CN202508764U - Stand bar disk of crane landing leg - Google Patents

Abstract

A stand bar disk of a crane landing leg relates to hoisting machinery and solves the technical problems that existing stand bar disks are fixed at a single point during uplifting, thereby being unreliable; and the existing stand bar disks are not provided with automatic centering devices, thereby being uneven in stress wearing. The stand bar disk of the crane landing leg comprises a stand bar connected with a stand bar seat, the upper face of the stand bar is in a concave spherical face, the stand bar is fixed on the stand bar seat through a cover plate, the lower plane of the stand bar is lined with a base plate, and an adjusting spring is arranged under the base plate. A track device is connected on the stand bar through two hinge pins, a pin rod is arranged at the left end of the track device and at a slot position of a convex ball spherical of the landing leg, and the right end of the track device is connected with a supporting plate on the landing leg. The stand bar disk of the crane landing leg achieves two working condition positions of the crane stand bar disk under put-away state and working state, reliable fixing under the put-away state, and adjusting and centering under the working state, thereby enabling a crane to be reliable and safe in walking and working.

Description

A kind of leg disc of hoisting crane supporting leg

Technical field

The utility model relates to elevator machinery, a kind of leg disc when particularly hoisting crane need be used the supporting leg support works.

Background technology

When hoisting crane need be used the supporting leg support works, use a kind of leg disc to support the heavy-duty machine supporting leg usually.Like Fig. 1, shown in Figure 2, the structure of leg disc is made up of clip device 01, leg 3, stand bar seat 6 usually.When hoisting crane was carried out support works, the vertical oil cylinder of hoisting crane supporting leg 8 stretched out, and makes the concave spherical surface of aiming at leg with the protruding sphere of oil cylinder bonded assembly supporting leg, fully contacts up to two spheres, hoisting crane is supported carry out operation; On the contrary; When hoisting crane fulfils assignment, need pack up supporting leg 8 and be with leg disc to lift together, move to next operating mode when carrying out operation; Earlier the long limit of the L type bar of clip device 1 is depressed downwards; Make the minor face of L type bar be able to block the seam 8-1 of the protruding sphere of supporting leg, and when vertical oil cylinder is withdrawn, in the lump leg disc is lifted, move to next operating mode and carry out operation.

The leg disc clip device of prior art is the single-point fixed form, fixedly shakiness and reliability characteristics on the low side when existing leg disc to lift, and such leg disc do not have the support automatic centring device, can not fully make and support the bearing surface contact, causes unbalance stress.

Summary of the invention

The purpose of the utility model is to overcome the deficiency that prior art exists, and a kind of leg disc of hoisting crane supporting leg is provided, and single-point was fixed when the existing leg disc of solution lifted, and is unreliable; No automatic centring device, the technical matters of unbalance stress.

The utility model is realized through following technical scheme:

A kind of leg disc of hoisting crane supporting leg; Comprise: be connected with stand bar seat, above be the leg of concave spherical surface, it is characterized in that: said leg is fixed on the stand bar seat through cover plate, the leg lower plane is lined with backing plate; Backing plate is divided into regulating spring; Rail set is connected on the leg through two bearing pins, at the left end of rail set, be positioned at the protruding sphere stop portion of supporting leg and be provided with pin rod, is connected with stay bearing plate on the supporting leg at the right-hand member of rail set.

Between said rail set and the cover plate serum cap is arranged.

The utility model has been realized the two kind operating mode positions of hoisting crane leg disc when collapsed state and during mode of operation; Adjustment centering when reaching secure fixation and the mode of operation of collapsed state makes reliability, the safety of hoisting crane in walking and work be improved.

Description of drawings

Fig. 1 is the structural representation (front view) of prior art leg disc;

Fig. 2 is the birds-eye view of Fig. 1;

Fig. 3 is the structural representation (front view) of the utility model;

Fig. 4 is the birds-eye view of Fig. 3;

Fig. 5 is the A-A section-drawing of Fig. 4;

Fig. 6 is the structural representation (block diagram) of the utility model;

Fig. 7 is the structural representation of the utility model when the supporting leg collapsed state.

The utility model is elaborated through preferred embodiment below in conjunction with accompanying drawing.

The specific embodiment

Like Fig. 3,4,5,6, shown in 7, a kind of leg disc of hoisting crane supporting leg comprises: be connected with stand bar seat 6, above be the leg 3 of concave spherical surface; Said leg 3 is fixed on the stand bar seat 6 through cover plate 4; Leg 3 lower planes are lined with backing plate 5, and backing plate 5 is divided into regulating spring 7, and rail set 1 is connected on the leg 3 through two bearing pin 1-2; At the left end of rail set 1, be positioned at the protruding sphere seam of supporting leg 8-1 place and be provided with pin rod 1-1, be connected with stay bearing plate 8-2 on the supporting leg at the right-hand member of rail set 1.

Between said rail set 1 and the cover plate 4 serum cap 2 is arranged.

As shown in Figure 7, supporting leg is when the collapsed state position, and the protruding sphere seam of supporting leg 8-1 is stuck in the left end of rail set 1, and pin has a pin rod 1-1 on it, to limit oil cylinder in the collapsed state position; Stay bearing plate 8-2 on supporting leg is stuck in the right-hand member of rail set 1 simultaneously, thereby forms 2 fixed feet dishes.

The working process of the utility model:

At first the pin rod 1-1 with rail set 1 left end takes out; Stand bar seat 6 is laterally moved left the protruding sphere of leg concave spherical surface aligning supporting leg, and then pin rod 1-1 is sold on the hole of centre, the right-hand member of leg concave spherical surface is also sold a pin rod 1-1 is arranged simultaneously; Reach the control position position-limiting action; At this moment, dead work is ready, and supporting leg can vertically stretch out.Before the bearing surface contact, because the distance of t is arranged between leg 3 and the cover plate 4, so; Leg 3 is to be conditioned spring 7 jack-up, and promptly leg and the distance that backing plate 5 separates t contact with leg 3 when oil cylinder contacts protruding sphere; Regulating spring 7 is compressed the t stroke; And in the t stroke, regulating spring can play the position of abundant adjusting leg 3 horizontal surfaces, reaches the effect of centering adjustment.

Claims (2)

1. the leg disc of a hoisting crane supporting leg; Comprise: be connected with stand bar seat (6), above be the leg (3) of concave spherical surface; It is characterized in that: said leg (3) is fixed on the stand bar seat (6) through cover plate (4); Leg (3) lower plane is lined with backing plate (5), and backing plate (5) is divided into regulating spring (7), and rail set (1) is connected on the leg (3) through two bearing pins (1-2); At the left end of rail set (1), be positioned at the protruding sphere seam of supporting leg (8-1) and locate to be provided with pin rod (1-1), be connected with stay bearing plate (8-2) on the supporting leg at the right-hand member of rail set (1).

2. according to the leg disc of the said hoisting crane supporting leg of claim 1, it is characterized in that: between said rail set (1) and the cover plate (4) serum cap (2) is arranged.

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