CN201092514Y

CN201092514Y - Sling upper-frame limiting device for running carriage of dual-hoister type container crane

Info

Publication number: CN201092514Y
Application number: CN 200720071550
Authority: CN
Inventors: 雒金贵; 马红如
Original assignee: Shanghai Gangji Heavy Industry Co Ltd
Current assignee: Shanghai Gangji Heavy Industry Co Ltd
Priority date: 2007-06-25
Filing date: 2007-06-25
Publication date: 2008-07-30
Anticipated expiration: 2017-06-25

Abstract

The utility model relates to a limit device for a spreader headblock of a double-lifting container crane trolley, which comprises a multistage extension drum, a steel wire and a limit switch, wherein the bottom end of the extension drum is connected with the limit switch via the steel wire. When the limit device is applied on a double-40 feet container crane, since the device comprises the multistage extension drum, when the spreader headblock needs to rise and the trolley needs to be anchored, the extension drum can extend to avoid rigid impact between the spreader headblock and the extension drum, therefore, the limit device is not easy to be damaged and can be used repeatedly, with reduced maintenance cost and prolonged service life. When the crane uses double lifting, the bottom end of the extension drum is connected with the limit switch via the steel wire, and when the extension drum is compressed, and the steel wire is released to close the limit switch to trigger a relative control circuit to brake the spreader headblock in time, thereby avoiding rising the spreader headblock over limiting position caused by error operation.

Description

The suspender of the double-hoisting container crane running trolley inhibiting device of putting on the shelf

Technical field

The utility model relates to the two 40 forty equivalent unit 40 hoisting cranes in harbour, more particularly, and the suspender that the relates to a kind of double-hoisting container crane running trolley inhibiting device of putting on the shelf.

Background technology

The continuous growth of the thriving demand of world's freight container traffic and China's container port throughput, the container handling technical equipment has been proposed to upgrade higher requirement, so press for the high efficiency Quayside container loading and unloading system of development and Design, to satisfy the requirement of boats and ships maximization and high speed to the hoisting crane capacity rating.The harbour container hoisting crane is exactly a kind of of container handling technical equipment, it generally comprises body frame structure, running trolley, lifting mechanism, assembly pulley, the suspender composition of putting on the shelf, running trolley slides in the eminence of hoisting crane, it utilizes steel rope to connect suspender by assembly pulley and puts on the shelf, and suspender is put on the shelf and implemented the allocation and transportation of goods.The two 40 forty equivalent unit 40 hoisting cranes that for example now occurred, they are in production practice, when hoisting crane uses two hoisting, often, maloperation continues to rise above the end position that rises owing to putting suspender on the shelf, so just need provide a kind of inhibiting device, this inhibiting device can be put on the shelf to suspender and be carried out spacingly, can prevent that maloperation from put suspender on the shelf to surpass the end position that rises and continue to rise.

The structural principle of present inhibiting device of the prior art as shown in Figure 1; this inhibiting device comprises rigid rod 11; rigid rod sheath 12; steel rope 15 and limit switch 35; rigid rod 11 connects limit switch 35 by steel rope 15; rigid rod sheath 12 plays protection rigid rod 11; when suspender is put on the shelf when upwards rising; suspender is put on the shelf and can be pushed up rigid rod 11; rigid rod 11 upwards liftings; steel rope 15 is lax; this moment is closed downwards and touch relevant control circuit and suspender is put on the shelf brake with steel rope 15 bonded assembly limit switches 35, reaches spacing purpose (as shown in Figure 2) with this.But described inhibiting device has such shortcoming: promptly putting on the shelf when suspender needs and the timing of running trolley cat, suspender is put on the shelf and can be withstood rigid rod 11 lasting risings, because rigid rod 11 is exactly a straight-bar, so suspender is put on the shelf and rigid collision easily takes place rigid rod 11, just cause rigid rod 11 bendings easily, so just influenced re-using of described inhibiting device.

As seen from the above, pressing for provides a kind of new inhibiting device, this device can avoid and the described suspender generation rigid collision of putting on the shelf, and this device just can increase the service life and can repeated use like this.

The utility model content

The inhibiting device of putting on the shelf at the suspender of the running trolley of the particularly two 40 forty equivalent unit 40 hoisting cranes of present hoisting crane when work easily and the suspender defectives such as generation rigid impact of putting on the shelf, the suspender that the purpose of this utility model the provides a kind of double-hoisting container crane running trolley inhibiting device of putting on the shelf, described inhibiting device can be put on the shelf with described suspender and be carried out flexible contacting, can avoid and the suspender generation rigid collision of putting on the shelf, the service expenditure of this inhibiting device is minimized like this, and can repeated use, also prolonged service life.

For achieving the above object, the utility model provides a kind of suspender of double-hoisting container crane running trolley inhibiting device of putting on the shelf,

Comprise retracting cylinder, steel rope and limit switch, the bottom of retracting cylinder is connected with limit switch by steel rope.

Described limit switch is movably arranged on the bracing frame that is positioned on the described running trolley, and limit switch is positioned at the top of described retracting cylinder.

Described retracting cylinder is the multi-stage expansion tube, and the nozzle of every grade of retracting cylinder has buckle, mutual action and chucking when being buckled in the elongation state of described multi-stage expansion tube.

Described steel rope one end is connected with the bottom of the final stage retracting cylinder of described multi-stage expansion tube, and the other end of steel rope passes the multi-stage expansion tube and is connected with described limit switch.

When described multi-stage expansion tube was in elongation state, the bottom of described final stage retracting cylinder was by the described limit switch of steel rope pull-up.

The first order retracting cylinder of described multi-stage expansion tube is fixed on the pedestal of described running trolley.

Adopt the suspender of a kind of double-hoisting container crane running trolley described in the utility model inhibiting device of putting on the shelf; mainly be to be used on two 40 forty equivalent unit 40 hoisting cranes; because this device comprises the multi-stage expansion tube; when the hoisting crane use singly hoists or shuts down for a long time; suspender is put on the shelf and will be risen and the running trolley grappling; the suspender elder generation that puts on the shelf contacts with retracting cylinder; because retracting cylinder can shrink; just avoided when suspender put on the shelf vibration or wind-force when bigger suspender put on the shelf and retracting cylinder generation rigid collision; this inhibiting device is fragile and can repeated use like this; its service expenditure is minimized, and also prolonged the service life of this device.In addition when hoisting crane uses two hoisting, the bottom of retracting cylinder is connected with limit switch by steel rope, when retracting cylinder is compressed, steel rope can relax and cause the limit switch closure, and then trigger relevant control circuit and in time brake suspender and put on the shelf, prevent that continue to rise in the position that oversteps the extreme limit because maloperation is put suspender on the shelf.

Description of drawings

Fig. 1 is the structural representation of inhibiting device of the prior art before spacing;

The structural representation that Fig. 2 is an inhibiting device of the prior art after spacing;

Fig. 3 is an inhibiting device work simplified schematic diagram of the present utility model;

Fig. 4 is the scheme drawing of inhibiting device of the present utility model at elongation state;

Fig. 5 is the scheme drawing of inhibiting device of the present utility model in compressive state.

The specific embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

With reference to figure 1, the suspender of the hoisting crane running trolley described in the utility model inhibiting device 30 of putting on the shelf is mainly used on two 40 forty equivalent unit 40 hoisting cranes, and purpose is to prevent from that crane hanger from putting on the shelf 8 to bump when grappling with running trolley 9 and avoid suspender to put on the shelf and 8 with inhibiting device 30 rigid collision take place.

With reference to figure 4 and Fig. 5, the suspender of the described a kind of double-hoisting container crane running trolley inhibiting device of putting on the shelf, comprise retracting cylinder 31, steel rope 34 and limit switch 35, in the present embodiment, retracting cylinder 31 is three grades of retracting cylinders, they are respectively first order retracting cylinders 311, second stage retracting cylinder 312 and final stage retracting cylinder 313, the first order retracting cylinder 311 of retracting cylinder 31 is fixed on the pedestal of described running trolley 9, the bottom of the final stage retracting cylinder 313 of retracting cylinder 31 is connected with an end of steel rope 34, three retracting cylinders that the other end of steel rope 34 passes retracting cylinder 31 are connected with limit switch 35, limit switch 35 is movably arranged on the bracing frame 40 that is positioned on the described running trolley 9, it can also be that the strong point rotates up and down with the attachment point that described activity is installed after limit switch 35 is installed on the bracing frame 40 in other words, and limit switch 35 is positioned at the top of described retracting cylinder 31.The nozzle of every grade of retracting cylinder of retracting cylinder 31 all has buckle, mutual action and chucking when being buckled in the elongation state of described retracting cylinders at different levels, the bottom of final stage retracting cylinder 313 is stretching with steel rope 34 at this moment, and two 1 ends of steel rope 34 are connected with limit switch 35, limit switch 35 is movable installations, thus this moment steel rope 34 with limit switch 35 pull-ups (shown in Figure 4).

With reference to figure 3 and Fig. 5, when suspender is put 8 rising desires and running trolley 9 grapplings on the shelf, bypass limit switch 35 this moment on relevant control circuit, limit switch 35 is just inoperative like this, suspender is put on the shelf and 8 can be continued to rise and running trolley 9 grapplings, suspender is put on the shelf and 8 is at first contacted with the final stage retracting cylinder 313 of retracting cylinder 31, along with put on the shelf 8 lifting of suspender, final stage retracting cylinder 313 is compressed, be compressed to a certain degree, final stage retracting cylinder 313 and then begin to compress second stage retracting cylinder 312 is like this because suspender is put on the shelf 8 is flexible contacts with retracting cylinder 31, when 8 vibrations and wind speed are big even suspender is put on the shelf, suspender put on the shelf 8 and retracting cylinder 31 rigid collision can not take place; And be in two when hoisting mode of operation when hoisting crane, by relevant control circuit limit switch 35 is started working, when suspender is put 8 arrival limes superiors positions on the shelf, if because maloperation is when causing it continue to rise, the suspender 8 compression final stage retracting cylinders 313 of putting on the shelf, at this moment steel rope 34 relaxes, trigger limit switch 35 and send signal, relevant control circuit in time makes suspender 8 brakings of putting on the shelf, prevents from that suspender from putting on the shelf 8 continue to rise, and hoisting crane is two to rise to the Western Paradise during operation to put on the shelf 8 spacing purpose of suspender thereby reach.

Notice that retracting cylinder 31 has adopted three grades of retracting cylinders in the present embodiment, can certainly adopt level Four retracting cylinder and even Pyatyi retracting cylinder.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of above embodiment.

Claims

1. the suspender of the double-hoisting container crane running trolley inhibiting device of putting on the shelf, this inhibiting device is installed in the pedestal bottom of described running trolley, it is characterized in that comprise retracting cylinder, steel rope and limit switch, the bottom of retracting cylinder is connected with limit switch by steel rope.

2. the suspender as claimed in claim 1 inhibiting device of putting on the shelf is characterized in that described limit switch is movably arranged on the bracing frame that is positioned on the described running trolley, and limit switch is positioned at the top of described retracting cylinder.

3. the suspender as claimed in claim 1 inhibiting device of putting on the shelf is characterized in that described retracting cylinder is the multi-stage expansion tube, and the nozzle of every grade of retracting cylinder has buckle, mutual action and chucking when being buckled in the elongation state of described multi-stage expansion tube.

4. the suspender as claimed in claim 3 inhibiting device of putting on the shelf is characterized in that described steel rope one end is connected with the bottom of the final stage retracting cylinder of described multi-stage expansion tube, and the other end of steel rope passes the multi-stage expansion tube and is connected with described limit switch.

5. the suspender as claimed in claim 3 inhibiting device of putting on the shelf is characterized in that, when described multi-stage expansion tube was in elongation state, the bottom of described final stage retracting cylinder was by the described limit switch of steel rope pull-up.

6. the suspender as claimed in claim 3 inhibiting device of putting on the shelf is characterized in that the first order retracting cylinder of described multi-stage expansion tube is fixed on the pedestal of described running trolley.