CN-119568228-B - Locking mechanism, switch machine cylinder and switch machine

CN119568228BCN 119568228 BCN119568228 BCN 119568228BCN-119568228-B

Abstract

The invention discloses a locking mechanism, a switch machine cylinder and a switch machine, wherein the locking mechanism comprises an outer locking plate, an inner locking plate, fastening bolts, cotters and spring washers, wherein the inner locking plate is respectively arranged at the front end and the rear end of the outer locking plate, the top of each vertically distributed fastening bolt is arranged at the center of each inner locking plate, the cotters horizontally penetrate through the top of each fastening bolt and the inner locking plate, the cotters are arranged on the outer sides of screws of the fastening bolts, the spring washers are sleeved outside the screws of the fastening bolts, the fastening bolts are used for fixedly connecting an externally fixed piece and an externally installed platform on which the fixed piece is to be installed, and the spring washers are arranged between the fastening bolts and the installation surfaces of the fixed piece. The anti-loosening device can conveniently and reliably play a role in loosening prevention on fastening bolts of various devices such as a switch machine, realizes a good anti-loosening effect, meets the requirements of users, and has great practical significance.

Inventors

ZHAO JIANFENG
LI FANGZHOU
WU WEIMAN
DU CHENGLONG
LI PAN
HUANG MIN
LIU ZHENYU
CHEN QIANG

Assignees

天津铁路信号有限责任公司

Dates

Publication Date: 20260508
Application Date: 20241204

Claims (9)

1. The anti-loosening mechanism is characterized by comprising an outer anti-loosening plate (4), an inner anti-loosening plate (3), a fastening bolt (1), a cotter pin (2) and a spring washer (5); the front end and the rear end of the outer anti-loosening plate (4) are respectively provided with an inner anti-loosening plate (3); the center position of each inner anti-loosening plate (3) is provided with the top of a vertically distributed fastening bolt (1); The top of the fastening bolt (1) and the inner anti-loosening plate (3) are horizontally provided with a cotter pin (2) in a penetrating way; a spring washer (5) is sleeved outside the screw rod (103) of the fastening bolt (1); the fastening bolt (1) is used for fixedly connecting an external fixed piece and an external mounting platform to which the fixed piece is to be mounted; A spring washer (5) located between the fastening bolt (1) and the mounting surface of the fixed member; A reserved gap J is reserved between a hexagonal limiting surface (3040) of a fastening bolt mounting hole (304) of the inner anti-loosening plate (3) and a hexagonal head anti-loosening surface (101) of a nut (104) of the fastening bolt (1); An inner anti-loosening plate limiting tooth (302) on the inner anti-loosening plate (3) is meshed with an outer anti-loosening plate limiting tooth (403) on the outer anti-loosening plate (4); Two sets of vertical limiting tooth combinations (301) which are distributed at intervals are arranged on the peripheral outer side wall of the inner anti-loosening plate main body (300); A vertical limiting surface (3013) at the bottom of the vertical limiting tooth assembly (301) is pressed on the upper surface of the outer anti-loosening plate (4) and used for preventing the outer anti-loosening plate (4) from upwards moving in the vertical direction; The outer anti-loosening plate (4) is sleeved on the two fastening bolts (1) simultaneously, so that the outer anti-loosening plate (4) cannot rotate, and the inner anti-loosening plate (3) and the fastening bolts (1) cannot rotate simultaneously, thereby realizing the simultaneous anti-loosening function of the two fastening bolts.
2. The anti-loosening mechanism of claim 1, wherein the fastening bolt (1) comprises a vertically-distributed screw (103) and a nut (104); the screw cap (104) is arranged at the top of the screw (103); Six hexagonal head anti-loosening surfaces (101) are circumferentially arranged around the nut (104); two cotter pin mounting holes (102) are horizontally penetrated through the screw cap (104).
3. The anti-loosening mechanism of claim 1, wherein the inner anti-loosening plate (3) comprises a hollow inner anti-loosening plate body (300); A fastening bolt mounting hole (304) vertically penetrating is formed in the inner side of the inner anti-loosening plate main body (300); The side walls around the fastening bolt mounting holes (304) are six hexagonal limiting surfaces (3040) distributed in a surrounding manner; A nut (104) for fastening the bolt (1) is arranged in the fastening bolt mounting hole (304); the circumferential outer side of the inner anti-loosening plate main body (300) is provided with a plurality of inner anti-loosening plate limiting teeth (302) which are arranged at equal intervals at the position between the two sets of vertical limiting teeth (301).
4. A locking mechanism as claimed in claim 3, wherein the spring washer (5) is provided inside the fastening bolt mounting hole (304) of the inner locking plate (3) and located on the upper circumferential outside of the screw (103) of the fastening bolt (1); and/or the number of the groups of groups, A spring washer (5) located in a gap between the screw (103) and the fastening bolt mounting hole (304); and/or the number of the groups of groups, Two sets of vertical limiting tooth combinations (301) are symmetrically distributed in rotation; each set of vertical limiting tooth combination (301) comprises a first limiting tooth (3011) and a second limiting tooth (3012); The cross section area of the first limiting tooth (3011) is larger than that of the second limiting tooth (3012); The bottom surfaces of the first spacing tooth (3011) and the second spacing tooth (3012) are vertical spacing surfaces (3013); and/or the number of the groups of groups, Two cotter pin mounting grooves (303) are horizontally arranged on the upper part of the inner anti-loosening plate main body (300) in a penetrating way; the two cotter pin mounting grooves (303) are symmetrically distributed in a rotating way; when the screw cap (104) of the fastening bolt (1) is positioned in the fastening bolt mounting hole (304), the two cotter pin mounting grooves (303) and the two cotter pin mounting holes (102) on the fastening bolt (1) are correspondingly arranged; The cotter pin (2) horizontally passes through one cotter pin mounting groove (303) on the inner anti-loosening plate main body (300) and a cotter pin mounting hole (102) on a screw cap (104) of the fastening bolt (1) corresponding to the cotter pin mounting groove (303); and/or the number of the groups of groups, The included angles between the central lines of any two adjacent inner anti-loosening plate limiting teeth (302) are equal; and/or the number of the groups of groups, The length of the cotter pin (2) is larger than the outer diameter of the inner anti-loosening plate (3).
5. The anti-loosening mechanism of claim 1, wherein the outer anti-loosening plate (4) comprises an outer anti-loosening plate body (400); the front end and the rear end of the outer anti-loosening plate main body (400) are respectively provided with an outer plate inner hole (401) which vertically penetrates through; Two outer plate inner holes (401) of the outer anti-loosening plate (4) are respectively sleeved outside the two inner anti-loosening plates (3); the inner side wall of each outer plate inner hole (401) is circumferentially provided with a plurality of outer anti-loosening plate limiting teeth (403) which are arranged at equal intervals.
6. The anti-loosening mechanism as claimed in claim 5, wherein the inner anti-loosening plate limiting teeth (302) on the inner anti-loosening plate (3) are located at a gap position between two adjacent outer anti-loosening plate limiting teeth (403) on the outer anti-loosening plate (4).
7. The anti-loosening mechanism as claimed in claim 5, wherein the vertical limiting teeth (301) on the inner anti-loosening plate (3) have tooth shapes of a first limiting tooth (3011) and a second limiting tooth (3012) that cover tooth shapes of two outer anti-loosening plate limiting teeth (403).
8. A switch machine cylinder, characterized by comprising a cylinder housing (10); The front end and the rear end of the cylinder shell (10) are respectively provided with a front cylinder seat (11) and a rear cylinder seat (12); the front cylinder block (11) is provided with a locking mechanism according to any one of claims 1 to 7.
9. A switch machine comprising a locking mechanism as claimed in any one of claims 1 to 7.

Description

Locking mechanism, switch machine cylinder and switch machine Technical Field The invention relates to the technical field of mechanical looseness prevention, in particular to a looseness prevention mechanism, a switch machine cylinder and a switch machine. Background The switch switching equipment state is good or bad, directly influences the safety of train. Along with the continuous promotion of urban rail driving density, in order to ensure driving safety, the requirement on the operating state of switch switching equipment is higher and higher. The switch machine is used as important turnout switching equipment, has the characteristics of high switching frequency, frequent application and large influence on line driving after equipment failure, and is always an important point and difficulty for field maintenance and repair. The switch machine is an important signal basic device for reliably switching the switch position, changing the switch opening direction, locking the switch tongue and reflecting the switch position, and can well ensure the driving safety, improve the transportation efficiency and improve the labor intensity of driving personnel. The quick-acting switch machine is suitable for quick switch of turnout for railway marshalling yard, greatly improves the marshalling efficiency of freight vehicles, and can quickly switch turnout to a designated position according to the system control requirement, thereby ensuring that the vehicles pass through turnout safely and reliably. In view of the fast action of the fast-acting switch machine, the action time is less than 0.8s, the vibration is large during the action, and the existing common anti-loosening design method cannot meet the anti-loosening requirement of fastening bolts on the switch machine. Therefore, there is an urgent need to develop a technology that can solve the above technical problems. Disclosure of Invention The invention aims at overcoming the technical defects in the prior art and provides a locking mechanism, a switch machine cylinder and a switch machine. The invention provides a locking mechanism which is characterized by comprising an outer locking plate, an inner locking plate, a fastening bolt, a cotter pin and a spring washer; the front end and the rear end of the outer anti-loosening plate are respectively provided with an inner anti-loosening plate; The center of each inner anti-loosening plate is provided with the top of a fastening bolt which is vertically distributed; the top of the fastening bolt and the inner anti-loosening plate are horizontally penetrated with a cotter pin; a spring washer is sleeved on the outer side of the screw rod of the fastening bolt; the fastening bolt is used for fixedly connecting an external fixed piece with an external mounting platform on which the fixed piece is to be mounted; and the spring washer is positioned between the fastening bolt and the mounting surface of the fixed piece. In addition, the invention also provides a switch machine cylinder, which comprises a cylinder shell; The front end and the rear end of the cylinder shell are respectively provided with a front cylinder seat and a rear cylinder seat; The front cylinder block is provided with the anti-loose mechanism. In addition, the invention also provides a switch machine, which comprises the anti-loose mechanism. Compared with the prior art, the technical scheme provided by the invention provides the anti-loosening mechanism, the switch machine cylinder and the switch machine, the structure design is scientific, the anti-loosening mechanism can conveniently and reliably exert an anti-loosening function on fastening bolts on various devices such as the switch machine, a good anti-loosening effect is realized, the requirements of users are met, and the anti-loosening mechanism has great practical significance. The invention relates to a locking mechanism of a quick-acting switch machine, in particular to a locking design which is reasonable in structure and convenient to install and can not meet locking requirements aiming at the problems of short switching time, large action impact vibration and the like of quick-acting switches used in hump marshalling yards. Drawings Fig. 1 is a schematic perspective view of a locking mechanism according to the present invention; Fig. 2 is a schematic diagram of a three-dimensional structure of a locking mechanism according to the present invention; FIG. 3 is a front view of a fastening bolt in the anti-loosening mechanism provided by the invention; Fig. 4 is a top view of a fastening bolt in the anti-loosening mechanism provided by the invention; Fig. 5 is a schematic perspective view of an inner anti-loosening plate in the anti-loosening mechanism according to the present invention; fig. 6 is a schematic perspective view of an outer anti-loosening plate in the anti-loosening mechanism according to the present invention; Fig. 7 is a schematic perspective view of a switch machin