CN202867492U - Bolt provided with pretightening force pointer detecting ring - Google Patents
Bolt provided with pretightening force pointer detecting ring Download PDFInfo
- Publication number
- CN202867492U CN202867492U CN 201220585042 CN201220585042U CN202867492U CN 202867492 U CN202867492 U CN 202867492U CN 201220585042 CN201220585042 CN 201220585042 CN 201220585042 U CN201220585042 U CN 201220585042U CN 202867492 U CN202867492 U CN 202867492U
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- CN
- China
- Prior art keywords
- bolt
- pointer
- ring
- fixed
- detecting ring
- 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
A bolt provided with a pretightening force pointer detecting ring comprises the bolt, the pointer detecting ring, a fixed bar, a fixed pin and an adhesion agent. A stepped hole is formed in the axial center of the bolt. A fixed pin hole is formed in the radial direction of the bolt. The pointer detecting ring is provided with a spiral groove and a pointer. The fixed bar is a bar piece, wherein one end of the bar piece is provided with a boss and a screw cap. The fixed bar is arranged inside the stepped hole. The adhesion agent is used for fixedly connecting the end head of the fixed bar and the fixed hole. The pointer detecting ring is arranged on the boss of the fixed bar in a sleeved mode. The fixed pin is embedded into the fixed pin hole. The end head of the fixed pin is meshed with the spiral groove of the pointer detecting ring. According to the bolt provided with the pretightening force pointer detecting ring, the position of the pointer detecting ring is observed through naked eyes, and reduction or failure of pretightening force of the bolt can be found as soon as possible. The bolt provided with the pretightening force pointer detecting ring has the advantages of being simple in structure and convenient to detect.
Description
Technical field
The utility model relates to technical field of fastening, and especially a kind of pretightening force pointer that is provided with is surveyed the bolt that encircles.
Background technique
In the prior art, can be found everywhere with the be connected fastening means of mechanical parts of bolt, in particular for the connecting bolt of motor on the wind-driven generator and tower cylinder and the connecting bolt of motor and blade, and the connecting bolt that is used for bridge upper connecting rod and bridge arch or bridge floor, all belong to important connection, because these bolts all bear oscillating load, loosening phenomenon is difficult to avoid, and must make regular check on these bolts, and the problem of existence is, the method that how can accomplish with the naked eye to observe or touch with hand, find early the sign of bolt looseness, the workload that not only can reduce to keep in repair is increased work efficiency, also can prevent trouble before it happens, reduce and avoid the generation of contingency.
The model utility content
The purpose of this utility model is that a kind of pretightening force pointer that is provided with that provides for the deficiencies in the prior art is surveyed the bolt that encircles, the utility model is surveyed the sensing of ring by the naked-eye observation pointer, the pretightening force that can find bolt reduces or inefficacy, has advantage simple in structure, easy to detect.
The concrete technological scheme that realizes the utility model purpose is:
A kind of pretightening force pointer that is provided with is surveyed the bolt that encircles, its characteristics comprise bolt, pointer survey ring, fixing rod, fixing pin and Bond, the axle center of described bolt is provided with step hole, step hole is made of fixed hole, transitional pore and shallow counterbore, bolt radially be provided with fixed pin holes, fixed pin holes and shallow counterbore connect, the periphery of shallow counterbore is provided with scale value on the bolt, pointer is surveyed ring and is circular cylinder spare, its outer wall is provided with spiral chute, end face is provided with pointer, and fixing rod is the rod member that an end is provided with boss and nut; Described fixing rod is located in the step hole, its rod member termination embeds in the fixed hole of step hole, Bond is connected fixing rod rod member termination and fixed hole, pointer is surveyed ring set and is contained on the boss of fixing rod, and between the counterbore of the nut of fixing rod and bolt, fixing pin is embedded in the fixed pin holes of bolt, and the spiral chute engagement of the termination of fixing pin and pointer survey ring.
The utility model is surveyed the position of ring by the naked-eye observation pointer, can find early that the pretightening force of bolt reduces or inefficacy, has advantage simple in structure, easy to detect.
Description of drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the plan view of Fig. 1;
Fig. 3 is that the utility model pointer is surveyed the structure of rings schematic diagram;
Fig. 4 is the side view of Fig. 3.
Embodiment
Consult Fig. 1, Fig. 2, Fig. 4, the utility model comprises bolt 1, pointer survey ring 2, fixing rod 3, fixing pin 5 and Bond 4, the axle center of described bolt 1 is provided with step hole, step hole is made of fixed hole 12, transitional pore 13 and shallow counterbore 14, bolt 1 radially be provided with fixed pin holes 15, fixed pin holes 15 connects with shallow counterbore 14, the periphery of shallow counterbore 14 is provided with scale value 16 on the bolt 1, it is circular cylinder spare that pointer is surveyed ring 2, its outer wall is provided with spiral chute 21, end face is provided with pointer 22, and fixing rod 3 is the rod member that an end is provided with boss 32 and nut 31; Described fixing rod 3 is located in the step hole, its rod member termination embeds in the fixed hole 12 of step hole, Bond 4 is connected fixing rod 3 rod member terminations and fixed hole 12, and pointer is surveyed ring 2 and is sleeved on the boss 32 of fixing rod 3, and between the counterbore 14 of the nut 31 of fixing rod 3 and bolt 1.
Consult Fig. 1, Fig. 3, Fig. 4, fixing pin 5 is embedded in the fixed pin holes 15 of bolt 1, and spiral chute 21 engagements of the termination of fixing pin 5 and pointer survey ring 2.
The assembling of dispatching from the factory of the present utility model:
The rod end of fixing rod 3 is inserted in the step hole of bolt 1, fixed hole 12 in itself and the step hole is press-fitted, and be connected with Bond 4, pointer is surveyed ring 2 to be through on the boss 32 of fixing rod 3, and put on nut 31, make pointer survey ring 2 between the counterbore 14 of the nut 31 of fixing rod 3 and bolt 1, and the pointer on the end face 22 points to the scale value 16 of bolt 1, the pointer of this moment is surveyed ring 2 and can be rotated, then, fixing pin 5 is embedded in the fixed pin holes 15 of bolt 1, and make the termination of fixing pin 5 and spiral chute 21 engagements that pointer is surveyed ring 2, limit pointer and survey the rotation of ring 2, make pointer survey the scale value 16 that pointer 22 on the ring 2 points to bolts 1, i.e. initial position, the assembling of dispatching from the factory of the present utility model is finished.
The utility model is to use like this:
After 1 pair of mechanical parts enforcement of bolt is fastening, under the effect of clamping force, bolt 1 produces stress and corresponding axial strain, because the rod end of fixing rod 3 is fixed in the fixed hole 12 of step hole, when bolt 1 produces the strain elongation, fixing rod 3 does not stress, do not extend yet, and bolt 1 is under the effect of axial strain, make fixed pin holes 15 with respect to the displacement of fixing rod 3 along the axial generation △ L value of bolt 1, be that fixing pin 5 is surveyed ring 2 along the displacement of the axial generation △ L value of bolt 1 with respect to pointer, because pointer is surveyed between the counterbore 14 that ring 2 is limited by the nut 31 of fixing rod 3 and bolt 1, can't axial displacement, under the engaging force effect of the termination of fixing pin 5 and spiral chute 21, force pointer to survey ring 2 and rotate around fixing rod 3, make pointer survey the initial position that points to bolt 1 scale value 16 on the ring 2 and change, become at line position, expression bolt 1 has been tightened, is in normal working; Otherwise, when bolt 1 produces when loosening, reduce and even disappear with clamping force, the axial strain that bolt 1 produces disappears, the termination of fixing pin 5 imposes on the reverse engaging force of spiral chute 21, forces pointer to survey ring 2 around fixing rod 3 backward rotation, and the pointer 22 that pointer is surveyed on the ring 2 is got back to initial position.Survey the variation of pointer 22 positions on the ring 2 by observing pointer, can judge whether bolt 1 is loosening, and whether working state is normal.
Claims (1)
1. one kind is provided with the bolt that the pretightening force pointer is surveyed ring, it is characterized in that it comprises bolt (1), pointer is surveyed ring (2), fixing rod (3), fixing pin (5) and Bond (4), the axle center of described bolt (1) is provided with step hole, step hole is by fixed hole (12), transitional pore (13) and shallow counterbore (14) consist of, bolt (1) radially be provided with fixed pin holes (15), fixed pin holes (15) connects with shallow counterbore (14), the periphery of the upper shallow counterbore (14) of bolt (1) is provided with scale value (16), it is circular cylinder spare that pointer is surveyed ring (2), its outer wall is provided with spiral chute (21), end face is provided with pointer (22), and fixing rod (3) is the rod member that an end is provided with boss (32) and nut (31); Described fixing rod (3) is located in the step hole, its rod member termination embeds in the fixed hole (12) of step hole, Bond (4) is connected fixing rod (3) rod member termination and fixed hole (12), pointer is surveyed ring (2) and is sleeved on the boss (32) of fixing rod (3), and be positioned between the counterbore (14) of the nut (31) of fixing rod (3) and bolt (1), fixing pin (5) is embedded in the fixed pin holes (15) of bolt (1), and spiral chute (21) engagement of the termination of fixing pin (5) and pointer survey ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585042 CN202867492U (en) | 2012-11-08 | 2012-11-08 | Bolt provided with pretightening force pointer detecting ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220585042 CN202867492U (en) | 2012-11-08 | 2012-11-08 | Bolt provided with pretightening force pointer detecting ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202867492U true CN202867492U (en) | 2013-04-10 |
Family
ID=48034214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220585042 Expired - Lifetime CN202867492U (en) | 2012-11-08 | 2012-11-08 | Bolt provided with pretightening force pointer detecting ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202867492U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571504A (en) * | 2018-05-08 | 2018-09-25 | 上海威纳工程技术有限公司 | Accurate pretension bolt |
| CN113847322A (en) * | 2021-09-01 | 2021-12-28 | 宁波宁力高强度紧固件有限公司 | Hexagonal head bolt |
-
2012
- 2012-11-08 CN CN 201220585042 patent/CN202867492U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108571504A (en) * | 2018-05-08 | 2018-09-25 | 上海威纳工程技术有限公司 | Accurate pretension bolt |
| CN113847322A (en) * | 2021-09-01 | 2021-12-28 | 宁波宁力高强度紧固件有限公司 | Hexagonal head bolt |
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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 |
Granted publication date: 20130410 |
|
| CX01 | Expiry of patent term |