阅读说明：本技术 一种无级变角标测装置 (Stepless variable angle mapping device ) 是由 孙云伟 李大海 徐宇亮 于 2019-09-29 设计创作，主要内容包括：本发明公开一种无级变角标测装置,包括调节盘(1)、摩擦片(2)、滚动轴(3)、支架(5)、角度调节组件、角度调节台(10)和安装板(11),其中滚动轴(3)穿过支架(5),一端与调节盘(1)连接,另一端与T型的连接座(8)的底板连接,滚动轴(3)两侧对称安装摩擦片(2),其中一片摩擦片用于防滚动轴(3)倾转,另一片用于锁紧滚动轴(3),用于安装试验件的安装板(11)通过角度调节组件,安装在连接座(8)的竖板上,所述角度调节组件可调节试验件角度。连接座(8)的竖板的旋转中心与滚动轴(3)的旋转中心一致。本发明的无级变角标测装置能够对柔性梁、复合材料等非规则形状试验件提供无级变角标定,提高了非规则形状柔性梁、复合材料试验件标定精度及标定效率。(The invention discloses a stepless variable angle mapping device which comprises an adjusting disc (1), friction plates (2), a rolling shaft (3), a support (5), an angle adjusting assembly, an angle adjusting platform (10) and a mounting plate (11), wherein the rolling shaft (3) penetrates through the support (5), one end of the rolling shaft is connected with the adjusting disc (1), the other end of the rolling shaft is connected with a bottom plate of a T-shaped connecting seat (8), the friction plates (2) are symmetrically mounted on two sides of the rolling shaft (3), one friction plate is used for preventing the rolling shaft (3) from tilting, the other friction plate is used for locking the rolling shaft (3), the mounting plate (11) used for mounting a test piece is mounted on a vertical plate of the connecting seat (8) through the angle adjusting assembly, and the angle of the test piece can be adjusted through the. The rotation center of the vertical plate of the connecting seat (8) is consistent with the rotation center of the rolling shaft (3). The stepless variable angle mapping device can provide stepless variable angle calibration for irregular-shaped test pieces such as flexible beams and composite materials, and improves the calibration precision and calibration efficiency of the irregular-shaped flexible beams and the composite material test pieces.)

1. The utility model provides a stepless variable angle mark survey device, includes adjusting disk (1), friction disc (2), roll axis (3), support (5), angle adjusting part and mounting panel (11), wherein roll axis (3) pass support (5), one end is connected with adjusting disk (1), the other end is connected with the bottom plate of the connecting seat (8) of T type, roll axis (3) bilateral symmetry installation friction disc (2), one of them friction disc is used for preventing roll axis (3) vert, another piece is used for locking roll axis (3), mounting panel (11) for installing the test piece passes through angle adjusting part, install on the riser of connecting seat (8), the adjustable test piece angle of angle adjusting part, the rotation center of the riser of connecting seat (8) is unanimous with the rotation center of roll axis (3).

2. The infinitely variable angle mapping device according to claim 1, further comprising a fixing bushing (4) fixed on the support (5), wherein the rolling shaft (3) passes through the fixing bushing (4) to be connected with the adjusting disk (1).

3. The infinitely variable angle mapping device according to claim 1, wherein the angle adjustment assembly comprises an angle adjustment table (10) and an adjustment plate (9), the angle adjustment table (10) being mounted on a riser of the connection base (8) via the adjustment plate (9).

4. The apparatus according to claim 3, wherein the adjustment plate (9) is a plate structure with a circular slot in the middle, the depth of the slot is smaller than the height of the circular boss of the angle adjustment table (10), and the circular boss of the angle adjustment table (10) is embedded in the circular slot.

5. The infinitely variable angle mapping device according to claim 1, wherein the adjustment disk (1) is a disk structure.

6. The infinitely variable angle mapping device according to claim 1, wherein the adjustment disk (1) is internally grooved.

7. The infinitely variable angle mapping device according to claim 1, wherein thread pairs (7) are fixed on the support (5) in pairs, and the locking bolt (6) is connected with the thread pairs (7) to lock the friction plate (2).

8. The stepless variable angle mapping device according to claim 7, wherein the outer surface of the friction plate [2] is processed with a plane surface to contact with the locking bolt (6).

Technical Field

The invention belongs to the technical field of fatigue tests of flexible beams of unmanned helicopters, and particularly relates to a stepless variable-angle mapping device.

Background

The composite material flexible beam is a key moving part in a helicopter rotor system, and bears all loads of a helicopter, including flapping force, shimmy force, centrifugal force generated during high-speed rotation and the like. In order to master the fatigue characteristics of the composite material flexible beam, a fatigue test needs to be carried out on the ground, and before the fatigue test, calibration measurement needs to be carried out on a strain gauge on the flexible beam to determine the relation between bending moment and strain. The calibration result is directly related to success or failure of the test, so that the accurate calibration method is provided and is very important for checking the service life of the helicopter flexible beam. However, no report of relevant mapping devices is currently seen.

Disclosure of Invention

In view of the above situation in the prior art, the present invention aims to provide a stepless variable angle mapping device for calibration before a helicopter flexbeam test, and the device of the present invention is adopted to perform a helicopter flexbeam calibration test, so that the relationship between strain and bending moment on a flexbeam can be accurately obtained, and support is provided for load application in a subsequent fatigue test.

The stepless variable-angle mapping device comprises an adjusting disc, friction plates, a rolling shaft, a support, an angle adjusting assembly and a mounting plate, wherein the rolling shaft penetrates through the support, one end of the rolling shaft is connected with the adjusting disc, the other end of the rolling shaft is connected with a bottom plate of a T-shaped connecting seat, the friction plates are symmetrically mounted on two sides of the rolling shaft, one friction plate is used for preventing the rolling shaft from tilting, the other friction plate is used for locking the rolling shaft, the mounting plate used for mounting a test piece is mounted on a vertical plate of the connecting seat through the angle adjusting assembly, and the angle adjusting assembly can adjust the angle of the test piece. The rotation center of the vertical plate of the connecting seat is consistent with the rotation center of the rolling shaft.

The stepless variable angle mapping device also comprises a fixed shaft sleeve fixed on the bracket, wherein the rolling shaft penetrates through the fixed shaft sleeve to be connected with the adjusting plate, and the fixed shaft sleeve can fix the position of the friction plate and keep the concentricity of the shaft.

The adjusting plate is of a disc structure, and the disc is internally provided with a groove, so that the weight can be reduced.

The brackets are fixedly provided with thread pairs in pairs, the locking bolt is connected with the thread pairs to lock the friction plates, and the outer surfaces of the friction plates are processed with planes which are in contact with the locking bolt.

The angle adjusting component comprises an angle adjusting platform and an adjusting plate, and the angle adjusting platform is installed on a vertical plate of the connecting seat through the adjusting plate.

During the angle adjustment, adjust connecting seat and regulating plate, connecting bolt elasticity and change regulating plate and angle modulation platform, the assembled relation reaches fixedly or relaxs.

The adjusting plate is of a structure with a middle opening circular groove plate, and the groove depth of the adjusting plate is smaller than the height of a circular boss of the angle adjusting table. The circular boss is embedded in the circular groove, and the adjusting plate is tightly pressed and embedded in the angle adjusting table under the condition that the adjusting plate is fixed on the connecting seat through bolts. The tightness of the adjusting bolt can change the compression state, so that the adjusting table can be rotated to further change the angle of the test piece arranged on the mounting plate.

The stepless variable angle mapping device can provide stepless variable angle calibration for irregular-shaped test pieces such as flexible beams and composite materials, improves the calibration precision and calibration efficiency of the irregular-shaped flexible beams and the composite material test pieces, can be used under the condition of complex ground, does not need to consider whether the support is installed to be vertical to the ground or not, and can adjust the test pieces to be at an ideal calibration angle.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the infinitely variable angle mapping device of the present invention.

Detailed Description

The technical scheme of the invention is clearly and completely described in combination with the embodiment of the invention by referring to the attached drawings.

As shown in fig. 1, the stepless variable angle mapping device of the present invention includes an adjusting plate 1, a friction plate 2, a rolling shaft 3, a fixing sleeve 4 (optionally, for fixing the position of the friction plate 2 and maintaining the concentricity of the shaft), a bracket 5, a locking bolt 6, a thread pair 7, a connecting seat 8, an angle adjusting assembly (including an adjusting plate 9 and an angle adjusting table 10), and a mounting plate 11. Fixed axle sleeve 4 is fixed at support 5, roll shaft 3 passes fixed axle sleeve 4 and passes through bolted connection adjusting disk 1, the vice 7 in pairs of installation of screw thread is fixed at support 5, the vice 7 locking friction disc 2 of locking bolt 6 connecting thread on both sides, roll shaft 3 is connected with connecting seat 8, angle adjusting station 10 installs on connecting seat 8 through regulating plate 9, connecting seat 8 is T type structure, the bottom plate is opened there is connecting hole to connect roll shaft 3, riser trompil connection adjusting plate 9, at first make the extra moment that one of them friction disc 2 balance marking piece brought through adjusting locking bolt 6 according to the marking piece quality, guarantee that the marking piece can not respond the produced overturning moment of self quality and out of control in the rotation process, rotate adjusting disk 1 regulation needs the angle to mark the measurement after having adjusted.

In the stepless variable-angle mapping device, the adjusting disc 1 can be a disc structure, the upper surface of the adjusting disc is provided with a connecting hole, and the disc is internally provided with a groove so as to reduce the weight. The friction plates 2 are of annular structures and are used in pairs, the diameter of the inner surface of each friction plate is equal to that of the rolling shaft 3, a plane is machined on the outer surface of each friction plate and is in contact with the locking bolt 6, one friction plate is used for preventing the rotation, and the other friction plate is used for locking.

In the stepless variable angle mapping device, the two ends of the rolling shaft 3 are provided with connecting holes which are respectively connected with the adjusting disk 1 and the connecting seat 8, and the outer diameter of the rolling shaft is matched with the inner diameter of the fixed shaft sleeve 4 to form clearance fit.

In the stepless variable-angle mapping device, the thread pairs 7 are symmetrically used, each thread pair is provided with a threaded hole, and the central line of the threads is in the same plane with the axes of the rolling shaft 3 and the fixed shaft sleeve 4 during installation; the adjusting plate 9 is a structure with a middle circular groove plate, and the groove depth of the adjusting plate is smaller than the circular boss of the angle adjusting table 10. The middle of the adjusting plate 9 is provided with a through hole, and the diameter of the through hole is larger than the minimum diameter of the angle adjusting table 10 and smaller than the maximum diameter of the angle adjusting table; the angle adjusting table 10 is of a stepped shaft structure, a round shaft with a large diameter is connected with the adjusting plate 9, and a connecting hole is formed in the end face of the round shaft with the small diameter and connected with the mounting plate 11. That is, the circular boss is fitted into the circular groove, and the adjusting plate 9 is pressed against the angle adjusting table 10 fitted therein in the state where the adjusting plate 9 is fixed to the coupling base 8 by bolts. Adjusting the bolt tightness changes the compression state so that the angle adjusting table 10 can be rotated to change the angle of the test piece mounted on the mounting plate 11.

The stepless variable angle mapping device can provide stepless variable angle calibration for irregular-shaped test pieces such as flexible beams and composite materials, can improve the calibration precision and calibration efficiency of the irregular-shaped flexible beams and the composite material test pieces, can be used under the condition of complex ground, does not need to consider whether the support is installed to be vertical to the ground or not, and can adjust the test pieces to be at an ideal calibration angle.