阅读说明：本技术 一种制动轨螺栓防松装置 (Brake rail bolt anti-loosening device ) 是由 寇建设 史国珍 郭玉垚 许世雄 于 2021-08-13 设计创作，主要内容包括：本发明公开了一种制动轨螺栓防松装置,用于连接制动钳和制动轨,包括防松板；制动轨设置有多对制动轨通孔；每对制动轨通孔分别与一个制动钳左端相接；每个制动钳的左端在与制动轨通孔相对应的位置设置一对制动钳通孔；对于每个制动钳,两个六角头头部带孔螺栓分别贯穿通过一个弹簧垫圈的中心通孔、制动轨上一个制动轨通孔和制动钳上一个制动钳通孔后,与一个防转螺母连接；两个六角头头部带孔螺栓的螺帽六方外侧下部和两个弹簧垫圈的中上部外侧套有同一个防松板；每个螺栓的螺帽插接一个开口销；开口销底部与防松板的顶面相顶紧接触。本发明能够显著提高用于连接车辆减速器的制动轨与制动钳的六角头头部带孔螺栓的防松效果,保证连接可靠性。(The invention discloses a brake rail bolt anti-loosening device which is used for connecting a brake caliper and a brake rail and comprises an anti-loosening plate; the brake rail is provided with a plurality of pairs of brake rail through holes; each pair of brake rail through holes are respectively connected with the left end of a brake caliper; a pair of brake caliper through holes are formed in the left end of each brake caliper at positions corresponding to the brake rail through holes; for each brake caliper, two hexagonal-head perforated bolts respectively penetrate through a central through hole of a spring washer, a brake rail through hole on a brake rail and a brake caliper through hole on the brake caliper and then are connected with an anti-rotation nut; the same anti-loosening plate is sleeved on the lower parts of the hexagonal outer sides of the nuts of the two hexagonal-head holed bolts and the outer sides of the middle upper parts of the two spring washers; the nut of each bolt is inserted with a cotter pin; the bottom of the cotter pin is in abutting contact with the top surface of the anti-loose plate. The invention can obviously improve the anti-loosening effect of the hexagonal head holed bolt used for connecting the braking rail of the vehicle speed reducer and the braking caliper, and ensures the connection reliability.)

1. The anti-loosening device for the brake rail bolt is characterized by being used for connecting a plurality of brake calipers (101) with any one brake rail (102), and comprising an anti-loosening plate (1), a hexagonal head perforated bolt (2), an anti-rotating nut (3), a spring washer (4) and a split pin (5);

the brake rails (102) are longitudinally distributed, and a plurality of pairs of vertically through brake rail through holes are arranged from front to back at intervals;

each pair of brake rail through holes are respectively connected with the left end of a brake caliper (101) which is transversely distributed;

wherein, the left end of each brake caliper (101) is provided with a pair of vertically through brake caliper through holes which are spaced front and back at the position corresponding to the brake rail through hole;

for each brake caliper (101), two hexagonal-head perforated bolts (2) respectively penetrate through a central through hole of a spring washer (4), a brake rail through hole on a brake rail (102) and a brake caliper through hole on the brake caliper (101) from top to bottom in sequence, and the lower end parts of the two hexagonal-head perforated bolts are respectively fixedly connected with an anti-rotation nut (3) through threads;

wherein, the hexagonal lower parts around the nuts of the two hexagonal head holed bolts (2) and the outer sides of the middle upper parts of the two spring washers are sleeved with the same anti-loose plate (1);

the nut of each hexagonal head perforated bolt (2) is provided with a nut transverse through hole;

each nut transversely penetrates through the through hole and is respectively inserted with a cotter pin (5);

the bottom of the cotter pin (5) is in abutting contact with the top surface of the anti-loosening plate (1).

2. Brake rail bolt looseness prevention device according to claim 1, wherein the looseness prevention plate (1) comprises a looseness prevention base plate (11) and an anti-rotation plate (12);

the anti-loosening bottom plates (11) are longitudinally distributed;

the front end and the rear end of the left side and the rear side of the anti-loosening bottom plate (11) are respectively provided with an anti-loosening head (111);

the two anti-loosening heads (111) are symmetrically distributed in the front and back direction;

the top of each anti-loosening head (111) is provided with an anti-rotation plate (12) respectively;

wherein, the center of the anti-rotation plate (12) is provided with an anti-rotation tooth through hole (120);

the periphery of the anti-rotation tooth through hole (12) is provided with a plurality of anti-rotation tooth grooves (121);

each anti-loosening head (111) is provided with a loosening-proof head through hole (1110) at a position right below the anti-rotation tooth through hole (120);

the anti-rotation tooth through hole (120) is used for being sleeved on the outer side of a nut hexagon at the top of the bolt (2) with the hole at the head of the hexagon head;

the anti-loosening head through hole (1110) in the anti-loosening head (111) is used for placing the middle upper part of the spring washer (4);

wherein, the bottom of the cotter pin (5) is tightly contacted with the top surface of the anti-rotation plate (12).

3. The brake rail bolt looseness prevention device of claim 2, wherein the looseness prevention plate (1) further comprises: a rotation prevention shaft (13);

wherein, the middle parts of the front end and the rear end of each anti-rotation plate (12) are respectively provided with a first anti-rotation shaft mounting through hole (122);

each anti-rotation plate (12) is connected with one anti-loosening head (111) in the anti-loosening bottom plate (11) through two anti-rotation shafts (13) penetrating through the two first anti-rotation shaft mounting through holes (122).

4. The locking device for a brake rail bolt according to claim 3, wherein each anti-rotation shaft (13) is passed through a second anti-rotation shaft mounting through hole (110) reserved on the locking head (111) of the locking base plate (11) and a first anti-rotation shaft mounting through hole reserved on the anti-rotation plate (12) from bottom to top, and then the locking base plate (11) and the anti-rotation plate (12) are riveted.

5. The brake rail bolt looseness prevention device of claim 4, wherein the second rotation-preventing shaft installation through-hole (110) is an elongated through-hole.

6. The brake rail bolt looseness prevention device of claim 3, wherein the rotation prevention shaft (13) is provided with a rotation prevention shaft small diameter end portion (133), a rotation prevention shaft large diameter end portion (132) and a shaft shoulder (131) in this order from top to bottom;

the upper part of the small-diameter end part (133) of the rotation-preventing shaft is provided with a rotation-preventing shaft riveting hole (134) with an opening at the top.

7. The brake rail bolt looseness prevention device of claim 2, wherein the looseness prevention plate (1) further comprises: a support column (14);

two support columns (14) are respectively riveted at the left end and the right end of one side of the anti-loosening bottom plate (11) opposite to the two anti-loosening heads (111).

8. The brake rail bolt looseness prevention device of claim 7, wherein the support column (14) is provided with a support column small diameter end portion (142) and a support column large diameter end portion (141) in this order from top to bottom;

the upper part of the small-diameter end part (142) of the support column is provided with a support column riveting hole (143) with an opening top.

9. Brake rail bolt looseness prevention device according to any one of claims 1 to 8, wherein a rotation prevention plate (6) is provided at an upper middle position of a left end of the brake caliper (101);

anti-rotation nut accommodating gaps (60) are respectively arranged on the front side and the rear side of the anti-rotation platform (6);

two anti-rotation nut receiving notches (60) having side walls only on opposite sides and right sides;

two prevent changeing nut (3), lie in two respectively and prevent changeing nut and hold breach (60) to contact with the right side lateral wall that two prevent changeing nut and hold breach (60) respectively.

Technical Field

The invention relates to the technical field of gravity type vehicle speed reducers of railway hump grouping fields, in particular to a brake rail bolt anti-loosening device.

Background

At present, for a railway hump marshalling yard, a brake rail and a brake caliper of a gravity type vehicle speed reducer are fixed in a mode of being installed up and down through bolts, the mode is limited by an upper limit of the vehicle speed reducer, the brake rail bolts can only be installed from top to bottom, and the installation sequence comprises the brake rail bolts, a spring pad, the brake rail, the brake caliper and an anti-rotation nut.

Wherein, the anti-rotation nut is a rectangular or square nut. The anti-loosening measures of the brake rail bolt and the anti-rotation nut are generally as follows: the last threads of the internal threads in the anti-rotation nut adopt deformed threads, so that the pre-tightening friction force between the brake rail bolt and the internal threads in the anti-rotation nut is increased, and the anti-loosening effect is achieved.

However, the friction anti-loosening mode has low reliability, unstable anti-loosening effect and short service life. At present, in the use process of a gravity type vehicle speed reducer, openings of a brake rail need to be debugged regularly along with abrasion of the brake rail, and a brake rail bolt needs to be loosened and loosened every time the brake rail is debugged, wherein generally, the brake rail at a target brake position needs to be debugged once in the shortest half year, and the brake rail at an interval brake position needs to be debugged once in the shortest half month. Because the locking effect of the existing used brake rail bolt is poor, after the brake rail bolt is loosened and tightened for several times, the locking effect cannot be guaranteed, and the problem of loosening of individual brake rail bolts can occur every day, so that railway maintenance personnel need to spend a large amount of time to fasten the brake rail bolt. For example, 40-60 minutes of off-wheel truing time per day, most of which is used to tighten the brake rail bolts.

In addition, although the brake rail at the target brake position is used infrequently, if the existing mode of preventing looseness by friction is adopted, part of bolts are easy to loosen, and because the opening of the brake rail is debugged less frequently by the reducer at the target brake position, the brake rail bolts which are not loosened are easy to corrode after half a year or even a long time, so that the brake rail bolts cannot be loosened when the opening of the brake rail is debugged again, and the brake rail bolts can only be disassembled by a destructive mode, for example, the bolt caps of the brake rail bolts can only be damaged by a gas cutting mode, and the brake rail bolts can only be disassembled. The problem that a spring washer is damaged and separated exists on the site, and the bolt is easy to loosen due to disappearance of the pretightening force of the bolt.

In addition, as the brake rail bolt is easy to loosen, after the anti-rotation nut falls off, the vibration is generated by the brake release of the vehicle speed reducer, the nut of the brake rail bolt jumps upwards, occasionally, the bolt is clamped in the brake caliper or the brake rail bolt hole, the nut leaves the upper surface of the brake rail for a certain distance and often exceeds the lower limit of the locomotive, so that the events that the nut is cut off and the vehicle is rubbed and the locomotive is off are caused, and similar problems occur in individual stations.

Disclosure of Invention

The invention aims to provide a brake rail bolt anti-loosening device aiming at the technical defects in the prior art.

Therefore, the invention provides a brake rail bolt anti-loosening device which is used for connecting a plurality of brake calipers and any one brake rail and comprises an anti-loosening plate, a hexagonal head perforated bolt, an anti-rotating nut, a spring washer and a split pin;

the brake rails are longitudinally distributed, and a plurality of pairs of vertically through brake rail through holes are arranged at intervals from front to back;

each pair of brake rail through holes are respectively connected with the left end of a brake caliper which is transversely distributed;

the left end of each brake caliper is provided with a pair of vertically-through brake caliper through holes which are spaced front and back and penetrate vertically at the position corresponding to the brake rail through hole;

for each brake caliper, two hexagonal-head hole bolts respectively penetrate through a central through hole of a spring washer, a brake rail through hole on a brake rail and a brake caliper through hole on the brake caliper from top to bottom in sequence, and the lower end parts of the two hexagonal-head hole bolts are fixedly connected with an anti-rotation nut through threads;

the hexagonal lower parts of the peripheries of the nuts of the two hexagonal head holed bolts and the outer sides of the middle upper parts of the two spring washers are sleeved with the same anti-loosening plate;

the nut of each hexagonal head bolt with a hole is provided with a nut transverse through hole;

each nut transversely penetrates through the through hole and is respectively inserted with a cotter pin;

the bottom of the cotter pin is in abutting contact with the top surface of the anti-loose plate.

Preferably, the anti-loosening plate comprises an anti-loosening bottom plate and an anti-loosening plate;

the anti-loosening bottom plates are longitudinally distributed;

the front end and the rear end of the left side and the right side of the anti-loosening bottom plate are respectively provided with an anti-loosening head;

the two anti-loosening heads are symmetrically distributed in the front and the back;

the top of each anti-loosening head is provided with an anti-rotating plate;

wherein, the center of the anti-rotation plate is provided with an anti-rotation tooth through hole;

the periphery of the anti-rotation tooth through hole is provided with a plurality of anti-rotation tooth grooves;

each anti-loosening head is provided with an anti-loosening head through hole at a position right below the anti-loosening tooth through hole;

the anti-rotation tooth through hole is used for being sleeved on the outer side of a nut hexagon at the top of the bolt with the hole at the head of the hexagon head;

the anti-loosening head through hole is formed in the anti-loosening head and used for placing the middle upper part of the spring washer;

wherein, the bottom of the cotter is tightly contacted with the top surface of the anti-rotation plate.

Preferably, the anti-loosening plate further comprises: a rotation prevention shaft;

the middle parts of the front end and the rear end of each anti-rotation plate are respectively provided with a first anti-rotation shaft mounting through hole;

each anti-rotation plate is connected with one anti-loosening head in the anti-loosening bottom plate through two anti-rotation shafts penetrating through the two first anti-rotation shaft mounting through holes.

Preferably, each anti-rotation shaft correspondingly penetrates through a second anti-rotation shaft mounting through hole reserved in the anti-rotation head of the anti-rotation bottom plate and a first anti-rotation shaft mounting through hole reserved in the anti-rotation plate from bottom to top, and then the anti-rotation bottom plate is riveted with the anti-rotation plate.

Preferably, the second rotation-preventing shaft mounting through hole is a long strip-shaped through hole.

Preferably, the anti-rotation shaft is sequentially provided with an anti-rotation shaft small-diameter end part, an anti-rotation shaft large-diameter end part and a shaft shoulder from top to bottom;

the upper part of the small-diameter end part of the anti-rotation shaft is provided with an anti-rotation shaft riveting hole with an opening at the top.

Preferably, the anti-loosening plate further comprises: a support pillar;

two ends about two relative one sides of anti-loosening head on the locking bottom plate, the riveting has a support column respectively.

Preferably, the support column is provided with a support column small-diameter end part and a support column large-diameter end part in sequence from top to bottom;

the upper portion of support column path end portion has open-topped support column riveting hole.

Preferably, a rotation prevention platform is arranged at the middle position of the upper part of the left end of the brake caliper;

anti-rotation nut accommodating gaps are respectively formed in the front side and the rear side of the anti-rotation platform;

two anti-rotation nut receiving notches having side walls only on opposite sides and right sides;

two prevent changeing the nut, be located two respectively and prevent changeing the nut and hold the breach to contact with two right side lateral walls that prevent changeing the nut and hold the breach respectively.

Compared with the prior art, the brake rail bolt anti-loosening device provided by the invention has the advantages that the structural design is scientific, the anti-loosening effect of the hexagonal head perforated bolt (namely the brake rail bolt) for connecting the brake rail of the vehicle speed reducer and the brake caliper can be obviously improved, the connection reliability between the brake rail of the vehicle speed reducer and the brake caliper is ensured, and the brake rail bolt anti-loosening device has great production practice significance.

Compared with the prior art, the anti-loosening device for the brake rail bolt provided by the invention also has the following technical effects:

1. after the hexagonal head perforated bolt is fastened in place, the anti-loose plate does not need to be installed in an elastic mode through the hexagonal head perforated bolt, installation time is saved, the hexagonal head perforated bolt does not need to rotate backwards after being screwed, initial pre-tightening force of the hexagonal head perforated bolt is increased, and the anti-loose effect of the hexagonal head perforated bolt is more obvious.

2. The locking bottom plate is sleeved on the periphery of the spring washer, so that the spring washer is prevented from being broken and separated, the pretightening force of the brake rail bolt is kept, the hexagonal head part perforated bolt is effectively prevented from loosening, the spring washer is not required to be replaced before debugging even if being broken, and the field maintenance amount is reduced.

3. The anti-loosening plate is arranged above the brake rail, so long as the anti-loosening plate is well installed, the hexagonal head bolt with holes does not have the possibility of loosening, the installation state of the hexagonal head bolt with holes is convenient to check, video remote check can be performed even through video equipment, and a good technical basis is provided for detection equipment.

4. The split pin hole is formed in the bolt cap of the bolt with the hole in the hexagonal head, and connection reliability is improved.

5. The installation of locking axle and support column all adopts the riveted mode, need not the welding, has further improved the reliability of connecting.

Drawings

FIG. 1a is a schematic perspective view of a brake rail bolt anti-loosening device provided by the present invention, and a brake caliper and a brake rail in an installation state;

FIG. 1b is a front view of a brake rail bolt locking device provided in the present invention, mounted with a brake caliper and a brake rail;

FIG. 1c is a left side view of a brake rail bolt locking device of the present invention installed with a brake caliper and a brake rail;

FIG. 1d is a top view of a brake rail bolt locking device of the present invention installed with a brake caliper and a brake rail;

fig. 1e is a schematic perspective view of a brake caliper in the brake rail bolt anti-loosening device provided by the present invention;

FIG. 1f is a front view of a brake caliper of the brake rail bolt anti-loosening apparatus according to the present invention;

FIG. 1g is a top view of a brake caliper of the brake rail bolt anti-loosening apparatus according to the present invention;

FIG. 1h is a left side view of a brake caliper of the brake rail bolt anti-release apparatus of the present invention;

FIG. 1i is a right side view of a brake caliper of a brake rail bolt anti-loosening apparatus according to the present invention;

FIG. 1j is a front cross-sectional view of a brake rail in a brake rail bolt anti-release apparatus provided in accordance with the present invention;

FIG. 1k is a top view of a section of a brake rail in a brake rail bolt anti-loosening apparatus according to the present invention;

FIG. 2a is an elevational view of a brake rail bolt check assembly provided in accordance with the present invention, shown assembled without a brake caliper and a brake rail;

FIG. 2b is a left side view of a brake rail bolt anti-loosening apparatus of the present invention in an assembled state when not installed with a brake caliper and a brake rail;

FIG. 2c is a top view of a brake rail bolt retainer according to the present invention, shown assembled without a brake caliper and a brake rail;

FIG. 3a is a front view of an anti-loosening plate of a brake rail bolt anti-loosening apparatus according to the present invention;

FIG. 3b is a left side view of a brake rail bolt anti-loosening apparatus of the present invention, showing an anti-loosening plate;

FIG. 3c is a top view of a brake rail bolt anti-loosening apparatus of the present invention, showing an anti-loosening plate;

FIG. 3d is a top view of a bottom plate of the check device for brake rail bolts according to the present invention;

FIG. 3e is a left side view of a bottom plate of the check device for brake rail bolts according to the present invention;

FIG. 3f is a top view of an anti-rotation plate of the anti-rotation device for preventing the brake rail bolt from loosening according to the present invention;

FIG. 3g is a left side view of an anti-rotation plate of the anti-rotation device for preventing loosening of a brake rail bolt according to the present invention;

FIG. 4 is a schematic structural view of an anti-loosening shaft in an anti-loosening plate of the brake rail bolt anti-loosening apparatus according to the present invention;

FIG. 5 is a schematic structural diagram of a support column in an anti-loosening plate of the brake rail bolt anti-loosening apparatus according to the present invention;

in the figure, 101, a brake caliper; 102. braking the rail;

1. an anti-loosening plate; 2. a hexagonal head bolt with a hole; 3. an anti-rotation nut; 4. a spring washer; 5. a cotter pin; 6. a rotation prevention platform;

11. a locking bottom plate; 110. a second anti-rotation shaft mounting through hole; 111. anti-loose head;

12. an anti-rotation plate; 120. a rotation preventing tooth through hole; 121. an anti-rotation tooth socket;

13. a rotation prevention shaft; 131. a shaft shoulder; 132. the large-diameter end part of the rotation preventing shaft; 133. the small-diameter end part of the rotation preventing shaft; 134. the anti-rotation shaft is riveted with the hole;

14. a support pillar; 141. the large-diameter end part of the support column; 142. the small-diameter end part of the support column; 143. the support column riveting hole.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood 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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

Referring to fig. 1a to 5, the present invention provides a brake rail bolt looseness prevention device for connecting a plurality of brake calipers 101 and any one brake rail 102, which comprises a looseness prevention plate 1, a hexagonal-head holed bolt 2, an anti-rotation nut 3, a spring washer 4 and a cotter pin 5;

the brake rails 102 which are longitudinally distributed are provided with a plurality of pairs of vertically through brake rail through holes at intervals from front to back;

each pair of brake rail through holes are respectively connected with the left end of a brake caliper 101 which is transversely distributed;

it should be noted that, for the present invention, each brake rail is mounted with a plurality of brake calipers, and two brake rail through holes 1021 (i.e. a pair of brake rail through holes) are arranged at the brake rail and each brake caliper;

wherein, the left end of each brake caliper 101 is provided with a pair of vertically through brake caliper through holes 1011 which are spaced front and back and penetrate vertically at the position corresponding to the brake rail through hole 1021;

for each brake caliper 101, two hexagonal-head holed bolts 2 respectively penetrate through a central through hole of a spring washer 4, a brake rail through hole on a brake rail 102 and a brake caliper through hole on the brake caliper 101 from top to bottom in sequence, and the lower end parts of the two hexagonal-head holed bolts are respectively fixedly connected with an anti-rotation nut 3 through threads;

the lower parts of the hexagonal outer sides of nuts at the tops of the two hexagonal-head holed bolts 2 and the outer sides of the middle upper parts of the two spring washers are sleeved with the same anti-loosening plate 1;

wherein, a nut transverse through hole is respectively arranged on the nut (namely a hexagonal cap) of each hexagonal head holed bolt 2;

each nut transversely penetrates through the through hole and is respectively inserted with a cotter pin 5;

the bottom of the cotter 5 is in abutting contact with the top surface of the anti-loose plate 1.

In the present invention, the cross-sectional shape of the anti-rotation nut 3 is rectangular.

In the present invention, in a specific implementation, the bottom of the brake rail 102 has a longitudinally distributed brake caliper left end connecting part accommodating groove 1020;

a caliper left end connecting portion receiving groove 1020 for receiving a plurality of caliper left end connecting portions 1010 provided at the left end of the caliper 101;

a vertically through brake caliper through hole 1011 is respectively arranged at the front end and the rear end of the brake caliper left end connecting part 1010;

the caliper through hole 1011 is provided to correspond to the brake rail through hole 1021 in the brake rail 102.

In the present invention, referring to fig. 3a to 3c, in a specific implementation, the anti-loosening plate 1 includes an anti-loosening bottom plate 11 and an anti-loosening plate 12;

the anti-loosening bottom plate 11 is longitudinally distributed;

the front end and the rear end of the anti-loosening bottom plate 11 are respectively provided with an anti-loosening head 111;

the two anti-loosening heads 111 are symmetrically distributed in the front and back direction;

the top of each anti-loosening head 111 is provided with an anti-rotation plate 12;

wherein, the central position of the anti-rotation plate 12 is provided with an anti-rotation tooth through hole 120;

the periphery of the anti-rotation tooth through hole 12 is provided with a plurality of anti-rotation tooth grooves 121;

each anti-loosening head 111 is provided with an anti-loosening head through hole 1110 at a position right below the anti-loosening tooth through hole 120;

the anti-rotation tooth through hole 120 is used for being sleeved on the outer side of a nut hexagon of the bolt 2 with the hole at the head part of the hexagon head;

an anti-loosening head through hole 1110 on the anti-loosening head 111 for placing the middle upper part of the spring washer 4;

wherein, the bottom of the cotter 5 is in abutting contact with the top surface of the anti-rotation plate 12.

It should be noted that, the anti-rotation plate 12 is provided with an anti-rotation thread through hole 120 for matching with the hexagonal head bolt 2, and the anti-rotation thread through hole 120 is provided with an anti-rotation thread groove 121 similar to a quincunx wrench.

In the present invention, in a specific implementation, the anti-loosening plate 1 further includes: an anti-rotation shaft 13;

wherein, the middle parts of the front and rear ends of each anti-rotation plate 12 are respectively provided with a first anti-rotation shaft mounting through hole 122;

each anti-rotation plate 12 is connected to one anti-loosening head 111 of the anti-loosening base plate 11 through two anti-rotation shafts 13 penetrating through the two first anti-rotation shaft mounting through holes 122.

In a specific implementation, referring to fig. 4, each anti-rotation shaft 13 correspondingly penetrates through the second anti-rotation shaft mounting through hole 110 reserved on the anti-rotation bottom plate 11 (specifically, on the anti-rotation head 111) and the first anti-rotation shaft mounting through hole 122 (circular through hole) reserved on the anti-rotation plate 12 from bottom to top, and then the anti-rotation bottom plate 11 and the anti-rotation plate 12 are riveted.

In concrete implementation, the second anti-rotation shaft mounting through hole 110 is a strip-shaped through hole, the transverse length of the second anti-rotation shaft mounting through hole is larger than the diameter of the anti-rotation shaft 13, and the anti-rotation shaft 13 can rotate left and right by a certain angle along the second anti-rotation shaft mounting through hole 110.

It should be noted that, due to the design of the second anti-rotation shaft installation through hole 110 on the anti-rotation base plate 11, the anti-rotation plate 12 can rotate on the anti-rotation base plate 11 by a certain angle, which is approximately equal to the angle between two teeth (i.e. two anti-rotation tooth grooves 121 on the anti-rotation tooth through hole 120), so as to achieve the purpose that when the nut of the brake rail bolt (i.e. the hexagonal head bolt 2) is screwed in place, even if six corners of the nut of the hexagonal head bolt 2 horizontally rotate to any position (i.e. the position of six corners, when the nut is screwed in place, different position angles can be set, for example, when the upper and lower sides of the regular hexagonal nut are parallel to each other, or the left and right sides of the nut are parallel to each other, the anti-rotation tooth grooves 121 on the anti-rotation plate 12 can be aligned with the nut of the hexagonal head bolt 2, the anti-rotation plate assembly can be smoothly installed, and the two anti-rotation plates 12 in the anti-rotation plate 1 can be respectively installed on two brake rail bolts (i.e. the hexagonal head bolt with the anti-rotation plate 12 The bolt 2) is arranged on the nut.

In the present invention, in terms of specific implementation, referring to fig. 4, the anti-rotation shaft 13 is a stepped shaft structure with a shoulder;

the anti-rotation shaft 13 is provided with an anti-rotation shaft small-diameter end part 133, an anti-rotation shaft large-diameter end part 132 and a shaft shoulder 131 in sequence from top to bottom;

an anti-rotation shaft riveting hole 134 with an open top is formed in the upper portion of the anti-rotation shaft small-diameter end portion 133;

it should be noted that, in the specific implementation, the large-diameter end 132 of the anti-rotation shaft vertically upwards passes through the strip hole (i.e., the second anti-rotation shaft installation through hole 110) on the anti-loosening bottom plate 11, the small-diameter end 133 of the anti-rotation shaft vertically upwards passes through the first anti-rotation shaft installation through hole (circular through hole) on the anti-rotation plate 12, and then is riveted through the anti-rotation shaft riveting hole 134, the anti-rotation shaft 13 is tightly riveted on the top of the anti-rotation plate 12, because the anti-rotation shaft 13 is a stepped shaft, the fit clearance between the anti-rotation plate 12 and the anti-loosening bottom plate 11 is ensured, and in addition, the strip hole (i.e., the second anti-rotation shaft installation through hole 110) on the anti-loosening bottom plate 11 and the fit clearance between the anti-rotation shafts 13 allow the anti-rotation plate 12 to rotate a certain angle on the anti-loosening bottom plate 11.

In the present invention, in a specific implementation, the anti-loosening plate 1 further includes: a support column 14;

the left end and the right end of the opposite side of the two anti-loosening heads 111 on the anti-loosening bottom plate 11 are respectively riveted with a support column 14.

In a specific implementation, referring to fig. 5, the supporting column 14 is also a step shaft;

the support column 14 is provided with a support column small-diameter end part 142 and a support column large-diameter end part 141 in sequence from top to bottom;

the support post small diameter end 142 has a support post rivet hole 143 at its upper portion.

It should be noted that the small-diameter end 142 of the support column vertically passes through the support column through hole 112 reserved in the locking head 11 of the locking bottom plate 11, and then is riveted through the support column riveting hole 143.

In the present invention, in a specific implementation, referring to fig. 1b, a rotation prevention table 6 is arranged at the middle position of the upper part of the left end of the brake caliper 101;

anti-rotation nut accommodating gaps 60 are respectively formed in the front side and the rear side of the anti-rotation platform 6;

two anti-rotation nut receiving notches 60 having side walls only on opposite sides (i.e., the inside) and the right side;

the two anti-rotation nuts 3 are respectively located in the two anti-rotation nut accommodating notches 60 and are respectively in contact with the right side walls of the two anti-rotation nut accommodating notches 60. Therefore, the anti-rotation nut accommodating notch can prevent the anti-rotation nut 3 from rotating towards the direction of the right side wall of the anti-rotation nut accommodating notch.

That is, the bottom, left side and outside directions of each anti-rotation nut receiving notch 60 are open (both open).

In order to more clearly understand the technical solution of the present invention, the installation process of the present invention is explained below.

Firstly, referring to fig. 1a, for any brake caliper 101, the top of the left end of the brake caliper 101 is connected with brake rails 102 which are longitudinally distributed, and a hexagonal head perforated bolt 2 sequentially penetrates through a spring washer 4, the brake rail 102 and the brake caliper 101 from top to bottom and then is connected with an anti-rotation nut 3; the anti-rotation nut 3 cannot rotate due to the limiting effect of the anti-rotation platform 6 on the brake caliper 102;

and then, fastening the two hexagonal-head holed bolts 2 according to the pre-required tightening torque, sleeving anti-loosening plates 1 on the hexagonal outer sides of the nuts of the two hexagonal-head holed bolts 2 and the outer sides of the middle upper parts of the two spring washers 4, and then penetrating cotter pins on the nuts of each hexagonal-head holed bolt 2 to finish the installation of the anti-loosening device for the brake rail bolt.

Wherein, to the anti-loosening plate 1, when the nut outside of two cap band hole bolts 2 is installed, can rotate the anti-loosening plate 12 of the both ends top of anti-loosening plate 1 respectively, make the anti-rotation thread groove 121 (can be for short to change the tooth) that prevents that the tooth through-hole 120 all around edge of preventing of anti-loosening plate 12 has align with the nut (being hexagonal cap promptly) of hexagonal head band hole bolt 2, then the installation.

It should be noted that, for the present invention, when the brake rail bolt (i.e. the hexagon head bolt with holes 2) is under the external force and will become loose, the anti-rotation nut 3 is blocked on the anti-rotation platform 6 of the brake caliper 102 and will not rotate, only the hexagon head bolt with holes 2 rotates, and the rotation of the hexagon head bolt with holes 2, the nut thereon will drive the anti-rotation plate 12 to rotate together, and when the anti-rotation shaft 13 on the anti-rotation plate 12 rotates to one side of the long strip circular hole (i.e. the second anti-rotation shaft mounting through hole 110) on the anti-loosening bottom plate 11, the nut on the hexagon head bolt with holes 2 cannot rotate any more, so as to limit the rotation of the nut on the hexagon head bolt with holes 2, and further limit the rotation of the whole hexagon head bolt with holes 2, and finally achieve the function and effect of the anti-loosening of the hexagon head bolt with holes.

In summary, compared with the prior art, the brake rail bolt anti-loosening device provided by the invention has a scientific structural design, can remarkably improve the anti-loosening effect of the hexagonal head holed bolt (namely the brake rail bolt) for connecting the brake rail of the vehicle speed reducer and the brake caliper, ensures the connection reliability between the brake rail of the vehicle speed reducer and the brake caliper, and has great production practice significance.

Compared with the prior art, the anti-loosening device for the brake rail bolt provided by the invention also has the following technical effects:

1. after the hexagonal head perforated bolt is fastened in place, the mounting and preventing rotating plate does not need to be loosened or tightened through the hexagonal head perforated bolt, the mounting time is saved, the hexagonal head perforated bolt does not need to be rotated after being screwed, the initial pre-tightening force of the hexagonal head perforated bolt is increased, and the anti-loosening effect of the hexagonal head perforated bolt is more obvious.

2. The locking bottom plate is sleeved on the periphery of the outer side of the middle upper part of the spring washer (particularly in the locking head through hole 1110 on the locking head 111 of the locking bottom plate 11), so that the spring washer can be prevented from being separated after being damaged, the pretightening force of the brake rail bolt is kept, the bolt is also effectively prevented from loosening, even if the spring washer is damaged, the spring washer does not need to be replaced before debugging, and the field maintenance amount is reduced.

3. Prevent that the flitch arranges the top of braking rail in, as long as the installation of preventing the flitch is good, hexagonal head eyebolt just does not have not hard up possibility, is convenient for inspect the mounted state of hexagonal head eyebolt, can carry out video remote check through video equipment even, provides good technical basis for check out test set.

4. The split pin hole is formed in a nut of the hexagonal head bolt with the hole, and therefore connection reliability is improved.

5. The installation of locking axle and support column all adopts the riveted mode, need not the welding, has further improved the reliability of connecting.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.