CN109946151B - Stretching detection combined device for embedded channel - Google Patents

Abstract

The invention discloses a tensile detection combined device for pre-embedded channels. It includes an upper fixing device located at the upper end of the testing machine and a lower fixing device located at the lower end of the testing machine. The test piece is disposed between the upper fixing device and the lower fixing device. The upper fixing device includes a fixed body and is used to connect with the upper end of the testing machine. The fixed upper fixing hole, the slot used to accommodate the T-bolt and the convex beam used to fix the main body, the lower fixing device includes the screw hole matching the T-bolt, the fixed base and the lower end of the testing machine. The lower fixing hole can include the embedded channel clamp and the anchor clamp. The tensile testing combination device can realize the overall tensile capacity test of the embedded channel, including T-bolt tensile strength testing, T-type There are three test plans: bolt, channel and single anchor bolt tensile load test, T-bolt and channel mid-span tensile load test. It has exquisite design, simple installation and operation, and high test efficiency.

Description

A combined tensile testing device for embedded channels

Technical field

The invention relates to a combined tensile detection device for embedded channels.

Background technique

According to the standard requirements of TB/T3329-2013 "Embedded Channels in Electrified Railway Catenary Tunnels", tensile tests need to be conducted on embedded channels and T-bolts to detect the tensile strength and grooves of grade 8.8 T-bolts. The load-bearing and tensile capacity of the channel is a test of the overall load-bearing capacity of the embedded channel, and even the safe operation of rail transit, which has very important engineering significance. However, the testing equipment testing items in the existing technology mainly rely on the overall installation tensile test of the embedded channel. The test equipment is huge, the installation is complex, there are many test items, and the efficiency is low. Moreover, the test results are greatly affected by the installation effect of the embedded channel. Large, the results are unstable.

Contents of the invention

In view of the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a tensile detection combination device for embedded channels. It has exquisite design, simple installation and operation, convenient for independent operation by a single person, and high test efficiency; the test principle is simple, less affected by other influencing factors, the test data is reliable, and the stability is high; this tensile testing combination device can achieve T Three test solutions, including tensile strength testing of type bolts, tensile load testing of T-type bolts, channels and single anchors, and mid-span tensile load testing of T-bolts and channels, meet all tensile tests of embedded channels. parameters, greatly simplifying the detection equipment.

In order to solve the above technical problems, the present invention provides a tensile detection combination device for embedded channels. It includes an upper fixing device located at the upper end of the testing machine and a lower fixing device located at the lower end of the testing machine. The test piece is disposed between the upper fixing device and the lower fixing device. The upper fixing device includes a fixed body and is used to connect with the upper end of the testing machine. The fixed upper fixing hole, the slot for accommodating T-bolts and the convex beam for fixing the fixed main body are provided with the upper fixing hole, the clamping slot and the convex beam, the lower part of the convex beam is provided with a clamping slot, and the upper part of the middle of the convex beam Fixed holes are provided; the lower fixing device includes screw holes matching the T-bolts, a fixed base and a lower fixing hole used to fix the lower end of the testing machine. The fixed base is provided with screw holes and lower fixing holes.

The tensile detection combination device for pre-embedded channels may include a pre-embedded channel clamp. The pre-embedded channel clamp includes an upper clamp, a lower clamp, a clamp bolt, an upper clamping slot and a lower clamping slot. The upper clamp is provided with an upper clamp. The lower clamp is provided with a lower clamping slot. The upper clamp and the lower clamp are connected through clamp bolts. The embedded channel clamp is equipped with an upper fixing device and a piece to be tested. The piece to be tested is connected to the lower fixing device through threads.

The tensile detection combined device for pre-embedded channels may also include an anchor clamp, which includes an anchor clamp chuck, an anchor groove, a fixing bolt hole, a left anchor clamp, and a right anchor clamp, The anchor slot includes a left anchor slot and a right anchor slot. The left anchor clamp is equipped with a left anchor slot and an anchor clamp chuck. The right anchor clamp is equipped with a right anchor slot and a fixing bolt hole. The right anchor clamp is equipped with a left anchor slot and a right anchor slot. The bolt passes through the fixing bolt hole and is connected to the left anchor clamp. The anchor clamp is located between the upper fixing device and the piece to be tested. The piece to be tested is connected to the lower fixing device through threads.

Compared with the existing technology, the beneficial effects produced by the present invention are: due to the adoption of the above structure, the tensile detection combination device can realize the overall tensile capacity test of the embedded channel, including T-bolt tensile strength testing, T-type Three test plans, including the tensile load test of bolts, channels and single anchors, and the mid-span tensile load test of T-bolts and channels, meet all the tensile test parameters of embedded channels. It has exquisite design, simple installation and operation, convenient for independent operation by a single person, and high test efficiency; the test principle is simple, less affected by other influencing factors, the test data is reliable, and the stability is high.

Description of the drawings

Figure 1 is a schematic structural diagram of the first embodiment of the present invention;

Figure 2 is an enlarged structural schematic diagram of the fixing device according to the first embodiment of the present invention;

Figure 3 is an enlarged structural schematic diagram of a fixing device according to the first embodiment of the present invention;

In the picture: 10-upper fixing device, 11-fixing body, 12-convex beam, 13-upper fixing hole, 14-card slot, 15-fixing base, 16-lower fixing hole, 17-screw hole, 18-lower fixation Device and 60-piece to be tested (63-T-bolt);

Figure 4 is a schematic structural diagram of the second embodiment of the present invention;

Figure 5 is an enlarged structural schematic diagram of the fixing device according to the second embodiment of the present invention;

Figure 6 is an enlarged structural schematic diagram of an anchor clamp according to the second embodiment of the present invention;

Figure 7 is an enlarged structural schematic diagram of a fixing device according to the second embodiment of the present invention;

In the picture: 20-upper fixing device, 21-fixing body, 22-convex beam, 23-upper fixing hole, 24-card slot, 25-fixing base, 26-lower fixing hole, 27-screw hole, 28-lower fixing device, 50-anchor clamp, 51-left anchor clamp, 52-right anchor clamp, 53-anchor clamp chuck, 54-anchor groove, 55-fixing bolt hole and 70-piece to be tested (71- Anchor rod, 72-channel, 73-T-bolt);

Figure 8 is a schematic structural diagram of a third embodiment of the present invention;

Figure 9 is an enlarged structural schematic diagram of the fixing device according to the third embodiment of the present invention;

Figure 10 is an enlarged structural schematic diagram of a pre-embedded channel clamp according to the third embodiment of the present invention;

Figure 11 is an enlarged structural schematic diagram of a fixing device according to the third embodiment of the present invention;

In the picture: 30-upper fixing device, 31-fixing body, 32-convex beam, 33-upper fixing hole, 34-card slot, 35-fixing base, 36-lower fixing hole, 37-screw hole, 38-lower fixation Device, 40-embedded channel clamp, 41-upper clamp, 42-upper slot, 43-clamp bolt, 44-lower slot, 45-lower clamp and 80-piece to be tested (83-T-bolt, 82 —Channel, two anchor rods).

Detailed ways

The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

Figures 1 to 3 show various structural schematic diagrams of the first embodiment of the present invention. As shown in Figures 1 to 3, the present invention provides a combined tensile testing device for embedded channels. It includes an upper fixing device 10 located at the upper end of the testing machine and a lower fixing device 18 located at the lower end of the testing machine. The test piece 60 is disposed between the upper fixing device 10 and the lower fixing device 18. The upper fixing device 10 includes a fixing body 11, An upper fixing hole 13 for fixing to the upper end of the testing machine, a slot 14 for accommodating T-bolts, and a convex beam 12 for fixing the fixing body 11. The fixing body 11 is provided with an upper fixing hole 13, a slot 14 and The protruding beam 12 is provided with a slot 14 below, and a fixing hole 13 is provided in the middle of the protruding beam 12; the lower fixing device 18 includes a screw hole 17 matching the T-bolt, a fixing base 15 and a fixing base 15 for connecting to the lower end of the testing machine. The fixed lower fixing hole 16 is provided with a screw hole 17 and a lower fixing hole 16 on the fixed base 15 . It has exquisite design, simple installation and operation, convenient for independent operation by a single person, and high test efficiency; the test principle is simple, less affected by other influencing factors, the test data is reliable, and the stability is high. The experimental materials used in the first embodiment of the present invention all use 16Mn steel.

The first implementation mode: T-bolt 63 tensile strength testing, the test installation steps are as follows:

(1) The testing machine is a universal testing machine. The upper fixing device 10 on the upper end of the testing machine is directly fixed on the upper part of the universal testing machine through bolts and upper fixing holes 13. Then, the T-shaped bolts to be tested are set on the In the slot 14 of the bolt;

(2) Insert the T-bolt into the T-bolt slot 14 and position it on the axis of the universal testing machine;

(3) Screw the screw of the T-bolt into the screw hole 17 of the lower fixing device 18 at the lower end of the testing machine;

(4) Install the lower fixing hole 16 of the lower fixing device 18 at the lower end of the testing machine into the lower part of the universal testing machine;

(5) Turn on the testing machine and conduct the test in accordance with the standard requirements of TB/T3329-2013 "Embedded Channels in Electrified Railway Catenary Tunnels".

Figures 4 to 7 show various structural schematic diagrams of the second embodiment of the present invention. As shown in Figures 4 to 7, the present invention provides a combined tensile testing device for embedded channels. It includes an upper fixing device 20 located at the upper end of the testing machine and a lower fixing device 28 located at the lower end of the testing machine. The test piece 70 is disposed between the upper fixing device 20 and the lower fixing device 28. The upper fixing device 20 includes a fixing body 21, An upper fixing hole 23 for fixing to the upper end of the testing machine, a slot 24 for accommodating T-bolts, and a convex beam 22 for fixing the fixing body 21. The fixing body 21 is provided with an upper fixing hole 23, a slot 24 and The protruding beam 22 is provided with a slot 24 below, and a fixing hole 23 is provided in the middle of the protruding beam 22; the lower fixing device 28 includes a screw hole 27 matching the T-bolt, a fixing base 25 and a fixing base 25 for connecting to the lower end of the testing machine. The fixed lower fixing hole 26 is provided with a screw hole 27 and a lower fixing hole 26 on the fixed base 25. The tensile testing combined device for embedded channels may also include an anchor clamp 50 , which includes an anchor clamp chuck 53 , an anchor slot 54 , a fixing bolt hole 55 , and a left anchor clamp 51 , the right anchor clamp 52, the anchor slot 54 includes a left anchor slot 54 and a right anchor slot 54, the left anchor clamp 51 is provided with a left anchor slot 54 and an anchor clamp chuck 53, and the right anchor clamp 52 is provided with a left anchor slot 54 and an anchor clamp chuck 53. Set up a right anchor slot 54 and a fixing bolt hole 55. The right anchor clamp 52 is connected to the left anchor clamp 51 by a bolt passing through the fixing bolt hole 55. The anchor clamp 50 is located between the upper fixing device 20 and the test piece 70. During this time, the piece to be tested 70 is connected to the lower fixing device 28 through threads. It has exquisite design, simple installation and operation, convenient for independent operation by a single person, and high test efficiency; the test principle is simple, less affected by other influencing factors, the test data is reliable, and the stability is high. The experimental materials used in the second embodiment of the present invention all use 16Mn steel.

The second implementation mode: T-bolt 73-channel 72-single anchor 71 axis tensile load test, the test installation operation steps are as follows:

(1) The testing machine is a universal testing machine, and the upper fixing device 20 on the upper end of the testing machine is directly fixed on the upper part of the universal testing machine through bolts and upper fixing holes 23;

(2) Loosen the fixing bolts of the anchor clamp 50, disassemble the anchor clamp 50, install the embedded channel anchor, combine the left anchor clamp 51 and the right anchor clamp 52, and tighten the fixing bolts;

(3) Insert the anchor clamp chuck 53 into the slot 24 of the upper fixing device 20 of the testing machine for accommodating T-bolts. The anchor clamp 50 is provided with an anchor rod, and the anchor rod 56 is provided with a pre-embedded channel. The pre-embedded channel is provided with a pre-embedded channel clamping slot 24;

(4) Slide the T-bolt into the embedded channel slot 24 and position it on the axis of the universal testing machine;

(5) Screw the T-shaped bolt into the screw hole 27 of the lower fixing device 28 at the lower end of the testing machine;

(6) Install the lower fixing hole 26 of the lower fixing device 28 at the lower end of the testing machine into the lower part of the universal testing machine;

(7) Turn on the testing machine and conduct the test in accordance with the standard requirements of TB/T3329-2013 "Embedded Channels in Electrified Railway Catenary Tunnels".

Figures 8 to 11 show various structural schematic diagrams of the third embodiment of the present invention. As shown in Figures 8 to 11, the present invention provides a combined tensile testing device for embedded channels. It includes an upper fixing device 30 located at the upper end of the testing machine and a lower fixing device 38 located at the lower end of the testing machine. The test piece 80 is disposed between the upper fixing device 30 and the lower fixing device 38. The upper fixing device 30 includes a fixing body 31, An upper fixing hole 33 for fixing to the upper end of the testing machine, a slot 34 for accommodating T-bolts, and a convex beam 32 for fixing the fixing body 31. The fixing body 31 is provided with an upper fixing hole 33, a slot 34 and The protruding beam 32 is provided with a slot 34 below, and an upper fixing hole 33 is provided in the middle of the protruding beam 32; the lower fixing device 38 includes a screw hole 37 matching the T-bolt, a fixing base 35 and a fixing base 35 for connecting to the lower end of the testing machine. The fixed lower fixing hole 36 is provided with a screw hole 37 and a lower fixing hole 36 on the fixed base 35. The tensile testing combined device for pre-embedded channels may include a pre-embedded channel clamp 40. The pre-embedded channel clamp 40 includes an upper clamp 41, a lower clamp 45, a clamp bolt 43, an upper slot 42 and a lower clamp. slot 44, the upper clamp 41 is provided with an upper slot 42, the lower clamp 45 is provided with a lower slot 44, the upper clamp 41 and the lower clamp 45 are connected by clamp bolts 43, and the embedded channel clamp 40 is provided in the upper fixing device 30 and The piece to be tested 80 is connected to the lower fixing device 38 through threads. It has exquisite design, simple installation and operation, convenient for independent operation by a single person, and high test efficiency; the test principle is simple, less affected by other influencing factors, the test data is reliable, and the stability is high. The experimental materials used in the third embodiment of the present invention all use 16Mn steel.

The third implementation mode: T-bolt 83-channel 82 mid-span (T-bolt 83-channel 82-two anchors (not shown in the figure)) tensile load test, the test installation operation steps are as follows:

(1) The testing machine is a universal testing machine, and the upper fixing device 30 on the upper end of the testing machine is directly fixed on the upper part of the universal testing machine through bolts and upper fixing holes 33;

(2) Insert the convex beam 12 of the upper fixing device 30 into the upper slot 42 of the pre-embedded channel clamp 40, and place one pre-embedded channel clamp 40 at both ends of the upper fixing hole 33 of the upper fixing device 30, and distribute them symmetrically; The embedded channel is located between the upper clamping slot 42 and the lower clamping slot 44.

(3) Place the embedded channel at the lower end of the embedded clamp. The embedded channel is located between the upper slot 42 and the lower slot 44, and tighten the clamp bolts 43;

(4) Slide the T-shaped bolt into the embedded channel slot 34 and position it on the axis of the universal testing machine;

(5) Screw the T-shaped bolt into the screw hole 37 of the lower fixing device 38 at the lower end of the testing machine;

(6) Install the lower fixing hole 36 of the lower fixing device 38 at the lower end of the testing machine into the lower part of the universal testing machine;

(7) Turn on the testing machine and conduct the test in accordance with the standard requirements of TB/T3329-2013 "Embedded Channels in Electrified Railway Catenary Tunnels".

The specific embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above-mentioned embodiments, and various changes can be made thereto within the scope of knowledge of those of ordinary skill in the art.

Claims (6)

1. A combined tensile testing device for embedded channels, which includes an upper fixing device (10; 20; 30) located at the upper end of the testing machine and a lower fixing device (18; 28; 28) located at the lower end of the testing machine; 38), a test piece (60) is provided between the upper fixing device (10; 20; 30) and the lower fixing device (18; 28; 38), characterized in that: the upper fixing device (10; 20; 30) It includes a fixing body (11; 21; 31), an upper fixing hole (13; 23; 33) for fixing with the upper end of the testing machine, a slot (14; 24; 34) for accommodating T-bolts and a The fixed main body (11; 21; 31) is fixed with a convex beam (12; 22; 32), and the fixed main body (11; 21; 31) is provided with fixing holes (13; 23; 33) and clamping grooves (14; 24; 34) and the protruding beam (12; 22; 32), the protruding beam (12; 22; 32) is provided with a slot (14; 24; 34) below, and a fixing hole is provided in the middle of the protruding beam (12; 22; 32); The fixing device (18; 28; 38) includes screw holes (17; 27; 37) that match the T-bolts, a fixed base (15; 25; 35) and a lower fixing hole (15; 25; 35) used to fix the lower end of the testing machine. 16; 26; 36), the fixed base (15; 25; 35) is provided with screw holes (17; 27; 37) and lower fixing holes (16; 26; 36); the above is used for stretching the embedded channel The detection combination device includes a pre-embedded channel clamp (40), which includes an upper clamp (41), a lower clamp (45), a clamp bolt (43), an upper slot (42) and a lower clamp. The upper clamp (41) is provided with an upper clamp slot (42), and the lower clamp (45) is provided with a lower clamp slot (44). The upper clamp (41) and the lower clamp (45) pass through the clamp bolt (43) Connected, the embedded channel fixture (40) is equipped with an upper fixing device (10; 20; 30) and a piece to be tested (60), and the piece to be tested (60) is connected to the lower fixing device (18; 28; 38) through threads connected; the tensile detection combination device for pre-embedded channels includes an anchor clamp (50), and the anchor clamp (50) includes an anchor clamp chuck (53), an anchor groove (54), Fixed bolt hole (55), left anchor clamp (51), right anchor clamp (52), anchor slot (54) includes left anchor slot (54) and right anchor slot (54), left anchor clamp (51) is provided with a left anchor groove (54) and an anchor clamp chuck (53), and the right anchor clamp (52) is provided with a right anchor groove (54) and a fixing bolt hole (55). (52) is connected to the left anchor clamp (51) by passing the bolt through the fixing bolt hole (55). The anchor clamp (50) is located between the upper fixing device (10; 20; 30) and the test piece (60) During the test, the piece to be tested (60) is connected to the lower fixing device (18; 28; 38) through threads; insert the anchor clamp chuck (53) into the upper fixing device (10; 20; 30) at the upper end of the testing machine. In the slot (14; 24; 34) that accommodates the T-bolt, the anchor clamp (50) is provided with an anchor rod, the anchor rod is provided with a pre-embedded channel, and the pre-embedded channel is provided with a pre-embedded channel latching slot (14; 24;34). 2. The tensile detection combined device for pre-embedded channels according to claim 1, characterized in that: the T-bolt is inserted into the T-bolt slot (14; 24; 34) and positioned with the universal on the axis of the testing machine. 3. The tensile detection combined device for pre-embedded channels according to claim 1, characterized in that: the convex beam (12; 22; 32) of the upper fixing device (10; 20; 30) is embedded in the pre-embedded channel. A pre-embedded channel clamp (40) is placed at both ends of the upper clamping slot (42) of the channel clamp (40), and the upper fixing hole (13; 23; 33) of the upper fixing device (10; 20; 30), and Symmetrically distributed; the pre-embedded channel is located between the upper clamping slot (42) and the lower clamping slot (44). 4. The tensile testing combined device for pre-embedded channels according to any one of claims 1 to 3, characterized in that: the test piece (60; 70; 80) is a T-shaped bolt (63 ;73;83), T-bolt (63;73;83)-channel (72;82)-single anchor (71) or T-bolt (63;73;83)-channel (72;82) —Two anchors (71). 5. The tensile testing combined device for pre-embedded channels according to any one of claims 1-3, characterized in that: the testing machine is a universal testing machine, and the upper end of the testing machine is fixed by a fixing device (10; 20; 30) is directly fixed on the upper part of the universal testing machine through bolts and upper fixing holes (13; 23; 33). 6. The tensile testing combined device for pre-embedded channels according to any one of claims 1-3, characterized in that: the lower fixing hole of the lower fixing device (18; 28; 38) at the lower end of the testing machine is (16; 26; 36) is installed into the lower part of the universal testing machine.