CN112458845A

CN112458845A - Asphalt pavement loose paving thickness tester

Info

Publication number: CN112458845A
Application number: CN202010257008.1A
Authority: CN
Inventors: 吕世宽
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2021-03-09

Abstract

The invention discloses a measuring instrument for measuring the loose pavement thickness of an asphalt pavement, which mainly relates to the technical field of road construction equipment and comprises a base, a lead screw, a speed reducer, a driving motor and a limiting post, wherein a graduated scale is arranged on the limiting post, a nut matched with the lead screw is arranged on the lead screw, a pointer pointing to the graduated scale is arranged at one point of the nut, the other end of the nut is connected with a probe, the lower part of the probe forms an arc-shaped bulge, a through hole penetrating through the center of the probe is arranged inside the arc-shaped bulge, a limiting plate corresponding to the arc-shaped bulge is arranged at the end, close to the center end of the probe, of the through hole, a fixing plate is arranged at the end, close to the center of the probe, a ball post is arranged between the limiting plate and the fixing plate, the ball post is connected with the fixing plate through a reset spring, the thickness of the loose pavement is accurate, the accuracy of measured data is high, the efficiency is high, and the influence of external factors is not easy to be caused.

Description

Asphalt pavement loose paving thickness tester

Technical Field

The invention mainly relates to the technical field of road construction equipment, in particular to a bituminous pavement loose paving thickness tester.

Background

In the past decades, the requirements for construction quality are increased when the expressway in China is rapidly developed after the expressway in China passes through a rapid development period. The quality of the pavement construction influences the quality of the whole highway construction project, parameters such as the thickness of a loose layer have very important influence on the service performance and service life of a formed pavement and the service condition of materials, the loose layer thickness refers to the thickness of the asphalt mixture after the asphalt mixture is spread by a spreading machine before the asphalt pavement is compacted, more and more expressways adopt the asphalt mixture to construct the pavement, the detection of the loose layer thickness of the asphalt mixture in the construction process is a necessary procedure, the detection of the loose layer thickness of the asphalt mixture determines the characteristic of the total thickness of the compacted pavement, the problem that the lack of the loose layer thickness often causes the following problems, the porosity of a structural layer of the pavement is too large, early water damage is easily caused, and the detection of the loose layer thickness of the asphalt pavement is significant.

Asphalt pavement loose thickness apparatus on the market at present, asphalt pavement loose thickness's measured data accuracy is low, and is inefficient, receives external factor's influence and the condition of damage appears easily simultaneously, and life is short, is difficult to satisfy market and people's user demand.

Disclosure of Invention

In view of the defects and shortcomings in the prior art, the invention aims to provide a bituminous pavement loose thickness tester.

In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides an asphalt pavement loose thickness apparatus which characterized in that: install the lead screw on the base including rotating, retarder connection driving motor is passed through at the top of lead screw, driving motor fixes on spacing post be equipped with the scale on the spacing post, be provided with on the lead screw rather than complex screw, the screw is equipped with the pointer of directional scale a little, and the probe is connected to the other end, it is protruding that the probe lower part becomes the arc, the protruding inside through-hole that runs through the probe center that is equipped with of arc, the through-hole is close to the protruding end of arc and is equipped with the limiting plate that corresponds with the arc arch, the through-hole is close to probe center end and is equipped with the fixed plate, is equipped with the ball post between limiting plate, fixed plate, the ball post passes through reset spring and connects the fixed plate the column end and the probe center of.

As a further improvement of the invention, the lower part of the base is provided with a travelling wheel.

As a further improvement of the invention, a conical head is arranged at the bottom end of the probe.

As a further improvement of the invention, the ball end of the ball column is contacted with the limit plate, the column end of the ball column is connected with the fixed plate through the return spring, and the column end of the ball column penetrates through the fixed plate and is in sliding contact with the fixed plate.

As a further improvement of the invention, the sensor is connected with the driving motor through a controller.

As a further improvement of the invention, the ball stud protrudes out of an arc-shaped bulge.

Compared with the prior art, the invention has the beneficial effects that: under driving motor's effect, when the lead screw rotates, the screw takes place upper and lower position along the lead screw, the protruding contact sclerosis ground of arc, the interior ball post of arc is outside pressure effect down to the through-hole internal motion, the toe cap of ball post and the sensor at probe center contact each other, transmission signal to controller, control driving motor stop work, can pass through scale and pointer, the displacement volume of accurate observation screw, probe bottom to ball post axis distance is subtracted to holistic displacement volume, be exactly the loose thickness, the measured data accuracy is accurate, high efficiency, be difficult to receive external factor's influence.

Drawings

The invention is further described with reference to the accompanying drawings in which:

FIG. 1 is a schematic structural view of a bituminous pavement loose thickness tester of the present invention;

FIG. 2 is a schematic view of the structure of the probe tip of the present invention;

in the figure: the device comprises a base 1, a walking wheel 2, a bearing 3, a limiting column 4, a graduated scale 5, a pointer 6, a screw nut 7, a speed reducer 8, a driving motor 9, a lead screw 10, a probe 11, a conical head 12, an arc-shaped bulge 13, a through hole 14, a limiting plate 15, a fixing plate 16, a ball column 17, a sensor 18 and a return spring 19.

Detailed Description

In order to make the technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following specific embodiments.

FIG. 1 is a schematic structural view of a bituminous pavement loose thickness tester of the present invention; install lead screw 10 on base 1 including rotating, 8 connection driving motor 9 are passed through at the top of lead screw 10, driving motor 9 is fixed on spacing post 4 be equipped with scale 5 on the spacing post 4, be provided with on the lead screw 10 rather than complex screw 7, screw 7 is equipped with pointer 6 of directional scale 5 a bit, other

end joint probe

11, 11 lower parts of probe become arc arch 13 11 bottom of probe is equipped with conical head 12, 1 lower part of base is provided with walking wheel 2.

Fig. 2 is a schematic structural diagram of an end portion of a probe according to the present invention, an arc-shaped protrusion 13 is formed at a lower portion of the probe 11, a through hole 14 penetrating through a center of the probe is formed in the arc-shaped protrusion 13, a position limiting plate 15 corresponding to the arc-shaped protrusion 13 is arranged at an end of the through hole 14 close to the arc-shaped protrusion 13, a fixing plate 16 is arranged at the end of the through hole 14 close to the center of the probe 11, a ball stud 17 is arranged between the position limiting plate 15 and the fixing plate 16, the ball stud 17 is connected to the fixing plate 16 through a return spring 19, a sensor 18 is arranged at a stud end of the ball stud 17 and the center of the probe 11, the sensor 18 is.

In the invention, the top of a screw 10 is connected with a driving motor 9 through a reducer 8, the driving motor 9 is fixed on a limit column 4, a graduated scale 5 is arranged on the limit column 4, a nut 7 matched with the screw 10 is arranged on the screw 10, a pointer 6 pointing to the graduated scale 5 is arranged at one point of the nut 7, a probe 11 is connected at the other end of the nut, under the action of the driving motor 9, when the screw 10 rotates, the nut 7 is vertically positioned along the screw 10, the displacement of the nut 7 can be accurately observed through the graduated scale 5 and the pointer 6, before an asphalt pavement is compacted, an asphalt mixture is paved by a paver, the foundation is a hardened foundation, an arc-shaped bulge 13 is formed at the lower part of the probe 11, after the soil of a cone head 12 is broken, the arc-shaped bulge 13 contacts the hardened foundation, and a ball column 17 in the arc-shaped bulge 13 moves towards a through hole 14 under the action of external, ball 17's bulb contacts with limiting plate 15, ball 17's column end passes through reset spring 19 and fixed plate 16, and ball 17's column end runs through fixed plate 16 to with fixed plate 16 sliding contact, ball 17's column end and the sensor 18 at probe 11 center contact each other, transmission signal to controller, control driving motor 10 stop work, the measurement is finished, ball 17 restores the normal position under reset spring 19's effect, probe 11 bottom to ball 17 axis distance is subtracted to holistic displacement volume, be the loose thickness, measured data accuracy is accurate, and is efficient, is difficult to receive external factor's influence.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; 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 meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only, since various other embodiments will become apparent to those skilled in the art upon reference to the following detailed description.

Claims

1. The utility model provides an asphalt pavement loose thickness apparatus which characterized in that: install lead screw (10) on base (1) including rotating, driving motor (9) are connected through reduction gear (8) at the top of lead screw (10), driving motor (9) are fixed on spacing post (4) be equipped with scale (5) on spacing post (4), be provided with on lead screw (10) rather than complex screw (7), screw (7) are equipped with pointer (6) of directional scale (5) a bit, and probe (11) are connected to the other end, probe (11) lower part becomes arc arch (13), arc arch (13) inside is equipped with through-hole (14) that run through the probe center, through-hole (14) are close to arc arch (13) end and are equipped with limiting plate (15) that correspond with arc arch (13), through-hole (14) are close to probe (11) center and hold and are equipped with fixed plate (16), at limiting plate (15), Be equipped with between fixed plate (16) ball post (17), ball post (17) are connected fixed plate (16) through reset spring (19), be equipped with sensor (18) in the toe of ball post (17) and probe (11) center.

2. The asphalt pavement loose thickness tester according to claim 1, characterized in that: and a travelling wheel (2) is arranged at the lower part of the base (1).

3. The asphalt pavement loose thickness tester according to claim 1, characterized in that: the bottom end of the probe (11) is provided with a conical head (12).

4. The asphalt pavement loose thickness tester according to claim 1, characterized in that: the ball end of ball post (17) contacts with limiting plate (15), the column end of ball post (17) passes through reset spring (19) and fixed plate (16), and the column end of ball post (17) runs through fixed plate (16) to with fixed plate (16) sliding contact.

5. The asphalt pavement loose thickness tester according to claim 1, characterized in that: the sensor (18) is connected with the driving motor (9) through a controller.

6. The asphalt pavement loose thickness tester according to claim 1, characterized in that: the ball column (17) protrudes out of the arc-shaped bulge (13).