CN2314999Y

CN2314999Y - Low limit large space inner gripping lever type wheel catcher

Info

Publication number: CN2314999Y
Application number: CN 97227676
Authority: CN
Inventors: 周荣; 李寿恒; 耿协和
Original assignee: Beijing Iron Research New Technology Research Institute; Shenyang Kexing Railway Automation Co Ltd
Current assignee: Beijing iron research new technology research institute; Shenyang Kexing railway Automation Co Ltd
Priority date: 1997-09-25
Filing date: 1997-09-25
Publication date: 1999-04-21
Anticipated expiration: 2007-09-25

Abstract

The utility model relates to a wheel catcher with low limit and a large space in an inner gripping lever type, which is suitable for a road track with the wheel-catching need at a middle station or a tail station of a marshalling line of a railway marshalling station, and belongs to ground equipment for the deceleration and the wheel catching work of a railway vehicle. The utility model is mainly characterized in that a four-bar linkage mechanism is formed in the way that a pair of brake pliers and a support base are connected by double rotary arms, a force transmission mechanism between a cylinder and the pair of brake pliers is a reinforced crank of an eccentric wheel structure, and the crank is connected with the pair of brake pliers in an extrusion mode. A reinforced mechanism has the maximum lever ratio during the braking process, the acting force is enlarged for times during the braking process, and the travel range of the cylinder is reduced when the brake is relieved. Thereby, the utility model satisfies the requirement that the low limit and the large space are needed when the wheel catcher is used on an arrival-departure track.

Description

The low big spacing of the gauge anti-device that slips of lever that makes up tong

The low big spacing of gauge of the utility model anti-device that slips of lever that makes up tong is applicable to that marshaling yard departure track afterbody or intermediate station need prevent on the circuit of wagon running away, makes humping of cars speed slow down, stop, and belongs to the rolling stock anti-wayside equipment that slips that slows down.

The anti-slide facility of marshaling yard departure track or intermediate station mainly is a brake shoe at present, and armrest work industry labour intensity is big, dangerous, also influences efficient.And the anti-slide device (comprising car retarder, stopping device) that uses in the marshalling station is the single shaft clamp type structure, because its brake clamp vertical distance apart from the rail end face when buffering horizontal throw big, the side is little, the top gauge is too high when promptly alleviating, lateral opening is narrow partially, can only be limited in the marshalling station and use, be unsuitable for hair line.

The purpose of this utility model is exactly to overcome the deficiency that above-mentioned existing anti-slide device exists, design a kind of brake clamp that when alleviating, can reach apart from the vertical distance little (circle, top is low) of rail, side horizontal throw big (lateral opening is big), and the anti-slide device of enough braking forces is arranged.

The purpose of this utility model can realize in the following manner.Protect to slip and have the basic comprising that vehicle anti-skid device is provided with cylinder, cylinder piston rod, force transmission mechanism, brake clamp, braking rail, bottom cut board, bearing, pressing plate etc. now, the technical program feature is: brake clamp and bearing connect to form four-bar linkage through pivoted arm, force transmission mechanism is the reinforcement crank throw transmission device of eccentric wheel type, crank throw is provided with support roller, it passes between the pincers with system is that squash type is connected: cylinder piston rod is connected with cylinder impeller-hub on the crank throw, crank throw is on anchor shaft is fixed on bearing perpendicular to bearing, and formation power is amplified lever construction thus.

The utility model has following advantage compared with the prior art: 1. owing to adopted four-bar linkage between brake clamp and bearing, make minimum gauge and the maximum side spacing of brake clamp when alleviating all can satisfy the requirement of using on the line; 2. the reinforcement crank throw transmission device that is adopted is that the power of eccentric wheel structure is amplified lever, when braking rail contact wheel maximum lever ratio is arranged, thereby has increased braking force, also can dwindle the cylinder stroke during alleviation.

Below in conjunction with drawings and Examples the utility model is further described:

Fig. 1 is the utility model integral structure front elevation, and dotted line is depicted as and alleviates the position among the figure, and solid line is depicted as retarder location.

Fig. 2 is a reinforcement crank throw structural representation

Fig. 3 is the left view that fork-shaped supports among Fig. 2

Fig. 4 is the schematic diagram that reinforcement crank throw power is amplified, and dotted line is depicted as retarder location among the figure, and solid line is for alleviating the position.

The utility model is described in further detail below in conjunction with drawings and Examples.

The support of designed reinforcement crank throw 3 is fork-shaped, anchor shaft 4 is at the fork root, overlapping the roller wheel shaft 6 of support roller 5 and the both sides that cylinder impeller-hub 11 is located at prong respectively, release or when drawing in the position when cylinder piston rod 2 is positioned at from cylinder 1, crank throw 3 is that the axle center is positioned at conter clockwise raise up position or position, cw whereabouts (Fig. 1,2,4) with anchor shaft 4 thereupon.

The formation of four-bar linkage is, two

pivoted arms

14,15 two ends parallel to each other connect brake clamp 7 through two rotating

shafts

9,10 respectively, connect bearing 18 through two pivoted arm rotating shafts 16,17, the minimum length of

pivoted arm

14,15 should guarantee to brake 7 energy normal displacements, its extreme length should guarantee when cylinder piston rod 2 when drawing in the position of cylinder, 14,15 of two pivoted arms are not by locked.When cylinder piston rod 2 is arranged in from position that cylinder 1 is released, this thrust is delivered to brake clamp by reinforcement crank throw 3, four-bar linkage is that fulcrum moves to retarder location with its pivoted arm rotating shaft 16,17, brake clamp 37 is thereupon in the come-up position, when piston rod 2 is positioned at the position of drawing in cylinder 1, four-bar linkage will move to alleviates the position, and brake clamp 7 is thereupon at position, whereabouts (Fig. 1).

Principle such as Fig. 2, shown in Figure 4 that reinforcement crank throw transmission device power is amplified, when cylinder piston rod 2 is pushed into braking position with crank throw 3, its thrust is N2, the arm of force is L2, and the application force between support roller 5 and the brake clamp 7 is N1, the arm of force is L1, equate N1L1=N2L2 or N1/N2=L2/L1 according to two moments of lever principle, that is to say the application force N1 of support roller 5 and the ratio of cylinder thrust N2, the center that is decided by cylinder impeller-hub 11 to the center of the centre distance L2 of anchor shaft 4 and support roller rotating shaft 6 is to the ratio of the centre distance L1 of anchor shaft 4.When braking position, distance L 2 is much larger than distance L 1, and the thrust N2 of cylinder is constant, so the application force N1 of glancing impact obtains amplifying.

Owing to adopted four-bar linkage, satisfied the requirement of the low gauge of the big spacing of brake clamp when the release position, reinforcement crank throw transmission device is arranged in addition, when braking rail contact traveling wheel of vehicle, force-increasing mechanism has maximum lever ratio, scalable 3～4 times of the application force of glancing impact, the stroke of cylinder can dwindle during alleviation, and the cylinder stroke is equal substantially with the brake clamp stroke.The anti-slide device of said structure is that bilateral is installed and used on the line.

Claims

1. the big spacing of the low gauge anti-device that slips of lever that makes up tong, comprise cylinder, cylinder piston rod, force transmission mechanism, brake clamp, braking rail, bottom cut board, bearing, pressing plate, it is characterized in that: brake clamp and bearing connect to form four-bar linkage through pivoted arm, force transmission mechanism is the reinforcement crank throw transmission device of eccentric wheel type, crank throw is provided with support roller, it with brake clamp between be that squash type is connected, cylinder piston rod is connected with cylinder impeller-hub on the crank throw, crank throw is on anchor shaft is fixed on bearing perpendicular to bearing, and formation power is amplified lever construction thus.

2. the big spacing of the low gauge according to claim 1 anti-device that slips of lever that makes up tong, it is characterized in that described four-bar linkage, its structure is, two pivoted arms parallel to each other (14,15) two ends connect brake clamp (7) through two rotating shafts (9,10) respectively, connect bearing (18) through two pivoted arm rotating shafts (16,17), the minimum length of pivoted arm (14,15) should guarantee the normal displacement of brake clamp (7) energy, its extreme length should guarantee when cylinder piston rod (2) when drawing in the position of cylinder, between two pivoted arms (14,15) not by locked; When cylinder piston rod is arranged in from position that cylinder is released, four-bar linkage is that fulcrum moves to retarder location with its pivoted arm rotating shaft, and brake clamp is thereupon in the come-up position, when cylinder piston rod is positioned at the position of drawing in cylinder, four-bar linkage will move to alleviates the position, and brake clamp is thereupon in the position, whereabouts.

3. the big spacing of the low gauge according to claim 1 anti-device that slips of lever that makes up tong, it is characterized in that: the support of described reinforcement crank throw (3) is fork-shaped, anchor shaft (4) is at the fork root, overlapping the roller wheel shaft (6) of support roller (5) and the both sides that cylinder impeller-hub (11) is located at prong respectively, release or when drawing in the position when cylinder piston rod (2) is positioned at from cylinder (1), crank throw (3) is that the axle center is positioned at conter clockwise raise up position or position, cw whereabouts with anchor shaft (4) thereupon.