A sliding rail type mobile platform for a construction tower crane

Abstract

The present invention discloses a sliding rail type mobile platform for a construction tower crane, which relates to the technical field of sliding rail type mobile platforms, and includes a tower crane main body, a mobile device, and a plurality of fixing members, and the fixing members are all fixedly connected to the mobile device. Two sliding rails are fixedly installed on the side of the tower crane main body, two support shafts are fixedly installed on the fixing members, rolling hubs are rotatably installed on the support shafts, and the rolling hubs are all slidably installed in the corresponding sliding rails. The advantages are as follows: When the tower crane main body shakes, through the cooperation of the pushing mechanism, the extrusion mechanism, and the pressure regulating mechanism, the contact pressure between the relative two sides of the balanced rolling hub and the sliding rail can be realized, which can help improve the stability and safety of the mobile device when driving the staff to lift. At the same time, if the mobile device stalls during lifting, at this time, through the speed regulating component, the moving speed of the mobile device can be slowed down to a certain extent, further improving the safety of the mobile device during the lifting process.

Description

Technical Field

[0001] The present invention relates to the technical field of sliding-rail type mobile platforms, and particularly to a sliding-rail type mobile platform for a construction tower crane. Background Art

[0002] With the continuous development of the construction industry, the increasing height and scale of buildings, the demand for high-altitude transportation and precise positioning of building materials is also increasing. The construction tower crane is widely used in the existing construction industry due to its powerful lifting capacity, high space utilization rate and precise lifting function. At the same time, to improve the convenience and efficiency of workers getting on and off the construction tower crane, a lifting device and a mobile platform are usually added to the existing construction tower crane. Through the cooperation of the two, the convenience of workers getting on and off the construction tower crane is improved;

[0003] At the same time, to ensure the stability of the mobile device driving the worker to lift and lower, a sliding rail and rollers are usually added between the existing construction tower crane and the mobile device. However, when the construction tower crane shakes due to factors such as wind, it is easy to increase the pressure on one side of the contact between the sliding rail and the roller. If the contact pressure between this side of the roller and the sliding rail is large, or continues to increase, it is easy to cause risks such as jamming and vibration during the lifting and lowering of the mobile device, reducing the stability and safety of the mobile device driving the worker to lift and lower on the tower crane main body 1. For this reason, we propose a sliding-rail type mobile platform for a construction tower crane to solve the above problems. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems proposed in the background art, and to propose a sliding-rail type mobile platform for a construction tower crane.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A sliding-rail type mobile platform for a construction tower crane, including a tower crane main body, a mobile device, and a plurality of fixing members, and the fixing members are all fixedly connected to the mobile device. Two sliding rails are fixedly installed on the side of the tower crane main body. Two support shafts are fixedly installed on each of the fixing members. A rolling hub is rotatably installed on each of the support shafts, and the rolling hubs are all slidably installed in the corresponding sliding rails. An adjusting assembly is commonly provided between the rolling hubs for balancing the friction between the opposite sides of the rolling hubs and the corresponding sliding rails. An air adjusting assembly is commonly provided between the rolling hubs;

[0007] The adjusting assembly includes support frames respectively fixedly installed on the support shafts. Two rotating shafts are rotatably installed on each of the support frames. A roller body is fixedly installed on each of the rotating shafts. A pushing mechanism is commonly installed between the rotating shafts. An extrusion mechanism is commonly installed between the support shafts;

[0008] The air regulating assembly includes two air bags respectively and fixedly installed on the side of the rolling hub, and the right air bags are all hermetically penetrated and slidably installed on the corresponding support shafts. A pressure regulating mechanism is commonly installed between the support shafts for regulating the air pressure of the air bags.

[0009] In the above-mentioned sliding rail type mobile platform for construction tower cranes, the pushing mechanism includes discs respectively and fixedly installed on the rotating shaft, and placing grooves uniformly distributed in a ring shape are formed on the discs.

[0010] Spring telescopic rods are fixedly installed on the placing grooves, limit frames are fixedly installed at one ends of the spring telescopic rods, cylinders are slidably installed on the limit frames, arc-shaped plates are fixedly installed on one sides of the cylinders, limit discs matched with the corresponding arc-shaped plates are rotatably installed on the rotating shaft, and a limiting component is commonly installed between the discs.

[0011] In the above-mentioned sliding rail type mobile platform for construction tower cranes, the limiting component includes a plurality of sliding grooves respectively formed on the discs, and the sliding grooves are all communicated with the corresponding placing grooves. Sliding blocks are slidably installed on the sliding grooves, and the sliding blocks are fixedly connected with the corresponding limit frames.

[0012] In the above-mentioned sliding rail type mobile platform for construction tower cranes, the extrusion mechanism includes two limit members respectively and fixedly installed on the support shafts. Rod bodies are penetrated and slidably installed on the limit members, connecting rods are fixedly installed on the rod bodies, pushing plates matched with the corresponding arc-shaped plates are fixedly installed on the connecting rods, and a pressing component is commonly installed between the connecting rods.

[0013] In the above-mentioned sliding rail type mobile platform for construction tower cranes, the pressing component includes extrusion plates respectively and fixedly installed at one ends of the rod bodies. First limiting grooves are formed on the support shafts, sealing plates are fixedly installed at the other ends of the rod bodies, and the sealing plates are hermetically and slidably installed on the corresponding first limiting grooves.

[0014] In the above-mentioned sliding rail type mobile platform for construction tower cranes, the pressure regulating mechanism includes second limiting grooves respectively formed on the support shafts, and the second limiting grooves are all communicated with the corresponding first limiting grooves. Square openings communicated with the corresponding second limiting grooves are formed on the support shafts. Two pistons are hermetically and slidably installed on the second limiting grooves, and a shielding component is commonly installed between the second limiting grooves.

[0015] In the above-mentioned sliding rail type mobile platform for construction tower cranes, the shielding component includes two baffles respectively and fixedly installed on the second limiting grooves, and an air pipe is fixedly communicated between the corresponding two baffles.

[0016] In the above-mentioned sliding rail type mobile platform for a construction tower crane, a speed regulation component is jointly arranged between the support shafts. The speed regulation component includes ventilation holes respectively opened on the support shafts. Air valves are installed on the ventilation holes. The air valves are fixedly communicated with air guide pipes, and the air guide pipes are hermetically penetrated and fixedly installed on the corresponding support shafts. One end of each air guide pipe is hermetically penetrated and fixedly installed on the corresponding air delivery pipe. A plurality of exhaust pipes are fixedly communicated with one end of each air guide pipe.

[0017] In the above-mentioned sliding rail type mobile platform for a construction tower crane, a mobile device is fixedly installed between the fixing pieces.

[0018] Compared with the existing technology, the advantages of the present invention are as follows:

[0019] 1: If the main body of the tower crane shakes, resulting in an increase in the contact pressure between one side of the rolling hub and the corresponding sliding rail and driving the rotation of the roller on that side, at this time, through the cooperation of the pushing mechanism and the squeezing mechanism, the contact pressure between the opposite side of the rolling hub and the corresponding sliding rail can be adaptively increased, achieving the effect of balancing the contact pressure between the opposite sides of the rolling hub and the sliding rail, which helps to improve the stability and safety during the lifting process of the mobile device driving the staff.

[0020] 2: If the main body of the tower crane shakes, resulting in an increase in the contact pressure between the sliding rail and one side of the airbag, at this time, through the pressure regulating mechanism, the gas pressure inside the airbag on the opposite side can be increased, increasing the contact pressure between the airbag on the opposite side and the sliding rail, thereby achieving the effect of balancing the contact pressure between the two opposite airbags, that is, between the opposite sides of the rolling hub and the sliding rail, which helps to further improve the stability and safety during the lifting process of the mobile device driving the staff.

[0021] 3: When the mobile device stalls during lifting or lowering, through the cooperation of the speed regulating component and the corresponding two rollers and airbags, the friction force between the periphery of the rolling hub and the corresponding sliding rail can be increased. At this time, through the sum of the frictional resistances between the multiple rolling hubs and the two sliding rails, the moving speed of the mobile device can be slowed down to a certain extent, further improving the safety of the mobile device during the lifting process. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of a sliding rail type mobile platform for a construction tower crane proposed by the present invention;

[0023] Figure 2 is Figure 1 an exploded view of the mobile device and the two sliding rails in

[0024] Figure 3 is Figure 2 a top view of the sliding rail in

[0025] Figure 4 is Figure 3 the three-dimensional schematic diagram after the middle slide rail is sectioned;

[0026] Figure 5 Figure 4 the sectional schematic diagram of the middle rolling hub;

[0027] Figure 6 is Figure 5 the structural schematic diagram of the middle rolling hub after rotating a certain angle;

[0028] Figure 7 is Figure 6 the structural schematic diagram of the internal components of the middle rolling hub;

[0029] Figure 8 is Figure 7 the structural schematic diagram of the middle adjusting component;

[0030] Figure 9 is Figure 8 the structural schematic diagram of the middle pushing mechanism;

[0031] Figure 10 is Figure 9 the enlarged structural schematic diagram of part A in the middle;

[0032] Figure 11 is Figure 4 the sectional schematic diagram of the middle rolling hub after rotating a certain angle;

[0033] Figure 12 is Figure 11 the enlarged structural schematic diagram of part B in the middle;

[0034] Figure 13 is Figure 12 the structural schematic diagram of the middle air regulating component;

[0035] Figure 14 is Figure 13 the structural schematic diagram of the middle pressure regulating mechanism;

[0036] Figure 15 is Figure 14 the enlarged structural schematic diagram of part C in the middle;

[0037] Figure 16 is Figure 15 the structural schematic diagram of the middle speed regulating component;

[0038] Figure 17 is Figure 16 the structural schematic diagram of the internal components of the middle support shaft;

[0039] Figure 18 is Figure 17 the enlarged structural schematic diagram of part D in the middle.

[0040] In the figure: 1, tower crane main body; 2, mobile device; 3, slide rail; 4, fixing piece; 5, support shaft; 6, rolling hub;

[0041] 7, adjusting component; 71, support frame; 72, rotating shaft; 73, roller body; 74, placing groove; 75, limiting disc; 76, disc; 77, limiting piece; 78, rod body; 79, pressing plate; 710, sealing plate; 711, pushing plate; 712, connecting rod; 713, spring telescopic rod; 714, limiting frame; 715, cylinder; 716, arc plate; 717, chute; 718, sliding block; 719, first limiting groove;

[0042] 8, air regulating component; 81, airbag; 82, second limiting groove; 83, piston; 84, baffle; 85, air delivery pipe; 86, square opening;

[0043] 9, speed regulating component; 91, air valve; 92, air guide pipe; 93, exhaust pipe. Specific embodiments

[0044] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] Refer to Figures 1 - 18 , a slide rail type mobile platform for a construction tower crane, including a tower crane main body 1, a mobile device 2, and a plurality of fixing pieces 4, and the fixing pieces 4 are all fixedly connected to the mobile device 2. Two slide rails 3 are fixedly installed on the side of the tower crane main body 1. Two support shafts 5 are fixedly installed on the fixing pieces 4. Rolling hubs 6 are rotatably installed on the support shafts 5, and the rolling hubs 6 are all slidably installed in the corresponding slide rails 3. An adjusting component 7 is commonly arranged between the rolling hubs 6 for balancing the frictional forces between the opposite sides of the rolling hubs 6 and the corresponding slide rails 3. An air regulating component 8 is commonly arranged between the rolling hubs 6.

[0046] The tower crane main body 1 shown in the accompanying drawings of the present invention is a partial structural schematic diagram of an existing construction tower crane. Figure 1 When the staff needs to go up and down the tower crane main body 1, it can be driven by the cooperation of the mobile device 2 and an existing lifting device (such as the vertical lifting driving force formed by the cooperation of a driving motor, a hoist, and a towing rope) to drive the staff to automatically lift and lower. For example, when the staff needs to reach the top of the construction tower crane, first, the door body on the mobile device 2 is opened (from

[0047] When the staff needs to go up and down the tower crane main body 1, it can be driven by the cooperation of the mobile device 2 and an existing lifting device (such as the vertical lifting driving force formed by the cooperation of a driving motor, a hoist, and a towing rope) to drive the staff to automatically lift and lower. For example, when the staff needs to reach the top of the construction tower crane, first, the door body on the mobile device 2 is opened (from Figure 1As can be seen, after the staff member stands firm inside the mobile device 2 and closes the door body, the existing lifting device can be activated to drive the mobile device 2 to move the staff member upward. When the mobile device 2 moves to the top of the construction tower crane, the operation of the lifting device is stopped at this time. The staff member can enter the operating platform provided at the top of the tower crane main body 1 by opening the door body on the side of the mobile device 2.

[0048] During the operation of the existing lifting device to drive the mobile device 2 to lift and lower the staff member, through the cooperation of multiple rolling hubs 6 and two sliding rails 3, the limit of the moving direction of the mobile device 2 can be realized, ensuring that the mobile device 2 always reciprocates vertically, which can help improve the stability of the mobile device 2 to drive the staff member to move up and down.

[0049] Refer to Figures 1 - 12 , the adjusting assembly 7 includes support frames 71 respectively and fixedly installed on the support shaft 5. Two rotating shafts 72 are rotatably installed on the support frames 71. Rollers 73 are fixedly installed on the rotating shafts 72. A pushing mechanism is commonly installed between the rotating shafts 72, and a pressing mechanism is commonly installed between the support shafts 5.

[0050] It is set that the inner and outer side walls of the two sliding rails 3, the inner and outer side walls of multiple rolling hubs 6, and multiple rollers 73 are all made of hard materials, such as hard materials with good wear resistance like chrome-plated carbon steel. And in the initial state, the rollers 73 are in contact with the inner side walls of the corresponding rolling hubs 6, and the friction between the two is small. When the existing lifting device operates to drive the mobile device 2 to move up and down, when the rolling hub 6 rolls and displaces inside the corresponding sliding rail 3, at this time, due to the static friction between the rolling hub 6 and the corresponding roller 73, the roller 73 will not rotate together with the corresponding rolling hub 6.

[0051] During the actual operation of the tower crane, when the tower crane main body 1 shakes due to external factors such as wind force, a force that is not perpendicular to the sliding rail 3 will be formed. According to the principle of force decomposition, this force can be decomposed into two component forces. One is the component force perpendicular to the sliding rail 3, and the other is the component force along the sliding rail 3. Among them, the component force perpendicular to the sliding rail 3 will affect the normal pressure between the rolling hub 6 and the corresponding sliding rail 3, resulting in its change. For example, when the tower crane main body 1 shakes to one side, the normal pressure between the rolling hub 6 and the sliding rail 3 on that side will increase, and then the contact pressure between the rolling hub 6 and the sliding rail 3 on that side will also increase accordingly;

[0052] When the contact pressure between one side of the rolling hub 6 and the corresponding slide rail 3 increases, the frictional force between that side of the rolling hub 6 and the slide rail 3 will increase accordingly. When the contact pressure between the two is too large, that is, the frictional force is too large, it is likely to cause risks such as jamming and vibration during the lifting process of the mobile device 2, reducing the stability and safety of the mobile device 2 when driving the staff to move up and down.

[0053] As Figure 5 shown in the direction, if the tower crane main body 1 sways to the right under the influence of factors such as wind force, the two slide rails 3 will also sway to the right accordingly. When the contact pressure between the left side of the rolling hub 6 and the inner side wall of the slide rail 3 continues to increase, due to the relative motion trend between the inner side wall of the rolling hub 6 and the left roller body 73, the frictional force between the two will also increase accordingly. The increased frictional force will exert a tangential force on the roller body 73, thereby driving the roller body 73 on that side to drive the corresponding rotating shaft 72 to rotate.

[0054] Referring to Figures 1 - 12 , the pushing mechanism includes discs 76 respectively fixedly installed on the rotating shafts 72. Annularly and evenly distributed placement grooves 74 are formed on the discs 76 (drawn but not labeled in the figure, visible from Figure 10 ), telescopic springs 713 are fixedly installed on the placement grooves 74. One ends of the telescopic springs 713 are fixedly installed with limit frames 714, cylinders 715 are slidably installed on the limit frames 714, arc-shaped plates 716 are fixedly installed on one sides of the cylinders 715, and limit discs 75 are rotatably installed on the rotating shafts 72 and are matched with the corresponding arc-shaped plates 76. A limiting component is commonly installed between the discs 716.

[0055] The limiting component includes a plurality of sliding grooves 717 respectively formed on the discs 76, and the sliding grooves 717 are all communicated with the corresponding placement grooves 74. Sliding blocks 718 are slidably installed on the sliding grooves 717, and the sliding blocks 718 are all fixedly connected with the corresponding limit frames 714 (when the limit frame 714 is stressed and moves out of the corresponding placement groove 74, at this time, through the cooperation of the corresponding two sliding blocks 718 and the two sliding grooves 717, it can help improve the stability of the movement of the limit frame 714, that is, help improve the stability of the limit frame 714 driving the corresponding cylinder 715 and arc-shaped plate 716 to move).

[0056] The extrusion mechanism includes two limit members 77 respectively fixedly installed on the support shaft 5. Rod bodies 78 are penetrated and slidably installed on the limit members 77. Connecting rods 712 are fixedly installed on the rod bodies 78. Pushing plates 711 matched with the corresponding arc-shaped plates 716 are fixedly installed on the connecting rods 712. A pressing component is commonly installed between the connecting rods 712.

[0057] The pressing member includes a pressing plate 79 fixedly installed at one end of the rod body 78 respectively. A first limiting groove 719 is provided on each of the support shafts 5. A sealing plate 710 is fixedly installed at the other end of the rod body 78 (at this time, one end and the other end can be referred to Figure 8 , Figure 8 In the attached drawing, the position where the roller body 73 is located is regarded as one end, and the position where the sealing plate 710 is located is regarded as the other end), and the sealing plate 710 is hermetically and slidably installed in the corresponding first limiting groove 719 (a first return spring is fixedly installed between the sealing plate 710 and the side wall of the corresponding first limiting groove).

[0058] A plurality of pressing plates 79 and a plurality of pushing plates 711 are made of elastic materials, such as polyurethane, natural rubber, etc. Through their own elasticity, they can undergo elastic deformation when subjected to extrusion force, and when the force disappears, they can return to the initial shape through their own elasticity. At the same time, between a plurality of pressing plates 79 and the corresponding roller body 73, in the initial state, they are all in a fitting state, and between a plurality of pushing plates 711 and the corresponding arc-shaped plate 716, in the initial state, they are also all in a fitting state.

[0059] At the same time, the first limiting groove 719 is provided at the position between two adjacent sealing plates 710, and in the initial state, it is all in a state filled with gas.

[0060] When the contact pressure between the left side of the hub 6 and the inner side wall of the corresponding slide rail 3 continuously increases and drives the left roller body 73 and the rotating shaft 72 to rotate (as Figure 6 shown in the direction), the rotating shaft 72 will drive the corresponding disc 76 to rotate together. When the disc 76 drives a plurality of cylinders 715 thereon to intermittently rotate to its right side and the movement limit of the corresponding arc-shaped plate 716 by the corresponding limit disc 75 disappears (as Figure 8 shown in the direction), at this time, the centrifugal force generated during the rotation of the disc 76 can drive the cylinder 715 to drive the corresponding arc-shaped plate 716 to move to the right together (a small friction force exists between a plurality of cylinders 715 and the corresponding limit frame 714, and only the small centrifugal force generated by the rotation of the rotating shaft 72 driving the corresponding disc 76 can throw the cylinders 715 on the disc 76 out). The thrust generated by the movement of the arc-shaped plate 716 to the right on the corresponding pushing plate 711 can push the pushing plate 711 to drive the corresponding connecting rod 712, rod body 78 and pressing plate 79 to move to the right together;

[0061] When the pushing plate 711 is driven by force to drive the rod body 78, the pressing plate 79 and the sealing plate 710 to move to the right, at this time, the sealing plate 710 can push the gas between it and the adjacent sealing plate 710 to drive the right sealing plate 710 and the rod body 78 to move to the right together (combining Figure 11 with Figure 12in the shown direction), while the right rod body 78 is forced to move to the right. By squeezing the corresponding extrusion plate 79, the extrusion force applied to the right roller body 73 is transmitted between the right side of the rolling hub 6 and the slide rail 3. In this way, by increasing the contact pressure between the right side of the rolling hub 6 and the slide rail 3, the effect of balancing the contact pressure and friction force between the left and right sides of the rolling hub 6 and the slide rail 3 can be achieved, which helps to improve the uniformity of the contact pressure between the left and right sides of the rolling hub 6 and the slide rail 3 when the tower crane main body 1 shakes, and helps to improve the stability and safety during the process of the mobile device 2 driving the staff up and down.

[0062] Meanwhile, as Figure 5 shown in the direction, if the contact pressure between the left inner wall of the slide rail 3 and the left side of the rolling hub 6 continues to increase and the tangential friction force between the inner wall of the rolling hub 6 and the left roller body 73 continues to increase, at this time, the force on this roller body 73 drives the rotational speed of the corresponding rotating shaft 72 to increase accordingly. When the centrifugal force generated during the rotation of the corresponding disc 76 driven by the rotating shaft 72 is greater than the elastic restoring force and static friction force of the corresponding plurality of spring telescopic rods 713 themselves, at this time, when the disc 76 is forced to drive the corresponding spring telescopic rods 713 to rotate to the right, it can drive the corresponding limit frame 714 and the cylinder 715 and the arc plate 716 to move to the right together, so as to effectively increase the distance that the arc plate 716 is pushed to drive the corresponding push plate 711, connecting rod 712, rod body 78, and sealing plate 710 to move to the right (combined with Figure 11 and Figure 12 shown in the direction);

[0063] And as the moving distance of the left sealing plate 710 to the right gradually increases, the moving distance of its relative side, that is, the right sealing plate 710, driven by gas extrusion will also increase accordingly. When the moving distance of the right sealing plate 710 driving the corresponding rod body 78 to the right gradually increases (as Figure 10 shown in the direction), the extrusion force it applies to the right roller body 73 by squeezing the corresponding extrusion plate 79 will also increase accordingly. In this way, when the contact pressure between the left side of the rolling hub 6 and the slide rail 3 continues to increase (as Figure 5 shown in the direction), by adaptively increasing the extrusion force transmitted by the right roller body 73 to the right side of the rolling hub 6 and increasing the contact pressure between the right side of the rolling hub 6 and the slide rail 3, the effect of adaptively increasing the contact pressure and friction force between the right side of the rolling hub 6 and the slide rail 3 according to the magnitude of the increased contact pressure between the left side of the rolling hub 6 and the slide rail 3 can be achieved, which helps to further improve the balance of the contact pressure between the relative two sides of the rolling hub 6 and the slide rail 3 when the rolling hub 6 slides inside the slide rail 3.

[0064] Meanwhile, when the main body 1 of the tower crane stops shaking and the contact pressure between the left side inside the slide rail 3 and the left side of the rolling hub 6 returns to the initial state, that is, when the tangential frictional force between the rolling hub 6 and the left roller body 73 inside it gradually decreases, at this time, under the action of the self-elastic force of the left spring telescopic rod 713, it can drive the corresponding limit frame 714, cylinder 715 and arc plate 716 to move back to their original positions. At the same time, under the action of the self-elastic force of the first return spring installed between the two corresponding sealing plates 710 and the first limit groove 719, it can drive the two first sealing plates 710 to drive the corresponding rod body 78, extrusion plate 79 and push plate 711 to quickly move back to their original positions, so as to facilitate the subsequent automatic adjustment of the contact pressure between the left and right sides of the rolling hub 6 and the slide rail 3 by the cooperation of the two corresponding extrusion plates 79 and the sealing plate 710.

[0065] Meanwhile, as Figure 5 shown in the direction, if the contact pressure between the right inner wall of the slide rail 3 and the right side of the rolling hub 6 continues to increase, through the above operations, the contact pressure between the left side of the rolling hub 6 and the slide rail 3 can be adaptively increased to achieve the effect of balancing the contact pressure, that is, the frictional force, between the relative two sides of the rolling hub 6 and the slide rail 3.

[0066] Referring to Figure 4 , Figures 11 - 15 , the air regulating assembly 8 includes two air bags 81 respectively fixedly installed on the side edges of the rolling hub 6 (as Figure 13 shown in the direction, here the side edges of the rolling hub 6 refer to the left and right sides of the rolling hub 6, and air bags 81 are fixedly installed on both its left and right sides), and the right air bags 81 are all hermetically penetrated and slidably installed on the corresponding support shafts 5 (here the right side refers to Figure 13 , Figure 13 in which the position of the support shaft 5 marked in the attached drawing is the right side), and a pressure regulating mechanism is commonly installed between the support shafts 5 for regulating the air pressure of the air bags 81.

[0067] The pressure regulating mechanism includes second limit grooves 82 respectively opened on the support shafts 5, and the second limit grooves 82 are all communicated with the corresponding first limit grooves 719. Square openings 86 communicated with the corresponding second limit grooves 82 are opened on the support shafts 5. Two pistons 83 are hermetically slidably installed on the second limit grooves 82 (it is set that return springs two are fixedly installed between the pistons 83 and the corresponding second limit grooves 82, not shown in the figure), and a shielding component is commonly installed between the second limit grooves 82.

[0068] The shielding component includes two baffles 84 respectively fixedly installed on the second limit grooves 82, and an air pipe 85 is commonly fixedly communicated between the two corresponding baffles 84.

[0069] As Figure 13In the shown direction, through holes one (drawn but not labeled in the figure) are provided on the right sides of the left airbags 81, and through holes two (drawn but not labeled in the figure) are provided on the left sides of the rolling hubs 6. The through holes one communicate with the corresponding through holes two and the limiting grooves two 82, aiming to facilitate the mutual flow of gas between the left airbags 81 and the corresponding limiting grooves two 82.

[0070] Meanwhile, when set in the initial state, the interiors of the airbags 81 are all filled with gas. At this time, the airbags 81 are all in a state of being in contact with the inner sidewalls of the corresponding slide rails 3, and the frictional forces between the airbags 81 and the inner sidewalls of the corresponding slide rails 3 are all small. At the same time, the interiors of the limiting grooves two 82 (including the intermediate positions of the limiting grooves two 82 located between the corresponding two pistons 83) are also in a state of being filled with gas in the initial state.

[0071] As Figure 13 shown in the direction, if the tower crane main body 1 drives the slide rail 3 to sway to the right, at this time, the contact pressure between the left inner sidewall of the slide rail 3 and the left airbag 81 will increase accordingly, and the extrusion force exerted by the sidewall of the slide rail 3 on the left airbag 81 will squeeze the gas inside the left airbag 81 into the corresponding limiting groove two 82 through the cooperation of the corresponding through holes one and two. The thrust exerted by this part of the gas on the left piston 83 will drive the left piston 83 to move to the right. During the process of the left piston 83 moving to the right, by squeezing the gas between the left piston 83 and the corresponding right piston 83, the thrust exerted on the corresponding right piston 83 can push the right piston 83 to move to the right (as Figure 14 shown in the direction), and the gas on the right side of the limiting groove two 82 is squeezed into the right airbag 81 through the corresponding square opening 86, so as to increase the pressure and air pressure inside the right airbag 81, that is, increase the contact pressure between the right airbag 81 and the right sidewall of the slide rail 3, and achieve the effect of balancing the contact pressure and frictional force between the left and right sides of the rolling hub 6 and the corresponding slide rail 3, which helps to further improve the stability of the mobile device 2 during the up and down process.

[0072] On the contrary, as Figure 13 shown in the direction, if the tower crane main body 1 drives the slide rail 3 to sway to the left and the contact pressure between the right inner sidewall of the slide rail 3 and the right airbag 81 gradually increases, at this time, through the above operations, the effect of balancing the contact pressure between the two opposite airbags 81, that is, between the left and right sides of the rolling hub 6 and the slide rail 3, can be achieved by increasing the pressure and air pressure of the gas inside the left airbag 81 and increasing the contact pressure between the left airbag 81 and the corresponding slide rail 3.

[0073] Meanwhile, the purpose of adding two baffles 84 between the second limiting groove 82 and the corresponding first limiting groove 719 is to prevent the corresponding two sealing plates 710 from moving under force. When squeezing the gas in their moving direction, it can prevent the situation that this part of the gas is squeezed into the corresponding second limiting groove 82 and acts on the corresponding two pistons 83. Conversely, when the two pistons 83 move under force and squeeze the gas in their moving direction, at this time, through the cooperation of the two baffles 84, it can prevent the situation that the squeezed gas enters the corresponding first limiting groove 719 and acts on the corresponding two sealing plates 710.

[0074] Referring to Figures 11 - 18 , a speed regulating component 9 is jointly arranged between the support shafts 5. The speed regulating component 9 includes ventilation holes (drawn but not marked in the figure, visible from Figure 11 ), air valves 91 are installed on the ventilation holes, air ducts 92 are fixedly connected to the air valves 91, and the air ducts 92 are hermetically penetrated and fixedly installed on the corresponding support shafts 5, and one end of the air ducts 92 is hermetically penetrated and fixedly installed on the corresponding air delivery pipes 85, and a plurality of exhaust pipes 93 are fixedly connected to one end of the air ducts 92.

[0075] The air valve 91 usually has a movable valve core or valve flap inside. When the mobile device 2 is stationary or moving up and down slowly under force, at this time, the air pressure inside and outside the support shaft 5 is relatively balanced, and the air valve 91 is in a closed state. If due to factors such as a malfunction of the lifting device, the mobile device 2 moves up and down rapidly, that is, stalls, at this time, according to the principle of aerodynamics, the acceleration of the air flow velocity outside the support shaft 5, that is, outside the ventilation hole, will cause the air pressure outside the ventilation hole to decrease. Since the air pressure inside the ventilation hole still remains relatively high, a pressure difference is formed inside and outside the ventilation hole at this time. When the pressure difference is sufficient to overcome the resistance such as the gravity and spring force of the valve core or valve flap of the air valve 91, it can push the valve core or valve flap to move, so that the air valve 91 automatically opens, prompting the outside gas to enter the corresponding air duct 92.

[0076] When the mobile device 2 stalls and the air valve 91 automatically opens and the outside gas enters the corresponding air duct 92, at this time, this part of the gas will enter the corresponding plurality of exhaust pipes 93 along the pipe wall of the air duct 92 and is finally evenly ejected from the corresponding plurality of exhaust pipes 93. The driving force exerted by the gas evenly ejected from the corresponding plurality of exhaust pipes 93 on the corresponding two sealing plates 710 and the two pistons 83 can drive the corresponding two sealing plates 710 to drive the corresponding rod bodies 78 to move away from each other. The extrusion force exerted by the corresponding two rod bodies 78 on the corresponding roller body 73 by squeezing the corresponding extrusion plate 79 can help increase the friction force between the left rear side and the right front side of the rolling hub 6 and the corresponding slide rail 3 (as Figure 16 shown in the direction);

[0077] Meanwhile, the driving forces applied to the corresponding pistons 83 relative to the two exhaust pipes 93 can drive the two corresponding pistons 83 away from each other. As the two corresponding pistons 83 move relative to each other, the extrusion force exerted on the corresponding air bags 81 by the gas can help increase the frictional force between the two corresponding air bags 81 and the slide rail 3, that is, the frictional force between the lower left side and the upper right side of the rolling hub 6 and the slide rail 3 (as shown in the Figure 16 indicated direction). In this way, during the stalling lifting and lowering process of the mobile device 2, by increasing the frictional resistance between the periphery of the rolling hub 6 and the slide rail 3, the moving speed of the mobile device 2 can be slowed down to a certain extent, which helps reduce the probability of safety accidents or the severity of safety accidents.

[0078] Meanwhile, valve cores or valve flaps are provided at both the upper and lower ends of the air valve 91. The purpose is to facilitate automatic opening when the pressure difference formed inside and outside the ventilation holes reaches a certain level during the stalling upward and stalling downward processes of the mobile device 2. Through cooperation with the speed regulation component 9, the adjustment component 7, and the air regulation component 8, the moving speed of the mobile device 2 can be slowed down. Moreover, the specific working principle and internal component composition of the air valve 91 are existing mature technologies and will not be elaborated further here.

[0079] Meanwhile, pipes (not shown in the figure) are added to the air guide pipe 92, and electric valves are installed on the pipes. When the moving speed of the stalled mobile device 2 gradually slows down and the staff leaves the mobile device 2, multiple electric valves are activated. At this time, under the action of the self-elastic forces of the two corresponding return springs one and return springs two, the two corresponding sealing plates 710 can be driven to drive the corresponding pressing plates 79 to move back to their original positions, and the excess gas between the two is squeezed into the corresponding air guide pipe 92. Meanwhile, during the process of the two corresponding pistons 83 moving back under force, the excess gas between the two will also be squeezed into the corresponding air guide pipe 92, and the gas entering the interior of the air guide pipe 92 can finally be discharged along the corresponding pipes, so as to facilitate the subsequent automatic adjustment of the contact pressure between the periphery of the rolling hub 6 and the slide rail 3 by the device.

[0080] Further explanation, the above fixed connection should be understood in a broad sense unless otherwise clearly specified and limited. For example, it can be welding, gluing, or integrally formed setting, etc., which are common means well-known to those skilled in the art.

[0081] In the present invention, during the process of driving the mobile device 2 to drive the staff to move vertically on the tower crane main body 1 through the existing lifting device, the cooperation of the two slide rails 3 and the multiple rolling hubs 6 can help improve the stability of the mobile device 2 during the lifting and lowering process of driving the staff.

[0082] Such as Figure 5In the shown direction, if the tower crane main body 1 sways under the influence of factors such as wind force, it drives the slide rail 3 to sway to the right. The contact pressure between the left inner wall of the slide rail 3 and the left side of the rolling hub 6 continuously increases, and when the tangential friction force between the inner wall of the rolling hub 6 and the roller body 73 gradually increases (as Figure 5 shown in the direction), it can drive the left roller body 73 to drive the corresponding rotating shaft 72 to rotate. And when the centrifugal force generated by the rotation of the corresponding disc 76 driven by the left rotating shaft 72, through the cooperation of the pushing mechanism and the pressing mechanism, it can drive the right rod body 78 to move to the right (as Figure 12 shown in the direction). The extrusion force exerted on the corresponding pressing plate 79 by the rightward movement of the right rod body 78 can be transmitted to the right side of the rolling hub 6 through the right roller body 73, so as to achieve the effect of balancing the contact pressure and friction force between the left and right sides of the rolling hub 6 and the slide rail 3, which helps to improve the stability and safety during the lifting process of the mobile device 2 driving the staff.

[0083] At the same time, as Figure 13 shown in the direction, if the tower crane main body 1 sways under the influence of factors such as wind force, driving the slide rail 3 to sway to the right, when the contact pressure between the left airbag 81 and the slide rail 3 continuously increases, the slide rail 3 will squeeze the gas inside the left airbag 81 into the corresponding limiting groove two 82. At this time, through the cooperation with the pressure regulating mechanism, the air pressure and pressure inside the right airbag 81 can be increased, and the contact pressure between the right airbag 81 and the slide rail 3 can be increased, so as to achieve the effect of balancing the contact pressure between the left and right sides of the rolling hub 6 and the slide rail 3, which helps to further improve the stability and safety during the lifting process of the mobile device 2 driving the staff.

[0084] At the same time, if the mobile device 2 stalls during the forced lifting process, at this time, under the action of the air pressure difference inside and outside the ventilation hole, the air valve 91 can be automatically opened, so that the outside gas enters the air duct 92. At this time, through the cooperation of the air duct 92 and the corresponding multiple exhaust pipes 93, the gas ejected to the corresponding two sealing plates 710 and the piston 83 can drive the corresponding two sealing plates 710, rod body 78 and piston 83 to move away from each other, so as to increase the friction force between the periphery of the rolling hub 6 and the slide rail 3, that is, the frictional resistance during the lifting process of the mobile device 2, to achieve the effect of slowing down the moving speed of the mobile device 2 to a certain extent, which helps to reduce the probability of safety accidents caused by the stall of the mobile device 2 or the severity of safety accidents.

[0085] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A slide rail type mobile platform for a building tower crane, comprising a tower crane body (1), a mobile device (2), and a plurality of fixing members (4), wherein the fixing members (4) are all fixedly connected to the mobile device (2), two slide rails (3) are fixedly mounted on the side of the tower crane body (1), two support shafts (5) are fixedly mounted on the fixing members (4), rollers (6) are rotatably mounted on the support shafts (5), and the rollers (6) are slidably mounted in the corresponding slide rails (3), characterized in that: An adjustment component (7) is provided between the rollers (6) for balancing the friction between the two opposite sides of the rollers (6) and the corresponding slide rails (3); an air adjustment component (8) is provided between the rollers (6); The adjustment assembly (7) comprises support frames (71) respectively fixedly mounted on the support shafts (5), two rotating shafts (72) being rotatably mounted on the support frames (71), roller bodies (73) being fixedly mounted on the rotating shafts (72), a pushing mechanism being commonly mounted between the rotating shafts (72), and a squeezing mechanism being commonly mounted between the support shafts (5); The air regulating assembly (8) comprises two air bags (81) respectively fixedly mounted on the sides of the roller (6), and the right air bags (81) are sealed and penetrated and slidably mounted on the corresponding support shafts (5), and a pressure regulating mechanism is installed between the support shafts (5) for regulating the air pressure of the air bags (81); When the contact pressure between the slide rail (3) and the airbag (81) on one side increases, the contact pressure between the airbag (81) on the opposite side and the slide rail (3) is increased through the pressure regulating mechanism.

2. A slide rail type mobile platform for a building tower crane according to claim 1, characterized in that: The pushing mechanism comprises disks (76) respectively fixedly mounted on the rotating shafts (72), and the disks (76) are each provided with placement grooves (74) evenly distributed in an annular shape; A spring telescopic rod (713) is fixedly mounted on the placement groove (74), a limit frame (714) is fixedly mounted on one end of the spring telescopic rod (713), a cylinder (715) is slidably mounted on the limit frame (714), an arc plate (716) is fixedly mounted on one side of the cylinder (715), a limit disk (75) matching the corresponding arc plate (716) is rotatably mounted on the rotating shaft (72), and a limit component is installed between the disks (76).

3. A slide rail type mobile platform for a building tower crane according to claim 2, characterized in that: The limiting component comprises a plurality of slide grooves (717) respectively formed on the disc (76), and the slide grooves (717) are all connected to the corresponding placement grooves (74), and a sliding block (718) is slidably mounted on the slide grooves (717), and the sliding block (718) is fixedly connected to the corresponding limiting frame (714).

4. The slide rail type mobile platform for a building tower crane according to claim 2, characterized in that: The extrusion mechanism comprises two limit members (77) respectively fixedly mounted on the support shaft (5); a rod body (78) is passed through and slidably mounted on each of the limit members (77); a connecting rod (712) is fixedly mounted on each of the rod bodies (78); a push plate (711) matched with a corresponding arc-shaped plate (716) is fixedly mounted on each of the connecting rods (712); and a pressing component is commonly mounted between the connecting rods (712).

5. The slide rail type mobile platform for a building tower crane according to claim 4, characterized in that: The pressing components include extrusion plates (79) respectively fixedly mounted on one end of the rod body (78), the support shaft (5) is provided with a limiting groove (719), the other end of the rod body (78) is fixedly mounted with a sealing plate (710), and the sealing plate (710) is sealingly slidably mounted on the corresponding limiting groove (719).

6. The slide rail type mobile platform for a building tower crane according to claim 1, characterized in that: The pressure regulating mechanism comprises two limiting grooves (82) respectively formed on the support shaft (5), and the two limiting grooves (82) are connected to the corresponding one limiting grooves (719); the support shaft (5) is provided with a square opening (86) connected to the corresponding one limiting grooves (82); two pistons (83) are sealingly and slidably mounted on the two limiting grooves (82); and a shielding component is installed between the two limiting grooves (82).

7. A slide rail type mobile platform for a building tower crane according to claim 6, characterized in that: The shielding component comprises two baffles (84) respectively fixedly mounted on the second limiting groove (82), and an air delivery pipe (85) is fixedly connected between the two corresponding baffles (84).

8. The slide rail type mobile platform for a building tower crane according to claim 7, characterized in that: A speed regulating assembly (9) is commonly provided between the support shafts (5), the speed regulating assembly (9) comprising ventilation holes respectively provided on the support shafts (5), the ventilation holes each being provided with an air valve (91), the air valve (91) each being fixedly connected to an air guide pipe (92), the air guide pipe (92) being sealed and passing through and fixedly installed on the corresponding support shaft (5), one end of the air guide pipe (92) being sealed and passing through and fixedly installed on the corresponding air delivery pipe (85), and one end of the air guide pipe (92) being fixedly connected to a plurality of exhaust pipes (93).

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