CN109946151B - Stretching detection combined device for embedded channel - Google Patents
Stretching detection combined device for embedded channel Download PDFInfo
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- CN109946151B CN109946151B CN201910180881.2A CN201910180881A CN109946151B CN 109946151 B CN109946151 B CN 109946151B CN 201910180881 A CN201910180881 A CN 201910180881A CN 109946151 B CN109946151 B CN 109946151B
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Abstract
The invention discloses a stretching detection combined device for a pre-buried channel. The tensile testing combined device can realize the test of the integral tensile capacity of the embedded channel and comprises three test schemes including T-shaped bolt tensile strength detection, T-shaped bolt and channel and single anchor rod tensile load test, T-shaped bolt and channel midspan tensile load test and the like. The test device has the advantages of exquisite design, simple installation and operation and higher test efficiency.
Description
Technical Field
The invention relates to a stretching detection combined device for a pre-buried channel.
Background
According to the standard requirement of TB/T3329-2013 embedded channel in an electrified railway contact network tunnel, the embedded channel and the T-shaped bolt are required to be subjected to a tensile test for detecting the tensile strength of the 8.8-level T-shaped bolt and the bearing and stretching capacity of the channel, so that the method is used for detecting the integral bearing capacity of the embedded channel and even has very important engineering significance in the safe operation of rail transit. However, the detection items of the detection equipment in the prior art are mainly subjected to the integral installation tensile test of the embedded channel, so that the test equipment is huge, the installation is complex, the test items are more, the efficiency is lower, the test result is greatly influenced by the installation effect of the embedded channel, and the result is unstable.
Disclosure of Invention
Aiming at the prior art, the invention aims to provide a stretching detection combined device for embedding a channel. The device has the advantages of exquisite design, simple installation and operation, convenience for independent operation by a single person and higher test efficiency; the test principle is simple, the influence of other influencing factors is less, the test data is reliable, and the stability is higher; the tensile detection combined device can realize three test schemes of T-shaped bolt tensile strength detection, T-shaped bolt and channel and single anchor rod tensile load test, T-shaped bolt and channel midspan tensile load test, and the like, meets all tensile test parameters of the embedded channel, and greatly simplifies detection instrument equipment.
In order to solve the technical problems, the invention provides a stretching detection combined device for a pre-buried channel. The test piece to be tested is arranged between the upper fixing device and the lower fixing device, the upper fixing device comprises a fixing main body, an upper fixing hole used for being fixed with the upper end of the test machine, a clamping groove used for accommodating a T-shaped bolt and a convex beam used for fixing the fixing main body, the fixing main body is provided with the upper fixing hole, the clamping groove and the convex beam, the clamping groove is arranged below the convex beam, and the fixing hole is arranged above the middle of the convex beam; the lower fixing device comprises a screw hole matched with the T-shaped bolt, a fixing base and a lower fixing hole used for being fixed with the lower end of the testing machine, and the screw hole and the lower fixing hole are formed in the fixing base.
This a tensile detection composite set for pre-buried channel can include pre-buried channel anchor clamps, pre-buried channel anchor clamps include anchor clamps, lower anchor clamps, anchor clamps bolt, go up draw-in groove and lower draw-in groove, go up the anchor clamps and establish the draw-in groove, establish down the draw-in groove on the lower anchor clamps, go up anchor clamps and be connected through anchor clamps bolt with lower anchor clamps, establish in the pre-buried channel anchor clamps at last fixing device and test piece that awaits measuring, the test piece that awaits measuring is connected with lower fixing device through the screw thread.
This a tensile detection composite set for pre-buried channel can also include anchor rod anchor clamps, anchor rod anchor clamps include anchor rod anchor clamps chuck, anchor rod groove, fixing bolt hole, left anchor rod anchor clamps, right anchor rod anchor clamps, and the anchor rod groove includes left anchor rod groove and right anchor rod groove, establishes left anchor rod groove and anchor rod anchor clamps chuck on the left anchor rod anchor clamps, establishes right anchor rod groove and fixing bolt hole on the right anchor rod anchor clamps, and right anchor rod anchor clamps pass the fixing bolt hole through the bolt and are connected with left anchor rod anchor clamps, and anchor rod anchor clamps are established between last fixing device and test piece that awaits measuring, and the test piece that awaits measuring is connected with lower fixing device through the screw thread.
Compared with the prior art, the invention has the beneficial effects that: due to the adoption of the structure, the tensile detection combined device can realize the integral tensile capacity test of the embedded channel, and comprises three test schemes of T-shaped bolt tensile strength detection, T-shaped bolt and channel and single anchor rod tensile load test, T-shaped bolt and channel midspan tensile load test and the like, and all tensile test parameters of the embedded channel are met. The device has the advantages of exquisite design, simple installation and operation, convenience for independent operation by a single person and higher test efficiency; the test principle is simple, the influence of other influencing factors is less, the test data is reliable, and the stability is higher.
Drawings
FIG. 1 is a schematic diagram of the composition and structure of a first embodiment of the present invention;
FIG. 2 is an enlarged schematic view of the fixing device according to the first embodiment of the present invention;
FIG. 3 is an enlarged schematic view of the fixing device according to the first embodiment of the present invention;
in the figure: 10-upper fixing device, 11-fixing main body, 12-convex beam, 13-upper fixing hole, 14-clamping groove, 15-fixing base, 16-lower fixing hole, 17-screw hole, 18-lower fixing device and 60-test piece (63-T bolt) to be tested;
FIG. 4 is a schematic diagram of the composition structure of a second embodiment of the present invention;
FIG. 5 is an enlarged schematic view of a fixing device according to a second embodiment of the present invention;
FIG. 6 is an enlarged schematic view of a second embodiment of the anchor clamps of the present invention;
FIG. 7 is an enlarged schematic view of a fixing device according to a second embodiment of the present invention;
in the figure: 20-upper fixing device, 21-fixing main body, 22-convex beam, 23-upper fixing hole, 24-clamping groove, 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-test piece (71-anchor, 72-channel, 73-T bolt) to be tested;
FIG. 8 is a schematic diagram showing the composition and structure of a third embodiment of the present invention;
FIG. 9 is an enlarged schematic view of a fixing device according to a third embodiment of the present invention;
FIG. 10 is an enlarged schematic view of a third embodiment of the present invention;
FIG. 11 is an enlarged schematic view of a fixing device according to a third embodiment of the present invention;
in the figure: 30-upper fixing device, 31-fixing main body, 32-convex beam, 33-upper fixing hole, 34-clamping groove, 35-fixing base, 36-lower fixing hole, 37-screw hole, 38-lower fixing device, 40-pre-buried channel clamp, 41-upper clamp, 42-upper clamping groove, 43-clamp bolt, 44-lower clamping groove, 45-lower clamp and 80-test piece (83-T type bolt, 82-channel, two anchor rods) to be tested.
Detailed Description
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 to 3 show various structural schematic diagrams of a first embodiment of the present invention. As shown in fig. 1-3, the present invention provides a stretch detection assembly for pre-buried channels. The test device comprises an upper fixing device 10 arranged at the upper end of a testing machine and a lower fixing device 18 arranged at the lower end of the testing machine, a test piece 60 to be tested is arranged between the upper fixing device 10 and the lower fixing device 18, the upper fixing device 10 comprises a fixing main body 11, an upper fixing hole 13 used for being fixed with the upper end of the testing machine, a clamping groove 14 used for accommodating a T-shaped bolt and a convex beam 12 used for fixing the fixing main body 11, the fixing main body 11 is provided with the upper fixing hole 13, the clamping groove 14 and the convex beam 12, the clamping groove 14 is arranged below the convex beam 12, and the upper fixing hole 13 is arranged above the middle of the convex beam 12; the lower fixing device 18 comprises a screw hole 17 matched with the T-shaped bolt, a fixing base 15 and a lower fixing hole 16 used for being fixed with the lower end of the testing machine, and the screw hole 17 and the lower fixing hole 16 are arranged on the fixing base 15. The device has the advantages of exquisite design, simple installation and operation, convenience for independent operation by a single person and higher test efficiency; the test principle is simple, the influence of other influencing factors is less, the test data is reliable, and the stability is higher. The experimental materials used in the first embodiment of the present invention all used 16Mn steel.
First embodiment: the tensile strength of the T-shaped bolt 63 is detected, and the test installation operation steps are as follows:
(1) The testing machine is a universal testing machine, the upper end fixing device 10 of the testing machine is directly fixed on the upper part of the universal testing machine through bolts and upper fixing holes 13, and then the T-shaped bolt to be tested is arranged in the clamping groove 14 for accommodating the T-shaped bolt;
(2) Inserting the T-shaped bolt into the T-shaped bolt clamping groove 14 and enabling the T-shaped bolt to be positioned on the axis of the universal test machine;
(3) Screwing the screw rod of the T-shaped bolt into the screw hole 17 of the lower fixing device 18 at the lower end of the testing machine;
(4) Loading 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) Starting the testing machine, and testing according to the standard requirement of TB/T3329-2013 embedded channel in the tunnel of the contact network of the electrified railway.
Fig. 4 to 7 show various structural schematic diagrams of a second embodiment of the present invention. As shown in fig. 4-7, the present invention provides a stretch detection assembly for pre-buried channels. The test device comprises an upper fixing device 20 arranged at the upper end of a test machine and a lower fixing device 28 arranged at the lower end of the test machine, wherein a test piece 70 to be tested is arranged between the upper fixing device 20 and the lower fixing device 28, the upper fixing device 20 comprises a fixing main body 21, an upper fixing hole 23 used for being fixed with the upper end of the test machine, a clamping groove 24 used for accommodating a T-shaped bolt and a convex beam 22 used for fixing the main body 21, the fixing main body 21 is provided with the upper fixing hole 23, the clamping groove 24 and the convex beam 22, the clamping groove 24 is arranged below the convex beam 22, and the upper fixing hole 23 is arranged above the middle of the convex beam 22; the lower fixing device 28 comprises a screw hole 27 matched with the T-shaped bolt, a fixing base 25 and a lower fixing hole 26 used for being fixed with the lower end of the testing machine, and the screw hole 27 and the lower fixing hole 26 are arranged on the fixing base 25. The stretching detection combined device for the embedded channel can further comprise an anchor rod clamp 50, wherein the anchor rod clamp 50 comprises an anchor rod clamp head 53, an anchor rod groove 54, a fixing bolt hole 55, a left anchor rod clamp 51 and a right anchor rod clamp 52, the anchor rod groove 54 comprises a left anchor rod groove 54 and a right anchor rod groove 54, the left anchor rod clamp head 54 and the anchor rod clamp head 53 are arranged on the left anchor rod clamp 51, the right anchor rod clamp head 52 is provided with a right anchor rod groove 54 and a fixing bolt hole 55, the right anchor rod clamp head 52 passes through the fixing bolt hole 55 through a bolt to be connected with the left anchor rod clamp head 51, the anchor rod clamp 50 is arranged between the upper fixing device 20 and a test piece 70 to be detected, and the test piece 70 to be detected is connected with the lower fixing device 28 through threads. The device has the advantages of exquisite design, simple installation and operation, convenience for independent operation by a single person and higher test efficiency; the test principle is simple, the influence of other influencing factors is less, the test data is reliable, and the stability is higher. The experimental materials used in the second embodiment of the present invention all used 16Mn steel.
Second embodiment: the T-shaped bolt 73, the channel 72 and the single anchor rod 71 axis bearing load test, and the test installation operation steps are as follows:
(1) The testing machine is a universal testing machine, and the upper fixing device 20 of the testing machine is directly fixed on the upper part of the universal testing machine through bolts and upper fixing holes 23;
(2) Loosening the fixing bolt of the anchor rod clamp 50, disassembling the anchor rod clamp 50, loading the anchor rod into an embedded channel anchor rod, combining the left anchor rod clamp 51 and the right anchor rod clamp 52, and tightening the fixing bolt;
(3) Inserting an anchor rod clamp chuck 53 into a clamping groove 24 of a fixing device 20 on the upper end of the testing machine, which is used for accommodating a T-shaped bolt, arranging an anchor rod on an anchor rod clamp 50, arranging an embedded channel on an anchor rod 56, and arranging an embedded channel clamping groove 24 on the embedded channel;
(4) The T-shaped bolt is slid into the embedded channel clamping groove 24 and positioned on the axis of the universal test machine;
(5) Screwing the screw rod of the T-shaped bolt into a screw hole 27 of a lower fixing device 28 at the lower end of the testing machine;
(6) Loading 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) Starting the testing machine, and testing according to the standard requirement of TB/T3329-2013 embedded channel in the tunnel of the contact network of the electrified railway.
Fig. 8 to 11 show various structural schematic diagrams of a third embodiment of the present invention. As shown in fig. 8-11, the present invention provides a stretch detection assembly for pre-buried channels. The test device comprises an upper fixing device 30 arranged at the upper end of a testing machine and a lower fixing device 38 arranged at the lower end of the testing machine, wherein a test piece 80 to be tested is arranged between the upper fixing device 30 and the lower fixing device 38, the upper fixing device 30 comprises a fixing main body 31, an upper fixing hole 33 used for being fixed with the upper end of the testing machine, a clamping groove 34 used for accommodating a T-shaped bolt and a convex beam 32 used for fixing the fixing main body 31, the fixing main body 31 is provided with the upper fixing hole 33, the clamping groove 34 and the convex beam 32, the clamping groove 34 is arranged below the convex beam 32, and the upper fixing hole 33 is arranged above the middle of the convex beam 32; the lower fixing device 38 comprises a screw hole 37 matched with the T-shaped bolt, a fixing base 35 and a lower fixing hole 36 used for being fixed with the lower end of the testing machine, and the screw hole 37 and the lower fixing hole 36 are arranged on the fixing base 35. The stretching detection combined device for the embedded channel can comprise an embedded channel clamp 40, wherein the embedded channel clamp 40 comprises an upper clamp 41, a lower clamp 45, a clamp bolt 43, an upper clamping groove 42 and a lower clamping groove 44, the upper clamp 41 is provided with the upper clamping groove 42, the lower clamp 45 is provided with the lower clamping groove 44, the upper clamp 41 is connected with the lower clamp 45 through the clamp bolt 43, the embedded channel clamp 40 is internally provided with an upper fixing device 30 and a test piece 80 to be detected, and the test piece 80 to be detected is connected with the lower fixing device 38 through threads. The device has the advantages of exquisite design, simple installation and operation, convenience for independent operation by a single person and higher test efficiency; the test principle is simple, the influence of other influencing factors is less, the test data is reliable, and the stability is higher. The experimental materials used in the third embodiment of the present invention all used 16Mn steel.
Third embodiment: the T-shaped bolt 83-channel 82 midspan (T-shaped bolt 83-channel 82-two anchors (not shown)) is used for carrying load test, and the test and installation operation steps are as follows:
(1) The tester is a universal tester, and the upper end fixing device 30 of the tester is directly fixed on the upper part of the universal tester through bolts and upper fixing holes 33;
(2) Embedding the convex beam 12 of the upper fixing device 30 into the upper clamping groove 42 of the embedded channel clamp 40, wherein the embedded channel clamp 40 is respectively arranged at two ends of the upper fixing hole 33 of the upper fixing device 30 and symmetrically distributed; the pre-buried channel is provided between the upper and lower clamping grooves 42 and 44,
(3) The lower end of the pre-buried clamp is provided with a pre-buried channel which is arranged between the upper clamping groove 42 and the lower clamping groove 44 and is used for screwing the clamp bolt 43;
(4) The T-shaped bolt is slid into the embedded channel clamping groove 34 and positioned on the axis of the universal test machine;
(5) Screwing the screw rod of the T-shaped bolt into a screw hole 37 of a lower fixing device 38 at the lower end of the testing machine;
(6) Loading the lower fixing hole 36 of the lower fixing device 38 at the lower end of the tester into the lower part of the universal tester;
(7) Starting the testing machine, and testing according to the standard requirement of TB/T3329-2013 embedded channel in the tunnel of the contact network of the electrified railway.
While the present invention has been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various modifications may be made thereto within the knowledge of those skilled in the art.
Claims (6)
1. The utility model provides a tensile test composite set for pre-buried channel, it includes setting up the upper fixing device (10; 20; 30) at the testing machine upper end and setting up the lower fixing device (18; 28; 38) at the testing machine lower extreme, establishes test piece (60) of awaiting measuring between upper fixing device (10; 20; 30) and lower fixing device (18; 28; 38), its characterized in that: the upper fixing device (10; 20; 30) comprises a fixing main body (11; 21; 31), an upper fixing hole (13; 23; 33) for fixing with the upper end of the testing machine, a clamping groove (14; 24; 34) for accommodating a T-shaped bolt and a convex beam (12; 22; 32) for fixing the fixing main body (11; 21; 31), wherein the fixing main body (11; 21; 31) is provided with the upper fixing hole (13; 23; 33), the clamping groove (14; 24; 34) and the convex beam (12; 22; 32), the clamping groove (14; 24; 34) is arranged below the convex beam (12; 22; 32), and the middle of the convex beam (12; 22; 32) is provided with the fixing hole; the lower fixing device (18; 28; 38) comprises screw holes (17; 27; 37) matched with the T-shaped bolts, a fixing base (15; 25; 35) and lower fixing holes (16; 26; 36) used for fixing the lower end of the testing machine, and the screw holes (17; 27; 37) and the lower fixing holes (16; 26; 36) are arranged on the fixing base (15; 25; 35); the stretching detection combined device for the embedded channel comprises an embedded channel clamp (40), wherein the embedded channel clamp (40) comprises an upper clamp (41), a lower clamp (45), a clamp bolt (43), an upper clamping groove (42) and a lower clamping groove (44), the upper clamp (41) is provided with the upper clamping groove (42), the lower clamp (45) is provided with the lower clamping groove (44), the upper clamp (41) is connected with the lower clamp (45) through the clamp bolt (43), an upper fixing device (10; 20; 30) and a test piece (60) to be detected are arranged in the embedded channel clamp (40), and the test piece (60) to be detected is connected with the lower fixing device (18; 28; 38) through threads; the stretching detection combined device for the embedded channel comprises an anchor rod clamp (50), wherein the anchor rod clamp (50) comprises an anchor rod clamp head (53), an anchor rod groove (54), a fixing bolt hole (55), a left anchor rod clamp (51) and a right anchor rod clamp (52), the anchor rod groove (54) comprises a left anchor rod groove (54) and a right anchor rod groove (54), the left anchor rod clamp (51) is provided with the left anchor rod groove (54) and the anchor rod clamp head (53), the right anchor rod clamp (52) is provided with the right anchor rod groove (54) and the fixing bolt hole (55), the right anchor rod clamp (52) is connected with the left anchor rod clamp (51) through bolts penetrating through the fixing bolt hole (55), the anchor rod clamp (50) is arranged between an upper fixing device (10; 20; 30) and a test piece (60) to be detected, and the test piece (60) to be detected is connected with a lower fixing device (18; 28; 38) through threads; the anchor rod clamp head (53) is inserted into a clamping groove (14; 24; 34) of a fixing device (10; 20; 30) at the upper end of the testing machine, which is used for accommodating the T-shaped bolt, an anchor rod is arranged on the anchor rod clamp (50), an embedded channel is arranged on the anchor rod, and an embedded channel clamping groove (14; 24; 34) is arranged on the embedded channel.
2. The stretch testing combination for pre-buried channels of claim 1, wherein: a T-bolt is inserted into the T-bolt slot (14; 24; 34) and positioned on the axis of the universal test machine.
3. The stretch testing combination for pre-buried channels of claim 1, wherein: embedding the convex beams (12, 22, 32) of the upper fixing device (10, 20, 30) into the upper clamping grooves (42) of the embedded channel clamps (40), wherein the embedded channel clamps (40) are respectively arranged at two ends of the upper fixing holes (13, 23, 33) of the upper fixing device (10, 20, 30) and are symmetrically distributed; the pre-buried channel is arranged between the upper clamping groove (42) and the lower clamping groove (44).
4. A stretch testing combination for pre-buried channels according to any one of claims 1 to 3, characterized in that: the test piece (60; 70; 80) to be tested is a T-shaped bolt (63; 73; 83), a T-shaped bolt (63; 73; 83) -a channel (72; 82) -a single anchor rod (71) or a T-shaped bolt (63; 73; 83) -a channel (72; 82) -two anchor rods (71).
5. A stretch testing combination for pre-buried channels according to any one of claims 1 to 3, characterized in that: the testing machine is a universal testing machine, and the upper fixing device (10; 20; 30) of the testing machine is directly fixed on the upper part of the universal testing machine through bolts and upper fixing holes (13; 23; 33).
6. A stretch testing combination for pre-buried channels according to any one of claims 1 to 3, characterized in that: the lower fixing hole (16; 26; 36) of the lower fixing device (18; 28; 38) at the lower end of the testing machine is arranged in the lower part of the universal testing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910180881.2A CN109946151B (en) | 2019-03-11 | 2019-03-11 | Stretching detection combined device for embedded channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180881.2A CN109946151B (en) | 2019-03-11 | 2019-03-11 | Stretching detection combined device for embedded channel |
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| CN109946151A CN109946151A (en) | 2019-06-28 |
| CN109946151B true CN109946151B (en) | 2023-10-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567800A (en) * | 2019-08-16 | 2019-12-13 | 广东工业大学 | Stretching clamp |
| CN112284887B (en) * | 2020-12-01 | 2024-08-06 | 华侨大学 | Protective cover for anchor rod tendon tensile test experiment and mounting method thereof |
| CN113607548A (en) * | 2021-01-14 | 2021-11-05 | 江苏省建筑工程质量检测中心有限公司 | Channel body tensile strength mechanical test tool and application thereof |
| CN116952719A (en) * | 2023-07-12 | 2023-10-27 | 中铁十七局集团第二工程有限公司 | Pre-buried channel tensile test device and system |
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