CN201516859U

CN201516859U - Reinforcement-free switch locking device

Info

Publication number: CN201516859U
Application number: CN2009200340281U
Authority: CN
Inventors: 宋志�; 丁召荣; 谢明军; 梅积刚; 王向庭; 王霖峰; 赵莉; 卢智; 吴燕; 翟文革
Original assignee: Xian Railway Signal Factory
Current assignee: Xian Railway Signal Co Ltd
Priority date: 2009-07-28
Filing date: 2009-07-28
Publication date: 2010-06-30
Anticipated expiration: 2019-07-28

Abstract

The utility model belongs to railway switch conversion locking devices, in particular to a reinforcement-free switch locking device especially suitable for operating rods of the railway switch conversion devices (switch machines). The reinforcement-free switch locking device is characterized by comprising locking iron (1), a lock block (2), a driving element (3), a pin shaft (4) and an operating rod (5), wherein the lock block (2) and the operating rod (5) are connected through the pin shaft (4), the pin block can rotate around a shaft center of the pin shaft (4), the locking iron (1) is fixed onto a bottom casing of a switch machine, and the operating rod (5) can slide in the switch machine, and has a sliding direction parallel to the length direction of the locking iron (1). The reinforcement-free switch locking device has simple structure and high reliability, guarantees the output force of the operating rod not to have obvious difference values in the switching process and the locking process of the switch machine, further ensures the requirements that a railroad switch conversion system is locked at 2mm, and is unlocked at 4mm, and directly replaces conversion locking devices of a plurality of domestic switch machines at present.

Description

No reinforcement conversion locking device

Technical field

The utility model belongs to railway switch conversion locking device, particularly is applicable to the no reinforcement conversion locking device of throw rod in the railway switch conversion equipment (switch machine).

Background technology

The conversion locking mechanism of present domestic switch pole mainly contains two classes, and a class is a rack-and-gear conversion locking device, and another kind of is dovetail type conversion locking device.The rack-and-gear transmission of rack-and-gear conversion locking device ends with the circular arc on the circular arc locking driving rack on the gear at the transmission stroke, and then the locking throw rod.Dovetail type conversion locking device drives with hydraulic actuating cylinder or ball-screw, finally carry out locking with the inclined-plane, still had obvious displacement by the locking part in the locking process, promptly conversion and locking process have overlapping, and under the same conditions, in the locking process on the switch pole power output compare that power output increases exponentially on the switching process throw rod, unfavorable to adjusting the switch closure index like this.The track switch converting system requires at switch closure section towing point place, switch machine locking when tongue and stock rail have the following gap of 2mm, switch machine locking not when tongue and stock rail have the above gap of 4mm, because dovetail type conversion locking device has reinforcement in the locking process, therefore when test 4mm, after the throw rod power output increased, elastic deformation increased everywhere, the 4mm locking takes place easily, has a strong impact on railway operation safety.If between tongue and the stock rail foreign matter is arranged, cause that the above gap of 4mm is arranged between tongue and the stock rail, the switch machine locking is also connected expression, and traffic safety can not guarantee.

In addition, owing to increase in locking process action bar power output, and concerning dovetail type conversion locking device, this power continues to keep behind the locking, be equivalent on connecting rod, add in advance a load, on the right impulsive force of Train Wheel is added to this load,, can directly destroys rod member or cause the rod member fracture by fatigue if gross load surpasses rod member load at failure or strength at repeated alternation.

Summary of the invention

The purpose of this utility model provides purchaseless conversion locking device, it is simple in structure, reliability is high, guaranteed that switch machine switching process and locking process action bar power output do not have obvious difference, and then the 2mm locking of assurance track switch converting system, 4mm is the requirement of locking not, and can directly replace the conversion locking device of several domestic switch machines at present.

The technical solution of the utility model is, no reinforcement conversion locking device, and it is characterized in that: comprise locking iron, lock dog, active member, bearing pin, throw rod, lock dog is connected by the bearing pin axle with throw rod, makes lock dog around the rotation of the axle center of bearing pin; The locking ferropexy is on the drain pan of switch machine, and throw rod slides in switch machine, and direction of slip is parallel with locking iron length direction; The bottom surface of active member is the plane, and both sides are the inclined-plane of symmetrical structure; Lock dog is symmetrically distributed with two inclined-planes up and down with central axis, between two ramps and two lower inclined planes angle be the lock dog anglec of rotation doubly; Two ramp symmetries extend to two inclined-planes, cooperate with the inclined-plane of active member, and two lower inclined plane symmetries extend to two cambered surfaces, cooperate with locking iron arc face, and locking iron two ends are cambered surface.

Described locking iron and lock dog circular arc fitting surface radius difference are less than 2mm.

Described locking iron can be used the elastic element restriction site, also can be spacing with stiffener.

Characteristics of the present utility model are: because locking iron 1 is fixed on the drain pan of switch machine (or on contact seat), in its length direction two ends a circular arc is arranged respectively; Throw rod 5 can slide in switch machine, and direction of slip is parallel with locking iron 1 length direction; The bottom surface of active member 3 is the plane, and both sides are the inclined-plane of symmetrical structure; Lock dog 2 is symmetrically distributed with two inclined-planes up and down with central axis, and angle is 2 times of the lock dog anglec of rotation between two ramps and two lower inclined planes, and when locking or release, under active member 3 effects, 2 of lock dogs rotate and enter locking or release like this.This locking device can directly be replaced the conversion locking device of part active service switch machine.

Below in conjunction with the embodiment accompanying drawing the utility model is described further.

Description of drawings

Fig. 1 is the utility model example structure scheme drawing;

Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 are the motion state diagrams in the different phase process.

Among the figure: 1, locking iron; 2, lock dog; 3, active member; 4, bearing pin; 5, throw rod; 6, locking arc; 7, inclined-plane.

The specific embodiment

Embodiment 1 is as shown in Figure 1: comprise locking iron 1, lock dog 2, active member 3, bearing pin 4, throw rod 5, lock dog 2 is connected by 4 of bearing pins with throw rod 5, and lock dog 2 can be rotated around the axle center of bearing pin 4; Locking iron 1 is fixed on the drain pan of switch machine (or on contact seat), in its length direction two ends a circular arc is set respectively; Throw rod 5 slides in switch machine, and direction of slip is parallel with locking iron 1 length direction; The bottom surface of active member 3 is the plane, and both sides are the inclined-plane 7 of symmetrical structure; Lock dog 2 is symmetrically distributed with two inclined-planes up and down with central axis, and angle is 2 times of the lock dog anglec of rotation between two ramps and two lower inclined planes; Two ramp symmetries extend to two hypotenuses, cooperate with the hypotenuse (inclined-plane 7) of active member 3, two lower inclined plane symmetries extend to two cambered surfaces, cooperate with the cambered surface (locking arc 6) of locking iron 1, lock dog 2 and active member 3 cooperate about two hypotenuses (inclined-plane 7) be used for transferring power, about the distance of two hypotenuses (inclined-plane 7) by the size decision of active member 3.The motion traverse of the distance decision throw rod 5 in the circular arc center of circle, locking iron 1 two ends.Locking iron 1 two ends are cambered surface, and other positions are designed according to concrete mechanism; Locking iron 1 and lock dog 2 circular arc fitting surface radius differences are less than 2mm.

Locking iron 1 can be used the elastic element restriction site, also can be spacing with stiffener, if locking iron 1 adopts elastic element spacing, external force on throw rod 5 acts on to locking iron 1 by bearing pin 4, lock dog 2, after this power surpasses setting value, locking iron 1 just can be thrown off, and then lock dog 2 can not continue by locking.The relative position of locking iron 1 detected just can realize squeezing the trouble expression.

When throw rod 5 is covered traverse, when lock dog 2 was about to rotate into locking, lock dog 2 pin-and-hole centers and locking iron 1 any end locking arc center of circle overlapped substantially, and distance is less than 2mm.

Exploded drawings explanation release and locking process below by each stage of the utility model:

As Fig. 1, this moment, the locking arc of locking iron 1 and lock dog 2 was closely connected, and active member 3 stop motions are also pushed down lock dog 2, and lock dog can not clickwise, and throw rod 5 can not move right under this state, is in locking states.

As Fig. 2, when active member 3 moves right, this locking device begins release, active member 3 moves right to disengaging plane, lock dog 2 left side, and lock dog 2 gets final product clickwise, after active member 3 moves to its inclined-plane, right side and inclined-plane, lock dog 2 right side contacts, active member 3 drives lock dog 2 around bearing pin 4 rotations, after lock dog 2 left circles cambered surfaces rotated locking iron 1 left circles cambered surface, throw rod just can slide to the right, had just finished the release of throw rod this moment.

As Fig. 3, after lock dog 2 left circles hooks produced locking iron 1 left circles cambered surface, active member 3 continued to move right, and drove lock dog 2 and slided to the right, and lock dog 2 drives throw rod 5 by bearing pin 4 and slides to the right.

As Fig. 4, active member 3 drives throw rods 5 and slides into the appropriate location, this moment the circular arc center of circle, lock dog right side and locking iron 1 right side circular arc distance of center circle from less than 2mm, lock dog is about to rotate into locking.

As Fig. 5, active member 3 continues to move right, and presses the lock dog clickwise, breaks away from lock dog 2 inclined-planes until active member 3 inclined-planes, and active member 3 continues to move right the certain locking degree of depth of generation.

When active member 3 during to left movement, release, conversion, locking process and aforementioned opposite, throw rod just can slip to the left or to the right under the drive of active member like this, and is locked in the terminal location of its motion.

Behind lock dog 2 rotary lockings, active member 3 continues motion, produces certain locking degree of depth, must remove this locking degree of depth earlier, could begin release, i.e. active member 3 necessary first counter motion one segment distances, and lock dog just can the contrarotation release.

Claims

1. there is not reinforcement conversion locking device, it is characterized in that: comprise locking iron (1), lock dog (2), active member (3), bearing pin (4), throw rod (5), lock dog (2) is connected by bearing pin (4) axle with throw rod (5), and lock dog (2) rotates around the axle center of bearing pin (4); Locking iron (1) is fixed on the drain pan of switch machine, and throw rod (5) slides in switch machine, and direction of slip is parallel with locking iron (1) length direction; The bottom surface of active member (3) is the plane, and both sides are the inclined-plane of symmetrical structure; Lock dog (2) is symmetrically distributed with two inclined-planes up and down with central axis, and angle is 2 times of the lock dog anglec of rotation between two ramps and two lower inclined planes; Two ramp symmetries extend to two inclined-planes, cooperate with the inclined-plane of active member (3), and two lower inclined plane symmetries extend to two cambered surfaces, cooperate with locking iron (1) cambered surface, and locking iron (1) two ends are cambered surface.

2. no reinforcement conversion locking device according to claim 1, it is characterized in that: described locking iron (1) and lock dog (2) circular arc fitting surface radius difference are less than 2mm.

3. no reinforcement conversion locking device according to claim 1, it is characterized in that: described locking iron (1) can be used the elastic element restriction site, also can be spacing with stiffener.