Heavy-duty unloading platform for logistics warehouse and its construction method

Abstract

This invention discloses a heavy-duty unloading platform for a logistics warehouse, comprising a platform plate and a crossbeam. The crossbeam is fixed below the platform plate and includes reinforcing steel bars, cement columns, and stress-reinforcing devices. Stress steel plates are fixed to both ends of the reinforcing steel bars, and two stress steel plates are fixedly installed on the left and right ends of the cement columns. A pressure sensor is provided on the platform plate and connected to the stress-reinforcing devices. This heavy-duty unloading platform for a logistics warehouse, through the use of pressure sensors and stress-reinforcing devices, can provide a freely adjustable stress effect, thus enabling timely and effective stress support when heavy vehicles move onto the platform.

Description

Technical Field

[0001] This invention relates to a logistics warehouse, and more specifically to a heavy-duty unloading platform for a logistics warehouse and its construction method. Background Technology

[0002] Currently, logistics parks are mostly single-story warehouses. To meet the needs of truck traffic, the distance between warehouses is relatively large, resulting in low land utilization. Constructing multi-story warehouses to improve land utilization requires addressing the issue of transporting goods to warehouses on the second and upper floors. Setting up unloading platforms capable of accommodating heavy trucks to the second and upper floors is the most effective way to solve this problem.

[0003] Heavy trucks typically have both significant weight and large size, which limits the span, width, and load-bearing capacity of existing reinforced concrete structures. Even if the upper part of the structure can accommodate heavy trucks, the small span and width would prevent heavy trucks from passing through the lower level. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a heavy unloading platform for logistics warehouses with a high span and strong load-bearing capacity, and its construction method.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a heavy-duty unloading platform for a logistics warehouse, comprising a platform plate and a crossbeam, wherein the crossbeam is fixed below the platform plate, and the crossbeam comprises a stress-reinforcing steel bar, a cement column, and a stress-strengthening device. Both ends of the stress-reinforcing steel bar are fixed with stress-reinforcing steel plates, and the two stress-reinforcing steel plates are fixedly installed on the left and right ends of the cement column. A pressure sensor is provided on the platform plate, and the pressure sensor is connected to the stress-strengthening device so that when pressure is detected, the stress-strengthening device is activated to strengthen the stress applied to the cement column.

[0006] As a further improvement of the present invention, the stress strengthening device includes a retraction mechanism and two reinforcing rods. The retraction mechanism is located in the middle of the cement column. One end of each of the two reinforcing rods extends into the retraction mechanism, and the other end passes through the cement column and is fixed to the stress steel plate. The retraction mechanism is connected to a pressure sensor so that the pressure sensor controls the tightening or loosening of the two reinforcing rods.

[0007] As a further improvement of the present invention, the retraction mechanism includes a rotating bushing and a drive worm gear. The rotating bushing is rotatably disposed inside the cement column. A drive gear is coaxially sleeved at the middle position of the rotating bushing. The drive worm gear rotatably passes through the cement column and meshes with the drive gear so as to be driven by an external motor and thus drive the drive gear to rotate. The end of the reinforcing rod extends into the rotating bushing and is threadedly connected to the rotating bushing.

[0008] As a further improvement of the present invention, the reinforcing rod includes a fixed section, a spring section and an extension section. The fixed section and the extension section are integrally connected to both ends of the spring section. The extension section extends into the rotating bushing and is threadedly connected to the rotating bushing. One end of the fixed section is fixedly installed on the stress steel plate. The cement column is provided with a space for the spring section to move.

[0009] As a further improvement of the present invention, the active space is filled with gravel.

[0010] Another aspect of the present invention provides a construction method, including a platform slab construction step and a crossbeam construction step, wherein the crossbeam construction step specifically includes:

[0011] Step 1: Erect the beam formwork, install the stress-strengthening device and reserved pipe assembly on the beam formwork, and install the prestressed tendon pipes and grouting pipes.

[0012] Step 2: Pour the concrete for the beam and remove the formwork after the concrete has cured and set.

[0013] Step 3: Insert the prestressed steel bars into the prestressed tendon duct, then install jacks at both ends of the beam, and after tensioning the steel bars, anchor them through the prestressed steel plates.

[0014] Step four: Remove the jacks, cut off excess stress reinforcement bars, and pour concrete into the prestressed tendon ducts through the grouting pipe to complete the construction.

[0015] As a further improvement to the present invention, the specific steps for installing the reserved pipe assembly using the stress strengthening device in step one are as follows:

[0016] Step one: After setting up the crossbeam template, install the fixed pipes, movable space pipes, and extension pipes in sequence, and install the axial pipe in the middle of the crossbeam. The fixed pipes, movable space pipes, extension pipes, and axial pipes are connected in sequence.

[0017] As a further improvement of the present invention, in step one, before installing the fixed pipe, the movable space pipe, the extension pipe, and the shaft pipe, the spring segment is first inserted into the movable space pipe, and the rotating shaft sleeve is rotatably installed in the shaft pipe. The fixed segment is located at the left end of the movable space pipe, and the extension segment is located at the right end of the movable space pipe. Then, the fixed pipe is fitted onto the fixed segment and sealed to the left end of the movable space pipe. The extension pipe is fitted onto the extension segment and sealed to the right end of the movable space pipe. The other end of the extension pipe facing away from the movable space pipe is coaxially fixed and sealed to the end of the rotating shaft sleeve.

[0018] As a further improvement of the present invention, in step two, after removing the formwork, a drive channel is opened in the middle of the concrete. The bottom of the drive channel is connected to the shaft pipe. Then, a drive worm is rotatably installed in the drive channel so that the drive worm meshes with the drive gear, and a speed reduction strip is provided at the opening of the drive channel.

[0019] As a further improvement of the present invention, in step three, the stress steel plate is also simultaneously anchored to the fixed section, and in step four, the step of injecting gravel into the active space pipe is also included.

[0020] The beneficial effects of this invention are that, through the combination of platform plates and crossbeams, a material unloading platform structure can be effectively formed. By setting the crossbeams with stress-reinforced steel bars, cement assemblies, and stress-reinforcing devices, a stress-reinforcing concrete structure can be formed, increasing the load-bearing capacity of the crossbeams. On the other hand, a stress-reinforcing method is provided, which can increase the overall load-bearing capacity of the platform by increasing stress when vehicles pass over it. This can better achieve the effect of a platform with high load-bearing capacity and large structural span and large opening. Compared with the existing technology of directly adding more stress-reinforced steel bars, it can avoid the problem of concrete cracking due to excessive stress when the load-bearing capacity is insufficient. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of the crossbeam. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to the embodiments shown in the accompanying drawings.

[0023] Reference Figure 1 As shown in this embodiment, a heavy-duty unloading platform for a logistics warehouse includes a platform plate and a crossbeam. The crossbeam is fixed below the platform plate and includes a stress-reinforcing steel bar 1, a cement column 2, and a stress-reinforcing device 3. Stress-reinforcing steel plates 4 are fixed to both ends of the stress-reinforcing steel bar 1, and two stress-reinforcing steel plates 4 are fixedly installed on the left and right ends of the cement column 2. A pressure sensor is provided on the platform plate, which is connected to the stress-reinforcing device 3. When pressure is detected, the stress-reinforcing device 3 is activated to strengthen the stress applied to the cement column 2. Through the setting of the stress-reinforcing device 3, the stress reinforcement effect can be achieved, thereby avoiding the problem of the cement column 2 cracking due to insufficient stress supply during vehicle passage and the problem of the cement column 2 cracking due to excessive stress when no vehicle passes. The thickness of the crossbeam in this embodiment is thicker than that of the conventional crossbeam in the prior art, so that the stress-reinforcing device 3 is installed on the crossbeam by means of addition, and stress-reinforcing devices 3 are provided on both the upper and lower sides of the crossbeam.

[0024] As an improved specific implementation, the stress strengthening device 3 includes a retraction mechanism 31 and two reinforcing rods 32. The retraction mechanism 31 is located in the middle of the cement column 2. One end of each of the two reinforcing rods 32 extends into the retraction mechanism 31, and the other end passes through the cement column 2 and is fixed to the stress steel plate 4. The retraction mechanism 31 is connected to a pressure sensor so that the two reinforcing rods 32 are tightened or loosened under the control of the pressure sensor. With the above structure, the stress on the stress steel plate 4 can be applied by retracting or releasing the reinforcing rods 32 using the retraction mechanism 31 to achieve a strengthening or releasing effect.

[0025] As an improved specific implementation, the retraction mechanism 31 includes a rotating bushing 311 and a drive worm gear 312. The rotating bushing 311 is rotatably disposed inside the cement column 2. A drive gear 313 is coaxially sleeved at the middle position of the rotating bushing 311. The drive worm gear 312 rotatably passes through the cement column 2 and meshes with the drive gear 313, so as to be driven by an external motor to drive the drive gear 313 to rotate. The end of the reinforcing rod 32 extends into the rotating bushing 311 and is threadedly connected to the rotating bushing 311. With the above structure, the rotating bushing 311 can be rotated by the drive worm gear 312, thereby using the threaded propulsion principle to achieve the effect of tightening and reinforcing stress or relaxing and reducing stress. Moreover, one motor can be used to drive multiple rotating bushings 311 simultaneously, and the motor can be externally mounted, which simplifies the structure of the platform itself and increases the operational stability.

[0026] As an improved specific implementation, the reinforcing rod 32 includes a fixed section 321, a spring section 322, and an extension section 323. The fixed section 321 and the extension section 323 are integrally connected to both ends of the spring section 322. The extension section 323 extends into the rotating bushing 311 and is threadedly connected to the rotating bushing 311. One end of the fixed section 321 is fixedly installed on the stress steel plate 4. The cement column 2 is provided with a movable space for the spring section 322 to move. Through the above structure, the reinforcing stress can be applied elastically. Therefore, during the stress application process, the problem of tooth breakage between the rotating bushing 311 and the extension section 323 can be avoided. At the same time, the stress is applied gradually, which can also avoid the problem of cracking of the cement column 2 caused by the instantaneous application of extremely large stress.

[0027] As an improved embodiment, the active space is filled with gravel. By filling it with gravel, the support of the active space can be increased. At the same time, the gaps between the gravel can be used to reduce the impact on the extension and contraction of the spring segment 322. Moreover, the extension and contraction speed of the spring segment 322 is slow and the stroke is short. Therefore, the gravel will be gradually displaced during the extension and contraction process, so wear is not easy to occur.

[0028] This embodiment provides the following construction method for the aforementioned platform structure, including platform slab construction steps and crossbeam construction steps, wherein the crossbeam construction steps specifically include:

[0029] Step 1: Erect the crossbeam formwork. After erecting the crossbeam formwork, first insert the spring section 322 into the movable space pipe, and rotatably install the rotating bushing 311 inside the shaft pipe. The fixed section 321 is located at the left end of the movable space pipe, and the extension section 323 is located at the right end of the movable space pipe. Then, the fixed pipe is fitted onto the fixed section 321 and sealed to the left end of the movable space pipe. The extension pipe is fitted onto the extension section 323 and sealed to the right end of the movable space pipe. The other end of the extension pipe facing away from the movable space pipe is coaxially fixed and sealed to the end of the rotating bushing 311. Then, the fixed pipe, the movable space pipe, and the extension pipe are installed in sequence. The shaft pipe is installed in the middle of the crossbeam. The fixed pipe, the movable space pipe, the extension pipe, and the shaft pipe are connected in sequence. Install the prestressed tendon pipe and the grouting pipe.

[0030] Step 2: Pour concrete for the beam. After the concrete has cured and formed, remove the formwork. Open a drive channel in the middle of the concrete. The bottom of the drive channel is connected to the shaft pipe. Then, install the drive worm 312 rotatably in the drive channel so that the drive worm 312 meshes with the drive gear 313. A speed reduction strip is provided at the opening of the drive channel.

[0031] Step 3: Insert the prestressed steel bar 1 into the prestressed tendon duct, then install jacks at both ends of the beam, and after tensioning the steel bar, anchor it through the prestressed steel plate 4, while simultaneously anchoring and fixing section 321.

[0032] Step 4: Remove the jacks and cut off the excess stress reinforcement 1. Then, pour concrete into the prestressed tendon duct through the grouting pipe, and simultaneously inject gravel into the active space duct to complete the construction. The concrete is injected through the grouting pipe, and the gravel is also injected through an injection pipe connected to the active space duct.

[0033] In summary, the unloading platform of this embodiment, through the setting of stress strengthening device 3, can achieve an adjustable stress strengthening effect, thus greatly increasing the load-bearing capacity and structural span of the crossbeam.

[0034] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A heavy-duty unloading platform for a logistics warehouse, comprising a platform plate and a crossbeam, wherein the crossbeam is fixed below the platform plate, characterized in that: The crossbeam includes a stress-reinforcing steel bar (1), a cement column (2), and a stress-strengthening device (3). Both ends of the stress-reinforcing steel bar (1) are fixed with stress steel plates (4). The two stress steel plates (4) are fixedly installed on the left and right ends of the cement column (2). The platform plate is equipped with a pressure sensor, which is connected to the stress-strengthening device (3) so that when pressure is detected, the stress-strengthening device (3) is driven to activate and strengthen the stress applied to the cement column (2). The stress strengthening device (3) includes a retracting mechanism (31) and two reinforcing rods (32). The retracting mechanism (31) is located in the middle of the cement column (2). One end of each of the two reinforcing rods (32) extends into the retracting mechanism (31), and the other end passes through the cement column (2) and is fixed to the stress steel plate (4). The retracting mechanism (31) is connected to a pressure sensor to tighten or loosen the two reinforcing rods (32) under the control of the pressure sensor. The retracting mechanism (31) includes a rotating bushing (311) and a drive worm gear (312). The rotating bushing (311) is rotatably installed inside the cement column (2). A drive gear (313) is coaxially sleeved in the middle of the rotating bushing (311). The drive worm gear (312) can... The rotating rod passes through the cement column (2) and meshes with the drive gear (313) to be driven by an external motor, thereby driving the drive gear (313) to rotate. The end of the reinforcing rod (32) extends into the rotating bushing (311) and is threadedly connected to the rotating bushing (311). The reinforcing rod (32) includes a fixed section (321), a spring section (322) and an extension section (323). The fixed section (321) and the extension section (323) are integrally connected to both ends of the spring section (322). The extension section (323) extends into the rotating bushing (311) and is threadedly connected to the rotating bushing (311). One end of the fixed section (321) is fixedly installed on the stress steel plate (4). The cement column (2) is provided with a space for the spring section (322) to move.

2. The heavy-duty unloading platform for logistics warehouses according to claim 1, characterized in that: The activity space is filled with gravel.

3. A construction method for the heavy-duty unloading platform of a logistics warehouse as described in claim 2, characterized in that: This includes the construction steps for the platform slab and the crossbeams, with the crossbeam construction steps specifically including: Step 1: Erect the beam formwork, install stress strengthening devices on the beam formwork (3) Reserve pipe groups, install prestressed tendon pipes and grouting pipes; Step 2: Pour the concrete for the beam and remove the formwork after the concrete has cured and set. Step 3: Insert the prestressed steel bar (1) into the prestressed tendon duct, then install jacks at both ends of the beam, and anchor the steel bar through the prestressed steel plate (4) after tensioning. Step 4: Remove the jacks and cut off the excess stress reinforcement (1), and pour concrete into the prestressed tendon duct through the grouting pipe to complete the construction.

4. The construction method of the heavy-duty unloading platform for a logistics warehouse according to claim 3, characterized in that: The specific steps for installing the reserved pipe assembly in step one (3) are as follows: After the crossbeam template is set up, the fixed pipes, movable space pipes, and extension pipes are installed in sequence, and the axial pipe is installed in the middle of the crossbeam. The fixed pipes, movable space pipes, extension pipes, and axial pipes are connected in sequence.

5. The construction method of the heavy-duty unloading platform for a logistics warehouse according to claim 4, characterized in that: Before installing the fixed pipe, the movable space pipe, the extension pipe, and the shaft pipe in the specific steps of installing the reserved pipe group in the stress strengthening device (3) in step one, the spring segment (322) is first inserted into the movable space pipe, and the rotating bushing (311) is rotatably installed in the shaft pipe. The fixed segment (321) is located at the left end of the movable space pipe, and the extension segment (323) is located at the right end of the movable space pipe. Then, the fixed pipe is fitted onto the fixed segment (321) and sealed to the left end of the movable space pipe. The extension pipe is fitted onto the extension segment (323) and sealed to the right end of the movable space pipe. The other end of the extension pipe facing away from the movable space pipe is coaxially fixed and sealed to the end of the rotating bushing (311).

6. The construction method of the heavy-duty unloading platform for a logistics warehouse according to claim 5, characterized in that: In step two, after removing the formwork, a drive channel is opened in the middle of the concrete. The bottom of the drive channel is connected to the shaft pipe. Then, a drive worm (312) is rotatably installed in the drive channel so that the drive worm (312) meshes with the drive gear (313). A speed reduction belt is provided at the opening of the drive channel.

7. The construction method of the heavy-duty unloading platform for a logistics warehouse according to claim 6, characterized in that: In step three, the stress steel plate (4) is also simultaneously anchored to the fixed section (321), and step four also includes the step of injecting gravel into the active space pipe.

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