CN211235340U

CN211235340U - Extensometer adjusting and aligning device for creep fatigue testing machine

Info

Publication number: CN211235340U
Application number: CN201922036083.0U
Authority: CN
Inventors: 潘州鑫; 娄维尧; 肖凡; 章林烨; 宋宇轩; 李曰兵; 蔡姚杰
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-08-11
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses an extensometer adjusts aligning device for creep fatigue testing machine relates to the test instrument field, and it includes the extensometer, adjusts and aims at the main part and adjust fixed subassembly, the extensometer with adjust and aim at the movably connection of main part, adjust and aim at the main part setting and be in adjust fixed subassembly, adjust and aim at the main part including aiming at calibration equipment and adjusting the base, aim at calibration equipment and include infrared emission device, infrared emission device sets up in adjusting the base, infrared emission device includes infrared emission end, adjusting the base and having infrared emission path mouth in aiming at the calibration direction, infrared emission end transmission infrared ray jets out from infrared emission path mouth, has realized adjustment and the location of the extensometer under less artificial factor interference.

Description

Extensometer adjusting and aligning device for creep fatigue testing machine

Technical Field

The utility model relates to a test instrument field, concretely relates to alignment device is adjusted to extensometer for creep fatigue testing machine.

Background

In the industrial field, the application of engineering materials is indispensable, the engineering materials are various, and different materials have different properties, so that the performance of the engineering materials needs to be tested. When different devices are in different working environments, the adopted engineering materials are different. Engineering materials include steel materials used for supercritical units of thermal power plants and aircraft engine materials, which are often used in high-temperature environments. At present, the test of the high-temperature performance of the material mainly comprises a high-temperature creep performance test, a high-temperature fatigue performance test and a material characteristic test under the interaction of high-temperature creep. The creep fatigue machine has higher requirement on the experimental precision, and different extensometers are required to be adopted and subjected to position adjustment aiming at different experimental samples, so that the adjustment efficiency is greatly reduced. The existing position adjustment mode is often completed by manual adjustment, which is time-consuming and consumes unnecessary manpower. The experiment precision is not high due to the fact that the position of the extensometer is roughly adjusted manually, and certain adjustment deviation often exists, so that accurate installation of a sample is not facilitated. For the creep fatigue test of materials, the accurate installation of the sample and the accurate positioning of the extensometer are ensured to play a vital role in the success of the test.

SUMMERY OF THE UTILITY MODEL

The accuracy of the adjustment location that the extensometer exists based on above-mentioned current manual adjustment location is not high, and the adjustment location is difficult, and manpower consumption is great, the problem of sample accurate installation, and the accuracy of the adjustment location that exists for the extensometer of solving above-mentioned current manual adjustment location is not high, and the adjustment location is difficult, and manpower consumption is great, the problem that the sample can not accurately be installed, the utility model provides an aligning device is adjusted to the extensometer for creep fatigue testing machine to the messenger is not high to the degree of accuracy of the adjustment location that the extensometer of above-mentioned current manual adjustment location exists, and the adjustment location is difficult, and manpower consumption is great, and the technical problem that the sample can not accurately be installed provides following technical scheme:

the utility model provides an alignment device is adjusted to extensometer for creep fatigue testing machine, this an alignment device is adjusted to extensometer for creep fatigue testing machine include the extensometer, adjust and aim at the main part and adjust fixed subassembly, the extensometer with adjust and aim at the movably connection of main part, adjust and aim at the main part setting and be in adjust fixed subassembly is last, adjust and aim at the main part including aiming at calibration equipment and adjusting the base, it includes infrared emission device to aim at the calibration equipment, infrared emission device sets up in adjusting the base, infrared emission device includes infrared emission end, it has infrared emission path mouth to adjust the base on aiming at calibration direction, infrared emission end transmission infrared ray jets out from infrared emission path mouth.

Furthermore, adjust fixed subassembly including adjusting the mounting and adjusting fixed base member, adjust the mounting and install adjust fixed base member is last, works as adjust the mounting and adjust the back, fix adjust fixed base member is last.

Further, the alignment checking device further comprises a level gauge, and the level gauge is installed on the adjusting base.

Furthermore, adjust and aim at the main part and still include to push away and revolve connecting piece and regulating spring, push away revolve the connecting piece with regulating spring movably is connected, the extensometer is fixed push away revolve the connecting piece on, push away revolve the connecting piece with adjust base sliding connection.

Furthermore, the pushing and rotating connecting piece comprises a pushing and rotating switch, a pushing and rotating switch groove is formed in one lateral surface of the adjusting base, and the pushing and rotating switch is slidably connected with the pushing and rotating switch groove in a groove mode.

Furthermore, a pulley block is arranged on one lateral surface of the pushing and rotating connecting piece, and a track matched with the pulley block is arranged on one lateral surface of the adjusting base.

Furthermore, an infrared emitting device switch is arranged on the adjusting base and connected with the infrared emitting device through a lead.

Further, adjust the mounting including the fixed ring group that has a plurality of solid fixed rings, gu fixed ring includes main ring portion and attaches ring portion, main ring portion has protruding stupefied, attach ring portion has the slot, protruding stupefied with the slot cooperation is connected, and protruding stupefied with the slot passes through the screwed connection spare and connects, it is the guide post to adjust fixed base member, gu fixed ring cup joints on the guide post.

Further, rubber anti-skid pads are attached to the inner annular surfaces of the main ring portion and the auxiliary ring portion.

Furthermore, a baffle is arranged between the adjusting spring and the pushing and rotating connecting piece in the adjusting base, a connecting through hole is formed in the baffle, and the connecting position between the adjusting spring and the pushing and rotating connecting piece penetrates through the connecting through hole.

An object of the utility model is to provide an alignment device is adjusted to extensometer for creep fatigue testing machine, this an alignment device is adjusted to extensometer for creep fatigue testing machine can adjust and the position of location extensometer.

Another object of the utility model is to provide an alignment device is adjusted to extensometer for creep fatigue testing machine, this an alignment device is adjusted to extensometer for creep fatigue testing machine can the position of accurate adjustment and location extensometer.

Another object of the utility model is to provide an alignment apparatus is adjusted to extensometer for creep fatigue testing machine, this an alignment apparatus is adjusted to extensometer for creep fatigue testing machine can realize multidirectional location.

Another object of the utility model is to provide an alignment device is adjusted to extensometer for creep fatigue testing machine, this an alignment device is adjusted to extensometer for creep fatigue testing machine can not only realize holistic adjustment, also can realize local adjustment.

Another object of the utility model is to provide an alignment device is adjusted to extensometer for creep fatigue testing machine, this an alignment device is adjusted to extensometer for creep fatigue testing machine can not only realize vertical ascending position control of side, also can realize the position control of horizontal direction.

Another object of the utility model is to provide an alignment device is adjusted to extensometer for creep fatigue testing machine, this an alignment device is adjusted to extensometer for creep fatigue testing machine simple structure, convenient operation.

Another object of the utility model is to provide an alignment device is adjusted to extensometer for creep fatigue testing machine, this an alignment device is adjusted to extensometer for creep fatigue testing reaches with strong points, can directly cooperate the repacking use of direction stand connected mode on current machine.

Another object of the utility model is to provide an alignment device is adjusted to extensometer for creep fatigue testing machine, this an alignment device is adjusted to extensometer for creep fatigue testing machine manufacturing cost is lower, the simple operation.

Another object of the utility model is to provide an alignment apparatus is adjusted to extensometer for creep fatigue testing machine, this an alignment apparatus is adjusted to extensometer for creep fatigue testing machine not only can rectify the position relation of extensometer and sample, can be used for moreover to rectify and adjust base self position.

Another object of the utility model is to provide an alignment apparatus is adjusted to extensometer for creep fatigue testing machine, this an alignment apparatus is adjusted to extensometer for creep fatigue testing machine artificial factor influence is less, and the error is less, can the accurate alignment location.

Drawings

FIG. 1 is a schematic structural view of an extensometer adjusting and aligning device for a creep fatigue testing machine according to the present invention;

fig. 2 is a schematic structural diagram of an adjusting alignment main body of an extensometer adjusting alignment device for a creep fatigue testing machine according to the present invention at a viewing angle;

FIG. 3 is a schematic structural diagram of an adjustment alignment body of an extensometer adjustment alignment device for a creep fatigue testing machine according to another view angle;

fig. 4 is a schematic view of a fixing ring assembly structure of an extensometer adjusting and aligning device for a creep fatigue testing machine according to the present invention.

In the figure: extensometer-1, adjusting alignment body-2, alignment checking device-21, infrared emission device-211, level-212, adjusting base-22, infrared emission path port-221, push-turn switch slot-222, infrared emission device switch-223, baffle-224, track-225, mounting main portion-226, support plate-227, mounting slot-228, fixing plate-229, push-turn connecting piece-23, push-turn switch-231, pulley block-232, pulley-2321, connecting piece-233, adjusting spring-24, adjusting fixing component-3, adjusting fixing component-31, fixing ring set-311, main ring portion-311A, auxiliary ring portion-311B, fixing ring-3111 and adjusting fixing base-32, guide upright post-321, screw connector-33, locking nut-331 and rubber anti-skid pad-311C.

Detailed Description

The present invention is further described below with reference to fig. 1-4 and the detailed description.

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

The utility model provides an extensometer adjusts aligning device for creep fatigue testing machine, this extensometer for creep fatigue testing machine adjusts aligning device includes extensometer 1, adjusts and aims at main part 2 and adjusts fixed subassembly 3, extensometer 1 with adjust and aim at main part 2 movably and be connected, adjust and aim at main part 2 and set up on adjusting fixed subassembly 3, adjust and aim at main part 2 and include aligning verification device 21 and adjusting base 22, aligning verification device 21 includes infrared emission device 211, infrared emission device 211 sets up in adjusting base 22, infrared emission device 211 includes the infrared emission end, adjusting base 22 has infrared emission path mouth 221 in aligning verification direction, the infrared emission end transmission infrared ray jets out from infrared emission path mouth 221, the influence of human factors is small, the adjustment and the positioning of the extensometer 1 are convenient to realize, and the manpower consumption is greatly reduced. The arrangement of the adjusting and fixing component 3 is convenient for integrally adjusting and positioning the extensometer 1 and the adjusting and aligning main body 2. The infrared ray emitting device 211 is provided to facilitate alignment of the extensometer 1 with the specimen mounting position. Specifically, the infrared emitting device 211 is a common infrared emitter, the adjusting base 22 has an infrared emitting path opening 221 on the front outer surface in the alignment checking direction, the infrared emitting path opening 221 is located at the central position of the front outer surface of the adjusting base 22 in the alignment checking direction, the infrared emitting device 211 is fixed on the inward facing position of the infrared emitting path opening 221, the adjusting base 22 has a plurality of mounting slots 228 therein, and the infrared emitting device 211 is mounted in the inward facing mounting slots 228 of the infrared emitting path opening 221.

Specifically, the adjustment base 22 includes an attachment main portion 226 and a support plate 227, the attachment main portion 226 integrally extends in the direction of the adjustment fixing member 31 to form the support plate 227, and the support plate 227 is connected to the adjustment fixing member 31. The mounting main portion 226 and the support plate 227 are L-shaped as a whole, facilitating reduction in overall weight.

Further, adjust fixed subassembly 3 including adjusting fixing 31 and adjusting fixed base member 32, adjust fixing 31 and install adjust fixed base member 32 is last, works as adjust fixing 31 and adjust the back, fix adjust fixed base member 32 is last, is convenient for to the regulation and the fixing of whole device.

Further, the alignment checking device 21 further includes a level gauge 212, and the level gauge 212 is installed on the adjusting base 22, so as to judge and display whether the adjusting base 22 is in a horizontal state, and facilitate accurate adjustment and positioning of the extensometer 1. Specifically, the adjustment base 22 has a mounting groove 228 formed in a side thereof, and the level gauge 212 is fitted into the mounting groove 228, that is, the level gauge 212 is in groove contact with the mounting groove 228. The level 212 is a conventional level 212 having a circular bubble within the level 212.

Further, the adjusting alignment body 2 further includes a pushing and rotating connector 23 and an adjusting spring 24, the pushing and rotating connector 23 is movably connected with the adjusting spring 24, the extensometer 1 is fixed on the pushing and rotating connector 23, and the pushing and rotating connector 23 is slidably connected with the adjusting base 22. It is worth mentioning, push away and revolve connecting piece 23 for having the arbitrary shape of slider in the embodiment of the utility model, it includes connection piece 233 to push away to revolve connecting piece 23, connection piece 233 is cuboid connection piece 233, connection piece 233 with regulating spring 24 ring link is connected, promptly connecting piece 233 lateral part has a hollow ring, a tip ring winding of regulating spring 24 is closed in the hollow ring. It is noted that the connecting piece 233 and the adjusting spring 24 are connected in a manner including, but not limited to, the endless chain. In an embodiment of the present invention, the adjusting spring 24 is connected to the inner wall of the adjusting base 22 by a chain, that is, the inner wall of the adjusting base 22 has a hollow ring, and the other end of the adjusting spring 24 is looped around the hollow ring. The adjusting spring 24 and the connecting piece 233 are disposed in the same or opposite mounting groove 228 of the adjusting base 22.

Further, the rotation pushing connector 23 includes a rotation pushing switch 231, a lateral surface of the adjusting base 22 has a rotation pushing switch slot 222, and the rotation pushing switch 231 is slidably received in the rotation pushing switch slot 222 for horizontal positioning. The push rotary switch 231 is a cylindrical protrusion, the protrusion is connected with the push rotary switch groove 222, and the diameter of the protrusion is larger than the diameter of the groove. One side of the connecting piece 233 is provided with a screw hole, and the protrusion is in threaded connection with the screw hole, so that the extensometer 1 is convenient to adjust and fix. It should be noted that the bottom of the extensometer 1 is provided with a connecting groove, and the connecting piece 233 is fixed to the connecting groove in a groove-connection manner, which includes, but is not limited to, fixing in a groove-connection manner, for example, by welding a fixing plate 229, the fixing plate 229 is fixed to the bottom of the extensometer 1 by screwing, and the like.

Furthermore, a pulley block 232 is arranged on one lateral surface of the screwing connector 23, and a track 225 matched with the pulley block 232 is arranged on one lateral surface of the adjusting base 22. Specifically, the connecting piece 233 is fixed above the pulley block 232, that is, the connecting piece 233 and the pulley block 232 are integrally connected and fixed, for example, welded. In the present embodiment of the present invention, the pulley block 232 includes two pulleys 2321, and when the horizontal position of the extensometer 1 is adjusted by using the rotation pushing switch 231, the pulleys 2321 slide in the track 225. In an embodiment of the present invention, the pulley block 232 includes two rollers, and when the horizontal position of the extensometer 1 is adjusted by using the push-turn switch 231, the rollers roll in the track 225, so that the moving friction force of the motion in the track 225 is reduced, and the operator can conveniently use the push-turn switch 231 to push the rotation in the push-turn switch slot 222.

Further, an infrared emitting device switch 223 is disposed on the adjusting base 22, and the infrared emitting device switch 223 is connected to the infrared emitting device 211 through a wire, so as to control the operation of the infrared emitting device 211. Infrared ray emitter switch 223 is located extensometer 1 alignment direction the opposite direction on the tip of adjusting base 22, promptly the rear end portion of adjusting base 22, infrared ray emitter switch 223 has on the rear end face of adjusting base 22, for common button, the output of button with infrared ray emitter switch 223's input is connected, the input of button with infrared ray emitter switch 223's output is connected.

Further, adjust mounting 31 including the fixed ring group 311 that has a plurality of fixed rings 3111, fixed ring 3111 includes main ring portion 311A and attaches ring portion 311B, main ring portion 311A has protruding stupefied, attach ring portion 311B has the slot, protruding stupefied with the slot cooperation is connected, and protruding stupefied with the slot passes through the spiro union 33 and connects, it is guide column 321 to adjust fixed base member 32, fixed ring 3111 cup joints on the guide column 321. The end of the adjusting base 22 is provided with a fixing plate 229, and the fixing plate 229 is fixedly connected with the end of the adjusting base 22, and the fixing connection manner includes, but is not limited to, inserting and fixing, such as fastening with a gun nail. Specifically, the fixing ring set 311 includes two fixing rings 3111, and the fixing ring set 311 and the fixing plate 229 are fixed by a screw 33. The fixing plate 229, the auxiliary ring portion 311B and the main ring portion 311A are sequentially arranged, the protruding edge of the main ring portion 311A is inserted into the slot of the auxiliary ring portion 311B, a bolt connection through hole corresponding to the protruding edge after the slot is adapted is formed in the protruding edge, the bolt connection piece 33 comprises but is not limited to a locking nut 331, and the locking nut 331 is sequentially screwed into the main ring portion 311A, the auxiliary ring portion 311B and the fixing plate 229 in a bolt connection mode. In an embodiment of the present invention, the fixing plate 229 is fixedly connected to the attachment ring portion 311B, and the fixing connection is a bolt, a welding, a nail connection, or the like.

Further, rubber pads 311C are attached to inner annular surfaces of the main ring portion 311A and the auxiliary ring portion 311B. The utility model discloses an in this embodiment, rubber slipmat 311C splices main ring portion 311A and attach the interior anchor ring of ring portion 311B, can produce deformation and increase area of contact when rubber slipmat 311C atress for above-mentioned solid fixed ring 3111 fastens on above-mentioned guide post 321 surface.

Further, a baffle 224 is arranged between the adjusting spring 24 and the screwing connector 23 in the adjusting base 22, a connecting through hole is arranged on the baffle 224, and the connecting position between the adjusting spring 24 and the screwing connector 23 penetrates through the connecting through hole. In the present embodiment of the invention, a sliding groove is provided on the side wall of the mounting groove 228 of the adjusting spring 24, the baffle 224 is connected with the sliding groove in a matching way, the baffle 224 can slide in the sliding groove, so that after the operator releases the push-turn switch 231, the action area of the elastic force of the adjusting spring 24 is enlarged in the process of balancing the supporting force of the sample with the elastic force of the adjusting spring 24, thereby allowing the connecting piece 233 to release its elastic force forward without being biased by the elastic force, in a manner including but not limited to slot-bonding, one end of the adjusting spring 24 abuts against the inner wall of the groove end of the installing groove 228 of the adjusting spring 24, and the other end of the adjusting spring penetrates through the connecting through hole on the baffle 224 to be connected with the connecting piece 233 of the pushing and screwing connecting piece 23, and the diameter of the connecting through hole is smaller than that of the adjusting spring 24.

The adjusting base 22 is connected to the two fixing rings 3111 of the guide column 321 by a fixing plate 229 facing one end of the adjusting and fixing unit 3 in the direction, and the position of the entire device is changed in the direction of the guide column 321 by adjusting the positions of the two fixing rings 3111; the extensometer 1 is fixed on the adjusting base 22 of the extensometer 1 through the connecting sheet 233, and the position of the extensometer 1 in the horizontal direction is adjusted by toggling the push-turn switch 231; the infrared emission device is arranged on the adjusting base 22 and is used for correcting the position relation between the extensometer 1 and the sample; the adjusting base 22 is laterally provided with a level gauge 212 for adjusting and correcting the position of the adjusting base 22; the adjusting spring 24 is mounted inside the adjusting base 22, and the extensometer 1 reaches a designated position under the combined action of the push-turn switch 231, so that the positioning of the extensometer in the horizontal direction is realized. The connecting piece 233 is connected to the adjusting spring 24, and the side surface thereof is connected to the push switch 231, the push switch 231 moves in the push switch slot 222, and when the push switch reaches a predetermined position, the switch is screwed to be fixed, and when the push switch is unscrewed, the switch is moved; the connecting piece 233 is fixedly connected to the pulley block 232, the connecting piece 233 moves along with the movement of the pulley 2321, the pulley block 232 moves in the track 225, reaches a designated position under the combined action of the push-turn switch 231 and the adjusting spring 24, and after the push-turn switch 231 is unscrewed, the extensometer 1 is balanced under the action of the test sample and the spring force, so that the positioning in the horizontal direction is realized. The infrared emitter 211 is located at the center of the front end of the alignment direction of the adjusting base 22, and is located on the same plane with the two long rods of the extensometer 1, so as to directly align the sample. In the operating state, the adjusting base 22 emits infrared rays, when the beam spot is located at the center of the sample, the extensometer 1 is successfully aligned, when the beam spot is deviated from the sample, the extensometer 1 is not successfully aligned, the infrared ray emitting device switch 223 is located at the end of the adjusting base 22 towards the direction of the adjusting and fixing component 3, the infrared ray emitting device 211 is controlled to be turned on or off, when the infrared ray emitting device switch 223 is pressed, the infrared ray emitting device 211 starts emitting infrared rays, and when the infrared ray emitting device switch 223 is pressed again, the infrared ray emitting device 211 stops emitting infrared rays; the level 212 is located on the side of the adjustment base 22, and the level 212 has a scale indicating that the level 212 is level when the circular bubble is in the center position.

More specifically, in a first step, the position of the extensometer 1 in the direction of the guide upright 321 is changed: unscrewing the locking nut 331 on the fixing ring 3111, moving the fixing ring 3111 to a specified position, and then screwing the locking nut 331 to realize fixing; second, the position of the extensometer 1 in the horizontal direction is changed: the push-turn switch 231 is unscrewed, the push-turn switch 231 is pushed to a specified position, and then the push-turn switch 231 is screwed to realize temporary fixation; thirdly, judging whether the adjusting base 22 is in a horizontal state, checking a level gauge 212 on the side of the adjusting base 22, if the adjusting base 22 is not in the horizontal state, finely adjusting the adjusting base 22, and at this time, adjusting the adjusting and fixing assembly 3, if the adjusting and fixing assembly is in the horizontal state, pressing an infrared emitting device switch 223 to emit infrared rays, and aligning the extensometer 1 with the installation position of the sample; fourthly, after the precise positioning is performed, the push-turn switch 231 is turned off, and the extensometer 1 will push toward the sample under the action of the adjusting spring 24, and will be balanced under the supporting force provided by the sample and the elastic force of the adjusting spring 24.

In summary, an embodiment of the present invention provides an extensometer adjusting and aligning device for a creep fatigue testing machine, which realizes position adjustment of an extensometer 1 in a vertical direction through position adjustment of the fixing ring 3111; the position of the extensometer 1 in the horizontal direction is adjusted by the action of the adjusting spring 24 and the push-turn switch 231; the precise alignment and verification of the position of the extensometer 1 is achieved by means of the infrared emitting device 211 and the level gauge 212.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments, and the embodiments of the present invention can be modified or modified in any way.

It can thus be seen that the objects of the invention have been fully and effectively accomplished. The embodiment has been shown and described in sufficient detail to explain the functional and structural principles of the invention and that changes may be made without departing from such principles. Accordingly, this invention includes all modifications encompassed within the scope and spirit of the following claims.

Claims

1. An extensometer adjusting and aligning device for a creep fatigue testing machine is characterized by comprising an extensometer (1), an adjusting and aligning main body (2) and an adjusting and fixing component (3), the extensometer (1) is movably connected with the adjusting alignment body (2), the adjusting alignment body (2) is arranged on the adjusting fixing component (3), the adjusting alignment body (2) comprises an alignment checking device (21) and an adjusting base (22), the alignment checking device (21) comprises an infrared emitting device (211), the infrared emitting device (211) is arranged in the adjusting base (22), the infrared ray emitting device (211) comprises an infrared ray emitting end, the adjusting base (22) is provided with an infrared ray emitting path port (221) in the alignment checking direction, the infrared emission end emits infrared rays to be emitted from an infrared emission path port (221).

2. The extensometer adjusting and aligning device for creep fatigue testing machine of claim 1, characterized in that the adjusting and fixing assembly (3) comprises an adjusting and fixing member (31) and an adjusting and fixing base body (32), the adjusting and fixing member (31) is installed on the adjusting and fixing base body (32), and after the adjusting and fixing member (31) is adjusted, the adjusting and fixing member is fixed on the adjusting and fixing base body (32).

3. The extensometer adjustment alignment device for creep fatigue testing machines of claim 1, characterized in that the alignment verification device (21) further comprises a level gauge (212), the level gauge (212) being mounted on the adjustment base (22).

4. The extensometer adjusting and aligning device for creep fatigue testing machine according to claim 1, characterized in that the adjusting and aligning body (2) further comprises a pushing and rotating connector (23) and an adjusting spring (24), the pushing and rotating connector (23) is movably connected with the adjusting spring (24), the extensometer (1) is fixed on the pushing and rotating connector (23), and the pushing and rotating connector (23) is slidably connected with the adjusting base (22).

5. The extensometer adjustment alignment device for creep fatigue testing machine of claim 4, characterized in that the push-turn connector (23) includes a push-turn switch (231), the adjustment base (22) has a push-turn switch slot (222) on one side surface, and the push-turn switch (231) is slidably slotted with the push-turn switch slot (222).

6. An extensometer adjustment alignment device for a creep fatigue testing machine according to any one of claims 4-5, characterized in that a pulley block (232) is provided on one lateral face of the push-screw connector (23), and a rail (225) which cooperates with the pulley block (232) is provided on one lateral face of the adjustment base (22).

7. The extensometer adjustment and alignment device for creep fatigue testing machine of claim 6, characterized in that the adjustment base (22) is provided with an infrared emitting device switch (223), and the infrared emitting device switch (223) is connected with the infrared emitting device (211) through a lead.

8. The extensometer adjustment alignment device for a creep fatigue testing machine of claim 2, characterized in that the adjustment fixture (31) comprises a fixture ring set (311) having a plurality of fixture rings (3111), the fixture ring (3111) comprises a main ring portion (311A) and an auxiliary ring portion (311B), the main ring portion (311A) has a flange, the auxiliary ring portion (311B) has a slot, the flange is in fit connection with the slot, and the flange is connected with the slot through a screw (33), the adjustment fixture base (32) is a guide column (321), and the fixture ring (3111) is sleeved on the guide column (321).

9. The extensometer adjustment alignment device for creep fatigue testing machine of claim 8, characterized in that rubber skidproof pads (311C) are attached on the inner annular surfaces of the main ring portion (311A) and the auxiliary ring portion (311B).

10. The extensometer adjusting and aligning device for the creep fatigue testing machine is characterized in that the adjusting base (22) is provided with a baffle plate (224) between the adjusting spring (24) and the pushing and rotating connecting piece (23), the baffle plate (224) is provided with a connecting through hole, and the connecting part between the adjusting spring (24) and the pushing and rotating connecting piece (23) penetrates through the connecting through hole.