CN200988081Y

CN200988081Y - Hydraulic bending device for steel bar

Info

Publication number: CN200988081Y
Application number: CN 200620067458
Authority: CN
Inventors: 冯满荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-11-10
Filing date: 2006-11-10
Publication date: 2007-12-12
Anticipated expiration: 2016-11-10

Abstract

The utility model discloses a hydraulic folding device for the steel bar, which comprises a rack oil cylinder, a stroke adjustment frame connected and synchronously operating with the rack, a controlling valve body, a swing arm poking the valve core to operate, a motor, a hydraulic pump. The controlling valve body comprises a plurality of controlling valves made of the same block, the valves are provided with no gap and not need to be connected with each other, the oil circuit is shorter, the power consumption is lower, the valves will not be provided with oil leakage therebetween, the utility model is firmness and durable, convenient in installation, the swing arm of the controlling valve core is directly connected with the valve core, the utility model is more concise and compact in structure, low in operation friction, higher in stability, lower in noise.

Description

The hydraulic pressure apparatus for bending of reinforcing bar

Technical field

The utility model relates to a kind of apparatus for bending of hydraulic pressure, particularly relates to a kind of hydraulic pressure apparatus for bending of reinforcing bar.

Background technology

The apparatus for bending of hydraulic pressure has one or more hydraulic valve controls in the prior art, and single valve control operating efficiency is very low.A plurality of hydraulic valve controls, need to be connected between valve and the valve, what have connects by oil pipe, and a plurality of screws of the usefulness that has are connected to a combination valve to several valves, and joint face is many between valve and the valve, assemble time-consuming, the making working (machining) efficiency is low, and oil circuit is longer between leakage of oil and valve and the valve easily, and the oil resistance is big, drive bindiny mechanism's complexity of spool, because bindiny mechanism's complexity, it is many to connect fulcrum, and rubbing surface is many, add up to ten thousand times operating frequency every day, in the of short duration time bigger wearing and tearing are just arranged, thereby service life is shorter, structure is not compact, also break down easily, cost of manufacture is also high.And crooked dish can only the independent adjustment stroke of angle, thereby inefficiency.

Summary of the invention

The purpose of this utility model just provides a kind of compact conformation, working stability, process easy to assembly, security of operation, noise is low, the hydraulic pressure apparatus for bending of high efficiency and durable reinforcing bar.

The purpose of this utility model is achieved in that

The hydraulic pressure apparatus for bending of the utility model reinforcing bar comprises the tooth bar hydraulic cylinder that is connected with the bending disk gear, is connected with tooth bar and the valve body of the stroke adjustment support of synchronous operation, control oil circuit, load off-load change over valve, commutation driver's valve, reversal valve, the swing arm of load off-load change over valve, swing arm, motor and the hydraulic pump of commutation driver's valve.Hydraulic pressure in described application valve body load off-load change over valve, commutation driver's valve and reversal valve are arranged in the valve body that same material makes, an end that exposes of the spool of load off-load change over valve directly flexibly connects with the swing arm of hydraulic pressure load off-load change over valve, an end that exposes of the spool of commutation driver's valve directly with the swing arm flexible connection of commutation driver's valve.One side of the tooth bar of described tooth bar hydraulic cylinder is provided with the stroke support, support is provided with two stroke adjustment contact blocks, one of them is the contact block of big low-angle bending conversion, another is the contact block of wide-angle bending, the contact block that big low-angle bending is changed can be regulated the contact block position by the outer conversion handle of casing, and the conversion handle is that telescopic movable connects with being connected dried.Described motor and hydraulic pump are the connecting shaft butt joints.Hydraulic pressure load off-load change over valve in the described application valve body and a side of commutation driver's valve are provided with leakage hole and are communicated with fuel tank.

The utility model is arranged on several valves in the valve body that same block of material makes, and rationally distributes, and making between valve and the valve does not have joint face, and not only leakproof but also oil circuit are shorter, and the oil resistance reduces, and power consumption, noise reduce, and fabrication and installation are convenient.Because an end of the spool of hydraulic pressure load off-load change over valve and commutation driver's valve is direct and the swing arm of hydraulic pressure load off-load change over valve and commutation driver's valve flexibly connects, the attaching parts of control spool have been reduced, because two swing arms in the control valve action, are that structure is compact and reasonable more around the axle swing, running resistance reduces, wearing and tearing reduce, thereby have prolonged the service life of equipment greatly, and two valves are controlled respectively, simple to operate flexible, stability is high.Owing to be provided with two stroke contact blocks on the stroke support, but two different angle of bend of moment adjusting have improved operating efficiency, the type of attachment of the connecting rod of the conversion handle of big low-angle bending adopts telescopic butt joint, promptly rotatable the adjusting, scalable again, guaranteed the safety of moving.Because motor has adopted connecting shaft to dock with hydraulic pump, make energy consumption and noise reduce the service life of having improved motor and oil pump.

Description of drawings

Fig. 1 is a surface structure schematic perspective view of the present utility model.

Fig. 2 is a left front of the present utility model internal structure schematic perspective view, and wherein the piston of hydraulic cylinder is in holding state.

Fig. 3 is a left front of the present utility model internal structure schematic perspective view, and wherein the piston of hydraulic cylinder is in return state.

Fig. 4 is a right back of the present utility model internal structure schematic perspective view.

Fig. 5 is a left back of the present utility model internal structure schematic perspective view

Valve body oil circuit schematic diagram when Fig. 6 is hydraulic cylinder piston of the present utility model work.

Valve body oil circuit schematic diagram when Fig. 7 returns for hydraulic cylinder piston of the present utility model

Fig. 8 is the feeler lever structural representation of hydraulic pressure load off-load change over valve of the present utility model.

Fig. 9 is the front view of big low-angle bending conversion equipment of the present utility model.

Figure 10 is the right view of big low-angle bending conversion equipment of the present utility model.

The specific embodiment

Following examples will be further described the utility model in conjunction with the accompanying drawings.

Fig. 1 is the surface structure schematic diagram, is made up of housing 5, bending rotating disk 1, working panel 2, wide-angle stroke adjustment handle 3, low-angle stroke adjustment handle 4, big low-angle bending conversion handle 7, power switch 8.Fig. 2, Fig. 3, Fig. 4, Fig. 5 are internal structure schematic perspective view of the present utility model, be connected comprising the tooth bar hydraulic cylinder 11 that is connected with the bending disk gear, with tooth bar 25 and stroke adjustment support 9, the application valve body 14 of synchronous operation, stir the operation of hydraulic pressure load off-load conversion spool swing arm 22, stir swing arm 21, motor 26 and the hydraulic pump 27 of the spool operation of commutation driver's valve.Hydraulic pressure in the application valve body 14 load off-load change over valve 33, commutation driver's valve 34, reversal valve 35 are arranged in the valve body 14 that same material makes, the direct swing arm 22 with load off-load change over valve of an end that exposes of the spool 20 of load off-load change over valve flexibly connects, and the direct swing arm 21 with the commutation driver's valve of an end that exposes of the spool 19 of commutation driver's valve flexibly connects.Pedal 6 flexibly connects by the swing arm 22 of connecting rod with the load off-load, do not step on before the pedal 6, the swing arm 22 of load off-load change over valve is in the endpoint location that spool 20 is swung to the left side, high-pressure and hydraulic oil can not enter commutation driver's valve 34, when stepping on pedal 6, swing arm 22 counter-clockwise swings of load off-load change over valve, under the effect of spring, make the swing arm of load off-load change over valve keep duty, as shown in Figure 6, the spool 20 of load off-load change over valve direction to the right moves, spool is blocked the oil return opening of this valve, make hydraulic oil enter commutation driver's valve 34, the oil circuit in commutation driver's valve UNICOM reversal valve 35 left sides of this moment, the spool 36 that hydraulic oil promotes reversal valve moves right, and the A mouth that makes hydraulic oil outflow valve A enter hydraulic cylinder 11 promotes piston linkage tooth bar 25 and stroke adjustment support 9 moves simultaneously.When

contact block

12 or 13 and swing arm 21 collision of commutation driver's valve, the spool 19 that swing arm 21 this moment is rotated counterclockwise linkage commutation driver's valve moves right, as Fig. 7, open towards the oil duct on reversal valve right side this moment, and the spool 36 that promotes reversal valve is moved to the left, blocked the oil duct that leads to the A mouth, the oil-out B that makes hydraulic oil pass through valve is imported the B mouth of hydraulic pump 11 by oil pipe, promote piston and turn back to original state, keep this state under the effect of spring 17, the low pressure oil that hydraulic cylinder is returned is returned fuel tank 14.

Fig. 8 is the feeler lever 23 of hydraulic pressure load off-load change over valve; comprise hold-down screw 39, feeler lever housing 40, spring 41, contact 42; this set is can conveniently swing under the effect at spring during by counter-clockwise swing in the swing arm 22 of stepping on pedal 6 interlock load off-load changes over valve; simultaneously since the effect of spring 41 when the feeler lever 23 of load off-load change over valve is returned the bump dynamics cushion to some extent, the protection swing arm has also reduced noise simultaneously.

Fig. 9, Figure 10 are the device of big low-angle bending conversion, comprise conversion handle 7, outer expansion link 32, interior expansion link 31, stroke fixed block 30, spring 43, low-angle contact block 13.Big low-

angle contact block

12,13 on the stroke adjustment support 9 is connected with stroke support 9 by the nut of stroke adjustment handle 3,4,

contact block

12,13 is fixed on different positions, the spacing of its collision swing arm 21 is just different, the corner of bending rotating disk 1 is just different, two

contact blocks

12,13 are adjusted in different positions, thereby can regulate two kinds of different bending angles in moment.When making rotating disk 1 low-angle bending, moving conversion handle 7 makes contact block 13 can collide swing arm 21, when not needing the low-angle bending, moving conversion handle 7 in the other direction, make contact block 13 leave the position of bump, wide-angle bending this moment contact block 12 works and carries out wide-angle bending operation.

Motor 26 docks with hydraulic pump 27 connecting shafts among Fig. 4, has promptly saved the space, makes operation more stable again, reduces noise and is convenient to fixed installation.Be provided with leakage hole L in valve body one side, this leakage hole is arranged on an end of hydraulic pressure load off-load change over valve 33 and commutation switching valve 34, this leakage hole L not only enters fuel tank to the oil that this end leaks by

pipeline

15,29, has also discharged gas simultaneously, to keep the normal operation of spool.

Claims

1, a kind of hydraulic pressure apparatus for bending of reinforcing bar, comprise the tooth bar hydraulic cylinder (11) that is connected with the bending disk gear, be connected the also stroke adjustment support (9) of synchronous operation with tooth bar (25), the valve body (14) of control oil circuit, hydraulic pressure load off-load change over valve (33), commutation driver's valve (34), reversal valve (35), the swing arm (22) of load off-load change over valve, the swing arm (21) of commutation driver's valve, motor (26) and hydraulic pump (27), it is characterized in that the hydraulic pressure load off-load change over valve (33) in the application valve body (14), commutation driver's valve (34) and reversal valve (35) are arranged in the valve body (14) that same material makes, the direct swing arm (22) with load off-load change over valve of an end that exposes of the spool (20) of load off-load change over valve flexibly connects, and the direct swing arm (21) with the commutation driver's valve of an end that exposes of the spool (19) of commutation driver's valve flexibly connects.

2, the hydraulic pressure apparatus for bending of reinforcing bar as claimed in claim 1, a side that it is characterized in that the tooth bar (25) of tooth bar hydraulic cylinder (11) is provided with stroke support (9), support is provided with two stroke adjustment contact blocks (12,13), one of them is the conversion contact block (13) of big low-angle bending, another is the contact block (12) of wide-angle bending, the conversion contact block (13) of big low-angle bending can be regulated the position of contact block by the outer conversion handle (7) of casing, and the connecting rod (31,32) of conversion handle is telescopic flexible connection.

3, the hydraulic pressure apparatus for bending of reinforcing bar as claimed in claim 1, it is characterized in that the commutating swing arm (21) of driver's valve and the swing arm (22) of load off-load change over valve are arranged on the same axle, and can swing around axle.

4, the hydraulic pressure apparatus for bending of reinforcing bar as claimed in claim 1 is provided with spring (41) in the feeler lever (23) of the off-load change over valve that it is characterized in that loading, its contact (42) but elastic telescopic.

5, the hydraulic pressure apparatus for bending of reinforcing bar as claimed in claim 1 is characterized in that motor (26) and hydraulic pump (27) are the connecting shaft butt joints.

6, the hydraulic pressure apparatus for bending of reinforcing bar as claimed in claim 1 is characterized in that a side of the hydraulic pressure load off-load change over valve (33) in the application valve body (14) and the driver's valve (34) that commutates is respectively equipped with leakage hole L, and is communicated with fuel tank (16).