CN202117339U

CN202117339U - Sand discharging box

Info

Publication number: CN202117339U
Application number: CN2011201855225U
Authority: CN
Inventors: 洪国松; 程书华; 李正华; 周文胜; 董苏洲; 陈水祥; 黄利顺; 孙锋
Original assignee: Zhejiang Jinggong Steel Structure Co., Ltd.
Current assignee: Zhejiang Jinggong Steel Structure Group Co Ltd
Priority date: 2011-06-03
Filing date: 2011-06-03
Publication date: 2012-01-18
Anticipated expiration: 2021-06-03

Abstract

The utility model mainly discloses a sand discharging box, which comprises a sand storage tank, sand discharging valves, a limit valve plate and a sliding cavity core. The sand storage tank comprises a bottom plate and a tank body. The tank body is in a hollow tubular structure which is vertically fixed on the bottom plate, and sand discharging ports are arranged at the bottom of the lateral side of the tank body. The sand discharging valves blocked at the sand discharging ports are limited by the limit valve plate and fixed on the outer lateral side of the tank body to be capable of sliding axially. The sliding cavity core is movably arranged inside the tank body of the sand storage tank. The sand discharging box is applied in the construction discharging processes, ensures the discharging process to be reliable and stable, obtains high-efficient and high quality discharging work, and saves use of auxiliary materials and cost for purchasing a large number of lifting jacks.

Description

A kind of unloading sandbox

Technical field

It is relevant that the utility model relates in the steel pipe pile support cast-in-place beam construction off-load technology, and special and a kind of large span, that big cantilevered structure unloads sandbox is relevant.

Background technology

At present; The way that in the Steel Structure Installation process, generally adopts is: member is carried out segmental hoisting; Adopt again and support temporarily; Structure supports unloading after installing and being shaped again temporarily, and the therefore interim uninstall process that supports is the operation that structure construction adopts the aiding support method to construct and must run into.For big overhanging steel structure, supporting removal is the difficult problem of a more complicated.The process of supporting removal unloading is actually because the continuous variation of fringe conditions causes the process that structure internal force heavily distributes continuously.

In order to address the above problem, the inventor designs a kind of unloading sandbox, and this case produces thus.

The utility model content

The purpose of the utility model provides a kind of unloading sandbox, in the uninstall process that is applied to construct, guarantees the uninstall process reliable and stable, realizes high efficiency, the high-quality of unloaded operation, has saved the use of auxiliary material and a large amount of jack acquisition expenses.

In order to achieve the above object, the utility model is realized through following technical scheme:

A kind of unloading sandbox comprises sand tank, unloads the sand valve, limits valve plate, sliding cavity core; Sand tank comprises base plate and tank body, and the tank body of hollow tube structure vertically is fixed on the base plate, offers in the tank body side bottom and unloads husky mouthful; Retaining limits at the limited valve plate of sand valve that unloads that unloads husky mouthful, and being fixed on the tank body lateral surface can move axially; The sliding cavity core is movably installed in the tank interior of sand tank.

Described sliding cavity core is made up of cylinder and the steel plate that is fixed on the cylinder two ends.

The described sand mouth that unloads is symmetrically distributed two, unloads the sand valve for closely pasting the arc at the tank body lateral surface, unloads the gag lever post that sand valve upper end has radial projection.

Described limit valve plate is an annular, and the corresponding limit of interior ring valve plate place offers groove.

Described gag lever post is positioned at the top of limit valve plate.

After adopting such scheme, the utlity model has many beneficial effects: 1, make the construction uninstall process reach the purpose of electrodeless unloading, guarantee the smooth and easy of uninstall process.2, synchronously controllability, compatibility of deformation property are good.3, can carry out recycle.4, Stability Analysis of Structures, safe.5, construction cost is relatively low, and processing and fabricating is convenient.

Description of drawings

Fig. 1 is the assembling sketch map of the utility model preferred embodiment;

Fig. 2 does not install the structural representation of sliding cavity core for the utility model preferred embodiment;

Fig. 3 is the utility model preferred embodiment installation structural representation.

The specific embodiment

In conjunction with accompanying drawing, preferred embodiment explains further details to the utility model.

A kind of unloading sandbox comprises sand tank 1, unloads sand valve 2, limits valve plate 3, sliding cavity core 4.

Sand tank 1 is to be made up of base plate 11 and tank body 12, and tank body 12 is hollow tubular products, vertically places, and is fixed on the base plate 11, forms the structure that end uncovered is arranged, and so conveniently in tank body 12, stores sand.Offer unloading of two symmetries husky mouthful 13 in the lateral surface bottom of tank body 12, draw off from unloading husky mouthful 13 behind the sand pressurized of tank body 12 inside.

Unloading sand valve 2 is to unload husky mouthful 13 baffle plate, controls the openings of sizes of unloading husky mouthful 13, speed and active force when convenient like this control unloads.Because tank body 12 is hollow cylinders, so in order to fit closely, unloading sand valve 2 is arcs that match with tank body 12 lateral surfaces.

Unload between sand valve 2 and the tank body 12 fixedly be by the limit valve plate 3.Unloading valve plate 3 is annular elements, is enclosed within to unload outside sand valve 2 and the tank body 12, both is limit unload sand valve 2 tank body 12 lateral surfaces of can fitting together admittedly, moves axially the openings of sizes that husky mouth 13 is unloaded in convenient like this control.The gag lever post 21 that radially outward has a projection in the upper end of unloading sand valve 2 to unloading sand valve 2 application of forces, prevents to limit valve plate 3 to deviate from during gag lever post 21 handled easilies simultaneously.

Sliding cavity core 4 comprises the steel plate 42 of cylinder 41 and two circles, and the size of cylinder 41 is as the criterion in tank body 12, packing into, and each solid welding of two ends has a block plate 42.

Unloading principles in the utility model is: with sand tank 1, unload sand valve 2, limit valve plate 3 threes install, and at sand tank 1 sand of packing into, reinstall sliding cavity core 4 then.Moving chamber core 4 upper support are lived the node of unloading, and sand tank 1 bottom is connected with interim bracing frame, is full of in inside under the situation of sand; Can play the supporting role of similar jack; And the release through the grains of sand makes the support portion be moved, thereby can reach the process of slow unloading.

The modeling of the utility model can be calculated as follows: finish the stressed gradually and compression of the interim support in back in lifting; Support, top is stressed to be , and decrement is .The primary condition that the end condition that installs with agent structure unloads as supporting removal; Suppose that support, top sandbox shortening value relatively is

; Because this support top end pressure of unloading reduces and produces resilience thereupon; Pressure has reduced , and rebound value is

.The end points deflection is then less than

so main couple is encorbelmented; Therefore sandbox control deflection is greater than actual deflection, and actual deflection does

(1-1)

If support stiffness is

, then have

(1-2)

, adopt FEM model the contracting of sandbox of method simulation of sedimentation support carriers to fall in calculating; Making the vertical settling amount of support carriers is sandbox decrement

; Support owing to be stressed, self decrement is

.This moment, main couple was encorbelmented the end points deflection for

.In like manner have:

(1-3)

Finite element simulation calculation process that hence one can see that and the actual state consistency that unloads have considered to support the compression of self, and simulation process is near virtual condition, and is comparatively accurate.

It is very convenient that the utility model is used for the construction unloading phase of space structures; It has solved stationarity, impact problem in the construction uninstall process of complex original large space steel work well; Both can replace the supporting role of jackscrew, in the unloading engineering, can reach the purpose of multiple spot classification unloading synchronously, compatibility of deformation, slow transition.In application process, carry out strict monitoring to the distortion situation of unloading, guarantee the synchronous coordination property of each unloading point.

The utility model has obtained good application in the construction uninstall process of large-span space structure, solved the technical barrier of puzzlement always, realizes high efficiency, the high-quality of unloaded operation, the use of also having saved auxiliary material.The utility model relies on the mechanical model of unloading sandbox, and the accurate scope of a malformation is provided.Under the prerequisite that guarantees the uninstall process reliable and stable, saved a large amount of jack acquisition expenses.

The foregoing description only be used to explain utility model design of the utility model, but not to the qualification of the utility model rights protection allly utilizes this design that the utility model is carried out the change of unsubstantiality, all should fall into the protection domain of the utility model.

Claims

1. a unloading sandbox is characterized in that: comprise sand tank, unload the sand valve, limit valve plate, sliding cavity core; Sand tank comprises base plate and tank body, and the tank body of hollow tube structure vertically is fixed on the base plate, offers in the tank body side bottom and unloads husky mouthful; Retaining limits at the limited valve plate of sand valve that unloads that unloads husky mouthful, and being fixed on the tank body lateral surface can move axially; The sliding cavity core is movably installed in the tank interior of sand tank.

2. a kind of unloading sandbox as claimed in claim 1 is characterized in that: described sliding cavity core is made up of cylinder and the steel plate that is fixed on the cylinder two ends.

3. a kind of unloading sandbox as claimed in claim 1 is characterized in that: the described sand mouth that unloads is symmetrically distributed two, unloads the sand valve for closely pasting the arc at the tank body lateral surface, unloads the gag lever post that sand valve upper end has radial projection.

4. a kind of unloading sandbox as claimed in claim 1 is characterized in that: described limit valve plate is annular, and the corresponding limit of interior ring valve plate place offers groove.

5. a kind of unloading sandbox as claimed in claim 3 is characterized in that: described gag lever post is positioned at the top of limit valve plate.