CN204344550U - A kind of pull and torsion test actuator - Google Patents

A kind of pull and torsion test actuator Download PDF

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Publication number
CN204344550U
CN204344550U CN201420781771.4U CN201420781771U CN204344550U CN 204344550 U CN204344550 U CN 204344550U CN 201420781771 U CN201420781771 U CN 201420781771U CN 204344550 U CN204344550 U CN 204344550U
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CN
China
Prior art keywords
cylinder
oil hydraulic
tension
hydraulic cylinder
torsion
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CN201420781771.4U
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Chinese (zh)
Inventor
陈淑平
曹发胜
陈庆童
虞路长
占胜梅
陆京生
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中国直升机设计研究所
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Priority to CN201420781771.4U priority Critical patent/CN204344550U/en
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Publication of CN204344550U publication Critical patent/CN204344550U/en

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Abstract

The utility model provides a kind of pull and torsion test actuator, comprise tension and compression oil hydraulic cylinder (4), reverse oil hydraulic cylinder (9), servovalve mechanism, flange plate (16) and the piston rod (5) be fixed on flange plate, wherein, tension and compression oil hydraulic cylinder (4) connects torsion oil hydraulic cylinder (9), and cylinder body is hollow circuit cylinder body structure, piston rod (5) on flange plate stretches into two oil hydraulic cylinders inside by cylinder cap and is fixed in two oil hydraulic cylinders, tension-torsion system passes through the in-house electrohydraulic control element of servovalve, by the tension-torsion information of Loading Control System according to tension-torsion sensor (17), it is controlled, while applying pressure, meet the loading requirement of moment of torsion arbitrarily in range ability, simplify test fixture and test installation simultaneously, effectively raise test accuracy.

Description

A kind of pull and torsion test actuator

Technical field

The utility model relates to helicopter static test technical field.

Background technique

Helicopter rotor system parts such as blade, flexible beam etc. both bore pulling force in flight course, bore torsional load again, and whether its tension-torsion bearing capacity meets design requirement direct relation helicopter flight safety.At present, helicopter rotor system parts almost all adopt composite material, because composite material stressing conditions is complicated, traditional theoretical calculation method is adopted to be difficult to accurately obtain the tension-torsion bearing capacity of each parts of rotor, therefore, determine that this performance parameter is a requisite link in helicopter rotor system development process by test method.Helicopter component pull and torsion test is generally completed by electronic type pressure torsional test machine, although the method is installed simple, has the following disadvantages: 1, strict to the size requirement of test specimen, General Requirements piece lengths is less than 1m; 2, means of fixation is loaded to test specimen and have strict restriction, require that test specimen can only adopt end winding support mode.

Certain type tail oar flexible beam tension-torsion load carrying capacity test requires that test specimen middle section is clamped, applies axial force and appoint to get one end and apply moment of torsion simultaneously at test specimen two ends.There are above 2 deficiencies in conjunction with electronic type pressure torsional test machine, the type test cannot press torsional test machine to complete by electronic type, and hydraulic servo actuator can only be used.Conventional hydraulic servo actuator directly cannot apply moment of torsion, must by combinationally using two actuator and having come by special reverse plate, exist test install complicated, cannot the shortcoming such as proof test precision.

Model utility content

For the above technical problem existed, the utility model proposes a kind of pull and torsion test actuator that simultaneously can apply pressure and moment of torsion, short form test fixture and test installation, improve test accuracy simultaneously.

The utility model pull and torsion test actuator, the piston rod comprise tension and compression oil hydraulic cylinder, reversing oil hydraulic cylinder, servovalve mechanism, flange plate and be fixed on flange plate, wherein, tension and compression oil hydraulic cylinder rear end connects cylinder bottom, front end connects reverses oil hydraulic cylinder, reverse the oil hydraulic cylinder the other end and be fixed with cylinder cap, between tension and compression oil hydraulic cylinder, torsion oil hydraulic cylinder and cylinder body, coupling mechanism is hollow circuit cylinder body structure, and the piston rod on flange plate stretches into two oil hydraulic cylinders inside by cylinder cap and is fixed on drawing on pressure cylinder piston and reversing on the torsion cylinder piston in oil hydraulic cylinder in tension and compression oil hydraulic cylinder;

Described servovalve mechanism comprises and is fixed on above cylinder cap, for providing the front-end servo valve system of warping force to the piston rod reversed in oil hydraulic cylinder, and is fixed on above cylinder bottom for providing the rear end servovalve mechanism of pressure to the piston rod in tension and compression oil hydraulic cylinder;

One end of tension-torsion sensor is connected with flange plate by rear end flange connecting assembly, the other end connects front end engaging lug fork by front end flange connection part, tension and compression are responded to feedback unit with reversing and are responded to feedback unit and combine by tension-torsion sensor, Loading Control System is connected by passage feedback conductor, servovalve is in-house is provided with electrohydraulic control element, connects described Loading Control System by passage pilot.

Preferably, tension and compression oil hydraulic cylinder is connected by coupling mechanism between cylinder body and reverses oil hydraulic cylinder, wherein, tension and compression oil hydraulic cylinder with is connected torsion oil hydraulic cylinder and is connected with coupling mechanism bolt between cylinder body respectively.

In above-mentioned either a program preferably, tension and compression oil hydraulic cylinder is connected with cylinder bottom bolt, and cylinder bottom rear end is fixed with rear end engaging lug fork.

In above-mentioned either a program preferably, rear end servomechanism comprises rear end servovalve transfer block, and be positioned at rear end servovalve above the servovalve transfer block of rear end, the rear end oil filter in front, the rear end oil connection on right side, in like manner, front-end servo mechanism comprises front-end servo valve transfer block, and is positioned at front-end servo valve above front-end servo valve transfer block, the front end oil filter in front, the front end oil connection on right side; Tension and compression are connected with rear end oil connection, front end oil connection respectively to the turnover oil pipe of twisting pathway, draw the motion of pressure cylinder piston and torsion cylinder piston both direction all to be realized by hydraulic oil.

In above-mentioned either a program preferably, described tension and compression oil hydraulic cylinder and torsion oil hydraulic cylinder inside, at cylinder barrel and cylinder bottom, piston and piston rod, piston and cylinder barrel, be provided with seal arrangement between piston rod and cylinder cap, tension and compression oil hydraulic cylinder and torsion cylinder ends are provided with damping device; Outside cylinder cap, dust guard is housed.

In above-mentioned either a program preferably, the radius of described piston is less than the inside radius of coupling mechanism between cylinder body, makes piston remain on tension and compression oil hydraulic cylinder internal motion.

The utility model key point is:

1, tension and compression oil hydraulic cylinder and torsion oil hydraulic cylinder are combined in an actuator, pulling force and moment of torsion can be applied simultaneously;

2, tension and compression responded to feedback unit with reversing and respond to feedback unit and be combined in a sensor, can respond to simultaneously, feed back and pull to and torsional load.

The beneficial effects of the utility model: this tension-torsion actuator configurations is compact, arrangement is reasonable, is easy to install; Two oil hydraulic cylinders adopt independently control unit, pull to and adopt independently passage to control with torsional load, facilitate independent or synchronous imposed load, and each several part working stability, without mutually interfering.

Accompanying drawing explanation

Fig. 1 is the structural representation of the preferred embodiment according to the utility model pull and torsion test actuator.

Fig. 2 is plan view embodiment illustrated in fig. 1.

Fig. 3 is tension and compression hydraulic cylinder body embodiment illustrated in fig. 1 and piston assembly structure schematic diagram.

Fig. 4 is torsion hydraulic cylinder body embodiment illustrated in fig. 1 and piston assembly structure schematic diagram.

Fig. 5 is scheme of installation embodiment illustrated in fig. 1.

Fig. 6 is flange plate embodiment illustrated in fig. 1 and tension-torsion sensor connection diagram.

Wherein, 1 is rear end engaging lug fork, 2 is cylinder bottom, 3a is rear end servovalve, 3b is rear end oil filter, 3c is rear end servovalve transfer block, 3d is rear end oil connection, 4 is tension and compression oil hydraulic cylinder, 5 is tension and compression cylinder piston rod, 6 for drawing pressure cylinder piston, 7 is rear end joint bolt, 8 is coupling mechanism between cylinder body, 9 for reversing oil hydraulic cylinder, 10 for reversing cylinder piston, 11 is connection part, 11a is rear end flange connecting assembly, 11b is front end flange connection part, 12 is rotating sleeve, 13 is joint bolt between cylinder body, 14a is front-end servo valve, 14b is front end oil filter, 14c is front-end servo valve transfer block, 14d is front end oil connection, 15 is cylinder cap, 16 is flange plate, 17 is tension-torsion sensor, 18 is front end engaging lug fork, 19 is test-bed, 20 is rear end fixed ear base, 21 is front end connection ear base, 22 is test specimen.

Embodiment

Below in conjunction with accompanying drawing, the pull and torsion test actuator involved by the utility model is described in further details.

As Fig. 1, shown in Fig. 2 and Fig. 5, a kind of pull and torsion test actuator, comprise tension and compression oil hydraulic cylinder 4, reverse oil hydraulic cylinder 9, servovalve mechanism, flange plate 16 and the piston rod 5 be fixed on flange plate, wherein, tension and compression oil hydraulic cylinder 4 rear end connects cylinder bottom 2, front end connects reverses oil hydraulic cylinder 9, reverse oil hydraulic cylinder 9 the other end and be fixed with cylinder cap 15, tension and compression oil hydraulic cylinder 4, reversing coupling mechanism 8 between oil hydraulic cylinder 9 and cylinder body is hollow circuit cylinder body structure, piston rod 5 on flange plate stretches into two oil hydraulic cylinders inside by cylinder cap and is fixed on drawing on pressure cylinder piston 6 and reversing on the torsion cylinder piston 10 in oil hydraulic cylinder 9 in tension and compression oil hydraulic cylinder 4,

Described servovalve mechanism comprises and is fixed on above cylinder cap 15, for providing the front-end servo valve system 14 of warping force to the piston rod 5 reversed in oil hydraulic cylinder, and be fixed on above cylinder bottom 2 for providing the rear end servovalve mechanism 3 of pressure to the piston rod 5 in tension and compression oil hydraulic cylinder;

On connection part, 11 are provided with tension-torsion sensor 17, concrete, one end of tension-torsion sensor 17 is connected with flange plate 16 by rear end flange connecting assembly 11a, the other end connects front end engaging lug fork 18 by front end flange connection part 11b, tension and compression are responded to feedback unit with reversing and are responded to feedback unit and combine by tension-torsion sensor 17, connect Loading Control System by passage feedback conductor, servovalve is in-house is provided with electrohydraulic control element, connects described Loading Control System by passage pilot.

Tension and compression oil hydraulic cylinder 4 is connected by coupling mechanism 8 between cylinder body and reverses oil hydraulic cylinder 9, wherein, tension and compression oil hydraulic cylinder 4 with is connected torsion oil hydraulic cylinder 9 and is connected with coupling mechanism between cylinder body 8 bolt respectively, be spirally connected as joint bolt 13 between the cylinder body in Fig. 1.

Tension and compression oil hydraulic cylinder 4 is connected with cylinder bottom 2 bolt, and cylinder bottom 2 rear end is fixed with rear end engaging lug fork 1, is spirally connected as the rear end joint bolt 7 in Fig. 1.

Rear end servomechanism 3 comprises rear end servovalve transfer block 3c, and the rear end servovalve 3a, the rear end oil filter 3b in front, the rear end oil connection 3d on right side that are positioned at above the servovalve transfer block 3c of rear end, in like manner, front-end servo mechanism 14 comprises front-end servo valve transfer block 14c, and is positioned at front-end servo valve 14a, the front end oil filter 14b in front, the front end oil connection 14d on right side above front-end servo valve transfer block 14c; Described rear end servovalve device is tension and compression electrohydraulic control element; Described front-end servo control valve unit is for reversing electrohydraulic control element; Described tension and compression oil hydraulic cylinder adopts flange-type Connecting format to be linked together by two cylinder bodies with torsion oil hydraulic cylinder; Tension and compression are responded to feedback unit with reversing and are responded to feedback unit and be combined in a sensor by described tension-torsion sensor, can respond to simultaneously, feed back tension and compression to and torsional load.

During test, as shown in Figure 5, described pull and torsion test actuator rear end engaging lug fork 1 is fixed on the rear end fixed ear base 20 of the load wall of test stand 19, front end engaging lug fork 18 and front end engaging lug seat 21, the assemblies such as bolt are connected with by test specimen, pull and torsion test is carried out to testpieces 22, tension and compression are connected rear end servovalve 3a respectively to twisting pathway pilot, the joint of front-end servo valve 14a, tension and compression to the tension and compression being connected tension-torsion sensor respectively with twisting pathway feedback conductor to, reverse conversion adapter, tension and compression to the turnover oil pipe with twisting pathway respectively at rear, front end oil connection connects, Loading Control System carries out synchronous control in real time to pulling to and reverse control channel.Tension and compression are connected with rear end oil connection 3d, front end oil connection 14d respectively to the turnover oil pipe of twisting pathway, draw the motion of pressure cylinder piston 6 and torsion cylinder piston 10 both direction all to be realized by hydraulic oil.

Described tension and compression oil hydraulic cylinder 4 and torsion oil hydraulic cylinder 9 are by major component compositions such as end cap, cylinder barrel, piston rod, piston assemblys, tension and compression oil hydraulic cylinder 4 and torsion oil hydraulic cylinder 9 inside, at cylinder barrel and cylinder bottom 2, piston 6 and piston rod 5, piston 5 and cylinder barrel, be provided with seal arrangement between piston rod 6 and cylinder cap 15, tension and compression oil hydraulic cylinder 4 and torsion oil hydraulic cylinder 9 end are provided with damping device; Outside cylinder cap 15, dust guard is housed.

The radius of described piston 6 is less than the inside radius of coupling mechanism 8 between cylinder body, makes piston 6 remain on tension and compression oil hydraulic cylinder 4 internal motion.

As shown in Figure 4, when passing through to reverse oil hydraulic cylinder to when being applied moment of torsion by test specimen, reverse cylinder piston 10 and rotate by action of hydraulic force, this rotary motion is exported by rotating sleeve 12 and flange plate 16;

As shown in Figure 3, described tension and compression oil hydraulic cylinder can apply pull to and press to load to by test specimen, and ouput force size is 0 ~ 50T, can regulate arbitrarily in scope;

Described torsion oil hydraulic cylinder can apply torque load to by the output shaft of test specimen, torque range is 0 ~ 2000N.m, the direction-agile (namely can export the load of 0 ~ 2000N.m with counter clockwise direction clockwise) of moment of torsion, and can regulate arbitrarily in scope; Pull and torsion test actuator means of fixation is that cylinder barrel is fixed, and piston and piston rod are moving element, and in this device, piston rod can rotate while straight line motion, reciprocating effective travel is positive and negative 180 ° for drawing pressure cylinder piston effective travel L, slewing area.

Tension and compression oil hydraulic cylinder and torsion oil hydraulic cylinder are combined in an actuator, and are controlled respectively by two servovalves, both can ensure to apply pulling force and moment of torsion simultaneously, farthest avoid mechanical interferences again.This pull and torsion test actuator can realize positive and negative 180 ° and freely rotate, and moment of torsion loading error is little, effectively can improve test accuracy; While applying pressure, the loading requirement of moment of torsion arbitrarily in range ability can be met, simplify test fixture and test installation simultaneously; To sample dimensions and means of fixation without any restrictions, helicopter each parts tension-torsion can well be applied to or purely turn round load carrying capacity test.

It should be noted that; the utility model pull and torsion test actuator includes but not limited to above-described embodiment; it should be apparent to those skilled in the art that; under the prerequisite not departing from spirit and scope defined by the claims, various changes and modifications are carried out to above-described embodiment and all should fall in the utility model scope required for protection.

Claims (6)

1. a pull and torsion test actuator, it is characterized in that: comprise tension and compression oil hydraulic cylinder (4), reverse oil hydraulic cylinder (9), servovalve mechanism, flange plate (16) and the piston rod (5) be fixed on flange plate, wherein, tension and compression oil hydraulic cylinder (4) rear end connects cylinder bottom (2), front end connects reverses oil hydraulic cylinder (9), reverse oil hydraulic cylinder (9) the other end and be fixed with cylinder cap (15), tension and compression oil hydraulic cylinder (4), reversing coupling mechanism (8) between oil hydraulic cylinder (9) and cylinder body is hollow circuit cylinder body structure, piston rod (5) on flange plate stretches into two oil hydraulic cylinders inside by cylinder cap and is fixed on drawing on pressure cylinder piston (6) and reversing on the torsion cylinder piston (10) in oil hydraulic cylinder (9) in tension and compression oil hydraulic cylinder (4),
Described servovalve mechanism comprise be fixed on cylinder cap (15) top, for providing the front-end servo valve system (14) of warping force to the piston rod (5) reversed in oil hydraulic cylinder, and be fixed on cylinder bottom (2) top for providing the rear end servovalve mechanism (3) of pressure to the piston rod (5) in tension and compression oil hydraulic cylinder;
One end of tension-torsion sensor (17) is connected with flange plate (16) by rear end flange connecting assembly (11a), the other end connects front end engaging lug fork (18) by front end flange connection part (11b), tension and compression are responded to feedback unit with reversing and are responded to feedback unit and combine by tension-torsion sensor (17), Loading Control System is connected by passage feedback conductor, servovalve is in-house is provided with electrohydraulic control element, connects described Loading Control System by passage pilot.
2. pull and torsion test actuator according to claim 1, it is characterized in that: tension and compression oil hydraulic cylinder (4) connects torsion oil hydraulic cylinder (9) by coupling mechanism between cylinder body (8), wherein, tension and compression oil hydraulic cylinder (4) be connected reverse oil hydraulic cylinder (9) be connected with coupling mechanism between cylinder body (8) bolt respectively.
3. pull and torsion test actuator according to claim 1, is characterized in that: tension and compression oil hydraulic cylinder (4) is connected with cylinder bottom (2) bolt, and cylinder bottom (2) rear end is fixed with rear end engaging lug fork (1).
4. pull and torsion test actuator according to claim 1, it is characterized in that: rear end servomechanism (3) comprises rear end servovalve transfer block (3c), and be positioned at the rear end servovalve (3a) of top, rear end servovalve transfer block (3c), rear end oil filter (3b) in front, the rear end oil connection (3d) on right side, in like manner, front-end servo mechanism (14) comprises front-end servo valve transfer block (14c), and be positioned at the front-end servo valve (14a) of front-end servo valve transfer block (14c) top, front end oil filter (14b) in front, the front end oil connection (14d) on right side, tension and compression are connected with rear end oil connection (3d), front end oil connection (14d) respectively to the turnover oil pipe of twisting pathway, draw the motion of pressure cylinder piston (6) and torsion cylinder piston (10) both direction all to be realized by hydraulic oil.
5. pull and torsion test actuator according to claim 1, it is characterized in that: described tension and compression oil hydraulic cylinder (4) and torsion oil hydraulic cylinder (9) inside, at cylinder barrel and cylinder bottom (2), piston (6) and piston rod (5), piston (5) and cylinder barrel, be provided with seal arrangement between piston rod (6) and cylinder cap (15), tension and compression oil hydraulic cylinder (4) and torsion oil hydraulic cylinder (9) end are provided with damping device; Dust guard is equipped with in cylinder cap (15) outside.
6. pull and torsion test actuator according to claim 1, it is characterized in that: the radius of described piston (6) is less than the inside radius of coupling mechanism between cylinder body (8), make piston (6) remain on tension and compression oil hydraulic cylinder (4) internal motion.
CN201420781771.4U 2014-12-11 2014-12-11 A kind of pull and torsion test actuator CN204344550U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420781771.4U CN204344550U (en) 2014-12-11 2014-12-11 A kind of pull and torsion test actuator

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Application Number Priority Date Filing Date Title
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CN204344550U true CN204344550U (en) 2015-05-20

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106950104A (en) * 2017-03-10 2017-07-14 哈尔滨工业大学 A kind of combined horizontal testing stand and its material performance test method and system
CN107607300A (en) * 2017-08-25 2018-01-19 武汉船用机械有限责任公司 A kind of pull test frock
WO2018019107A1 (en) * 2016-07-25 2018-02-01 东莞前沿技术研究院 Rub test platform
CN108169015A (en) * 2017-12-01 2018-06-15 中国直升机设计研究所 A kind of tail-rotor flexible beam torque load testing machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018019107A1 (en) * 2016-07-25 2018-02-01 东莞前沿技术研究院 Rub test platform
CN106950104A (en) * 2017-03-10 2017-07-14 哈尔滨工业大学 A kind of combined horizontal testing stand and its material performance test method and system
CN107607300A (en) * 2017-08-25 2018-01-19 武汉船用机械有限责任公司 A kind of pull test frock
CN107607300B (en) * 2017-08-25 2019-08-23 武汉船用机械有限责任公司 A kind of pull test tooling
CN108169015A (en) * 2017-12-01 2018-06-15 中国直升机设计研究所 A kind of tail-rotor flexible beam torque load testing machine
CN108169015B (en) * 2017-12-01 2020-06-09 中国直升机设计研究所 Tail rotor flexible beam torque loading test device

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