CN218382085U

CN218382085U - Multipurpose testing machine

Info

Publication number: CN218382085U
Application number: CN202222492342.2U
Authority: CN
Inventors: 夏梦; 吴志强; 毛勇
Original assignee: Chongqing Gaopin Instrument Co ltd
Current assignee: Chongqing Gaopin Instrument Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2023-01-24
Anticipated expiration: 2032-09-20

Abstract

The utility model discloses a multipurpose testing machine, which comprises a base, two upright posts, an upper supporting plate and a middle supporting plate, wherein the upper supporting plate and the middle supporting plate are arranged between the two upright posts; the support table cooperates with a compression test fixture or hardness tester to perform a compression test or hardness test on the test specimen. Above-mentioned multipurpose testing machine makes one of compression test anchor clamps and hardness test meter and a supporting bench cooperation through rotating the connecting seat to can carry out compression test and hardness test to the sample, and carry out tensile test through tensile test anchor clamps to the experiment, realize tensile, compression and hardness test in an organic whole on original universal testing machine's occupation space basis, save space and cost.

Description

Multipurpose testing machine

Technical Field

The utility model relates to a multipurpose testing machine.

Background

The universal testing machine is a material testing machine integrating the functions of sample stretching, bending, compression and the like, and is mainly used for testing the mechanical properties of metal and non-metal materials, so that the mechanical properties of the sample such as elongation at break, stress, strength limit under the action of axial static pressure and the like are detected.

At present, the existing universal testing machine does not have the function of hardness analysis, and when the hardness is analyzed, various hardometers or hardness testing machines specially used for detecting the hardness are required to be additionally selected for hardness analysis of materials, so that when the test sample is tested, the mechanical analysis and the hardness analysis of the test sample are independently and separately carried out, two sets of different devices and software are required to be used, the use of the two sets of devices not only increases the production cost or the purchase cost of the devices, but also occupies a larger laboratory space, when an enterprise prepares the laboratory, a larger operation space needs to be provided, a larger laboratory needs to be leased or purchased, and the expenditure cost of the enterprise is increased.

SUMMERY OF THE UTILITY MODEL

To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: the multipurpose testing machine integrates a mechanical property test and a hardness test to solve the problem that the testing machine occupies a large space.

In order to solve the technical problem, the utility model discloses a technical scheme be: the multipurpose testing machine comprises a base, two upright columns vertically arranged on the base, an upper supporting plate and a middle supporting plate which are arranged between the two upright columns, and a tensile test clamp and an extensometer which are arranged between the upper supporting plate and the middle supporting plate, so that a tensile test is carried out on the test, and parameters such as the elongation at break and the like and corresponding performances of the test sample are tested; the testing device comprises a base, a support table, a connecting seat, a compression test fixture and a hardness tester, wherein the support table is arranged on the base and can be lifted, the connecting seat is arranged on the bottom surface of the middle support plate and can horizontally rotate around the central axis of the connecting seat, the compression test fixture and the hardness tester are arranged at two ends of the connecting seat, the compression test fixture is used for testing the mechanical property of a sample, and the hardness tester is used for testing the hardness of the sample; the connecting seat drives the compression test fixture and the hardness tester to rotate so that the compression test fixture or the hardness tester can be positioned right above the supporting table, and the supporting table is matched with the compression test fixture or the hardness tester to perform a compression test or a hardness test on a sample, so that the tensile test, the compression test and the hardness test are integrated, the occupied space of equipment and the manufacturing and purchasing costs of the equipment are saved; the middle supporting plate is provided with a limiting assembly which limits the rotation of the connecting seat when the compression test fixture or the hardness tester is positioned right above the supporting table, so that when one of the compression test fixture or the hardness tester rotates right above the supporting table, the connecting seat is matched with the limiting assembly to limit the continuous rotation of the connecting seat, and the compression test fixture or the hardness tester is prevented from generating position deviation due to the continuous rotation of the connecting seat to influence the test of a sample when being matched with the supporting table.

Set up the rotating chute that the opening faced down on the bottom surface of intermediate strut board, the connecting seat include the upper end rotationally set up in connecting axle in the rotating chute and set up in microscler connecting plate of connecting axle lower extreme, compression test anchor clamps and hardness tester set up in the both ends department of microscler connecting plate lower surface rotates microscler connecting plate through the connecting axle for compression test anchor clamps are located the brace table directly over and carry out compression test with the cooperation of brace table, perhaps make hardness tester be located the brace table directly over and carry out hardness test with the cooperation of brace table.

The top surface of the rotating groove is provided with an annular sliding groove, and the center of the annular sliding groove is superposed with the extension line of the axial lead of the connecting shaft; the two ends of the upper surface of the long connecting plate are provided with a first sliding support rod and a second sliding support rod, the upper ends of the first sliding support rod and the second sliding support rod are provided with a first sliding portion and a second sliding portion which are in sliding fit with the annular sliding groove, so that the connecting base can be in sliding connection with the top wall of the rotating groove through the first sliding support rod and the second sliding support rod, and the connecting stability between the connecting base and the rotating groove is improved.

The top surface of the rotary groove is provided with a plurality of concentric annular sliding grooves with different diameters; the upper surface of the long connecting plate is provided with a first sliding support rod and a second sliding support rod at positions corresponding to the annular sliding grooves, and the upper ends of the first sliding support rod and the second sliding support rod are provided with a first sliding part and a second sliding part which are in sliding fit with the corresponding annular sliding grooves, so that the connection points between the long connecting plate and the middle supporting plate can be increased, and the connection stability between the long connecting plate and the middle supporting plate is further improved.

The first sliding part and the second sliding part are balls which are in sliding fit in the annular sliding groove, the outer surfaces of the balls are relatively smooth, the balls and the annular sliding groove are in sliding fit smoothly, and the structure is simple.

The limiting components are arranged to be two, and the two limiting components are respectively arranged on the outer sides of the two ends of the long connecting plate to limit the long connecting plate from the two ends of the long connecting plate.

The limiting assembly comprises a mounting groove which is arranged on the lower surface of the middle supporting plate and is communicated with the rotary groove, a mounting seat which is arranged on the top surface of the mounting groove, a telescopic rod of which one end is connected with the mounting seat and the other end is arranged inwards, a self-recovery spring which is sleeved on the telescopic rod, a wedge-shaped limiting block which is arranged on the other end of the telescopic rod, a wedge-shaped groove which is arranged on the outer wall of the connecting seat and is in wedge-shaped fit with the wedge-shaped limiting block, and a driving rod which is used for driving the wedge-shaped limiting block to move relative to the wedge-shaped groove; when the wedge-shaped limiting block is positioned outside the wedge-shaped groove, the self-recovery spring and the telescopic rod are in a compression state, when the wedge-shaped limiting block is positioned in the wedge-shaped groove, the self-recovery spring and the telescopic rod are in an extension state, and the wedge-shaped limiting block is pushed to the wedge-shaped groove and clamped in the wedge-shaped groove through extension of the self-recovery spring and the telescopic rod.

The limiting assembly further comprises a guide sliding groove which is arranged on the top surfaces of the mounting groove and the rotating groove and is matched with the wedge-shaped limiting block in shape, one end of the guide sliding groove is close to the mounting seat, and the other end of the guide sliding groove is close to the long connecting plate; the wedge-shaped limiting block is in sliding fit in the guide sliding groove, so that the rigidity of connection between the wedge-shaped limiting block and the telescopic rod is improved, and the structure is more stable when the wedge-shaped limiting block is matched with the wedge-shaped groove.

The driving rod is horizontally arranged, a first end of the driving rod is hinged to the middle supporting plate so that the driving rod can rotate around the first end in the horizontal direction, the middle of the driving rod is hinged to the wedge-shaped limiting block, the first end of the driving rod serves as a fulcrum, and the second end of the driving rod is shaken so that the wedge-shaped limiting block can move relative to the wedge-shaped groove in the length direction of the telescopic rod; when making actuating lever second end towards keeping away from microscler connecting plate one side swing, the wedge stopper moves outside the wedge groove towards the wedge groove, when making actuating lever second end towards microscler connecting plate one side swing, the wedge stopper removes in the wedge groove towards the wedge groove, so alright remove on the length direction of telescopic link through actuating lever drive wedge stopper.

The utility model discloses a multipurpose testing machine has following beneficial effect at least:

through setting up the connecting seat that can rotate to set up compression test anchor clamps and hardness test meter on the connecting seat respectively, make one of compression test anchor clamps and hardness test meter and a supporting bench cooperation through rotating the connecting seat, in order can carry out compression test and hardness test to the sample, and carry out tensile test to the experiment through tensile test anchor clamps, realize tensile, compression and hardness test in an organic whole on original universal testing machine's occupation space basis, save space and cost.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a front schematic view of the multipurpose testing machine of the present invention;

fig. 2 is a bottom view of the intermediate support plate, the connecting seat and the limiting component of the present invention;

fig. 3 is a right side view of the long connecting plate, the compression test fixture and the hardness tester of the present invention.

The meaning of the reference symbols in the drawings is:

a base-1; a column-2; an upper supporting plate-3; a middle support plate-4; a rotary groove-41; an annular chute-42; tensile test fixture-5; an upper clamp-51; a lower clamp-52; extensometer-6; a connecting seat-7; a first sliding stay-71; a second sliding stay-72; ball-73; compression test fixture-8; a support table-9; a mounting seat-101; a telescopic rod-102; self-restoring spring-103; a wedge-shaped stopper-104; a drive rod-105; hardness tester-11.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Referring to fig. 1 and 2, the utility model discloses a multipurpose testing machine includes base 1, two stands 2 of vertical setting on base 1, one on one sets gradually upper support plate 3 and middle support plate 4 between two stands 2, set up tensile test anchor clamps 5 and extensometer 6 between upper support plate 3 and middle support plate 4, set up connecting seat 7 on middle support plate 4, compression test anchor clamps 8 and hardness test meter 11 on connecting seat 7, set up spacing subassembly on middle support plate 4 and set up brace table 9 on base 1, stand 2, upper support plate 3 and middle support plate 4 all support the use, tensile test anchor clamps 5 are used for the centre gripping sample and carry out the extension to the sample, extensometer 6 detects tensile elongation etc. of the sample by the extension, rotate connecting seat 7, make compression test anchor clamps 8 be located directly over brace table 9, after placing the sample on brace table 9 and making sample and compression test anchor clamps 8 contactless as the limit, compression test anchor clamps 8 compress the sample in order to detect the mechanical properties of sample; rotate connecting seat 7 for hardness tester 11 is located brace table 9 directly over, arranges the sample in brace table 9 and makes sample and hardness tester 11 contactless limit, and hardness tester 11 extrudees the sample and detects with the hardness to the sample, realizes that a device realizes detecting the mechanical properties and the hardness of sample, saves the space area and the cost expenditure of whole device.

The interior of the base 1 is provided with a device space, two support rods are also vertically arranged on the base 1, and the two upright posts 2 are vertically arranged on the top surface of the base 1 at intervals; the two opposite sides of the two upright columns 2 are respectively provided with a screw rod along the length direction of the upright columns 2, the screw rods can freely rotate around the axes of the screw rods, the two screw rods are respectively provided with a first sliding block in threaded fit with the screw rods, the two sides of the upper supporting plate 3 are respectively connected with the two first sliding blocks, the middle supporting plate 4 is horizontally arranged, and the two opposite sides of the middle supporting plate 4 are respectively fixedly connected with the two upright columns 2 and the two supporting rods. A motor and a speed reducer are arranged in the device space, an output shaft of the motor is connected with an input shaft of the speed reducer, an output shaft of the speed reducer is in transmission connection and matching with the two screw rods, the two screw rods are driven to rotate by the rotation of the motor to drive the speed reducer to operate so as to drive the two screw rods to rotate, the first slide blocks on the two screw rods drive the upper support plate 3 to move upwards or downwards, and the upper support plate 3 is provided with a first force sensor so as to measure a force value, namely a load value, of the sample in a deformation process; a limit valve is arranged on one upright post 2, a sensor is arranged on the upper supporting plate 3, when the sensor on the upper supporting plate 3 reaches the position of the limit valve, the motor stops running, and the upper supporting plate 3 stops moving; meanwhile, the rotation of the screw rod drives a photoelectric encoder inside the whole device, the displacement value of the upper supporting plate 3 is converted through a controller, and the load and displacement signals are displayed or related calculation is carried out through a computer of the testing machine, so that corresponding mechanical property data are obtained. The tensile test fixture 5 includes an upper fixture 51 and a lower fixture 52, the upper fixture 51 is fixed on the bottom surface of the upper support plate 3, the lower fixture 52 is fixed on the top surface of the middle support plate 4 at a position corresponding to the upper fixture 51, and the upper fixture 51 and the lower fixture 52 are arranged opposite to each other and aligned. The extensometer 6 is vertically arranged between the upper support plate 3 and the middle support plate 4, during use, the two ends of a sample are respectively clamped by the upper clamp 51 and the lower clamp 52, the upper clamp 51 and the lower clamp 52 are centered, the position of the upper clamp 51 is adjusted after centering, the extensometer 6 is installed, the extensometer 6 is close to the sample, after the preparation work is ready, the upper support plate 3 is driven to move upwards to enable the upper clamp 51 to clamp the sample and move upwards to stretch the sample, in the stretching process, the extensometer 6 tests the fracture elongation of the sample and the like until the test is completed, the computer calculates and integrates data, the detailed structure and the working principle refer to the prior art, and the description is omitted.

A rotating groove 41 which is opened downwards is formed in the bottom surface of the middle supporting plate 4, the cross section of the connecting seat 7 is oval, the connecting seat 7 comprises a connecting shaft which is vertically connected to the top wall of the rotating groove and a long connecting plate which is arranged at the lower end of the connecting shaft, the connecting shaft is connected to the middle point of the rotating groove 41 through a bearing so that the long connecting plate can horizontally rotate around the central axis of the connecting shaft, a first sliding support rod 71 and a second sliding support rod 72 which are vertically arranged are fixedly arranged on two sides of the top surface of the connecting seat 7 respectively, a first sliding portion is arranged at the upper end of the first sliding support rod 71, a second sliding portion is arranged at the upper end of the second sliding support rod 72, an annular sliding groove 42 which is annular and is in sliding fit with the first sliding portion and the second sliding portion is arranged on the top wall of the rotating groove 41, and the center of the annular sliding groove 42 coincides with the extension line of the axis of the connecting shaft.

Specifically, the first sliding portion and the second sliding portion are both balls 73 with smooth surfaces, the diameter of each ball 73 is larger than the cross-sectional diameter of each of the first sliding support bar 71 and the second sliding support bar 72, each ball 73 is slidably disposed in the annular sliding groove 42, an opening for the first sliding support bar 71 and the second sliding support bar 72 to movably penetrate is formed in the bottom surface of the annular sliding groove 42, when the elongated connecting plate rotates, the first sliding support bar 71 and the second sliding support bar 72 slide at the opening of the annular sliding groove 42, and the balls 73 slide in the annular sliding groove 42 to enable the connecting base 7 and the rotating groove 41 to be in sliding fit.

Preferably, the top surface of the rotating groove 41 is provided with a plurality of concentric annular sliding grooves 42 with different diameters; the upper surface of the long connecting plate is provided with a first sliding support rod 71 and a second sliding support rod 72 at the position corresponding to each annular sliding groove 42, and the upper end of each first sliding support rod 71 and the upper end of each second sliding support rod 72 are provided with a first sliding part and a second sliding part which are in sliding fit with the corresponding annular sliding groove 42, so that the connection point between the long connecting plate and the middle support plate 4 is increased, and the connection between the long connecting plate and the middle support plate 4 is more stable and firm. It should be understood that the sliding fit between the connecting seat 7 and the rotating groove 41 is not limited to the above embodiment, and other manners may be used for replacement, for example, a first sliding rail in a circular ring shape is disposed on the rotating groove 41, and the first sliding rail is disposed coaxially with the connecting seat 7, a second sliding block in sliding fit with the first sliding rail is fixedly disposed on the top surface of the connecting seat 7, and the second sliding block is slidably sleeved on the first sliding rail, so that the connection between the connecting seat 7 and the rotating groove 41 is firmer through the sliding fit between the connecting seat 7 and the rotating groove 41.

Compression test anchor clamps 8 and hardness tester 11 all set up the bottom surface at connecting seat 7, and compression test anchor clamps 8 and hardness tester 11 symmetry branch are established on the both ends of connecting seat 7, brace table 9 is located compression test anchor clamps 8 and hardness tester 11 and is located under the removal orbit, so alright so make on the horizontal projection face, no matter any position on the removal orbit that is located compression test anchor clamps 8 and hardness tester 11 of brace table 9, compression test anchor clamps 8 and hardness tester 11 homoenergetic rotate to brace table 9 directly over to cooperate with compression test anchor clamps 8 and hardness tester 11.

The compression test jig 8 and the hardness tester 11 are connected to a computer connected to the tensile test jig 5, and are controlled and data-integrated by the computer, so that the tensile test, the hardness test, and the compression test can be controlled and calculated by only one computer. The compression test fixture 8 comprises a second force sensor and an upper pressure plate, the second force sensor is connected to the bottom surface of the middle support plate 4, and the upper pressure plate is connected to the bottom of the second force sensor. During the use, at first rotate microscler connecting plate and make compression test anchor clamps 8 be located brace table 9 directly over, and carry out spacing fixed back to microscler connecting plate through spacing subassembly, place the sample on the top surface of brace table 9, and make brace table 9 rise, until the top surface of sample just has about 1mm interval or just contact with between the bottom surface of top board, the height control of brace table 9 is suitable, and make brace table 9, the central line of top board and sample align, after through the zero clearing load of computer, the displacement zero clearing, then turn on corresponding oil feed valve slowly according to the experimental requirement so that the top board extrudees the sample gradually through the oil pump in order to test, until the sample destroys, can close corresponding oil pump and oil feed valve, open the time return valve, in order to accomplish the compression test, the computer carries out arrangement calculation with the data of second force sensor, thereby obtain the data of compression strength limit, compressive strength etc. of sample, compression test anchor clamps 8 of this embodiment can be any suitable compression test pressing tool in the prior art, therefore, detailed structure and use refer to the prior art, no longer describe here. It should be understood that the compression test fixture of the present invention is not limited to the structure of the present embodiment, and any compression testing machine capable of implementing the sample compression test can be used instead of or in addition to the compression testing machine, and only the corresponding compression testing machine needs to be installed at the corresponding position of the long connecting plate.

The hardness tester 11 may use various hardness measuring instruments such as a brinell hardness tester, a vickers hardness tester, and the like. During the use, at first, rotate microscler connecting plate, make hardness tester 11 be located brace table 9 directly over, and carry out spacing fixed back to connecting seat 7 through spacing subassembly, place the sample in on brace table 9's the top surface, make the sample, the central line alignment of hardness tester 11 and brace table 9's top surface, adjust corresponding experimental power, pressurize through the computer and protect the load, so that the pressure head of hardness tester 11 impresses the sample surface, and according to test power keep removing the experimental power after the time that corresponds, calculate the hardness number through the indentation that measures on the sample, so alright realize the detection to sample hardness.

In this embodiment, an electric slip ring is arranged on the connecting seat 7, and the corresponding circuits and oil paths of the hardness tester 11 and the compression test fixture 8 are connected to a computer, a corresponding oil pump and a corresponding circuit through the electric slip ring; the supporting platform 9 can use devices such as a lifting wheel and a hydraulic oil cylinder to realize lifting and support the sample, and the lifting wheel and the hydraulic oil cylinder are both in the prior art and are not described again.

The number of the limiting assemblies can be one or two, when the number of the limiting assemblies is one, the limiting assemblies are positioned right above the supporting platform 9 and are inserted into and in wedge fit with the connecting seat 7 when the compression test fixture 8 or the hardness tester 11 rotates right above the supporting platform 9; when the two limiting assemblies are arranged, the two limiting assemblies are respectively arranged at the outer sides of two ends of the connecting seat 7, which are located right above the compression test fixture 8 or the hardness tester 11, and the two limiting assemblies are respectively inserted into two ends corresponding to the connecting seat 7 and are in wedge fit with the two ends.

Spacing subassembly sets up to two, each spacing subassembly all including set up in the mounting groove of 4 bottom surfaces of intermediate support plate and 41 intercommunications with the swivelling chute, the mount pad 101 of setting at the mounting groove top surface, one end is connected in mount pad 101 and the other end inwards and towards the telescopic link 102 that connecting seat 7 level set up, establish the self-resuming spring 103 on telescopic link 102, the wedge stopper 104 of setting on the telescopic link 102 other end, set up on microscler connecting plate lateral wall with wedge stopper 104 wedge-shaped complex wedge groove, be used for driving wedge stopper 104 for the actuating lever 105 of wedge groove removal and set up on mounting groove and swivelling chute 41 top surface and with wedge stopper 104 sliding fit's guide chute, when wedge stopper 104 is located the wedge groove outward, self-resuming spring 103 and telescopic link 102 compress, when wedge stopper 104 is located the wedge inslot, self-resuming spring 103 and telescopic link 102 extend.

Specifically, the two mounting grooves are respectively arranged on two sides of the rotating groove 41 and are sequentially communicated, the two mounting grooves are located at two ends of the long connecting plate when the compression test fixture 8 or the hardness test meter 11 is located right above the supporting table 9, each mounting seat 101 is correspondingly arranged in the two mounting grooves, the tops of the two mounting seats are respectively connected to the top surfaces of the two mounting grooves and located on the outer sides of the compression test fixture 8 and the hardness test meter 11 on the horizontal projection surface, the telescopic rods 102 are horizontally arranged, one end of each telescopic rod 102 is connected to the corresponding mounting seat 101, the other end of each telescopic rod 102 extends towards the inner side, one side of each telescopic rod 102, which faces the midpoint of the connecting seat 7, is the inner side, each wedge-shaped limiting block 104 is connected to the other end of the corresponding telescopic rod 102, and each recovery spring 103 is sleeved on the corresponding telescopic rod 102 and located between the mounting seat 101 and the wedge-shaped limiting block 104; two guide sliding grooves are correspondingly formed in the top walls of the two mounting grooves and the rotating groove 41 above the telescopic rod 102, the two guide sliding grooves are symmetrically arranged, a third sliding block is arranged on the top surface of the wedge-shaped limiting block 104, and the third sliding block is arranged in the guide sliding grooves in a sliding mode, so that the wedge-shaped limiting block 104 is in sliding fit with the rotating groove 41 and the mounting grooves; wedge stopper 104 is the four-edge terrace form, promptly the wedge, wedge stopper 104 is little head end towards one side of connecting seat 7, and wedge stopper 104 is big head end dorsad one side of connecting seat 7, and is corresponding, and when connecting seat 7 was located directly over supporting bench 9 at compression test anchor clamps 8 or hardness tester 11, connecting seat 7 offered on the outer wall towards one side of wedge with wedge stopper 104 cartridge and wedge complex wedge groove, the wedge groove is four-edge terrace form equally, and wedge groove is little head end towards connecting seat 7 mid point one side, and the wedge groove is big head end dorsad one side of connecting seat 7 to make wedge stopper 104 remove directly over supporting bench 9 at compression test anchor clamps 8 or hardness tester 11, telescopic link 102 and self-resuming spring 103 extend and promote wedge stopper 104 and remove towards the wedge inslot, until wedge stopper 104 cartridge is in the wedge inslot, the wedge setting makes wedge stopper 104 can accurately get into the wedge inslot. The two driving rods 105 are horizontally arranged and are respectively arranged at the outer sides of the two corresponding ends of the connecting seat 7, the first ends of the two driving rods 105 are hinged to the middle supporting plate 4, the middle part of each driving rod 105 is hinged to the matched wedge-shaped limiting block 104, and the wedge-shaped limiting block 104 moves relative to the wedge-shaped groove along the length direction of the telescopic rod 102 by shaking the second ends of the driving rods 105; when the second end of the driving rod 105 is swung to the side away from the connecting seat 7, the wedge-shaped limiting block 104 moves towards the outside of the wedge-shaped groove, and when the second end of the driving rod 105 is swung to the side of the connecting seat 7, the wedge-shaped limiting block 104 moves towards the inside of the wedge-shaped groove; that is, the two driving levers 105 can swing in the a or b direction (the a direction and the b direction are opposite rotation directions, in this embodiment, the a direction is a counterclockwise direction, and the b direction is a clockwise direction).

When the self-recovery type telescopic rod mechanism is used, the hinged end of the driving rod 105 is a first end, the free end of the driving rod 105 is a second end, the two driving rods 105 use the first ends as pivots, a worker manually pulls the second ends of the two driving rods 105 to swing towards the inner side, namely, one driving rod 105 swings towards the direction a, the other driving rod 105 swings towards the direction b, correspondingly, the self-recovery spring 103 and the telescopic rod 102 extend and push the wedge-shaped limiting block 104 towards the connecting seat 7, the wedge-shaped limiting block 104 moves towards the wedge-shaped groove until the wedge-shaped limiting block 104 is in wedge-shaped fit with the wedge-shaped groove, at the moment, the connecting seat 7 cannot continue to rotate, it should be understood that due to the cooperation of the self-recovery spring 103 and the telescopic rod 102, the two driving rods 105 swing towards the inner side without external force, and the self-recovery spring 103 and the telescopic rod 102 can be realized only by the extending elastic force; when connecting seat 7 needs to be rotated, two actuating levers 105 use first end as the fulcrum, the staff swings towards outside through the second end of manually pulling two actuating levers 105, namely one of them actuating lever 105 swings towards the b direction, when another actuating lever 105 swings towards the a direction, it is corresponding, self-resuming spring 103 and telescopic link 102 shrink, wedge stopper 104 moves outside towards the wedge groove, until wedge stopper 104 all moves outside the wedge groove, at this moment, connecting seat 7 can rotate in order to adjust the position of compression test anchor clamps 8 and hardness tester 11, treat that compression test anchor clamps 8 or hardness tester 11 rotate to the back directly over brace table 9, self-resuming spring 103 and telescopic link 102 promote wedge stopper 104 and wedge groove wedge fit.

Preferably, one side (i.e., the outer side) that two mounting grooves deviate from each other runs through middle support plate 4 so that when driving rod 105 needs to be pulled, through the through arrangement of the side that two mounting grooves deviate from each other, the staff of being convenient for stretches into hand in rotary groove 41 and the mounting groove and pulls driving rod 105.

Compared with the prior art, the utility model, only use an equipment and computer, can accomplish the mechanical properties test and the hardness test to the sample, realize the multiple use, more save space and cost for prior art.

Claims

1. The utility model provides a multipurpose testing machine, includes base, the coexistence post of vertical setting on the base, set up last backup pad and the intermediate strut board between the coexistence post and set up in go up the tensile test anchor clamps and the extensometer that set up between backup pad and the intermediate strut board, its characterized in that: the testing device also comprises a supporting table which is arranged on the base and can be lifted, a connecting seat which is arranged on the bottom surface of the middle supporting plate and can horizontally rotate around the central axis of the connecting seat, and a compression test fixture and a hardness tester which are arranged at two ends of the connecting seat; the connecting seat drives the compression test fixture and the hardness tester to rotate so that the compression test fixture or the hardness tester can be positioned right above the supporting table; and the middle supporting plate is provided with a limiting component which limits the rotation of the connecting seat when the compression test fixture or the hardness tester is positioned right above the supporting table.

2. The multipurpose tester of claim 1, wherein: the bottom surface of the middle supporting plate is provided with a rotating groove with a downward opening, the connecting seat comprises a connecting shaft with the upper end rotatably arranged in the rotating groove and a long connecting plate arranged at the lower end of the connecting shaft, and the compression test fixture and the hardness tester are arranged at two ends of the lower surface of the long connecting plate.

3. The multipurpose tester of claim 2, wherein: the top surface of the rotating groove is provided with an annular sliding groove, and the center of the annular sliding groove is superposed with the extension line of the axis of the connecting shaft; the upper ends of the first sliding support rod and the second sliding support rod are provided with a first sliding part and a second sliding part which are in sliding fit in the annular sliding groove.

4. The multipurpose tester of claim 3, wherein: the top surface of the rotary groove is provided with a plurality of concentric annular sliding grooves with different diameters; the upper surface of the long connecting plate is provided with a first sliding support rod and a second sliding support rod at positions corresponding to the annular sliding grooves, and the upper ends of the first sliding support rod and the second sliding support rod are provided with a first sliding part and a second sliding part which are in sliding fit with the corresponding annular sliding grooves.

5. The multipurpose tester of claim 4, wherein: the first sliding part and the second sliding part are balls which are in sliding fit in the annular sliding groove.

6. The multipurpose tester of claim 5, wherein: the two limiting assemblies are respectively arranged at the outer sides of two ends of the long connecting plate.

7. The multipurpose tester according to claim 6, wherein: the limiting assembly comprises a mounting groove which is arranged on the lower surface of the middle supporting plate and communicated with the rotary groove, a mounting seat which is arranged on the top surface of the mounting groove, a telescopic rod with one end connected to the mounting seat and the other end arranged inwards, a self-recovery spring sleeved on the telescopic rod, a wedge-shaped limiting block arranged on the other end of the telescopic rod, a wedge-shaped groove which is arranged on the outer wall of the connecting seat and matched with the wedge-shaped limiting block in a wedge shape, and a driving rod which is used for driving the wedge-shaped limiting block to move relative to the wedge-shaped groove; when the wedge stopper is located outside the wedge groove, self-resuming spring and telescopic link are in compression state, and when the wedge stopper was located the wedge groove, self-resuming spring and telescopic link were in the state of extending.

8. The multipurpose tester according to claim 7, wherein: the limiting assembly further comprises a guide sliding groove which is arranged on the top surfaces of the mounting groove and the rotating groove and is matched with the wedge-shaped limiting block in shape, one end of the guide sliding groove is close to the mounting seat, and the other end of the guide sliding groove is close to the long connecting plate; the wedge-shaped limiting block is in sliding fit with the guide sliding groove.

9. The multipurpose tester of claim 8, wherein: the driving rod is horizontally arranged, a first end of the driving rod is hinged to the middle supporting plate, the middle of the driving rod is hinged to the wedge-shaped limiting block, and the second end of the driving rod is shaken to enable the wedge-shaped limiting block to move relative to the wedge-shaped groove along the length direction of the telescopic rod; when the second end of the driving rod swings towards one side far away from the long connecting plate, the wedge-shaped limiting block moves towards the outside of the wedge-shaped groove, and when the second end of the driving rod swings towards one side of the long connecting plate, the wedge-shaped limiting block moves towards the inside of the wedge-shaped groove.