CN219736987U - A fixed fixture for thickness cutting of asphalt mixture cylinder specimens - Google Patents

Abstract

The utility model discloses a fixed fixture for cutting the thickness of an asphalt mixture cylinder specimen, and relates to the technical field related to cutting fixtures. A test piece is provided, and positioning components are movable and interspersed at both ends of the test piece. The positioning component includes a base, and a screw rod is symmetrically provided at the upper end of the base; a mounting groove is provided in the middle of the base, and a buffer spring is provided at the bottom of the installation groove. The upper end of the positioning platform is connected to the positioning platform. The upper end of the positioning platform is symmetrically provided with a limit spring. One end of the limit spring is provided with a positioning block; the middle part of the screw rod is movable and provided with a side support component; the upper end of the screw rod is movable and provided with a fixed component. The utility model is used to solve the problem that when cutting the thickness of a cylindrical specimen, due to poor fixation effect of the clamp, vibration will occur during cutting, causing the cutting surface to be unable to be level, thus affecting the results of the splitting experiment.

Description

A fixed fixture for thickness cutting of asphalt mixture cylinder specimens

Technical field

The utility model relates to the technical field related to cutting fixtures, and is specifically a fixed fixture for cutting the thickness of an asphalt mixture cylinder specimen.

Background technique

Asphalt mixture cylinder specimen refers to a compacted asphalt mixture sample with a cylindrical shape and is used for various physical tests, such as indirect tensile strength, fatigue and modulus.

The asphalt mixture splitting test refers to a test method that measures the mechanics of the asphalt mixture when it splits and fails or is in the elastic stage at a specified temperature and loading rate by applying tensile force to a cylindrical specimen until the specimen splits. Properties, it can also be used when selecting asphalt mixture mechanical design parameters in asphalt pavement structural design and evaluating the low-temperature crack resistance of asphalt mixtures. The splitting strength of the specimen is calculated based on the maximum value of the test load and the height of the specimen. Splitting tests can be performed at different temperatures to simulate different road conditions.

Before carrying out the splitting experiment, the cylindrical specimen needs to be cut. In the existing technology, when cutting the thickness of the cylindrical specimen, due to the poor fixation effect of the fixture, vibration will occur during cutting, resulting in cutting. The surface cannot be level, which affects the results of the splitting experiment. Therefore, a fixed fixture for thickness cutting of asphalt mixture cylinder specimens is needed to solve the above problems.

Utility model content

In view of the above problems, this utility model provides a fixed fixture for thickness cutting of cylindrical specimens of asphalt mixture, which is used to solve the problem that when cutting the thickness of cylindrical specimens, due to the poor fixing effect of the fixture, vibration will occur during cutting. Deviation occurs, causing the cutting surface to be unable to be level, which affects the results of the splitting experiment.

In order to achieve the above purpose, the technical solution adopted by this utility model is:

A fixed fixture for thickness cutting of asphalt mixture cylindrical specimens, including legs, the upper ends of the legs are provided with installation components, the installation components include a workbench, the upper end of the workbench is provided with a test piece, and both ends of the test piece are movable and interspersed A positioning component is provided. The positioning component includes a base. The upper end of the base is symmetrically provided with a screw rod; A limit spring is provided, and one end of the limit spring is provided with a positioning block; the middle part of the screw rod is movablely provided with a side support component; the upper end of the screw rod is movablely provided with a fixed component, and the fixed component includes a mounting plate, and the upper and lower ends of the mounting plate A second fixed ring is provided; a screw rod is provided in the middle of the mounting plate, a fixed seat is provided in the middle of the screw rod, and the lower end of the screw rod is connected to the fixed plate; a support component is provided in the middle of the specimen.

Compared with the existing technology, the beneficial effects of this utility model are: this device can realize the fixation of the cylindrical specimen when cutting in the thickness direction, can realize the positioning of the cylindrical specimen, and reduce the impact of vibration during cutting on plane cutting. , improve the precision during cutting.

As a further improvement of the above technical solution, the positioning table is concave, and the buffer spring is fixed in the groove of the positioning table; the bottom of the positioning table is symmetrically provided with guide pillars; one side of the positioning block is arc-shaped, and is provided with a positioning pad.

The technical purposes of the above improvements are: the buffer spring reduces vibration during cutting; the guide column enables the positioning table to move up and down.

As a further improvement of the above technical solution, the workbench is in a semi-circular shape, with strip grooves provided on both sides of the workbench. Bolts inserted through the strip grooves are provided at the lower ends of the positioning component and the support component, and a nut is movably provided at one end of the bolt.

The technical purpose of the above improvements is to achieve the fixation of the positioning component and the fixed component on the workbench and to adjust the position according to the specimen.

As a further improvement of the above technical solution, the side support assembly includes a rotating block, which is interspersed on the screw rod. Support rods are provided at both ends of the rotating block. One end of the support rod is provided with a rotating seat, and the other end of the support rod is provided with a rotating seat. There are side support blocks; the support rod is fixed by the first fixing ring.

The technical purpose of the above improvements is: the side support components can fix both sides of the specimen and improve the fixing effect.

As a further improvement of the above technical solution, the support assembly includes a support base, the upper end of the support base is semicircular and is provided with a support pad.

The technical purpose of the above improvements is to use the support assembly to provide fixed support for the specimen during cutting.

As a further improvement of the above technical solution, the upper end of the screw rod is provided with a handle; the lower end of the fixed plate is provided with a telescopic pad for fitting the specimen.

The technical purposes of the above improvements are: the handle can be used to install and fix the screw; the telescopic pad can be used to close to the specimen during cutting and reduce the impact of vibration on cutting.

Description of the drawings

Figure 1 is a schematic structural diagram of the utility model.

Figure 2 is a schematic side view of the utility model.

Figure 3 is a schematic diagram of the support assembly in Figure 1.

Figure 4 is an enlarged schematic diagram of point A in Figure 2.

In the picture: 1. Legs; 2. Installation components; 201. Workbench; 202. Strip groove; 203. Bolts; 204. Nuts; 3. Support components; 301. Support seat; 302. Support pad; 4. Test 5. Positioning component; 501. Base; 502. Screw; 503. Installation slot; 504. Buffer spring; 505. Guide column; 506. Positioning table; 507. Limit spring; 508. Positioning block; 509. Positioning Pad; 6. Side support component; 601. Rotating seat; 602. Support rod; 603. First fixed ring; 604. Rotating block; 605. Side support block; 7. Fixed component; 701. Installation plate; 702. Second Fixed ring; 703, screw; 704, handle; 705, fixed seat; 706, fixed plate; 707, telescopic pad.

Detailed ways

In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the present utility model is described in detail below in conjunction with the embodiments. The description in this part is only exemplary and explanatory, and should not have any influence on the protection scope of the present utility model. limiting effect.

As shown in Figures 1 to 4, a fixed fixture for cutting the thickness of an asphalt mixture cylinder specimen 4 includes a leg 1. The upper end of the leg 1 is provided with a mounting component 2. The mounting component 2 includes a workbench 201. The upper end of the table 201 is provided with a test piece 4, and a positioning assembly 5 is provided at both ends of the test piece 4. The positioning assembly 5 includes a base 501. The upper end of the base 501 is symmetrically provided with a screw rod 502; a mounting slot is provided in the middle of the base 501 503. A buffer spring 504 is provided at the bottom of the installation groove 503. The upper end of the buffer spring 504 is connected to the positioning platform 506. The upper end of the positioning platform 506 is symmetrically provided with a limit spring 507. One end of the limit spring 507 is provided with a positioning block 508; screw rod The middle part of 502 is movablely provided with a side support component 6; the upper end of the screw rod 502 is movablely provided with a fixed component 7. The fixed component 7 includes a mounting plate 701. The upper and lower ends of the mounting plate 701 are provided with second fixing rings 702; the mounting plate A screw rod 703 is provided in the middle of 701, a fixed seat 705 is provided in the middle of the screw rod 703, and the lower end of the screw rod 703 is connected to the fixed plate 706; the support assembly 3 is provided in the middle of the specimen 4.

Specifically, a workbench 201 is fixedly provided on the upper end of the support leg 1, and a plurality of buffer springs 504 are provided.

As shown in Figure 1, as a preferred embodiment of the above embodiment, the positioning platform 506 is concave, and the buffer spring 504 is fixed in the groove of the positioning platform 506; the bottom of the positioning platform 506 is symmetrically provided with guide posts 505; the positioning block 508 is One side is arc-shaped and is provided with a positioning pad 509.

Specifically, the positioning pad 509 is a rubber pad, and the upper end of the guide post 505 is fixed to the grooves on both sides of the positioning platform 506 .

As shown in Figure 1, as a preferred embodiment of the above embodiment, the workbench 201 is in the shape of a semi-circular shape. Strip grooves 202 are provided on both sides of the workbench 201. The lower ends of the positioning assembly 5 and the support assembly 3 are provided with intersecting strip grooves. 202 bolt 203, one end of the bolt 203 is movably provided with a nut 204.

Specifically, the shape of the base 501 and the support base 301 is the same as that of the positioning platform 506, and they fit together with the positioning platform 506.

As shown in Figure 1, as a preferred embodiment of the above embodiment, the side support assembly 6 includes a rotating block 604, which is inserted through the screw rod 502. Support rods 602 are inserted through both ends of the rotating block 604. The support rods 602 One end of the support rod 602 is provided with a rotating seat 601, and the other end of the support rod 602 is provided with a side support block 605; the support rod 602 is fixed by a first fixing ring 603.

Specifically, the support rod 602 is arranged symmetrically, and a rubber pad is provided at the contact surface between the side support block 605 and the specimen 4 .

As shown in Figure 1, as a preferred embodiment of the above embodiment, the support assembly 3 includes a support base 301. The upper end of the support base 301 is semicircular and is provided with a support pad 302.

Specifically, there are two support seats 301, and the cutting position is between the two support seats 301.

As shown in Figure 1, as a preferred embodiment of the above embodiment, the upper end of the screw rod 703 is provided with a handle 704; the lower end of the fixed plate 706 is provided with a telescopic pad 707 for fitting the test piece 4.

Specifically, the telescopic pad 707 is made of telescopic material and can fit according to the shape of the specimen 4.

The specific working principle of this utility model: first determine the cutting point on the test piece 4, then place the test piece 4 on the support assembly 3, the support assembly 3 adjusts the position of the support base 301 according to the cutting point, and then passes the bolt 203 through the bar The groove 202 is fixed with nuts 204, and then the positioning assembly 5 is moved to both ends of the test piece 4. The base 501 passes through the strip groove 202 with bolts 203 and is fixed with nuts 204. The test piece 4 contacts the positioning block 508, and one side of the positioning block 508 The limit spring 507 presses the positioning block 508 close to the test piece 4, and the positioning pad 509 is in contact with the test piece 4. The positioning table 506 moves up and down under the action of the buffer spring 504 and the guide column 505, and the rotating seat 601 is screwed into the screw rod. 502, select the support rod 602 through the rotating base 601 so that the side support block 605 fixes the test piece 4, then fix the support rod 602 through the first fixing ring 603, and then install the mounting plate 701 into the screw rod 502 and fix it through the second fixing ring 702 , rotate the handle 704 to turn the screw 703, and the screw 703 descends so that the fixed plate 706 moves downward so that the telescopic pad 707 contacts the specimen 4, and then the screw 703 is fixed through the fixed seat 705, and finally the specimen 4 is cut, and the buffer spring 504 is used during cutting It can reduce the vibration during cutting; the beneficial effects of the utility model are: this device can realize the fixation of the cylindrical specimen 4 when cutting in the thickness direction, can realize the positioning of the cylindrical specimen 4, and reduce the vibration during cutting on the plane cutting. influence, improving the accuracy of cutting.

It should be noted that, as used herein, the terms "include", "comprises" or any other variation thereof are intended to cover a non-exclusive inclusion, such that a process, method, article or device that includes a series of elements not only includes those elements, It also includes other elements not expressly listed or inherent in the process, method, article or equipment.

This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and the core idea of the present invention. The above are only the preferred embodiments of the present utility model. It should be pointed out that due to the limitations of written expressions, there are objectively unlimited specific structures. For those of ordinary skill in the art, without departing from the principles of the present utility model, Below, several improvements, modifications or changes can also be made, or the above technical features can be combined in an appropriate manner; these improvements, modifications or combinations, or the ideas and technical solutions of the utility model can be directly applied to other applications without improvement. Any situation should be regarded as the protection scope of the present utility model.

Claims (6)

1. The utility model provides a fixed fixture for cutting the thickness of an asphalt mixture cylinder test piece, which comprises supporting legs (1) and is characterized in that the upper end of the supporting legs (1) is provided with a mounting component (2), the mounting component (2) comprises a workbench (201), the upper end of the workbench (201) is provided with a test piece (4), two ends of the test piece (4) are movably inserted and provided with a positioning component (5), the positioning component (5) comprises a base (501), and screw rods (502) are symmetrically arranged at the upper end of the base (501); the middle of the base (501) is provided with a mounting groove (503), the bottom of the mounting groove (503) is provided with a buffer spring (504), the upper end of the buffer spring (504) is connected with a positioning table (506), the upper end of the positioning table (506) is symmetrically provided with a limiting spring (507), and one end of the limiting spring (507) is provided with a positioning block (508); a side support component (6) is movably inserted in the middle of the screw rod (502); the upper end of the screw rod (502) is movably inserted and provided with a fixing assembly (7), the fixing assembly (7) comprises a mounting plate (701), and the upper end and the lower end of the mounting plate (701) are provided with second fixing rings (702); a screw (703) is inserted in the middle of the mounting plate (701), a fixed seat (705) is movably inserted in the middle of the screw (703), and the lower end of the screw (703) is connected with a fixed plate (706); the middle of the test piece (4) is provided with a supporting component (3).

2. The fixture for thickness cutting of asphalt mixture cylinder test pieces according to claim 1, wherein said positioning table (506) is concave, and said buffer spring (504) is fixed in a groove of said positioning table (506); guide posts (505) are symmetrically arranged at the bottom of the positioning table (506); one side of the positioning block (508) is arc-shaped, and is provided with a positioning pad (509).

3. The fixing clamp for cutting thickness of asphalt mixture cylinder test pieces according to claim 1, wherein the workbench (201) is in a semi-square shape, strip-shaped grooves (202) are formed in two sides of the workbench (201), bolts (203) penetrating through the strip-shaped grooves (202) are arranged at the lower ends of the positioning assembly (5) and the supporting assembly (3), and nuts (204) are movably arranged at one ends of the bolts (203).

4. The fixing clamp for cutting thickness of asphalt mixture cylinder test pieces according to claim 1, wherein the side support assembly (6) comprises a rotating block (604), the rotating block (604) is arranged on a screw rod (502) in a penetrating manner, supporting rods (602) are arranged at two ends of the rotating block (604) in a penetrating manner, a rotating seat (601) is arranged at one end of each supporting rod (602), and a side support block (605) is arranged at the other end of each supporting rod (602); the support rod (602) is fixed through a first fixing ring (603).

5. The fixing clamp for cutting thickness of asphalt mixture cylinder test pieces according to claim 1, wherein the supporting component (3) comprises a supporting seat (301), and the upper end of the supporting seat (301) is semicircular and is provided with a supporting pad (302).

6. The fixing clamp for cutting the thickness of the asphalt mixture cylinder test piece according to claim 1, wherein a handle (704) is arranged at the upper end of the screw (703); the lower end of the fixing plate (706) is provided with a telescopic pad (707) for attaching the test piece (4).