A locking device for an elevator

Abstract

The application discloses a locking device for an elevator, comprising a mounting frame, a telescopic cylinder and a locking shaft, the telescopic cylinder is fixedly arranged on the mounting frame, the locking shaft is elastically arranged on the mounting frame in the axial direction, and the telescopic shaft of the telescopic cylinder is fixedly connected with the locking shaft through a connecting plate.In the application, the locking device for the elevator is adopted, the braking tendency of the locking shaft is kept through the elastic force in the normal working state, and the elastic reset of the locking shaft is triggered through pressure relief of the telescopic cylinder in the emergency, so that the emergency braking of the elevator is realized, personnel injury caused by abnormal falling or displacement of the elevator is avoided, and the locking device is suitable for high-risk scenes such as an automobile production line, a stereoscopic warehouse and heavy industry manufacturing, and the response speed is far higher than that of a traditional mechanical lock (depending on manual operation) and electromagnetic braking (power failure).

Description

Technical Field

[0001] This utility model relates to the field of lifting mechanism braking technology, and in particular to a locking device for lifting machines. Background Technology

[0002] In automotive production lines, elevators serve as crucial equipment for material transport and workstation transitions, making their safe operation paramount. However, existing elevators pose a risk of loss of control due to sudden malfunctions or emergencies, potentially leading to safety accidents.

[0003] To address the aforementioned risks, traditional methods generally employ mechanical or electromagnetic locking devices. However, in emergency situations, mechanical or electromagnetic locking methods struggle to achieve rapid and reliable locking, posing safety hazards. Furthermore, traditional methods generally lack effective automated control, especially manual locking devices that rely on manual operation. Their locking effectiveness is easily affected by the operator's condition, leading to incomplete locking due to operational errors or negligence, which fails to meet the high safety and efficiency requirements of modern production lines. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a locking device for elevators that offers fast response and high safety.

[0005] To achieve the above objectives, this utility model is implemented through the following technical solution.

[0006] This application provides a locking device for an elevator, including a mounting frame, a telescopic cylinder, and a locking shaft;

[0007] The telescopic cylinder is fixedly mounted on the mounting frame and has a telescopic shaft. The locking shaft is elastically slidably mounted on the mounting frame along the axial direction and is fixedly connected to the telescopic shaft through a connecting plate.

[0008] The telescopic shaft and the locking shaft are parallel to each other. When the telescopic cylinder is pressurized, the telescopic shaft extends to drive the locking shaft to slide relative to the mounting frame. When the telescopic cylinder is depressurized, the locking shaft can reset under its own elastic force to perform locking.

[0009] Further specifying, in the aforementioned locking device for the elevator, the locking shaft and the telescopic cylinder are located on the same side of the connecting plate.

[0010] Further specifying, in the above-mentioned locking device for the elevator, two locking shafts are elastically slidably provided on the mounting frame, and the central axes of the two locking shafts are parallel;

[0011] Two telescopic cylinders are fixedly mounted on the mounting frame, and the telescopic shafts of the two telescopic cylinders are respectively fixedly connected to the locking shafts at corresponding positions through connecting plates.

[0012] Further specifying, the aforementioned locking device for the elevator further includes an elastic locking component fixedly mounted on the mounting frame, the elastic locking component being used to provide a spring force for the locking shaft to return to its original position when the telescopic shaft is extended.

[0013] Further specifying, in the above-mentioned locking device for the elevator, the elastic locking assembly includes a guide rod, a spring, and a positioning plate;

[0014] The guide rod is slidably connected to the connecting plate, and one end is fixedly connected to the mounting frame and the other end is fixedly connected to the positioning plate. The spring is sleeved on the guide rod, and both ends abut against the connecting plate and the positioning plate respectively.

[0015] When the telescopic shaft is extended, the spring is compressed to accumulate elastic potential energy.

[0016] Furthermore, the aforementioned locking device for the elevator further includes a sensing component for monitoring the position of the locking shaft.

[0017] Further specifying, in the aforementioned locking device for the elevator, the sensing component includes a sensor fixedly mounted on the mounting frame, the sensing end of the sensor corresponding to the position of the locking shaft.

[0018] Further specifying, in the above-mentioned locking device for the elevator, multiple sensors are provided on the mounting frame, and the multiple sensors are arranged at axial intervals along the corresponding locking shaft.

[0019] Further specifying, in the above-mentioned locking device for the elevator, the mounting frame includes a base and a support fixedly mounted on the base, and the locking shaft is elastically slidably mounted within the support.

[0020] The support base has a relief groove that runs radially through the locking shaft, and the sensor uses the relief groove to monitor the corresponding position of the locking shaft.

[0021] Further specifying, in the above-mentioned locking device for the elevator, the mounting frame further includes a protective cover fixedly mounted on the base, the telescopic cylinder and / or guide rod fixedly mounted on the protective cover, and the connecting plate and elastic locking assembly located inside the protective cover.

[0022] This utility model has at least the following beneficial effects:

[0023] 1. Under normal working conditions, the locking shaft maintains its braking tendency through elastic force. In an emergency, the locking shaft is elastically reset by the pressure relief of the telescopic cylinder, thereby achieving emergency braking of the elevator and avoiding personal injury caused by abnormal fall or displacement of the elevator. It is suitable for high-risk scenarios such as automobile production lines, automated warehouses, and heavy manufacturing. At the same time, the response speed is far superior to that of traditional mechanical locks (which rely on manual operation) and electromagnetic brakes (which fail when power is off), further improving the safety performance of the elevator.

[0024] 2. The locking shaft and telescopic cylinder are located on the same side of the connecting plate, so that the telescopic shaft and the locking shaft overlap in the axial direction, which can improve the overall compactness of the locking device, reduce its space occupation, and facilitate installation and maintenance in the working environment.

[0025] 3. Emergency braking of the locking shaft is achieved by releasing the elastic potential energy of the spring. The pure mechanical transmission structure not only has a fast response speed, but is also less affected by external factors, further improving the reliability of emergency braking. Attached Figure Description

[0026] Figure 1 This is a three-dimensional structural diagram of the locking device used in an elevator according to an embodiment of this application;

[0027] Figure 2 This is a front view schematic diagram of a locking device for an elevator according to an embodiment of this application;

[0028] Figure 3 This is a left-side schematic diagram of a locking device for an elevator according to an embodiment of this application;

[0029] Figure 4 This is a top view schematic diagram of a locking device for an elevator according to an embodiment of this application;

[0030] Figure 5 This is an enlarged schematic diagram of the "elastic locking component" in the locking device for an elevator according to an embodiment of this application.

[0031] Figure Labels

[0032] 110. Base; 120. Support seat; 121. Clearance groove; 130. Protective cover; 140. Sensor bracket; 200. Telescopic cylinder; 210. Telescopic shaft; 230. Connecting plate; 300. Sensor; 400. Locking shaft; 500. Elastic locking assembly; 510. Guide rod; 520. Spring; 530. Positioning plate. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0034] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0035] The locking device for elevators provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0036] This application provides a locking device for an elevator, such as... Figures 1 to 5 As shown, it includes a mounting frame, a telescopic cylinder 200, and a locking shaft 400.

[0037] The telescopic cylinder 200 is fixedly mounted on the mounting frame and has a telescopic shaft 210. The locking shaft 400 is elastically slidably mounted on the mounting frame along the axial direction and is fixedly connected to the telescopic shaft 210 through a connecting plate 230.

[0038] The locking shaft 400 and the telescopic cylinder 200 are located on the same side of the connecting plate 230, and the telescopic shaft 210 is parallel to the central axis of the locking shaft 400.

[0039] When the telescopic cylinder 200 is pressurized, the telescopic shaft 210 extends to drive the locking shaft 400 to slide relative to the mounting frame. When the telescopic cylinder 200 is depressurized, the locking shaft 400 can reset under its own elastic force to perform locking and braking.

[0040] Under normal operating conditions, the telescopic cylinder 200 maintains a pressurized state, meaning the telescopic shaft 210 remains extended. At this time, the locking shaft 400 maintains a predetermined distance from the elevator guide rail, and the locking shaft 400 tends to move closer to the elevator guide rail under its own elastic force. When an emergency occurs in the elevator, the telescopic cylinder 200 quickly releases pressure, and the locking shaft 400 moves closer to the elevator guide rail under its own elastic force. As a result, the locking block on the locking shaft 400 (not shown in the figure, but fixedly mounted on the locking shaft 400) abuts against the elevator guide rail, thereby achieving friction braking of the elevator.

[0041] It should be noted that the braking method of the locking shaft 400 is not limited to the one mentioned above. For example, when the locking shaft 400 is elastically reset, it can also be set to engage with the locking hole or locking groove on the elevator guide rail for braking. As long as the elevator can be braked by the reset of the locking shaft 400, it will not be elaborated here.

[0042] In this embodiment, the locking device for the elevator described above is used. Under normal working conditions, the locking shaft 400 is kept in a braking tendency by elastic force. In an emergency, the locking shaft 400 is elastically reset by the pressure relief of the telescopic cylinder 200, thereby achieving emergency braking of the elevator and avoiding personnel injury caused by abnormal fall or displacement of the elevator. It is suitable for high-risk scenarios such as automobile production lines, automated warehouses, and heavy manufacturing. At the same time, the response speed is far greater than that of traditional mechanical locks (which rely on manual operation) and electromagnetic brakes (which fail when power is off), further improving the safety performance of the elevator.

[0043] On the other hand, the locking shaft 400 and the telescopic cylinder 200 are located on the same side of the connecting plate 230, so that the telescopic shaft 210 and the locking shaft 400 overlap in the axial direction, which can improve the overall compactness of the locking device, reduce its space occupation, and facilitate installation and maintenance in the working environment.

[0044] In a preferred embodiment, such as Figures 1 to 5 As shown, two locking shafts 400 are elastically slidable on the mounting frame, and the central axes of the two locking shafts 400 are parallel.

[0045] Two telescopic cylinders 200 are fixedly installed on the mounting frame. The telescopic shafts 210 of the two telescopic cylinders 200 are respectively fixedly connected to the locking shafts 400 at the corresponding positions through the connecting plate 230.

[0046] In a preferred embodiment, such as Figures 2 to 5 As shown, it also includes an elastic locking assembly 500 fixedly mounted on the mounting frame. The elastic locking assembly 500 is used to provide a spring force for the locking shaft 400 to return to its original position when the telescopic shaft 210 is extended.

[0047] In a preferred embodiment, such as Figures 2 to 5 As shown, the elastic locking assembly 500 includes a guide rod 510, a spring 520, and a positioning plate 530.

[0048] The guide rod 510 is slidably connected to the connecting plate 230, and one end is fixedly connected to the mounting frame and the other end is fixedly connected to the positioning plate 530. The spring 520 is sleeved on the guide rod 510, and both ends abut against the connecting plate 230 and the positioning plate 530 respectively.

[0049] In the case where the telescopic shaft 210 is extended, the spring 520 is compressed to accumulate elastic potential energy.

[0050] Understandably, when the telescopic cylinder 200 builds pressure and the telescopic shaft 210 extends, the connecting plate 230 slides relative to the guide rod 510. At this time, the distance between the connecting plate 230 and the positioning plate 530 is shortened, and the spring 520 is compressed to accumulate elastic potential energy. When the guide rod 510 is depressurized, the elastic potential energy of the spring 520 is released, thereby driving the locking shaft 400 to reset and execute the lifting mechanism braking.

[0051] In this embodiment, the locking device for the elevator described above is used to achieve emergency braking of the locking shaft 400 by releasing the elastic potential energy of the spring 520. The pure mechanical transmission structure not only has a fast response speed, but is also less affected by external factors, further improving the reliability of emergency braking.

[0052] In a preferred embodiment, such as Figures 1 to 4 As shown, it also includes a sensing component for position monitoring of the locking shaft 400.

[0053] In a preferred embodiment, such as Figures 1 to 4 As shown, the sensing component includes a sensor 300 fixedly mounted on the mounting frame, and the sensing end of the sensor 300 corresponds to the position of the locking shaft 400.

[0054] In a preferred embodiment, such as Figures 1 to 4 As shown, multiple sensors 300 are provided on the mounting frame, and the multiple sensors 300 are arranged at axial intervals along the corresponding locking shaft 400.

[0055] In a preferred embodiment, the sensor 300 is configured as a displacement sensor, and the locking state of the sensor 300 is determined by monitoring the stroke of the locking shaft 400.

[0056] In a preferred embodiment, such as Figures 1 to 5 As shown, the mounting frame includes a base 110 and a support 120 fixedly mounted on the base 110, and the locking shaft 400 is elastically slidably mounted in the support 120.

[0057] In a preferred embodiment, a linear bearing is provided between the locking shaft 400 and the support base 120.

[0058] In a preferred embodiment, such as Figures 1 to 4 As shown, a relief groove 121 is provided on the support base 120 radially through the locking shaft 400, and the sensing end of the sensor 300 passes through the relief groove 121 to perform monitoring of the corresponding position of the locking shaft 400.

[0059] In a preferred embodiment, such as Figures 1 to 5 As shown, the mounting frame also includes a protective cover 130 fixedly mounted on the base 110, and a guide rod 510 and / or a telescopic cylinder 200 fixedly mounted on the protective cover 130.

[0060] The protective cover 130 is installed on the connecting plate 230 and the elastic locking component 500 to protect the corresponding area and prevent damage to the internal structure during use.

[0061] In a preferred embodiment, such as Figures 1 to 4 As shown, the mounting frame also includes a sensing bracket 140 fixedly mounted on the base 110, and the sensor 300 is fixedly mounted on the sensing bracket 140.

[0062] In a preferred embodiment, the telescopic cylinder 200 is specifically configured as a pneumatic cylinder or a hydraulic cylinder.

[0063] It is understandable that as long as the pressure build-up and pressure release of the telescopic cylinder 200 can be used to control the movement of the 300, it will not be elaborated here.

[0064] It should be noted that, in this document, 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 a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0065] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A locking device for an elevator, characterized in that, Includes a mounting frame, a telescopic cylinder (200), and a locking shaft (400); The telescopic cylinder (200) is fixedly mounted on the mounting frame and has a telescopic shaft (210). The locking shaft (400) is elastically slidably mounted on the mounting frame along the axial direction and is fixedly connected to the telescopic shaft (210) through a connecting plate (230). The telescopic shaft (210) is parallel to the central axis of the locking shaft (400). When the telescopic cylinder (200) is pressurized, the telescopic shaft (210) extends to drive the locking shaft (400) to slide relative to the mounting frame. When the telescopic cylinder (200) is depressurized, the locking shaft (400) can reset under its own elastic force to perform locking.

2. The locking device for an elevator according to claim 1, characterized in that, The locking shaft (400) and the telescopic cylinder (200) are located on the same side of the connecting plate (230).

3. The locking device for an elevator according to claim 1 or 2, characterized in that, Two locking shafts (400) are elastically slidably provided on the mounting frame, and the central axes of the two locking shafts (400) are parallel; Two telescopic cylinders (200) are fixedly mounted on the mounting frame. The telescopic shafts (210) of the two telescopic cylinders (200) are respectively fixedly connected to the locking shafts (400) at the corresponding positions through connecting plates (230).

4. The locking device for an elevator according to claim 1, characterized in that, It also includes a resilient locking assembly (500) fixedly mounted on the mounting frame, the resilient locking assembly (500) being used to provide a spring force for the locking shaft (400) to return to its original position when the telescopic shaft (210) is extended.

5. The locking device for an elevator according to claim 4, characterized in that, The elastic locking assembly (500) includes a guide rod (510), a spring (520), and a positioning plate (530); The guide rod (510) is slidably connected to the connecting plate (230), and one end is fixedly connected to the mounting frame and the other end is fixedly connected to the positioning plate (530). The spring (520) is sleeved on the guide rod (510), and both ends abut against the connecting plate (230) and the positioning plate (530) respectively. When the telescopic shaft (210) is extended, the spring (520) is compressed to accumulate elastic potential energy.

6. The locking device for an elevator according to claim 1, characterized in that, It also includes a sensing component for position monitoring of the locking shaft (400).

7. The locking device for an elevator according to claim 6, characterized in that, The sensing component includes a sensor (300) fixedly mounted on the mounting frame, and the sensing end of the sensor (300) corresponds to the position of the locking shaft (400).

8. The locking device for an elevator according to claim 7, characterized in that, Multiple sensors (300) are provided on the mounting frame, and the multiple sensors (300) are arranged at axial intervals along the corresponding locking shafts (400).

9. The locking device for an elevator according to any one of claims 4 to 8, characterized in that, The mounting frame includes a base (110) and a support seat (120) fixedly mounted on the base (110), and the locking shaft (400) is elastically slidably mounted in the support seat (120); The support base (120) is provided with a relief groove (121) that runs radially through the locking shaft (400), and the sensor (300) uses the relief groove (121) to monitor the locking shaft (400) at the corresponding position.

10. The locking device for an elevator according to claim 9, characterized in that, The mounting frame also includes a protective cover (130) fixedly mounted on the base (110), the telescopic cylinder (200) and / or the guide rod (510) fixedly mounted on the protective cover (130), and the connecting plate (230) and the elastic locking assembly (500) located inside the protective cover (130).

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