CN201125921Y - Pretension device of large diameter bolt connection - Google Patents
Pretension device of large diameter bolt connection Download PDFInfo
- Publication number
- CN201125921Y CN201125921Y CNU2007201383410U CN200720138341U CN201125921Y CN 201125921 Y CN201125921 Y CN 201125921Y CN U2007201383410 U CNU2007201383410 U CN U2007201383410U CN 200720138341 U CN200720138341 U CN 200720138341U CN 201125921 Y CN201125921 Y CN 201125921Y
- Authority
- CN
- China
- Prior art keywords
- chock
- bolt
- large diameter
- pretension
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The present invention provides a pretightening device connected by large diameter bolt, which includes a outside beam, a chock for filling nut, a pretightening nut, a internal beam, a chock for filling bolt and a pretightening bolt. By using relative position change of the chocks of which inclined plane is matched to enlarge connection distance of the bolt, large diameter bolt connection pretightening between mechanical accessories is realized. The device of the present invention, which adapted for large diameter bolt connection of various heavy machine accessories, has advantages that structure is simple, operation method is easy, time, labor force and capital are saved, and additional tool is not needed.
Description
Technical field
The utility model belongs to mechanical connecting device, establishes especially to relate to a kind of pre-tightening apparatus that is applicable to that large diameter bolt connects.
Background technique
On heavy machinery, often need use some large diameter bolt classes and carry out the connection of two above parts, pretension needs very big moment when using large diameter bolt to connect for these parts, and the manpower pretension can not be accomplished.At present, way commonly used is to utilize dedicated hydraulic equipment pretension, perhaps uses special large-scale spanner, utilizes mechanical force to affect one of spanner to bring in pretension.This two kinds of methods required ad hoc be equipped with, the operation more complicated, tool using is more, and capital consumption is bigger, and especially its efficient is lower under the few situation of link quantity, and it is bigger that operation consumes human and material resources.
Summary of the invention
The purpose of this utility model is intended to overcome the shortcoming of prior art, sets up a kind of manually pretension, and is time saving and energy saving, simple in structure, the pre-tightening apparatus that maneuverable large diameter bolt connects.
The utility model is achieved in that
The pre-tightening apparatus that large diameter bolt connects is characterized in that: comprise outer beam 1, loading nut chock 2, pre-load nut 3, inner beam 4, adorn chock 5, the pretension bolt 6 of bolt; Described inner beam 1 and outer beam 4 pairings all are provided with mesopores 10 in the middle of beam 1 and the inner beam 4 outside, and king-bolt 11 is loaded between the connected piece and outside in beam 1 and inner beam 4 mesopores 10; Described outer beam 1 is provided with the face that cooperates with chock 2 and chock 5 with the both sides of inner beam 4, wherein: on the face that cooperates on the outer beam 1 is the inclined-plane, the face that cooperates on the inner beam 4 is to face directly, constitute a pair of chock by the chock 2 of a loading nut and the chock 5 of a dress bolt, chock is contained in the middle of inner beam 1 and the outer beam 4, pass circular hole in the middle of the chock respectively with pretension bolt 6, and be contained in pre-load nut 3 in the hole slot of chock 2 end faces, and with pretension bolt 6 removable wedge that matches.
The utility model owing to the variation of the relative position between the chock that cooperates with the inclined-plane enlarges the connection distance of bolt, thereby realizes that the large diameter bolt between the mechanical parts connects pretension compared with the prior art.And have the following advantages: simple in structure, operating method is simple, saves time, and saves manpower, and the saving fund does not need extra professional tool.Be applicable to that the large diameter bolt between the part of various heavy machineries connects.
Description of drawings
Fig. 1 is the assembling schematic representation of the pre-tightening apparatus of the utility model large diameter bolt connection;
Fig. 2 is the sectional arrangement drawing of the pre-tightening apparatus of the utility model large diameter bolt connection;
Fig. 3 is the plan view of pre-tightening apparatus China and foreign countries beam;
Fig. 4 is the plan view of pre-tightening apparatus China and foreign countries beam;
Fig. 5 is A-A master's sectional view of pre-tightening apparatus China and foreign countries beam;
Fig. 6 is the plan view of inner beam in the pre-tightening apparatus;
Fig. 7 is the plan view of inner beam in the pre-tightening apparatus;
Fig. 8 is the plan view of inner beam in the pre-tightening apparatus.
Embodiment
Below in conjunction with description of drawings the utility model embodiment.
As depicted in figs. 1 and 2, the pre-tightening apparatus assembling schematic representation of the utility model large diameter bolt connection; The pre-tightening apparatus that large diameter bolt connects comprises the chock 2 of outer beam 1, two loading nuts, two pre-load nuts 3, inner beam 4, two chocks of adorning bolt 5, two pretension bolts 6; Described inner beam 1 and outer beam 4 pairings all are provided with mesopores 10 in the middle of inner beam 1 and outer beam 4, king-bolt 11 is loaded on and reaches between the connected piece 12 outside in the beam 1 and inner beam 4 mesopores 10; As Fig. 3, the figure of inner beam in Fig. 4 and the pre-tightening apparatus shown in Figure 5, with Fig. 6, the figure of inner beam in Fig. 7 and the pre-tightening apparatus shown in Figure 8, described outer beam 1 is provided with the face that cooperates with chock 2 and chock 5 with the both sides of inner beam 4, wherein: on the face that cooperates on the outer beam 1 is inclined-plane 101, the face that cooperates on the inner beam 4 is to face 401 directly, the chock 5 of the chock 2 of a loading nut and a dress bolt constitutes a pair of chock, there are two pairs of chocks to be contained in the middle of outer beam 1 and the inner beam 4, two pretension bolts 6 pass respectively in the middle circular hole of two chocks, 3 decibels of two pre-load nuts are contained in the hole slot of chock 2 end faces, and match with two pretension bolts 6.
Described pretension bolt latch 7 one ends are sleeved on pretension bolt 6 ends, and the other end is fixed on the outer beam 1 with screw and packing ring 8,9.
As depicted in figs. 1 and 2, the pre-tightening apparatus that the utility model large diameter bolt connects, when needing pretension, tighten two pretension bolts 6 and pre-load nut 3 respectively, chock is all to mesopore 11 medial movement, because outer beam 1 contacts with the inclined-plane with chock, the distance in outer beam 1 and the beam between 4 is enlarged by the inclined-plane, the connection distance of link 12 king-bolts 10 is corresponding widening also, the stressed purpose that reaches pretension of nut.Artificial screw-down torque is amplified to the tractive force of 2 bolts by pretension bolt 6, by the inclined-plane of four chocks tractive force is expanded to the pretightening force of king-bolt 10 then, because every cover pre-tightening apparatus has four chocks, less and unlikely the damaging by pressure of pressure on each cleat engagement surface of branch load, pretension bolt 6 ends become hexagon, lock by cover latch 7 in the above, the opposite side of latch is fixed on the girder locks.
Claims (2)
1, the pre-tightening apparatus that connects of a kind of large diameter bolt is characterized in that: comprise outer beam (1), loading nut chock (2), pre-load nut (3), inner beam (4), adorn chock (5), the pretension bolt (6) of bolt; Described outer beam (1) and inner beam (4) pairing, all be provided with mesopore (10) in the middle of beam (1) and the inner beam (4) outside, outer beam (1) is provided with the face that cooperates with chock (2) and chock (5) with the both sides of inner beam (4), wherein: it is the inclined-plane that outer beam (1) is gone up on the face that cooperates, it is to face directly that inner beam (4) is gone up the face that cooperates, constitute a pair of chock by the chock (2) of a loading nut and the chock (5) of a dress bolt, it is middle with inner beam (4) that chock is contained in outer beam (1), pass the middle circular hole of chock respectively with pretension bolt (6), be contained in pre-load nut (3) in the hole slot of chock (2) end face, and with pretension bolt (6) removable wedge that matches.
2, the pre-tightening apparatus of large diameter bolt connection according to claim 1 is characterized in that: also comprise pretension bolt latch (7), screw (8) and packing ring (9); Described pretension bolt latch one end is sleeved on pretension bolt (6) end, and the other end is fixed on the outer beam (1) with screw and packing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201383410U CN201125921Y (en) | 2007-12-19 | 2007-12-19 | Pretension device of large diameter bolt connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201383410U CN201125921Y (en) | 2007-12-19 | 2007-12-19 | Pretension device of large diameter bolt connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201125921Y true CN201125921Y (en) | 2008-10-01 |
Family
ID=39999390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201383410U Expired - Lifetime CN201125921Y (en) | 2007-12-19 | 2007-12-19 | Pretension device of large diameter bolt connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201125921Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485138A (en) * | 2014-10-09 | 2016-04-13 | 遵义遵宏螺杆厂 | Pre-tightening bolt assembly |
-
2007
- 2007-12-19 CN CNU2007201383410U patent/CN201125921Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105485138A (en) * | 2014-10-09 | 2016-04-13 | 遵义遵宏螺杆厂 | Pre-tightening bolt assembly |
| CN105485138B (en) * | 2014-10-09 | 2019-12-20 | 遵义遵宏螺杆厂 | Pre-tightening bolt assembly |
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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: 20081001 |