CN210371492U - Spring screw - Google Patents
Spring screw Download PDFInfo
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- CN210371492U CN210371492U CN201921258992.2U CN201921258992U CN210371492U CN 210371492 U CN210371492 U CN 210371492U CN 201921258992 U CN201921258992 U CN 201921258992U CN 210371492 U CN210371492 U CN 210371492U
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- bolt
- spring
- sleeve
- positioning sleeve
- guide
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Abstract
The utility model discloses a spring screw, which comprises a bolt, a spring, a guide sleeve, a cover die positioning sleeve fixed on an upper die, a guide nut, a bottom die positioning sleeve fixed on a lower die and a U-shaped bolt; the bolt comprises a bolt cap, a connecting section without threads and a threaded connecting section with threads, the connecting section is positioned between the bolt cap and the threaded connecting section, and the outer diameter of the threaded connecting section is larger than that of the connecting section; the guide sleeve is arranged in the cover die positioning sleeve, U-shaped bolt holes are radially formed in the guide sleeve and the cover die positioning sleeve, and the U-shaped bolts are inserted into the U-shaped bolt holes; the bolt is inserted into the guide sleeve, and the connecting section is positioned in the U-shaped bolt; the spring is sleeved on the bolt, one end of the spring is abutted against the bolt cap, and the other end of the spring is sleeved on the guide sleeve and abutted against the end face of the cover die positioning sleeve; the guide nut is detachably arranged in the bottom die positioning sleeve. The spring screw has the advantages of simple structure, convenience in installation and replacement of easily damaged parts.
Description
Technical Field
The utility model relates to a spring screw technical field.
Background
In the production process of the tubular pile, the upper die and the lower die need to be locked by spring screws so as to avoid the defects of slurry leakage and the like of the tubular pile.
When the spring screw locks and loosens the upper die and the lower die of the tubular pile, parts such as a bolt, a spring, a nut and the like of the spring screw are parts which are easy to damage, so that the spring screw is simple in structure and convenient to mount, and meanwhile, quick-wear parts can be conveniently replaced, and the problem to be solved in the field is solved.
SUMMERY OF THE UTILITY MODEL
The utility model provides a spring screw has solved that current spring screw structure is complicated, the installation is inconvenient, is not convenient for carry out the problem that vulnerable part changed simultaneously.
The utility model discloses a technical means as follows:
a spring screw comprises a bolt, a spring, a guide sleeve, a cover die positioning sleeve fixed on an upper die, a guide nut, a bottom die positioning sleeve fixed on a lower die and a U-shaped bolt;
the bolt comprises a bolt cap, a connecting section without threads and a threaded connecting section with threads, the connecting section is positioned between the bolt cap and the threaded connecting section, and the outer diameter of the threaded connecting section is larger than that of the connecting section;
the guide sleeve is arranged in the cover die positioning sleeve, U-shaped bolt holes are radially formed in the guide sleeve and the cover die positioning sleeve, and the U-shaped bolts are inserted into the U-shaped bolt holes;
the bolt is inserted into the guide sleeve, and the connecting section is positioned in the U-shaped bolt;
the spring is sleeved on the bolt, one end of the spring is abutted to the bolt cap, and the other end of the spring is sleeved on the guide sleeve and abutted to the end face of the cover die positioning sleeve;
the guide nut is detachably mounted in the bottom die positioning sleeve.
Further, the inner hole of the cover die positioning sleeve is a polygonal hole, the guide sleeve comprises a sleeve fixing part and a spring fixing part, and the outer part of the sleeve fixing part is in a prism shape matched with the inner hole of the cover die positioning sleeve.
Furthermore, the inner hole of the bottom die positioning sleeve is a polygonal hole, the outer portion of the guide nut is prism-shaped and matched with the inner hole of the bottom die positioning sleeve, a U-shaped bolt hole is formed in the lower portion of the bottom die positioning sleeve, and a U-shaped bolt used for axially limiting the guide nut in the bottom die positioning sleeve is arranged in the U-shaped bolt hole.
Further, still be equipped with the shaft shoulder between bolt cap and the linkage segment, the shaft shoulder includes spring butt portion and spring joint portion, the pot head that the spring is in the bolt cap is in on the spring joint portion and its terminal surface with the terminal surface butt of spring butt portion.
Furthermore, an oil guide groove is further formed in the inner hole wall of the guide sleeve.
Furthermore, the end part of the bolt cap is also provided with a cone frustum type guide surface.
Further, the outer portions of the cover die positioning sleeve and the bottom die positioning sleeve are cylindrical.
Compared with the prior art, the spring screw have following beneficial effect: the spring screw has the advantages of simple structure, convenience in installation and capability of conveniently replacing the bolt, the spring and/or the guide sleeve.
Drawings
Fig. 1 is a structural diagram of a spring screw disclosed by the present invention;
fig. 2 is a cross-sectional view of a spring screw according to the present disclosure;
FIG. 3a is a structural view of a bolt;
FIG. 3b is a left side view of FIG. 3 a;
FIG. 4a is a schematic view of a guide sleeve;
FIG. 4b is a cross-sectional view of the guide sleeve;
FIG. 4c is a top view of FIG. 4 a;
FIG. 5a is a block diagram of a cover mold locating sleeve;
FIG. 5b is a top view of FIG. 5 a;
FIG. 6 is a block diagram of the guide sleeve and the cover mold locating sleeve assembled together;
FIG. 7a is a view showing a structure of a bottom mold positioning sleeve;
FIG. 7b is a top view of FIG. 7 a;
FIG. 7c is a view showing the structure of the bottom die positioning sleeve with a U-shaped pin inserted therein;
FIG. 7d is a schematic view showing the ends of the pins being bent after the U-shaped plug pins are inserted into the bottom die positioning sleeves;
FIG. 8a is a block diagram of a pilot nut;
FIG. 8b is a top view of FIG. 8 a;
fig. 9 is a structural diagram of the spring screw according to the present invention, wherein the spring screw is in a locked state.
In the figure: 1. bolt, 10, bolt cap, 100, guide surface, 11, linkage segment, 12, threaded connection section, 13, shaft shoulder, 130, spring butt portion, 131, spring joint portion, 2, spring, 3, guide sleeve, 30, U type bolt hole, 31, sleeve fixed part, 32, spring fixed part, 33, lead oil groove, 4, cover mould location sleeve, 5, guide nut, 6, die block location sleeve, 7, U type bolt, 80, go up the mould, 81, lower mould.
Detailed Description
As shown in fig. 1 and 2, the spring screw of the present invention comprises a bolt 1, a spring 2, a guiding sleeve 3, a cover mold positioning sleeve 4 fixed on an upper mold 80, a guiding nut 5, a bottom mold positioning sleeve 6 fixed on a lower mold 81, and a U-shaped bolt 7;
as shown in fig. 3a and 3b, the bolt 1 comprises a bolt cap 10, a connecting section 11 without threads and a threaded connecting section 12 with threads, wherein the connecting section 11 is located between the bolt cap 10 and the threaded connecting section 12, the outer diameter of the threaded connecting section 12 is larger than that of the connecting section 11, and preferably, the threads on the threaded connecting section 12 are rolled;
the guide sleeve 3 is arranged in the cover die positioning sleeve 4, U-shaped bolt holes 30 are radially formed in the guide sleeve 3 and the cover die positioning sleeve 4, and the U-shaped bolts 7 are inserted into the U-shaped bolt holes 30;
the bolt 1 is inserted into the guide sleeve 3, the connecting section 11 is positioned in the U-shaped bolt 7, the distance between two pins of the U-shaped bolt is larger than the outer diameter of the connecting section but smaller than the outer diameter of the threaded connecting section, when the bolt is inserted into the guide sleeve, the bolt can axially move in the guide sleeve, and simultaneously, the U-shaped bolt limits the bolt in the guide sleeve and cannot be completely pulled out of the guide sleeve because the outer diameter of the threaded connecting section is larger than the distance between the two pins of the U-shaped bolt;
the spring 2 is sleeved on the bolt 1, one end of the spring 2 is abutted against the bolt cap 10, and the other end of the spring 2 is sleeved on the guide sleeve 3 and abutted against the end part of the cover die positioning sleeve 4;
When the spring screw is used, the cover die positioning sleeve and the bottom die positioning sleeve are respectively welded on an upper die and a lower die, the guide nut is installed in the bottom die positioning sleeve, the guide sleeve is arranged in the cover die positioning sleeve, the spring sleeve is sleeved on the guide sleeve, the bolt is inserted into the positioning sleeve and downwards compresses the spring, then, the U-shaped bolt is inserted into the U-shaped bolt hole in the guide sleeve and the cover die positioning sleeve, and the spring screw is used for fixedly connecting the guide sleeve and the cover die positioning sleeve and limiting the bolt and the guide sleeve.
When using the spring screw in the upper and lower mould of concrete pile, the threaded part of bolt and guide nut needs long-term friction and extrusion, and consequently, bolt and guide nut are the part of damage more easily, and the spring is fatigue damage easily also simultaneously, the utility model discloses in, through U type bolt with guide sleeve, cover mould location sleeve and bolt fastening together, consequently when bolt and/or spring damage, can extract U type bolt from U type bolt hole, bolt, guide sleeve, cover mould location sleeve and spring can alternate segregation to in bolt and/or spring change. The guide nut is installed in the bottom die positioning sleeve through the U-shaped bolt, and when the guide nut is damaged, the U-shaped bolt can be pulled out to replace the guide nut.
Further, as shown in fig. 5a and 5b, the inner hole of the cover mold positioning sleeve 4 is a polygonal hole, which is decagonal as shown in the drawing, as shown in fig. 4a, 4b and 4c, the guide sleeve 3 includes a sleeve fixing portion 31 and a spring fixing portion 32, the outer portion of the sleeve fixing portion 31 is prism-shaped to match with the inner hole of the cover mold positioning sleeve 4, the sleeve fixing portion 31 of the guide sleeve 3 is installed in the cover mold positioning sleeve 4, since the inner hole of the cover mold positioning sleeve and the outer portion of the sleeve fixing portion are polygonal, the rotation of the guide sleeve in the cover mold positioning sleeve can be limited, the lower end of the spring is sleeved on the spring fixing portion, as shown in fig. 6, the structure of the guide sleeve installed in the cover mold positioning sleeve is shown.
Further, as shown in fig. 7a and 7b, the inner hole of the bottom die positioning sleeve 6 is a polygonal hole, which is octagonal in the drawing, as shown in fig. 8a and 8b, the outer portion of the guide nut 6 is prismatic to match with the inner hole of the bottom die positioning sleeve, the inner hole of the bottom die positioning sleeve and the outer portion of the guide nut are polygons that match with each other to limit the relative rotation of the guide nut in the bottom die positioning sleeve, in this embodiment, a U-shaped bolt hole 30 is provided at the lower portion of the bottom die positioning sleeve 6, the U-shaped bolt hole 30 is provided with a U-shaped bolt for axially limiting the guide nut in the bottom die positioning sleeve, as shown in fig. 7c and 7d, after the U-shaped bolt is inserted into the U-shaped bolt hole, the end portions of the two pins of the U-shaped bolt are bent to prevent the U-shaped bolt from sliding off.
Further, as shown in fig. 3a, a shaft shoulder 13 is further disposed between the bolt cap 10 and the connecting section 11, the shaft shoulder 13 includes a spring abutting portion 130 and a spring clamping portion 131, when the spring is sleeved on the bolt, one end of the spring 2, which is located at the bolt cap 10, is sleeved on the spring clamping portion 131, an end face of the spring abuts against an end face of the spring abutting portion 130, and the other end of the spring is sleeved on a spring fixing portion of the guide sleeve, so that the spring is guaranteed against deflection in a compression process. Further, as shown in fig. 9, when the bolt is connected with the guide nut, the end face of the spring clamping portion abuts against the upper end face of the guide sleeve, that is, the interaction position between the bolt and the guide sleeve is close to the connecting section, and the stress performance of the bolt cap and the connecting section of the bolt is improved.
When the bolt is connected with leading nut, the terminal surface of spring joint portion and guide sleeve's up end butt, when the bolt rotated, the terminal surface of spring joint portion and guide sleeve's up end can produce looks mutual friction and extrusion, and after long-time the use, guide sleeve's up end has certain wearing and tearing, the utility model discloses a spring screw is after guide sleeve wearing and tearing, also can be convenient extract in order to carry out guide sleeve's change through U type bolt.
Furthermore, as shown in fig. 4b, an oil guiding groove 33 is further provided on the inner hole wall of the guiding sleeve 3, and lubricating oil can be injected into the guiding sleeve through the oil guiding groove for lubricating the spring screw.
Further, as shown in fig. 3a, the end of the bolt cap 10 is further provided with a frustum cone-shaped guide surface 100, which is provided to facilitate the connection with the wind cannon and the connection or separation of the bolt with the guide nut through the wind cannon.
Further, the cover die positioning sleeve 4 and the bottom die positioning sleeve 6 are cylindrical, so that concrete slurry splashed onto the spring screws can be conveniently cleaned, and meanwhile, damage to workers can be reduced due to the cylindrical structure.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A spring screw, characterized by: the die comprises a bolt, a spring, a guide sleeve, a cover die positioning sleeve fixed on an upper die, a guide nut, a bottom die positioning sleeve fixed on a lower die and a U-shaped bolt;
the bolt comprises a bolt cap, a connecting section without threads and a threaded connecting section with threads, the connecting section is positioned between the bolt cap and the threaded connecting section, and the outer diameter of the threaded connecting section is larger than that of the connecting section;
the guide sleeve is arranged in the cover die positioning sleeve, U-shaped bolt holes are radially formed in the guide sleeve and the cover die positioning sleeve, and the U-shaped bolts are inserted into the U-shaped bolt holes;
the bolt is inserted into the guide sleeve, and the connecting section is positioned in the U-shaped bolt;
the spring is sleeved on the bolt, one end of the spring is abutted to the bolt cap, and the other end of the spring is sleeved on the guide sleeve and abutted to the end face of the cover die positioning sleeve;
the guide nut is detachably mounted in the bottom die positioning sleeve.
2. The spring screw of claim 1, wherein: the inner hole of the cover die positioning sleeve is a polygonal hole, the guide sleeve comprises a sleeve fixing part and a spring fixing part, and the outer part of the sleeve fixing part is prismatic and matched with the inner hole of the cover die positioning sleeve.
3. The spring screw of claim 1, wherein: the inner hole of the bottom die positioning sleeve is a polygonal hole, the outer portion of the guide nut is prism-shaped and matched with the inner hole of the bottom die positioning sleeve, a U-shaped bolt hole is formed in the lower portion of the bottom die positioning sleeve, and a U-shaped bolt used for axially limiting the guide nut in the bottom die positioning sleeve is arranged in the U-shaped bolt hole.
4. A spring screw according to any one of claims 1 to 3, wherein: still be equipped with the shaft shoulder between bolt cap and the linkage segment, the shaft shoulder includes spring butt portion and spring joint portion, the pot head that the spring is in the bolt cap is in spring joint portion is last and its terminal surface with the terminal surface butt of spring butt portion.
5. The spring screw of claim 4, wherein: and an oil guide groove is also formed in the inner hole wall of the guide sleeve.
6. The spring screw of claim 1, wherein: the end part of the bolt cap is also provided with a frustum cone-shaped guide surface.
7. The spring screw of claim 1, wherein: the outer parts of the cover die positioning sleeve and the bottom die positioning sleeve are cylindrical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921258992.2U CN210371492U (en) | 2019-08-05 | 2019-08-05 | Spring screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921258992.2U CN210371492U (en) | 2019-08-05 | 2019-08-05 | Spring screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210371492U true CN210371492U (en) | 2020-04-21 |
Family
ID=70248958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921258992.2U Active CN210371492U (en) | 2019-08-05 | 2019-08-05 | Spring screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210371492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576403A (en) * | 2020-12-01 | 2021-03-30 | 一汽解放汽车有限公司 | Sealing structure and vehicle |
-
2019
- 2019-08-05 CN CN201921258992.2U patent/CN210371492U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112576403A (en) * | 2020-12-01 | 2021-03-30 | 一汽解放汽车有限公司 | Sealing structure and vehicle |
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