, a first slider 720 matched with the lifting rail 710, a horizontal rail 730, a second slider 740 matched with the horizontal rail 730, a diagonal rail 750, and a third slider 760 matched with the diagonal rail 750.

Referring to fig. 8 and 9 together with fig. 1, a horizontal guide rail groove 311 is formed on the bottom plate 310, a horizontal guide rail 730 is fixedly disposed in the horizontal guide rail groove 311, a second slider 740 is fixedly connected to the bottom surface of the horizontal slider 520, and the inclined slider assembly 500 is slidably connected with the bottom plate 310 through cooperation of the horizontal guide rail 730 and the second slider 740. The third slider 760 is fixedly connected to the wedge-shaped inclined surface of the second wedge-shaped block 510, the inclined guide rail 750 is fixedly connected to the wedge-shaped inclined surface of the first wedge-shaped block 610, and the inclined sliding assembly 500 is slidably connected with the lifting mechanism 600 through the cooperation of the inclined guide rail 750 and the third slider 760.

Referring to fig. 5 and fig. 9 together with fig. 1 and fig. 3, a lifting guide rail 710 is fixedly connected to a side wall formed after the load board 620 and the first wedge block 610 are fixedly connected, the lifting guide rail 710 is arranged along a vertical direction, a slider adapter board 350 is fixedly arranged on one side of the vertical mounting board 320, which faces the oblique sliding component 500 and the lifting mechanism 600, the slider adapter board 350 is fixedly connected with the first slider 720, and the lifting mechanism 600 is slidably connected with the vertical mounting board 320 along the vertical direction through the cooperation of the lifting guide rail 710 and the first slider 720. The displacement calibration member 810 is fixedly installed on the side surface of the slider adaptor plate 350, and the displacement sensing member 820 is fixedly connected to the side wall of the lifting mechanism 600 where the lifting guide rail 710 is disposed.

Specifically, the angle between diagonal rail 750 and horizontal rail 730 is 25 ° to 45 °, preferably 30 ° to 40 °.

Specifically, referring to fig. 8 to 10, a first through hole 521 is provided on the horizontal sliding plate 520 of the oblique-sliding assembly 500, the rotary connecting member 420 is fixedly mounted on the first through hole 521, and the rotary connecting member 420 is provided with a second through hole 421 coaxial with the first through hole 521. The oblique-sliding assembly 500 is further provided with a screw rod avoidance groove communicated with the first through hole 521.

Specifically, the bearing seat 450 is fixedly connected with the bottom plate 310, the plurality of groups of bearings 440 are installed in the bearing seat 450 and connected with the screw rod 410 to realize the installation of the screw rod 410, one end of the screw rod 410 is in transmission connection with the direct-drive driving device 100 through the coupling 430, and the other end of the screw rod 410 is in threaded connection with the second through hole 421 of the rotary connecting piece 420 and extends into the screw rod avoiding groove. The length direction of the screw 410 is set along the length direction of the horizontal guide rail 730.

Specifically, referring to fig. 2 and 4, the high-precision lifting device is further provided with a housing 900, and the housing 900 is wrapped and disposed on the outer sides of the oblique sliding assembly 500 and the control device 200.

The working principle of the high-precision lifting device of the embodiment is as follows: the direct-drive driving device 100 drives the screw rod 410 to rotate, and pushes the rotary connecting piece 420 to move along the length direction of the screw rod 410, so that the whole inclined sliding assembly 500 is driven to do linear reciprocating motion along the horizontal guide rail 730, meanwhile, the third sliding block 760 fixed on the inclined sliding assembly 500 slides along the inclined guide rail 750, and under the limiting actions of the wedge-shaped inclined plane, the lifting guide rail 710 and the first sliding block 720, the lifting mechanism 600 slides along the lifting guide rail 710, so that ascending adjustment or descending adjustment is realized. In the lifting movement process of the lifting mechanism 600, the displacement sensing piece 820 moves up and down along with the lifting mechanism 600 to generate relative displacement with the displacement calibration piece 810, so that information acquisition of position information, moving speed and the like of the lifting mechanism 600 is realized, the information is sent to the control device 200, the control device 200 realizes feedback control of the direct-drive type driving device 100 based on the information, the rotating speed of the direct-drive type driving device 100 is regulated, the rotating speed of the screw rod 410 is controlled in a linkage manner until the lifting mechanism 600 reaches the target position, and the control precision of the lifting mechanism 600 can reach below 0.5 mu m through the technical scheme.

While the utility model has been described in terms of preferred embodiments, the utility model is not limited to the embodiments described herein, but encompasses various changes and modifications that may be made without departing from the scope of the utility model.

In this document, terms such as front, rear, upper, lower, etc. are defined with respect to the positions of the components in the drawings and with respect to each other, for clarity and convenience in expressing the technical solution. It should be understood that the use of directional terms should not be construed to limit the scope of the application as claimed.

The embodiments and features of the embodiments described herein can be combined with each other without conflict.

The above disclosure is only a preferred embodiment of the present utility model, and it is needless to say that the scope of the utility model is not limited thereto, and therefore, the equivalent changes according to the claims of the present utility model still fall within the scope of the present utility model.

Claims (13)

1. A high precision lifting device, characterized in that the lifting device comprises: the device comprises a direct-drive driving device (100), a base (300), a screw rod transmission assembly (400), an oblique sliding assembly (500) and a lifting mechanism (600);

the screw rod transmission assembly (400), the inclined sliding assembly (500) and the lifting mechanism (600) are respectively arranged on the base (300), and the lifting mechanism (600) is arranged above the inclined sliding assembly (500);

the direct-drive driving device (100) is in transmission connection with the screw rod transmission assembly (400), and the screw rod transmission assembly (400) is in transmission connection with the oblique sliding assembly (500);

under the driving action of the direct-drive driving device (100), the screw rod transmission assembly (400) can drive the inclined sliding assembly (500) to reciprocate relative to the base (300) and the lifting mechanism (600), so as to drive the lifting mechanism (600) to reciprocate relative to the base (300) along the lifting direction.

2. The high-precision lifting device according to claim 1, wherein the lifting mechanism (600) is slidably connected to the base (300) along a lifting direction, and the oblique sliding assembly (500) is slidably connected to the base (300) along a horizontal direction; the lifting mechanism (600) is in sliding connection with the oblique sliding component (500).

3. The high-precision lifting device according to claim 1, wherein the lifting mechanism (600) is provided with a first wedge block (610), the oblique sliding assembly (500) is provided with a second wedge block (510), and the wedge-shaped inclined surface of the first wedge block (610) is relatively parallel to the wedge-shaped inclined surface of the second wedge block (510).

4. A high precision lifting device according to claim 3, characterized in that the wedge-shaped inclined surface of the first wedge block (610) forms an angle of 25 ° to 45 ° with the horizontal.

5. A high precision lifting device according to any one of claims 1-4, characterized in that the lifting mechanism (600) and the base (300) are alternatively provided with lifting rails (710), and that the other is provided with a first slider (720) matching the lifting rails (710), through which lifting rails (710) and the first slider (720) the lifting mechanism (600) is slidingly connected with the base (300) in the lifting direction.

6. A high precision lifting apparatus according to any one of claims 1-4, characterized in that the base (300) and the ramp assembly (500) are alternatively provided with a horizontal guide rail (730), and the other is provided with a second slider (740) matching the horizontal guide rail (730), through which horizontal guide rail (730) and the second slider (740) the ramp assembly (500) is slidingly connected with the base (300) in the horizontal direction.

7. A high precision lifting apparatus according to any one of claims 1-4, characterized in that the lifting mechanism (600) and the oblique sliding assembly (500) are alternatively provided with oblique guide rails (750), and the other is provided with a third slider (760) matching the oblique guide rails (750), through which oblique guide rails (750) and the third slider (760) the oblique sliding assembly (500) is slidingly connected with the lifting mechanism (600).

8. The high-precision lifting device according to any one of claims 1-4, wherein the screw drive assembly (400) comprises a screw (410) and a rotating connecting piece (420), the screw (410) is in transmission connection with the direct-drive driving device (100), the screw (410) is in threaded connection with the rotating connecting piece (420), and the rotating connecting piece (420) is fixedly connected with the inclined sliding assembly (500).

9. The high-precision lifting device according to claim 8, wherein the oblique sliding component (500) is provided with a first through hole (521), the rotating connecting piece (420) is provided with a second through hole (421), and the first through hole (521) is coaxial with the second through hole (421); the rotary connecting piece (420) is arranged in the first through hole (521) in a penetrating mode, and the screw rod (410) is connected in the second through hole (421) in a threaded mode.

10. The high precision lifting device according to claim 8, wherein the lifting mechanism (600) is a grinding grade lifting mechanism (600), and/or the oblique-sliding assembly (500) is a grinding grade oblique-sliding assembly (500), and/or the screw (410) is a grinding grade ball screw.

11. The high precision lifting device according to any one of claims 1-4, further comprising a displacement calibration member (810) and a displacement sensing member (820), wherein the displacement calibration member (810) is disposed within a sensing area of the displacement sensing member (820);

the displacement calibration member (810) and the displacement sensing member (820) are alternatively fixedly connected with the lifting mechanism (600), and the other is fixedly connected with the base (300), and relative displacement along the lifting direction is generated between the displacement calibration member (810) and the displacement sensing member (820) in a state that the lifting mechanism (600) reciprocates along the lifting direction relative to the base (300).

12. A high precision lifting device according to claim 11, characterized in that the displacement calibration member (810) is a grating scale manufactured by a photolithographic process.

13. A high precision lifting device according to any one of claims 1-4, characterized in that the direct drive (100) comprises a split direct drive rotary electric machine in driving connection with the screw drive assembly (400).