CN213442552U - Anti-drop pull rod for motor car - Google Patents
Anti-drop pull rod for motor car Download PDFInfo
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- CN213442552U CN213442552U CN202022221087.9U CN202022221087U CN213442552U CN 213442552 U CN213442552 U CN 213442552U CN 202022221087 U CN202022221087 U CN 202022221087U CN 213442552 U CN213442552 U CN 213442552U
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Abstract
The application relates to the field of motor car braking technology, in particular to an anti-falling pull rod for a motor car. It includes pull rod and anticreep subassembly, the anticreep subassembly is including being located the fastener of railing top, wearing to establish the locating lever of pull rod and being located the anticreep board of pull rod below, locating lever one end with the fastener is connected, the other end with the anticreep board is connected, the pull rod has seted up the confession along its length direction the guide way of locating lever radial movement, the fastener is fixed with the automobile body, the width of anticreep board be greater than with the groove width of guide way. The application has the effect that the hand braking pull rod is not easy to fall off under the limit working condition.
Description
Technical Field
The application relates to the field of motor car braking technology, in particular to an anti-falling pull rod for a motor car.
Background
At present, a hand brake device is one of the important components in the field of railway vehicle braking in China, and a hand wheel is continuously rotated or a handle is pulled by acting force applied by a worker, so that a basic brake device is driven, and a brake shoe is pressed on a wheel to generate a braking effect. The hand brake pull rod is an important component of a hand brake device, and generally comprises a hand brake, a hand brake chain, a hand brake lever and a transmission mechanism.
The prior chinese patent publication No. CN202557553U discloses an integrally forged hand brake pull rod, which mainly includes a pull rod head, a pull rod, and a pull rod tail, and the pull rod head, the pull rod, and the pull rod tail are integrally forged.
In view of the above-mentioned related technologies, the inventor believes that, when the railway vehicle is manually braked, if the hand brake device reaches the limit condition such as the maximum braking stroke, the tail of the pull rod is easy to break due to stress concentration, and the pull rod only has two support points, namely the head of the pull rod and the tail of the pull rod, and has the defect that the pull rod is easy to fall off under the limit condition of the hand brake.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the hand braking pull rod easily drops under the limit working condition, the application provides an anticreep pull rod for motor car.
The application provides an anticreep pull rod for motor car adopts following technical scheme:
the utility model provides an anticreep pull rod for motor car, includes pull rod and anticreep subassembly, the anticreep subassembly is including being located the fastener of railing top, wearing to establish the locating lever of pull rod and being located the anticreep board of pull rod below, locating lever one end with the fastener is connected, the other end with the anticreep board is connected, the pull rod has seted up the confession along its length direction the guide way of locating lever radial movement, the fastener is fixed with the automobile body, the width of anticreep board be greater than with the groove width of guide way.
By adopting the technical scheme, the fastener is fixed with the vehicle body, then the positioning rod penetrates through the pull rod, one end of the positioning rod is connected with the fastener, the other end of the positioning rod is connected with the anti-falling plate, and the width of the anti-falling plate is larger than the groove width of the guide groove, so that the anti-falling plate and the positioning rod limit the radial movement of the pull rod, and further, under the limit working condition, the pull rod is still fixed on the anti-falling rack through the anti-falling plate; in addition, the pull rod is provided with a guide groove for the positioning rod to move in the radial direction along the length direction of the pull rod, so that the positioning rod cannot interfere with the pull rod in the working process of the pull rod.
Optionally, an outer flat key is arranged on the outer peripheral surface of the lower end of the positioning rod, a through hole for the positioning rod to penetrate through is formed in the lower end surface of the anti-falling plate, and an inner flat key matched with the outer flat key is arranged in the through hole; the upper end of the positioning rod is detachably connected with the fastener.
Through adopting above-mentioned technical scheme, wear to establish anticreep board and pull rod with the locating lever in proper order to peg graft outer parallel key in interior parallel key, be connected the upper end and the fastener of locating lever afterwards, the removal of outer parallel key restriction anticreep board, and when the anticreep subassembly appears damaging, can be more convenient follow the trade to it.
Optionally, an arc-shaped groove concentric with the outer peripheral surface of the pull rod is arranged on the upper end surface of the anti-falling plate.
Through adopting above-mentioned technical scheme, the arc wall is concentric with the pull rod outer peripheral face for the arc wall provides the effect of a direction to the pull rod, and in addition, rocking of pull rod is restricted to the arc wall, reduces the possibility that the pull rod dislocates.
Optionally, a plurality of balls are arranged at the bottom of the arc-shaped groove, and the peripheries of the balls are abutted to the outer peripheral surface of the pull rod.
Through adopting above-mentioned technical scheme, the outer peripheral face of ball and the outer peripheral face butt of pull rod for in the pull rod course of operation, the ball provides the effect of a direction to the pull rod, in addition, can also turn into the rolling friction between ball and the pull rod with the sliding friction between anticreep board and the pull rod, and then when reducing frictional force, can also reduce the injury to the pull rod outer peripheral face.
Optionally, the number of the balls is two, and the balls are evenly distributed on two sides of the through hole at intervals.
Through adopting above-mentioned technical scheme, for the direction of single ball, two and even interval distribution have increased with the area of contact of pull rod outer peripheral face in the ball of through-hole both sides, through the cooperation of two balls for the direction of pull rod is more stable.
Optionally, a placing groove for placing the ball is formed at the bottom of the arc-shaped groove.
By adopting the technical scheme, the balls are placed in the placing groove in the using process of the pull rod, and the peripheral surfaces of the balls are abutted with the peripheral surface of the pull rod, so that the peripheral surface of the pull rod limits the movement of the rolling shaft, and the balls are prevented from being separated from the placing groove; and when needs follow the time of trading to the ball, can directly take out the ball in the standing groove, convenient the dismantlement.
Optionally, a limiting cover is arranged on the notch of the placing groove, a limiting hole is formed in one end, close to the pull rod, of the limiting cover, and the aperture of the limiting hole is smaller than the diameter of the ball.
Through adopting above-mentioned technical scheme, the aperture of spacing hole is less than the diameter of ball for when guaranteeing that the part of ball can stretch out from spacing hole, can also restrict the removal of ball through the pore wall in spacing hole, when not using the anticreep subassembly, restriction ball breaks away from in the standing groove.
Optionally, the ball is made of rubber.
Through adopting above-mentioned technical scheme, because rubber still has certain elasticity when having certain rigidity for when guaranteeing the guide effect of ball to the pull rod, can also reduce the injury of ball to the pull rod, increase the live time of pull rod.
In summary, the present application includes at least one of the following beneficial technical effects:
1. fixing a fastener with the vehicle body, then penetrating a positioning rod through a pull rod, connecting one end of the positioning rod with the fastener, connecting the other end of the positioning rod with an anti-falling plate, and enabling the upper end surface of the anti-falling plate to be abutted against the outer peripheral surface of the pull rod, so that the anti-falling plate and the positioning rod limit the radial movement of the pull rod, and further ensuring that the pull rod is still fixed on an anti-falling rack through the anti-falling plate under the limit working condition; in addition, the pull rod is provided with a guide groove for the positioning rod to move in the radial direction along the length direction of the pull rod, so that the positioning rod cannot interfere with the pull rod in the working process of the pull rod;
2. the outer peripheral face of ball and the outer peripheral face butt of pull rod for at the pull rod course of operation, the ball provides the effect of a direction to the pull rod, in addition, can also turn into the rolling friction between ball and the pull rod with the sliding friction between anticreep board and the pull rod, and then when reducing frictional force, can also be less to the injury of pull rod outer peripheral face.
Drawings
FIG. 1 is a schematic structural view of an anti-drop pull rod for a motor vehicle according to an embodiment of the present application;
FIG. 2 is a partially exploded schematic view of the trip prevention assembly shown in FIG. 1;
FIG. 3 is a partially exploded view of the trip blocking member shown in FIG. 2;
fig. 4 is a partially enlarged schematic view of a portion a in fig. 3.
Description of reference numerals: 1. a hand brake pull rod; 2. an anti-drop component; 3. a tie rod head; 4. a pull rod; 5. the tail part of the pull rod; 6. a fastener; 7. positioning a rod; 8. a drop-off prevention member; 9. an anti-drop plate; 10. a ball bearing; 11. a flat outer bond; 12. a through hole; 13. an inner flat key; 14. a guide groove; 15. an arc-shaped slot; 16. a placement groove; 17. a limiting cover; 18. a limiting hole; 19. a control block.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses anticreep pull rod for motor car. Referring to fig. 1 and 2, the anti-drop pull rod for the motor car comprises a hand brake pull rod 1 and an anti-drop assembly 2.
The hand brake pull rod 1 comprises a pull rod head portion 3, a pull rod 4 and a pull rod tail portion 5, and the pull rod head portion 3, the pull rod 4 and the pull rod tail portion 5 are integrally forged.
The anti-falling assembly 2 comprises a fastening piece 6 positioned above the pull rod 4, a positioning rod 7 penetrating through the pull rod 4 and an anti-falling piece 8 positioned below the pull rod 4, one end of the positioning rod 7 is connected with the fastening piece 6, the other end of the positioning rod is connected with the anti-falling piece 8, the pull rod 4 is provided with a guide groove 14 for the positioning rod 7 to move in the radial direction along the length direction of the pull rod, and the width of the anti-falling plate 9 is larger than the groove width of the guide groove 14; one side of the fastener 6, which is far away from the positioning rod 7, is fixed on the vehicle body, and usually, the fastener 6 and the vehicle body are fixed through bolts or can be directly fixed through welding; and fastener 6 is close to one side of locating lever 7 and is connected with locating lever 7, usually, passes through threaded connection between locating lever 7 and the fastener 6, can also fix through interference fit.
Referring to fig. 2 and 3, anticreep piece 8 includes anticreep board 9 and ball 10, and anticreep board 9 is connected with the one end that fastener 6 was kept away from to locating lever 7, and is concrete, and 7 lower extremes of locating lever outer peripheral face integrated into one piece have outer flat key 11, and the terminal surface is seted up under the anticreep board 9 and is supplied locating lever 7 to wear to establish through-hole 12, and sets up in the through-hole 12 with outer flat key 11 complex interior flat key 13.
The upper end face of the anti-falling plate 9 is provided with an arc-shaped groove 15 concentric with the peripheral face of the pull rod 4, the ball 10 is arranged at the bottom of the arc-shaped groove 15, and the periphery of the ball 10 is abutted against the peripheral face of the pull rod 4; in addition, the balls 10 are provided in a plurality of and evenly spaced apart, for example, two balls 10 are provided, the two balls 10 are respectively provided at both sides of the through hole 12, and the balls 10 have certain elasticity, for example, rubber, and the balls 10 are made of rubber.
Referring to fig. 3 and 4, a placing groove 16 for placing the rolling balls 10 is formed at the bottom of the arc-shaped groove 15, a limiting cover 17 is arranged at the notch of the placing groove 16, and generally, the limiting cover 17 is in threaded connection with the wall of the placing groove 16 and can be directly embedded in the placing groove 16 in an interference manner; a limiting hole 18 for a part of the ball 10 to extend out is formed in one side, close to the pull rod 4, of the limiting cover 17, and the aperture of the limiting hole 18 is smaller than the diameter of the ball 10; in addition, one side of the limit cover 17 close to the pull rod 4 is provided with a control block 19, generally, the control block 19 and the limit cover 17 are integrally formed and can also be fixed by welding, and in this embodiment, there are two control blocks 19 respectively arranged at two sides of the limit hole 18.
The implementation principle of the anti-dropping pull rod for the bullet train in the embodiment of the application is as follows:
the installation process comprises the following steps: before the anti-drop pull rod for the locomotive is used, firstly, the ball 10 is placed in the placing groove 16, the limiting cover 17 is in threaded connection with the anti-drop plate 9 through the control block 19, and then the placing groove 16 is covered, at the moment, the part of the ball 10 extends out of the limiting hole 18, but the limiting cover 17 limits the movement of the ball 10 and prevents the ball from dropping out because the aperture of the limiting hole 18 is smaller than the diameter of the ball 10; subsequently wear to establish anticreep board 9 and pull rod 4 from supreme in proper order with locating lever 7, at this moment, outer parallel key 11 is connected with the cooperation of interior parallel key 13, when the periphery of ball 10 and the outer peripheral face butt of pull rod 4, with locating lever 7 and 6 threaded connection of fastener, passes through the bolt with fastener 6 at last and fixes with the automobile body.
The use process comprises the following steps: when the anti-drop pull rod for the motor car is used, the positioning rod 7 and the ball 10 guide the hand brake pull rod 1 along with the movement of the hand brake pull rod 1.
When the anti-dropping pull rod for the motor car is in the limit working conditions such as the maximum braking stroke for a long time and the tail part 5 of the pull rod is broken due to stress concentration, the anti-dropping plate 9 limits the radial movement of the hand braking pull rod 1 because the width of the anti-dropping plate 9 is larger than the groove width of the guide groove 14, in addition, the guide groove 14 limits the radial movement of the positioning rod 7, further limits the axial movement of the hand braking pull rod 1, and further prevents the hand braking pull rod 1 from dropping.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a bullet train is with anticreep pull rod, includes pull rod (4), its characterized in that: the anti-falling device is characterized by further comprising an anti-falling assembly (2), wherein the anti-falling assembly (2) comprises a fastener (6) positioned above the pull rod (4), a positioning rod (7) penetrating through the pull rod (4) and an anti-falling plate (9) positioned below the pull rod (4), one end of the positioning rod (7) is connected with the fastener (6), and the other end of the positioning rod is connected with the anti-falling plate (9); the pull rod (4) is provided with a guide groove (14) for the positioning rod (7) to move in the radial direction along the length direction of the pull rod, the fastener (6) is fixed with the vehicle body, and the width of the anti-falling plate (9) is larger than the groove width of the guide groove (14).
2. The anti-drop pull rod for the bullet train according to claim 1, wherein: the outer peripheral face of the lower end of the positioning rod (7) is provided with an outer flat key (11), the lower end face of the anti-falling plate (9) is provided with a through hole (12) for the positioning rod (7) to penetrate through, an inner flat key (13) matched with the outer flat key (11) is arranged in the through hole (12), and the upper end of the positioning rod (7) is detachably connected with the fastener (6).
3. The anti-drop pull rod for the bullet train according to claim 1, wherein: the upper end face of the anti-falling plate (9) is provided with an arc-shaped groove (15) concentric with the peripheral face of the pull rod (4).
4. The anti-drop pull rod for the bullet train according to claim 3, wherein: a plurality of balls (10) are arranged at the bottom of the arc-shaped groove (15), and the peripheries of the balls (10) are abutted to the outer peripheral surface of the pull rod (4).
5. The anti-drop pull rod for the bullet train according to claim 4, wherein: the number of the balls (10) is two, and the balls are uniformly distributed on two sides of the through hole (12) at intervals.
6. The anti-drop pull rod for the bullet train according to claim 4, wherein: a placing groove (16) for placing the ball (10) is formed at the bottom of the arc-shaped groove (15).
7. The anti-drop pull rod for the bullet train according to claim 6, wherein: a limiting cover (17) is arranged on the notch of the placing groove (16), a limiting hole (18) is formed in one end, close to the pull rod (4), of the limiting cover (17), and the aperture of the limiting hole (18) is smaller than the diameter of the ball (10).
8. The anti-drop pull rod for the bullet train according to claim 4, wherein: the balls (10) are made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221087.9U CN213442552U (en) | 2020-09-30 | 2020-09-30 | Anti-drop pull rod for motor car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221087.9U CN213442552U (en) | 2020-09-30 | 2020-09-30 | Anti-drop pull rod for motor car |
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| Publication Number | Publication Date |
|---|---|
| CN213442552U true CN213442552U (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022221087.9U Active CN213442552U (en) | 2020-09-30 | 2020-09-30 | Anti-drop pull rod for motor car |
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| CN (1) | CN213442552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115107822A (en) * | 2022-06-23 | 2022-09-27 | 眉山中车制动科技股份有限公司 | Hook-shaped upper pull rod device |
-
2020
- 2020-09-30 CN CN202022221087.9U patent/CN213442552U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115107822A (en) * | 2022-06-23 | 2022-09-27 | 眉山中车制动科技股份有限公司 | Hook-shaped upper pull rod device |
| CN115107822B (en) * | 2022-06-23 | 2023-11-21 | 眉山中车制动科技股份有限公司 | Sickle-shaped upper pull rod device |
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