阅读说明：本技术 空间转动机构静平衡调测装置及方法 (Static balance adjusting and measuring device and method for space rotating mechanism ) 是由 陈立 李志慧 刘玉庆 彭效海 费志禾 张娇 王鹏伟 许腾 于 2021-10-09 设计创作，主要内容包括：本发明提供了一种空间转动机构静平衡调测装置及方法,调测装置包括测试平台、转轴支架、组合导轨以及测量系统,两套所述组合导轨分别安装在两个所述转轴支架的顶部并用于安装被检测件的两端,所述测量系统能够检测两个所述组合导轨的平行度和水平度；所述测试平台上具有第一安装结构进而能够允许两个所述转轴支架的底部可调节的固定在所述第一安装结构上进而实现两个所述转轴支架之间间距的调节从而匹配所述被检测件,本发明中的静平衡测试精度高,通过对转轴支架高度、间距及组合导轨位置的调整,以适应不同的尺寸转动体的静平衡测量需求,通用性好,成本低。(The invention provides a static balance adjusting and testing device and method for a space rotating mechanism, wherein the adjusting and testing device comprises a testing platform, rotating shaft supports, combined guide rails and a measuring system, two sets of combined guide rails are respectively arranged at the tops of the two rotating shaft supports and used for installing two ends of a detected piece, and the measuring system can detect the parallelism and levelness of the two combined guide rails; the static balance test device is characterized in that the test platform is provided with a first mounting structure, so that the bottoms of the two rotating shaft supports can be adjustably fixed on the first mounting structure, the distance between the two rotating shaft supports can be adjusted, and the two rotating shaft supports can be matched with a detected piece.)

1. A static balance adjusting and testing device of a space rotating mechanism is characterized by comprising a testing platform (1), a rotating shaft bracket (2), a combined guide rail (3) and a measuring system (4);

the two sets of combined guide rails (3) are respectively arranged at the tops of the two rotating shaft supports (2) and used for installing two ends of a detected piece (5), and the measuring system (4) can detect the parallelism and levelness of the two combined guide rails (3);

the testing platform (1) is provided with a first mounting structure, so that the bottoms of the two rotating shaft brackets (2) can be adjustably fixed on the first mounting structure, and the distance between the two rotating shaft brackets (2) can be adjusted to match the detected piece (5).

2. The static balance adjusting and measuring device of the space rotating mechanism according to claim 1, wherein the detected member (5) is supported on two sets of combined guide rails (3) through two external extending shafts (51) of the detected member, and the detected member (5) can reach a balanced state under multiple groups of symmetrical angles by increasing or decreasing standard weight members with different specifications on the detected member (5).

3. The static balance adjustment and measurement device of the space rotating mechanism according to claim 1, wherein the combined guide rail (3) comprises two support blocks (31) and a support rod (32);

the bottom of the supporting block (31) is adjustably fixed to the top of the rotating shaft support (2), two ends of the supporting rod (32) are respectively placed on the two supporting blocks (31) and fixed through a second connecting piece, and two ends of the detected piece (5) are placed on the supporting rod (32).

4. The static balance adjustment and measurement device of the spatial rotating mechanism according to claim 3, wherein the support block (31) is a V-shaped block, and the support rod (32) is a cylindrical rod, wherein the V-shaped block execution standard is JB/T8047, and the cylindrical rod execution standard is JB/T9881.

5. The space rotating mechanism static balance adjusting and measuring device according to claim 3, wherein the second connecting member comprises a second pressing block (33) and a first connecting bolt (34), one end of the second pressing block (33) is installed on one side of the top of the supporting block (31) through one first connecting bolt (34), and the other end of the second pressing block (33) is installed on the other side of the top of the supporting block (31) through the other first connecting bolt (34).

6. The static balance adjustment and measurement device of the space rotation mechanism according to claim 1, wherein a second accommodating space (6) is formed between the two rotation shaft brackets (2), and the second accommodating space (6) is matched with the detected piece (5).

7. The static balance adjusting and measuring device of the space rotating mechanism according to claim 1, wherein the rotating shaft support (2) is provided with a first accommodating space (21) inside, the bottom and the top of the rotating shaft support (2) are respectively provided with a first through hole and a second through hole, the first accommodating space (21) is connected with the first through hole and the second through hole is connected with the outside, a plurality of lightening holes (22) are arranged in the circumferential direction of the rotating shaft support (2), and the lightening holes (22) are communicated with the first accommodating space (21).

8. The static balance adjustment device of the space rotating mechanism according to claim 7, wherein the first mounting structure is a fixing groove (11) with a cross section in a convex structure;

the bottom of the rotating shaft support (2) is installed on the fixing groove (11) through a first connecting piece.

9. The spatial rotating mechanism static balance adjustment device according to claim 1, wherein the measuring system (4) adopts a laser tracker.

10. A static balance adjusting and measuring method of a space rotating mechanism is characterized by comprising the following steps:

s1, adjusting the distance between the two rotating shaft brackets (2) according to the specification of the detected piece (5) and fixing the adjusted rotating shaft brackets (2) on the test platform (1);

s2, mounting the combined guide rails (3) at the top of the rotating shaft bracket (2) and adjusting the parallelism and levelness of the two combined guide rails (3) to meet the requirements;

s3, the detected piece (5) is erected on two sets of combined guide rails (3) through two overhanging shafts (51) of the detected piece, and the detected piece (5) can reach a balanced state under multiple groups of symmetrical angles by increasing and decreasing standard weight pieces with different specifications on the detected piece (5).

Technical Field

The invention relates to the technical field of static balance testing, in particular to a device and a method for adjusting and testing the static balance of a space rotating mechanism.

Background

In order to avoid bearing dynamic constraint force or interference torque of the rotating shaft, particularly for space high-precision detection, the center of mass of a rotating body needs to be adjusted to the rotating shaft, and then ground static balance test and adjustment are needed.

At present, most static balance testing devices adopt an integrated fixed type, mainly aim at small parts such as machine tool grinding wheels, crankshaft connecting rods and the like, and few adjustable static balance testing devices can only adjust levelness or height in a one-way mode and have limited precision, so that the requirements of high-precision static balance testing of a large-scale spatial rotating mechanism cannot be met. Meanwhile, the large-size spatial rotating mechanism is mostly single-piece and different in size, and the static balance test tool with the large size customized independently is higher in cost.

Patent document CN210293541U discloses a planet carrier static balance testing device, which comprises a supporting frame, the upper end surface of the support frame is provided with a pair of supports capable of floating up and down, a rotation space of the planet carrier is kept between the two supports, the lower end of each support is connected with the support frame in a locking way through a connecting bolt, the upper end of each support is provided with a pair of rolling bodies capable of rotating freely, the rotation axis lines of the four rolling bodies are mutually parallel or coincident, a support groove is formed between the two rolling bodies on each support, the two supports jointly support a balance rotation shaft through the support groove, the balance rotating shaft comprises a balance shaft, two ends of the balance shaft are provided with optical shaft sections, a limit shaft shoulder, a mounting shaft section and a locking thread section are arranged between the two optical shaft sections, the installation shaft section is sleeved with a spline sleeve and a pressing sheet, and the locking thread section is matched with a locking thread sleeve for axially locking the pressing sheet, but the design has large rolling friction coefficient and low precision.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a static balance adjusting and measuring device and method for a space rotating mechanism.

The static balance adjusting and testing device for the space rotating mechanism comprises a testing platform, a rotating shaft bracket, a combined guide rail and a measuring system, wherein the testing platform is arranged on the rotating shaft bracket;

the two sets of combined guide rails are respectively arranged at the tops of the two rotating shaft brackets and used for installing two ends of a detected piece, and the measuring system can detect the parallelism and levelness of the two combined guide rails;

the test platform is provided with a first mounting structure, so that the bottoms of the two rotating shaft supports can be adjustably fixed on the first mounting structure, and the distance between the two rotating shaft supports can be adjusted to match the detected piece.

Preferably, the detected piece is erected on the two sets of combined guide rails through two overhanging shafts of the detected piece, and the detected piece can reach a balanced state under multiple groups of symmetrical angles by increasing or decreasing standard weight pieces with different specifications on the detected piece.

Preferably, the combined guide rail comprises two support blocks and a support rod;

the bottom of the supporting block is adjustably fixed to the top of the rotating shaft support, two ends of the supporting rod are respectively placed on the two supporting blocks and fixed through the second connecting piece, and two ends of the detected piece are placed on the supporting rod.

Preferably, the supporting block is a V-shaped block, the supporting rod is a cylindrical rod, wherein the V-shaped block execution standard is JB/T8047, and the cylindrical rod execution standard is JB/T9881.

Preferably, the second connecting member includes a second pressing block and a first connecting bolt, one end of the second pressing block is mounted on one side of the top of the supporting block through one first connecting bolt, and the other end of the second pressing block is mounted on the other side of the top of the supporting block through the other first connecting bolt.

Preferably, a second accommodating space is formed between the two rotating shaft brackets, and the second accommodating space is matched with the detected piece.

Preferably, the inside of pivot support has first accommodation space and the bottom of pivot support, top have first accommodation space respectively and connect outside first through-hole, the second through-hole, the circumference of pivot support is provided with a plurality of lightening holes just the lightening hole with first accommodation space intercommunication.

Preferably, the first mounting structure is a fixing groove with a cross section in a convex structure;

the bottom of the rotating shaft support is installed on the fixing groove through a first connecting piece.

Preferably, the measurement system employs a laser tracker.

The invention provides a static balance adjusting and measuring method of a space rotating mechanism, which comprises the following steps:

s1, adjusting the distance between the two rotating shaft brackets according to the specification of the detected piece and fixing the adjusted rotating shaft brackets on the test platform;

s2, mounting the combined guide rails on the top of the rotating shaft bracket and adjusting the parallelism and levelness of the two combined guide rails to meet the requirements;

and S3, the detected piece is erected on two sets of combined guide rails through two overhanging shafts of the detected piece, and the detected piece can reach a balanced state under multiple groups of symmetrical angles by increasing or decreasing standard weight pieces with different specifications on the detected piece.

Compared with the prior art, the invention has the following beneficial effects:

1. the static balance testing precision of the invention is high, the static balance measuring requirements of the rotating bodies with different sizes can be adapted by adjusting the height and the distance of the rotating shaft bracket and the position of the combined guide rail, the universality is good, and the cost is low.

2. The invention can realize the ground static balance test of the large-scale rotating body in space by combining the standard component with the existing test platform and the rotating shaft bracket, and has the characteristics of simple structure and low cost.

3. The rolling friction resistance coefficient is extremely small by selecting the standard component with high form and position precision and high surface hardness; meanwhile, the device is measured and adjusted by combining a measuring system, so that the additional resisting moment is further ensured to be far smaller than the index requirement, and the requirement of ground high-precision static balance adjustment and measurement of space rotating bodies such as detectors and the like can be met.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a schematic diagram of the apparatus of the present invention;

FIG. 2 is a schematic diagram of a measurement system;

FIG. 3 is a schematic structural view of a combination guide rail;

FIG. 4 is a schematic structural view of the first connecting member viewed from the side of the test platform;

FIG. 5 is a schematic structural view of the spindle bracket fixed to the test platform by the first connecting member;

FIG. 6 is a schematic view of a third connecting member, wherein the fourth clamping plate is not shown;

FIG. 7 is a block diagram of the steps of the method of the present invention;

fig. 8 is a block schematic diagram of the principles of the present invention.

The figures show that:

third clamping plate 15 of test platform 1

Third connecting bolt 16 of rotating shaft bracket 2

First accommodation space 21 of combined guide rail 3

Measurement system 4 relief hole 22

Detected member 5 supporting block 31

The second accommodation space 6 supports the rod 32

Second press piece 33 of fixing groove 11

First clamping plate 12 first connecting bolt 34

Second connecting bolt 13 protruding shaft 51

Second clamping plate 14

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.

Example 1:

the invention provides a static balance adjusting and testing device of a space rotating mechanism, which comprises a testing platform 1, rotating shaft brackets 2, combined guide rails 3 and a measuring system 4, wherein the testing platform 1 is provided with a first mounting structure so as to allow the bottoms of the two rotating shaft brackets 2 to be adjustably fixed on the first mounting structure, so that the distance between the two rotating shaft brackets 2 is adjusted to match a detected piece 5, the two combined guide rails 3 are respectively arranged at the tops of the two rotating shaft brackets 2 and are used for mounting two ends of the detected piece 5, the measuring system 4 can detect the parallelism and the levelness of the two combined guide rails 3, and the measuring system 4 preferably adopts a laser tracker.

The levelness here is a level of whether or not a plane on which the object 5 to be detected is mounted on the combination guide rail 3 is on a horizontal line, specifically, a level of a contact line between the support rod 32 on which the object 5 to be detected is mounted and the object 5 to be detected, and may be regarded as a levelness of an axis of the support rod 32 because the accuracy of the support rod 32 is high.

Further, in the measurement, the levelness of the two combined guide rails 3 should be adjusted to be less than 0.02mm, and the parallelism should be adjusted to be less than 0.05 mm.

As shown in fig. 1 and 4, the first mounting structure is a fixing groove 11 having a cross section in a convex shape, and the bottom of the rotating shaft bracket 2 is mounted on the fixing groove 11 by a first connecting member. When the installation is carried out, the distance between the two rotating shaft supports 2 can be adjusted, and then the rotating shaft supports 2 are fixed on the fixing grooves 11 through the first connecting pieces.

Further, the detected piece 5 is mounted on the two sets of combined guide rails 3 through the two overhanging shafts 51, as shown in fig. 1, in actual operation, standard weight pieces with different specifications are added and removed at the designated position of the detected piece 5, so that the detected piece 5 can reach a balanced state under multiple groups of symmetrical angles, and static balance adjustment and test of the detected piece 5 can be realized.

In practical application, in the process that the detected piece 5 is adjusted to a balance state under multiple groups of symmetrical angles, the static moment generated by adding or reducing the counter weight for the last time is smaller than the index requirement. Specifically, the indexes of the static moment of the inspected member 5 of different masses are different, and for example, for the inspected member of 500kg class, it should be less than or equal to 0.1kg · m. The invention has the characteristics of simple device structure, small additional moment, reliability and high precision. And the static balance high-precision adjustment and measurement of large rotating mechanisms in different size spaces can be realized by adjusting the height and the distance of the rotating shaft support 2 and the position of the combined guide rail.

A second accommodating space 6 is formed between the two rotating shaft brackets 2, the second accommodating space 6 is matched with the detected piece 5, and the second accommodating space 6 allows the detected piece 5 to be installed on the combined guide rail 3, so that the rotating shaft brackets 2 do not interfere with the detected piece 5 when the detected piece 5 rotates or is static. In practical application, the high-precision static balance of the detected parts 5 with different sizes can be adjusted and measured by designing the heights and the intervals of the two rotating shaft supports 2 and adjusting the positions of the combined guide rails 3 at the tops of the rotating shaft supports 2.

Specifically, the combined guide rail 3 includes two supporting blocks 31 and a supporting rod 32, the bottom of the supporting block 31 is adjustably fixed on the top of the rotating shaft bracket 2, two ends of the supporting rod 32 are respectively placed on the two supporting blocks 31 and fixed by a second connecting member, and two ends of the detected member 5 are placed on the supporting rod 32.

The second connecting member includes a second pressing block 33 and a first connecting bolt 34, one end of the second pressing block 33 is mounted on one side of the top of the supporting block 31 through one first connecting bolt 34, and the other end of the second pressing block 33 is mounted on the other side of the top of the supporting block 31 through the other first connecting bolt 34, so that the supporting rod 32 is fixed.

Furthermore, the combined guide rail 3 is a standard component combination, the supporting block 31 is a V-shaped block, the supporting rod 32 is a cylindrical rod, and the standard components are all standard components, wherein the execution standard of the V-shaped block is JB/T8047, and the execution standard of the cylindrical rod is JB/T9881.

The invention also provides a static balance adjusting and measuring method of the space rotating mechanism, as shown in fig. 7, comprising the following steps:

s1, adjusting the distance between the two rotating shaft brackets 2 according to the specification of the detected piece 5 and fixing the adjusted rotating shaft brackets 2 on the test platform 1;

s2, mounting the combined guide rails 3 on the top of the rotating shaft bracket 2 and adjusting the parallelism and levelness of the two combined guide rails 3 to meet the requirements;

and S3, the detected piece 5 is erected on two sets of combined guide rails 3 through two overhanging shafts 51 of the detected piece 5, and the detected piece 5 can reach a balanced state under multiple groups of symmetrical angles by increasing or decreasing standard weight pieces with different specifications on the detected piece 5.

Example 2:

this embodiment is a preferred embodiment of embodiment 1.

In this embodiment, as shown in fig. 4 and 5, the rotating shaft support 2 has a first accommodating space 21 inside and a bottom of the rotating shaft support 2, and the top has a first through hole and a second through hole respectively, where the first accommodating space 21 is connected to the outside, the rotating shaft support 2 is circumferentially provided with a plurality of lightening holes 22, the lightening holes 22 are communicated with the first accommodating space 21, the first connecting member includes a first clamping plate 12, a second connecting bolt 13, and a second clamping plate 14, when the rotating shaft support 2 is fixed, the first clamping plate 12 is installed in the first accommodating space 21, the second clamping plate 14 is installed in the fixing groove 11, and the second connecting bolt 13 sequentially passes through the first clamping plate 12, and the first through hole is in threaded connection with the second clamping plate 14, so as to fix the rotating shaft support 2 on the test platform 1.

The supporting block 31 is fixed at the top of the rotating shaft bracket 2 through a third connecting piece, the third connecting piece comprises a third clamping plate 15, a third connecting bolt 16 and a fourth clamping plate, as shown in fig. 6, the third clamping plate 15 is arranged on the top surface of the rotating shaft bracket 2, one end of the third clamping plate presses the bottom edge of the supporting block 31, the third connecting bolt 16 penetrates through the third clamping plate 15 and the second through hole to be in threaded connection with the fourth clamping plate, and then the supporting block 31 is fixed at the top end of the rotating shaft bracket 2.

In this embodiment, the surveying system 4 employs a theodolite.

According to the invention, two rotating shaft supports 2 are arranged on a test platform 1 through second connecting pieces, two sets of combined guide rails 3 are respectively arranged at the tops of the two rotating shaft supports 2 through respective third connecting pieces, the levelness and parallelism of the two sets of combined guide rails 3 are measured and adjusted through a measuring system 4, and a detected piece 5 is arranged on the two sets of combined guide rails 3 through two self overhanging shafts 51. The static balance of the detected pieces 5 with different sizes can be adjusted and measured by adjusting the height and the distance of the rotating shaft support 2 and the position of the combined guide rail 3.

The working principle of the invention is as follows:

as shown in fig. 1, 3 and 8, the height of the rotating shaft bracket 2 and the placement distance on the test platform 1 are determined according to the rotating radius, the width and the like of the detected piece 5, and the rotating shaft bracket 2 is connected with the test platform 1 through a second connecting piece. Two V-shaped blocks and a cylindrical rod are combined into a combined guide rail 3, two sets of combined guide rails 3 are respectively placed at the top ends of two rotating shaft supports 2, the levelness and the parallelism of the two sets of combined guide rails 3 are adjusted and measured through a measuring system 4, gaskets are added and decreased between the combined guide rails 3 and the top surfaces of the rotating shaft supports 2 and adjusted to required precision, and the combined guide rails 3 and the rotating shaft supports 2 are fixed through connecting pieces matched with pressing plates and bolts and the like.

The detected piece 5 is placed on the combined guide rail 3, the balance state of the detected piece 5 at each pair of symmetrical angles (such as 0 degree, 30 degrees, 60 degrees and the like) is observed, the unbalance amount is calculated, the standard weight piece is installed at the specified position of the detected piece 5, the process is circulated until the detected piece 5 is balanced at each symmetrical angle, the static moment generated by the last increase and decrease of the weight is smaller than the index requirement, and the static balance adjustment and measurement are finished.

The invention realizes the ground static balance test of the large-scale rotating body in space, and has the advantages of simple structure, low cost, reliable measuring method and high precision.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.