CN218297882U

CN218297882U - High-temperature track test device for asphalt pavement

Info

Publication number: CN218297882U
Application number: CN202222124344.6U
Authority: CN
Inventors: 高磊; 殷力立; 郑君礼; 秦鹏涛; 盛小勇; 张荣春; 吴净净; 王占红; 刘生波; 程健; 周泉; 张磊; 杜笑天; 程小刚; 谭二毛
Original assignee: CCCC SHEC Fourth Engineering Co Ltd
Current assignee: CCCC SHEC Fourth Engineering Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2023-01-13
Anticipated expiration: 2032-08-12

Abstract

The utility model discloses a bituminous paving's high temperature rut test device, the power distribution box comprises a box body, place the platform is installed to the interior bottom of box, heating pipe starts in through two sets of mount pads, heat up the box inside as required, two sets of second electric hydraulic stem piston rods drive concave type mount decline in passing through drive assembly in flexible, make the wheel of testing in the test assembly push down bituminous paving sample, pressure sensor monitors the holding down force of testing wheel, simulate the influence that the vehicle of different loads produced bituminous paving sample rut, it rotates to drive the threaded rod and rotate to rotate through drive motor output shaft among the drive assembly, threaded connection's sliding plate removes on the threaded rod drives its outer wall, two sets of first gag lever post cooperations are spacing to the sliding plate, make the sliding plate can only horizontal linear movement, and then make the test wheel roll on bituminous paving sample surface among the test assembly, carry out the rut test under different temperatures to bituminous paving sample.

Description

High-temperature track test device for asphalt pavement

Technical Field

The utility model relates to a rut test technical field specifically is a bituminous paving's high temperature rut test device.

Background

Along with the large-scale construction of highways in China, the service performance of asphalt pavements is more and more emphasized, the functional design of the asphalt pavements mainly aims at the structural function and the service function, the structural function such as rutting resistance, fatigue resistance and the like are mainly generated in the permanent deformation of the asphalt mixture at high temperature, the rutting test is a simple and easy method for evaluating the high-mix deformation of the asphalt mixture, and the rutting test is put into the standard specification in China at present.

The existing rut test has complex operation flow and low efficiency, only can be used for testing at a fixed temperature, cannot simulate the real condition of the damage of the asphalt pavement at a high temperature, and the data obtained by the rut test cannot truly feed back the road condition, so that a high-temperature rut test device for the asphalt pavement is required to be provided.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a bituminous paving's high temperature rut test device, through setting up the heating pipe in box inner wall both sides, through the impaired true condition in heating pipe simulation bituminous paving road surface under the high temperature, through drive assembly and test assembly cooperation, the bituminous paving sample after fixing carries out the rut experiment to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a high-temperature rutting test device for an asphalt pavement comprises a box body, wherein a placing platform is installed at the inner bottom of the box body, a sample mold is placed at the upper end of the placing platform, an asphalt pavement sample is arranged inside the sample mold, clamping assemblies are arranged at two ends, located at the sample mold, of the placing platform, a driving assembly is arranged at the inner top of the box body, a sliding plate is connected onto the driving assembly in a sliding mode, and a test assembly is connected to the bottom of the sliding plate;

the testing component comprises a connecting plate, the top of the connecting plate is fixedly connected with the bottom of a sliding plate, a concave mounting frame is arranged at the bottom of the connecting plate, a testing wheel is installed inside the concave mounting frame in a rotating mode through a bearing, the bottom of the testing wheel is abutted to the surface of an asphalt pavement sample, a pressure sensor is fixedly installed at the top of the concave mounting frame in the middle, two sets of second limiting rods are symmetrically and fixedly connected with the two sides of the concave mounting frame, the two sets of second limiting rods are arranged on the two sides of the pressure sensor in a penetrating mode, the upper ends of the second limiting rods penetrate through the upper end of the connecting plate and located on the connecting plate, compression springs are sleeved on the outer wall of each second limiting rod, two sets of mounting seats are symmetrically installed on the two sides of the inner wall of the box body, heating pipes are installed inside the mounting seats, and the box body is located above one set of the mounting seats and fixedly installed with the temperature sensor.

Preferably, the centre gripping subassembly includes L type fixing base, the upper end fixed mounting of L type fixing base diaphragm has first electronic hydraulic stem, L type fixing base riser and fixedly connected with grip block are run through to the one end of first electronic hydraulic stem piston rod, the one side of grip block and the laminating of the one end tip of sample mould.

Preferably, the driving assembly comprises two sets of second electric hydraulic rods which are symmetrically and fixedly installed at the top in the box body, the two sets of second electric hydraulic rods are fixedly connected with concave fixing frames at one ends of piston rods of the second electric hydraulic rods, threaded rods are installed inside the concave fixing frames in a rotating mode through bearings, one ends of the threaded rods are connected with driving motors, and the sliding plate is installed on the outer wall of the threaded rods in a threaded mode.

Preferably, the driving motor is fixedly installed at one end of the concave fixing frame through a bracket, and one end of an output shaft of the driving motor is fixedly connected with one end of the threaded rod.

Preferably, the sliding plates are symmetrically and slidably connected with two groups of first limiting rods on two sides of the threaded rod, and two ends of each first limiting rod are fixedly connected with the inner walls of two sides of the concave fixing frame respectively.

Preferably, the sliding plate is provided with a threaded through hole matched with the thread on the outer wall of the threaded rod, and through holes for the two groups of first limiting rods to respectively penetrate are formed in the two sides of the sliding plate, which are located on the threaded through hole.

Preferably, a control panel is fixedly mounted on one side of the outer wall of the box body, and the control panel is electrically connected with the first electric hydraulic rod, the second electric hydraulic rod, the driving motor, the pressure sensor, the heating pipe and the temperature sensor through wires.

Preferably, the first electric hydraulic rod and the second electric hydraulic rod are both set to be stepping electric hydraulic rods, and the driving motor is set to be a forward and reverse stepping motor.

Preferably, the inner bottom of the box body is symmetrically and fixedly provided with two groups of supporting columns, and the upper ends of the two groups of supporting columns are fixedly connected with the bottom of the placing platform.

Preferably, the outer wall of the second limiting rod is connected with the connecting plate in a sliding mode, the upper end of the compression spring is fixedly connected with the connecting plate, and the bottom of the compression spring is fixedly connected with the top of the concave mounting frame.

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

the utility model discloses a place the sample mould on the place the platform surface, first electronic hydraulic stem piston rod is flexible to drive the grip block and fix the sample mould in through two sets of centre gripping subassemblies, place the bituminous paving sample of looks adaptation in the sample mould according to the size of sample mould inner chamber, heating pipe starts in through two sets of mount pads, heat up to box inside as required, two sets of second electronic hydraulic stem piston rods are flexible to drive concave type mount and descend in through drive assembly, make the test wheel push down bituminous pavement sample in the test subassembly, pressure sensor monitors the pushing down force of test wheel, can pass through the cooperation of two sets of second electronic hydraulic stems, push down bituminous pavement sample to the test wheel and exert different pressure, the influence that the vehicle of simulation different loads the rut produces to bituminous pavement sample, drive motor output shaft rotates and drives the threaded rod rotation in the drive assembly, the sliding plate that drives threaded connection on its outer wall moves, two sets of first spacing pole cooperation carry out spacingly to the sliding plate, make the sliding plate can only horizontal linear motion of sliding plate, and then make the test wheel roll on bituminous pavement surface sample, carry out rut sample under the fixed degree of high temperature can's the real road surface test data that can only improve the real test under the low temperature test road surface.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic structural diagram of the driving assembly of the present invention;

FIG. 3 is a schematic view of the testing assembly of the present invention;

fig. 4 is a schematic view of the axial structure of the sliding plate of the present invention.

In the figure: 1. a box body; 2. placing a platform; 3. a sample mold; 4. an asphalt pavement sample; 5. an L-shaped fixed seat; 6. a first electro-hydraulic lever; 7. a clamping plate; 8. a second electro-hydraulic ram; 9. a concave fixing frame; 10. a threaded rod; 11. a drive motor; 12. a sliding plate; 13. a first limit rod; 14. a connecting plate; 15. a concave mounting rack; 16. testing the wheel; 17. a second limiting rod; 18. a compression spring; 19. a pressure sensor; 20. a mounting seat; 21. heating a tube; 22. a temperature sensor; 23. a control panel.

Detailed Description

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 fig. 1-4, the present invention provides a technical solution:

a high-temperature rut test device for an asphalt pavement comprises a box body 1, a placing platform 2 is installed at the inner bottom of the box body 1, two groups of supporting columns are symmetrically and fixedly installed at the inner bottom of the box body 1, the upper ends of the two groups of supporting columns are fixedly connected with the bottom of the placing platform 2, a sample mold 3 is placed at the upper end of the placing platform 2, an asphalt pavement sample 4 is arranged inside the sample mold 3, clamping assemblies are arranged at two ends, located at the sample mold 3, of the placing platform 2, the clamping assemblies comprise L-shaped fixing seats 5,L, first electric hydraulic rods 6 are fixedly installed at the upper ends of transverse plates of the L-shaped fixing seats 5, one ends of piston rods of the first electric hydraulic rods 6 penetrate through the vertical plates of the L-shaped fixing seats 5 and are fixedly connected with clamping plates 7, and one side of each clamping plate 7 is attached to one end portion of the sample mold 3;

the inner top of the box body 1 is provided with a driving assembly, the driving assembly is connected with a sliding plate 12 in a sliding mode, the driving assembly comprises two groups of second electric hydraulic rods 8 which are symmetrically and fixedly installed at the inner top of the box body 1, the first electric hydraulic rod 6 and the second electric hydraulic rods 8 are both set to be stepping electric hydraulic rods, one ends of piston rods of the two groups of second electric hydraulic rods 8 are fixedly connected with a concave fixing frame 9, a threaded rod 10 is rotatably installed inside the concave fixing frame 9 through a bearing, one end of the threaded rod 10 is connected with a driving motor 11, the driving motor 11 is set to be a forward and reverse stepping motor, the driving motor 11 is fixedly installed at the end part of the concave fixing frame 9 through a support, and one end of an output shaft of the driving motor 11 is fixedly connected with one end of the threaded rod 10;

the sliding plate 12 is installed on the outer wall of the threaded rod 10 in a threaded manner, two groups of first limiting rods 13 are symmetrically and slidably connected to two sides of the sliding plate 12 on the threaded rod 10, two ends of each first limiting rod 13 are fixedly connected with inner walls of two sides of the concave fixing frame 9 respectively, a threaded through hole matched with the thread on the outer wall of the threaded rod 10 is formed in the sliding plate 12, through holes for the two groups of first limiting rods 13 to penetrate through are formed in two sides of the threaded through hole of the sliding plate 12 respectively, the sliding plate 12 is conveniently limited by matching of the two groups of first limiting rods 13, the sliding plate 12 can only transversely and linearly move, and a test component is connected to the bottom of the sliding plate 12;

the test assembly comprises a connecting plate 14, the top of the connecting plate 14 is fixedly connected with the bottom of the sliding plate 12, a concave mounting frame 15 is arranged at the bottom of the connecting plate 14, a test wheel 16 is rotatably mounted inside the concave mounting frame 15 through a bearing, the bottom of the test wheel 16 is abutted against the surface of the asphalt pavement sample 4, a pressure sensor 19 is fixedly mounted at the center of the top of the concave mounting frame 15, two groups of second limiting rods 17 are symmetrically and fixedly connected to two sides of the concave mounting frame 15, the upper ends of the two groups of second limiting rods 17 penetrate through the connecting plate 14 and are located at the upper end of the connecting plate 14, a compression spring 18 is sleeved on the outer wall of each second limiting rod 17, the outer wall of each second limiting rod 17 is in sliding connection with the connecting plate 14, the upper end of each compression spring 18 is fixedly connected with the connecting plate 14, the bottom of each compression spring 18 is fixedly connected with the top of the concave mounting frame 15, and when the test wheel 16 presses the asphalt pavement sample 4, the two groups of second limiting rods 17 are matched with the compression springs 18 to drive the concave mounting frame to move towards the connecting plate 14, so that the pressure sensor 19 is applied to the asphalt pavement sample 4 by the test wheel 16;

two sets of mount pads 20 are installed to the inner wall both sides of box 1 to the symmetry, and the internally mounted of mount pad 20 has heating pipe 21, and the box 1 is located the top fixed mounting of one of them set of mount pad 20 and has temperature sensor 22, and outer wall one side fixed mounting of box 1 has control panel 23, and control panel 23 passes through the wire respectively with first electronic hydraulic stem 6, second electronic hydraulic stem 8, driving motor 11, pressure sensor 19, heating pipe 21 and temperature sensor 22 electric connection.

The utility model discloses place 2 surfaces at place platform through with sample mould 3 during the use, 6 piston rods of first electronic hydraulic stem stretch out and draw back and drive grip block 7 and fix sample mould 3 in through two sets of centre gripping subassemblies, place the bituminous paving sample 4 of looks adaptation in sample mould 3 according to the size of sample mould 3 inner chamber, heating pipe 21 starts in 20 through two sets of mount pads, heat up 1 inside box as required, two sets of second electronic hydraulic stem 8 piston rods stretch out and draw back and drive concave type mount 9 and descend in passing through drive assembly, make experimental wheel 16 push down bituminous paving sample 4 in the experimental subassembly, pressure sensor 19 monitors the holding down force of experimental wheel 16, can be through two sets of second electronic hydraulic stem 8 cooperations, different pressures are applyed to experimental wheel 16 push down bituminous paving sample 4, simulate the influence that the vehicle of different load cars produced bituminous paving sample 4 ruts, it rotates to drive output shaft 10 through drive assembly 11 rotation, threaded connection's sliding plate 12 removes on the drive its outer wall 10 drives threaded connection, two sets of first gag lever 13 cooperations carry out limiting plate 12, and then make the linear movement can only make the sample 12 roll the experimental threaded rod and carry out the different ruts temperature test in bituminous paving sample 4 ruts rolling test threaded rod in the experimental subassembly.

The same reference numbers in different drawings identify the same or similar elements; it should be further understood that terms such as "first," "second," "third," "upper," "lower," "front," "rear," "inner," "outer," "end," "portion," "section," "width," "thickness," "zone," and the like, may be used solely for convenience in reference to the figures and to aid in describing the invention, and are not intended to limit the invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a bituminous paving's high temperature rut test device, includes box (1), its characterized in that: a placing platform (2) is installed at the inner bottom of the box body (1), a sample mold (3) is placed at the upper end of the placing platform (2), an asphalt pavement sample (4) is arranged inside the sample mold (3), clamping assemblies are arranged at two ends, located on the sample mold (3), of the placing platform (2), a driving assembly is arranged at the inner top of the box body (1), a sliding plate (12) is connected to the driving assembly in a sliding mode, and a testing assembly is connected to the bottom of the sliding plate (12);

the testing component comprises a connecting plate (14), the top of connecting plate (14) and the bottom fixed connection of sliding plate (12), the bottom of connecting plate (14) is provided with concave type mounting bracket (15), the inside of concave type mounting bracket (15) is rotated through the bearing and is installed test wheel (16), the bottom of test wheel (16) and the surperficial butt of bituminous paving sample (4), the top of concave type mounting bracket (15) is located fixed mounting centrally and is had pressure sensor (19), the both sides that concave type mounting bracket (15) are located pressure sensor (19) are two sets of second gag lever post (17), and are two sets of the upper end of second gag lever post (17) runs through the upper end that connecting plate (14) is located connecting plate (14), and is equipped with compression spring (18) on the outer wall of second gag lever post (17), the inner wall both sides of box (1) are the symmetry and install two sets of mount pads (20), the internally mounted of mount pad (20) has heating pipe (21), and box (1) is located the top fixed mounting of a set of wherein mount pad (20) and has temperature sensor (22).

2. The high-temperature rutting test device for the asphalt pavement according to claim 1, characterized in that: the centre gripping subassembly includes L type fixing base (5), the upper end fixed mounting of L type fixing base (5) diaphragm has first electronic hydraulic stem (6), the one end of first electronic hydraulic stem (6) piston rod runs through L type fixing base (5) riser and fixedly connected with grip block (7), the one side of grip block (7) and the one end tip laminating of sample mould (3).

3. The high-temperature rutting test device for the asphalt pavement according to claim 2, wherein: drive assembly includes that two sets of second electric hydraulic rod (8) that are symmetry fixed mounting in box (1) top, and are two sets of the concave type mount (9) of one end fixedly connected with of second electric hydraulic rod (8) piston rod, threaded rod (10) are installed through the bearing rotation in the inside of concave type mount (9), and the one end of threaded rod (10) is connected with driving motor (11), sliding plate (12) threaded mounting is on the outer wall of threaded rod (10).

4. The high-temperature rutting test device for asphalt pavement according to claim 3, wherein: the driving motor (11) is fixedly arranged at one end part of the concave fixing frame (9) through a support, and one end of an output shaft of the driving motor (11) is fixedly connected with one end of the threaded rod (10).

5. The high-temperature rutting test device for asphalt pavement according to claim 4, wherein: the sliding plate (12) is symmetrically and slidably connected with two groups of first limiting rods (13) on two sides of the threaded rod (10), and two ends of each first limiting rod (13) are fixedly connected with the inner walls of two sides of the concave fixing frame (9) respectively.

6. The high-temperature rutting test device for asphalt pavement according to claim 5, wherein: the sliding plate (12) is provided with a thread through hole matched with the thread on the outer wall of the threaded rod (10), and through holes for the two groups of first limiting rods (13) to respectively penetrate are formed in the two sides of the sliding plate (12) located in the thread through hole.

7. The high-temperature rutting test device for the asphalt pavement according to claim 6, wherein: the hydraulic control box is characterized in that a control panel (23) is fixedly mounted on one side of the outer wall of the box body (1), and the control panel (23) is electrically connected with the first electric hydraulic rod (6), the second electric hydraulic rod (8), the driving motor (11), the pressure sensor (19), the heating pipe (21) and the temperature sensor (22) through wires.

8. The high-temperature rutting test device for asphalt pavement according to claim 7, wherein: the first electric hydraulic rod (6) and the second electric hydraulic rod (8) are both set to be stepping electric hydraulic rods, and the driving motor (11) is set to be a forward and reverse stepping motor.

9. The high-temperature rutting test device for the asphalt pavement according to claim 1, wherein: the inner bottom of the box body (1) is symmetrically and fixedly provided with two groups of supporting columns, and the upper ends of the supporting columns are fixedly connected with the bottom of the placing platform (2).

10. The high-temperature rutting test device for the asphalt pavement according to claim 1, characterized in that: the outer wall of the second limiting rod (17) is connected with the connecting plate (14) in a sliding mode, the upper end of the compression spring (18) is fixedly connected with the connecting plate (14), and the bottom of the compression spring (18) is fixedly connected with the top of the concave mounting frame (15).