CN210625917U

CN210625917U - Bolt tightness testing device of aircraft engine

Info

Publication number: CN210625917U
Application number: CN201922131153.0U
Authority: CN
Inventors: 刘涛
Original assignee: Qingdao Campus of Naval Aviation University of PLA
Current assignee: Qingdao Campus of Naval Aviation University of PLA
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-05-26
Anticipated expiration: 2029-12-03

Abstract

The utility model discloses a bolt tightness testing device of an aircraft engine, wherein the middle ends of two side parts inside a testing bracket are respectively provided with a guiding chute, the inner side of the guide sliding chute is in fit connection with a guide sliding block, the end part of the inner side of the guide sliding block is fixedly connected with a movable plate, the top end of the movable plate is fixedly connected with a movable connecting seat, the top end of the connecting ball head is fixedly connected with a movable screw rod, the movable screw rod passes through the fixed nut and is fixedly connected with the manual rotary table at the top end of the movable screw rod, the movable screw rod ensures that the movable path of the movable plate and the movable connecting seat does not deviate when the movable plate and the movable connecting seat move at the inner side of the test bracket through the guide chute and the guide slide block, thereby ensuring that the test bolt can only be stretched in the vertical direction when the movable screw rod is stretched with the movable frame and the test bolt, and further, the test bolt is prevented from generating axial rotation when being stretched, so that the test precision of the test bolt is reduced.

Description

Bolt tightness testing device of aircraft engine

Technical Field

The utility model relates to an aircraft engine accessories technical field specifically is an aircraft engine's bolt-up degree testing arrangement.

Background

With the important function of the bolt in the structural connection of the aircraft engine, the tightness of the bolt of the aircraft engine needs to be tested before the bolt is installed so as to ensure the normal use of the bolt after connection, and the tightness test of the bolt mainly comprises the torque, the torque coefficient, the axial pretightening force and the tensile strength after screwing of the bolt;

the existing testing device is lack of a component for guiding and limiting the stretching path of the stretching component in the testing process in the actual testing process, so that the stretching component often influences the testing result of the bolt due to the position deviation of the bolt when the stretching component takes the bolt to stretch, and the deviation of the testing result is further caused to be overlarge.

Disclosure of Invention

The utility model provides an aircraft engine's bolt-up degree testing arrangement can effectively solve and propose current testing arrangement among the above-mentioned background art because lack the tensile route to tensile subassembly in the test procedure and lead to spacing subassembly in actual test procedure, lead to tensile subassembly often can lead to causing the influence to the test result of bolt because of the skew of bolt when taking the bolt to stretch, further cause the too big problem of test result deviation.

In order to achieve the above object, the utility model provides a following technical scheme: a bolt tightness testing device of an aircraft engine comprises a fixed base, wherein a testing support is fixedly mounted in the middle of the top end of the fixed base, guide sliding grooves are formed in the middle ends of two side edge portions in the testing support, guide sliding blocks are connected to the inner sides of the guide sliding grooves in a matching mode, movable plates are fixedly connected to the inner side ends of the guide sliding blocks, movable connecting seats are fixedly connected to the top ends of the movable plates, movable cavities are formed in the movable connecting seats, connecting ball heads are movably embedded in the movable cavities, movable lead screws are fixedly connected to the top ends of the connecting ball heads, fixing nuts are fixedly mounted at the connecting positions of the movable lead screws and the testing support, and the movable lead screws penetrate through the fixing nuts and are fixedly connected;

the portable electronic device comprises a movable plate and is characterized in that a movable frame is fixedly connected with the bottom end of the movable plate, a containing groove is formed in the middle of the inner side of the movable frame, a pressure sensor is installed in the containing groove in an embedded mode, a through hole is formed in the middle of the inner side of the pressure sensor, a detection bolt is embedded into the through hole, a gasket is arranged at the top of the detection bolt and at the joint of the movable frame, a fixing frame is fixedly installed at the top end of the fixing base and the position corresponding to the movable frame, and a connecting nut.

Preferably, the mounting bolts are embedded into the two side edges of the fixed base, the bottom ends of the two sides of the test support are provided with the dismounting bottom plates, and the dismounting bottom plates are fixedly connected with the fixed base through the fastening screws.

Preferably, the movable frame edge part is connected with connecting wire, connecting wire passes movable frame and storage tank and links to each other with pressure sensor, and connecting wire keeps away from pressure sensor one end and links to each other with signal acquisition equipment, signal acquisition equipment one end is passed through connecting wire and is linked to each other with detection terminal, pressure sensor, signal acquisition equipment and detection terminal's input all with external power source's output electric connection.

Preferably, the detection bolt is in fit connection with the connecting nut through threads, and the position, located on the inner side of the fixing frame, of the bottom of the detection bolt is in fit connection with the limiting nut through threads.

Preferably, the mounting slot has been seted up to unable adjustment base openly middle-end, fastening draw-in groove has all been seted up to the inside both sides limit end of mounting slot, the inside embedding of mounting slot is connected with the horizontal plate, the horizontal plate is through the fastening fixture block at its both ends and fastening draw-in groove between agree with and be connected, horizontal liquid column is installed in the positive middle part embedding of horizontal plate.

Preferably, the inner diameter of the fastening clamping groove is equal to the outer diameter of the fastening clamping block, and a fastening rubber sheet is arranged at the joint of the inner side end of the fastening clamping groove and the fastening clamping block.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model has the advantages of being scientific and reasonable in structure, convenience safe in utilization:

1. the movable path of the movable plate and the movable connecting seat does not deviate when the movable plate and the movable connecting seat move on the inner side of the test support through the guide sliding groove and the guide sliding block, so that the movable screw rod can ensure that the test bolt can only stretch in the vertical direction when the movable screw rod is used for stretching the movable frame and the test bolt, and the test bolt is prevented from being axially rotated when being stretched to reduce the test precision of the test bolt.

2. Can directly survey unable adjustment base's levelness behind the unable adjustment base installation through installation slot, fastening draw-in groove, horizontal plate, fastening fixture block and horizontal liquid column to this prevents that unable adjustment base from leading to the fact the influence to the actual test result of test bolt because of the slope of its mounted position after the installation, and horizontal plate and horizontal liquid column are easy to assemble.

3. Through the dismouting bottom plate be convenient for carry out quick fixed connection between unable adjustment base and the test support, utilize construction bolt to be convenient for carry out quick convenient fixed connection between unable adjustment base and the detection mesa simultaneously, make people more convenient when installing testing arrangement through the above, further make things convenient for people to dismantle the transport with testing arrangement.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a cross-sectional view of the present invention;

fig. 3 is a schematic view of the installation structure of the pressure sensor of the present invention;

FIG. 4 is a schematic view of the area A of FIG. 1 according to the present invention;

reference numbers in the figures: 1. a fixed base; 2. testing the bracket; 3. a guide chute; 4. a guide slider; 5. a movable plate; 6. a movable connecting seat; 7. a movable cavity; 8. connecting a ball head; 9. a movable screw rod; 10. fixing a nut; 11. a manual turntable; 12. a movable frame; 13. a containing groove; 14. a pressure sensor; 15. a through hole; 16. detecting the bolt; 17. a gasket; 18. a fixed mount; 19. a connecting nut; 20. installing a slot; 21. fastening a clamping groove; 22. a horizontal plate; 23. fastening the fixture block; 24. a horizontal liquid column; 25. installing a bolt; 26. and (6) disassembling and assembling the bottom plate.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Example (b): as shown in fig. 1-4, the utility model provides a technical scheme, a bolt tightness testing device of aircraft engine, including unable adjustment base 1, unable adjustment base 1 top middle part fixed mounting has test support 2, test support 2 both sides limit all is provided with the scale mark, make things convenient for the test process to refer to, test support 2 inside both sides limit middle end all seted up direction spout 3, direction spout 3 inboard agrees with and is connected with direction slider 4, direction slider 4 inboard end fixedly connected with fly leaf 5, fly leaf 5 top fixedly connected with movable connecting seat 6, movable connecting seat 6 is inside seted up movable cavity 7, movable cavity 7 inside imbeds swing joint and connects bulb 8, connect bulb 8 top fixedly connected with movable lead screw 9, the junction of movable lead screw 9 and test support 2 is fixedly mounted with fixation nut 10, movable lead screw 9 passes fixation nut 10 and its top manual carousel 11 fixed connection;

the bottom end of the movable plate 5 is fixedly connected with a movable frame 12, the middle part of the inner side of the movable frame 12 is provided with a containing groove 13, a pressure sensor 14 is embedded in the containing groove 13, the pressure sensor 14 is a gasket type bolt pressure sensor, the model of the pressure sensor 14 is LCM900, the edge part of the movable frame 12 is connected with a connecting wire, the connecting wire passes through the movable frame 12 and the containing groove 13 to be connected with the pressure sensor 14, one end of the connecting wire, far away from the pressure sensor 14, is connected with a signal acquisition device, one end of the signal acquisition device is connected with a detection terminal through the connecting wire, the connection between the pressure sensor 14 and an external test instrument is convenient, the middle part of the inner side of the pressure sensor 14 is provided with a through hole 15, a detection bolt 16 is embedded and connected in the through hole 15, a gasket 17 is arranged at the joint of the top of, the detection bolt 16 is in fit connection with the connecting nut 19 through threads, the position, located on the inner side of the fixing frame 18, of the bottom of the detection bolt 16 is in fit connection with the limiting nut through threads, connection between the detection bolt 16 and the connecting nut 19 is facilitated, meanwhile, the bottom of the detection bolt 16 is limited, and the connecting nut 19 is installed at the position, corresponding to the detection bolt 16, of the middle end of the top of the fixing frame 18.

Mounting bolts 25 are all installed in the equal embedding of fixed base 1 both sides limit portion, and dismouting bottom plate 26 is all installed to 2 both sides bottoms of test support, all through holding screw fixed connection between dismouting bottom plate 26 and the fixed base 1.

Mounting slot 20 has been seted up to unable adjustment base 1 positive middle-end, fastening slot 21 has all been seted up to the inside both sides limit end of mounting slot 20, the inside embedding of mounting slot 20 is connected with horizontal plate 22, horizontal plate 22 agrees with between fastening fixture block 23 and the fastening slot 21 through its both ends and is connected, fastening slot 21's internal diameter equals with fastening fixture block 23's external diameter, and fastening slot 21 inboard limit end is provided with the fastening rubber piece with fastening fixture block 23's junction, make between fastening fixture block 23 and the fastening slot 21 closely agree with after being connected more, horizontal liquid column 24 is installed in the positive middle part embedding of horizontal plate 22.

The utility model discloses a theory of operation and use flow: before actual testing, the bolt tightness testing device of the aircraft engine firstly carries out quick connection between the fixed base 1 and the detection table board through the mounting bolts 25, then the testing support 2 is connected with the fixed base 1 through the dismounting bottom plates 26 at the bottom ends of the two sides of the testing support, and meanwhile, the testing support 2 and the fixed base 1 are fixed through the fastening screws;

after the fixed base 1 and the test support 2 are both fixedly installed, the levelness of the fixed base 1 and the test support 2 is directly observed through a horizontal plate 22 and a horizontal liquid column 24 inside the installation slot 20, so that the fixed base 1 and the test support 2 are ensured not to be inclined after being installed;

when the levelness of the fixed base 1 and the test support 2 meets the standard, firstly, the bottom of the detection bolt 16 penetrates through the movable frame 12 and the pressure sensor 14 through threads, then the bottom of the detection bolt 16 penetrating through the movable frame 12 penetrates through a connecting nut 19 in the fixed frame 18 through threads, and a limiting nut is arranged on the outer side of the bottom of the detection bolt 16 to limit the position of the detection bolt 16, so that the detection bolt 16 is installed through the movable frame 12 and the fixed frame 18, after the detection bolt 16 is installed and connected, the pressure sensor 14 in the accommodating groove 13 is connected with external signal acquisition equipment and a detection terminal through a connecting lead, and the input ends of the pressure sensor 14, the signal acquisition equipment and the detection terminal are electrically connected with the output end of an external power supply;

during actual detection, the manual rotating disc 11 at the top of the testing support 2 is manually rotated, the movable lead screw 9 at the bottom end of the manual rotating disc 11 is driven to rotate in the fixed nut 10, so that the movable lead screw 9 is driven to move through the manual rotating disc 11, when the movable lead screw 9 moves upwards, the movable lead screw 9 drives the movable plate 5, the movable connecting seat 6 and the movable frame 12 at the bottom end of the movable lead screw to move upwards, the movable frame 12 further drives the detecting bolt 16 to move towards the top of the testing support 2, and when the detecting bolt 16 moves upwards, the gasket 17 at the bottom of the detecting bolt extrudes the pressure sensor 14 inside the movable frame 12, so that when the pressure sensor 14 detects a pressure signal, the pressure signal detected by the pressure sensor is transmitted to the signal collecting device, and the detection information is further transmitted to the detection terminal through the signal collecting device, which indicates that the detection method based on the pressure sensor 14 is the prior art, therefore, will not be described in detail;

in addition, during actual tensile detection, the rising position of the movable plate 5 can be referred through the scale marks on the two side parts of the test support 2, so that the test process is more convenient.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an aircraft engine's bolt-tightness testing arrangement, includes unable adjustment base (1), its characterized in that: a test bracket (2) is fixedly arranged in the middle of the top end of the fixed base (1), guide sliding grooves (3) are respectively arranged at the middle ends of the two side parts in the test bracket (2), the inner side of the guide chute (3) is in fit connection with a guide slide block (4), the end part of the inner side of the guide slide block (4) is fixedly connected with a movable plate (5), the top end of the movable plate (5) is fixedly connected with a movable connecting seat (6), a movable cavity (7) is arranged inside the movable connecting seat (6), a connecting ball head (8) is embedded and movably connected in the movable cavity (7), the top end of the connecting ball head (8) is fixedly connected with a movable screw rod (9), a fixed nut (10) is fixedly arranged at the joint of the movable screw rod (9) and the test bracket (2), the movable screw rod (9) penetrates through a fixed nut (10) and is fixedly connected with a manual turntable (11) at the top end of the fixed nut;

fly leaf (5) bottom fixedly connected with removes frame (12), storage tank (13) have been seted up at removal frame (12) inboard middle part, pressure sensor (14) have been installed in the inside embedding of storage tank (13), through-hole (15) have been seted up at pressure sensor (14) inboard middle part, embedded being connected with in through-hole (15) detects bolt (16), it is provided with gasket (17) with the junction that removes frame (12) to detect bolt (16) top, unable adjustment base (1) top corresponds position department fixed mounting with removal frame (12) and has mount (18), mount (18) top middle-end corresponds position department with detection bolt (16) and installs coupling nut (19).

2. The bolt tightness testing device of an aircraft engine according to claim 1, characterized in that: mounting bolts (25) are installed in all embedding of unable adjustment base (1) both sides limit portion, dismouting bottom plate (26) are all installed to test support (2) both sides bottom, all through holding screw fixed connection between dismouting bottom plate (26) and unable adjustment base (1).

3. The bolt tightness testing device of an aircraft engine according to claim 1, characterized in that: remove frame (12) limit portion and be connected with connecting wire, connecting wire passes and removes frame (12) and storage tank (13) and links to each other with pressure sensor (14), and connecting wire keeps away from pressure sensor (14) one end and links to each other with signal acquisition equipment, signal acquisition equipment one end is passed through connecting wire and is linked to each other with detection terminal, pressure sensor (14), signal acquisition equipment and detection terminal's input all with external power source's output electric connection.

4. The bolt tightness testing device of an aircraft engine according to claim 1, characterized in that: the detection bolt (16) is in fit connection with the connecting nut (19) through threads, and the position, located on the inner side of the fixing frame (18), of the bottom of the detection bolt (16) is in fit connection with the limiting nut through threads.

5. The bolt tightness testing device of an aircraft engine according to claim 1, characterized in that: the fixing base is characterized in that an installation slot (20) is formed in the middle of the front face of the fixing base (1), fastening clamping grooves (21) are formed in the side ends of the two sides of the inner portion of the installation slot (20), a horizontal plate (22) is connected in an embedded mode inside the installation slot (20), the horizontal plate (22) is connected with the fastening clamping grooves (21) in an embedded mode through fastening clamping blocks (23) at the two ends of the horizontal plate, and a horizontal liquid column (24) is installed in the middle of the front face of the horizontal plate (22) in an embedded mode.

6. The bolt tightness testing device of an aircraft engine according to claim 5, characterized in that: the inner diameter of the fastening clamping groove (21) is equal to the outer diameter of the fastening clamping block (23), and a fastening rubber sheet is arranged at the joint of the inner side end of the fastening clamping groove (21) and the fastening clamping block (23).