Concrete leveling device for building construction and use method thereof

Abstract

The present application relates to the technical field related to construction tools, and discloses a concrete leveling device for building construction and a method of using the same. In order to solve the problem of uneven road surface caused by manual trampling before concrete leveling, two pedals that can move along guide rails are arranged on the leveling ruler. When a person steps on one pedal, the other pedal is relatively away from the leveling ruler due to the elastic force of a thrust spring. The pedals are supported by supporting legs to ensure the stability of the pedal placement. As a person continuously and alternately steps on the two pedals and continuously pulls the leveling ruler to move, it is prevented from directly stepping into the concrete, thereby preventing the problem of local pits caused by manual trampling when the concrete is leveled, and finally achieving the effect of stepping in the air.

Description

Technical Field

[0001] The present application relates to the technical field related to building construction tools, and in particular to a concrete leveling device for building construction and a method of using the same. Background Art

[0002] Concrete leveling devices in building construction, namely concrete leveling rulers, are essential tools in the construction process. These advanced devices integrate sophisticated mechanical and electronic control technologies, and through a series of sophisticated and efficient operating processes, ensure that the flatness, density and thickness of concrete pavements or floors strictly meet engineering design standards, thereby significantly improving construction quality and efficiency.

[0003] The leveling rulers on the current market are generally equipped with high-performance vibration motors. Through the powerful action of the vibration motor, it can not only effectively scrape the concrete surface, but also promote the compaction and uniform distribution of the concrete inside, thereby forming a solid and smooth road surface or ground structure. However, in the actual operation process, traditional leveling rulers mostly rely on manual handheld traction handles to move. Although this method is flexible, it has obvious disadvantages: manual labor will inevitably step on the concrete to be leveled during the pulling process, leaving two significant footprint pits. As the leveling work continues, these pits formed by manual trampling become a key factor affecting the overall flatness due to the relatively reduced amount of concrete. This not only reduces the efficiency of the leveling operation, but also due to the uneven distribution of concrete, the final road surface or ground structure will be partially uneven, affecting the performance and aesthetics. Summary of the invention

[0004] The present application proposes a concrete leveling device for building construction and a method of using the same, which has the advantage of being stepped on in the air, and is used to solve the problem in the above background technology that the concrete is uneven due to manual stepping on it before being leveled, resulting in potholes on the road surface.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a concrete leveling device for building construction, comprising: a leveling ruler, with a traction handle fixed on the top, a vibration motor installed in the middle, and a guide slide rail fastened to the side; a guide slider, movably installed on the guide slide rail, and a thrust spring is connected between the guide slider and the guide slide rail; a transfer frame, installed in the middle of the guide slider, and a driving slide arm is movably installed in the middle of the transfer frame; a pedal is installed on the top of the driving slide arm, and a support leg installed on the bottom through a support base; a reset spring is connected between the transfer frame and the pedal.

[0006] Furthermore, the supporting legs are screw rods, and three supporting legs are installed at the bottom of a supporting base, and the three supporting legs are distributed at equal angles with the central axis of the supporting base as the center.

[0007] Furthermore, it also includes: a rope drum, movably installed at the bottom of the guide slider; a traction rope, one end of which is fixedly connected to the side of the rope drum, and the other end is fixedly connected to the side of the leveling ruler; a driven gear, movably installed at the bottom of the transfer frame, a driving bevel gear is coaxially fixed to the end of the driven gear, and a bevel gear ring frame meshing with the outer teeth of the driving bevel gear is fixedly connected to the inner side of the rope drum; a driving gear row, movably installed on the side of the driving slide arm, and the driving gear row is meshed with the driven gear.

[0008] Furthermore, a guide piston is fixedly installed at the bottom of the driving slide arm, and the guide piston is located in the inner cavity of the support base. The top of the driving gear row moves along the guide rod extending from the side of the driving slide arm. An adjusting bolt is threadedly connected to the guide rod on the side of the driving slide arm. An adjusting spring is connected between the driving gear row and the driving slide arm, and an air supply passage is opened inside the driving slide arm.

[0009] Furthermore, the tooth shape of the driving tooth row is a right triangle.

[0010] Furthermore, a limiting push rod is fastened to the bottom of the driving gear row, and a limiting groove is arranged on the inner top of the supporting base.

[0011] Furthermore, the driving slide arm is movably installed between the pedal, a detection push frame is fixedly installed at the bottom of the pedal, the bottom of the detection push frame is an inclined surface, a telescopic push rod is fixedly connected to the top of the transfer frame, and the telescopic push rod is located on the inner side of the reset top spring.

[0012] Further, the guide piston is elliptical in shape.

[0013] Furthermore, a lower reset oblique frame is fixedly connected to the top of the guide piston, an upper reset oblique frame is fixedly connected to the bottom of the rope drum, and the top of the lower reset oblique frame and the bottom of the upper reset oblique frame are both inclined surfaces.

[0014] A method for using a concrete leveling device for building construction comprises the following steps:

[0015] S1. Start the vibration motor to make the leveling ruler vibrate during movement to promote the leveling of concrete.

[0016] S2. The operator steps on one of the pedals, which drives the support base and the support legs to be inserted into the concrete through the driving slide arm to form a stable support; at this time, the reset top spring is compressed.

[0017] S3. The operator holds the traction handle and pulls the leveling ruler forward. Due to the fixing effect of the pedal, the guide slider slides on the guide rail and squeezes and pushes the top spring; the vibration motor continues to work to vibrate and level the concrete under the leveling ruler.

[0018] S4. When the leveling ruler moves to a certain distance, the operator moves to another pedal that has not been stepped on, and repeats the stepping and supporting action; due to the elastic force of the thrust spring and the return spring, the pedal that has not been stepped on will automatically rise and prepare for the next step.

[0019] S5. The operator steps on the two pedals alternately and keeps pulling the traction handle to make the leveling ruler perform continuous leveling operations on the concrete surface. Repeat the above steps until the concrete leveling work of the entire area is completed.

[0020] The present invention has the following beneficial effects:

[0021] The present application provides a concrete leveling device for building construction and a method of using the same. The device is designed with two pedals that can move flexibly along a guide rail. The two pedals are carefully arranged on the side of the leveling ruler. When the operator steps on one of the pedals, the other pedal will automatically move relatively away from the leveling ruler under the elastic force of the propulsion top spring, forming a stable stepping platform. In order to ensure the stability of the pedal, the device is also equipped with sturdy support legs, which can provide strong support for the pedal during the stepping process and effectively prevent the pedal from shaking.

[0022] During use, the operator only needs to step on the two pedals alternately and continuously pull the leveling ruler to move it to achieve the leveling operation of the concrete. This design cleverly prevents the operator from stepping directly on the concrete to be leveled, thus completely solving the problem of local pits in the concrete caused by manual stepping. At the same time, since a certain distance is maintained between the pedal and the concrete, the effect of "stepping in the air" is achieved, which not only protects the integrity of the concrete, but also significantly improves the quality and efficiency of the leveling operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which constitute a part of the specification, illustrate embodiments disclosed in the present application and, together with the description, serve to explain the principles disclosed in the present application.

[0024] The present application can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0025] Figure 1 This is a schematic diagram of the overall external three-dimensional structure of this application;

[0026] Figure 2 The schematic diagram of the guide slider structure and position;

[0027] Figure 3 It is a schematic diagram of the three-dimensional structure of the support base;

[0028] Figure 4 This is a schematic diagram of the structure and position of the driving slide arm;

[0029] Figure 5 A three-dimensional schematic diagram of the installation location of the transfer rack and its internal components;

[0030] Figure 6 It is a schematic diagram of the partial cross-section structure of the whole front;

[0031] Figure 7 for Figure 6 The enlarged structural diagram at E in the middle;

[0032] Figure 8 for Figure 6 The enlarged structural diagram at F in the middle;

[0033] Fig. 9 The following is a schematic diagram of the structure of the driven gear and its installation location;

[0034] Fig.10 It is a schematic diagram of the three-dimensional structure between the guide slider and the rope drum.

[0035] In the figure: 1. leveling ruler; 2. vibration motor; 3. traction handle; 4. guide slider; 400. guide slide rail; 5. transfer frame; 6. driving slide arm; 600. air supply channel; 7. driving gear row; 700. adjusting spring; 701. adjusting bolt; 702. limit push rod; 8. stepping on the pedal; 9. pushing top spring; 10. traction rope; 11. telescopic push rod; 110. reset top spring; 12. rope drum; 120. bevel gear ring frame; 13. support base; 130. limit groove; 131. support leg; 14. detection push frame; 15. driven gear; 150. driving bevel gear; 16. guide piston; 17. lower reset bevel frame; 170. upper reset bevel frame. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Embodiment 1

[0037] See also Figure 1 It can be seen that two traction handles 3 are fixed on the top of the leveling ruler 1, and the operator moves the leveling ruler 1 by pulling the traction handles 3. A vibration motor 2 is fixedly installed in the middle of the leveling ruler 1. When powered on, the vibration motor 2 will vibrate, thereby leveling the concrete in the area where the leveling ruler 1 passes. During the manual traction process, the concrete to be leveled will be stepped on by humans and pits will be formed, resulting in the leveling ruler 1 being unable to effectively level the concrete. In order to solve this problem, this embodiment 1 refers to Figure 1 , Figure 2 and Figure 4 It can be seen that the side of the flattening ruler 1 is provided with a guide rail 400 fastened by bolts, and there are two guide rails 400, which are symmetrically arranged on the same side of the flattening ruler 1. Figure 2 It can be seen that the guide slide 4 is movably mounted on the guide rail 400, and the guide slide 4 can reciprocate along the guide rail 400. A push spring 9 is connected between the guide slide 4 and the guide rail 400. Under normal circumstances, the guide slide 4 is pushed by the elastic force of the push spring 9 to force it to move in a direction relatively away from the leveling ruler 1.

[0038] The guide slider 4 has a transfer frame 5 connected by a bearing in the middle, and the transfer frame 5 can rotate in the middle of the guide slider 4. A driving slide arm 6 is movably installed in the middle of the transfer frame 5, and the driving slide arm 6 can only reciprocate vertically up and down on the transfer frame 5. A pedal 8 is installed on the top of the driving slide arm 6, and the pedal 8 provides a stepping area for the operator. The bottom of the driving slide arm 6 has a support leg 131 installed through a support base 13. Figure 3 It can be seen that the support leg 131 is preferably a screw rod, and three support legs 131 are installed at the bottom of a support base 13, and the three support legs 131 are distributed at equal angles with the central axis of the support base 13 as the center. Since the diameter of the support leg 131 is relatively small, it can be inserted into the concrete with a smaller area. When people step on the pedal board 8, the three support legs 131 can stably support the pedal board 8. Figure 2 It can be seen that a return spring 110 is connected between the transfer frame 5 and the pedal board 8 , and the pedal board 8 is always moved upward away from the transfer frame 5 due to the elastic push of the return spring 110 .

[0039] In actual application, the vibration motor 2 is continuously operated by external power supply, and the external power supply can generally be a lithium battery, which only needs to be fixed on the leveling ruler 1. The operator steps on a pedal 8, and the pedal 8 presses the support base 13 downward by driving the sliding arm 6, so that the support leg 131 is inserted into the concrete and rests on the ground, thereby forming a stable support for the pedal 8. The downward movement of the pedal 8 compresses the return top spring 110 at the same time.

[0040] Afterwards, by manually pulling the traction handle 3, the leveling ruler 1 drives the vibration motor 2 to move in the direction of the operator. At the same time, the guide slide rail 400 also approaches the pedal 8. Since one of the pedals 8 cannot move due to manual stepping, the guide slider 4 and the guide slide rail 400 of this part will squeeze the push spring 9; the other pedal 8 that is not stepped on will be relatively far away due to the elastic force of the push spring 9. Then the operator moves to the other pedal 8. At this time, the operator presses on the pedal 8 and presses the support base 13 downward, and uses the support leg 131 to support on the concrete; the unpressed pedal 8 moves upward under the elastic force of the reset spring 110. Afterwards, the traction handle 3 is manually pulled again, and the above-mentioned content is cyclically operated to ensure that the operator can effectively level the concrete with the leveling ruler 1 in the process of stepping on the concrete in the air.

[0041] It should be noted that since the guide slider 4 and the transfer frame 5 are connected by bearings, when a pedal 8 is manually pressed, pulling the traction handle 3 can achieve a certain degree of deflection of the leveling ruler 1 with the central axis of the pedal 8 as the rotation center, thereby changing the leveling movement path. Embodiment 2

[0042] Further improvements are made based on Example 1. Figure 2 , Figure 5 , Figure 6 , Figure 7 and Fig.10 It can be clearly seen that in order to reduce the pulling strength when the operator pulls the leveling ruler 1, a rope drum 12 is movably installed at the bottom of the guide slider 4. The rope drum 12 can rotate at the bottom of the guide slider 4 to achieve the winding / releasing of the traction rope 10 on the side of the rope drum 12. Specifically, one end of the traction rope 10 is fixedly connected to the side of the rope drum 12, and the other end is fixedly connected to the side of the leveling ruler 1. Figure 2 It can be seen that when the guide slider 4 moves to the right extreme position of the guide rail 400 , all the traction ropes 10 are released from the side of the rope drum 12 and are relatively tightened.

[0043] Combination Figure 7 and Fig. 9 It can be clearly seen that a driven gear 15 is movably mounted at the bottom of the intermediate frame 5, and a driving bevel gear 150 is coaxially fixed with the driven gear 15. Correspondingly, a bevel gear ring frame 120 is fixedly connected to the inner side of the rope drum 12 and meshes with the outer teeth of the driving bevel gear 150. When the driven gear 15 drives the driving bevel gear 150 to rotate, the driving bevel gear 150 meshes with the bevel gear ring frame 120 to achieve the winding of the rope drum 12. In order to achieve the driving of the driven gear 15, the bevel gear 150 is combined with the bevel gear ring frame 120 to achieve the winding of the rope drum 12. Figure 7 and Figure 8It can be clearly seen that a driving gear row 7 meshing with the driven gear 15 is movably installed on the side of the driving slide arm 6. When the driving gear row 7 follows the driving slide arm 6 to move up and down, the driving gear row 7 will force the driven gear 15 to rotate through the meshing with the driven gear 15, and utilize the driving bevel gear 150 and the bevel gear ring frame 120 to transmit the rope drum 12 to realize the winding of the traction rope 10.

[0044] In actual operation, when one of the pedals 8 is stepped on manually, the pedal 8 drives the driving slide arm 6 downward and synchronously drives the driving gear row 7 to move downward. During this process, the driving gear row 7 is forced to rotate by the engagement with the driven gear 15, and the engagement between the driving bevel gear 150 and the bevel gear ring frame 120 is used to force the rope drum 12 to rotate synchronously. Before stepping on the pedal, the guide slider 4 is pushed by the elastic force of the thrust top spring 9 to be located at the far right of the guide slide rail 400. At this time, the traction rope 10 is completely released from the rope drum 12. When the pedal 8 is stepped on, the rope drum 12 is driven to rotate by the bevel gear ring frame 120, so that the rope drum 12 can reel in the traction rope 10. Figure 6 and Figure 7 It can be seen that when the traction rope 10 is wound by the rope drum 12, the support base 13 is always in contact with the ground due to the downward pressure of the pedal 8, so the winding of the traction rope 10 will pull the leveling ruler 1 towards the operator, thereby reducing the labor intensity required for the operator to manually pull the traction handle 3.

[0045] The advantage of the second embodiment is that the operator's own weight is used as the driving force, and it is converted into the traction force required for pulling the leveling ruler 1 to move, thereby greatly reducing the labor intensity required for manually pulling the leveling ruler 1 to move. Embodiment 3

[0046] Further improvement on the basis of the second embodiment, in order to slow down the winding speed of the rope drum 12 on the traction rope 10, please refer to Figure 2 , Figure 6-Figure 8 It can be seen that a guide piston 16 is fixedly installed at the bottom of the driving slide arm 6, and the guide piston 16 is located in the inner cavity of the support base 13. When the guide piston 16 moves up and down inside the support base 13, it can squeeze the air inside the support base 13 to facilitate subsequent damping and buffering.

[0047] Combination Figure 8 It can be seen that the top of the driving gear row 7 moves along the guide rod extending from the side of the driving slide arm 6, and an adjusting bolt 701 is threadedly connected to the guide rod on the side of the driving slide arm 6 to limit the movement range of the driving gear row 7. An adjusting spring 700 is connected between the driving gear row 7 and the driving slide arm 6. The elastic force of the adjusting spring 700 pushes the driving gear row 7 to always have a tendency to move away from the driving slide arm 6. Figure 7It can be seen that, under the influence of the elastic force of the adjustment spring 700, the driving gear row 7 always has a movement tendency to move closer to the driven gear 15. Figure 7 It can be seen that the tooth shape of the driving gear row 7 is a right triangle, which has the characteristic of one-way transmission. When the driving gear row 7 moves downward, it can mesh with the driven gear 15 to drive the driven gear 15 to rotate; similarly, when the driving gear row 7 moves upward, the driving gear row 7 is blocked by the driven gear 15, which will cause it to move away from the driven gear 15 and compress the adjustment spring 700.

[0048] The driving slide arm 6 is provided with an air delivery channel 600 communicating with the inner cavity of the supporting base 13. Figure 8 It can be seen that when the driving gear row 7 moves outward and meshes with the driven gear 15, the top of the driving gear row 7 will partially block the air supply passage 600, thereby preventing the air in the air supply passage 600 from flowing out to the outside, thereby reducing the rate at which the air in the inner cavity of the support base 13 flows out; similarly, when the driving gear row 7 moves toward the direction approaching the driving slide arm 6, the air supply passage 600 is fully opened. At this time, the external air can be quickly connected to the inner cavity of the support base 13 through the air supply passage 600, thereby realizing the rapid replenishment of the air inside the support base 13.

[0049] refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 It can be seen that the bottom of the driving gear row 7 is fastened with a limiting push rod 702, and correspondingly, a limiting groove 130 is opened on the inner top of the support base 13. When the limiting push rod 702 is inserted into the limiting groove 130, the movement resistance of the driving gear row 7 when it is disengaged can be increased.

[0050] Under normal conditions, the pedal 8 is pushed upward by the elastic force of the return spring 110, thereby pulling the driving slide arm 6 and the driving gear row 7 to move upward synchronously. At the same time, the driving slide arm 6 drives the guide piston 16 to move upward; the driving gear row 7 moves upward and pulls the limit push rod 702 upward until the limit push rod 702 is inserted into the limit groove 130. At the same time, the limit groove 130 pushes the driving gear row 7 to compress the adjustment spring 700, and the top of the driving gear row 7 will not block the air delivery channel 600.

[0051] When the pedal 8 is stepped on downward, the driving slide 6 will be pressed downward synchronously. Since the pedal 8 is pressed by the person's own gravity, the supporting base 13 will be used to push the supporting leg 131 downward until the supporting leg 131 touches the ground. After that, the limiting push rod 702 is disengaged from the limiting groove 130. As the limiting push rod 702 is disengaged from the limiting groove 130, the movement restriction of the driving gear row 7 is released. Under the elastic force of the adjustment spring 700, it is meshed with the driven gear 15. As the driving slide 6 pushes the driving gear row 7 downward, the driving gear row 7 drives the driven gear 15 to rotate. In combination with the second and third embodiments, the driven gear 15 drives the rope drum 12 to reel the traction rope 10 through the driving bevel gear 150 and the bevel gear ring frame 120, thereby realizing the traction of the flattening ruler 1. At the same time, when the driving gear row 7 moves in the direction away from the driving slide 6 due to the elastic force of the adjustment spring 700, the top of the driving gear row 7 will block the air supply channel 600. As the guide piston 16 moves downward and compresses the air in the inner cavity of the support base 13, the air flow in the inner cavity of the support base 13 is discharged outward through the air supply channel 600. Since the top of the driving gear row 7 partially blocks the air supply channel 600 at this time, the air outflow will be limited, thereby limiting the downward speed of the guide piston 16. In combination with the above, the driving gear row 7 moves downward and drives the driven gear 15 to rotate. When the movement rate of the driving slide arm 6 decreases, the speed at which the driving gear row 7 drives the driven gear 15 to rotate is also relatively reduced, thereby slowing down the winding speed of the rope drum 12 for the traction rope 10. Avoid the problem that the rope drum 12 winds up the traction rope 10 too quickly due to the heavy weight of stepping on the pedal 8, and eventually the problem of the flattening ruler 1 moving too fast.

[0052] Afterwards, when another pedal 8 is stepped on manually, the squeezing force on the top of the pedal 8 is released. Under the elastic force of the reset top spring 110, the pedal 8 drives the driving slide 6 and the driving gear row 7 to move upward synchronously. In this process, due to the one-way meshing between the driving gear row 7 and the driven gear 15, when the driving gear row 7 moves upward, the driven gear 15 forces the driving gear row 7 to compress the adjusting spring 700 by pushing the tooth bevel of the driving gear row 7, and the top of the driving gear row 7 will not block the air supply channel 600, so that the air supply channel 600 can be fully opened. When the guide piston 16 moves upward with the driving slide 6, since the opening of the air supply channel 600 is the largest, the external air can quickly pass through the air supply channel 600 and enter the inner cavity of the support base 13, thereby replenishing the air in the inner cavity of the support base 13 more quickly. At the same time, when the guide piston 16 continues to move upward, the support base 13 will eventually reach the bottom of the rope drum 12, thereby limiting the support base 13 from continuing to move upward. As the elastic force of the return spring 110 continuously pushes the pedal 8 upward, the limit push rod 702 will eventually move into the limit slot 130. The limit of the limit slot 130 makes the drive gear row 7 always press the adjustment spring 700, and the drive gear row 7 is also relatively far away from the driven gear 15. The guide slider 4 is pushed by the elastic force of the push spring 9 to move away from the leveling ruler 1. At this time, the drive gear row 7 is relatively separated from the driven gear 15, so that the rope drum 12 can rotate freely. When the guide slider 4 moves to the right limit of the guide rail 400, the traction rope 10 is completely released and is in a relatively tensioned state. Embodiment 4

[0053] Further improvements are made on the basis of the third embodiment, in order to further realize the controllable pulling speed of the flattening ruler 1, please refer to Figure 2 , Figure 4 , Figure 5 , Figure 6-Figure 8 It can be seen that the driving slide arm 6 and the pedal 8 are movably installed through the round rod guide, and the pedal 8 can move relatively within a certain range on the top of the driving slide arm 6. At the same time, a detection push frame 14 is fixedly installed at the bottom of the pedal 8, and the bottom of the detection push frame 14 is inclined. At the same time, a telescopic push rod 11 is fixedly connected to the top of the transfer frame 5, and the telescopic push rod 11 is located on the inner side of the reset top spring 110. The top of the telescopic push rod 11 is pushed by the elastic force of the reset top spring 110 to make the top of the telescopic push rod 11 hit the inclined surface of the detection push frame 14. Under normal circumstances, under the push of the elastic force of the reset top spring 110, the telescopic push rod 11 will push the inclined surface of the detection push frame 14 to force the detection push frame 14 to move in the direction away from the driving slide arm 6 until the driving slide arm 6 moves to the right limit.

[0054] Specific, combined Figure 6-Figure 8It can be seen that when the pedal 8 is stepped on manually, it can be known from the content of the third embodiment that the top of the driving gear row 7 will partially block the air supply duct 600. Since the air supply duct 600 can limit the exhaust rate of the air in the inner cavity of the support base 13, it will eventually limit the winding speed of the rope drum 12 on the traction rope 10. Therefore, in the initial state, the winding speed of the rope drum 12 on the traction rope 10 is relatively low, and the traction speed of the flattening ruler 1 is relatively slow. When it is necessary to speed up the traction speed of the flattening ruler 1, it is only necessary to manually pull the traction handle 3. On the one hand, pulling the traction handle 3 helps to enhance the movement of the flattening ruler 1 toward the operator; on the other hand, when a person pulls the traction handle 3, the pedal 8 will have a driving force applied to the left, so that the detection push frame 14 pushes the driving gear row 7 to further compress the adjustment spring 700 to the left, and the top of the driving gear row 7 will increase the opening of the air supply duct 600, and the air in the air supply duct 600 can flow out faster, causing the guide piston 16 to speed up downward. The driving gear row 7 drives the driven gear 15 to rotate faster, causing the rope drum 12 to speed up the winding rate of the traction rope 10, and finally, speeding up the movement of the leveling ruler 1 towards the operator.

[0055] On this basis, in order to ensure that the pedal 8 and the flattening ruler 1 are always opposite to each other, when the traction handle 3 is manually pulled, the force applied by the foot can make the detection push frame 14 move in the direction of the driving gear row 7, combined with Figure 4 It can be clearly seen that the guide piston 16 is elliptical in shape, which restricts the guide piston 16 from rotating in the support base 13. When the support base 13 is pressed into the concrete by the support legs 131, the support legs 131 also restrict the support base 13 from rotating. Finally, when the pedal 8 is stepped on downward, the direction indicated by the pedal 8 will not rotate. In order to ensure the accuracy of the pedal 8 when it is reset, the pedal 8 is rotated in the direction indicated by the pedal 8. Figure 4 , Figure 5 and Figure 7It can be clearly seen that the top of the guide piston 16 is fixedly connected to a lower reset inclined frame 17, and correspondingly, the bottom of the rope drum 12 is fixedly connected to an upper reset inclined frame 170. The top of the lower reset inclined frame 17 and the bottom of the upper reset inclined frame 170 are both inclined surfaces. When the upper reset inclined frame 170 and the lower reset inclined frame 17 are fitted together, the two can form a cylinder with a through middle. Combining the contents of the above embodiments, it can be known that when the operator no longer squeezes the pedal 8, the push spring 9 is pushed by the elastic force to move the guide slider 4 to the right limit of the guide slide rail 400, and finally the traction rope 10 is fully extended and tightened. At this time, the rope drum 12 also limits the position of the upper reset inclined frame 170 to be always constant. When the pedal 8 is driven by the elastic force of the reset top spring 110 to drive the guide piston 16 to move upward, the lower reset inclined frame 17 on the top of the guide piston 16 will eventually fit with the upper reset inclined frame 170 to form a complete cylindrical tube. At this time, the inclined surface positioning between the upper reset inclined frame 170 and the lower reset inclined frame 17 is used to force the pedal 8 to reset itself when it is not stepped on, ensuring that the position of the detection push frame 14 is always facing the direction of the flattening ruler 1. When the subsequent operator pulls the traction handle 3, the driving force is applied to the pedal 8 by the foot, forcing the detection push frame 14 to have a tendency to move in the direction of the flattening ruler 1.

Claims

1. A concrete leveling device for building construction, characterized in that: include: A flattening ruler (1) is provided with a traction handle (3) fixed on the top, a vibration motor (2) is installed in the middle, and a guide rail (400) is fastened to the side; A guide slider (4) is movably mounted on the guide rail (400), and a push spring (9) is connected between the guide slider (4) and the guide rail (400); The transfer frame (5) is installed in the middle of the guide slide block (4), and a driving slide arm (6) is movably installed in the middle of the transfer frame (5); A pedal (8) is mounted on the top of the driving slide arm (6), and a support leg (131) is mounted on the bottom via a support base (13); A return spring (110) is connected between the transfer frame (5) and the pedal (8); A rope drum (12) movably mounted on the bottom of the guide slider (4); A traction rope (10), one end of which is fixedly connected to the side of the rope drum (12), and the other end of which is fixedly connected to the side of the leveling ruler (1); A driven gear (15) is movably mounted on the bottom of the intermediate rotating frame (5); a driving helical gear (150) is coaxially fixed to the end of the driven gear (15); and a helical gear ring frame (120) meshing with the outer teeth of the driving helical gear (150) is fixedly connected to the inner side of the rope drum (12); The driving gear row (7) is movably mounted on the side of the driving slide arm (6), and the driving gear row (7) is meshed with the driven gear (15).

2. The concrete leveling device for building construction according to claim 1, characterized in that: The support legs (131) are screw rods, and three support legs (131) are installed at the bottom of a support base (13). The three support legs (131) are distributed at equal angles with the central axis of the support base (13) as the center.

3. The concrete leveling device for building construction according to claim 1, characterized in that: A guide piston (16) is fixedly mounted at the bottom of the driving slide arm (6), and the guide piston (16) is located in the inner cavity of the support base (13). The top of the driving gear row (7) moves along a guide rod extending from the side of the driving slide arm (6). An adjusting bolt (701) is threadedly connected to the guide rod on the side of the driving slide arm (6). An adjusting spring (700) is connected between the driving gear row (7) and the driving slide arm (6). An air delivery passage (600) is provided inside the driving slide arm (6).

4. The concrete leveling device for building construction according to claim 3, characterized in that: The tooth shape of the driving tooth row (7) is a right triangle.

5. The concrete leveling device for building construction according to claim 3, characterized in that: The bottom of the driving gear row (7) is fastened with a limiting push rod (702), and the inner top of the supporting base (13) is provided with a limiting groove (130).

6. The concrete leveling device for building construction according to claim 1, characterized in that: The driving slide arm (6) is movably mounted between the pedal (8), a detection push frame (14) is fixedly mounted at the bottom of the pedal (8), the bottom of the detection push frame (14) is inclined, a telescopic push rod (11) is fixedly connected to the top of the transfer frame (5), and the telescopic push rod (11) is located on the inner side of the reset top spring (110).

7. The concrete leveling device for building construction according to claim 6, characterized in that: The guide piston (16) is elliptical in shape.

8. The concrete leveling device for building construction according to claim 6, characterized in that: The top of the guide piston (16) is fixedly connected to a lower reset inclined frame (17), and the bottom of the rope drum (12) is fixedly connected to an upper reset inclined frame (170). The top of the lower reset inclined frame (17) and the bottom of the upper reset inclined frame (170) are both inclined surfaces.

9. A method for using the concrete leveling device for building construction as claimed in claim 1, characterized in that: The following steps are involved: S1, starting the vibration motor (2) to make the leveling ruler (1) vibrate during the movement, thereby promoting the leveling of the concrete; S2, the operator steps on one of the pedals (8), and the pedal (8) drives the support base (13) and the support leg (131) to be inserted into the concrete through the driving slide arm (6), thereby forming a stable support; at this time, the return top spring (110) is compressed; S3, the operator holds the traction handle (3) and pulls the leveling ruler (1) forward. Due to the fixing effect of the pedal (8), the guide slider (4) slides on the guide rail (400) and squeezes the push spring (9); the vibration motor (2) continues to work to vibrate and level the concrete under the leveling ruler (1); S4. After the leveling ruler (1) moves forward, the operator moves to another pedal (8) that has not been stepped on, and repeats the stepping and supporting action; due to the elastic force of the push spring (9) and the return spring (110), the pedal (8) that has not been stepped on will automatically rise and prepare for the next step; S5. The operator alternately steps on the two pedals (8) and continuously pulls the traction handle (3) so that the leveling ruler (1) performs continuous leveling operations on the concrete surface. The above steps are repeated until the concrete leveling work of the entire area is completed.

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