Concave type curved surface clamping tool

Abstract

The utility model belongs to the technical field of anti-icing and deicing assembly, and relates to a concave curved surface clamping tool. The sandbag is composed of a sandbag body, a clamping flat plate and an F-shaped clamp. The tool is easy and convenient to operate, the fitting degree of the tool and the curved surface is controlled by adjusting the amount of sand in the sandbag, the sandbag is pressed by the clamping flat plate, clamping force is ensured to be transmitted to the sandbag through the clamping flat plate through clamping of the F-shaped clamp, and the sandbag transmits the clamping force to the electric heating device and the engine air inlet lip. And the fitting degree of the electric heating device and the lip of the air inlet duct of the engine can be effectively ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-deicing assembly and relates to an inward-recessed curved surface clamping tool. Background Art

[0002] Aircraft engine inlet lip anti-icing requirements necessitate bonding an electric heater to the lip. This requires ensuring a secure, reliable, bubble-free, and deformation-free bond to the inward curved surface of the lip, and precise bonding. Meeting these requirements directly determines the lip's ability to prevent ice and ensure flight safety. The narrow inward curved surface of the lip, and the presence of the engine inlet connecting structure at its upper end, makes conventional bonding fixtures difficult to use. Utility Model Content

[0003] The purpose of the utility model is to provide a mounting fixture for effectively bonding an electric heating device and an engine air intake duct lip.

[0004] Technical Solution

[0005] Provided is an inward-concave curved surface clamping tool, comprising a clamp 1, a clamping plate 2 and a sandbag 3;

[0006] The F-type clamp 1 includes a support base 5, a threaded rod 6, an upper clamping block 7, and a lower clamping block 8; the upper clamping block is connected to the clamping plate 2, and the lower clamping block is connected to the engine intake lip 4. By adjusting the threaded rod 6, the distance between the upper clamping block 7 and the lower clamping block 8 is adjusted so that the F-type clamp has a clamping capacity;

[0007] The clamping plate 2 includes a first curved clamping plate 9, a second curved clamping plate 10, a first strip clamping plate 11, and a second strip clamping plate 12. The first curved clamping plate 9, the second curved clamping plate 10, the first strip clamping plate 11, and the second strip clamping plate 12 can be connected end to end to form a ring. The clamping plate can evenly transmit the clamping force of the F-shaped clamp 1 to the sandbag 3, so that the sandbag 3 is evenly and tightly pressed against the engine intake lip 4.

[0008] The sandbags 3 include a first curved sandbag 13, a second curved sandbag 14, a first strip sandbag 16, and a second strip sandbag 15. The first curved sandbag 13, the second curved sandbag 14, the first strip sandbag 16, and the second strip sandbag 15 can be connected end to end to form a ring. The amount of sand in the sandbags is adapted to the size of the engine intake lip 4, and the sandbags can fill the entire inward curved surface of the engine intake lip 4.

[0009] There are multiple clips 1, and the multiple clips can provide a clamping force between the engine air intake lip 4 and the clamping plate.

[0010] Preferably, the clip 1 is an F-type clip or a G-type clip.

[0011] Preferably, the clamp includes a semi-enclosed support seat 5, a threaded rod 6, an upper clamping block 7 and a lower clamping block 8; the upper clamping block 7 is fixedly connected to the threaded rod, the semi-enclosed support seat 5 is provided with a threaded hole, the threaded rod 6 is rotatably fitted in the threaded hole, the upper clamping block corresponds to the clamping flat plate 2, and the lower clamping block corresponds to the engine air intake lip 4. By adjusting the threaded rod 6, the distance between the upper clamping block 7 and the lower clamping block 8 is adjusted so that the F-type clamp has clamping ability.

[0012] Preferably, the contact surfaces of the upper clamping block and the lower clamping block are provided with a flexible material layer to avoid damaging the surface of the air inlet.

[0013] After the electric heater is bonded to the engine intake lip, it is tightly pressed against the inward curved surface of the engine intake lip using sandbags 3. The sand is shaken to ensure even distribution and a flush surface, minimizing gaps between the sand and ensuring uniform force transmission. The clamping plate 3 is installed perpendicular to the normal direction of the engine intake lip and ultimately presses against the sandbags. The F-type clamp 1 transmits force to the clamping plate and the engine intake lip by tightening the bolts.

[0014] The function of the sandbag 3 is to press the electric heating device tightly onto the sunken surface of the engine intake lip, and to ensure that the sand is evenly distributed and the surface is flush by shaking, thereby reducing the gaps between the sand and ensuring uniform force transmission.

[0015] Technical Effects

[0016] 1. The clamping fixture of this utility model is easy to operate. Compared with traditional fixtures, it has a wide range of applications, high economy and changeable controllability.

[0017] 2. Due to the limitations of the engine intake lip structure, traditional tooling fixtures cannot be directly installed on the sunken curved surface of the engine intake lip. The use of sandbags ensures convenient installation while meeting the clamping needs.

[0018] 3. This fixture is mainly used for bonding the electric heating device of the engine air inlet lip, and can be further expanded to be used for bonding the electric heating device on the surface of complex variable curvature wings.

[0019] 4. The device is stable in operation, easy to implement, reliable and safe, can be used repeatedly and has good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a side view of the F-type clamp of the utility model;

[0021] Figure 2 This is a top view of the clamping plate of the utility model;

[0022] Figure 3 This is a top view of the sandbag of the utility model;

[0023] Figure 4 This is an isometric view of the fixture of the utility model in the installed state;

[0024] Among them, the clamp 1, the clamping plate 2, the sandbag 3, the engine air intake lip 4, the support seat 5, the threaded rod 6, the upper clamping block 7, the lower clamping block 8, the first curved splint 9, the second curved splint 10, the first strip splint 11, the second strip splint 12, the first curved sandbag 13, the second curved sandbag 14, the second strip sandbag 15, and the first strip sandbag 16. DETAILED DESCRIPTION

[0025] The present invention is further described below with reference to the following embodiments. The following are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0026] Provided is an inward-concave curved surface clamping fixture, comprising a clamp 1, a clamping plate 2 and a sandbag 3;

[0027] The F-type clamp 1 includes a support base 5, a threaded rod 6, an upper clamping block 7, and a lower clamping block 8; the upper clamping block is connected to the clamping plate 2, and the lower clamping block is connected to the engine intake lip 4. By adjusting the threaded rod 6, the distance between the upper clamping block 7 and the lower clamping block 8 is adjusted so that the F-type clamp has a clamping capacity;

[0028] The clamping plate 2 includes a first curved clamping plate 9, a second curved clamping plate 10, a first strip clamping plate 11, and a second strip clamping plate 12. The first curved clamping plate 9, the second curved clamping plate 10, the first strip clamping plate 11, and the second strip clamping plate 12 can be connected end to end to form a ring. The clamping plate can evenly transmit the clamping force of the F-shaped clamp 1 to the sandbag 3, so that the sandbag 3 is evenly and tightly pressed against the engine intake lip 4.

[0029] The sandbags 3 include a first curved sandbag 13, a second curved sandbag 14, a first strip sandbag 16, and a second strip sandbag 15. The first curved sandbag 13, the second curved sandbag 14, the first strip sandbag 16, and the second strip sandbag 15 can be connected end to end to form a ring. The amount of sand in the sandbags is adapted to the size of the engine intake lip 4, and the sandbags can fill the entire inward curved surface of the engine intake lip 4.

[0030] There are multiple clips 1, and the multiple clips can provide a clamping force between the engine air intake lip 4 and the clamping plate.

[0031] The clip 1 is a G-type clip.

[0032] The clamp includes a semi-enclosed support seat 5, a threaded rod 6, an upper clamping block 7 and a lower clamping block 8; the upper clamping block 7 is fixedly connected to the threaded rod, the semi-enclosed support seat 5 is provided with a threaded hole, the threaded rod 6 is rotatably fitted in the threaded hole, the upper clamping block corresponds to the clamping flat plate 2, and the lower clamping block corresponds to the engine intake lip 4. By adjusting the threaded rod 6 to adjust the distance between the upper clamping block 7 and the lower clamping block 8, the F-type clamp has clamping ability.

[0033] The electric heating device is required to be tightly bonded to a fixed position on the sunken surface of the engine intake lip and maintain a force of 5N for 4 hours to ensure that the glue between the electric heating device and the sunken surface of the engine intake lip is solidified and there is no hollowing or warping.

[0034] The first step is to fill the sandbag with 2 / 3 of sand according to its volume, ensuring that the sand is evenly distributed in the bag;

[0035] The second step is to clean the electric heater and the inner curved surface of the engine intake lip, apply Chemlok 233X adhesive, and bond the two according to the predetermined position.

[0036] The third step is to place the sandbag into the sunken surface of the engine intake lip to fix the electric heating device, and fill the sandbag with sand, ensuring that the sand is evenly distributed through vibration during the filling process.

[0037] Step 4: Install the clamping plate on top of the sandbag in a direction perpendicular to the normal line of the air inlet lip and press the sandbag tightly;

[0038] The fifth step is to screw the clamp so that the upper and lower clamping blocks are at an appropriate distance. Install the clamp so that the upper clamping block contacts the clamping plate and the lower clamping plate contacts the engine intake lip. Tighten the screw to ensure that the clamping plate and the sandbag make the electric heating device fit tightly against the sunken surface of the engine intake lip.

[0039] Step 6: After 4 hours, remove the clamps, clamping plate and sandbags in reverse order according to the above steps.

[0040] It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical terms and scientific terms) have the same meaning as the general understanding of those skilled in the art in the field to which the present invention belongs. It should also be understood that terms such as those defined in general dictionaries should be understood to have a meaning consistent with that in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as such here. The specific embodiments described above further explain the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A recessed curved surface clamping tool, characterized by: Includes clamps, holding plates and sandbags; The clamp includes a support base, a threaded rod, an upper clamping block, and a lower clamping block; the upper clamping block is connected to the clamping plate, and the lower clamping block is connected to the engine intake lip. By adjusting the threaded rod, the distance between the upper clamping block and the lower clamping block can be adjusted to enable the F-type clamp to have a clamping capacity; The clamping plate includes a first arc-shaped clamping plate, a second arc-shaped clamping plate, a first strip clamping plate, and a second strip clamping plate. The first arc-shaped clamping plate, the second arc-shaped clamping plate, the first strip clamping plate, and the second strip clamping plate can be connected end to end to form a ring. The clamping plate can evenly transmit the clamping force of the clamp to the sandbag, so that the sandbag is evenly and tightly pressed against the lip of the engine intake duct. The sandbags include a first curved sandbag, a second curved sandbag, a first strip sandbag, and a second strip sandbag. The first curved sandbag, the second curved sandbag, the first strip sandbag, and the second strip sandbag can be connected end to end to form a ring. The amount of sand in the sandbags is adapted according to the size of the engine intake lip. The sandbags can fill the entire indented curved surface of the engine intake lip. There are a plurality of clips, and the plurality of clips can provide a clamping force between the engine air inlet lip and the clamping plate.

2. The inward-curved surface clamping fixture according to claim 1, characterized in that: The clip is an F-type clip or a G-type clip.

3. The inward-curved surface clamping fixture according to claim 1, characterized in that: The clamp includes a semi-enclosed support seat, a threaded rod, an upper clamping block and a lower clamping block; the upper clamping block is fixedly connected to the threaded rod, the semi-enclosed support seat is provided with a threaded hole, the threaded rod is rotatably fitted in the threaded hole, the upper clamping block corresponds to the clamping flat plate, and the lower clamping block corresponds to the engine air intake lip. By adjusting the threaded rod to adjust the distance between the upper clamping block and the lower clamping block, the F-type clamp has clamping ability.

4. The inward-curved surface clamping fixture according to claim 1, characterized in that: The clamping plate is installed in a direction perpendicular to the normal direction of the engine inlet lip and finally presses on the sandbag; the clamp transmits force to the clamping plate and the engine inlet lip by tightening the bolts.

5. The inward-curved surface clamping fixture according to claim 3, characterized in that: The contact surfaces of the upper clamping block and the lower clamping block are provided with a flexible material layer.

6. The inward-curved surface clamping fixture according to claim 1, characterized in that: After the electric heating device is bonded to the engine intake lip, it is pressed tightly onto the sunken curved surface of the engine intake lip through sandbags. The sand is shaken to ensure that it is evenly distributed and the surface is flat, reducing the gaps between the sand and ensuring uniform force transmission.

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