Fork lifting device with anti-falling function and agv transport vehicle
By introducing a coordinated design of triggering, linkage, and braking components into the fork lifting device, emergency braking is achieved when the gripping mechanism stalls and falls, solving the safety hazards of existing devices in this situation and improving the safety and reliability of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGDONG SC INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-08-31
- Publication Date
- 2026-07-07
AI Technical Summary
Existing forklift lifting devices lack effective emergency braking measures when the gripping mechanism stalls and falls, leading to frequent safety accidents.
Design a forklift lifting device with anti-fall function, including a trigger, a linkage and a brake. Through the coordinated action of the linkage and the brake, the brake is quickly triggered when the gripping mechanism loses speed and falls, so as to prevent it from falling.
It improves the braking timeliness of the gripping mechanism, reduces the risk of falling, enhances the reliability and stability of the equipment, reduces the probability of failure, and ensures the safety of the transport vehicle and goods.
Smart Images
Figure CN224467489U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of transportation equipment technology, and in particular to a forklift lifting device with anti-fall function and an AGV transport vehicle. Background Technology
[0002] In automated warehousing and logistics systems, the application of automated material handling equipment such as AGVs is becoming increasingly widespread. As a key component of these devices, the performance of the forklift mechanism directly affects the efficiency and safety of cargo handling. Existing forklift mechanisms typically consist of a gripping mechanism and a drive mechanism. The drive mechanism drives the gripping mechanism to lift and lower, thereby gripping and releasing cargo. During actual operation, due to equipment failure, power outages, overloading, or external impacts, the gripping mechanism may stall and fall. Once this happens, it can not only damage the cargo but also cause serious injury to surrounding operators and equipment, leading to a safety accident. Utility Model Content
[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a forklift lifting device with anti-fall function, which can quickly trigger and achieve emergency braking when the gripping mechanism stalls and falls, effectively preventing the gripping mechanism from falling and improving the safety and reliability of equipment operation.
[0004] This utility model also proposes an AGV transport vehicle with the aforementioned forklift lifting device that has anti-fall function.
[0005] According to a first aspect of the present invention, a forklift device with anti-fall function includes a gripping mechanism and a drive mechanism for driving the gripping mechanism to rise and fall. The gripping mechanism is used to grip or release goods, and the drive mechanism is capable of driving the gripping mechanism to rise and fall. The gripping mechanism is connected to an anti-fall mechanism, which includes a trigger, a linkage, and a brake. The trigger is connected to the drive mechanism or the gripping mechanism and is triggered when the gripping mechanism stalls and falls, and can drive the linkage to move. The linkage is connected to the brake, and the linkage moves to drive the brake to move. The brake moves and locks the anti-fall mechanism to prevent the gripping mechanism from falling.
[0006] The forklift lifting device with anti-fall function according to the embodiments of this utility model has at least the following beneficial effects: The anti-fall mechanism, through the coordinated action of the trigger, linkage, and braking components, can quickly trigger the braking action at the moment the gripping mechanism stalls and falls. Compared with traditional anti-fall devices, it reduces intermediate links and response time, greatly improves the timeliness of braking, and effectively reduces the risk of the gripping mechanism falling. Furthermore, the anti-fall mechanism has a relatively simple structure, mainly composed of a trigger, linkage, and braking component, and the connection and transmission methods between the components are easy to implement and maintain. This simple structure not only reduces manufacturing costs but also improves the reliability and stability of the equipment, reducing the probability of failure. The trigger design can accurately sense the stall and fall of the gripping mechanism, avoiding malfunctions. At the same time, the transmission relationship between the linkage and braking components is reliable, ensuring that the action of the trigger can be accurately transmitted to the braking component, achieving a reliable braking effect. Even under high-load, high-frequency operating environments, it can maintain good working performance.
[0007] According to some embodiments of the present invention, the linkage includes a drive rod and a drive guide groove. The drive rod is connected to the trigger, the drive guide groove is disposed on the brake, and the drive rod abuts against the side wall of the drive guide groove and pushes the brake to move.
[0008] Alternatively, the drive rod is connected to the brake, the drive guide groove is disposed on the trigger, and the side wall of the drive guide groove abuts against the drive rod and pushes the brake to move.
[0009] According to some embodiments of the present invention, the drive guide groove is an elongated groove and is inclined along the moving direction of the brake member.
[0010] According to some embodiments of the present invention, the fall protection mechanism includes a housing connected to the gripping mechanism, the trigger, the linkage and the braking are all disposed in the housing, the housing has an opening through which the braking is moved, and the driving mechanism is connected to the trigger, thereby connecting and driving the gripping mechanism to move.
[0011] According to some embodiments of this utility model, the trigger is an elastic element. One end of the elastic element is connected to the output end of the drive mechanism, and the other end is connected to the linkage element. The elastic element is normally in a compressed or stretched state. When the gripping mechanism stalls and falls, the elastic element drives the linkage element to move, thereby driving the braking element to brake urgently.
[0012] According to some embodiments of this utility model, the driving mechanism includes a driving component and a movable component connected to the output end of the driving component. The movable component is a chain, wire rope, or belt, used to drive the gripping mechanism to lift and lower. The triggering component includes a connecting rod and an elastic component. One end of the elastic component is fixed to the connecting rod, and the other end is connected to the linkage component. The movable component causes the elastic component to be in a compressed state under normal conditions. When the movable component breaks or disengages from the driving component, the elastic component can drive the linkage component to move, thereby driving the braking component to move for braking.
[0013] According to some embodiments of the present invention, the housing includes two oppositely arranged fixing blocks, with an installation gap between the two fixing blocks to accommodate the connecting rod and the elastic element. The sidewalls of the fixing blocks are sequentially provided with a first limiting step and a second limiting step in the vertical direction. The elastic element is connected to a limiting plate, which can abut against the first limiting step to prevent the elastic element from being over-pressurized, and the limiting plate can abut against the second limiting step to prevent the elastic element from driving the braking element to detach from the housing.
[0014] Alternatively, the housing may be concentrically provided with an installation groove and a limiting groove. The installation groove is for mounting the connecting rod and accommodating the elastic element. The elastic element is connected to a limiting plate. The limiting plate can abut against the upper wall of the limiting groove to prevent the elastic element from being over-pressurized. The limiting plate can abut against the lower wall of the limiting groove to prevent the elastic element from driving the braking element to detach from the housing.
[0015] According to some embodiments of the present invention, the housing includes two opposing fixing blocks, and the two fixing blocks are further provided with limiting protrusions on their opposing sides. The bottom wall of the limiting protrusions abuts against the elastic member to prevent the elastic member from disengaging from the connecting rod. There is a clearance gap between the two limiting protrusions for the connection of the movable member.
[0016] According to some embodiments of the present invention, the braking component is a brake wedge, the brake wedge is provided with brake teeth, and a brake rack is vertically arranged at an adjacent position of the gripping mechanism. The brake wedge moves toward the brake rack to engage the brake rack.
[0017] According to a second aspect of the present invention, an AGV transport vehicle includes a forklift device with anti-fall function as described in any of the preceding claims.
[0018] The AGV transport vehicle according to the embodiments of this utility model has at least the following beneficial effects: During the operation of the AGV transport vehicle, the forklift device with anti-fall function can realize the lifting and lowering operation of goods according to the normal working procedure. When abnormal situations such as the gripping mechanism stalling and falling occur, the anti-fall mechanism of the forklift device with anti-fall function will realize emergency braking according to the principles in the above claims, ensuring the safety of the AGV transport vehicle and the goods. By applying the above-mentioned forklift device with anti-fall function, the safety and reliability of the AGV transport vehicle in the process of handling goods are improved. It can effectively prevent damage to goods and equipment failure caused by the falling of the gripping mechanism, reduce the probability of safety accidents, and reduce operating costs. At the same time, the various structural designs of the forklift device with anti-fall function can meet the needs of different types of AGV transport vehicles and have strong adaptability.
[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0021] Figure 1 This is a schematic diagram of a forklift device with anti-fall function according to an embodiment of the present utility model;
[0022] Figure 2 for Figure 1 A magnified view of a portion of point A in the middle;
[0023] Figure 3 This is a schematic diagram showing the connection between the anti-fall mechanism and the moving parts of the forklift device with anti-fall function according to an embodiment of the present utility model.
[0024] Figure 4 This is a schematic diagram of the internal structure of the anti-fall mechanism of the forklift lifting device with anti-fall function according to an embodiment of the present utility model.
[0025] Reference numerals: 100 for gripping mechanism; 200 for drive mechanism; 210 for drive component; 220 for movable component; 300 for fall protection mechanism; 310 for trigger component; 311 for connecting rod; 312 for elastic component; 313 for limiting plate; 320 for linkage component; 321 for drive rod; 322 for drive guide groove; 330 for braking component; 331 for brake wedge; 332 for brake tooth; 340 for housing; 341 for fixing block; 342 for installation gap; 343 for first limiting step; 344 for second limiting step; 345 for limiting protrusion; 346 for clearance gap; 400 for brake rack. Detailed Implementation
[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.
[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly. Those skilled in the art can reasonably determine the specific meaning of these terms in this utility model based on the specific content of the technical solution. In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In the description of this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0030] Reference Figure 1 , Figure 2, Figure 3 and Figure 4 This utility model proposes a forklift lifting device with anti-fall function, including a gripping mechanism 100 and a drive mechanism 200 for driving the gripping mechanism 100 to lift and lower. The gripping mechanism 100 is used to grip or release goods, and the drive mechanism 200 can drive the gripping mechanism 100 to lift and lower. The gripping mechanism 100 is connected to an anti-fall mechanism 300, which includes a trigger 310, a linkage 320, and a brake 330.
[0031] Specifically, the trigger 310 is connected to the drive mechanism 200 or the gripping mechanism 100 and is used to trigger when the gripping mechanism 100 stalls and falls. When the gripping mechanism 100 is rising and falling normally, the trigger 310 is in a relatively stable state; however, once the gripping mechanism 100 stalls and falls, the trigger 310 will be triggered due to factors such as the inertial force or speed change generated by the fall. After the trigger 310 is triggered, it can drive the linkage 320 to move. The linkage 320 and the trigger 310 are connected by a specific method, such as mechanical transmission or magnetic attraction, to ensure that the action of the trigger 310 can be accurately transmitted to the linkage 320.
[0032] Linkage component 320 connects to braking component 330. When linkage component 320 moves, it drives braking component 330 to move. The movement of braking component 330 can be linear motion, rotational motion, etc., depending on the overall design of the fall arrest mechanism 300. Braking component 330 moves and locks onto relevant components of the fall arrest mechanism 300, such as the guide rails and brackets of the fall arrest mechanism 300, thereby achieving emergency braking of the grabbing mechanism 100 and preventing it from continuing to fall.
[0033] Understandably, the fall arrestor 300, through the coordinated action of the trigger 310, linkage 320, and brake 330, can rapidly trigger braking action the instant the grabbing mechanism 100 stalls and falls. Compared with traditional fall arrestors, this reduces intermediate steps and response time, significantly improving braking timeliness and effectively reducing the risk of the grabbing mechanism 100 falling. Furthermore, the fall arrestor 300 has a relatively simple structure, mainly composed of the trigger 310, linkage 320, and brake 330, and the connection and transmission methods between these components are easy to implement and maintain. This simple structure not only reduces manufacturing costs but also improves the reliability and stability of the equipment, reducing the probability of malfunctions. The trigger 310 is designed to accurately detect the stall and fall of the grabbing mechanism 100, preventing malfunctions. Simultaneously, the reliable transmission relationship between the linkage 320 and brake 330 ensures that the action of the trigger 310 is accurately transmitted to the brake 330, achieving a reliable braking effect. Even under high-load, high-frequency operating environments, it maintains good performance.
[0034] It should be noted that forklift lifting devices with anti-fall function can be applied to different types of automated handling equipment, such as AGVs and stacker cranes, and have strong adaptability. By rationally designing the specific structure and connection method of the trigger 310, linkage 320 and braking 330, the usage requirements and working environment of different equipment can be met.
[0035] Reference Figure 3 and Figure 4 In this embodiment, the linkage 320 includes a drive rod 321 and a drive guide groove 322. The drive rod 321 is connected to the trigger member 310, and the drive guide groove 322 is disposed on the brake member 330. The drive rod 321 abuts against the side wall of the drive guide groove 322 and pushes the brake member 330 to move. Specifically, when the fork lifting device with anti-fall function is working normally, the trigger member 310 is in its initial position, and the drive rod 321 remains stationary with the trigger member 310. Since the drive rod 321 abuts against the side wall of the drive guide groove 322, the brake member 330 is also in a non-braking state. When the gripping mechanism 100 stalls and falls, the trigger member 310 actuates, driving the drive rod 321 to move. During the movement of the drive rod 321, the part of it that abuts against the side wall of the drive guide groove 322 will exert a force on the side wall of the drive guide groove 322. Since the drive guide groove 322 is set on the brake member 330, according to the principle of force transmission, this force will push the brake member 330 to move along the predetermined direction, thereby achieving braking.
[0036] In another embodiment, the drive rod 321 is connected to the brake member 330, and the drive guide groove 322 is disposed on the trigger member 310. The side wall of the drive guide groove 322 abuts against the drive rod 321 and pushes the brake member 330 to move. Specifically, under normal conditions, the trigger member 310 is fixed in position, the side wall of the drive guide groove 322 abuts against the drive rod 321, and the brake member 330 remains stationary. Once the gripping mechanism 100 stalls and falls, the trigger member 310 moves, and the drive guide groove 322 moves accordingly. The side wall of the drive guide groove 322 applies a force to the abutting drive rod 321. Since the drive rod 321 is connected to the brake member 330, this force will drive the brake member 330 to move, achieving the braking purpose.
[0037] Understandably, the design of this linkage 320 provides two different connection and transmission methods, increasing design flexibility and allowing for the selection of a suitable structure based on factors such as the actual equipment's spatial layout and transmission requirements. Simultaneously, through the cooperation of the drive rod 321 and the drive guide groove 322, the action of the trigger 310 can be accurately transmitted to the brake 330, achieving reliable braking linkage.
[0038] Reference Figure 4Furthermore, when the drive guide groove 322 is an elongated groove and is inclined along the moving direction of the brake 330, the drive rod 321 is connected to the trigger 310, and the drive guide groove 322 is inclined on the brake 330. When the gripping mechanism 100 is working normally, the drive rod 321 is in a relatively stable position within the drive guide groove 322. When the gripping mechanism 100 stalls and falls, the trigger 310 drives the drive rod 321 to move. Since the drive guide groove 322 is inclined, when the drive rod 321 moves within the drive guide groove 322, it will not only move along the length of the drive guide groove 322, but also generate a component force perpendicular to the side wall of the drive guide groove 322 due to the inclination angle. This component force will push the brake 330 to move more effectively, enabling the brake 330 to quickly and powerfully achieve the braking action. Understandably, the inclined elongated drive guide 322 can convert the linear movement of the trigger 310 into a more efficient and powerful movement of the brake 330, improving the braking response speed and braking effect. Compared with the straight drive guide 322, the inclined design can achieve greater braking displacement and braking force within a limited space, enhancing the reliability of the fall arrestor 300.
[0039] Reference Figure 3 The fall arrestor 300 includes a housing 340 connected to the gripping mechanism 100, and a trigger 310, a linkage 320, and a brake 330 all housed within the housing 340. The housing 340 has an opening through which the brake 330 can move. The drive mechanism 200 is connected to the trigger 310. For example, the drive mechanism 200 connects to the trigger 310 via a chain or wire rope. When the drive mechanism 200 operates, it moves the trigger 310, which in turn moves the brake 330 within the housing 340 via the linkage 320. However, due to the opening, the brake 330 can extend outside the housing 340 to engage with relevant braking components to achieve braking. Simultaneously, the drive mechanism 200 connects to and moves the gripping mechanism 100, enabling the gripping and lifting of goods. Integrating the trigger 310, linkage 320, and brake 330 within the housing 340 makes the fall arrestor 300 a relatively independent module, facilitating installation, maintenance, and replacement. The housing 340 protects the internal components from damage caused by external factors, thus improving the reliability and service life of the fall arrestor 300. Meanwhile, the well-designed openings ensure that the braking component 330 can function properly.
[0040] Specifically, the trigger element 310 is an elastic element 312. One end of the elastic element 312 is connected to the output end of the drive mechanism 200, and the other end is connected to the linkage element 320. Under normal conditions, the elastic element 312 is in a compressed or stretched state. For example, if the elastic element 312 is a spring, when the drive mechanism 200 is working normally, the spring is compressed or stretched, storing a certain amount of elastic potential energy. When the gripping mechanism 100 stalls and falls, the normal connection between the drive mechanism 200 and the gripping mechanism 100 is disrupted. At this time, the elastic element 312, having lost the constraint at one end, releases its elastic potential energy, causing the linkage element 320 to move. The linkage element 320 then drives the braking element 330 to move, thereby achieving braking. Using the elastic element 312 as the trigger element 310 results in a simple structure and low cost. The elastic element 312 can store energy under normal conditions and quickly release energy when braking is needed, achieving rapid trigger braking and improving the response speed of the fall arrestor 300. Moreover, the elastic element 312 has a certain buffering effect, which can reduce the impact force during braking and protect equipment components.
[0041] Furthermore, the drive mechanism 200 includes a drive component 210 and a movable component 220 connected to the output end of the drive component 210. The movable component 220 can be a chain, wire rope, or belt, used to drive the gripping mechanism 100 to lift and lower. The trigger component 310 includes a connecting rod 311 and an elastic component 312. One end of the elastic component 312 is fixed to the connecting rod 311, and the other end is connected to the linkage component 320. During normal operation, the movable component 220 is in a tensioned state, causing the elastic component 312 to be in a compressed state under normal conditions. When the movable component 220 breaks or disengages from the drive component 210, the constraint of the movable component 220 on the elastic component 312 disappears. Due to its own elastic restoring force, the elastic component 312 will drive the linkage component 320 to move, and the linkage component 320 will then drive the brake component 330 to move, causing the brake component 330 to lock the relevant components, thereby achieving braking.
[0042] Understandably, this structure can monitor the status of the moving part 220 in real time. When the moving part 220 experiences a malfunction such as breakage or detachment that could cause the gripping mechanism 100 to fall, it can trigger braking in a timely manner. Through the cooperation of the elastic element 312 and the connecting rod 311, the change in the status of the moving part 220 is converted into a braking action, improving the sensitivity of the fall protection mechanism 300 to malfunctions and the reliability of braking. At the same time, this design is applicable to various types of moving parts 220, exhibiting good versatility.
[0043] Reference Figure 3In this embodiment, the housing 340 includes two opposing fixing blocks 341, with an installation gap 342 between the two fixing blocks 341 to accommodate the connecting rod 311 and the elastic member 312. The sidewalls of the fixing blocks 341 are sequentially provided with a first limiting step 343 and a second limiting step 344 along the vertical direction. The elastic member 312 is connected to a limiting piece 313. During normal operation, the limiting piece 313 abuts against the first limiting step 343 to prevent the elastic member 312 from being over-compressed, ensuring the stability of the elastic member 312's performance. When braking is required, the elastic member 312 drives the linkage member 320 and the braking member 330 to move, and the limiting piece 313 moves accordingly. When it reaches a certain position, the limiting piece 313 abuts against the second limiting step 344 to prevent the elastic member 312 from continuing to move and causing the braking member 330 to detach from the housing 340, ensuring that the braking member 330 performs its braking function in the appropriate position.
[0044] In other embodiments, the housing 340 is concentrically provided with a mounting groove and a limiting groove. The mounting groove is for mounting the connecting rod 311 and accommodating the elastic element 312, which is connected to a limiting piece 313. During the operation of the elastic element 312, when the elastic element 312 is subjected to excessive pressure, the limiting piece 313 abuts against the upper wall of the limiting groove to prevent the elastic element 312 from being damaged by overpressure. When the elastic element 312 drives the brake element 330 to move during braking, the limiting piece 313 abuts against the lower wall of the limiting groove to prevent the brake element 330 from detaching from the housing 340, thus ensuring the effectiveness of braking.
[0045] By setting limiting steps or limiting grooves and limiting plates 313, the compression range of the elastic element 312 and the movement range of the braking element 330 can be precisely limited, preventing overpressure damage to the elastic element 312 and the braking element 330 from detaching from the housing 340, thus improving the stability and reliability of the fall arrest mechanism 300. At the same time, this limiting design is simple in structure and easy to implement and maintain.
[0046] Reference Figure 3In this embodiment, the housing 340 includes two opposing fixing blocks 341. Each fixing block 341 has a limiting protrusion 345 on one of its opposing sides. The bottom wall of the limiting protrusion 345 abuts against the elastic member 312, preventing the elastic member 312 from detaching from the connecting rod 311 during movement. A clearance gap 346 is provided between the two limiting protrusions 345 for the connection of the movable member 220. The movable member 220 can pass through this gap to connect with the drive mechanism 200 and the gripping mechanism 100 without affecting the normal operation of the drive mechanism 200. During the operation of the elastic member 312, the limiting protrusion 345 always limits the elastic member 312, ensuring a stable connection between the elastic member 312 and the connecting rod 311. The design of the limiting protrusion 345 further enhances the connection stability between the elastic member 312 and the connecting rod 311, preventing the elastic member 312 from detaching from the connecting rod 311 due to uneven force or excessive movement during braking, thus improving the reliability of the fall arrestor 300. Meanwhile, the clearance 346 ensures the normal connection and operation of the moving part 220 without affecting the overall function of the fork lifting device with anti-fall function.
[0047] Reference Figure 4 The braking component 330 is a brake wedge 331, which is equipped with brake teeth 332. A brake rack 400 is vertically positioned adjacent to the gripping mechanism 100. During normal operation, the brake wedge 331 and brake rack 400 are separated, allowing the gripping mechanism 100 to move freely up and down. When the gripping mechanism 100 stalls and falls, the trigger 310 and linkage 320 cause the brake wedge 331 to move towards the brake rack 400. The brake teeth 332 on the brake wedge 331 engage with the grooves of the brake rack 400. Since the brake rack 400 is fixed, the brake wedge 331 locks onto the brake rack 400, preventing the gripping mechanism 100 from falling further. This braking method, using the brake wedge 331 and brake rack 400, provides significant braking force through the engagement of the brake teeth 332 with the grooves, resulting in reliable braking. Furthermore, this structure is simple, easy to manufacture and install, and has a low cost. Meanwhile, the combination of the brake wedge 331 and the brake rack 400 can withstand a large load, making it suitable for handling equipment with different weights of goods.
[0048] Reference Figure 2 and Figure 3 It should be noted that there can be two or more brake wedges 331, with each or more brake wedges 331 arranged vertically to achieve graded contact, reduce single impact force, and lower braking noise and vibration. Furthermore, dual or multiple brake wedges 331 can distribute braking energy, preventing brake failure caused by localized overheating and extending brake life.
[0049] In some embodiments, the gripping mechanism 100 is a telescopic fork, and the drive mechanism 200 is driven by a hydraulic cylinder. The lifting and lowering of the gripping mechanism 100 is achieved by the extension and retraction of the hydraulic cylinder. The trigger 310 of the fall arrestor 300 is a speed sensor, installed on the output shaft of the drive mechanism 200, used to monitor the rotational speed of the drive mechanism 200 in real time. When the gripping mechanism 100 is lifting and lowering normally, the rotational speed detected by the speed sensor is within the normal range. Once the gripping mechanism 100 stalls and falls, the rotational speed of the drive mechanism 200 will increase sharply, and the speed sensor will send an electrical signal after detecting this abnormal change. The linkage 320 is an electromagnet, which is connected to the speed sensor through a circuit. When the speed sensor sends an electrical signal, the electromagnet is energized and generates magnetic force. The braking element 330 is a metal brake block, installed on the bracket of the fall arrestor 300, and positioned opposite the electromagnet. After the electromagnet is energized and generates magnetic force, it will attract the metal brake block, causing the metal brake block to move towards the electromagnet. During its movement, the metal brake block will come into contact with the guide rail of the fall arrest mechanism 300 and lock the guide rail by friction, thereby achieving emergency braking of the grabbing mechanism 100 and preventing it from continuing to fall.
[0050] In some embodiments, the gripping mechanism 100 is a common fork structure used for picking up goods; the drive mechanism 200 adopts a chain drive method driven by a motor, and the lifting and lowering of the gripping mechanism 100 is achieved by the forward and reverse rotation of the motor. The trigger 310 of the fall arrestor 300 is a mass block installed at the bottom of the gripping mechanism 100 and connected to the gripping mechanism 100 by a spring. Under normal working conditions, the spring force keeps the mass block in a relatively stable position. When the gripping mechanism 100 stalls and falls, the mass block will move downwards due to inertia, overcoming the spring force. The linkage 320 is a connecting rod, one end of which is connected to the mass block by a hinge, and the other end is connected to the brake 330. When the mass block moves downwards, it will drive the brake 330 to rotate around a fixed axis through the connecting rod. The brake 330 is a brake disc with friction pads, and there is a certain gap between the brake disc and the guide rail of the fall arrestor 300 under normal conditions. When the brake 330 rotates around the fixed axis, the brake disc will gradually approach the guide rail and make close contact with the guide rail. Because of the large friction between the friction pads on the brake disc and the guide rail, the brake disc locks and clamps the guide rail, thus achieving emergency braking of the gripping mechanism 100 and preventing it from continuing to fall.
[0051] This utility model also proposes an AGV transport vehicle, including a forklift device with anti-fall function as described in any of the preceding claims. The forklift device with anti-fall function is installed on the AGV transport vehicle, the drive mechanism 200 is connected to the AGV transport vehicle's power system, and the gripping mechanism 100 is used to grip and release goods. During the operation of the AGV transport vehicle, the forklift device with anti-fall function can perform lifting and lowering operations on goods according to the normal working procedure. When abnormal situations such as the gripping mechanism 100 stalling and falling occur, the anti-fall mechanism 300 of the forklift device with anti-fall function will perform emergency braking according to the principles in the preceding claims, ensuring the safety of the AGV transport vehicle and the goods. By applying the above-mentioned forklift device with anti-fall function, the safety and reliability of the AGV transport vehicle during the goods handling process are improved. It can effectively prevent damage to goods and equipment failure caused by the falling of the gripping mechanism 100, reduce the probability of safety accidents, and lower operating costs. At the same time, the various structural designs of this forklift device with anti-fall function can meet the needs of different types of AGV transport vehicles, exhibiting strong adaptability.
[0052] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. A forklift lifting device with anti-fall function, characterized in that, include: A gripping mechanism (100) and a drive mechanism (200) for lifting the gripping mechanism (100) up and down. The gripping mechanism (100) is used to grip or release goods, and the drive mechanism (200) is capable of driving the gripping mechanism (100) up and down. The gripping mechanism (100) is connected to a fall protection mechanism (300). The fall protection mechanism (300) includes a trigger (310), a linkage (320), and a brake (330). The trigger (310) is connected to the drive mechanism (200) or the gripping mechanism (100) and is triggered when the gripping mechanism (100) stalls and falls. It can also drive the linkage (320) to move. The linkage (320) is connected to the brake (330). The linkage (320) moves to drive the brake (330) to move. The brake (330) moves and locks the fall protection mechanism (300) to prevent the gripping mechanism (100) from falling.
2. The forklift device with anti-fall function according to claim 1, characterized in that, The linkage (320) includes a drive rod (321) and a drive guide groove (322). The drive rod (321) is connected to the trigger (310). The drive guide groove (322) is disposed on the brake (330). The drive rod (321) abuts against the side wall of the drive guide groove (322) and pushes the brake (330) to move. Alternatively, the drive rod (321) is connected to the brake (330), the drive guide groove (322) is disposed on the trigger (310), and the side wall of the drive guide groove (322) abuts against the drive rod (321) and pushes the brake (330) to move.
3. The forklift device with anti-fall function according to claim 2, characterized in that, The drive guide groove (322) is an elongated groove and is inclined along the moving direction of the brake (330).
4. The forklift device with anti-fall function according to claim 1, characterized in that, The fall arrestor (300) includes a housing (340) connected to the gripping mechanism (100). The trigger (310), the linkage (320), and the brake (330) are all disposed in the housing (340). The housing (340) has an opening through which the brake (330) moves. The drive mechanism (200) is connected to the trigger (310), thereby connecting to and driving the gripping mechanism (100) to move.
5. The fork lifting device with anti-fall function according to claim 4, characterized in that, The trigger (310) is an elastic element (312). One end of the elastic element (312) is connected to the output end of the drive mechanism (200), and the other end is connected to the linkage (320). The elastic element (312) is normally in a compressed or stretched state. When the gripping mechanism (100) stalls and falls, the elastic element (312) drives the linkage (320) to move, so as to drive the braking element (330) to brake urgently.
6. The forklift device with anti-fall function according to claim 5, characterized in that, The drive mechanism (200) includes a drive member (210) and a movable member (220) connected to the output end of the drive member (210). The movable member (220) is a chain, wire rope, or belt, used to drive the gripping mechanism (100) to lift. The trigger member (310) includes a connecting rod (311) and an elastic member (312). One end of the elastic member (312) is fixed to the connecting rod (311), and the other end is connected to the linkage member (320). The movable member (220) causes the elastic member (312) to be in a compressed state under normal conditions. When the movable member (220) breaks or disengages from the drive member (210), the elastic member (312) can drive the linkage member (320) to move, thereby driving the brake member (330) to move for braking.
7. The forklift device with anti-fall function according to claim 6, characterized in that, The housing (340) includes two opposing fixing blocks (341), with an installation gap (342) between the two fixing blocks (341) for accommodating the connecting rod (311) and the elastic member (312). The sidewalls of the fixing blocks (341) are provided with a first limiting step (343) and a second limiting step (344) in the vertical direction. The elastic member (312) is connected to a limiting piece (313). The limiting piece (313) can abut against the first limiting step (343) to prevent the elastic member (312) from being over-pressurized. The limiting piece (313) can abut against the second limiting step (344) to prevent the elastic member (312) from driving the braking member (330) to detach from the housing (340). Alternatively, the housing (340) may be concentrically provided with an installation groove and a limiting groove. The installation groove is for mounting the connecting rod (311) and accommodating the elastic member (312). The elastic member (312) is connected to a limiting piece (313). The limiting piece (313) can abut against the upper wall of the limiting groove to prevent the elastic member (312) from being over-pressurized. The limiting piece (313) can abut against the lower wall of the limiting groove to prevent the elastic member (312) from driving the braking member (330) to detach from the housing (340).
8. The forklift device with anti-fall function according to claim 7, characterized in that, The housing (340) includes two opposing fixing blocks (341), and the two fixing blocks (341) are also provided with limiting protrusions (345) on their opposing sides. The bottom wall of the limiting protrusions (345) abuts against the elastic member (312) to prevent the elastic member (312) from disengaging from the connecting rod (311). There is a clearance gap (346) between the two limiting protrusions (345) for the connection of the movable member (220).
9. The forklift device with anti-fall function according to claim 1, characterized in that, The braking component (330) is a braking wedge (331), the braking wedge (331) is provided with braking teeth (332), and the gripping mechanism (100) is vertically provided with a braking rack (400) at an adjacent position. The braking wedge (331) moves toward the braking rack (400) to engage the braking rack (400).
10. An AGV transport vehicle, characterized in that, Includes a forklift device with anti-fall function as described in any one of claims 1 to 9.