CN209584795U

CN209584795U - A kind of subgrade and pavement rebound deflection instrument

Info

Publication number: CN209584795U
Application number: CN201822067302.7U
Authority: CN
Inventors: 蒋应军; 田甜; 王瑞祥; 李启龙
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2018-12-10
Filing date: 2018-12-10
Publication date: 2019-11-05
Anticipated expiration: 2028-12-10

Abstract

The utility model discloses a kind of subgrade and pavement rebound deflection instrument, it is the bottom plate of quadrangle including cross section, four edges of bottom base plate are respectively and fixedly provided with service brake universal wheel, two edges positioned at bottom plate the same side are vertically fixed column in symmetrical, the top of two columns is connected by horizontally disposed crossbeam, level is socketed with lever outside the middle part of crossbeam, the first fixed block is fixed at the top of lever one end above bottom plate, lever other end bottom is vertically fixed the second fixed block, an edge of the bottom plate far from column is vertically fixed Rotational Cylindrical, the top horizontal of Rotational Cylindrical is fixed with fixed link, fixation hole is offered in fixed link, dial gauge is plugged in fixation hole vertically.It is time saving and energy saving when mobile device in addition in four service brake universal wheels of the bottom of bottom plate fixed setting by the way that the bracket fixation of lever and dial gauge in the same plane, ensure that the accuracy of measurement result, greatly improve working efficiency.

Description

A kind of subgrade and pavement rebound deflection instrument

Technical field

The utility model belongs to pavement detection equipment technical field, and in particular to a kind of subgrade and pavement rebound deflection instrument.

Background technique

Roadbed is the basis on track or road surface, is the earthen structure by excavating or filling and formed, the master of roadbed Act on be for track or road surfacing and train or driving operation necessary condition is provided, and bear track and rolling stock or The dead load and dynamic load of person road surface and traffic loading, while load being transmitted and being spread to ground depths, what rebound deflection referred to It is that roadbed or road surface generate vertical deformation under specified load effect, that a part deformation that can restore after unloading, and road surface is returned Flexure amount is played, not only reflects the overall stiffness and intensity of road structure, but also there are one with the use state on road surface Fixed inner link.

Currently, benkelman beams deflectometer is mainly by preceding lever, rear lever, pedestal, the major parts such as dial gauge, bracket composition, its branch Frame is to be directly placed at ground directly to contact with ground, when using pavement benkelman beams deflectometer measurement road surface rebound deflection amount, is needed more People's cooperation is moved, time-consuming and laborious, influences the working efficiency of measurement, in addition measuring dial gauge is individually placed with lever , it cannot be guaranteed that the pedestal of the two is in same level, the accuracy of test result may be will affect.

Utility model content

The purpose of the utility model is to provide a kind of subgrade and pavement rebound deflection instrument, improve the measurement accuracy of benkelman beams deflectometer, And conveniently moving.

The utility model is the technical scheme adopted is that a kind of subgrade and pavement rebound deflection instrument, including cross section are four sides Four edges of the bottom plate of shape, bottom base plate are respectively and fixedly provided with service brake universal wheel, and two edges positioned at bottom plate the same side are in It symmetrically is vertically fixed column, the top of two columns is connected by horizontally disposed crossbeam, horizontal socket outside the middle part of crossbeam There is lever, lever one end is located above bottom plate, and the lever other end stretches out bottom plate, fixed at the top of lever one end above bottom plate There is the first fixed block, lever other end bottom is vertically fixed the second fixed block, and an edge of the bottom plate far from column is vertical It is fixed with Rotational Cylindrical, the top horizontal of Rotational Cylindrical is fixed with fixed link, and fixation hole is offered in fixed link, is inserted vertically in fixation hole It is connected to dial gauge, bottom plate is fixed with Universal level-metre at center.

The utility model is also characterized by

Rotational Cylindrical, including the fixed column being fixed on bottom plate vertically, fixed column top vertical is connected with column spinner, and rotates Column one end is protruded into fixed column, and the column spinner other end is fixedly connected with the bottom end of fixed link, and column spinner is connect with fixed column Place is set there are two bearing is sealed, and the end outer surface that inner ring and the column spinner of one of sealing bearing protrude into fixed column is fixed to be connected It connects, the inner ring of another sealing bearing is fixedly connected with the outer surface for the column spinner being located at the top of fixed column.

The surface of column spinner between two sealing bearings offers limit hole, and the surface screw thread of fixed column is plugged with Caging bolt, and caging bolt is matched with limit hole.

Fixed link side is threaded with fixing bolt, and fixing bolt one end is inserted into fixation hole, and is located in mounting hole The end of the fixing bolt in portion is fixed with arc fixture block, and the junction of arc fixture block and fixing bolt is fixed with second axis of rolling It holds, the inner ring of the second rolling bearing is fixedly connected with the outer surface of fixing bolt.

Arc fixture block is bonded with rubber pad far from one end of fixing bolt, and the outer surface of rubber pad and dial gauge table bar is tight Closely connected conjunction.

Three adjustable columns are further fixed on bottom plate, three adjustable columns are connected through a screw thread with bottom plate, and three adjustable columns are in three Triangular arrangement, and three adjustable columns both pass through bottom base plate, two of them adjustable column be located at two columns and Universal level-metre it Between, another adjustable column is close to fixed column.

The junction of lever and crossbeam is fixed with the first rolling bearing, the inner ring of the first rolling bearing and the outer surface of crossbeam It is fixedly connected.

Lever one end bottom above bottom plate is fixed with link, is further fixed on hook by wirerope on bottom plate, hook with Link matches.

The utility model has the beneficial effects that

By setting bottom plate, Rotational Cylindrical and column, lever is fixed on the crossbeam between column, dial gauge is fixed on It is in fixed link at the top of Rotational Cylindrical, the bracket of lever and dial gauge is fixed in the same plane, guarantee the lever in measurement It is identical with the datum plane of dial gauge, guarantee the accuracy of measurement result, four service brakes in addition are fixedly installed in the bottom of bottom plate Universal wheel does not need more people's cooperations and moves when needing mobile device, time saving and energy saving, greatly improves work Efficiency.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of subgrade and pavement rebound deflection instrument of the utility model；

Fig. 2 is a kind of side view of subgrade and pavement rebound deflection instrument middle link of the utility model；

Fig. 3 is the top cross-sectional view of fixing bolt in a kind of subgrade and pavement rebound deflection instrument of the utility model；

Fig. 4 is the lateral sectional view of fixed column in a kind of subgrade and pavement rebound deflection instrument of the utility model.

In figure, 1. bottom plates, 2. levers, 3. columns, 4. crossbeams, 5. first fixed blocks, 6. second fixed blocks, 7. service brakes are universal Wheel, 8. Universal level-metres, 9. adjustable columns, 10. fixed links, 11. fixation holes, 12. dial gauges, 13. fixing bolts, 14. links, 15. hook, 16. column spinners, 17. fixed columns, 18. sealing bearings, 19. limit holes, 20. caging bolts, 21. arc fixture blocks.

Specific embodiment

The utility model is described in detail with reference to the accompanying drawings and detailed description.

A kind of subgrade and pavement rebound deflection instrument of the utility model, as shown in Figure 1, include the bottom plate 1 that cross section is quadrangle, Four edges of 1 bottom of bottom plate are respectively and fixedly provided with service brake universal wheel 7, and two edges positioned at 1 the same side of bottom plate are in symmetrical perpendicular It is directly fixed with column 3, the top of two columns 3 is connected by horizontally disposed crossbeam 4, and level is socketed with outside the middle part of crossbeam 4 Lever 2,2 one end of lever are located at 1 top of bottom plate, and 2 other end of lever stretches out bottom plate 1, and lever 2 and the junction of crossbeam 4 are fixed with The inner ring of first rolling bearing, the first rolling bearing is fixedly connected with the outer surface of crossbeam 4, the lever 2 one above bottom plate 1 End top is fixed with the first fixed block 5, and 2 one end bottom of lever above bottom plate 1 is fixed with link 14, as shown in Fig. 2, bottom Hook 15 is further fixed on by wirerope on plate 1, hook 15 is hung on link 14, and 2 other end bottom of lever is vertically fixed the Two fixed blocks 6；

An edge of the bottom plate 1 far from column 3 is vertically fixed Rotational Cylindrical, and the top horizontal of Rotational Cylindrical is fixed with fixation Bar 10 offers fixation hole 11 in fixed link 10, is plugged with dial gauge 12 in fixation hole 11 vertically, and 10 side screw thread of fixed link connects It is connected to fixing bolt 13,13 one end of fixing bolt is inserted into fixation hole 11, and the fixing bolt 13 inside fixation hole 11 End is fixed with arc fixture block 21, as shown in figure 3, the junction of arc fixture block 21 and fixing bolt 13 is fixed with the second rolling The inner ring of bearing, the second rolling bearing is fixedly connected with the outer surface of fixing bolt 13, and arc fixture block 21 is far from fixing bolt 13 One end be bonded with rubber pad, and the outer surface of rubber pad and 12 table bar of dial gauge fits closely, after dial gauge 12 is put well, It is by rotary fixing screw bolt 13 that arc fixture block 21 is mobile to 12 direction of dial gauge, the table bar cramp of dial gauge 12 is tight, rubber is set When rubber mat can guarantee that the table bar of arc fixture block 21 and dial gauge 12 contacts, the table bar of dial gauge 12 will not be damaged；

Rotational Cylindrical, including the fixed column 17 being fixed on bottom plate 1 vertically, 17 top vertical of fixed column is provided with column spinner 16, and 16 one end of column spinner is protruded into fixed column 17,16 other end of column spinner is fixedly connected with the bottom end of fixed link 10, rotation Rotary column 16 and 17 junction of fixed column are set there are two bearing 18 is sealed, and the inner ring of one of sealing bearing 18 is stretched with column spinner 16 The end outer surface for entering fixed column 17 is fixedly connected, the inner ring of another sealing bearing 18 and the rotation for being located at 17 top of fixed column The outer surface of column 16 is fixedly connected, wherein the surface of the column spinner 16 between two sealing bearings 18 offers limit hole 19, the surface screw thread of fixed column 17 is plugged with caging bolt 20, and caging bolt 20 is matched with limit hole 19, by dial gauge After 12 installations, dial gauge 12 is moved to the top of the first fixed block 5 by rotating fixing rod 10, at this moment the limit on column spinner 16 Hole 19 can be aligned with caging bolt 20, and it is right in the end reeve limit hole 19 for make caging bolt 20 then to screw caging bolt 20 Column spinner 16 is fixed, and guarantees that column spinner 16 not can rotate in measurement；

Be fixed with Universal level-metre 8 at 1 center of bottom plate, be further fixed on three adjustable columns 9 on bottom plate 1, three adjustable columns 9 with Bottom plate 1 is connected through a screw thread, and three adjustable columns 9 are triangularly arranged, and three adjustable columns 9 both pass through 1 bottom of bottom plate, wherein two Between two columns 3 and Universal level-metre 8, another adjustable column 9 is adjusted three close to fixed column 17 a adjustable column 9 Column 9 is triangularly arranged on bottom plate 1, can guarantee the stability of bottom plate 1 to greatest extent, guarantees the whole device in measurement It can stablize motionless, guarantee the stability of measurement result；

The model JYF15-6010 of Universal level-metre 8.

A kind of subgrade and pavement rebound deflection instrument of the utility model, concrete operating principle is:

When work, entire benkelman beams deflectometer is first moved to suitable position installation and is fixed, followed by the four of 1 bottom of bottom plate A service brake universal wheel 7 adjusts the position of the device, steps on the service brake of service brake universal wheel 7 after adjusting, makes the second fixed block 6 It is aligned in the gap of two tires of benkelman beams deflectometer measurement back wheels of vehicle, and guarantees that lever 2 with tire interface, does not at this moment observe bottom plate again The Universal level-metre 8 in 1 center after regulating, will link up with 15 from link by the levelness of three 9 regulating base boards 1 of adjustable column It is removed on 14, and allows the second fixed block 6 slowly decline and ground face contact, then dial gauge 12 is inserted into fixation hole 11, and is revolved Turning fixing bolt 13 keeps arc fixture block 21 mobile to 12 direction of dial gauge, and the table bar cramp of dial gauge 12 is tight, in arc fixture block 21 The side setting rubber pad being in contact with dial gauge 12, it is ensured that when the table bar of arc fixture block 21 and dial gauge 12 contacts, no The table bar of dial gauge 12 can be damaged, at this moment rotates the top that column spinner 16 makes the table point of dial gauge 12 be directed at the first fixed block 5 again, And the tip contact with the first fixed block 5, at this moment the limit hole 19 on column spinner 16 can be aligned with caging bolt 20, then will limit Position bolt 20 screws, and injects the end of caging bolt 20 in limit hole 19 and column spinner 16 is fixed, guarantee in measurement Column spinner 16 not can rotate, and then dial gauge 12 is zeroed, and starts benkelman beams deflectometer measurement vehicle, measures, this kind of subgrade and pavement returns Benkelman beams deflectometer is played, the bracket of lever 2 and dial gauge 12 is fixed in the same plane, guarantee lever 2 and dial gauge in measurement 12 datum plane is identical, guarantees the accuracy of measurement result, and four service brake universal wheels in addition are fixedly installed in the bottom of bottom plate 1 7, when needing mobile device, does not need more people's cooperations and move, it is time saving and energy saving, greatly improve working efficiency.

Claims

1. a kind of subgrade and pavement rebound deflection instrument, which is characterized in that be the bottom plate (1) of quadrangle, the bottom plate including cross section (1) four edges of bottom are respectively and fixedly provided with service brake universal wheel (7), and two edges for being located at the bottom plate (1) the same side are in It is symmetrically vertically fixed column (3), the top of two columns (3) is connected by horizontally disposed crossbeam (4), the crossbeam (4) level is socketed with lever (2) outside middle part, and described lever (2) one end is located above bottom plate (1), lever (2) other end It stretches out bottom plate (1), is located at the top of lever (2) one end above the bottom plate (1) and is fixed with the first fixed block (5), the lever (2) other end bottom is vertically fixed the second fixed block (6), and an edge of the bottom plate (1) far from column (3) is solid vertically Surely there is Rotational Cylindrical, the top horizontal of Rotational Cylindrical is fixed with fixed link (10), is offered in fixed link (10) fixation hole (11), fixed It is plugged with vertically in hole (11) dial gauge (12), is fixed with Universal level-metre (8) at bottom plate (1) center.

2. a kind of subgrade and pavement rebound deflection instrument according to claim 1, which is characterized in that the Rotational Cylindrical, including it is perpendicular The fixed column (17) being directly fixed on bottom plate (1), fixed column (17) top vertical is connected with column spinner (16), and the rotation Rotary column (16) one end is protruded into fixed column (17), and the bottom end of column spinner (16) other end and fixed link (10) is fixed to be connected It connects, the column spinner (16) and fixed column (17) junction are set there are two sealing bearing (18), one of them described sealing bearing (18) inner ring is fixedly connected with the end outer surface that column spinner (16) protrudes into fixed column (17), another described sealing bearing (18) inner ring is fixedly connected with the outer surface for the column spinner (16) being located at the top of fixed column (17).

3. a kind of subgrade and pavement rebound deflection instrument according to claim 2, which is characterized in that be located at two sealing axis The surface for holding the column spinner (16) between (18) offers limit hole (19), and the surface screw thread grafting of the fixed column (17) is limited Position bolt (20), and the caging bolt (20) is matched with limit hole (19).

4. a kind of subgrade and pavement rebound deflection instrument according to claim 1, which is characterized in that fixed link (10) side It is threaded with fixing bolt (13), in fixing bolt (13) one end insertion fixation hole (11), and is located at the fixation hole (11) end of internal fixing bolt (13) is fixed with arc fixture block (21), the arc fixture block (21) and fixing bolt (13) Junction be fixed with the second rolling bearing, the inner ring of the second rolling bearing and outer surface of fixing bolt (13) is fixed connects It connects.

5. a kind of subgrade and pavement rebound deflection instrument according to claim 4, which is characterized in that the arc fixture block (21) is remote One end from fixing bolt (13) is bonded with rubber pad, and the outer surface of the rubber pad and the dial gauge (12) table bar is close Fitting.

6. a kind of subgrade and pavement rebound deflection instrument according to claim 1, which is characterized in that also solid on the bottom plate (1) There are three fixed adjustable column (9), three adjustable columns (9) are connected through a screw thread with bottom plate (1), and three adjustable columns (9) are in Rounded projections arranged, and three adjustable columns (9) both pass through bottom plate (1) bottom, adjustable column (9) described in two of them is located at two Between column (3) and Universal level-metre (8), another described adjustable column (9) is close to fixed column (17).

7. a kind of subgrade and pavement rebound deflection instrument according to claim 1, which is characterized in that the lever (2) and crossbeam (4) junction is fixed with the first rolling bearing, and the outer surface of the inner ring and the crossbeam (4) of first rolling bearing is fixed Connection.

8. a kind of subgrade and pavement rebound deflection instrument according to claim 1, which is characterized in that be located on the bottom plate (1) Lever (2) one end bottom of side is fixed with link (14), is further fixed on hook (15), institute by wirerope on the bottom plate (1) Hook (15) is stated to match with link (14).