CN203688373U - Tension compression and torsional vibration fatigue test device - Google Patents
Tension compression and torsional vibration fatigue test device Download PDFInfo
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- CN203688373U CN203688373U CN201320778354.XU CN201320778354U CN203688373U CN 203688373 U CN203688373 U CN 203688373U CN 201320778354 U CN201320778354 U CN 201320778354U CN 203688373 U CN203688373 U CN 203688373U
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Abstract
The utility model discloses a tension compression and torsional vibration fatigue test device, which can be used for finishing tension compression and torsion fatigue test at the same time. The test device comprises a test device rack, a torsion test mechanism and multiple tension compression test mechanisms, wherein in each tension compression test mechanism, a piston rod of a tension compression acting cylinder, a force sensor, a guide rod, an adjusting rod and a tested workpiece are connected end to end in sequence; a plurality of adjusting positions are set on each adjusting rod; each guide rod is connected to a corresponding adjusting position on each adjusting rod according to the size of each tested workpiece; each guide rod moves linearly under the limit of each guide mechanism; in the torsion test mechanism, the rotating ends of bearing revolving mechanisms are connected with the other end of each tested piece; swinging rods in each bearing revolving mechanism are connected in series through a connecting rod mechanism; each swinging rod positioned at one end is further connected with a piston rod of a torsional acting cylinder through one connecting rod mechanism; the tension compression acting cylinders, the bearing revolving mechanisms and the torsional acting cylinder are fixed on the test device rack.
Description
Technical field
The utility model relates to material vibrating torture test technical field, is specifically related to a kind of tension and compression and twisting vibration fatigue experimental device that adopts compound start cylinder to complete tested material.
Background technology
In the time that tested workpiece is carried out to torture test, often require tested workpiece not only to carry out tension and compression vibration fatigue test but also carry out twisting vibration torture test.In prior art, be that these two kinds of torture tests are separately carried out, only complete a kind of torture test of form at every turn.Owing to carrying out the spent time of a torture test long, therefore existing test method relatively wastes time and energy.Be directed to this, the utility model has designed a kind of test unit that can simultaneously complete tension and compression and torsional fatigue test.
Utility model content
In view of this, the utility model provides a kind of tension and compression and twisting vibration fatigue experimental device, can complete tension and compression and torsional fatigue test simultaneously.
This scheme is achieved in that
A kind of tension and compression and twisting vibration fatigue experimental device, comprising: test unit stand, twisting test mechanism and N cover tensile and compression testing machine structure, and N is more than or equal to 2 positive integer;
Every cover tensile and compression testing machine structure comprises tension and compression start cylinder, the first web member, power sensor, the second web member, guiding mechanism, guide rod and adjuster bar; Tension and compression start cylinder is linear motion conversion mechanism, it is arranged on test unit stand, and the piston rod of tension and compression start cylinder is connected with power sensor by the first web member, and power sensor is connected with guide rod by the second web member, guide rod is connected with adjuster bar, and adjuster bar is connected with one end of tested workpiece; Adjuster bar is provided with multiple adjustings position, according to the size of tested workpiece, guide rod is connected on the corresponding adjusting position of adjuster bar; Guiding mechanism is fixed on test unit stand, and guide rod is rectilinear motion under the restriction of guiding mechanism; Tension and compression start cylinder, guide rod, adjuster bar and tested workpiece move on same straight line, and the straight-line trajectory of different tensile and compression testing machine structures is parallel to each other;
Twisting test mechanism comprises: N is with the bearing slew gear of swing arm, a N linkage assembly, torsion start cylinder and for obtaining the sensor of tested workpiece windup-degree; Bearing slew gear is linear motion conversion mechanism, and it is fixed on test unit stand, is applied to for the straight line force that puts on swing arm is converted to the twisting resistance that rotates end, and described rotation end is connected with the other end of tested workpiece; Between swing arm in each bearing slew gear, connect by linkage assembly, the swing arm that is positioned at one end is further connected with the piston rod that reverses start cylinder by a linkage assembly; Reversing start cylinder is fixed on test unit stand by bearing.
The torsional moment being subject in order to obtain tested workpiece, every cover tensile and compression testing machine structure further comprises torque sensor and the 3rd web member, and adjuster bar is connected with torque sensor by the 3rd web member, and torque sensor (11) is connected with one end of tested workpiece.
Wherein, at described guide rod and adjuster bar link, on adjuster bar, design the equally spaced pilot hole of a row, the mounting hole that design coordinates with pilot hole on guide rod, guide rod inserts adjuster bar inside, and mounting hole connects after aiming at selected pilot hole.Preferably, the other end of described adjuster bar is connected with the 3rd web member by screw thread; Adjuster bar can be connected with guide rod by any one pilot hole, by regulating the 3rd web member degree of depth that is threaded with adjuster bar, finely tunes the shared space of tested workpiece.
Beneficial effect:
The test unit that employing the utility model proposes can complete tension and compression and the twisting vibration torture test of tested workpiece simultaneously, can greatly save test period, improves test efficiency.
Secondly, the utility model adopts the compound start cylinder technology being made up of static(al) cylinder and power cylinder, and this start cylinder loads cylinder by a static loading cylinder and a power and forms, and they share a piston rod.Wherein static loading cylinder completes the static loading of tested workpiece, power loads cylinder tested workpiece is applied to cycling alternating load, in the time that the power of static loading cylinder output reaches the steady state value setting, just two chambeies of static loading cylinder are turn-offed, now the pressure in static loading cylinder two chambeies can remain unchanged, even not for it provides hydraulic energy source, static loading power also can remain unchanged, thereby reach the saving energy, reduce the object of heating.
In addition, due to the inside and outside pair of refrigeration technique having adopted in static loading cylinder, fricative heat while greatly reducing due to sealing place high frequency motion, has reduced the running temperature of start cylinder, ensure the reliability of high frequency fatigue test, can adapt to long high frequency test.
Brief description of the drawings
Fig. 1 is the structural representation of tension and compression and torsional fatigue vibration testing device in embodiment mono-;
Fig. 2 is the left view of twisting test mechanism;
Fig. 3 is the structural representation of tension and compression and torsional fatigue vibration testing device in embodiment bis-;
Fig. 4 (a) is a kind of structural profile schematic diagram of compound start cylinder;
Fig. 4 (b) is that piston rod in Fig. 4 (a), static loading cylinder piston and power load cylinder piston schematic diagram;
Fig. 5 is the structural profile schematic diagram of another kind of compound start cylinder;
Fig. 6 is the Shuan Leng mechanism of static loading cylinder in compound start cylinder.
1-test unit stand, 2-tension and compression start cylinder, 3-the first web member, 4-power sensor, 5-the second web member, 6-guiding mechanism, 7-guide rod, 8-pilot hole, 9-adjuster bar, 10-the 3rd web member, 11-torque sensor, the tested workpiece of 12-, 13-bearing slew gear, 14-swing arm, 15-linkage assembly, 16-reverses start cylinder, 17-displacement transducer, 18-second displacement sensor.
2-1 static loading cylinder, 2-11, oilhole on 2-12 static loading cylinder, 2-13 static loading cylinder cylinder body, 2-14 static loading cylinder end cap, 2-2 power loads cylinder, 2-21, 2-22 power loads the oilhole on cylinder, 2-23 power loads cylinder cylinder body, 2-24 power loads cylinder end cap, 2-3 piston rod, 2-31 mozzle, 2-32 fixed connecting piece, 2-33 mozzle support member, 2-34 oil through, 2-35, 2-36 leads to oil groove, 2-37, 2-38 heat eliminating medium gateway, 2-39 seal, 2-4 static loading cylinder piston, 2-5 power loads cylinder piston, 2-6 sound cylinder connects end cap, 2-61 vent port, 2-7 oil inlet pipe, 2-8 scavenge pipe.
Embodiment
Below in conjunction with the accompanying drawing embodiment that develops simultaneously, the utility model is described in detail.
Embodiment mono-
Fig. 1 is the structural representation of the present embodiment tension and compression and torsional fatigue vibration testing device, it comprises test unit stand 1,3 cover tensile and compression testing machine structures and 1 cover twisting test mechanism, the present embodiment only with 3 stations as an example, in practice can be as required and the more station of spatial design.The present embodiment can complete tension and compression and the torsional fatigue vibration test of three tested workpiece simultaneously.
As shown in Figure 1, every cover tensile and compression testing machine structure comprises tension and compression start cylinder 2, the first web member 3, power sensor 4, the second web member 5, guiding mechanism 6, guide rod 7 and adjuster bar 9.
Wherein, tension and compression start cylinder 2 is linear motion conversion mechanisms, it is arranged on test unit stand 1, the piston rod of tension and compression start cylinder 2 is connected with power sensor 4 by the first web member 3, power sensor 4 is connected with guide rod 7 by the second web member 5, guide rod 7 is connected with adjuster bar 9, and adjuster bar 9 is connected with one end of tested workpiece 12.Tension and compression start cylinder 2, guide rod 7, adjuster bar 9 and tested workpiece 12 move on same straight line, and the straight-line trajectory of different tensile and compression testing machine structures is parallel to each other.
On test unit stand 1, be designed with guiding mechanism 6, guide rod 7 can only carry out rectilinear motion under the restriction of guiding mechanism 6, so just can ensure that above-mentioned motion is stretching out or when retraction movement, can move along its axial direction, and not produce side force.Guiding mechanism 6 can adopt an orienting lug with U-shaped groove to realize, and U-shaped groove is guide rail.
Twisting test mechanism comprises: 3 13,3 linkage assemblys of bearing slew gear 15 with swing arm 14, one reverse start cylinder 16 and for obtaining the sensor of tested workpiece windup-degree.Fig. 2 is the left view that Fig. 1 removes tensile and compression testing machine structure retrotorsion test mechanism.Bearing slew gear 13 is linear motion conversion mechanisms, and it is fixed on test unit stand 1, is applied to for the straight line force that puts on swing arm 14 is converted to the twisting resistance that rotates end, and described rotation end is connected with the other end of tested workpiece 12; Between swing arm 14 in each bearing slew gear, connect by linkage assembly 15, the swing arm 14 that is positioned at one end is further connected with the piston rod that reverses start cylinder 16 by a linkage assembly 15; Reversing start cylinder 16 is fixed on test unit stand 1 by bearing.In the time that torsion start cylinder 16 is flexible, this rectilinear motion is delivered on each swing arm 14 by linkage assembly 15, is converted to twisting resistance is applied on tested workpiece by bearing slew gear.In the present embodiment, can adopt for obtaining the sensor of tested workpiece windup-degree the displacement transducer 17 that is arranged at torsion start cylinder 16, obtain the windup-degree of tested workpiece by conversion, also can angular transducer be directly set in practice and directly measure.When carrying out pressure and moment of torsion control, need to know applied pressure size and windup-degree, therefore power sensor and the sensor for angle measurement are necessary.
If need to detect the deformation that tested workpiece produces under applied pressure, further on tension and compression start cylinder 2, second displacement sensor 18 be set.
By controlling direction of motion and the motion frequency of tension and compression start cylinder 2 piston rods, just can drive tested workpiece 12 to produce corresponding movement tendency, thereby tested workpiece 12 is applied to pulling force or the pressure of corresponding frequencies, the effect of power sensor 4 is to measure tension and compression starts cylinder 2 to be applied to pulling force on tested workpiece 12 or the size of pressure, and measure under the effect of this pulling force or pressure by the second displacement sensor 18 being arranged on tension and compression start cylinder 2, the displacement that piston rod produces, this displacement is the deformation size that tested workpiece 12 occurs.
Reverse motion frequency and the motion amplitude of the piston rod of start cylinder 16 by control, just can produce rotatablely moving of corresponding frequencies with dynamic bearing slew gear 13 by linkage assembly 15 and swing arm 14, thereby make tested workpiece 12 that the twisting motion of corresponding frequencies occur.Can measure the displacement size of the piston rod that reverses start cylinder 16 by being arranged on the displacement transducer 17 reversing on start cylinder 16, in the case of the length of swing arm 14 is known, just can calculate according to the measured value of displacement transducer 17 angle of the rotation of bearing slew gear 13, thereby obtain the windup-degree that tested workpiece 12 occurs, the torsional moment producing under this windup-degree can be calculated by the product between power output and its arm of force length of torsion start cylinder 16.The power output of reversing start cylinder 16 is multiplied by respectively by the pressure in two chambeies after the working area in two chambeies subtracts each other and obtains.The length of the arm of force is that the tie point of torsion start cylinder 16 and swing arm 14 is to the vertical range of swing arm 14 centres of gyration.
Embodiment bis-
As shown in Figure 3, the present embodiment is the improvement to embodiment mono-.In the present embodiment, in order to monitor the torsional moment producing under applied windup-degree, increased the 3rd web member 10 and torque sensor 11, adjuster bar 9 is connected with torque sensor 11 by the 3rd web member 10, and 11 of torque sensors are connected with one end of tested workpiece 12.
In addition, the present embodiment also improves adjuster bar 9.As shown in Figure 3, at the equally spaced pilot hole 8 of one end of adjuster bar 9 design one row, the other end is connected with the screw that the 3rd web member 10 provides by screw thread.Adjuster bar 9 can be connected with guide rod 7 by any one pilot hole 8, by regulating the 3rd web member 10 degree of depth that is threaded with adjuster bar 9, finely tune the shared space of tested workpiece 12, thereby regulate the installing space of tested workpiece 12, to meet the installation requirement of tested workpiece of different length.In the time that above-mentioned fine setting still can not meet the demands, can change the pilot hole that adjuster bar 9 uses, can further regulate the installing space of tested workpiece.In practice, also can be on guide rod 7 Design Orientation hole 8, adjuster bar 9 is connected with guide rod 7 by any one pilot hole.
Embodiment tri-
In pressure torture test, apply an invariable static(al) conventionally first to tested workpiece, an alternating force on this basis more then superposes.In prior art, tension and compression start cylinder 2 adopts a hydraulic actuation cylinder to carry out above-mentioned test conventionally, owing to carrying out, the required test period of torture test is longer, therefore the energy that consumed is very large, and start cylinder produces a large amount of heats in the meeting that works long hours, cause seal to damage, piston rod wearing and tearing.
Therefore the tension and compression start cylinder 2 of the present embodiment adopts compound start cylinder.This compound start cylinder is that static loading cylinder and power load cylinder set all-in-one-piece structure, and as shown in Fig. 4 (a), it comprises that the static loading cylinder 2-1 of coaxial connection and power load cylinder 2-2.Static loading cylinder 2-1 is communicated with by piston hole with the inner chamber that power loads cylinder 2-2, and two oil cylinders share a piston rod 2-3.
The two ends of piston rod 2-3 reach outside for being connected test specimen from static loading cylinder 2-1 with end cap 2-14,2-24 that power loads cylinder 2-2 respectively, and in this test unit, the piston rod stretching out from static loading cylinder 2-1 mono-side connects the first web member 3.Piston rod 2-3 is multidiameter, and as Fig. 4 (b), its thick section is provided with static loading cylinder piston 2-4, and thin segment is provided with power and loads cylinder piston 2-5, and two-piston lays respectively in the cylinder body of two oil cylinders.Install for convenient, static loading cylinder piston 2-4 and multidiameter one process, and power is embedded on piston rod after loading cylinder piston 2-5, forms double-piston.
On static loading cylinder 2-1, arrange two for passing in and out oily oilhole 2-11,2-12, when loading, thereby by the pressure oil that passes into setting value to static loading cylinder 2-1, test specimen is applied to axial static pulling force or static pressure; Wherein, in the time that test specimen is carried out to pressure test, oilhole 2-11 is oil-in, and oilhole 2-12 is drain tap, in the time that test specimen is carried out to tensile test, and oppositely logical oil.Power loads on cylinder 2-2 and also arranges two for passing in and out oily oilhole 2-21,2-22, when loading, thereby is superimposed on static(al) by alternately test specimen being applied to axial alternating force to the logical oil of two oilholes of power loading cylinder 2-2.In the time that the power of static loading cylinder output reaches the steady state value setting, can also just two chambeies of static loading cylinder be turn-offed, now the pressure in static loading cylinder two chambeies can remain unchanged, even not for it provides hydraulic energy source, static loading power also can remain unchanged, thereby reach the saving energy, reduce the object of heating.
Effective working area of static loading cylinder piston 2-4 is by test specimen loading static(al) size and charge oil pressure are determined jointly, and effective working area that power loads cylinder piston 2-5 determines jointly by test specimen being loaded to alternating force size and charge oil pressure.
In Fig. 4 (a), the connecting portion that static loading cylinder 2-1 and power load cylinder 2-2 adopts a conventional end cover structure, is just designed to bilateral structure.Fig. 5 shows preferably embodiment of one, and as shown in Figure 5, static loading cylinder 2-1 connects end cap 2-6 by sound cylinder and connects power loading cylinder 2-2.It is the cylinder body with two piston holes of size that sound cylinder connects end cap 2-6, two piston holes adapt with thick section of multidiameter and the diameter of thin segment respectively, the stepped portion of multidiameter is positioned at sound cylinder and connects end cap 2-6 chamber, and this design is convenient to the processing of connection and each parts.Cause air pressure change because stepped portion connects athletic meeting in end cap at sound cylinder, therefore further connect on end cap 2-6 sidewall vent port 2-61 is set at sound cylinder.One of them oilhole of static loading cylinder can be arranged at sound cylinder and connect in end cap 2-6.
The piston hole place that sound connects on end cap 2-6, static loading cylinder and power loading cylinder end cap is equipped with seal 2-39.Because fluid in static(al) cylinder does not flow substantially, piston rod produces high temperature under high-frequency high-speed motion at seal place, fragile piston rod and seal, thus reduce equipment life.For this reason, the utility model further in static loading cylinder partial design two-way cooling structure, comprise piston rod cooling structure and cylinder body cooling structure.Fig. 6 shows the schematic diagram of two-way cooling structure, has only drawn static loading cylinder part in figure.
As shown in Figure 6, piston rod cooling structure is arranged at thick section of piston rod, and thick section of piston rod 2-3 is hollow structure, and mozzle 2-31 is housed in this hollow structure, and this mozzle can adopt stainless-steel tube; One end of mozzle 2-31 is communicated with outside, import and export A for one as heat eliminating medium, the mozzle 2-31 other end is communicated with the cavity of hollow structure, as can be seen from the figure, mozzle 2-31 does not reach the bottom of piston rod hollow structure, thereby space in the pipe of mozzle 2-31 is communicated with the hollow structure of piston rod.Between the tube wall of mozzle 2-31 and the sidewall of hollow structure, leave water conservancy diversion gap; Adopt fixed connecting piece 2-32 by described water conservancy diversion gap and extraneous seal isolation, fixed connecting piece 2-32 also plays mozzle is fixed on to the effect on the axis of the piston simultaneously.Piston rod 2-3 stretches out on the sidewall of compound start cylinder one end and offers through hole, imports and exports B as another of heat eliminating medium.These import and export B connects outside scavenge pipe 2-8, and aforesaid import and export A connects outside oil inlet pipe 2-7, and heat eliminating medium is from importing and exporting A and enter piston rod successively by mozzle inside, described water conservancy diversion gap and importing and exporting B to carry out the axis of the piston cooling.Heat eliminating medium can adopt cold oil.
If mozzle 2-31 is longer, in order to ensure its steadiness, one or more mozzle support member 2-33 can also be set in water conservancy diversion gap, this mozzle support member 2-33 is provided with flow-guiding channel, ensures flowing of heat eliminating medium.Multiple mozzle support member 2-33 are distributed in described water conservancy diversion gap.
Cylinder body cooling structure is arranged on the cylinder body of static loading cylinder.Specifically, in static loading cylinder 2-1 sidewall, axially have multiple oil through 2-34, the axle center of oil through can with static loading cylinder body axis parallel, thereby be convenient to processing, and multiple oil through 2-34 is circumferentially distributed in static loading cylinder 2-1 sidewall.Offer respectively an annular groove as logical oil groove 2-35,2-36 at former and later two end caps of static loading cylinder towards the one side of inner chamber of cylinder block, oil through 2-34 is communicated with two logical oil groove 2-35,2-36, each logical oil groove place all offers one and is communicated with this logical oil groove and outside heat eliminating medium gateway 2-37,2-38, these two heat eliminating medium gateways connect respectively oil inlet pipe 2-7 and scavenge pipe 2-8, heat eliminating medium is from the logical oil groove of static loading cylinder one side enters, the logical oil groove that flows into opposite side via oil through is discharged, thereby realizes the cooling of static loading cylinder.
The utility model is by the two cooling bodies with fluid, and the heat that seal place is produced leaves, and has ensured the reliability of equipment long-time running.
In sum, these are only preferred embodiment of the present utility model, be not intended to limit protection domain of the present utility model.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (10)
1. tension and compression and a twisting vibration fatigue experimental device, is characterized in that, comprising: test unit stand (1), twisting test mechanism and N cover tensile and compression testing machine structure, and N is more than or equal to 2 positive integer;
Every cover tensile and compression testing machine structure comprises tension and compression start cylinder (2), the first web member (3), power sensor (4), the second web member (5), guiding mechanism (6), guide rod (7) and adjuster bar (9); Tension and compression start cylinder (2) is linear movement cylinder, it is arranged on test unit stand (1), the piston rod of tension and compression start cylinder (2) is connected with power sensor (4) by the first web member (3), power sensor (4) is connected with guide rod (7) by the second web member (5), guide rod (7) is connected with adjuster bar (9), and adjuster bar (9) is connected with one end of tested workpiece (12); Adjuster bar (9) is provided with multiple adjustings position, according to the size of tested workpiece (12), guide rod (7) is connected on the corresponding adjusting position of adjuster bar (9); It is upper that guiding mechanism (6) is fixed on test unit stand (1), guide rod (7) rectilinear motion under the restriction of guiding mechanism (6); Tension and compression start cylinder (2), guide rod (7), adjuster bar (9) and tested workpiece (12) move on same straight line, and the straight-line trajectory of different tensile and compression testing machine structures is parallel to each other;
Twisting test mechanism comprises: N is with the bearing slew gear (13) of swing arm (14), a N linkage assembly (15), a torsion start cylinder (16) and for obtaining the sensor of tested workpiece windup-degree; Bearing slew gear (13) is linear motion conversion mechanism, it is fixed on test unit stand (1), for the straight line force that puts on swing arm (14) is converted to and is applied to the twisting resistance that rotates end, described rotation end is connected with the other end of tested workpiece (12); Between swing arm (14) in each bearing slew gear, by linkage assembly (15) series connection, the swing arm (14) that is positioned at one end is further connected with the piston rod that reverses start cylinder (16) by a linkage assembly (15); Reversing start cylinder (16) is fixed on test unit stand (1) by bearing.
2. device as claimed in claim 1, it is characterized in that, at described guide rod (7) and adjuster bar (9) link, at the upper design one equally spaced pilot hole of row (8) of adjuster bar (9), the mounting hole coordinating with pilot hole in the upper design of guide rod (7), guide rod (7) inserts adjuster bar (9) inside, and mounting hole connects after aiming at selected pilot hole.
3. device as claimed in claim 1, it is characterized in that, every cover tensile and compression testing machine structure further comprises torque sensor (11) and the 3rd web member (10), adjuster bar (9) is connected with torque sensor (11) by the 3rd web member (10), and torque sensor (11) is connected with one end of tested workpiece (12).
4. device as claimed in claim 3, is characterized in that, one end design one equally spaced pilot hole of row (8) of described adjuster bar (9), and the other end is connected with the 3rd web member (10) by screw thread; Adjuster bar (9) can be connected with guide rod (7) by any one pilot hole, by regulating the 3rd web member (10) degree of depth that is threaded with adjuster bar (9), finely tunes the shared space of tested workpiece (12).
5. device as claimed in claim 1, is characterized in that, this device further comprise be arranged at tension and compression start cylinder (2) for obtaining the second displacement sensor (18) of tension and compression start cylinder (2) piston displacement.
6. the device as described in claim 1 to 5 any one, it is characterized in that, described tension and compression start cylinder (2) adopts compound start cylinder, it comprises that the static loading cylinder (2-1) of coaxial connection and power load cylinder (2-2), two load cylinder shares a piston rod (2-3), stretch out from static loading cylinder (2-1) and the end cap that power loads cylinder (2-2) respectively at the two ends of piston rod (2-3), and the piston rod stretching out from static loading cylinder (2-1) connects the first web member (3); Piston rod (2-3) is multidiameter, and thick section is provided with static loading cylinder piston (2-4), and thin segment is provided with power and loads cylinder piston (2-5), and two-piston lays respectively at static loading cylinder and power loads in the cylinder body of cylinder; Static loading cylinder (2-1) loads on cylinder (2-2) and arranges respectively two for passing in and out oily oilhole with power.
7. device as claimed in claim 6, is characterized in that, static loading cylinder (2-1) connects end cap (2-6) by sound cylinder and connects power loading cylinder (2-2); Sound cylinder connects end cap (2-6) for having the cylinder body of two piston holes of size, and the stepped portion of multidiameter is positioned at sound cylinder and connects end cap (2-6) chamber; Sound cylinder connects end cap (2-6) sidewall and is provided with vent port.
8. device as claimed in claim 6, is characterized in that, thick section of described piston rod (2-3) is further provided with piston rod cooling structure; Specifically, thick section of piston rod (2-3) is hollow structure, mozzle (2-31) is housed in this hollow structure, one end of mozzle (2-31) is communicated with outside, as import and export of heat eliminating medium, mozzle (2-31) other end is communicated with hollow structure, between the tube wall of mozzle (2-31) and the sidewall of hollow structure, leaves water conservancy diversion gap; Adopt fixed connecting piece (2-32) by described water conservancy diversion gap and extraneous seal isolation; Piston rod (2-3) stretches out on the sidewall of compound start cylinder one end offers through hole, as another import and export of heat eliminating medium.
9. device as claimed in claim 8, is characterized in that, on the cylinder body of described static loading cylinder (2-1), is further provided with cylinder body cooling structure; Specifically, in static loading cylinder (2-1) sidewall, axially have multiple oil throughs (2-34), offer respectively a logical oil groove (2-35,2-36) at former and later two end caps of static loading cylinder towards the one side of inner chamber of cylinder block, oil through (2-34) is communicated with two logical oil grooves (2-35,2-36), and each logical oil groove place all offers one and is communicated with this logical oil groove and outside heat eliminating medium gateway.
10. device as claimed in claim 9, is characterized in that, the axle center of described oil through (2-34) and static loading cylinder body axis parallel, and multiple oil through (2-34) is circumferentially distributed in static loading cylinder (2-1) sidewall; Described logical oil groove is annular groove.
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| CN201320778354.XU CN203688373U (en) | 2013-12-02 | 2013-12-02 | Tension compression and torsional vibration fatigue test device |
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| CN201320778354.XU CN203688373U (en) | 2013-12-02 | 2013-12-02 | Tension compression and torsional vibration fatigue test device |
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| CN201320778354.XU Withdrawn - After Issue CN203688373U (en) | 2013-12-02 | 2013-12-02 | Tension compression and torsional vibration fatigue test device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103616303A (en) * | 2013-12-02 | 2014-03-05 | 北京乐冶液压气动设备技术有限公司 | Tension-compression and torsion vibration fatigue test device |
| CN104236880A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Fatigue test device for torque arm assembly |
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| CN103616303A (en) * | 2013-12-02 | 2014-03-05 | 北京乐冶液压气动设备技术有限公司 | Tension-compression and torsion vibration fatigue test device |
| CN104236880A (en) * | 2014-08-26 | 2014-12-24 | 中国直升机设计研究所 | Fatigue test device for torque arm assembly |
| CN104897479A (en) * | 2014-12-12 | 2015-09-09 | 国家电网公司 | Comprehensive detection system for mechanical properties of composite post insulator |
| CN104807704A (en) * | 2015-05-08 | 2015-07-29 | 西安向阳航天材料股份有限公司 | Bi-metal composite pipe bending test device |
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