CN112726352A - Road concrete pavement contraction joint cutting tool and use method thereof - Google Patents
Road concrete pavement contraction joint cutting tool and use method thereof Download PDFInfo
- Publication number
- CN112726352A CN112726352A CN202011502632.XA CN202011502632A CN112726352A CN 112726352 A CN112726352 A CN 112726352A CN 202011502632 A CN202011502632 A CN 202011502632A CN 112726352 A CN112726352 A CN 112726352A
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- concrete pavement
- pavement
- contraction joint
- cutting tool
- road
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/02—Devices for making, treating or filling grooves or like channels in not-yet-hardened paving, e.g. for joints or markings; Removable forms therefor; Devices for introducing inserts or removable insert-supports in not-yet-hardened paving
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/02—Devices for making, treating or filling grooves or like channels in not-yet-hardened paving, e.g. for joints or markings; Removable forms therefor; Devices for introducing inserts or removable insert-supports in not-yet-hardened paving
- E01C23/025—Making or working grooves or like channels in laid paving, e.g. smoothing groove edges
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
- Road Paving Structures (AREA)
Abstract
The invention discloses a road concrete pavement contraction joint cutting tool, wherein: the device comprises an operating rod, a pressing plate and a contraction joint cutter, wherein the front length and the rear length of the pressing plate are matched with the width of a road concrete pavement, the contraction joint cutter is a cutter body, the thickness of the cutter body is matched with the width of the contraction joint of the road concrete pavement, the contraction joint cutter is fixed in the middle of the bottom surface of the pressing plate along the front direction and the rear direction of the pressing plate, the lower end of the operating rod is hinged to the upper surface of the pressing plate, and the. A compensating plate is fixed in the middle of the lower surface of the pressing plate along the front-back direction of the pressing plate, the upper end of the shrinkage cutter is fixed in the middle of the lower surface of the compensating plate, and the compensating plate has certain thickness and left-right width, so that when the shrinkage cutter cuts into a road concrete pavement to cut a pavement shrinkage joint, extruded concrete is pressed by the compensating plate, and therefore bulges can not be formed on two sides of the pavement shrinkage joint. The invention has the advantages of simple and convenient operation, quick joint cutting, construction cost saving and transverse contraction joint cutting quality guarantee.
Description
Technical Field
The invention relates to the technical field of road construction, in particular to a road concrete pavement contraction joint cutting tool and a using method thereof.
Background
In order to adapt to the change of environmental temperature, the concrete road surface is divided into one block and one plate by longitudinal and transverse seams. The surface layer is longitudinally provided with construction joints and transversely provided with contraction joints. The transverse contraction joint separates the plates by adopting a false joint mode with the depth not less than the thickness 1/3 of the broken plates and the gap width of 3-8 mm.
The transverse contraction joint has two modes of a hard joint cutting and a soft joint cutting, wherein the hard joint cutting means that after the strength of the concrete of the surface layer reaches a certain strength, the joint cutting is carried out by adopting a special joint cutting machine for the concrete pavement. The conventional joint cutting mode can be used for the next construction only after the concrete strength is achieved, and has the defects of long construction period, high cost of a special joint cutting machine, late opening time of a concrete pavement and the like.
For the condition that the opening time of the road concrete pavement is required to be early, the concrete pavement needs to be subjected to joint cutting in advance. In this case, the transverse contraction joint of the pavement adopts a soft joint cutting, and the joint cutting is carried out after the initial setting and before the final setting of the pavement concrete. The soft slits do not have a uniform, dedicated slitting tool. The conventional method is to cut a steel plate into long steel sheets for manual seam pressing. The steel sheet is adopted for seam pressing, so that the operation is not easy; the labor cost is high; the steel sheet seam pressing has the quality problems of uneven and unsmooth seams, inconsistent seam width, easy falling of broken concrete stones at the seam edges and the like. The invention relates to a special tool for a road concrete pavement contraction joint cutting, which aims at the actual situation that a soft joint cutting of a road concrete pavement does not have a special tool.
Disclosure of Invention
The invention aims to solve the problems mentioned in the background technology and provides a road concrete pavement contraction joint cutting tool and a using method thereof.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a road concrete pavement contraction joint slitting tool, wherein: the device comprises an operating rod, a pressing plate and a contraction joint cutter, wherein the front length and the rear length of the pressing plate are matched with the width of a road concrete pavement, the contraction joint cutter is a cutter body, the thickness of the cutter body is matched with the width of the contraction joint of the road concrete pavement, the contraction joint cutter is fixed in the middle of the bottom surface of the pressing plate along the front direction and the rear direction of the pressing plate, the lower end of the operating rod is hinged to the upper surface of the pressing plate, and the.
In order to optimize the technical scheme, the specific measures adopted further comprise:
a compensating plate is fixed in the middle of the lower surface of the pressing plate along the front-back direction of the pressing plate, the upper end of the shrinkage cutter is fixed in the middle of the lower surface of the compensating plate, and the compensating plate has certain thickness and left-right width, so that when the shrinkage cutter cuts into a road concrete pavement to cut a pavement shrinkage joint, extruded concrete is pressed by the compensating plate, and therefore bulges can not be formed on two sides of the pavement shrinkage joint.
The thickness of the compensating plate is not more than 2mm, and the width along the two sides of the seam along the seam direction is 2 cm.
The upper surface of the pressing plate is provided with a link block, a fixed pin seat, a movable pin seat and a fixed pin, the link block is fixed on the upper surface of the middle part of the pressing plate, the fixed pin seat is fixed on the link block, the movable pin seat is in hinged fit with the fixed pin seat through the fixed pin, and the lower end of the operating rod is fixedly connected with the movable pin seat.
The front end of the operating rod is of a semicircular duck tongue plate structure, and a hole is drilled in the center of the duck tongue plate and used for a fixing pin to penetrate through.
The lower end of the shrinkage cutter is sharp, and the widths of the middle part and the upper part of the shrinkage cutter are larger than that of the lower end of the shrinkage cutter.
The operating rod, the pressing plate and the contraction joint cutter are all made of hard steel materials.
The left end and the right end of the pressing plate are both tilted upwards, so that concrete on the left side and the right side of the pressing plate cannot penetrate to the upper surface of the pressing plate.
The use method of the road concrete pavement contraction joint cutting tool comprises the following steps:
firstly, pouring pavement concrete, and waiting for initial setting of the pavement concrete;
after initial setting and before final setting of the pavement concrete, marking the transverse contraction joint position of the pavement concrete by ink lines;
step three, manually operating a road concrete pavement contraction joint cutting tool, aligning a contraction joint cutter with the marking ink line, and then pressing the contraction joint cutter into the concrete pavement to enable the lower surface of the pressing plate to be attached to the concrete pavement;
and fourthly, after the shrinkage joint cutting tool of the road concrete pavement is pressed back and forth in the width direction of the road concrete pavement for a plurality of times, the shrinkage joint cutting tool of the road concrete pavement is lifted, and the shrinkage joint cutting is finished.
In the fourth step, the number of times of pressing and pulling the road concrete pavement contraction joint cutting tool back and forth in the width direction of the road concrete pavement is 2-3 times.
The invention relates to a road concrete pavement contraction joint cutting tool, which is used for cutting a soft joint of a concrete pavement. The method has the advantages of simple and convenient joint cutting operation, construction cost saving, great reduction of various expenses of water, electricity, cutting saw blades, manpower and the like consumed by mechanical joint cutting, avoidance of quality problems of irregular panel fracture, loose aggregate at the joints and the like caused by inaccurate accurate joint timing control, and guarantee of the quality of transverse contraction joints.
The invention fixes the compensating plate in the middle of the lower surface of the pressing plate along the front and back directions of the pressing plate, so that when the contraction joint cutter cuts into the road concrete pavement to cut the pavement contraction joint, the extruded concrete is pressed by the compensating plate and is uniformly extruded below the whole pressing plate, thereby avoiding forming bulges on two sides of the pavement contraction joint.
Drawings
FIG. 1 is a front view of a first embodiment of the present invention;
FIG. 2 is a front view of a second embodiment of the present invention;
FIG. 3 is a top view of a first embodiment, a second embodiment of the present invention;
fig. 4 is a side view of the first and second embodiments of the present invention.
The label names in the figure: the device comprises an operating rod 1, a pressing plate 2, a link block 3, a fixed pin seat 4, a movable pin seat 5, a fixed pin 6, a shrinkage joint cutter 7 and a compensation plate 8.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.
The first embodiment: as shown in figures 1, 3 and 4,
the road concrete pavement contraction joint slitting instrument of this embodiment, wherein: the device comprises an operating rod 1, a pressing plate 2 and a contraction joint cutter 7, wherein the front length and the rear length of the pressing plate 2 are matched with the width of a road concrete pavement, the contraction joint cutter 7 is a cutter body with the thickness matched with the contraction joint width of the road concrete pavement, the contraction joint cutter 7 is fixed in the middle of the bottom surface of the pressing plate 2 along the front direction and the rear direction of the pressing plate 2, the lower end of the operating rod 1 is hinged to the upper surface of the pressing plate 2, and the upper part of the operating rod 1 is a.
In the embodiment, the upper surface of the pressing plate 2 is provided with a link block 3, a fixed pin seat 4, a movable pin seat 5 and a fixed pin 6, the link block 3 is fixed on the upper surface of the middle part of the pressing plate 2, the fixed pin seat 4 is fixed on the link block 3, the movable pin seat 5 is in hinged fit with the fixed pin seat 4 through the fixed pin 6, and the lower end of the operating rod 1 is fixedly connected with the movable pin seat 5.
In the embodiment, the front end of the operating rod 1 is in a semicircular duck tongue plate structure, and a hole is drilled in the center of the duck tongue plate for the fixing pin 6 to pass through.
In the embodiment, the lower end of the shrinkage cutter 7 is sharp, and the widths of the middle part and the upper part of the shrinkage cutter 7 are larger than that of the lower end of the shrinkage cutter 7.
In the embodiment, the operating rod 1, the pressing plate 2 and the contraction joint cutter 7 are all made of hard steel materials.
In the embodiment, both ends all upwards stick up about clamp plate 2, make the unable upper surface that overflows to clamp plate 2 of concrete of the left and right sides of clamp plate 2.
Second embodiment: as shown in figures 2, 3 and 4,
the road concrete pavement contraction joint cutting tool comprises an operating rod 1, a pressing plate 2 and a contraction joint cutter 7, wherein the front and back length of the pressing plate 2 is matched with the width of a road concrete pavement, the contraction joint cutter 7 is a cutter body with the thickness matched with the contraction joint width of the road concrete pavement, the contraction joint cutter 7 is fixed in the middle of the bottom surface of the pressing plate 2 along the front and back direction of the pressing plate 2, the lower end of the operating rod 1 is hinged on the upper surface of the pressing plate 2, the upper part of the operating rod 1 is a handheld part, a compensating plate 8 is fixed in the middle of the lower surface of the pressing plate 2 along the front and back direction of the pressing plate 2, the upper end of the contraction joint cutter 7 is fixed in the middle of the lower surface of the, when the contraction joint cutter 7 cuts into the road concrete pavement to cut the pavement contraction joint, the extruded concrete is pressed by the compensation plate 8, so that no bulge is formed on two sides of the pavement contraction joint.
The thickness of the compensation plate 8 is not more than 2mm, and the width along the two sides of the seam along the seam direction is 2 cm.
The same parts as those in the first embodiment are not described.
The use method of the road concrete pavement contraction joint cutting tool comprises the following steps:
firstly, pouring pavement concrete, and waiting for initial setting of the pavement concrete;
after initial setting and before final setting of the pavement concrete, marking the transverse contraction joint position of the pavement concrete by ink lines;
step three, manually operating a road concrete pavement contraction joint cutting tool, aligning a contraction joint cutter 7 with the marking ink line, and then pressing the contraction joint cutter 7 into the concrete pavement to enable the lower surface of the pressing plate 2 to be attached to the concrete pavement;
and fourthly, after the shrinkage joint cutting tool of the road concrete pavement is pressed back and forth in the width direction of the road concrete pavement for a plurality of times, the shrinkage joint cutting tool of the road concrete pavement is lifted, and the shrinkage joint cutting is finished.
In the fourth step, the number of times of pressing and pulling the road concrete pavement contraction joint cutting tool back and forth in the width direction of the road concrete pavement is 2-3 times.
The invention relates to a road concrete pavement contraction joint cutting tool, which mainly comprises the following components:
the operating lever 1: the diameter is 48mm, the wall thickness is 3.5mm, the material is seamless steel pipe, and the length is 3.5 m; one side of the steel pipe is processed into a semicircular duck tongue plate form, and a hole is drilled in the center of the duck tongue plate, wherein the aperture is phi 22 mm;
and (3) pressing a plate 2: 1 steel plate with the thickness of 5mm, the size of which is 440 multiplied by 400mm, the left end and the right end are both upwards tilted, and the tilting height is 20 mm;
the link block 3: 1 piece of 20mm thick steel plate with the size of 100 multiplied by 100 mm;
fixing the pin boss 4: 1 steel plate with the diameter of 20mm is 60mm multiplied by 60mm, and the central drilling diameter is 22 mm;
movable pin boss 5: 1 steel plate with the diameter of 20mm is 60mm multiplied by 60mm, and the central drilling diameter is 22 mm;
fixing pin 6: round steel rods with the diameter of 20mm and the length of 100 mm;
a necking cutter 7: the thickness of the steel plate is 5mm, the size is 400 multiplied by 60mm, and the lower end is sharpened.
Assembling and welding sequence: the submerged arc full-welding is carried out on the central line position of the plane of the link block 3 and the bottom edge of the fixed pin seat 4 by 60mm, then the combined piece of the link block 3 and the fixed pin seat 4 is welded on the central position of the pressing plate 2 along the edge raising direction, then the compensating plate 8 is welded on the central position of the bottom surface of the pressing plate 2, the contraction joint cutter 7 is arranged on the lower surface of the compensating plate 8, the direction is the same as that of the combined piece of the link block 3 and the fixed pin seat 4, and finally the operating rod 1 and the combined piece are spliced into the contraction joint cutting tool for the road concrete.
The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may be made by those skilled in the art without departing from the principle of the invention.
Claims (10)
1. The utility model provides a road concrete pavement contraction joint cutting instrument which characterized by: including action bars (1), clamp plate (2) and shrinkage joint cutter (7), clamp plate (2) around length suit with the width of road concrete road, shrinkage joint cutter (7) are the cutter body that thickness and road concrete road shrinkage joint width suited, shrinkage joint cutter (7) fix at clamp plate (2) bottom surface middle part along clamp plate (2) fore-and-aft direction, action bars (1) lower extreme articulate in clamp plate (2) upper surface, action bars (1) upper portion is handheld portion.
2. A road concrete pavement crater-cutting tool as claimed in claim 1, wherein: the lower surface middle part of the pressing plate (2) is fixed with a compensating plate (8) along the front and back direction of the pressing plate (2), the upper end of the contraction joint cutter (7) is fixed at the lower surface middle part of the compensating plate (8), the compensating plate (8) has certain thickness and left and right width, so that when the contraction joint cutter (7) cuts into a road concrete pavement to cut a pavement contraction joint, extruded concrete is pressed by the compensating plate (8), and bulges can not be formed on two sides of the pavement contraction joint.
3. A road concrete pavement crater-cutting tool as claimed in claim 2, wherein: the thickness of the compensation plate (8) is not more than 2mm, and the width of the compensation plate along the two sides of the seam along the seam direction is 2 cm.
4. A road concrete pavement crater-cutting tool as claimed in claim 3, wherein: clamp plate (2) upper surface be equipped with chain block (3), fixed key seat (4), activity key seat (5) and fixed pin (6), chain block (3) fix at clamp plate (2) middle part upper surface, fixed key seat (4) fix on chain block (3), activity key seat (5) through fixed pin (6) with fixed key seat (4) articulated cooperation, the lower extreme and the activity key seat (5) fixed connection of action bars (1).
5. A road concrete pavement crater-cutting tool according to claim 4, characterized in that: the front end of the operating rod (1) is of a semicircular duck tongue plate structure, and a hole is drilled in the center of the duck tongue plate and used for a fixing pin (6) to penetrate through.
6. A road concrete pavement crater-cutting tool according to claim 5, characterized in that: the lower end of the contraction joint cutter (7) is sharp, and the widths of the middle part and the upper part of the contraction joint cutter (7) are larger than that of the lower end of the contraction joint cutter (7).
7. A road concrete pavement crater-cutting tool according to claim 6, characterized in that: the operating rod (1), the pressing plate (2) and the contraction joint cutter (7) are all made of hard steel materials.
8. A road concrete pavement crater-cutting tool as claimed in claim 7, wherein: both ends all upwards perk about clamp plate (2), make the concrete of clamp plate (2) left and right sides can't spill over to clamp plate (2) upper surface.
9. A method of using a road concrete pavement crater-cutting tool as claimed in claim 2, wherein the method comprises the following steps: the method comprises the following steps:
firstly, pouring pavement concrete, and waiting for initial setting of the pavement concrete;
after initial setting and before final setting of the pavement concrete, marking the transverse contraction joint position of the pavement concrete by ink lines;
step three, manually operating a road concrete pavement contraction joint cutting tool, aligning a contraction joint cutter (7) with the marking ink line, and then pressing the contraction joint cutter (7) into the concrete pavement to enable the lower surface of the pressing plate (2) to be attached to the concrete pavement;
and fourthly, after the shrinkage joint cutting tool of the road concrete pavement is pressed back and forth in the width direction of the road concrete pavement for a plurality of times, the shrinkage joint cutting tool of the road concrete pavement is lifted, and the shrinkage joint cutting is finished.
10. The method of using a road concrete pavement crater-cutting tool as claimed in claim 9, wherein the tool comprises: in the fourth step, the number of times of pressing and pulling the road concrete pavement contraction joint cutting tool back and forth in the width direction of the road concrete pavement is 2-3 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011502632.XA CN112726352A (en) | 2020-12-18 | 2020-12-18 | Road concrete pavement contraction joint cutting tool and use method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011502632.XA CN112726352A (en) | 2020-12-18 | 2020-12-18 | Road concrete pavement contraction joint cutting tool and use method thereof |
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| Publication Number | Publication Date |
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| CN112726352A true CN112726352A (en) | 2021-04-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011502632.XA Pending CN112726352A (en) | 2020-12-18 | 2020-12-18 | Road concrete pavement contraction joint cutting tool and use method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508029A (en) * | 2022-03-07 | 2022-05-17 | 中国十七冶集团有限公司 | Joint cutting method for concrete road in initial setting stage |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505189A (en) * | 1990-04-27 | 1996-04-09 | Chiuminatta; Edward | Apparatus and method cutting unhardened concrete |
| US5570677A (en) * | 1992-02-14 | 1996-11-05 | Chiuminatta; Edward R. | Method and apparatus for cutting wet concrete |
| CN2558691Y (en) * | 2002-03-13 | 2003-07-02 | 大庆油田路桥工程有限责任公司 | Form of contraction joint cutter |
| CN203247492U (en) * | 2013-05-02 | 2013-10-23 | 河北科信博工程机械制造有限公司 | Novel soft joint-cutting machine |
| CN204000559U (en) * | 2014-08-11 | 2014-12-10 | 淄博安茂福国际贸易有限公司 | Concrete joint-cutting device |
| CN106436546A (en) * | 2016-12-01 | 2017-02-22 | 山东大学 | Pervious concrete cutter and using method thereof |
| CN210659302U (en) * | 2019-09-03 | 2020-06-02 | 上海宝冶集团有限公司 | Joint cutter for concrete expansion joint |
-
2020
- 2020-12-18 CN CN202011502632.XA patent/CN112726352A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5505189A (en) * | 1990-04-27 | 1996-04-09 | Chiuminatta; Edward | Apparatus and method cutting unhardened concrete |
| US5570677A (en) * | 1992-02-14 | 1996-11-05 | Chiuminatta; Edward R. | Method and apparatus for cutting wet concrete |
| CN2558691Y (en) * | 2002-03-13 | 2003-07-02 | 大庆油田路桥工程有限责任公司 | Form of contraction joint cutter |
| CN203247492U (en) * | 2013-05-02 | 2013-10-23 | 河北科信博工程机械制造有限公司 | Novel soft joint-cutting machine |
| CN204000559U (en) * | 2014-08-11 | 2014-12-10 | 淄博安茂福国际贸易有限公司 | Concrete joint-cutting device |
| CN106436546A (en) * | 2016-12-01 | 2017-02-22 | 山东大学 | Pervious concrete cutter and using method thereof |
| CN210659302U (en) * | 2019-09-03 | 2020-06-02 | 上海宝冶集团有限公司 | Joint cutter for concrete expansion joint |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508029A (en) * | 2022-03-07 | 2022-05-17 | 中国十七冶集团有限公司 | Joint cutting method for concrete road in initial setting stage |
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Application publication date: 20210430 |