CN110646157B

CN110646157B - Sliding window limiting impact test device

Info

Publication number: CN110646157B
Application number: CN201910929840.9A
Authority: CN
Inventors: 邓先来; 赵�卓; 章剑
Original assignee: China Helicopter Research and Development Institute
Current assignee: China Helicopter Research and Development Institute
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2021-08-13
Anticipated expiration: 2039-09-29
Also published as: CN110646157A

Abstract

The invention discloses a sliding window limit impact test device, wherein a swing support arm (4) is rotatably arranged on a mounting shaft (1) and can be transversely adjusted in position on the mounting shaft (1); the bottom of the swing support arm (4) is close to the upper position and is provided with a balancing weight (5), and the bottom plate (10) is provided with a fixed window and door mounting frame (6); window and door mounting bracket (6) and sliding window door (7) fixed connection, impact pillar (8) and sliding window door (7) fixed connection, swing support arm (4) end-to-end connection star (9), swing support arm (4) can drive star (9) striking fixed connection impact pillar (8) on sliding window door (7). The helicopter sliding window limiting impact test device can apply different impulse states to the sliding window and meet the test requirements of the sliding window on different initial speeds.

Description

Sliding window limiting impact test device

Technical Field

The invention belongs to a helicopter sliding window impact characteristic verification test technology, and relates to a sliding window impact test device.

Background

The limiting impact test of the helicopter sliding window is an important link of material selection and model selection analysis of the limiting block, the energy absorption efficiency and the structural rationality of the limiting material can be verified through the test, and data support is provided for the final design of the limiting block. The most key technology of the test is that different impulse states are applied to the sliding window, and the test requirements of different initial speeds of the sliding window are met; because the window and door divide into different initial velocity states, and the slip displacement is less, and the test piece structure is more narrow and short, adopts elastic energy storage device or power device all to realize hardly. At this time, a set of mechanism is required to be designed, and the function of instant loading of different initial speeds of the window and the door can be realized.

Disclosure of Invention

In view of the above situation in the prior art, the present invention aims to provide a sliding window limit impact test apparatus, which can apply different impulse states to a sliding window, meet test requirements of different initial speeds of the sliding window, and can be used for completing a helicopter sliding window limit impact test.

The above object of the present invention is achieved by the following technical solutions:

a sliding window limit impact test device comprises a mounting shaft, a swing support arm, a balancing weight, a window door mounting frame, a sliding window door, an impact strut, a star-shaped member and a bottom plate, wherein the swing support arm is rotatably mounted on the mounting shaft and can transversely adjust the position on the mounting shaft; the bottom of the swing support arm is close to the upper position and is provided with a balancing weight, and the bottom plate is provided with a fixed window and door mounting frame; the window and door mounting bracket is fixedly connected with the sliding window and door, the impact strut is fixedly connected with the sliding window and door, the tail end of the swing support arm is connected with the star-shaped piece, and the swing support arm can drive the star-shaped piece to impact the impact strut fixedly connected to the sliding window and door.

The mounting shaft is fixedly mounted on a left fixing support and a right fixing support, the left fixing support and the right fixing support can be fixedly connected to the left side and the right side of the bottom plate, and the fixing supports are preferably triangular supports.

The mounting shaft is provided with a transverse adjusting nut, and the swinging support arm is arranged on the transverse adjusting nut; the swing support arm is arranged on a polished rod with a protruding adjusting nut through a bearing

The window and door mounting rack is fixedly arranged at the position of the T-shaped groove in the middle of the bottom plate, the transverse adjustment and fixation of the window and door mounting rack can be realized by the function of the window and door mounting rack, and the impact position is ensured

The swing support arm end is equipped with waist type groove, and the star passes through the connecting piece to be installed in waist type groove, slides from top to bottom at swing support arm waist type groove through the star connecting piece, can adjust the star from top to bottom to guarantee that the impact point position is accurate.

The helicopter sliding window limiting impact test device can apply different impulse states to the sliding window, and meet the test requirements of different initial speeds of the sliding window; the device overcomes the defects that the initial speed state of the sliding window is more, the sliding displacement is small, the structure of a test piece is more narrow, and the adoption of an elastic energy storage device or a power device is difficult to realize. Through reasonable design test device, simplified operation flow, simple structure has practiced thrift test cost greatly.

Drawings

Fig. 1 is an isometric view of a sliding window limit impact test apparatus of the present invention.

Fig. 2 is a schematic diagram of the impact between the star-shaped member and the impact strut in the sliding window limit impact test 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.

Figure 1 is an isometric view of a sliding window limit impact testing apparatus of the present invention. As shown in the figure, the sliding window limit impact test device of the invention comprises a mounting shaft 1, a swing arm 4, a balancing weight 5, a window mounting frame 6, a sliding window 7, an impact strut 8, a star-shaped member 9 and a bottom plate 10, wherein the swing arm 4 is rotatably mounted on the mounting shaft 1 and can be transversely adjusted in position on the mounting shaft 1; the bottom of the swing support arm 4 is close to the upper position and is provided with a balancing weight 5, and the bottom plate 10 is provided with a fixed window and door mounting frame 6; the window and door mounting frame 6 is fixedly connected with the sliding window and door 7, the impact support column 8 is fixedly connected with the sliding window and door 7, the tail end of the swing support arm 4 is connected with the star-shaped part 9, and the swing support arm 4 can drive the star-shaped part 9 to impact the impact support column 8 fixedly connected to the sliding window and door 7.

Fig. 2 is a schematic diagram of the impact between a star-shaped member and an impact strut in the helicopter sliding window limit impact test device of the present invention. As shown, when the star-shaped member 9 strikes the impact strut 8, its outer contact profile and impact strut are in full abutment, and during movement, relative rolling occurs between the star-shaped member and the impact strut until they are completely separated, avoiding the loss of capacity due to sliding friction.

Wherein the installation axle 1 is fixedly installed on the left and right fixed brackets 2, the left and right sides of the bottom plate 10, and the fixed brackets 2 are triangular brackets.

The mounting shaft 1 is provided with a transverse adjusting nut 3, and the swinging support arm 4 is arranged on the transverse adjusting nut 3; the swing support arm 4 is arranged on a polished rod protruding from the adjusting nut 3 through a bearing

The window and door mounting rack 6 is fixedly arranged at the position of the T-shaped groove in the middle of the bottom plate 10, the transverse adjustment and fixation of the window and door mounting rack can be realized by the function of the window and door mounting rack, and the impact position is ensured

The tail end of the swing support arm 4 is provided with a waist-shaped groove, the star-shaped part is installed in the waist-shaped groove through a connecting piece, the star-shaped part connecting piece slides up and down on the waist-shaped groove of the swing support arm 4 to adjust the star-shaped part 9 up and down, and therefore the position of an impact point is accurate.

During assembly, firstly, the transverse adjusting nut 3 is installed on the installation shaft 1, and then the swinging support arm 4 is embedded with a bearing and installed on a polished rod protruding from the adjusting nut 3.

Subsequently, the two ends of the installation shaft 1 are connected with the left and right fixing supports 2, and the bottoms of the fixing supports 2 can be fixedly connected with the bottom plate 10.

The lower end of the swing support arm 4 is close to the upper position, a balancing weight 5 is installed and is pressed tightly by a nut, and the end part is provided with a star-shaped part 9 through a connecting piece;

installing an impact pillar 8 on a sliding window and door 7, fixedly installing the sliding window and door 7 on a window and door installation frame 6, and fixedly connecting the bottom of the window and door installation frame 6 with a slotted part of a bottom plate 10 by using a square head bolt;

before starting the test, an operator needs to adjust the transverse adjusting nut 3 and adjust the swing support arm 4 left and right; the front and back positions of the window and the door are adjusted by sliding the window and door mounting rack 6 and the bottom plate 10 back and forth in the slotting direction; the star-shaped part 9 is adjusted up and down by the star-shaped part connecting piece sliding up and down on the waist-shaped groove of the swing support arm 4, thereby ensuring the accurate position of the impact point.

Before the test is started, a tester calculates the mass of the balancing weight 5, the mass of the sliding window and door 7, the lifting swing angle of the swing support arm 4 and the capacity loss of the swing support arm 4 in the swing process according to the initial speed of the window and door, and then tests are carried out, so that the test process is clear and the test result is accurate.

Claims

1. A sliding window limit impact test device, comprising: the device comprises a mounting shaft (1), a swinging support arm (4), a balancing weight (5), a window mounting frame (6), a sliding window (7), an impact strut (8), a star-shaped member (9) and a bottom plate (10), wherein the swinging support arm (4) is rotatably mounted on the mounting shaft (1) and can transversely adjust the position on the mounting shaft (1); a balancing weight (5) is arranged at the upper position close to the bottom of the swinging support arm (4), and a fixed window and door mounting frame (6) is arranged on the bottom plate (10); window and door mounting bracket (6) and sliding window door (7) fixed connection, impact pillar (8) and sliding window door (7) fixed connection, swing support arm (4) end-to-end connection star (9), swing support arm (4) can drive star (9) striking fixed connection impact pillar (8) on sliding window door (7).

2. The sliding window limit impact test device according to claim 1, wherein the mounting shaft (1) is mounted with a lateral adjustment nut (3), and the swing arm (4) is mounted on the lateral adjustment nut (3).

3. The sliding window limit impact test device according to claim 2, wherein the swing arm (4) is mounted on a polished rod from which the adjusting nut (3) protrudes through a bearing.

4. The sliding window limit impact test device according to claim 1, wherein a T-shaped groove is formed in the middle of the bottom plate (10), and the window and door mounting frame (6) is fixedly installed in the position of the T-shaped groove in the middle of the bottom plate (10).

5. The sliding window limit impact test device according to claim 1, wherein the end of said swinging arm (4) is provided with a waist-shaped groove, and the star-shaped member is mounted in the waist-shaped groove through a connecting member.

6. The sliding window limit impact test device according to claim 1, wherein the mounting shaft (1) is fixedly mounted on the left and right fixing brackets (2).

7. The sliding window limit impact test device according to claim 6, wherein the left and right fixing brackets (2) are fixed to the left and right sides of the base plate (10).

8. The sliding window limit impact test device according to claim 1, wherein the fixed bracket (2) is a triangular bracket.