Tool for detecting performance of pre-buried channel in concrete test block

Abstract

The utility model discloses a tool for detecting the performance of an embedded channel in a concrete test block, which is arranged on a test bed of a testing machine, and comprises an alignment plate, a plurality of roller assemblies, a plurality of clamping blocks, a plurality of clamping blocks and a plurality of clamping blocks, and the clamping tool is mounted on the top end surface of the test bed and is used for fixing the concrete test block. During testing, a concrete test block is placed on the alignment plate, then the alignment plate is moved through the roller assembly, so that a bolt in a channel at the top end of the concrete test block is aligned with the position of a loading device on a testing machine, and then the concrete test block is fixed on a test bed through the clamping tool. According to the tool, the movable alignment plate is used, so that the concrete test block on the alignment plate can be driven to move in position, the position alignment of a bolt of a channel on the concrete test block and a loading device is easy to realize, the heavy concrete test block does not need to be manually moved, the physical labor of a tester is reduced, and the test efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of embedded groove detection, and more specifically to a tool for detecting the performance of embedded grooves in concrete test blocks. Background Art

[0002] The channel is a steel structure component used in railways, tunnels, bridges, locomotives, nuclear power plants, and housing buildings. During use, the entire channel is buried in concrete, leaving a C-shaped cavity for the hanging bolts to fix the hanging products. The purpose of fatigue and mechanical property testing of the embedded channel is to provide a basis for manufacturing, use, and testing for the manufacturers, users, and testing agencies of the embedded channel, evaluate the fatigue and mechanical life of the embedded channel, and avoid quality accidents such as cracking and pulling out of anchor bolts after long-term use.

[0003] Existing technologies such as CN207923604U - a measuring device for detecting the fatigue performance of embedded grooves in concrete components, discloses that through the cooperation of a clamping device composed of a pull rod, a nut, a pressure plate and a pad and a connecting groove on the upper surface of the test bench, the concrete component can be effectively fixed on the test bench to ensure that the embedded groove is in a stable state when subjected to fatigue dynamic stress.

[0004] However, after placing the concrete specimen on the test bench, in order to ensure that the test force line (the loading force line of the loading device) and the force point of the tested specimen (the axis of the bolt) are in a straight line, thereby ensuring the test accuracy, it is necessary to align the bolts in the grooves on the specimen with the position of the loading device on the testing machine. The conventional operation is to manually move the bulky concrete specimen multiple times, which is time-consuming and labor-intensive.

[0005] Therefore, how to provide a tool for testing the performance of embedded grooves in concrete test blocks that can easily align the positions of bolts on concrete test pieces and loading devices is an urgent problem that needs to be solved by technical personnel in this field. Utility Model Content

[0006] In view of this, the utility model provides a tool for detecting the performance of a pre-buried groove in a concrete test block, which is easy to align the positions of a bolt on a concrete test piece and a loading device.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A tool for testing the performance of a pre-buried channel in a concrete test block, the tool is installed on a test bench of a testing machine, and the tool comprises:

[0009] An alignment plate, a concrete test block is placed on the top of the alignment plate, and a plurality of roller assemblies are installed on the alignment plate to be in rolling contact with the top surface of the test bench;

[0010] A clamping fixture is installed on the top surface of the test bench and is used to fix the concrete test block.

[0011] It can be known from the above technical solution that, compared with the prior art, the utility model discloses a tooling for testing the performance of the embedded groove in the concrete test block. During the test, the concrete test block is placed on the alignment plate, and then the alignment plate is moved by the roller assembly to align the bolts in the groove at the top of the concrete test block with the position of the loading device on the testing machine. After that, the concrete test block is fixed on the test bench by the clamping tooling, and then the subsequent testing process is carried out. Therefore, the tooling uses a movable alignment plate, which can drive the concrete test block thereon to move in position, and it is easy to align the bolts in the groove on the concrete test block with the position of the loading device, without the need to manually move the bulky concrete test block, reducing the physical labor of the test personnel and improving the test efficiency.

[0012] Furthermore, notches are provided on the front and rear sides of the alignment plate, a transverse rod is fixed to each of the notches, the top of the roller assembly is pivotally connected to the transverse rod, and the bottoms of multiple roller assemblies are respectively fixed to the alignment plate by pins; multiple lifting support members that can abut against the top surface of the test bench are installed on the left and right sides of the alignment plate.

[0013] The beneficial effect of adopting the above technical scheme is: when the alignment plate is moved and aligned by using the roller assembly, the lifting support member does not contact with the top of the test bench, which facilitates the movement of the alignment plate. When the bolts in the groove at the top of the concrete test block are aligned with the position of the loading device on the testing machine, the lifting support member is operated to make the bottom end of the lifting support member contact with the top of the test bench, and the lifting support member is used to lift the alignment plate together with the concrete test block thereon until the roller assembly is no longer in contact with the top of the test bench. Then, the pin is pulled out. At this time, the bottom of the roller assembly can move, and the top can swing around the transverse rod. After that, the lifting support member is operated to lower the alignment plate until the bottom end surface of the alignment plate is completely in contact with the top surface of the test bench. At this time, the bottom of the roller assembly can swing to the outside of the notch, and the roller assembly no longer plays a supporting role. In this way, the alignment plate is in full contact with the test bench, avoiding point contact between the alignment plate and the test bench through the roller assembly. When the loading device applies compressive stress load to the bolts on the concrete test block, the alignment plate is damaged by buckling and deformation, affecting the bolt test effect.

[0014] Therefore, the test force line is always in a straight line with the force point of the tested sample. However, in some tests, such as the bending test of the embedded groove, as the force applied by the testing machine increases, the force line and the force point are not in a straight line, which will cause damage to the testing machine or the sample fails to meet the requirements of the test method.

[0015] Furthermore, the two ends of the transverse rod are respectively fixed on the two opposite side walls at the top of the notch, and the two opposite side walls at the bottom of the notch are respectively provided with a through hole and a latch fixing hole, and the roller assembly includes:

[0016] A leg, wherein a pivot hole and a latch hole are respectively provided at the top and the bottom of the leg, the transverse rod is arranged through the pivot hole, and one end of the latch passes through the through hole and the latch hole in sequence and then is plugged into the latch fixing hole;

[0017] A roller is pressed into a groove at the bottom end of the leg.

[0018] The beneficial effects of adopting the above technical solution are: by passing the pin through the through hole, the pin hole, and the pin fixing hole in sequence, the support leg no longer swings around the transverse rod, and the roller can roll on the test bench; by pulling the pin out of the through hole, the pin hole, and the pin fixing hole, the support leg can swing around the transverse rod, and the roller no longer has rolling contact with the test bench, which facilitates the surface contact between the alignment plate and the test bench.

[0019] Furthermore, the latch pin is a square rod, and the through hole, the latch pin hole, and the latch pin fixing hole are all square holes that match the shape of the square rod.

[0020] The beneficial effect of adopting the above technical solution is: because the pin and the through hole, the pin hole and the pin fixing hole are all square structures, when the square rod is inserted into the through hole, the pin hole and the pin fixing hole, it can be ensured that the bottom of the leg will not swing, thereby ensuring that the roller at the bottom end of the leg can always be in rolling contact with the top surface of the test bench, thereby ensuring the stability of the movement of the alignment plate.

[0021] Furthermore, the roller assembly also includes a plurality of drag-reducing balls pressed onto the groove wall of the groove, and the plurality of drag-reducing balls are in rolling contact with the roller.

[0022] The beneficial effect of adopting the above technical solution is that the setting of the drag-reducing ball can improve the rolling effect of the roller and avoid jamming caused by large friction between the roller and the groove.

[0023] Furthermore, each of the lifting supports comprises:

[0024] A mounting plate, one side of which is fixed to a side wall of the alignment plate;

[0025] A lifting screw rod, the lifting screw rod is arranged through the mounting plate, an upper nut and a lower nut are screwed on the lifting screw rod, and the upper nut and the lower nut are respectively located above and below the mounting plate;

[0026] A support seat, the top end of the support seat is fixedly connected to the lower end of the lifting screw, and the bottom end of the support seat can abut against the top surface of the test bench.

[0027] The beneficial effect of adopting the above technical solution is: when the alignment plate is moved and aligned by using the roller assembly, the support seat does not contact with the top of the test bench, which facilitates the movement of the alignment plate. When the bolts in the groove at the top of the concrete test block are aligned with the position of the loading device on the testing machine, the upper nut and the lower nut are loosened to make the lifting screw rod bring the support seat down, so that the support seat is supported on the top surface of the test bench, and then the lower nut is rotated to move it upward, thereby lifting the mounting plate, thereby realizing the upward movement of the alignment plate, until the roller is no longer in contact with the top of the test bench, and then the pin is pulled out. At this time The bottom of the leg is movable, and the top can swing around the transverse rod. After that, the lower nut is rotated to move it downward, so that the alignment plate falls back until the bottom end surface of the alignment plate is completely in contact with the top surface of the test bench. At this time, the bottom of the leg swings to the outside of the notch, and the roller does not play a supporting role. The alignment plate is fully supported on the test bench, so that there is surface contact between the alignment plate and the test bench, avoiding point contact between the alignment plate and the test bench through the roller. When the loading device applies compressive stress load to the bolts on the concrete test block, the alignment plate is damaged by buckling deformation and affects the bolt test effect.

[0028] Furthermore, a level is installed on the outer peripheral side wall of the alignment plate.

[0029] The beneficial effect of adopting the above technical solution is that when lifting and lowering the alignment plate, a level meter can be used to observe whether the alignment plate is in a horizontal position, thereby avoiding a large tilt of the alignment plate that affects the alignment of the bolts on the concrete test block and the loading device.

[0030] Furthermore, the clamping tool comprises:

[0031] A clamping screw, wherein the clamping screw is arranged at intervals on both sides of the concrete test block, a slider at the lower end of each clamping screw is placed in a slide groove on the top surface of the test bench, and a locking nut is threaded on the upper end of each clamping screw;

[0032] The pressure plates are two arranged at intervals, and the two sides of each pressure plate are respectively penetrated on the corresponding clamping screw, the bottom end surface of the pressure plate is crimped with the top end surface of the concrete test block, and the locking nut is press-fitted on the top end surface of the pressure plate.

[0033] The beneficial effect of adopting the above technical solution is that the concrete test block can be pressed onto the alignment plate by the pressing plate, which is convenient for subsequent test operations.

[0034] Furthermore, a support screw is screwed to the bottom end of the test bench, a clamping rod is fixed to the lower end of the support screw, and the lower end of the clamping rod is fixed to the lower jaw of the testing machine.

[0035] The beneficial effect of adopting the above technical solution is that the diameter of the support screw can be a fixed specification, and the clamping rod can be provided with a plurality of clamping rods of different diameters and sizes, so that the clamping rods of different specifications can be replaced according to the lower jaws of different sizes without replacing the test bench, so that the test bench can be adapted to testing machines of different specifications without replacement.

[0036] Furthermore, an auxiliary support plate is fixed on the support screw, and the top end of the auxiliary support plate abuts against the bottom end of the test bench.

[0037] The beneficial effect of adopting the above technical solution is to improve the supporting stability of the test bench by the supporting screw. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0039] Figure 1 The utility model provides a main structural schematic diagram of a tooling for testing the performance of a pre-buried channel in a concrete test block.

[0040] Figure 2 The utility model provides a side structural schematic diagram of a tooling for testing the performance of a pre-buried channel in a concrete test block.

[0041] Figure 3 for Figure 1 Schematic diagram of the enlarged structure of local A in the middle. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0043] The tooling of the utility model is used to align the bolt 300 in the top groove of the concrete test block 200 with the position of the loading device 1003 on the testing machine 100, so that the loading force of the loading device 1003 can be accurately loaded on the bolt 300, thereby ensuring the test accuracy and test effect.

[0044] The specific embodiment of the tool is as follows:

[0045] like Figure 1-Figure 3 As shown, the embodiment of the utility model discloses a tool for testing the performance of a pre-buried groove in a concrete test block, the tool is installed on a test bench 1001 of a testing machine 100, and the tool includes:

[0046] An alignment plate 1, a concrete test block 200 is placed on the top of the alignment plate 1, and a plurality of roller assemblies 2 are installed on the alignment plate 1 to roll with the top surface of the test bench 1001;

[0047] The clamping fixture 3 is installed on the top surface of the test bench 1001 and is used to fix the concrete test block 200.

[0048] In some embodiments, notches 101 are provided on the front and rear sides of the alignment plate 1, a transverse rod 4 is fixed to each notch 101, the top of the roller assembly 2 is pivotally connected to the transverse rod 4, and the bottoms of multiple roller assemblies 2 are respectively fixed to the alignment plate 1 by pins 5; multiple lifting support members 6 that can abut against the top surface of the test bench 1001 are installed on the left and right sides of the alignment plate 1.

[0049] In some embodiments, the two ends of the transverse rod 4 are respectively fixed on the two opposite side walls at the top of the notch 101, and the two opposite side walls at the bottom of the notch 101 are respectively provided with a through hole 102 and a latch fixing hole 103. The roller assembly 2 includes:

[0050] The leg 21 has a pivot hole 211 and a latch hole 212 at the top and bottom, respectively. The transverse rod 4 is arranged through the pivot hole 211. One end of the latch 5 passes through the through hole 102 and the latch hole 212 in sequence and then plugs into the latch fixing hole 103.

[0051] The roller 22 is press-fitted into the groove 213 at the bottom end of the leg 21 .

[0052] In some embodiments, the latch pin 5 is a square rod, and the through hole 102, the latch pin hole 212, and the latch pin fixing hole 103 are all square holes that match the shape of the square rod.

[0053] In some embodiments, the roller assembly 2 further includes a plurality of drag-reducing balls 23 pressed onto the groove wall of the groove 213 , and the plurality of drag-reducing balls 23 are all in rolling contact with the roller 22 .

[0054] In some embodiments, each lifting support 6 comprises:

[0055] A mounting plate 61, one side of the mounting plate 61 is fixed to the side wall of the alignment plate 1;

[0056] A lifting screw rod 62, the lifting screw rod 62 is arranged through the mounting plate 61, an upper nut 63 and a lower nut 64 are screwed on the lifting screw rod 62, and the upper nut 63 and the lower nut 64 are respectively located above and below the mounting plate 61;

[0057] The support seat 65 has a top end fixedly connected to the lower end of the lifting screw 62 , and a bottom end of the support seat 65 can abut against the top surface of the test bench 1001 .

[0058] Of course, in addition to adopting the structural mode of lifting the support member 6, the alignment plate can also be directly lifted and installed by a crane.

[0059] In some embodiments, a level 7 is installed on the outer peripheral side wall of the alignment plate 1 .

[0060] In some embodiments, the clamping tool 3 includes:

[0061] Clamping screws 31, which are arranged at intervals on both sides of the concrete test block 200, and the slider 311 at the lower end of each clamping screw 31 is placed in the slide groove 10011 on the top surface of the test bench 1001, and the upper end of each clamping screw 31 is threaded with a locking nut 32;

[0062] The pressing plates 33 are two arranged at intervals, and the two sides of each pressing plate 33 are respectively penetrated on the corresponding clamping screw 31, the bottom end surface of the pressing plate 33 is crimped with the top end surface of the concrete test block 200, and the locking nut 32 is press-fitted on the top end surface of the pressing plate 33.

[0063] In some embodiments, a support screw 8 is screwed to the bottom end of the test bench 1001 , a clamping rod 9 is fixed to the lower end of the support screw 8 , and the lower end of the clamping rod 9 is fixed to the lower jaw 1002 of the testing machine 100 .

[0064] In some embodiments, an auxiliary support plate 10 is fixed on the support screw 8 , and the top end of the auxiliary support plate 10 abuts against the bottom end of the test bench 1001 .

[0065] The process of using the tool is:

[0066] During the test, the concrete test block is placed on the alignment plate, and the alignment plate is moved so that the bolts in the top groove of the concrete test block are aligned with the position of the loading device on the testing machine. Then the upper nut and the lower nut are loosened, so that the lifting screw rod brings the support seat down, so that the support seat is supported on the top surface of the test bench, and then the lower nut is rotated to move it upward, thereby lifting the mounting plate, thereby realizing the upward movement of the alignment plate until the roller is no longer in contact with the top of the test bench, and then the pin is pulled out. At this time, the bottom of the leg can move, and the top can swing around the transverse rod. After that, the lower nut is rotated to move it downward, thereby causing the alignment plate to fall back until the bottom end surface of the alignment plate is completely in contact with the top surface of the test bench. At this time, the bottom of the leg swings to the outside of the notch, and the roller does not play a supporting role. The alignment plate is fully supported on the test bench, so that the alignment plate and the test bench are in surface contact, avoiding point contact between the alignment plate and the test bench through the roller. When the loading device applies compressive stress load to the bolts on the concrete test block, the alignment plate is buckled and deformed and damaged, affecting the bolt test effect. Afterwards, the concrete test block is fixed by a pressure plate, and then subsequent experimental operations can be carried out.

[0067] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tool for testing the performance of embedded channels in concrete test blocks, characterized in that: The tool is installed on a test bench (1001) of a testing machine (100), and comprises: An alignment plate (1), a concrete test block (200) being placed on the top of the alignment plate (1), and a plurality of roller assemblies (2) being mounted on the alignment plate (1) and being in rolling contact with the top surface of the test bench (1001); A clamping tool (3), the clamping tool (3) is installed on the top surface of the test bench (1001) and is used to fix the concrete test block (200).

2. The tooling for testing the performance of the embedded channel in the concrete test block according to claim 1 is characterized in that: The alignment plate (1) is provided with notches (101) on both the front and rear sides, and a transverse rod (4) is fixed to each of the notches (101). The top of the roller assembly (2) is pivotally connected to the transverse rod (4), and the bottoms of the plurality of roller assemblies (2) are respectively fixed to the alignment plate (1) by means of latches (5); and a plurality of lifting support members (6) that can abut against the top surface of the test bench (1001) are installed on both the left and right sides of the alignment plate (1).

3. The tooling for testing the performance of the embedded channel in the concrete test block according to claim 2 is characterized in that: The two ends of the transverse rod (4) are respectively fixed on the two opposite side walls at the top of the notch (101); the two opposite side walls at the bottom of the notch (101) are respectively provided with a through hole (102) and a latch fixing hole (103); the roller assembly (2) comprises: A support leg (21), wherein a pivot hole (211) and a latch hole (212) are respectively provided at the top and the bottom of the support leg (21), the transverse rod (4) is arranged through the pivot hole (211), and one end of the latch (5) passes through the through hole (102) and the latch hole (212) in sequence and then is plugged into the latch fixing hole (103); A roller (22), wherein the roller (22) is pressed into a groove (213) at the bottom end of the leg (21).

4. The tooling for testing the performance of the embedded channel in the concrete test block according to claim 3 is characterized in that: The latch pin (5) is a square rod, and the through hole (102), the latch pin hole (212), and the latch pin fixing hole (103) are all square holes that match the shape of the square rod.

5. The tooling for testing the performance of the embedded channel in the concrete test block according to claim 3 is characterized in that: The roller assembly (2) further comprises a plurality of drag-reducing rolling balls (23) pressed onto the groove wall of the groove (213), and the plurality of drag-reducing rolling balls (23) are all in rolling contact with the roller (22).

6. A tool for testing the performance of a pre-embedded channel in a concrete test block according to any one of claims 2 to 5, characterized in that: Each of the lifting supports (6) comprises: A mounting plate (61), one side of the mounting plate (61) being fixed to a side wall of the alignment plate (1); A lifting screw rod (62), the lifting screw rod (62) being arranged through the mounting plate (61), an upper nut (63) and a lower nut (64) being screwed onto the lifting screw rod (62), the upper nut (63) and the lower nut (64) being located above and below the mounting plate (61), respectively; A support seat (65), the top end of the support seat (65) is fixedly connected to the lower end of the lifting screw rod (62), and the bottom end of the support seat (65) can abut against the top surface of the test bench (1001).

7. A tool for testing the performance of a pre-buried channel in a concrete test block according to any one of claims 2 to 5, characterized in that: Level meters (7) are installed on the outer peripheral side walls of the alignment plate (1).

8. A tool for testing the performance of a pre-embedded channel in a concrete test block according to any one of claims 1 to 5, characterized in that: The clamping tool (3) comprises: A clamping screw (31), wherein the clamping screw (31) is arranged in a plurality at intervals on both sides of the concrete test block (200), a slider (311) at the lower end of each clamping screw (31) is placed in a slide groove (10011) on the top surface of the test bench (1001), and a locking nut (32) is threadedly connected to the upper end of each clamping screw (31); A pressure plate (33), wherein two pressure plates (33) are arranged at intervals, and both sides of each pressure plate (33) are respectively inserted into the corresponding clamping screw (31), the bottom end surface of the pressure plate (33) is pressed against the top end surface of the concrete test block (200), and the locking nut (32) is pressed onto the top end surface of the pressure plate (33).

9. A tool for testing the performance of a pre-buried channel in a concrete test block according to any one of claims 1 to 5, characterized in that: A support screw (8) is screwed to the bottom end of the test bench (1001), a clamping rod (9) is fixed to the lower end of the support screw (8), and the lower end of the clamping rod (9) is fixed to the lower jaw (1002) of the testing machine (100).

10. The tooling for testing the performance of the embedded channel in the concrete test block according to claim 9, characterized in that: An auxiliary support plate (10) is fixed on the support screw (8), and the top end of the auxiliary support plate (10) abuts against the bottom end of the test bench (1001).

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