Floor flatness detection mechanism for constructional engineering

Abstract

The invention relates to the technical field of flatness detection equipment, discloses a floor flatness detection mechanism for constructional engineering, and aims to solve the problem that a detection mechanism cannot be normally used due to abrasion of an identification mechanism. Through the arrangement of the material containing cavity, the liquid injection nozzle and the sliding block, when the detection wheel passes through the uneven position of the terrace, the detection wheel can synchronously move up and down, then the sliding block is driven to move, the liquid injection nozzle is intermittently communicated with the material containing cavity, and part of pigment in the material containing cavity falls onto the terrace; and the liquid injection nozzle does not make contact with the floor, the identification function can be achieved, and then the service life of the identification mechanism is prolonged.

Description

Technical Field

[0001] This application relates to the technical field of flatness detection equipment, and particularly to a floor flatness detection mechanism for construction projects. Background Art

[0002] A floor refers to the construction and treatment of the ground using specific materials and processes, making the ground exhibit certain decorative and functional properties. After the floor construction is completed, a detection mechanism is required to detect the flatness of the floor, thereby judging the construction quality of the floor.

[0003] Some existing detection mechanisms, such as a diamond abrasive wear-resistant floor flatness detection device disclosed in the authorized announcement number CN118424083B, mainly consists of a support plate, support legs, detection wheels, and a paintbrush. When in use, the staff pushes the support legs, detection wheels, and paintbrush to move through the support plate, and makes the detection wheels contact the floor. When the detection wheels contact uneven positions on the floor, they will move up and down accordingly, driving the paintbrush to contact the floor downward and draw marks on the floor. Through the above actions, the function of detecting and marking uneven positions on the floor is realized.

[0004] However, in the above process, when the paintbrush contacts the floor, the detection wheels still drive the paintbrush to continue moving forward. After a period of time, the end of the paintbrush is prone to wear, thus affecting the normal use of the detection mechanism. Summary of the Invention

[0005] This application proposes a floor flatness detection mechanism for construction projects, which has the advantage of improving the service life of the marking mechanism, and is used to solve the problem that the detection mechanism cannot be used normally due to the wear of the marking mechanism.

[0006] To achieve the above object, this application adopts the following technical solution: A floor flatness detection mechanism for construction projects, comprising: a push plate, support legs are fixedly installed at the four corners of the lower side of the push plate, a telescopic member is fixedly installed at the middle position of the lower side of the push plate, the telescopic member consists of a fixed shell, a mounting member, and a first spring. The fixed shell is fixedly installed on the lower side of the push plate, the upper end of the mounting member forms a sliding connection with the inner cavity of the fixed shell, a first spring is arranged in the inner cavity of the fixed shell, and the two ends of the first spring are respectively fixedly connected to the lower side of the push plate and the upper side of the mounting member. A detection wheel is rotatably installed on the lower side of the mounting member, and the detection wheel contacts the floor. The interior of the mounting member is provided with a material storage cavity for accommodating liquid pigment. An inlet hole is provided in the upper part of the material storage cavity inside the mounting member. The inlet hole communicates the external environment with the material storage cavity. A liquid injection nozzle is provided on one side of the detection wheel. There is a gap between the lower end of the liquid injection nozzle and the floor. An outlet mechanism is provided inside the telescopic member. The outlet mechanism controls the liquid pigment in the material storage cavity to be discharged from the liquid injection nozzle onto the floor. A control mechanism is provided inside the mounting member. The control mechanism is connected to the outlet mechanism and is used to move in the opposite direction to the detection wheel, thereby controlling the operation and stop of the outlet mechanism.

[0007] Further, the control mechanism includes a lifting groove, a lifting member, a second spring and a connecting channel. A lifting groove is provided at the upper side position inside the mounting member. The lifting member is hermetically and slidably installed inside the lifting groove. There is a gap between the lower end of the lifting member and the bottom wall of the lifting groove. A second spring is provided above the lifting member. The two ends of the second spring are respectively fixedly connected to the upper side surface of the lifting member and the lower side surface of the push plate. A connecting channel is provided below the lifting groove. The lifting groove is communicated with the outlet mechanism through the connecting channel.

[0008] Further, the outlet mechanism includes an outlet hole, a sliding cavity, a sliding block and a first through hole. An outlet hole is jointly communicated inside the mounting member and inside the liquid injection nozzle. The outlet hole communicates the external environment with the material storage cavity. A sliding cavity is communicated in the middle position of the outlet hole inside the mounting member. A sliding block is hermetically and slidably installed in the sliding cavity. First through holes are longitudinally provided on both sides of the sliding block. There are spaces on both sides of the sliding block in the sliding cavity. An air vent hole is provided at the lower position of the mounting member on one side of the space. The air vent hole communicates the external environment with the space on that side. A connecting channel is provided at the lower position of the mounting member inside the lifting groove. The two ends of the connecting channel are respectively communicated with the lifting groove and the space on the side of the sliding block facing away from the air vent hole in the sliding cavity. The cavity connected by the lifting groove and the sliding cavity through the connecting channel is filled with gas.

[0009] Furthermore, the liquid outlet mechanism includes a liquid outlet hole, a sliding cavity, a sliding block, a first through hole, an extension plate, an upper cavity and a lower cavity. An extension plate is fixedly installed on the lower side of the mounting member and on one side of the detection wheel. The material containing cavity is divided into an upper cavity and a lower cavity. The upper cavity is formed inside the mounting member, and the lower cavity is formed inside both the mounting member and the extension plate. The cross-sectional area of the lower cavity is smaller than that of the upper cavity. The upper port of the lower cavity is opened on the bottom surface of the upper cavity. The liquid injection nozzle is fixedly installed on the lower side surface of the extension plate. A liquid outlet hole is jointly formed by communicating the inside of the extension plate and the inside of the liquid injection nozzle. The liquid outlet hole communicates the external environment with the lower cavity. A sliding cavity is formed by communicating the inside of the extension plate and at the middle position of the liquid outlet hole. A sliding block is hermetically and slidably installed in the sliding cavity. First through holes are longitudinally formed through both sides of the sliding block. Spaces exist on both sides of the sliding block in the sliding cavity. An air vent hole is formed in the extension plate and at the lower position of one side space. The air vent hole communicates the external environment with this side space. A connection channel is jointly formed by communicating the inside of the mounting member and the inside of the extension plate. The two ends of the connection channel are respectively communicated with the lifting groove and the space in the sliding cavity on the side of the sliding block facing away from the air vent hole. The cavity connected by the lifting groove and the sliding cavity through the connection channel is filled with hydraulic oil.

[0010] Furthermore, the bottom surface of the upper cavity is inclined, and the lowest point of the inclined position of the bottom surface of the upper cavity corresponds to the upper port of the lower cavity.

[0011] Furthermore, a distribution chamber is fixedly installed in the upper cavity. The cavity of the distribution chamber is close to the liquid inlet hole. There is a distance between the side wall of the distribution chamber and the side wall of the upper cavity in the corresponding direction. A feeding mechanism is arranged in the distribution chamber. The feeding mechanism is connected to the lifting member, and the up and down movement of the lifting member is used to control the feeding mechanism to supplement liquid pigment to the lower cavity.

[0012] Furthermore, the feeding mechanism includes a second through hole, a first sliding groove, a sliding rod, a special-shaped hole, a second sliding groove and a connecting rod. The bottom wall of the distribution chamber is provided with a second through hole, and the second through hole communicates with the inner cavity of the distribution chamber and the material storage cavity. A first sliding groove is provided inside the mounting member and above the material storage cavity. A sliding rod is arranged in the cavity of the distribution chamber. The upper end of the sliding rod is slidably connected with the first sliding groove. There is a distance between the upper end of the sliding rod and the top wall of the first sliding groove. The lower end of the sliding rod is slidably and sealingly connected with the second through hole. A special-shaped hole is provided at the lower side inside the sliding rod. The upper side end of the special-shaped hole communicates with the cavity of the distribution chamber. The lower side end of the special-shaped hole is opened on the circumferential side surface of the sliding rod and is closed by the bottom wall of the distribution chamber. A second sliding groove is communicated and opened inside the mounting member and between the first sliding groove and the lifting groove. A connecting rod is slidably installed in the second sliding groove. The two ends of the connecting rod are respectively fixedly connected with the sliding rod and the lifting member. There are distances between the connecting rod and the upper and lower inner walls of the second sliding groove.

[0013] Furthermore, a fixing plate is longitudinally and equidistantly slidably installed in the cavity of the distribution chamber. Through holes are equidistantly provided inside the fixing plate. The fixing plate is fixedly connected with the sliding rod.

[0014] Furthermore, the lower side end of the special-shaped hole faces the side wall of the material storage cavity.

[0015] The present application has the following beneficial effects: A floor flatness detection mechanism for construction engineering provided by the present application, through the settings of the material storage cavity, the liquid injection nozzle and the slider, when the detection wheel passes through the uneven position of the floor, it will move up and down synchronously, and then drive the slider to move, so that the liquid injection nozzle intermittently communicates with the material storage cavity, so that part of the pigment in the material storage cavity falls onto the floor. Since the relative position between the liquid injection nozzle and the detection wheel remains unchanged all the time, and the liquid injection nozzle does not contact the floor, the marking function can be realized, and thus the service life of the marking mechanism is improved.

[0016] Through the settings of the material storage cavity, the distribution chamber and the sliding rod, the distribution chamber is used to collect part of the pigment in the material storage cavity, so that only part of the pigment remains at the bottom of the material storage cavity. Then, during the up and down movement of the above detection wheel, the sliding rod moves in the opposite direction in the distribution chamber, so that part of the pigment in the distribution chamber is intermittently replenished into the material storage cavity. Since only a pigment layer with a lower liquid level height exists in the cavity of the material storage cavity communicating with the liquid injection nozzle during the above process, when this part of the pigment is discharged from the liquid injection nozzle to the floor, the impact force is lower, which further promotes the pigment to be marked more clearly and concentratedly, and improves the marking effect.

[0017] Through the arrangement of the sliding rod and the fixed plate, during the movement of the above-mentioned sliding rod, the fixed plate will be driven to move synchronously, so that the fixed plate with a through hole inside will stir the pigment in the distribution chamber, promoting the uniformity of the pigment concentration. When the pigment is discharged to the floor from the liquid injection nozzle later, the pigment marking will be clearer, improving the marking effect. At the same time, since the pigment concentration is mixed to a certain extent, when the pigment passes through the liquid injection nozzle, it is more likely to generate frictional resistance with the inner wall of the liquid injection nozzle. When the pigment is discharged to the floor from the liquid injection nozzle later, the impact force of the pigment is smaller, thus promoting the pigment marking to be clearer and more concentrated, improving the marking effect. Description of the Drawings

[0018] The drawings forming a part of the specification depict the embodiments disclosed in the present application and, together with the specification, are used to explain the principles disclosed in the present application.

[0019] Referring to the drawings, the present application can be more clearly understood according to the following detailed description, where: Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the internal structure of the telescopic member of the present invention; Figure 3 For the present invention Figure 2 is a partially enlarged schematic diagram of the structure at A in; Figure 4 For the present invention Figure 2 is a partially enlarged schematic diagram of the structure at B in; Figure 5 For the present invention Figure 2 is a partially enlarged schematic diagram of the structure at C in; Figure 6 is a schematic diagram of the special-shaped hole of the present invention; Figure 7 is a schematic diagram of the internal structure of the mounting member of the present invention.

[0020] In the figure: 1, push plate; 2, support leg; 3, telescopic member; 30, fixed shell; 31, mounting member; 32, first spring; 4, detection wheel; 5, material storage cavity; 50, upper cavity; 51, lower cavity; 6, liquid inlet hole; 7, liquid injection nozzle; 8, liquid outlet hole; 9, sliding cavity; 10, slider; 11, first through hole; 12, lifting groove; 13, lifting member; 14, second spring; 15, connecting channel; 16, extension plate; 17, distribution chamber; 18, second through hole; 19, first sliding groove; 20, sliding rod; 21, special-shaped hole; 22, second sliding groove; 23, connecting rod; 24, fixed plate. Detailed Embodiments

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts belong to the scope of protection of the present application.

[0022] Embodiment 1: Please refer to Figures 1 - 7, a floor flatness detection mechanism for construction engineering, including a push plate 1. Legs 2 are fixedly installed at the four corners of the lower side of the push plate 1. The lower ends of the legs 2 are rotatably installed with balls, and the legs 2 contact the floor through the balls. A telescopic member 3 is fixedly installed at the middle position of the lower side of the push plate 1. The telescopic member 3 is composed of a fixed shell 30, a mounting member 31 and a first spring 32. The fixed shell 30 is fixedly installed at the middle position of the lower side of the push plate 1. The mounting member 31 is located below the fixed shell 30. The upper end of the mounting member 31 forms a sliding connection with the inner cavity of the fixed shell 30. A first spring 32 is arranged in the inner cavity of the fixed shell 30. The upper end of the first spring 32 is fixedly connected to the lower side of the push plate 1, and the lower end of the first spring 32 is fixedly connected to the upper side of the mounting member 31. A detection wheel 4 is rotatably installed on the lower side of the mounting member 31, and the detection wheel 4 contacts the floor. A material storage cavity 5 is formed inside the mounting member 31 for accommodating a liquid pigment (such as lime water). A liquid inlet hole 6 is opened at the upper part of the mounting member 31 and located inside the material storage cavity 5. The liquid inlet hole 6 communicates with the external environment and the material storage cavity 5. A liquid injection nozzle 7 is fixedly installed at the lower side of the mounting member 31 and on one side of the detection wheel 4. There is a distance between the lower end of the liquid injection nozzle 7 and the floor. An outlet hole 8 is jointly communicated and opened inside the mounting member 31 and the inside of the liquid injection nozzle 7. The lower side of the outlet hole 8 communicates with the external environment, and the upper side of the outlet hole 8 communicates with the material storage cavity 5. A sliding cavity 9 is communicated and opened at the middle position of the inside of the mounting member 31 and located inside the outlet hole 8. A slider 10 is hermetically slidably installed in the sliding cavity 9. One-way through holes 11 are longitudinally opened on both sides of the slider 10. When the one-way through holes 11 coincide with the outlet hole 8, the liquid pigment in the material storage cavity 5 passes through the outlet hole 8 and the one-way through holes 11, and then falls onto the floor surface. In the initial state, the slider 10 closes the outlet hole 8, and there is space on both sides of the slider 10 in the sliding cavity 9. An air release hole is opened at the lower position of the inside of the mounting member 31 and located on one side of the space. The air release hole communicates with the external environment and the space on that side. A lifting groove 12 is opened at the upper side position inside the mounting member 31. The lifting groove 12 is located at a position away from the air release hole. A lifting member 13 is hermetically slidably installed in the lifting groove 12. There is a distance between the lower end of the lifting member 13 and the bottom wall of the lifting groove 12. A second spring 14 is arranged above the lifting member 13. The lower end of the second spring 14 is fixedly connected to the upper side of the lifting member 13, and the upper end of the second spring 14 extends out of the lifting groove 12 and is fixedly connected to the lower side of the push plate 1. A connection channel 15 is opened at the lower position of the inside of the mounting member 31 and located below the lifting groove 12. The upper end of the connection channel 15 communicates with the lifting groove 12, and the lower end of the connection channel 15 communicates with the space on the side of the slider 10 facing away from the air release hole in the sliding cavity 9. The cavity connected by the lifting groove 12 and the sliding cavity 9 through the connection channel 15 is filled with gas (or hydraulic oil).

[0023] In use, the staff drives the supporting legs 2 and the detection wheels 4 to move on the floor through the push plate 1. After that, when the detection wheels 4 pass through the raised positions on the floor, they will move upward and drive the mounting member 31 to squeeze the first spring 32. At the same time, the second spring 14 will squeeze the lifting member 13 downward, causing the lifting member 13 to squeeze the gas in the lifting groove 12, resulting in the gas squeezing the gas in the connecting channel 15 and the sliding cavity 9, and then causing the slider 10 to move in the direction close to the air vent hole. Finally, the first through hole 11 on one side of the slider 10 coincides with the liquid outlet hole 8, causing the liquid pigment in the material containing cavity 5 to be discharged from the liquid injection nozzle 7 onto the floor, thus realizing the function of marking uneven positions. After that, when the detection wheels 4 cross over the raised positions on the floor, the above-mentioned first spring 32 and second spring 14 reset, causing the corresponding structures to reset synchronously. When the detection wheels 4 pass through the sunken positions on the floor, they will move downward, and the first spring 32 will push the mounting member 31 to move downward synchronously. At the same time, the second spring 14 will pull the lifting member 13 upward, causing the lifting member 13 to suck the gas in the lifting groove 12, resulting in the gas driving the gas in the connecting channel 15 and the sliding cavity 9, and then causing the slider 10 to move in the direction away from the air vent hole. Finally, the first through hole 11 on one side of the slider 10 coincides with the liquid outlet hole 8, causing the liquid pigment in the material containing cavity 5 to be discharged from the liquid injection nozzle 7 onto the floor, thus realizing the function of marking uneven positions. After that, when the detection wheels 4 pass through the sunken positions on the floor, the above-mentioned first spring 32 and second spring 14 reset, causing the corresponding structures to reset synchronously. Since the relative positions of the liquid injection nozzle 7 and the detection wheels 4 remain unchanged all the time, and the liquid injection nozzle 7 does not contact the floor, the marking function can be realized, thereby improving the service life of the marking mechanism.

[0024] Embodiment 2: Please refer to Figures 1 - 7, this embodiment is a further improvement on Embodiment 1, and the improvement lies in that: an extension plate 16 is fixedly installed on the lower side of the mounting member 31 and on one side of the detection wheel 4. The material containing cavity 5 is divided into an upper cavity 50 and a lower cavity 51. The upper cavity 50 is opened inside the mounting member 31, and the lower cavity 51 is jointly opened inside the mounting member 31 and inside the extension plate 16. The cross-sectional area of the lower cavity 51 is smaller than that of the upper cavity 50. The upper port of the lower cavity 51 is opened on the bottom surface of the upper cavity 50. The bottom surface of the upper cavity 50 is inclined. The lowest point of the inclined position of the bottom surface of the upper cavity 50 corresponds to the upper port of the lower cavity 51. The liquid injection nozzle 7 is fixedly installed on the lower side surface of the extension plate 16. A liquid outlet hole 8 is jointly communicated and opened inside the extension plate 16 and inside the liquid injection nozzle 7. The lower side of the liquid outlet hole 8 is communicated with the external environment, and the upper side of the liquid outlet hole 8 is communicated with the lower cavity 51. A sliding cavity 9 is communicated and opened inside the extension plate 16 and at the middle position of the liquid outlet hole 8. A slider 10 is hermetically and slidably installed in the sliding cavity 9. One-way through holes 11 are longitudinally opened on both sides of the slider 10. When the one-way through holes 11 coincide with the liquid outlet hole 8, the liquid pigment in the lower cavity 51 passes through the liquid outlet hole 8 and the one-way through holes 11, and then falls onto the surface of the floor. In the initial state, the slider 10 closes the liquid outlet hole 8, and there are spaces on both sides of the slider 10 in the sliding cavity 9. An air vent hole is opened inside the extension plate 16 and at the lower position of one side space. The air vent hole communicates the external environment with this side space. A connection channel 15 is jointly communicated and opened inside the mounting member 31 and inside the extension plate 16. The upper end of the connection channel 15 is communicated with the lifting groove 12, and the lower end of the connection channel 15 is communicated with the space on the side of the slider 10 facing away from the air vent hole in the sliding cavity 9.

[0025] Since the cross-sectional area of the lower cavity 51 is smaller than that of the upper cavity 50, in subsequent use, the liquid pigment contained in the lower cavity 51 can be used up faster, thereby reducing the probability that the liquid pigment remains in the lower cavity 51 for a long time and causing precipitation and stratification of the liquid pigment, and making it less likely that the marking clarity of the liquid pigment is affected.

[0026] Please refer to Figures 1 - 7, a distribution chamber 17 is fixedly installed in the upper cavity 50. The cavity of the distribution chamber 17 is close to the liquid inlet hole 6. There is a spacing between the side wall of the distribution chamber 17 and the side wall of the upper cavity 50 in the corresponding direction. The lower cavity 51 and the part of the cavity of the upper cavity 50 below the distribution chamber 17 are both communicated with the liquid inlet hole 6 through this space. A second through hole 18 is penetrated and opened on the bottom wall of the distribution chamber 17. The second through hole 18 communicates the inner cavity of the distribution chamber 17 with the material containing cavity 5. An upper position of the inner part of the mounting member 31 and above the material containing cavity 5 is provided with a first sliding groove 19. A sliding rod 20 is arranged in the cavity of the distribution chamber 17. The upper end of the sliding rod 20 is slidably connected with the first sliding groove 19. There is a spacing between the upper end of the sliding rod 20 and the top wall of the first sliding groove 19. The lower end of the sliding rod 20 is hermetically slidably connected with the second through hole 18. An irregular hole 21 is opened at the lower side position inside the sliding rod 20. The upper side end of the irregular hole 21 is communicated with the cavity of the distribution chamber 17. The lower side end of the irregular hole 21 is opened on the circumferential side surface of the sliding rod 20 and is closed by the bottom wall of the distribution chamber 17. A second sliding groove 22 is communicated and opened at a position inside the mounting member 31 between the first sliding groove 19 and the lifting groove 12. A connecting rod 23 is slidably installed in the second sliding groove 22. One end of the connecting rod 23 extends into the first sliding groove 19 and is fixedly connected with the sliding rod 20. The other end of the connecting rod 23 extends into the lifting groove 12 and is fixedly connected with the lifting member 13. There are spacings between the connecting rod 23 and the upper and lower inner walls of the second sliding groove 22.

[0027] The distribution chamber 17 is used to hold the liquid pigment that should have been injected into the upper cavity 50. During the process of injecting the liquid pigment through the liquid inlet hole 6, when the liquid pigment in the distribution chamber 17 is full, the continuously injected liquid pigment will pass through the space between the distribution chamber 17 and the inner wall of the upper cavity 50 and then fall into the lower cavity 51. When the liquid pigment in the lower cavity 51 is full, the charging stops and the device starts to be used. After that, during the process of the above-mentioned detection wheel 4 moving up and down, the oppositely moving lifting member 13 drives the sliding rod 20 to move in the distribution chamber 17 through the connecting rod 23, so that part of the pigment in the distribution chamber 17 is intermittently replenished into the lower cavity 51 (when the sliding rod 20 moves up, the second through hole 18 is opened, so that part of the pigment in the distribution chamber 17 is replenished into the lower cavity 51 from the second through hole 18. When the sliding rod 20 moves down, the lower side end of the irregular hole 21 is opened, so that part of the pigment in the distribution chamber 17 is replenished into the lower cavity 51 from the irregular hole 21). Since only a pigment layer with a relatively low liquid level height exists in the lower cavity 51 during the above process, when this part of the pigment is discharged from the liquid injection nozzle 7 to the floor, the impact force is relatively low, which further promotes the pigment to be marked more clearly and concentratedly, improving the marking effect.

[0028] Embodiment 3: Please refer to Figures 1 - 7, This embodiment is a further improvement on Embodiment 2, and the improvement lies in that: a fixing plate 24 is longitudinally and equidistantly slidably installed in the cavity of the diversity chamber 17. Through holes are equidistantly opened inside the fixing plate 24, and the fixing plate 24 is fixedly connected to the sliding rod 20.

[0029] During the movement of the above-mentioned sliding rod 20, it will drive the fixing plate 24 to move synchronously, so that the fixing plate 24 with through holes inside will stir the pigment in the diversity chamber 17, promoting the uniformity of the pigment concentration. When it is subsequently discharged from the liquid injection nozzle 7 onto the floor, the pigment marking is clearer, improving the marking effect. At the same time, since the pigment concentration is mixed to a certain extent and the volume of the lower cavity 51 is small, the above-mentioned mixed pigment can be used faster. When the mixed pigment passes through the liquid outlet hole 8, it is more likely to generate frictional resistance with the inner wall of the liquid outlet hole 8, so that when the subsequent pigment is discharged from the liquid injection nozzle 7 onto the floor, the impact force of the pigment is smaller, thereby promoting the pigment marking to be clearer and more concentrated, improving the marking effect.

[0030] Embodiment 4: Please refer to Figures 1 - 7 , This embodiment is a further improvement on Embodiment 3, and the improvement lies in that: the lower end of the special-shaped hole 21 faces the side wall of the material-containing cavity 5 (the proportions of the structures in all the above embodiments are as shown in the figure, and can be adjusted accordingly according to specific situations in actual applications).

[0031] During the upward movement of the above-mentioned sliding rod 20 and the opening of the second through hole 18, the pigment in the diversity chamber 17 moves downward as a whole. At this time, the pigment above the fixing plate 24 is blocked by the fixing plate 24 and can only pass through the through hole. Through this action, the flow rate of the pigment discharged from the second through hole 18 is indirectly reduced, so that when this part of the pigment enters the lower cavity 51, it is not easy to generate a large impact force on the liquid in the lower cavity 51. Furthermore, when the pigment is discharged from the liquid injection nozzle 7 to the floor, the impact force is smaller, thereby promoting the pigment marking to be clearer and more concentrated, improving the marking effect. During the downward movement of the above-mentioned sliding rod 20 and the opening of the lower end of the special-shaped hole 21, the pigment discharged from the lower end of the special-shaped hole 21 is more likely to impact the side wall of the upper cavity 50 and then disperse and fall into the lower cavity 51. Through this action, when this part of the pigment enters the lower cavity 51, it is not easy to generate a large impact force on the liquid in the lower cavity 51. Furthermore, when the pigment is discharged from the liquid injection nozzle 7 to the floor, the impact force is smaller, thereby promoting the pigment marking to be clearer and more concentrated, improving the marking effect.

Claims

1. A floor flatness detection mechanism for construction projects, comprising: Pusher plate (1), legs (2) are fixedly installed at the four corners of the lower side of the pusher plate (1), and a telescopic member (3) is fixedly installed at the middle position of the lower side of the pusher plate (1). The telescopic member (3) is composed of a fixed shell (30), a mounting member (31) and a first spring (32). The fixed shell (30) is fixedly installed on the lower side of the pusher plate (1). The upper end of the mounting member (31) forms a sliding connection with the inner cavity of the fixed shell (30). A first spring (32) is arranged in the inner cavity of the fixed shell (30). The two ends of the first spring (32) are respectively fixedly connected to the lower side of the pusher plate (1) and the upper side of the mounting member (31). A detection wheel (4) is rotatably installed on the lower side of the mounting member (31), and the detection wheel (4) contacts the ground. It is characterized in that a material containing cavity (5) is formed inside the mounting member (31) for containing liquid pigment. A liquid inlet hole (6) is formed inside the mounting member (31) and at the upper position of the material containing cavity (5). The liquid inlet hole (6) communicates with the external environment and the material containing cavity (5). A liquid injection nozzle (7) is arranged at one side of the detection wheel (4). There is a distance between the lower end of the liquid injection nozzle (7) and the ground. A liquid outlet mechanism is arranged inside the telescopic member (3). The liquid outlet mechanism controls the liquid pigment in the material containing cavity (5) to be discharged from the liquid injection nozzle (7) onto the ground. A control mechanism is arranged inside the mounting member (31). The control mechanism is connected to the liquid outlet mechanism. The control mechanism moves in the opposite direction to the detection wheel (4) to control the operation and stop of the liquid outlet mechanism.

2. The floor flatness detection mechanism for construction engineering land according to claim 1, characterized in that, The control mechanism includes a lifting groove (12), a lifting member (13), a second spring (14) and a connection channel (15). A lifting groove (12) is formed at the upper side position inside the mounting member (31). A lifting member (13) is hermetically and slidably installed inside the lifting groove (12). There is a distance between the lower end of the lifting member (13) and the bottom wall of the lifting groove (12). A second spring (14) is arranged above the lifting member (13). The two ends of the second spring (14) are respectively fixedly connected to the upper side of the lifting member (13) and the lower side of the pusher plate (1). A connection channel (15) is arranged below the lifting groove (12). The lifting groove (12) communicates with the liquid outlet mechanism through the connection channel (15).

3. A floor flatness detection mechanism for construction engineering land according to claim 2, characterized in that, The liquid outlet mechanism includes a liquid outlet hole (8), a sliding cavity (9), a sliding block (10) and a first through hole (11). The interior of the mounting member (31) and the interior of the liquid injection nozzle (7) are jointly and communicatively provided with a liquid outlet hole (8). The liquid outlet hole (8) communicates with the external environment and the material containing cavity (5). The interior of the mounting member (31) and at the middle position of the liquid outlet hole (8) is communicatively provided with a sliding cavity (9). A sliding block (10) is hermetically and slidably mounted in the sliding cavity (9). First through holes (11) are longitudinally formed through both sides of the sliding block (10). Spaces exist on both sides of the sliding block (10) in the sliding cavity (9). A vent hole is provided in the interior of the mounting member (31) and at the lower position of one side space. The vent hole communicates with the external environment and the space on this side. A connecting channel (15) is provided in the interior of the mounting member (31) and at the lower position of the lifting groove (12). The two ends of the connecting channel (15) respectively communicate with the lifting groove (12) and the space in the sliding cavity (9) at the position of the sliding block (10) facing away from the vent hole. The cavity in which the lifting groove (12) is connected to the sliding cavity (9) through the connecting channel (15) is filled with gas.

4. The floor flatness detection mechanism for construction engineering land according to claim 2, characterized in that, The liquid outlet mechanism includes a liquid outlet hole (8), a sliding cavity (9), a sliding block (10), a first through hole (11), an extension plate (16), an upper cavity (50) and a lower cavity (51). An extension plate (16) is fixedly mounted on the lower side of the mounting member (31) and at the position of one side of the detection wheel (4). The material containing cavity (5) is divided into an upper cavity (50) and a lower cavity (51). The upper cavity (50) is provided in the interior of the mounting member (31). The lower cavity (51) is jointly provided in the interior of the mounting member (31) and the interior of the extension plate (16). The cross-sectional area of the lower cavity (51) is smaller than that of the upper cavity (50). The upper port of the lower cavity (51) is opened on the bottom surface of the upper cavity (50). The liquid injection nozzle (7) is fixedly mounted on the lower side surface of the extension plate (16). The interior of the extension plate (16) and the interior of the liquid injection nozzle (7) are jointly and communicatively provided with a liquid outlet hole (8). The liquid outlet hole (8) communicates with the external environment and the lower cavity (51). The interior of the extension plate (16) and at the middle position of the liquid outlet hole (8) is communicatively provided with a sliding cavity (9). A sliding block (10) is hermetically and slidably mounted in the sliding cavity (9). First through holes (11) are longitudinally formed through both sides of the sliding block (10). Spaces exist on both sides of the sliding block (10) in the sliding cavity (9). A vent hole is provided in the interior of the extension plate (16) and at the lower position of one side space. The vent hole communicates with the external environment and the space on this side. The interior of the mounting member (31) and the interior of the extension plate (16) are jointly and communicatively provided with a connecting channel (15). The two ends of the connecting channel (15) respectively communicate with the lifting groove (12) and the space in the sliding cavity (9) at the position of the sliding block (10) facing away from the vent hole. The cavity in which the lifting groove (12) is connected to the sliding cavity (9) through the connecting channel (15) is filled with hydraulic oil.

5. The floor flatness detection mechanism for construction engineering land according to claim 4, characterized in that, The bottom surface of the upper cavity (50) is inclined, and the lowest point of the inclined position of the bottom surface of the upper cavity (50) corresponds to the upper port of the lower cavity (51).

6. The flatness detection mechanism for the floor of a construction project according to claim 5, wherein, A separation chamber (17) is fixedly installed in the upper cavity (50). The cavity of the separation chamber (17) is close to the liquid inlet hole (6). There is a distance between the side wall of the separation chamber (17) and the side wall of the upper cavity (50) in the corresponding direction. A feeding mechanism is arranged in the separation chamber (17), and the feeding mechanism is connected to the lifting member (13). The up and down movement of the lifting member (13) is used to control the feeding mechanism to supplement liquid pigment into the lower cavity (51).

7. An apparatus for detecting the flatness of a floor for construction projects according to claim 6, characterized in that, The feeding mechanism includes a second through hole (18), a first sliding groove (19), a sliding rod (20), a special-shaped hole (21), a second sliding groove (22) and a connecting rod (23). A second through hole (18) is formed through the bottom wall of the separation chamber (17). The second through hole (18) communicates the inner cavity of the separation chamber (17) with the material containing cavity (5). A first sliding groove (19) is formed inside the mounting member (31) and above the material containing cavity (5). A sliding rod (20) is arranged in the cavity of the separation chamber (17). The upper end of the sliding rod (20) is slidably connected to the first sliding groove (19). There is a distance between the upper end of the sliding rod (20) and the top wall of the first sliding groove (19). The lower end of the sliding rod (20) is hermetically slidably connected to the second through hole (18). A special-shaped hole (21) is formed in the lower side of the sliding rod (20). The upper side end of the special-shaped hole (21) communicates with the cavity of the separation chamber (17). The lower side end of the special-shaped hole (21) is formed on the circumferential side surface of the sliding rod (20) and is closed by the bottom wall of the separation chamber (17). A second sliding groove (22) is formed inside the mounting member (31) and communicates between the first sliding groove (19) and the lifting groove (12). A connecting rod (23) is slidably installed in the second sliding groove (22). The two ends of the connecting rod (23) are respectively fixedly connected to the sliding rod (20) and the lifting member (13). There is a distance between the connecting rod (23) and the upper and lower inner side walls of the second sliding groove (22).

8. The flatness detection mechanism for the floor of a construction project according to claim 7, characterized in that, Fixing plates (24) are longitudinally and equidistantly slidably installed in the cavity of the separation chamber (17). Through holes are formed equidistantly inside the fixing plates (24). The fixing plates (24) are fixedly connected to the sliding rod (20).

9. An inspection mechanism for the flatness of the floor of a construction project land according to claim 8, characterized in that, The lower side end of the special-shaped hole (21) faces the side wall of the material containing cavity (5).

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