Construction long material unloading platform

Abstract

A long construction material unloading platform includes a frame composed of cantilever beams, secondary beams, and side beams. A movable vehicle body slides within the frame, and the movable vehicle body has a first fixed part and a second fixed part. The first fixed part includes two first telescopic rods located on opposite sides of the movable vehicle body, with vertical plates at the ends of the first telescopic rods and pressure plates connected to the tops of the vertical plates. The second fixed part includes at least two third telescopic rods, which are arranged sequentially along the length of the frame. Each of the two third telescopic rods has a plate at its top, and the top of the plate has an anti-slip layer. This utility model discloses a long construction material unloading platform that can realize the transfer of long materials. The long materials remain in a fixed position on the unloading platform, which can effectively prevent the long materials from moving horizontally and vertically. At the same time, this unloading platform can avoid secondary manual handling, improve the conveying speed of long materials, and reduce the labor intensity during the conveying process.

Description

Technical Field

[0001] This utility model belongs to the technical field of unloading platforms, and in particular relates to an unloading platform for long construction materials. Background Technology

[0002] Construction unloading platforms are temporary facilities used for transferring materials at construction sites, and they are mainly divided into the following three types:

[0003] Ground-mounted unloading platform: It is mostly constructed using steel pipes and is built layer by layer as the construction progresses. It is often used in the construction of multi-story buildings, has good stability, but occupies a large area of ​​the site.

[0004] Cantilevered unloading platform: Mostly mobile, it can be moved to the upper level for repeated use after the lower level is demolded. It is generally used for high-rise building construction, does not occupy ground space, but has high requirements for anchoring and tying.

[0005] Telescopic unloading platform: It has telescopic function, the cantilever length can be varied within a certain range to adapt to different floor heights, has a high safe working load, does not require pre-embedded parts, and is easy to install, but the structure is relatively complex.

[0006] Currently, cantilevered unloading platforms are more commonly used.

[0007] After the hoisted construction materials are placed on the cantilevered unloading platform, they need to be manually pulled into the building, which undoubtedly increases the safety risk. To solve the above technical problems, the existing technology provides an unloading platform with a sliding trolley, which users only need to pull into the building.

[0008] For example, patent application CN112576047A, published on March 30, 2021, discloses a mobile sliding cantilever unloading platform, including a lower cantilevered steel support base and an upper sliding unloading platform, which are slidably connected. The lower cantilevered steel support base includes an I-beam main beam and an I-beam secondary beam. The two ends of the secondary beam are fixedly connected to the main beam by a first bolt. A first fixing block is fixed to the rear end face of the main beam. A first baffle is provided behind the secondary beam, and second fixing blocks are fixed to both ends of the baffle. The first fixing blocks and the second fixing blocks are fitted together, and the I-beam main beam is fixed to both ends of the first baffle. The upper sliding unloading platform includes an openable door panel, a platform baffle, a platform base plate, and a manual limit handle. This platform features convenient installation, fast disassembly, and a high safety factor.

[0009] However, when this solution is applied to the unloading platform of long construction materials, it will be unstable and prone to slippage of long materials and shift of the center of gravity.

[0010] Long material unloading platforms (mainly used for transporting slender materials such as steel pipes, structural steel, and timber) are key temporary facilities on construction sites, bridges, and steel structures.

[0011] Due to their large length (usually over 6 meters, some reaching 12-18 meters) and dispersed center of gravity, long materials cannot be transported by ordinary material hoists or construction elevators. Therefore, unloading platforms become the only efficient transfer tool, with main application scenarios including:

[0012] High-rise building construction: used for transporting scaffolding steel pipes and formwork support steel (such as H-beams and square steel) from the ground to the floors; steel structure engineering: transporting steel components (such as purlins and tie rods), embedded parts, etc.; municipal / bridge engineering: transporting extra-long materials such as steel trusses and corrugated pipes in the construction of elevated roads and bridges.

[0013] Its demand characteristics are as follows: with the increase in building height (such as super high-rise buildings) and the increase in the proportion of steel structure (promotion of prefabricated buildings), the demand for transportation of long materials (especially ultra-long materials) continues to rise, which places higher demands on the platform's "anti-overturning ability, cantilever adaptability and load stability".

[0014] The main hidden danger of long material unloading platforms at most construction sites is that long materials are prone to slipping and falling when transported on the unloading platform. Summary of the Invention

[0015] The present invention aims to provide a highly stable and easy-to-use unloading platform for long construction materials.

[0016] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a construction long material unloading platform, comprising a frame composed of cantilever beams, secondary beams and side beams, a movable vehicle body slidably disposed within the frame, and a first fixing part and a second fixing part disposed within the movable vehicle body;

[0017] The first fixing part includes two first telescopic rods located on both sides of the moving vehicle body, the two first telescopic rods are arranged opposite each other, the ends of the first telescopic rods are provided with vertical plates, and the top of the vertical plates are connected to pressure plates;

[0018] The second fixing part includes at least two third telescopic rods, which are arranged sequentially along the length of the frame; each of the two third telescopic rods has a receiving plate at its top, and the top of the receiving plate has an anti-slip layer.

[0019] The receiving plate is equipped with a clamp, which includes a clamp plate that is rotatably mounted in the vertical direction. The clamp plate is rotatably connected to the plate body and has an arc shape that bulges outward.

[0020] Two clamps are installed on the same receiving plate, with the two clamps located near the two ends of the receiving plate respectively.

[0021] A second telescopic rod is connected to the vertical plate. The second telescopic rod is set vertically, and the pressure plate is connected to the telescopic end of the second telescopic rod.

[0022] The frame is equipped with rails, and the bottom of the moving vehicle is equipped with wheels that slide along the rails. The wheels are rolled within the rails.

[0023] A horizontally installed protective frame is set on the outside of the frame, and a protective net is connected to the protective frame.

[0024] Rubber protective pads are installed on the inner side of both the vertical plate and the pressure plate.

[0025] Through the above technical solutions, the technical effects of the present invention are as follows: 1. The present invention can realize the transfer of long materials. The long materials are always in a fixed position on the unloading platform, which can effectively prevent the long materials from moving in the horizontal and vertical directions. At the same time, the unloading platform can avoid secondary manual handling, improve the conveying speed of long materials, and reduce the labor intensity during the conveying process; 2. The set mobile vehicle body can move on the frame, avoiding secondary handling of long materials and improving the conveying speed of long materials; 3. The set first fixing part and second fixing part effectively realize the fixation of long materials at the front and middle of the mobile vehicle body; 4. The set guide plate can effectively ensure that the long materials enter the middle of the mobile vehicle body and avoid the phenomenon of center of gravity shift. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Example 1;

[0027] Figure 2 This is a schematic diagram of the frame structure;

[0028] Figure 3 This is a schematic diagram of the mobile vehicle structure;

[0029] Figure 4 This is a schematic diagram of the moving vehicle structure after a long material is placed inside;

[0030] Figure 5 This is a schematic diagram of the structure of Example 3;

[0031] 1-Mobile vehicle body, 2-Frame, 3-Railway, 4-Wheel body, 5-Protective net, 6-Protective frame, 7-Cantilever beam, 8-Secondary beam, 9-Side beam, 10-Safety plate, 11-Vertical plate, 12-Second telescopic rod, 13-Pressure plate, 14-Third telescopic rod, 15-Supporting plate, 16-Clamping plate, 17-Long material, 18-First telescopic rod, 19-Guide plate, 20-Fourth telescopic rod. Detailed Implementation

[0032] Example 1: A material unloading platform for long construction materials, such as... Figures 1-4As shown, the frame 2 consists of cantilever beams 7, secondary beams 8, and side beams 9. The cantilever beams 7 are connected to the building, and the connection method is a mature existing technology. This embodiment does not involve any improvement to this part.

[0033] The rear end of frame 2 is open to allow materials to enter and exit normally. Two cantilever beams 7 are installed along the length, with secondary beams 8 connecting them. Side beams 9 connect the two sides of the cantilever beams 7. One end of the tension wire rope is connected to the cantilever beam 7, and the other end is connected to the upper structure to ensure the safety of the entire unloading platform.

[0034] A movable vehicle body 1 is slidably disposed within the frame 2. The movable vehicle body 1 includes a base plate, side plates, and a rear baffle. The side plates are connected to both sides of the base plate. The rear baffle is connected to the rear of the base plate. When the rear baffle is opened, materials can enter the movable vehicle body 1. Wheels 4 are provided at the bottom of the base plate. The movement of the wheels 4 can drive the movable vehicle body 1 to move.

[0035] A track 3 is installed inside the frame 2 to accommodate the wheels 4. The wheels 4 roll within the track 3, which in turn moves the mobile vehicle 1. To ensure safety, a limit stop is provided at the end of the track 3 to prevent the wheels 4 from detaching from the track 3. In this embodiment, the limit stop is not shown in the figure. At the same time, two safety plates 10 are provided at the rear end of the frame 2, which are respectively connected to the two sides. There is a gap between the two safety plates 10. The two safety plates 10 are arranged opposite each other. If the mobile vehicle 1 accidentally breaks through the limit stop, it will hit the safety plate 10, which also prevents the mobile vehicle 1 from falling out of the frame 2.

[0036] By sliding the mobile car body 1, the long material 17 is avoided from being moved twice, which reduces the labor intensity of workers. Once the long material 17 is placed on the mobile car body 1, the long material 17 can be moved into the building by moving the mobile car body 1. The labor efficiency is high and the labor intensity is high.

[0037] The mobile vehicle body 1 is provided with a first fixing part and a second fixing part. The first fixing part and the second fixing part are respectively used to fix the front and middle parts of the long material 17, effectively preventing the long material 17 from moving and shaking on the mobile vehicle body 1, improving the stability of the long material 17, and thus ensuring the safety of the long material 17 during the transfer process and avoiding safety accidents.

[0038] The specific implementation method of the first fixed part is as follows:

[0039] The first fixing part includes two first telescopic rods 18 located on opposite sides of the mobile vehicle body 1. The two first telescopic rods 18 are arranged opposite each other, that is, one end of one first telescopic rod 18 is connected to one of the inner sides of the mobile vehicle body 1, and the other end is suspended and facing the other inner side of the mobile vehicle body 1. The other first telescopic rod 18 is connected to the other inner side of the mobile vehicle body 1, and the other end is suspended.

[0040] A vertical plate 11 is provided at the end of the first telescopic rod 18. The vertical plate 11 is vertically arranged, and a pressure plate 13 is connected to the top of the vertical plate 11. In this embodiment, the pressure plate 13 can be raised and lowered relative to the vertical plate 11. This is achieved by connecting a vertically arranged second telescopic rod 12 to the vertical plate 11. The pressure plate 13 is connected to the telescopic end of the second telescopic rod 12. The pressure plate 13 can be raised and lowered relative to the vertical plate 11 by extending and retracting the second telescopic rod 12.

[0041] During implementation: the two first telescopic rods 18 move toward the middle of the moving vehicle body 1 respectively. When the vertical plates 11 of the two rods contact the long material 17, the first telescopic rods 18 stop extending. Then, the second telescopic rod 12 extends until the pressure plate 13 contacts the long material 17. In this way, the pressure plate 13 and the vertical plate 11 restrict the movement of the long material 17 in the vertical and horizontal directions respectively, ensuring the stability of the end of the long material 17.

[0042] To improve the working effect, in this embodiment, rubber anti-slip pads are provided on the inner side of the pressure plate 13 and the inner side of the vertical plate 11. By providing rubber anti-slip pads, the friction between the pressure plate 13 and the vertical plate 11 and the long material 17 is increased, and its stability is further improved.

[0043] The above is the first fixing part, which improves the stability of the front end of the long material 17.

[0044] The second fixing part can fix the middle part of the long material 17. The second fixing part includes at least two third telescopic rods 14. The two third telescopic rods 14 are arranged sequentially along the length direction of the frame 2, and the last third telescopic rod 14 is adjacent to the rear baffle of the moving vehicle body 1.

[0045] A receiving plate 15 is provided at the top of each of the two third telescopic rods 14. The top of the receiving plate 15 is provided with an anti-slip layer. When in use, after the long material 17 is placed on the moving vehicle body 1, the extension of the third telescopic rod 14 makes the surface of the receiving plate 15 fit the long material 17. This prevents the long material 17 from deforming due to suspension and improves the stability of the contact between the long material 17 and the moving vehicle body 1.

[0046] In this embodiment, the first telescopic rod 18, the second telescopic rod 12, and the third telescopic rod 14 are mature existing technologies. Commonly used telescopic rods can be selected, such as a rod housed within a sleeve, which can slide within the sleeve to achieve telescopic extension and retraction. Alternatively, an electric telescopic rod can be used, as its extension and retraction are mature existing technologies, and this embodiment does not involve improvements in this area. During operation, workers operate buttons inside the building to extend or retract the first telescopic rod 18, the second telescopic rod 12, and the third telescopic rod 14. Their contact with the long material 17 can be observed visually. The operation methods of the first, second, and third telescopic rods are not within the scope of protection of this application; existing technologies can be directly used.

[0047] As a variation of this embodiment, the extension and retraction of the first telescopic rod 18, the second telescopic rod 12, and the third telescopic rod 14 can also be controlled by a microcontroller and sensors. In this case, pressure sensors (model FSR402 resistive thin-film pressure sensors) are provided on the inner surfaces of the receiving plate 15, the vertical plate 11, and the pressure plate 13. The signal output terminal of the pressure sensor is connected to the input terminal of a linear voltage conversion module (model LM1117), and the signal output terminal of the linear voltage conversion module is connected to the signal input terminal (pin PA0) of the microcontroller (model STM32F103C8T6). The microcontroller outputs a signal to control the extension and retraction of the first telescopic rod 18, the second telescopic rod 12, and the third telescopic rod 14. During operation, the pressure sensor collects the pressure signals between the inner surfaces of the receiving plate 15, vertical plate 11, and pressure plate 13 and the long material 17, and transmits the collected pressure signals to the microcontroller. The microcontroller compares the received pressure signals with a threshold. When the pressure signal reaches the threshold, it indicates that the material is tightly adhered. At this time, the microcontroller outputs a signal to the corresponding motor driver chip (model L298N), which drives the first telescopic rod 18, the second telescopic rod 12, and the third telescopic rod 14. The process of the pressure sensor collecting pressure signals and transmitting them to the microcontroller, and the microcontroller controlling the extension and retraction of the electric telescopic rods based on the comparison of the received signals with a threshold, is a mature existing technology, and its implementation will not be described in detail in this embodiment. The microcontroller and pressure sensor, among other control components, are not within the scope of this application and are not shown in the accompanying drawings.

[0048] Two clamps are provided on the receiving plate 15, located at both ends of the receiving plate 15 respectively. Each clamp includes a clamp plate 16 that can be rotatably arranged in the vertical direction, wherein the clamp plate 16 is rotatably connected to the receiving plate 15. The clamp plate 16 is an arc shape that convexes outward, thereby ensuring that the clamp plate 16 is in full contact with the long material 17 and restricting the movement of the long material 17.

[0049] During operation, the two clamping plates 16 on the receiving plate 15 rotate downwards, locking the long material 17 and restricting its horizontal movement. In this embodiment, the two clamping plates 16 can be directly hinged to the receiving plate 15, and can be manually rotated on the receiving plate 15. This implementation method is a mature existing technology.

[0050] Of course, as an alternative to this embodiment, the rotation of the clamp plate 16 on the receiving plate 15 can also be achieved by a motor. Specifically, a motor is installed on the receiving plate 15, and the output shaft of the motor is connected to the clamp plate 16 through a reducer. The output shaft of the motor drives the clamp plate 16 to rotate on the receiving plate 15.

[0051] In this embodiment, the control method for motor rotation can be as follows: pressure sensors (FSR402 resistive thin-film pressure sensors) are uniformly distributed on the inner surface of the fixture plate 16. The signal output terminal of the pressure sensor is connected to the input terminal of a linear voltage conversion module (LM1117). The signal output terminal of the linear voltage conversion module is connected to the signal input terminal (pin PA0) of a microcontroller (STM32F103C8T6). The signal output terminal of the microcontroller is connected to a second motor driver chip (L298N). The second motor driver chip drives the motor. Controlling the motor via a motor driver chip using a microcontroller is a mature existing technology, and this application does not involve improvements to this solution.

[0052] When the clamping plate 16 moves upward and contacts the long material 17, the microcontroller outputs a signal to the second motor driver chip, causing the motor to rotate and drive the clamping plate 16 to rotate downward and fit onto the long material 17. To achieve automatic control of the motor rotation, a pressure sensor can also be installed on the inner side of the clamping plate 16. The signal output terminal of the pressure sensor is connected to the signal input terminal of the microcontroller, and the microcontroller outputs a signal to the second motor driver chip. In this way, the pressure sensor collects a signal, and when the microcontroller determines that a threshold has been reached, it outputs a signal to the second motor driver chip, causing the motor to stop working and its output shaft to cease rotation.

[0053] In this embodiment, when the long material 17 needs to be removed, pressing the reset button will cause the microcontroller to output a signal that resets the first telescopic rod 18, the second telescopic rod 12, the third telescopic rod 14, and the motor.

[0054] In this embodiment, the stability of the long material 17 on the moving vehicle body 1 is improved by setting the first fixing part and the second fixing part, thus ensuring safety during the transfer process.

[0055] In this embodiment, to further ensure safety, a horizontally arranged protective frame 6 is provided on the outside of the frame 2, and a protective net 5 is connected to the protective frame 6 to prevent objects from falling from heights.

[0056] Example 2 differs from Example 1 in that a protective net 5 is also provided at the bottom of the frame 2 to ensure safety.

[0057] Example 3, the difference between this example and Example 1 is as follows: Figure 5 As shown, to ensure the long material 17 smoothly enters the middle of the mobile vehicle body 1, guide plates 19 are rotatably installed on the inner side of the mobile vehicle body 1. There are two guide plates 19, which are respectively rotatably installed on the two inner sides of the mobile vehicle body 1. In use, when the guide plates 19 are opened, both guide plates 19 are tilted downwards simultaneously, which can guide the long material 17 to the appropriate position on the mobile vehicle body 1. Simply place the long material 17 between the two guide plates 19, and as the two guide plates 19 rotate, they will rotate downwards, causing the long material 17 to fall from between the two guide plates 19 onto the mobile vehicle body 1. This ensures the position of the long material 17 on the mobile vehicle body 1 and avoids the problem of the unloading platform tipping over due to uneven load distribution.

[0058] In order to drive the rotation of the guide plate 19, a fourth telescopic rod 20 is hinged to the inner side of the moving vehicle body 1. The telescopic end of the fourth telescopic rod 20 is hinged to the outer side of the guide plate 19, and the upper end of the guide plate 19 is hinged to the inner side of the moving vehicle body 1.

[0059] In the initial state, both fourth telescopic rods 20 are extended simultaneously by a set distance, causing the long material 17 to fall between and onto the two guide plates 19. Subsequently, the two fourth telescopic rods 20 retract synchronously and at the same speed, causing the guide plates 19 to tilt downwards, with the long material 17 always positioned between the two guide plates 19. This continues until the long material 17 slides down from between the two guide plates 19 onto the moving vehicle 1, where it is also located at the center of the moving vehicle 1, ensuring the center of gravity is maintained. The fourth telescopic rods 20 are also electrically operated, requiring only manual control of their extension and retraction during operation. When transferring the long material 17, the tower crane transfers the long material 17 to the unloading platform. The crane is manually powered, causing the electric push rod to tilt downwards. At this time, the distance between the two guide plates 19 is less than the width of the long material 17. The long material 17 will not fall directly into the moving vehicle 1, but will slide into the space between the two guide plates 19 under the action of gravity. The electric push rod continues to work, shortens, and drives the two guide plates 19 to rotate downwards. The long material 17 is always located between the two guide plates 19 until the working of the electric push rod makes the distance between the two guide plates 19 greater than or equal to the width of the long material 17. The long material 17 then slides down from the space between the two guide plates 19 and onto the moving vehicle 1, where it will be located at the center of the moving vehicle 1.

[0060] After the long material 17 falls into the moving vehicle body 1, the first telescopic rod 18 extends so that the vertical plate 11 and the receiving plate 15 both come into contact with the long material 17; the second telescopic rod 12 and the third telescopic rod 14 extend so that the pressure rod and the clamp plate 16 also come into contact with the long material 17, which together ensure the stability of the long material 17.

[0061] This utility model discloses a long material unloading platform for construction, which can realize the transfer of long materials 17. The long material 17 is always in a fixed position on the unloading platform, which can effectively prevent the long material 17 from moving in the horizontal and vertical directions. At the same time, this unloading platform can avoid secondary manual handling, improve the conveying speed of long materials 17, and reduce the labor intensity during the conveying process.

Claims

1. A construction long material unloading platform, comprising a frame composed of a cantilever beam, a secondary beam and a side beam, characterized in that: A movable vehicle body is slidably mounted within the frame, and a first fixing part and a second fixing part are provided inside the movable vehicle body; The first fixing part includes two first telescopic rods located on both sides of the moving vehicle body, the two first telescopic rods are arranged opposite each other, the ends of the first telescopic rods are provided with vertical plates, and the top of the vertical plates are connected to pressure plates; The second fixing part includes at least two third telescopic rods, which are arranged sequentially along the length of the frame; each of the two third telescopic rods has a receiving plate at its top, and the top of the receiving plate has an anti-slip layer.

2. The unloading platform for long construction materials according to claim 1, characterized in that: The receiving plate is equipped with a clamp, which includes a clamp plate that is rotatably mounted in the vertical direction. The clamp plate is rotatably connected to the plate body and has an arc shape that bulges outward.

3. The unloading platform for long construction materials as described in claim 2, characterized in that: Two clamps are installed on the same receiving plate, with the two clamps located near the two ends of the receiving plate respectively.

4. The unloading platform for long construction materials as described in claim 3, characterized in that: A second telescopic rod is connected to the vertical plate. The second telescopic rod is set vertically, and the pressure plate is connected to the telescopic end of the second telescopic rod.

5. The unloading platform for long construction materials as described in claim 4, characterized in that: The frame is equipped with rails, and the bottom of the moving vehicle is equipped with wheels that slide along the rails. The wheels are rolled within the rails.

6. The unloading platform for long construction materials as described in claim 5, characterized in that: A horizontally installed protective frame is set on the outside of the frame, and a protective net is connected to the protective frame.

7. The unloading platform for long construction materials as described in claim 6, characterized in that: Rubber protective pads are installed on the inner side of both the vertical plate and the pressure plate.

Images