CN2574815Y

CN2574815Y - Pulley cutter

Info

Publication number: CN2574815Y
Application number: CN 02261279
Authority: CN
Inventors: 史皆扬
Original assignee: SHANGHAI IRON AND STEEL PROCESS TECHNOLOGY INST
Current assignee: SHANGHAI IRON AND STEEL PROCESS TECHNOLOGY INST
Priority date: 2002-11-05
Filing date: 2002-11-05
Publication date: 2003-09-24
Anticipated expiration: 2012-11-05

Abstract

The utility model relates to a hydraulic inner deburring device for butt welded pipes, which comprises a machine body and a hydraulic control mechanism, wherein, two guide wheels are arranged on the machine body, and one end of the machine body is provided with an annular cutter head and a supporting rod which is connected with a supporting roller; the hydraulic control mechanism comprises two single-action cylinders, oil pumps which are orderly connected, a drive motor, an oil filter, an oil tank, an overflow valve, an accumulator, a hydraulic one-way valve, etc., and a three-position four-way electromagnetic change valve. An intermediate position function of the change valve is H, the A and B ends of the change valve are separately connected with the two single-action cylinders, the P end is connected with the oil pump, the drive motor and the oil tank, and the T end is connected with the oil tank. The hydraulic control one-way valve is connected in an oil supply circuit of one of the single-action cylinders in series, and the accumulator is connected in the oil supply circuit. The utility model has the advantages that the utility model only uses one three-position four-way change valve to replace the function of three electromagnetic change valves in the prior art aiming at the situation that only one of the single-action cylinders is in the working condition in use at most, and thus an oil passage can be greatly simplified, and an electric control line is consequently simplified.

Description

The fluid pressure type ERW removes the internal hair thorn device

Technical field

The utility model relates to a kind of fluid pressure type ERW and removes the internal hair thorn device.

Background technology

The fluid pressure type ERW goes the internal hair thorn device to be used for the interior crator that generates when ERW is produced online removal inner wall of welded pipe high-frequency welding on the unit, as shown in Figure 1, comprise body 20, guide wheel 201,202, annular cutter head 30, support bar 40, support roller 50, one-way cylinder 9 (withdrawing), oil cylinder 10 (feed) and hydraulic control; By the action of one-

way cylinder

9,10, make the annular cutter head 30 that is arranged on the body 20 realize the advance and retreat cutter.One-way cylinder 9 (withdrawing), two oil cylinders of one-way cylinder 10 (feed) are in hydraulic drive, have only at most one in running order, should be by two one-way cylinders of general conventional design respectively by two two-position three way solenoid directional control valve control actions, and when two oil cylinders are not all worked, other has the off-load of a bi-bit bi-pass solenoid directional control valve control oil pump, the problem that conventional design exists has been to use three solenoid directional control valves and that oil path block is manufactured and designed is complicated, and its electric control loop is also complicated thereupon.

Summary of the invention

The purpose of this utility model is to provide a kind of above-mentioned the deficiencies in the prior art that overcome, and fluid pressure type ERW simple in structure, easy to use removes the internal hair thorn device.

For achieving the above object, the ERW that the utility model provides removes the internal hair thorn device, comprises body, hydraulic control; Wherein, two guide wheels are set on the body, the support bar that an end is installed an annular cutter head and connected a support roller; Hydraulic control comprises two one-way cylinders and the oil pump and drive motors, oil filter, fuel tank and the overflow valve that link to each other successively; Described hydraulic control also comprises a 3-position 4-way solenoid directional control valve, the meta function of this reversal valve is H, the A of 3-position 4-way solenoid directional control valve, B two ends are connected with two one-way cylinders respectively, and the P end links to each other with fuel tank with oil pump and drive motors, and the T end is connected with fuel tank.

Further, also comprise accumulator, hydraulic control one-way valve, Pressure gauge; This hydraulic control one-way valve is serially connected with in the oil supply loop of an one-way cylinder wherein, and accumulator, Pressure gauge are arranged in this oil supply loop.

Advantage of the present utility model is, design in use has only an in running order situation at most at two used one-way cylinders, with a three position four-way directional control valve (meta function: H) can replace the effect of three solenoid directional control valves in the prior art, oil circuit is greatly simplified, and electric control circuit is simplified thereupon.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the utility model hydraulic control schematic diagram.

The number in the figure explanation

100. ERW

20. body 201,202. guide wheels

30. annular cutter head 40. support bars 50. support rollers

1. oil filter 2. oil pumps and drive motors 3. overflow valves

4. Pressure gauge 5. 3-position 4-way solenoid directional control valves

6. hydraulic control one-way valve 7. Pressure gauges 8. accumulators

9. withdrawing oil cylinder 10. feed oil cylinders

11,11 ', 11 ". fuel tank

Specific embodiments

As shown in Figure 1 and Figure 2, fluid pressure type ERW of the present utility model removes the internal hair thorn device, comprises body 20, and the support bar 40 that two guide wheels, 201,202, one ends are installed an annular cutter head 30 and connected a support roller 50 is set on it; Hydraulic control, two one-

way cylinders

9,10 and the oil pump 2 that links to each other successively and drive motors, oil filter 1, fuel tank 11 and overflow valve 3,3-position 4-way solenoid directional control valve 5, accumulator 8, hydraulic control one-way valve 6, Pressure gauge 7; The meta function of this reversal valve is H, and the A of 3-position 4-way solenoid directional control valve, B two ends are connected with two one-

way cylinders

9,10 respectively, and the P end links to each other with fuel tank 11 with oil pump 2 and drive motors, and the T end is connected with fuel tank 11 '; This hydraulic control one-way valve 6 is serially connected with in the oil supply loop of an one-way cylinder 10 wherein, and accumulator 8, Pressure gauge 7 are arranged in this oil supply loop; Overflow valve 3, Pressure gauge 4 are arranged in the oil supply loop of 5 of oil pump 2 and reversal valves, the other end of overflow valve 3 and fuel tank 11 " link to each other.

Its operation principle is:

When need are removed inner wall of welded pipe burr feed work, the right side electromagnetic actuation of 3-position 4-way solenoid directional control valve 5, P and B conducting, T and A conducting, pressure oil from P → B through hydraulic control one-way valve 6 to accumulator 8 and one-way cylinder 10 fuel feeding, make one-way cylinder 10 in running order, promoting body 20 rises, realization feed action, the annular cutter head 30 of body 20 1 ends is removed welded tube 100 inwall burrs, and this moment, one-way cylinder 9 was in off position.

When the removal burr is finished, when 3-position 4-way solenoid directional control valve 5 right side electromagnet discharge, because the effect of hydraulic control one-way valve 6 and accumulator 8 makes one-way cylinder 10 still in running order (pressurize), and oil pump 2 is in unloading condition (energy-conservation), when the electromagnetic actuation of left side, P and A conducting, T and B conducting, pressure oil to one-way cylinder 9 fuel feeding, make one-way cylinder 9 in running order from P → A, pushing tow body 20 descends, and the annular cutter head 30 of body 20 1 ends breaks away from removes welded tube 100 inwalls; Pressure oil is opened hydraulic control one-way valve 6 simultaneously, thereby makes the pressure oil in accumulator 8 and the one-way cylinder 10 flow back to fuel tank 11 from B → T, makes one-way cylinder 10 return back to off position.When the left side electromagnet discharged, one-

way cylinder

9,10 all was in off position.

In sum, when the right side electromagnet from adhesive when discharging, oil cylinder 9 is not worked, oil cylinder 10 work; And when the left side electromagnet from adhesive when discharging,

oil cylinder

9,10 is not all worked.

This device is used for high-frequency straight seam welded pipe and produces the burr that inwall generated when online removal welded tube welded on the unit, and hydraulic system and electrical control thereof become simple and convenient, adapts to the production operation scene and uses.

Claims

1. the fluid pressure type ERW removes the internal hair thorn device, comprises

Body is provided with two guide wheels on it, the support bar that an end is installed an annular cutter head and connected a support roller;

Hydraulic control comprises two one-way cylinders and the oil pump and drive motors, oil filter, fuel tank and the overflow valve that link to each other successively; It is characterized in that,

Described hydraulic control also comprises a 3-position 4-way solenoid directional control valve, the meta function of this reversal valve is H, the A of 3-position 4-way solenoid directional control valve, B two ends are connected with two one-way cylinders respectively, and the P end links to each other with fuel tank with oil pump and drive motors, and the T end is connected with fuel tank.

2. fluid pressure type ERW as claimed in claim 1 removes the internal hair thorn device, it is characterized in that, described hydraulic control also comprises accumulator, hydraulic control one-way valve, Pressure gauge; This hydraulic control one-way valve is serially connected with in the oil supply loop of an one-way cylinder wherein, and accumulator, Pressure gauge are arranged in this oil supply loop.