CN212254896U

CN212254896U - Comprehensive strength tester for pavement material

Info

Publication number: CN212254896U
Application number: CN202020549686.0U
Authority: CN
Inventors: 王文隆; 蔡明明
Original assignee: Lishui Hengtong Traffic Engineering Testing Co ltd
Current assignee: Lishui Hengtong Traffic Engineering Testing Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-12-29
Anticipated expiration: 2030-04-14

Abstract

The utility model relates to a measuring equipment technical field, specifically speaking relates to a road surface material intensity combined test appearance. It includes the equipment box, installs the sample pusher at equipment box top and installing the test jig at equipment box top, the deck plate is installed at the top of equipment box, sample pusher is including setting up the pneumatic cylinder at the inside of equipment box, the epaxial coaxial arrangement of piston of pneumatic cylinder has the ejector pin, the ejector pin passes the deck plate, the sample platform is installed at the top of ejector pin, interior protection ring is installed at the top of sample platform, the interior wall annular array of interior protection ring has three spring, outside sunken arc is installed to the other end of spring and is supported the board. The utility model discloses a structural design can prevent that the skew takes place for the road surface material atress, improves test data's accuracy, blocks through can stopping cracked road surface material, prevents that it from splashing, is worth popularizing and applying.

Description

Comprehensive strength tester for pavement material

Technical Field

The utility model relates to a measuring equipment technical field, specifically speaking relates to a road surface material intensity combined test appearance.

Background

The strength tester for pavement material is a multifunctional tester for highway subgrade material, and can be used for making several tests, such as compression strength, splitting strength and modulus of elasticity, etc. of cement-lime stabilized soil, marshall test of asphalt concrete and bearing ratio test of subgrade soil and several pavement materials. The existing pavement material strength tester directly places pavement materials on a bearing table when testing, and when extruding and testing, the pavement materials are mostly uneven structures, so that the stress points are easy to shift when being extruded, and further the data of the test are deviated, and meanwhile, after the pavement materials are broken, the materials are easy to splash, and the instrument or the tester is easy to hurt.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a road surface material intensity combined test appearance to solve the problem that proposes among the above-mentioned background art.

In order to achieve the purpose, the utility model provides a comprehensive tester for strength of pavement materials, which comprises an equipment box, a sample pushing device arranged on the top of the equipment box and a testing frame arranged on the top of the equipment box, wherein the top of the equipment box is provided with a table top plate, the sample pushing device comprises a hydraulic cylinder arranged inside the equipment box, a mandril is coaxially arranged on a piston shaft of the hydraulic cylinder, the mandril passes through the table top plate, the top of the mandril is provided with a sample table, the top of the sample table is provided with an inner protection ring, the inner wall annular array of the inner protection ring is provided with three springs, the other end of each spring is provided with an arc butt plate which is concave outwards, the testing frame comprises a pair of supporting vertical rods arranged on the table top plate, a supporting table is arranged between the two supporting vertical rods, and the bottom of the supporting table is, the test head and the sample platform are positioned on the same horizontal straight line.

As a further improvement of the technical scheme, the outer wall of the sample table is symmetrically provided with linear sliding chutes, the outer part of the sample table is provided with an outer protection ring, the size of the outer protection ring is larger than that of the sample table, the outer protection ring and the sample table are concentrically arranged, the inner wall of the outer protection ring is symmetrically provided with sliding rods, and the sliding rods are in sliding connection with the linear sliding chutes.

As a further improvement of the technical scheme, the top of the linear sliding groove is communicated with an upper limiting groove, the bottom of the linear sliding groove is communicated with a lower limiting groove, and the upper limiting groove and the lower limiting groove are both perpendicular to the linear sliding groove.

As a further improvement of the technical scheme, the outer wall of the ejector rod is sleeved with a corrugated pipe, the top of the corrugated pipe is arranged at the bottom of the sample table, and the bottom of the corrugated pipe is arranged at the top of the table top plate.

As a further improvement of the technical scheme, the outer wall of the joint of the supporting upright rod and the deck plate is sleeved with a shock pad.

As a further perfection of this technical scheme, the top outer wall that supports the pole setting is carved with the external screw thread groove, support the pole setting and pass a supporting bench, just supporting bench and support pole setting sliding connection, the upper and lower both ends that support the pole setting and be close to a supporting bench are provided with adjusting bolt, adjusting bolt and external screw thread groove threaded connection.

Compared with the prior art, the beneficial effects of the utility model are that:

1. in this pavement material intensity combined test appearance, set up curved board that supports, three aspect carries out the centre gripping simultaneously to pavement material fixed, prevents that the pavement material atress from taking place the skew, improves test data's accuracy.

2. In the comprehensive tester for the strength of the pavement material, the inner protection ring is arranged, and the broken pavement material is blocked by the inner protection ring and left in the sample table to prevent the broken pavement material from splashing.

3. In the comprehensive tester for the strength of the pavement material, the outer protection ring is arranged, so that the sample table is positioned inside the outer protection ring, and the effect of preventing the pavement material from splashing is further improved.

Drawings

Fig. 1 is a perspective view of the present invention;

fig. 2 is an exploded view of the sample pushing device of the present invention;

FIG. 3 is a perspective view of the sample stage of the present invention;

fig. 4 is a perspective view of the outer protective ring of the present invention;

fig. 5 is a perspective view of the testing jig of the present invention.

Description of reference numerals: the device comprises an equipment box 1, a table top plate 1-1, a sample pushing device 2, a hydraulic cylinder 2-1, a top rod 2-11, a corrugated pipe 2-12, a sample table 2-20, an inner protection ring 2-21, a spring 2-22, a resisting plate 2-23, a linear sliding groove 2-24, an upper limiting groove 2-25, a lower limiting groove 2-26, an outer protection ring 2-3, a sliding rod 2-31, a test frame 3, a support upright rod 3-1, a support table 3-2, a test head 3-3, a shock pad 3-4, an external thread groove 3-5 and an adjusting bolt 3-6.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to figures 1 to 5 of the drawings: the utility model provides a road surface material intensity combined test appearance, including equipment box 1, install at the sample pusher 2 at 1 top of equipment box and install the test jig 3 at 1 top of equipment box, deck plate 1-1 is installed at the top of equipment box 1, sample pusher 2 is including setting up the pneumatic cylinder 2-1 in equipment box 1 inside, coaxial arrangement has ejector pin 2-11 on the pneumatic cylinder 2-1 piston shaft, be convenient for drive ejector pin 2-11 through pneumatic cylinder 2-1 and be sharp reciprocating motion, ejector pin 2-11 passes deck plate 1-1, sample platform 2-2 is installed at the top of ejector pin 2-11, be convenient for drive the straight line reciprocating motion of sample platform 2-2 through ejector pin 2-11.

In the embodiment, the inner protection ring 2-21 is arranged at the top of the sample table 2-2, the inner protection ring 2-21 is made of a stainless steel plate, and the material quality is hard and not easy to damage, so that the splashed objects of the pavement materials generated by extrusion can be blocked to a certain extent.

Specifically, the inner wall of the inner protection ring 2-21 is annularly arrayed with three springs 2-22, one end of each spring 2-22 is welded and fixed on the inner wall of the inner protection ring 2-21 to realize the fixation of the springs 2-22 and the inner protection ring 2-21, the other end of each spring 2-22 is provided with an arc-shaped abutting plate 2-23 which is sunken outwards, the arc-shaped abutting plates 2-23 are abutted to the pavement material through the elasticity of the springs 2-22, and meanwhile, the three abutting plates 2-23 are used for clamping and fixing the pavement material from three aspects, so that the pavement material is prevented from being stressed and deviating, and the accuracy of test data is improved.

Further, the test rack 3 comprises a pair of supporting upright rods 3-1 arranged on the table panel 1-1, a supporting table 3-2 is arranged between the two supporting upright rods 310, a test head 3-30 is arranged at the bottom of the supporting table 3-2, the test head 3-3 can select a pressure sensor, when the pavement material abuts against the pressure sensor, the pressure sensor transmits the pressure value borne by the pavement material to a receiver, the pressure value can be read, the pressure value borne by the pavement material is recorded after the pavement material is cracked, the compression resistance degree of the pavement material is calculated, the test head 3-3 and the sample table 2-2 are located on the same horizontal straight line, and when the sample table 2-2 moves upwards, the pavement material in the sample table 2-2 is aligned to the test head 3-3.

When the pavement material strength comprehensive tester is used for placing the pavement material, the three resisting plates 2-23 are pulled backwards, the resisting plates 2-23 drive the springs 2-22 to compress, then the pavement material to be tested is placed on the sample table 2-2, at the moment, the resisting plates 2-23 are loosened, and the springs 2-22 resist the resisting plates 2-23 to the surface of the pavement material from three directions through the elasticity of the springs 2-22, so that the pavement material is fixed;

when the comprehensive tester for the strength of the pavement material is used for testing the pavement material, the hydraulic cylinder 2-1 is firstly powered on to work, the hydraulic cylinder 2-1 ejects the ejector rod 2-11 and drives the sample table 2-2 to push towards one side of the test head 3-3, so that the test head 3-3 is abutted to the surface of the pavement material in the sample table 2-2, the hydraulic cylinder 2-1 stops working until the pavement material is broken, and the broken pavement material is blocked by the inner protection ring 2-21 and is left in the sample table 2-2, so that the broken pavement material is prevented from splashing.

In order to further prevent the pavement material from splashing, the outer wall of the sample stage 2-2 of the embodiment is symmetrically provided with linear sliding grooves 2-24, the outer part of the sample stage 2-2 is provided with an outer protection ring 2-3, the outer protection ring 2-3 is made of a stainless steel plate material, the material quality is hard and is not easy to damage, certain blocking can be performed on the splashed pavement material, the size of the outer protection ring 2-3 is larger than that of the sample stage 2-2, the outer protection ring 2-3 and the sample stage 2-2 are concentrically arranged, the inner wall of the outer protection ring 2-3 is symmetrically provided with sliding rods 2-31, the sliding rods 2-31 are in sliding connection with the linear sliding grooves 2-24, the outer protection ring 2-3 slides in the linear sliding grooves 2-24 through the sliding rods 2-31, so as to conveniently adjust the positions of the outer protection ring, the top of the linear sliding groove 2-24 is communicated with an upper limiting groove 2-25, the bottom of the linear sliding groove 2-24 is communicated with a lower limiting groove 2-26, the upper limiting groove 2-25 and the lower limiting groove 2-26 are perpendicular to the linear sliding groove 2-24, and a sliding rod 2-31 can be conveniently clamped in the upper limiting groove 2-25 or the lower limiting groove 2-26.

When the outer protection ring 2-3 of the embodiment is used specifically, firstly, the sliding rod 2-31 is clamped in the lower limiting groove 2-26, the height of the outer protection ring 2-3 is flush with the sample stage 2-2, at this time, the pavement material is conveniently placed in the sample stage 2-2, then, when the outer protection ring 2-3 is rotated, the sliding rod 2-31 slides into the linear sliding groove 224 from the lower limit groove 2-26, the outer protection ring 2-3 is continuously lifted, the sliding rod 2-31 slides to the top along the linear sliding groove 2-24, the outer protection ring 2-3 is rotated again, so that the slide bars 2-31 are clamped into the upper limit grooves 2-25 from the linear slide grooves 2-24, at the moment, the sample table 2-2 is positioned inside the outer protection ring 2-3, so that the effect of preventing the road surface materials from splashing is further improved.

In addition, the outer wall of the ejector rod 2-11 is sleeved with a corrugated pipe 2-12, the top of the corrugated pipe 2-12 is installed at the bottom of the sample table 2-2, the bottom of the corrugated pipe 2-12 is installed at the top of the table top plate 1-1, and the corrugated pipe 2-12 is fixed between the sample table 2-2 and the table top plate 1-1 through fixing glue adhesion, so that sundries on the surface of the table top plate 1-1 are prevented from being clamped between the ejector rod 2-11 and the table top plate 1-1, and movement blockage of the ejector rod 2-11 is reduced.

In addition, the outer wall of the joint of the supporting upright rod 3-1 and the table top plate 1-1 is sleeved with a damping pad 3-4, and the damping pad 3-4 is made of rubber materials, so that the vibration force generated when the supporting upright rod 3-1 is impacted is reduced.

It is worth to be noted that an external thread groove 3-5 is carved on the outer wall of the top of the supporting upright rod 3-1, the supporting upright rod 3-1 penetrates through the supporting platform 3-2, the supporting platform 3-2 is in sliding connection with the supporting upright rod 3-1, two ends of the supporting platform 3-2 are provided with through holes in sliding connection with the supporting upright rod 3-1, adjusting bolts 3-6 are arranged at the upper end and the lower end of the supporting upright rod 3-1, which are close to the supporting platform 3-2, the adjusting bolts 3-6 are in threaded connection with the external thread groove 3-5, and the positions of the supporting platform 3-2 and the supporting upright rod 3-1 can be adjusted by adjusting the positions of the adjusting bolts 3-6 and the external thread groove 3-5 at the upper.

The following examples are provided to facilitate a better understanding of the present invention, but are not intended to limit the present invention. The following examples are only a part of the present invention, and not all of them. The components used in the following examples are commercially available unless otherwise specified. The control circuit in the following embodiments is implemented in a conventional control manner unless otherwise specified. In the present invention, unless otherwise specified, the terms "upper, lower, left, right, inner, outer" and the like included in the terms "upper", "lower", "left", "right", "inner", "outer" and the like are used merely to indicate the orientation of the terms in a conventional use state or to be commonly understood by those skilled in the art. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only preferred examples of the present invention, and is not intended to limit the present invention, and that the present invention can have various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications all fall into the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a road surface material intensity combined test appearance, includes equipment box (1), installs sample pusher (2) at equipment box (1) top and install test jig (3) at equipment box (1) top, its characterized in that: the device comprises an equipment box (1), a table top plate (1-1) is installed at the top of the equipment box (1), a sample pushing device (2) comprises a hydraulic cylinder (2-1) arranged inside the equipment box (1), a push rod (2-11) is coaxially installed on a piston shaft of the hydraulic cylinder (2-1), the push rod (2-11) penetrates through the table top plate (1-1), a sample table (2-2) is installed at the top of the push rod (2-11), an inner protection ring (2-21) is installed at the top of the sample table (2-2), three springs (2-22) are arranged in an annular array on the inner wall of the inner protection ring (2-21), an arc-shaped abutting plate (2-23) which is sunken outwards is installed at the other end of each spring (2-22), and a test frame (3) comprises a pair of supporting vertical rods (3-1) installed on the table top plate (1-1), a supporting platform (3-2) is arranged between the two supporting upright rods (3-1), and a testing head (3-3) is arranged at the bottom of the supporting platform (3-2).

2. The comprehensive strength tester for pavement materials according to claim 1, wherein: the outer wall of the sample table (2-2) is symmetrically provided with linear sliding grooves (2-24), the outer portion of the sample table (2-2) is provided with an outer protection ring (2-3), the size of the outer protection ring (2-3) is larger than that of the sample table (2-2), the outer protection ring (2-3) and the sample table (2-2) are concentrically arranged, sliding rods (2-31) are symmetrically installed on the inner wall of the outer protection ring (2-3), and the sliding rods (2-31) are in sliding connection with the linear sliding grooves (2-24).

3. The comprehensive strength tester for pavement materials according to claim 2, wherein: the top of the straight sliding chute (2-24) is communicated with an upper limiting groove (2-25), the bottom of the straight sliding chute (2-24) is communicated with a lower limiting groove (2-26), and the upper limiting groove (2-25) and the lower limiting groove (2-26) are perpendicular to the straight sliding chute (2-24).

4. The comprehensive tester for the strength of the pavement material according to claim 1, wherein: the outer wall of the ejector rod (2-11) is sleeved with a corrugated pipe (2-12), the top of the corrugated pipe (2-12) is installed at the bottom of the sample table (2-2), and the bottom of the corrugated pipe (2-12) is installed at the top of the table top plate (1-1).

5. The comprehensive strength tester for pavement materials according to claim 1, wherein: the outer wall of the joint of the supporting upright rod (3-1) and the deck plate (1-1) is sleeved with a shock pad (3-4).

6. The comprehensive strength tester for pavement materials according to claim 1, wherein: the supporting upright rod is characterized in that an outer thread groove (3-5) is carved on the outer wall of the top of the supporting upright rod (3-1), the supporting upright rod (3-1) penetrates through the supporting platform (3-2), the supporting platform (3-2) is in sliding connection with the supporting upright rod (3-1), adjusting bolts (3-6) are arranged at the upper end and the lower end, close to the supporting platform (3-2), of the supporting upright rod (3-1), and the adjusting bolts (3-6) are in threaded connection with the outer thread groove (3-5).