CN213335887U

CN213335887U - Pavement crack width tester

Info

Publication number: CN213335887U
Application number: CN202022788967.4U
Authority: CN
Inventors: 琚兵; 梁家健; 唐小飞
Original assignee: Anqing Panshi Geotechnical Co ltd
Current assignee: Anqing Panshi Geotechnical Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-01
Anticipated expiration: 2030-11-25

Abstract

The application relates to the technical field of crack measuring tools, in particular to a pavement crack width tester, which comprises a square annular bottom frame, wherein two supporting pieces are arranged on the upper surface of the bottom frame, the end parts of the two supporting pieces are fixedly connected with a top plate together, a first supporting rod is fixedly connected to the lower surface of the top plate, a first clamping rod is fixedly connected to the end surface, far away from the top plate, of the first supporting rod, a sliding groove is formed in the top plate, a sliding block is connected to the sliding groove in a sliding manner, a second supporting rod is fixedly connected to the lower surface of the sliding block, and a second clamping rod is fixedly connected to the end surface; the first support rod is fixedly connected with a caliper, scale marks are arranged on the caliper, and a screw rod which penetrates through the sliding groove and is in threaded connection with the sliding block is connected to the top plate in a threaded mode. This application has the comparatively convenient effect of seam width measurement operation.

Description

Pavement crack width tester

Technical Field

The application relates to the technical field of crack measuring tools, in particular to a pavement crack width tester.

Background

The pavement is divided into a rigid pavement and a flexible pavement according to mechanical characteristics, the rigid pavement can generate a plate body effect under the action of driving load and has higher bending strength, such as a cement concrete pavement, the flexible pavement has smaller bending strength and mainly resists the action of the driving load by means of compressive strength and shear strength, residual deformation can be generated under the action of repeated load, such as an asphalt pavement and a gravel pavement, the paved pavement is exposed to the sun for a long time and is washed by rainwater to cause the pavement to appear a ground joint, and the width of the ground joint is firstly measured when the ground joint is repaired.

The current chinese patent with publication number CN208983978U discloses a pavement crack width tester, which comprises a base plate, the equal rigid coupling in bottom left and right sides of bottom plate has the bearing, the bottom left and right sides of bearing all rotates and is connected with the extension board, it is connected with the gyro wheel to rotate between the extension board, the equal rigid coupling in top left and right sides of bottom plate has the stator, the top rigid coupling of kicking block has the sleeve pipe.

In view of the above-mentioned related art, the inventor thinks that there is the defect that when measuring the crack width, the measurement personnel need to continuously grip the handle to reduce the problem that the jamming rod may shake, and the operation is troublesome.

SUMMERY OF THE UTILITY MODEL

In order to improve the comparatively troublesome defect of crack width measurement operation, this application provides a road surface crack width tester.

The application provides a road surface crack width tester adopts following technical scheme:

a pavement crack width tester comprises a square annular bottom frame, wherein two supporting pieces are arranged on the upper surface of the bottom frame, the end parts of the two supporting pieces are fixedly connected with a top plate together, the lower surface of the top plate is fixedly connected with a first supporting rod, the end surface, far away from the top plate, of the first supporting rod is fixedly connected with a first clamping rod, the top plate is provided with a sliding groove, the sliding groove is connected with a sliding block in a sliding manner, the lower surface of the sliding block is fixedly connected with a second supporting rod, and the end surface, far away from the sliding block, of the second supporting rod is fixedly connected with a second clamping rod; fixedly connected with slide caliper rule on the branch one, be provided with the scale mark on the slide caliper rule, threaded connection has the lead screw of wearing to establish the spout and with slider threaded connection on the roof.

By adopting the technical scheme, when the pavement crack width is measured, the first clamping rod is inserted into the gap and is tightly attached to one inner wall of the gap; then the screw rod is rotated to enable the sliding block to move along the sliding groove, so that the second supporting rod is driven to move until a second clamping rod on the second supporting rod is tightly attached to the other inner wall of the gap; finally, the width of a road surface gap is determined by reading the distance between the first clamping rod and the second clamping rod on the caliper; after the distance of the second clamping rod is adjusted, the screw rod is in threaded connection with the sliding block, so that the position of the second clamping rod which can be loosened is relatively stable, and the possibility that the second clamping rod shakes is low; in the measuring process, the measuring personnel is not required to hold the screw rod all the time to complete the measuring work, and the operation is simple and rapid.

Preferably, the side surface of the top plate is fixedly connected with a limiting clamp, and the screw rod is fixedly sleeved with a saw tooth disc; when the limiting clamp is in an initial state, the end part of the limiting clamp is clamped with the saw tooth disc.

By adopting the technical scheme, when the screw rod needs to be rotated, the limiting clamp is pressed to separate the end part of the limiting clamp from the sawtooth disc, so that the screw rod can normally rotate; after the position adjustment of the second clamping rod is completed, the limiting clamp is loosened, and the limiting clamp is clamped with the saw tooth disc at the moment, so that the rotation of the screw rod is limited, the stability of the second clamping rod is further improved, the problem that the second clamping rod can shake in the measuring process is reduced, and the measuring accuracy is improved.

Preferably, a strip hole is formed in the caliper, a first pointer located in the strip hole is fixedly connected to the first support rod, and a second pointer arranged in the strip hole in a sliding mode is fixedly connected to the second support rod.

By adopting the technical scheme, the position of the first pointer is the position of the first clamping rod, and the position of the second pointer is the position of the second clamping rod, so that the width of the pavement crack can be conveniently known by reading the distance between the first pointer and the second pointer, and the measuring device is more convenient to use.

Preferably, the side face of the first clamping rod close to the gap and the first pointer are aligned with the zero scale of the caliper, and the side face of the second clamping rod close to the gap and the second pointer are located in the same plane.

Through adopting above-mentioned technical scheme, set up pointer one in the zero scale position of slide caliper rule, and the card pole two is close to the side in gap and is in the coplanar with pointer two, consequently reads the slide caliper rule that pointer two corresponds and goes up numerical value, the width in road surface gap promptly, has further made things convenient for measurement work.

Preferably, the inner wall of spout has seted up the mounting groove, fixedly connected with slides complex installation piece with the mounting groove on the slider.

Through adopting above-mentioned technical scheme, be equipped with the complex mounting groove that slides and install the piece, can form the support to the slider on the one hand, on the other hand has played the guide effect to the removal of slider.

Preferably, support piece includes fixed cover, gear and rack, fixed cover is vertical to be fixed on the underframe, the gear revolve connects in fixed cover, the rack slides and wears to establish fixed cover, and rack and gear engagement, the rack is located the outer tip and the roof fixed connection of fixed cover.

Through adopting above-mentioned technical scheme, the gear is rotated, and because gear and rack meshing, therefore the rack can slide from top to bottom along fixed cover, and then has accomplished the altitude mixture control of roof to can adjust the height of kelly one and kelly two according to the actual work demand, further make things convenient for the use of measuring apparatu.

Preferably, two fixedly connected with dwang jointly on support piece's the gear, fixedly connected with hand wheel on the tip of dwang.

Through adopting above-mentioned technical scheme, can make the dwang rotate through rotating the hand wheel, and the common fixed connection of gear on dwang and two bracing pieces, and then can adjust a plurality of support piece's effective length simultaneously, further made things convenient for the use of measuring apparatu.

Preferably, the fixing sleeve close to the hand wheel is provided with a butt joint groove, and the hand wheel is provided with a limit pin in butt joint with the butt joint groove in a threaded connection mode.

Through adopting above-mentioned technical scheme, roof position control accomplishes the back, when needing to fix the rack, rotates the spacer pin and supports tightly until spacer pin and butt groove to the rotation of dwang has been restricted, with this position of having restricted the rack, has promoted the stability of roof.

In summary, the present application includes at least one of the following beneficial technical effects:

the screw rod is in threaded connection with the sliding block, so that the position of the second clamping rod of the screw rod can be loosened, the possibility that the second clamping rod shakes is low, measurement can be completed without holding the screw rod by a measurer all the time in the measurement process, and the operation is simple and rapid;

when the screw rod needs to be rotated, the limiting clamp is pressed to separate the end part of the limiting clamp from the sawtooth disc, so that the screw rod can normally rotate; after the position of the second clamping rod is adjusted, the limiting clamp is loosened, and the limiting clamp is clamped with the sawtooth disc at the moment, so that the rotation of the screw rod is limited, the stability of the second clamping rod is further improved, the problem that the second clamping rod possibly shakes in the measuring process is reduced, and the measuring accuracy is improved;

the gear is rotated, and the gear is meshed with the rack, so that the rack can slide up and down along the fixed sleeve, the height adjustment of the top plate is further completed, the heights of the first clamping rod and the second clamping rod can be adjusted according to actual working requirements, and the use of the measuring instrument is further facilitated.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present application.

FIG. 2 is a schematic view of the gear mounting structure in the embodiment of the present application.

Description of reference numerals: 1. a bottom frame; 11. a universal wheel; 2. a support member; 21. fixing a sleeve; 211. a butt joint groove; 22. a gear; 23. a rack; 24. rotating the rod; 25. a hand wheel; 251. a spacing pin; 3. a top plate; 31. a chute; 311. mounting grooves; 32. a slider; 321. mounting a sheet; 33. a screw rod; 331. a saw tooth disc; 34. a limiting clamp; 4. a first support rod; 41. a first clamping rod; 42. a first pointer; 5. a second supporting rod; 51. a second clamping rod; 52. a second pointer; 6. a caliper; 61. scale lines; 62. and (4) forming a bar hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses road surface crack width tester. Referring to fig. 1, the bottom frame 1 is a rectangular frame structure, the bottom frame 1 is fixedly connected with four universal wheels 11, the number of the universal wheels 11 is four, and the four universal wheels 11 are uniformly fixed on four corners of the bottom frame 1. With reference to fig. 2, the bottom frame 1 is provided with two supporting members 2, and the two supporting members 2 are symmetrically distributed along the central axis of the bottom frame 1 in the width direction. Each set of supports 2 comprises a fixed sleeve 21, a gear 22 and a rack 23. The fixed sleeve 21 is of a square tubular structure, and the fixed sleeve 21 is vertically fixed on the bottom frame 1. The gear 22 is rotatably connected in the fixing sleeve 21, the length direction of the rack 23 is consistent with that of the fixing sleeve 21, one end part of the rack 23 is positioned in the fixing sleeve 21, the other end part of the rack 23 is arranged in the fixing sleeve 21 in a penetrating and sliding mode, and the rack 23 is meshed with the gear 22.

Referring to fig. 2, the gears 22 of the two sets of supporting members 2 are connected to a rotating rod 24, the rotating rod 24 is a round rod-shaped structure, and the length direction of the rotating rod 24 is consistent with the length direction of the bottom frame 1. A hand wheel 25 is fixedly connected to one end of the rotating rod 24, and the rotating rod 24 can be conveniently rotated by rotating the hand wheel 25. The fixed sleeve 21 close to the hand wheel 25 is provided with an abutting groove 211, the abutting groove 211 is an annular groove, and the abutting groove 211 and the screw rod 33 are coaxial. The hand wheel 25 is connected with a limit pin 251 through threads, and the limit pin 251 penetrates through the hand wheel 25 and is tightly abutted to the abutting groove 211.

Referring to fig. 1, the end portions of the two racks 23 far from the fixed sleeve 21 are fixedly connected with the top plate 3 together, the top plate 3 is of a rectangular plate-shaped structure, the length direction of the top plate 3 is consistent with the length direction of the bottom frame 1, the top plate 3 is provided with a sliding groove 31, the length direction of the sliding groove 31 is consistent with the length direction of the top plate 3, and the sliding groove 31 penetrates through the top plate 3 along the thickness direction of the top plate 3. The top plate 3 is slidably connected with a sliding block 32 positioned in the sliding groove 31, the sliding block 32 is of a square structure, two opposite side surfaces of the sliding block 32 are fixedly connected with mounting pieces 321, the mounting pieces 321 are of a rectangular structure, and the length direction of the mounting pieces 321 is consistent with that of the top plate 3. The mounting groove 311 has been seted up on the inner wall of spout 31, and the length direction of mounting groove 311 is unanimous with the length direction of spout 31, and the quantity of mounting groove 311 is two, and two mounting grooves 311 are along 3 length direction's of roof axis symmetric distribution, and two installation pieces 321 and the cooperation of sliding of two mounting grooves 311 one-to-one.

Referring to fig. 1, a screw rod 33 is connected to the top plate 3 through a screw thread, the length direction of the screw rod 33 is consistent with the length direction of the top plate 3, one end of the screw rod 33 is rotatably connected to the inner wall of the chute 31, the other end of the screw rod 33 rotatably penetrates through the top plate 3 and extends to the outside of the chute 31, and a slide block 32 is connected to the screw rod 33 through a screw thread; therefore, the screw 33 is rotated, and the sliding block 32 can slide along the sliding groove 31 under the matching guiding action of the mounting groove 311 and the mounting piece 321. The side surface of the top plate 3 close to the screw rod 33 is fixedly connected with a limiting clamp 34, the screw rod 33 is fixedly connected with a sawtooth disc 331, the sawtooth disc 331 is arranged coaxially with the screw rod 33, and when the limiting clamp 34 is in an original state, the end part of the limiting clamp is clamped with the tooth tip of the sawtooth disc 331. When the screw rod 33 needs to be rotated, the limiting clamp 34 is pressed to separate the end part from the sawtooth disc 331, so that the screw rod 33 can be normally rotated; after the position adjustment of the second clamping rod 51 is completed, the limiting clamp 34 is released, and at the moment, the limiting clamp 34 is clamped with the sawtooth disc 331, so that the rotation of the screw rod 33 is limited.

Referring to fig. 1, a first supporting rod 4 is fixedly connected to a side surface of the top plate 3 close to the rack 23, the first supporting rod 4 is of a square rod-shaped structure, the length direction of the first supporting rod 4 is consistent with that of the rack 23, and the end portion, far away from the top plate 3, of the first supporting rod 4 penetrates through the middle of the bottom frame 1 and extends to the position below the bottom frame 1. The end face, far away from the top plate 3, of the support rod I4 is fixedly connected with a clamping rod I41, and the length direction of the clamping rod I41 is consistent with that of the support rod I4. The lower surface of the sliding block 32 is fixedly connected with a second supporting rod 5, the second supporting rod 5 is of a square rod-shaped structure, and the length direction of the second supporting rod 5 is consistent with that of the first supporting rod 4. The end face, far away from the sliding block 32, of the second support rod 5 is fixedly connected with a second clamping rod 51, and the length direction of the second clamping rod 51 is consistent with that of the second support rod 5.

Referring to fig. 1, a caliper 6 is fixedly connected to the first support rod 4, the length direction of the caliper 6 is consistent with the length direction of the top plate 3, a scale mark 61 is arranged on the caliper 6, and the measuring direction of the scale mark 61 is consistent with the length direction of the caliper 6. The caliper 6 is provided with a strip hole 62, and the length direction of the strip hole 62 is consistent with the length direction of the caliper 6. And a first pointer 42 is fixedly connected to the first support rod 4, and the side surface of the first clamping rod 41 close to the road gap and the first pointer 42 are aligned with the zero scale of the caliper 6. The second pointer 52 is fixedly connected to the second support rod 5, the second pointer 52 is located in the strip hole 62, the second pointer 52 can slide along the strip hole 62, and the side face, close to the gap, of the second clamping rod 51 and the second pointer 52 are located in the same plane.

The implementation principle of the pavement crack width tester in the embodiment of the application is as follows: when the pavement crack width is measured, the first clamping rod 41 is inserted into the gap, and the first clamping rod 41 is tightly attached to one inner wall of the gap; then the screw rod 33 is rotated to enable the sliding block 32 to move along the sliding groove 31, so that the second support rod 5 is driven to move until the second clamping rod 51 on the second support rod 5 is tightly attached to the other inner wall of the gap; finally, the width of the road gap is determined by reading the distance between the first clamping rod 41 and the second clamping rod 51 on the caliper 6; after the distance of the second clamping rod 51 is adjusted, the screw rod 33 is in threaded connection with the sliding block 32, so that the position of the second clamping rod 51, which can be loosened from the screw rod 33, is relatively stable, and the possibility that the second clamping rod 51 may shake is low; in the measuring process, the measuring personnel is not required to hold the screw rod 33 all the time to complete the measuring work, and the operation is simple and rapid.

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. The utility model provides a road surface crack width tester which characterized in that: the square-ring-shaped bottom frame (1) is included, two supporting pieces (2) are arranged on the upper surface of the bottom frame (1), a top plate (3) is fixedly connected to the end portions of the two supporting pieces (2) together, a first supporting rod (4) is fixedly connected to the lower surface of the top plate (3), a first clamping rod (41) is fixedly connected to the end surface, away from the top plate (3), of the first supporting rod (4), a sliding groove (31) is formed in the top plate (3), a sliding block (32) is connected to the sliding groove (31) in a sliding mode, a second supporting rod (5) is fixedly connected to the lower surface of the sliding block (32), and a second clamping rod (51) is fixedly connected to the end surface, away from the sliding block (32), of the; fixedly connected with slide caliper rule (6) on branch (4), be provided with scale mark (61) on slide caliper rule (6), threaded connection has lead screw (33) of wearing to establish spout (31) and with slider (32) threaded connection on roof (3).

2. The pavement crack width tester of claim 1, characterized in that: a limiting clamp (34) is fixedly connected to the side face of the top plate (3), and a saw tooth disc (331) is arranged on the fixed sleeve (21) on the screw rod (33); when the limiting clamp (34) is in an initial state, the end part of the limiting clamp (34) is clamped with the sawtooth disc (331).

3. The pavement crack width tester of claim 1, characterized in that: a hole (62) has been seted up on slide caliper rule (6), fixedly connected with is located pointer one (42) in hole (62) on branch one (4), fixedly connected with slides and sets up pointer two (52) in hole (62) on branch two (5).

4. The pavement crack width tester of claim 3, characterized in that: the side face, close to the gap, of the first clamping rod (41) and the first pointer (42) are aligned with the zero scale of the caliper (6), and the side face, close to the gap, of the second clamping rod (51) and the second pointer (52) are located in the same plane.

5. The pavement crack width tester of claim 1, characterized in that: mounting groove (311) have been seted up on the inner wall of spout (31), fixedly connected with slides complex installation piece (321) with mounting groove (311) on slider (32).

6. The pavement crack width tester of claim 1, characterized in that: support piece (2) are including fixed cover (21), gear (22) and rack (23), fixed cover (21) are vertical to be fixed on underframe (1), gear (22) rotate to be connected in fixed cover (21), fixed cover (21) is worn to establish in rack (23) slides, and rack (23) and gear (22) meshing, rack (23) are located the outer tip and roof (3) fixed connection of fixed cover (21).

7. The pavement crack width tester of claim 6, characterized in that: two common fixedly connected with dwang (24) on gear (22) of support piece (2), fixedly connected with hand wheel (25) on the tip of dwang (24).

8. The pavement crack width tester of claim 7, characterized in that: close to hand wheel (25) seted up butt joint groove (211) on fixed cover (21), threaded connection has spacer pin (251) with butt joint groove (211) on hand wheel (25).