CN203241231U - Combined vibration damping device of screw drilling tool machine complete set test bed - Google Patents

Combined vibration damping device of screw drilling tool machine complete set test bed Download PDF

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Publication number
CN203241231U
CN203241231U CN 201320272974 CN201320272974U CN203241231U CN 203241231 U CN203241231 U CN 203241231U CN 201320272974 CN201320272974 CN 201320272974 CN 201320272974 U CN201320272974 U CN 201320272974U CN 203241231 U CN203241231 U CN 203241231U
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China
Prior art keywords
clamping system
system base
base
hydraulic motor
helicoid hydraulic
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Withdrawn - After Issue
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CN 201320272974
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Chinese (zh)
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宫兆玲
孙伟
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DEZHOU UNITED PETROLEUM MACHINERY Co Ltd
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DEZHOU UNITED PETROLEUM MACHINERY Co Ltd
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Abstract

A combined vibration damping device of a screw drilling tool machine complete set test bed comprises a vibration damping base; the vibration damping base comprises a loading system base, a first clamping system base and a second clamping system base; the loading system base is rigidly mounted on an equipment foundation; the first clamping system base and the second clamping system base are connected with each other through bolts so as to form one entity and are mounted on the equipment foundation through a rubber vibration damping block; a 30-degree-to-50-degree interval is arranged between the loading system base and the clamping system bases; a plurality of cube cavities with the same size are respectively arranged inside the first clamping system base and the second clamping system base; the volume of each cube cavity is from 0.1 to 0.2 cubic meters; the plurality of cube cavities are filled with discrete counterweight sands with the filling rate from 80% to 90%; and the weight of the counterweight sands accounts for 25% to 35% of the total weight of overall equipment. The combined vibration damping device is advantageous in resonance suppression and accurate test in a test process, and no impact on use precision of surrounding work equipment.

Description

The combination vibration absorber of helicoid hydraulic motor complete machine test stand
Technical field
The utility model relates to helicoid hydraulic motor complete machine test stand technical field, the especially damping technology of helicoid hydraulic motor complete machine test stand.
Background technology
The helicoid hydraulic motor complete machine test stand is that helicoid hydraulic motor integral body is inputted, the Special testing device that output performance detects, it is comprised of testing table main frame, the circulation system and TT﹠C system and power system etc., realize in the helicoid hydraulic motor process of the test, turning round hard iron loads, circular flow is regulated, and gathers the data such as moment of torsion, rotating speed, pressure reduction, flow, temperature, performance parameter form and the family curve of output screw drilling tool.
Wherein the testing table main frame mainly realize drilling tool installation, be installed and support and the output of the loading of helicoid hydraulic motor output terminal and torque, rotating speed.
The testing table main frame vibration in the helicoid hydraulic motor test process of existing helicoid hydraulic motor testing table is large, is contained in instrument and meter on the testing table because the impact of vibration, and the test data fluctuation is large, inaccurate.The while testing table adopts with the basis and is rigidly connected, and makes vibration very large to environmental impact on every side.The service precision of some equipment of having worked around especially having affected.
The utility model content
In order to overcome above-mentioned shortcoming, the purpose of this utility model is to provide a kind of combination vibration absorber of helicoid hydraulic motor complete machine test stand, so that helicoid hydraulic motor in process of the test, suppresses resonance, improves the serviceable life of equipment; Instrument and meter and focus separate, and test accurately; Helicoid hydraulic motor testing table main frame and surrounding environment are kept apart, and do not affect the service precision of working equipment on every side.
The combination vibration absorber of this helicoid hydraulic motor complete machine test stand, helicoid hydraulic motor complete machine test stand mainly comprise loading system, the first clamping system, the second clamping system; Described loading system comprises dynamometer machine, rotating speed, torque sensor, minute water assembly; It is characterized in that: this combination vibration absorber comprises damping base;
Described damping base comprises be used to the loading system base that is fixedly mounted with loading system, for the first clamping system base that is fixedly mounted with the first clamping system, for the second clamping system base that is fixedly mounted with the second clamping system;
Described loading system base is installed on the equipment Foundations by foot bolt and adjustment parallels rigidity;
Described the first clamping system base and the second clamping system base are connected as a single entity by bolt and are designated as the clamping system base; Described clamping system base is installed on the basis of equipment by the rubber damping piece;
Be provided with the interval of 30-50mm between described loading system base and the clamping system base;
A plurality of equal-sized cube cavitys are set respectively in described the first clamping system base, the second clamping system base, and the volume of each cube cavity is the 0.1-0.2 cubic meter; And the counterweight sand of discrete type is housed in each cube cavity, and the filling rate of counterweight sand is 80%-90% in each cube cavity, and the weight of counterweight sand accounts for 25～35% of integral device gross weight.
Further: the iron sand that described counterweight sand is plurality of specifications is mixed and forms, and the specification limit of multiple iron sand is 0.2-2mm, and iron sand density is 6.8-7.2 ton/cubic meter; The heap of the counterweight sand after being mixed heavily is 4.8-5.2 ton/cubic meter.
Further: described loading system base, clamping system base all adopt the thick Plate Welding of 30-35mm to form.
The beneficial effects of the utility model are:
1, combination vibration absorber of the present utility model so that testing table in test during helicoid hydraulic motor, test data accurately, reliable, reached the measuring accuracy of test instrumentation.
2, the application of rubber damping piece has reduced noise so that the vibration that produces in the helicoid hydraulic motor process of the test and mud pulsation-induced vibration and experimental basis isolation have prevented the impact of vibration to ground, has alleviated the impact on surrounding environment.
3, metal material is saved in the application of high specific gravity counterweight iron sand, reduces manufacturing cost, reduces equipment center, improves the stability of equipment.
4, the application of high specific gravity counterweight iron sand is passed through between the particle and the relative motion between particle and the cavity inner wall simultaneously, increases frictional resistance, consumes vibrational energy, suppresses resonance, the raising service life of equipment.
Description of drawings
Fig. 1 is the structural representation of the combination vibration absorber of the utility model helicoid hydraulic motor complete machine test stand,
Fig. 2 is the A-A amplification view of Fig. 1;
Fig. 3 is the effectiveness in vibration suppression curve comparison figure of the combination vibration absorber of helicoid hydraulic motor complete machine test stand in the utility model;
Among the figure: 1 adjusts parallels, 2 loading systems, 3 torque speed sensors, 4 loading system bases, 5 first clamping systems, 6 first clamping system bases, 7 bolts, 8 second clamping system bases, 9 second clamping systems, 10 rubber damping pieces, 11 counterweight sand, 12 helicoid hydraulic motors.
Embodiment
The helicoid hydraulic motor test-bed is mainly used to test helicoid hydraulic motor 12.
Helicoid hydraulic motor performance test ultimate principle: inflow helicoid hydraulic motor circulating fluid volumetric flow rate is kept under the prerequisite of a certain set-point, by applying different torque loads at the helicoid hydraulic motor clutch end, make drilling tool steady operation under different braking torques, test out the output torque T of drilling tool under different operating modes, output speed n, circular flow Q1, drilling tool inlet pressure p1, the parameters such as top hole pressure p2 are through drawing performance parameter form and the family curve of helicoid hydraulic motor after the data processing.
The helicoid hydraulic motor test macro mainly by: power system, the circulation system, testing table main frame, hydraulic system, TT﹠C system etc. partly form.
Be the chief component of helicoid hydraulic motor testing table main frame as shown in Figure 1, comprise loading system 2, the first clamping systems 5, the second clamping systems 9.
Helicoid hydraulic motor testing table main frame mainly realize helicoid hydraulic motor installation, be installed and support and the output of the loading of helicoid hydraulic motor output terminal and torque, rotating speed.
During test helicoid hydraulic motor 12, helicoid hydraulic motor is contained on the testing table main frame first, helicoid hydraulic motor one end links to each other with the main shaft of loading system by crossover sub, and an end links to each other with the helicoid hydraulic motor circulation system by high-pressure rubber pipe, and by drilling tool fixed mechanism, hydraulic system drilling tool is tightened.
To helicoid hydraulic motor conveying high-pressure liquid, helicoid hydraulic motor is under the effect of highly pressurised liquid by power system and the circulation system, and the rotor of screw motor is done planetary motion in stator case, thereby produces centrifugal intertia force, the size of centrifugal intertia force: Fg=mN 2w 2From e,
Square being directly proportional of centrifugal intertia force Fg and rotor head number.So the rotor head number is more, centrifugal intertia force increases sharply.Square being directly proportional of Fg and rotational velocity simultaneously is so when discharge capacity increases, understand because of the increase of drilling tool rotating speed and cause centrifugal force to increase sharply.
Centrifugal intertia force is by the architectural characteristic decision of screw motor itself, and centrifugal intertia force causes the transverse vibration of helicoid hydraulic motor, mainly is the transverse vibration of shell body.
Centrifugal intertia force has its favourable one side in the helicoid hydraulic motor drilling process, disadvantageous one side is also arranged.When favourable one side can prevent horizontal well drilling, form mud cake in surface of drill stem, disadvantageous one side it can make rotor press to stator, destroyed the theory engagement situation of rotor and stator.
If the power source of circulating fluid is three cylinder pump or five cylinder pumps, because pump characteristics is not so that circulating fluid is continuous wave output, but be interrupted output, thereby the fluctuation that produces circulating fluid.And this fluctuation also is one of focus that causes drill string vibration.When circulating fluid is flowed through screw motor simultaneously, the disturbance that the reason that designs or make owing to passage section also can produce liquid stream.Thereby aggravated the intensity of vibration.And all these vibrations finally can act on the testing equipment, affect the serviceable life of equipment and the precision of device measuring, produce noise, and are very large to surrounding environment influence.
And the shell body of clamping system clamping helicoid hydraulic motor is the critical piece that bears vibration.And the rotating speed of the drill spindle that is connected with loading system is the rotation rotating speed of rotor, and rotating speed is not high, 200 turn in, and be the dead axle rotating speed, so the vibration that produces is very little.
The vibration that produces when testing for fear of helicoid hydraulic motor has been adopted the combination vibration absorber of this helicoid hydraulic motor complete machine test stand to the impact of test apparatus.
The combination vibration absorber of this helicoid hydraulic motor complete machine test stand comprises damping base; This damping base comprises be used to the loading system base 4 that is fixedly mounted with loading system, for the first clamping system base 6 that is fixedly mounted with the first clamping system 5, for the second clamping system base 8 that is fixedly mounted with the second clamping system 9; Described the first clamping system base 6 and the second clamping system base 8 are connected as a single entity by bolt 7 and are designated as the clamping system base; During installation, loading system base 4 and clamping system base are separated, between the gap of 30-50mm is arranged.Owing to surveying instrument being installed: torque speed sensor 3 on the loading system base 4; Like this can be so that the vibration that helicoid hydraulic motor produces be loading measurement mechanism on vibration source and the loading system base 4 keeps apart, the clamping system base passes to loading system base 4 with vibration when avoiding the helicoid hydraulic motor test, thereby causes that moment of torsion rotating speed device 3 is forbidden.
During installation, described loading system base 4 is installed on the equipment Foundations by foot bolt and adjustment parallels 1 rigidity, guarantees the stability of whole loading system and measuring system.
In order to solve the problem of transmission of vibration.Described the first clamping system base 6, the second clamping system base 8 are installed on the basis of equipment by rubber damping piece 10; This rubber damping piece 10 effectively will vibrate with base isolation on every side and come, and play separating vibration, prevent from impacting and falling low noise effect.
For fear of or alleviate testing equipment and tested helicoid hydraulic motor and produce resonance, strengthen the Rigidity and strength of equipment, ingehious design the damping base of testing table.
As shown in Figure 2, a plurality of equal-sized cube cavitys are set respectively the first clamping system base 6, the second clamping system base 8 are interior, the volume of each cube cavity is the 0.1-0.2 cubic meter; And the counterweight sand 11 of discrete type is housed in each cube cavity, and the filling rate of counterweight sand 11 is 80%-90% in each cube cavity, and the weight of counterweight sand accounts for 25～35% of integral device gross weight.This counterweight sand not only plays increases base weight, and the effect that lowers the center of gravity, improves stabilization of equipment performance is passed through between the particle and the relative motion between particle and the cavity inner wall simultaneously, can increase frictional resistance, consume vibrational energy, play the effect of suppression equipment resonance, do not produce again noise.
Loading system base 4, the first clamping system base 6, the second clamping system base 8 all form with the thick Plate Welding of 30-35mm, and the base postwelding for preventing from being out of shape and vibrating the stress cracking that causes, adopts the postwelding stress relief annealing.And annealing afterwards main connecting surface process the assembly precision of the equipment that guarantees.
Before the device assembles, fill counterweight sand 11, after counterweight sand 11 is filled, seal.
Further, counterweight sand 11 is wherein selected is that specification is that the iron sand of the plurality of specifications of 0.2-2mm is mixed and forms, and iron sand density is 6.8-7.2 ton/m3, and the heap of the counterweight sand of the rear formation that is mixed heavily is 4.8-5.2 ton/m3.Iron sand by different size is mixed and forms counterweight sand, can increase the cavity utilization factor, and particle is fully contacted, and reaches the weight that increases base, saves metal material, reduces manufacturing cost, reduces equipment center, improves the stability of equipment, increases the effect of frictional resistance.
After adopting this composite set, effectiveness in vibration suppression as shown in Figure 3, test point 1, test point 2, test point 3, test point 4, test point 5 are respectively the location point of the first clamp in the clamping system, the second clamp, the 3rd clamp, the 4th clamp and the location point of loading system base among the figure.By contrast test and measurement: there is the testing table successful of combination vibration absorber better than the testing table that does not add this device.

Claims (3)

1. the combination vibration absorber of helicoid hydraulic motor complete machine test stand, the helicoid hydraulic motor complete machine test stand comprises loading system, the first clamping system, the second clamping system; Described loading system comprises dynamometer machine, rotating speed, torque sensor, minute water assembly; It is characterized in that: this combination vibration absorber comprises damping base;
Described damping base comprises be used to the loading system base that is fixedly mounted with loading system, for the first clamping system base that is fixedly mounted with the first clamping system, for the second clamping system base that is fixedly mounted with the second clamping system;
Described loading system base is installed on the equipment Foundations by foot bolt and adjustment parallels rigidity;
Described the first clamping system base and the second clamping system base are connected as a single entity by bolt and are designated as the clamping system base; Described clamping system base is installed on the basis of equipment by the rubber damping piece;
Be provided with the interval of 30-50mm between described loading system base and the clamping system base;
A plurality of equal-sized cube cavitys are set respectively in described the first clamping system base, the second clamping system base, and the volume of each cube cavity is the 0.1-0.2 cubic meter; And the counterweight sand of discrete type is housed in each cube cavity, and the filling rate of counterweight sand is 80%-90% in each cube cavity, and the weight of counterweight sand accounts for 25～35% of integral device gross weight.
2. the combination vibration absorber of helicoid hydraulic motor complete machine test stand according to claim 1, it is characterized in that: the iron sand that described counterweight sand is plurality of specifications is mixed and forms, and the specification limit of multiple iron sand is 0.2-2mm, and iron sand density is 6.8-7.2 ton/cubic meter; The heap of the counterweight sand after being mixed heavily is 4.8-5.2 ton/cubic meter.
3. the combination vibration absorber of helicoid hydraulic motor complete machine test stand according to claim 1 and 2, it is characterized in that: described loading system base, clamping system base all adopt the thick Plate Welding of 30-35mm to form.
CN 201320272974 2013-05-17 2013-05-17 Combined vibration damping device of screw drilling tool machine complete set test bed Withdrawn - After Issue CN203241231U (en)

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