CN110039651B - Automatic tensioning system of prestressing force tubular pile mould based on hydraulic cylinder - Google Patents
Automatic tensioning system of prestressing force tubular pile mould based on hydraulic cylinder Download PDFInfo
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- CN110039651B CN110039651B CN201910301305.9A CN201910301305A CN110039651B CN 110039651 B CN110039651 B CN 110039651B CN 201910301305 A CN201910301305 A CN 201910301305A CN 110039651 B CN110039651 B CN 110039651B
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- 239000010959 steel Substances 0.000 claims description 12
- 230000009471 action Effects 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 19
- 239000010720 hydraulic oil Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000003032 molecular docking Methods 0.000 description 17
- 230000006872 improvement Effects 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000003028 elevating effect Effects 0.000 description 3
- 239000011513 prestressed concrete Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 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 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
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- 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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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a prestressed pipe pile mould automatic tensioning system based on a hydraulic oil cylinder, which comprises a pipe pile mould assembly, a tensioning device, a three-dimensional moving platform, a pipe diameter detection device and a displacement sensor device, wherein the tensioning device comprises a butt joint locking device, a parallel locking device, a jack hydraulic cylinder and a nut locking device. The three-dimensional moving platform adjusts the centering of the tensioning device and the pipe pile die assembly through the movement in X, Y, Z three directions. The pipe pile mould is in butt joint with a pipe pile mould head plate tensioning screw rod through a butt joint locking device, is tightly combined with a hydraulic cylinder body through a nut tightening device, achieves pipe pile mould tensioning through the tensioning device, achieves locking nut locking through the nut locking device, detects the pipe diameter of the pipe pile mould through a pipe diameter detection device, and detects the lifting value of a three-dimensional moving platform through a displacement sensor device. The invention can adapt to the tensioning of tubular piles with various specifications, can completely realize automation, liberates manual labor and greatly improves the production efficiency.
Description
Technical Field
The invention belongs to the field of building tubular piles, relates to an automatic tensioning system for a pre-tensioning method prestressed concrete tubular pile mould, and particularly relates to an automatic tensioning system for a prestressed tubular pile mould based on a hydraulic oil cylinder.
Background
The prestressed concrete pipe pile has the advantages of high single pile bearing capacity, convenient construction and the like, and is widely applied to engineering as the foundation of civil engineering such as building structures, bridge structures and the like. The outer diameter of each tubular pile is provided with a tension plate with a matched size, the tension plate is generally made of cast steel, forged steel and the like, the center of the disc is provided with a tension screw, the center of the disc is provided with uniformly distributed holes according to the specification of the tubular pile, the circumferential diameter of the center of each hole is the circumferential diameter of the center of a main rib of the tubular pile, and the tension plate can be used for multiple purposes and simultaneously meets the requirements of tubular piles with different wall thicknesses. During stretching, an outer sleeve of the stretching machine is supported on a supporting plate outside a pipe die, a nut sleeve connected with a piston at the center of the stretching machine is sleeved on a stretching screw rod, when the stretching machine is fed with oil, the stretching screw rod stretches outwards to drive a main rib on a pipe pile framework to stretch outwards, when the stretching machine is stretched to a specified stretching force value, a locking nut on the stretching screw rod is screwed to lock the stretching force on the pipe die, then oil is returned, the nut sleeve on the stretching machine is separated from the screw rod, and stretching is completed.
1. At present, the jack needs to be manually moved for tensioning the tubular pile die and is adjusted up and down, so that the tensioning rod is difficult to align to the center of the tubular pile die, and the tensioning rod is ensured to be aligned and fastened with the tensioning head to form a horizontal line.
2. The tubular pile is easy to generate excessive reverse arching or pre-tensioning area cracking due to overlarge tension force, and brittle fracture can be generated in serious conditions.
3. The tension force is too small, the pipe pile can generate cracks too early, the anti-cracking capability is reduced, the disturbance degree exceeds an allowable value, and the design target of the prestressed concrete can not be achieved.
4. The condition of steel bar fracture appears in the tubular pile tensioning process, and the steel bar fracture can hardly be found, so that the quality of the tubular pile is seriously influenced.
The existing automatic tensioning system for the prestressed pipe pile mould comprises a tensioning device, a nut locking device, a lifting platform and a lifting platform horizontal displacement device, wherein the tensioning device is connected with a connection locking device in butt joint with a head plate tensioning screw rod, the connection locking device comprises a clamping jaw, a base, a rotating shaft and a hydraulic cylinder for driving the clamping jaw to rotate, and the connection locking device is matched and butted with a conical connector when the driving clamping jaw is closed, so that stable connection is formed. Nut locking device includes slip table base, nut locking slip table, motor mount pad, AC motor, band pulley and drive belt, and after tensioning equipment and tubular pile mould counterpoint accomplished, the drive belt just sheathes tubular pile mould subassembly's lock nut, rises nut locking slip table through elevating gear, can accomplish band pulley and lock nut power transmission and connect, and this nut locking device structure is complicated, and drive belt wearing and tearing are serious, must often change. The elevating platform includes stand welding spare, roof, lift plate and vertical motion drive arrangement, and this elevating platform focus is higher and through wire rope pull-up, rocks easily, and stability is relatively poor.
Disclosure of Invention
The invention aims to provide an automatic tensioning system of a prestressed pipe pile mould with high automation degree, which solves the problem of low manual tensioning efficiency at present, and the invention also aims to provide an automatic tensioning system of a prestressed pipe pile mould which can adapt to multiple specifications, so as to solve the problem that a tensioning machine in the prior art can only aim at a pipe pile mould with a specific specification at present, and ensure that the automatic tensioning system can automatically adapt to pipe pile tensioning with various specifications without manual adjustment.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides an automatic stretch-draw system of prestressing force tubular pile mould based on hydraulic cylinder, includes tensioning equipment, tubular pile mould subassembly and three-dimensional moving platform, tubular pile mould subassembly includes tubular pile mould and the first board stretch-draw screw rod that links to each other with tubular pile mould intramode reinforcing bar, its characterized in that: the tensioning device is installed on the three-dimensional moving platform and is aligned with the tubular pile die through the three-dimensional moving platform, the tensioning device comprises a tensioning support, a butt-joint locking device installed on the tensioning support, a locking device and a jack hydraulic cylinder, the tensioning support comprises a front plate, a rear plate and a plurality of support rods fixedly connecting the front plate and the rear plate, the jack hydraulic cylinder comprises a cylinder body, a piston rod and a hollow jack pull rod, the jack pull rod freely penetrates through the front end and the rear end of the cylinder body from a hollow through hole in the piston rod, the cylinder body of the jack hydraulic cylinder is fixedly installed on the rear plate of the tensioning support, and through holes for the jack pull rod to extend out to be in butt joint with the tensioning screw rods are formed in the middle parts of the front plate and the rear plate;
the butt joint locking device is arranged at the front end of the jack pull rod and is used for butt joint with the head plate tensioning screw rod, and the butt joint locking device comprises a butt joint nut in threaded fit connection with the head plate tensioning screw rod and a butt joint driving device for driving the butt joint nut to rotate so as to complete butt joint; the parallel locking device is arranged at the rear end of the jack pull rod and used for parallel locking the jack pull rod and a piston rod of a jack hydraulic cylinder, and the parallel locking device comprises a parallel nut which is sleeved on the jack pull rod at the rear end of the jack hydraulic cylinder through threaded fit and a parallel driving device which drives the parallel nut to rotate so as to slide along the jack pull rod.
As the improvement, tubular pile mould subassembly still includes first board and lock nut, first board fixed mounting is on the tubular pile mould, is equipped with the centre bore that supplies first board stretch-draw screw to pass freely in the middle of the first board, through screw-thread fit between first board stretch-draw screw and the lock nut, can lock the relative position of first board stretch-draw screw and first board through twisting lock nut, lock nut twists the locking through nut locking device.
As an improvement, tensioning equipment is still including the nut locking device who is used for locking lock nut, nut locking device installs at stretch-draw support front end, and it includes locking head, locking base and locking motor, the locking base passes through the flexible installation and installs at stretch-draw support front end, the locking head passes through the bearing and installs on the locking base, and the locking head middle part is equipped with in lock nut complex sleeve of screwing up, the locking motor is used for driving the locking head rotatory to realize twisting lock nut, accomplish the locking action.
As an improvement, the flexible device includes cylinder guide, sharp cylinder slider and passive tensioning spring, the parallel fixed mounting of cylinder guide is on the bracing piece of stretch-draw support, sharp cylinder slider installs on cylinder guide, the locking pedestal mounting is on sharp cylinder slider, passive tensioning spring installs between the front bezel medial surface of locking pedestal and stretch-draw support.
As the improvement, butt joint drive arrangement is including butt joint motor, butt joint support, butt joint guide rail and pull rod hydraulic assist cylinder, butt joint guide rail fixed mounting is in stretch-draw support's rear end, the butt joint support passes through the slider and installs on the butt joint guide rail, the butt joint support passes through pull rod hydraulic assist cylinder and links to each other with stretch-draw support, the butt joint motor is installed on the butt joint support to with jack pull rod hub connection, through pull rod hydraulic assist cylinder pulling butt joint support, can be so that the jack pull rod moves to the tubular pile mould, then accomplish the butt joint through the rotation of butt joint motor drive jack pull rod.
As an improvement, the tightening locking device further comprises a tightening supporting plate and a tightening motor, the tightening nut is mounted on the tightening supporting plate through a bearing, and the tightening motor is connected with the tightening nut in a power transmission mode through a gear transmission mode.
As an improvement, and tight locking device still includes the spacing guide arm of lock nut, the spacing guide arm fixed mounting of lock nut just with jack pull rod parallel mount on the stretch-draw support, lock nut passes through slider guide structure and installs on the spacing guide arm of lock nut, makes lock nut can only be along the axial motion of jack pull rod through the spacing guide arm of lock nut to make the jack pull rod and the piston rod of jack pneumatic cylinder tight.
As an improvement, the three-dimensional moving platform comprises a moving base, a ground sliding rail and a lifting trolley, the ground sliding rail is fixed on the ground, the moving base is installed on the ground sliding rail, the moving base is provided with a moving base sliding rail perpendicular to the ground sliding rail, the lifting trolley is installed on the moving base sliding rail of the moving base, and the tensioning device is installed at the lifting end of the top of the lifting trolley.
As an improvement, the lifting trolley comprises a lifting trolley base, a cross support, a lifting trolley top plate and a lifting hydraulic cylinder, wherein the bottom of the lifting trolley base is installed on a sliding rail of the movable base through steel wheels, the cross support is connected with the lifting trolley base and the lifting trolley top plate in an up-and-down hinged mode on one side respectively, the middle of the cross support is installed in a hinged mode through a central supporting shaft, one end of the lifting hydraulic cylinder is installed on the lifting trolley base in a hinged mode, and the other end of the lifting hydraulic cylinder is installed on the central.
As an improvement, a linear displacement sensor for detecting the lifting height of the lifting trolley top plate is arranged on the lifting trolley base, and a buffer spring for installing a tensioning device is arranged on the lifting trolley top plate.
The pipe pile mould tensioning device has the beneficial effects that the movement of the tensioning device in X, Y, Z three directions is adjusted through the three-dimensional moving platform, so that the axle center of a head plate tensioning screw rod of the pipe pile mould is concentric with the axle center of a butt nut. According to the invention, the pipe pile mould is tensioned through the butt-joint locking device, the locking device and the tensioning device, the locking nut is locked through the nut locking device, the stroke is limited through the limit switch, the pipe diameter of the pipe pile mould is detected through the pipe pile mould detection device, the lifting value of the lifting trolley is detected through the linear displacement sensor, the tensioning pressure in the system is timely and dynamically monitored through the sensor assembly, after the pipe pile mould reaches the standard, the combined valve is controlled to enter pressure maintaining, the system sends a pressure relief instruction after the operation is finished, the mechanism is coordinated, and the operation efficiency is improved. The equipment detection system detects the jack oil pressure system in real time, and can accurately find the condition of stretching broken ribs through oil pressure change, so that the product quality is improved. The invention can automatically realize the alignment and locking with tubular pile moulds of different specifications and stretch the tubular pile, and has high automation degree, high product quality and high production efficiency.
The invention can automatically detect and adapt to pipe pile moulds with different pipe diameters, realize continuous uninterrupted production, ensure the alignment and locking precision by ingenious structural design, sensor detection device and P L C data processing, automatically realize the alignment, locking and tensioning of the pipe piles, accurately find the condition of tensioning broken ribs by a jack oil pressure system by an equipment detection system in real time, control errors by comprehensive system design and ensure the precision.
Drawings
Fig. 1 is an axial view of the overall structure of the automatic tensioning system of the prestressed pipe pile mould.
Fig. 2 is a side view of the whole structure of the automatic tensioning system of the prestressed pipe pile mould.
Fig. 3 is a schematic structural view of a butt nut of the butt locking device.
Fig. 4 is a schematic structural view of the tensioning device.
Fig. 5 is a side view of the drawing.
Fig. 6 is a partial schematic view a of fig. 5.
Fig. 7 is a schematic structural view of the parallel locking device.
Fig. 8 is a schematic view of the installation relationship of the nut locking device on the tensioning device.
Fig. 9 is a schematic view of the nut lock device.
Fig. 10 is a schematic structural view of a pipe diameter detection device.
Fig. 11 is a schematic structural diagram of a hydraulic cylinder of the jack.
Fig. 12 is a schematic structural diagram of a three-dimensional mobile platform.
Fig. 13 is a schematic structural view of a lifting trolley of the three-dimensional moving platform.
1-pipe pile die assembly, 101-pipe pile die, 102-head plate, 103-locking nut, 104-head plate tensioning screw, 105-transportation support, 2-tensioning device, 201-butt-joint locking device, 20101-butt-joint nut, 20102-limit switch, 20103-butt-joint nut stop rod, 20104-butt-joint motor, 20105-butt-joint support, 20106-butt-joint guide rail, 20107-pull rod auxiliary hydraulic cylinder, 20108-parallel-tightening nut limit guide rod, 20109-tail guide rod support, 20110-polished rod guide rail, 20111-polished rod guide rail support, 20112-slip ring, 20113-slip ring support, 20114-displacement sensor, 20115-coupler, 20116-stroke switch, 20117-stroke switch support, 202-parallel-tightening locking device and 20201-parallel-tightening motor, 20202-clamping support plate, 20203-drive gear, 20204-turntable bearing, 20205-clamping nut, 20206-driven gear, 203-jack hydraulic cylinder, 20301-jack rod, 20302-piston rod, 20303-cylinder body, 204-nut locking device, 20401-turntable bearing, 20402-locking head, 20403-like conical tooth profile, 20404-drive gear, 20405-passive tension spring, 20406-locking base, 20407-locking switch bracket, 20408-locking switch, 09-locking switch stopper, 20410-cylindrical guide rail support, 20411-cylindrical guide rail, 20412-linear cylindrical slider, 20413-locking motor, 20414-driven gear, 205-tension bracket, 2051-front plate, 2052-rear plate, 2053-support rod, 3-a three-dimensional moving platform, 301-a control console, 302-a hydraulic station, 303-a lifting trolley, 304-a moving base slide rail, 305-a moving base, 306-a ground slide rail, 30301-a steel wheel, 30302-a steel wheel support, 30303-a lifting trolley base, 30304-a cross support, 30305-a lifting hydraulic cylinder, 30306-a central support shaft, 30307-a lifting trolley top plate, 30308-a buffer spring, 30309-a support, 4-a pipe diameter detection device, 401-a top pulley, 402-a displacement sensor contact rod, 403-a pipe diameter detection sleeve, 404-a displacement sensor, 405-a sensor fixing clamp, 406-a slide rod and 5-a linear displacement sensor.
Detailed Description
The invention is illustrated by the following description in conjunction with the drawings
As shown in fig. 1 to 13, an automatic tensioning system for a prestressed pipe pile mould based on a hydraulic oil cylinder comprises a pipe pile mould assembly 1, a tensioning device 2, a three-dimensional moving platform 3, a pipe diameter detection device 4 and a linear displacement sensor 5; as shown in fig. 3, the pipe pile die assembly includes a pipe pile die 101, a head plate 102, a locking nut 103 and a head plate tension screw 104 connected with a reinforcement bar in the pipe pile die, the head plate 102 is fixedly installed on the pipe pile die 101, a central hole for the head plate tension screw 104 to freely pass through is arranged in the middle of the head plate 102, the head plate tension screw 104 and the locking nut 103 are in threaded fit, the locking nut 103 is screwed to lock the relative position of the head plate tension screw 104 and the head plate 102, a threaded head for butt joint is arranged at the end of the head plate tension screw 104, and during tensioning, the pipe pile die 101 is temporarily fixed through a transportation support 105.
As shown in fig. 1, 2, 11 and 12, the tensioning device 2 is installed on a three-dimensional moving platform 3, the three-dimensional moving platform 3 adjusts the centering of the tensioning device 2 and the tube pile mould assembly 1 through movement in X, Y, Z three directions, the tensioning device 2 comprises a tensioning bracket 205, a butt locking device 201 installed on the tensioning bracket 205, a tightening locking device 202, a jack hydraulic cylinder 203 and a nut locking device 204, the tensioning bracket 205 comprises a front plate 2051, a rear plate 2052 and a plurality of support rods 2053 fixedly connecting the two, the jack hydraulic cylinder 203 comprises a cylinder 20303, a piston and a piston rod 20302 and a hollow jack pull rod 20301, the jack pull rod 20301 freely passes through the hollow through hole in the piston rod 20302 from the front end and the rear end of the cylinder 20303, as shown in fig. 11, in this embodiment, the piston rod 20302 of the jack hydraulic cylinder 203 unidirectionally extends from the left side of the cylinder 20303, the piston rod 20302 can abut against the parallel locking device 202 to complete the tensioning action, the jack rod 20301 penetrates through the hollow inside of the piston rod 20302 and penetrates out of the right side of the cylinder 20303, therefore, in general, the jack rod 20301 needs to be connected with the cylinder 20303 through a shaft sleeve in a sealing manner, so that the jack rod 20301 penetrates through the two ends of the cylinder 20303, can move back and forth freely and can rotate, in addition, the piston rod 20302 extending in two directions can be considered, namely, the piston rod 20302 extends out of the two ends of the cylinder 20303, the inside of the piston rod 20302 is hollow at the moment, only the sliding seal between the piston rod 20302 and the cylinder 20303 needs to be satisfied, the diameter of the jack rod 20301 is slightly smaller than the hollow aperture of the piston rod 20302, so that the jack rod 20301 can freely penetrate through the jack hydraulic cylinder 203, it should be pointed out that the above is only a preferred embodiment, and the jack hydraulic cylinder 203 can pass through, in the embodiment of the present invention, the rear end of the rear half of the jack rod 20301 is provided with a thread, which is convenient for being connected with the clamping nut 20205 in a matching manner.
As shown in fig. 2 and 4, the cylinder 20303 of the jack hydraulic cylinder 203 is fixedly mounted on the rear plate 2052 of the tensioning bracket 205, and through holes for the jack pull rod 20301 to extend out and butt with the head plate tensioning screw 104 are formed in the middle of the front plate 2051 and the rear plate 2052 of the tensioning bracket 205; the butt joint locking device 201 is arranged at the front end of the jack pull rod 20301 and is used for butt joint with the head plate tensioning screw 104, and the butt joint locking device 201 comprises a butt joint nut 20101 in threaded fit connection with the head plate tensioning screw 104 and a butt joint driving device for driving the butt joint nut 20101 to rotate so as to complete butt joint; the tightening and locking device 202 is arranged at the rear end of the jack rod 20301 and is used for tightening the jack rod 20301 with the piston rod 20302 of the jack cylinder 203, and the tightening and locking device 202 comprises a tightening nut 20205 which is sleeved on the jack rod 20301 at the rear end of the jack cylinder 203 through threaded fit and a tightening driving device which drives the tightening nut 20205 to rotate so as to slide along the jack rod 20301. During tensioning, the tensioning device 2 is adjusted through the three-dimensional moving platform 3, so that the front plate 2051 of the tensioning bracket 205 is abutted against a tubular pile mould, the jack pull rod 20301 is driven by the abutting driving device to rotate and advance to be in threaded fit abutting joint with the head plate tensioning screw 104, then the tightening nut 20205 is driven by the tightening driving device to approach and tighten the piston rod 20302 of the jack hydraulic cylinder 203 along the jack pull rod 20301, then the jack hydraulic cylinder 203 is started to eject the piston rod 20302, the piston rod 20302 transmits the tensioning force to the jack pull rod 20301 through the tightening nut 20205, so that the tensioning action of the head plate tensioning screw 104 is completed, and then the locking nut is locked through the nut locking device 204, so that the automatic tensioning process of the tubular pile mould is completed.
As shown in fig. 2 and 3, the docking locking device 201 includes a docking nut 20101, a docking nut stop bar 20103 and a limit switch 20102, the docking nut 20101 is fixedly connected with a jack pull rod 20301 at the front end of the jack hydraulic cylinder 203 through the docking nut stop bar 20103, the limit switch 20102 is installed in the middle of the docking nut 20101, and whether the docking nut 20101 is docked with the head plate tension screw 104 in place or not can be judged through the limit switch 20102.
As shown in fig. 5 and 7, the tightening and locking device 202 includes a tightening nut 20205, a transmission gear 20203, a turntable bearing 20204, a tightening and supporting plate 20202, and a tightening and locking motor 20201, the tightening and locking motor 20201 is fixedly mounted on the tightening and supporting plate 20202 and connected to the transmission gear 20203, the tightening and locking nut 20205 is mounted on the tightening and supporting plate 20202 through the turntable bearing 20204, the tightening and locking nut 20205 is provided with a driven gear 20206 engaged with the transmission gear 20203, the tightening and locking nut 20205 is screwed on the jack rod 20301, and the tightening and supporting plate 20202 passes through the tightening and locking nut limit guide 20108 and forms a sliding connection with the tightening and locking nut limit guide 20108, so that when the tightening and locking nut 20205 is driven by the tightening and locking motor 20201 to rotate, the tightening and supporting plate 20202 can move back and forth along the jack rod 20301 together with the tightening and locking nut 20205.
As shown in fig. 2, 3, 4, 5, and 6, the docking locking device 201 further includes a slip ring 20112, a slip ring holder 20113, a polished rod guide rail 20110, a polished rod guide rail support 20111, a travel switch 20116, a travel switch holder 20117, a docking motor 20104, a coupler 20115, a docking holder 20105, a fastening nut limit guide 20108, a tail guide rod holder 20109, a pull rod auxiliary hydraulic cylinder 20107, and a displacement sensor 20114, the slip ring 20112 is fixedly mounted on the jack pull rod 20301 through the slip ring holder 20113, and the lower end of the slip ring passes through the polished rod guide rail 20110, a cable and a control wire of the nut locking device 204 are passed through the slip ring 20112 to prevent the cable from being wound, the travel switch 20116 is fixedly mounted on the rear plate 2052 of the tensioning holder 205 through the travel switch holder 20117 to detect a limit travel between the docking nut 20101 and the rear plate 2052, prevent the pull rod auxiliary hydraulic cylinder 20107 from being excessively extended, and cause the docking nut 20101 and the, the jack pull rod 20301 penetrates through a cylinder body 20303 of the jack hydraulic cylinder 203 to be connected with a butt joint motor 20104 on a butt joint support 20105, the jack pull rod 20301 at the tail end of the jack hydraulic cylinder 203 is connected with the butt joint motor 20104 through a coupler 20115, the butt joint motor 20104 is fixedly installed on the butt joint support 20105, the butt joint support 20105 is connected with the tensioning support 205 through a pull rod auxiliary hydraulic cylinder 20107, the butt joint motor 20104, the butt joint support 20105 and the jack pull rod 20301 which are oppositely connected together can be pulled to approach a tubular pile mould to be in butt joint or be far away from and unloaded through the pull rod auxiliary hydraulic cylinder 20107, the cylinder body 20303 of the jack hydraulic cylinder 203 is fixedly connected with a back plate 2052 of the tensioning support 205, a nut closing limit guide rod 20108 is fixedly installed on the back plate 2052 of the tensioning support 205 through a tail guide rod support 20109, and a displacement sensor 20114 is fixedly installed on the, as a more preferable embodiment, in order to monitor the tensioning force in real time, a pressure sensor may be disposed between the clamping nut 20205 and the piston rod 20302 of the jack cylinder 203, and the tension applied to the clamping nut 20205 by the jack cylinder 203, that is, the tensioning force applied to the jack rod 20301, may be monitored in real time by the pressure sensor, and the pressure sensor may be mounted at the end of the clamping nut 20205 or the end of the piston rod 20302 (not shown in the figure).
As shown in fig. 8 and 9, the nut locking device 204 includes a locking head 20402, a turntable bearing 20401, a transmission gear 20404, a locking base 20406, a locking motor 20413, a cylindrical guide rail 20411, a cylindrical guide rail support 20410, a linear cylindrical slider 20412, a locking switch stopper 20409, a locking switch 20408, a locking switch support 20407, and a passive tension spring 20405, the locking motor 20413 is fixedly mounted on the locking base 20406 and connected to the transmission gear 20404, the locking head 20402 is mounted on the locking base 20406 through the turntable bearing 20401, a tightening sleeve which is matched with and penetrates through the locking nut 103 is disposed in the middle of the locking head 20402, a driven gear 20414 which is engaged with the transmission gear 20404 is disposed on the locking head 20402, the locking base 20406 is connected to the linear cylindrical slider 20412 through the locking switch stopper 20409, the linear cylindrical slider 20412 slides on the cylindrical guide rail 20411, the cylindrical guide rail 20411 is fixed to the support rod 2053 and the front plate 2051 of the tensioning support 205 through the cylindrical guide rail support 20410, the locking switch 20408 is fixedly mounted on the cylindrical guide rail support 20410 through a locking switch support 20407, for detecting the limit position between the locking base 20406 and the locking nut 103, judging whether the butting is good, when in butt joint and tensioning, a jack pull rod 20301 provided with a butt joint nut 20101 penetrates through the middle of the locking head 20402 to be in butt joint with the head plate tensioning screw 104, when the distance between the locking head 20402 and the locking nut 103 meets the requirement of the limit position, the locking switch 20408 detects a signal, namely, the locking motor 20413 is started to drive the locking head 20402 to rotate to lock the locking nut 103, when the distance between the locking head 20402 and the locking nut 103 becomes large or the locking motor 20413 reaches a threshold value, the locking motor 20413 can be stopped, the passive tension spring 20405 is connected with the locking base 20406 and the tensioning support 205, and thus the locking base 20406 and the tubular pile die have flexibility and hard collision is prevented.
As shown in fig. 1 and 12, the three-dimensional moving platform 3 moves in X, Y, Z three directions to make the end surface of the tensioning bracket 205, that is, the front plate 2051 coincide with the end surface of the head plate 104, the axis of the docking nut 20101 aligns with the axis of the head plate tensioning screw 104, the pull rod auxiliary hydraulic cylinder 20107 contracts, the docking motor 20104 at the tail rotates to drive the jack pull rod 20301 to move spirally until the head plate tensioning screw 104 triggers the limit switch 20102 on the docking nut 20101, the docking motor 20104 stops rotating, the pull rod auxiliary hydraulic cylinder 20107 stops contracting, and at this time, the docking and locking are completed; the tightening and locking device 202 is driven by a tightening and locking motor 20201 to enable the tightening and locking nut 20205 to rotate on the jack pull rod 20301 to move forwards until the tightening and locking nut 20205 is tightly attached to the end of the jack hydraulic cylinder 203, namely, the displacement sensor 20114 detects that the tightening and locking nut 20205 is attached to the piston rod 20302 of the jack hydraulic cylinder 203, and at the moment, the tightening and locking is completed; hydraulic pressure station 302 is to the interior oil feed of jack pneumatic cylinder 203, promotes the piston rearward movement, and the piston rod 20302 backward movement extrusion and nut 20205 that the piston passes through, nut 20205 that closes drives whole jack pull rod 20301 backward movement under the promotion of piston rod 20302, and until sliding ring 20112 contacts stroke opening 20116, hydraulic pressure station 302 stops to send oil, and the stretch-draw pressure among the real-time dynamic detection control tensioning system of pressure sensor, and nut locking device 204 twists lock nut 103 and moves the locking under the drive of locking motor 20413 simultaneously, and stretch-draw action is accomplished.
As a preferred embodiment, as shown in fig. 9, six similar conical tooth-shaped lines 20403 are formed in the inner cavity of the locking head 20402 of the nut locking device 204, the similar conical tooth-shaped lines 20403 of the locking head 20402 are gradually contacted with the outer surface of the locking nut 103 until the whole nut locking device 204 is pushed backwards, at this time, the passive tensioning spring 20405 is kept in a tensioned state, the stroke switch 20408 is triggered, the locking motor 20413 is started to rotate, and the locking head 20402 is further driven to rotate until the locking nut 103 is locked, but the nut locking device can also be realized by adopting a working nut screwing sleeve in the prior art, and the phase of the similar conical tooth-shaped line 20403 is just near the middle of the side line of the locking nut, so that the similar conical tooth-shaped line can smoothly pass; if the similar conic tooth line 20403 contacts the hexagon angle, the whole nut locking device 204 is pushed backwards, the passive tension spring 20405 is in tension, the locking switch 20408 is triggered (indicating that the similar conic tooth line of the new locking head is not aligned), and the locking motor 20413 drives the locking head 20402 to rotate through the transmission gear 20404 until a proper position is found. The similar conical tooth-shaped line 20403 of the locking head 20402 gradually contacts with the outer surface of the locking nut 103 until the similar conical tooth-shaped line is completely clamped with the outer surface of the locking nut, and the locking head locks the locking nut 103 under the drive of the locking motor 20413.
As shown in fig. 12 and 13, the three-dimensional moving platform 3 includes a moving base 305, a lifting carriage 303, a control console 301, a hydraulic station 302, a moving base slide rail 304, and a ground slide rail 306, the ground slide rail 306 is fixedly installed on the ground, the moving base 305 is installed on the ground slide rail 306, the moving base slide rail 304 is fixed on the moving base 305, the lifting carriage 303 is installed on the moving base slide rail 304, the distance of the tensioning device 2 in the X axis is adjusted by moving the moving base 305 on the ground slide rail 306, the distance of the tensioning device 2 in the Y axis is adjusted by moving the lifting carriage 303 on the moving base slide rail 304, and the distance of the tensioning device 2 in the Z axis is adjusted by moving a lifting hydraulic cylinder 30305 on the lifting carriage 303 up and down.
As shown in fig. 2, 12 and 13, the lifting trolley 303 includes a steel wheel 30301, a steel wheel support 30302, a lifting trolley base 30303, a cross support 30304, a central support shaft 30306, a lifting hydraulic cylinder 30305, a lifting trolley top plate 30307 and a buffer spring 30308, the lifting trolley top plate 30307 is provided with the buffer spring 30308 for mounting the tensioning device 2, the buffer spring 30308 plays a role in buffering when the tensioning device 2 is tensioned to prevent the tensioning device 2 from shaking up and down, the bottom of the lifting trolley base 30303 is mounted on a movable base slide rail 304 through the steel wheel 30301, one side of the cross support 30304 is hinged and connected with the lifting trolley base 30307 and the lifting trolley top plate 30307 up and down respectively, the other side of the cross support 30304 is connected with the lifting trolley base 30303 and the lifting trolley top plate 30307 through a guide rail slide block structure up and down respectively, the middle part of the cross support 30304 is hinged through the central support shaft, one end of the lifting hydraulic cylinder is hinged on the lifting, the other end is hinged on the central supporting shaft. The steel wheel 30301 slides on the sliding base sliding rail 304 to adjust the distance of the tensioning device 2 in the Y-axis direction, the lifting hydraulic cylinder 30305 stretches and retracts to drive the lifting trolley top plate 30307 to move up and down so as to adjust the movement of the tensioning device 2 in the Z-axis direction, the lifting trolley 303 is provided with the linear displacement sensor 5, and the linear displacement sensor 5 is used for detecting the lifting height of the tensioning device 2. As a preferred embodiment, the middle of the lifting trolley base 30303 is provided with a vertically penetrating mounting groove, the lifting trolley base 30303 at the mounting groove is provided with a downward support 30309, and the lower end of the lifting hydraulic cylinder 30305 is hinged to the support 30309, so that the telescopic stroke of the lifting hydraulic cylinder 30305 can be greatly increased, and the lifting height of the lifting trolley top plate 30307 can be increased.
It should be noted that, for the three-dimensional moving platform 3, the movement in the X and Y directions may be manually pushed, or may be driven by a motor, for example, a motor is added to the lifting trolley base 30303 to drive the steel wheel 30301 to rotate so as to complete the movement in the Y axis direction, and similarly, for the movement in the Z axis direction, besides the above-mentioned manner of the cross support 30304, a hydraulic cylinder may be used to directly lift or lower, and the specific implementation manner of the three-dimensional moving platform 3 does not affect the implementation of the technical solution of the present invention, and certainly, the three-dimensional moving function of the three-dimensional moving platform 3 may be completed by a combination of other translation devices in the technology, and therefore, the present invention is not described in detail again.
As shown in fig. 2 and 10, the pipe diameter detection device 4 is installed at the side of the transportation support 105 of the pipe pile mold, the pipe diameter detection device 4 includes a displacement sensor 404, a pipe diameter detection sleeve 403, a sensor fixing clip 405, a displacement sensor feeler lever 402 and a top pulley 401, a telescopic slide bar 406 is arranged in the pipe diameter detection sleeve 403, a spring is arranged between the slide bar 406 and the pipe diameter detection sleeve 403, the slide bar 406 is kept in an extended state through the spring, the top end of the slide bar 406 is provided with the top pulley 401 capable of contacting with a running wheel on the pipe pile mold, the displacement sensor 404 is installed at the side of the pipe diameter detection sleeve 403 through the sensor fixing clip 405, the displacement sensor feeler lever 402 is fixedly installed on the slide bar 406, the pipe diameter detection sleeve 403 is vertically and fixedly installed at the side of the transportation support 105, when the pipe pile mold is placed on the transportation support 105, the displacement sensor 404 detects the compression amount of the sliding rod 406 and matches with the self position size data to calculate the diameter and the axle center height of the running wheel.
The working process of the invention is as follows:
the end face of the tensioning bracket 205 is coincided with the end face of the head plate 102 by the three-dimensional moving platform 3 moving in X, Y, Z directions, the axis of the butt nut 20101 is aligned with the axis of the head plate tensioning screw 104, the moving base 305 slides on the ground sliding rail 306, the distance of the tensioning device 2 in the X-axis direction is adjusted, the lifting trolley 303 of the three-dimensional moving platform 3 slides on the moving base sliding rail 304, the distance of the tensioning device 2 in the Y-axis direction is adjusted, the distance of the tensioning device 2 in the Z-axis direction is adjusted by the stretching of the lifting trolley 303 through the stretching of the lifting hydraulic cylinder 30305, the pull rod auxiliary hydraulic cylinder 20107 on the tensioning device 2 is contracted, the butt motor 20104 rotates to drive the jack pull rod 20301 to move in a rotating mode until the head plate tensioning screw 104 triggers the limit switch on the butt nut 20101, and at the moment; the parallel locking device drives the parallel nut 20205 to rotate on the jack pull rod 20301 through the parallel motor until the parallel nut 20205 is attached to the jack hydraulic cylinder 203, and at the moment, parallel locking is completed; the hydraulic pressure station is through the control of control cabinet to the interior oil feed of jack pneumatic cylinder 203, promotes the piston and removes backward, and jam nut 20205 drives whole jack pull rod 20301 and removes backward under the promotion of piston, and the oil feed stops until the sliding ring contacts travel switch hydraulic pressure station, and the timely dynamic detection of sensor subassembly controls the stretch-draw pressure in the stretch-draw system, and meanwhile nut locking device twists lock nut under the drive of motor and moves the locking, and stretch-draw action is accomplished. After the tensioning action is finished, the butt joint motor 20104 rotates reversely, the pull rod auxiliary hydraulic cylinder extends, the butt joint nut 20101 is separated from the head plate tensioning screw 104, the operation process is repeated in a reciprocating mode, and the actions of pipe pile die alignment, connection, tensioning, locking and the like without interruption can be achieved.
In addition, the embodiment of the invention can also be provided with a P L C controller, the sensors and the motor are connected with the P L C controller, and the actions of the steps are controlled by the P L C controller.
Claims (7)
1. The utility model provides an automatic stretch-draw system of prestressing force tubular pile mould based on hydraulic cylinder, includes tensioning equipment, tubular pile mould subassembly and three-dimensional moving platform, tubular pile mould subassembly includes tubular pile mould and the first board stretch-draw screw rod that links to each other with tubular pile mould intramode reinforcing bar, its characterized in that: the tensioning device is installed on the three-dimensional moving platform and is aligned with the tubular pile die through the three-dimensional moving platform, the tensioning device comprises a tensioning support, a butt-joint locking device installed on the tensioning support, a locking device and a jack hydraulic cylinder, the tensioning support comprises a front plate, a rear plate and a plurality of support rods fixedly connecting the front plate and the rear plate, the jack hydraulic cylinder comprises a cylinder body, a piston rod and a hollow jack pull rod, the jack pull rod freely penetrates through the front end and the rear end of the cylinder body from a hollow through hole in the piston rod, the cylinder body of the jack hydraulic cylinder is fixedly installed on the rear plate of the tensioning support, and through holes for the jack pull rod to extend out to be in butt joint with the tensioning screw rods are formed in the middle parts of the front plate and the rear plate;
the butt joint locking device is arranged at the front end of the jack pull rod and is used for butt joint with the head plate tensioning screw rod, and the butt joint locking device comprises a butt joint nut in threaded fit connection with the head plate tensioning screw rod and a butt joint driving device for driving the butt joint nut to rotate so as to complete butt joint; the parallel locking device is arranged at the rear end of the jack pull rod and is used for parallel locking the jack pull rod and a piston rod of a jack hydraulic cylinder, and the parallel locking device comprises a parallel nut which is sleeved on the jack pull rod at the rear end of the jack hydraulic cylinder in a threaded fit manner and a parallel driving device which drives the parallel nut to rotate so as to slide along the jack pull rod;
the pipe pile die assembly further comprises a head plate and a locking nut, the head plate is fixedly arranged on the pipe pile die, a central hole for the head plate stretching screw to freely pass through is formed in the middle of the head plate, the head plate stretching screw is in threaded fit with the locking nut, the relative position of the head plate stretching screw and the head plate can be locked by screwing the locking nut, and the locking nut is screwed and locked by a nut locking device;
the nut locking device is arranged at the front end of the tensioning support and comprises a locking head, a locking base and a locking motor, the locking base is arranged at the front end of the tensioning support through a flexible device, the locking head is arranged on the locking base through a bearing, a tightening sleeve matched with the locking nut is arranged in the middle of the locking head, and the locking motor is used for driving the locking head to rotate, so that the locking nut is screwed, and the locking action is completed;
the flexible device comprises a cylindrical guide rail, a linear cylindrical sliding block and a passive tensioning spring, wherein the cylindrical guide rail is fixedly mounted on a support rod of the tensioning support in parallel, the linear cylindrical sliding block is mounted on the cylindrical guide rail, the locking base is mounted on the linear cylindrical sliding block, and the passive tensioning spring is mounted between the locking base and the inner side surface of the front plate of the tensioning support.
2. The automatic tensioning system of the prestressed pipe pile mould according to claim 1, characterized in that: the butt joint driving device comprises a butt joint motor, a butt joint support, a butt joint guide rail and a pull rod auxiliary hydraulic cylinder, the butt joint guide rail is fixedly installed at the rear end of the tensioning support, the butt joint support is installed on the butt joint guide rail through a sliding block, the butt joint support is connected with the tensioning support through the pull rod auxiliary hydraulic cylinder, the butt joint motor is installed on the butt joint support and connected with a jack pull rod shaft, the butt joint support is pulled through the pull rod auxiliary hydraulic cylinder, the jack pull rod can move towards a pipe pile die, and then the butt joint is completed through the rotation of the jack pull rod driven by the butt joint motor.
3. The automatic tensioning system of the prestressed pipe pile mould according to claim 1, characterized in that: the tightening locking device further comprises a tightening supporting plate and a tightening motor, the tightening nut is mounted on the tightening supporting plate through a bearing, and the tightening motor is connected with the tightening nut in a power transmission mode through gear transmission.
4. The automatic tensioning system of the prestressed pipe pile mould of claim 3, wherein: and tight locking device still includes the spacing guide arm of lock nut, the spacing guide arm fixed mounting of lock nut just with jack pull rod parallel mount on the stretch-draw support, lock nut passes through slider guide structure and installs on the spacing guide arm of lock nut, makes lock nut can only be along the axial motion of jack pull rod through the spacing guide arm of lock nut to make the jack pull rod and the piston rod of jack pneumatic cylinder tight.
5. The automatic tensioning system of the prestressed pipe pile mould according to claim 1, characterized in that: the three-dimensional moving platform comprises a moving base, a ground sliding rail and a lifting trolley, wherein the ground sliding rail is fixed on the ground, the moving base is installed on the ground sliding rail, the moving base is provided with a moving base sliding rail perpendicular to the ground sliding rail, the lifting trolley is installed on the moving base sliding rail of the moving base, and the tensioning device is installed at the lifting end of the top of the lifting trolley.
6. The automatic tensioning system of the prestressed pipe pile mould of claim 5, wherein: the lifting trolley comprises a lifting trolley base, a cross support, a lifting trolley top plate and a lifting hydraulic cylinder, wherein the bottom of the lifting trolley base is installed on a sliding rail of the movable base through steel wheels, the cross support is connected with the lifting trolley base and the lifting trolley top plate in an up-and-down hinged mode on one side respectively, the middle of the cross support is installed in a hinged mode through a central supporting shaft, one end of the lifting hydraulic cylinder is installed on the lifting trolley base in a hinged mode, and the other end of the lifting hydraulic cylinder is installed on the central supporting.
7. The automatic tensioning system of the prestressed pipe pile mould of claim 6, wherein: the lifting trolley is characterized in that a linear displacement sensor used for detecting the lifting height of a lifting trolley top plate is arranged on the lifting trolley base, and a buffer spring used for installing a tensioning device is arranged on the lifting trolley top plate.
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| CN201910301305.9A CN110039651B (en) | 2019-04-15 | 2019-04-15 | Automatic tensioning system of prestressing force tubular pile mould based on hydraulic cylinder |
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| CN201910301305.9A CN110039651B (en) | 2019-04-15 | 2019-04-15 | Automatic tensioning system of prestressing force tubular pile mould based on hydraulic cylinder |
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| CN110039651B true CN110039651B (en) | 2020-07-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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 |
| 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 |
| 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 |
| 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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| KR101767955B1 (en) * | 2015-10-27 | 2017-08-17 | 주식회사 삼성엠케이 | Tensioning assembly for making PHC pile and making method using the assembly |
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| CN203097301U (en) * | 2013-01-15 | 2013-07-31 | 柳州欧维姆机械股份有限公司 | Prestressed tendon tensioning pre-tensioning device |
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