CN215950107U

CN215950107U - Combined shaft sleeve and structural strength measuring device

Info

Publication number: CN215950107U
Application number: CN202121185867.0U
Authority: CN
Inventors: 李素强
Original assignee: AVIC First Aircraft Institute
Current assignee: AVIC First Aircraft Institute
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2022-03-04
Anticipated expiration: 2031-05-28

Abstract

The utility model provides a combination axle sleeve and structural strength measuring device, including ears, round pin axle and interior axle sleeve, set up the first pinhole that supplies the round pin axle to pass on the ears, the diameter of first pinhole is greater than the round pin axle diameter, the outer anchor ring diameter of axle sleeve in the diameter more than or equal to of first pinhole, the both ends threaded connection of round pin axle has the combination thread bush, combination thread bush one end can insert in the first pinhole and offset with interior axle sleeve. Have the technical effect that can install fast to the interior axle sleeve.

Description

Combined shaft sleeve and structural strength measuring device

Technical Field

The application belongs to the technical field of structural strength tests, and particularly relates to a combined shaft sleeve and a structural strength measuring device.

Background

Many structural strength tests, the structural connections are single-double ear or single-double plate connections, and for convenience, single-double ear is used as a reference for such connections. The middle single ear needs to keep the middle or a position between two ears, the most common method is to add 2 inner shaft sleeves which are respectively arranged at two sides of the single ear, as shown in figure 1, a first inner shaft sleeve 4 needs to be inserted into a gap between a first double ear 2 and a first single ear 1, and then a first pin shaft 3 is inserted; however, because the middle connecting pin shaft is prevented from being bent too much, gaps between the single lug and the double lugs are small, 2 shaft sleeves are difficult to mount, and in actual use, one shaft sleeve is often mounted, and the other residual gap is too small, so that the mounting is more difficult. In addition, in use, if the single (double) lug is connected to a loaded servo actuator, the actuator is usually slowly operated, and the bolt shaft needs to be quickly inserted when the single (double) lug is quickly positioned, so that the shaft sleeve is more difficult to install between the single lug and the double lug. In addition, in the prior art, a plurality of sleeves are processed in advance and replaced on site according to feedback adjustment of a field test, but the workload is greatly increased, and the processed sleeves do not necessarily meet the feedback adjustment requirement of the field test. Therefore, how to quickly and accurately mount the inner shaft sleeve is a problem to be solved.

Disclosure of Invention

The application aims at providing a combination axle sleeve and structural strength measuring device to solve the problem of interior axle sleeve installation difficulty among the prior art.

The technical scheme of the application is as follows: a combined shaft sleeve comprises two lugs, a pin shaft and an inner shaft sleeve, wherein a first pin hole for the pin shaft to penetrate through is formed in each lug, the diameter of each first pin hole is larger than that of the pin shaft, the diameter of each first pin hole is larger than that of the outer ring surface of the inner shaft sleeve, combined threaded sleeves are connected to the two ends of each pin shaft in a threaded mode, and one end of each combined threaded sleeve can be inserted into the corresponding first pin hole and abuts against the corresponding inner shaft sleeve.

Preferably, the combined threaded sleeve is provided with a first external thread with a diameter larger than that of the first pin hole, the first external thread is provided with a large nut, the diameter of the inner annular surface of the large nut is larger than that of the first pin hole, and the large nut is in threaded fit with the first external thread.

Preferably, the two sides of the pin shaft are provided with connecting shafts with diameters smaller than that of the pin shaft, the connecting shafts are provided with second external threads, the inner ring surface of the combined thread sleeve is provided with first internal threads, and the first internal threads are in thread fit with the second external threads.

Preferably, the length of the inner shaft sleeve is greater than or equal to the distance between the inner wall surface on the double-lug side and the single-lug knuckle bearing and is smaller than the distance between the outer wall surface on the double-lug side and the single-lug knuckle bearing.

The utility model provides a structural strength measuring device, includes actuator, sensor, the piston rod of sensor and actuator links to each other, the sensor with the aforesaid the ears of combination axle sleeve link to each other, the monaural and the testpieces of combination axle sleeve link to each other.

The utility model provides a combination axle sleeve through the diameter increase with the first pinhole of ears to make interior axle sleeve can enter into first pinhole, then can insert the first pinhole in at the both ends screw-thread fit of round pin axle and the combination thread bush of axle sleeve looks butt in first, drive the joint bearing that interior axle sleeve removed and the monaural through rotatory combination thread bush and offset, realize rapid Assembly.

Drawings

In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the utility model.

FIG. 1 is a schematic cross-sectional view of a background art;

FIG. 2 is a schematic overall structure diagram according to an embodiment of the present application;

FIG. 3 is a schematic cross-sectional view of an embodiment of the present application;

FIG. 4 is a schematic diagram of an exploded structure according to an embodiment of the present application;

FIG. 5 is a schematic overall structure diagram of a second embodiment of the present application;

fig. 6 is a schematic diagram of an explosive structure according to the second embodiment of the present application. 1-the first single ear of the ear,

2-the first two ears,

3-a first pin roll, which is provided with a first pin roll,

4-a first inner shaft sleeve and a second inner shaft sleeve,

5-the single ear is used for the first time,

6-the two ears are used as the ears,

7-a pin roll, wherein the pin roll is fixed on the upper part of the frame,

8-the inner shaft sleeve is arranged in the inner shaft sleeve,

9-a combined threaded sleeve is arranged on the upper portion of the screw,

10-a large nut, wherein the nut is a nut,

11-the first pin hole,

12-the second pin hole,

13-a screw-on segment, which is,

14-a fixed section of the device,

15-assembling the section to be assembled,

16-the first external thread of the first screw thread,

17-a second external thread, which is,

18-a first internal thread, which is,

19-a joint bearing, wherein the joint bearing is arranged on the bearing,

20-a connecting shaft, wherein the connecting shaft is provided with a connecting hole,

21-an actuator, the actuator being,

22-the sensors-are arranged in such a way that,

23-test piece.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.

A combined shaft sleeve is shown in fig. 2, 3 and 4 and comprises a double lug 6, a pin shaft 7 and an inner shaft sleeve 8, wherein the double lug 6 is provided with a first pin hole 11 for the pin shaft 7 to pass through, the diameter of the first pin hole 11 is larger than that of the pin shaft 7, the diameter of the first pin hole 11 is larger than or equal to the diameter of the outer ring surface of the inner shaft sleeve 8, two ends of the pin shaft 7 are in threaded connection with combined threaded sleeves 9, and one end of each combined threaded sleeve 9 is inserted into the corresponding first pin hole 11 and abuts against the inner shaft sleeve 8.

When the assembly of axle sleeve is carried out, install two interior axle sleeves 8 in two first pinhole 11 of ears 6 earlier, monaural 5 inserts 6 middles of ears, monaural 5 and interior axle sleeve 8 contactless this moment, round pin axle 7 passes interior axle sleeve 8, the second pinhole 12 of monaural 5, the first pinhole 11 of ears 6, then twist combination thread bush 9 at the both ends of round pin axle 7, it offsets with interior axle sleeve 8 to rotate combination thread bush 9, then continue to rotate combination thread bush 9, drive interior axle sleeve 8 and remove to monaural 5, until interior axle sleeve 8 pastes with the joint bearing 19 on the monaural 5, there is not the gap between interior axle sleeve 8 and the joint bearing 19 after the assembly, it is convenient accurate to install.

In the first embodiment, a combined shaft sleeve comprises a single lug 5, double lugs 6, a pin shaft 7, an inner shaft sleeve 8, a combined threaded sleeve 9 and a large nut 10.

The single lug 5 is located the intermediate position of ears 6, the single lug 5 sets up along same linear direction with ears 6, first pinhole 11 has been seted up on ears 6, the one end that single lug 5 inserted in ears 6 is equipped with joint bearing 19, be equipped with second pinhole 12 on the joint bearing 19, first pinhole 11 and the coaxial setting of second pinhole 12 and the diameter of second pinhole 12 is less than the diameter of first pinhole 11, round pin axle 7, interior axle sleeve 8, combination thread bush 9, big nut 10 sets up along the linear direction of perpendicular to single lug 5 and ears 6, and with the coaxial setting of first pinhole 11. The pin shaft 7 passes through a first pin hole 11 of the double lugs 6 and a second pin hole 12 of the single lug 5, the large nut 10 is positioned on the outer side of the double lugs 6, the combined threaded sleeve 9 is partially positioned on the outer side of the double lugs 6, part of the combined threaded sleeve is inserted into the double lugs 6, and the inner shaft sleeve 8 is positioned between the double lugs 6 and the single lug 5.

The diameter of the first pin hole 11 is larger than that of the pin shaft 7, meanwhile, the diameter of the first pin hole 11 is larger than or equal to that of the outer annular surface of the inner shaft sleeve 8, and the inner shaft sleeve 8 is sleeved on the pin shaft 7, so that the inner shaft sleeve 8 can be arranged between the double lugs 6 and the pin shaft 7.

The combined threaded sleeve 9 is in threaded fit with the pin shaft 7, and the diameter of one end of the combined threaded sleeve 9 is smaller than or equal to that of the first pin hole 11, so that one end of the combined threaded sleeve 9 can be inserted into the first pin hole 11 while the pin shaft 7 is in threaded fit. One end of the combined threaded sleeve 9 inserted into the first pin hole 11 is abutted to the inner shaft sleeve 8, and the inner shaft sleeve 8 can be driven to move along the linear direction of the pin shaft 7 by rotating the combined threaded sleeve 9.

The combined threaded sleeve 9 comprises a screwing section 13, a fixing section 14 and an assembling section 15, wherein the fixing section 14 is arranged between the screwing section 13 and the assembling section 15, and the screwing section 13 is of a hollow hexagonal prism structure so as to facilitate the screwing of the combined threaded sleeve 9 by a tool; the fixed section 14 is a hollow cylindrical structure, the assembling section 15 is a hollow cylindrical structure, and the diameter of the fixed section 14 is larger than that of the assembling section 15.

Preferably, the outer surface of the fixing section 14 is provided with a first external thread 16 with a diameter larger than that of the first pin hole 11, the fixing section 14 is provided with a large nut 10, the diameter of the inner annular surface of the large nut 10 is larger than that of the first pin hole 11, and the large nut 10 is in threaded fit with the fixing section 14. The combined thread bush 9 can be screwed on the double lugs 6 by rotating the big thread.

Preferably, the two sides of the pin shaft 7 are provided with connecting shafts 20 with a diameter smaller than that of the pin shaft 7, the connecting shafts 20 are provided with second external threads 17, and the combined thread bush 9 is provided with first internal threads 18 and is in thread fit with the second external threads 17. The arrangement of the connecting shaft 20 makes the connection between the combined threaded sleeve 9 and the pin 7 more stable.

The large nut 10 and the combined threaded sleeve 9 can adopt M2 or other adaptable matching threads, and the combined threaded sleeve 9 and the pin shaft 7 can adopt M1 or other adaptable matching threads.

Preferably, the length of the inner sleeve 8 is equal to or greater than the distance from the inner wall surface of the double lug 6 side to the knuckle bearing 19 of the single lug 5 and is less than the distance from the outer wall surface of the double lug 6 side to the knuckle bearing 19 of the single lug 5. The length design of inner sleeve 8 makes the equipment section 15 can insert in first pinhole 11 and offset with inner sleeve 8, and inner sleeve 8 can play stable support between ears 6 and monaural 5.

The assembling process of the combined shaft sleeve is as follows:

at present, two inner shaft sleeves 8 are preassembled in two pin holes of a double lug 6, a single lug 5 is inserted into the middle of the double lug 6, at the moment, the single lug 5 is not in contact with the inner shaft sleeves 8, a pin shaft 7 penetrates through the inner shaft sleeves 8, a first pin hole 11 of the double lug 6 and a second pin hole 12 of the single lug 5, two ends of the pin shaft 5 extend out from two sides of the double lug 6, then a combined threaded sleeve 9 is screwed in two connecting shafts 20 of the pin shaft 7, the combined threaded sleeve 9 is rotated, an assembling section 15 is abutted against the inner shaft sleeves 8, the combined threaded sleeve 9 is continuously rotated, the inner shaft sleeves 8 are extruded from the first pin holes 11 and move towards joint bearings 19 of the double lugs 6 by the assembling section 15 until the inner shaft sleeves 8 are abutted against the joint bearings 19, after the inner shaft sleeves 8 on two sides are respectively abutted against two sides of the joint bearings 19 accurately, the inner shaft sleeves 8 reach assembling positions, and no gap exists among the inner shaft sleeves 8, the single lug 5 and the double lug 6. Then, a large nut 10 is screwed into the fixing section 14 of the combined threaded sleeve 9, the combined threaded sleeve 9 and the double lugs 6 are fixed by screwing the large nut 10, and meanwhile, all positions of the combined shaft sleeve are mutually supported to finish stable fixing.

The utility model has the following advantages:

1. the inner shaft sleeve 8 is preassembled in the first pin holes 11 on the two sides of the double lugs 6, so that the problem of difficulty in installation caused by small gap between the single lug 5 and the double lugs 6 is solved.

2. The inner shaft sleeve 8 is adjusted after the pin shaft 7 is installed, and the problem that the inner shaft sleeve 8 cannot be installed due to dynamic penetration of the single lug 5 and the double lugs 6 of the actuator 21 is solved.

3. The axial distance of the inner shaft sleeve 8 is adjustable, and the on-site adjustment requirement that the positions of the shaft sleeves on the two sides of the single lug 5 are not fixed is met.

4. Interior axle sleeve 8 simple to operate, regulation convenience, the scene can carry out the multiple regulation, greatly promotes interior axle sleeve 8's installation and regulation efficiency, promotes work efficiency.

Second embodiment, a structural strength measuring device, as shown in fig. 5 and 6, includes an actuator 21, a sensor 22, and the combined bushing according to the first embodiment. The bottom of actuator 21 articulates there is the installation base, and sensor 22 installs on actuator 21's piston rod, and the ears 6 of combination axle sleeve link to each other with sensor 22 one side of keeping away from actuator 21, and the monaural 5 of combination axle sleeve links to each other with testpieces 23.

When the equipment of combination axle sleeve, now locate first pinhole 11 with interior axle sleeve 8 in, pressurize actuator 21, actuator 21's piston rod stretches out, drive ears 6 and remove to monaural 5, stop when first pinhole 11 is coaxial with second pinhole 12, then insert round pin axle 7, twist combination thread bush 9 and big nut 10 in proper order again, can realize the assembly of combination axle sleeve, simple to operate, the accuracy can measure test piece 23 more high-efficiently.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a combination axle sleeve, includes ears (6), round pin axle (7) and interior axle sleeve (8), set up first pinhole (11) that supply round pin axle (7) to pass on ears (6), its characterized in that: the diameter of the first pin hole (11) is larger than that of the pin shaft (7), the diameter of the first pin hole (11) is larger than or equal to that of the outer ring surface of the inner shaft sleeve (8), the two ends of the pin shaft (7) are in threaded connection with combined threaded sleeves (9), and one end of each combined threaded sleeve (9) can be inserted into the corresponding first pin hole (11) and abuts against the corresponding inner shaft sleeve (8).

2. The composite bushing of claim 1, wherein: the combined thread sleeve (9) is provided with a first external thread (16) with a diameter larger than that of the first pin hole (11), the first external thread (16) is provided with a large nut (10), the diameter of the inner annular surface of the large nut (10) is larger than that of the first pin hole (11), and the large nut (10) is in thread fit with the first external thread (16).

3. The composite bushing of claim 1, wherein: and connecting shafts (20) with the diameter smaller than that of the pin shafts (7) are arranged on two sides of the pin shafts (7), second external threads (17) are arranged on the connecting shafts (20), first internal threads (18) are arranged on the inner annular surface of the combined thread sleeve (9), and the first internal threads (18) are in thread fit with the second external threads (17).

4. The composite bushing of claim 1, wherein: the inner shaft sleeve is characterized by further comprising a single lug (5), wherein the length of the inner shaft sleeve (8) is larger than or equal to the distance from the inner wall surface on one side of the double lugs (6) to the knuckle bearing (19) of the single lug (5) and smaller than the distance from the outer wall surface on one side of the double lugs (6) to the knuckle bearing (19) of the single lug (5).

5. A structural strength measuring device comprising an actuator (21), a sensor (22), the sensor (22) being connected to a piston rod of the actuator (21), characterized in that: the sensor (22) is connected to the ears (6) of the combination hub as claimed in any of claims 1 to 4, and the ears (5) of the combination hub are connected to the test piece (23).