CN208883389U - Steel strand wires group's anchor monoblock type automatic synchronization control system - Google Patents

Abstract

A kind of steel strand wires group anchor monoblock type automatic synchronization control system, is equipped with pre-tightening apparatus, integral tension device, hydraulic power unit, overall control center, and each section is organically combined together by high-pressure oil pipe, data transmission cable and control element.It is issued and is instructed by overall control center, hydraulic power unit driving pre-tightening apparatus, integral tension device realize that tensioning works by setup program；The single pretightening jack of the more pistons of monoblock type includes oil cylinder and piston, and oil cylinder is provided with multiple piston holes, and each piston apparatus is in the structure for constituting whole multiple pistons in piston hole.Its advantage is that pretightening jack, using the multiple piston structures of oil cylinder, integration degree is high, it can be achieved that overlength steel strand wires can be realized that jack is opened automatically, continuously pre-tightened, speed is fast, and cost of labor is low by more steel strand wires while automatic preload function；Preload and integral tension can be completed in one pumping plant, can control simultaneously multiple pumping plants by an overall control center, realizes multi beam prestressing tendon preload and integral tension simultaneously.

Description

Steel strand wires group's anchor monoblock type automatic synchronization control system

Technical field

The utility model relates to a kind of civil engineering construction system, in particular to a kind of steel strand wires group anchor monoblock type is automatic Synchronous control system.

Background technique

It is pre- in steel strand group anchor inhaul cable, steel strand wires external prestressing tendon, steel strand wires sunpender rope, steel strand wires tie-rod rope, post-tensioning It is then very heavy with large-tonnage generally first using preceding clip type jack by the single preload of steel strand wires in the stretching construction of stress rib etc. Integral tension is pushed up, the method has following defects that

(1) it is pre-tightened, can only be pre-tightened one by one using preceding clip type jack, due to generating phase mutual friction between steel strand wires, It will lead to each steel strand wires discontinuity.And since jack stroke is short, and steel strand wires and longer, it needs multiple to jack Artificial to fall to open tune rope, low efficiency, labor intensity is big, high altitude operation, increases security risk.

(2) with ordinary oil pump to jack provide external force, manual operation oil pump, at the same ordinary jack do not have displacement with The acquisition of the data such as tractive force, entirely with artificial reading, manual control, error is big, and risk is big.

Utility model content

The purpose of this utility model, which is just to provide one kind, can be achieved more steel strand wires while individually automatic preload, automatic entirety Tensioning function can realize that the automatic continuous multiple-pass of jack pre-tightens to overlength steel strand wires, at the same can in real time, accurately acquire position The data such as shifting, tractive force, according to the real-time adjustment force of data and speed, synchronism is high.Can be used for group anchor cable, arch bridge suspender, after The preload and tensioning of the presstressed reinforcing steels such as tension prestress engineering, it can also be used to large-scale component promoted, traction etc. engineerings track cable it is pre- Tight and tensioning steel strand wires group's anchor monoblock type automatic synchronization control system.

The solution of the utility model is such that

A kind of steel strand wires group anchor monoblock type automatic synchronization control system, including in stretch-draw jack, hydraulic power unit, master control The heart, by upper support foot, the fixed pre-tightening apparatus of top plate, the right end of stretch-draw jack passes through lower support foot for the left end of the stretch-draw jack It is fixed with mounting seat；The pre-tightening apparatus includes the single pretightening jack of the more pistons of monoblock type, the more pistons of the monoblock type Single pretightening jack includes oil cylinder and piston, and the oil cylinder is provided with multiple piston holes, and each piston apparatus is in structure in piston hole The structure of integral multiple pistons；The piston is the piston with through-hole, and punching set is socketed in through-hole, and the punching set is solid Due to oil cylinder, the piston structure mobile relative to oil cylinder and punching set is formed, the component in each piston hole is combined into a preload Unit is provided with the oil inlet cylinder hydraulic oil access for being connected to each piston and the oil return cylinder hydraulic oil that is connected to each piston on cylinder wall Access, the structure for constituting each piston while stretching out or bouncing back, oil inlet cylinder hydraulic oil access and oil return cylinder hydraulic oil access connect Logical hydraulic power unit；The left end of the single pretightening jack of the more pistons of monoblock type is connected with single hole tool anchor slab, the single hole work Tool anchor slab is provided with the hole that single steel strand passes through, and guarantees that steel strand wires pass through punching set, single hole tool anchor slab；The single hole moveable anchor Each single hole left end of plate is the hole cooperated with work clip sheet；Stretching bed seat left end is connected with automated tool anchor, described to start building certainly Tool anchor is provided with the hole that single steel strand passes through, and guarantees that steel strand wires pass through, and each single hole in automated tool anchor left end is and work The hole of intermediate plate cooperation.

More specific technical solution further include: the left end of the single hole tool anchor slab is connected with movable panel, the activity Top plate is socketed on the guide rod being fixed on single hole tool anchor slab, and elastic force apparatus is equipped between guide rod and movable panel, The elastic force promotion movable panel of the elastic force apparatus to the right withstands on the left side of work clip sheet.

Further: the hydraulic power unit includes fuel tank, electronic box, control valve group, pressure sensor, the control valve group packet Valve body, solenoid directional control valve, automatically controlled overflow valve are included, the control valve group is provided with oil inlet, oil return opening, each oil inlet, oil return Mouth is respectively provided with a solenoid directional control valve, and the solenoid directional control valve is single pre- to control the more pistons of monoblock type when pre-tightening Tight jack, in tensioning to control a stretch-draw jack.

It is further: the wire sub-panel with through-hole to be provided between top plate and automated tool anchor, the steel for that will dissipate twists Line collapses in parallel to be passed through jack, is equipped with inner chamfer at the through-hole edge of wire sub-panel.

The utility model has the advantages that:

1, pretightening jack uses the multiple piston structures of oil cylinder, and integration degree is high, it can be achieved that more steel strand wires are same Shi Zidong pre-tightens function, and working space is small；

2, jack is opened automatically to be realized to overlength steel strand wires, continuous to pre-tighten, speed is fast, and cost of labor is low；

3, preload and integral tension can be completed in a pumping plant, can control multiple pumping plants simultaneously by an overall control center, It realizes multi beam prestressing tendon preload and integral tension simultaneously, and can in real time, accurately acquire the data such as displacement, stretching force, according to The real-time adjustment force of data and speed, synchronism is high, and stability is good；

4, wire sub-panel structure can collapse the steel strand wires of diverging parallel, conveniently reeve and tensioning；The application of locking anchorage can Ensure the safety of work progress.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model.

Fig. 2 is the oil cylinder and preload unit layout drawing of the single pretightening jack A of the more pistons of monoblock type of the utility model.

Fig. 3 is the A-A cross-sectional view of Fig. 2.

Fig. 4 is that steel strand wires group's anchor monoblock type automatic synchronization control system pumping plant panel components installation of the utility model is shown It is intended to.

Fig. 5 is integrated valve group structural schematic diagram.

Fig. 6 is steel strand wires group's anchor monoblock type automatic synchronization control system hydraulic schematic diagram of the utility model.

Appended drawing reference in figure are as follows:

A, pretightening jack, B, stretch-draw jack, C, hydraulic power unit,

1, steel strand wires, 2, reset spring, 3, single hole moveable anchor anchor slab, 4, guide rod, 5, movable panel, 6, tool clamping piece, 7, pretightening jack oil return opening, 8, pretightening jack oil cylinder, 9, pretightening jack piston, 10, pretightening jack oil inlet, 11, Positioning plate, 12, top plate, 13, wire sub-panel, 14, upper support foot, 15, automated tool anchor, 16, displacement sensor, 17, stretch-draw jack Oil return opening, 18, stretch-draw jack oil inlet, 19, stretch-draw jack oil cylinder, 20, lower support foot, 21, locking anchorage, 22, installation bottom Seat, 23, pressing plate, 24, cored screw, 25 stretch-draw jack pistons, 26, stretch-draw jack punching set, 27, preload unit installation sky Between, 28, electronic box, 29, variable-frequency motor, 30, solenoid directional control valve, 31, valve body, 32, pressure sensor, 33, oil inlet, 34, oil return Mouthful, 35, pressure gauge connection, 36, automatically controlled overflow valve, 37, oil filler, 38, solenoid valve main valve, 39, input pressure table, 40, first Check valve, 41, second one-way valve, 42, punching set, 43, oil inlet cylinder hydraulic oil access 44, oil return cylinder hydraulic oil access, 45, oil return Pressure gauge.

Specific embodiment

As shown in Figure 1, the present invention is equipped with pre-tightening apparatus, integral tension device, hydraulic power unit, overall control center, each section is logical High-pressure oil pipe, data transmission cable and control element is crossed organically to be combined together.It is issued and is instructed by overall control center, hydraulic pump It stands and pre-tightening apparatus, integral tension device is driven to realize that tensioning works by setup program.Wherein have including stretch-draw jack B, hydraulic The left end of pumping plant C, overall control center, the stretch-draw jack B are fixed with pre-tightening apparatus, tensioning thousand by upper support foot 14, top plate 12 The right end of jin top B is fixed with mounting seat 22 by lower support foot 20；Pre-tightening apparatus pre-tightens each steel wire before being used for integral tension To initial stress state, keep each steel strand wires stress consistent.It includes pretightening jack A, single hole moveable anchor, positioning plate 11, top plate 12, upper support foot 14, wire sub-panel 13 etc., pre-tightening apparatus include the single pretightening jack A of the more pistons of monoblock type, the more piston lists of monoblock type Root pretightening jack A includes oil cylinder 8 and piston 9, and the oil cylinder 8 is provided with 7 piston holes, and each piston 9 is installed in piston hole Constitute the structure of whole 7 pistons；The piston 9 is the piston with through-hole, and punching set 42, the punching are socketed in through-hole Set 42 is fixed on oil cylinder 8, forms structure of the piston 9 relative to 42 movement of oil cylinder 8 and punching set, and the component in each piston hole closes For a preload unit, be provided on 8 wall of oil cylinder be connected to the oil inlet cylinder hydraulic oil access 43 of each piston be connected to each piston Oil return cylinder hydraulic oil access 44, constitute each piston and meanwhile stretch out or retraction structure, oil inlet cylinder hydraulic oil access into Hydraulic fluid port 10 is connected to hydraulic power unit with the oil return opening 7 of oil return cylinder hydraulic oil access；The single pretightening jack of the more pistons of monoblock type Left end be connected with single hole tool anchor slab 3, the single hole tool anchor slab 3 is provided with the hole that single steel strand passes through, and guarantees steel strand wires Across punching set, single hole tool anchor slab 3；Each single hole left end of the single hole tool anchor slab 3 is the hole cooperated with work clip sheet； 16 left end of stretching bed seat is connected with automated tool anchor 15, and the automated tool anchor 15 is provided with the hole that single steel strand passes through, Guarantee that steel strand wires pass through, each single hole in 15 left end of automated tool anchor is the hole cooperated with work clip sheet.

Single hole moveable anchor is installed in 9 front end of piston, and a piston matches an automatic single hole moveable anchor.The automatic single hole work Have anchor and be equipped with tool anchor slab 3, tool clamping piece 6, is installed with the guiding being axially arranged along the piston 9 on the tool anchor slab 3 Bar 4 is arranged with movable panel 5 on the guide rod 4, is equipped with bullet between the limited block and movable panel 5 of 4 end of guide rod Power device (elastic force apparatus of the present embodiment is the reset spring 2 for being set in guide rod 4), the elastic force of the elastic force apparatus to the right pushes away Dynamic movable panel 5 withstands on the left side of work clip sheet；The movable panel 5 is placed in the tool clamping piece 6 and the reset spring 2 Between, movable panel 5 is provided with the through-hole of steel strand.

Described 14 one end of upper support foot and stretch-draw jack B are affixed, and the other end and the top plate 12 are affixed.The wire sub-panel 13 are located at and are fixed between the automated tool anchor 15 of stretch-draw jack B and top plate 12 and affixed with upper support foot 14.In the sub-wire The through-hole of steel strand is set on plate 13, top plate 12.The effect of the wire sub-panel 13 is to collapse the steel strand wires 1 of diverging in parallel To be passed through jack, through-hole edge is equipped with inner chamfer, and to prevent steel strand wires, on the corner stress is impaired.Preload when construction Jack A is consolidated by the positioning plate 11 and high-strength bolt with the top plate 12.

Integral tension device is for prestressing muscle or the integral tension of track cable.It includes stretch-draw jack B, displacement sensing Device 16, automated tool anchor 15, locking anchorage 21, lower support foot 20, mounting seat 22 etc..Institute's displacement sensors 16 are arranged described On the oil cylinder 17 of stretch-draw jack B.The locking anchorage 21 is mounted on pedestal 22, is equipped with anchor slab, intermediate plate, 23 and of pressing plate Cored screw 24, the pressing plate 23 is installed in anchor slab left end, and is provided with through-hole, and through-hole has an internal screw thread, the cored screw 24 with Through hole whorl connection.The effect of cored screw 24 for steel strand wires first is that pass through, second is that preventing intermediate plate from loosening in component decentralization.

Hydraulic power unit C is the power mechanism of system comprising fuel tank, variable-frequency motor 29, control valve group, pressure sensor 32 etc..The control valve group includes valve body 31, solenoid directional control valve 30, overflow valve 36, is mounted on pretightening jack in-line First check valve 40, the second one-way valve 41 being mounted on stretch-draw jack in-line etc..

Control valve group is equipped with oil inlet 33, oil return opening 34, and each oil inlet and oil return opening are furnished with a solenoid directional control valve, use To control an a pretightening jack A and stretch-draw jack B.When pre-tightening, second one-way valve 41 is closed, and first is unidirectional Valve 40 is opened, and pretightening jack A can be driven, and in integral tension, the first check valve 40 is closed, and second one-way valve 41 is opened, Stretch-draw jack B can be driven；The automatically controlled overflow valve 36 is arranged on total in-line, plays the role of safeguard protection.

In practice of construction, as needed, overall control center can the work of control separate unit pumping plant, also can control more pumps Station works at the same time；One pumping plant can only control single set pre-tightening apparatus and the work of integral tension device, and more sets also can control to pre-tighten Device, more set integral tension devices work at the same time.

The control method of one implementation of the utility model is as follows:

1, after equipment being installed, pretightning force setting value, stretching force setting value or displacement are inputted by the touch screen of overall control center Setting value is set according to actual demands of engineering, when need with stretching force be control target when stretching force setting value, when need with Using displacement setting value when shift value is control target, and starting device, equipment work as follows automatically:

2, pre-tighten: overall control center issues instruction, and the first check valve 40 is opened, and second one-way valve 41 is closed, solenoid directional control valve 30 movements, give pretightening jack A fuel feeding, and hydraulic oil sequentially enters each preload working cell from pretightening jack oil inlet 10 Draw oil cylinder, each working cell piston 9 that pre-tightens extends, single hole tool anchor slab 3 with clamp the tool clamping pieces 6 of steel strand wires 1 together to Forward, loose steel strand wires 1 are tensed, while 32 real-time measurement pressure value of pressure sensor and pressure data are transmitted to master control Center.Automated backhaul carries out the preload of next stroke after one stroke of elongation of piston 9, drives single hole tool anchor slab 3 to return in piston 9 The tool clamping piece 6 of Cheng Shi, single hole moveable anchor reset under the action of reset spring 2, pre-tighten and prepare for next stroke, install simultaneously The self-locking under the action of automated tool anchoring clamping piece on integral tension jack B piston is in steel strand wires gravity, prevents steel strand wires It falls after rise, moves in circles in this way, until pretightning force reaches setting value.When a certain steel strand wires pretightning force reaches pretightning force setting value When, pressure information is transferred to control centre by pressure sensor, and control centre issues instruction, and automatically controlled overflow valve 36 starts, this is pre- Tight working cell can not be pressurized again, and the piston 9 of the unit stops working, and the steel strand wires that remaining does not reach preload setting power are corresponding It pre-tightens working cell to work on, in this way until all steel strand wires reach pretightning force setting value, overall control center issues instruction, electricity Magnetic reversal valve 30 acts, and stops to pretightening jack A fuel feeding.

3, integral tension: after the completion of preload, overall control center issues instruction, and the first check valve 40 is closed, second one-way valve 41 It opens, solenoid directional control valve 30 acts, and gives stretch-draw jack B fuel feeding, and stretch-draw jack B oil inlet simultaneously stretches cylinder to presstressed reinforcing steel progress Tensioning, while 32 real-time measurement pressure value of pressure sensor and passing data back overall control center, 16 real-time measurement of displacement sensor Shift value displacement data is transmitted to overall control center.In stretching process, the pressing plate 23 and hollow bolt 24 of locking anchorage 21 can be prevented Intermediate plate loosens.After stretch-draw jack B stretches one stroke of cylinder, if pressure or displacement do not reach setting value, then automated backhaul is carried out The tensioning of next stroke.In stretch-draw jack piston driving automated tool anchor backhaul, the tool clamping piece of automated tool anchor is multiple It is resetted under the action of the spring of position, is next stroke pulling preparation, the intermediate plate of locking anchorage 21 is in steel strand wires retraction force or component weight Self-locking under the action of power prevents steel strand wires relaxation or component from falling after rise.It moves in circles in this way, until stretching force or displacement reach and set Definite value.

4, adjust: drag-line or component tensioning substantially in place after, need to finely tune toward contact.When needing to transfer drag-line or component When adjustment, the hollow bolt 24 of locking anchorage 21 is screwed off, removing intermediate plate can transfer.

Claims (6)

1. a kind of steel strand wires group anchor monoblock type automatic synchronization control system, including stretch-draw jack (B), hydraulic power unit (C), master control Center, it is characterised in that: opened by upper support foot (14), the fixed pre-tightening apparatus of top plate (12) left end of the stretch-draw jack (B) The right end of jack (B) is drawn to be fixed with mounting seat (22) by lower support foot (20)；The pre-tightening apparatus includes that monoblock type is mostly living It fills in single pretightening jack (A), the single pretightening jack of the more pistons of the monoblock type (A) includes oil cylinder (8) and piston (9), The oil cylinder (8) is provided with multiple piston holes, and each piston (9) is installed on the structure that whole multiple pistons are constituted in piston hole；Institute Stating piston (9) is the piston with through-hole, is socketed with punching set (42) in through-hole, and the punching set (42) is fixed on oil cylinder (8), Piston (9) structure mobile relative to oil cylinder (8) and punching set (42) is formed, the component in each piston hole is combined into a preload Unit is provided on oil cylinder (8) wall and is connected to the oil return that the oil inlet cylinder hydraulic oil of each piston access (43) with is connected to each piston Cylinder hydraulic oil access (44), the structure for constituting each piston while stretching out or bouncing back, the oil inlet of oil inlet cylinder hydraulic oil access (10) hydraulic power unit is connected to the oil return opening (7) of oil return cylinder hydraulic oil access；The single pretightening jack of the more pistons of monoblock type Left end be connected with single hole tool anchor slab (3), the single hole tool anchor slab (3) is provided with the hole that single steel strand passes through, and guarantees steel Twisted wire passes through punching set, single hole tool anchor slab (3)；Each single hole left end of the single hole tool anchor slab (3) is and work clip sheet The hole of cooperation；Stretching bed seat (16) left end is connected with automated tool anchor (15), and the automated tool anchor (15) is provided with single steel and twists The hole that line passes through guarantees that steel strand wires pass through, and each single hole in automated tool anchor (15) left end is the hole cooperated with work clip sheet.

2. steel strand wires group anchor monoblock type automatic synchronization control system according to claim 1, it is characterised in that: the single hole The left end of tool anchor slab (3) is connected with movable panel (5), and the movable panel (5), which is socketed on, is fixed on single hole tool anchor slab (3) On guide rod (4), elastic force apparatus, the bullet of the elastic force apparatus to the right are installed between guide rod (4) and movable panel (5) Push the left side that dynamic movable panel (5) withstands on work clip sheet.

3. steel strand wires group anchor monoblock type automatic synchronization control system according to claim 1, it is characterised in that: described hydraulic Pumping plant includes fuel tank, electronic box (28), control valve group, pressure sensor (32), and the control valve group includes that valve body (31), electromagnetism change To valve (30), automatically controlled overflow valve (36), the control valve group is provided with oil inlet (33), oil return opening (34), each oil inlet (33), oil return opening (34) is respectively provided with a solenoid directional control valve, and the solenoid directional control valve is when pre-tightening to control an entirety The single pretightening jack of the more pistons of formula (A), in tensioning to control a stretch-draw jack (B).

4. steel strand wires group anchor monoblock type automatic synchronization control system according to claim 1, it is characterised in that: in top plate (12) wire sub-panel (13) with through-hole is provided between automated tool anchor (15), the steel strand wires (1) for that will dissipate collapse flat Row is equipped with inner chamfer to be passed through jack, at the through-hole edge of wire sub-panel (13).

5. steel strand wires group anchor monoblock type automatic synchronization control system according to claim 1, it is characterised in that: the pedestal (22) left end is equipped with locking anchorage (21), and the locking anchorage (21) is equipped with anchor slab, intermediate plate, pressing plate (23) and cored screw (24), the pressing plate (23) is installed in anchor slab front end, and is provided with through-hole, and through-hole has an internal screw thread, the cored screw (24) and logical Hole is threadedly coupled.

6. steel strand wires group anchor monoblock type automatic synchronization control system according to claim 1, it is characterised in that: described is total Control center is equipped with electric cabinet, operation center or operating platform, touch screen, PLC control unit, frequency converter, analog acquisition module.