A wind-resistant tower crane

Abstract

The present invention belongs to the field of tower cranes, and in particular relates to a wind-resistant tower crane, comprising a tower crane and a reinforcement mechanism, wherein the tower crane body is connected to a fixed wall on a building perpendicular to the wall surface via a plurality of reinforcement mechanisms evenly spaced vertically. In the present invention, the uppermost end of the tower crane is tilted toward the building as a whole in an inclined state under the action of strong winds. The tilted tower crane overcomes part of the wind force while effectively reducing the swing amplitude of the tower crane under the action of strong winds, so that the tower crane exerts less force on the fixed wall of the building under the action of strong winds, thereby effectively protecting the building. The tower crane has strong wind resistance under the action of all reinforcement mechanisms without damaging the fixed wall of the building.

Description

Technical Field

[0001] The invention belongs to the field of tower cranes, and in particular relates to a wind-resistant tower crane. Background Art

[0002] Tower cranes are the most commonly used type of lifting equipment on construction sites. Also known as tower cranes, they are connected in sections and used to lift materials such as steel bars, wood planks, concrete, and steel pipes. Tower cranes are an essential piece of equipment on construction sites.

[0003] Wall-mounted tower cranes typically have several fixed structures installed at equal intervals from bottom to top. One end of the fixed structure is connected to the crane, and the other end is attached to the building wall. To increase the mounting strength of the fixed structure, it is bolted to the wall, making the tower crane more wind-resistant.

[0004] In extremely strong winds, tower cranes can sway from side to side. The force generated by the swaying crane first acts on the uppermost wall. If the uppermost fixed structure detaches from the wall, the swaying crane will pull all the fixed structures down from top to bottom, eventually causing the crane to topple over completely, resulting in damage or casualties.

[0005] The present invention designs a tower crane with further wind resistance while maintaining the same wall strength to solve the above problems. Summary of the Invention

[0006] In order to solve the above-mentioned defects in the prior art, the present invention discloses a wind-resistant tower crane, which is realized by adopting the following technical solutions.

[0007] A wind-resistant tower crane comprises a tower crane and a reinforcement mechanism, wherein the tower crane body is connected to a fixed wall on a building body perpendicular to the wall surface through a plurality of reinforcement mechanisms evenly spaced in the vertical direction;

[0008] The reinforcing mechanism includes a square frame, a push rod, a piston, a cylinder, a limit mechanism, an oil pipe, and a resistance valve, wherein the square frame is nested and installed in the tower body of the tower crane, and two push rods are symmetrically hinged on both sides of the square frame, and a cylinder is nested and slidingly sealed on the two push rods, and the end of the cylinder is hinged with a fixed plate connected to the fixed wall by bolts; the piston at the end of each push rod slides in the corresponding cylinder, and the cylinder space on both sides of the piston is filled with hydraulic oil. A spring A is installed on the side of the cylinder close to the square frame to hinder the movement of the piston toward the box; the wall of each cylinder is provided with a limit mechanism to prevent the piston from resetting after the corresponding piston penetrates a certain range.

[0009] In the two adjacent reinforcement mechanisms, the sides of the two cylinders close to the building are connected to the sides of the corresponding cylinders in the adjacent reinforcement mechanism below close to the frame through oil pipes, and a resistance valve is installed on the oil pipe that creates resistance to the movement of hydraulic oil from the upper cylinder to the lower cylinder but does not create resistance to the movement of hydraulic oil from the lower cylinder to the upper cylinder.

[0010] The resistance valve includes a valve body, a slider, a spring C, and a baffle, wherein the valve body is provided with an oil chamber and an oil channel connected to the oil chamber; the oil hole C on the side wall of the oil chamber is connected to the oil hole B of the oil cylinder in the reinforcement mechanism located above through an oil pipe, and the oil hole D on the side wall of the oil channel is connected to the oil hole A of the oil cylinder in the reinforcement mechanism located below through an oil pipe; elastic baffles are sliding in the two slide grooves A at the top and bottom of the oil channel, each baffle is connected to a slider, the slider slides in the slide groove B of the valve body, and a spring C for resetting the corresponding slider is installed in the circular groove on the wall of each slide groove B; the side wall of the slide groove A and the slider close to the oil hole D is a rough surface, and the side wall of the slide groove A and the slider close to the oil hole C is a smooth surface.

[0011] As a further improvement of this technology, two round pins A are symmetrically installed on both sides of the square frame, and a rotating sleeve A connected to the corresponding side push rod is nested and rotatable on the two round pins A; the ends of the cylinders are rotatably matched with the rotating sleeves B on the corresponding fixed plates.

[0012] As a further improvement of the present technology, a sliding sleeve is nested and slidably mounted on the push rod, and the sliding sleeve is connected to the inner end of the oil cylinder through a spring A and is connected to the inner end of the oil cylinder through two steel wires.

[0013] As a further improvement of this technology, the oil hole B of the oil cylinder in the upper reinforcement mechanism close to the building side is connected to the oil hole A of the oil cylinder in the lower reinforcement mechanism close to the frame side through an oil pipe equipped with a resistance valve.

[0014] As a further improvement of this technology, the limiting mechanism includes a guide sleeve, a limiting rod, and a spring B, wherein a limiting rod that cooperates with the corresponding piston is provided in the guide sleeve on the wall of the cylinder, and a spring B is installed to reset the limiting rod; the inner end of the limiting rod has an inclined surface that does not hinder the movement of the corresponding piston toward the direction of the building.

[0015] As a further improvement of the present technology, the outer end of the limit rod is provided with a manual pull ring.

[0016] As a further improvement of the present technology, the spring B is a compression spring.

[0017] As a further improvement of the present technology, the fixing plate is connected to the fixed wall on the building through bolts, or the fixing plate is connected to the bracket through bolts, and the bracket is connected to the fixed wall on the building through bolts.

[0018] As a further improvement of the present technology, the initial state of the end of the baffle is an arc bend toward the oil hole C.

[0019] As a further improvement of the present technology, a bending groove is provided on the outer arc surface at the junction of the curved portion and the straight portion of the baffle to facilitate the baffle to bend back and reset.

[0020] Compared to conventional tower cranes, when the tower crane of the present invention swings slightly toward the building at its top end, the two push rods in the topmost reinforcement mechanism push the corresponding pistons to overcome the corresponding resistance valves and penetrate deeper into the corresponding cylinders, pushing the hydraulic oil on the building side of the cylinders into the space on the crane side of the cylinders of the second reinforcement mechanism. The hydraulic oil on the crane side of the cylinders of the second reinforcement mechanism pushes the corresponding pistons to penetrate deeper into the corresponding cylinders to a certain extent and presses the hydraulic oil on the building side of the cylinders into the space on the crane side of the cylinders of the next reinforcement mechanism, overcoming the corresponding resistance valves. Since the cross-sectional area of ​​the cylinders in each reinforcement mechanism is smaller than the cross-sectional area of ​​the cylinders in the next reinforcement mechanism, the extent to which the push rods in all reinforcement mechanisms penetrate into the corresponding cylinders decreases from top to bottom, causing the tower crane to swing toward the building in an overall slightly tilted state. This effectively buffers the force generated by the small swing of the tower crane toward the building without damaging the fixed walls of the building. Similarly, when the tower crane of the present invention swings slightly at its top end away from the building, the two top rods in the top reinforcement mechanism pull the corresponding pistons to compress the corresponding springs A to move away from the building, causing the hydraulic oil on the crane side of the cylinder in the next reinforcement mechanism to enter the building side of the cylinder in the upper reinforcement mechanism through the corresponding resistance valve. At this time, the resistance valve has no resistance, and the space on the crane side of the cylinder in the second reinforcement mechanism is smaller, pulling the corresponding pistons to compress the corresponding springs A to move toward the crane side by a certain amplitude, thereby sucking the hydraulic oil on the crane side of the cylinder in the next reinforcement mechanism. Since the cross-sectional area of ​​the cylinder in each reinforcement mechanism is smaller than the cross-sectional area of ​​the cylinder in the next reinforcement mechanism, the amplitude of the movement of the top rods in all reinforcement mechanisms toward the tower crane decreases from top to bottom, causing the tower crane to swing away from the building in an overall slightly tilted state, thereby effectively buffering the force generated by the small swing of the tower crane away from the building without causing damage to the fixed wall of the building.

[0021] When the upper end of the tower crane in the present invention swings toward the building with a large amplitude under the action of strong wind, the corresponding piston passes through the corresponding limit mechanism and is prevented from swinging back to its original position by the limit mechanism, so that the hydraulic oil on the building side in the oil cylinder of the upper reinforcement mechanism overcomes the corresponding resistance valve and enters the space on one side of the tower crane in the oil cylinder of the adjacent reinforcement mechanism below and pushes the piston in the reinforcement mechanism below to pass the corresponding limit mechanism and be prevented from swinging back to its original position by the limit mechanism. Since the cross-sectional area of ​​the oil cylinder in each reinforcement mechanism is smaller than the cross-sectional area of ​​the oil cylinder in the next reinforcement mechanism, the amplitude of the movement of the top rods in all reinforcement mechanisms toward the tower crane decreases from top to bottom, so that the tower crane is inclined toward the building as a whole in an inclined state. The tower crane that maintains the inclination overcomes part of the wind force in its inclination state and effectively reduces the swing amplitude of the tower crane under the action of strong wind, so that the force exerted by the tower crane on the fixed wall of the building under the action of strong wind is small, thereby effectively protecting the building, so that the tower crane has strong wind resistance under the action of all reinforcement mechanisms without causing damage to the fixed wall of the building.

[0022] The invention has a simple structure and good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the cooperation between the present invention, the tower crane body and the fixed wall on the building body.

[0024] Figure 2 It is a schematic diagram of the strengthening mechanism.

[0025] Figure 3 It is a top-down cross-sectional diagram of the coordination between the reinforcement mechanism, the tower crane body and the fixed wall on the building.

[0026] Figure 4 It is a side view cross-sectional diagram of the tower crane body and the fixed wall on the building.

[0027] Figure 5 It is a cross-sectional schematic diagram of the cooperation of two adjacent reinforcing mechanisms in the present invention.

[0028] Figure 6 It is a cross-sectional diagram of the limiting mechanism.

[0029] Figure 7 It is a cross-sectional schematic diagram of the resistance valve from two perspectives.

[0030] Figure 8 It is a schematic cross-sectional diagram of the two baffle structures of the resistance valve clock.

[0031] Figure 9 It is a schematic diagram of the valve body cross section.

[0032] Figure 10 It is a schematic diagram of the cross-section of the structure inside the oil cylinder in the reinforcement mechanism.

[0033] Names in the figure: 1. Building; 2. Fixed wall; 3. Tower crane; 4. Tower body; 5. Strengthening mechanism; 6. Frame; 7. Round pin A; 8. Rotating sleeve A; 9. Push rod; 10. Piston; 11. Cylinder; 12. Oil hole A; 13. Oil hole B; 14. Sliding sleeve; 15. Spring A; 16. Steel wire; 17. Limiting mechanism; 18. Guide sleeve; 19. Limiting rod; 20. Inclined surface; 21. Pull Ring; 22. Spring B; 23. Round pin B; 24. Swivel B; 25. Fixed plate; 26. Bracket; 27. Bolt; 28. Oil pipe; 29. ​​Resistance valve; 30. Valve body; 32. Oil chamber; 33. Oil hole C; 34. Oil channel; 35. Slide A; 36. Slide B; 37. Round groove; 38. Oil hole D; 39. Slider; 40. Spring C; 41. Baffle; 42. Bending groove. DETAILED DESCRIPTION

[0034] The accompanying drawings are schematic diagrams of the present invention to facilitate understanding of the structural operation principle. The specific product structure and proportional dimensions can be determined according to the use environment and conventional technology.

[0035] like Figure 1 As shown, it includes a tower crane 3 and a reinforcement mechanism 5, wherein Figure 3 、 4 As shown in Figures 5 and 6, the tower body 4 of the tower crane 3 is connected to a fixed wall on the building that is perpendicular to the wall surface through a number of reinforcement mechanisms that are evenly spaced in the vertical direction.

[0036] like Figure 2 、 3 As shown, the strengthening mechanism 5 includes a frame 6, a push rod 9, a piston 10, a cylinder 11, a limit mechanism 17, an oil pipe 28, and a resistance valve 29, wherein Figure 2 、 3 As shown in Figures 5 and 6, a frame 6 is nested and mounted within the tower body 4 of the tower crane 3. Two push rods 9 are symmetrically hinged on either side of the frame 6. Cylinders 11 are nested and sealed and sliding on each push rod 9. A fixed plate is hingedly connected to the fixed wall via bolts at the end of the cylinder. A piston 10 at the end of each push rod 9 slides within the corresponding cylinder 11. The spaces in the cylinders 11 on either side of the piston 10 are filled with hydraulic oil. A spring A15 is installed on the side of the cylinder closest to the frame to prevent the piston from moving toward the frame. A limit mechanism 17 is installed on the wall of each cylinder 11 to prevent the corresponding piston 10 from returning to its original position after it has penetrated a certain depth. From top to bottom, the limit mechanisms move increasingly closer to the tower crane.

[0037] like Figure 7 As shown, the resistance valve 29 includes a valve body 30, a slider 39, a spring C40, and a baffle 41. Figure 7 、 8As shown in Figures 9 and 9, the valve body 30 has an oil chamber 32 and an oil passage 34 connected to the oil chamber 32; the oil hole C33 on the side wall of the oil chamber 32 is connected to the oil hole B13 of the oil cylinder 11 in the reinforcement mechanism 5 located above through the oil pipe 28, and the oil hole D38 on the side wall of the oil passage 34 is connected to the oil hole A12 of the oil cylinder 11 in the reinforcement mechanism 5 located below through the oil pipe 28; elastic baffles 41 are sliding in the two slide grooves A35 at the top and bottom of the oil passage 34, and each baffle 41 is connected to a slider 39, which slides in the slide groove B36 of the valve body 30. The width of the slide groove is slightly larger than that of the slider, and the gap is less than 1 mm. A spring C40 for resetting the corresponding slider 39 is installed in the circular groove 37 on the wall of each slide groove B36; the side wall of the slide groove A and the slider near the oil hole D is a rough surface, and the side wall of the slide groove A and the slider near the oil hole C is a smooth surface.

[0038] like Figure 1 、 4 As shown in Figures 5 and 6, in two adjacent reinforcing mechanisms 5, the sides of the two oil cylinders 11 close to the building 1 are connected to the sides of the corresponding oil cylinders 11 in the lower adjacent reinforcing mechanism 5 close to the box 6 through oil pipes 28, and the oil pipes 28 are equipped with resistance valves 29 that form resistance to the movement of hydraulic oil from the upper oil cylinder 11 to the lower oil cylinder 11 but do not form resistance to the movement of hydraulic oil from the lower oil cylinder 11 to the upper oil cylinder 11.

[0039] like Figure 2 、 3 As shown, two round pins A7 are symmetrically installed on both sides of the square frame 6, and a rotating sleeve A8 connected to the corresponding side push rod 9 is nested and rotatable on the two round pins A7; the ends of the cylinders 11 are rotatably matched with the rotating sleeves B24 on the corresponding fixed plates 25.

[0040] like Figure 3 、 5 As shown in FIG. 10 , a sliding sleeve 14 is nested and slidably mounted on the push rod 9 . The sliding sleeve 14 is connected to the inner end of the oil cylinder 11 through a spring A15 and the sliding sleeve 14 is connected to the inner end of the oil cylinder 11 through two steel wires 16 .

[0041] like Figure 2 、 5 As shown, the oil hole B13 of the oil cylinder 11 in the upper reinforcement mechanism 5 close to the building 1 is connected to the oil hole A12 of the oil cylinder 11 in the lower reinforcement mechanism 5 close to the frame 6 through the oil pipe 28 equipped with a resistance valve 29.

[0042] like Figure 5 、 6 As shown, a limit rod 19 cooperating with the corresponding piston 10 is provided in the guide sleeve 18 on the wall of the oil cylinder 11 and a spring B22 is installed to reset the limit rod 19; the inner end of the limit rod 19 has an inclined surface 20 that does not block the movement of the corresponding piston 10 toward the building 1.

[0043] like Figure 6 As shown, the outer end of the limiting rod 19 is provided with a manual pull ring 21 .

[0044] like Figure 2 、 3 As shown in , 5 , the fixing plate 25 is connected to the fixing wall 2 on the building body 1 through bolts 27 , or the fixing plate 25 is connected to the bracket 26 through bolts 27 , and the bracket 26 is connected to the fixing wall 2 on the building body 1 through bolts 27 .

[0045] like Figure 5 、 7 As shown in FIG. 8 , the initial state of the end of the baffle 41 is an arc bend toward the oil hole C33 .

[0046] like Figure 8 As shown, the outer arc surface at the junction of the curved portion and the straight portion of the baffle 41 is provided with a bending groove 42 for facilitating the baffle 41 to bend back and return to its original position.

[0047] The workflow of the present invention is as follows: In the initial state, Figure 5 、 7 As shown, the distance between the two sliders 39 in the resistance valve 29 is minimal. The two baffles 41 in the resistance valve 29 are closed to the corresponding oil passages 34. The ends of the two baffles 41 are curved toward the oil hole C33. The two springs C40 in the resistance valve 29 are compressed. The inclined surface 20 end of the limit rod 19 of the limit mechanism 17 in the reinforcement mechanism 5 is located within the oil cylinder 11, and the spring B22 is compressed. The sliding sleeve 14 in each oil cylinder 11 in the reinforcement mechanism 5 is in contact with the corresponding piston 10, and the two steel wires 16 of the sliding sleeve 14 are stretched straight. The spring A15 is compressed. There is no hydraulic oil in the space on the side of the frame 6 of the oil cylinder 11 in the uppermost reinforcement mechanism 5, and there is no hydraulic oil in the space on the side of the building 1 of the oil cylinder 11 in the lowermost reinforcement mechanism 5.

[0048] When the wind blows, the boom of the tower crane 3 is swung to a state parallel to the wall of the building 1, so that the wind force acting on the tower crane 3 in the horizontal direction parallel to the wall of the building 1 is minimized and the wind force acting on the tower crane 3 is concentrated in the horizontal direction perpendicular to the wall of the building 1, so that the tower crane 3 as a whole only swings in the direction perpendicular to the wall of the building 1 under the action of light wind, moderate wind or strong wind, and all the reinforcing mechanisms 5 play a limiting and buffering role on the swing of the tower crane 3.

[0049] The uppermost end of the tower crane 3 cannot overcome the resistance of the corresponding resistance valve 29 under light wind conditions and will not swing, thereby keeping the tower body 4 of the tower crane 3 from swinging as a whole under light wind conditions.

[0050] When the upper end of the tower crane 3 swings slightly toward the building 1 under a stroke, the two push rods 9 in the uppermost reinforcing mechanism 5 will push the corresponding piston 10 to overcome the corresponding resistance valve 29 and penetrate into the corresponding cylinder 11 and push the hydraulic oil on the building 1 side in the cylinder 11 into the space on the tower crane 3 in the cylinder 11 of the second reinforcing mechanism 5. The hydraulic oil on the tower crane 3 side in the cylinder 11 of the second reinforcing mechanism 5 pushes the corresponding piston 10 to penetrate into the corresponding cylinder 11 by a certain amplitude and presses the hydraulic oil on the building 1 side in the cylinder 11 into the space on the tower crane 3 in the cylinder 11 of the next reinforcing mechanism 5, overcomes the corresponding resistance valve 29, and draws air into the space on the tower crane side of the cylinder in the uppermost reinforcing mechanism through the corresponding oil hole A, while the air is discharged from the space on the building side of the cylinder in the lowermost reinforcing mechanism through the corresponding oil hole B. Since each limiting mechanism is also getting closer to the tower crane direction from top to bottom and the cross-sectional area of ​​the oil cylinder 11 in the reinforcing mechanism 5 is smaller than the cross-sectional area of ​​the oil cylinder 11 in the next reinforcing mechanism 5, the extent to which the top rods 9 in all the reinforcing mechanisms 5 penetrate into the corresponding oil cylinder 11 decreases from top to bottom, causing the tower crane 3 to swing toward the building 1 in a state of overall slight inclination, thereby effectively buffering the force generated by the slight swing of the tower crane 3 toward the building 1 without causing damage to the fixed wall 2 of the building 1. Similarly, when the tower crane 3 in the present invention swings slightly at its upper end in the direction away from the building 1, the two top rods 9 in the uppermost reinforcing mechanism 5 will pull the corresponding piston 10 to compress the corresponding spring A15 to move away from the building 1, so that the hydraulic oil on the tower crane 3 side in the oil cylinder 11 in the next reinforcing mechanism 5 enters the building 1 side of the oil cylinder 11 in the upper reinforcing mechanism 5 through the corresponding resistance valve 29. At this time, the resistance valve 29 has no resistance, and the space on the tower crane 3 side in the oil cylinder 11 of the second reinforcing mechanism 5 is smaller and pulls the corresponding piston 10 to compress the corresponding spring A15 to move toward the tower crane 3 side by a certain amplitude, thereby sucking in the hydraulic oil on the tower crane 3 side in the oil cylinder 11 in the next reinforcing mechanism 5, and the air is discharged from the tower crane side space of the oil cylinder in the uppermost reinforcing mechanism through the corresponding oil hole A, while the air is sucked in from the building side space of the oil cylinder in the lowermost reinforcing mechanism through the corresponding oil hole B. Since the cross-sectional area of ​​the oil cylinder 11 in each reinforcing mechanism 5 is smaller than the cross-sectional area of ​​the oil cylinder 11 in the next reinforcing mechanism 5, the amplitude of movement of the top rods 9 in all the reinforcing mechanisms 5 toward the tower crane 3 decreases from top to bottom, causing the tower crane 3 to swing away from the building 1 in a state of overall slight inclination, thereby effectively buffering the force generated by the slight swing of the tower crane 3 away from the building 1 without causing damage to the fixed wall 2 of the building 1.

[0051] When the upper end of the tower crane 3 swings significantly toward the building 1 under the action of strong wind, the corresponding piston 10 passes over the corresponding limit mechanism 17 and is prevented from swinging back to its original position by the limit mechanism 17. As a result, the hydraulic oil on the building 1 side of the cylinder 11 in the upper reinforcement mechanism 5 overcomes the corresponding resistance valve 29 and enters the space on the side of the tower crane 3 in the cylinder 11 in the adjacent reinforcement mechanism 5 below, pushing the piston 10 in the lower reinforcement mechanism 5 to pass over the corresponding limit mechanism 17 and be prevented from swinging back to its original position by the limit mechanism 17. Since the cross-sectional area of ​​the cylinder 11 in each reinforcement mechanism 5 is smaller than that of the next reinforcement mechanism, the hydraulic oil on the building 1 side of the cylinder 11 in the upper reinforcement mechanism 5 overcomes the corresponding resistance valve 29 and enters the space on the side of the tower crane 3 in the cylinder 11 in the adjacent reinforcement mechanism 5 below, pushing the piston 10 in the lower reinforcement mechanism 5 to pass over the corresponding limit mechanism 17 and be prevented from swinging back to its original position by the limit mechanism 17. 5, the cross-sectional area of ​​the oil cylinder 11 is small, so the amplitude of movement of the top rods 9 in all the reinforcing mechanisms 5 toward the tower crane 3 decreases from top to bottom, so that the tower crane 3 is inclined to the building 1 as a whole in an inclined state. The inclined tower crane 3 overcomes part of the wind force in its inclined state and effectively reduces the swing amplitude of the tower crane 3 under the action of strong wind, so that the force exerted by the tower crane 3 on the fixed wall 2 of the building 1 under the action of strong wind is small, thereby effectively protecting the building 1. The tower crane 3 has strong wind resistance under the action of all the reinforcing mechanisms 5 without damaging the fixed wall 2 of the building 1.

[0052] When the strong wind ends, the limiting rod 19 in each reinforcement mechanism 5 is pulled simultaneously to contact the limiting rod 19 in the reinforcement mechanism 5 to limit the corresponding piston 10. The pistons 10 and push rods 9 in all reinforcement mechanisms 5 are reset in the corresponding cylinders 11 under the swing-back reset action of the tower crane 3. After the pistons 10 and push rods 9 in all reinforcement mechanisms 5 are reset, the force on the limiting rod 19 is removed, and the limiting rod 19 is reset under the action of spring B22.

[0053] The working principle of the resistance valve 29 is as follows:

[0054] First, in a light wind condition, the resistance valve 29 has a certain damping effect on the expansion and contraction of the reinforcing mechanism 5 under the action of the two arc-bent baffles 41 and the two springs B.

[0055] In light wind conditions, when the upper end of the tower body 4 is about to swing toward the side of the building body 1 under the action of the wind, the two top rods 9 in the uppermost reinforcing mechanism 5 are about to drive the corresponding pistons 10 to move toward the side of the building body 1 and to press the hydraulic oil in the space on the side of the building body 1 in the oil cylinder 11 through the oil pipe 28 and the corresponding resistance valve 29 into the space on the side of the tower body 4 in the oil cylinder 11 of the adjacent reinforcing mechanism 5 below. However, at this time, due to the weak wind force on the upper end of the tower body 4, the pressure exerted by the two pistons 10 in the uppermost reinforcing mechanism 5 on the hydraulic oil in the oil cylinder 11 is weak. The hydraulic oil in the oil cylinder 11 of the uppermost reinforcement mechanism 5 passes through the two curved baffles 41 in the resistance valve 29, pressing the rough surfaces of the two sliders 39 in the resistance valve 29 against the rough surfaces of the corresponding chute A. This prevents the two sliders 39 from moving due to friction and the action of the spring C40, and keeps the two baffles 41 closed to the oil passage 34 in the resistance valve 29. This prevents the hydraulic oil from transferring between the entire reinforcement mechanism 5, preventing the entire reinforcement mechanism 5 from contracting and locking it. This prevents the tower body 4 of the tower crane 3 from swinging toward the building in light winds.

[0056] In the case of light wind, when the upper end of the tower body 4 wants to swing away from the building body 1 under the action of wind, the two top rods 9 in the uppermost reinforcing mechanism 5 want to drive the corresponding two pistons 10 to move away from the building body 1 and want to suck the hydraulic oil in the space on the side of the tower body 4 in the oil cylinder 11 in the lower adjacent reinforcing mechanism 5 through the oil pipe 28 and the corresponding resistance valve 29 into the space on the side of the building body 1 of the oil cylinder 11 in the uppermost reinforcing mechanism 5. At this time, due to the weak wind force on the upper end of the tower body 4, the negative pressure generated by the two pistons 10 in the uppermost reinforcing mechanism 5 on the hydraulic oil in the oil cylinder 11 is weak, and the oil cylinder 11 in the lower reinforcing mechanism 5 adjacent to the uppermost reinforcing mechanism 5 is weak. The hydraulic oil in 1 passes through the two curved baffles 41 in the resistance valve 29 to make the smooth surfaces of the two sliders 39 in the resistance valve 29 tightly adhere to the smooth surfaces of the corresponding slide grooves A. At this time, there is a gap on the rough surface side and no resistance is generated, so that the two sliders 39 in the resistance valve 29 do not move under the action of the spring C40 and the two baffles 41 are kept in a closed state to the oil channel 34 in the resistance valve 29, thereby preventing the hydraulic oil in all the reinforcing mechanisms 5 from being transferred to each other and preventing all the reinforcing mechanisms 5 from being extended and being in a locked state, thereby preventing the tower body 4 of the tower crane 3 from swinging away from the building as a whole under the action of light wind.

[0057] Second, in the case of a stroke, the tower body 4 is subjected to a relatively large wind force, and the uppermost end of the tower body 4 will swing under the action of the wind, overcoming the resistance of the corresponding resistance valve 29 .

[0058] When the tower body 3 swings toward the side of the building body 1 under the action of moderate wind force, the two pistons 10 in the upper reinforcing mechanism 5 move the hydraulic oil in the space on the side of the oil cylinder 11 of the building body 1 to the space on the side of the tower body 4 in the oil cylinder 11 of the lower reinforcing mechanism 5. The tower body 4 is affected by the two push rods 9 in the upper reinforcing mechanism 5, which drive the corresponding two pistons 10 to move toward the building body 1 to a certain extent without crossing the corresponding limit mechanism 17. The hydraulic oil enters the oil chamber 32 through the oil hole C33 on the side of the valve body 30 of the corresponding resistance valve 29 through the space on the side of the building body of the oil cylinder 11 in the upper reinforcing mechanism 5. The pressure of the hydraulic oil entering the oil chamber 32 is reduced due to the sudden increase in the flow area of ​​the oil chamber 32, and the swing of the tower body 4 part corresponding to the upper reinforcing mechanism 5 is buffered. The hydraulic oil entering the oil chamber 32 of the resistance valve 29 flows into the oil channel 34 and causes the curved parts of the two baffles 41 to bend in the opposite direction. During the reverse arc bending process of the two baffles 41, the two baffles 41 in the resistance valve 29 make the rough surfaces of the two sliders tightly adhere to the rough surface of the slide groove A under the action of hydraulic oil and generate a large friction force. The two baffles 41 generate reverse arc bending under the action of hydraulic oil pressure and overcome the friction force and the elastic force of the spring C to drive the corresponding slider 39 to slide to the limit and compress the spring C40. When the curved portions of the two baffles 41 become straight plates, the two sliders 39 slide to their limits. The two baffles 41 forming the straight plates produce a certain degree of reverse curvature under the continued pressure of the hydraulic oil and open the oil passage 34 to a certain extent. The opening extent of the oil passage 34 by the two baffles 41 is proportional to the magnitude of the wind force on the tower body. The hydraulic oil in the opened oil passage 34 enters the space on one side of the tower body 4 of the cylinder 11 in the lower reinforcing mechanism 5 through the oil hole D38 and the oil pipe 28 and pushes the piston 10 in the lower reinforcing mechanism 5 to move a certain extent toward the side of the building body 1. Because the cross-sectional area of ​​the cylinder 11 in the upper reinforcing mechanism 5 is smaller than the cross-sectional area of ​​the cylinder 11 in the lower adjacent reinforcing mechanism 5, the hydraulic oil entering the lower adjacent reinforcing mechanism 5 from the upper reinforcing mechanism 5 pushes the lower piston 10 to move to a smaller extent than the upper piston 10, and ultimately makes the distance that the push rods 9 in all the reinforcing mechanisms 5 retract relative to the corresponding cylinder 11 decrease from top to bottom and the expansion and contraction ratios of any two adjacent reinforcing mechanisms are equal.

[0059] When the tower body 4 swings away from the building body 1 under the action of moderate wind, the two pistons 10 in the upper reinforcing mechanism 5 move a certain amplitude away from the building body 1 under the pull of the tower body 3 and generate negative pressure in the space on the side of the building body 1 of the cylinder 11. The hydraulic oil in the space on the side of the building body 1 of the cylinder 11 in the lower reinforcing mechanism 5 moves toward the space on the side of the building body 1 of the cylinder 11 in the upper reinforcing mechanism 5 under the action of the negative pressure generated in the cylinder 11 of the upper reinforcing mechanism 5. The hydraulic oil enters the oil channel 34 through the oil hole D38 of the corresponding resistance valve 29 through the space on the side of the tower body 4 of the cylinder 11 in the lower reinforcing mechanism 5. The pressure of the hydraulic oil entering the oil channel 34 restores the previous reverse arc of the two baffles 41 to its original state. During the bending and restoration process of the two baffles 41, the bending grooves 42 on the baffles 41 make it easier for the baffles to bend and reset, with less resistance. The two baffles 41 in the resistance valve 29, under the push of hydraulic oil, make the smooth surfaces of the two sliders 39 tightly adhere to the smooth surface of the slide groove A. The two baffles 41 perform arc restoration under the action of hydraulic oil pressure and overcome the elastic force of the spring C to drive the two sliders 39 to slide to the limit and compress the spring C40, reducing the elongation resistance of the reinforcing mechanism 5 during the swinging process of the tower body 4 away from the building body 1, reducing the pulling force of the tower body 4 on the building body during the swinging process away from the building body 1, and protecting the building body 1 from damage. When the curved portions of the two baffles 41 become straight during the restoration process, the two sliders 39 slide to their limits. The two baffles 41 that form straight plates bend further than their initial state under the continued pressure of the hydraulic oil and open the oil passage 34 to a certain extent. The bending grooves 42 on the two baffles 41 make it easier for the baffles to reset the curved portion. The opening extent of the oil passage 34 by the two baffles 41 is proportional to the wind force on the tower body. The hydraulic oil in the opened oil passage 34 enters the oil cylinder 11 in the upper reinforcement mechanism 5 through the oil hole C33 and the oil pipe 28. In the space on one side of the tower body 4, the two pistons 10 in the lower reinforcing mechanism 5 move toward the side of the tower body 4 by a certain amplitude. Since the cross-sectional area of ​​the oil cylinder 11 in the upper reinforcing mechanism 5 is smaller than the cross-sectional area of ​​the oil cylinder 11 in the lower adjacent reinforcing mechanism 5, the hydraulic oil entering the upper adjacent reinforcing mechanism 5 from the lower reinforcing mechanism 5 pushes the upper piston 10 to move by an amplitude greater than the amplitude of the lower piston 10, and ultimately makes the distances by which the push rods 9 in all the reinforcing mechanisms 5 are extended relative to the corresponding oil cylinders 11 decrease from top to bottom, and the extension ratios of any two adjacent reinforcing mechanisms are equal.

[0060] In the event of a stroke, the tower body 4 will swing slightly in an overall tilted state without causing damage to the building body 1.

[0061] Third, in the case of strong winds, the tower body 4 is subjected to greater wind force. Under the action of the wind, the upper end of the tower body 4 will overcome the resistance of the corresponding resistance valve 29 and swing significantly. After that, it will be locked by the limiting mechanism 17 in the reinforcing mechanism 5 and swing slightly in a state of being tilted as a whole toward the side of the building body 1.

[0062] In the case of strong winds, when the upper end of the tower crane 3 swings significantly toward the building 1 under the action of strong winds, the two pistons 10 in the uppermost reinforcing mechanism 5 swing toward the side of the building 1 and pass over the corresponding limit mechanism 17, so that the limit mechanism 17 locks the reset of the pistons 10. In the process of the two pistons 10 in the reinforcing mechanism 5 penetrating into the corresponding oil cylinder 11, the hydraulic oil in the oil cylinder 11 on the building 1 side of the upper reinforcing mechanism 5 overcomes the corresponding resistance valve 29 and enters the space on the side of the tower crane 3 of the oil cylinder 11 in the adjacent reinforcing mechanism 5 below, and pushes the piston 10 in the lower reinforcing mechanism 5 to pass over the corresponding limit mechanism 17 and locks the reset of the two pistons 10 in the lower reinforcing mechanism 5. Since the cross-sectional area of ​​the oil cylinder 11 in each reinforcing mechanism 5 is smaller than the cross-sectional area of ​​the oil cylinder 11 in the next reinforcing mechanism 5, the contraction amplitude of the top rods 9 in all reinforcing mechanisms 5 relative to the corresponding oil cylinder 11 decreases from top to bottom and the contraction ratio of the top rods 9 in any two adjacent reinforcing mechanisms 5 relative to the corresponding oil cylinder 11 is equal, so that the tower crane 3 is inclined toward the building 1 as a whole in an inclined state. The inclined tower crane 3 overcomes part of the wind force in its inclined state while effectively reducing the swing amplitude of the tower crane 3 under strong wind, so that the tower crane 3 has less force on the fixed wall 2 of the building 1 under strong wind and effectively protects the building 1. The tower crane 3 has strong wind resistance under the action of all reinforcing mechanisms 5 without damaging the fixed wall 2 of the building 1.

[0063] When the strong wind ends, the limiting rods 19 in each reinforcement mechanism 5 are simultaneously pulled to release the reset lock of the corresponding piston 10 by the limiting rods 19 in the reinforcement mechanism 5. The pistons 10 and push rods 9 in all reinforcement mechanisms 5 are reset in the corresponding cylinders 11 under the swing-back reset action of the tower crane 3. After the pistons 10 and push rods 9 in all reinforcement mechanisms 5 are reset, the force on the limiting rods 19 is removed, and each limiting rod 19 is reset under the action of the corresponding spring B22.

[0064] The bending groove on the baffle in the resistance valve 29 makes it easier for the baffle to bend back and reset when the push rod 9 in the reinforcement mechanism 5 is extended relative to the oil cylinder 11.

[0065] In addition, the fixing plates at the ends of the two cylinders 11 of each reinforcing mechanism 5 in the present invention are fixed to the fixed wall 2 on the wall of the building 1 by bolts 27 and are parallel to the direction in which the top rod 9 in the reinforcing mechanism 5 extends and contracts relative to the cylinder 11, so that the force acting on the bolts connecting the reinforcing mechanism 5 and the building 1 is perpendicular to the wall surface to which they are fixed, the bolts are not easy to fall off, and the reinforcing mechanism 5 is less likely to damage the wall of the building 1 and fall off under the action of strong winds.

[0066] To sum up, the beneficial effects of the present invention are as follows: when the tower crane 3 of the present invention swings slightly at its upper end toward the building 1, the two top rods 9 in the uppermost reinforcing mechanism 5 will push the corresponding piston 10 to overcome the corresponding resistance valve 29 and penetrate into the corresponding cylinder 11 and push the hydraulic oil on the building 1 side in the cylinder 11 into the space on the tower crane 3 side in the cylinder 11 of the second reinforcing mechanism 5; the hydraulic oil on the tower crane 3 side in the cylinder 11 of the second reinforcing mechanism 5 pushes the corresponding piston 10 to penetrate into the corresponding cylinder 11 by a certain amplitude and presses the hydraulic oil on the building 1 side in the cylinder 11 to overcome the corresponding resistance valve 29 and press the hydraulic oil into the space on the tower crane 3 side in the cylinder 11 of the next reinforcing mechanism 5. Since the cross-sectional area of ​​the oil cylinder 11 in each reinforcing mechanism 5 is smaller than the cross-sectional area of ​​the oil cylinder 11 in the next reinforcing mechanism 5, the depth of the top rods 9 in all the reinforcing mechanisms 5 into the corresponding oil cylinder 11 decreases from top to bottom, causing the tower crane 3 to swing toward the building 1 in a state of overall slight inclination, thereby effectively buffering the force generated by the slight swing of the tower crane 3 toward the building 1 without causing damage to the fixed wall 2 of the building 1. Similarly, when the tower crane 3 in the present invention swings slightly at its upper end in the direction away from the building 1, the two top rods 9 in the uppermost reinforcing mechanism 5 will pull the corresponding piston 10 to compress the corresponding spring A15 to move away from the building 1, so that the hydraulic oil on the tower crane 3 side in the oil cylinder 11 in the next reinforcing mechanism 5 enters the building 1 side of the oil cylinder 11 in the upper reinforcing mechanism 5 through the corresponding resistance valve 29. At this time, the resistance valve 29 has no resistance, and the space on the tower crane 3 side in the oil cylinder 11 of the second reinforcing mechanism 5 is smaller, and the corresponding piston 10 is pulled to compress the corresponding spring A15 to move toward the tower crane 3 side by a certain amplitude, thereby sucking in the hydraulic oil on the tower crane 3 side in the oil cylinder 11 in the next reinforcing mechanism 5. Since the cross-sectional area of ​​the oil cylinder 11 in each reinforcing mechanism 5 is smaller than the cross-sectional area of ​​the oil cylinder 11 in the next reinforcing mechanism 5, the amplitude of movement of the top rods 9 in all the reinforcing mechanisms 5 toward the tower crane 3 decreases from top to bottom, causing the tower crane 3 to swing away from the building 1 in a state of overall slight inclination, thereby effectively buffering the force generated by the slight swing of the tower crane 3 away from the building 1 without causing damage to the fixed wall 2 of the building 1.

[0067] In the present invention, when the upper end of the tower crane 3 swings toward the building 1 with a large amplitude under the action of strong wind, the corresponding piston 10 passes over the corresponding limit mechanism 17 and is prevented from swinging back to the original position by the limit mechanism 17, so that the hydraulic oil on the building 1 side in the oil cylinder 11 of the upper reinforcement mechanism 5 overcomes the corresponding resistance valve 29 and enters the space on the side of the tower crane 3 of the oil cylinder 11 of the adjacent reinforcement mechanism 5 below and pushes the piston 10 in the lower reinforcement mechanism 5 to pass over the corresponding limit mechanism 17 and be prevented from swinging back to the original position by the limit mechanism 17. Since the cross-sectional area of ​​the oil cylinder 11 in each reinforcement mechanism 5 is smaller than that of the next reinforcement mechanism 5, the hydraulic oil on the building 1 side in the oil cylinder 11 of the upper reinforcement mechanism 5 can enter the space on the side of the tower crane 3 and push the piston 10 in the lower reinforcement mechanism 5 to pass over the corresponding limit mechanism 17 and be prevented from swinging back to the original position by the limit mechanism 17. Due to the cross-sectional area of ​​the oil cylinder 11 in the mechanism 5, the amplitude of movement of the top rods 9 in all the reinforcing mechanisms 5 toward the tower crane 3 decreases from top to bottom, so that the tower crane 3 is inclined toward the building 1 as a whole in an inclined state. The inclined tower crane 3 overcomes part of the wind force in its inclined state while effectively reducing the swing amplitude of the tower crane 3 under the action of strong wind, so that the tower crane 3 has less force on the fixed wall 2 of the building 1 under the action of strong wind and effectively protects the building 1. The tower crane 3 has strong wind resistance under the action of all the reinforcing mechanisms 5 without damaging the fixed wall 2 of the building 1.

[0068] In addition, the two cylinders 11 of each reinforcing mechanism 5 in the present invention are fixed to the fixed wall 2 on the wall of the building 1 by bolts 27 and are parallel to the direction in which the top rod 9 in the reinforcing mechanism 5 extends and contracts relative to the cylinder 11. Therefore, the reinforcing mechanism 5 is less likely to damage the wall of the building 1 and fall off under the action of strong winds.

Claims

1. A wind-resistant tower crane, characterized by: It includes a tower crane and a reinforcement mechanism, wherein the tower crane is connected to a fixed wall on a building body perpendicular to the wall surface through a plurality of reinforcement mechanisms evenly distributed in the vertical direction; The reinforcing mechanism includes a square frame, a push rod, a piston, a cylinder, a limit mechanism, an oil pipe, and a resistance valve, wherein the square frame is nested and installed in the tower body of the tower crane, two push rods are symmetrically hinged on both sides of the square frame, and a cylinder is nested and slid in a sealed manner on both push rods. The ends of the cylinders are hinged with a fixed plate connected to the fixed wall by bolts; the piston at the end of each push rod slides in the corresponding cylinder, and the cylinder spaces on both sides of the piston are filled with hydraulic oil. A spring A is installed on the side of the cylinder close to the square frame to hinder the movement of the piston toward the frame; the wall surface of each cylinder has a limit mechanism that prevents the piston from returning to its original position after the corresponding piston penetrates a certain depth; In two adjacent reinforcing mechanisms, the sides of the two oil cylinders in the upper reinforcing mechanism close to the building body are connected to the sides of the corresponding oil cylinders in the lower adjacent reinforcing mechanism close to the frame through oil pipes; The resistance valve includes a valve body, a slider, a spring C, and a baffle, wherein the valve body has an oil chamber and an oil channel connected to the oil chamber; the oil hole C on the side wall of the oil chamber is connected to the oil hole B of the oil cylinder in the reinforcement mechanism located above through an oil pipe, and the oil hole D on the side wall of the oil channel is connected to the oil hole A of the oil cylinder in the reinforcement mechanism located below through an oil pipe; elastic baffles slide in the two chutes A at the top and bottom of the oil channel, each baffle is connected to a slider, and the slider slides in the chutes B of the valve body, and a spring C for resetting the corresponding slider is installed in the circular groove above the wall of each chutes B; the side walls of the chutes A and the slider near the oil hole D are rough surfaces, while the side walls of the chutes A and the slider near the oil hole C are smooth surfaces; The oil hole B of the oil cylinder in the upper reinforcement mechanism close to the building body is connected to the oil hole A of the oil cylinder in the lower reinforcement mechanism close to the frame side through an oil pipe equipped with a resistance valve; The limiting mechanism includes a guide sleeve, a limiting rod, and a spring B. A limiting rod that cooperates with the corresponding piston is provided in the guide sleeve on the wall of the cylinder, and a spring B is installed to reset the limiting rod; the inner end of the limiting rod has an inclined surface that does not hinder the movement of the corresponding piston toward the building.

2. A wind-resistant tower crane according to claim 1, characterized in that: Two round pins A are symmetrically installed on both sides of the square frame, and a rotating sleeve A connected to the corresponding side push rod is nested and rotatable on the two round pins A; the ends of the cylinders are rotatably matched with the rotating sleeves B on the corresponding fixed plates.

3. The wind-resistant tower crane according to claim 1, characterized in that: A sliding sleeve is nested and slidably arranged on the push rod. The sliding sleeve is connected to the inner end of the oil cylinder through a spring A and is connected to the inner end of the oil cylinder through two steel wires.

4. The wind-resistant tower crane according to claim 1, characterized in that: The outer end of the limiting rod is provided with a manual pull ring.

5. The wind-resistant tower crane according to claim 1, characterized in that: The spring B is a compression spring.

6. The wind-resistant tower crane according to claim 1, characterized in that: The fixing plate is connected to the fixing wall on the building through bolts, or the fixing plate is connected to the bracket through bolts, and the bracket is connected to the fixing wall on the building through bolts.

7. The wind-resistant tower crane according to claim 1, characterized in that: The initial state of the end of the baffle is an arc bend toward the oil hole C.

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