Laser screed for concrete floor construction

Abstract

The application discloses a laser leveling machine for concrete floor construction, which comprises a mobile vehicle, a base plate installed on the head of the mobile vehicle, first supports installed on opposite ends of the base plate, a lifting rod installed on the first supports in a liftable manner, leveling pressure heads provided with socket joints on opposite ends, the lower ends of the lifting rod movably inserted into the socket joints, lock shafts elastically installed on opposite side walls of the socket joints, lock holes provided on opposite sides of the lower ends of the lifting rod, and the lock shafts detachably and movably inserted into the lock holes, and a vibration assembly installed on the leveling pressure heads. The leveling head of the traditional concrete leveling machine cannot be quickly replaced to adapt to different concrete floor leveling construction according to different concrete floor scenes.

Description

Technical Field

[0001] This invention relates to the field of concrete floor construction technology, and specifically to a laser leveling machine for concrete floor construction. Background Technology

[0002] In water conservancy engineering construction, concrete is frequently used in infrastructure construction. After concrete is laid, its surface needs to be pressed and leveled before it dries and sets. Manual leveling of concrete is slow, and often the concrete dries and sets before it can be leveled, affecting the quality of construction. Generally, concrete leveling is done using a concrete screed machine. Concrete screed machines have high leveling efficiency. Currently, traditional laser screed machines typically have a single-structure leveling head, which can only be used for leveling a specific type of concrete surface. However, the concrete surface environment changes during construction; for example, an alloy scraper is needed for wear-resistant flooring, while a reinforced vibrator is needed for fiber-reinforced concrete. The leveling heads of traditional concrete screed machines cannot be quickly changed to adapt to different concrete surface conditions for leveling. Therefore, the application range of traditional laser screed machines is relatively narrow. Summary of the Invention

[0003] To overcome the shortcomings of existing technologies, a laser leveling machine for concrete floor construction is provided to solve the problem that the leveling head of traditional concrete leveling machines cannot be quickly changed to adapt to different concrete floor leveling construction scenarios.

[0004] To achieve the above objectives, a laser leveling machine for concrete floor construction is provided, comprising: A mobile vehicle, wherein a base plate is mounted on the front of the mobile vehicle, and a first bracket is mounted on each of the opposite ends of the base plate; The boom is mounted on the first bracket in a height-adjustable manner; A leveling head is provided with sockets at both ends. The lower end of the rod is movably inserted into the socket. Locking shafts are elastically installed on the opposite side walls of the socket. Locking holes are provided on the opposite sides of the lower end of the rod. The locking shafts are detachable and movably inserted into the locking holes. A vibration assembly is installed on the leveling head.

[0005] Furthermore, the first bracket is equipped with a vertically arranged hydraulic cylinder, the telescopic end of which is connected to the upper end of the boom.

[0006] Furthermore, a laser level is mounted on the substrate.

[0007] Furthermore, the laser level is mounted on both ends of the substrate.

[0008] Furthermore, the locking shaft is arranged along the width direction of the leveling pressure head.

[0009] Furthermore, the side of the leveling head is provided with a through hole communicating with the socket. One end of the locking shaft is elastically installed in the through hole through an elastic element, and the other end of the locking shaft is detachably and rotatably inserted into the locking hole.

[0010] Furthermore, an enlarged diameter hole is formed at the end of the through hole away from the socket. The elastic element is a helical spring, which is housed in the enlarged diameter hole and movably sleeved on the locking shaft. One end of the helical spring is connected to the locking shaft, and the other end of the helical spring is connected to the bottom of the enlarged diameter hole.

[0011] Furthermore, the vehicle head is connected to the base plate via a telescopic hydraulic cylinder, which is arranged along the width direction of the base plate.

[0012] The beneficial effect of this invention lies in the quick replacement of the leveling head of the laser leveling machine used for concrete floor construction, adapting to different construction scenarios. The core innovation of this invention is the quick-release connection structure of the leveling head and the hanger rod using a locking shaft and locking hole. The leveling head has sockets at both opposite ends, and the lower end of the hanger rod is movably inserted into the socket. Locking shafts are elastically installed on opposite side walls of the sockets, and locking holes are opened on opposite sides of the lower end of the hanger rod. The locking shafts are detachable and movably inserted into the locking holes. During replacement, simply pull the locking shaft outwards towards the through hole to retract it into the through hole, quickly separating the hanger rod from the leveling head. When installing a new leveling head, align it with the socket and release the locking shaft; the locking shaft automatically resets under the elastic thrust of the elastic element and inserts into the locking hole of the hanger rod. This structural design allows the leveling head to be quickly changed according to different concrete surface scenarios (such as using alloy scrapers for wear-resistant flooring and reinforced vibratory rods for fiber-reinforced concrete), significantly expanding the application range of laser leveling machines and solving the problem that traditional concrete leveling machines have a single leveling head and cannot adapt to different construction needs. Attached Figure Description

[0013] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of a laser leveling machine used for concrete floor construction according to an embodiment of the present invention.

[0014] Figure 2 This is a schematic diagram of the front structure of the mobile vehicle according to an embodiment of the present invention.

[0015] Figure 3 for Figure 2 A magnified view of point A in the diagram.

[0016] Figure 4 This is a schematic diagram of the substrate structure according to an embodiment of the present invention.

[0017] Figure 5 This is a top view of the substrate according to an embodiment of the present invention.

[0018] Figure 6 This is a schematic diagram of the structure of one end of the substrate according to an embodiment of the present invention.

[0019] Figure label: Mobile vehicle 1, base plate 11, first bracket 12, hydraulic cylinder 121, second bracket 13, laser level 14, telescopic cylinder 15; 2. Hanging rod; 3. Lock hole c; Leveling head 3, locking shaft 31, elastic element 32, socket a, insertion hole b; Vibration component 4. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] Reference Figures 1 to 6 As shown, the present invention provides a laser leveling machine for concrete floor construction, comprising: a mobile vehicle 1, a boom 2, a leveling pressure head 3, and a vibration assembly 4.

[0023] In this embodiment, the mobile vehicle 1 is a movable vehicle with a drive mechanism. A base plate 11 is mounted on the front of the mobile vehicle 1. The base plate is arranged along the width direction of the mobile vehicle. The base plate is elongated and has opposite ends.

[0024] In a preferred embodiment, the vehicle front is connected to the base plate 11 via a telescopic hydraulic cylinder 15. The telescopic hydraulic cylinder 15 is disposed along the width direction of the base plate 11. The telescopic hydraulic cylinder is disposed along the length direction of the moving vehicle. By extending the telescopic hydraulic cylinder, the base plate is moved away from the vehicle front.

[0025] First brackets 12 are respectively installed at opposite ends of the substrate 11. A second bracket 13 is installed in the middle of the substrate 11. The lifting rod 2 is mounted on the first bracket 12 in a lifting manner.

[0026] As a preferred implementation method, combined with Figure 2 and Figure 3As shown, the first bracket 12 is equipped with a vertically arranged hydraulic cylinder 121. The telescopic end of the hydraulic cylinder 121 is connected to the upper end of the boom 2.

[0027] In this embodiment, the first support and the second support have the same structure. The first support includes a vertical plate and a horizontal plate. The vertical plate is erected at one end of the base plate. The horizontal plate is arranged along the length of the moving vehicle. One end of the horizontal plate is connected to the upper end of the vertical plate.

[0028] For better information, please refer to the following: Figure 2 As shown, the vertical plate and the horizontal plate are integrally formed, with an overall L-shape. The hydraulic cylinder is vertically mounted on the horizontal plate. The upper end of the boom is coaxially connected to the extension end of the hydraulic cylinder. When the hydraulic cylinder extends downwards, the boom descends.

[0029] See Figure 4 As shown, the leveling head 3 is arranged in the same direction as the substrate. The leveling head is generally elongated. The leveling head has two opposing ends. Receptacle openings a are respectively provided at the opposing ends of the leveling head 3. In this embodiment, the receptacle openings are located on the upper surface of the leveling head. The lower end of the lifting rod 2 is movably inserted into the receptacle opening a. The lower end of the lifting rod is detachably inserted into the receptacle opening, and it can also be flipped to be inserted into the receptacle opening. Locking shafts 31 are elastically mounted on the opposing side walls of the receptacle opening a. Locking holes c are respectively provided on the opposing sides of the lower end of the lifting rod 2. The locking shafts 31 are detachably and movably inserted into the locking holes c.

[0030] For details, please refer to Figure 3 As shown, the locking shaft 31 is arranged along the width direction of the leveling head 3. The lifting rod can be deflected to a certain extent along the length direction of the leveling head.

[0031] The vibration assembly 4 is installed on the leveling head 3. Combined Figure 1 and Figure 2 As shown, the vibration assembly 4 includes a vibration motor. The vibration motor is mounted on the horizontal plate of the second bracket. The vibration motor is connected to the leveling head via an adjustable-length transmission rod.

[0032] For details, please refer to Figure 2 and Figure 4 As shown, the upper surface of the leveling head has a socket b. Socket b is located in the middle of the leveling head. The lower end of the transmission rod is detachably inserted into the socket. After the vibration motor of the vibration assembly is turned on, the vibration motor transmits vibration to the leveling head through the transmission rod. The leveling head uses vibration to level the concrete surface it contacts below.

[0033] Continue reading Figure 1 As shown, a laser level 14 is mounted on the substrate 11. In this embodiment, laser levels 14 are mounted on both ends of the substrate 11.

[0034] Combination Figures 4 to 6 As shown, the side of the leveling head 3 has a through hole communicating with the socket a. One end of the locking shaft 31 is elastically mounted in the through hole via an elastic member 32. The other end of the locking shaft 31 is detachably and rotatably inserted into the locking hole c.

[0035] In a preferred embodiment, an enlarged diameter hole is formed at the end of the through hole away from the socket a. The elastic element 32 is a helical spring. The helical spring is housed in the enlarged diameter hole and movably sleeved on the locking shaft 31. One end of the helical spring is connected to the locking shaft 31. The other end of the helical spring is connected to the bottom of the enlarged diameter hole.

[0036] When adapting to different concrete levels, pull the locking shaft outwards towards the through hole, causing the other end of the locking shaft to retract into the through hole. The locking shafts on opposite sides of the lower end of the hanger rod work together to quickly separate the hanger rod from the leveling head. Align the socket of the new leveling head, adapted for different concrete types, with the lower end of the hanger rod. Simultaneously, pull the locking shaft on the new leveling head outwards towards the through hole, causing the locking shaft to retract into the through hole. Then, insert the lower end of the hanger rod into the socket. Release the locking shaft; under the elastic thrust of the elastic element, the locking shaft resets and inserts into the locking hole of the hanger rod, thus quickly connecting the hanger rod and the leveling head.

[0037] The construction method of the laser leveling machine for concrete floor construction of the present invention includes the following steps: The mobile vehicle moves to the concrete location that needs to be leveled, the telescopic cylinder extends, and the base plate along with the leveling pressure head extends forward.

[0038] Then, the telescopic end of the hydraulic cylinder extends, causing the leveling head to press against the upper surface of the concrete. At the same time, the vibration assembly is activated, and the vibration motor of the vibration assembly generates vibration and transmits it to the leveling head through the transmission rod to level the concrete.

[0039] Specifically, the paving, vibration, and leveling processes using laser screed machines are existing technologies and will not be elaborated upon here. The core of the laser screed machine relies on a system of "laser emitter + receiver + computer control." The laser emitter emits a rotating laser beam from the center of the site to form a reference plane. The receiver on the screed machine monitors the deviation between its own height and the laser plane in real time. The computer adjusts more than 10 times per second, directing the hydraulic cylinders to adjust the height of the leveling head, ensuring that the leveling head always stays close to the laser plane. The laser screed machine simultaneously levels and vibrates the concrete to compact it, while a scraper removes any excess concrete. The entire process eliminates the need for control lines and formwork, avoiding the elevation errors caused by traditional manual segmented formwork. In this embodiment, the hydraulic cylinders at both ends of the substrate work together to adjust the height of the leveling head, and the lower end of the lifting rod forms a hinge-like connection with the leveling head. The virtual connection between the transmission rod and the leveling head in the vertical direction does not affect the height adjustment of the leveling head. The transmission rod is in contact with the wall of the insertion hole, so vibration is transmitted through the wall of the insertion hole. The transmission rod can move along the depth direction of the insertion hole.

[0040] When leveling a different type of concrete surface, pull the locking shaft outwards towards the through hole, causing the other end of the locking shaft to retract into the through hole. The locking shafts on opposite sides of the lower end of the hanger quickly separate the hanger from the leveling head. Align the socket of the new leveling head, adapted for different concrete types, with the lower end of the hanger. Simultaneously, pull the locking shaft on the new leveling head outwards towards the through hole, causing the locking shaft to retract into the through hole. Then, insert the lower end of the hanger into the socket. Release the locking shaft; under the elastic thrust of the elastic element, the locking shaft resets and inserts into the locking hole of the hanger, thus quickly connecting the hanger and the leveling head.

[0041] This invention relates to a laser leveling machine for concrete floor construction with a quick-change leveling head to adapt to different construction scenarios. The core innovation of this invention lies in the quick-release connection structure between the leveling head and the hanger rod using a locking shaft and locking hole. The leveling head has sockets at opposite ends, and the lower end of the hanger rod is movably inserted into these sockets. Locking shafts are elastically installed on opposite side walls of the sockets, and locking holes are provided on opposite sides of the lower end of the hanger rod. The locking shafts are detachable and movably inserted into the locking holes. During replacement, simply pull the locking shaft outwards towards the through hole to retract it into the through hole, quickly separating the hanger rod from the leveling head. When installing a new leveling head, align it with the socket and release the locking shaft. The locking shaft automatically resets under the elastic thrust of the elastic element (coil spring) and inserts into the locking hole of the hanger rod. This structural design allows the leveling head to be quickly changed according to different concrete surface scenarios (such as using alloy scrapers for wear-resistant flooring and reinforced vibratory rods for fiber-reinforced concrete), significantly expanding the application range of laser leveling machines and solving the problem that traditional concrete leveling machines have a single leveling head and cannot adapt to different construction needs.

[0042] The laser leveling machine for concrete floor construction of this invention has a base plate equipped with a laser level, and laser levels are installed at both ends of the base plate. The laser level receives signals from the laser transmitter in real time and, in conjunction with the control system, automatically adjusts the hydraulic cylinder at a frequency of approximately ten times per second, ensuring that the leveling head always runs in close contact with the laser reference plane. This automatic laser leveling system ensures the accuracy of the leveling elevation and avoids the elevation errors caused by traditional manual block formwork.

[0043] The laser leveling machine for concrete floor construction of this invention has a vibration component installed on a leveling head, and a vibration motor connected to the leveling head via an adjustable-length transmission rod. Under vibration, the leveling head compacts, tamps, and levels the concrete surface, completing the paving, compaction, and leveling operations in one operation. Compared to traditional manual leveling, this significantly improves construction efficiency and effectively avoids the problem of concrete drying and solidifying before leveling.

[0044] The lower end of the boom of the laser leveling machine for concrete floor construction of the present invention forms a hinge-like connection structure with the socket of the leveling head through a locking shaft. The locking shaft is set along the width direction of the leveling head, and the boom can deflect to a certain extent in the length direction of the leveling head to ensure that the leveling head is in close contact with the concrete surface and improve the leveling quality.

[0045] The first support of the laser leveling machine for concrete floor construction of the present invention is equipped with a vertically arranged hydraulic cylinder, the telescopic end of which is connected to the upper end of the boom. The hydraulic cylinders at both ends of the base plate can work together to independently adjust the height of the leveling head. At the same time, the trolley head is connected to the base plate through a telescopic cylinder, which is arranged along the width direction of the base plate, so that the base plate and the leveling head can extend forward, facilitating continuous operation of the trolley while it is in motion.

[0046] In this invention, the transmission rod and the leveling head of the laser leveling machine for concrete floor construction are connected in a loose manner in the vertical direction. The transmission rod can move along the depth direction of the insertion hole without affecting the height adjustment of the leveling head, while the vibration is effectively transmitted through the hole wall. This design takes into account both the need for efficient vibration transmission and the need for independent height adjustment of the leveling head.

[0047] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention involved in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A laser leveling machine for concrete floor construction, characterized in that, include: A mobile vehicle, wherein a base plate is mounted on the front of the mobile vehicle, and a first bracket is mounted on each of the opposite ends of the base plate; The boom is mounted on the first bracket in a height-adjustable manner; A leveling head has sockets at its two opposite ends. The lower end of the rod is movably inserted into the socket. Locking shafts are elastically installed on the opposite side walls of the socket. Locking holes are opened on the opposite sides of the lower end of the rod. The locking shafts are detachable and movably inserted into the locking holes. A vibration assembly is installed on the leveling head.

2. The laser leveling machine for concrete floor construction according to claim 1, characterized in that, The first bracket is equipped with a vertically arranged hydraulic cylinder, and the telescopic end of the hydraulic cylinder is connected to the upper end of the boom.

3. The laser leveling machine for concrete floor construction according to claim 1, characterized in that, The substrate is equipped with a laser level.

4. The laser leveling machine for concrete floor construction according to claim 3, characterized in that, The laser level is mounted on both ends of the substrate.

5. The laser leveling machine for concrete floor construction according to claim 1, characterized in that, The locking shaft is arranged along the width direction of the leveling head.

6. The laser leveling machine for concrete floor construction according to claim 5, characterized in that, The side of the leveling head is provided with a through hole that communicates with the socket. One end of the locking shaft is elastically installed in the through hole through an elastic element, and the other end of the locking shaft is detachably and rotatably inserted into the locking hole.

7. The laser leveling machine for concrete floor construction according to claim 6, characterized in that, An enlarged diameter hole is formed at the end of the through hole away from the socket. The elastic element is a helical spring, which is housed in the enlarged diameter hole and movably sleeved on the locking shaft. One end of the helical spring is connected to the locking shaft, and the other end of the helical spring is connected to the bottom of the enlarged diameter hole.

8. The laser leveling machine for concrete floor construction according to claim 1, characterized in that, The front of the vehicle is connected to the base plate via a telescopic hydraulic cylinder, which is arranged along the width direction of the base plate.

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