CN106323738B

CN106323738B - Fastener fatigue test loading frame suitable for various loading angles

Info

Publication number: CN106323738B
Application number: CN201610779564.9A
Authority: CN
Inventors: 尉大业; 张磊; 李一兵; 韦勇
Original assignee: Anhui Chaohu Casting Factory Co ltd
Current assignee: Anhui Chaohu Casting Factory Co ltd
Priority date: 2016-08-30
Filing date: 2016-08-30
Publication date: 2023-11-21
Anticipated expiration: 2036-08-30
Also published as: CN106323738A

Abstract

The invention discloses a fastener fatigue test loading frame suitable for various loading angles, which comprises a bearing beam, two sliding blocks, two lug seat welding pieces, two limiting blocks and two fixed shafts, wherein the bearing beam is transversely provided with rectangular square holes which are bilaterally symmetrical, the sliding blocks are respectively assembled in the rectangular square holes, the two fixed shafts respectively penetrate through the two sliding blocks, the top ends of the two lug seat welding pieces are connected with the bearing beam into a whole through the fixed shafts, the tail parts of the fixed shafts penetrate through the lug seat welding pieces and are provided with retaining shaft sleeves, the bottom ends of the lug seat welding pieces are respectively provided with a contact angle, the bottom surfaces of the bearing beam are symmetrically provided with the two limiting blocks, the side surfaces of the limiting blocks are manufactured into corresponding oblique angles, the bottom surfaces of the two ends of the bearing beam are respectively provided with a long bolt, and the bottoms of the long bolts are respectively provided with nuts for limiting the opening angles of the lug seat welding pieces. The invention has the beneficial effects of convenient adjustment and contribution to improving the test efficiency.

Description

Fastener fatigue test loading frame suitable for various loading angles

Technical Field

The invention relates to a fastener fatigue test loading frame suitable for various loading angles, which is mainly applied to the field of fastener detection equipment.

Background

Rail fasteners are important components in track construction and their primary function is to maintain a secure attachment of the rail to the under-rail foundation. In order to verify the capability of ensuring safe operation and compare the advantages and disadvantages of different fastener operation performances under the same conditions, the assembly fatigue test of the fastener is required to be carried out according to the railway industry standard. The method comprises the steps of assembling the fasteners on a single sleeper, applying dynamic vertical force and transverse force to the fasteners on two sides of the sleeper by using a loading frame, simulating the actual stress condition of the fasteners, and obtaining test data after a specified number of tests are carried out.

Because the line condition that the fastener is suitable for is different, the vertical force and the transverse force that the fastener bore are also different, when carrying out the equipment fatigue test on the sleeper, the angle of loading frame needs to carry out certain adjustment, in order to simulate the fastener stress state under the different line conditions, but because the track gauge 1435mm after the fastener equipment is fixed value, the angle of adjusting loading frame just needs to change the position of fixed axle, current loading frame is considered the atress great, the fixed axle position is all unable to be adjusted, a pair of loading frame can only adopt an angle to test like this, the test room is in order to satisfy the equipment fatigue test requirement of different fasteners, not only occupy valuable test room place, increased the cost again, need carry out necessary improvement.

Disclosure of Invention

The invention aims to solve the technical problem of providing a fastener fatigue test loading frame which is suitable for various loading angles, and adopts a loading cross beam with the position of a fixed shaft adjustable.

The invention is realized by the following technical scheme.

The utility model provides a fastener fatigue test loading frame of adaptation multiple loading angle, including the load beam, two sliders, two ear seat weldments, two stopper, two fixed axles, above-mentioned load beam transversely sets up and has seted up bilateral symmetry's rectangle square hole, all be equipped with the slider in the rectangle square hole, two above-mentioned fixed axles all pass two sliders respectively, the top of two above-mentioned ear seat weldments all is connected into an organic wholely with above-mentioned load beam through above-mentioned fixed axle, above-mentioned fixed axle afterbody wears out above-mentioned ear seat weldment and installs the backing shaft cover, the afterbody of above-mentioned backing shaft cover and above-mentioned fixed axle radially has corresponding aperture, insert the cotter in the aperture, the bottom of above-mentioned ear seat weldment all is provided with the contact angle, the bottom symmetry of above-mentioned load beam sets up two above-mentioned stoppers, corresponding oblique angle is made to the side of above-mentioned stopper, the bottom surface at the both ends of above-mentioned load beam all is provided with the stock, the bottom surface of above-mentioned stock bottom is provided with the nut and prescribes a limit to the angle of above-mentioned ear seat weldment.

Further, the positioning blocks are all provided with screws to be fixed on the bearing cross beam.

Further, a flat washer is arranged at the nut arranged at the bottom of the long bolt.

Further, a spring washer is disposed between the contact angle and the ear mount weldment.

Further, the spring washer is provided with a screw fixed to the ear mount welding member.

The invention has the beneficial effects that:

the fatigue test of various angles can be completed by only one set of loading frame and corresponding matched sliding blocks in the laboratory, so that the space and the cost of the laboratory are saved, the sliding blocks are easy to replace, the adjustment is convenient, and the improvement of the test efficiency is facilitated.

Drawings

FIG. 1 is a perspective view of a fastener fatigue test loading rack adapted to various loading angles according to the present invention;

FIG. 2 is a schematic front view of a fastener fatigue test loading frame accommodating multiple loading angles according to the present invention;

FIG. 3 is a schematic side view of a fastener fatigue test loading stand accommodating multiple loading angles in accordance with the present invention;

FIG. 4 is a schematic view of the use of the fastener fatigue test loading frame of the present invention adapted to various loading angles.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples.

Referring to fig. 1-3, the fastener fatigue test loading frame suitable for various loading angles comprises a bearing beam 1, two sliding blocks 2, two lug seat welding pieces 3, two limiting blocks 11 and two fixed shafts 12, wherein the bearing beam 1 is transversely provided with rectangular square holes which are bilaterally symmetrical, the sliding blocks 2 are respectively assembled in the rectangular square holes, the two fixed shafts 12 respectively penetrate through the two sliding blocks 2, the sliding blocks are used in pairs in a plurality of types, and when the sliding blocks are symmetrically installed in the rectangular square holes on two sides of the loading beam, the sliding blocks can correspond to different fixed shaft positions. When the test angle needs to be adjusted, only the hole position of the fixed shaft on the bearing beam needs to be changed, and at the moment, the sliding blocks of corresponding types are replaced, and the sliding blocks are symmetrically installed.

The top ends of the two ear seat welding pieces 3 are connected with the bearing cross beam 1 into a whole through the fixed shaft 12, the tail part of the fixed shaft 12 penetrates out of the ear seat welding pieces 3 and is provided with a retaining shaft sleeve 13, the tail parts of the retaining shaft sleeve 13 and the fixed shaft 12 are radially provided with corresponding small holes, and cotter pins 14 are inserted into the small holes and prevent the axial displacement of the fixed shaft.

The bottom ends of the lug seat welding pieces 3 are respectively provided with a contact angle 9, and the lug seat welding pieces are contacted with the rail head of the steel rail in a contact angle test, so that the contact requirement of a loading point is ensured.

Two limiting blocks 11 are symmetrically arranged on the bottom surface of the bearing beam 1, corresponding oblique angles are formed on the side surfaces of the limiting blocks 11, and when the angles of the ear seat welding pieces and the oblique angles of the side surfaces of the limiting blocks are identical, the requirements of different angles of fatigue tests are met.

Long bolts 4 are arranged on the bottom surfaces of the two ends of the bearing beam 1, and nuts 5 are arranged at the bottoms of the long bolts 4 to limit the opening angle of the lug welding pieces 3. The angle between the lug seat welding piece and the loading cross beam is adjusted by the long bolt when the loading frame is adjusted, and when the lug seat welding piece angle is matched with the side oblique angle of the limiting block, the loading frame angle is fixed by tightening the upper nut and the lower nut, so that the test can be performed.

The positioning blocks are all provided with screws 10 which are fixed on the bearing cross beam 1.

A flat washer 6 is arranged at the nut 5 arranged at the bottom of the long bolt 4.

A spring washer 8 is arranged between the contact angle 9 and the ear seat welding member 3.

The spring washer 8 is provided with a screw 7 fixed to the ear mount welding 3.

The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and implement it without limiting the scope of the present invention. All equivalent changes or modifications made in accordance with the spirit of the present invention should be construed to be included in the scope of the present invention.

Claims

1. The utility model provides a fastener fatigue test loading frame that adapts to multiple loading angle, including the load beam, two sliders, two ear seat weldments, two stoppers, two fixed axles, the load beam transversely sets up and has seted up bilateral symmetry's rectangle square hole, all is equipped with the slider in the rectangle square hole, two fixed axles all pass two sliders respectively, two the top of ear seat weldment all passes through the fixed axle with the load beam is connected into an organic whole, the fixed axle afterbody wears out ear seat weldment and installs the backing shaft sleeve, the backing shaft sleeve with the afterbody radial of fixed axle has corresponding aperture, insert the cotter in the aperture, the bottom of ear seat weldment all is provided with the contact angle, the bottom surface symmetry of load beam sets up two stoppers, the stopper side makes corresponding oblique angle, the bottom surface at the both ends of load beam all is provided with the stock bolt, the stock bolt bottom is provided with the nut and prescribes a limit the angle of ear seat weldment, the stopper all is provided with the screw and fixes the load beam, the department that the stock bolt bottom is provided with the plain-bolt, contact angle and the ear seat weldment is provided with the spring washer in the spring washer is fixed in the ear seat between the spring washer; when the sliding blocks are symmetrically arranged in rectangular square holes at two sides of the bearing cross beam, different fixing shaft positions can be corresponding; when the test angle is required to be adjusted, only the hole position of the fixed shaft on the bearing beam is required to be changed, and at the moment, the sliding blocks of corresponding types are replaced, and the sliding blocks are symmetrically installed; when the angle of the ear seat welding piece is matched with the side bevel angle of the limiting block, the requirements of different angles of the fatigue test are met; the angle between the lug seat welding piece and the bearing cross beam is adjusted by the long bolt when the loading frame is adjusted, and when the lug seat welding piece angle is matched with the side oblique angle of the limiting block, the loading frame angle is fixed by tightening the upper nut and the lower nut, so that the test can be performed.