Steel cantilever unloading platform
By designing the mobile platform and propulsion components of the steel cantilever unloading platform, the problem of low efficiency in manual transportation by construction workers in the existing technology has been solved, realizing automated and efficient transportation of building materials and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA RAILWAY 24TH BUREAU GROUP CO LTD
- Filing Date
- 2022-11-25
- Publication Date
- 2026-06-05
AI Technical Summary
Existing cantilevered unloading platforms require construction workers to transport building materials from the unloading platform to the top of the floor slab, resulting in low transportation efficiency.
Design a steel cantilever unloading platform that uses a mobile platform and a pushing component to transport materials to the top of the mobile container via a lifting device. The mobile and pushing components enable automated material transport, eliminating the need for construction personnel to enter the area above the platform.
It has enabled efficient and automated transportation of building materials, reduced safety hazards, and improved transportation efficiency.
Smart Images
Figure CN115680299B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of unloading platforms, and in particular to a steel cantilever unloading platform. Background Technology
[0002] Unloading platforms are various temporary work platforms and frames commonly erected on construction sites, generally used for material handling. Unloading platforms include mobile unloading platforms, ground-mounted unloading platforms, and cantilevered unloading platforms.
[0003] The cantilevered unloading platform includes a main cantilever beam fixed to the top surface of the floor slab, with the unloading platform fixed on the main cantilever beam. Guardrails are installed on both sides of the unloading platform and on the side furthest from the floor slab. Two steel wire ropes are installed on each side of the main cantilever beam, with the top ends of the steel wire ropes fixedly connected to the building. Construction workers use hoisting equipment to lift building materials onto the unloading platform, and then other construction workers transfer the building materials from the unloading platform to the top surface of the floor slab.
[0004] Regarding the aforementioned technologies, the inventors believe that hoisting building materials into the unloading platform requires additional construction workers to transport the materials to the top of the floor slab, resulting in low transportation efficiency. Summary of the Invention
[0005] To address the issue of low transportation efficiency caused by the need for additional construction personnel to transfer materials from the unloading platform, this application provides a steel cantilever unloading platform.
[0006] The steel cantilever unloading platform provided in this application adopts the following technical solution:
[0007] A steel cantilevered unloading platform includes a cantilevered main beam fixed to the top surface of a floor slab and a platform body fixed to the top surface of the cantilevered main beam. Side plates are fixed to both sides of the platform body and to the side away from the floor. Steel wire ropes are fixed to both sides of the cantilevered main beam, with the ends of the steel wire ropes away from the cantilevered main beam fixedly connected to the floor. A movable platform is installed on the top surface of the platform body. The movable platform includes a movable base plate and a movable box installed above the movable base plate. The movable box includes a movable plate. Movable vertical plates are fixed to both sides of the top surface of the movable plate and to the side away from the floor slab. An opening on the top surface of the movable base plate is provided for placing the movable plate. The platform has an installation groove in which an installation roller is rotatably mounted. A movable plate is fitted onto the outer circumference of the installation roller. Movable wheels are installed at the bottom corners of the movable base plate. A movable assembly is provided on the platform body to push the movable base plate to move along the length of the cantilevered main beam. A clearance groove is provided on the side of the movable plate. A clearance rod is slidably mounted on the movable plate along its own length through the clearance groove. A clearance block is installed at both ends of the clearance rod. An insertion groove for placing the clearance block is provided on the inner wall of the installation groove. A pushing assembly is provided on the cantilevered main beam to push the clearance block to move vertically.
[0008] By adopting the above technical solution, construction workers use hoists to transport building materials to the top of the mobile container. The mobile platform is then moved to the top of the floor slab using the moving components. The pushing components then push the clearance block upwards, and the clearance rod moves along the length of the mobile container within the clearance groove. The end of the mobile container moves upwards, and the mobile container is tilted, allowing the building materials on the top of the mobile container to move downwards for unloading. This eliminates the need for construction workers to enter the upper part of the platform, resulting in lower safety risks and higher transportation efficiency.
[0009] Preferably, the movable component includes a mounting plate fixed to the top surface of the floor slab and a reciprocating screw 1 rotatably mounted on the top surface of the mounting plate. A motor is fixed to the top surface of the mounting plate, and the output shaft of the motor is fixedly connected to the end of the reciprocating screw 1. The reciprocating screw 1 is arranged along the length direction of the cantilever main beam. A movable block is fixed to the side of the movable base plate. A receiving cavity is provided inside the movable block. A movable cylinder sleeved on the outer periphery of the reciprocating screw 1 is rotatably mounted in the receiving cavity. The reciprocating screw 1 and the movable cylinder are threadedly driven. A positioning groove is provided on the inner wall of the receiving cavity. The positioning block is slidably mounted on the movable block along its own length direction through the positioning groove. A movable groove for inserting the positioning block is provided on the outer periphery of the movable cylinder.
[0010] By adopting the above technical solution, the positioning block is inserted into the moving slot, the moving cylinder and the moving block are kept relatively fixed, the motor is started, the motor drives the reciprocating screw to rotate, the reciprocating screw drives the moving platform to move through the moving cylinder, so that the moving platform can transport building materials to the floor slab.
[0011] Preferably, the inner wall of the insertion slot is provided with a communicating groove that communicates with the positioning slot, the side of the positioning block is provided with a sliding groove, the inner wall of the communicating groove is fixed with a slider that passes through the sliding groove, the side of the slider away from the moving cylinder is fixed with a spring, the end of the spring away from the slider is fixedly connected to the inner wall of the sliding groove, and the end face of the positioning block away from the moving cylinder is provided with an inclined surface, which can abut against the clearance block.
[0012] By adopting the above technical solution, when the moving box is in a horizontal state, the relief block and the positioning block abut against each other. Under the action of the relief block, the positioning block is inserted into the moving groove, and the reciprocating screw can drive the moving platform to move. When the relief block moves upward, the relief block disengages from the insertion groove, and the positioning block disengages from the moving groove under the elastic force of the spring. The moving cylinder rotates with the reciprocating screw, and the moving platform stops moving.
[0013] Preferably, the pushing assembly includes a mounting block fixed to the top surface of the floor slab and a reciprocating screw 2 rotatably mounted on the mounting block. The outer periphery of the reciprocating screw 2 is fitted with a pushing block, and the side of the pushing block is provided with a slot. The reciprocating screw 2 is threadedly driven into the pushing block. The top surface of the clearance block is fixed with a fixing block, and the side of the fixing block is fixed with a plug that can be inserted into the slot.
[0014] By adopting the above technical solution, when the mobile platform moves to the position of the installation block, the insertion block is inserted into the slot. The reciprocating screw two is rotated, and the reciprocating screw two drives the push block to move upward. The push block drives the clearance block to move upward. The clearance block disengages from the insertion slot, the mobile base plate stops moving, and the end of the mobile box away from the installation roller tilts upward so that the building materials on the mobile box fall into the top surface of the floor slab under its own gravity.
[0015] Preferably, the mounting block has a cavity, in which a bevel gear is rotatably mounted. The bevel gear is fixedly mounted on the outer circumferential surface of the reciprocating screw. The outer circumference of the reciprocating screw is fitted with the bevel gear and a synchronizing sleeve. The bevel gear can mesh with the bevel gear, and the bevel gear is fixedly connected to the synchronizing sleeve. A synchronizing block is fixed on the outer circumferential surface of the reciprocating screw. A synchronizing groove is formed on the inner circumferential surface of the synchronizing sleeve. The synchronizing block slides along the length of the reciprocating screw and is connected to the synchronizing sleeve through the synchronizing groove.
[0016] By adopting the above technical solution, the synchronizing block is inserted into the synchronizing slot. The reciprocating screw one drives the bevel gear two to rotate synchronously through the synchronizing block and the synchronizing sleeve, and moves the synchronizing sleeve toward the direction closer to the bevel gear one, so that the bevel gear one and the bevel gear two mesh with each other, thereby driving the reciprocating screw two to rotate.
[0017] Preferably, a synchronization ring is fitted onto the outer circumferential surface of the synchronization sleeve, the synchronization ring being rotatably connected to the synchronization sleeve. A control groove is formed in the inner wall of the cavity. A control block is fixed to the outer circumferential surface of the synchronization ring. The control block is slidably connected to the mounting block along the length direction of the mounting block through the control groove. A reset block is fixed to the side of the control block. A reset groove is formed in the inner wall of the control groove. The reset block is slidably connected to the mounting block along the length direction of the mounting block through the reset groove. A spring is fixed to the side of the reset block near the first bevel gear. The end of the spring away from the reset block is fixedly connected to the inner wall of the reset groove. A magnet is fixed to the side of the control block away from the first bevel gear. An electromagnet is fixed to the inner wall of the control groove. The electromagnet can repel the magnet.
[0018] By adopting the above technical solution, when the electromagnet is de-energized, the control block moves away from the first bevel gear under the elastic force of the second spring, and the first bevel gear separates from the second bevel gear; when the electromagnet is energized, the magnetic block moves away from the electromagnet under the magnetic force of the electromagnet, causing the control block to move closer to the first bevel gear, and the first bevel gear meshes with the second bevel gear.
[0019] Preferably, the top surface of the slot has an abutment groove, the pushing block slides vertically along the abutment groove to install the abutment block, the side of the abutment block has a limiting groove, the inner wall of the abutment groove is fixed with a limiting block passing through the limiting groove, the side of the abutment block is fixed with a movable contact piece, the inner wall of the abutment groove is fixed with a fixed contact piece that can make electrical contact with the movable contact piece, the fixed contact piece is electrically connected to the power supply, and the movable contact piece is electrically connected to the electromagnet; the top surface of the mounting block has a connecting groove, the mounting block slides vertically along the connecting groove to install the connecting block, the bottom surface of the connecting block is fixed with a spring three, the bottom end of the spring three is fixedly connected to the bottom surface of the connecting groove, and the connecting block can be inserted into the abutment groove.
[0020] By adopting the above technical solution, when the bottom surface of the pushing block abuts against the top surface of the mounting block, the connecting block moves upward under the elastic force of the spring three and is inserted into the abutment groove. The connecting block pushes the abutment block upward, the moving contact piece and the fixed contact piece are in a separated state, the electromagnet is de-energized, the bevel gear one and the bevel gear two are separated from each other, and the reciprocating screw two does not rotate.
[0021] Preferably, the top surface of the abutment block is provided with a second inclined surface, the insert block can abut against the second inclined surface, the width of the insert block is smaller than the width of the slot, and the top surface of the insert block can fit against the inner top surface of the slot.
[0022] By adopting the above technical solution, when the mobile box is carrying building materials, the insert block is inserted into the slot. The insert block pushes the abutment block downward through the inclined plane two, so that the moving contact piece and the fixed contact piece make electrical contact. The electromagnet is energized and works, the reciprocating screw two rotates, the push block drives the relief block to move upward. After unloading, the reciprocating screw two drives the push block to move downward. When the bottom surface of the push block is in contact with the top surface of the mounting block, the connecting block is inserted into the abutment groove under the elastic force of the spring three, and pushes the abutment block to move upward. At this time, the top surface of the insert block is in contact with the inner top surface of the slot, the moving contact piece and the fixed contact piece separate, and the relief block pushes the positioning block to move towards the direction close to the moving cylinder and is inserted into the moving groove. The reciprocating screw one drives the moving platform to reset.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] 1. Construction workers use hoisting equipment to transport building materials to the top of the mobile container. The mobile platform is then moved to the top of the floor slab using a moving component. The pushing component then pushes the clearance block upwards, and the clearance rod moves along the length of the mobile container within the clearance groove. The end of the mobile container moves upwards, and the mobile container is tilted so that the building materials on the top of the mobile container move downwards for unloading. This eliminates the need for construction workers to enter the upper part of the platform, resulting in lower safety risks and higher transportation efficiency.
[0025] 2. When the moving box is in a horizontal state, the relief block and the positioning block abut against each other. Under the action of the relief block, the positioning block is inserted into the moving groove, and the reciprocating screw can drive the moving platform to move. When the relief block moves upward, the relief block disengages from the insertion groove, and the positioning block disengages from the moving groove under the elastic force of the spring. The moving cylinder rotates with the reciprocating screw, and the moving platform stops moving.
[0026] 3. When the mobile box is carrying building materials, the insert block is inserted into the slot. The insert block pushes the abutment block downward through the inclined plane two, so that the moving contact piece and the fixed contact piece make electrical contact. The electromagnet is energized and the reciprocating screw two rotates. The push block drives the relief block to move upward. After unloading, the reciprocating screw two drives the push block to move downward. When the bottom surface of the push block is in contact with the top surface of the mounting block, the connecting block is inserted into the abutment groove under the elastic force of the spring three and pushes the abutment block to move upward. At this time, the top surface of the insert block is in contact with the inner top surface of the slot, the moving contact piece and the fixed contact piece separate, and the relief block pushes the positioning block to move towards the direction close to the moving cylinder and is inserted into the moving groove. The reciprocating screw one drives the moving platform to reset. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the overall structure of the steel cantilever unloading platform according to an embodiment of this application.
[0028] Figure 2 This is a schematic diagram of the structure of the mobile platform in the steel cantilever unloading platform of this application embodiment.
[0029] Figure 3 This is a schematic diagram of the moving plate and moving block in the steel cantilever unloading platform of this application embodiment.
[0030] Figure 4 This is a cross-sectional view of the moving block in the steel cantilever unloading platform according to an embodiment of this application.
[0031] Figure 5 This is a cross-sectional view of the mounting block and the pushing block in the steel cantilever unloading platform of this application embodiment.
[0032] Figure 6 This is a cross-sectional view of the synchronous sleeve and synchronous ring in the steel cantilever unloading platform of this application embodiment.
[0033] Reference numerals: 1. Cantilever main beam; 11. Platform body; 12. U-shaped steel bar; 13. Wooden wedge; 14. Baffle; 15. Side plate; 16. Steel wire rope; 17. Mounting plate; 2. Moving platform; 21. Moving base plate; 22. Moving box; 23. Moving wheel; 24. Moving plate; 25. Moving vertical plate; 26. Mounting groove; 27. Mounting roller; 28. Clearance groove; 29. Clearance rod; 3. Moving block; 31. Receiving cavity; 32. Moving cylinder; 33. Positioning block; 34. Positioning groove; 35. Moving groove; 36. Reciprocating screw one; 37. Guide rod one; 38. Motor; 4. Clearance block; 41. Insertion groove; 42. Connecting groove; 43. Inclined surface one; 44. Slide 45. Slider; 46. Spring 1; 5. Mounting block; 51. Guide rod 2; 52. Reciprocating screw 2; 53. Push block; 54. Slot; 55. Fixing block; 56. Insert block; 57. Cavity; 58. Bevel gear 1; 6. Bevel gear 2; 61. Synchronizing sleeve; 62. Synchronizing block; 63. Synchronizing slot; 64. Synchronizing ring; 65. Control slot; 7. Control block; 71. Reset block; 72. Reset slot; 73. Spring 2; 74. Magnetic block; 75. Electromagnet; 8. Abutting block; 81. Abutting slot; 82. Inclined surface 2; 83. Limiting slot; 84. Limiting block; 85. Moving contact piece; 86. Fixed contact piece; 87. Connecting block; 88. Connecting slot; 89. Spring 3. Detailed Implementation
[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.
[0035] This application discloses a steel cantilevered unloading platform. (See also...) Figure 1 The steel cantilever unloading platform includes a cantilever main beam 1 and a platform body 11 fixed to the cantilever main beam 1. U-shaped steel bars 12 are used to fix the end of the cantilever main beam 1 to the top surface of the floor slab. Wooden wedges 13 are inserted into the gap between the U-shaped steel bars 12 and the cantilever main beam 1, and the wooden wedges 13 are in close contact with the cantilever main beam 1. A baffle 14 is fixed to the bottom surface of the cantilever main beam 1, and the baffle 14 abuts against the side of the floor slab. Side plates 15 are fixed to both sides of the platform body 11 and the side away from the floor slab. Two inclined steel wire ropes 16 are fixed to both sides of the cantilever main beam 1, and the end of the steel wire rope 16 away from the cantilever main beam 1 is fixedly connected to the floor structure. An installation plate 17 is fixed to the top surface of the floor slab, and the top surface of the installation plate 17 is coplanar with the top surface of the platform body 11.
[0036] Reference Figure 2 and Figure 3 A mobile platform 2 is mounted on the top surface of the platform body 11. The mobile platform 2 includes a mobile base plate 21 and a mobile box 22 mounted on the mobile base plate 21. Mobile wheels 23 are installed at the bottom corners of the mobile base plate 21. The mobile box 22 includes a mobile plate 24, with mobile vertical plates 25 fixed to both sides of the top surface and the side away from the floor slab. An installation groove 26 for placing the mobile plate 24 is provided on the top surface of the mobile base plate 21. An installation roller 27 is rotatably mounted in the installation groove 26, and the mobile plate 24 is fitted onto the outer circumference of the installation roller 27. A clearance groove 28 is provided on the side of the mobile box 22, through which a clearance rod 29 is slidably mounted along its length. Clearance blocks 4 are rotatably mounted at both ends of the clearance rod 29, and an insertion groove 41 for placing the clearance blocks 4 is provided on the inner wall of the installation groove 26.
[0037] Reference Figure 2 and Figure 3 A horizontally arranged reciprocating screw 36 and guide rod 37 are rotatably mounted on the top surface of the mounting plate 17. A motor 38 is fixed on the top surface of the mounting plate 17, and the output shaft of the motor 38 is fixedly connected to the end of the reciprocating screw 36. Movable blocks 3 are fixed on both sides of the movable base plate 21. One movable block 3 is sleeved on the outer circumferential surface of the reciprocating screw 36, and the other movable block 3 is sleeved on the outer circumferential surface of the guide rod 37.
[0038] Reference Figure 3 and Figure 4One of the movable blocks 3 has a receiving cavity 31, within which a movable cylinder 32 is rotatably mounted. A reciprocating screw 36 passes through the movable cylinder 32, and the reciprocating screw 36 and the movable cylinder 32 are threadedly engaged. A positioning groove 34 is formed on the inner circumferential surface of the receiving cavity 31, and a positioning block 33 is mounted on the movable block 3 by sliding along its length through the positioning groove 34. A movable groove 35 for inserting the positioning block 33 is formed on the outer circumferential surface of the movable cylinder 32. A connecting groove 42 is formed on the inner wall of the insertion groove 41, which communicates with the positioning groove 34, and the positioning block 33 can be inserted into the connecting groove 42. An inclined surface 43 is formed on the end face of the positioning block 33 away from the movable cylinder 32, and the inclined surface 43 can abut against the relief block 4. A sliding groove 44 is formed on the side of the positioning block 33, and a slider 45 passing through the sliding groove 44 is fixed on the inner wall of the connecting groove 42. A spring 46 is fixed to the side of the slider 45 away from the movable cylinder 32, and the end of the spring 46 away from the slider 45 is fixedly connected to the inner wall of the groove 44.
[0039] Reference Figure 2 Two mounting blocks 5 are fixed to the top surface of the mounting plate 17. One mounting block 5 is equipped with a vertically arranged guide rod 51, and the other mounting block 5 is rotatably equipped with a vertically arranged reciprocating screw 52. Push blocks 53 are fitted around the outer periphery of both the guide rod 51 and the reciprocating screw 52, and the reciprocating screw 52 is threadedly engaged with the push blocks 53. A slot 54 is provided on the side of the push block 53. A fixing block 55 is fixed to the top surface of the clearance block 4, and an insert block 56 is fixed to the side of the fixing block 55, which can be inserted into the slot 54. The width of the insert block 56 is smaller than the width of the slot 54.
[0040] Reference Figure 5 and Figure 6 One of the mounting blocks 5 has a cavity 57, within which a bevel gear 58 is rotatably mounted. The bevel gear 58 is sleeved and fixed to the outer circumference of the reciprocating screw 32. A bevel gear 6 is sleeved on the outer circumference of the reciprocating screw 36, and the bevel gear 6 can mesh with the bevel gear 58. A synchronizing sleeve 61 is fixed to the side of the bevel gear 6, and the synchronizing sleeve 61 is sleeved on the outer circumference of the reciprocating screw 36. Two synchronizing blocks 62 are fixed to the outer circumference of the reciprocating screw 36. A synchronizing groove 63 is formed on the inner circumference of the synchronizing sleeve 61, and the synchronizing blocks 62 are slidably connected to the synchronizing sleeve 61 along the length direction of the reciprocating screw 36 through the synchronizing groove 63.
[0041] Reference Figure 5A synchronizing ring 64 is fitted onto the outer circumferential surface of the synchronizing sleeve 61, and the synchronizing ring 64 is rotatably connected to the synchronizing sleeve 61. A control groove 65 is formed on the inner top surface of the cavity 57, and a control block 7 is fixed to the outer circumferential surface of the synchronizing ring 64. The control block 7 is slidably connected to the mounting block 5 along the length direction of the mounting block 5 through the control groove 65. Reset blocks 71 are fixed on both sides of the control block 7, and reset grooves 72 are formed on the opposite inner sides of the control groove 65. The reset blocks 71 are slidably connected to the mounting block 5 along the length direction of the mounting block 5 through the reset grooves 72. A spring 73 is fixed to the side of the reset block 71 near the first bevel gear 58, and the end of the spring 73 away from the reset block 71 is fixedly connected to the inner wall of the reset groove 72. A magnet 74 is fixed to the side of the control block 7 away from the first bevel gear 58, and an electromagnet 75 is fixed to the inner wall of the control groove 65 away from the first bevel gear 58. The electromagnet 75 can repel the magnet 74.
[0042] Reference Figure 2 and Figure 5 One of the push blocks 53 has a groove 81 on the top surface of its slot 54, through which the push block 53 slides vertically to mount a stop block 8. The top surface of the stop block 8 has a second inclined surface 82, which the insert block 56 abuts against. A limiting groove 83 is provided on the side of the stop block 8, and a limiting block 84 passing through the limiting groove 83 is fixed to the inner wall of the groove 81. A movable contact 85 is fixed to the side of the stop block 8, and a fixed contact 86 that can make electrical contact with the movable contact 85 is fixed to the inner wall of the groove 81. The fixed contact 86 is electrically connected to a power source, and the movable contact 85 is electrically connected to an electromagnet 75. The top surface of the mounting block 5 has a connecting groove 88, through which the mounting block 5 slides vertically to mount a connecting block 87, which can be inserted into the groove 81. A spring 89 is fixed to the bottom surface of the connecting block 87, and the bottom end of the spring 89 is fixedly connected to the bottom surface of the connecting groove 88.
[0043] The implementation principle of the steel cantilever unloading platform in this application embodiment is as follows: Construction workers use a hoist to transport building materials into the mobile box 22, start the motor 38, the motor 38 drives the reciprocating screw 36 to rotate, the reciprocating screw 36 drives the mobile platform 2 to move towards the floor slab; the mobile platform 2 moves to the position of the mounting block 5, the insert block 56 is inserted into the slot 54, the insert block 56 pushes the abutment block 8 downward through the inclined plane 82, the moving contact piece 85 and the fixed contact piece 86 make electrical contact, the electromagnet 75 is energized and works, the bevel gear 58 and the bevel gear 6 mesh with each other, the reciprocating screw 52 rotates, the push block 53 drives the relief block 4 to move upward, the relief block 4 tilts the end of the mobile box 22 away from the mounting roller 27 upward through the relief rod 29, so that the building materials in the mobile box 22 fall onto the top surface of the floor slab under its own gravity;
[0044] After the building materials are unloaded, the reciprocating screw 2 52 drives the push block 53 to move downward. When the bottom surface of the push block 53 is in contact with the top surface of the mounting block 5, the connecting block 87 is inserted into the abutment groove 81. Under the elastic force of the spring 3 89, the connecting block 87 pushes the abutment block 8 to move upward. Since the building materials in the moving box 22 have been transferred to the top surface of the floor slab, the pressure applied by the insert block 56 to the abutment block 8 is less than the elastic force applied by the spring 3 89 to the abutment block 8. The top surface of the insert block 56 is in contact with the inner top surface of the slot 54, the moving contact piece 85 separates from the fixed contact piece 86, and the reciprocating screw 2 52 stops rotating. When the bottom surface of the push block 53 is in contact with the top surface of the mounting block 5, the yielding block 4 pushes the positioning block 33 to move towards the moving cylinder 32 through the inclined surface 1 43. The positioning block 33 is inserted into the moving groove 35, and the reciprocating screw 1 36 drives the moving platform 2 to reset. The insert block 56 disengages from the slot 54.
[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A steel cantilever unloading platform, comprising a cantilever main beam (1) fixed to the top surface of a floor slab and a platform body (11) fixed to the top surface of the cantilever main beam (1), wherein side plates (15) are fixed to both sides of the platform body (11) and the side away from the floor, and steel wire ropes (16) are fixed to both sides of the cantilever main beam (1), wherein one end of the steel wire rope (16) away from the cantilever main beam (1) is fixedly connected to the floor, characterized in that: A mobile platform (2) is installed on the top surface of the platform body (11). The mobile platform (2) includes a mobile base plate (21) and a mobile box (22) installed above the mobile base plate (21). The mobile box (22) includes a mobile plate (24). Mobile vertical plates (25) are fixed on both sides of the top surface of the mobile plate (24) and on the side away from the floor. An installation groove (26) for placing the mobile plate (24) is opened on the top surface of the mobile base plate (21). An installation roller (27) is rotatably installed in the installation groove (26). The mobile plate (24) is sleeved on the outer periphery of the installation roller (27). The bottom edge of the mobile base plate (21) Each corner is equipped with a movable wheel (23), and the platform body (11) is provided with a movable component for pushing the movable base plate (21) to move along the length direction of the cantilever main beam (1); the side of the movable plate (24) is provided with a clearance groove (28), and the movable plate (24) is slidably mounted with a clearance rod (29) along its own length direction through the clearance groove (28). Both ends of the clearance rod (29) are equipped with clearance blocks (4), and the inner wall of the mounting groove (26) is provided with an insertion groove (41) for placing the clearance block (4). The cantilever main beam (1) is provided with a pushing component for pushing the clearance block (4) to move vertically.
2. The cantilevered steel unloading platform according to claim 1, characterized in that: The movable component includes a mounting plate (17) fixed to the top surface of the floor slab and a reciprocating screw (36) rotatably mounted on the top surface of the mounting plate (17). A motor (38) is fixed to the top surface of the mounting plate (17), and the output shaft of the motor (38) is fixedly connected to the end of the reciprocating screw (36). The reciprocating screw (36) is arranged along the length direction of the cantilever main beam (1). A movable block (3) is fixed to the side of the movable base plate (21), and a receiving cavity (3) is provided inside the movable block (3). 1) A movable cylinder (32) sleeved on the outer periphery of the reciprocating screw (36) is rotatably installed in the receiving cavity (31). The reciprocating screw (36) and the movable cylinder (32) are threadedly driven together. A positioning groove (34) is provided on the inner wall of the receiving cavity (31). A positioning block (33) is slidably installed on the movable block (3) along its own length direction through the positioning groove (34). A movable groove (35) for inserting the positioning block (33) is provided on the outer periphery of the movable cylinder (32).
3. The cantilevered steel unloading platform according to claim 2, characterized in that: The inner wall of the insertion slot (41) is provided with a connecting slot (42) that communicates with the positioning slot (34). The side of the positioning block (33) is provided with a sliding groove (44). The inner wall of the connecting slot (42) is fixed with a slider (45) that passes through the sliding groove (44). A spring (46) is fixed on the side of the slider (45) away from the moving cylinder (32). The end of the spring (46) away from the slider (45) is fixedly connected to the inner wall of the sliding groove (44). The end face of the positioning block (33) away from the moving cylinder (32) is provided with a slope (43). The slope (43) can abut against the relief block (4).
4. The cantilevered steel unloading platform according to claim 2, characterized in that: The pushing assembly includes a mounting block (5) fixed to the top surface of the floor slab and a reciprocating screw two (52) rotatably mounted on the mounting block (5). A pushing block (53) is sleeved on the outer periphery of the reciprocating screw two (52). A slot (54) is provided on the side of the pushing block (53). The reciprocating screw two (52) and the pushing block (53) are threadedly driven together. A fixing block (55) is fixed on the top surface of the clearance block (4). A plug (56) that can be inserted into the slot (54) is fixed on the side of the fixing block (55).
5. The cantilevered steel unloading platform according to claim 4, characterized in that: The mounting block (5) has a cavity (57) inside, and a bevel gear (58) is rotatably installed in the cavity (57). The bevel gear (58) is sleeved and fixed on the outer circumferential surface of the reciprocating screw (52). The outer circumference of the reciprocating screw (36) is sleeved with a bevel gear (6) and a synchronizing sleeve (61). The bevel gear (6) can mesh with the bevel gear (58). The bevel gear (6) is fixedly connected to the synchronizing sleeve (61). A synchronizing block (62) is fixed on the outer circumferential surface of the reciprocating screw (36). A synchronizing groove (63) is opened on the inner circumferential surface of the synchronizing sleeve (61). The synchronizing block (62) slides and connects to the synchronizing sleeve (61) along the length direction of the reciprocating screw (36) through the synchronizing groove (63).
6. The cantilevered steel unloading platform according to claim 5, characterized in that: A synchronization ring (64) is fitted on the outer circumferential surface of the synchronization sleeve (61). The synchronization ring (64) is rotatably connected to the synchronization sleeve (61). A control groove (65) is formed on the inner wall of the cavity (57). A control block (7) is fixed on the outer circumferential surface of the synchronization ring (64). The control block (7) is slidably connected to the mounting block (5) along the length direction of the mounting block (5) through the control groove (65). A reset block (71) is fixed on the side of the control block (7). A reset groove (72) is formed on the inner wall of the control groove (65). The reset block (71) is... The reset block (71) is slidably connected to the mounting block (5) along the length direction of the mounting block (5) via the reset groove (72). A spring (73) is fixed to the side of the reset block (71) near the bevel gear (58). The end of the spring (73) away from the reset block (71) is fixedly connected to the inner wall of the reset groove (72). A magnet (74) is fixed to the side of the control block (7) away from the bevel gear (58). An electromagnet (75) is fixed to the inner wall of the control groove (65). The electromagnet (75) can repel the magnet (74).
7. The cantilevered steel unloading platform according to claim 6, characterized in that: The top surface of the slot (54) is provided with an abutment groove (81). The push block (53) slides vertically along the abutment groove (81) to install the abutment block (8). The side of the abutment block (8) is provided with a limiting groove (83). The inner wall of the abutment groove (81) is fixed with a limiting block (84) that passes through the limiting groove (83). The side of the abutment block (8) is fixed with a moving contact piece (85). The inner wall of the abutment groove (81) is fixed with a fixed contact piece (86) that can make electrical contact with the moving contact piece (85). The fixed contact (86) is electrically connected to the power supply, and the movable contact (85) is electrically connected to the electromagnet (75). The top surface of the mounting block (5) is provided with a connecting groove (88). The mounting block (5) slides vertically along the connecting groove (88) to install a connecting block (87). The bottom surface of the connecting block (87) is fixed with a spring (89). The bottom end of the spring (89) is fixedly connected to the bottom surface of the connecting groove (88). The connecting block (87) can be inserted into the abutment groove (81).
8. The cantilevered steel unloading platform according to claim 7, characterized in that: The top surface of the abutting block (8) is provided with a second inclined surface (82), and the insert block (56) can abut against the second inclined surface (82). The width of the insert block (56) is smaller than the width of the slot (54), and the top surface of the insert block (56) can fit against the inner top surface of the slot (54).