A concrete pressure quality monitoring device for road construction

Abstract

The present invention discloses a concrete pressure quality monitoring device for road construction, which relates to the technical field of concrete quality monitoring, and includes a support frame, an alignment correction piece is installed on the parallel connecting plate, and a telescopic cylinder located below the support support plate is installed on the inner side of the support frame. The present invention sets the alignment correction piece, when the concrete block is placed on the support support plate, if the locking rod and the limiting hole are not separated, it means that one side of the concrete block is not completely fitted with the parallel connecting plate, when one side of the concrete block is completely fitted with the parallel connecting plate, the telescopic cylinder is started, and the plug is moved to the bottom of the inner wall of the liquid storage bin by the extension of the telescopic cylinder, and the continued extension of the telescopic cylinder can make the plug drive the liquid storage bin to move, so that the U-shaped connecting frame pulls the straight guide rail through the shifting pin, so that the punctuation surface on the concrete block can be directed to the monitoring probe, so that the monitoring probe is parallel to the punctuation surface of the concrete block, so as to facilitate the monitoring probe to shoot the deformation of the punctuation surface.

Description

Technical Field

[0001] The invention relates to the technical field of concrete quality monitoring, in particular to a concrete pressure quality monitoring device for road construction. Background Art

[0002] Under normal circumstances, concrete will reach its service strength after 28 days of drying. During the drying process, concrete strength monitoring is required to determine whether the concrete quality is qualified based on the monitoring data. Generally, the quality of concrete is monitored by using digital image correlation method, which can not only measure the deformation of the entire plane but also measure the changes of the entire specimen in three dimensions.

[0003] When monitoring the pressure of concrete, the monitoring surface needs to be sprayed and then the monitoring probe is installed. However, when placing the concrete block, it is very easy to cause the concrete block and the monitoring probe to tilt, which will affect the monitoring effect. At the same time, when spraying the monitoring surface, the spraying points are generally processed with a marker pen, but this process is relatively cumbersome, which affects the monitoring efficiency. Summary of the invention

[0004] The purpose of the present invention is to provide a concrete pressure quality monitoring device for road construction in order to solve the problem that it takes a long time to monitor the concrete blocks and it is impossible to quickly align and correct the concrete blocks and monitoring probes.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a concrete pressure quality monitoring device for road construction, comprising a support frame, a side connecting frame is installed on one side of the support frame, a probe mounting seat is installed on the top of the side connecting frame, a parallel connecting plate is rotatably connected to the top of the support frame through a rotating shaft, a support pallet is installed on the side of the parallel connecting plate away from the probe mounting seat, a V-shaped frame rod located above the side connecting frame is installed on one side of the support frame, a spray marking member is installed on the side of the V-shaped frame rod away from the support frame, a locking bolt located above the support pallet is provided on the top of the parallel connecting plate, an alignment correction member is installed on the parallel connecting plate, and a telescopic cylinder located below the support pallet is installed on the inner side of the support frame.

[0006] As a further solution of the present invention: the number of the support plates is two, and the two support plates are symmetrically arranged along the vertical center axis of the parallel connecting plate, and rollers are arranged on the top of the support plates.

[0007] As a further solution of the present invention: the alignment correction part includes a viewing position through groove opened on the parallel connecting plate, and four third piston cylinders are installed on the side of the parallel connecting plate away from the supporting plate, two third piston cylinders form a group, and the two groups of third piston cylinders are symmetrically arranged along the vertical center axis of the viewing position through groove, the interior of the third piston cylinder is inserted with a second piston rod that penetrates the parallel connecting plate, and the end of the third piston cylinder away from the second piston rod is installed with a flow tube, the bottom of the parallel connecting plate is fixedly installed with a bottom plate, and one side of the bottom plate is installed with a second piston cylinder located below the parallel connecting plate, and the interior of the second piston cylinder is inserted with a first piston rod extending to the outside of the second piston cylinder, and the first piston rod is inserted into the interior of the second piston cylinder. The plug rod is provided with a first return spring connected to the second piston cylinder, one end of the first piston rod is fixed with a locking rod located below the second piston cylinder and passing through the bottom plate, a limiting hole is provided on the support frame, the locking rod passes through the bottom plate and the limiting hole, a flow tube connected to the second piston cylinder is installed at one end of the third piston cylinder away from the parallel connecting plate, a straight guide rail is installed on the rotating shaft connecting the parallel connecting plate and the support frame, a shifting pin is slidably connected to the inner side of the straight guide rail, a U-shaped connecting frame is installed at one end of the shifting pin, a liquid storage bin is installed at the bottom of the U-shaped connecting frame, a plug block is slidably connected to the inner wall of the liquid storage bin, and the output end of the telescopic cylinder passes through the U-shaped connecting frame, the liquid storage bin and the plug block are connected.

[0008] As a further solution of the present invention: the internal volume of the second piston cylinder is twice the internal volume of the third piston cylinder.

[0009] As a further solution of the present invention: the angle between the supporting plate and the parallel connecting plate is ninety degrees.

[0010] As a further solution of the present invention: the liquid spraying marking member includes a first piston cylinder installed on a side of the positioning plate away from the support frame, a hose connected to the liquid storage bin is provided on the first piston cylinder, a third piston rod extending to the outside of the first piston cylinder is inserted inside the first piston cylinder, one end of the third piston rod is connected to a positioning connecting plate located at one end of the positioning plate close to the support frame, a fourth piston rod is provided on the positioning connecting plate, a liquid introduction bin is sleeved on the outer side of the fourth piston rod, a guide shift rod located on both sides of the fourth piston rod is provided on the positioning connecting plate, the outer wall of the liquid introduction bin is slidably connected to the guide shift rod, the outer wall of the liquid introduction bin is provided with a second return spring connected to the guide shift rod, a second one-way valve is installed at the bottom of the liquid introduction bin, the second one-way valve is connected to an external paint liquid storage bin, a first one-way valve is installed on the top of the liquid introduction bin, a liquid spraying bin is installed on the top of the first one-way valve, a plurality of paint spraying pipes are provided on the liquid spraying bin, and a blocking plate that fits the liquid spraying bin is provided on the top of the positioning plate.

[0011] As a further solution of the present invention: a notch matched with the oblique connecting plate is formed on the positioning plate, and two ends of the oblique connecting plate are connected to the positioning connecting plate and the third piston rod through a rotating shaft.

[0012] As a further solution of the present invention: the liquid discharge port of the first one-way valve is connected to the liquid introduction tank, and the liquid inlet of the second one-way valve is connected to the liquid introduction tank.

[0013] As a further solution of the present invention: when the parallel connecting plates are in an inclined state, the inclination angle thereof is equal to the inclination angle of the liquid spraying bin.

[0014] As a further solution of the present invention: the length and width of the liquid spraying bin are both greater than the length and width of the viewing slot.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. By setting the alignment correction piece, when the concrete block is placed on the support plate, if the locking rod and the limiting hole are not separated, it means that one side of the concrete block is not completely in contact with the parallel connecting plate. At this time, the position of the concrete block needs to be adjusted. When one side of the concrete block is completely in contact with the parallel connecting plate, the locking rod and the limiting hole are completely separated, and the telescopic cylinder is started. The plug is moved relative to the liquid storage bin by extending the telescopic cylinder. When the plug moves to the bottom of the inner wall of the liquid storage bin, the telescopic cylinder continues to extend so that the plug drives the liquid storage bin to move, so that the U-shaped connecting frame pulls the straight guide rail through the shifting pin, so that the punctuation surface on the concrete block can be directed toward the monitoring probe, so that the monitoring probe is parallel to the punctuation surface of the concrete block, which is convenient for the monitoring probe to shoot the deformation of the punctuation surface;

[0017] 2. By setting a liquid spraying marking part, when the telescopic cylinder is extended, the plug block first moves along the inner wall of the liquid storage bin, and the aqueous solution inside the liquid storage bin will enter the first piston cylinder through the hose, so that the third piston rod pushes the oblique connecting plate, and the oblique connecting plate will swing relative to the third piston rod, so that the positioning connecting plate drives the liquid spraying bin to move, and when the liquid spraying bin is fitted with the parallel connecting plate, the positioning connecting plate continues to move, and the positioning connecting plate will move relative to the liquid introduction bin, so that the paint inside the liquid introduction bin is discharged through the first one-way valve and the paint spraying bin by the paint spraying pipe, so as to punctuate the concrete block, thereby improving the punctuation efficiency and further improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 is a side view of the present invention;

[0020] Figure 3It is a schematic diagram of the connection between the parallel connecting plate and the bottom plate of the present invention;

[0021] Figure 4 It is a schematic diagram of the connection between the second piston cylinder and the third piston cylinder of the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the liquid spraying marking member of the present invention;

[0023] Figure 6 It is a schematic diagram of the connection between the first piston cylinder and the fourth piston rod of the present invention;

[0024] Figure 7 It is a schematic diagram of the internal structure of the liquid introduction bin of the present invention;

[0025] Figure 8 It is a schematic diagram of the internal structure of the liquid storage bin of the present invention.

[0026] In the figure: 1, support frame; 2, side connecting frame; 3, probe mounting seat; 4, parallel connecting plate; 501, support plate; 502, locking bolt; 503, positioning plate; 504, first piston cylinder; 505, hose; 506, liquid storage tank; 507, U-shaped connecting frame; 508, V-shaped frame rod; 509, locking rod; 510, limiting hole; 511, spray tank; 512, viewing slot; 513, telescopic cylinder; 514, shifting pin; 515, straight guide rail; 516, first piston rod ; 517, second piston cylinder; 518, bottom plate; 519, flow pipe; 520, third piston cylinder; 521, second piston rod; 522, first return spring; 523, paint spray pipe; 524, first one-way valve; 525, second one-way valve; 526, second return spring; 527, guide shift rod; 528, third piston rod; 529, oblique connecting plate; 530, blocking connecting plate; 531, blocking plate; 532, liquid guide tank; 533, fourth piston rod; 534, plug. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0029] See also Figures 1 to 8 In an embodiment of the present invention, a concrete pressure quality monitoring device for road construction includes a support frame 1, a side connecting frame 2 is installed on one side of the support frame 1, a probe mounting seat 3 is installed on the top of the side connecting frame 2, a parallel connecting plate 4 is rotatably connected to the top of the support frame 1 through a rotating shaft, a support support plate 501 is installed on the side of the parallel connecting plate 4 away from the probe mounting seat 3, a V-shaped frame rod 508 located above the side connecting frame 2 is installed on one side of the support frame 1, a spray marking part is installed on the side of the V-shaped frame rod 508 away from the support frame 1, a locking bolt 502 located above the support support plate 501 is arranged on the top of the parallel connecting plate 4, an alignment correction part is installed on the parallel connecting plate 4, and a telescopic cylinder 513 located below the support support plate 501 is installed on the inner side of the support frame 1.

[0030] In this embodiment, when monitoring the pressure quality of the concrete block, the monitoring probe is first installed on the top of the probe mounting seat 3, and then the manufactured concrete block is placed on the support plate 501. Since the support plate 501 is in an inclined state, the concrete block on the support plate 501 will move down along the support plate 501 at this time, so that one side of the concrete block is in contact with the parallel connecting plate 4. When the parallel connecting plate 4 and one side of the concrete block are in a parallel state, the locking bolt 502 is turned to position the concrete block on the support plate 501 through the locking bolt 502, and then the locking bolt 502 is started. The telescopic cylinder 513 is moved. Through the operation of the telescopic cylinder 513, the liquid spraying marking part first performs marking processing on the concrete block. Then, as the telescopic cylinder 513 extends, the alignment correction part drives the supporting plate 501 to swing, so that the marking surface of the concrete block is flush with the monitoring probe. Then, the top of the concrete block is pressed by the external cylinder, and the image of the marking surface of the concrete block is collected by the monitoring probe. After the collection is completed, the surface image of the concrete block collected for a long time is analyzed by using the corresponding image analysis software to obtain the deformation of the longitudinal displacement of the concrete under the continuous load.

[0031] Please refer to Figure 1 , Figure 2 There are two supporting plates 501 , and the two supporting plates 501 are symmetrically arranged along the vertical center axis of the parallel connecting plate 4 , and rollers are arranged on the tops of the supporting plates 501 .

[0032] In this embodiment, by providing this structure, the support plate 501 supports both ends of the concrete block, and at the same time, the friction between the support plate 501 and the concrete block is reduced.

[0033] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 8The alignment correction part includes a viewing position through groove 512 opened on the parallel connecting plate 4, and four third piston cylinders 520 are installed on the side of the parallel connecting plate 4 away from the supporting plate 501. Two third piston cylinders 520 form a group, and the two groups of third piston cylinders 520 are symmetrically arranged along the vertical center axis of the viewing position through groove 512. The interior of the third piston cylinder 520 is plugged with a second piston rod 521 that penetrates the parallel connecting plate 4, and the end of the third piston cylinder 520 away from the second piston rod 521 is installed with a flow pipe 519, and a bottom plate 518 is fixedly installed at the bottom of the parallel connecting plate 4, and a second piston cylinder 517 located below the parallel connecting plate 4 is installed on one side of the bottom plate 518, and the interior of the second piston cylinder 517 is plugged with a first piston rod 516 extending to the outside of the second piston cylinder 517, and the first piston rod 516 is provided with a through pipe 519 that is aligned with the second piston cylinder 517. The parallel connecting plate 4 is connected to the support frame 1 by a first return spring 522, one end of the first piston rod 516 is fixed with a locking rod 509 located below the second piston cylinder 517 and passing through the bottom plate 518, a limiting hole 510 is provided on the support frame 1, the locking rod 509 passes through the bottom plate 518 and the limiting hole 510, and the end of the third piston cylinder 520 away from the parallel connecting plate 4 is provided with a flow pipe 519 connected to the second piston cylinder 517, a straight guide rail 515 is installed on the rotating shaft connecting the parallel connecting plate 4 and the support frame 1, and a shifting pin 514 is slidably connected to the inner side of the straight guide rail 515, and a U-shaped connecting frame 507 is installed at one end of the shifting pin 514, a liquid storage bin 506 is installed at the bottom of the U-shaped connecting frame 507, and a plug 534 is slidably connected to the inner wall of the liquid storage bin 506, and the output end of the telescopic cylinder 513 passes through the U-shaped connecting frame 507, the liquid storage bin 506 and the plug 534 are connected.

[0034] In this embodiment, when the concrete block is placed on the supporting plate 501, the concrete block will slide toward the parallel connecting plate 4 under the action of its own gravity. When one side of the concrete block is in contact with the parallel connecting plate 4, the second piston rod 521 will be squeezed. At this time, the aqueous solution inside the third piston cylinder 520 will pass through the flow pipe 519 and enter the second piston cylinder 517 due to the push of the second piston rod 521. At this time, the first piston rod 516 will move toward the vertical central axis of the parallel connecting plate 4. At this time, the locking rod 509 will move with the first piston rod 516. When one side of the concrete block is completely in contact with the parallel connecting plate 4, the four second piston rods 521 will be completely retracted, so that the locking rod 509 can be completely separated from the limiting hole 510, and the locking rod 509 can be completely separated from the limiting hole 510. If the locking rod 509 is not separated from the limiting hole 510, it means that one side of the concrete block is not completely in contact with the parallel connecting plate 4. In this case, the position of the concrete block needs to be adjusted. When the locking rod 509 is separated from the limiting hole 510, the telescopic cylinder 513 is started, and the plug 534 is moved relative to the liquid storage bin 506 by extending the telescopic cylinder 513. When the plug 534 moves to the bottom of the inner wall of the liquid storage bin 506, the telescopic cylinder 513 continues to extend so that the plug 534 drives the liquid storage bin 506 to move, so that the U-shaped connecting frame 507 pulls the straight guide rail 515 through the shifting pin 514, so that the punctuation surface on the concrete block can be turned toward the monitoring probe, so that the monitoring probe is parallel to the punctuation surface of the concrete block, thereby facilitating the monitoring probe to shoot the deformation of the punctuation surface.

[0035] Please refer to Figure 4 , the internal volume of the second piston cylinder 517 is twice the internal volume of the third piston cylinder 520 .

[0036] In this embodiment, this structure is provided to ensure that the locking rod 509 is separated from the limiting hole 510 when the aqueous solution inside the third piston cylinder 520 completely enters the second piston cylinder 517, thereby preventing the parallel connecting plate 4 from rotating when the concrete block is not completely in contact with the parallel connecting plate 4.

[0037] Please refer to Figure 1 , Figure 2 The included angle between the supporting plate 501 and the parallel connecting plate 4 is ninety degrees.

[0038] In this embodiment, by setting this structure, when the support plate 501 is turned to a horizontal state, the monitoring probe is flush with the concrete block, so that the monitoring probe can photograph the marked concrete block surface through the viewing slot 512.

[0039] Please refer to Figure 1 , Figure 2 , Figure 5 , Figure 6 , Figure 7 , Figure 8The liquid spraying marking member includes a first piston cylinder 504 installed on the side of the positioning plate 503 away from the support frame 1, and a hose 505 connected to the liquid storage tank 506 is arranged on the first piston cylinder 504. A third piston rod 528 extending to the outside of the first piston cylinder 504 is inserted into the interior of the first piston cylinder 504, and one end of the third piston rod 528 is connected to a positioning connecting plate 530 located at one end of the positioning plate 503 close to the support frame 1, and a fourth piston rod 533 is arranged on the positioning connecting plate 530, and a liquid introduction tank 532 is sleeved on the outer side of the fourth piston rod 533, and a third piston rod 533 is arranged on the positioning connecting plate 530. 3, the outer wall of the liquid introducing bin 532 is slidably connected to the guide shift rod 527, the outer wall of the liquid introducing bin 532 is provided with a second return spring 526 connected to the guide shift rod 527, the bottom of the liquid introducing bin 532 is provided with a second one-way valve 525, the second one-way valve 525 is connected to the external paint liquid storage bin, the top of the liquid introducing bin 532 is provided with a first one-way valve 524, the top of the first one-way valve 524 is provided with a liquid spraying bin 511, a plurality of paint spraying pipes 523 are provided on the liquid spraying bin 511, and the top of the positioning plate 503 is provided with a blocking plate 531 which is in contact with the liquid spraying bin 511.

[0040] In this embodiment, when the telescopic cylinder 513 is extended, the plug 534 first moves along the inner wall of the liquid storage bin 506. At this time, the aqueous solution inside the liquid storage bin 506 will enter the first piston cylinder 504 through the hose 505, so that the third piston rod 528 pushes the oblique connecting plate 529. At this time, the oblique connecting plate 529 will swing relative to the third piston rod 528, so that the positioning connecting plate 530 drives the liquid spraying bin 511 to move. When the liquid spraying bin 511 is in contact with the parallel connecting plate 4, the positioning connecting plate 530 continues to move. When the parallel connecting plate 4 is turned to the vertical state, the second return spring 526 is restored, and at the same time, the paint in the external paint storage bin will enter the liquid introducing bin 532 through the second one-way valve 525, so as to facilitate the subsequent marking of concrete blocks.

[0041] Please refer to Figure 5 The positioning plate 503 is provided with a slot that matches the oblique connecting plate 529 , and both ends of the oblique connecting plate 529 are connected to the positioning connecting plate 530 and the third piston rod 528 through a rotating shaft.

[0042] In this embodiment, this structure is provided to enable the third piston rod 528 to move relative to the first piston cylinder 504 by squeezing the oblique connecting plate 529 to drive the liquid introduction chamber 532 to move, so that the liquid spray chamber 511 is first fitted with the parallel connecting plate 4 and then the paint spray tube 523 sprays paint.

[0043] Please refer to Figure 5 The liquid discharge port of the first one-way valve 524 is connected to the liquid introduction tank 532 , and the liquid inlet of the second one-way valve 525 is connected to the liquid introduction tank 532 .

[0044] In this embodiment, this structure is provided to enable the paint inside the liquid introduction tank 532 to flow in one direction.

[0045] Please refer to Figure 1 , Figure 2 , Figure 5 When the parallel connecting plate 4 is in an inclined state, its inclination angle is equal to the inclination angle of the spraying tank 511.

[0046] In this embodiment, this structure is provided to make the distance between each paint spraying pipe 523 on the spraying liquid tank 511 and the concrete block equal, thereby improving the uniformity of the paint spraying mark.

[0047] Please refer to Figure 1 , Figure 5 The length and width of the liquid spraying bin 511 are both greater than the length and width of the viewing slot 512.

[0048] In this embodiment, this structure is provided to prevent the liquid spraying chamber 511 from entering the inner side of the viewing slot 512 during the movement.

[0049] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A concrete pressure quality monitoring device for road construction, comprising a support frame (1), characterized in that: A side connecting frame (2) is installed on one side of the support frame (1), a probe mounting seat (3) is installed on the top of the side connecting frame (2), a parallel connecting plate (4) is rotatably connected to the top of the support frame (1) via a rotating shaft, a support support plate (501) is installed on the side of the parallel connecting plate (4) away from the probe mounting seat (3), a V-shaped frame rod (508) located above the side connecting frame (2) is installed on one side of the support frame (1), a liquid spraying marking member is installed on the side of the V-shaped frame rod (508) away from the support frame (1), a locking bolt (502) located above the support support plate (501) is arranged on the top of the parallel connecting plate (4), an alignment correction member is installed on the parallel connecting plate (4), and a telescopic cylinder (513) located below the support support plate (501) is installed on the inner side of the support frame (1); The alignment correction member comprises a position-observing slot (512) provided on the parallel connecting plate (4); four third piston cylinders (520) are installed on the side of the parallel connecting plate (4) away from the supporting plate (501); two third piston cylinders (520) form a group; the two groups of third piston cylinders (520) are symmetrically arranged along the vertical center axis of the position-observing slot (512); a second piston rod (521) penetrating the parallel connecting plate (4) is inserted into the interior of the third piston cylinder (520); 20) A flow tube (519) is installed at one end away from the second piston rod (521), a bottom plate (518) is fixedly installed at the bottom of the parallel connecting plate (4), a second piston cylinder (517) located below the parallel connecting plate (4) is installed on one side of the bottom plate (518), a first piston rod (516) extending to the outside of the second piston cylinder (517) is inserted into the interior of the second piston cylinder (517), and a first reset spring connected to the second piston cylinder (517) is provided on the first piston rod (516). A spring (522) is provided at one end of the first piston rod (516), a locking rod (509) located below the second piston cylinder (517) and penetrating the bottom plate (518) is fixed thereto, a limiting hole (510) is provided on the support frame (1), the locking rod (509) penetrates the bottom plate (518) and the limiting hole (510), and a flow pipe (519) connected to the second piston cylinder (517) is installed at one end of the third piston cylinder (520) away from the parallel connecting plate (4), and the parallel connecting plate (4) and the support frame ( 1) A straight guide rail (515) is installed on the connected rotating shaft, a shift pin (514) is slidably connected to the inner side of the straight guide rail (515), a U-shaped connecting frame (507) is installed on one end of the shift pin (514), a liquid storage bin (506) is installed at the bottom of the U-shaped connecting frame (507), a plug block (534) is slidably connected to the inner wall of the liquid storage bin (506), and an output end of the telescopic cylinder (513) passes through the U-shaped connecting frame (507), the liquid storage bin (506) and is connected to the plug block (534); The liquid spraying marking member comprises a first piston cylinder (504) mounted on a side of the positioning plate (503) away from the support frame (1); the first piston cylinder (504) is provided with a hose (505) connected to the liquid storage bin (506); the interior of the first piston cylinder (504) is plugged with a third piston rod (528) extending to the outside of the first piston cylinder (504); one end of the third piston rod (528) is connected to a positioning connecting plate (530) located at an end of the positioning plate (503) close to the support frame (1); a fourth piston rod (533) is provided on the positioning connecting plate (530); the outer side of the fourth piston rod (533) is sleeved with a liquid introduction bin (532); the positioning connecting plate (530) is provided with a third piston rod (528) located at the outer side of the fourth piston rod (533); 3) guide shift rods (527) on both sides, the outer wall of the liquid introduction bin (532) is slidably connected to the guide shift rods (527), the outer wall of the liquid introduction bin (532) is provided with a second return spring (526) connected to the guide shift rod (527), the bottom of the liquid introduction bin (532) is provided with a second one-way valve (525), the second one-way valve (525) is connected to an external paint liquid storage bin, the top of the liquid introduction bin (532) is provided with a first one-way valve (524), the top of the first one-way valve (524) is provided with a liquid spray bin (511), a plurality of paint spray pipes (523) are provided on the liquid spray bin (511), and the top of the positioning plate (503) is provided with a blocking plate (531) that fits the liquid spray bin (511).

2. A concrete pressure quality monitoring device for road construction according to claim 1, characterized in that: The number of the supporting plates (501) is two, and the two supporting plates (501) are symmetrically arranged along the vertical center axis of the parallel connecting plate (4), and a roller is arranged on the top of the supporting plate (501).

3. A concrete pressure quality monitoring device for road construction according to claim 2, characterized in that: The internal volume of the second piston cylinder (517) is twice the internal volume of the third piston cylinder (520).

4. A concrete pressure quality monitoring device for road construction according to claim 1, characterized in that: The included angle between the supporting plate (501) and the parallel connecting plate (4) is ninety degrees.

5. A concrete pressure quality monitoring device for road construction according to claim 1, characterized in that: The positioning plate (503) is provided with a notch that fits with the oblique connecting plate (529), and the two ends of the oblique connecting plate (529) are connected to the locking connecting plate (530) and the third piston rod (528) via a rotating shaft.

6. A concrete pressure quality monitoring device for road construction according to claim 5, characterized in that: The liquid discharge port of the first one-way valve (524) is connected to the liquid introduction tank (532), and the liquid inlet port of the second one-way valve (525) is connected to the liquid introduction tank (532).

7. A concrete pressure quality monitoring device for road construction according to claim 6, characterized in that: When the parallel connecting plate (4) is in an inclined state, its inclination angle is equal to the inclination angle of the liquid spraying bin (511).

8. A concrete pressure quality monitoring device for road construction according to claim 7, characterized in that: The length and width of the liquid spraying bin (511) are both greater than the length and width of the viewing slot (512).

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