Convenient material transfer and unloading platform

Abstract

The application discloses a convenient material transferring and discharging platform, and belongs to the field of discharging platforms. The convenient material transferring and discharging platform comprises first I-shaped steel rails and second I-shaped steel rails which are arranged in parallel, a discharging box body is slidably installed on the first I-shaped steel rails and the second I-shaped steel rails, and a driving assembly for driving the discharging box body to move is installed on the first I-shaped steel rails and the second I-shaped steel rails; a limiting assembly is installed on the first I-shaped steel rails and the second I-shaped steel rails, the discharging box body moves, and the driving assembly cooperates with the limiting assembly to brake the discharging box body; a sub plate is movably installed on one side of a bottom plate of the discharging box body, and a triggering structure for triggering angle adjustment of the sub plate is installed between the first I-shaped steel rails, the second I-shaped steel rails and the sub plate; the material box body in the device can freely go back and forth between a construction site and a beam and a floor, and when in use, one end of the sub plate movably abuts against a floor surface under the action of the triggering structure to form a slope surface, so that the discharging difficulty is greatly reduced, and the building materials are prevented from being damaged.

Description

Technical Field

[0001] This application relates to the field of unloading platform design technology, specifically to a convenient material transfer and unloading platform. Background Technology

[0002] During the construction of the main structure of high-rise buildings, a material unloading platform is required for hoisting materials between floors. This platform is a common temporary construction platform used in high-rise building construction, typically erected on one side of the building. A tower crane lifts the necessary materials and tools from the ground to the unloading platform, which then transports them into the building. Currently, unloading platforms consist only of a flat structure with guardrails on both sides. The tower crane lifts materials or tools onto the flat structure. Most existing platforms are fixed, requiring manual entry into the material bins for material handling. This results in significant instability and low safety. Furthermore, because the platform is installed at a certain height above the floor slab, materials or trolleys may land hard on the floor slab during material handling, easily damaging the materials, increasing the difficulty of unloading, and affecting unloading efficiency. Summary of the Invention

[0003] The purpose of this application is to provide a convenient material transfer and unloading platform to solve the problems of difficulty in unloading materials, easy damage to building materials, and low unloading efficiency in the existing unloading platform.

[0004] To achieve the above objectives, this application employs the following technical solution: a convenient material transfer and unloading platform, comprising...

[0005] The first and second I-beams are arranged in parallel. A discharge box is slidably installed on the first and second I-beams, and a drive assembly for driving the discharge box to move is installed on the first and second I-beams.

[0006] And a limiting component installed on the first I-beam rail and the second I-beam rail, wherein the unloading box moves so that the driving component cooperates with the limiting component to brake the unloading box;

[0007] The auxiliary plate is movably installed on one side of the bottom plate of the unloading box, and a triggering structure for triggering the angle adjustment of the auxiliary plate is installed between the first I-beam rail, the second I-beam rail and the auxiliary plate.

[0008] In a further embodiment of this application, the bottom base of the unloading box is mounted on the first and second I-beam rails via rollers. The drive assembly includes a rack fixedly mounted on the base. A servo motor is fixed on the first I-beam rail via a motor mounting plate. A drive gear that meshes with the rack is fixed to one end of the output shaft of the servo motor that passes through the mounting plate. The base of the unloading box movably abuts against the limiting assembly.

[0009] Based on the above solution, the drive unit moves the unloading box freely back and forth between the floor and the cantilever beam, eliminating the need for manual driving of the unloading box, resulting in a high degree of automation and reducing labor costs.

[0010] In a further embodiment, the limiting component includes an L-shaped plate fixed to the base of the unloading box, a sleeve installed on the L-shaped plate, and a limiting rod movably installed inside the sleeve by a spring; it also includes a wedge block fixed to the bottom flange of the first I-beam and the second I-beam, the bottom of the limiting rod having an inclined surface that cooperates with the wedge block, and the limiting rod intermittently passing through a limiting hole in the upper flange of the first I-beam or the second I-beam.

[0011] When the unloading box moves to the end limit position of the first and second I-beams within the floor, the limit rod moves upward and gradually enters the limit hole to "flexibly" decelerate and limit the unloading box, preventing emergency braking from affecting the service life of the internal components of the device.

[0012] In a further embodiment of this application, the secondary plate hinge is installed on one side of the unloading box. The triggering structure includes a connecting plate hinged to the edge of the secondary plate. A T-shaped rod is provided between the connecting plate and the adjacent base. One end of the short rod of the T-shaped rod is rotatably connected to the connecting plate, and the other end is movable in the No. 1 arc-shaped groove on the side wall of the base. A support rod is also rotatably installed on the base, and the support rod is fixedly connected to the long rod of the T-shaped rod. The long rod of the T-shaped rod in the triggering structure can control the use state of the secondary plate. The structure is novel and easy to operate. Moreover, the No. 1 arc-shaped groove in this structure also has a self-limiting function after the secondary plate is lifted.

[0013] In a further embodiment, a manual clutch is installed on the side of the base near the sub-plate. The manual clutch includes a mounting plate fixedly installed on the side of the base near the sub-plate, and a motor support plate is rotatably mounted on the side of the mounting plate facing the base. A motor and a first gear are mounted on the motor support plate. A second gear is also rotatably mounted on the mounting plate. The output shaft of the motor is connected to the first gear through a reducer. The first gear and the second gear mesh intermittently. A trigger rod is provided on the side surface of the second gear. The two ends of the trigger rod are rotatably connected to the long rod of the T-shaped rod and the second gear.

[0014] A pull rod is rotatably mounted on the side of the motor support plate away from the first gear, and one end of the pull rod passes through a limiting hole on the side wall of the mounting plate. A limiting spring is sleeved on the pull rod, with one end of the limiting spring fixed to the pull rod and the other end fixed to the mounting plate.

[0015] To achieve automated operation, this structure can switch between manual and electric operation. In case of sudden power failure or damage to the motor, the control lever separates the first and second gears. At this time, the trigger mechanism can be manually operated to control the sub-plate. The device has strong overall adaptability.

[0016] The motor support plate has a second arc-shaped groove at its bottom, and at least two limiting screws are arranged in an arc shape on the mounting plate, with the limiting screws passing through the second arc-shaped groove. The second arc-shaped groove and the limiting screws work together to enable the motor support plate to move stably, making the manual clutch smoother and more stable when switching modes, and preventing the occurrence of gear grinding or jamming during the switching process.

[0017] In a further embodiment of this application, the bottom plate of the unloading box is a hollow structure. Two driving bodies are installed in parallel on the top plate of the bottom plate cavity, and a receiving frame is installed at one end of the bottom plate cavity. The sub-plate is movably placed within the receiving frame. It also includes two racks that are parallel and slidably arranged on the top plate of the cavity. One end of each rack is connected to a driving body, and the other end is fixedly connected to a limiting strip. A ball is installed on the limiting strip through a short shaft. A spherical groove is provided on the side of the sub-plate near the unloading box, and each ball is placed in the corresponding spherical groove.

[0018] Based on the above solution, the sub-plate is driven by a motor alone. The spherical groove and the sphere can meet the multi-angle adjustment of the sub-plate, which can adapt to a wider range of spacing between the bottom plate of the unloading box and the floor. Moreover, the tilt angle of the sub-plate can be adjusted adaptively during use.

[0019] Preferably, the drive body includes a mounting frame fixed to the top plate of the base cavity, and a No. 3 gear and a No. 4 gear that mesh with each other are rotatably mounted on the mounting frame. A semi-circular gear (98) is coaxially mounted on the No. 4 gear, and the semi-circular gear (98) meshes with the corresponding rack. A drive motor is also mounted on the base of the unloading box, and the output shaft of the drive motor passes through the adjacent base and is interference-fitted to the two No. 3 gears.

[0020] The design of the semi-circular gear can control the stage advance distance of the rack and the final sub-plate. The rack can only be driven when the teeth of the semi-circular gear mesh with the rack, and the toothless end rotates on its own.

[0021] In a further embodiment of this application, an arc-shaped chamfer is provided on the bottom edge of the receiving frame cavity. The chamfer reduces the wear on the plate surface when the sub-plate moves, thus extending its service life.

[0022] In a further embodiment of this application, two hinged doors are installed on the side panel of the unloading box away from the auxiliary plate, which can improve the safety of the unloading platform.

[0023] According to the above technical solution, this application has the following effects:

[0024] This application designs a movable material box body that can freely move back and forth between the construction site and the floor to find the cantilever beams, allowing workers to safely unload materials within the floor and increasing unloading efficiency. In addition, a secondary plate is movably installed on the bottom plate of the material box body. When in use, the secondary plate moves to abut against the floor surface under the action of the triggering structure to form a slope, so that the material or unloading trolley and the floor surface can achieve a soft landing, which greatly reduces the difficulty of unloading and prevents damage to building materials.

[0025] The trigger structure is cleverly designed. When in use, you only need to step on the T-shaped bar to drive the fan-shaped swing of the sub-plate using the lever principle, which can quickly switch between the use state and the movement state. At the same time, the lever principle has the effect of saving effort, reducing the difficulty of adjustment and enhancing the customer experience.

[0026] In addition, to achieve automation, the triggering structure is also connected to a manual clutch, allowing for manual and electric switching. When in use, simply pull the lever to separate gear one and gear two to achieve manual switching and realize automated operation. At the same time, it can also handle emergency situations in case of power failure, giving the device emergency handling capabilities. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of Example 1;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 3 This is a structural diagram of Example 1 after the manual clutch has been removed;

[0030] Figure 4 for Figure 3 Enlarged view at point B in the middle;

[0031] Figure 5 This is a structural diagram of Example 1 after the sub-plate has been removed;

[0032] Figure 6 for Figure 5 Enlarged view at point C;

[0033] Figure 7 This is a front view of Example 1;

[0034] Figure 8 This is a partial structural diagram from Example 2;

[0035] Figure 9 for Figure 8 Enlarged view at point D;

[0036] Figure 10 This is a structural diagram of the combined structure of the driver and the sub-board in Example 2.

[0037] in:

[0038] 1. First I-beam rail, 2. Second I-beam rail, 3. Unloading box, 4. Sub-plate

[0039] 31 Limiting rod, 32 Sleeve, 33 Wedge block

[0040] 51. Rack and pinion, 52. Servo motor, 53. Drive gear

[0041] 61 Connecting plate, 62 T-shaped rod, 64 Support rod, 65 No. 1 arc groove

[0042] 72 Motor support plate, 73 Gear No. 1, 74 Gear No. 2, 75 Pull rod, 76 Arc groove No. 2, 77 Limit screw, 78 Limit spring, 79 Trigger rod

[0043] 8 receiving frame

[0044] 91. Rack and pinion, 92. Limiting square bar, 93. Sphere, 94. Spherical groove, 95. Mounting frame, 96. Gear No. 3, 97. Gear No. 4, 98. Semicircular gear. Detailed Implementation

[0045] To make the technical means, creative features, objectives and effects of this application easier to understand, the following describes this application in conjunction with specific implementation methods.

[0046] It should be noted that in the description of this application, the terms "front," "rear," "left," "right," "upper," "lower," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and do not require this application to be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "front," "rear," "left," "right," "upper," and "lower" used in the description of this application refer to the directions in the accompanying drawings, and the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0047] Example 1

[0048] like Figure 1 Of Figure 7 As shown, this embodiment discloses a convenient material transfer and unloading platform, including a first I-beam rail 1 and a second I-beam rail 2 arranged in parallel. A unloading box 3 is slidably installed on the first I-beam rail 1 and the second I-beam rail 2, and a drive assembly for driving the unloading box 3 to move is installed on the first I-beam rail 1 and the second I-beam rail 2; and a limiting assembly installed on the first I-beam rail 1 and the second I-beam rail 2. When the unloading box 3 moves, the drive assembly cooperates with the limiting assembly to brake the unloading box 3; and a secondary plate 4, which is movably installed on one side of the bottom plate of the unloading box 3, and a triggering structure for triggering the angle adjustment of the secondary plate 4 is installed between the first I-beam rail 1, the second I-beam rail 2 and the secondary plate 4.

[0049] This unloading platform features a movable unloading box 3, ensuring that building materials can be unloaded within the floor while maintaining worker safety. Furthermore, the adjustable angle of the sub-plate 4 ensures a slope between the unloading box 3 and the floor level, achieving a soft landing effect for the building materials. This reduces unnecessary handling and damage, thereby lowering construction costs and increasing profits.

[0050] In this embodiment, refer to the appendix. Figure 5 and 7 The unloading box 3 is mounted on the first I-beam rail 1 and the second I-beam rail 2 via rollers. In this embodiment, the drive assembly provides a relatively preferred solution. The drive assembly includes a rack 51 fixedly mounted on the base. A servo motor 52 is fixed on the first I-beam rail 1 via a motor mounting plate. The output shaft of the servo motor 52 passes through the mounting plate and is fixed with a drive gear 53 that meshes with the rack 51. The base of the unloading box 3 movably abuts against the limiting assembly. The limiting assembly works in conjunction to limit and brake the unloading box 3.

[0051] Among them, observation appendix Figure 1 and 2 The aforementioned limiting component has a buffer function. The limiting component includes an L-shaped plate fixed on the base of the unloading box 3. A sleeve 32 is installed on the L-shaped plate, and a limiting rod 31 is movably installed inside the sleeve 2 by means of a spring.

[0052] It also includes wedge blocks 33 fixed to the bottom flanges of the first I-beam rail 1 and the second I-beam rail 2. A limiting rod 31 has an inclined surface at its bottom that mates with the wedge blocks 33. The limiting rod 31 intermittently passes through a limiting hole in the upper flange of the first I-beam rail 1 or the second I-beam rail 2. The wedge blocks 33 and the limiting rod 31 move relative to each other. When the limiting rod 31 moves upward, the spring deforms, thus achieving a buffering effect and providing good performance.

[0053] The above technical solution mentions a secondary plate 4 that is movably connected to the bottom plate of the unloading box 3. In this embodiment, the secondary plate 4 is hinged to one side of the unloading box 3. The triggering structure includes a connecting plate 61 hinged to the side of the secondary plate 4. A T-shaped rod 62 is provided between the connecting plate 61 and the adjacent base. One end of the short rod of the T-shaped rod 62 is rotatably connected to the connecting plate 61, and the other end is movably placed in the first arc groove 65 on the side wall of the base. A support rod 64 is also rotatably installed on the base. The support rod 64 is fixedly connected to the long rod of the T-shaped rod 62. If necessary, the support rod 64 can be fixedly installed on the base. A sleeve is fitted on the support rod 64, and the long rod end of the T-shaped rod 62 is fixedly connected to the sleeve. This facilitates the rotation of the T-shaped rod 62. In actual production, a foot pedal is installed at the end of the long rod of the T-shaped rod 62 to facilitate the worker to apply force. The tilt angle of the secondary plate 4 can be adjusted by manually stepping on it or manually turning it.

[0054] To achieve automatic adjustment, the device is also equipped with a manual clutch; observe the attached... Figure 6 The manual clutch includes a mounting plate (not shown in the figure) fixedly installed on the side of the base near the auxiliary plate 4. A motor support plate 72 is rotatably mounted on the side of the mounting plate facing the base. A motor and a first gear 73 are mounted on the motor support plate 72. A second gear 74 is also rotatably mounted on the mounting plate. The output shaft of the motor is connected to the first gear 73 through a reducer. The first gear 73 and the second gear 74 are intermittently meshed. A trigger rod 79 is provided on the side of the second gear 74. The two ends of the trigger rod 79 are rotatably connected to the long rod of the T-shaped rod 62 and the second gear 74. It should be noted that the mounting plane of the entire manual clutch device needs to be misaligned with the plane of the long rod of the T-shaped rod 62 to prevent interference with the rotation of the second gear 74. If necessary, a short rod can be installed between the contact surfaces of the trigger rod 79, the T-shaped rod 62, and the second gear 74.

[0055] A pull rod 75 is rotatably mounted on the side of the motor support plate 72 away from the first gear 73, and one end of the pull rod 75 passes through the limiting hole on the side wall of the mounting plate. A limiting spring 78 is sleeved on the pull rod 75, and one end of the limiting spring 78 is fixed to the pull rod 75, and the other end is fixed to the mounting plate.

[0056] During normal use, the motor drives gear 73 to rotate, which in turn drives gear 74 to rotate. The trigger rod drives the T-shaped rod 62 to lift or press down, ultimately automatically adjusting the angle of the secondary plate 4. This clutch also has another function: in the case of motor failure or power loss during manual clutch operation, the motor cannot be used. At this time, pulling the lever 75 separates gear 73 from gear 74. This state switches to manual mode, avoiding the drawback of the secondary plate 4 being unable to adjust its angle after a power outage or motor damage. The customer experience is excellent, and it has emergency capabilities. This clutch device is designed to be small in size, occupying little space, and will not interfere with workers' unloading operations.

[0057] To ensure a stable running trajectory for the motor support plate 72, a second arc-shaped groove 76 is provided at the bottom of the motor support plate 72. At least two limit screws 77 are arranged in an arc on the mounting plate. The limit screws 77 pass through the second arc-shaped groove 76. When the motor support plate 72 moves, it rotates along the second arc-shaped groove 76. In actual production, installing two limit screws 77 is sufficient to meet the usage requirements. Installing too many limit screws 77 increases manufacturing costs and may also affect the normal operation of the device.

[0058] Example 2

[0059] As attached Figures 8 to 10Compared to Embodiment 1, this embodiment is identical in structure except for the mounting structure of the sub-plate 4. In this embodiment, the bottom plate of the unloading box 3 is a hollow structure. Two driving bodies are installed in parallel on the top plate of the bottom plate cavity of the unloading box 3, and a receiving frame 8 is installed at one end of the bottom plate cavity. The sub-plate 4 is movably placed in the receiving frame 8. It also includes two racks 91 that are parallel and slidably arranged on the top plate of the cavity. One end of each rack 91 is connected to the driving body, and the other end is fixedly connected to a limiting square bar 92. The limiting square bar 92 is extended by a short shaft and a ball 93 is installed. The side of the sub-plate 4 near the unloading box 3 is provided with a spherical groove 94, and each ball 93 is placed in the corresponding spherical groove 94.

[0060] In this embodiment, instead of using a hinged structure to change the angle of the plate, a sphere 93 is used in a spherical groove 94. The sphere 93 can rotate freely in the spherical groove 94, which can meet the requirements for the arrangement of the sub-plate 4 angle. In practice, a notch of appropriate length may be opened on the bottom limiting strip 92 of the spherical groove 94 to meet the requirements for adjusting the sub-plate 4 angle.

[0061] Observation Appendix Figure 9 The driving body in this embodiment differs from that in Embodiment 1. Preferably, the driving body includes a mounting frame 95 fixed to the top plate of the base cavity, and a third gear 96 and a fourth gear 97 that mesh with each other are rotatably mounted on the mounting frame 95. A semi-circular gear 98 is coaxially mounted on the fourth gear 97. The semi-circular gear 98 meshes with the corresponding rack 91. A drive motor is also mounted on the base of the unloading box 3. The output shaft of the drive motor passes through the adjacent base and is interference-fitted to the two third gears 96. The number of teeth on the starting semi-circular gear 98 is half that of a conventional gear, and the specific tooth distribution range is arranged according to the actual situation.

[0062] In some embodiments, a rounded chamfer is provided on the bottom edge of the receiving frame 8 cavity. When the sub-plate 4 contacts the receiving frame 8, the smooth rounded chamfer reduces the wear of the sub-plate 4. Two hinged doors are installed on the side plate edge of the unloading box 3 away from the sub-plate 4. To improve the safety of the device, the two hinged doors are designed to open inwards.

[0063] Specific usage:

[0064] First, install the first I-beam rail 1, the second I-beam rail 2, and the unloading box 3 on the ground. Then, use lifting equipment to lift the assembled unloading platform to the floor where it is needed. After positioning, use anchor bolts and tie bolts to fix and install it.

[0065] Building materials are transported to the unloading box 3 using a tower crane. The servo motor 52 is started to move the unloading box 3 to the floor. Workers unload the materials inside the floor. The motor in the triggering structure is started to drive the first gear 73 and the second gear 74 to rotate. At this time, the second gear 74 drives the trigger rod 79 to apply force to the T-shaped rod 62 and move one end of the sub-plate 4 down until it comes into contact with the floor. At this time, a slope is formed between the unloading box 3 and the floor. This slope achieves soft contact between the building materials and the floor during unloading, which can improve the unloading speed and effectively protect the building materials and reduce unnecessary damage. If the motor fails, the pull rod 75 is manually pulled. The design and production are to install limit nails on the base. The pull ring on the pull rod 75 is sleeved on the limit nails. The first gear 73 and the second gear 74 are separated, switching to manual mode. The T-shaped rod 62 is manually operated to move the end of the sub-plate 4 up or down, enhancing the emergency handling capability of the device.

[0066] After the building materials on the unloading box 3 are transported, the unloading box 3 is moved to the cantilever beam. During the process, the limiting rod 31 moves upward under the action of the wedge block 33, and the spring is compressed until it enters the limiting hole. At this time, the unloading box 3 is braked. When the unloading box 3 moves backward, the limiting rod 31 moves downward under the elastic release of the spring. During the process, the unloading box 3 will not be affected in resetting.

[0067] The above-mentioned unloading box 3 achieves safe and efficient unloading during the process of going back and forth.

[0068] As is known from common technical knowledge, this application can be implemented through other embodiments that do not depart from its spirit or essential characteristics. Therefore, the disclosed embodiments described above are merely illustrative in all respects and are not the only ones. All modifications within the scope of this application or equivalent to this application are included in this application.

Claims

1. A convenient material transfer and unloading platform, characterized in that, include A first I-beam rail (1) and a second I-beam rail (2) are arranged in parallel. A discharge box (3) is slidably installed on the first I-beam rail (1) and the second I-beam rail (2). A drive assembly for driving the discharge box (3) to move is installed on the first I-beam rail (1) and the second I-beam rail (2). And a limiting component installed on the first I-beam rail (1) and the second I-beam rail (2), the unloading box (3) moves so that the driving component cooperates with the limiting component to brake the unloading box (3); Sub-plate (4), the sub-plate (4) is movably installed on one side of the bottom plate of the unloading box (3), and a triggering structure for triggering the angle adjustment of the sub-plate (4) is installed between the first I-beam rail (1), the second I-beam rail (2) and the sub-plate (4); The sub-plate (4) is hinged to one side of the unloading box (3). The triggering structure includes a connecting plate (61) hinged to the side of the sub-plate (4). A T-shaped rod (62) is provided between the connecting plate (61) and the adjacent base. One end of the short rod of the T-shaped rod (62) is rotatably connected to the connecting plate (61), and the other end is movable in the first arc groove (65) on the side wall of the base. A support rod (64) is also rotatably installed on the base. The support rod (64) is fixedly connected to the long rod of the T-shaped rod (62). A manual clutch is also installed on the side of the base near the sub-plate (4); the manual clutch includes a mounting plate fixedly installed on the side of the base near the sub-plate (4), and a motor support plate (72) is rotatably installed on the side of the mounting plate facing the base. A motor and a first gear (73) are installed on the motor support plate (72). A second gear (74) is also rotatably installed on the mounting plate. The output shaft of the motor is connected to the first gear (73) through a reducer. The first gear (73) and the second gear (74) mesh intermittently. A trigger rod (79) is provided on the side of the second gear (74). The two ends of the trigger rod (79) are rotatably connected to the long rod of the T-shaped rod (62) and the second gear (74). A pull rod (75) is rotatably mounted on the side of the motor support plate (72) away from the first gear (73), and one end of the pull rod (75) passes through the limiting hole on the side wall of the mounting plate. A limiting spring (78) is sleeved on the pull rod (75), and one end of the limiting spring (78) is fixed to the pull rod (75), and the other end is fixed to the mounting plate.

2. The convenient material transfer and unloading platform according to claim 1, characterized in that, The bottom base of the unloading box (3) is mounted on the first I-beam rail (1) and the second I-beam rail (2) by rollers. The drive assembly includes a rack (51) fixedly mounted on the base. A servo motor (52) is fixed on the first I-beam rail (1) by a motor mounting plate. The output shaft of the servo motor (52) passes through the mounting plate and is fixed with a drive gear (53) that meshes with the rack (51). The base of the unloading box (3) movably abuts against the limiting assembly.

3. The convenient material transfer and unloading platform according to claim 2, characterized in that, The limiting component includes an L-shaped plate fixed on the base of the unloading box (3), a sleeve (32) is installed on the L-shaped plate, and a limiting rod (31) is movably installed in the sleeve (32) by a spring; It also includes a wedge block (33) fixed on the bottom flange of the first I-beam (1) and the second I-beam (2). The bottom of the limiting rod (31) is provided with an inclined surface that cooperates with the wedge block (33). The limiting rod (31) intermittently passes through the limiting hole in the upper flange of the first I-beam (1) or the second I-beam (2).

4. The convenient material transfer and unloading platform according to claim 1, characterized in that, The bottom of the motor support plate (72) is provided with a second arc-shaped groove (76), and at least two limiting screws (77) are arranged in an arc on the mounting plate, with the limiting screws (77) passing through the second arc-shaped groove (76).

5. A convenient material transfer and unloading platform according to claim 1, characterized in that, The bottom plate of the unloading box (3) is a hollow structure. Two driving bodies are installed in parallel on the top plate of the bottom plate cavity of the unloading box (3), and a receiving frame (8) is installed at one end of the bottom plate cavity. The sub-plate is movable inside the receiving frame (8). It also includes two racks (91) that are parallel and slidably arranged on the top plate of the cavity. One end of each rack (91) is connected to the drive body, and the other end is fixedly connected to the limiting strip (92). The limiting strip (92) is extended by a short shaft and a ball (93) is installed thereon. The side of the sub-plate (4) near the unloading box (3) is provided with a spherical groove (94), and each ball (93) is placed in the corresponding spherical groove (94).

6. A convenient material transfer and unloading platform according to claim 5, characterized in that, The drive unit includes a mounting frame (95) fixed to the top plate of the base cavity, and a third gear (96) and a fourth gear (97) meshing with each other are rotatably mounted on the mounting frame (95). A semi-circular gear (98) is coaxially mounted on the fourth gear (97), and the semi-circular gear (98) meshes with the corresponding rack (91). A drive motor is also mounted on the base of the unloading box (3), and the output shaft of the drive motor passes through the adjacent base and is interference-fitted to the two third gears (96).

7. A convenient material transfer and unloading platform according to claim 6, characterized in that, The bottom edge of the receiving frame (8) has an arc-shaped chamfer.

8. A convenient material transfer and unloading platform according to any one of claims 1 to 7, characterized in that, Two hinged doors are installed on the side panel of the unloading box (3) away from the auxiliary plate (4).

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