Transmission mechanism and elevator
By designing a transmission mechanism for locking wheels and locking components in the elevator, reliable mechanical locking is achieved in the event of a power failure, solving the problem of safety pin mechanism failure and improving the safety and reliability of the elevator.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU MINO AUTOMOTIVE EQUIP CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-01
AI Technical Summary
The safety pin mechanism of existing elevators is prone to failure in the event of a power failure, resulting in low reliability and safety, and inability to effectively lock the lifting tray.
Design a transmission mechanism including a locking wheel and a locking assembly. A safety pin is inserted into a pin hole and its rotation trajectory coincides with that of the locking part to achieve mechanical locking, avoiding the need for pin hole alignment and ensuring that locking can still be achieved in the event of a power failure.
This improves the reliability and safety of the elevator in case of malfunction, prevents locking failure, and ensures the safety of maintenance personnel.
Smart Images
Figure CN224185645U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of lifting equipment technology, and in particular to a transmission mechanism and a lifting machine. Background Technology
[0002] When a lift malfunctions or requires routine maintenance, manual operation is necessary. To prevent accidents, the lift's mechanical movement must be restricted before manual operation. Currently, the most common method is to lock the lift using a safety pin mechanism.
[0003] Currently, the safety pin mechanism used in elevators typically involves inserting a pin into a pin hole on the lifting platform and the column to lock the lifting platform in place. However, when the elevator experiences a power failure, the pin holes on the lifting platform and the column may not align. In this case, the safety pin mechanism fails, cannot mechanically lock the elevator, and cannot guarantee the safety of maintenance personnel, exhibiting low reliability and low safety. Utility Model Content
[0004] Therefore, it is necessary to provide a transmission mechanism and a lifting platform to address the problems of low reliability and low safety of the safety pin mechanism.
[0005] In a first aspect, a transmission mechanism and an elevator are provided, comprising:
[0006] A first mounting base and a second mounting base, wherein the first mounting base is provided with a first through hole and the second mounting base is provided with a second through hole, and the first through hole and the second through hole are arranged opposite to each other;
[0007] A rotating shaft is rotatably disposed within the first through hole and the second through hole;
[0008] A locking wheel, mounted on the rotating shaft, wherein at least two locking portions are provided circumferentially spaced along the edge of the locking wheel; and...
[0009] A locking assembly includes a pin seat and a safety pin. The pin seat is disposed on one side of the locking wheel and has a pin hole. The projection of the pin hole along the axial direction coincides with the rotation trajectory of the locking part. The safety pin is detachably inserted into the pin hole.
[0010] In one embodiment, the pin hole includes a first pin hole and a second pin hole, the axis of the first pin hole and the axis of the second pin hole are both disposed on the outer circumference of the locking part, the interval between the first pin hole and the second pin hole is greater than the width of the locking part, and the safety pin is detachably inserted into the first pin hole or the second pin hole.
[0011] In one embodiment, the interval between the first pin hole and the second pin hole is less than the width of the locking portion plus the interval between two adjacent locking portions.
[0012] In one embodiment, the pin seat has a groove with the groove opening facing the locking wheel, the rotation trajectory of the locking part passes through the groove, and the first pin hole and the second pin hole penetrate the two side walls of the groove.
[0013] In one embodiment, the locking assembly further includes a first sensor mounted on one side of the pin hole, the first sensor being used to detect whether the safety pin is located within the pin hole;
[0014] The locking assembly further includes a second sensor disposed on one side of the placement bracket, the second sensor being used to detect whether the safety pin is located within the placement bracket.
[0015] In one embodiment, the locking assembly includes a placement bracket connected to the pin holder, wherein the safety pin is movably placed in the placement bracket.
[0016] In one embodiment, the transmission mechanism further includes a first bearing and a second bearing, the first bearing being installed in the first through hole and the second bearing being installed in the second through hole, with the two ends of the rotating shaft being respectively installed in the first bearing and the second bearing.
[0017] In one embodiment, the transmission mechanism further includes a sprocket, a chain, and a cover. The sprocket is mounted on the rotating shaft, one end of the chain is sleeved on the sprocket, the other end of the chain is sleeved on the power receiving end, and the cover is placed over the sprocket.
[0018] In one embodiment, the rotating shaft is provided with a first keyway, and the locking wheel is provided with a second keyway, the first keyway and the second keyway being connected by a key.
[0019] Secondly, a lifting platform is provided, comprising the transmission mechanism, drive unit, and lifting tray described in any of the above embodiments. The output end of the drive unit is connected to the rotating shaft of the transmission mechanism, the transmission mechanism is connected to the lifting tray, and the drive unit drives the lifting tray to move up and down through the transmission mechanism.
[0020] The aforementioned transmission mechanism and lifting platform: The transmission mechanism is the intermediate link in the power transmission of the lifting platform. The transmission mechanism mainly receives and transmits power through a rotating shaft. The rotating shaft rotates on a first mounting base and a second mounting base. By mounting a locking wheel on the rotating shaft, the shaft drives the locking wheel to rotate. A locking component is installed on one side of the locking wheel. When the lifting platform needs to be locked, a safety pin is inserted into the pin hole of the pin holder. Because the pin hole is designed to correspond to the rotation trajectory of the locking part, the locking part will lock against the safety pin to form a lock. Even in the event of a lifting platform malfunction, reliable mechanical locking can be achieved, preventing locking failure due to a fault. This mechanism offers advantages of high reliability and high safety. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the transmission mechanism described in the embodiment of this application.
[0022] Figure 2 This is a front view of the transmission mechanism described in the embodiments of this application.
[0023] Reference numerals: 10. Transmission mechanism;
[0024] 110. First mounting base; 111. First bearing; 110A. First through hole; 120. Second mounting base;
[0025] 200. Shaft;
[0026] 300. Locking wheel; 310. Locking part;
[0027] 400, Locking assembly; 410, Pin holder; 410A, Pin hole; 410B, First pin hole; 410C, Second pin hole; 410D, Groove; 420, Safety pin; 430, First sensor; 440, Placement bracket; 450, Second sensor;
[0028] 510, sprocket; 520, chain; 530, protective cover. Detailed Implementation
[0029] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.
[0030] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application.
[0031] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0032] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.
[0033] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0034] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.
[0035] See Figure 1 and Figure 2 , Figure 1 and Figure 2 A schematic diagram of a transmission mechanism according to an embodiment of this application is shown. This transmission mechanism, applicable to the power transmission structure of an elevator, includes a first mounting base 110, a second mounting base 120, a rotating shaft 200, a locking wheel 300, and a locking assembly 400. The first mounting base 110 has a first through hole 110A, and the second mounting base 120 has a second through hole, with the first through hole 110A and the second through hole facing each other. The rotating shaft 200 is rotatably disposed within the first through hole 110A and the second through hole. The locking wheel 300 is mounted on the rotating shaft 200, and at least two locking portions 310 are spaced circumferentially along the edge of the locking wheel 300. The locking assembly 400 includes a pin seat 410 and a safety pin 420. The pin seat 410 is disposed on one side of the locking wheel 300. The pin seat 410 has a pin hole 410A. The position of the pin hole 410A corresponds to the movement path of the locking part 310. That is, the projection of the pin hole 410A along the axial direction coincides with the rotation trajectory of the locking part 310. The safety pin 420 is detachably inserted into the pin hole 410A.
[0036] The transmission mechanism described in this application embodiment is an intermediate link in the power transmission of the elevator. The transmission mechanism mainly receives and transmits power through a rotating shaft 200. The rotating shaft 200 rotates on the first mounting base 110 and the second mounting base 120. By mounting a locking wheel 300 on the rotating shaft 200, the rotating shaft 200 synchronously drives the locking wheel 300 to rotate. A locking component 400 is provided on one side of the locking wheel 300. When the elevator needs to be locked, a safety pin 420 is inserted into the pin hole 410A of the pin seat 410. Since the pin hole 410A corresponds to the rotation trajectory of the locking part 310 on the locking wheel 300, the locking part 310 will be locked against the safety pin 420 and cannot rotate, thereby locking the transmission mechanism. This also achieves reliable mechanical locking in the event of an elevator malfunction.
[0037] The transmission mechanism described in this application embodiment locks the transmission mechanism by providing a locking component 400. A safety pin 420 can be directly inserted into the pin hole 410A to restrict the locking wheel 300 and the rotating shaft 200. Since there is no need to align the pin holes on the tray and column, locking failure due to malfunction will not occur, resulting in high reliability and high safety.
[0038] In an optional embodiment, such as Figure 2 As shown, the pin hole 410A includes a first pin hole 410B and a second pin hole 410C. The axis of the first pin hole 410B and the axis of the second pin hole 410C are both located on the outer circumference of the locking part 310. That is, the projections of the first pin hole 410B and the second pin hole 410C along the axial direction A coincide with the rotation trajectory of the locking part 310. The distance between the first pin hole 410B and the second pin hole 410C is greater than the width of the locking part 310. The safety pin 420 is detachably inserted into the first pin hole 410B or the second pin hole 410C. Further, the distance between the first pin hole 410B and the second pin hole 410C is less than the width of the locking part 310 plus the distance between two adjacent locking parts 310.
[0039] In this embodiment, to prevent the locking part 310 from stopping exactly at the pin hole 410A and thus blocking it, a first pin hole 410B and a second pin hole 410C are provided. The distance between the first pin hole 410B and the second pin hole 410C is greater than the width of the locking part 310 but less than the width of the locking part 310 plus the distance between two adjacent locking parts 310. Therefore, even if the locking part 310 blocks the first pin hole 410B, the second pin hole 410C will definitely be located in the gap between the two locking parts 310. Alternatively, if the locking part 310 blocks the second pin hole 410C, the first pin hole 410B will definitely be located in the gap between the two locking parts 310. Thus, the safety pin 420 can be inserted into the first pin hole 410B or the second pin hole 410C located in the gap, so that the locking part 310 can be locked in the safety pin 420, realizing the function of a mechanical locking device. It has the advantages of high reliability and high safety.
[0040] In an optional embodiment, such as Figure 1As shown, the pin holder 410 has a groove 410D, with the opening of the groove 410D facing the locking wheel 300. The rotation path of the locking part 310 passes through the groove 410D, and the first pin hole 410B and the second pin hole 410C penetrate the two side walls of the groove 410D. Because the rotation path of the locking part 310 passes through the groove 410D, and the first pin hole 410B and the second pin hole 410D penetrate the groove 410D, the safety pin 420 can be firmly fixed by passing through the groove 410D, thereby firmly locking the locking wheel 300, which has the advantage of high reliability.
[0041] In an optional embodiment, such as Figure 1 and Figure 2 As shown, the locking assembly 400 also includes a first sensor 430, which is installed on one side of the pin hole 410A. The first sensor 430 is used to detect whether the safety pin 420 is located in the pin hole 410A. Specifically, the first sensor 430 can be a proximity switch, and there are two proximity switches, respectively corresponding to the first pin hole 410B and the second pin hole 410C. By setting the first sensor 430, it detects whether the safety pin 420 is located in the first pin hole 410B or the second pin hole 410C. When the safety pin 420 is inserted into the first pin hole 410B or the second pin hole 410C, the first sensor 430 obtains a signal, thereby preventing the elevator from being controlled to run. This avoids damage to the drive components caused by the elevator running in a locked state, and has the advantages of protecting the equipment and improving safety.
[0042] In an optional embodiment, such as Figure 1 and Figure 2 As shown, the locking assembly 400 includes a placement bracket 440, which is connected to the pin holder 410. The safety pin 420 is movably placed on the placement bracket 440. By placing the placement bracket 440 in an easily accessible position, the safety pin 420 can be placed on the placement bracket 440 during normal operation, making it easy to retrieve during maintenance or repair and preventing the safety pin 420 from being lost due to careless placement. Furthermore, the safety pin 420 can also be connected to the placement bracket 440 via a connecting rope, further preventing the safety pin 420 from falling or being lost, and facilitating its use by personnel.
[0043] Furthermore, such as Figure 1 and Figure 2As shown, the locking assembly 400 also includes a second sensor 450, which is disposed on one side of the placement bracket 440. The second sensor 450 is used to detect whether the safety pin 420 is located within the placement bracket 440. By setting the second sensor 450, it is possible to detect whether the safety pin 420 is placed on the placement bracket 440. Only when the safety pin 420 is detected to be placed on the placement bracket 440 can the equipment operate normally. This can prevent the safety pin 420 from being lost or forgotten to be removed from the pin hole 410A, ensuring stable operation of the equipment and improving its reliability.
[0044] In an optional embodiment, such as Figure 1 As shown, the transmission mechanism 10 also includes a first bearing 111 and a second bearing. The first bearing 111 is installed in a first through hole 110A, and the second bearing is installed in a second through hole. Both ends of the rotating shaft 200 are respectively installed on the first bearing 111 and the second bearing. Specifically, both ends of the rotating shaft 200 are fixedly connected to the first bearing 111 and the second bearing, respectively. The first bearing 111 rotates within the first through hole 110A, and the second bearing rotates within the second through hole. Alternatively, the first bearing 111 has a first inner ring and a first outer ring that can rotate relative to each other, and the second bearing has a second inner ring and a second outer ring that can rotate relative to each other. Both ends of the rotating shaft 200 are inserted and fixedly connected to the first inner ring and the second inner ring, respectively. The rotating shaft 200 and the inner ring rotate together relative to the outer ring, and the outer ring is fixed within the through hole. By installing the rotating shaft 200 on the first bearing 111 and the second bearing, stable operation of the rotating shaft 200 can be ensured, improving the reliability of the equipment.
[0045] In an optional embodiment, such as Figure 1 As shown, the transmission mechanism 10 also includes a sprocket assembly, which is disposed on the rotating shaft 200. Specifically, the sprocket assembly includes a sprocket 510, a chain 520, and a cover 530. The sprocket 510 is mounted on the rotating shaft 200, the chain 520 is sleeved on the sprocket 510, and the cover 530 covers the sprocket 510. As the power transmission component of the transmission mechanism, one end of the chain 520 is sleeved on the sprocket 510, and the other end of the chain 520 is sleeved on the power receiving end. The power receiving end can be the lifting component of the elevator. The rotation of the sprocket 510 drives the chain 520 to rotate, thereby driving the lifting component to move up and down. After the locking assembly 400 locks the locking wheel 300, the sprocket 510 cannot rotate, thereby locking the lifting component and ensuring operational safety.
[0046] Furthermore, such as Figure 1As shown, the sprocket 510 includes two sprockets. A locking wheel 300 is disposed on a rotating shaft 200 between a first mounting base 110 and a second mounting base 120. The two sprockets 510 are respectively disposed between the first mounting base 110 and the locking wheel 300, and between the locking wheel 300 and the second mounting base 120. A chain 520 can be fitted onto each of the two sprockets 510, and both sprockets 510 are also covered with a protective cover 530. By setting two sprockets 510 and a chain 520 on the locking wheel 300, the torsional force of the chain 520 transmission can be distributed, improving the stability and reliability of the equipment operation.
[0047] In an optional embodiment, the rotating shaft 200 is provided with a first keyway, and the locking wheel 300 is provided with a second keyway. The first keyway and the second keyway are connected by a key. The keyed connection between the rotating shaft 200 and the locking wheel 300 ensures a stable connection between them and has the advantages of simple processing and convenient installation. Similarly, the rotating shaft 200 and the sprocket 510 can be connected by a key.
[0048] On the other hand, this application embodiment also provides an elevator, which includes the transmission mechanism 10, drive unit and lifting tray as described in any of the above embodiments. The output end of the drive unit is connected to the rotating shaft 200 of the transmission mechanism 10. The transmission mechanism 10 is connected to the lifting tray. The drive unit drives the lifting tray to rise and fall through the transmission mechanism 10.
[0049] The lifting platform described in this application embodiment has a transmission mechanism 10 that serves as the transmission component between the drive unit and the lifting tray. By providing a locking component 400 in the transmission mechanism 10, a safety pin 420 can be directly inserted into the pin hole 410A to restrict the locking wheel 300 and the rotating shaft 200, thereby locking the transmission mechanism. Since there is no need for alignment of the pin holes 410A on the two mechanisms, locking failure will not occur due to malfunction, thus offering advantages of high reliability and high safety.
[0050] The transmission mechanism and elevator described in the embodiments of this application have the following advantages:
[0051] 1. By providing a locking component 400 in the transmission mechanism 10, the safety pin 420 can be directly inserted into the pin hole 410A to restrict the locking wheel 300 and the rotating shaft 200, thereby locking the transmission mechanism. Since there is no need for alignment of the pin holes 410A on the two mechanisms, the locking will not fail due to a malfunction, thus having the advantages of high reliability and high safety.
[0052] 2. By setting a first pin hole 410B and a second pin hole 410C, and the distance between the first pin hole 410B and the second pin hole 410C is greater than the width of the locking part 310 but less than the width of the locking part 310 plus the distance between the two locking parts 310, the first pin hole 410B or the second pin hole 410C is located in the gap of the locking part 310, so that the safety pin 420 can be inserted into the first pin hole 410B or the second pin hole 410C located in the gap to lock the locking part 310, thereby realizing the function of the mechanical locking device, which has the advantages of high reliability and high safety.
[0053] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0054] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A transmission mechanism, characterized in that, include: A first mounting base (110) and a second mounting base (120), wherein the first mounting base (110) is provided with a first through hole (110A) and the second mounting base (120) is provided with a second through hole, and the first through hole (110A) and the second through hole are arranged opposite to each other; A rotating shaft (200) is rotatably disposed within the first through hole (110A) and the second through hole; A locking wheel (300) is mounted on the rotating shaft (200), and the edge of the locking wheel (300) is provided with at least two locking portions (310) spaced circumferentially; and, The locking assembly (400) includes a pin seat (410) and a safety pin (420). The pin seat (410) is disposed on one side of the locking wheel (300). The pin seat (410) has a pin hole (410A). The projection of the pin hole (410A) along the axial direction coincides with the rotation trajectory of the locking part (310). The safety pin (420) is detachably inserted into the pin hole (410A).
2. The transmission mechanism according to claim 1, characterized in that: The pin hole (410A) includes a first pin hole (410B) and a second pin hole (410C). The axis of the first pin hole (410B) and the axis of the second pin hole (410C) are both located on the outer circumference of the locking part (310). The distance between the first pin hole (410B) and the second pin hole (410C) is greater than the width of the locking part (310). The safety pin (420) is detachably inserted into the first pin hole (410B) or the second pin hole (410C).
3. The transmission mechanism according to claim 2, characterized in that: The interval between the first pin hole (410B) and the second pin hole (410C) is less than the width of the locking part (310) plus the interval between two adjacent locking parts (310).
4. The transmission mechanism according to claim 2, characterized in that: The pin seat (410) is provided with a groove (410D), the opening of the groove (410D) is arranged facing the locking wheel (300), the rotation trajectory of the locking part (310) passes through the groove (410D), and the first pin hole (410B) and the second pin hole (410C) are arranged through the two side walls of the groove (410D).
5. The transmission mechanism according to claim 1, characterized in that: The locking assembly (400) includes a placement bracket (440) connected to the pin holder (410), and the safety pin (420) is movably placed in the placement bracket (440).
6. The transmission mechanism according to claim 5, characterized in that: The locking assembly (400) further includes a first sensor (430), which is mounted on one side of the pin hole (410A) and is used to detect whether the safety pin (420) is located in the pin hole (410A). The locking assembly (400) further includes a second sensor (450) disposed on one side of the placement bracket (440) and used to detect whether the safety pin (420) is located inside the placement bracket (440).
7. The transmission mechanism according to claim 1, characterized in that: The transmission mechanism (10) further includes a first bearing (111) and a second bearing. The first bearing (111) is installed in the first through hole (110A), and the second bearing is installed in the second through hole. The two ends of the rotating shaft (200) are respectively installed in the first bearing (111) and the second bearing.
8. The transmission mechanism according to claim 1, characterized in that: The transmission mechanism (10) further includes a sprocket (510), a chain (520), and a cover (530). The sprocket (510) is mounted on the rotating shaft (200). One end of the chain (520) is sleeved on the sprocket (510), and the other end of the chain (520) is sleeved on the power receiving end. The cover (530) covers the sprocket (510).
9. The transmission mechanism according to claim 1, characterized in that: The rotating shaft (200) is provided with a first keyway, and the locking wheel (300) is provided with a second keyway. The first keyway and the second keyway are connected by a key.
10. An elevator, characterized in that: Includes the transmission mechanism (10), drive unit and lifting tray as described in any one of claims 1-9, wherein the output end of the drive unit is connected to the rotating shaft (200) of the transmission mechanism (10), the transmission mechanism (10) is connected to the lifting tray, and the drive unit drives the lifting tray to rise and fall through the transmission mechanism (10).