CN114810783A - Anti-falling bolt for rail transit carriage - Google Patents
Anti-falling bolt for rail transit carriage Download PDFInfo
- Publication number
- CN114810783A CN114810783A CN202210378014.1A CN202210378014A CN114810783A CN 114810783 A CN114810783 A CN 114810783A CN 202210378014 A CN202210378014 A CN 202210378014A CN 114810783 A CN114810783 A CN 114810783A
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- China
- Prior art keywords
- bolt
- column
- nut body
- rail transit
- positioning
- 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.)
- Pending
Links
- 230000000670 limiting effect Effects 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 abstract description 3
- 125000003003 spiro group Chemical group 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B37/00—Nuts or like thread-engaging members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
- F16B35/044—Specially-shaped ends
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B39/00—Locking of screws, bolts or nuts
- F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
- F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses an anti-drop bolt for a rail transit carriage, which belongs to the technical field of fasteners and comprises a bolt body, a nut body, a stop piece and a locking piece, wherein the nut body is positioned between the bolt body and the stop piece; according to the invention, the positioning column in the shape of the regular polygon prism on the stop piece is inserted into the positioning groove in the shape of the regular polygon hole at the end part of the threaded column, the threaded column limits the rotational freedom degree of the stop piece, the plurality of limiting columns on the stop piece are inserted into the plurality of grooves of the nut body, so that the rotational freedom degree of the nut body is limited, the stop piece is connected to the threaded column by using the locking piece, and the stop piece can be installed, so that the anti-drop function of the nut body is achieved, the anti-drop installation is convenient, and the structural design is ingenious.
Description
Technical Field
The invention belongs to the technical field of fasteners, and particularly relates to an anti-falling bolt for a rail transit carriage.
Background
Rail transit refers to a type of vehicle or transportation system in which operating vehicles need to travel on a particular rail. The most typical rail transit is a railway system consisting of conventional trains and standard railways. With the diversified development of train and railway technology, rail transit is more and more types, not only extends over long-distance land transportation, but also is widely applied to urban public transport at medium and short distances, fasteners are mechanical parts which are used for fastening connection and are widely applied, and due to the particularity of rail transit, the fasteners for carriages are not allowed to fall off under the environment with high operation speed and high vibration frequency.
At present, when the bolt is used with the cooperation of hexagonal slotted nut, need twist specific angle and position with hexagonal slotted nut, just can pass the hole on the bolt and in the recess of hexagonal slotted nut simultaneously with the bolt, make the use of bolt very inflexible like this, the bolt can only lock the position of specific thickness, when needs lock the position of different thickness, then need change the bolt of different specifications, the commonality is poor.
Disclosure of Invention
The invention aims to: the anti-drop bolt for the rail transit carriage aims to solve the problems that a bolt can penetrate through a hole in the bolt and a groove of the hexagonal slotted nut at the same time only by screwing the hexagonal slotted nut to a specific angle and position, so that the bolt is poor in use flexibility, poor in universality and inconvenient in anti-drop installation.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an anticreep type bolt for track traffic carriage, its includes bolt body, nut body, stop part and retaining member, the nut body is located the bolt body with between the stop part, be provided with the screw thread post on the tip of bolt body, nut body spiro union is in on the screw thread post, a plurality of recesses have been seted up on the tip of nut body, and is a plurality of the recess along the axle center of screw thread post is annular array and arranges, the stop part is located the tip department of screw thread post, be provided with the reference column on the stop part, the constant head tank has been seted up on the tip of screw thread post, the reference column inserts in the constant head tank, just the stop part inserts in the recess, the retaining member connect the stop part with the screw thread post.
As a further description of the above technical solution:
the positioning groove is a regular polygon hole, the positioning column is a regular polygon prism, and the number of the edges of the positioning groove is larger than that of the positioning column.
As a further description of the above technical solution:
the blind hole has been seted up to the tip of stop part, the blind hole extends to in the reference column, the retaining member is located in the blind hole, the retaining member passes reference column and spiro union the screw thread post.
As a further description of the above technical solution:
the thread screwing direction of the thread column is opposite to that of the locking piece.
As a further description of the above technical solution:
be provided with many spacing posts on the stopper, many spacing post inserts in the recess, just the outer wall of spacing post supports respectively the inner wall of recess.
As a further description of the above technical solution:
the limiting columns correspond to the grooves one to one.
As a further description of the above technical solution:
the length of the positioning column is not less than half of the length of the nut body.
As a further description of the above technical solution:
the length of the nut body is not less than that of the threaded column.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the anti-dropping nut, the positioning column in the shape of the regular polygon prism on the stop piece is inserted into the positioning groove in the shape of the regular polygon hole in the end part of the threaded column, the threaded column limits the rotational freedom degree of the stop piece, the limiting columns on the stop piece are inserted into the grooves of the nut body, the rotational freedom degree of the nut body can be limited, the stop piece is connected to the threaded column through the locking piece, and therefore the stop piece can be installed, the anti-dropping effect of the nut body is achieved, the anti-dropping nut is convenient to install, and the structural design is ingenious.
2. According to the invention, the positioning columns can be clamped into the positioning grooves from a plurality of positions by the aid of the positioning grooves with the number of edges larger than that of the positioning columns, so that the angle of the stop part can be changed, the stop part can adapt to the angle of the nut body quickly, the limit columns can be inserted into the grooves accurately and quickly, and the nut positioning device is flexible and convenient to use and high in universality.
Drawings
Fig. 1 is a schematic overall structure diagram of a separation-preventing bolt for a rail transit car.
Fig. 2 is an exploded view of a breakaway bolt for a rail transit car.
Fig. 3 is a sectional view of a separation preventing type bolt for a rail transit car.
Fig. 4 is a partially enlarged view of a portion a in fig. 3.
Fig. 5 is a schematic view of a drop-resistant bolt stop for a rail transit car.
Illustration of the drawings:
1. a bolt body; 2. a nut body; 3. a stopper; 4. a locking member; 5. a threaded post; 6. a groove; 7. a positioning column; 8. positioning a groove; 9. blind holes; 10. a limiting column.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: an anti-drop bolt for a rail transit carriage comprises a bolt body 1, a nut body 2, a stop piece 3 and a locking piece 4, the nut body 2 is positioned between the bolt body 1 and the stop piece 3, a threaded column 5 is arranged on the end part of the bolt body 1, the nut body 2 is screwed on the threaded column 5, a plurality of grooves 6 are arranged on the end part of the nut body 2, the grooves 6 are arranged in an annular array along the axis of the threaded column 5, the stop piece 3 is located at the end of the threaded post 5, a positioning post 7 is provided on the stop piece 3, a positioning groove 8 is arranged at the end part of the threaded column 5, the positioning column 7 is inserted into the positioning groove 8, the stop piece 3 is inserted into the groove 6, and the locking piece 4 is connected with the stop piece 3 and the threaded column 5;
the positioning groove 8 is a regular polygonal hole, the positioning column 7 is a regular polygonal prism, the number of the edges of the positioning groove 8 is greater than that of the positioning column 7, the positioning groove 8 has a limiting effect on the rotation of the positioning column 7, so that the stop piece 3 has a limiting effect on the rotation of the nut body 2 and has a locking and anti-falling effect, the positioning groove 8 is a regular dodecagonal hole, and the positioning column 7 is a hexagonal prism, so that the positioning column 7 can be clamped into the positioning groove 8 from multiple positions, the angle of the stop piece 3 can be changed, and the stop piece 3 can be inserted into the groove 6 when the nut body 2 is at multiple angles, so that the bolt is flexible and convenient to use and has strong universality;
the end part of the stop part 3 is provided with a blind hole 9, the blind hole 9 extends into the positioning column 7, the locking part 4 is arranged in the blind hole 9, the locking part 4 penetrates through the positioning column 7 and is in threaded connection with the threaded column 5, so that the connection between the stop part 3 and the threaded column 5 is facilitated, the stop part 3 mainly limits the degree of freedom of the rotation direction of the nut body 2, and therefore, no matter where the positioning column 7 is located in the positioning groove 8, the positioning column 7 only needs to be connected to the threaded column 5, the positioning column 7 is not allowed to fall off from the positioning groove 8, the stop part 3 is matched with the nut bodies 2 at different positions on the threaded column 5, and the universality is strong;
the thread screwing direction of the threaded column 5 is opposite to that of the locking piece 4;
a plurality of limiting columns 10 are arranged on the stop piece 3, the limiting columns 10 are inserted into the groove 6, and the outer walls of the limiting columns 10 respectively abut against the inner wall of the groove 6; the limiting columns 10 correspond to the grooves 6 one by one, so that the freedom degree of the nut body 2 in the rotating direction is completely limited, and the nut body 2 is prevented from falling off from the threaded rod;
the length of the positioning column 7 is not less than half of the length of the nut body 2, so that a part of the positioning column 7 is always inserted into the positioning groove 8, and the limiting failure is avoided;
the length of the nut body 2 is not less than that of the threaded column 5, so that the end part of the threaded column 5 is prevented from protruding out of the end part of the nut body 2, and the installation effect is good.
The working principle is as follows: firstly, pass bolt body 1 the place that needs locking on the track traffic carriage, with 2 spiro couplings of nut body on screw post 5, nut body 2 supports the position of locking, screw up nut body 2, secondly, observe the distribution angle and the position of a plurality of recesses 6 on the nut body 2, align a plurality of recesses 6 with many spacing posts 10 on the stop part 3, reference column 7 aligns constant head tank 8, promote stop part 3, go into the edges and corners card of reference column 7 to the corner of constant head tank 8, insert recess 6 with spacing post 10 in, finally, put into blind hole 9 with retaining member 4, retaining member 4 passes reference column 7, twist and move retaining member 4 spiro couplings on screw post 5.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. The utility model provides a anticreep type bolt for rail transit carriage which characterized in that: comprises a bolt body (1), a nut body (2), a stop part (3) and a locking part (4), wherein the nut body (2) is positioned between the bolt body (1) and the stop part (3), a thread column (5) is arranged at the end part of the bolt body (1), the nut body (2) is screwed on the thread column (5), a plurality of grooves (6) are formed in the end part of the nut body (2), the grooves (6) are distributed along the axis of the thread column (5) in an annular array, the stop part (3) is positioned at the end part of the thread column (5), a positioning column (7) is arranged on the stop part (3), a positioning groove (8) is formed in the end part of the thread column (5), the positioning column (7) is inserted into the positioning groove (8), and the stop part (3) is inserted into the groove (6), the locking piece (4) is connected with the stop piece (3) and the threaded column (5).
2. The anti-drop bolt for the rail transit carriage is characterized in that the positioning groove (8) is a regular polygon hole, the positioning column (7) is a regular polygon prism, and the number of the sides of the positioning groove (8) is greater than that of the positioning column (7).
3. The anti-drop bolt for the rail transit carriage as claimed in claim 2, wherein the end of the stop member (3) is provided with a blind hole (9), the blind hole (9) extends into the positioning column (7), the locking member (4) is arranged in the blind hole (9), and the locking member (4) passes through the positioning column (7) and is screwed with the threaded column (5).
4. The anti-drop bolt for a rail transit car according to claim 3, characterized in that the threaded stud (5) has a threaded helical direction opposite to that of the retaining member (4).
5. The anti-drop bolt for the rail transit carriage as claimed in claim 1, wherein a plurality of limiting columns (10) are arranged on the stop member (3), the plurality of limiting columns (10) are inserted into the groove (6), and the outer walls of the limiting columns (10) respectively abut against the inner wall of the groove (6).
6. The anti-drop bolt for a rail transit car as claimed in claim 5, wherein the limit posts (10) correspond to the grooves (6) one to one.
7. The anti-drop bolt for a rail transit car according to claim 1, characterized in that the length of the positioning post (7) is not less than half of the length of the nut body (2).
8. The anti-drop bolt for rail transit cars according to claim 1, characterized in that the length of said nut body (2) is not less than the length of said threaded post (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210378014.1A CN114810783A (en) | 2022-04-12 | 2022-04-12 | Anti-falling bolt for rail transit carriage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210378014.1A CN114810783A (en) | 2022-04-12 | 2022-04-12 | Anti-falling bolt for rail transit carriage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114810783A true CN114810783A (en) | 2022-07-29 |
Family
ID=82534835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210378014.1A Pending CN114810783A (en) | 2022-04-12 | 2022-04-12 | Anti-falling bolt for rail transit carriage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114810783A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030147716A1 (en) * | 2002-02-01 | 2003-08-07 | Daiki Industries Co., Ltd. | Structure of loosening-stop tightening means, loosening-stop bolt having the structure, method for producing the same bolt, loosening-stop nut having the structure, and method for producing the same nut |
| CN101936323A (en) * | 2010-09-17 | 2011-01-05 | 浙江吉利汽车研究院有限公司 | Vehicle theftproof nut |
| CN204677573U (en) * | 2015-02-01 | 2015-09-30 | 刘兴丹 | Combination chek bolt |
| CN110792678A (en) * | 2019-11-01 | 2020-02-14 | 朱永发 | Structure for preventing nut from loosening |
| CN111765159A (en) * | 2020-08-14 | 2020-10-13 | 台州市元晟水产养殖机械有限公司 | Waterproof bolt and gear box, oxygen-increasing machine thereof |
| CN114233739A (en) * | 2021-12-20 | 2022-03-25 | 房晓勇 | A cut-off formula prevents that nut from circling round not hard up device for connecting and fastening part |
-
2022
- 2022-04-12 CN CN202210378014.1A patent/CN114810783A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030147716A1 (en) * | 2002-02-01 | 2003-08-07 | Daiki Industries Co., Ltd. | Structure of loosening-stop tightening means, loosening-stop bolt having the structure, method for producing the same bolt, loosening-stop nut having the structure, and method for producing the same nut |
| CN101936323A (en) * | 2010-09-17 | 2011-01-05 | 浙江吉利汽车研究院有限公司 | Vehicle theftproof nut |
| CN204677573U (en) * | 2015-02-01 | 2015-09-30 | 刘兴丹 | Combination chek bolt |
| CN110792678A (en) * | 2019-11-01 | 2020-02-14 | 朱永发 | Structure for preventing nut from loosening |
| CN111765159A (en) * | 2020-08-14 | 2020-10-13 | 台州市元晟水产养殖机械有限公司 | Waterproof bolt and gear box, oxygen-increasing machine thereof |
| CN114233739A (en) * | 2021-12-20 | 2022-03-25 | 房晓勇 | A cut-off formula prevents that nut from circling round not hard up device for connecting and fastening part |
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| SE01 | Entry into force of request for substantive examination | ||
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