Novel stress ring pressurizing device

Abstract

The invention discloses a novel stress ring pressurizing device. The novel stress ring pressurizing device comprises a pressurizing device body capable of achieving pressure adjustment to tightly press a strain gauge on a stress ring. The pressurizing device comprises an upper pressing block and a lower pressing block; and the hexagon bolt and the nut are used for oppositely pulling and pressurizing the upper pressing block and the lower pressing block. The upper pressing block is installed on the stress ring between the stress ring bosses and tightly attached to the strain gauge through the rubber pad, the butt joint groove of the lower pressing block correspondingly penetrates through the stress ring bosses, the lower pressing block is arranged on the stress ring bosses and tightly attached to the strain gauge through the rubber pad provided with a butt joint groove B, and the upper pressing block and the lower pressing block are in butt joint. A hexagon bolt penetrates from the mounting lug of the upper pressing block to the mounting lug of the lower pressing block and then is screwed with a nut for oppositely pulling and pressurizing; by adjusting the screwing of the hexagon bolt and the nut, the pressure adjustment can be realized, the bonding curing effect of the strain gauge and the stress ring is ensured during later heating curing, and the problem that the pressure adjustment cannot be realized when the strain gauge is pressed and pressed on the stress ring by a hand vice is solved.

Description

Technical Field

[0001] The invention relates to a novel stress ring pressurizing device, belonging to the technical field of aeroengines. Background Art

[0002] When bonding a strain gauge to a stress ring, the strain gauge needs to be pressurized after being bonded to the stress ring by adhesive and placed in a high temperature environment for baking and curing. The bonding strength between the strain gauge and the stress ring is affected by three factors: curing temperature, curing pressure and curing time.

[0003] The prior art uses a hand vise to pressurize the strain gauge onto the stress ring. The hand vise cannot achieve pressure regulation and cannot ensure the effect of temperature curing after the strain gauge and the stress ring are bonded. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a new stress ring pressurizing device.

[0005] The present invention is achieved through the following technical solutions.

[0006] The present invention provides a novel stress ring pressurizing device, comprising:

[0007] A pressurizing device that can achieve pressure adjustment and press the strain gauge tightly against the stress ring.

[0008] The pressurizing device comprises an upper pressing block and a lower pressing block;

[0009] And the hexagonal bolts and nuts for pulling and pressurizing the upper pressing block and the lower pressing block.

[0010] The upper pressing block and the lower pressing block are in arc shape.

[0011] The lower pressing block is provided with a docking groove corresponding to and penetrating the stress ring boss on the stress ring.

[0012] The circumferential length of the upper pressing block and the lower pressing block is the distance between the two stress ring bosses.

[0013] It also includes rubber pads, two rubber pads corresponding to the upper pressing block and the lower pressing block respectively; the rubber pad corresponding to the lower pressing block is provided with a docking groove B.

[0014] The upper pressing block and the lower pressing block are integrally and fixedly extended with mounting ears on both sides of the radial direction. There are two mounting ears symmetrically distributed on the upper pressing block or the lower pressing block. The mounting ears are provided with through holes for the hexagon socket bolts to pass through. The hexagon socket bolts pass through the mounting ears of the upper pressing block and are screwed with nuts after passing through the mounting ears of the lower pressing block.

[0015] The beneficial effects of the present invention are as follows: an upper pressing block is installed on the stress ring between the bosses of the stress ring, the upper pressing block is tightly attached to the strain gauge through a rubber pad, the docking groove of the lower pressing block corresponds to and penetrates the boss of the stress ring, the lower pressing block is on the boss of the stress ring, the lower pressing block is tightly attached to the strain gauge through a rubber pad with a docking groove B, the hexagonal bolt passes through the mounting ear of the upper pressing block to the mounting ear of the lower pressing block, and then the nut is screwed in to pull and pressurize; pressure regulation can be achieved by adjusting the screwing of the hexagonal bolt and the nut, and the bonding and curing effect of the strain gauge and the stress ring is guaranteed during the later temperature rise and curing, thereby solving the problem that the strain gauge cannot be pressurized and pressed on the stress ring by using a hand vise. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the installation of the upper pressing block, the lower pressing block and the stress ring of the present invention;

[0017] Figure 2 It is a top view schematic diagram of the installation of the upper pressing block, the lower pressing block and the stress ring of the present invention;

[0018] Figure 3 It is a top view schematic diagram of the upper pressing block and the lower pressing block of the present invention when they are installed in the stress ring;

[0019] In the figure: 1-stress ring; 2-upper pressure block; 3-lower pressure block; 31-jointing groove; 21-mounting ear; 4-hexagon socket bolt; 5-nut. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0021] like Figures 1 to 3 shown.

[0022] A novel stress ring pressurizing device of the present application comprises:

[0023] The upper pressing block 2 and the lower pressing block 3 are arc-shaped corresponding to the stress ring 1, and the lower pressing block 3 is provided with a docking groove 31 corresponding to the stress ring boss 11 on the stress ring 1. The circumferential length of the upper pressing block 2 and the lower pressing block 3 is the distance between the two stress ring bosses 11.

[0024] It also includes rubber pads (not shown in the figure), two rubber pads are respectively corresponding to the upper pressing block 2 and the lower pressing block 3. When there are six sets of upper pressing blocks 2 and lower pressing blocks 3, there are twelve rubber pads. The rubber pad corresponding to the lower pressing block 3 is provided with a docking groove B to penetrate and match the stress ring boss 11.

[0025] The upper pressing block 2 and the lower pressing block 3 are integrally and fixedly extended on both sides of the radial direction with mounting ears 21, and there are two mounting ears 21 symmetrically distributed on the upper pressing block 2 or the lower pressing block 3; the mounting ears 21 are provided with through holes for the hexagon socket bolts 4 to pass through, and the hexagon socket bolts 4 pass through the mounting ears 21 of the upper pressing block 2 to the mounting ears 21 of the lower pressing block 3 and are screwed with nuts 5.

[0026] A strain gauge is bonded to the stress ring 1, and the surface of the stress ring on which the strain gauge is installed is wrapped with fluoroplastics. An upper pressing block 2 is installed on the stress ring 1 between the stress ring bosses 11, and the upper pressing block 2 is tightly attached to the strain gauge through a rubber pad. A docking groove 31 of a lower pressing block 3 is correspondingly penetrated through the stress ring boss 11. The lower pressing block 3 is on the stress ring boss 11, and the lower pressing block 3 is tightly attached to the strain gauge through a rubber pad with a docking groove B. A hexagonal bolt 4 is penetrated from a mounting ear 21 of the upper pressing block 2 to the mounting ear 21 of the lower pressing block 3, and then a nut 5 is screwed in for pulling and pressurizing. Pressure regulation can be achieved by adjusting the screwing of the hexagonal bolt 4 and the nut 5. When the temperature is raised and solidified in the later stage, the bonding and curing effect of the strain gauge and the stress ring is guaranteed, and the problem that pressure regulation cannot be achieved by using a hand vise to pressurize the strain gauge on the stress ring is solved.

Claims

1. A new stress ring pressurizing device, characterized in that: include: A pressurizing device capable of realizing pressure adjustment to press the strain gauge tightly against the stress ring (1).

2. The novel stress ring pressurizing device according to claim 1 is characterized in that: The pressurizing device comprises an upper press block (2) and a lower press block (3); And a hexagonal bolt (4) and a nut (5) for pulling and pressuring the upper pressing block (2) and the lower pressing block (3).

3. The novel stress ring pressurizing device according to claim 2 is characterized in that: The upper pressing block (2) and the lower pressing block (3) are in arc shape.

4. The novel stress ring pressurizing device according to claim 2 is characterized in that: The lower pressing block (3) is provided with a docking groove (31) corresponding to and penetrating the stress ring boss (11) on the stress ring (1).

5. The novel stress ring pressurizing device according to claim 2 is characterized in that: The circumferential length of the upper pressing block (2) and the lower pressing block (3) is the distance between the two stress ring bosses (11).

6. The novel stress ring pressurizing device according to claim 2 is characterized in that: It also includes rubber pads, two rubber pads corresponding to the upper pressing block (2) and the lower pressing block (3) respectively; the rubber pad corresponding to the lower pressing block (3) is provided with a docking groove B.

7. The novel stress ring pressurizing device according to claim 2 is characterized in that: The upper pressing block (2) and the lower pressing block (3) are integrally and fixedly extended with mounting ears (21) on both sides of the radial direction, and the mounting ears (21) are symmetrically distributed on the upper pressing block (2) or the lower pressing block (3); the mounting ears (21) are provided with through holes for the hexagon socket bolts (4) to pass through, and the hexagon socket bolts (4) are screwed with nuts (5) after passing through the mounting ears (21) of the upper pressing block (2) and the mounting ears (21) of the lower pressing block (3).

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