CN218466278U

CN218466278U - Roadbed leveling instrument

Info

Publication number: CN218466278U
Application number: CN202222695465.6U
Authority: CN
Inventors: 郑铭
Original assignee: Hubei Changze Construction Engineering Co ltd
Current assignee: Hubei Changze Construction Engineering Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-02-10
Anticipated expiration: 2032-10-11

Abstract

The application relates to a road bed levelling instrument belongs to the road construction field, and its technical scheme main points include: ruler and follow ruler extending direction sliding connection in the perpendicular chi on the ruler, it has the measuring staff to erect along erecting ruler extending direction sliding connection on the chi, measuring staff tip butt in subaerial, this application is when using, places the ruler in subaerial, promotes to erect the chi and slides along the ruler, at the gliding in-process of perpendicular chi, the measuring staff tip can the butt go up and down in subaerial and along with the fluctuation on ground, can judge the position in maximum clearance and read the numerical value in maximum clearance for the position of erecting the chi through observing the measuring staff, and the simple operation measures accurately.

Description

Roadbed leveling instrument

Technical Field

The application relates to the field of road construction, in particular to a roadbed leveling instrument.

Background

The roadbed is a foundation of a track or a road surface and is a geotechnical structure formed by excavation or filling, the main function of the roadbed is to provide necessary conditions for track or road surface laying and train or vehicle operation, bear static load and dynamic load of the track and vehicles or the road surface and traffic load, and transmit and diffuse the load to the deep part of the foundation, and the roadbed flatness is an important index for reflecting the roadbed quality and directly influences the driving safety of the road after being used.

The method for measuring the road bed flatness generally adopts a three-meter ruler measurement method, and comprises the following steps: 1. after the testing direction is determined, three meters of straight ruler is arranged on the road surface of the testing place; 2. visually observing the gap between the bottom surface of the 3 m straight ruler and the road surface, and determining the maximum gap position; 3. and (3) inserting a feeler gauge into the gap to measure the height of the maximum gap, or measuring the depth of the top surface of the straight ruler from the ground at the position of the maximum gap by using a depth gauge, and subtracting the height of the gauge from the depth to obtain the maximum gap height of the test point, wherein the maximum gap height is accurate to 0.2mm.

For the related art among the above: firstly, the maximum gap position between the ruler and the ground is judged in a visual inspection mode, and the subjectivity is too strong, so that the accuracy of a measuring result is influenced.

SUMMERY OF THE UTILITY MODEL

In order to improve the problem of judging the biggest clearance position between ruler and ground through the mode of range finding, this application provides a road bed levelling instrument, this application is when using, place the ruler subaerial, promote perpendicular chi and slide along the ruler, at the gliding in-process of perpendicular chi, the measuring staff tip can the butt in subaerial and along with the fluctuation on ground and go up and down, can judge the position in biggest clearance and read the numerical value in biggest clearance for the position of perpendicular chi through observing the measuring staff, the operation is convenient, it is accurate to measure.

The application provides a road bed levelling instrument adopts following technical scheme:

a subgrade level comprising: ruler and along ruler extending direction sliding connection in the perpendicular chi on the ruler, it has the graduated flask to erect along erecting chi extending direction sliding connection on the chi, graduated flask tip butt is subaerial.

Through adopting above-mentioned technical scheme, place the ruler in subaerial, promote to erect the chi and slide along the ruler, at the gliding in-process of perpendicular chi, the measuring staff tip can the butt in subaerial and along with the fluctuation on ground goes up and down, can judge the position in maximum clearance and read the numerical value in maximum clearance for the position of erecting the chi through observing the measuring staff, not only the simple operation does not receive the influence of staff's subjective judgement moreover, measures accurately.

The application further sets up: the end part of the measuring rod is in threaded connection with a measuring head.

Through adopting above-mentioned technical scheme, during the measurement, the measuring staff tip can rub with ground, and is easy impaired, through the setting of gauge head, only need change the gauge head, the cost is reduced.

The application further provides that: the last edge measuring staff extending direction sliding connection of measuring staff has locking pole, be equipped with the locking groove that is used for holding locking pole on the gauge outfit.

Through adopting above-mentioned technical scheme, because threaded connection between gauge head and the gauge rod, when the gauge head rubs with the ground, can produce radial force, lead to the gauge head pine to take off, influence measuring accuracy, through the setting in locking pole and anti-loosening groove, reduced the possibility that the gauge head pine takes off.

The application further sets up: and a spring is arranged between the anti-loosening rod and the measuring rod, and the spring enables the anti-loosening rod to generate a tendency of sliding towards the measuring head direction.

Through adopting above-mentioned technical scheme, under the effect of spring restoring force, locking pole supports tightly in the locking inslot, and locking pole is difficult for the pine to take off, fixes more firmly.

The application further sets up: the end part of the measuring head is spherical.

By adopting the technical scheme, the contact area between the measuring head and the ground is reduced, so that the friction force between the measuring head and the ground is reduced, on one hand, the measuring head slides more smoothly, and the operation is time-saving and labor-saving; on the other hand, the wear rate of the measuring head is slowed down, and the service life of the measuring head is prolonged.

The application further provides that: the ruler is characterized in that a supporting rod is arranged on one side of the ruler and is inserted into the ground, a pressing rod is connected onto the supporting rod in a sliding mode, the end portion of the pressing rod abuts against the ruler tightly, and a fixing assembly used for fixing the pressing rod is arranged on the supporting rod.

Through adopting above-mentioned technical scheme, place the ruler subaerial, when promoting the measuring staff and slide, the ruler probably rocks, influences measurement accuracy, supports the ruler tightly through the depression bar, has reduced the possibility that the ruler rocked, has promoted measurement accuracy.

The application further provides that: the fixed subassembly is including wearing to locate the screw rod on the branch, screw rod tip threaded connection has the nut, be equipped with the bar hole that supplies the screw rod to pass along the slip direction of depression bar on the branch, be equipped with the through-hole that supplies the screw rod to pass on the depression bar.

Through adopting above-mentioned technical scheme, promote the depression bar and slide until the depression bar supports tightly on the ruler, the rethread screw rod is fixed the depression bar with the nut, the simple operation, it is fixed firm.

The application further provides that: the end part of the pressure lever is provided with an elastic layer.

Through adopting above-mentioned technical scheme, when the depression bar supported tightly on the ruler, the elastic layer received the extrusion and warp to what make between depression bar and the ruler laminating inseparabler, it is fixed more firm.

In summary, the present application has the following beneficial effects:

1. promote to erect the chi and slide along the ruler, just can judge the position in maximum clearance and read the numerical value in maximum clearance according to the measuring staff for erecting the position of chi, not only the simple operation does not receive the influence of the subjective judgement of staff moreover, measures accurately.

2. In the measuring process, the ruler is compressed through the compression bar, the possibility of shaking of the ruler is reduced, and the measuring precision is improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

fig. 2 is a sectional view of the overall structure of the strut and the strut according to the embodiment of the present application.

Description of reference numerals:

1. a straightedge; 11. a strut; 12. a pressure lever; 13. a screw; 14. a nut; 15. a strip-shaped hole; 16. a through hole; 17. an elastic layer; 2. a vertical ruler; 3. a measuring rod; 31. measuring the head; 32. a locking bar; 33. an anti-loosening groove; 34. a spring; 41. a chute.

Detailed Description

The roadbed leveling instrument is further described in detail with reference to the attached drawings.

In this embodiment: a roadbed levelling instrument, referring to fig. 1 and 2, comprising: ruler 1 and along 1 extending direction sliding connection of ruler 1 on ruler 1 perpendicular chi 2, ruler 1 middle part is seted up and is supplied to erect the gliding spout 41 of chi 2, and perpendicular chi 2's extending direction is mutually perpendicular with ruler 1's extending direction, erects 2 last along erecting 2 extending direction sliding connection of chi have a measuring staff 3, and measuring staff 3 bottom passes and butt in subaerial in spout 41.

One side of the ruler 1 is provided with a support rod 11, the support rod 11 is inserted into the ground, the support rod 11 is vertically connected with a pressure rod 12 in a sliding mode, the bottom of the pressure rod 12 abuts against the ruler 1, and the support rod 11 is provided with a fixing assembly used for fixing the pressure rod 12.

During measurement, a point to be measured is selected, the ruler 1 is placed on the ground of the point to be measured, the pressing rod 12 is pushed to slide, the pressing rod 12 is abutted to the ruler 1, the pressing rod 12 is fixed through the fixing component, the ruler 1 is further fixed, the vertical ruler 2 is pushed to slide from one end of the ruler 1 to the other end, in the sliding process of the vertical ruler 2, the measuring rod 3 is abutted to the ground under the action of gravity of the measuring rod 3, the end of the measuring rod 3 is lifted along with the fluctuation of the ground, the position of the maximum gap can be judged and the numerical value of the maximum gap can be read by observing the position of the measuring rod 3 relative to the vertical ruler 2, the operation is convenient and fast, the influence of subjective judgment of workers is avoided, and the measurement is accurate.

The measuring staff 3 rubs on the ground for a long time, and is easily impaired, and then influences measurement accuracy, if change whole measuring staff 3, the cost is too high, consequently, in this embodiment, the bottom threaded connection of measuring staff 3 has measuring head 31, and when the measuring head 31 was impaired, only need change measuring head 31, the cost is lower.

It should be noted that the end of the measuring head 31 is spherical, so that the measuring head 31 can slide more smoothly, and the operation is time-saving and labor-saving; on the other hand, the wear rate of the measuring head 31 is slowed down, and the service life of the measuring head 31 is prolonged.

Through threaded connection between graduated flask 3 and the graduated flask 31, though the dismouting is convenient, however, when the graduated flask 31 slides along ground, easily receive radial force, lead to the graduated flask 31 to loosen, influence measurement accuracy, therefore, in this embodiment, 3 outsides of graduated flask have locking pole 32 along 3 extending direction sliding connection of graduated flask, offer the locking groove 33 that is used for holding locking pole 32 on the graduated flask 31, one side that locking pole 32 kept away from the graduated flask 31 and fixedly connected with spring 34 between the graduated flask 3, spring 34 makes locking pole 32 produce towards the gliding trend of graduated flask 31 direction.

Under the effect of spring 34 restoring force, locking pole 32 supports tightly in anti-loosening groove 33, plays limiting displacement to gauge head 31, has reduced the possibility that gauge head 31 pine takes off, has promoted measurement accuracy, during dismouting gauge head 31, with locking pole 32 from anti-loosening groove 33 in the cunning can, the dismouting is convenient.

Wherein, fixed subassembly includes that the level wears to locate the screw rod 13 on branch 11, and screw rod 13 tip threaded connection has nut 14, offers the bar hole 15 that supplies screw rod 13 to pass along the slip direction of depression bar 12 on branch 11, offers the through-hole 16 that supplies screw rod 13 to pass on the depression bar 12.

Firstly, the nut 14 is screwed out of the screw rod 13, then the pressing rod 12 is pushed to slide along the supporting rod 11, after the pressing rod 12 is moved to a preset position, the nut 14 is screwed into the screw rod 13 until the nut 14 abuts against one side of the supporting rod 11, a nut on the screw rod 13 abuts against the other side of the supporting rod 11, the pressing rod 12 is fixed, the ruler 1 is fixed, and the operation is convenient and fast to conduct and the fixation is firm.

It should be noted that the elastic layer 17 is bonded to the bottom of the pressing rod 12, and the elastic layer 17 is a rubber pad, so that the elastic layer 17 is extruded to deform when the pressing rod 12 abuts against the ruler 1, so that the pressing rod 12 and the ruler 1 are attached more tightly and fixed more firmly.

The implementation principle of this application embodiment road bed levelling instrument does: the method comprises the steps of selecting a point to be measured, placing a ruler 1 on the ground of the point to be measured, sliding a compression rod 12 to enable the compression rod 12 to abut against the top of the ruler 1, fixing the compression rod 12 through a screw 13 and a nut 14, further fixing the ruler 1, pushing a vertical ruler 2 to slide along the ruler 1, observing the position of a measuring rod 3 relative to the vertical ruler 2, further judging the position of the maximum gap and reading the numerical value of the maximum gap, being convenient to operate, accurate in measurement, sliding a locking rod 32 out of an anti-loosening groove 33 when an equivalent head 31 is damaged, and sliding the locking rod 32 into the anti-loosening groove 33 after replacing the measuring head 31.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A roadbed leveling instrument is characterized by comprising: ruler (1) and along ruler (1) extending direction sliding connection in perpendicular chi (2) on ruler (1), it has graduated flask (3) to erect chi (2) and go up along perpendicular chi (2) extending direction sliding connection, graduated flask (3) tip butt is subaerial.

2. A roadbed levelling instrument according to claim 1, wherein: the end part of the measuring rod (3) is in threaded connection with a measuring head (31).

3. A roadbed levelling instrument according to claim 2, wherein: measuring stick (3) are gone up and have locking pole (32) along measuring stick (3) extending direction sliding connection, be equipped with on gauge head (31) and be used for holding locking groove (33) of locking pole (32).

4. A roadbed levelling instrument according to claim 3, wherein: a spring (34) is arranged between the anti-loosening rod (32) and the measuring rod (3), and the spring (34) enables the anti-loosening rod (32) to generate a tendency of sliding towards the measuring head (31).

5. A roadbed levelling instrument according to claim 2, characterised in that: the end part of the measuring head (31) is spherical.

6. A roadbed levelling instrument according to claim 1, wherein: ruler (1) one side is equipped with branch (11), branch (11) are pegged graft in ground, sliding connection has depression bar (12) on branch (11), depression bar (12) tip supports tightly on ruler (1), be equipped with the fixed subassembly that is used for fixed depression bar (12) on branch (11).

7. A road bed levelling instrument according to claim 6, characterized in that: the fixed subassembly is including wearing to locate screw rod (13) on branch (11), screw rod (13) tip threaded connection has nut (14), be equipped with strip hole (15) that supply screw rod (13) to pass along the slip direction of depression bar (12) on branch (11), be equipped with through-hole (16) that supply screw rod (13) to pass on depression bar (12).

8. A road bed levelling instrument according to claim 6, characterized in that: an elastic layer (17) is arranged at the end part of the pressure lever (12).