CN215847875U - Nut pretensioner - Google Patents
Nut pretensioner Download PDFInfo
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- CN215847875U CN215847875U CN202121532849.5U CN202121532849U CN215847875U CN 215847875 U CN215847875 U CN 215847875U CN 202121532849 U CN202121532849 U CN 202121532849U CN 215847875 U CN215847875 U CN 215847875U
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- nut
- ring
- rotating ring
- base
- sleeve head
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Abstract
The utility model discloses a nut pretensioner which comprises a base, wherein a round hole penetrating through the base in the vertical direction is formed in the base, and an open slot is formed in the round hole and is close to the front end of the base; a rotating ring is arranged in the round hole and is rotationally connected with the base; the inner ring of the rotating ring is detachably and fixedly connected with a sleeve head, an inner hole matched with the nut is formed in the sleeve head, and an inlet groove is formed in the rotating ring and the sleeve head at the position corresponding to the open groove; a gear ring is fixedly arranged on the outer ring of the rotating ring, a transmission gear set is also arranged in the base and is meshed with the gear ring of the rotating ring, a driving gear is arranged on the other side of the transmission gear set, and the driving gear is also meshed with the transmission gear set; the driving gear is also provided with a connecting part used for being connected with the driving part. The nut moving device is light and portable in whole, efficient and stable in operation, enables the nut to quickly move on the screw rod to finish the nut approaching stroke, can improve the construction speed and effect of a construction site, reduces labor intensity and improves efficiency.
Description
Technical Field
The utility model belongs to the technical field of construction and maintenance of electric power engineering, and particularly relates to a nut pretensioner.
Background
In the process of electric power engineering construction and maintenance, the screwing-in and screwing-out of the nut on the screw are often involved, and for the installation and the disassembly of the nut on the longer screw, the nut has a longer stroke (called as the nut approaching stroke) to move on the screw before the nut is screwed to a contact action part. For screwing the nut in the section of stroke, the electric wrench cannot operate due to the long length of the screw rod and can only be screwed manually. And because the space position that the screw rod is located is compacter, and manual spanner operation space is restricted, and operating efficiency receives the influence greatly.
Therefore, a nut pre-tightening tool is urgently needed, so that the nut can quickly move on the screw rod to finish the nut approaching stroke, and the crazy expansion efficiency is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a nut pretensioner.
In order to solve the technical problems, the utility model adopts the following technical scheme:
a nut pretensioner comprises a base, wherein a round hole penetrating through the base in the vertical direction is formed in the base, and an open slot is formed in the round hole and is close to the front end of the base; a rotating ring is arranged in the round hole and is rotationally connected with the base; the inner ring of the rotating ring is detachably and fixedly connected with a sleeve head, an inner hole matched with the nut is formed in the sleeve head, and an inlet groove is formed in the rotating ring and the sleeve head at the position corresponding to the open groove;
a gear ring is fixedly arranged on the outer ring of the rotating ring, a transmission gear set is also arranged in the base and is meshed with the gear ring of the rotating ring, a driving gear is arranged on the other side of the transmission gear set, and the driving gear is also meshed with the transmission gear set; the driving gear is also provided with a connecting part used for being connected with the driving part.
The driving gear is located at the rear end of the base.
The transmission gear set comprises two transmission gears which are respectively positioned at the left side and the right side of a connecting line of the circle centers of the driving gear and the rotating ring.
The connecting part is a square hole arranged at the axis of the driving gear, and the driving part is provided with a driving rod corresponding to the square hole.
The driving part is a rechargeable battery type electric hand drill, and a driving rod corresponding to the square hole is installed on the electric hand drill.
The bottom of the inner ring of the rotating ring is provided with an annular convex edge protruding inwards, the inner ring of the rotating ring is provided with positioning bulges arranged circumferentially above the convex edge, and the positioning bulges extend axially along the inner ring of the rotating ring; the lower end of the sleeve head is provided with a step groove matched with the positioning protrusion, the outer ring of the sleeve head is attached to the inner ring of the rotating ring, and the outer ring of the sleeve head is correspondingly provided with a positioning groove corresponding to the positioning protrusion.
The positioning bulge is made of magnetic material and is connected with the sleeve head in a magnetic attraction mode.
The utility model has the beneficial effects that:
when the nut-driving device works, the sleeve head corresponding to the nut is selected, then the sleeve head is connected with the rotating ring, then the base is sleeved on the screw rod through the open slot and the inlet slot and moves to the nut along the screw rod, the sleeve head is connected with the nut, then the driving part is connected with the driving gear, the rotation of the driving gear is transmitted to the rotating ring through the transmission gear group, the rotating ring rotates to drive the sleeve head to rotate, and further the nut is driven to rotate, so that the nut quickly runs through the nut approaching stroke on the screw rod, and the working efficiency is improved.
The utility model has the advantages of light weight, high efficiency and stable operation, and can improve the construction speed and effect of a construction site, reduce the labor intensity and improve the efficiency. The driving part drives the gear to transmit the gear to the rotating ring and the sleeve head to rotate, so that the torque of the bolt is balanced, the local stress cannot be generated, and the bolt is prevented from being broken due to uneven stress.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a top view of the present invention
Fig. 4 is a left side view of the present invention.
Detailed Description
The following detailed description of embodiments of the utility model refers to the accompanying drawings.
As shown in fig. 1 to 4, the nut pretensioner of the utility model comprises a base 1, wherein the base is of an ellipse-like structure with a large front end and a small rear end, a round hole penetrating through the base in the vertical direction is arranged at the front end of the base 1, and an open slot 2 is arranged on the round hole and close to the front end of the base; a rotating ring 3 is arranged in the round hole, and the rotating ring 3 is rotatably connected with the base; the detachable fixedly connected with sleeve head 4 of inner circle of rotatory ring 3 is equipped with on the sleeve head 4 with nut complex hole, corresponds the department with the open slot on rotatory ring 3 and the sleeve head 4 and is equipped with the entering groove.
A gear ring is fixedly arranged on the outer ring of the rotating ring 3, a transmission gear set 5 is further arranged in the base 1, the transmission gear set 5 is in meshed connection with the gear ring of the rotating ring 3, a driving gear 6 is arranged on the other side of the transmission gear set 5, and the driving gear 6 is also in meshed connection with the transmission gear set 5; the driving gear 6 is also provided with a connecting part 7 for connecting with the driving part.
In this embodiment, the driving gear 6 is located at the rear end of the base 1, and the transmission gear set 5 includes two transmission gears respectively located at the left and right sides of the connection line of the centers of the driving gear 6 and the rotating ring 3.
In this embodiment, the connecting portion 7 is a square hole provided at the axis of the driving gear, and the driving portion is provided with a driving rod corresponding to the square hole. The drive part selects a rechargeable battery type electric hand drill, the drive force gear of the rechargeable battery type electric hand drill is adjustable, and the electric hand drill is provided with a drive rod corresponding to the square hole.
In this embodiment, in order to realize the detachable fixed connection between the sleeve head 4 and the inner ring of the rotating ring 3, the following scheme is adopted: the bottom of the inner ring of the rotating ring 3 is provided with an annular convex edge protruding inwards, the inner ring of the rotating ring 3 is provided with positioning bulges arranged circumferentially above the convex edge, and the positioning bulges extend axially along the inner ring of the rotating ring; the lower end of the sleeve head 4 is provided with a step groove matched with the positioning bulge, the outer ring of the sleeve head 4 is attached to the inner ring of the rotating ring, and the outer ring of the sleeve head 4 is correspondingly provided with a positioning groove corresponding to the positioning bulge.
Preferably, the positioning protrusion is made of magnetic material and is magnetically connected with the sleeve head 4.
When the nut-driving type electric hand drill is in work, the sleeve head 4 corresponding to the nut is selected, then the sleeve head 4 is connected with the rotating ring 3, then the base 1 is sleeved on the screw rod through the open slot 2 and the entering slot and moves to the nut along the screw rod, the sleeve head 4 is connected with the nut, then the driving rod mounted on the electric hand drill is connected with the square hole of the driving gear 6, the rotation of the driving gear 6 is transmitted to the rotating ring 3 through the transmission gear set 5, the rotating ring 3 rotates to drive the sleeve head 4 to rotate, and further the nut is driven to rotate, so that the nut can quickly finish the nut approaching stroke on the screw rod, and the working efficiency is improved.
The utility model has the advantages of light weight, high efficiency and stable operation, and can improve the construction speed and effect of a construction site, reduce the labor intensity and improve the efficiency. The driving part drives the gear to transmit the gear to the rotating ring and the sleeve head to rotate, so that the torque of the bolt is balanced, the local stress cannot be generated, and the bolt is prevented from being broken due to uneven stress.
Although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made thereto without departing from the spirit and scope of the utility model and it is intended to cover in the claims the utility model as defined in the appended claims.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the scope of the present invention.
Claims (7)
1. A nut pretensioner, comprising: the device comprises a base, wherein a round hole penetrating through the base in the vertical direction is formed in the base, and an open slot is formed in the round hole and is close to the front end of the base; a rotating ring is arranged in the round hole and is rotationally connected with the base; the inner ring of the rotating ring is detachably and fixedly connected with a sleeve head, an inner hole matched with the nut is formed in the sleeve head, and an inlet groove is formed in the rotating ring and the sleeve head at the position corresponding to the open groove;
a gear ring is fixedly arranged on the outer ring of the rotating ring, a transmission gear set is also arranged in the base and is meshed with the gear ring of the rotating ring, a driving gear is arranged on the other side of the transmission gear set, and the driving gear is also meshed with the transmission gear set; the driving gear is also provided with a connecting part used for being connected with the driving part.
2. A nut pretensioner according to claim 1, wherein: the driving gear is located at the rear end of the base.
3. A nut pretensioner according to claim 2, wherein: the transmission gear set comprises two transmission gears which are respectively positioned at the left side and the right side of a connecting line of the circle centers of the driving gear and the rotating ring.
4. A nut pretensioner according to any of claims 1 to 3, wherein: the connecting part is a square hole arranged at the axis of the driving gear, and the driving part is provided with a driving rod corresponding to the square hole.
5. The nut pretensioner according to claim 4, wherein: the driving part is a rechargeable battery type electric hand drill, and a driving rod corresponding to the square hole is installed on the electric hand drill.
6. A nut pretensioner according to any of claims 1 to 3, wherein: the bottom of the inner ring of the rotating ring is provided with an annular convex edge protruding inwards, the inner ring of the rotating ring is provided with positioning bulges arranged circumferentially above the convex edge, and the positioning bulges extend axially along the inner ring of the rotating ring; the lower end of the sleeve head is provided with a step groove matched with the positioning protrusion, the outer ring of the sleeve head is attached to the inner ring of the rotating ring, and the outer ring of the sleeve head is correspondingly provided with a positioning groove corresponding to the positioning protrusion.
7. A nut pretensioner according to claim 6, wherein: the positioning bulge is made of magnetic material and is connected with the sleeve head in a magnetic attraction mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121532849.5U CN215847875U (en) | 2021-07-07 | 2021-07-07 | Nut pretensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121532849.5U CN215847875U (en) | 2021-07-07 | 2021-07-07 | Nut pretensioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215847875U true CN215847875U (en) | 2022-02-18 |
Family
ID=80332884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121532849.5U Active CN215847875U (en) | 2021-07-07 | 2021-07-07 | Nut pretensioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215847875U (en) |
-
2021
- 2021-07-07 CN CN202121532849.5U patent/CN215847875U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |