CN2098495U

CN2098495U - Self-locking rail clamping device

Info

Publication number: CN2098495U
Application number: CN 91215557
Authority: CN
Inventors: 朱云龙; 陈飞; 茅金龙
Original assignee: Ninth Design And Research Institute Of China State Shipbuilding Corp
Current assignee: Ninth Design And Research Institute Of China State Shipbuilding Corp
Priority date: 1991-06-11
Filing date: 1991-06-11
Publication date: 1992-03-11

Abstract

The utility model relates to a self-locking rail clamping device which can lead a hoister to be locked on a rail for preventing accidental locomotion. A pair of rolling wheels which use a rolling wheel shaft as a center and can horizontally rotate are arranged on a clamp of the utility model. Two tapered bars are arranged on a wall board of a vehicle frame. The rolling wheels and V-shaped notches of the tapered bars are tangential. A vice jaw block which increases the friction coefficient is embedded on a vice jaw. When external force acts on the hoister, the vehicle frame and the tapered bars on the vehicle frame are driven to move, the rolling wheels and the tapered bars generate the relative displacement, the center distance of the pair of rolling wheels is lessened, the clamping force from the vice jaw block for the head part of the rail is increased, and the self-locking reinforcement function is obtained.

Description

Self-locking rail clamping device

The utility model be a kind of with hoisting crane locking in orbit in case the safety device of accidental shifting.

General rail clamping device commonly used has manual type, and it is to realize by the huge initial gripping power between jaw and track head that weight hammer type and fluid pressure type etc., its wind resistance wait the ability of accidental shifting cruelly.Self-locking rail clamping device is to utilize the novel rail clamping device of self-lock mechanism design-calculated.Application number is 89220593.8 Chinese patent, discloses a kind of " self-locking rail clamping device ".Its clamping part has a pair of claw beam, and claw beam is equipped with the jaw plate of a pair of band rubber, and in order to the grip track head, the face of joint of the claw beam back side and hinge is a V-arrangement, and with spring it is compressed, and hinge links to each other with hoisting crane.The rail clamping device of this self-locking reinforcement needs not very big initial gripping power, and the claw beam back side and hinge are fitted for the face face, has designed row of rollers at the claw beam back side to increase the sensitieness of action (self-locking, release), and structure is comparatively complicated.

The purpose of this utility model provides a kind of simple in structure, is active in one's movements, and does not need initial gripping power, the self-locking reinforcement rail clamping device that gripping power increases with external force (as wind-force).The utility model is realized by following technology.

The same with other self-locking rail clamping devices, it comprises power part, drive disk assembly, clamping part, function unit, support unit.In the clamping part of the present utility model, one pair roller is housed on the clamp, and it is that the horizontal direction rotation can be done in the center with its axle, is inlaid with two inside faces on the vehicle frame wallboard and has a V-shaped groove mouth, and can carve bar with what the vehicle frame direction along ng a path moved, roller suits mutually with the V-shaped groove mouth of carving bar.The jaw of clamp is inlayed the jaw piece of promising increase friction coefficient.

With drawings and Examples technical scheme is described further below.

Fig. 1 is the utility model structural representation

Fig. 2 is clamp structure scheme drawing (jaw is closure state)

Fig. 3 is clamp structure scheme drawing (the open-shaped attitude of jaw)

Fig. 4 is the birds-eye view of Fig. 1

Among the figure: the 1st, electronic cylinder, the 2nd, bearing a, the 3rd, lever, the 4th, bearing b, the 5th, upper limit position switch, the 6th, lower position switch, the 7th, pull bar, the 8th, stay-bolt, the 9th, adjustment nut, the 10th, pull rod shaft, the 11st, connecting rod, the 12nd, pitman shaft, the 13rd, clamp, the 14th, jaw piece, the 15th, roller, the 16th, roller shaft, the 17th, carve bar, the 18th, carve the bar bolt, the 19th, lever, the 20th, vehicle frame, the 21st, housing, the 22nd, track adjusting wheel, the 23rd, hoisting crane connects pin-and-hole.

Power part adopts electronic cylinder 1, and it is hinged with the bearing a that is fixed in vehicle frame 20.Drive disk assembly lever 3 one ends are hinged with the bearing b that is fixed in vehicle frame 20, and the screw mandrel head of the other end and electronic cylinder 1 is hinged with pin.Function unit is upper limit position switch 5 and lower position switch 6.The free end of lever can contact limit switch and control stretching of electronic cylinder 1 or contract.One end and the lever 3 of pull bar 7 are hinged with bearing pin, and its other end is connected with adjustment nut 9 with stay-bolt 8, and also tight with another nut.Stay-bolt 8 is hinged with pull rod shaft 10.Adjustment nut 9 is used to adjust the position of the hinge C between two connecting rods 11, and it is guaranteed when clamped condition, the hinge A of hinge C between clamp 13 and connecting rod 11, below the B line 2～3 millimeters.

Clamp 13 is hinged by pitman shaft 12 and connecting rod 11 in the clamping part, and pair of links 11 is hinged with pull rod shaft 10.One pair roller 15 is loaded on the clamp by axle sleeve, roller shaft 16, and it can do the horizontal direction rotation for the center by roller shaft 16.The surface of jaw piece is through PROCESS FOR TREATMENT, to improve friction coefficient.

Pin is installed on the vehicle frame 20, is positioned at the both sides of clamp, can play guiding, position-limiting action to the lifting of clamp.

Working process of the present utility model is as follows:

When the crane operating unit was not worked, electronic cylinder shrank, and under the drive disk assembly effect, the clamp 13 that is in overhead positions falls to placing on the track, this moment roller 15 with bar 17V shape notch between contact and be in critical conditions.Be that hinge C is positioned at hinge A, the following about 2-3 millimeter of B line, this moment, clamp was just in time shelved in orbit, and the jaw piece 14 of clamp fits with the track head both sides, because no external force (as wind-force) effect, roller 15 does not have relative displacement with the V-shaped groove mouth of carving bar 17, so jaw piece and track head both sides there is no positive pressure, clamp is in the critical conditions of clamping, that is to say that it need not initial gripping power.

Hoisting crane carries the slippage slightly of effect lower edge track at wind, vehicle frame moves thereupon, and clamp is because deadweight, produce friction and rest on the original place with rail top face, roller 15 and be installed on the vehicle frame, produced relative motion like this with carving between the bar 17 of moving of vehicle frame, force the width between centers of a pair roller more and more littler, be presented as that promptly jaw and interorbital positive pressure increase, jaw and interorbital maximum static friction force increase.Wind-force is big more, and roller is also big more with the rate of travel of carving bar V-shaped groove mouth, and the gripping power of jaw piece is big more, and the wind resistance power of rail clamping device is also big more, has embodied the function of the utility model self-locking reinforcement.

When the crane operating unit will be worked, electronic cylinder 1 was overhanging, and clamp 13 is upwards carried, and moves on the hinge C, and hinge A, B are adjacent to each other, make roller 15 and the V-shaped groove mouth of carving bar 17 from, jaw piece 14 disappears with the positive pressure of track head both sides.Electronic cylinder 1 continues overhanging, by drive disk assembly, makes clamp continue to rise, and this moment, the jaw piece rose on the orbital plane, and electronic cylinder 1 is overhanging when running into upper limit position switch, and clamp is the position of referred setting.

The utility model has the advantages that:

1. roller and the V-shaped groove mouth of carving bar directly are presented as contacting of land portions and plane, and relative displacement is finished by rolling, and frictional force is little. Self-locking and release function are very sensitive.

2. this device does not need initial clamping force, relies on the clamp deadweight to shelve the frictional force that produces in orbit and can realize reliably self-locking. On the other hand, can not entirely accurate put in place when shrinking because of electric cylinder itself, its small excessive contraction makes clamp produce a kind of additonal pressure to orbital plane, makes self-locking more reliable, and this is a kind of beyond thought effect.

3. propulsion source is simple, adopts the electronic cylinder of existing standard product, and it has mechanical auto-lock function itself, and electronic cylinder only is subjected to electrical control, can not increase the rail clamping device functional reliability thus because of the external force effect produces expanding-contracting action.

4. carving bar is that horizontal direction is embedded on the vehicle frame wallboard, can make relative displacement with vehicle frame direction along ng a path and roller on the one hand so carve the bar framework, carve on the other hand bar can level perpendicular to the direction of track on its position can suitably float, make clamp (a pair of pincers sheet) stressed evenly.

The utility model is simple in structure, and manufacturing is installed also simple, self-locking, release sensitivity, and it is good that reinforcement clamps performance, and reliable operation is a kind of desirable hoisting crane blocking device.

Claims

1, self-locking rail clamping device comprises power part, drive disk assembly, clamping part, function unit and support unit, it is characterized in that:

(1) being equipped with a pair of on the clamp 13 is the roller 15 that the center can horizontally rotate with roller shaft 16, two inside faces is housed on the vehicle frame wallboard has the V-shaped groove mouth and can carve bar 17 with what the vehicle frame direction along ng a path moved, and roller 15 suits mutually with the V-shaped groove mouth of carving bar 17.

(2) jaw of clamp 13 is equipped with the jaw piece 14 that increases friction coefficient.

2, self-locking rail clamping device according to claim 1 is characterized in that power part is to adopt electronic cylinder 1.

3, self-locking rail clamping device according to claim 1 and 2 is characterized in that:

(1) end of lever 3 and bearing b are hinged, and the screw mandrel head of the other end and electronic cylinder 1 is hinged, and electronic cylinder 1 is hinged on the bearing a, and lever 3 has a free end that can contact the upper and lower limit bit switch.

(2) pull bar 7 one ends and lever 3 are hinged, and the other end is connected by adjustment nut 9 with stay-bolt 8, and stay-bolt 8 flexibly connects with pull rod shaft 10.

(3) clamp 13 is hinged with connecting rod 11, and pair of links 11 is hinged with pull rod shaft 10 again.

(4) carve bar 17 and carve bar bolt 18 and constitute and carve the bar framework.

4, self-locking rail clamping device according to claim 3 is characterized in that also being equipped with on the vehicle frame pin 19 that a pair of lifting to clamp 13 plays guiding, position-limiting action.