CN202851889U - Box body connection structure - Google Patents
Box body connection structure Download PDFInfo
- Publication number
- CN202851889U CN202851889U CN201220461656.XU CN201220461656U CN202851889U CN 202851889 U CN202851889 U CN 202851889U CN 201220461656 U CN201220461656 U CN 201220461656U CN 202851889 U CN202851889 U CN 202851889U
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- CN
- China
- Prior art keywords
- casket
- hole
- casket body
- shrinkage pool
- box body
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Abstract
The utility model provides a box body connection structure. The box body connection structure comprises a first box body, a second box body and a fastener, wherein a threaded hole is formed in the first box body, a through hole is formed in the second box body, and the fastener penetrates through the through hole and then is matched with the threaded hole. A first concave hole is formed at the opening end of the threaded hole, wherein the diameter of the first concave hole is larger than that of the threaded hole. One end of the through hole, close to a combination face of the first box body and the second box body, is provided with a second concave hole, wherein the diameter of the second concave hole is larger than that of the through hole. A locating sleeve used for locating the first box body and the second box body is sleeved on the fastener and placed in an empty cavity formed by enclosure of the first concave hole and the second concave hole. The box body connection structure is small in needed installation space size, and compact in installation structure.
Description
Technical field
The utility model relates to the aviation machine field, especially, relates to a kind of casket attachment structure.
Background technique
The accessory drive gear case is one of core component of aviation turboshaft engine, for improving power to weight ratio and the reliability of aviation turboshaft engine, the accessory drive gear case trends towards integrated design when design, so that its structure is compact as far as possible, the space that takies is as far as possible little, and weight is light as far as possible.The accessory drive gear case extracts power from the gas turbine rotor of motor, and the input gear of accessory drive gear case middle gear system and the central transmission that extracts power from gas turbine rotor are by employing spline joint transmitting torque between the dynamic bevel gear.Because the bevel gear rotating speed of transmission is up to 43000rpm, being connected between the casing that therefore requires the installation accessories driving gear and the casing of gas compressor installation gear has accurate location and reliably fastening, in order to guarantee spline on the accessory drive gear case middle gear and the spline good engagement on the gas compressor middle gear.
At present, generally adopt fastening screw trip bolt and locating stud acting in conjunction, carry out reliable fastening and accurate location in order to the casing that casing and the gas compressor of installation accessories driving gear are installed gear.
When the casing that adopts fastening screw trip bolt to be connected the installation accessories driving gear with locating stud is connected gear with gas compressor casing connects, owing to fastening screw trip bolt and locating stud all need independent installing space, so the spatial structure of the accessory drive gear case of prior art is large.
The model utility content
The utility model purpose is to provide the casket attachment structure that a kind of required installing space size is little, mounting structure is compact, install separately because of fastening screw trip bolt and locating stud to solve existing uni-drive gear box, so that the large technical problem of the spatial structure of uni-drive gear box.
For achieving the above object, according to an aspect of the present utility model, provide a kind of casket attachment structure, comprised the first casket body, the second casket body and fastening piece, wherein, be provided with tapped hole on the first casket body; Be provided with through hole on the second casket body, fastening piece cooperates with tapped hole after passing through hole;
The opening end of tapped hole is provided with diameter greater than the first shrinkage pool of the diameter of tapped hole;
An end of the junction plane of close the first casket body and the second casket body is provided with diameter greater than the second shrinkage pool of the diameter of through hole on the through hole;
Be arranged with on the fastening piece for the setting sleeve to the first casket body and the second casket body location, setting sleeve is positioned at the cavity that is enclosed to form by the first shrinkage pool and the second shrinkage pool.
Further, setting sleeve is cylinder type, comprise with the first paragraph of the first shrinkage pool interference fit, with the second segment of the second shrinkage pool Spielpassung.
Further, the internal diameter of setting sleeve is greater than the external diameter of fastening piece.
Further, setting sleeve also comprises the stopping step section that is outer gibbosity between first paragraph and second segment, and an end of the junction plane of close the first casket body and the second casket body is provided be used to the counterbore that holds stopping step section in the first shrinkage pool.
Further, counterbore is to the height of the junction plane of the first casket body and the second casket body height greater than stopping step section.
Further, be provided with the steel-wire screw-socket that the internal thread with tapped hole adapts in the tapped hole.
The utlity model has following beneficial effect:
Casket attachment structure of the present utility model, the setting sleeve that the first casket body and the second casket body are positioned is set in for fastening fastening piece, even setting sleeve and fastening piece are arranged in the same mounting hole, thereby required installing space size when effectively reducing setting sleeve and fastening piece are installed makes mounting structure compacter.
Except purpose described above, feature and advantage, the utility model also has other purpose, feature and advantage.The below is described in further detail the utility model with reference to figure.
Description of drawings
The accompanying drawing that consists of the application's a part is used to provide further understanding of the present utility model, and illustrative examples of the present utility model and explanation thereof are used for explaining the utility model, do not consist of improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the utility model preferred embodiment.
Marginal data
1, the first casket body; 11, tapped hole; 111, the first shrinkage pool; 112, counterbore; 2, the second casket body; 21, through hole; 211, the second shrinkage pool; 3, setting sleeve; 31, stopping step section; 4, steel-wire screw-socket; 5, fastening piece.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
Referring to Fig. 1, according to a kind of casket attachment structure of the present utility model, comprise the first casket body 1, the second casket body 2 and fastening piece 5, wherein, be provided with tapped hole 11 on the first casket body 1; Be provided with through hole 21 on the second casket body 2, fastening piece 5 cooperates with fastening the first casket body 1 and the second casket body 2 with tapped hole 11 after passing through hole 21.The opening end of tapped hole 11 is provided with diameter greater than the first shrinkage pool 111 of the diameter of tapped hole 11; An end of the junction plane of close the first casket body 1 and the second casket body 2 is provided with diameter greater than the second shrinkage pool 211 of the diameter of through hole 21 on the through hole 21; Be arranged with on the fastening piece 5 for the setting sleeve 3 to the first casket body 1 and the second casket body 2 location, setting sleeve 3 is positioned at the cavity that is enclosed to form by the first shrinkage pool 111 and the second shrinkage pool 211.Casket attachment structure of the present utility model, the setting sleeve 3 that the first casket body 1 and the second casket body 2 are positioned is set in for fastening fastening piece 5, even setting sleeve 3 and fastening piece 5 are arranged in the same mounting hole, thereby required installing space size when effectively reducing setting sleeve 3 and fastening piece 5 are installed makes mounting structure compacter.
Preferably, be set in the internal diameter of the setting sleeve 3 on the fastening piece 5 greater than the external diameter of fastening piece 5, make fastening piece 5 can easily pass setting sleeve 3, and can not produce interference to setting sleeve 3.
Further, setting sleeve 3 is cylinder type, comprise continuous first paragraph, second segment, in order to guarantee that the first casket body 1 and the second casket body 2 can make things convenient for decomposing by registration, the first shrinkage pool 111 interference fit of the first paragraph of setting sleeve 3 and the first casket body 1, the second shrinkage pool 211 Spielpassung of the second segment of setting sleeve 3 and the second casket body 2.
Because second segment and the second shrinkage pool 211 Spielpassung of setting sleeve 3, in order to prevent that setting sleeve 3 is along the axial motion of the second shrinkage pool 211, affect the location accuracy of setting sleeve 3, so the stopping step section 31 that is outer gibbosity is set between the first paragraph of setting sleeve 3 and second segment, and is provided be used to the counterbore 112 that holds this stopping step section 31 at an end of the interior junction plane near the first casket bodies 1 and the second casket body 2 of the first shrinkage pool 111.After the installation, when setting sleeve 3 during along 211 axial motion of the second shrinkage pool, because the diameter of stopping step section 31 is greater than the diameter of the second shrinkage pool 211, so stopping step section 31 will be at first and the end contact of the second shrinkage pool 211 opening ends, because the second shrinkage pool 211 opening end end faces are spacing to stopping step section 31, thereby make setting sleeve 3 can not continue to move upward, thereby can guarantee the location accuracy of setting sleeve 3.
Preferably, fit well for the junction plane that makes the first casket body 1 and the second casket body 2, place the height of the stopping step section 31 in the counterbore 112 should be less than the height of the junction plane of counterbore 112 to first casket bodies 1 and the second casket body 2.
In the utility model, be the intensity of the tapped hole 11 that improves the first casket body 1, in tapped hole 11, be provided with the steel-wire screw-socket 4 that the internal thread with tapped hole 11 adapts.The fastening piece 5 that is arranged with setting sleeve 3 passes behind the through hole 21 steel-wire screw-socket 4 interior with being arranged on tapped hole 11 and cooperates, thereby improves the first casket body 1 and the second casket body 2 fastening strength.
As can be seen from the above description, the utility model the above embodiments have realized following technique effect:
Casket attachment structure of the present utility model, the setting sleeve that the first casket body and the second casket body are positioned is set in for fastening fastening piece, even setting sleeve and fastening piece are arranged in the same mounting hole, thereby required installing space size when effectively reducing setting sleeve and fastening piece are installed makes mounting structure compacter.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. a casket attachment structure comprises the first casket body (1), the second casket body (2) and fastening piece (5), wherein, is provided with tapped hole (11) on described the first casket body (1); Be provided with through hole (21) on described the second casket body (2), described fastening piece (5) cooperates with described tapped hole (11) after passing described through hole (21), it is characterized in that,
The opening end of described tapped hole (11) is provided with diameter greater than first shrinkage pool (111) of the diameter of described tapped hole (11); Upper close described the first casket body (1) of described through hole (21) is provided with diameter greater than second shrinkage pool (211) of the diameter of described through hole (21) with an end of the junction plane of described the second casket body (2);
Be arranged with on the described fastening piece (5) for the setting sleeve (3) to described the first casket body (1) and described the second casket body (2) location, described setting sleeve (3) is positioned at the cavity that is enclosed to form by described the first shrinkage pool (111) and described the second shrinkage pool (211).
2. casket attachment structure according to claim 1 is characterized in that, described setting sleeve (3) is cylinder type, comprise with the first paragraph of described the first shrinkage pool (111) interference fit, with the second segment of described the second shrinkage pool (211) Spielpassung.
3. casket attachment structure according to claim 2 is characterized in that, the internal diameter of described setting sleeve (3) is greater than the external diameter of described fastening piece (5).
4. casket attachment structure according to claim 2, it is characterized in that, described setting sleeve (3) also comprises the stopping step section (31) that is outer gibbosity between described first paragraph and described second segment, is provided be used to the counterbore (112) that holds described stopping step section (31) near the end of described the first casket body (1) with the junction plane of described the second casket body (2) in described the first shrinkage pool (111).
5. casket attachment structure according to claim 4 is characterized in that, described counterbore (112) is to the height of the junction plane of described the first casket body (1) and described the second casket body (2) height greater than described stopping step section (31).
6. casket attachment structure according to claim 1 is characterized in that, is provided with the steel-wire screw-socket (4) that the internal thread with described tapped hole (11) adapts in the described tapped hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220461656.XU CN202851889U (en) | 2012-09-11 | 2012-09-11 | Box body connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220461656.XU CN202851889U (en) | 2012-09-11 | 2012-09-11 | Box body connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851889U true CN202851889U (en) | 2013-04-03 |
Family
ID=47983094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220461656.XU Expired - Lifetime CN202851889U (en) | 2012-09-11 | 2012-09-11 | Box body connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202851889U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267057A (en) * | 2013-05-13 | 2013-08-28 | 山东高唐智泰金马量仪科技有限公司 | Lock nut, lock structure using lock nut and method for mounting lock structure |
| CN105041995A (en) * | 2015-08-21 | 2015-11-11 | 重庆长安汽车股份有限公司 | Installing structure for idler wheel |
| CN112377598A (en) * | 2020-11-11 | 2021-02-19 | 中国航发湖南动力机械研究所 | Connecting structure for integrated accessory transmission case and accessory transmission gear box |
-
2012
- 2012-09-11 CN CN201220461656.XU patent/CN202851889U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267057A (en) * | 2013-05-13 | 2013-08-28 | 山东高唐智泰金马量仪科技有限公司 | Lock nut, lock structure using lock nut and method for mounting lock structure |
| CN103267057B (en) * | 2013-05-13 | 2015-06-03 | 山东高唐智泰金马量仪科技有限公司 | Lock nut, lock structure using lock nut and method for mounting lock structure |
| CN105041995A (en) * | 2015-08-21 | 2015-11-11 | 重庆长安汽车股份有限公司 | Installing structure for idler wheel |
| CN112377598A (en) * | 2020-11-11 | 2021-02-19 | 中国航发湖南动力机械研究所 | Connecting structure for integrated accessory transmission case and accessory transmission gear box |
| CN112377598B (en) * | 2020-11-11 | 2022-07-08 | 中国航发湖南动力机械研究所 | Connecting structure for integrated accessory transmission case and accessory transmission gear box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |