CN2776946Y

CN2776946Y - Safety hook for fixing front girder and ladder frame of crane

Info

Publication number: CN2776946Y
Application number: CN 200520038973
Authority: CN
Inventors: 雒金贵; 李钟望; 郝筠青; 李旭
Original assignee: Shanghai Gangji Heavy Industry Co Ltd
Current assignee: Shanghai Gangji Heavy Industry Co Ltd
Priority date: 2005-01-14
Filing date: 2005-01-14
Publication date: 2006-05-03
Anticipated expiration: 2015-01-14

Abstract

The utility model discloses a safety hook which is used for fixing a front girder and a trapezoidal rack of a crane. The safety hook comprises a centering rack which is arranged on the trapezoidal rack, a supporting rack, a hydraulic push rod mechanism, and a lever, wherein the middle part of the centering rack is provided with an interval in which the front girder extends; the supporting rack is fixed on the centering rack, and the lever is pivoted on the supporting rack; one end of the lever is vertically connected with an ejector rod, and the other end is provided with a balance weight; the hydraulic push rod mechanism is fixed on the centering rack and is connected with the lever. Therefore, the safety hook of the utility model can cause that the front girder is firmly fixed on the trapezoidal rack under the acting force (such as typhoon) all the same; in addition, the ejector rod can cause that a pin is inserted into a reserving pin hole of the front girder very conveniently under the action of the hydraulic push rod when the front girder enters into the interval of the centering rack, namely a hook area and the front girder and the trapezoidal rack are fixed together.

Description

A kind of with crossbeam before the hoisting crane and the fixing hook with safety tong of ladder frame

Technical field

The utility model relates to the big machinery of forward position, harbour operation, more specifically refers to a kind of with crossbeam before the hoisting crane and the fixing hook with safety tong of ladder frame.When hoisting crane under off working state, be connected with ladder frame safety when the preceding crossbeam of hoisting crane is steeved.

Background technology

In port operation, for the big machinery of forward position operation, as hoisting crane, because relate to the problems such as safe operation of navigation channel and boats and ships, when off working state, need preceding crossbeam (extending into the part in navigation channel and the shipping work scope) is steeved, to make things convenient for the operations such as operation of boats and ships.In addition when the typhoon protection state, also need preceding crossbeam is steeved, bump with wharf apron machinery to prevent the driftage (as the boats and ships of slip etc.) in the navigation channel, and cause huge property damage.

Mainly contain two kinds of modes of steeving now, a kind of is to adopt hook mode, it is traditional hook with safety tong, it mainly is to utilize luffing mechanism that preceding crossbeam is steeved on certain angle, utilize hook with safety tong that preceding crossbeam and ladder frame are linked together again, in this mode, bear the weight of preceding crossbeam by hook with safety tong.Concrete structure sees also Fig. 1, and among the figure, 10 is ladder frame, and 11 is preceding crossbeam, and 12 is the hook body, and 13 is counterweight, and 15 is bearing, and 16 is hydraulic push rod.When needs are steeved preceding crossbeam 11 fixedly, preceding crossbeam 11 is hooked with the hook before the hook body 12.This kind mode, advantage are that action principle is simple, and be easy to operate.Shortcoming is: only fixed an angle of preceding crossbeam in the four direction on horizontal surface, belonged on other three directions and remain movable.Under the effect of typhoon (especially under situations such as island weather, instantaneous wind speed can reach 78 meter per seconds, and promptly speed per hour is 280 kilometers), certain parts of hoisting crane or the damage of complete machine then might take place.

Another kind is to adopt the latch mode, and it mainly is to utilize luffing mechanism that preceding crossbeam is steeved on certain angle, successively moves with two latches and finishes preceding crossbeam fixing on former and later two directions successively.Please in conjunction with shown in Figure 2, among the figure, 20 is ladder frame, and 21 is preceding crossbeam, and 22 is hydraulic actuating cylinder, and 23 is push rod, and 55 is the push rod tip.The shortcoming of this kind mode is: the manufacturing to above-mentioned framing member requires height, and push rod and pin-and-hole contraposition are loaded down with trivial details, and deviation takes place easily, advance the pin difficulty, and frequently use deforms easily and causes situations such as push rod can't insert.

Summary of the invention

The purpose of this utility model is at above-mentioned traditional problem that exists in the crossbeam before fixing, and a kind of hook with safety tong that crossbeam before the hoisting crane and ladder frame are fixed is provided, and this hook with safety tong Stability Analysis of Structures, not fragile hoisting crane, contraposition are easy.

To achieve these goals, the utility model adopts following technical scheme:

This with hoisting crane before the fixing hook with safety tong of crossbeam and ladder frame comprise that one is arranged at centering frame, support, hydraulic push rod mechanism, the lever on the ladder frame,

The interval of stretching into for preceding crossbeam is left at the middle part of centering frame, and support is fixed on the centering frame, and lever pivot is located on the support, the vertical push rod that connects of an end of lever, and the other end is provided with counterweight;

Hydraulic push rod mechanism is fixed on the centering frame, and hydraulic push rod mechanism is connected on the lever.

Also be horizontally disposed with the centering backup plate in the interval of described centering frame, the centering backup plate is fixed on the ladder frame, is provided with the clearance groove that stretches into for preceding crossbeam in the middle of the centering backup plate.

Also be provided with the latch that can run through centering frame and preceding crossbeam under the described push rod.

Described hydraulic push rod mechanism comprises hydraulic actuating cylinder, push rod, and push rod one end links to each other with lever, and the other end links to each other with hydraulic actuating cylinder.

In the utility model, hook with safety tong has comprised centering frame, support, hydraulic push rod mechanism, a lever that is arranged on the ladder frame, the interval of stretching into for preceding crossbeam is left at the middle part of centering frame, support is fixed on the centering frame, lever pivot is located on the support, the vertical push rod that connects of one end of lever, the other end is provided with counterweight; Hydraulic push rod mechanism is fixed on the centering frame, and hydraulic push rod mechanism is connected on the lever.Therefore, crossbeam still can be fixed on the ladder frame firmly at the application force (as typhoon) in the external world before hook with safety tong of the present utility model can make; In addition, when current crossbeam had entered the interval of centering frame, promptly during the hook district, under the effect of hydraulic push rod, in the pin hole of reserving in the crossbeam before push rod can make latch insert easily, crossbeam and ladder frame were fixed before making.

Description of drawings

Fig. 1 is for adopting the structural representation of traditional hook mode.

Fig. 2 is for adopting the structural representation of traditional latch mode.

Fig. 3 is a fixedly scheme drawing of hook with safety tong structure of the present utility model and preceding crossbeam and ladder frame.

Fig. 4 is the horizontally disposed centering backup plate schematic top plan view of the utility model hook with safety tong.

Fig. 5 is the pin hole enlarged diagram on the centering frame of the utility model hook with safety tong.

The specific embodiment

For further specifying above-mentioned purpose of the present utility model, technical scheme and effect, in conjunction with above-mentioned each figure the utility model is described in detail by the following examples.

See also shown in Figure 3,

The hook with safety tong that crossbeam before the hoisting crane and ladder frame is fixing of the present utility model comprises that one is arranged at centering frame 32, support 33, hydraulic push rod mechanism 34, the lever 35 on the ladder frame 30.

The interval of stretching into for preceding crossbeam 31 36 is left at the middle part of centering frame 32, and support 33 is fixed on the centering frame 32, and lever 35 is hubbed on the support 33, the vertical push rod 37 that connects of an end of lever 35, and the other end is provided with counterweight 38.

On centering frame 32, the top of hydraulic push rod mechanism 34 links to each other with lever 35 as an overall fixed in hydraulic push rod mechanism 34.Under the effect of hydraulic push rod mechanism 34, lever 35 is a fulcrum with support 33, can rotate around support 33.Specifically, hydraulic push rod mechanism 34 comprises hydraulic actuating cylinder and push rod, and push rod one end links to each other with lever 35, and the other end links to each other with hydraulic actuating cylinder.

Please again in conjunction with shown in Figure 4,

Also be horizontally disposed with centering backup plate 39 in the interval 36 of described centering frame 32, centering backup plate 39 also is fixed on the ladder frame 30, is provided with the clearance groove 41 that stretches into for preceding crossbeam 31 in the middle of the centering backup plate 39.

Described push rod also is provided with the latch that can run through centering frame 32 and preceding crossbeam 31 for 37 times, specifically, all offers pin hole 40 (see figure 5)s on centering frame 32 and the preceding crossbeam 31.The all following alignment of centering frame 32 and preceding crossbeam 31 pin holes is so that the latch of push rod 37 belows inserts.

By above-mentioned structrual description to hook with safety tong as can be seen; after current crossbeam 31 enters and inserts in the clearance groove 39 of centering frame 32 and centering backup plate 38 and by the latch of push rod 37 belows; preceding crossbeam 31 is under the effect of centering frame 32 and centering backup plate 38; will hook firmly between preceding crossbeam 31 and the ladder frame 30; extraneous power (as typhoon) is difficult to preceding crossbeam is lifted, and it has avoided traditional hook mode occurred phenomenon that preceding crossbeam regular meeting lifted by typhoon.Simultaneously, the latch of push rod 37 belows also is easy to align with pin hole 40, is difficult for deviation takes place, and it is easy to advance pin, and it is also very convenient to operate, and the while is the associated components or the mechanism of fragile hoisting crane not.

Certainly, 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 the scope of the utility model claims variation, the modification of the above embodiment.

Claims

It is 1, a kind of with crossbeam before the hoisting crane and the fixing hook with safety tong of ladder frame,

It is characterized in that:

Comprise that one is arranged at centering frame, support, hydraulic push rod mechanism, the lever on the ladder frame,

The interval of stretching into for preceding crossbeam is left at the middle part of centering frame, and support is fixed on the centering frame, and lever pivot is located on the support, the vertical push rod that connects of an end of lever, and the other end is provided with counterweight;

Hydraulic push rod mechanism is fixed on the centering frame, and hydraulic push rod mechanism is connected on the lever.
It is 2, as claimed in claim 1 with crossbeam before the hoisting crane and the fixing hook with safety tong of ladder frame,

It is characterized in that:

Also be horizontally disposed with the centering backup plate in the interval of described centering frame, the centering backup plate is fixed on the ladder frame, is provided with the clearance groove that stretches into for preceding crossbeam in the middle of the centering backup plate.
It is 3, as claimed in claim 1 with crossbeam before the hoisting crane and the fixing hook with safety tong of ladder frame,

It is characterized in that:

Also be provided with the latch that can run through centering frame and preceding crossbeam under the described push rod.
It is 4, as claimed in claim 1 with crossbeam before the hoisting crane and the fixing hook with safety tong of ladder frame,

It is characterized in that:

Described hydraulic push rod mechanism comprises hydraulic actuating cylinder, push rod, and push rod one end links to each other with lever, and the other end links to each other with hydraulic actuating cylinder.