CN201653796U

CN201653796U - Tensile test fixture

Info

Publication number: CN201653796U
Application number: CN2010201182659U
Authority: CN
Inventors: 严太早; 欧阳效斌; 刘世莲; 张辉
Original assignee: Anhui Honglu Steel Structure Group Co Ltd
Current assignee: Anhui Honglu Steel Structure Group Co Ltd
Priority date: 2010-02-10
Filing date: 2010-02-10
Publication date: 2010-11-24
Anticipated expiration: 2020-02-10

Abstract

The utility model belongs to the field of fixtures, in particular to a fixture for a stud tensile test. The fixture comprises an upper fixture body and a lower fixture body which are two symmetrical half-structures; cavities used for respectively accommodating stud heads for stud welding and a connecting plate are respectively arranged at the abutting position of the half bodies; openings for accommodating connecting rods for the stud welding are formed by oppositely extending the two cavities; the diameters of the openings are respectively smaller than the inside diameters of the cavities; and clamping rods are respectively arranged at one ends opposite to the direction of the openings. The fixture has simple structure and convenient use, can meet the clamping demands of the stud tensile test, a bolt wedge load test, a nut guarantee load test and other tests and save the investment cost of the equipment.

Description

Tensile test fixture

Technical field

The utility model belongs to the anchor clamps field, is specifically related to a kind of anchor clamps that are used for the nail solder tension test.

Background technology

The nail solder member is mainly used in the steel-reinforced concrete structure of large public building and skyscraper, and its welding quality and mechanical property directly influence building safety.For performance and the quality that detects the nail solder member, must carry out tension test to it, and then analyze its fracture location and the intensity in when fracture, and nail solder belongs to non-standard pulling force sample, the anchor clamps of common cupping machine can't satisfy the test needs that nail solder stretches, and the nail solder unit clamp can not be general in other tension test, and therefore existing anchor clamps versatility is poor, the equipment investment cost height, and use inconvenience.

Summary of the invention

The purpose of this utility model provides a kind of tensile test fixture, its simple structure and can be suitable for the clamping needs of multiple test.

For achieving the above object, the utility model has adopted following technical scheme: a kind of tensile test fixture, comprise upper and lower two clamp bodies, upper and lower clamp body is the two halves formula structure of symmetry, involutory of its halfbody is configured for holding the bolt head of nail solder and the cavity of web joint after being provided with respectively and surrounding, two cavitys are extended with the opening of the connecting rod that is used to hold nail solder in opposite directions, and the diameter of opening is respectively less than described cavity internal diameter, and an end reverse with opening respectively has a clamping bar for the testing equipment clamping.

As shown from the above technical solution, the bolt head and the web joint of nail solder are placed respectively in the cavity of clamp body, perhaps bolt, nut are placed in the cavity of clamp body the halfbody of involutory anchor clamps respectively, then anchor clamps are fixed on the testing machine, can carry out tension test easily; Clamp structure of the present utility model is simple, and is easy to use, and can satisfy the clamping needs of multiple tests such as nail solder tensile test, bolt wedge load test, nut assurance load test, saves equipment investment cost.

Description of drawings

Fig. 1 is a main TV structure synoptic diagram of the present utility model;

Fig. 2 is a front view of going up clamp body;

Fig. 3 is the vertical view of Fig. 2;

Fig. 4 is the left view of lower clamp body;

Fig. 5 is the upward view of Fig. 4;

Fig. 6 is the sectional structure synoptic diagram of sleeve pipe;

Fig. 7 is the vertical view of Fig. 6;

Fig. 8 is the sectional structure synoptic diagram of transition piece;

Fig. 9 is the upward view of Fig. 8;

The use reference diagram of Figure 10 nail solder tension test;

Figure 11 is the use reference diagram that bolt and nut guarantees load test;

Figure 12 utilizes transition piece to carry out the use reference diagram of bolt wedge load test.

Embodiment

Extremely shown in Figure 5 as Fig. 1, a kind of tensile test fixture, comprise, following two

clamp bodies

10,20, on,

lower clamp body

10,20 respectively is the two halves formula structure of symmetry, after being provided with and surrounding, the involutory portion of the halved body of last clamp body 10 is configured for holding the cavity 11 of the bolt head of nail solder, the involutory portion of the halved body of lower clamp body 20 is provided with the cavity 21 of the web joint that is used to hold nail solder, two

cavitys

11,21 openings 12 that are extended with the connecting rod that is used to hold nail solder in opposite directions, 22, and the diameter of opening 12 is less than the internal diameter of cavity 11, the diameter of opening 22 is less than the internal diameter of cavity 21, with opening 12,22 reverse ends respectively have a clamping bar 13 for the testing equipment clamping, 23.

During use, in the

cavity

11,21 that the bolt head and the web joint of nail solder placed upper and

lower clamp body

10,20 respectively, then halfbody is surrounded, and

clamping bar

13,23 is respectively fixed on the testing machine, can carry out the nail solder tension test easily, clamp structure of the present utility model is simple, and is easy to use; And

cavity

11,21 also can be used to hold the nuts and bolt head, carries out bolt wedge load test, nut guarantees load test etc., and therefore, anchor clamps versatility of the present utility model is good, can save equipment investment cost.

On the whole: go up clamp body 10 and be up-small and down-big inverse-T-shaped, top is cylindrical clamping bar 13, and lower cone platform shape is provided with cylindrical cavity 11 in the frustum of a cone, and cavity 11 is used to hold the bolt head of nail solder, and cavity 11 is extended with cylinder open 12 downwards; Big up and small down "T"-shaped of lower clamp body 20, its underpart is cylindrical clamping bar 23, its top is the regular hexahedron shape, establish the corresponding regular hexahedron shape of shape cavity 21 in it, cavity 21 is used to hold the web joint of larger-size nail solder, cavity 21 has extended upward cylinder open 22, and opening 12,22 is used to hold the connecting rod of nail solder; In order to make

clamp body

10,20 is stressed more even, be difficult for destroyed,

cavity

11,21, opening 12,22,

clamping bar

13,23 coaxial arrangement, that is to say: go up clamping bar 13, the frustum of a cone, cavity 11, the dead in line of opening 12 and with the axis of lower clamping bar 23 and the center line of regular hexahedron, the dead in line of opening 22, and above-mentioned axis is positioned at two, in the involutory surface of halved body, the recess that also can be described as symmetry on the halfbody surrounds and constitutes

cavity

11,21 and opening 12,22, xsect is that the half-round bar of semicircle surrounds and constitutes clamping bar 13 on the halfbody, 23, shown in Fig. 2 to 5.

11,21 sizes of the cavity of upper and

lower clamp body

10,20 are big, and 13,23 little shapes of size of clamping bar not only make

clamp body

10,20 stressed even, guarantee anchor clamps intensity and serviceable life, and can save the material use amount, reduce manufacturing cost; In order further to reduce manufacturing cost, the deformation and failure situation of being convenient to observe sample simultaneously, the halfbody involutory surface of cavity 21 vertical perforation lower clamp bodies 20 of the present utility model.

Should be noted that in the technical scheme " on ", the D score position is that vertical testing machine with the draw direction vertical is that example is determined, is not to be strict with that exchange can be put upside down in its position during use, perhaps on horizontal testing machine, the two is horizontally disposed; The shape of upper and

lower clamp body

10,20 also can be because of the test of different size sample needs change, as: can the

cavity

11,21 on the upper and

lower clamp body

10,20 all be provided with bigger or less.

Further, in order to make

clamp body

10,20 halved body interfixes, so that clamping bar is fixed on the testing machine, simultaneously for avoiding the halved body dislocation after involutory, slide, cause the anchor clamps halved body to be subjected to force unbalance, the utility model is arranged with the sleeve pipe 30 of avoiding the two separation on halved body, the use of sleeve pipe 30 is according to the situation of testing machine and actual selection, for example can be last,

lower clamp body

10,20 clamping bar 13, respectively overlap a big or small proper metal pipe on 23, but because cavity 21 positions of lower clamp 20 are hexahedral shape, operating personnel more easily grip and are fixed on the testing machine, so the utility model is for saving manufacturing cost, only on last clamp body 10, set up sleeve pipe 30, specifically: the endoporus of sleeve pipe 30 is a conical bore, and the frustum of a cone external diameter of its aperture and last clamp body 10 coincide, when sleeve pipe 30 covers are lived in clamp body 10, its socket face is the frustum face, and an end of minor diameter up; Such frustum face can be avoided causing cooperating not tight problem because of sleeve pipe 30 uses wearing and tearing, guarantees fixed effect, and its smaller diameter end can prevent at the process middle sleeve 30 that is fixed to testing machine up because of the deadweight landing.Need to prove: the tapering of socket face or perhaps frustum face can not be too big, to guarantee that the frustum of a cone has enough volumes to hold cavity 11, its tapering is generally spent between 10 degree 1, and just the angle of the inner hole surface of the side of the frustum of a cone and sleeve pipe 30 and vertical direction is spent between 10 degree 1; The structure of sleeve pipe 30 such as Fig. 6, shown in Figure 7.

Further, bolt wedge load test, nut guarantee in the load test, because screw size differs, are suitable for the test needs of different size in order to make anchor clamps, and the utility model is provided with transition piece 40; In the middle of the transition piece 40 is the body of rod, there is upper end 41 its upper end, the diameter of upper end 41 is less than the internal diameter of

cavity

11,21, greater than the diameter of opening 12,22, the thickness of the body of rod gets final product can place opening 11,21, its lower end edge length direction is provided with threaded connection hole 421, transition piece 40 upper ends 41 of different size, body of rod size unanimity, threaded connection hole 421 sizes are different, as Fig. 8, shown in Figure 9.Like this, only need the transition piece 40 of width of cloth anchor clamps and some can satisfy the test needs of different size sample, and needn't make many sleeve clamps, can reduce equipment cost greatly.

Transition piece 40 is little shaft-like in big centre, two ends preferably, interlude is a round bar shape, the diameter of its upper end 41 is greater than the diameter of interlude, transition piece 40 lower ends are square contiguous block 42, the centre position of square contiguous block 42, just the geometric center position of lower surface is provided with the threaded connection hole of arranging along the draw direction of test 421, and the size of square contiguous block 42 and threaded connection hole 421 can change according to specimen size; Such shape not only guarantees its intensity, and has farthest saved material usage, has reduced manufacturing cost.

During use, in the threaded connection hole 421 of the transition piece 40 of the screw rod of sample screw-in correspondingly-sized, transition piece 40 upper ends can connect and clamping easily as in the

cavity

11,21.

Below in conjunction with accompanying drawing, use of the present utility model is described.

Figure 10 is the synoptic diagram that carries out the nail solder tension test, the halved body of last clamp body 10 is involutory, clamp the bolt head of nail solder with cavity 11, the halved body of lower clamp body is involutory, clamp web joint with cavity 21, on the frustum of a cone of last clamp body 10, put sleeve pipe 30, two

clamping bars

13,23 are respectively fixed on the testing machine can carry out tension test then; Figure 11 carries out the synoptic diagram that nut guarantees load test, and the nut sample is positioned at the cavity 21 of lower clamp body 20, and bolt head is positioned at the cavity 11 of clamp body 10; Figure 12 is the synoptic diagram of bolt wedge load test, and wedge and bolt head are positioned at the cavity 21 of lower clamp body 20, and the upper end of screw rod is threaded with transition piece 40, and the upper end 41 of transition piece 40 is positioned at the cavity 11 of clamp body 10.

Claims

1. tensile test fixture, it is characterized in that: comprise, following two clamp bodies (10,20), on, lower clamp body (10,20) be symmetrical two halves formula structure, after being provided with respectively and surrounding, involutory of its halfbody is configured for holding the bolt head of nail solder and the cavity (11 of web joint, 21), two cavitys (11,21) be extended with the opening (12 of the connecting rod that is used to hold nail solder in opposite directions, 22), and opening (12,22) diameter is respectively less than described cavity (11,21) internal diameter is with opening (12,22) a reverse end respectively has a clamping bar (13 for the testing equipment clamping, 23).

2. tensile test fixture according to claim 1 is characterized in that: the center line of described cavity (11,21), opening (12,22), clamping bar (13,23) coincides.

3. tensile test fixture according to claim 1 and 2 is characterized in that: be arranged with the sleeve pipe (30) of avoiding the two separation on the described halved body.

4. tensile test fixture according to claim 3, it is characterized in that: the described clamp body (10) of going up is up-small and down-big inverse-T-shaped, top is cylindrical clamping bar (13), the bottom is a circular cone shape, cavity (11) is cylindrical and is positioned at the frustum of a cone that cavity (11) is extended with cylinder open (12) downwards; Big up and small down "T"-shaped of lower clamp body (20), its underpart is cylindrical clamping bar (23), its top is the regular hexahedron shape, cavity (21) be positioned at this hexahedron and shape corresponding with hexahedral profile, cavity (21) has extended upward cylinder open (22).

5. tensile test fixture according to claim 4, it is characterized in that: described anchor clamps comprise transition piece (40), in the middle of the transition piece (40) is the body of rod, its upper end is upper end (41), the diameter of upper end (41) is less than the internal diameter of cavity (11,21), greater than the diameter of opening (12,22), and body of rod lower end edge length direction is provided with threaded connection hole (421).

6. tensile test fixture according to claim 5, it is characterized in that: described transition piece (40) is little shaft-like in big centre, two ends, the diameter of its upper end (41) is greater than the diameter of interlude, the lower end is square contiguous block (42), and the centre position, lower surface of square contiguous block (42) is extended with along the bar length direction and holds screw flight connecting hole (421).

7. tensile test fixture according to claim 4 is characterized in that: described cavity (21) connects lower clamp body (20) along the direction perpendicular to the halfbody involutory surface.

8. tensile test fixture according to claim 4 is characterized in that: described sleeve pipe (30) is the frustum face with the socket face of last clamp body (10), and an end of minor diameter up.