A discharge platform for construction projects that can alarm for overloading

Abstract

The present invention relates to the technical field of construction equipment, and discloses a discharging platform for construction projects with overload alarm, including a fixed rod, a support plate, an extended support plate, side baffles, a rear baffle, a first fixed steel rope, etc.; a support plate is installed on the fixed rod, side baffles are symmetrically fixed on the support plate, an extended support plate is slidably arranged in the support plate, a rear baffle is fixed on the extended support plate, and a first fixed steel rope and a second fixed steel rope are symmetrically fixed on the support plate. This device has a load limit, and the internal weighing sensor will weigh the weight of the loaded materials in real time. When the materials loaded in the discharging platform exceed the load limit, the weighing sensor will issue an overload alarm.

Description

Technical Field

[0001] The present invention relates to the technical field of construction equipment, and in particular, to a discharging platform for construction projects that can alarm for overloading. Background Art

[0002] Discharging platforms (also known as construction platforms) are widely used in high-rise building construction. Usually, they are detachable and assembled for overhanging installation. The discharging platform can reduce the trouble of transferring relevant materials and equipment inside the building, and directly cooperate with the external tower crane for transfer operations from the overhanging discharging platform, improving construction efficiency.

[0003] However, there are still certain risks when using the discharging platform. Excessive loaded materials may cause the weight of the discharging platform to exceed the load capacity of the tower crane, which may lead to overloading of the tower crane and pose certain safety hazards; when loading materials, the length of the materials may exceed the length of the discharging platform, and the long end of the materials may slide down in the air during transfer, forming falling objects from a height and affecting the construction process; moreover, working on a discharging platform without protection at the top and on both sides also increases the safety hazards for workers. Summary of the Invention

[0004] In order to solve the above problems, it is necessary to design a discharging platform for construction projects that can protect the safety of workers and alarm for overloading.

[0005] The technical solution of the present invention: A discharging platform for construction projects that can alarm for overloading, including a fixed rod, a support plate, an extended support plate, side baffles, a rear baffle, a first fixed steel rope, a second fixed steel rope, a weighing sensor, and an extension mechanism. The support plate is installed on the fixed rod, side baffles are symmetrically fixed on the support plate, an extended support plate is slidably arranged inside the support plate, a rear baffle is fixed on the extended support plate, the first fixed steel rope and the second fixed steel rope are symmetrically fixed on the support plate, the weighing sensor is installed on the support plate, and the extension mechanism is installed at the bottom of the support plate, and the extension mechanism can make the discharging platform extend backward.

[0006] Furthermore, the extension mechanism includes extension side plates, a fixing plate, an extension motor, a driving gear, a driven gear, an extension lead screw, and an extension sliding sleeve. The extension side plates are slidably arranged inside the side baffles, the extension side plates are fixedly connected to the rear baffle, the fixing plate is fixedly connected in the fixed rod, the extension motor is installed on the fixing plate, the driving gear is installed on the output shaft of the extension motor, the extension lead screw is rotatably arranged at the bottom of the support plate, the driven gear is fixed at the front end of the extension lead screw, the driven gear meshes with the driving gear, and the extension sliding sleeve is threadedly connected to the extension lead screw, and one end of the extension sliding sleeve passes through the support plate and is fixedly connected to the rear baffle.

[0007] Furthermore, it further includes a connecting guide rod, a supporting bottom plate, an electric slider, a sliding plate, a flipping protection plate, an extended protection plate, a rotating rod, a sliding pull rod, an extended sliding plate, a connecting spring, and a telescopic rod. Connecting guide rods are fixed on both the fixing plate and the rear baffle. A supporting bottom plate is fixed inside the two connecting guide rods. An electric slider is provided on the supporting bottom plate. A sliding plate is fixed on the electric slider. The sliding plate is rotatably connected to the flipping protection plate through a telescopic rod. An extended protection plate is slidably arranged inside the flipping protection plate. Rotating rods are rotatably arranged on both the flipping protection plate and the extended protection plate. A sliding pull rod is fixed on the rotating rod. The sliding pull rod is slidably connected to the connecting guide rod. An extended sliding plate is slidably arranged inside the sliding plate. A connecting spring is arranged between the extended sliding plate and the sliding plate. The extended sliding plate and the extended protection plate are rotatably connected through a telescopic rod.

[0008] Furthermore, it further includes a sliding pedal, a fixed guide rod, a top-out spring, and a locking component. A sliding pedal is slidably arranged inside the support plate. A fixed guide rod is arranged inside the fixed rod. The sliding pedal is slidably connected to the fixed guide rod. A top-out spring is arranged between the sliding pedal and the support plate. The locking component is installed on the support plate and is used to limit the position of the sliding pedal.

[0009] Furthermore, the locking component includes a support column, a fixed guide rod, a sliding limit rod, an unlocking spring, and a sliding bent rod. A fixed guide rod is fixed on the support plate. A sliding limit rod is slidably arranged on the fixed guide rod. One end of the sliding limit rod passes through the fixed rod and the fixed guide rod and is slidably connected thereto. An unlocking spring is arranged between the sliding limit rod and the fixed rod. A sliding bent rod is slidably arranged on the support plate. A support column is fixed on the rotating rod at the front end of the flipping protection plate. The sliding bent rod and the support column cooperate to limit the position of the sliding limit rod.

[0010] Furthermore, it further includes a rain shielding mechanism. The rain shielding mechanism is installed on the side baffle and is used to prevent rainwater from falling into the unloading platform.

[0011] Furthermore, the rain shielding mechanism includes a connecting rod, a limit pin, a flipping shielding plate, a fixed seat, a rotating shaft, a limit jack, and a torsion spring. A fixed seat is fixed on the side baffle. A rotating shaft is rotatably arranged on the fixed seat. A flipping shielding plate is fixed outside the rotating shaft. A torsion spring is arranged between the flipping shielding plate and the fixed seat. A limit jack is opened at the front end of the rotating shaft. A connecting rod is fixed on the sliding pedal. A limit pin is fixed on each connecting rod. The limit pin is inserted into the limit jack to limit the position of the flipping shielding plate.

[0012] Furthermore, the rain shielding mechanism further includes an extended shielding plate, a fixed guide frame, and a connecting slider. An extended shielding plate is slidably arranged inside the flipping shielding plate. A fixed guide frame is fixed on the extended side plate. A connecting slider is slidably arranged inside the fixed guide frame. The connecting slider is fixedly connected to the extended shielding plate.

[0013] The beneficial effects are as follows: 1. This device is equipped with a load limit, and the weighing sensor inside will weigh the weight of the loaded materials in real time. When the materials loaded on the unloading platform exceed the load limit, the weighing sensor will issue an overload alarm, realizing the function of overload alarm.

[0014] 2. When the length of the materials to be loaded is too long, the extension mechanism can be started. The extension mechanism will drive the extension sliding sleeve to slide backward through the extension screw rod, and at the same time push the rear baffle backward. The extension support plate and the side extension plate will also extend backward accordingly, realizing the function of changing the length of the load platform.

[0015] 3. The unloading platform in this application is provided with flip protection devices that can extend outward on both sides. During installation, the electric slider can drive the sliding plate and the flipping protection plate to slide outward. The sliding pull rod and the connecting guide rod cooperate to make the flipping protection plate flip upward, which can reduce the safety hazard of falling objects from height during construction, and this flip protection device can be retracted at any time, facilitating transportation and movement.

[0016] 4. After the unloading platform is set up, there is still a certain gap between the unloading platform and the scaffolding. When the flipping protection plate slides outward, it can drive the locking component to operate, so that the locking component releases the restriction on the sliding pedal. At this time, the sliding pedal can be pushed forward by the spring. At this time, the sliding pedal will fill the gap between the unloading platform and the scaffolding, improving the safety of loading and unloading materials, and at the same time preventing materials from falling downward through the gap between the unloading platform and the scaffolding.

[0017] 5. When the electric slider slides outward, it will drive the rotating rod and the support column to slide outward through the flipping protection plate, so that the support column disengages from the bottom of the sliding bent rod and releases the restriction on the sliding limit rod. At this time, the unlocking spring will push the sliding limit rod outward from the fixed guide rod and the fixed rod, enabling the sliding pedal to slide out automatically, realizing the function of automatically sliding the sliding pedal forward while protecting both sides of the unloading platform.

[0018] 6. The unloading platform in this application is also provided with a rain shielding mechanism that can flip upward. In rainy weather, the rain shielding mechanism can separate the rainwater, preventing the rainwater from falling into the unloading platform and protecting the materials piled up in the unloading platform from being eroded by the rain. Moreover, the flipping cover plate and the extension cover plate in the rain shielding mechanism of this application can also prevent falling objects from hitting the workers working in the unloading platform, playing a certain protective role.

[0019] 7. Each mechanism in this application can cooperate with the extension mechanism to extend backward to smoothly change the length of the unloading platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of the whole invention.

[0021] Figure 2 This is a partial structural schematic diagram of the extension mechanism of the present invention.

[0022] Figure 3 This is a cross-sectional structural schematic diagram of the sliding plate of the present invention.

[0023] Figure 4 This is a structural schematic diagram of the sliding bottom plate of the present invention.

[0024] Figure 5 This is a structural schematic diagram at the sliding pedal of the present invention.

[0025] Figure 6 This is the structure of the locking mechanism of the present invention Figure 5 An enlarged schematic diagram at position A.

[0026] Figure 7 This is a structural schematic diagram after the flipping protection plate of the present invention is unfolded.

[0027] Figure 8 This is a partial structural schematic diagram of the rain shielding mechanism of the present invention.

[0028] Figure 9 This is the structure at the fixed seat of the present invention Figure 8 An enlarged schematic diagram at position B.

[0029] Figure 10 This is a structural schematic diagram at the fixed guide frame of the present invention.

[0030] Names and serial numbers of components in the figure: 1. Fixed rod, 101. Support plate, 102. Extension support plate, 103. Side baffle, 1031. Extension side plate, 104. Rear baffle, 105. First fixed steel cable, 106. Second fixed steel cable, 107. Weighing sensor, 2. Fixed plate, 201. Extension motor, 202. Driving gear, 203. Driven gear, 204. Extension lead screw, 205. Extension sliding sleeve, 3. Connecting guide rod, 301. Support bottom plate, 302. Electric slider, 303. Sliding plate, 304. Flipping protection plate, 3041. Extension protection plate, 3042. Rotating rod, 3043. Sliding pull rod, 3044. Support column, 305. Extension sliding plate, 306. Connecting spring, 307. Expansion rod, 4. Sliding pedal, 401. Connecting rod, 402. Limit pin, 403. Fixed guide rod, 4031. Fixed guide bar, 4032. Sliding limit rod, 4033. Unlocking spring, 4034. Sliding bent rod, 404. Ejecting spring, 5. Flipping cover plate, 5001. Extension cover plate, 501. Fixed seat, 502. Rotating shaft, 5021. Limit jack, 503. Torsion spring, 504. Fixed guide frame, 505. Connecting slider. Detailed implementation manners

[0031] The preferred technical solutions of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] Embodiment 1

[0033] A discharge platform for construction projects with overload alarm, as Figures 1-10 shown, includes a fixed rod 1, a support plate 101, an extended support plate 102, side baffles 103, a rear baffle 104, a first fixed steel cable 105, a second fixed steel cable 106, a weighing sensor 107 and an extension mechanism. The fixed rod 1 is installed with the support plate 101. The support plate 101 supports the materials in the discharge platform. The side baffles 103 are symmetrically fixed on the support plate 101. The side baffles 103 block the materials in the discharge platform from the side to prevent the materials from falling downward from the side. The extended support plate 102 is slidably arranged in the support plate 101. The rear baffle 104 is fixed on the extended support plate 102. The first fixed steel cable 105 and the second fixed steel cable 106 are symmetrically fixed on the support plate 101. The first fixed steel cable 105 and the second fixed steel cable 106 play a role in strengthening the fixation to make the discharge platform more stable. The weighing sensor 107 is installed on the support plate 101. The weighing sensor 107 is used to detect the weight of the accumulated materials on the discharge platform. When the weight of the materials exceeds the specified load capacity, the weighing sensor 107 will issue an alarm for reminder. The extension mechanism is installed at the bottom of the support plate 101. The extension mechanism can make the discharge platform extend backward.

[0034] During installation, first fix the fixed rod 1 in the wall, then fix the two first fixed steel cables 105 in the wall of the upper layer, and then fix the second fixed steel cable 106 in the wall at a higher position to ensure the stability of the discharge platform. During use, place the materials on the discharge platform. The weighing sensor 107 in the discharge platform will always weigh the weight of the materials in the discharge platform. When the materials in the discharge platform are too much and exceed the specified load upper limit, the weighing sensor 107 will issue an alarm. When the materials placed in the discharge platform are too long, the extension mechanism can be started. The extension mechanism can make the discharge platform extend outward by a certain distance. When the required length is reached, turn off the extension mechanism. At this time, the materials can be placed in the discharge platform to realize the functions of overload alarm and increasing the load length.

[0035] Embodiment 2

[0036] On the basis of Embodiment 1, as Figure 1 and Figure 2As shown, the extension mechanism includes an extension side plate 1031, a fixed plate 2, an extension motor 201, a driving gear 202, a driven gear 203, an extension screw rod 204 and an extension sliding sleeve 205. The extension side plate 1031 is slidably arranged inside the side baffle 103 and can slide backward out of the side baffle 103. The extension side plate 1031 is fixedly connected to the rear baffle 104. The fixed plate 2 is fixedly connected inside the fixed rod 1. The extension motor 201 is installed on the fixed plate 2. The driving gear 202 is installed on the output shaft of the extension motor 201. The extension motor 201 is used to drive the driving gear 202 to rotate. The extension screw rod 204 is rotatably arranged at the bottom of the support plate 101. The driven gear 203 is fixed at the front end of the extension screw rod 204. The driven gear 203 meshes with the driving gear 202. The driving gear 202 can drive the extension screw rod 204 to rotate through the driven gear 203. The extension sliding sleeve 205 is threadedly connected to the extension screw rod 204. One end of the extension sliding sleeve 205 passes through the support plate 101 and is fixedly connected to the rear baffle 104. When the extension screw rod 204 rotates, the extension sliding sleeve 205 will reciprocate on the extension screw rod 204.

[0037] When the material is too long and the length of the unloading platform needs to be increased, start the extension motor 201. The extension motor 201 drives the driven gear 203 to rotate through the driving gear 202. The driven gear 203 drives the extension screw rod 204 to rotate. When the extension screw rod 204 rotates, it drives the extension sliding sleeve 205 to slide backward. The extension sliding sleeve 205 pushes the rear baffle 104 to slide backward. The rear baffle 104 sliding backward will drive the extension side plate 1031 and the extension support plate 102 to slide backward, so that the unloading platform extends backward. When the unloading platform reaches the required length, turn off the extension motor 201. At this time, the material can be placed on the unloading platform. When it needs to be retracted, start the extension motor 201. The extension motor 201 drives the driven gear 203 and the extension screw rod 204 to rotate in the reverse direction through the driving gear 202, so that the extension sliding sleeve 205 and the rear baffle 104 move forward and reset along the extension screw rod 204, and the extension side plate 1031 and the extension support plate 102 also move and reset, realizing the function of changing the length of the unloading platform.

[0038] Embodiment 3

[0039] Based on Embodiment 2, as Figures 3-7As shown, it further includes a connecting guide rod 3, a supporting bottom plate 301, an electric slider 302, a sliding plate 303, a flipping protection plate 304, an extended protection plate 3041, a rotating rod 3042, a sliding pull rod 3043, an extended sliding plate 305, a connecting spring 306 and a telescopic rod 307. Connecting guide rods 3 are fixed on both the fixed plate 2 and the rear baffle 104. The connecting guide rod 3 is U-shaped. A supporting bottom plate 301 is fixed inside the two connecting guide rods 3. The supporting bottom plate 301 is located below the supporting plate 101. An electric slider 302 is provided on the supporting bottom plate 301. A sliding plate 303 is fixed on the electric slider 302. The sliding plate 303 is rotatably connected to a flipping protection plate 304 through a telescopic rod 307. The sliding plate 303, the flipping protection plate 304 and the telescopic rod 307 are all arranged in the middle of the supporting plate 101 and the supporting bottom plate 301. An extended protection plate 3041 is slidably arranged inside the flipping protection plate 304. The extended protection plate 3041 can slide backward out of the flipping protection plate 304. Rotating rods 3042 are rotatably arranged on both the flipping protection plate 304 and the extended protection plate 3041. A sliding pull rod 3043 is fixed on the rotating rod 3042. The sliding pull rod 3043 is slidably connected to the connecting guide rod 3. The sliding pull rod 3043 is always located on the connecting guide rod 3. An extended sliding plate 305 is slidably arranged inside the sliding plate 303. A connecting spring 306 is arranged between the extended sliding plate 305 and the sliding plate 303. Two ends of the connecting spring 306 are respectively fixed on the sliding plate 303 and the extended sliding plate 305. The extended sliding plate 305 is rotatably connected to the extended protection plate 3041 through a telescopic rod 307. The extended sliding plate 305 can drive the extended protection plate 3041 to extend outward through the telescopic rod 307.

[0040] After the unloading platform is installed, start the two electric sliders 302 on the support base plate 301. The two electric sliders 302 slide towards both sides of the support base plate 301, driving the sliding plate 303 and the devices thereon to slide outwards at the same time. During the movement of the turning protection plate 304, it will drive the sliding pull rod 3043 to slide along the connecting guide rod 3. When the sliding pull rod 3043 moves to the arc bends at both ends of the connecting guide rod 3, the sliding pull rod 3043 will drive the rotating rod 3042 to rotate relative to the turning protection plate 304. As the turning protection plate 304 continues to slide outwards, the sliding pull rod 3043 will drive the turning protection plate 304 to swing upwards around the telescopic rod 307. When the electric slider 302 slides to the outermost side, the sliding pull rod 3043 just moves to the vertical position of the connecting guide rod 3. At this time, the turning protection plate 304 just turns to the vertical state to protect from both sides of the unloading platform. When the extension mechanism is started, the connecting spring 306 in the sliding plate 303 will push the extension sliding plate 305 to slide backwards. The extension sliding plate 305 drives the extension protection plate 3041 to slide backwards through the telescopic rod 307 to cooperate with the operation of the extension mechanism. After the unloading platform is used up, the electric slider 302 retracts inwards, and the sliding plate 303 and the devices thereon will move inwards and reset accordingly, realizing the function of protecting from both sides of the unloading platform.

[0041] As Figure 5 and Figure 6 shown, it further includes a sliding pedal 4, a fixed guide rod 403, a top spring 404 and a locking component. The sliding pedal 4 is slidably arranged in the support plate 101. The sliding pedal 4 can slide outwards to fill the gap between the unloading platform and the scaffolding. The fixed guide rod 403 is arranged in the fixed rod 1 and plays a guiding role. The sliding pedal 4 is slidably connected with the fixed guide rod 403. A top spring 404 is arranged between the sliding pedal 4 and the support plate 101. The top spring 404 is sleeved on the fixed guide rod 403, and both ends of the top spring 404 are respectively fixed on the sliding pedal 4 and the support plate 101. The locking component is installed on the support plate 101 and is used to limit the position of the sliding pedal 4.

[0042] When the sliding plate 303 pushes the flipping protection plate 304 to move outwards, the rotating rod 3042 on the flipping protection plate 304 will release the restriction of the locking component on the sliding pedal 4. At this time, the ejecting spring 404 will push the sliding pedal 4 forward along the fixed guide rod 403 from the support plate 101, so that the sliding pedal 4 fills the gap between the scaffold outside the building and the unloading platform, making the unloading platform and the scaffold outside the building seamlessly connected. After the unloading platform is used up, first push the sliding pedal 4 back to its original position along the fixed guide rod 403, and then manually control the reset of the locking component. When the electric slider 302 drives the flipping protection plate 304 to move back to its original position through the sliding plate 303, after the locking component is completely reset, the position of the sliding pedal 4 can be locked, realizing the function of filling the gap between the scaffold and the unloading platform.

[0043] As Figure 6 shown, the locking component includes a support column 3044, a fixed guide rod 4031, a sliding limit rod 4032, an unlocking spring 4033 and a sliding bent rod 4034. The fixed guide rod 4031 is fixed on the support plate 101. The sliding limit rod 4032 is slidably arranged on the fixed guide rod 4031. One end of the sliding limit rod 4032 passes through the fixed rod 1 and the fixed guide rod 403 and is slidably connected therewith. When the sliding limit rod 4032 is inserted into the fixed rod 1 and the fixed guide rod 403, it will play a role in restricting the sliding pedal 4. An unlocking spring 4033 is arranged between the sliding limit rod 4032 and the fixed rod 1. The unlocking spring 4033 is sleeved on the fixed guide rod 4031. The two ends of the unlocking spring 4033 are respectively fixed on the fixed rod 1 and the sliding limit rod 4032. The unlocking spring 4033 is used to push the sliding limit rod 4032 to slide out of the fixed guide rod 403. The sliding bent rod 4034 is slidably arranged on the support plate 101. When the sliding bent rod 4034 is at the highest position, it can block the sliding limit rod 4032 from the right end. When the sliding bent rod 4034 descends to the lowest position, the sliding limit rod 4032 will be pushed outwards by the unlocking spring 4033. The support column 3044 is fixed on the rotating rod 3042 at the front end of the flipping protection plate 304. The sliding bent rod 4034 and the support column 3044 cooperate to restrict the position of the sliding limit rod 4032.

[0044] When the flipping protection plate 304 moves outward, the support column 3044 on the rotating rod 3042 will move outward accordingly. When the support column 3044 disengages from the bottom of the sliding bent rod 4034, the sliding bent rod 4034 slides downward along the support plate 101 under the action of gravity. At this time, the sliding limit rod 4032 is no longer restricted by the sliding bent rod 4034, and the unlocking spring 4033 will elongate and push the sliding limit rod 4032 to slide outward along the fixed guide rod 4031. When the sliding limit rod 4032 slides out of the fixed guide rod 403 and the fixed rod 1, the sliding pedal 4 will be pushed forward by the ejecting spring 404. When it is necessary to retract the sliding pedal 4, first move the sliding pedal 4 to reset, and then manually push the sliding limit rod 4032 to slide along the fixed guide rod 4031, so that the sliding limit rod 4032 is inserted into the fixed rod 1 and the fixed guide rod 403. At this time, the unlocking spring 4033 is compressed. Then push the sliding bent rod 4034 upward so that the sliding bent rod 4034 blocks the sliding limit rod 4032. When the flipping protection plate 304 drives the rotating rod 3042 and the support column 3044 to move back to the original position, the support column 3044 supports the sliding bent rod 4034 from the bottom side, and the locking assembly can restrict the sliding pedal 4 to realize the function of locking or releasing the sliding pedal 4.

[0045] As Figures 8-10 shown, it further includes a rain shielding mechanism. The rain shielding mechanism is installed on the side baffle 103 and is used to prevent rainwater from falling into the unloading platform. When installing the unloading platform, in order to prevent rainwater from falling into the unloading platform and corroding the materials on rainy days, when the sliding pedal 4 slides forward, the rain shielding mechanism will swing upward simultaneously and cover the top of the unloading platform to block the rainwater from falling into the unloading platform. When it is necessary to lift the materials, the rain shielding mechanism can be manually retracted to realize the rain shielding function.

[0046] As Figures 8-10 shown, the rain shielding mechanism includes a connecting rod 401, a limit pin 402, a flipping shield 5, a fixed seat 501, a rotating shaft 502, a limit jack 5021 and a torsion spring 503. The fixed seat 501 is fixed on the side baffle 103, and the rotating shaft 502 is rotatably arranged on the fixed seat 501. The flipping shield 5 is fixed outside the rotating shaft 502. When the flipping shield 5 rotates upward with the rotating shaft 502, it can play a role in protection and rain shielding. A torsion spring 503 is arranged between the flipping shield 5 and the fixed seat 501. The torsion spring 503 is sleeved on the rotating shaft 502, and both ends of the torsion spring 503 are fixed on the flipping shield 5 and the fixed seat 501 respectively. A limit jack 5021 is opened at the front end of the rotating shaft 502. When a plug rod is inserted into the limit jack 5021, the rotating shaft 502 and the flipping shield 5 will be restricted from rotating. The connecting rod 401 is fixed on the sliding pedal 4, and the limit pin 402 is fixed on each connecting rod 401. The limit pin 402 is inserted into the limit jack 5021 to limit the position of the flipping shield 5.

[0047] When the sliding pedal 4 slides forward, the sliding pedal 4 drives the limit pin 402 to move outwards through the connecting rod 401, pulling the limit pin 402 outwards from the limit jack 5021. At this time, the rotating shaft 502 is no longer restricted, and the torsion spring 503 drives the flipping shutter 5 to swing upwards through the rotating shaft 502. When the flipping shutters 5 on both side baffles 103 swing upwards, they can cover the top of the unloading platform. When there is no need to cover on sunny days, the flipping shutter 5 can be manually pulled down to reset, and the rotating shaft 502 rotates accordingly to store energy in the torsion spring 503. At this time, an additional prepared insertion rod is inserted into the limit jack 5021 to restrict the torsion spring 503 from restoring, so as to restrict the rotating shaft 502 and the flipping shutter 5 from swinging upwards. After the flipping shutter 5 swings upwards, it can function to protect against rain and prevent high-altitude falling objects.

[0048] As Figure 10 shown, the rain protection mechanism further includes an extended shutter 5001, a fixed guide frame 504, and a connecting slider 505. The extended shutter 5001 is slidably arranged inside the flipping shutter 5. The fixed guide frame 504 is fixed on the extended side plate 1031. The connecting slider 505 is slidably arranged inside the fixed guide frame 504, and the connecting slider 505 is fixedly connected to the extended shutter 5001. The fixed guide frame 504 and the connecting slider 505 can pull the extended shutter 5001 outwards; when it is necessary to extend the unloading platform, the rear baffle 104 drives the two extended side plates 1031 to move backwards, the extended side plates 1031 drive the fixed guide frame 504 to move backwards, and the fixed guide frame 504 drives the extended shutter 5001 to slide out from the flipping shutter 5 through the connecting slider 505, realizing the function of adapting to the length of the unloading platform.

[0049] The above has described in detail the embodiments of the present invention in conjunction with the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the gist of the present invention.

Claims

1. A discharge platform for construction projects with overload alarm function, comprising a fixed rod, a support plate, an extended support plate, side baffles and a rear baffle. The fixed rod is installed with the support plate, the side baffles are symmetrically fixed on the support plate, the extended support plate is slidably arranged in the support plate, and the rear baffle is fixed on the extended support plate. Its characteristics are: It further includes a first fixing steel wire rope, a second fixing steel wire rope, a weighing sensor and an extension mechanism. The first fixing steel wire rope and the second fixing steel wire rope are symmetrically fixed on the support plate. The weighing sensor is installed on the support plate. The extension mechanism is installed at the bottom of the support plate and can make the unloading platform extend backward. The extension mechanism includes an extension side plate, a fixing plate, an extension motor, a driving gear, a driven gear, an extension screw rod and an extension sliding sleeve. The extension side plate is slidably arranged in the side baffle, and the extension side plate is fixedly connected with the rear baffle. The fixing plate is fixedly connected in the fixing rod. The extension motor is installed on the fixing plate. The driving gear is installed on the output shaft of the extension motor. The extension screw rod is rotatably arranged at the bottom of the support plate. The driven gear is fixed at the front end of the extension screw rod. The driven gear meshes with the driving gear. The extension sliding sleeve is threadedly connected to the extension screw rod. One end of the extension sliding sleeve passes through the support plate and is fixedly connected with the rear baffle. It further includes a connecting guide rod, a support bottom plate, an electric slider, a sliding plate, a turning protection plate, an extension protection plate, a rotating rod, a sliding pull rod, an extension sliding plate, a connecting spring and a telescopic rod. The connecting guide rods are fixed on both the fixing plate and the rear baffle. The support bottom plate is fixed on the inner sides of the two connecting guide rods. The electric slider is arranged on the support bottom plate. The sliding plate is fixed on the electric slider. The turning protection plate is rotatably connected to the sliding plate through the telescopic rod. The extension protection plate is slidably arranged in the turning protection plate. The rotating rods are rotatably arranged on both the turning protection plate and the extension protection plate. The sliding pull rod is fixed on the rotating rod and is slidably connected to the connecting guide rod. The extension sliding plate is slidably arranged in the sliding plate. The connecting spring is arranged between the extension sliding plate and the sliding plate. The extension sliding plate and the extension protection plate are rotatably connected through the telescopic rod.

2. The unloading platform for construction projects capable of alarming for overloading according to claim 1, wherein: It further includes a sliding pedal, a fixed guide rod, a top spring and a locking component. The sliding pedal is slidably arranged in the support plate. The fixed guide rod is arranged in the fixed rod. The sliding pedal is slidably connected to the fixed guide rod. The top spring is arranged between the sliding pedal and the support plate. The locking component is installed on the support plate and is used to limit the position of the sliding pedal.

3. The discharge platform for construction engineering with overload alarm according to claim 2, characterized in that: The locking component includes a support column, a fixed guide rod, a sliding limiting rod, an unlocking spring and a sliding bent rod. The fixed guide rod is fixed on the support plate. The sliding limiting rod is slidably arranged on the fixed guide rod. One end of the sliding limiting rod passes through the fixed rod and the fixed guide rod and is slidably connected thereto. The unlocking spring is arranged between the sliding limiting rod and the fixed rod. The sliding bent rod is slidably arranged on the support plate. The support column is fixed on the rotating rod at the front end of the turning protection plate. The sliding bent rod and the support column cooperate to limit the position of the sliding limiting rod.

4. The unloading platform for construction projects capable of alarming for overloading according to claim 2, wherein: It further includes a rain shielding mechanism which is installed on the side baffle and is used to prevent rainwater from falling into the unloading platform.

5. The discharging platform for construction engineering capable of alarming for overloading according to claim 4, wherein: The rain shielding mechanism includes a connecting rod, a limiting pin, a turning shielding plate, a fixed seat, a rotating shaft, a limiting jack and a torsion spring. The fixed seat is fixed on the side baffle. The rotating shaft is rotatably arranged on the fixed seat. The turning shielding plate is fixed outside the rotating shaft. The torsion spring is arranged between the turning shielding plate and the fixed seat. The limiting jack is opened at the front end of the rotating shaft. The connecting rod is fixed on the sliding pedal. The limiting pin is fixed on each connecting rod. The limiting pin is inserted into the limiting jack to limit the position of the turning shielding plate.

6. The discharge platform for construction engineering with overload alarm according to claim 5, characterized in that: The rain shielding mechanism further includes an extended shielding plate, a fixed guiding frame, and a connecting slider. The extended shielding plate is slidably disposed within the flipping shielding plate. The fixed guiding frame is fixed on the extended side plate. The connecting slider is slidably disposed within the fixed guiding frame and is fixedly connected to the extended shielding plate.

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