CN110039651A - A kind of pile for prestressed pipe mould automatic Tensioning system based on hydraulic cylinder - Google Patents
A kind of pile for prestressed pipe mould automatic Tensioning system based on hydraulic cylinder Download PDFInfo
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- CN110039651A CN110039651A CN201910301305.9A CN201910301305A CN110039651A CN 110039651 A CN110039651 A CN 110039651A CN 201910301305 A CN201910301305 A CN 201910301305A CN 110039651 A CN110039651 A CN 110039651A
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- nut
- jack
- hydraulic cylinder
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 21
- 239000012528 membrane Substances 0.000 claims abstract description 12
- 238000003032 molecular docking Methods 0.000 claims description 53
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 31
- 230000005540 biological transmission Effects 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 10
- 239000010959 steel Substances 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 5
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000000630 rising effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- 239000003921 oil Substances 0.000 description 8
- 238000012546 transfer Methods 0.000 description 4
- 230000001960 triggered effect Effects 0.000 description 4
- 241000239290 Araneae Species 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000003205 muscle Anatomy 0.000 description 3
- 239000011513 prestressed concrete Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 241000309551 Arthraxon hispidus Species 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
- B28B21/60—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts prestressed reinforcements
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The pile for prestressed pipe mould automatic Tensioning system based on hydraulic cylinder that the invention discloses a kind of, including tubular pole membrane module, tensioning equipment and three-dimensional mobile platform, caliber detection device, displacement sensor device, the tensioning equipment include butt-joint locking device and tight locking device, jack hydraulic cylinder and nut locking device.The three-dimensional mobile platform is by the mobile adjustment tensioning equipment on tri- directions X, Y, Z with tubular pole membrane module to the heart.It is docked by butt-joint locking device with tubular pole die plate tensioning screw rod, by fastening screw nut device and hydraulic cylinder and tight, pipe pile mould tensioning is realized by tensioning equipment and locking nut locking is realized by nut locking device, pipe pile mould caliber is detected by caliber detection device, the lifting value of three-dimensional mobile platform is detected by displacement sensor device.The present invention adapts to the tubular piles stretching of plurality of specifications, can fully achieve automation, liberates manual labor, substantially increases production efficiency.
Description
Technical field
The invention belongs to build tubular pole field, it is related to a kind of pretensioned prestressed concrete pipe pile mould automatic Tensioning system,
More particularly to a kind of pile for prestressed pipe mould automatic Tensioning system based on hydraulic cylinder.
Background technique
The advantages that prestressed concrete pipe pile is high, easy for construction using its bearing capacity of single pile is as house architectural structure and bridge
The basis of the civil engineerings such as structure is widely used in engineering.Each tubular pole outer diameter just has the tensioning of matching size
Plate, stretch board generally use the materials such as cast steel, forged steel to make, and disc centre is furnished with tensioning screw rod, and disc centre is according to tubular pole specification
Equipped with equal cloth hole, the circle diameter of Kong Zhongxin is the circle diameter at tubular pole main reinforcement center, can a plate it is multi-purpose, while meeting difference
The tubular piles stretching requirement of wall thickness.When tensioning, the outer sleeve of stretching-machine is withstood in the support plate outside pipe die, at stretching-machine center and work
The connected nut set of plug covers on tensioning screw rod, and when stretching-machine oil inlet, tensioning screw rod stretches outward, drives the master on tubular pole skeleton
Muscle stretches outward, to be tensioned to screw the locking nut on tensioning screw rod to when providing tensioning force value, makes stretching force lock in pipe die
On, then oil return, the nut set on stretching-machine is separated with screw rod, tensioning completion.
1, current pipe pile mould tensioning needs artificial jack for moving, and up and down adjustment, it is difficult to make in tension rod alignment pipe die
The heart, guarantees and tensioning head is to just buckling well into a horizontal line.
2, stretching force is excessive, and tubular pole is also easy to produce that antiarch is excessive or prestretching area cracking, and non-plastic fracture can be generated when serious.
3, stretching force is too small, and crack can occur too early in tubular pole, and anti-crack ability reduces, and degree of disturbing exceeds permissible value, is not achieved pre-
The design object of prestressed concrete.
4, there is the case where reinforcing bar fracture during tubular piles stretching, can hardly find, reinforcing bar fracture seriously affects tubular pole
Quality.
Existing pile for prestressed pipe mould automatic Tensioning system, including tensioning equipment, nut locking device, lifting platform, lifting
Platform horizontal displacement device, the connection locking device that tensioning equipment is docked with head plate tensioning screw rod, connection locking device include claw,
The hydraulic cylinder of pedestal, shaft and driving claw rotation, is docked when driving claw closure with tapered joint head matching, thus shape
At stable connection, above-mentioned connection locking device structure is complicated, and volume is larger, can not adapt to different size of pipe pile mould tensioning.
Nut locking device includes slide unit pedestal, nut check slide unit, motor mount, alternating current generator, belt wheel and transmission belt, tensioning
After the completion of device and pipe pile mould contraposition, transmission belt just puts on the locking nut of tubular pole membrane module, rises spiral shell by lifting device
Mother's locking slide unit, can be completed belt wheel and connects with locking nut power transmission, and structure is complicated for this nut locking device, transmission belt mill
Damage is serious, must often replace.Lifting platform includes column weldment, top plate, lifting plate and vertical movement driving device, this lifting platform
Center of gravity is higher and is pulled up by wirerope, is easy to shake, stability is poor.
Summary of the invention
The purpose of the present invention is to provide a kind of pile for prestressed pipe mould automatic Tensioning systems of high degree of automation, solve mesh
The problem of preceding artificial tensioning inefficiency, another object of the present invention are that providing one kind can adapt to more specification pile for prestressed pipe moulds
Automatic Tensioning system, to solve the problems, such as that stretching machine can only be directed to the pipe pile mould of specific standard in currently available technology, so that nothing
The tubular piles stretching that can adapt to various specifications automatically need to be manually adjusted.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that:
A kind of pile for prestressed pipe mould automatic Tensioning system based on hydraulic cylinder, including tensioning equipment, tubular pole membrane module and
Three-dimensional mobile platform, the tubular pole membrane module include pipe pile mould and the head plate tensioning screw rod being connected with reinforcing bar in pipe pile mould, spy
Sign is: the tensioning equipment is mounted in three-dimensional mobile platform, by three-dimensional mobile platform and pipe pile mould to the heart, the tensioning
Device includes tensioning bracket and the butt-joint locking device being mounted on tensioning bracket and tight locking device and jack hydraulic cylinder,
The tensioning bracket includes foreboard, back plate and the more support rods that the two is fixedly linked, and the jack hydraulic cylinder includes cylinder
Body, piston and piston rod and hollow jack pull rod, the jack pull rod are freely worn from the hollow via-hole in piston rod
It crosses through cylinder body rear and front end, the cylinder body of the jack hydraulic cylinder is fixedly mounted in the back plate of tensioning bracket, tensioning bracket
Front and rear panels in the middle part of be equipped with and stretch out the through-hole that docks with head plate tensioning screw rod for jack pull rod；
The butt-joint locking device is set to jack pull rod front end, for being docked with head plate tensioning screw rod, butt-joint locking dress
It sets including being threadedly engaged the docking for completing docking to connected nut rotation to connected nut and driving being connected with head plate tensioning screw rod
Driving device；Described and tight locking device is set to jack back end of tie rod, for by jack pull rod and jack hydraulic cylinder
Piston rod is simultaneously tight, and described and tight locking device includes being covered on the jack pull rod of jack hydraulic cylinder rear end by being threadedly engaged
Fastening screw nut and the rotation of driving fastening screw nut are to along the sliding of jack pull rod and tight driving device.
As an improvement, the tubular pole membrane module further includes head plate and locking nut, the head plate is fixedly mounted on pipe pile mould
On, it is equipped with the centre bore passed freely through for head plate tensioning screw rod among head plate, passes through between head plate tensioning screw rod and locking nut
It is threadedly engaged, the relative position of head plate tensioning screw rod and head plate can be locked by turning locking nut, the locking nut is logical
It crosses nut locking device and turns locking.
As an improvement, the tensioning equipment further includes the nut locking device for locking locking nut, the nut lock
Tight device is mounted on tensioning bracket front end comprising locking head, locking pedestal and locking motor, the locking pedestal pass through flexibility
Device is mounted on tensioning bracket front end, and the locking head is mounted on locking pedestal by bearing, is equipped in the middle part of locking head in lock
Sleeve is tightened in tight nut cooperation, and the locking motor turns locking nut for driving locking head to rotate, to realize, is completed
Locking action.
As an improvement, the flexible apparatus includes cylindrical guide, linear cylindrical sliding block and passive tensioning spring, the cylinder
Guide rail is parallel to be fixedly mounted on the support rod of tensioning bracket, and the linear cylindrical sliding block installation is on the cylindrical guide rail, described
Locking pedestal is mounted on linear cylindrical sliding block, and the passive tensioning spring is mounted in the foreboard of locking pedestal and tensioning bracket
Between side.
As an improvement, the docking driving device includes docking motor, docking bracket, docking guide rail and pull rod auxiliary hydraulic pressure
Cylinder, the docking guide rail are fixedly mounted on the rear end of tensioning bracket, and the docking bracket is mounted on docking guide rail by sliding block,
The docking bracket is connected by pull rod auxiliary hydraulic cylinder with tensioning bracket, and the docking motor is mounted on docking bracket, and
And jack pull rod can be made to tubular pole by pull rod auxiliary hydraulic cylinder pulling docking bracket with jack pull rod axis connection
Then mould movement completes docking by docking motor driven jack pull rod rotation.
As an improvement, described and tight locking device further include and compact schemes disk and and tight motor, the fastening screw nut pass through
Bearing is mounted on and on compact schemes disk, and described and tight motor is connected by gear drive with fastening screw nut power transmission.
As an improvement, described and tight locking device further includes fastening screw nut limit guide rod, the fastening screw nut limits guide rod
Be fixedly mounted on tensioning bracket, and it is parallel with jack pull rod install, the fastening screw nut is installed by slider guide structure
On fastening screw nut limit guide rod, guide rod is limited by fastening screw nut and makes fastening screw nut can only be along the axial direction of jack pull rod
Movement, so that the piston rod of jack pull rod and jack hydraulic cylinder and tight.
As an improvement, the three-dimensional mobile platform includes mobile base, base track and lift cart, the base track
It is fixed on ground, the mobile base is mounted on base track, and mobile base is equipped with vertical with base track direction
Mobile base sliding rail, the lift cart are mounted on the mobile base sliding rail of mobile base, and the tensioning equipment is mounted on liter
The lift side of car top drops.
As an improvement, the lift cart includes lift cart pedestal, arm support, lift cart top plate and raise-lower hydraulic
Cylinder, the lift cart base bottom are mounted on mobile base sliding rail by steel wheel, and the arm support side is distinguished up and down
It is hinged and connected with lift cart pedestal and lift cart top plate, is hingedly installed in the middle part of arm support by central support shaft, it is described
Lifting hydraulic cylinder one end is hingedly mounted on lift cart pedestal, and the other end is hingedly mounted in central support shaft.
As an improvement, the lift cart pedestal is equipped with the straight-line displacement for detecting lift cart top plate adjustable height
Sensor, the lift cart top plate are equipped with the buffer spring for installing tensioning equipment.
The beneficial effects of the present invention are the present invention adjusts tensioning equipment by three-dimensional mobile platform at X, Y, Z tri-
Movement on direction, thus realize the head plate tensioning screw rod axle center of pipe pile mould with to dock nut axle center concentric.The present invention by pair
It connects locking device and tight locking device, tensioning equipment realizes the tensioning of pipe pile mould, locking nut is realized by nut locking device
Locking, limits stroke by limit switch, detects pipe pile mould caliber by pipe pile mould detection device, passes through linear displacement transducer
The lifting value for detecting lift cart passes through the sensor module dynamically tensioning pressure in monitoring system in due course, after up to standard, control
Combination valve enters pressure maintaining, issues pressure release instruction by system after the completion of operation, and operating efficiency improves in coordination organization.Equipment detection system
Unite real-time detection jack oil hydraulic system, by oil pressure variation can accurately find tensioning break muscle the case where, improve product quality.
The present invention can realize the tensioning for aligning and lock and carry out tubular pole with the pipe pile mould of different size automatically, and high degree of automation produces
Quality is high, high production efficiency.
The present invention can detect automatically and adapt to different tube diameters pipe pile mould；Realize continuous production free of discontinuities；Cleverly structure is set
Meter, sensor detecting device and plc data processing guarantee contraposition and locking precision；The automatic contraposition for realizing tubular pole and locking are gone forward side by side
Row tensioning；Device detection system real-time detection jack oil hydraulic system can accurately find tensioning break muscle the case where；Pass through synthesis
System design control error, guarantee precision.
Detailed description of the invention
Fig. 1 is pile for prestressed pipe mould automatic Tensioning overall system architecture shaft side figure of the present invention.
Fig. 2 is pile for prestressed pipe mould automatic Tensioning overall system architecture side view of the present invention.
Fig. 3 is the docking nut structure diagram of butt-joint locking device.
Fig. 4 is tensioning equipment structural schematic diagram.
Fig. 5 is the side view of figure.
Fig. 6 is partial schematic diagram A in Fig. 5.
Fig. 7 is simultaneously tight locking device structure schematic diagram.
Fig. 8 is nut locking device in tensioning equipment installation installation relation schematic diagram.
Fig. 9 is nut locking device structural schematic diagram.
Figure 10 is caliber structure of the detecting device schematic diagram.
Figure 11 is jack hydraulic cylinder structural schematic diagram.
Figure 12 is three-dimensional mobile platform structural schematic diagram.
Figure 13 is the lift cart structural schematic diagram of three-dimensional mobile platform.
1- tubular pole membrane module, 101- pipe pile mould, 102- head plate, 103- locking nut, 104- head plate tensioning screw rod, 105- fortune
Defeated support, 2- tensioning equipment, 201- butt-joint locking device, 20101- dock spiral shell to connected nut, 20102- limit switch, 20103-
Female arresting lever, 20104- docking motor, 20105- docking bracket, 20106- docking guide rail, 20107- pull rod auxiliary hydraulic cylinder,
20108- fastening screw nut limit guide rod, the tail portion 20109- guide bar support, 20110- polished rod guide rail, 20111- polished rod guide rail bearing,
20112- slip ring, 20113- slip ring spider, 20114- displacement sensor, 20115- shaft coupling, 20116- travel switch, 20117-
Travel switch bracket, 202- and tight locking device, 20201- and tight motor, 20202- and compact schemes disk, 20203- transmission gear,
20204- turntable bearing, 20205- fastening screw nut, 20206- driven gear, 203- jack hydraulic cylinder, 20301- jack are drawn
Bar, 20302- piston rod, 20303- cylinder body, 204- nut locking device, 20401- turntable bearing, 20402- locking head,
20403- class circular cone teeth outline, 20404- transmission gear, the passive tensioning spring of 20405-, 20406- lock pedestal, 20407- lock
Switch for locking bracket, 20408- locking switch, 20409- locking switch block, 20410- cylindrical guide support, 20411- cylinder are led
Rail, 20412- linear cylindrical sliding block, 20413- locking motor, 20414- driven gear, 205- tensioning bracket, 2051- foreboard,
2052- back plate, 2053- support rod, 3- three-dimensional mobile platform, 301- console, 302- hydraulic station, 303- lift cart, 304-
Mobile base sliding rail, 305- mobile base, 306- base track, 30301- steel wheel, 30302- steel wheel support, 30303- lifting are small
Underbody seat, 30304- arm support, 30305- lifting hydraulic cylinder, 30306- central support shaft, 30307- lift cart top plate,
30308- buffer spring, 30309- bracket, 4- caliber detection device, 401- top pulleys, 402- displacement sensor feeler lever, 403-
Caliber detects sleeve, 404- displacement sensor, 405- sensor fixing card, 406- slide bar, 5- linear displacement transducer.
Specific embodiment
The present invention is illustrated with reference to the accompanying drawing
As shown in figure 1 to figure 13, a kind of pile for prestressed pipe mould automatic Tensioning system based on hydraulic cylinder, including pipe pile mould
Component 1, tensioning equipment 2 and three-dimensional mobile platform 3, caliber detection device 4 and linear displacement transducer 5；As shown in figure 3, described
Tubular pole membrane module includes the head plate tensioning screw rod that pipe pile mould 101, head plate 102, locking nut 103 are connected with reinforcing bar in pipe pile mould
104, the head plate 102 is fixedly mounted on pipe pile mould 101, is equipped among head plate 102 and is passed freely through for head plate tensioning screw rod 104
Centre bore, by being threadedly engaged between head plate tensioning screw rod 104 and locking nut 103, by turning locking nut 103
The relative position of head plate tensioning screw rod 104 and head plate 102 is locked, 104 end of head plate tensioning screw rod is equipped with the screw thread for docking
Head, when tensioning, pipe pile mould 101 is fixed temporarily by transfer of support 105.
As shown in Figure 1, Figure 2, shown in Figure 11 and Figure 12, the tensioning equipment 2 is mounted in three-dimensional mobile platform 3, the three-dimensional
Mobile platform 3 is by the mobile adjustment tensioning equipment 2 on tri- directions X, Y, Z with tubular pole membrane module 1 to the heart, the tensioning
Device 2 includes tensioning bracket 205 and the butt-joint locking device 201 being mounted on tensioning bracket 205 and tight locking device 202, thousand
Jin top hydraulic cylinder 203 and nut locking device 204, the tensioning bracket 205 include foreboard 2051, back plate 2052 and consolidate the two
Surely more connected support rods 2053, the jack hydraulic cylinder 203 include cylinder body 20303, piston and piston rod 20302 and in
Empty jack pull rod 20301, the jack pull rod 20301 are freely passed through from the hollow via-hole in piston rod 20302 and are passed through
20303 rear and front end of cylinder body is worn, as shown in figure 11, in the present embodiment, the piston rod 20302 of jack hydraulic cylinder 203 is from cylinder body
20303 left sides are unidirectional to be stretched out, and piston rod 20302 can be offseted with simultaneously tight locking device 202 to complete tensioning movement, jack pull rod
20301 pass through from 20302 inner hollow of piston rod, are pierced by the right side of cylinder body 20303, therefore jack pull rod under normal circumstances
20301 also need to be connected by sealing by axle sleeve and cylinder body 20303, so that jack pull rod 20301 is from 20303 both ends of cylinder body
Run through, can freely move forward and backward, can also rotate, it is in addition it can consider to select the piston rod 20302 of two-way stretching, i.e., living
Stopper rod 20302 is stretched out from 20303 both ends of cylinder body, 20302 inner hollow of piston rod at this time, it is only necessary to meet piston rod 20302 with
Being slidingly sealed between cylinder body 20303,20301 diameter of jack pull rod are slightly less than the hollow aperture of piston rod 20302, this
Sample jack pull rod 20301 can freely run through jack hydraulic cylinder 203, it is pointed out that the above is only more excellent implementations
Example, jack hydraulic cylinder 203 can also pass through other products in the prior art, it is only necessary to which meeting jack pull rod 20301 can be from
It being passed freely through inside piston rod 20302, in the embodiment of the present invention, the latter half of rear end of jack pull rod 20301 is equipped with screw thread,
Convenient for being connected with the cooperation of fastening screw nut 20205.
As shown in Figure 2 and Figure 4, the cylinder body 20303 of the jack hydraulic cylinder 203 is fixedly mounted on tensioning bracket 205
In back plate 2052, it is equipped in the middle part of the foreboard 2051 and back plate 2052 of tensioning bracket 205 for the stretching of jack pull rod 20301 and head
The through-hole that plate tensioning screw rod 104 docks；The butt-joint locking device 201 is set to 20301 front end of jack pull rod, is used for and head plate
Tensioning screw rod 104 dock, butt-joint locking device 201 include be threadedly engaged with head plate tensioning screw rod 104 be connected to connected nut
20101 rotate connected nut 20101 with driving to complete the docking driving device of docking；Described and tight locking device 202 is set to
20301 rear end of jack pull rod, for the piston rod 20302 of jack pull rod 20301 and jack hydraulic cylinder 203 is simultaneously tight,
Described and tight locking device 202 includes being covered on 203 rear end jack pull rod 20301 of jack hydraulic cylinder by being threadedly engaged
Fastening screw nut 20205 and driving fastening screw nut 20205 rotation to along jack pull rod 20301 slide and tightly driving fill
It sets.When tensioning, tensioning equipment 2 is adjusted by three-dimensional mobile platform 3, so that the foreboard 2051 of tensioning bracket 205 withstands on pipe pile mould
On, drive forward be threadedly engaged with head plate tensioning screw rod 104 of the rotation of jack pull rod 20301 to dock by docking driving device,
Then work of the fastening screw nut 20205 along jack pull rod 20301 to jack hydraulic cylinder 203 is driven by simultaneously tight driving device
Stopper rod 20302 is drawn close simultaneously tightly, is started jack hydraulic cylinder 203 later and is ejected piston rod 20302, piston rod 20302 passes through simultaneously tightly
Stretching force is passed to jack pull rod 20301 by nut 20205, to complete the tensioning movement of head plate tensioning screw rod 104, later
The locking of locking nut is completed by nut locking device 204, to complete the automatic Tensioning process of a pipe pile mould.
As shown in Figures 2 and 3, the butt-joint locking device 201 includes to connected nut 20101, to connected nut arresting lever
20103 and limit switch 20102, it is described that connected nut 20101 is passed through to connected nut arresting lever 20103 and jack hydraulic cylinder
The jack pull rod 20301 of 203 front ends is fixedly linked, and to limit switch 20102 is equipped in the middle part of connected nut 20101, passes through limit
Switch 20102 may determine that whether dock in place with head plate tensioning screw rod 104 to connected nut 20101.
As shown in figure 5 and figure 7, described and tight locking device 202 includes fastening screw nut 20205, transmission gear 20203, turns
Dish axle holds 20204 and compact schemes disk 20202, simultaneously tight motor 20201, and described and tight motor 20201 is fixedly mounted on and compact schemes
It is connected on disk 20202 and with transmission gear 20203, the fastening screw nut 20205 is mounted on and is tightly propped up by turntable bearing 20204
On support plate 20202, fastening screw nut 20205 is equipped with the driven gear 20206 engaged with transmission gear 20203, described and tight spiral shell
Female 20205 sets form threaded connection on jack pull rod 20301, and described and compact schemes disk 20202 is limited across fastening screw nut
Guide rod 20108 and fastening screw nut limit guide rod 20108 and are formed and be slidably connected so that by and the tight driving of motor 20201 and tight
When nut 20205 rotates, and compact schemes disk 20202 can be as fastening screw nut 20205 be together along jack pull rod 20301
Return is dynamic.
As shown in Fig. 2,3,4,5,6, the butt-joint locking device 201 further includes slip ring 20112, slip ring spider 20113, light
Rod guide 20110, polished rod guide rail bearing 20111, travel switch 20116, travel switch bracket 20117, docking motor 20104,
Shaft coupling 20115, docking bracket 20105, fastening screw nut limit guide rod 20108, tail portion guide bar support 20109, pull rod assist liquid
Cylinder pressure 20107 and displacement sensor 20114, the slip ring 20112 are fixedly mounted on jack pull rod by slip ring spider 20113
On 20301 and lower end passes through polished rod guide rail 20110, and cable and control for nut locking device 204 are used in slip ring 20112
Line passes through, and prevents cable winds, and the travel switch 20116 is fixedly mounted on tensioning bracket by travel switch bracket 20117
In 205 back plate 2052, for detecting to the limit travel between connected nut 20101 and back plate 2052, prevent pull rod from assisting liquid
20107 transition of cylinder pressure elongation, and cause to collide connected nut 20101 and back plate 2052, the jack pull rod 20301 runs through thousand
The cylinder body 20303 of jin top hydraulic cylinder 203 is connected with the docking motor 20104 on docking bracket 20105, jack hydraulic cylinder 203
The jack pull rod 20301 of tail end is connected by shaft coupling 20115 with docking motor 20104, and the docking motor 20104 is fixed
It is mounted on docking bracket 20105, the docking bracket 20105 passes through pull rod auxiliary hydraulic cylinder 20107 and 205 phase of tensioning bracket
Even, the docking motor 20104 being connected together against, docking bracket 20105 can be pulled by pull rod auxiliary hydraulic cylinder 20107
And jack pull rod 20301 draws close docking or separate unloading, the cylinder body of the jack hydraulic cylinder 203 to pipe pile mould
20303 are fixedly linked with the back plate 2052 of tensioning bracket 205, and the fastening screw nut limit guide rod 20108 passes through tail portion guide rod branch
Frame 20109 is fixedly mounted in the back plate 2052 of tensioning bracket 205, and institute's displacement sensors 20114 are fixedly mounted on jack
On the cylinder body 20303 of hydraulic cylinder 203, for detecting the tentioning stroke of jack hydraulic cylinder 203, i.e. piston rod tensioning overhang,
As one kind, more preferably embodiment can also be in fastening screw nut 20205 and jack hydraulic cylinder for real-time monitoring stretching force
Pressure sensor is set between 203 piston rod 20302, jack hydraulic cylinder 203 can be monitored in real time by pressure sensor
The pulling force being applied on fastening screw nut 20205, namely the stretching force being consequently exerted on jack pull rod 20301, the pressure sensing
Device both may be mounted at fastening screw nut 20205 or may be mounted at 20302 end of piston rod (being not drawn into figure).
As shown in Figure 8 and Figure 9, the nut locking device 204 includes locking head 20402, turntable bearing 20401, transmission
Gear 20404, locking pedestal 20406, locking motor 20413, cylindrical guide 20411, cylindrical guide support 20410, straight line circle
Column sliding block 20412, locking switch block 20409, locking switch 20408, locking switch bracket 20407 and passive tensioning spring
20405, the locking motor 20413 is fixedly mounted on locking pedestal 20406 and is connected with transmission gear 20404, the lock
Tight head 20402 is mounted on locking pedestal 20406 by turntable bearing 20401, is equipped with and locking in the middle part of the locking head 20402
The cooperation of nut 103 and it is perforative tighten sleeve, locking head 20402 is equipped with the driven gear engaged with transmission gear 20404
20414, the locking pedestal 20406 is connected by locking switch block 20409 with linear cylindrical sliding block 20412, the straight line
Cylinder sliding block 20412 slides on cylindrical guide 20411, and the cylindrical guide 20411 is fixed by cylindrical guide support 20410
On the support rod 2053 and foreboard 2051 of tensioning bracket 205, the locking switch 20408 passes through locking switch bracket 20407
It is fixedly mounted on cylindrical guide support 20410, for detecting the limit position between locking pedestal 20406 and locking nut 103
It sets, judges whether to connecting, when docking tensioning, be equipped with to the jack pull rod 20301 of connected nut 20101 from locking head
It passes through among 20402 and is docked with head plate tensioning screw rod 104, when the distance between locking head 20402 and locking nut 103 meet pole
When extreme position requires, locking switch 20408 detects signal, i.e. starting locking motor 20413, and locking head 20402 is driven to rotate
Locking nut 103 is locked, when the distance between locking head 20402 and locking nut 103 become larger or locking motor
20413 reach threshold value, as lock, and can cut off locking motor 20413, the passive tensioning spring 20405 and locking base
Seat 20406 is connected with tensioning bracket 205, has allowing property between locking pedestal 20406 and pipe pile mould in this way, prevents hard collision.
As shown in Fig. 1,12, the three-dimensional mobile platform 3 makes tensioning bracket 205 by the movement in tri- directions X, Y, Z
End face, i.e. foreboard 2051 are overlapped with 104 end face of head plate, are aligned to 20101 axle center of connected nut with 104 axle center of head plate tensioning screw rod,
The pull rod auxiliary hydraulic cylinder 20107 is shunk, and the docking motor 20104 of tail portion rotates, and 20301 spiral of jack pull rod is driven to move
Dynamic, until head plate tensioning screw rod 104 is triggered to the limit switch 20102 on connected nut 20101, docking motor 20104 stops
Rotation, pull rod auxiliary hydraulic cylinder 20107 stop shrinking, and butt-joint locking is completed at this time；Described and tight locking device 202 passes through simultaneously tight
It is forward that the driving of motor 20201 rotate fastening screw nut 20205 on jack pull rod 20301, until with jack hydraulic cylinder 203
End fits closely, i.e. the piston rod that detects fastening screw nut 20205 Yu jack hydraulic cylinder 203 of displacement sensor 20114
20302 fittings are locked at this time and tightly and are completed；The oil inlet into jack hydraulic cylinder 203 of hydraulic station 302 pushes piston backward
Mobile, the piston rod 20302 that piston passes through, which moves backward, squeezes fastening screw nut 20205, and the fastening screw nut 20205 is in piston rod
It drives entire jack pull rod 20301 to move backward under 20302 promotion, opens 20116 until slip ring 20112 touches stroke,
Oil is sent in the stopping of hydraulic station 302, and pressure sensor Real-time and Dynamic Detection controls the tensioning pressure in tensioning system, at the same time nut
Locking nut 103 is turned locking under the driving of locking motor 20413 by locking device 204, and tensioning movement is completed.
As a kind of preferred embodiment, as shown in figure 9, the 20402 inner cavity shape of locking head in the nut locking device 204
At six class circular cone teeth outlines 20403, the class circular cone teeth outline 20403 of the locking head 20402 and 103 outer surface of locking nut
It comes into contact with, until entire nut locking device 204 is pushed backwards, passive tensioning spring 20405 keeps tensioning state at this time,
Travel switch 20408 is triggered, and starting locking motor 20413 rotates, and then locking head 20402 is driven to be rotated up locking nut
103 are locked, and the present invention also may be implemented using the nutting sleeve that works in the prior art certainly, the class circular cone teeth outline
20403 phases just among the locking nut sideline near, then can pass through；As 20403 phase of fruit circular cone teeth outline connects
Contact the angle of hexagon, then entire nut locking device 204 is pushed backwards, and passive tensioning spring 20405 is in tensioning at this time
State, locking switch 20408 are triggered and (indicate the class circular cone tooth form phase of line of this stylish locking head not to just), locking motor
20413 drive locking head 20402 to rotate by transmission gear 20404, until finding suitable position.The locking head
20402 class circular cone teeth outline 20403 comes into contact with 103 outer surface of locking nut, until class circular cone teeth outline and locking screw
Female outer surface engages completely, and the locking head locks locking nut 103 under the drive of locking motor 20413.
As shown in Figure 12,13, the three-dimensional mobile platform 3 include mobile base 305, lift cart 303, console 301,
Hydraulic station 302, mobile base sliding rail 304, base track 306, base track 306 are fixedly mounted on the ground, mobile base 305
It is mounted on base track 306, mobile base sliding rail 304 is fixed in mobile base 305, and lift cart 303 is mounted on movement
In base slide 304, adjusted by movement of the mobile base 305 on base track 306 tensioning equipment 2 in X-axis away from
From being moved on mobile base sliding rail 304 by lift cart 303 and adjust distance of the tensioning equipment 2 in Y-axis, pass through liter
The lifting hydraulic cylinder 30305 on trolley 303 is dropped move up and down lift cart top plate 30307, is existed so as to adjust tensioning equipment 2
Distance on Z axis.
As shown in Fig. 2, Figure 12 and Figure 13, the lift cart 303 includes steel wheel 30301, steel wheel support 30302, lifting
Trolley base 30303, arm support 30304, central support shaft 30306, lifting hydraulic cylinder 30305, lift cart top plate 30307
With buffer spring 30308, the lift cart top plate 30307 is equipped with the buffer spring 30308 for installing tensioning equipment 2, institute
It states buffer spring 30308 to work as a buffer when tensioning equipment 2 carries out tensioning, prevents about 2 tensioning equipment from shaking, the lifting
30303 bottom of trolley base is mounted on mobile base sliding rail 304 by steel wheel 30301, on 30304 side of arm support
It is lower to be hinged and connected respectively with lift cart pedestal 30303 and lift cart top plate 30307, above and below 30304 other side of arm support
It is connected respectively by guide rail slide block structure with lift cart pedestal 30303 and lift cart top plate 30307, arm support 30304
Middle part is hingedly installed by central support shaft, and described lifting hydraulic cylinder one end is hingedly mounted on lift cart pedestal 30303, separately
One end is hingedly mounted in central support shaft.The steel wheel 30301 slides on mobile base sliding rail 304, adjusts tensioning equipment 2
In the distance of Y direction, the lifting hydraulic cylinder 30305 is flexible drive lift cart top plate 30307 to move up and down so as to adjust
Tensioning equipment 2 is equipped with linear displacement transducer 5, the straight-line displacement on the lift cart 303 in the movement of Z-direction
Sensor 5 is used to detect the adjustable height of tensioning equipment 2.As a kind of preferred embodiment, in the lift cart pedestal 30303
Portion offers perforative mounting groove up and down, and the lift cart pedestal 30303 at the mounting groove is equipped with downward bracket 30309,
30305 lower end of lifting hydraulic cylinder is hinged on bracket 30309, can greatly increase stretching for lifting hydraulic cylinder 30305 in this way
Indention journey, to improve the Liftable of lift cart top plate 30307.
It is to be noted that the movement on X and Y-direction can be to be pushed away manually for three-dimensional mobile platform 3, can also add
Motor driven, for example the rotation of motor driven steel wheel 30301 is added on lift cart pedestal 30303 to complete Y direction
Mobile, X-direction is also that similarly, the movement of Z-direction can also be adopted other than the mode of above-mentioned arm support 30304
The modes such as directly go up and down with hydraulic cylinder, the specific embodiment of three-dimensional mobile platform 3 is not to the implementation structure of technical solution of the present invention
At influence, the three-dimensional locomotive function of three-dimensional mobile platform 3 can also be completed using the combination of other translating devices in technology certainly,
Therefore the present invention repeats no more.
As shown in Fig. 2,10,105 side of transfer of support of the pipe pile mould is equipped with caliber detection device 4, the caliber
Detection device 4 include displacement sensor 404, caliber detection sleeve 403, sensor fixing card 405, displacement sensor feeler lever 402,
Top pulleys 401, the caliber detection sleeve 403 is interior to be equipped with telescopic slide bar 406, and the slide bar 406 is covered with caliber detection
Cylinder 403 between be equipped with spring, by spring make slide bar 406 keep stretching state, 406 top of slide bar be equipped with can on pipe pile mould
The top pulleys 401 of running wheel contact, institute's displacement sensors 404 are mounted on caliber by sensor fixing card 405 and detect sleeve
403 sides, displacement sensor feeler lever 402 are fixedly mounted on slide bar 406, and the caliber detection sleeve 403 is fixedly mounted vertically
In 105 side of transfer of support, when pipe pile mould is placed on transfer of support 105, pipe pile mould touches top pulleys 401 and compresses
Slide bar 406, it is straight that displacement sensor 404 detects that 406 decrement of slide bar cooperation self-position dimension data can calculate running wheel
Diameter and axle center height.
The course of work of the invention:
The three-dimensional mobile platform 3 makes end face and the head plate of tensioning bracket 205 by the movement in tri- directions X, Y, Z
102 end faces are overlapped, and are aligned to the axle center of connected nut 20101 with the axle center of head plate tensioning screw rod 104, the mobile base 305 exists
It is slided on base track 306, the distance of adjustment tensioning equipment 2 in the X-axis direction, the lift cart of the three-dimensional mobile platform 3
303 slide on mobile base sliding rail 304, and the distance of adjustment tensioning equipment 2 in the Y-axis direction, the lift cart 303 passes through
Lifting hydraulic cylinder 30305 stretches, and adjusts pull rod auxiliary of the tensioning equipment 2 in the distance of Z-direction, the tensioning equipment 2
Hydraulic cylinder 20107 is shunk, and docking motor 20104 rotates, and the rotation movement of jack pull rod 20301 is driven, until head plate tensioning screw rod
104 are triggered to the limit switch on connected nut 20101, and butt-joint locking is completed at this time；Described and tight locking device passes through simultaneously tight
Motor driven rotates fastening screw nut 20205 on jack pull rod 20301, until fastening screw nut 20205 and jack hydraulic
Cylinder 203, which is shown consideration for, to be closed, and is locked at this time and tightly and is completed；The hydraulic station by the control of console into jack hydraulic cylinder 203 into
Oil, push piston move backward, the fastening screw nut 20205 driven under the promotion of piston entire jack pull rod 20301 to
After move, send oil until slip ring touches the stopping of travel switch hydraulic station, the in due course dynamic detection of sensor module controls tensioning system
Tensioning pressure in system, locking nut is turned locking, tensioning movement under the drive of the motor by nut locking device at the same time
It completes.After the completion of tensioning movement, the reversion of docking motor 20104, the elongation of pull rod auxiliary hydraulic cylinder, to connected nut 20101 and head plate
Tensioning screw rod 104 is detached from, reciprocation cycle, repeats the above-mentioned course of work, and unremitting pipe pile mould contraposition may be implemented, connection, open
The movements such as drawing, locking.
In addition PLC controller can also be arranged in the embodiment of the present invention, by above-mentioned each sensor and motor and PLC controller
It is connected, the movement of above-mentioned each step is controlled by PLC controller, the present invention is adopted independent of certain specific control mode
Above-mentioned movement is completed with the control of routine techniques in the prior art.
Claims (10)
1. a kind of pile for prestressed pipe mould automatic Tensioning system based on hydraulic cylinder, including tensioning equipment, tubular pole membrane module and three
Mobile platform is tieed up, the tubular pole membrane module includes pipe pile mould and the head plate tensioning screw rod being connected with reinforcing bar in pipe pile mould, feature
Be: the tensioning equipment is mounted in three-dimensional mobile platform, by three-dimensional mobile platform and pipe pile mould to the heart, the tensioning dress
It sets including tensioning bracket and the butt-joint locking device being mounted on tensioning bracket and tight locking device and jack hydraulic cylinder, institute
Stating tensioning bracket includes foreboard, back plate and the more support rods that the two is fixedly linked, the jack hydraulic cylinder include cylinder body,
Piston and piston rod and hollow jack pull rod, the jack pull rod are freely passed through from the hollow via-hole in piston rod and are passed through
Cylinder body rear and front end is worn, the cylinder body of the jack hydraulic cylinder is fixedly mounted in the back plate of tensioning bracket, before tensioning bracket
It is equipped in the middle part of plate and back plate and stretches out the through-hole docked with head plate tensioning screw rod for jack pull rod；
The butt-joint locking device is set to jack pull rod front end, for being docked with head plate tensioning screw rod, butt-joint locking device packet
Include the docking driving for completing docking to connected nut rotation to connected nut and driving for being threadedly engaged and being connected with head plate tensioning screw rod
Device；Described and tight locking device is set to jack back end of tie rod, for by the piston of jack pull rod and jack hydraulic cylinder
Bar is simultaneously tight, and described and tight locking device includes covering on the jack pull rod of jack hydraulic cylinder rear end and tight by being threadedly engaged
Nut and the rotation of driving fastening screw nut are to along the sliding of jack pull rod and tight driving device.
2. pile for prestressed pipe mould automatic Tensioning system as described in claim 1, it is characterised in that: the tubular pole membrane module also wraps
Head plate and locking nut are included, the head plate is fixedly mounted on pipe pile mould, is equipped among head plate and is freely worn for head plate tensioning screw rod
The centre bore crossed can elongated insertion part by turning locking nut by being threadedly engaged between head plate tensioning screw rod and locking nut
The relative position of plate tensioning screw rod and head plate, the locking nut turn locking by nut locking device.
3. pile for prestressed pipe mould automatic Tensioning system as claimed in claim 2, it is characterised in that: the nut locking device peace
Mounted in tensioning bracket front end comprising locking head, locking pedestal and locking motor, the locking pedestal are installed by flexible apparatus
In tensioning bracket front end, the locking head is mounted on locking pedestal by bearing, is equipped in the middle part of locking head and is matched in locking nut
That closes tightens sleeve, and the locking motor turns locking nut for driving locking head to rotate, to realize, it is dynamic to complete locking
Make.
4. pile for prestressed pipe mould automatic Tensioning system as claimed in claim 3, it is characterised in that: the flexible apparatus includes circle
Column guide rail, linear cylindrical sliding block and passive tensioning spring, the parallel support for being fixedly mounted on tensioning bracket of the cylindrical guide
On bar, on the cylindrical guide rail, the locking pedestal is mounted on linear cylindrical sliding block, the quilt for the linear cylindrical sliding block installation
Dynamic tensioning spring is mounted between locking pedestal and the foreboard medial surface of tensioning bracket.
5. the pile for prestressed pipe mould automatic Tensioning system as described in Claims 1-4 any one, it is characterised in that: described right
Connecing driving device includes that docking motor, docking bracket, docking guide rail and pull rod auxiliary hydraulic cylinder, the docking guide rail are fixedly mounted
In the rear end of tensioning bracket, the docking bracket is mounted on docking guide rail by sliding block, and the docking bracket is auxiliary by pull rod
Help hydraulic cylinder to be connected with tensioning bracket, the docking motor be mounted on docking bracket on, and with jack pull rod axis connection, lead to
It crosses pull rod auxiliary hydraulic cylinder and pulls docking bracket, jack pull rod can be made to move to pipe pile mould, then pass through docking motor
The rotation of jack pull rod is driven to complete docking.
6. the pile for prestressed pipe mould automatic Tensioning system as described in Claims 1-4 any one, it is characterised in that: it is described simultaneously
Tight locking device further include and compact schemes disk and and tight motor, the fastening screw nut be mounted on simultaneously compact schemes disk by bearing,
Described and tight motor is connected by gear drive with fastening screw nut power transmission.
7. pile for prestressed pipe mould automatic Tensioning system as claimed in claim 6, it is characterised in that: described and tight locking device is also
Limit guide rod including fastening screw nut, fastening screw nut limit guide rod is fixedly mounted on tensioning bracket, and with jack pull rod
Parallel installation, the fastening screw nut are mounted on fastening screw nut by slider guide structure and limit on guide rod, limited by fastening screw nut
Position guide rod makes fastening screw nut can only be along the axial movement of jack pull rod, so that jack pull rod and jack hydraulic
The piston rod of cylinder is simultaneously tight.
8. the pile for prestressed pipe mould automatic Tensioning system as described in Claims 1-4 any one, it is characterised in that: described three
Tieing up mobile platform includes mobile base, base track and lift cart, and the base track is fixed on ground, the mobile bottom
Seat is mounted on base track, and mobile base is equipped with the mobile base sliding rail vertical with base track direction, and the lifting is small
Vehicle is mounted on the mobile base sliding rail of mobile base, and the tensioning equipment is mounted on the lift side at the top of lift cart.
9. pile for prestressed pipe mould automatic Tensioning system as claimed in claim 8, it is characterised in that: the lift cart includes rising
Trolley base, arm support, lift cart top plate and lifting hydraulic cylinder drop, and the lift cart base bottom is installed by steel wheel
On mobile base sliding rail, the arm support side up and down respectively with lift cart pedestal and the hinged phase of lift cart top plate
Even, it is hingedly installed in the middle part of arm support by central support shaft, described lifting hydraulic cylinder one end is hingedly mounted on lift cart bottom
On seat, the other end is hingedly mounted in central support shaft.
10. pile for prestressed pipe mould automatic Tensioning system as claimed in claim 9, it is characterised in that: the lift cart pedestal
It is equipped with the linear displacement transducer for detecting lift cart top plate adjustable height, the lift cart top plate is equipped with and is used for
The buffer spring of tensioning equipment is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910301305.9A CN110039651B (en) | 2019-04-15 | 2019-04-15 | Automatic tensioning system of prestressing force tubular pile mould based on hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910301305.9A CN110039651B (en) | 2019-04-15 | 2019-04-15 | Automatic tensioning system of prestressing force tubular pile mould based on hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110039651A true CN110039651A (en) | 2019-07-23 |
| CN110039651B CN110039651B (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910301305.9A Expired - Fee Related CN110039651B (en) | 2019-04-15 | 2019-04-15 | Automatic tensioning system of prestressing force tubular pile mould based on hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110039651B (en) |
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| CN111764381A (en) * | 2020-05-30 | 2020-10-13 | 徐东新 | Steel construction of prestressing force high strength concrete pipe pile body |
| CN112682006A (en) * | 2020-12-30 | 2021-04-20 | 陆国平 | Intelligent mud anti-splash valve for petroleum drilling |
| CN114193946A (en) * | 2020-09-18 | 2022-03-18 | 东友科技股份有限公司 | Height adjusting device and printing platform applicable to same |
| CN117184850A (en) * | 2023-11-07 | 2023-12-08 | 广东盈坚实业集团有限公司 | Feeder for concrete production |
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| CN114193946A (en) * | 2020-09-18 | 2022-03-18 | 东友科技股份有限公司 | Height adjusting device and printing platform applicable to same |
| CN114193946B (en) * | 2020-09-18 | 2023-10-03 | 东友科技股份有限公司 | Height adjusting device and printing platform suitable for same |
| CN112682006A (en) * | 2020-12-30 | 2021-04-20 | 陆国平 | Intelligent mud anti-splash valve for petroleum drilling |
| CN112682006B (en) * | 2020-12-30 | 2022-07-08 | 牡丹江鑫北方石油钻具有限责任公司 | Intelligent mud anti-splash valve for petroleum drilling |
| CN117184850A (en) * | 2023-11-07 | 2023-12-08 | 广东盈坚实业集团有限公司 | Feeder for concrete production |
| CN117184850B (en) * | 2023-11-07 | 2024-01-16 | 广东盈坚实业集团有限公司 | Feeder for concrete production |
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|---|---|
| CN110039651B (en) | 2020-07-24 |
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