Lifting device for building construction

Abstract

The invention discloses a lifting device for building construction, and belongs to the technical field of equipment for building construction. The steel rope pulls the cage, and the sudden stop effect is good. An electric energy device is arranged at the other end of the steel rope drum machine, and the drum machine rotates to drive a generator to rotate to generate electricity which is stored in a capacitor. According to the novel safe centrifugal enclasping device, when the elevator breaks down and falls or rushes to the top, the brake blocks are tightly attached to and clamp the rail columns to quickly reduce the falling speed of the elevator, and the novel safe centrifugal enclasping device is simple in structure and convenient to install, repair and maintain. According to the brand-new bottom buffering device, when a heavy-weight object falls, compared with rigid unloading of a traditional spring hydraulic cylinder, gas flexible unloading adopted by the novel bottom buffering device is more stable. The novel sliding rotating mechanism is arranged and connected with the spoiler, the spoiler can effectively resist high-altitude strong wind, stability of the cage is guaranteed, shaking is prevented, and the surface detection device detects the outer surface of the track column.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment for building construction, and in particular to a lifting device for building construction. Background Art

[0002] Elevators are a common piece of equipment on construction sites today. Also known as construction elevators, construction elevators are commonly used to transfer materials, cargo, or personnel between high and low levels. Common construction elevators on the market today can be divided into three types based on their transmission method: rack and pinion, rope, and hybrid. The hybrid type utilizes both transmission methods, each with a separate hoist cage. Rack and pinion elevators offer smooth transmission and are widely used for carrying people or light loads.

[0003] The rack and pinion type of construction elevators currently on the market still have many disadvantages. First, there is a lack of effective emergency stop measures in the event of a fault such as a gear rack meshing error causing a fall. Second, construction elevators cannot recycle energy. Third, although most construction elevators are equipped with safety centrifugal clamping devices such as speed limiters and fall arresters to promptly slow down the elevator in the event of a fault and overspeed fall, most of the related structures are complex, which brings problems to installation, repair and maintenance. Fourth, although construction elevators are equipped with buffers to control the operating speed and ensure the smoothness of transportation when starting or stopping, most of them lack bottom buffer devices. When they are loaded with heavy goods and land from the ground, there is a greater sense of frustration. Fifth, the working conditions at construction sites are complex, especially high altitudes are prone to strong winds or airflow conditions. Elevators are prone to shaking in windy weather, causing safety accidents. Sixth, in daily use, after being exposed to wind, sun, corrosion and friction, the outer surface of the sliding surface of the working surface used for lifting, such as the track column, will become uneven, which will bring safety hazards to daily use. Therefore, surface inspection is important, but most of them currently lack surface detection devices, and the track column is tens of meters high, which brings certain difficulties to the inspection. Summary of the Invention

[0004] The purpose of the present invention is to solve the problems existing in the prior art, such as lack of emergency stop device, low energy utilization rate, poor safety centrifugal clamping device, lack of bottom buffer device, inability to cope with strong wind conditions, lack of surface detection device, etc., and to propose a lifting device for construction.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solution: a lifting device for construction, comprising a vertically arranged steel structure frame, an L-shaped lifting platform connected to one side of the steel structure frame, and a hoist cage fixed on its horizontal plane; it is characterized in that the steel structure frame is vertically constructed by several standard sections using connecting bolts, and the standard sections include four symmetrically arranged track columns, which are fixed with steel plates.

[0006] Preferably, a rack is fixed on one side of the standard section, and several racks are connected to form a lifting rack; the lifting platform is fixed with a rotary self-locking motor at the top position of the cage, and the rotary self-locking motor is connected to a pair of 90° meshing bevel gear sets, one bevel gear in the bevel gear set is connected to the middle part of the output shaft of the rotary self-locking motor, and the other bevel gear is connected to a cylindrical gear through a gear coaxial axis that passes vertically through the vertical surface of the lifting platform; the cylindrical gear meshes with the lifting rack; the lifting platform is provided with a bearing on the same surface as the cylindrical gear, and the bearing meshes with the end of the lifting rack without teeth.

[0007] The vertical surface of the lifting platform is symmetrically arranged with a number of rollers on both sides. The rollers are meshed with two track posts in the same plane of the steel structure frame. The two rollers at the top of the lifting platform are coaxially connected to a track post detection device. The track post detection device consists of a set of meshing cylindrical gears and a speedometer. One of the cylindrical gears in the cylindrical gear set is coaxially fixed to the roller, and the other cylindrical gear is coaxially fixed with the speedometer. The outer edge of the speedometer is provided with a pointer, and the needle tip points to the scale. The output shaft of the rotary self-locking motor is also connected to a steel rope drum machine, one end of the rotating shaft of the steel rope drum machine is fixedly connected to the top of the output shaft of the rotary self-locking motor, and the other end of the rotating shaft is coaxially connected to an electric energy device. A steel rope is wound around the steel rope drum machine, and the other end of the steel rope is fixed to the top of the steel structure stand; a guide pulley is fixed to the top of the steel structure stand, and the steel rope is wound inside the guide pulley (208).

[0008] Preferably, two safety centrifugal clamping devices are symmetrically provided at the bottom of the cage, and the safety centrifugal clamping devices include a flywheel, a fixed plate A and a fixed plate B; a through hole is provided at the center of the fixed plate A, the flywheel is fixed on a rotating shaft, and the rotating shaft is rotatably connected to the through hole of the fixed plate A; the rotating shaft is fixed with an eccentric rotating shaft; the eccentric rotating shaft is fixed with a square slider, and the square slider is connected to a square frame; the square slider is arranged in the square frame and is slidably connected with the fixed plate B; two sliding rods are symmetrically fixed at both ends of the fixed plate B, and the two sliding rods pass through the two ends of the fixed plate A and form a sliding connection with the fixed plate A. The inner end surface of the fixed plate B is symmetrically rotated to connect the two rocker arms B, and each rocker arm B is simultaneously rotated to connect the rocker arm A and the rocker arm C, and the three rotate with each other; the two rocker arms C are rotatably connected to each other; the rocker arm A is rotatably connected to the rocker arm D; the two rocker arms D are symmetrically fixed on the square frame; a brake block is fixed on the outer side surface of the fixed plate B.

[0009] Preferably, a plurality of buffer devices are symmetrically provided at the bottom of the cage, and the buffer devices include an upper mold, a middle air cavity and a lower mold; the upper mold is plate-shaped, a square compression block is fixed in the middle of its lower surface, and four rotating shaft supports are symmetrically provided around the lower surface left and right and front and back; the middle air cavity is two plates arranged symmetrically up and down, and a gas-filled air cavity is provided in the middle between the two plates, and two hollow square slides (407) are symmetrically fixed on the left and right sides thereof, and a matching sliding block is slidably connected in the square slide; the lower mold is also plate-shaped, a square compression block is fixed in the middle of its upper surface, and four rotating shaft supports are symmetrically provided around the upper surface; the four rotating shaft supports of the upper mold and the lower mold are all rotatably connected to a rotating rod, and the rotating rod is simultaneously rotatably connected to the sliding block on the same side; the square compression blocks of the upper mold and the lower mold are both deep in the air cavity of the middle air cavity.

[0010] Preferably, a windshield is provided at the outer edge of the top of the cage, comprising a cylinder, a fixed rail, and a sliding block; the cylinder is fixed to one end of the fixed rail; the fixed rail is a hollow structure with a through-notch at the top; and a sliding block matching the interior of the fixed rail is provided. The windshield also includes a double-barreled rocker rotatably connected to one end of the sliding block, the double-barreled rocker rotatably connected to a connecting rod, one end of the connecting rod being connected to the double-barreled rocker and the other end being rotatably connected to a fixed block on one side, and a spoiler fixedly connected to the other side, the fixed block being fixed to the cage, and the spoiler being located outside the cage.

[0011] Compared with the prior art, the present invention provides a lifting device for construction, which has the following beneficial effects.

[0012] 1. The present invention adopts a steel rope to pull the cage, which can pull the cage in time when it falls due to a fault.

[0013] 2. The present invention provides an electric energy device at the other end of the rope drum machine. The electric energy device includes a generator and a storage capacitor. When the drum machine rotates, it drives the generator to generate electricity and stores it in the capacitor for use as an emergency power supply.

[0014] 3. The present invention is equipped with a new safety centrifugal clamping device, which uses the airflow generated by falling to exceed the safety threshold to start the flywheel and drive the connecting rod mechanism to make the brake block close to the track column to quickly reduce the falling speed of the elevator. Compared with traditional safety devices, its structure is simple and easy to install, repair and maintain.

[0015] 4. The present invention is equipped with a new bottom buffer device. When a heavy load is dropped, the gas flexible unloading used in the present invention is more stable compared to the traditional rigid unloading of springs and hydraulic cylinders.

[0016] 5. The present invention is provided with a track column detection device that utilizes the meshing distance between the two cylindrical gears of the cylindrical gear set to change, so that the pointer on the speedometer changes the scale value on the pointing scale according to the change of the edge speed to point to a specific value. A positive value represents a convex track column at this location, and a negative value represents a concave track column at this location. The specific values ​​are stored in the speedometer, and then the surface condition of the track column 102 is judged based on these values ​​to decide whether to repair or replace it.

[0017] 6. The present invention is provided with a wind shield device, on which there is a spoiler with an adjustable angle. The spoiler can effectively resist high-altitude strong winds, ensure the stability of the cage, and prevent shaking.

[0018] Other advantages, objects and features of the present invention will be described in part in the following description; and in part will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0020] Figure 2 for Figure 1 Enlarged view of point I in the middle.

[0021] Figure 3 It is the front view of the present invention.

[0022] Figure 4 for Figure 3 Middle AA section view.

[0023] Figure 5 for Figure 3 Middle BB cross-section view.

[0024] Figure 6 It is a top view of the present invention.

[0025] Figure 7 for Figure 6 Middle CC section view.

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the safety centrifugal clamping device.

[0027] Figure 9 This is the main view of the safety centrifugal clamping device.

[0028] Figure 10 It is a schematic diagram of the three-dimensional structure of the buffer device.

[0029] Figure 11 It is a schematic diagram of the three-dimensional structure of the track column detection device.

[0030] Figure 12 This is the front view of the track post detection device.

[0031] Figure 13 It is a schematic diagram of the three-dimensional structure of the windshield device.

[0032] In the figure: 1. Steel structure frame; 101. Standard section; 102. Track column; 2. Drive head; 201. Rotary self-locking motor; 202. Bevel gear set; 203. Cylindrical gear; 204. Lifting rack; 205. Rope drum machine; 206. Electric energy device; 207. Steel rope; 208. Guide pulley; 209. Bearing; 210. Gear coaxial axis; 211. Roller; 21. Track column detection device; 212. Cylindrical gear set; 213. Speedometer; 214. Pointer; 215. Dial; 3. Safety centrifugal clamping device; 301. Fixed plate A; 302. Fixed plate B; 303. Rocker A; 304. Rocker B; 305, rocker C; 306, rocker D; 307, slide bar; 308, brake block; 309, flywheel; 310, rotating shaft; 311, eccentric rotating shaft; 312, square slider; 313, square frame; 4, buffer device; 401, upper mold; 402, middle air cavity; 403, lower mold; 404, square compression block; 405, rotating shaft support; 406, air cavity; 407, square slide; 408, sliding block; 409, rotating rod; 5, wind shield; 501, fixed slide rail; 502, sliding block; 503, double-tube rocker; 504, connecting rod; 505, fixed block; 506, spoiler; 507, cylinder; 6, lifting platform; 7, cage. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figures 1-13 A lifting device for construction, including a vertically arranged steel structure frame, an L-shaped lifting platform 6 connected to one side of the steel structure frame, and a cage 7 fixed on its horizontal surface; the steel structure frame 1 is vertically constructed by a number of standard sections 101 using connecting bolts, and the standard sections 101 include four symmetrically arranged track columns 102, and the track columns 102 are fixed with steel plates. Modular standard parts greatly improve the installation efficiency. In addition to fastening with connecting bolts, welding can also be used in some positions to enhance the stability of the structure. The cage 7 is also provided with a protective net, an electric switch door and an operating table, etc. The specific installation position and shape are no longer specifically shown in the present invention.

[0035] A rack is fixed on one side of the standard section 101, and several racks are connected to form a lifting rack 204. The lifting platform 6 has a rotating self-locking motor 201 fixed at the top position of the cage 7. The rotating self-locking motor 201 is connected to a pair of 90-degree meshing bevel gear sets 202. One bevel gear in the bevel gear set 202 is connected to the middle of the output shaft of the rotating self-locking motor 201, and the other bevel gear is connected to a cylindrical gear 203 via a gear coaxial axis 210 that passes vertically through the vertical surface of the lifting platform 6. The cylindrical gear 203 meshes with the lifting rack 204. The lifting platform 6 is provided with a bearing 209 on the same surface as the cylindrical gear 203. The bearing 209 meshes with the end of the lifting rack 204 without teeth. Several rollers 211 are symmetrically arranged on both sides of the vertical surface of the lifting platform 6. The rollers 211 mesh with two track columns 102 in the same plane as the steel structure frame 1. Start the rotating self-locking motor 201, and the forward and reverse rotation of the motor is transmitted to the cylindrical gear 203 through the bevel gear set 202 and the gear coaxial shaft 210, driving the roller 211 to move up and down along the track column 102, and then completing the ascent and descent of the cage 7. The presence of the bearing 209 can reduce the resistance during lifting and lowering of the present invention.

[0036] The two rollers 211 at the top of the lifting platform 6 are both coaxially connected to a track post detection device 21. The track post detection device 21 consists of a set of meshing cylindrical gears 212 and a speedometer 213. One of the cylindrical gears in the cylindrical gear set 212 is coaxially fixedly connected to the roller 211, and the other cylindrical gear is coaxially fixed with the speedometer 213. The outer edge of the speedometer is provided with a pointer 214, the needle tip pointing to the scale 215. The other cylindrical gear can also be fixed to the cage 7 via a bracket. In daily use, the surface of the track post 102 will become uneven due to corrosion from wind and sun, and friction from the rollers 211. This can pose a safety hazard during daily use. Therefore, surface inspection of the track post 102 is important. However, the track post 102 is tens of meters high, which makes inspection difficult. The present invention is provided with a track column detection device 21. During the movement of the roller 211, the surface of the track column 102 is either convex or concave, causing the meshing distance between the roller 211 and the track column 102 to change. Because the rotation center axes of the two cylindrical gears of the cylindrical gear set 212 are fixed on the roller 211 and the cage respectively, the meshing distance between the two cylindrical gears of the cylindrical gear set 212 also changes, causing the edge linear speed of the cylindrical gear on the cage to change. The speed meter 213 is coaxially linked with the cylindrical gear, measures the speed, and processes it. The pointer 214 fixed thereon changes the scale value on the scale table 215 to point to a specific value according to the change in edge speed. In the figure, a positive value represents a convexity of the track column 102 at this location, and a negative value represents a concaveness of the track column 102 at this location. The specific value is stored in the speed meter 213. The surface condition of the track column 102 is then judged based on these values ​​to decide whether to repair or replace it.

[0037] The output shaft of the rotation self-locking motor 201 is also connected with a steel rope winding drum machine 205, one end of the rotating shaft of the steel rope winding drum machine 205 is fixedly connected with the top end of the output shaft of the rotation self-locking motor 201, and the other end of the rotating shaft is coaxially connected with an electric energy device 206. The steel rope winding drum machine 205 is wound with a steel rope 207, and the other end of the steel rope 207 is fixed to the top end of the steel structure stand 1; the top end of the steel structure stand 1 is fixed with a guide pulley 208, and the steel rope 207 is wound in the guide pulley 208. The electric energy device 206 includes a generator and a capacitor, when the steel rope winding drum machine 205 rotates, the generator generates electricity, and the electric energy is stored in the capacitor, and some equipment can be powered when necessary, such as an operation table. The steel rope winding drum machine 205 rotates synchronously with the rotation self-locking motor 201, drives the steel rope 207 to be wound on the winding drum or released from the winding drum, and the guide pulley 208 plays a role in positioning and tensioning the steel rope 207, so as to ensure that the steel rope 207 will not be bent and knotted, and keeps in the best working state. A sensor is arranged at the back of the lifting platform 6 opposite the meshing position of the cylindrical gear 203 and the lifting rack 204, which detects the meshing state of the two at any time, because one end of the steel rope 207 is fixed to the top end of the steel structure stand 1, when the cylindrical gear 203 and the lifting rack 204 are out of gear, such as tooth falling off or disengaging, the rotation self-locking motor 201 will immediately stop running and lock the output shaft in the current state, so that the steel rope winding drum machine 205 also stops rotating, and the steel rope 207 will immediately stop the cage 7, preventing accidents from happening.

[0038] Two safety centrifugal clamping devices 3 are symmetrically provided at the bottom of the cage 7, and the safety centrifugal clamping devices 3 include a flywheel 309, a fixed plate armor 301 and a fixed plate B 302; a through hole is opened at the center of the fixed plate armor 301, and the flywheel 309 is fixed on the rotating shaft 310, and the rotating shaft is rotatably connected to the through hole of the fixed plate armor 301; the rotating shaft 310 is fixed with an eccentric rotating shaft 311; the eccentric rotating shaft 311 is fixed with a square slider 312, and the square slider 312 is connected to a square frame 313; the square slider 312 is arranged in the square frame 313 and is connected to it in an up and down sliding connection; two sliding rods 307 are symmetrically fixed at both ends of the fixed plate B 302, and the two sliding rods 307 pass through the two ends of the fixed plate armor 301 and form a sliding connection with it. The inner end surface of the fixed plate B 302 is symmetrically rotated to connect the two rocker arms B 304, and each rocker arm B 304 is simultaneously rotated to connect the rocker arm A 303 and the rocker arm C 305, and the three rotate with each other; the two rocker arms C 305 are rotationally connected to each other; the rocker arm A 303 is rotationally connected to the rocker arm D 306; the two rocker arms D 306 are symmetrically fixed on the square frame 313; a brake block 308 is fixed on the outer side surface of the fixed plate B 302, and the shape of the brake block 308 matches the outer surface of the track column. The safety centrifugal clamping device 3 is the second safety device. When the lifting device is operating under normal conditions, it will drive the airflow to rotate the flywheel 309. However, because there is a damping lock between the square slider 312 and the square frame 313, the flywheel 309 cannot rotate. At this time, the brake block 308 does not contact the track column 102 to prevent interference with the normal operation of the lift. When an accident occurs and causes a rapid fall, the airflow driven exceeds the damping lock threshold between the square slider 312 and the square frame 313. This is when the flywheel 309 rotates, causing the eccentric shaft 311 to drive the square slider 312 in the square frame. The frame 313 slides up and down. Due to the damping properties between the two, the square frame 313 also changes in the vertical direction. This in turn drives the rocker D 306 to swing left and right, causing the rockers A, B, and C to change. The fixed plate B 302 uses the sliding rod 307 to change the distance between it and the fixed plate A 301, so that the brake block 308 presses against the track column 102. Because the airflow direction caused by the fall does not change, it is difficult for the flywheel 309 to drive the brake block 308 to return. The brake block 308 has damping properties, and friction on the track column 102 slows the fall until the steel rope 207 pulls the cage 7. Compared with traditional sensor-activated clamping devices, the safety centrifugal clamping device 3 of this device relies entirely on the falling characteristics to achieve locking and deceleration. It is highly reliable and easy to repair and install.

[0039] The bottom 7 of the cage is symmetrically provided with several buffer devices 4, the buffer device 4 comprises an upper die 401, a middle air cavity 402 and a lower die 403; the upper die 401 is plate-shaped, the upper surface is fixed on the lower surface of the cage bottom, the middle is fixed with a square compression block 404, and the lower surface is symmetrically provided with four rotating shaft supports 405 around; the middle air cavity 402 is two plates symmetrically arranged, a gas-filled cavity 406 is arranged in the middle between the two plates, two hollow square slides 407 are symmetrically fixed on the left and right sides of the cavity 406, and a sliding block 408 matched with the square slide 407 is slidably connected in the square slide 407; the lower die 403 is also plate-shaped, the upper surface is symmetrically provided with four rotating shaft supports; the four rotating shaft supports of the upper die 401 and the lower die 403 are rotatably connected with a rotating rod 409, and the rotating rod 409 is rotatably connected with the sliding block 408 on the same side; the square compression block 404 of the upper die 401 and the lower die 403 is inserted into the cavity 406 of the middle air cavity 402. When the cage 7 lands on the ground, it first collides with the lower surface of the lower die 403, the square compression block 404 of the lower die 403 is more deeply inserted into the middle air cavity 402, the gas in the cavity 406 of the middle air cavity 402 is compressed, the square compression block 404 of the upper die 401 is lifted, the impact force is gradually unloaded by the gas in the cavity 406 of the middle air cavity 402, the rotating rod is rotated by the impact force, a part of the impact force is shared, and the structure is not damaged. Compared with the traditional rigid unloading of spring and hydraulic cylinder, the gas flexible unloading adopted by the present application is more stable.

[0040] The wind shield device 5 is provided at the top outer side edge of the cage 7, and comprises a pneumatic cylinder 507, a fixed slide rail 501 and a sliding block 502; the pneumatic cylinder is fixed at one end of the fixed slide rail; the fixed slide rail is a hollow structure, and a through gap is formed at the top of the fixed slide rail; the fixed slide rail is internally provided with the sliding block 502 matched with the inside of the fixed slide rail. The wind shield device 5 further comprises a double-cylinder rocker 503 rotatably connected to one end of the sliding block 502, a connecting rod 504 rotatably connected to the double-cylinder rocker 503, one end of the connecting rod 504 being connected to the double-cylinder rocker 503 and the other end being rotatably connected to a fixed block 505 on one side surface, a spoiler 506 being fixedly connected to the other side surface, the fixed block 505 being fixed to the cage 7, and the spoiler 506 being located outside the cage 7. When the lifting device is running in the air, it is easily affected by strong wind or airflow and shakes. A plurality of wind direction and speed sensors are arranged outside the cage 7 to detect the wind direction and speed. After detection, data is transmitted to the operation platform to adjust the wind shield device 3. The pneumatic cylinder 507 is started, the telescopic rod of the pneumatic cylinder 507 is telescoped, the sliding block 502 slides in the fixed slide rail 501, the double-cylinder rocker 503 is driven to move, and then the connecting rod 504 rotates around the fixed block 505. Because the spoiler 506 is fixedly installed on the connecting rod 504, the state of the spoiler 506 is adjusted according to the wind direction and speed to interfere with the airflow blowing to the cage, so as to enhance the stability of the cage. In addition, the installation position and state of the wind shield device shown in the application are only one of them, and the operation platform and the plurality of sensors mentioned are all the same. Users can decide according to their actual situation, which does not represent the only one.

[0041] Working process: according to the needs, the standard parts 101 are built into the steel structure stand 1, and various parts are installed. The specified floor is determined by the operation platform. The self-locking motor 201 is started, the cylindrical gear 203 and the lifting rack 204 are engaged, the roller 211 rolls on the track column 102, and the cage 7 is lifted to the specified floor. When in the air, the sensor for detecting the wind speed and direction will transmit information to the operation platform. The operation platform controls the wind shield device 5 to start and adjusts the angle of the spoiler 506 to reduce the influence of the airflow on the cage, so as to ensure smooth operation. When the heavy load is landed on the ground, the impact force is absorbed by the shock-absorbing device 4, reducing the impact on the cage 7. If the cylindrical gear and rack have an accident and cause a sudden drop, the sensor will immediately stop the rotation of the self-locking motor 201 and lock the current state of the self-locking motor 201. If the size of the airflow exceeds the damping locking threshold value between the square sliding block 312 and the square frame 313, the flywheel of the safety centrifugal holding device 3 at the bottom of the cage 7 rotates, the brake block clamps the track column 102 to quickly slow down, and the steel rope 207 pulls the cage 7. When the steel rope winding drum machine 205 rotates, it drives the generator to generate electricity and stores the electrical energy in the capacitor, which can provide power in an emergency.

[0042] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

[0043] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A lifting device for construction, comprising a vertically arranged steel structure frame (1), an L-shaped lifting platform (6) connected to one side of the steel structure frame (1), and a hoist cage (7) fixed on its horizontal surface; characterized in that: The steel structure stand (1) is vertically constructed by a plurality of standard sections (101) using connecting bolts. The standard section (101) includes four symmetrically arranged track columns (102), and the track columns (102) are fixed with steel plates.

2. A lifting device for construction according to claim 1, characterized in that: A rack is fixed on one side of the standard section (101), and a plurality of racks are connected to form a lifting rack (204); a rotating self-locking motor (201) is fixed at the top position of the cage (7) of the lifting platform (6), and the rotating self-locking motor (201) is connected to a pair of 90° meshing bevel gear sets (202), one bevel gear in the bevel gear set (202) is connected to the middle of the output shaft of the rotating self-locking motor (201), and the other bevel gear is connected to the gear coaxial axis ( 210) is connected to a cylindrical gear (203); the cylindrical gear (203) is engaged with a lifting rack (204); the lifting platform (6) is provided with a bearing (209) at the same surface as the cylindrical gear (203), and the bearing (209) is engaged with the end of the lifting rack (204) without teeth; a plurality of rollers (211) are symmetrically arranged on both sides of the vertical surface of the lifting platform (6), and the plurality of rollers (211) are engaged with two track columns (102) in the same plane of the steel structure frame (1).

3. A lifting device for construction according to claim 3, characterized in that: The two rollers (211) at the top of the lifting platform (6) are both coaxially rotatably connected to a track column detection device (21). The track column detection device (21) is composed of a group of meshing cylindrical gear sets (212) and a speedometer (213). One cylindrical gear of the cylindrical gear set (212) is coaxially fixedly connected to the roller (211), and the other cylindrical gear is coaxially fixed with the speedometer (213). A pointer (214) is provided on the edge of the outer surface of the speedometer, and the needle tip points to the scale (215).

4. A lifting device for construction according to claim 2, characterized in that: The output shaft of the rotary self-locking motor (201) is also connected to a steel rope drum machine (205), one end of the rotating shaft of the steel rope drum machine (205) is fixedly connected to the top end of the output shaft of the rotary self-locking motor (201), and the other end of the rotating shaft is coaxially connected to an electric energy device (206).

5. A lifting device for construction according to claim 3, characterized in that: A steel rope (207) is wound around the steel rope drum machine (205), and the other end of the steel rope (207) is fixed to the top of the steel structure stand (1); a guide pulley (208) is fixed to the top of the steel structure stand (1), and the steel rope (207) is wound inside the guide pulley (208).

6. A lifting device for construction according to claim 1, characterized in that: Two safety centrifugal clamping devices (3) are symmetrically provided at the bottom of the cage (7), and the safety centrifugal clamping devices (3) include a flywheel (309), a fixed plate armor (301) and a fixed plate B (302); a through hole is opened at the center of the fixed plate armor (301), and the flywheel (309) is fixed on the rotating shaft (310), and the rotating shaft is rotatably connected to the through hole of the fixed plate armor (301); the rotating shaft (310) is fixed with an eccentric rotating shaft (311); the eccentric rotating shaft (311) is fixed with a square slider (312), and the square slider (312) is connected to a square frame (313); the square slider (312) is arranged in the square frame (313) and is connected to the square frame in an up-and-down sliding manner; two sliding rods (307) are symmetrically fixed at both ends of the fixed plate B (302), and the two sliding rods (307) pass through the two ends of the fixed plate armor (301) and are connected to the fixed plate armor (301) in a sliding manner.

7. A lifting device for construction according to claim 7, characterized in that: The inner end surface of the fixed plate B (302) is symmetrically rotated to connect the two rocker arms B (304), and each rocker arm B (304) is simultaneously rotated to connect the rocker arm A (303) and the rocker arm C (305), and the three rotate with each other; the two rocker arms C (305) are rotationally connected to each other; the rocker arm A (303) is rotationally connected to the rocker arm D (306); the two rocker arms D (306) are symmetrically fixed on the square frame (313); a brake block (308) is fixed on the outer side surface of the fixed plate B (302).

8. A lifting device for construction according to claim 1, characterized in that: The bottom of the cage (7) is symmetrically provided with a plurality of buffer devices (4), and the buffer device (4) includes an upper mold (401), a middle air cavity (402) and a lower mold (403); the upper mold (401) is plate-shaped, and a square compression block (404) is fixed in the middle of its lower surface, and four rotating shaft supports (405) are symmetrically provided around the lower surface in the left and right front and back directions; the middle air cavity (402) is composed of two plates arranged symmetrically up and down, and an air cavity (406) filled with gas is provided in the middle between the two plates, and two hollow square slides (407) are symmetrically fixed on the left and right sides thereof, and the square slides (407) are symmetrically provided on the left and right sides thereof. 07) is slidably connected to a matching sliding block (408); the lower mold (403) is also plate-shaped, with a square compression block (404) fixed in the middle of its upper surface, and four rotating shaft supports are symmetrically provided around the upper surface; the four rotating shaft supports of the upper mold (401) and the lower mold (403) are all rotatably connected to a rotating rod (409), and the rotating rod (409) is simultaneously rotatably connected to the sliding block (408) on the same side; the square compression blocks (404) of the upper mold (401) and the lower mold (403) are both deeply inserted into the air cavity (406) of the middle air cavity (402).

9. A lifting device for construction according to claim 1, characterized in that: A windshield device (5) is provided at the outer edge of the top of the cage (7), and the windshield device (5) includes a cylinder (507), a fixed slide rail (501) and a sliding block; the cylinder is fixed to one end of the fixed slide rail; the fixed slide rail is a hollow structure with a through notch on the top; the fixed slide rail is provided with a sliding block (502) that matches the interior thereof.

10. A lifting device for construction according to claim 9, characterized in that: The windshield device (5) further includes a double-tube rocker (503) rotatably connected to one end of the sliding block (502), the double-tube rocker (503) being rotatably connected to a connecting rod (504), one end of the connecting rod (504) being connected to the double-tube rocker (503), and the other end being rotatably connected to a fixed block (505) on one side, and a spoiler (506) being fixedly connected to the other side, the fixed block (505) being fixed on the cage, and the spoiler (506) being located outside the cage (7).

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