CN105756686A - Telescopic boom frame system and concrete spraying trolley - Google Patents
Telescopic boom frame system and concrete spraying trolley Download PDFInfo
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- CN105756686A CN105756686A CN201410782472.7A CN201410782472A CN105756686A CN 105756686 A CN105756686 A CN 105756686A CN 201410782472 A CN201410782472 A CN 201410782472A CN 105756686 A CN105756686 A CN 105756686A
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- telescopic
- jib
- bore section
- telescopic arm
- piston
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B13/00—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
- B05B13/005—Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00 mounted on vehicles or designed to apply a liquid on a very large surface, e.g. on the road, on the surface of large containers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
- B05B15/60—Arrangements for mounting, supporting or holding spraying apparatus
- B05B15/62—Arrangements for supporting spraying apparatus, e.g. suction cups
- B05B15/628—Arrangements for supporting spraying apparatus, e.g. suction cups of variable length
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Abstract
The invention discloses a telescopic boom system and a concrete spraying trolley. The telescopic boom system comprises a telescopic boom (3) and multiple stages of boom frames, wherein the telescopic boom is connected to the last-stage boom frame (4), a telescopic accommodating cavity (5) in a cylindrical hole shape is formed in the last-stage boom frame, a cylindrical cylinder barrel part is formed at the end part of the telescopic boom (3) and is accommodated in the telescopic accommodating cavity in a telescopically movable manner, a piston (7) and a piston rod (8) are arranged in a barrel cavity (6), one end of the piston rod is connected with the piston, the other end extends into the telescopic accommodating cavity and is connected with the last-stage boom frame, and a rodless cavity oil port (A) and a rod cavity oil port (B) are further formed in the piston rod. The telescopic boom adopts cylindrical arm frames with high processing precision instead of a general box-shaped arm or other polygon arm frames, so that structural deformation caused by welding and the like is avoided, the stability during work is high, and the overall performance is better. Further, an annular gap between the arm frames is small, entering of a springback concrete material can be prevented effectively during construction, and jamming is avoided.
Description
Technical field
The present invention relates to concrete works mechanical field, in particular it relates to a kind of concrete ejection chassis and telescopic jib system thereof.
Background technology
Concrete ejection chassis is the conventional concrete spraying equipment of one carrying out supporting construction in the fields such as railway tunnel, vcehicular tunnel, water power tunnel, underground power house, subway engineering, rock engineering, underground engineering.Wherein, top robot section is the important process parts of concrete ejection chassis, top robot section is rendered as a dynamic process in real work, requirement has the multiple composite moves such as flexible, pitching, revolution, shower nozzle swing, revolution, nozzle oscillation, to realize flexible operating, it is possible to gunite concrete timely and accurately.Therefore, being arranged on the shower nozzle assembly on the robot section of top and also have different attitudes in multiple composite move, service load is multiple direction.
Because the construction environment of concrete ejection chassis is complicated, for making equipment have stronger environmental suitability, the widely used telescopic arm form of jib of top robot section.As it is shown in figure 1, telescopic arm 3 is telescopically connected on the minor details jib 4 of multistage jib, shower nozzle 1 and shower nozzle assembly 2 are pivotably mounted on the end of telescopic arm 3, and the head in the multistage jib that head and the tail are sequentially hinged saves jib and is articulated on vehicle body.So, the triplicity of the pivoting action of the stretching motion of telescopic arm 3, the pivoting action of shower nozzle assembly 2 and multistage jib, define flexile various operating attitude.Several exemplary operation states that Fig. 1 is shown in which, arrow therein represents the telescopic moving direction of telescopic arm 3.
In stretch mode, the telescopic arm of early stage adopts screw drive.Along with the development of hydraulic technique, the telescopic jib system of prior art is mainly made up of telescopic arm 3, minor details jib 4, telescopic oil cylinder etc..The cross section structure of telescopic arm 3 mainly has box-shaped (or square) structure, it is possible to adopt other cross section structures such as triangle, pentagon, U-shaped.Compared with other section forms, box section telescopic arm has good bending resistance and torsional rigidity, its manufacturing process is relatively easy simultaneously, only need to be welded by upper and lower two cover plates and left and right two webs, and therefore box section is a kind of section form employed up in current telescopic arm.
Due to the main load bearing component that telescopic jib system is solidifying soil shotcreting jumbo, the flexible reliability of telescopic arm 3 and adaptability for working condition directly affect overall performance.And the telescopic arm 3 of box structure and minor details jib 4 etc. need to by upper and lower two cover plates and left and right two web welding, inevitably there is the deformation of uncertain sweating heat in Welding Structure, the shape causing telescopic arm box section can deform upon, service behaviour and the flexible reliability of telescopic arm are had certain impact by the box section shape of deformation, thus affecting equipment serviceability.Although the welding operation of box-shaped arm is simple, but weld seam is many, affects load distribution after weld crack diffusion, and the even disconnected arm fault of weld cracking can occur time serious.And, due to reasons such as welding deformation and minimizing telescoping friction, larger gap is there is between telescopic arm 3 and minor details jib 4, little then 1～2mm, greatly then 10mm, solidifying soil shotcreting jumbo is often operated in again in the harsh environments being covered with dust all over and existing a large amount of resilience concrete material, the naked leakage in gap, resilience concrete material is easily accessible the gap between telescopic arm 3 and minor details jib 4, results in clamping stagnation, has a strong impact on the service behaviour of telescopic arm 3.
Summary of the invention
It is an object of the invention to provide a kind of telescopic jib system and have the concrete ejection chassis of this telescopic jib system, the stability of this telescopic jib system is high, and overall performance is better.
For achieving the above object, the invention provides a kind of telescopic jib system, including the multistage jib that telescopic arm and head and the tail are sequentially hinged, described telescopic arm is connected to the minor details jib in described multistage jib, the flexible accommodation chamber of cylindrical hole shape it is formed with in described minor details jib, the end of described telescopic arm is formed as columnar bore section, it is contained in described flexible accommodation chamber this bore section Telescopic movable and outwards passes, the into the barrel chamber of described bore section is provided with piston and piston rod, described barrel chamber is divided into rod chamber and rodless cavity by described piston, one end of described piston rod connects described piston, the other end stretches into described flexible accommodation intracavity and connects described minor details jib, described piston rod is additionally provided with rodless cavity hydraulic fluid port and the rod chamber hydraulic fluid port of connection corresponding to described rodless cavity and rod chamber respectively.
Preferably, the periphery wall of described bore section being formed with rotary stopper platform, the end of described minor details jib is provided with rotary stopper slide block, and this rotary stopper slide block can be resisted against on described rotary stopper platform to limit the rotation of described bore section.
Preferably, piston end that described bore section includes stretching in described flexible accommodation chamber and from the outwardly directed external part in described flexible accommodation chamber, described limiting platform radially inwardly formed on the outer circle wall of described external part and and described piston end between be formed for spacing stage portion of stretching.
Preferably, the end of described minor details jib is also equipped with surrounding the dust slinger of the periphery wall of described bore section.
Preferably, the internal face in described flexible accommodation chamber is provided with slip ring mounting groove, is provided with slip ring in described slip ring mounting groove, and described bore section is protruding through described slip ring.
Preferably, described slip ring is copper ring or nylon ring.
Preferably, the internal face in described flexible accommodation chamber is also formed with oils and fats accumulator tank, the outer wall of described minor details jib is communicated with the pouring orifice of described oils and fats accumulator tank.
Preferably, at least formed with two described slip ring mounting grooves of axially spaced-apart on the internal face in described flexible accommodation chamber, described oils and fats accumulator tank is arranged between two described slip ring mounting grooves.
Preferably, the circumferential clearance formed between outer circumference surface and the internal face in described flexible accommodation chamber of described bore section is not more than 0.1mm.
On this basis, present invention also offers a kind of concrete ejection chassis, this concrete ejection chassis includes car body, shower nozzle assembly and above-mentioned telescopic jib system, and this telescopic jib system is arranged on described car body, and described shower nozzle assembly is arranged on described telescopic arm.
According to technique scheme, in the telescopic jib system of the present invention, telescopic arm no longer adopts common box arm or other polygon jib, but have employed the cylinder jib that machining accuracy is high, the bore section of telescopic arm is telescopically inserted in the flexible accommodation chamber of the cylindrical hole shape of minor details jib, formation barrel chamber coordinate, both can polish, malformation will not be caused because of welding etc..Simultaneously, the bore section of telescopic arm can as the cylinder barrel of oil cylinder, the piston rod of oil cylinder stretches in flexible accommodation chamber and connects minor details jib, when passing into pressure oil by the hydraulic fluid port of piston rod, telescopic arm can be controlled preferably stretch out from flexible accommodation chamber or retract, stability during work is high, and overall performance is better.And owing to the flexible accommodation chamber of cylinder jib and cylindrical hole shape is prone to polish so that annular gap therebetween is little, can effectively prevent the entrance of resilience concrete material when construction, it is to avoid cause jam.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, is used for explaining the present invention, but is not intended that limitation of the present invention together with detailed description below.In the accompanying drawings:
Fig. 1 is the telescopic jib system of concrete ejection chassis jib course of action schematic diagram in operation process, which show multiple position of rotation of multiple pivot positions of telescopic jib system and shower nozzle assembly；
Fig. 2 is the end structure schematic diagram of a kind of telescopic jib system of the prior art, and wherein telescopic oil cylinder is in full retracted mode；
Fig. 3 and Fig. 2 is similar, the difference is that, telescopic oil cylinder is in state of entirely stretching out；
Fig. 4 is the K-K sectional view in Fig. 2；
Fig. 5 is the L-L sectional view in Fig. 2；
Fig. 6 is the end structure schematic diagram of the telescopic jib system according to the preferred embodiment of the present invention；
Fig. 7 is the close-up schematic view enclosing part in Fig. 6；
Fig. 8 is the structural representation of the rotary stopper slide block of the telescopic jib system in Fig. 6；
Fig. 9 is the M-M sectional view in Fig. 6；
Figure 10 is the N-N sectional view in Fig. 6.
Description of reference numerals
1 shower nozzle 2 shower nozzle assembly
3 telescopic arm 4 minor details jibs
5 flexible accommodation chamber 6 barrel chamber
7 piston 8 piston rods
9 rotary stopper platform 10 rotary stopper slide blocks
11 piston end 12 external parts
13 stage portion 14 slip rings
15 oils and fats accumulator tank 16 pouring orifices
20 telescopic oil cylinder 21 tailpiece of the piston rod dumpling ears
30 bearing pin 40 slide blocks
A rodless cavity hydraulic fluid port B rod chamber hydraulic fluid port
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains the present invention, it is not limited to the present invention.
In the present invention, when not making contrary explanation, the noun of locality of use typically refers to reference to upper and lower, left and right shown in the drawings such as " upper and lower, left and right "；It is inside and outside that " inside and outside " refers to relative to the profile of each parts itself.
Fig. 2 to Fig. 5 shows the end structure schematic diagram of a kind of telescopic jib system of the prior art.Wherein, the minor details jib 4 in telescopic arm 3, multistage jib is used that box-shaped arm configuration, and the left end of telescopic oil cylinder 20 is connected with minor details jib 4 by cylinder bottom hinge ear, and the right-hand member of telescopic oil cylinder 20 is hinged with telescopic arm 3 by tailpiece of the piston rod hinge ear 21, bearing pin 30.Specifically, referring to Fig. 4, the tailpiece of the piston rod hinge ear 21 of bearing pin 30 traverse telescopic oil cylinder 20 and the end pin-and-hole of telescopic arm 3, thus by hinged to telescopic oil cylinder 20 and telescopic arm 3.
Under the driving of telescopic oil cylinder 20, the telescopic arm 3 being inserted in minor details jib 4 is capable of expanding-contracting action, and Fig. 2 illustrates that telescopic oil cylinder 20 is in the state of full reduced time, and Fig. 3 shows that telescopic oil cylinder 20 is in the state entirely stretched out.Wherein, owing to nozzle 1 is arranged on shower nozzle assembly 2, shower nozzle assembly 2 is arranged on the end of telescopic arm 3, and shower nozzle assembly 2 is followed telescopic arm 3 and realized expanding-contracting action, to meet the needs of equipment construction.
It addition, capable of expansion and contraction for guaranteeing, frictional resistance is little, there is gap, between telescopic arm 3 and the minor details jib 4 of box-shaped of box-shaped as shown in Fig. 4 or Fig. 5.Simultaneously, owing to telescopic jib system expanding-contracting action operationally is comparatively frequent, if directly contacted between the outer square face of telescopic arm 3 and the interior square face of minor details jib 4, then during telescopic moving, certainly existing extruding scraping between contact surface, cause that partial structurtes deform, the contact area of square face is bigger simultaneously, frictional resistance is also big, and this all greatly affects the flexible reliability of telescopic arm.Therefore, the crimp occurred for reducing telescopic action, simultaneously for reducing jib contact area, as it is shown in figure 5, generally arrange the slide block 40 of strip between telescopic arm 3 and minor details jib 4, also grease etc. can be smeared on the contact surface of slide block 40, to reduce coefficient of friction, there is deformation because of overheated in the contact surface avoiding slide block 40, thus the resistance that compresses and rubs against reduced between telescopic arm 3 and minor details jib 4, improves the flexible reliability of telescopic jib system.
Owing to slide block 40 set up by needs, needing further extra clearance size, namely gap size increases the gauge of slide block 40 on the basis in original jib gap, and therefore the gap between telescopic arm 3 and minor details jib 4 more expands.So, after the concrete material ejected from shower nozzle 1 when solidifying soil shotcreting jumbo work arrives spray coating operations face, the concrete material generally having more than 10% can occur bounce-back to drop at work surface, the concrete material of part bounce-back then can enter in the gap between telescopic arm 3 and minor details jib 4, consequently, it is possible to generation clamping stagnation, large-size particles even can cause wedge shape stuck, affects the flexible reliability of telescopic jib system.When facing upward spray particularly in shower nozzle 1, rebound materials very easily falls in the gap between telescopic arm 3 and minor details jib 4, and the probability that causing trouble occurs is bigger.
Additionally, generally should arrange the material with lubrication or wear-resisting functions in the telescopic arm 3 of box-shaped to be used as slide block 40, with reducing friction resistance, but this will cause that box type telescopic boom structure is more complicated.For simplifying manufacturing process, slide block 40 is generally adopted and the steel plate of jib material of the same race, is directly welded on inwall, and the surface of slide block 40 is steel plate original blank face, and frictional resistance is big, and contact surface easily deforms upon, and affects the telescopicing performance of telescopic arm 3.
In view of this, the present invention is according to the concrete ejection chassis performance requirement to telescopic jib system, the construction environment of concrete ejection chassis, construction operating mode are considered with device structure, telescopic jib system is carried out system improvement, improve adaptability for working condition and the reliability of telescopic jib system, it is ensured that the equipment overall performance of solidifying soil shotcreting jumbo.
Referring to Fig. 6 to Figure 10, the telescopic jib system of the present invention includes telescopic arm 3 and multistage jib sequentially hinged from beginning to end, telescopic arm 3 is connected to the minor details jib 4 in multistage jib, the flexible accommodation chamber 5 of cylindrical hole shape it is formed with in minor details jib 4, the end of telescopic arm 3 is formed as columnar bore section, it is contained in flexible accommodation chamber 5 this bore section Telescopic movable and outwards passes, piston 7 and piston rod 8 it is provided with in the barrel chamber 6 of bore section, barrel chamber 6 is divided into rod chamber and rodless cavity by piston 7, one end of piston rod 8 connects piston 7, the other end stretches in flexible accommodation chamber 5 and connects minor details jib 4, piston rod 8 is additionally provided with the rodless cavity hydraulic fluid port A and rod chamber hydraulic fluid port B such as respectively through the connection corresponding to rodless cavity and rod chamber of the internal oil passages of piston rod 8.
Visible, in the telescopic jib system of the present invention, no longer adopt the box arm shown in Fig. 4 or Fig. 5 or other polygon jib, telescopic arm 3 have employed cylindrical shape jib, can machining accuracy high, can forming high-precision barrel chamber expansion fit with the flexible accommodation chamber 5 of cylindrical hole shape, annular gap therebetween can minimization.On the basis of existing processing technique, the circumferential clearance formed between outer circumference surface and the flexible internal face holding chamber 5 of bore section generally can be accomplished to be not more than 0.1mm, compared to the wide arc gap of the little then 1～2mm existed between the telescopic arm 3 shown in Fig. 4 or Fig. 5 and minor details jib 4, big then 10mm, it is greatly reduced already.So, minimal clearance both can reduce the vibration and noise of telescopic arm structure, improve stability and overall performance, the concrete material of bounce-back is also difficult to enter in the gap between telescopic arm 3 and minor details jib 4, large granular materials is more difficult to get access, can avoid causing jam, so that more adapting to severe working environment with the concrete ejection chassis of this telescopic jib system.Further, the end of minor details jib 4 also can be provided with the dust slinger of the periphery wall around bore section, such as dust slinger may be installed on the end face of minor details jib 4 or be connected directly between on the rotary stopper slide block 10 shown in Fig. 9, the inward flange of dust slinger is attached on the outer peripheral face of telescopic arm 3, it is prevented that external object enters.
The more important thing is, expansion fit precision between cylindrical shape jib and cylindrical vestibule is high, machining accuracy is high, contact surface is the machine finishing face of finishing, but not the coarse steel plate original blank face of box structure, compared to the telescopic arm 3 of box arm form, without because welding etc. cause partial structurtes to deform in the course of processing, thus the stability of the expanding-contracting action of telescopic arm 3 is high, overall performance is better.The telescopic arm 3 of cylindrical shape jib is just as piston rod, telescopic moving in cylindrical vestibule, simultaneously, the bore section of telescopic arm 3 can as the cylinder barrel of oil cylinder, the piston rod 8 of oil cylinder stretches in flexible accommodation chamber 5 and connects minor details jib 4, when passing into pressure oil by the rodless cavity hydraulic fluid port A or rod chamber hydraulic fluid port B of piston rod 8, it is possible to accurately, stably, reliably control telescopic arm 3 and stretch out from flexible accommodation chamber 5 or retract.When pressure oil enters the rodless cavity in bore section from rodless cavity hydraulic fluid port A, the fluid volume of rodless cavity increases, and the fluid of rod chamber passes through rod chamber hydraulic fluid port B oil return, then telescopic arm 3 stretches out in the flexible accommodation chamber 5 of minor details jib 4；Whereas if pressure oil enters rod chamber from rod chamber hydraulic fluid port B, then telescopic arm 3 bounces back in flexible accommodation chamber 5.
Owing to shower nozzle assembly 2 is arranged on the end of telescopic arm 3, the service load of this end is multiple direction, thus must limit telescopic arm 3 and rotate because load tilts while stretching motion.For this, rotate in stretching motion process for restriction telescopic arm 3, the periphery wall of the bore section of telescopic arm 3 arranges rotary stopper platform 9, rotary stopper slide block 10 is installed in the end of minor details jib 4 simultaneously, when telescopic arm 3 rotates, this rotary stopper slide block 10 can be resisted against on rotary stopper platform 9 to limit bore section rotation.Rotary stopper platform 9 can be the boss arranged on bore section outer peripheral face, but more easily, can directly process this rotary stopper platform 9 on the periphery wall of bore section.As shown in Figure 7, bore section includes stretching into the flexible piston end 11 held in chamber 5 and from the outwardly directed external part 12 in flexible accommodation chamber 5, limiting platform 9 radially inwardly formed on the outer circle wall of external part 12 and and piston end 11 between be formed with the stage portion 13 for stretching spacing.In other words, the part cylindrical wall of telescopic arm 3 can be processed into deltiod by the mode such as turning, milling, referring to Figure 10.The rotary stopper slide block 10 of shape shown in Fig. 8 can by being securedly mounted on the right side of minor details jib 4 around multiple securing members of lopping, as shown in Figure 9.When telescopic arm 3 stretches out or retracts in minor details jib 4, because of rotary stopper slide block 10 and rotary stopper platform 9 abutting contact, limit telescopic arm 3 and rotate when stretching motion, and be able to be transferred to service load minor details jib 4.Referring to Fig. 7, when telescopic arm 3 extend out to extreme limit of travel, stage portion 13 contacts with rotary stopper slide block 10, also can carry out spacing to the stroke that stretches out of telescopic arm 3.Therefore, position is set can the carrying out concrete calculating and design according to stroke planning of rotary stopper platform 9.
Additionally, also can arrange slip ring mounting groove on the flexible internal face holding chamber 5, arranging slip ring 14 in slip ring mounting groove, bore section is protruding through slip ring 14.Slip ring 14 adopts high-abrasive material to make through polish, and the setting of slip ring mounting groove reduces the contact area between telescopic arm 3 and minor details jib 4, and slip ring 14 reduces coefficient of friction, and frictional resistance is less, improves the telescopicing performance of telescopic arm 3.Wherein preferably employ common high-abrasive material, for instance slip ring 14 is copper ring or nylon ring.On this basis, the flexible internal face holding chamber 5 also can be provided with oils and fats accumulator tank 15, the outer wall of minor details jib 4 is communicated with the pouring orifice 16 of oils and fats accumulator tank 15, thus pouring orifice 16 can be passed through inject lubricant grease etc. in oils and fats accumulator tank 15.In the every time flexible stroke of telescopic arm 3, the lubricant grease in oils and fats accumulator tank 15 can scribble grease lubrication layer at the outer surface of telescopic arm 3, thus reduces frictional resistance further, it is ensured that telescopic arm 3 is capable of expansion and contraction, and then ensures the functional reliability of telescopic jib system.Specifically, as it is shown in fig. 7, can at least formed with the two of axially spaced-apart slip ring mounting groove on the flexible internal face holding chamber 5, oils and fats accumulator tank 15 may be provided between two slip ring mounting grooves.The lubricant grease of oils and fats accumulator tank 15 can pass through in the slip ring mounting groove of oil duct or entrance both sides, cylinder gap, to lubricate slip ring 14 therein.Can contrastively, in box structure telescopic jib system of the prior art, the naked leakage of lubricant environment slided between arm, lubricant environment is severe, and lubricant grease consumption is big, the easy stuck foreign matter of lubricant grease and be contaminated, lose effective lubrication.
On the basis of above telescopic jib system, present invention also offers a kind of concrete ejection chassis, referring to Fig. 1, this concrete ejection chassis includes car body, shower nozzle assembly 2 and above-mentioned telescopic jib system, this telescopic jib system is pivotably mounted on car body by first joint jib, and shower nozzle assembly 2 is arranged on telescopic arm 3.Wherein, owing to the telescopic jib system of concrete ejection chassis has been carried out above-mentioned improvement, telescopic jib system is suitable for various operating modes and the harsh environments of concrete ejection chassis, improve flexible reliability, durability and adaptability for working condition, thus being greatly improved the overall performance of concrete ejection chassis.
The preferred embodiment of the present invention is described in detail above in association with accompanying drawing; but; the present invention is not limited to the detail in above-mentioned embodiment; in the technology concept of the present invention; technical scheme can being carried out multiple simple variant, these simple variant belong to protection scope of the present invention.
It is further to note that, each concrete technical characteristic described in above-mentioned detailed description of the invention, in reconcilable situation, it is possible to be combined by any suitable mode, in order to avoid unnecessary repetition, various possible compound modes are no longer illustrated by the present invention separately.
Additionally, can also carry out combination in any between the various different embodiment of the present invention, as long as it is without prejudice to the thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
- null1. a telescopic jib system，Including the multistage jib that telescopic arm (3) and head and the tail are sequentially hinged，Described telescopic arm (3) is connected to the minor details jib (4) in described multistage jib，It is characterized in that，The flexible accommodation chamber (5) of cylindrical hole shape it is formed with in described minor details jib (4)，The end of described telescopic arm (3) is formed as columnar bore section，It is contained in described flexible accommodation chamber (5) this bore section Telescopic movable and outwards passes，Piston (7) and piston rod (8) it is provided with in the barrel chamber (6) of described bore section，Described barrel chamber (6) is divided into rod chamber and rodless cavity by described piston (7)，One end of described piston rod (8) connects described piston (7)，The other end stretches in described flexible accommodation chamber (5) and connects described minor details jib (4)，Described piston rod (8) is additionally provided with rodless cavity hydraulic fluid port (A) and the rod chamber hydraulic fluid port (B) of connection corresponding to described rodless cavity and rod chamber respectively.
- 2. telescopic jib system according to claim 1, it is characterized in that, the periphery wall of described bore section is formed rotary stopper platform (9), the end of described minor details jib (4) is provided with rotary stopper slide block (10), and this rotary stopper slide block (10) can be resisted against on described rotary stopper platform (9) to limit the rotation of described bore section.
- 3. telescopic jib system according to claim 2, it is characterized in that, piston end (11) that described bore section includes stretching in described flexible accommodation chamber (5) and from the outwardly directed external part of described flexible accommodation chamber (5) (12), described limiting platform (9) radially inwardly formed on the outer circle wall of described external part (12) and and described piston end (11) between be formed with the stage portion (13) for stretching spacing.
- 4. telescopic jib system according to claim 2, it is characterised in that the end of described minor details jib (4) is also equipped with surrounding the dust slinger of the periphery wall of described bore section.
- 5. telescopic jib system according to claim 1, it is characterized in that, the internal face of described flexible accommodation chamber (5) is provided with slip ring mounting groove, is provided with slip ring (14) in described slip ring mounting groove, and described bore section is protruding through described slip ring (14).
- 6. telescopic jib system according to claim 5, it is characterised in that described slip ring (14) is copper ring or nylon ring.
- 7. telescopic jib system according to claim 5, it is characterized in that, the internal face of described flexible accommodation chamber (5) is also formed with oils and fats accumulator tank (15), the outer wall of described minor details jib (4) is communicated with the pouring orifice (16) of described oils and fats accumulator tank (15).
- 8. telescopic jib system according to claim 7, it is characterized in that, at least formed with two described slip ring mounting grooves of axially spaced-apart on the internal face of described flexible accommodation chamber (5), described oils and fats accumulator tank (15) is arranged between two described slip ring mounting grooves.
- 9. telescopic jib system according to claim 1, it is characterised in that the circumferential clearance formed between outer circumference surface and the internal face of described flexible accommodation chamber (5) of described bore section is not more than 0.1mm.
- 10. a concrete ejection chassis, it is characterized in that, this concrete ejection chassis includes car body, shower nozzle assembly (2) and the telescopic jib system according to any one in the claims 1-9, this telescopic jib system is arranged on described car body, and described shower nozzle assembly (2) is arranged on described telescopic arm (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782472.7A CN105756686A (en) | 2014-12-16 | 2014-12-16 | Telescopic boom frame system and concrete spraying trolley |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410782472.7A CN105756686A (en) | 2014-12-16 | 2014-12-16 | Telescopic boom frame system and concrete spraying trolley |
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| CN105756686A true CN105756686A (en) | 2016-07-13 |
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| CN201410782472.7A Pending CN105756686A (en) | 2014-12-16 | 2014-12-16 | Telescopic boom frame system and concrete spraying trolley |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109667539A (en) * | 2018-12-29 | 2019-04-23 | 中国铁建重工集团有限公司 | A kind of boom device and the drill jumbo comprising it |
| CN110410015A (en) * | 2019-01-26 | 2019-11-05 | 江西蓝翔重工有限公司 | A kind of scaling platform with dustproof construction |
| CN110410094A (en) * | 2019-01-26 | 2019-11-05 | 江西蓝翔重工有限公司 | A kind of scaling platform being fitted on tunnel or tunnel piercing equipment |
| CN110424977A (en) * | 2019-01-26 | 2019-11-08 | 江西蓝翔重工有限公司 | A kind of multi-functional drill dress windlass with scaling platform structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109667539A (en) * | 2018-12-29 | 2019-04-23 | 中国铁建重工集团有限公司 | A kind of boom device and the drill jumbo comprising it |
| CN110410015A (en) * | 2019-01-26 | 2019-11-05 | 江西蓝翔重工有限公司 | A kind of scaling platform with dustproof construction |
| CN110410094A (en) * | 2019-01-26 | 2019-11-05 | 江西蓝翔重工有限公司 | A kind of scaling platform being fitted on tunnel or tunnel piercing equipment |
| CN110424977A (en) * | 2019-01-26 | 2019-11-08 | 江西蓝翔重工有限公司 | A kind of multi-functional drill dress windlass with scaling platform structure |
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Application publication date: 20160713 |