CN2151128Y

CN2151128Y - Self-loading safety unit

Info

Publication number: CN2151128Y
Application number: CN 93227058
Authority: CN
Inventors: 程君强; 许梅华; 陈苏明; 张兆冲
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-01-05
Filing date: 1993-01-05
Publication date: 1993-12-29
Anticipated expiration: 2003-01-05

Abstract

The utility model relates to a safety device against wind for outdoor working on the various track cranes. The utility model is composed of a supporting stand, a spring, a spring seat, an oil cylinder, a rail-pressing chair, a rail-pressing panel, a rear axle, a front axle, a middle axle, a bottom axle, a short connecting board and a long connecting board. The utility model can effectively use the crane dead weight to increase the friction force on the track and has the advantages of simple construction, small size, light dead weight, and work safety, etc.

Description

Self-loading safety unit

The utility model relates to the wind-proof device on a kind of various locomotive cranes that can be used for outdoor work.

The wind-proof device that is widely used at present on the various outdoor work locomotive cranes is a rail clamping device.It is simple in structure, easy for installation that rail clamping device has, can play certain grappling effect in the ordinary course of things, but because the gripping power of rail clamping device is a certain value, it depends on self spring or weight, and spring or weight can not be very big, so the gripping power of rail clamping device is extremely limited, like this when running into strong wind, because the friction force that the rail clamping device gripping power produces can not be fixing in orbit with hoisting crane, and the comparatively serious accident of generation, cause bigger economic loss, this class accident often occurs on the equipment of portal crane and power station using such as handling bridge.Rail clamping device will reach bigger gripping power, must make spring or weight very big, and this just makes rail clamping device itself become more stupid, and this is again worthless in practice.

The deadweight or the rail pressing device that provide a kind of effect friction force in orbit variable is provided the purpose of this utility model.

Description of drawings:

Fig. 1 is the front view of dead-weight rail pressing device;

Fig. 2 is the lateral plan of dead-weight rail pressing device;

Fig. 3 is a dead-weight rail pressing device A-A revolved sectional view.

Describe the utility model in detail below in conjunction with accompanying drawing.

The utility model be support 3, spring 5, spring perch 13, oil cylinder 12, tool rest 11, pressing track plate 9, rear axle 1, front axle 4, axis 7, lower shaft 8, short connecting

panel

2 and 2 ', 10 and 10 ' and long connecting

panel

6 and 6 compositions.Front axle 4 and rear axle 1 are installed on the support 3, oil cylinder 12 is installed on the axis 7, spring 5 is enclosed within on the spring perch 13, the piston rod of oil cylinder 12 passes axis 7 and is threaded with spring perch 13 usefulness, press rail chair 11 to be installed on the lower shaft 8, pressing track plate 9 is screwed is pressing on the rail chair 11, for improving friction coefficient, increase friction force, pressing track plate 9 has profile of tooth; Spring perch 13 and long connecting

panel

6 and 6 ' an end all be hinged with front axle 4, long connecting

panel

6 and 6 ' the other end and lower shaft 8 be hinged, short connecting panel 10 and 10 ' an end and axis 7 be hinged, its other end and lower shaft 8 are hinged; Short connecting panel 2 and 2 ' an end and rear axle 1 be hinged, its other end and axis 7 are hinged.

The following describes principle of the present utility model.

The dead-weight rail pressing device is installed between hoisting crane body and the track, and the solid line state is that rail pressing device lifts deorbit face in the accompanying drawing.Oil cylinder work this moment, compression spring is to predetermined length, and rail pressing device is lifted away from orbital plane to preset distance S1, and cart can move, and when traveling mechanism of the larger traveller is worked, is guaranteed by hydraulic efficiency pressure system, makes rail pressing device leave rail level all the time; Otherwise, when cart quits work, the pressure oil oil sump tank, spring reset falls rail pressing device after rise and is depressed on the track, and the power that press to track this moment is to be produced by spring.When wind is arranged, and wind direction is shown in arrow in the accompanying drawing, as wind-force greater than on the rail pressing device by friction force that spring produced, mechanism then of the present utility model is out of shape gradually, the ultimate limit state of distortion is that long and two-short dash line is represented in the accompanying drawing, and the O point moves on to the O1 point, and a point moves on to the a1 point, the range of pressing track plate is S, this moment, the deadweight of hoisting crane then acted on the rail pressing device, and effect pressure is in orbit increased greatly, and the pressing track plate of profile of tooth is arranged because of employing, the friction coefficient fourth should be improved, thereby reach windproof purpose.

The utility model effect pressure in orbit goes up greatly that to carry direction relevant with wind, so must use the utility model (being the two ends of homonymy) in pairs.

Advantage of the present utility model be simple structure, volume little, from heavy and light, can effectively utilize the deadweight of hoisting crane, thereby effect friction force is in orbit increased, and safe and reliable.

Claims

1, dead-weight rail pressing device on a kind of various locomotive cranes that are used for outdoor work, it is by support [3], spring [5], spring perch [13], oil cylinder [12], press rail chair [11], pressing track plate [9], rear axle [1], front axle [4], axis [7], lower shaft [8], short connecting panel [2] and [2 '], [10] and [10] and long connecting panel [6] and [6 '] form, it is characterized in that front axle [4] and rear axle [1] are installed on the support [3], oil cylinder [12] is installed on the axis [7], spring [5] is enclosed within on the spring perch [13], the piston rod of oil cylinder [12] passes axis [7] and spring perch [13] with being threaded, press rail chair [11] to be installed on the lower shaft [8], pressing track plate [9] is screwed is pressing on the rail chair [11], one end of spring perch [13] and long connecting panel [6] and [6 '] all is hinged with front axle [4], the other end of long connecting panel [6] and [6 '] is hinged up and down mutually with lower shaft [8], one end and the axis [7] of short connecting panel [10] and [10 '] are hinged, its other end and lower shaft [8] are hinged, one end and the rear axle [1] of short connecting panel [2] and [2 '] are hinged, and its other end and axis [7] are hinged.

2, require 1 described dead-weight rail pressing device according to claim, it is characterized in that pressing track plate ［ 9 ］ has profile of tooth.