CN2714202Y - Diameter variable screw thread pair connecting device - Google Patents
Diameter variable screw thread pair connecting device Download PDFInfo
- Publication number
- CN2714202Y CN2714202Y CN 200420069917 CN200420069917U CN2714202Y CN 2714202 Y CN2714202 Y CN 2714202Y CN 200420069917 CN200420069917 CN 200420069917 CN 200420069917 U CN200420069917 U CN 200420069917U CN 2714202 Y CN2714202 Y CN 2714202Y
- Authority
- CN
- China
- Prior art keywords
- screw thread
- thread pair
- diameter variable
- dedendum
- reducing
- 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
Links
Abstract
The utility model relates to a diameter variable screw thread pair connecting device, comprising a middle standing pillar, a head beam, a diameter variable nut, a base and a connection stud; the middle standing pillar, fixed through the connection stud and the diameter variable nut, is arranged between the head beam and the base; the internal screw-thread of the diameter variable screw thread pair is a diameter variable nut with higher dedendum as well as conical dedendum path, and the external screw-thread is a stud with circle arc dedendum and the hardening treated tooth surface; when the crew thread pair receives a bigger alternating impact load, due to the heightener of the dedendum deformation, which enables the screw thread pair in good self locking performance, the mechanical linkage in high intensity without looseness, and the effective length of screw thread pair engagement is added. The utility model has the advantages of simple structure, low cost, high intensity mechanical linkage, visible self locking performance; the ability to endure the alternating impact load enhances more than three times.
Description
Technical field
The utility model belongs to forging press coupling mechanism technology, particularly a kind of pull-down forging press be used to be connected and fixed reducing screw thread pair coupling arrangement of entablature.
Background technology
At present, the common screw thread pair that adopts is as the mechanical attachment parts, but this thread joined structure, owing to add the accumulated error in man-hour, make axial effective screwing length short, the unbalance stress of each tooth, reduced mechanical attachment intensity, and locking property is poor, loosening easily.Carry out high accuracy processing if adopt high-strength alloy material double thread pair, processing cost height not only, the mechanical attachment that has does not for example satisfy requirement yet, the middle standing pillar of novel forging machinery 3000T pull-down forging press, when work, bear bigger alternating shock load, adopt the screw thread pair connection of ordinary construction can not satisfy instructions for use, and be subjected to the restriction of press structure space, therefore need project organization compactness, linking intensity height, screw thread pair that locking property is good, satisfy the needs that pull-down forging press entablature connects with base high strength.
The utility model content
The purpose of this utility model is to connect the technical problem that exists in order to solve existing pull-down forging press screw thread pair, provides a kind of simple in structure, processing cost is low, linking intensity is high and locking property is good change through the screw thread pair coupling arrangement.
The utility model comprises middle standing pillar, entablature, the reducing nut, base, connect double-screw bolt, entablature is provided with upper ram, lower ram is fixed on above the base, middle standing pillar is arranged between entablature and the base, be fixedly connected by connecting double-screw bolt and reducing nut, the internal thread of described reducing screw thread pair is that tooth root increases, tooth root dia is the reducing nut of Yuan Hu Cone shape, with external screw thread be the circular arc tooth root, the double-screw bolt of flank of tooth cure process is when screw thread pair bears bigger alternating shock load, because the distortion of increasing tooth root, make the screw thread pair self-locking property good, mechanical attachment intensity height is avoided connecting and is become flexible, and increased the effective screwing length of screw thread pair.
The utlity model has You Dian such as simple in structure, that cost is low, mechanical attachment intensity height and self-locking property effect are remarkable, bear the alternate load ability and improve more than 2 times.
Description of drawings
Fig. 1 is a kind of structural representation of reducing screw thread pair coupling arrangement;
Fig. 2 is the structural representation of reducing screw thread pair internal thread;
Fig. 3 is the externally threaded structural representation of reducing screw thread pair;
Among the figure: 1 connects double-screw bolt, 2 reducing nuts, 3 entablatures, 4 upper rams, 5 middle standing pillars, 6 lower rams, 7 bases.
The specific embodiment
As shown in the figure, further specify the organization plan of the present utility model and the course of work in conjunction with example.
As shown in Figure 1,3000T pull-down forging press reducing screw thread pair coupling arrangement, this device comprises middle standing pillar 5, entablature 3, reducing nut 2, base 7, connects double-screw bolt 1, upper ram 4 is arranged on the entablature 3, lower ram 6 be fixed on base 7 above, middle standing pillar 5 is arranged between entablature 3 and the base 7, and is fixedly connected by connecting double-screw bolt 1 and reducing nut 2 respectively.Shown in Fig. 2 and 3, the internal thread of reducing screw thread pair is that tooth root increases, tooth root dia is the reducing nut of circle arc Cone shape, and the external screw thread that connects double-screw bolt 1 two ends is that circular arc tooth root, the flank of tooth are through hard rolling processing processing.When the 3000T forging press was worked, the connection double-screw bolt and the reducing nut of reducing screw thread pair bore bigger alternating shock load, because the tooth root of reducing nut is to bear according to screw thread that the axial force analysis is designed to increase gradually, tooth root dia is the circular arc taper.When screw thread pair was connected and fixed, the tooth root of internal thread was high more, and then the distortion of thread is also big more, therefore, not only increased the effective screwing length of screw thread pair, and screw thread pair self-locking performance effect is remarkable, not loosening, mechanical attachment intensity height has improved the stability and the reliability of the work of 3000T forging press.
Claims (2)
1, a kind of reducing screw thread pair coupling arrangement, it comprises middle standing pillar, entablature, base, and entablature is provided with upper ram, and lower ram is fixed on above the base, it is characterized in that, also comprises the reducing spiral shell
Connect double-screw bolt, middle standing pillar is arranged between entablature and the base, is fixedly connected by connecting double-screw bolt and reducing nut.
2, a kind of reducing screw thread pair coupling arrangement as claimed in claim 1 is characterized in that, the internal thread of described reducing screw thread pair is that tooth root increases, tooth root dia is the nut of circle arc Cone shape, and external screw thread is the double-screw bolt of circular arc tooth root, flank of tooth cure process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420069917 CN2714202Y (en) | 2004-07-22 | 2004-07-22 | Diameter variable screw thread pair connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420069917 CN2714202Y (en) | 2004-07-22 | 2004-07-22 | Diameter variable screw thread pair connecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2714202Y true CN2714202Y (en) | 2005-08-03 |
Family
ID=34873811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420069917 Expired - Lifetime CN2714202Y (en) | 2004-07-22 | 2004-07-22 | Diameter variable screw thread pair connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2714202Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301812C (en) * | 2004-07-22 | 2007-02-28 | 沈阳工业学院 | Forge press reducing thread connecting device and its design method |
-
2004
- 2004-07-22 CN CN 200420069917 patent/CN2714202Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301812C (en) * | 2004-07-22 | 2007-02-28 | 沈阳工业学院 | Forge press reducing thread connecting device and its design method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201908932U (en) | Self-locking locknut assembly | |
| CN108533601A (en) | A kind of self-locking screw | |
| CN202149125U (en) | Self-locking locknut assembly | |
| CN105179434B (en) | A kind of elastic anti-seismic stop nut | |
| CN2714202Y (en) | Diameter variable screw thread pair connecting device | |
| CN208106921U (en) | The single side fastening bolt of replaceable anti-vertically and horizontally bidirectional load | |
| CN204437030U (en) | A kind of high strength nut | |
| CN201180722Y (en) | High-strength large hex bolt for steel structure | |
| CN204716710U (en) | One turns over riveting self-locking nut | |
| CN208686783U (en) | A kind of anti-loosening bolt of electromechanics | |
| CN205977976U (en) | Novel screw bolt and nut | |
| CN214304770U (en) | Short ending screw fastener | |
| CN107725566A (en) | Check bolt nut structure assembly | |
| CN201496372U (en) | Riveting shaft self-locking nut with lining plate | |
| CN220015764U (en) | Optional formula fastening bolt | |
| CN201874958U (en) | Locking nut | |
| CN201582278U (en) | Self-locking bolt | |
| CN206144950U (en) | Bolt group with locking function | |
| CN203114845U (en) | Symmetrical prepressing type anti-loosing screw nut assembly | |
| CN205908592U (en) | Novel irregular bolt | |
| CN111409040A (en) | Device for quickly assembling double-end stud | |
| CN202768586U (en) | Bolt for automobile fastening | |
| CN214945639U (en) | Hexagon bolt | |
| CN217481736U (en) | Novel nut | |
| CN213064288U (en) | Anti-damage high-strength bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20040722 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |