An attached lifting protection platform

Abstract

The present invention relates to the field of building construction, and specifically to an attached lifting protection platform, including an anti-falling device, a platform structure and a lifting mechanism; the anti-falling device is used to be fixedly connected to the wall of a building, the lifting mechanism is fixedly connected to the platform structure, and the lifting mechanism is used to drive the platform structure to move up and down on the anti-falling device; the platform structure includes guide rails, scaffolding boards, outer poles, inner poles, connecting braces and diagonal rods. The beneficial effect of the present invention is that the platform structure formed by combining aluminum alloy components and steel components can reduce the overall weight of the protection platform by at least 50% compared to the all-steel protection platform, and at the same time, the inner and outer poles form the longitudinal support structure body, and the connecting brace forms the horizontal support structure body, thereby ensuring that the overall connection strength will not be reduced due to the use of aluminum alloy components.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to an attached lifting protection platform. Background Art

[0002] The attached lifting work protection platform (i.e. climbing frame) used in construction refers to a frame erected at a certain height and attached to the building structure. Relying on its own lifting equipment and devices, it can gradually climb or descend with the building structure. It is a construction work platform with safety protection, anti-tilt, anti-fall and synchronous lifting.

[0003] With the development of science and technology and the progress of society, people have higher and higher requirements for the safety and convenience of construction projects. With the rapid development of the industry, safe and easy-to-use construction tools have received more and more attention. In the current existing technology, the existing construction work platform, i.e., the climbing frame, is all steel-type, and the frame is heavy, which will lead to large motor loss and high power consumption. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide an attached lifting and protection platform which can achieve maximum weight reduction while ensuring that the platform structure has a sufficiently high connection strength.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: an attached lifting protection platform, including an anti-falling device, a platform structure and a lifting mechanism;

[0006] The anti-falling device is used to be fixedly connected to the wall of the building, the lifting mechanism is fixedly connected to the platform structure, and the lifting mechanism is used to drive the platform structure to move up and down on the anti-falling device;

[0007] The platform structure includes guide rails, scaffolding boards, outer poles, inner poles, connecting braces and diagonal rods;

[0008] The guide rails, scaffolding boards, outer poles and inner poles are all made of aluminum alloy, and the connecting braces and diagonal rods are all made of steel;

[0009] The guide rail is fixedly connected to the inner pole, the guide rail contacts the anti-fall device and moves up and down on the anti-fall device, the outer pole and the inner pole are fixedly connected by a connecting support, the scaffolding board is fixedly connected between the outer pole and the inner pole and is located above the connecting support, the top of the outer pole is higher than the top of the inner pole, one end of the inclined rod is fixedly connected to the top of the outer pole, and the other end is fixedly connected to the top of the inner pole.

[0010] The beneficial effects of the present invention are as follows: the platform structure formed by combining aluminum alloy components and steel components can reduce the overall weight of the protection platform by at least 50% compared to an all-steel protection platform, while the inner and outer vertical poles form a longitudinal support structure body, and the connecting struts form a horizontal support structure body, thereby ensuring that the overall connection strength will not be reduced due to the use of aluminum alloy components; the reduced weight of the protection platform can make the assembly process more convenient, and reduce the power consumption of the motor during lifting and lowering, and can also avoid the excessive impact force when the protection platform falls, causing the anti-fall device to fail; the aluminum alloy components are corrosion-resistant, which can extend the service life of the protection platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural schematic diagram of an attached lifting protection platform according to a specific embodiment of the present invention;

[0012] Figure 2 This is a front view of an attached lifting protection platform according to a specific embodiment of the present invention;

[0013] Figure 3 This is a schematic diagram of the guide rail structure of a specific embodiment of the present invention;

[0014] Figure 4 This is a schematic diagram of the structure of the anti-falling device in a static state according to a specific embodiment of the present invention;

[0015] Figure 5 This is a schematic structural diagram of the anti-falling device in the ascending state according to a specific embodiment of the present invention;

[0016] Figure 6 This is a schematic diagram of the structure of the anti-falling device in the descending state according to a specific embodiment of the present invention;

[0017] Figure 7 This is a structural schematic diagram of a falling blocking state of a falling prevention device according to a specific embodiment of the present invention;

[0018] Description of labels:

[0019] 1. Anti-fall device; 11. Block; 111. Plane; 112. Trigger pendulum block; 113. Anti-fall pendulum block; 114. Limiting surface; 115. Support; 12. Lower baffle; 13. Anti-fall baffle; 2. Platform structure; 21. Guide rail; 211. Anti-fall hole; 212. Steel wire; 22. Scaffolding board; 23. External pole; 24. Internal pole; 25. Connecting support; 26. Diagonal rod; 27. Diagonal support rod; 3. Lifting mechanism; 31. Upper hanging point; 32. Lower hanging point; 33. Electric hoist. DETAILED DESCRIPTION

[0020] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0021] Refer to the attached Figures 1 to 7 , an attached lifting protection platform of the present invention comprises an anti-falling device 1, a platform structure 2 and a lifting mechanism 3;

[0022] The anti-falling device 1 is used to be fixedly connected to the wall of the building, the lifting mechanism 3 is fixedly connected to the platform structure 2, and the lifting mechanism 3 is used to drive the platform structure 2 to move up and down on the anti-falling device 1;

[0023] The platform structure 2 includes a guide rail 21, a scaffolding board 22, an outer pole 23, an inner pole 24, a connecting brace 25 and a diagonal rod 26;

[0024] The guide rail 21, the scaffolding board 22, the outer pole 23 and the inner pole 24 are all made of aluminum alloy, and the connecting support 25 and the inclined rod 26 are all made of steel.

[0025] The guide rail 21 is fixedly connected to the inner pole 24, the guide rail 21 contacts the anti-falling device 1 and moves up and down on the anti-falling device 1, the outer pole 23 and the inner pole 24 are fixedly connected by a connecting support 25, the scaffolding board 22 is fixedly connected between the outer pole 23 and the inner pole 24 and is located above the connecting support 25, the top of the outer pole 23 is higher than the top of the inner pole 24, one end of the diagonal rod 26 is fixedly connected to the top of the outer pole 23, and the other end is fixedly connected to the top of the inner pole 24.

[0026] The working principle of the present invention is as follows: the lifting mechanism 3 is driven by an external power device, so that the lifting mechanism 3 can drive the platform structure 2 to move up and down. During the movement, the guide rail 21 of the platform structure 2 is always in contact with the anti-falling device 1 and is limited by the anti-falling device 1, ensuring that the platform structure 2 can only move vertically;

[0027] In the attached lifting protection platform, the weight of the platform structure 2 accounts for the largest proportion, so the platform structure 2 needs to be reduced in weight and optimized in structure so that its connection strength will not be reduced. Since the bending resistance of the aluminum alloy structure is poorer than that of the steel structure, the platform structure 2 generally only bears its own gravity in the vertical direction during the lifting process. Therefore, the inner and outer uprights 24 and 23 of the platform structure 2, as the main supporting structures in the vertical direction, will not bear the axial bending force. Therefore, the inner and outer uprights 24 and 23 are selected as aluminum alloy components to reduce the total amount, and the track mainly plays a guiding role. The track is basically not subject to external forces during the climbing process of the climbing frame, so the strength requirements are relatively low, and aluminum alloy components can also be selected. The scaffolding board 22 mainly plays the role of carrying workers. Although it needs to bear the longitudinal load imposed by the weight of the workers, since the scaffolding board 22 is arranged above the connecting support 25, the connecting support 25 can support the scaffolding board 22 to a certain extent to reduce the influence of the longitudinal load it is subjected to. The connecting brace 25 is a steel component connected between the inner and outer uprights 24 and 23, which plays a role in strengthening the horizontal stability and connection strength. The most likely cause of connection instability during the lifting and lowering of the platform structure 2 is the uneven wall surface, which causes the platform structure 2 to shake and deform in the horizontal direction. The steel connecting brace 25 has sufficient rigidity and can effectively avoid the deformation of the inner and outer uprights 24 and 23 caused by the shaking of the platform structure 2 as a whole. In addition, since the height of the top of the outer upright 23 needs to be higher than the inner upright 24 to ensure that the workers can use the outer upright 23 as a guardrail on the top scaffolding board 22, the diagonal brace 26 needs to be set at an angle, and the two ends are respectively fixed to the top of the inner and outer uprights 24 and 23, which can not only make the top of the inner and outer uprights 24 and 23 more stable, but also provide oblique support between the inner and outer uprights 24 and 23 to prevent the inner and outer uprights 24 or 23 from moving relative to each other, thereby improving the overall structural strength.

[0028] From the above description, it can be seen that the beneficial effects of the present invention are: the platform structure formed by combining aluminum alloy components and steel components can reduce the overall weight of the protection platform by at least 50% compared to the all-steel protection platform, while the inner and outer vertical poles form the longitudinal support structure body, and the connecting struts form the horizontal support structure body, thereby ensuring that the overall connection strength will not be reduced due to the use of aluminum alloy components; the reduced weight of the protection platform can make the assembly process more convenient, and reduce the power consumption of the motor during lifting, and at the same time avoid the excessive impact force when the protection platform falls, causing the anti-fall device to fail; the aluminum alloy components are corrosion-resistant, which can extend the life of the protection platform.

[0029] Further, an anti-falling hole 211 with a horizontal top surface is formed in the guide rail 21. A stopper 11 for preventing the guide rail 21 from falling is rotatably connected to the anti-falling device 1. The center of gravity of the stopper 11 does not coincide with the axis of the rotation shaft. The end of the stopper 11 away from the center of gravity contacts the surface where the anti-falling hole 211 of the guide rail 21 is located. A plane 111 in surface contact with the top surface of the anti-falling hole 211 is provided on the stopper 11.

[0030] As can be seen from the above description, when the guide rail and the anti-falling device move relative to each other, the center of gravity of the stopper does not coincide with the axis of the rotation shaft. After the stopper moves into the anti-falling hole, it will reset under its own weight, preventing the stopper from jamming the guide rail and preventing normal movement. When the guide rail falls, since the falling speed is much greater than the normal speed of the guide rail climbing or descending, the stopper on the anti-falling device cannot reset in time. Therefore, it will be pressed by the top surface of the anti-falling hole during the high-speed descent. The plane on the stopper can form a surface contact with the top surface of the anti-falling hole, increasing the force-bearing area of the stopper, thereby reducing the local pressure and preventing the stopper from failing due to excessive impact force.

[0031] Further, the stopper 11 includes a trigger pendulum block 112 and an anti-falling pendulum block 113. The trigger pendulum block 112 is rotatably connected to one end of the anti-falling pendulum block 113 away from the center of gravity. Inside the anti-falling device 1, a lower baffle 12 and an anti-falling baffle 13 for limiting the rotation range of the anti-falling pendulum block 113 relative to the anti-falling device 1 to 0 - 90 degrees are provided. The lower baffle 12 is located in the direction of the anti-falling pendulum block 113 rotating counterclockwise around the rotation shaft, and the anti-falling baffle 13 is located in the direction of the anti-falling pendulum block 113 rotating clockwise around the rotation shaft. An L-shaped limiting surface 114 for limiting the rotation range of the trigger pendulum block 112 relative to the anti-falling pendulum block 113 to 0 - 90 degrees is provided at one end of the anti-falling pendulum block 113 away from the center of gravity.

[0032] As can be seen from the above description, the end of the trigger pendulum block remains in contact with the surface of the guide rail. When the trigger pendulum block moves into the anti-falling hole, the two are separated. The anti-falling pendulum block resets under its own weight. If the guide rail falls, the descending speed of the guide rail is much greater than the reset speed of the anti-falling pendulum block, and the anti-falling pendulum block will be stuck in the anti-falling hole to support the guide rail.

[0033] Further, a support member 115 is fixedly connected to the surface of the trigger pendulum block 112 away from the rotation shaft and opposite to the L-shaped limiting surface 114.

[0034] As can be seen from the above description, the support member plays a role in transmitting power. When the trigger pendulum block contacts the surface of the guide rail and rotates, when the trigger pendulum block rotates to a certain angle, the end of the support member contacts the L-shaped limiting surface of the anti-falling pendulum block, and the trigger pendulum block and the anti-falling pendulum block rotate synchronously while remaining relatively stationary with each other.

[0035] Furthermore, the end of the trigger pendulum block 112 away from the rotation axis is in an acute angle.

[0036] It can be seen from the above description that the acute angle of the end of the trigger pendulum block is beneficial for preventing the track from getting stuck during the normal ascent and descent of the track.

[0037] Furthermore, the lifting mechanism 3 includes an upper hanging point 31, a lower hanging point 32 and an electric hoist 33. The upper hanging point 31 and the lower hanging point 32 are both fixedly connected to the platform structure 2. The upper hanging point 31 is located above the lower hanging point 32. The electric hoist 33 is connected to the upper hanging point 31. The lower hanging point 32 is connected to a pulley that cooperates with the electric hoist 33. The electric hoist 33 is connected to a pulling chain, and the bottom of the pulling chain is sleeved on the outside of the pulley.

[0038] Furthermore, the guide rail 21 is provided with a hole arranged along the length direction of the guide rail 21 , and a removable steel wire 212 is arranged in the hole. The hardness of the steel wire 212 is greater than the hardness of the guide rail 21 .

[0039] From the above description, it can be seen that there is a clearance fit between the steel wire and the hole. Under normal circumstances, the staff can easily remove the steel wire from the hole. When the guide rail is slightly deformed, the steel wire is harder and is not easy to deform along with the guide rail. Therefore, the steel wire will be stuck in the hole and cannot be removed. In this way, it is possible to quickly determine whether the guide rail is deformed, thereby improving the safety of the guide rail.

[0040] Furthermore, it also includes a metal protective net, which is fixedly connected between adjacent inner poles 24 or outer poles 23, and the bottom end of the metal protective net is fixedly connected to the scaffolding board 22.

[0041] It can be seen from the above description that the metal protective net can protect the workers standing on the scaffolding.

[0042] Furthermore, the platform structure 2 also includes a steel diagonal brace 27, which is fixedly connected between two adjacent inner uprights 24 and outer uprights 23, and two ends of the diagonal brace 27 are respectively fixedly connected to two upper and lower adjacent scaffolding boards 22.

[0043] From the above description, it can be seen that the diagonal bracing rod can make the connection between adjacent inner uprights or outer uprights more stable. At the same time, the two ends of the diagonal bracing rod are respectively connected to two adjacent upper and lower scaffolding boards, thereby improving the stability of the scaffolding boards.

[0044] Further, the guide rail 21 is prepared from raw materials in the following parts by mass: 0.1 part of copper, 0.7 - 1.3 parts of silicon, 0.5 part of iron, 0.4 - 1.0 part of manganese, 0.6 - 1.2 parts of magnesium, 0.2 part of zinc, 0.25 part of chromium, 0.1 part of titanium, and 95.35 - 97.15 parts of aluminum;

[0045] The scaffold board 22 is prepared from raw materials in the following parts by mass: 0.15 - 0.4 part of copper, 0.4 - 0.8 part of silicon, 0 - 0.7 part of iron, 0 - 0.15 part of manganese, 0.8 - 1.2 parts of magnesium, 0 - 0.25 part of zinc, 0.04 - 0.35 part of chromium, 0 - 0.15 part of titanium, and 96 - 98.61 parts of aluminum.

[0046] As can be seen from the above description, the raw material components of the aluminum alloy guide rail can endow it with bending resistance comparable to that of a steel guide rail, extending its service life; the raw material components of the aluminum alloy scaffold board can improve its toughness and reduce the possibility of cracking under repeated impacts.

[0047] Example 1

[0048] Such as Figure 1 and 2 , an attached lifting protection platform, comprising a falling prevention device 1, a platform structure 2, and a lifting mechanism 3;

[0049] The falling prevention device 1 is used for fixedly connecting to the wall surface of a building, the lifting mechanism 3 is fixedly connected to the platform structure 2, and the lifting mechanism 3 is used for driving the platform structure 2 to move up and down on the falling prevention device 1;

[0050] The platform structure 2 includes a guide rail 21, a scaffold board 22, an outer vertical rod 23, an inner vertical rod 24, a connecting brace 25, and a diagonal bracing rod 26;

[0051] The guide rail 21, the scaffold board 22, the outer vertical rod 23, and the inner vertical rod 24 are all aluminum alloy members, and the connecting brace 25 and the diagonal bracing rod 26 are all steel members;

[0052] The platform structure 2 further includes a steel diagonal bracing rod 27, the diagonal bracing rod 27 is fixedly connected between two adjacent inner vertical rods 24 and outer vertical rods 23, and both ends of the diagonal bracing rod 27 are fixedly connected to two adjacent scaffold boards 22 above and below;

[0053] The guide rail 21 is fixedly connected to the inner pole 24, the guide rail 21 contacts the anti-falling device 1 and moves up and down on the anti-falling device 1, the outer pole 23 and the inner pole 24 are fixedly connected by a connecting support 25, the scaffolding board 22 is fixedly connected between the outer pole 23 and the inner pole 24 and is located above the connecting support 25, the top of the outer pole 23 is higher than the top of the inner pole 24, one end of the inclined rod 26 is fixedly connected to the top of the outer pole 23, and the other end is fixedly connected to the top of the inner pole 24, the guide rail 21 is provided with a hole arranged along the length direction of the guide rail 21, and a removable steel wire 212 is arranged in the hole, and the hardness of the steel wire 212 is greater than the hardness of the guide rail 21;

[0054] like Figure 3 The guide rail 21 is provided with an anti-fall hole 211 whose top surface is a horizontal plane, and there is a cross bar between adjacent anti-fall holes. The anti-fall device 1 is rotatably connected with a stopper 11 for preventing the guide rail 21 from falling. The center of gravity of the stopper 11 does not coincide with the axis of the rotating shaft, and the end of the stopper 11 away from the center of gravity contacts the surface where the anti-fall hole 211 of the guide rail 21 is located. The stopper 11 is provided with a plane 111 that is in surface contact with the top surface of the anti-fall hole 211.

[0055] The stopper 11 comprises a trigger pendulum block 112 and an anti-falling pendulum block 113, wherein the trigger pendulum block 112 is rotatably connected to one end of the anti-falling pendulum block 113 away from the center of gravity, and a lower baffle 12 and an anti-falling baffle 13 are provided inside the anti-falling device 1 for limiting the rotation range of the anti-falling pendulum block 113 relative to the anti-falling device 1 within a range of 0 to 90 degrees, wherein the lower baffle 12 is located in the direction in which the anti-falling pendulum block 113 rotates counterclockwise around the rotation axis, and the anti-falling baffle 13 is located in the direction in which the anti-falling pendulum block 113 rotates clockwise around the rotation axis; an L-shaped limiting surface 114 is provided on one end of the anti-falling pendulum block 113 away from the center of gravity for limiting the rotation range of the trigger pendulum block 112 relative to the anti-falling pendulum block 113 within a range of 0 to 90 degrees, and a support member 115 is fixedly connected to a surface of the end of the trigger pendulum block 112 away from the rotation axis opposite to the L-shaped limiting surface 114, and the end of the trigger pendulum block 112 away from the rotation axis is in an acute angle.

[0056] The anti-fall device includes the following four states: static state (such as Figure 4 ), rising state (such as Figure 5 ), descending state (such as Figure 6 ) and fall jam status (such as Figure 7 ).

[0057] like Figure 4 In the static state, the external guide rail 21, the trigger pendulum block 112 and the anti-fall pendulum block 113 all remain stationary, wherein the anti-fall pendulum block 113 remains vertical under the action of its own gravity, while the end of the trigger pendulum block 112 away from the rotation axis opens outward and is located outside the anti-fall device 1.

[0058] As Figure 5 , in the ascending state, under the action of the lifting power, the external guide rail 21 moves upward. When the trigger pendulum 112 touches the crossbar on the guide rail 21, the crossbar will push the trigger pendulum 112 to rotate counterclockwise around the rotation axis, while the anti-falling pendulum 113 remains stationary; when the trigger pendulum 112 moves into the anti-falling hole 211 between the crossbars, since the trigger pendulum 112 is out of contact with the crossbar, the trigger pendulum 112 rotates clockwise and resets under its own weight and falls into the anti-falling hole 211; as the guide rail 21 continues to move upward, when the trigger pendulum 112 touches the crossbar on the guide rail 21, the crossbar will push the trigger pendulum 112 to rotate counterclockwise around the rotation axis again, and so on in a cycle.

[0059] As Figure 6 , in the descending state, under the action of the lifting power, the external guide rail 21 moves slowly downward. When the trigger pendulum 112 touches the crossbar position, the surface of the crossbar contacts the end of the trigger pendulum 112, and the crossbar pushes the trigger pendulum 112 to rotate clockwise. At the same time, the end of the trigger pendulum 112 also moves relative to the surface of the descending crossbar. When the trigger pendulum 112 rotates to contact the bottom end of the L-shaped limiting surface 33 of the light part 31, the trigger pendulum 112 cannot continue to rotate relative to the anti-falling pendulum 113, so it will drive the anti-falling pendulum 113 to rotate clockwise together until the trigger pendulum 112 touches the top end of the lower baffle 5 and cannot continue to rotate. As the guide rail 21 continues to move downward, when the crossbar moves out of contact with the trigger pendulum 112, that is, when the trigger pendulum 112 falls into the anti-falling hole 211, the anti-falling pendulum 113 quickly returns to the stationary state by its own gravity.

[0060] As Figure 7 , in the falling and jamming state, when the protection platform loses the supporting force and the lifting force, resulting in the rapid descent of the protection platform and the guide rail 21, and the trigger pendulum 112 is separated from the crossbar of the guide rail 21 and enters the anti-falling hole 211, since the descending speed of the guide rail 21 is much greater than the reset speed of the anti-falling pendulum 113, the time for the upper crossbar of the guide rail to descend to the upper end of the anti-falling pendulum 113 is less than the reset time of the anti-falling pendulum 113. The anti-falling pendulum 113 has no time to quickly reset and is impacted downward by the upper crossbar, and is lever-blocked by the anti-falling baffle 13 in the anti-falling device 1 and the crossbar of the guide rail with the rotation axis as the fulcrum. The anti-falling pendulum 113 is stuck in the anti-falling hole 211, and the guide rail 21 is stuck and cannot descend, thus realizing the anti-falling of the protection platform and the guide rail 21.

[0061] The lifting mechanism 3 includes an upper hanging point 31, a lower hanging point 32 and an electric hoist 33. The upper hanging point 31 and the lower hanging point 32 are both fixedly connected to the platform structure 2. The upper hanging point 31 is located above the lower hanging point 32. The electric hoist 33 is connected to the upper hanging point 31. The lower hanging point 32 is connected to a pulley that matches the electric hoist 33. The electric hoist 33 is connected to a pulling chain, and the bottom of the pulling chain is sleeved on the outside of the pulley.

[0062] It also includes a metal protective net, which is fixedly connected between adjacent inner poles 24 or outer poles 23 , and the bottom end of the metal protective net is fixedly connected to the scaffolding board 22 .

[0063] The guide rail 21 comprises the following raw materials in percentage by mass: 0.1% copper, 0.7% silicon, 0.5% iron, 0.4% manganese, 0.6% magnesium, 0.2% zinc, 0.25% chromium, 0.1% titanium and 97.15% aluminum;

[0064] The scaffolding board 22 includes the following raw materials in percentage by mass: 0.15% copper, 0.4% silicon, 0.8% magnesium, 0.04% chromium and 98.61% aluminum.

[0065] Embodiment 2

[0066] An attached lifting protection platform similar to the first embodiment, except that:

[0067] The guide rail 21 comprises the following raw materials in percentage by mass: 0.1% copper, 1.3% silicon, 0.5% iron, 1.0% manganese, 1.2% magnesium, 0.2% zinc, 0.25% chromium, 0.1% titanium and 95.35% aluminum;

[0068] The scaffolding board 22 includes the following raw materials in percentage by mass: 0.4% copper, 0.8% silicon, 0.7% iron, 0.15% manganese, 1.2% magnesium, 0.25% zinc, 0.35% chromium, 0.15% titanium and 96% aluminum.

[0069] Embodiment 3

[0070] An attached lifting protection platform similar to the first embodiment, except that:

[0071] The guide rail 21 comprises the following raw materials in percentage by mass: 0.1% copper, 1.0% silicon, 0.5% iron, 0.6% manganese, 0.8% magnesium, 0.2% zinc, 0.25% chromium, 0.1% titanium and 96.45% aluminum;

[0072] The scaffolding board 22 includes the following raw materials in percentage by mass: 0.3% copper, 0.6% silicon, 0.4% iron, 0.05% manganese, 1.0% magnesium, 0.15% zinc, 0.1% chromium, 0.05% titanium and 97.35% aluminum.

[0073] In summary, the beneficial effects provided by the present invention are: the platform structure formed by combining aluminum alloy components and steel components can reduce the overall weight of the protection platform by at least 50% compared to the all-steel protection platform, and at the same time, the inner and outer vertical poles form the longitudinal support structure body, and the connecting brace forms the horizontal support structure body, thereby ensuring that the overall connection strength will not be reduced due to the use of aluminum alloy components; the reduced weight of the protection platform can make the assembly process more convenient, and reduce the power consumption of the motor during lifting and lowering, and at the same time can also avoid the impact force when the protection platform falls, causing the anti-fall device to fail due to excessive impact; the aluminum alloy components are corrosion-resistant, which can extend the service life of the protection platform. When the guide rail and the anti-fall device move relative to each other, the center of gravity of the block does not coincide with the axis of the rotating shaft. After the block moves into the anti-fall hole, it will reset under the action of its own weight, avoiding the block from getting stuck in the guide rail and being unable to move normally. When the guide rail falls, the falling speed is much faster than the normal speed of the guide rail climbing or descending, so the block on the anti-fall device cannot be reset in time, and will be pressed by the top surface of the anti-fall hole during the high-speed descent. The plane on the block can form a surface contact with the top surface of the anti-fall hole, which increases the force area of ​​the block, thereby reducing the local pressure and avoiding the block from being subjected to excessive impact force and causing failure. The end of the trigger pendulum block keeps in contact with the surface of the guide rail, and when the trigger pendulum block moves into the anti-fall hole, the two break contact, and the anti-fall pendulum block is reset under the action of its own weight. If the guide rail falls, the guide rail descent speed is much faster than the anti-fall pendulum block reset speed, and the anti-fall pendulum block will be stuck in the anti-fall hole to support the guide rail. The support plays a role in transmitting power. The trigger pendulum block contacts the surface of the guide rail and rotates. When the trigger pendulum block rotates to a certain angle, the end of the support member contacts the L-shaped limit surface of the anti-fall pendulum block, and the trigger pendulum block and the anti-fall pendulum block rotate synchronously, while the two remain relatively still. The sharp angle of the end of the trigger pendulum block is conducive to preventing the track from being stuck during the normal rise and fall of the track. There is a gap fit between the steel wire and the hole. Under normal circumstances, the staff can easily remove the steel wire from the hole. When the guide rail is slightly deformed, the steel wire is harder and is not easy to deform with the guide rail. Therefore, the steel wire will be stuck in the hole and cannot be removed. In this way, it is possible to quickly determine whether the guide rail is deformed, thereby improving the safety of the guide rail. The metal protective net can protect the staff standing on the scaffolding board. The diagonal brace can make the connection between adjacent inner or outer poles more stable. At the same time, the two ends of the diagonal brace are respectively connected to the two adjacent upper and lower scaffolding boards, which improves the stability of the scaffolding board. The raw material composition of the aluminum alloy guide rail can make it have a bending resistance that is no less than that of the steel guide rail, extending its service life; the raw material composition of the aluminum alloy scaffolding board can increase its toughness and reduce the possibility of cracking due to repeated impact.

[0074] The above are only embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in the relevant technical fields, shall be similarly included in the patent protection scope of the present invention.

Claims

1. An attached lifting protection platform, characterized in that, It includes anti-fall device, platform structure and lifting mechanism; The anti-falling device is used to be fixedly connected to the wall of the building, the lifting mechanism is fixedly connected to the platform structure, and the lifting mechanism is used to drive the platform structure to move up and down on the anti-falling device; The platform structure includes guide rails, scaffolding boards, outer poles, inner poles, connecting braces and diagonal rods; The guide rails, scaffolding boards, outer poles and inner poles are all made of aluminum alloy, and the connecting braces and diagonal rods are all made of steel; The guide rail is fixedly connected to the inner pole, the guide rail contacts the anti-falling device and moves up and down on the anti-falling device, the outer pole and the inner pole are fixedly connected by a connecting support, the scaffolding board is fixedly connected between the outer pole and the inner pole and is located above the connecting support, the top of the outer pole is higher than the top of the inner pole, one end of the inclined rod is fixedly connected to the top of the outer pole, and the other end is fixedly connected to the top of the inner pole; The guide rail is provided with a hole arranged along the length direction of the guide rail, and a removable steel wire is arranged in the hole, and the hardness of the steel wire is greater than the hardness of the guide rail; The platform structure also includes a steel diagonal brace, which is fixedly connected between two adjacent inner uprights and an outer upright, and two ends of the diagonal brace are respectively fixedly connected to two upper and lower adjacent scaffolding boards.

2. The attached lifting protection platform according to claim 1, wherein The guide rail is provided with an anti-fall hole whose top surface is a horizontal plane, and the anti-fall device is rotatably connected with a stopper for preventing the guide rail from falling. The center of gravity of the stopper does not coincide with the axis of the rotating shaft, and the end of the stopper away from the center of gravity contacts the surface where the anti-fall hole of the guide rail is located, and the stopper is provided with a plane in surface contact with the top surface of the anti-fall hole.

3. The attached lifting protection platform according to claim 2, characterized in that, The block includes a trigger pendulum block and an anti-falling pendulum block, the trigger pendulum block is rotatably connected to one end of the anti-falling pendulum block away from the center of gravity, the anti-falling device is internally provided with a lower baffle and an anti-falling baffle for limiting the rotation range of the anti-falling pendulum block relative to the anti-falling device to 0-90 degrees, the lower baffle is located in the direction of the anti-falling pendulum block rotating counterclockwise around the rotation axis, and the anti-falling baffle is located in the direction of the anti-falling pendulum block rotating clockwise around the rotation axis; an L-shaped limiting surface is provided on the end of the anti-falling pendulum block away from the center of gravity for limiting the rotation range of the trigger pendulum block relative to the anti-falling pendulum block to 0-90 degrees.

4. The attached lifting protection platform according to claim 3, characterized in that, The end of the trigger pendulum block away from the rotating shaft is fixedly connected to a support member on a surface opposite to the L-shaped limiting surface.

5. The attached lifting protection platform according to claim 3, characterized in that, The end of the trigger pendulum block away from the rotation axis is in an acute angle shape.

6. The attached lifting protection platform according to claim 1, wherein, The lifting mechanism includes an upper hanging point, a lower hanging point and an electric hoist. The upper hanging point and the lower hanging point are both fixedly connected to the platform structure. The upper hanging point is located above the lower hanging point. The electric hoist is connected to the upper hanging point. The lower hanging point is connected to a pulley that matches the electric hoist. The electric hoist is connected to a pulling chain. The bottom of the pulling chain is sleeved on the outside of the pulley.

7. The attached lifting protection platform according to claim 1, characterized in that, It also includes a metal protective net, which is fixedly connected between adjacent inner poles or outer poles, and the bottom end of the metal protective net is fixedly connected to the scaffolding board.

8. The attached lifting protection platform according to claim 1, characterized in that, The guide rail is prepared from raw materials with the following mass ratios: 0.1 part of copper, 0.7 - 1.3 parts of silicon, 0.5 part of iron, 0.4 - 1.0 parts of manganese, 0.6 - 1.2 parts of magnesium, 0.2 part of zinc, 0.25 part of chromium, 0.1 part of titanium, and 95.35 - 97.15 parts of aluminum; The scaffold board is prepared from raw materials with the following mass ratios: 0.15 - 0.4 part of copper, 0.4 - 0.8 parts of silicon, 0 - 0.7 part of iron, 0 - 0.15 part of manganese, 0.8 - 1.2 parts of magnesium, 0 - 0.25 part of zinc, 0.04 - 0.35 part of chromium, 0 - 0.15 part of titanium, and 96 - 98.61 parts of aluminum.

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