CN102912985A

CN102912985A - Short-distance pumping method of concrete pump truck

Info

Publication number: CN102912985A
Application number: CN2011102176245A
Authority: CN
Inventors: 董连城
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-01
Filing date: 2011-08-01
Publication date: 2013-02-06
Anticipated expiration: 2031-08-01

Abstract

The invention provides a short-distance pumping method of a concrete pump truck. The short-distance pumping method can be realized by utilizing a part of a cantilever crane at the tail end without unfolding the whole cantilever crane when the concrete pump truck pumps in short distance during construction. In the prior art, pumping is realized by unfolding the cantilever crane long in few tens of meters, and winding a part of the cantilever crane at the tail end when in short-distance pumping and additionally arranging an assisting discharging device and a discharging hose. The short-distance pumping method of additionally arranging the discharging device and winding the cantilever crane at the tail end is complicated in structure and difficult to realize, and severe affection can be caused on stress of the cantilever crane. In order to overcome the above defects, the invention provides a method which enables the cantilever crane to realize short-distance pumping in a reasonable stress state by utilizing a part of the cantilever crane without winding the cantilever crane at the tail end and additionally arranging the assisting discharging device and the discharging hose on the cantilever crane. By arranging a pipeline switching device at a rotating tower of the cantilever crane, assorted pipes of the cantilever crane can be switched, so that construction in a manner that the whole cantilever crane is used in long-distance pumping and only a part of the cantilever crane is used in short-distance pumping is more reasonable and practical.

Description

The method of concrete mixer short distance pumping

Technical field

The present invention relates to concrete mixer, specifically relate to the method for concrete mixer short distance pumping of concrete.

Background technology

Be widely used in now the pump truck of concreting when pumpdown, launch tens meters jib.Concrete by being installed in the jib pipe arrangement on the jib, is pumped to the place to use under the High Pressure of pumping system.Because the jointed shaft between jib and the pipe bent position in the jib pipe arrangement be on same axis, so jib and jib pipe arrangement can be curled up and received or launch under the control of arm support oil cylinder.

Concrete mixer will launch tens meters jibs and realize pumping construction when carrying out elevation or the larger pumping construction of span.When pumping of concrete elevation or span are little, only need to use a part jib to construct.This moment part end arm support receipts of curling up, concrete is by the jib pipeline on the part jib that launches and be installed in auxiliary discharging device and the additional discharging flexible pipe realization pumping construction that launches arm support tail end.Thisly can reduce pumping line length, reduce the pumping mode that jib is holded up height, reduce system pressure, pumping pressure and pipe wear, can effectively reduce use cost.

Although the short distance pumping mode can produce above good effect.But complex structure realizes that difficulty is larger.The end arm support of particularly curling up and receiving increases the pumping method that adds discharging flexible pipe and subsidiary conduit switching mechanism, weight is all concentrated acted on the ends that launch jib.To the stressed very adverse influence that produced of jib.

Summary of the invention

The present invention is directed to the deficiency that existing concrete pump truck short distance pumping construction exists, provide and to have made concrete mixer when realizing the operation of short distance pumping concrete construction, the receipts of needn't curling up end arm support, and not be used in and the subsidiary conduit switching mechanism is set on the deploying portion jib and needn't increases additional discharging flexible pipe, in the situation of jib reasonable stress, can carry out the method for short distance pumping construction.

The present invention is on the head end jib pipe arrangement of distance head end jib and the suitable distance of capstan head pedestal jointed shaft, the jib pipe arrangement is disconnected, and this section is to part jib pipe arrangement and the rotatable head end operating rocker pipe of bend pipe formation centered by capstan head jointed shaft axis of jointed shaft.Equally on the second section jib pipe arrangement of distance second section jib and the suitable distance of the 3rd joint jib jointed shaft, the jib pipe arrangement is disconnected, cleaved facet consists of the rotatable terminal operating rocker pipe centered by second, third joint jib jointed shaft axis to part jib pipe arrangement and the bend pipe of this jointed shaft.This moment, all the jib pipe arrangement was comprised of two parts: part between two switching pipelines; The terminal afterwards part of pipeline of switching.

At the jib of concrete mixer and the hinged place of jib capstan head the concrete duct switching device shifter is set.This device can be big or small apart from ground according to the pumping concrete construction operation, and the jib pipe arrangement is switched.During the long term distance pumping, the whole jibs of choice for use and corresponding jib pipe arrangement.During short closely pumping, curl up and receive the part head end jib of close jib brick tower, choice for use part end arm support and corresponding jib pipe arrangement satisfy the requirement of pumping concrete construction operation.

The objective of the invention is to realize like this ground:

Pipeline switching device is installed on the head end jib at jib capstan head place, can rotate centered by jib and jib capstan head hinge axes with the head end jib.This device is made of drive sprocket, head end sprocket wheel, terminal sprocket, terminal gear, driving chain, locking hook.Wherein the rotatable switching pipeline of head end sprocket wheel and head end coaxial line is fixedly linked, and driving chain links to each other it with drive sprocket.Terminal gear and terminal rotatable switching pipeline coaxial line are fixedly linked.During the short distance pumping, head end jib and second section, the 3rd joint jib are in the receipts state of curling up, and it is constant that locking hook guarantees that first, second two joints jib is in the receipts state relative position of curling up.Terminal sprocket and the engagement of terminal gear, driving chain links to each other terminal sprocket with drive sprocket.

In the pipe end junction sealing device is set, guarantees to connect reliable.

The present invention compares with prior art, has following good effect:

1. simple in structure, be easy to realize, make the short distance pumping reduce pressure, reduce wear, the positive effect such as energy-saving and cost-reducing obtains embodying.

2. can change the framework form of short distance pumping construction, minimizing additional facilities and they are on the stressed impact of jib.

3. in the process that short distance pumping selection jib is constructed, improve work efficiency, the pump truck job stability is obviously promoted.

Description of drawings

Fig. 1 is the working state schematic representation of pump truck short distance pumping of concrete before the invention process.

Fig. 2 is the working state schematic representation of pump truck short distance pumping of concrete after the invention process.

Fig. 3 is pipeline switching device operating principle schematic diagram.

Fig. 4 is the pump truck closely pumping jib capstan head place working state schematic representation of receiving portions jib of curling up.

Fig. 5 is that pump truck launches whole jib long distance pumping jib capstan heads place working state schematic representation.

1 is the jib capstan head among the figure, the 2nd, and head end jib, the 3rd, the jib pipe arrangement of head end jib, 4 is the 3rd joint jibs, and 5 is jib pipe arrangements of the 3rd joint jib, the 6th, and the second section jib, the 7th, the jib pipe arrangement of second section jib, the 8th, end portion jib, the 9th, the jib pipe arrangement of end portion jib, 10 pipeline switching devices, the 11st, the changeable arm pipe of head end, the 12nd, terminal changeable arm pipe, the 13rd, drive sprocket, the 14th, head end sprocket wheel, the 15th, terminal sprocket, the 16th, terminal gear, 17 driving chains, the 18th, locking hook.

The specific embodiment

The present invention will be further described below in conjunction with accompanying drawing

Show among the figure, implement the present invention before, when carrying out the short distance pumping or launch whole jib pumping constructions, perhaps curl up and receive the state that end arm support uses auxiliary discharging device and additional discharging flexible pipe to construct.

Show among the figure that behind enforcement the present invention, when carrying out the short distance pumping, the receipts of only part head end jib need being curled up utilize the part end arm support to carry out the duty of Concrete Pumping Construction.

Fig. 3 is pipeline switching device operating principle schematic diagram.

Show among the figure, when carrying out the short distance pumping construction, the head end jib 2 of concrete mixer, second section jib 6, the three joint jibs 4 are in the receipts state of curling up.Locking hook makes head end two joint jibs be in relative static conditions.At this moment, be installed in the terminal sprocket 15 on the pipeline switching device 10 on the head end jib, be in engagement with terminal gear 6.Drive sprocket 13 drives the changeable arm pipe 11 of head end, terminal changeable arm pipe 12 rotation docking.Concrete pumps from the capstan head bend pipe, and through the changeable arm pipe 11 of head end, the terminal changeable arm pipe 12 directly jib pipe arrangement 9 of the part end arm support of the jib pipe arrangement 5 by the 3rd joint jib and back is pumped to the job location.

Also show among the figure, when the whole jibs of expansion carry out the long term distance pumping, at first utilize the drive sprocket 13 of switching device shifter, drive the changeable arm pipe 11 of head end, terminal changeable arm pipe 12 rotations.The changeable arm pipe 11 of head end is docked, the state that terminal changeable arm pipe 12 docks with the jib pipe arrangement 5 of the 3rd joint jib with jib pipe arrangement 3 to the head end jib.

Fig. 4 is that pump truck is curled up the receiving portions jib closely during pumping concrete construction, jib capstan head place working state schematic representation.

Show among the figure that when the short distance pumping construction, head end jib 2 and the second jib 6, the 3rd joint jib 4 are in the receipts state of curling up.The jib pipe arrangement 3 of head end jib, the jib pipe arrangement 7 of second section jib is not participated in the state of pumping construction.

Fig. 5 is pump truck when launching whole jib long distance pumping concrete construction, jib capstan head place working state schematic representation.

Show among the figure that when long-distance pumping was constructed, head end jib 2 and the second jib 6, the 3rd joint jib 4 were in deployed condition.All the jib pipe arrangement is participated in the state of pumping construction successively.At this moment, locking hook 18 discharges, head end jib 2, second section jib 6, the three joint jibs 4, and part end arm support 8 sequential deployments.Terminal gear 16 also breaks away from engagement with terminal sprocket 15.Concrete pumps from the capstan head bend pipe, successively through the changeable arm pipe 11 of head end, the jib pipe arrangement 3 of head end jib, the jib pipe arrangement 7 of second section jib, the jib pipe arrangement 5 of terminal changeable arm pipe 12, the three joint jibs, the jib pipe arrangement 9 by the part end arm support is pumped to the job location.

Claims

1. the method for concrete mixer short distance pumping, comprise concrete pumping structure, pumping line, jib capstan head, jib, jib pipe arrangement, discharging flexible pipe, concrete needs to be pumped to the place to use by whole jib pipe arrangements or part jib pipe arrangement during construction, it is characterized in that, when the short distance pumping construction, utilize pipeline switching device only to use the part end arm support that concrete pump is delivered to the place to use.

2. the method for concrete mixer short distance pumping as claimed in claim 1, it is characterized in that, curl head end part jib during the short distance pumping, the changeable arm pipe of head end (11) perforation that is connected with terminal changeable arm pipe (12) launches the end portion jib and carries out pumping construction.

3. the method for concrete mixer short distance pumping as claimed in claim 1, it is characterized in that, pipeline switching device is arranged on head end jib and the jib capstan head place that is articulated and connected, by drive sprocket (13) through chain (17) drive respectively be fixedly mounted on the changeable arm pipe of head end (11) and with sprocket (14) and the sprocket (13) of its coaxial rotating, sprocket (13) is meshed with terminal gear (16) before jib launches or during the short distance pumping, terminal gear (16) be fixedly connected with terminal changeable arm pipe (12) and with its coaxial rotating.