Sample fixing device and asphalt penetration tester

Abstract

The utility model provides a sample fixing device and an asphalt penetration tester. The sample fixing device comprises a bracket, four clamping rods are arranged on the top of the bracket in a circumferential array mode, the bottom ends of the clamping rods are connected with the bracket in a sliding mode, locking mechanisms used for locking or releasing the clamping rods and the bracket are arranged at the bottom ends of the clamping rods, and four supporting legs are arranged at the bottom of the bracket in a circumferential array mode. Side supporting mechanisms are uniformly arranged on the periphery of the bracket; according to the utility model, the bracket is supported in the water bath tub through the supporting legs, and the end parts of the side supporting mechanisms at the periphery of the bracket are propped against the inner side of the water bath tub, so that the stability of connection between the bracket and the water bath tub is improved, and the sample container is clamped between the clamping rods for fixation and is not easy to fluctuate along with water flow in the testing process; a sample can be stably fixed in the water bath basin, the operation convenience is improved, and the test precision is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of asphalt penetration detection, and specifically relates to a sample fixing device and an asphalt penetration tester. Background Technique

[0002] Before highway construction, it is necessary to use an asphalt penetration tester to detect the softness, consistency of asphalt, and its ability to resist shear failure. When measuring the asphalt penetration, the sample needs to be kept warm in an environment of 25 °C.

[0003] In the prior art, a Chinese utility model patent document with the authorization announcement number CN216747263U discloses a fully automatic penetration tester. It heats the sample through a water bath, making the sample in an environment of 25 °C. The bottom of the water bath rotates through a magnetic stirrer to stir the water in the water bath, ensuring that the water temperature is consistent. During the stirring process, the water inside the water bath generates fluctuations, which drives the sample placed on the container support to shake, causing inconvenience to the process of adjusting the standard needle to just contact the surface of the asphalt in the sample, and at the same time affecting the test accuracy.

[0004] Therefore, it is necessary to design a sample fixing device and an asphalt penetration tester that can stably fix the sample inside the water bath, improve the operation convenience, and ensure the test accuracy to solve the current technical problems. Summary of the Invention

[0005] Aiming at the deficiencies in the prior art, the utility model provides a sample fixing device and an asphalt penetration tester that can stably fix the sample inside the water bath, improve the operation convenience, and ensure the test accuracy.

[0006] The technical solution of the utility model is as follows: The sample fixing device includes a bracket. Four clamping rods are arranged in a circumferential array on the top of the bracket. The bottom end of the clamping rod is slidably connected to the bracket. A locking mechanism is provided at the bottom end of the clamping rod for locking or releasing it from the bracket. Four legs are arranged in a circumferential array at the bottom of the bracket, and side support mechanisms are evenly arranged around the bracket.

[0007] The clamping rod has a support column, and a elastic cylinder is sleeved outside the support column. The locking mechanism has a connecting screw fixedly arranged at the bottom end of the support column. An adjustment groove is radially opened on the bracket, and the connecting screw is assembled inside the adjustment groove. A gasket nut is assembled on the connecting screw below the bracket.

[0008] The elastic cylinder is a rubber cylinder or a silica gel cylinder that is press-fitted outside the support column.

[0009] The side support mechanism has a support tube fixedly arranged at the bottom of the bracket, an end of the support tube facing away from the bracket is internally threadedly equipped with a support screw, an end of the support screw facing away from the support tube is rotatably provided with a support seat, and a support head is fixedly arranged on the side of the support seat facing away from the support screw.

[0010] A handle is fixedly provided on one end of the support head close to the support seat, and anti-slip stripes are provided on the outer side of the handle.

[0011] The support screw is threadedly assembled with a locking nut corresponding to the end of the support tube.

[0012] The support head is a semi-cylindrical structure made of silicone or rubber, and one side of the plane of the support head is fixedly connected to the support seat.

[0013] The bracket has a supporting plate in a "cross" structure, and a plurality of supporting rings are arranged on the supporting plate in sequence from the inside to the outside, and the supporting rings and the supporting plate are an integral structure.

[0014] An asphalt penetration tester comprises a sample fixing device as described in any one of the above items.

[0015] Beneficial effects of the utility model:

[0016] (1) In the utility model, the bracket is supported inside the water bath by the legs, and the ends of the side support mechanisms around the bracket are against the inner side of the water bath, which improves the stability of the connection between the bracket and the water bath. The sample container is clamped between the clamping rods for fixing, which is not easy to fluctuate with the water flow during the test, and can stably fix the sample inside the water bath, thereby improving the convenience of operation and ensuring the test accuracy.

[0017] (2) The bottom end of the clamp rod is slidably connected to the bracket, and the bottom end of the clamp rod is provided with a locking mechanism for locking or releasing the clamp rod and the bracket. The bottom end of the clamp rod is released from the bracket by the locking mechanism, thereby enabling the clamp rod to be moved radially along the bracket to accommodate sample containers of different outer diameters. After the adjustment is completed, the bottom end of the clamp rod is locked from the bracket by the locking mechanism to ensure that the position of the clamp rod is fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the structural schematic diagrams of the sample fixing device in the utility model.

[0019] Figure 2 This is the second structural schematic diagram of the sample fixing device in the utility model. DETAILED DESCRIPTION

[0020] Various exemplary embodiments of the present utility model will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is not intended to limit the present utility model or its application or use in any way. The present utility model can be implemented in many different forms and is not limited to the embodiments described herein. These embodiments are provided to make the present utility model thorough and complete and to fully convey the scope of the present utility model to those skilled in the art. It should be noted that: unless otherwise specifically stated, the relative arrangements of components and steps, the compositions of materials, numerical expressions, and numerical values set forth in these embodiments should be construed as merely exemplary and not as limitations.

[0021] The "first", "second", and similar terms used in the present utility model do not denote any order, quantity, or importance, but are only used to distinguish different parts. Terms such as "comprising" or "including" mean that the elements preceding the term cover the elements listed after the term, and do not exclude the possibility of also covering other elements. Terms such as "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0022] As Figure 1 and 2 shown, the specimen fixing device includes a bracket 1. Four clamping rods 2 are arranged in a circumferential array at the top of the bracket 1. The bottom end of the clamping rod 2 is slidably connected to the bracket 1. A locking mechanism for locking or releasing the connection between the clamping rod 2 and the bracket 1 is provided at the bottom end of the clamping rod 2. Four legs 3 are arranged in a circumferential array at the bottom of the bracket 1. Side support mechanisms 4 are evenly arranged around the bracket 1. In this embodiment, the bracket 1 is supported inside the water bath through the legs 3. The ends of the side support mechanisms 4 around the bracket 1 abut against the inner side of the water bath, improving the stability of the connection between the bracket 1 and the water bath. The specimen container 5 is clamped between the clamping rods 2 for fixation, and is not easily fluctuated with the water flow during the test, can stably fix the specimen inside the water bath, improving the operation convenience and ensuring the test accuracy. The bottom end of the clamping rod 2 is slidably connected to the bracket 1, and a locking mechanism for locking or releasing the connection between the clamping rod 2 and the bracket 1 is provided at the bottom end of the clamping rod 2. By releasing the locking mechanism between the bottom end of the clamping rod 2 and the bracket 1, the clamping rod 2 can be moved radially along the bracket 1 to adapt to specimen containers with different outer diameters. After adjustment, by locking the bottom end of the clamping rod 2 to the bracket 1 through the locking mechanism, the position of the clamping rod 2 can be ensured to be fixed.

[0023] In some embodiments, the clamp rod 2 has a support column 21, and an elastic cylinder 22 is mounted on the outer side of the support column 21; the locking mechanism has a connecting screw 23 fixedly arranged at the bottom end of the support column 21, and an adjustment groove 11 is opened on the bracket 1 along its radial direction, and the connecting screw 23 is assembled inside the adjustment groove 11, and a gasket nut 24 is assembled on the connecting screw 23 below the bracket 1. Tightening the gasket nut 24 can lock the bottom end of the clamp rod 2 and the bracket 1; loosening the gasket nut 24 can release the bottom end of the clamp rod 2 and the bracket 1; the elastic cylinder 22 will produce a certain deformation after the sample container 5 is placed in it, thereby applying elastic force to the outside of the sample container 5 to clamp and fix the sample container 5.

[0024] In some embodiments, as a specific implementation of the elastic tube 22 , the elastic tube 22 is a rubber tube or a silicone tube that is interference fit on the outside of the support column 21 .

[0025] In some embodiments, the side support mechanism 4 has a support tube 41 fixedly arranged at the bottom of the bracket 1, and the support tube 41 has an internal threaded end facing away from the bracket 1 equipped with a support screw 42, and the support screw 42 has an end facing away from the support tube 41 rotatably provided with a support seat 44, and a support head 45 is fixedly arranged on the side of the support seat 44 facing away from the support screw 42. By rotating the support screw 42, the length of the side support mechanism 4 can be adjusted to adapt to water baths with different inner diameters. For water baths with inner diameters within a certain range, the support head 45 can be made to abut against the inner wall of the water bath tub by rotating and adjusting the support screw 42, thereby achieving fixation of the bracket 1 inside the water bath tub.

[0026] In some embodiments, a handle 43 is fixedly provided on one end of the support head 45 close to the support seat 44, and anti-slip stripes are provided on the outer side of the handle 43. The handle 43 with anti-slip stripes can facilitate the rotation and adjustment of the support screw 42. The handle 43 is a cylindrical structure integrated with the support screw 42.

[0027] In some embodiments, a locking nut 46 corresponding to the end of the support tube 41 is threadedly assembled on the support screw 42. After the length of the support screw 42 is adjusted, the locking nut 46 is screwed to make it butt against the end of the support tube 41, so that the support screw 42 and the support tube 41 can be locked.

[0028] In some embodiments, the support head 45 is a semi-cylindrical structure made of silicone or rubber, and one side of the plane of the support head 45 is fixedly connected to the support seat 44 .

[0029] In some embodiments, the bracket 1 has a support plate 12 in a "cross" structure, and a plurality of support rings 13 are sequentially arranged on the support plate 12 from the inside to the outside, and the support rings 13 and the support plate 12 are an integral structure.

[0030] In some embodiments, a penetration tester for asphalt is disclosed, which includes a specimen fixing device as described in any one of the above embodiments.

[0031] So far, the embodiments of the present invention have been described in detail. To avoid obscuring the concept of the present invention, some details well known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein based on the above description.

[0032] The above-described embodiments only represent some implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A specimen fixing device, characterized in that: It includes a bracket. Four clamping rods are circumferentially arrayed at the top of the bracket. The bottom ends of the clamping rods are slidably connected to the bracket. A locking mechanism for locking or releasing the clamping rods from the bracket is provided at the bottom ends of the clamping rods. Four legs are circumferentially arrayed at the bottom of the bracket. Side support mechanisms are evenly arranged around the bracket.

2. The specimen fixing device according to claim 1, characterized in that: The clamping rod has a support column, and an elastic cylinder is sleeved outside the support column. The locking mechanism has a connecting screw fixedly arranged at the bottom end of the support column. An adjustment groove is radially formed in the bracket, and the connecting screw is assembled inside the adjustment groove. A gasket nut is assembled on the connecting screw below the bracket.

3. The sample fixing device according to claim 2, wherein: The elastic cylinder is an interference-fitted rubber cylinder or silica gel cylinder sleeved outside the support column.

4. The sample fixing device according to claim 1, characterized in that: The side support mechanism has a support cylinder fixedly arranged at the bottom of the bracket. A support screw is threadedly assembled inside one end of the support cylinder away from the bracket. A support seat is rotatably arranged at one end of the support screw away from the support cylinder. A support head is fixedly arranged on one side of the support seat away from the support screw.

5. The sample fixing device according to claim 4, wherein: A handle is fixedly arranged at one end of the support head close to the support seat, and anti-slip stripes are arranged on the outside of the handle.

6. The specimen fixing device according to claim 4, characterized in that: A locking nut corresponding to the end of the support cylinder is threadedly assembled on the support screw.

7. The specimen fixing device according to claim 4, characterized in that: The support head is a semi-cylindrical structure made of silica gel or rubber, and the flat side of the support head is fixedly connected to the support seat.

8. The specimen fixing device according to claim 1, characterized in that: The bracket has a tray in a "cross" structure. A plurality of tray rings are sequentially arranged on the tray from inside to outside, and the tray rings and the tray are an integral structure.

9. An asphalt penetration tester, characterized in that: It includes the specimen fixing device according to any one of claims 1 to 8.

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