CN2466628Y

CN2466628Y - Material tester

Info

Publication number: CN2466628Y
Application number: CN 01211790
Authority: CN
Inventors: 姚致国
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-23
Filing date: 2001-02-23
Publication date: 2001-12-19
Anticipated expiration: 2011-02-23

Abstract

The utility model relates to a material testing machine used for determining material properties, comprising a frame composed of upper and lower cross beams and a vertical post. Two slidable pull rods penetrate the upper cross beam, and the upper and lower ends of the pull rods are respectively fixed with a top beam and a work bench. The work bench and the lower cross beam are correspondingly provided with a pair of clamping heads, and the upper cross beam is provided with a speed reducer and a screw jack. A pressure transducer is arranged between the top end of the screw jack and the top beam and is connected with an electronic force display instrument. The utility model has the advantages of simple structure, convenient operation and low cost. The electronic force measurement and display is used, and high measuring precision can be achieved.

Description

Material Testing Machine

The utility model relates to the employed Material Testing Machine of a kind of mensuration material property.

At present, the metal material that Foundry Works cast out in order to reach the standard of use, all must carry out the mechanical property test of tension and compression, bending to it, must be equipped with Material Testing Machine like this.Existing employed Material Testing Machine complex structure, cost an arm and a leg, be difficult to promote, purchase for middle-size and small-size Foundry Works impotentia, cause many tests that this is done not done, influenced the quality of product, and the test that some are compelled to do, have to arrive outside the factory and do, like this since, not only untimely, inconvenient again, also to take a lot of money.

The purpose of this utility model provides a kind of Material Testing Machine that a kind of measuring accuracy is accurate, simple in structure, cost is low.

The utility model is achieved in that a kind of Material Testing Machine, comprise, the framework that sill and column constitute, pass through two slidably pull bars on the entablature, on the pull bar, the lower end is affixed with back timber and worktable respectively, be provided with Bending support above the worktable, relative on the following and sill of worktable a pair of chuck is housed, be provided with crooked pressure head below the described entablature, be fixed with reductor above, the output terminal of this reductor is linked to each other with screw jack by shaft coupling, input belt pulley on the reductor is linked to each other with the manual shaft pulley that has rocking handle by belt, it is characterized in that: between the top of screw jack and the back timber pressure transducer is housed, the signal output part on this pressure transducer is linked to each other with electronic dynamometry by lead.Reductor is a cycloidal planetary gear speed reducer, and the input belt pulley on this reductor is a double grooved pulley, and interior sheave links to each other with motor pulley by belt.

Described chuck comprises chuck pull bar, conical ring lock tube and is installed in two folder lobes in the conical ring lock tube, and the endoporus that the clamping sample end on two folder lobes is constituted is a circular conical surface.

The utility model is mainly used in the metal material tension and compression of Foundry Works, crooked mechanical property test, two frameworks that primary structure is made up of lower and upper cross-member, column and back timber, worktable, pull bar, be fixed with on the entablature that spiral is very heavy to link to each other with reductor, be furnished with manual loading and unloaded motor jacking gear on the input belt pulley of reductor, between described back timber and the screw jack pressure transducer is housed, and links to each other with electronic dynamometry by lead.During test material, be held in material clip on two chucks or be placed on the Bending support of worktable, because the rise of screw jack, driving the rising of the worktable that links to each other with pull bar, thus driving with worktable that pull bar links to each other on move, at this moment, sample tension on the chuck, sample on the bearing is subjected to the pressure of pressure head and bending, and simultaneously, the signal on the pressure transducer is delivered on the electronic dynamometry.

Structure of the present utility model is simple especially, operation is very convenient, cheap, can both bear for middle-size and small-size Foundry Works.Because the utility model adopts is the electronics dynamometry, show and power can obtain very high measuring accuracy.The utility model is provided with the fast lifting motor, and when unloaded, but the worktable fast lifting obtains higher work efficiency.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is the utility model master TV structure synoptic diagram.

Fig. 2 is that the running part structural representation is looked on Fig. 1 left side.

Fig. 3 is that chuck of the present utility model amplifies the sectional structure synoptic diagram.

See also Fig. 1.As can be seen from the figure, the utility model comprises lower and upper cross-member 24, the framework that 2 and two root posts 3 constitute, sill 2 is fixed on the low seat 1, pass through two slidably pull bars 11 on the entablature 24, the upper and lower side of pull bar 11 is affixed with back timber 14 and worktable 5 respectively, following and the sill 2 of worktable 5 top relative is equipped with a pair of chuck 4, be provided with Bending support 6 above the worktable 5, be provided with a crooked pressure head 8 below the described entablature 24, be fixed with reductor 10 above, this reductor is a cycloidal planetary gear speed reducer, and its output terminal links to each other with screw jack 12, and input end is connected with the manual shaft pulley 20 that has rocking handle 22 by belt 18.Between the top of described screw jack 12 and the back timber 14 pressure transducer 13 is housed, the signal output part on this pressure transducer 13 is linked to each other with electronic dynamometry 9 by lead.Referring to Fig. 2, as can be seen from Figure 2, the reductor belt pulley 19 on the reductor is a double grooved pulley, and one of them sheave links to each other with motor pulley 16 with belt 17.Referring to Fig. 3, Fig. 3 is the chuck amplification view, and this chuck is by chuck pull bar 30, conical ring lock tube 29 and be used for clamp gripper pull bar 30, tensile sample 27 two folder lobes 28 and form, and the endoporus that these two clamping sample ends that press from both sides on the lobe 28 are constituted is a circular conical surface.When test stretches, conical ring lock tube 29 is return, two folder lobe 28 cards are leaned against on tested tensile sample 27 and the chuck pull bar 30, entangle with conical ring lock tube 29 again, can clamp tensile sample 27; During bending test, tested sample 7 is positioned on the Bending support 6.At this moment, hold handle 23 and rotate, rocking handle 22 drives manually that axle 26 rotates, and is delivered to output shaft on the reductor 10 by belt 18, its output shaft drives the input shaft rotation of screw jack 12 again by shaft coupling 25, the screw mandrel that drives lifting jack 12 rises and is pushing pressure transducer 13, and back timber 14 also rises thereupon, the rising of back timber 14, driving worktable 5 by pull bar 11 again rises, when worktable 5 rose, if between two chucks 4 during device tensile sample 27, tensile sample 27 was with regard to tension; The bend specimen of placing on the Bending support 67 is realized three point bending test with regard to the pressure of pressure head 8 by bending.Simultaneously, the pressure transducer 13 that is installed between back timber 14 and the screw jack 12 passes to signal on the electronic dynamometry 9 by lead, and operating load is shown.Electronic dynamometry 9 can have computer interface, and test figure is exported to Computer Processing and printing.When unloaded, operate lifting switch 21, motor 15 can pass through the rotation of drive reductor 10 fast of motor pulley 16, belt 17, reductor belt pulley 19, thereby fast lifting worktable 5 obtains higher work efficiency.

Claims

1, a kind of Material Testing Machine, comprise, sill (24,2) and the framework that constitutes of column (3), pass through two slidably pull bars (11) on the entablature (24), on the pull bar (11), the lower end is affixed with back timber (14) and worktable (5) respectively, be provided with Bending support (6) above the worktable (5), the relative a pair of chuck (4) that is equipped with on the following and sill (2) of worktable (5), be provided with crooked pressure head (8) below the described entablature (24), be fixed with reductor (10) above, the output terminal of this reductor (10) is linked to each other with screw jack (12) by shaft coupling (25), input belt pulley (19) on the reductor (10) is linked to each other with the manual shaft pulley (20) that has rocking handle (22) by belt (18), it is characterized in that: between the top of screw jack (12) and the back timber (14) pressure transducer (13) is housed, the signal output part on this pressure transducer (13) is linked to each other with electronic dynamometry (9) by lead.

2, Material Testing Machine according to claim 1 is characterized in that: reductor (10) is a cycloidal planetary gear speed reducer, and the input belt pulley (19) on this reductor (10) is a double grooved pulley, and interior sheave links to each other with motor pulley (16) by belt (17).

3, Material Testing Machine according to claim 1 and 2, it is characterized in that: described chuck (4) comprises chuck pull bar (30), conical ring lock tube (29) and is installed in two interior folder lobes (28) of conical ring lock tube (29) that the endoporus that the clamping sample end on two folder lobes (28) is constituted is a circular conical surface.