Needle penetration testing device

Abstract

The utility model discloses a needle penetration testing device which comprises a supporting table, a testing mechanism is installed on the top of the supporting table, a constant-temperature box is fixedly connected to the top of the supporting table, and a supporting mechanism is arranged on the constant-temperature box. According to the needle penetration testing device provided by the utility model, the sample cup is aligned to the groove in the center of the supporting plate, then the sample cup is pressed downwards, and under the action of the bottom fillet of the sample cup and the top fillet of the friction block, the ejector rod can be forced to slide towards the interior of the supporting plate along with extrusion of the sample cup, so that the second spring deforms along with the ejector rod; the sample cup can be clamped by virtue of the elastic force of the second spring, so that the installation of the sample cup is completed, after the detection is completed, the sample cup can be directly drawn out, and a new to-be-detected sample cup is put into the supporting plate, so that the next round of detection can be carried out, the replacement and placement operations of the sample cup are relatively convenient, and the detection efficiency is improved. The replacement efficiency of the sample cup is improved, so that the overall detection efficiency of asphalt concrete is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to needle penetration test technical field especially, a kind of needle penetration testing device. BACKGROUND

[0002] Penetration test is an experimental method for measuring the flowability and consistency of asphalt and related materials, by inserting a specific weight needle vertically into the sample under standard conditions and measuring the depth of insertion, to evaluate the physical properties of the material. The main steps of this test include preparing the sample, setting up the equipment, applying the load and recording the depth, and the final penetration value can be used for material classification, quality control and performance prediction. This index has important significance in asphalt production and application. When conducting penetration test, it is usually recommended to detect multiple samples. This is because samples from different batches or different locations may have differences, and through multi-point detection, the performance and consistency of the material can be more comprehensively evaluated. This approach helps to ensure the reliability and representativeness of the test results, and also identifies potential quality problems.

[0003] As China Utility Model Patent (CN217132889U) discloses a needle penetration testing device for asphalt concrete, which records: "The circulating water is kept constant temperature by the thermostat, thereby improving the water constant temperature effect in the water bath, improving the accuracy of asphalt concrete test, when the water in the water bath needs to be discharged, by opening the valve, the water in the water bath is backflowed to the storage tank through the fourth water pipe for collection, improving the convenience of water discharge or addition operation in the water bath, improving the work efficiency", and also records: "The conventional testing device is not convenient for constant temperature control of the water temperature of the water bath, which reduces the accuracy of the penetration test of asphalt concrete, and the conventional testing device usually needs personnel to add or discharge water in the water bath, which reduces the automation of the device and the work efficiency of the device, therefore, a needle penetration testing device is proposed to improve the water bath constant temperature effect and improve the work efficiency".

[0004] In summary, the prior art uses the first top wire to restrict the container and the support on the water bath, but this method has the following technical problems: when installing the container carrying asphalt concrete and the support on the water bath during actual use, multiple first top wires need to be tightened respectively, and when replacing the container, multiple first top wires also need to be loosened respectively. The disassembly method of rotating multiple top wires respectively multiple times is cumbersome, consumes a lot of time, and thus the penetration test efficiency of asphalt concrete is low. Therefore, the present application proposes a needle penetration testing device to solve the technical problems mentioned in the above patent and provides a new technical solution. UTILITY MODEL CONTENT

[0005] Therefore, it is necessary to provide a penetration test device aiming at the above technical problems, by aligning the sample cup at the groove at the center of the support plate, then pressing the sample cup downward, under the action of the bottom round corner of the sample cup and the top round corner of the friction block, the top rod can slide to the inside of the support plate under the extrusion of the sample cup, then the second spring is deformed, the sample cup can be clamped by the elastic force of the second spring, then the installation of the sample cup is completed, the penetration of the asphalt concrete in the sample cup can be detected, then after the detection is completed, the sample cup can be directly extracted, and a new sample cup to be detected is placed in the support plate, then the next round of detection can be carried out, the replacement and placement operation of the sample cup is more convenient, the replacement efficiency of the sample cup is improved, and then the detection efficiency of the asphalt concrete is improved.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] A penetration test device is applied to penetration test of asphalt concrete.

[0008] The penetration test device specifically comprises:

[0009] A support table is provided with a test mechanism on the top, a constant temperature box is fixedly connected to the top of the support table, a support mechanism is arranged on the constant temperature box, and a blocking mechanism is arranged in the constant temperature box.

[0010] The support mechanism comprises a support plate, L-shaped plates, a sample cup, a pushing assembly, a first limiting assembly and a second limiting assembly, a plurality of L-shaped plates are fixedly connected to the top of the support plate and located at the front and back sides respectively, and the sample cup is tightly arranged on the top of the support plate and located at the center.

[0011] As a preferred embodiment of the penetration test device, the pushing assembly comprises fixed tooth plates, the outer wall of the constant temperature box and the front and back sides are fixedly connected with the fixed tooth plates respectively, one end of the L-shaped plate away from the support plate is fixedly connected with a connecting block, a sliding rod is slidingly connected to the inner wall of the connecting block, a limiting tooth plate is fixedly connected to the side of the sliding rod close to the constant temperature box, the limiting tooth plate is inserted into the fixed tooth plate, a baffle is fixedly connected to the bottom of the limiting tooth plate, and the baffle is tightly arranged on the bottom of the fixed tooth plate.

[0012] As a preferred embodiment of the penetration test device, the first limiting assembly comprises a clamping block, the inner wall of the sliding rod is slidingly connected with the clamping block, the bottom of the clamping block is fixedly connected with a first spring, the bottom end of the first spring is fixedly connected to the inner wall of the sliding rod, the clamping block is inserted into the connecting block, and a pressing rod is slidingly connected to the inner wall of the connecting block.

[0013] As a preferred embodiment of the penetration testing device provided by the utility model, the second limiting component comprises a second spring, the inner wall of the support plate is fixedly connected with a plurality of second springs, one end of the second spring close to the sample cup is fixedly connected with a top rod, the top rod is slidingly connected to the inner wall of the support plate, the end of the top rod away from the second spring is fixedly connected with a friction block, and the friction block is tightly attached to the outer wall of the sample cup.

[0014] As a preferred embodiment of the penetration testing device provided by the utility model, the blocking mechanism comprises a blocking net plate, the bottom of the blocking net plate and close to the four corners are fixedly connected with supporting legs respectively, and the blocking net plate and the supporting legs are slidingly connected to the inner wall of the thermostat.

[0015] As a preferred embodiment of the penetration testing device provided by the utility model, the blocking mechanism further comprises a frame, the top of the blocking net plate is fixedly connected with the frame, and the frame is slidingly connected to the inner wall of the thermostat.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] The penetration testing device provided by the utility model can align the sample cup with the groove at the center of the support plate, press the sample cup downward, make the top rod slide to the inside of the support plate under the action of the bottom round corner of the sample cup and the top round corner of the friction block, make the second spring deform, clamp the sample cup by the elastic force of the second spring, complete the installation of the sample cup, detect the penetration of the asphalt concrete in the sample cup, directly take out the sample cup after the detection, put a new sample cup to be detected into the support plate, and then detect the next round, so that the replacement and placement of the sample cup are convenient, the replacement efficiency of the sample cup is improved, and the detection efficiency of the asphalt concrete is improved.

[0018] The needle penetration testing device provided by the utility model, through the second limiting component, the sample cup containing the asphalt concrete sample is put into the support plate, then the support plate is moved to the top of the thermostat, and the support plate is suspended in the thermostat by the plurality of L-shaped plates, then the sliding rod is pushed to drive the clamping block to move to the position close to the thermostat, after the clamping block moves to the lower side of the pressing rod, the clamping block is clamped into the connecting block under the elastic force of the first spring, so that the sliding rod cannot move relative to the connecting block, at this time, the limiting tooth plate is inserted into the corresponding tooth hole of the fixed tooth plate, and the baffle is tightly attached to the bottom of the fixed tooth plate, so that the position of the support plate is limited, and the installation of the sample cup is completed, then when the L-shaped plate and the connecting block need to be disassembled, the clamping block is retracted into the sliding rod by pressing the pressing rod, and then the sliding rod is pulled to move to the appropriate position away from the thermostat, so that the limitation between the connecting block and the thermostat is contacted, and the connecting block, the L-shaped plate and the support plate are removed, the installation and disassembly mode is relatively simple, the operator can operate conveniently, the operation steps are avoided, the efficiency of the asphalt concrete needle penetration test is improved, and the practicability of the device is improved.

[0019] The needle penetration testing device provided by the utility model can block the small particle substances in the sample from moving into the water during the needle penetration test, so that the small particle substances in the asphalt concrete in the water move into the water outlet pipe of the thermostat are reduced, the residual asphalt concrete particles may accumulate in the drainage pipeline with the passage of time, the water flow is not smooth, the practicability of the device is improved. ACCURACY

[0020] In order to more clearly illustrate the scheme in the utility model, the following will be a brief introduction to the drawings needed to be used in the embodiment description, obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0021] Fig. 1 It is the whole structure schematic diagram of the needle penetration testing device provided by the utility model;

[0022] Fig. 2 It is the internal structure schematic diagram of the thermostat of the needle penetration testing device provided by the utility model;

[0023] Fig. 3 It is the support mechanism and the blocking mechanism of the needle penetration testing device provided by the utility model and the enlarged structure schematic diagram;

[0024] Fig. 4 It is the internal structure schematic diagram of the support plate of the needle penetration testing device provided by the utility model;

[0025] Fig. 5 The internal structure diagram of the support mechanism part of the penetration testing device is provided in the utility model.

[0026] Fig. 6 The internal structure schematic diagram of the sliding rod, the connecting block, the L-shaped plate, the limiting toothed plate and the baffle of the penetration testing device is provided in the utility model.

[0027] The mark in the drawing is explained as follows:

[0028] 1, support table; 2, testing mechanism; 3, constant temperature box; 4, support mechanism; 5, blocking mechanism; 6, support plate; 7, L-shaped plate; 8, sample cup; 9, fixed toothed plate; 10, connecting block; 11, sliding rod; 12, limiting toothed plate; 13, baffle; 14, first spring; 15, clamping block; 16, pressing rod; 17, second spring; 18, jacking rod; 19, friction block; 20, blocking net plate; 21, frame; 22, support leg. DETAILED DESCRIPTION

[0029] In order for the personnel in the technical field to better understand the utility model scheme, the technical scheme in the utility model embodiments will be clearly and completely described below in combination with the drawings in the utility model embodiments. Obviously, the described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the personnel in the field without creative labor should belong to the protection scope of the utility model.

[0030] As described in the background, the device needs to respectively tighten a plurality of first jacks during the actual use process when the container carrying asphalt concrete and the support are installed on the water bath box, and also needs to respectively loosen a plurality of first jacks when the container is replaced. The dismounting mode of respectively rotating a plurality of jacks for multiple times is relatively troublesome, the time consumed is relatively long, and then the penetration testing efficiency of the asphalt concrete is relatively low.

[0031] In order to solve the technical problem, the utility model provides a penetration testing device which is applied to asphalt concrete penetration testing.

[0032] Specifically, please refer to Figs. 1-2 The penetration testing device specifically includes:

[0033] The support table 1 is provided with the testing mechanism 2 on the top, is fixedly connected with the constant temperature box 3 on the top, is provided with the support mechanism 4 on the constant temperature box 3, is provided with the blocking mechanism 5 in the constant temperature box 3, and the constant temperature box 3 is HWT-20B type;

[0034] The support mechanism 4 comprises a support plate 6, L-shaped plates 7, a sample cup 8, a pushing assembly, a first limiting assembly and a second limiting assembly, a plurality of L-shaped plates 7 are fixedly connected to the top of the support plate 6 and located at the front and back sides respectively, and the sample cup 8 is tightly arranged at the top of the support plate 6 and located at the center.

[0035] The test mechanism 2 in the application has the same structural principle as the test structure in the prior art summarized in the background art, and is a device for detecting the penetration of asphalt concrete, so no more description is given.

[0036] The penetration testing device provided by the utility model, by the sample cup 8 is aligned with the groove at the center of the support plate 6, then press down the sample cup 8, under the action of the bottom round corner of the sample cup 8 and the top round corner of the friction block 19, the top rod 18 can slide to the inside of the support plate 6 by the extrusion of the sample cup 8, and then the second spring 17 is deformed, the sample cup 8 is clamped by the elastic force of the second spring 17, and the installation of the sample cup 8 is completed, and then the penetration of the asphalt concrete in the sample cup 8 can be detected, and then after the detection is completed, the sample cup 8 can be directly taken out, and a new sample cup 8 to be detected is placed in the support plate 6, and the next round of detection can be carried out, the replacement and placement operation of the sample cup 8 are more convenient, the replacement efficiency of the sample cup 8 is improved, and the overall detection efficiency of the asphalt concrete is improved.

[0037] In order for those skilled in the art to better understand the utility model scheme, the technical scheme in the utility model embodiment will be clearly and completely described below with reference to the drawings.

[0038] Embodiment 1:

[0039] Please refer to Figs. 2-6 A penetration testing device comprises:

[0040] The pushing assembly comprises fixed tooth plates 9, the outer wall of the constant temperature box 3 and the front and back sides are fixedly connected with the fixed tooth plates 9, the end of the L-shaped plate 7 away from the support plate 6 is fixedly connected with a connecting block 10, the inner wall of the connecting block 10 is slidingly connected with a sliding rod 11, the side of the sliding rod 11 close to the constant temperature box 3 is fixedly connected with a limiting tooth plate 12, the limiting tooth plate 12 is inserted into the fixed tooth plate 9, the bottom of the limiting tooth plate 12 is fixedly connected with a baffle 13, the baffle 13 is tightly arranged at the bottom of the fixed tooth plate 9, the two sets of limiting tooth plates 12 and the fixed tooth plates 9 limit the front and back movement and the action movement of the connecting block 10 and the L-shaped plate 7 relative to the constant temperature box 3, and the two baffles 13 and the L-shaped plate 7 limit the up and down movement of the connecting block 10 and the L-shaped plate 7 relative to the constant temperature box 3 in cooperation with the fixed tooth plates 9.

[0041] The first limiting assembly comprises a clamping block 15, the inner wall of the sliding rod 11 is slidably connected with the clamping block 15, the bottom of the clamping block 15 is fixedly connected with a first spring 14, the bottom end of the first spring 14 is fixedly connected to the inner wall of the sliding rod 11, the clamping block 15 is inserted into the connecting block 10, the inner wall of the connecting block 10 is slidably connected with a pressing rod 16, and the pressing rod 16 can make the clamping block 15 retract into the sliding rod 11; in this process, the first spring 14 is deformed, then the sliding rod 11 is pulled, so that the clamping block 15 moves relative to the bottom end of the pressing rod 16, and after the clamping block 15 moves away from the pressing rod 16, the first spring 14 is limited by the clamping block 15 and the connecting block 10.

[0042] The second limiting assembly comprises a second spring 17, the inner wall of the supporting plate 6 is fixedly connected with a plurality of second springs 17, one end of the second spring 17 close to the sample cup 8 is fixedly connected with a top rod 18, the top rod 18 is slidably connected to the inner wall of the supporting plate 6, the end of the top rod 18 away from the second spring 17 is fixedly connected with a friction block 19, the friction block 19 is tightly attached to the outer wall of the sample cup 8, and the bottom edge of the sample cup 8 and the top of the friction block 19 are both provided with a rounded corner, so that the sample cup 8 can be stably slid into the supporting plate 6 by pressing the sample cup 8.

[0043] Through the above structure design, the sample cup 8 is aligned with the groove at the center of the supporting plate 6, then the sample cup 8 is pressed downward, under the action of the bottom corner of the sample cup 8 and the top corner of the friction block 19, the top rod 18 is forced to slide to the inside of the supporting plate 6 along with the extrusion of the sample cup 8, so that the second spring 17 is deformed, and the sample cup 8 is clamped by the elastic force of the second spring 17, thereby completing the installation of the sample cup 8; the supporting plate 6 is moved above the thermostat 3, and the supporting plate 6 is suspended in the thermostat 3 by the plurality of L-shaped plates 7, then the sliding rod 11 is pushed to drive the clamping block 15 to move to the position close to the thermostat 3, after the clamping block 15 moves below the pressing rod 16, the clamping block 15 is clamped into the connecting block 10 under the elastic force of the first spring 14, so that the sliding rod 11 cannot move relative to the connecting block 10, at this time, the limiting tooth plate 12 is inserted into the corresponding tooth hole of the fixed tooth plate 9, and the baffle 13 is tightly attached to the bottom of the fixed tooth plate 9, thereby limiting the position of the supporting plate 6, then the inside of the sample cup 8 can be detected by the testing mechanism 2, after the detection is completed, the sample cup 8 can be directly taken out, and a new sample cup 8 to be tested is put into the supporting plate 6, then the next round of detection can be performed, when the L-shaped plate 7 and the connecting block 10 need to be disassembled, the clamping block 15 is retracted into the sliding rod 11 by pressing the pressing rod 16, then the sliding rod 11 is pulled to move away from the thermostat 3, so that the limiting tooth plate 12 and the baffle 13 are separated from the fixed tooth plate 9 respectively, the limitation between the connecting block 10 and the thermostat 3 is released, and the connecting block 10, the L-shaped plate 7 and the supporting plate 6 can be removed.

[0044] Example 2:

[0045] The penetration testing device provided in Example 1 has been further optimized, specifically, as follows: Figs. 2-3 As shown, the blocking mechanism 5 includes a blocking mesh plate 20. Support legs 22 are fixedly connected to the bottom of the blocking mesh plate 20 and near the four corners. The blocking mesh plate 20 and the support legs 22 are slidably connected to the inner wall of the constant temperature chamber 3. When the blocking mesh plate 20 slides into the constant temperature chamber 3, the four sides of the blocking mesh plate 20 are in contact with the inner wall of the constant temperature chamber 3.

[0046] The blocking mechanism 5 also includes a frame 21. The top of the blocking mesh plate 20 is fixedly connected to the frame 21. The frame 21 is slidably connected to the inner wall of the constant temperature box 3. The frame 21 is provided with a slope so that the asphalt particles that fall into the frame 21 can slide into the water.

[0047] Through the above structural design, when the sample cup 8 is tested, during the process of removing the needle inside the sample cup 8, some small particles of asphalt concrete may be attached to the needle and eventually fall into the water. The barrier mesh plate 20 can block the small particles in the water, reducing the possibility of small particles entering below the barrier mesh plate 20.

Claims

1. A penetration testing device comprising a support table (1), characterized in that: The top of the support table (1) is provided with a test mechanism (2), and the top of the support table (1) is fixedly connected with a constant temperature box (3), and the constant temperature box (3) is provided with a supporting mechanism (4), and the constant temperature box (3) is provided with a blocking mechanism (5); The supporting mechanism (4) comprises a supporting plate (6), an L-shaped plate (7), a sample cup (8), a pushing assembly, a first limiting assembly and a second limiting assembly, a plurality of L-shaped plates (7) are fixedly connected to the top of the supporting plate (6) and located on the front and back sides respectively, and the sample cup (8) is tightly attached to the top of the supporting plate (6) and located at the center.

2. The penetration testing device of claim 1, wherein, The pushing assembly comprises a fixed tooth plate (9), the outer wall of the constant temperature box (3) and located on the front and back sides is respectively fixedly connected with a fixed tooth plate (9), one end of the L-shaped plate (7) away from the supporting plate (6) is fixedly connected with a connecting block (10), the inner wall of the connecting block (10) is slidably connected with a sliding rod (11), one side of the sliding rod (11) close to the constant temperature box (3) is fixedly connected with a limiting tooth plate (12), the limiting tooth plate (12) is inserted into the fixed tooth plate (9), and the bottom of the limiting tooth plate (12) is fixedly connected with a baffle (13) which is tightly attached to the bottom of the fixed tooth plate (9).

3. The penetration testing device of claim 2, wherein, The first limiting assembly comprises a clamping block (15), the inner wall of the sliding rod (11) is slidably connected with the clamping block (15), the bottom of the clamping block (15) is fixedly connected with a first spring (14), the bottom end of the first spring (14) is fixedly connected to the inner wall of the sliding rod (11), the clamping block (15) is inserted into the connecting block (10), and the inner wall of the connecting block (10) is slidably connected with a pressing rod (16).

4. The penetration testing device of claim 1, wherein, The second limiting assembly comprises a second spring (17), a plurality of second springs (17) are fixedly connected to the inner wall of the supporting plate (6), one end of the second spring (17) close to the sample cup (8) is fixedly connected with a top rod (18), the top rod (18) is slidably connected to the inner wall of the supporting plate (6), one end of the top rod (18) away from the second spring (17) is fixedly connected with a friction block (19), and the friction block (19) is tightly attached to the outer wall of the sample cup (8).

5. The penetration testing device of claim 1, wherein, The blocking mechanism (5) comprises a blocking mesh plate (20), and the bottom of the blocking mesh plate (20) and close to the four corners is respectively fixedly connected with a supporting leg (22), and the blocking mesh plate (20) and the supporting leg (22) are slidably connected to the inner wall of the constant temperature box (3).

6. The penetration testing device of claim 5, wherein, The blocking mechanism (5) further comprises a frame (21), the top of the blocking mesh plate (20) is fixedly connected with the frame (21), and the frame (21) is slidably connected to the inner wall of the constant temperature box (3).

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