Two-degree-of-freedom leveling device

A technology of leveling device and degree of freedom, applied in the direction of program-controlled manipulators, manufacturing tools, manipulators, etc., can solve the problems of large volume, large space occupation, slow working speed, etc., to reduce the volume of equipment, reduce the activity space, eliminate effect of influence

Inactive Publication Date: 2013-02-13
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, among the two-degree-of-freedom leveling devices, the leveling mechanism with a double-ring series structure is widely used. Although this type of mechanism is relatively mature, it is bulky and not suitable for occasions with large loads. For example, the existing Vehicle-mounted camera stabilization platform (an automatic leveling device), Chinese Patent No. 201010173348.2, is a typical series-type leveling device, which is not suitable for applications with heavy loads; its structure consists of: the bottom is a horizontal rotating base, The upper part is a bracket that can tilt and move, and the camera is installed on the bracket
Common two-degree-of-freedom parallel mechanisms mostly use hydraulic cylinders and other components, which take up a lot of space and work slowly. For example, the patent "parallel robot", patent number 201010521427.8; its structural form is: the base is connected to several vertical hydraulic or pneumatic drive cylinders as Connecting rods, all connecting rods are connected to the moving platform at the top, and its driving components are mainly pneumatic or hydraulic components, which require additional power equipment, such as hydraulic pumps, etc., which occupy a large space

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0018] Embodiment 1 is the situation of two sets of parallel mechanisms 4, see figure 1 and figure 2 , the leveling device includes a gear transmission box 1, a static platform base 2, a driving motor 3, a parallel mechanism 4, a moving platform load connecting plate 6, a supporting outer wall 8, a moving platform fixing hinge 9, and a moving platform fixing plate 14.

[0019] see figure 1 and Figure 4 , the static platform base 2 is the assembly reference of all main parts of the whole stabilizing device, the gear transmission box 1, the drive motor 3 and the parallel mechanism 4 are all fixed here. The parallel mechanism 4 is perpendicular to the top of the static platform base 2, and the top of the parallel mechanism 4 is a load connection plate 6 of the moving platform, which is connected to each other by a ball joint 7. The driving motor 3 and the parallel mechanism 4 are on the same side of the static platform base 2, and the transmission of power between them is re...

Embodiment 2

[0023] Embodiment 2 is the case of three sets of parallel mechanisms 4. The leveling device includes a gear transmission box 1, a static platform base 2, a driving motor 3, a parallel mechanism 4, a load connection plate 6 for a moving platform, and a supporting outer wall 8. The moving platform is fixed. Hinge 9, moving platform fixed plate 14 forms.

[0024] The static platform base 2 is the assembly reference of all main parts of the whole stabilizing device, and the gear transmission box 1, the drive motor 3 and the parallel mechanism 4 are all fixed here. The parallel mechanism 4 is perpendicular to the top of the static platform base 2, and the top of the parallel mechanism 4 is a load connection plate 6 of the moving platform, which is connected to each other by a ball joint 7. The driving motor 3 and the parallel mechanism 4 are on the same side of the static platform base 2, and the transmission of power between them is realized by the gear transmission box 1 installe...

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Abstract

The invention discloses a two-degree-of-freedom leveling device, which comprises a gear transmission box, a static platform base, a driving motor, a parallel mechanism, a movable platform load connecting plate, a supporting outer wall, a movable platform fixed hinge and a movable platform fixed plate, wherein the parallel mechanism further comprises a ball screw, a ball screw nut, a connecting pin, a screw nut supporting connecting piece and a supporting mechanism; according to the invention, compared with the form of a serial structure, the form of parallel structure has the advantage that the loading capacity is enhanced; according to the invention, compared with hydraulic and pneumatic driving, motor driving has the advantages that additional power equipment is omitted and volume is reduced; according to the invention, compared with a form that the parallel structure is driven by other motors, the form that a push rod mechanism with larger volume in the parallel mechanism is fixed has the advantages that the part moving space is reduced under a large-load condition, so that the equipment volume is reduced; in addition, compared with integrated electric push cylinder driving, the form that the driving motor is fixed on the base has the advantage that influences of the motor weight on mechanical performance of the parallel mechanism are effectively eliminated.

Description

technical field [0001] The invention belongs to the field of attitude stable platforms, in particular to a two-degree-of-freedom leveling device. Background technique [0002] At present, among the two-degree-of-freedom leveling devices, the leveling mechanism with a double-ring series structure is widely used. Although this type of mechanism is relatively mature, it is bulky and not suitable for occasions with large loads. For example, the existing Vehicle-mounted camera stabilization platform (an automatic leveling device), Chinese Patent No. 201010173348.2, is a typical series-type leveling device, which is not suitable for applications with heavy loads; its structure consists of: the bottom is a horizontal rotating base, The upper part is a bracket that can tilt and move, and the camera is installed on the bracket. Common two-degree-of-freedom parallel mechanisms mostly use hydraulic cylinders and other components, which take up a lot of space and work slowly. For examp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B25J9/00
Inventor 张合马少杰李豪杰李珂翔陆冰清顾林沈德璋
Owner NANJING UNIV OF SCI & TECH
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