A lifting device with intelligent alarm function and a lifting method

Abstract

The application discloses a hoisting device with an intelligent alarm function and a hoisting method, and relates to the technical field of hoisting devices. The hoisting device comprises a main body, a sub-wire and a bus wire which are sequentially connected to the lower end of the main body, and the sub-wire and the bus wire are connected through a movable pulley set. The sub-wire passes through the movable pulley set, the bus wire is connected with the movable pulley set, the lower end of the bus wire is provided with an adjusting platform, the adjusting platform is connected with goods, the movable pulley set is internally provided with an alarm element, the upper and lower ends of the adjusting platform are both horizontally arranged, and the lower end plane of the adjusting platform is connected with the goods. The application timely fixes the broken sub-wire through the limiting tube and the internal structure thereof, avoids the separation between the goods and the hoisting device, timely reduces the tension required to be borne by the broken sub-wire through the adjusting platform and the internal structure thereof, evenly distributes the excess tension to other groups of sub-wires, and improves the safety degree of the device during use.

Description

Technical Field

[0001] This invention relates to the field of lifting device technology, specifically to a lifting device and lifting method with intelligent alarm function. Background Technology

[0002] Currently, a crane refers to a multi-action lifting machine that vertically lifts and horizontally moves heavy objects within a certain range. With the rapid development of my country's economy, cranes are widely used in various fields. Some lifting equipment has the characteristic of intermittent movement, that is, the corresponding mechanisms for actions such as picking up, moving, and unloading materials work alternately in a work cycle. As a result, cranes are becoming more and more widely used in the market.

[0003] Existing lifting devices that use steel cables as connecting structures mostly use a single steel cable as the working cable. This inevitably leads to friction with the contacting mechanism, causing wear and tear on the surface of the steel cable over a long period of use. The wear is uneven, and the steel cable is under high-intensity working conditions for a long time, which can easily cause it to break, resulting in the falling and damage of goods. This can seriously endanger the personal safety of nearby workers. Summary of the Invention

[0004] The purpose of this invention is to provide a lifting device and lifting method with intelligent alarm function to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a lifting device with intelligent alarm function, comprising a main body, wherein a sub-line and a main line are connected sequentially at the lower end of the main body, the sub-line and the main line are connected by a movable pulley group, the sub-line passes through the movable pulley group, the main line is connected to the movable pulley group, and an adjustment platform is provided at the lower end of the main line, wherein the adjustment platform is connected to the cargo; The movable pulley block is equipped with an alarm element. The upper and lower ends of the adjustment platform are both horizontally set, and the lower plane of the adjustment platform is connected to the cargo. The main body is a lifting device, and the sub-line is connected to the lifting device. The sub-line needs to pass through the movable pulley block so that the sub-line forms a V-shaped structure. The upper end of the sub-line is connected to the lifting device, and both ends of the sub-line are connected to a retraction mechanism. The retraction mechanism is used to control the retraction and extension of the sub-line, thereby controlling the lifting and lowering of the cargo. The lifting device is equipped with a moving mechanism, which is used to drive the cargo to move horizontally after hoisting. The main line is connected to the movable pulley block, but not directly to the sub-line. The lower end of the main line is connected to an adjustment platform, which is connected to the cargo. The diameter of the main line is larger than that of the sub-line. After the cargo is connected to the adjustment platform, the main body can control the gathering mechanism and the moving mechanism to control the lifting and horizontal movement of the cargo.

[0006] Furthermore, the movable pulley assembly includes two sets of limiting tubes and a movable wheel. A fixed sleeve and a movable rod are provided between the two sets of limiting tubes and the movable wheel. The fixed sleeve and the movable rod are connected by a spring. A limiting component is provided at the upper end of the movable rod, and the limiting component is connected to the limiting tube. The limiting component cooperates with the limiting tube to fix the sub-line. The movable wheel is a movable pulley inside the movable pulley assembly. A fixed sleeve and a movable rod are provided at the upper end of the movable wheel. The movable rod is rotatably connected to the movable wheel, and the fixed sleeve and the movable rod are slidably connected. Limiting tubes are provided on both sides of the fixed sleeve, and the limiting tubes are connected to the fixed sleeve. As the line passes through the movable pulley block, it needs to pass through the limiting tubes in sequence, then under the movable wheel, and then through another limiting tube. An alarm element is installed inside each limiting tube. A spring is installed between the fixed sleeve and the movable rod, and the spring is always in a compressed state, causing the movable rod to always have a downward tendency under the action of the spring. Since the fixed sleeve is connected to the main line, and the movable rod is connected to the sub-line through the movable wheel, the sub-line provides upward power to the movable wheel. Therefore, during the hoisting process, the fixed sleeve always has a downward tendency relative to the movable rod, and the area between the fixed sleeve and the movable rod is in a compressed state.

[0007] Furthermore, the upper inner diameter of the limiting tube is smaller than the lower inner diameter of the limiting tube. The limiting tube contains several annularly distributed clamps and springs. A through groove is formed in the middle of each clamp, and a ring is formed inside the through groove. The ring is connected to the limiting component. Protruding posts are formed at both ends of the ring, penetrating the limiting tube. A sliding groove is formed on the limiting tube to allow the protruding posts to move. When the sub-line passes through the limiting tube, it is located in the middle of the annularly distributed clamps. Both the clamps and springs are inclined, and the clamps are slidably connected to the limiting tube. The inclination angle of the clamps relative to the central axis of the limiting tube is greater than the inclination angle of the springs relative to the central axis of the limiting tube. During hoisting, the positional relationship between the fixed sleeve and the movable rod is such that the upper distance between the two opposing clamping plates is greater than the lower distance between the two opposing clamping plates, and the upper distance between the two opposing clamping plates is greater than the outer diameter of the sub-line. Secondly, the inner diameter of the limiting tube is set so that the clamping plates and springs are located below the limiting tube in the idle state, and the spring is in a compressed state. The movable rod drives the ring to be located above the through groove through the protruding column. The distance between the two opposing clamping plates is maximized. At this time, there is no direct contact between the two opposing clamping plates and the sub-line, and the sub-line can pass directly through the limiting tube. When the lead wire on one side of the movable wheel breaks, the upward force provided by the lead wire to the movable wheel and movable rod disappears instantly. At this moment, the elastic potential energy stored in the spring is released instantaneously. That is, the spring drives the protruding post and the ring to descend relative to the limiting tube through the movable rod. The ring descends synchronously inside the through groove of the clamping plate. Since the clamping plate is inclined, and the through groove is also inclined, when the ring descends vertically inside the through groove, the ring will drive the ring-shaped clamping plates to move closer to each other. That is, the distance between the two clamping plates will decrease until the outer wall of the clamping plate contacts the outer wall of the lead wire. The pressure between the clamping plate and the lead wire increases, thus creating a friction effect. At the same time, due to the breakage of the lead wire, the lead wire becomes a moving... The upward force provided by the pulley block disappears. Since the movable pulley block is connected to the cargo, the limiting tube descends relative to the sub-line. At this time, the clamping plate rises relative to the limiting tube under the action of friction. The sub-line drives the clamping plate to rise inside the limiting tube through friction. Due to the setting of the inner wall size of the limiting tube, there is a frustum-shaped through hole inside the limiting tube. The upper inner diameter of the limiting tube is smaller than the lower inner diameter of the limiting tube. This means that as the clamping plate moves upward, the distance between the two clamping plates will further decrease, and the friction effect between the clamping plate and the sub-line will further increase until the friction force generated by the clamping plate and the sub-line is greater than the pulling force of the cargo on the movable pulley block. At this time, the sub-line and the movable pulley block will be relatively fixed. The upper part of the limiting tube has a contact point. When the clamp rises higher than the specified length inside the limiting tube, the outer wall of the clamp will contact the contact point inside the limiting tube. The circuit connected to the contact point and the alarm element will change from an open circuit to a connected circuit. The alarm element will send an alarm signal to the main body to remind the operator that the sub-wire has broken and to indicate the location of the broken sub-wire, so that the operator can replace the sub-wire in time. Secondly, the surface of the clamp near the sub-wire is preferably equipped with a rubber sheet. The rubber sheet will increase the friction strength between the clamp and the sub-wire when they come into contact.

[0008] Furthermore, the limiting tube and the fixed sleeve are rotatably connected, the limiting tube is distributed on both sides of the fixed sleeve, the limiting component includes a limiting fork, the upper end of the movable rod is provided with limiting forks on both sides, and the limiting fork is slidably connected to the protruding column; when the sub-line on one side of the movable wheel breaks, after the limiting tube and the sub-line are relatively fixed, the sub-line passing through the limiting tube and the main line are not on the same straight line. At this time, under the action of the weight of the cargo, the main line drives the limiting tube to deflect relative to the fixed sleeve through the sub-line until the sub-line and the main line of the limiting tube are on the same straight line; The limiting components are designed so that during the deflection of the limiting tube relative to the fixed sleeve, the movable rod can still provide upward force to the protruding column and the ring through the limiting fork, so as to fix the limiting tube and the clamp to the sub-line.

[0009] Furthermore, several elongated grooves are provided below the limiting tube, and the lower end of the spring is located in the elongated grooves, with the lower end of the spring located outside the limiting tube. Since the inclination angle of the clamping plate relative to the central axis of the limiting tube is greater than the inclination angle of the spring relative to the central axis of the limiting tube, and the inclination angle of the clamping plate is the same as the inclination angle of the inner wall above the limiting tube, and since the lower end of the spring is located outside the limiting tube, and a sliding groove for the clamping plate to slide is provided on the inner wall of the limiting tube, the spring will drive the clamping plate to move downward when the spring is idle, that is, the two clamping plates are set opposite each other and move away from each other. In conjunction with the spring, movable rod, protruding column and ring, the clamping plate and the sub-line are separated from each other during the hoisting of the goods.

[0010] Furthermore, the adjustment platform includes an upper panel and a hydraulic assembly. The busbar is connected to the upper panel via the hydraulic assembly, which is used to adjust the distance between the connection point of the busbar and the upper panel and the center of the upper panel.

[0011] Furthermore, the hydraulic assembly is located above the upper panel. The upper end of the upper panel has several adjustment slots, one end of which is close to the center of the upper panel. A drive rod is installed inside the adjustment slot, and the end of the drive rod is connected to the busbar. Several sub-lines and busbar groups are installed on the upper panel. The tension provided by the sub-lines is greater than the weight of the goods themselves. Therefore, each sub-line needs to provide a fraction of the tension for the goods. The sub-lines on both sides of the movable wheel need to provide half of the fraction of the tension. When one of them breaks, the sub-line on one side of the movable wheel changes from providing half of the fraction of the tension to providing a fraction of the tension in a short time. This will further cause the sub-line on the remaining side of the movable wheel to break faster. At this time, the drive rod needs to control the connection between the busbar and the upper panel to move towards the center of the upper panel. Since the change in the tension required by the sub-line is fixed, that is, from half of the fraction of the tension to providing a fraction of the tension, the length of the feed point of the connection between the busbar and the upper panel inside the adjustment slot controlled by the drive rod is a fixed value. When the connection between the drive rod control bus and the upper panel moves closer to the center of the upper panel, the tension required by the broken sub-line will be less than a fraction of the tension, and the remaining tension will be shared by the other sub-lines.

[0012] Furthermore, the movable rod is formed by two sleeved circular tubes, with hydraulic oil inside each tube. The drive rod and the movable rod are connected via a hydraulic pipe. The structure of the movable rod, in conjunction with the drive rod, forms two hydraulic oil chambers connected by a pipe. When the movable rod is stretched under the action of the spring, the hydraulic oil inside the drive rod flows into the movable rod, causing the length of the drive rod to decrease. The connection between the busbar and the upper panel is connected to one end of the drive rod, while the other end of the drive rod is close to the center area of ​​the upper panel. As the length of the drive rod continuously decreases, the connection between the busbar and the upper panel continuously moves closer to the center area of ​​the upper panel.

[0013] A lifting method applied to a lifting device with an intelligent alarm function: The lifting method includes the following specific steps: S1. Connect the main body, sub-line, busbar, movable pulley block and adjustment platform; S2. Connect the adjustment platform to the cargo; S3. Main control of cargo transfer; S4. If any sub-line breaks during the transportation of goods, the movable pulley block is used to secure the broken sub-line in an emergency, and the alarm element will emit an alarm signal at the same time. S5. The goods are transferred to the designated location under the control of the main entity.

[0014] Step S1 includes the following specific steps: S101. Pass the sub-line through the movable pulley block, and then connect both ends of the sub-line to the main body; S102. Connect the busbar to the regulating platform; Step S3 includes the following specific steps: S301. The main body includes a retraction mechanism and a moving mechanism. The retraction mechanism is used to control the retraction and extension of the sub-line, thereby controlling the lifting and lowering of the goods. The moving mechanism is used to drive the goods to move horizontally after hoisting. Step S4 includes the following specific steps: S401. After the sub-line on one side of the movable wheel breaks, the sub-line on the other side of the movable wheel rises relative to the limit tube. S402, the movable rod descends relative to the fixed sleeve under the action of the spring, and the movable rod is connected to the protruding column and the ring through the limiting component; S403. The ring descends inside the through groove of the clamping plate, causing the clamping plates to move closer to each other until the outer wall of the clamping plate contacts the outer wall of the sub-line passing through the limiting tube. S404, the friction between the sub-line and the clamping plate caused by contact, which in turn caused the clamping plate to rise inside the limiting tube. Due to the setting of the inner wall structure of the limiting tube, the friction intensity between the sub-line and the clamping plate increases until the sub-line and the limiting tube are relatively fixed. S405, the clamp rises to connect with the contacts inside the limit tube, the circuit with the contacts and alarm element changes from the open circuit state to the connected state, and the alarm element after being powered on sends an alarm signal to the main body. S406. The movable rod is connected to the busbar and the adjustment platform via a hydraulic assembly. S407, the connection between the hydraulic component control bus and the regulating platform moves inside the regulating groove, and the direction of movement of the connection is the center of the regulating platform.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This lifting device with intelligent alarm function uses a pulley system and multiple sets of steel cables, which are divided into sub-lines and main lines. The pulley system distributes the weight of the goods to the sub-lines on both sides to reduce the intensity of the sub-lines during use, thereby reducing the frictional loss of the sub-lines in a single working process and extending the service life of the steel cables. 2. This lifting device with intelligent alarm function, through the setting of the limit tube, when the sub-line breaks, takes advantage of the instantaneous disappearance of the pressure generated by the sub-line on the movable wheel, and the relative sliding between the limit tube and the sub-line, and then uses the wedge structure to fix the sub-line and the limit tube in a short time, to prevent the pressure of other sub-lines from rising suddenly in a short time and causing the sub-lines to break one after another, thereby improving the safety of the device during use. 3. This lifting device with intelligent alarm function, through the setting of the adjustment platform, connects the movable rod and the drive rod through hydraulic pipelines. Thus, after the movable rod and spring lose the pressure generated by the sub-line, the hydraulic oil inside the drive rod enters the movable rod in a short time under the action of the spring, and at the same time pulls the connection between the busbar and the adjustment platform closer to the center of the adjustment platform, so as to reduce the tensile force required to break the sub-line. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the movable pulley block of the present invention; Figure 3 This is a schematic diagram of the main structure of the movable pulley block of the present invention; Figure 4 This is a top view of the movable pulley block structure of the present invention; Figure 5 This is a front view full sectional structural diagram of the movable pulley block of the present invention; Figure 6 This is a schematic diagram of the main view of the limiting tube structure of the present invention; Figure 7 This is the invention Figure 6 Enlarged structural diagram at point A in the middle; Figure 8 This is a top view of the adjustment platform structure of the present invention.

[0017] In the diagram: 1. Sub-line; 2. Busbar; 3. Movable pulley block; 4. Adjustment platform; 401. Top panel; 5. Limiting tube; 501. Clamping plate; 502. Spring; 503. Ring; 504. Protruding column; 6. Movable wheel; 601. Fixed sleeve; 602. Movable rod; 7. Limiting component; 701. Limiting fork; 8. Hydraulic component; 801. Adjusting groove; 802. Drive rod; 9. Spring. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-8 The present invention provides a technical solution: a lifting device with intelligent alarm function, comprising a main body, with a sub-line 1 and a busbar 2 connected sequentially at the lower end of the main body, the sub-line 1 and the busbar 2 being connected by a movable pulley group 3, the sub-line 1 passing through the movable pulley group 3, and the busbar 2 being connected to the movable pulley group 3. Multiple sets of steel cables are used, and the steel cables are divided into sub-lines 1 and main lines 2. The movable pulley group 3 distributes the weight of the goods to the sub-lines 1 on both sides to reduce the intensity of the sub-lines 1 during use, thereby reducing the frictional loss of the sub-lines 1 in a single working process and extending the service life of the steel cables. The movable pulley block 3 includes two sets of limiting tubes 5 and movable wheels 6. A fixed sleeve 601 and a movable rod 602 are provided between the two sets of limiting tubes 5 and movable wheels 6. The fixed sleeve 601 and the movable rod 602 are connected by a spring 9. A limiting component 7 is provided at the upper end of the movable rod 602. The limiting component 7 is connected to the limiting tubes 5 and cooperates with the limiting tubes 5 to fix the sub-line 1. The upper inner diameter of the limiting tube 5 is smaller than the lower inner diameter of the limiting tube 5. The limiting tube 5 is provided with several ring-shaped clamps 501 and springs 502. A through groove is opened in the middle of the clamp 501. A ring 503 is provided inside the through groove. The ring 503 is connected to the limiting component 7. A protruding post 504 is provided at both ends of the ring 503. The protruding post 504 passes through the limiting tube 5. A sliding groove is opened on the limiting tube 5 for the protruding post 504 to move. Several long grooves are provided below the limiting tube 5, and the lower end of the spring 502 is located in the long grooves and the lower end of the spring 502 is located outside the limiting tube 5. When sub-line 1 breaks, the pressure generated by sub-line 1 on the movable wheel 6 disappears instantly, and relative sliding occurs between the limiting tube 5 and sub-line 1. Then, the wedge structure is used to fix sub-line 1 and the limiting tube 5 in a short time, so as to avoid the sudden increase in pressure of other sub-lines 1 in a short time and the occurrence of continuous breakage of sub-lines 1, thereby improving the safety of this device during use. An adjustment platform 4 is provided at the lower end of busbar 2, and the adjustment platform 4 is connected to the cargo; The limiting tube 5 is rotatably connected to the fixed sleeve 601. The limiting tube 5 is distributed on both sides of the fixed sleeve 601. The limiting component 7 includes a limiting fork 701. The upper end of the movable rod 602 is provided with limiting forks 701 on both sides. The limiting fork 701 is slidably connected to the protruding column 504. The adjustment platform 4 includes an upper panel 401 and a hydraulic component 8. The busbar 2 is connected to the upper panel 401 through the hydraulic component 8. The hydraulic component 8 is used to adjust the distance between the connection point of the busbar 2 and the upper panel 401 and the center of the upper panel 401. The hydraulic component 8 is located above the upper panel 401. Several adjustment grooves 801 are provided at the upper end of the upper panel 401. One end of the adjustment groove 801 is close to the center of the upper panel 401. A drive rod 802 is provided inside the adjustment groove 801. The end of the drive rod 802 is connected to the busbar 2. The movable rod 602 is formed by two round tubes connected together. Hydraulic oil is installed inside the round tubes. The drive rod 802 is connected to the movable rod 602 through a hydraulic pipeline. The movable pulley block 3 is equipped with an alarm element. The upper and lower ends of the adjustment platform 4 are both horizontal, and the lower plane of the adjustment platform 4 is connected to the goods. Hydraulic pipes are used to connect the movable rod 602 and the drive rod 802. After the movable rod 602 and the spring 9 lose the pressure generated by the sub-line 1, the hydraulic oil inside the drive rod 802 enters the movable rod 602 in a short time under the action of the spring 9. At the same time, it pulls the connection between the busbar 2 and the adjustment platform 4 closer to the center of the adjustment platform 4, so as to reduce the tension required to break the sub-line 1.

[0020] A lifting method applied to a lifting device with an intelligent alarm function: The lifting method includes the following specific steps: S1. Connect the main body, sub-line 1, busbar 2, movable pulley block 3 and adjustment platform 4; S2. Connect the adjustment platform 4 to the cargo; S3. Main control of cargo transfer; S4. If any of the sub-line 1 breaks during the transportation of goods, the movable pulley block 3 is used to fix the broken sub-line 1 in an emergency, and at the same time the alarm element emits an alarm signal. S5. The goods are transferred to the designated location under the control of the main entity.

[0021] Step S1 includes the following specific steps: S101. Pass the sub-line 1 through the movable pulley block 3, and then connect both ends of the sub-line 1 to the main body; S102. Connect busbar 2 to regulating platform 4; Step S3 includes the following specific steps: S301. The main body includes a retraction mechanism and a moving mechanism. The retraction mechanism is used to control the retraction and extension of the sub-line 1, thereby controlling the lifting and lowering of the goods. The moving mechanism is used to drive the goods to move horizontally after hoisting. Step S4 includes the following specific steps: S401. After the sub-line 1 on one side of the movable wheel 6 breaks, the sub-line 1 on the other side of the movable wheel 6 rises relative to the limiting tube 5. S402, the movable rod 602 descends relative to the fixed sleeve 601 under the action of the spring 9, and the movable rod 602 is connected to the protruding post 504 and the ring 503 through the limiting component 7; S403 and the ring 503 descend inside the through groove of the clamping plate 501, causing the clamping plates 501 to move closer to each other until the outer wall of the clamping plate 501 contacts the outer wall of the sub-line 1 that passes through the limiting tube 5. The friction between S404, sub-line 1 and clamp 501 caused by contact leads to the clamp 501 rising inside the limiting tube 5. Due to the structure of the inner wall of the limiting tube 5, the friction intensity between sub-line 1 and clamp 501 increases until sub-line 1 and limiting tube 5 are relatively fixed. S405, the clamp 501 rises to connect with the contacts inside the limit tube 5, the circuit with the contacts and alarm element changes from the open circuit state to the connected state, and the alarm element after being powered on sends an alarm signal to the main body. S406, the movable rod 602 is connected to the busbar 2 and the adjusting platform 4 through the hydraulic assembly 8; S407, the connection between the hydraulic component 8 control bus 2 and the adjustment platform 4 moves inside the adjustment groove 801, and the direction of movement of the connection is the center of the adjustment platform 4.

[0022] Working principle of the invention: The main body is a lifting device. Sub-line 1 is connected to the lifting device. Sub-line 1 needs to pass through the movable pulley block 3 so that sub-line 1 forms a V-shaped structure. The upper end of sub-line 1 is connected to the lifting device, and both ends of sub-line 1 are connected to a retraction mechanism. The retraction mechanism is used to control the retraction and extension of sub-line 1, thereby controlling the lifting and lowering of the goods. The lifting device is equipped with a moving mechanism, which is used to drive the goods to move horizontally after hoisting. The main line 2 is connected to the movable pulley block 3, but not directly to the sub-line 1. The lower end of the main line 2 is connected to the adjustment platform 4, which is connected to the cargo. The diameter of the main line 2 is larger than the diameter of the sub-line 1. After the cargo is connected to the adjustment platform 4, the main body can control the gathering mechanism and the moving mechanism to control the lifting and horizontal movement of the cargo. The movable wheel 6 is a movable pulley inside the movable pulley block 3. A fixed sleeve 601 and a movable rod 602 are provided at the upper end of the movable wheel 6. The movable rod 602 is rotatably connected to the movable wheel 6, while the fixed sleeve 601 and the movable rod 602 are slidably connected. Limiting tubes 5 are provided on both sides of the fixed sleeve 601, and the limiting tubes 5 are connected to the fixed sleeve 601. When the sub-line 1 passes through the movable pulley block 3, it needs to pass through the limiting tubes 5 sequentially, then pass under the movable wheel 6, and then pass through another limiting tube 5. An alarm element is installed inside each limiting tube 5. A spring 9 is provided between the fixed sleeve 601 and the movable rod 602. The spring 9 is always in a compressed state, so that the movable rod 602 always has a downward movement tendency under the action of the spring 9. Since the fixed sleeve 601 is connected to the main line 2, and the movable rod 602 is connected to the sub-line 1 through the movable wheel 6, the sub-line 1 provides upward power to the movable wheel 6. Therefore, during the hoisting of the goods, the fixed sleeve 601 always has a downward movement tendency relative to the movable rod 602, and the fixed sleeve 601 and the movable rod 602 are in a compressed state. When the sub-line 1 passes through the limiting tube 5, the sub-line 1 is located in the middle of the ring-shaped clamp 501. Both the clamp 501 and the spring 502 are inclined, and the clamp 501 is slidably connected to the limiting tube 5. The inclination angle of the clamp 501 relative to the central axis of the limiting tube 5 is greater than the inclination angle of the spring 502 relative to the central axis of the limiting tube 5. When the cargo is being hoisted, the positional relationship between the fixed sleeve 601 and the movable rod 602 is such that the upper distance between the two opposing clamping plates 501 is greater than the lower distance between the two opposing clamping plates 501, and the upper distance between the two opposing clamping plates 501 is greater than the outer diameter of the sub-line 1. Secondly, the inner diameter of the limiting tube 5 is set so that the clamping plates 501 and the spring 502 are located below the limiting tube 5 when idle, and the spring 9 is in a compressed state. The movable rod 602 drives the ring 503 to be located above the through groove through the protruding column 504. The distance between the two opposing clamping plates 501 is maximized. At this time, there is no direct contact between the two opposing clamping plates 501 and the sub-line 1, and the sub-line 1 can directly pass through the limiting tube 5. When the sub-line 1 on one side of the movable wheel 6 breaks, the upward force provided by the sub-line 1 to the movable wheel 6 and the movable rod 602 disappears instantly. At this time, the elastic potential energy stored in the spring 9 will be released instantly. That is, the spring 9 drives the protruding post 504 and the ring 503 to descend relative to the limiting tube 5 through the movable rod 602. Simultaneously, the ring 503 descends inside the through groove of the clamping plate 501. Since the clamping plate 501 is inclined, that is, the through groove is also inclined. When the ring 503 descends vertically inside the through groove, the ring 503 will drive the ring-shaped clamping plates 501 to move closer to each other. That is, the distance between the two clamping plates 501 will decrease until the outer wall of the clamping plate 501 contacts the outer wall of the sub-line 1. The pressure between the clamping plate 501 and the sub-line 1 increases, resulting in a friction effect. At the same time, due to the sub-line 1 When the pulley breaks, the upward force provided by the sub-line 1 to the movable pulley block 3 disappears. Since the movable pulley block 3 is connected to the cargo, the limiting tube 5 descends relative to the sub-line 1. At this time, the clamping plate 501 rises relative to the limiting tube 5 under the action of friction. The sub-line 1 drives the clamping plate 501 to rise inside the limiting tube 5 through friction. Due to the setting of the inner wall size of the limiting tube 5, there is a frustum-shaped through hole inside the limiting tube 5. The upper inner diameter of the limiting tube 5 is smaller than the lower inner diameter of the limiting tube 5. This means that as the clamping plate 501 moves upward, the distance between the two clamping plates 501 will further decrease, and the friction effect between the clamping plate 501 and the sub-line 1 will further increase until the friction force generated by the clamping plate 501 and the sub-line 1 is greater than the pulling force of the cargo on the movable pulley block 3. At this time, the sub-line 1 and the movable pulley block 3 will be relatively fixed. The upper part of the limiting tube 5 is provided with a contact. When the clamp 501 rises higher than the specified length inside the limiting tube 5, the outer wall of the clamp 501 will contact the contact on the upper part of the limiting tube 5. The circuit connected to the contact and the alarm element will change from an open circuit state to a connected state. The alarm element will send an alarm signal to the main body. Secondly, the surface of the clamp 501 near the sub-line 1 is preferably provided with a rubber sheet. By providing the rubber sheet, the friction strength between the clamp 501 and the sub-line 1 will be increased when the clamp 501 contacts the sub-line 1. When the sub-line 1 on one side of the movable wheel 6 breaks, after the limiting tube 5 and the sub-line 1 are relatively fixed, the sub-line 1 passing through the limiting tube 5 and the main line 2 are not on the same straight line. At this time, under the action of the weight of the cargo, the main line 2 drives the limiting tube 5 to deflect relative to the fixed sleeve 601 through the sub-line 1 until the sub-line 1 and the main line 2 of the limiting tube 5 are on the same straight line. The limiting component 7 is designed so that during the deflection of the limiting tube 5 relative to the fixed sleeve 601, the movable rod 602 can still provide upward force to the protruding column 504 and the ring 503 through the limiting fork 701, so that the limiting tube 5 and the clamp 501 can fix the sub-line 1. Since the tilt angle of the clamping plate 501 relative to the central axis of the limiting tube 5 is greater than the tilt angle of the spring 502 relative to the central axis of the limiting tube 5, and the tilt angle of the clamping plate 501 is the same as the tilt angle of the inner wall above the limiting tube 5, and since the lower end of the spring 502 is located outside the limiting tube 5, and a sliding groove for the clamping plate 501 to slide is provided on the inner wall of the limiting tube 5, the spring 502 will drive the clamping plate 501 to move downward when the spring 502 is idle, that is, the two clamping plates 501 are set away from each other, and cooperate with the spring 9, the movable rod 602, the protruding column 504 and the ring 503 so that the clamping plate 501 and the sub-line 1 are separated from each other during the hoisting of the goods; The upper panel 401 is provided with several sub-lines 1 and a group of main lines 2. The tension provided by the sub-lines 1 is greater than the weight of the goods themselves. Therefore, each sub-line 1 needs to provide a certain fraction of the tension for the goods. The sub-lines 1 on both sides of the movable wheel 6 need to provide half of the certain fraction of the tension. When one of them breaks, the sub-line 1 on one side of the movable wheel 6 will change from providing half of the certain fraction of the tension to providing a certain fraction of the tension in a short time. This will further cause the sub-line 1 on the remaining side of the movable wheel 6 to break faster. At this time, the drive rod 802 needs to control the connection between the main line 2 and the upper panel 401 to move to the center of the upper panel 401. Since the change in the tension required by the sub-line 1 is fixed, that is, from half of the certain fraction of the tension to providing a certain fraction of the tension, the length of the feed point inside the adjustment groove 801 controlled by the drive rod 802 at the connection between the main line 2 and the upper panel 401 is a fixed value. When the connection between the drive rod 802 control bus 2 and the upper panel 401 moves closer to the center of the upper panel 401, the tension required by the broken sub-line 1 will be less than a fraction of the tension, and the remaining tension will be shared by the other sub-lines 1. The movable rod 602 is designed to form two hydraulic oil chambers with the drive rod 802. The two hydraulic oil chambers are connected by a pipe. When the movable rod 602 is stretched under the action of the spring 9, the hydraulic oil inside the drive rod 802 will flow into the movable rod 602, which will cause the length of the drive rod 802 to decrease. The connection between the busbar 2 and the upper panel 401 is connected to one end of the drive rod 802, and the other end of the drive rod 802 is close to the center area of ​​the upper panel 401. As the length of the drive rod 802 decreases, the connection between the busbar 2 and the upper panel 401 will continuously move closer to the center area of ​​the upper panel 401.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lifting device with intelligent alarm function, comprising a main body, characterized in that: The lower end of the main body is connected to a sub-line (1) and a main line (2) in sequence. The sub-line (1) and the main line (2) are connected by a movable pulley group (3). The sub-line (1) passes through the movable pulley group (3). The main line (2) is connected to the movable pulley group (3). An adjustment platform (4) is provided at the lower end of the main line (2). The adjustment platform (4) is connected to the cargo. The movable pulley block (3) is equipped with an alarm element. The upper and lower ends of the adjustment platform (4) are both horizontally set, and the lower plane of the adjustment platform (4) is connected to the goods. The movable pulley assembly (3) includes two sets of limiting tubes (5) and movable wheels (6). A fixed sleeve (601) and a movable rod (602) are provided between the two sets of limiting tubes (5) and movable wheels (6). The fixed sleeve (601) and the movable rod (602) are connected by a spring (9). A limiting component (7) is provided at the upper end of the movable rod (602). The limiting component (7) is connected to the limiting tubes (5). The limiting component (7) cooperates with the limiting tubes (5) to fix the sub-line (1).

2. The lifting device with intelligent alarm function according to claim 1, characterized in that: The upper inner diameter of the limiting tube (5) is smaller than the lower inner diameter of the limiting tube (5). The limiting tube (5) is provided with several ring-shaped clamps (501) and springs (502). A through groove is provided in the middle of the clamp (501). A ring (503) is provided inside the through groove. The ring (503) is connected to the limiting component (7). A protruding post (504) is provided at both ends of the ring (503). The protruding post (504) penetrates the limiting tube (5). A sliding groove is provided on the limiting tube (5) for the protruding post (504) to move.

3. A lifting device with intelligent alarm function according to claim 2, characterized in that: The limiting tube (5) is rotatably connected to the fixed sleeve (601). The limiting tube (5) is distributed on both sides of the fixed sleeve (601). The limiting component (7) includes a limiting fork (701). The upper end of the movable rod (602) is provided with limiting forks (701) on both sides. The limiting fork (701) is slidably connected to the protruding column (504).

4. A lifting device with intelligent alarm function according to claim 2, characterized in that: The lower part of the limiting tube (5) has several long grooves, the lower end of the spring (502) is located in the long grooves, and the lower end of the spring (502) is located outside the limiting tube (5).

5. A lifting device with intelligent alarm function according to claim 1, characterized in that: The adjustment platform (4) includes an upper panel (401) and a hydraulic component (8). The busbar (2) is connected to the upper panel (401) through the hydraulic component (8). The hydraulic component (8) is used to adjust the distance between the connection point of the busbar (2) and the upper panel (401) and the center of the upper panel (401).

6. A lifting device with intelligent alarm function according to claim 5, characterized in that: The hydraulic component (8) is located above the upper panel (401). The upper end of the upper panel (401) is provided with several adjustment grooves (801). One end of the adjustment groove (801) is close to the center of the upper panel (401). A drive rod (802) is provided inside the adjustment groove (801). The end of the drive rod (802) is connected to the busbar (2).

7. A lifting device with intelligent alarm function according to claim 6, characterized in that: The movable rod (602) is formed by two round tubes connected together. Hydraulic oil is installed inside the round tubes. The drive rod (802) and the movable rod (602) are connected through a hydraulic pipeline.

8. A lifting method for a lifting device with intelligent alarm function according to claim 2 or 7, characterized in that: The lifting method includes the following specific steps: S1. Connect the main body, sub-line (1), busbar (2), movable pulley block (3) and adjustment platform (4); S2. Connect the adjustment platform (4) to the cargo; S3. Main control of cargo transfer; S4. If any sub-line (1) breaks during the transportation of goods, the movable pulley block (3) is used to fix the broken sub-line (1) in an emergency, and the alarm element emits an alarm signal at the same time. S5. The goods are transferred to the designated location under the control of the main entity.

9. A lifting method for a lifting device with intelligent alarm function according to claim 8, characterized in that: Step S1 includes the following specific steps: S101. Pass the sub-line (1) through the movable pulley block (3), and then connect the two ends of the sub-line (1) to the main body; S102. Connect the busbar (2) to the regulating platform (4); Step S3 includes the following specific steps: S301. The main body includes a retraction mechanism and a moving mechanism. The retraction mechanism is used to control the retraction and extension of the sub-line (1), thereby controlling the lifting and lowering of the goods. The moving mechanism is used to drive the goods to move horizontally after hoisting. Step S4 includes the following specific steps: S401. After the sub-line (1) on one side of the movable wheel (6) breaks, the sub-line (1) on the other side of the movable wheel (6) rises relative to the limiting tube (5). S402, the movable rod (602) descends relative to the fixed sleeve (601) under the action of the spring (9), and the movable rod (602) is connected to the protruding post (504) and the ring (503) through the limiting component (7); S403, the ring (503) descends inside the through groove of the clamp (501), causing the clamps (501) to move closer to each other until the outer wall of the clamp (501) comes into contact with the outer wall of the sub-line (1) passing through the limiting tube (5); S404, the friction effect generated by the contact between the sub-line (1) and the clamp (501) causes the clamp (501) to rise inside the limiting tube (5). Due to the setting of the inner wall structure of the limiting tube (5), the friction intensity between the sub-line (1) and the clamp (501) increases until the sub-line (1) and the limiting tube (5) are relatively fixed. S405, the clamp (501) rises to connect with the contact inside the limit tube (5), the circuit with the contact and alarm element changes from the open circuit state to the connected state, and the alarm element after being powered on sends an alarm signal to the main body. S406, the movable rod (602) is connected to the busbar (2) and the adjusting platform (4) through the hydraulic assembly (8); S407, the connection between the hydraulic component (8) control bus (2) and the adjustment platform (4) moves inside the adjustment groove (801), and the direction of movement of the connection is the center of the adjustment platform (4).

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