Intelligent anti-falling device of construction hoist

Abstract

The utility model relates to the field of elevator anti-falling devices, in particular to an intelligent anti-falling device of a construction elevator, which comprises a guide rail bracket, the guide rail bracket is fixedly mounted on the construction ground, the guide rail bracket is formed by fixing four cylindrical rods along a rectangle, an anti-falling plate is arranged at the lateral position of the guide rail bracket, and the anti-falling plate is arranged on the guide rail bracket. The outer side face of the anti-falling plate is used for being connected with a hanging basket of the construction elevator, shaft rods are symmetrically installed at the upper positions of the inner side wall of the anti-falling plate, speed measuring wheels are installed at the tail ends of the shaft rods, and the outer rings of the speed measuring wheels are attached to the outer side of the guide rail frame. Guide strip blocks are symmetrically and fixedly installed on the guide rail frame, rectangular holes are formed in the inner sides of the guide strip blocks, one sides of the rectangular holes are communicated with rectangular grooves, and anti-falling square pipes are inserted into the rectangular holes. Therefore, a safer and more reliable anti-falling effect is achieved, and a better guarantee is provided for safe operation of the building hoist.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of elevator anti-falling device, specifically to an intelligent anti-falling device of construction elevator. BACKGROUND

[0002] In the field of building construction, the construction elevator is an important equipment for transporting personnel and materials, and its safety performance is crucial. Among them, the anti-falling device is one of the core components to ensure the safe operation of the elevator.

[0003] Most of the traditional intelligent anti-falling devices use locking mechanisms. When the speed measuring wheel detects abnormal falling, the elevator's basket is locked instantly through mechanical structure. Although this instantaneous locking method can prevent the basket from falling further to some extent, it has certain drawbacks. When the locking mechanism is triggered instantly, the huge kinetic energy of the basket will be forcibly stopped in a very short time, generating a strong impact force. This impact force not only causes serious damage to the structure of the elevator, shortening the service life of the equipment, but also greatly threatens the safety of the passengers in the basket. The passengers may be injured by collision, falling, etc. due to inertia under this sudden impact, and even their lives are in danger.

[0004] With the continuous improvement of the safety standards of building construction, higher requirements are put forward for the performance of the anti-falling device of the construction elevator. It is urgent to develop a device that can realize the anti-falling function more safely and stably to overcome the drawbacks of the traditional instantaneous locking method and reduce the damage to the passengers in the basket and the equipment itself. SUMMARY

[0005] In view of the problems in the prior art, the utility model provides an intelligent anti-falling device of construction elevator.

[0006] The utility model solves the technical problems and adopts the technical scheme: an intelligent anti-falling device of construction elevator, including guide rail frame, the guide rail frame is fixedly installed on the construction ground, the guide rail frame is fixed by four cylindrical poles along the rectangle, the lateral position of guide rail frame is provided with the anti-falling board, the outer side of anti-falling board is used for connecting with the basket of construction elevator, the inner side wall of anti-falling board is symmetrically installed with the shaft rod in upper position, is installed with the speed measuring wheel at the end of shaft rod, and the outer ring of speed measuring wheel is attached to the outer side of guide rail frame;

[0007] Symmetrically fixedly installed with the guide strip block on the guide rail frame, the inner side position of guide strip block is provided with the rectangular hole, one side of rectangular hole is communicated with the rectangular groove, the anti-falling square tube is inserted in the rectangular hole, the side of anti-falling square tube towards rectangular groove is provided with the positioning hole, the bottom of anti-falling square tube is welded with the rectangular plate, the bottom of rectangular plate is placed with the buffer spring, the bottom of buffer spring is connected with the limiting plate, the upper end surface of limiting plate is fixedly connected with the bottom of guide strip block, and the lower end surface of limiting plate is in abutment with the construction ground;

[0008] A rotating speed sensor is arranged at a lateral position close to the speed measuring wheel, and the rotating speed sensor is fixedly connected with the inner side wall of the anti-falling plate through a positioning rod; a central processing module, a hydraulic driving rod and a power supply module are sequentially arranged at a central position of the inner side wall of the anti-falling plate; and the rotating speed sensor, the central processing module, the hydraulic driving rod and the power supply module are electrically connected.

[0009] Two sleeve racks are symmetrically arranged at two side positions close to the hydraulic driving rod on the inner side wall of the anti-falling plate, a falling prevention pin is inserted into the head of each sleeve rack, one end of the falling prevention pin is located in the rectangular groove, the shape of the falling prevention pin and the positioning hole is matched, the other end of the falling prevention pin is welded with a connecting plate, a limiting spring is arranged between adjacent connecting plates, a strip plate is symmetrically welded on the opposite side of the outer side wall of each connecting plate, a round rod is welded between two strip plates on the same side, the output end of the hydraulic driving rod is connected with a driving plate, and a triangular extrusion block is symmetrically arranged at the end of the driving plate.

[0010] Specifically, a placing rack is arranged on the top of the guide rail frame, a winding roller is arranged on the top of the placing rack, a positioning groove is arranged in the inner wall of the winding roller, a falling prevention rope is embedded and fixed in the positioning groove, the falling prevention rope is wound on the middle position of the outer ring of the winding roller, a first horizontal rod is fixedly arranged at the end of the falling prevention rope, and the first horizontal rod is fixedly arranged on the top inner side wall of the falling prevention square tube.

[0011] Specifically, a silica gel pad sleeve is embedded on the outer ring of the speed measuring wheel, and a V-shaped groove is arranged on the outer wall of the silica gel pad sleeve.

[0012] Specifically, a long strip plate is welded at the end of the triangular extrusion block, and a circular arc chamfer is arranged at the connection between the long strip plate and the triangular extrusion block.

[0013] Specifically, the cross section of the falling prevention pin and the positioning hole is square, and the size of the falling prevention pin is smaller than that of the positioning hole.

[0014] Specifically, a second horizontal rod is symmetrically arranged on the inner side wall of the anti-falling plate, a circular arc positioning plate is arranged at the end of the second horizontal rod, and the circular arc positioning plate is inserted into the outer side wall of the guide rail frame.

[0015] Specifically, the winding length of the falling prevention rope relative to the winding roller is not greater than 1m.

[0016] The beneficial effects of the utility model are as follows:

[0017] The utility model relates to an intelligent anti-falling device of construction hoist, the utility model construction when the hoist is abnormal, the rotational speed sensor detects the rotational speed of the speed measuring wheel and increases momentarily, and the hydraulic drive rod is recovered through the central processing module control, and the two triangular extrusion blocks are moved to one end of the anti-falling plate through the hydraulic drive rod, the triangular extrusion block inclined surface region originally contacting the outer lateral wall of the round rod is separated from it, the two anti-falling pins are pushed in the sleeve frame sliding through the compressed limit spring, and move to one side of the anti-falling square tube, the moving process is synchronous with the falling process of the hanging basket, that is, when the hanging basket falls a certain height, the limit spring pushes the anti-falling pin into the positioning hole and locks, at this moment, the anti-falling square tube falls with the hanging basket, that is, the anti-falling square tube slides down along the rectangular hole and directly extrudes the buffer spring, since the buffer spring has greater elasticity, the falling momentum is buffered through the compressed buffer spring until the hanging basket is stationary, compared with the traditional anti-falling device, the non-instantaneous locking anti-falling mode is adopted, the kinetic energy of the locked hanging basket is slowly offset through the spring, thereby realizing more safe and reliable anti-falling effect and providing better guarantee for the safe operation of the construction hoist.

[0018] The utility model discloses an intelligent anti-falling device of construction hoist, the utility model is based on above-mentioned basis when the hanging basket falls, the anti-falling square tube will drive the anti-falling rope synchronous descent in the sliding process, and the anti-falling rope is separated from the winding roller when falling, and the anti-falling rope is completely straightened and locks the position of the anti-falling square tube after being separated from the winding roller completely, which can reduce the excessive compression of the buffer spring and improve the service life of the buffer spring, meanwhile, the inner lateral wall of the anti-falling plate is symmetrically installed with the cross bar, the cross bar is installed with the circular arc positioning plate at the end, and the circular arc positioning plate is inserted in the outer lateral wall of the guide rail frame, the circular arc positioning plate can slide on the outer side of the guide rail frame, the overall stability during the buffering of the hanging basket to the stationary process when falling accidentally is increased, and transverse shaking is not easy to occur. ACCURACY OF DRAWINGS

[0019] The utility model will be further explained in connection with the drawings and examples.

[0020] Figure 1 It is the overall structure perspective drawing of the utility model;

[0021] Figure 2 It is the utility model Figure 1 The local amplification schematic view of A area in the utility model;

[0022] Figure 3 It is the partial structure schematic of the utility model Figure 1 ;

[0023] Figure 4 It is the utility model Figure 3 The local amplification schematic view of B area in the utility model;

[0024] Figure 5Part structure diagram of the utility model Figure 2

[0025] Figure 6 Part structure diagram of the utility model Figure 4

[0026] Figure 7 Part structure diagram of the utility model Figure 3

[0027] Figure 8 Part structure diagram of the utility model Figure 7

[0028] Figure 9 Part structure diagram of the utility model Figure 4

[0029] Figure 10 Part structure diagram of the utility model Figure 9

[0030] In the drawing: 1, guide rail frame, 2, anti-falling plate, 3, speed sensor, 4, central processing module, 5, hydraulic drive rod, 6, sleeve frame, 7, placing frame, 21, second cross rod, 22, circular arc positioning plate, 23, shaft, 24, speed measuring wheel, 61, anti-falling pin, 62, connecting plate, 63, limit spring, 64, strip plate, 65, round rod, 66, drive plate, 67, triangular extrusion block, 71, winding roller, 72, anti-falling rope, 671, long strip plate, 141, first cross rod. DETAILED DESCRIPTION

[0031] In order to make the technical means, creation features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0032] In addition, the terms in the following text are defined based on the functions in the utility model and can be different according to the intentions or habits of users and operators. Therefore, these terms are defined based on the entire content of the specification.

[0033] Referring to Figures 1-10 , the intelligent anti-falling device of the construction hoist comprises a guide rail frame 1, the guide rail frame 1 is fixedly installed on a construction ground, the guide rail frame 1 is formed by fixing four cylindrical rods along a rectangle, adjacent two cylindrical rods are fixed by transversely arranged reinforcing rods, an anti-falling plate 2 is arranged on the lateral position of the guide rail frame 1, the outer side of the anti-falling plate 2 is used for connecting with the hanging basket of the construction hoist, that is, the anti-falling plate 2 moves together with the hanging basket of the construction hoist;

[0034] ​​​​​​The inner side wall of the anti-falling plate 2 is symmetrically provided with an axle 23 at the upper position, a speed measuring wheel 24 is arranged at the end of the axle 23, and the outer ring of the speed measuring wheel 24 is attached to the outer side of the guide rail frame 1. In normal operation of the construction elevator, the speed measuring wheel 24 is synchronously driven to roll on the outer wall of the cylindrical rod of the guide rail frame 1. Since the lifting speed of the basket is constant during operation, the rolling speed of the speed measuring wheel 24 along the guide rail frame 1 remains unchanged.

[0035] Meanwhile, the outer ring of the speed measuring wheel 24 is embedded with a silica gel sleeve, and a V-shaped groove is formed on the outer wall of the silica gel sleeve, which increases the friction between the speed measuring wheel 24 and the guide rail frame 1, and the speed measuring wheel 24 is less likely to slip during rolling.

[0036] The guide rail frame 1 is symmetrically provided with a guide strip block 11, which can be fixed by high-strength bolts for easy disassembly.

[0037] A rectangular hole 12 is arranged at the inner side of the guide strip block 11, and a rectangular groove 13 is connected to one side of the rectangular hole 12. An anti-falling square tube 14 is inserted into the rectangular hole 12, and a positioning hole 15 is formed on the side of the anti-falling square tube 14 facing the rectangular groove 13. Multiple positioning holes 15 are evenly distributed along the path of the anti-falling square tube 14, and the distance between adjacent positioning holes 15 is not greater than 30 cm.

[0038] A rectangular plate 16 is welded to the bottom of the anti-falling square tube 14, a buffer spring 17 is placed on the bottom of the rectangular plate 16, and a limiting plate 18 is connected to the bottom of the buffer spring 17. The upper end surface of the limiting plate 18 is fixedly connected to the bottom of the guide strip block 11, and the lower end surface of the limiting plate 18 is in contact with the construction ground. The length of the buffer spring 17 is generally not less than 1 m, that is, the height of the bottom of the anti-falling square tube 14 from the ground is greater than 1 m. Therefore, when installing the basket of the construction elevator, the top of the basket should be connected and fixed on one side of the anti-falling plate 2, so as to ensure that the bottom of the basket is in contact with the ground, facilitating the entry and exit of the construction personnel.

[0039] A rotating speed sensor 3 is arranged at the lateral position close to the speed measuring wheel 24, and the rotating speed sensor 3 is fixedly connected to the inner side wall of the anti-falling plate 2 through a positioning rod 31. The rotating speed sensor 3 directly detects the rotating speed of the speed measuring wheel 24 in real time.

[0040] A central processing module 4, a hydraulic driving rod 5, and a power supply module are sequentially arranged at the central position of the inner side wall of the anti-falling plate 2. The rotating speed sensor 3, the central processing module 4, the hydraulic driving rod 5, and the power supply module are electrically connected. The power supply module directly supplies power to the rotating speed sensor 3, the central processing module 4, and the hydraulic driving rod 5. When the rotating speed of the speed measuring wheel 24 is greater than the normal rotating speed of the basket, a signal is transmitted to the central processing module 4.

[0041] The central processing module 4 includes a signal conditioning circuit, an analog-to-digital converter, and a controller. The signal conditioning circuit amplifies the signal from the speed sensor 3, increasing the weak signal output by the sensor to a suitable amplitude for subsequent circuit processing. When the speed sensor 3 outputs an analog signal, it needs to be converted into a digital signal by the analog-to-digital converter for processing by the controller. The controller can receive the digital signal converted by the analog-to-digital converter, process it, and finally control the hydraulic drive rod 5 to work. This method is existing technology and will not be described in detail in this embodiment.

[0042] A sleeve frame 6 is symmetrically installed on the inner wall of the fall arrestor 2, near both sides of the hydraulic drive rod 5. A fall arrestor pin 61 is inserted into the head of the sleeve frame 6. One end of the fall arrestor pin 61 is located in the rectangular groove 13, and the shape of the fall arrestor pin 61 matches the positioning hole 15. A connecting plate 62 is welded to the other end of the fall arrestor pin 61. A limit spring 63 is installed between adjacent connecting plates 62. Strip plates 64 are symmetrically welded to opposite sides of the outer walls of both connecting plates 62. A round rod 65 is welded between the two strip plates 64 on the same side. A drive plate 66 is connected to the output end of the hydraulic drive rod 5. A triangular extrusion block 67 is symmetrically placed at the end of the drive plate 66, and the inclined surface of the triangular extrusion block 67 is close to the outer wall of the round rod 65. In the initial state (i.e., the construction hoist is working normally and the suspended platform has not fallen), if... Figures 7-10 As shown, the two triangular compression blocks 67, pushed by the hydraulic drive rod 5, press against the outer wall of the round rod 65 at an angle, causing the two anti-fall pins 61 to be inward relative to the sleeve frame 6. The limiting spring 63 is compressed by the two connecting plates 62 and has a rebound force. The two ends of the anti-fall pins 61 are located in the rectangular groove 13 and do not contact the anti-fall square tube 14. When the construction hoist malfunctions and the basket falls, the speed sensor 3 detects an instantaneous increase in the speed of the speed measuring wheel 24 and controls the hydraulic drive rod 5 to retract through the central processing module 4. The hydraulic drive rod 5 drives the two triangular compression blocks 67 to move towards one end of the anti-fall plate 2. The inclined area of ​​the triangular compression blocks 67, which was originally in contact with the outer wall of the round rod 65, separates from it. The compressed limiting spring 63 pushes the two anti-fall pins. 61 slides on the sleeve frame 6 and moves towards the anti-fall square tube 14. This movement is synchronized with the descent of the basket. When the basket falls to a certain height, the limit spring 63 pushes the anti-fall pin 61 into the positioning hole 15 and locks it in place. At this time, the anti-fall square tube 14 falls with the basket. The anti-fall square tube 14 slides down along the rectangular hole 12 and directly squeezes the buffer spring 17. Because the buffer spring 17 has a large elastic force, the compression of the buffer spring 17 buffers the impulse of the fall until the basket stops. Compared with traditional anti-fall devices, this method does not lock the position of the basket the moment the elevator falls unexpectedly. Instead, it slowly offsets the kinetic energy of the fall by compressing the spring, making the whole anti-fall process more gentle and reducing the accidental risk to the personnel in the basket.

[0043] In another embodiment, referring to Figures 1-10 , the top of the guide rail frame 1 is provided with a placing frame 7, the top of the placing frame 7 is provided with a winding roller 71, the inner wall of the winding roller 71 is provided with a positioning groove, a falling prevention rope 72 is embedded and fixed in the positioning groove, the falling prevention rope 72 is wound in the central position of the outer ring of the winding roller 71, the end of the falling prevention rope 72 is fixedly installed with a first cross rod 141, and the first cross rod 141 is fixedly installed on the top inner side wall of the falling prevention square tube 14. The winding length of the falling prevention rope 72 relative to the winding roller 71 is less than the length of the buffer spring 17. The falling prevention rope 72 is generally made of metal material with high tensile strength and is not easy to deform. When the hanging basket falls, based on the above, the falling prevention rope 72 will be lowered synchronously during the sliding process of the falling prevention square tube 14. The falling prevention rope 72 is separated from the winding roller 71 during the lowering process. When the falling prevention rope 72 is completely separated from the winding roller 71, the falling prevention rope 72 is completely straightened and locks the position of the falling prevention square tube 14. This way can reduce the excessive compression of the buffer spring 17 and improve the service life of the buffer spring 17.

[0044] At the same time, the winding length of the falling prevention rope 72 relative to the winding roller 71 is not more than 1m, that is, the maximum stroke of the falling of the hanging basket is not more than 1m.

[0045] Further, the end of the triangular extrusion block 67 is welded with a long strip plate 671, and an arc chamfer is formed at the connection between the long strip plate 671 and the triangular extrusion block 67. When the triangular extrusion block 67 is controlled to be recovered by the hydraulic drive rod 5, the long strip plate 671 directly displaces to the outer wall of the circular rod 65, preventing the triangular extrusion block 67 from being separated from the circular rod 65.

[0046] In actual construction, the cross sections of the falling prevention pin 61 and the positioning hole 15 are square, and the size of the falling prevention pin 61 is smaller than that of the positioning hole 15. In this case, when the falling prevention pin 61 is pushed into the positioning hole 15 by the limiting spring 63, the two are more easily fitted.

[0047] As shown in Figures 1-3 , the inner side wall of the falling prevention plate 2 is symmetrically provided with a second cross rod 21, the end of the second cross rod 21 is provided with an arc positioning plate 22, and the arc positioning plate 22 is inserted into the outer side wall of the guide rail frame 1. The arc positioning plate 22 can slide on the outer side of the guide rail frame 1, increasing the overall stability during the buffering and stopping process of the hanging basket in case of accidental falling, and is not easy to shake horizontally.

[0048] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An intelligent anti-falling device of a construction hoist, comprising a guide rail frame (1), characterized in that: The guide rail frame (1) is fixedly installed on the construction ground, the guide rail frame (1) is fixed by four cylindrical poles along a rectangle, the lateral position of the guide rail frame (1) is provided with a falling prevention plate (2), the outer side of the falling prevention plate (2) is used for connecting with the hanging basket of the construction elevator, the inner side wall of the falling prevention plate (2) is symmetrically installed with a shaft rod (23) at the upper position, a speed measuring wheel (24) is installed at the end of the shaft rod (23), and the outer ring of the speed measuring wheel (24) is attached to the outer side of the guide rail frame (1); The guide rail frame (1) is fixedly installed on the construction ground, the guide rail frame (1) is fixed by four cylindrical poles along a rectangle, the lateral position of the guide rail frame (1) is provided with a falling prevention plate (2), the outer side of the falling prevention plate (2) is used for connecting with the hanging basket of the construction elevator, the inner side wall of the falling prevention plate (2) is symmetrically installed with a shaft rod (23) at the upper position, a speed measuring wheel (24) is installed at the end of the shaft rod (23), and the outer ring of the speed measuring wheel (24) is attached to the outer side of the guide rail frame (1); The lateral position close to the speed measuring wheel (24) is provided with a rotating speed sensor (3), and the rotating speed sensor (3) is fixedly connected with the inner side wall of the falling prevention plate (2) through a positioning rod (31), the inner side wall of the falling prevention plate (2) is sequentially provided with a central processing module (4), a hydraulic driving rod (5) and a power supply module at the central position, and the rotating speed sensor (3), the central processing module (4), the hydraulic driving rod (5) and the power supply module are electrically connected; The inner side wall of the falling prevention plate (2) and the two sides close to the hydraulic driving rod (5) are symmetrically installed with sleeve frames (6), the head of the sleeve frame (6) is inserted with a falling prevention pin (61), one end of the falling prevention pin (61) is located in the rectangular groove (13), and the falling prevention pin (61) and the positioning hole (15) are shape matched, the other end of the falling prevention pin (61) is welded with a connecting plate (62), a limiting spring (63) is installed between adjacent connecting plates (62), and the opposite surfaces of the outer side walls of the two connecting plates (62) are symmetrically welded with strip plates (64), and a circular rod (65) is welded between the two strip plates (64) of the same side, the output end of the hydraulic driving rod (5) is connected with a driving plate (66), the end of the driving plate (66) is symmetrically provided with a triangular extrusion block (67), and the inclined surface of the triangular extrusion block (67) is tightly close to the outer wall of the circular rod (65).

2. The intelligent anti-falling device of a construction hoist according to claim 1, characterized in that: The top of the guide rail frame (1) is provided with a placing frame (7), the top of the placing frame (7) is provided with a winding roller (71), the inner wall of the winding roller (71) is provided with a positioning groove, a falling prevention rope (72) is embedded and fixed in the positioning groove, the falling prevention rope (72) is wound on the outer ring of the winding roller (71) at the central position, the end of the falling prevention rope (72) is fixedly installed with a first horizontal rod (141), and the first horizontal rod (141) is fixedly installed on the top inner side wall of the falling prevention square tube (14), and the winding length of the falling prevention rope (72) relative to the winding roller (71) is less than the length of the buffer spring (17).

3. The intelligent anti-falling device of a construction hoist according to claim 1, characterized in that: The outer ring of the speed measuring wheel (24) is embedded with a silica gel pad sleeve, and a V-shaped groove is formed on the outer wall of the silica gel pad sleeve.

4. The intelligent anti-falling device of a construction hoist according to claim 1, characterized in that: The end of the triangular extrusion block (67) is welded with a long strip plate (671), and an arc chamfer is formed at the connection between the long strip plate (671) and the triangular extrusion block (67).

5. The intelligent anti-falling device of a construction hoist according to claim 1, characterized in that: The cross section of the anti-falling pin (61) and the positioning hole (15) is square, and the size of the anti-falling pin (61) is smaller than that of the positioning hole (15).

6. The intelligent anti-falling device of a construction hoist according to claim 1, characterized in that: The inner side wall of the anti-falling plate (2) is symmetrically provided with a second horizontal rod (21), the end of the second horizontal rod (21) is provided with a circular arc positioning plate (22), and the circular arc positioning plate (22) is inserted into the outer side wall of the guide rail frame (1).

7. The intelligent anti-falling device of a construction hoist according to claim 2, characterized in that: The winding length of the anti-falling rope (72) relative to the winding roller (71) is not greater than 1m.

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