CN202400754U

CN202400754U - Mast crane

Info

Publication number: CN202400754U
Application number: CN2011205217191U
Authority: CN
Inventors: 施和平
Original assignee: Shanghai Meishan Iron and Steel Co Ltd; Nanjing Meishan Metallurgy Development Co Ltd; Shanghai Meishan Baosteel Group Co Ltd
Current assignee: Shanghai Meishan Iron and Steel Co Ltd; Nanjing Meishan Metallurgy Development Co Ltd; Shanghai Meishan Baosteel Group Co Ltd
Priority date: 2011-12-14
Filing date: 2011-12-14
Publication date: 2012-08-29
Anticipated expiration: 2021-12-14

Abstract

The utility model relates to hoisting equipment, in particular to hoisting equipment for a workshop. The utility model provides the hoisting equipment which is large in lifting amplitude, easy to disassemble and assemble and convenient to transfer, so that small-scale accessories can be hoisted in the workshop. The utility model discloses a mast crane, which comprises a work platform, a mast, an amplitude-change system, a lifting system and a counter weight. By the mast crane, the requirement of the lifting amplitude is met, and the aim of transferring the mast crane conveniently in an integral construction site or the workshop is fulfilled.

Description

Derrick crane

Technical field

The present invention relates to a kind of hanging device, particularly relate to a kind of workshop and use hanging device.

Background technology

The workshop is at 3 ~ 4 tons small-sized accessory of lifting, like driving wheel, during gear case etc.; Owing to there is not less hanging device; Must start in the factory building 32 tons driving, so not only cause unnecessary waste of energy, and the workshop ration the power supply summer or situation about having a power failure under just can't accomplish the lifting task.

Summary of the invention

The object of the present invention is to provide a kind of lifting amplitude big, easy to removal and installation, and call hanging device easily, thereby in the workshop, accomplish the lifting work of small-sized accessory.

In order to realize the foregoing invention purpose, the invention provides a kind of derrick crane, comprising:

One workplatform, said workplatform are rotary workplatform, also are provided with on the said workplatform in the cooresponding connecting element of bolt device;

One mast, said mast are fixed in workplatform one side, and said mast comprises,

One lifting-point device,

One bolt device;

One changing-breadth system, but said changing-breadth system comprises securing supports and luffing strut member;

One elevator system, said elevator system are fixed on the mast lifting-point device;

One counterweight, said counterweight is fixed in the workplatform opposite side corresponding to mast;

Said mast and counterweight are individually fixed in workplatform one side, fix through changing-breadth system between said mast and the workplatform.

Not only satisfied promoting the requirement of amplitude, and realized the convenient purpose of transferring in whole construction place or workshop.

As improvement of the present invention; Said bolt device comprises three assemblies, and one of them is the annulus I that is arranged at the mast end, and another is the annulus II nearer apart from the end; Also having one is the hanger I far away apart from the end; Correspondence is provided with and the cooresponding pin hole I of annulus I on the said workplatform, and with the pin hole II of the corresponding setting of hanger I, said annulus I and pin hole I are fixed as the pivot point of mast through latch; But said annulus II is fixed in workplatform through luffing strut member I, but said hanger I is fixed through luffing strut member II and pin hole II.As preferred bolt device, the invention discloses technique scheme, adopt this technical scheme after, whole mast is the strong point with annulus I place, but the luffing strut member through annulus II and hanger I place has better been realized the lifting variation of amplitude of mast.

As further improvement of the present invention, but the present invention has provided the selection of luffing strut member respectively, but said luffing strut member I comprises jack and bolt pin, and said bolt pin is positioned at jack top, fixes with the annulus II.But said luffing strut member II comprises outer sleeve, inner core and latch; Said outer sleeve is provided with at least one fixed orifice, and said outer sleeve is fixed in mast, and said inner core is fixed in workplatform; Said inner core slides in the sleeve outside, and is fixed in the fixed orifice of outer sleeve through latch.Thereby the mast that can satisfy the different strong points promotes needs.

As the preferred version of elevator system, the invention discloses said elevator system is chain block.One end of chain block is fixed in the lifting-point device place of mast, and an other end is used to hang weight as free end.

As improvement further of the present invention, said workplatform bottom surface also is fixed with roller.Thereby can workplatform be moved to the position that needs lifting in the warehouse, the slewing arrangement cooperation with workplatform can better realize transferring the purpose of convenience, whole motion.

In sum; After adopting the disclosed technical scheme of the present invention, can accomplish the lifting work in workyard or the workshop, not only saves energy very convenient, efficiently; And avoided dependence to the workshop power supply, can under the situation of rationing the power supply or having a power failure, accomplish the lifting task.

Description of drawings

Fig. 1 is the scheme drawing of derrick crane

Wherein 1-workplatform, 2-mast, 2-1-lifting-point device, 2-2-bolt device, 3-changing-breadth system, 4-chain block, 5-counterweight, 3-1-jack, 3-2-bolt pin, 3-3-outer sleeve, 3-4-inner core, 3-5-fixed orifice, 1-1-pin hole I, 1-2-pin hole II, 2-1-1-hanger II, 2-1-2-hanger III, 2-2-1-annulus I, 2-2-2-annulus II, 2-2-3-hanger I.

The specific embodiment

Embodiment 1

As shown in Figure 1, derrick crane comprises: workplatform 1, and said workplatform 1 is rotary workplatform 1, also is provided with on the said workplatform 1 and the cooresponding connecting element of bolt device, is respectively;

One mast 2, said mast 2 is fixed in workplatform one side, and said mast comprises,

One lifting-point device 2-1,

One bolt device 2-2;

One changing-breadth system 3, but said changing-breadth system 3 comprises securing supports and luffing strut member;

One elevator system, said elevator system are on hanger II 2-1-1 and the hanger III 2-1-2 for chain block 4 is fixed in the mast lifting-point device in the present embodiment;

One counterweight 5, said counterweight 5 is fixed in workplatform 1 opposite side corresponding to mast 2;

The assembling of derrick crane, its step is following

(1) chain block 4 is hung on hanger II 2-1-1 and hanger III 2-1-2 on the mast 2;

(2) with 32 tons of drivings long mast 2 single-points of 8m are tiltedly winched to rotatable workplatform 1 next door; Make mast 2 and ground written treaty 45; Bolt device 2-2 one end of mast 2 is moved to the position of the pin hole I 1-1 on the rotary working platform 1; With pin pin hole I 1-1 is connected with annulus I 2-2-1, and sets up insurance, as first strong point at pinhole.

(3) strut member at mounting circular ring II 2-2-2 place, but this support level adopts luffing strut member I thousand to support.At first jack 3-1 screw rod is raised to a certain height, makes bolt can pass the pin hole of the annulus II 2-2-2 on the mast 2, fix with bolt pin 3-2 then, as second strong point.

(4) hanger I 2-2-3 is installed, but the outer sleeve 3-3 of luffing strut member II is articulated in the hanger I 2-2-3 place on the mast 2, the pin hole II 1-2 place of again that inner core 3-4 is hinged and rotating basis, the pin of all hinged places is set up insurance.Then inner core 3-4 is inserted outer sleeve 3-3, depth of penetration depends on the amplitude of mast 2, after confirming like amplitude, pin is passed the fixed orifice 3-5 of outer sleeve 3-3, thereby inner core 3-4 can withstand on generation bearing capacity on the pin like this, as another strong point.

(5) add suitable counterweight 5 at rotary working platform 1 afterbody, prevent to topple.Assembling is as shown in Figure 1 after accomplishing.

Certainly, moving of rotary working platform 1 can also be provided with roller in its bottom for ease, because structure is comparatively simple, do not indicate among the figure of the present invention.

The force analysis and the checking computations of embodiment 2 hoisting cranes

(1) mast checking computations

Mast 2 adopts solid drawn pipe to be made, and material uses Q345.The external diameter of pipe is 180mm, and wall thickness is 50mm.The lifting angle of using middle mast 2 is only used a suspension centre 30 ° ~ 60 ° (with ground-surface angle) at every turn in two suspension centres, suspension centre adopts 5 tons of chain blocks to promote weight, and under the existing check load least favorable situation, can mast satisfy intensity and stability requirement.When mast remained on 60 °, concentrated force was the biggest lifting capacity of chain block, and distributed force is the gravity of mast, under this load, and suffered internal force

So intensity meets the demands.

The stability checking:

So stability meets the demands.

When mast remains on 30 °,

Through tentative calculation, this angle can be born 30 tons weight.Stability reduces to meet the demands certainly owing to angle.

(2) hanger checking computations

Radius through hanger calculates,

Satisfy requirement of strength.

Claims

1. derrick crane is characterized in that, said derrick crane comprises:

One lifting-point device,

One bolt device;

2. derrick crane as claimed in claim 1; It is characterized in that: said bolt device comprises three assemblies, and one of them is the annulus I that is arranged at the mast end, and another is the annulus II nearer apart from the end; Also having one is the hanger I far away apart from the end; Correspondence is provided with and the cooresponding pin hole I of annulus I on the said workplatform, and with the pin hole II of the corresponding setting of hanger I, said annulus I and pin hole I are fixed as the pivot point of mast through latch; But said annulus II is fixed in workplatform through luffing strut member I, but said hanger I is fixed through luffing strut member II and pin hole II.

3. derrick crane as claimed in claim 2 is characterized in that: but said luffing strut member I comprises jack and bolt pin, and said bolt pin is positioned at jack top, fixes with the annulus II.

4. derrick crane as claimed in claim 2; It is characterized in that: but said luffing strut member II comprises outer sleeve, inner core and latch; Said outer sleeve is provided with at least one fixed orifice, and said outer sleeve is fixed in mast, and said inner core is fixed in workplatform; Said inner core slides in the sleeve outside, and is fixed in the fixed orifice of outer sleeve through latch.

5. derrick crane as claimed in claim 1 is characterized in that: said elevator system is a chain block.

6. derrick crane as claimed in claim 1 is characterized in that: said workplatform bottom surface also is fixed with roller.