Stop device and elevator

Abstract

The invention discloses a stopping device and a lifter, the stopping device and a lifting track synchronously ascend and descend, and the stopping device comprises a shaft seat, a stopping rod and an elastic part. And the shaft seats are arranged above the lifting track at intervals. The stop lever comprises a top pressing part, a stop part and a rotating part connected between the top pressing part and the stop part, the top pressing part and the stop part are arranged up and down, an included angle with an opening facing the inner side of the lifting track is formed between the top pressing part and the stop part, the rotating part is pivotally connected with the shaft seat through a first shaft, and the stop lever can swing around the axis of the first shaft so as to be switched between a first position and a second position; at the first position, the included angle between the jacking part and the horizontal plane is an acute angle, and the stopping part inclines towards the inner side of the lifting track to stop the crown block; at the second position, the stopping part swings towards the outer side of the lifting track to release the crown block; the elastic part is used for limiting the stop lever at the first position when the jacking part is not jacked, and the elastic part elastically deforms and allows the stop lever to move to the second position when the jacking part is jacked.

Description

Technical Field

[0001] This application relates to the technical field of semiconductor transfer systems, and particularly to a stop device and a lift. Background Art

[0002] During the semiconductor processing, an overhead crane is required to carry a wafer cassette loaded with wafers between various process machines. To save floor space, the overhead crane usually travels along a working track suspended in the air. When the overhead crane is installed on the working track, it needs to be first installed on a lifting track, and then the lifting track and the overhead crane on the lifting track are lifted by a lift. When the lifting track is lifted to the same height as the working track of the overhead crane and the docking is completed, the overhead crane enters the working track from the lifting track. However, during this process, if the lifting track tilts when it is lifted, the overhead crane is likely to fall from the lifting track. Summary of the Invention

[0003] To overcome the above drawbacks, the purpose of the present invention is to provide a stop device and a lift. The stop device uses a pure mechanical structure to achieve the stopping and releasing of the overhead crane on the lifting track, with a simple structure and high safety.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a stop device, the stop device is lifted and lowered synchronously with the lifting track, and the stop device includes: A shaft seat, the shaft seat is spaced above the lifting track; A stop bar, the stop bar includes a pressing part and a stopping part arranged up and down and a rotating part connected between the two. An angle with an opening facing the inner side of the lifting track is formed between the pressing part and the stopping part. The rotating part is pivotally connected to the shaft seat through a first shaft, and the stop bar can swing around the axis of the first shaft to switch between a first position and a second position; in the first position, the angle between the pressing part and the horizontal plane is an acute angle, and the stopping part inclines towards the inner side of the lifting track to stop the overhead crane; in the second position, the stopping part swings towards the outer side of the lifting track to release the overhead crane; An elastic part, the elastic part is used to limit the stop bar in the first position when the pressing part is not pressed. When the pressing part is pressed, the elastic part elastically deforms and allows the stop bar to move to the second position.

[0005] Furthermore, the stop device further includes a seat plate connected to the shaft seat. The seat plate is provided with a guiding hole. The elastic part includes a push rod and a compression spring. The push rod has an upper part pivotally connected to the pressing part and a lower part adapted to the guiding hole and extending in the up-and-down direction. Two ends of the compression spring respectively abut against the upper part and the seat plate. A groove is formed in either the pressing part or the rotating part. When the pressing part is pressed by the upper part, the groove allows the lower part to move within the guiding hole and the stop rod to swing towards the second position.

[0006] Furthermore, the shaft seat is located above the seat plate.

[0007] Furthermore, there are two stop rods, and the two stop rods are symmetrically arranged on both sides of the shaft seat.

[0008] Furthermore, a shaft sleeve sleeved outside the first shaft is fixed on the shaft seat; The upper part includes a seat body and a second shaft connected to the seat body and parallel to the first shaft. The second shaft passes through the two pressing parts, and first limit members are respectively fixed on the sides of the two pressing parts away from the push rod.

[0009] Furthermore, a gap is provided between the first limit member and the pressing part.

[0010] Furthermore, the second shaft is pivotally connected to the seat body, and second limit members located on both sides of the seat body are fixed on the second shaft.

[0011] Furthermore, the first shaft is fixedly connected to the rotating part. The groove is formed at one end of the pressing part away from the rotating part. The second shaft passes through the groove and can slide along the groove.

[0012] Furthermore, the groove is formed in the rotating part. The first shaft passes through the groove and can slide along the groove.

[0013] Furthermore, the elastic part is a torsion spring. Two ends of the torsion spring are respectively connected to the shaft seat and the stop rod. When the pressing part is pressed, the stop rod overcomes the torsion of the torsion spring and swings from the first position to the second position.

[0014] The present invention also discloses a lift, including the above-mentioned stop device. Description of the Drawings

[0015] Figure 1 It is a schematic three-dimensional structure diagram when the stop device stops the overhead crane according to an embodiment of the present invention; Figure 2Schematic three-dimensional structure diagram of the stopper device when releasing the overhead crane according to an embodiment of the present invention; Figure 3 Schematic three-dimensional structure diagram of the stopper device according to an embodiment of the present invention; Figure 4 Partial sectional view of the stopper device taken along a cutting plane according to an embodiment of the present invention; Figure 5 Another partial sectional view of the stopper device taken along a cutting plane according to an embodiment of the present invention; Figure 6 Schematic structure diagram of the stopper device when the stop bar is in the first position according to another embodiment of the present invention; Figure 7 Schematic structure diagram of the stopper device when the stop bar is in the second position according to another embodiment of the present invention; Figure 8 Schematic structure diagram of the stopper device when the stop bar is in the first position according to still another embodiment of the present invention; Figure 9 Schematic structure diagram of the stopper device when the stop bar is in the second position according to still another embodiment of the present invention. Detailed implementation manners

[0016] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making the protection scope of the present invention more clearly defined.

[0017] Refer to the attached Figure 1 As shown, a stopper device 100 of the present invention is located above the lifting track 200 and is lifted and lowered synchronously with the lifting track 200. The stopper device 100 is used to stop or release the overhead crane 300 located on the lifting track 200.

[0018] Refer to the attached Figure 2 As shown, the stopper device 100 includes a shaft seat 4, a stop bar 2, and an elastic part 3.

[0019] The shaft seats 4 are arranged at intervals above the lifting track 200.

[0020] Refer to the attached Figure 3As shown, the shift lever 2 includes a pressing part 21 and a stopping part 22 arranged vertically, and a rotating part 23 connected between the two. An angle with an opening facing the inner side of the lifting track 200 is formed between the pressing part 21 and the stopping part 22. The lifting track 200 includes two track bodies arranged at intervals in the width direction. The inner side of the lifting track 200 is the side where the two track bodies are close to each other in the width direction. The rotating part 23 is pivotally connected to the first shaft 1 and the shaft seat 4, and the shift lever 2 can swing around the axis of the first shaft 1 to switch between a first position and a second position. In the first position, the angle between the pressing part 21 and the horizontal plane is an acute angle, and the stopping part 22 inclines towards the inner side of the lifting track 200 to stop the overhead crane 300. At this time, the overhead crane 300 is in a locked state. In the second position, the stopping part 22 swings towards the outer side of the lifting track 200 to release the overhead crane 300. At this time, the overhead crane 300 is in an unlocked state, and the overhead crane 300 can travel along the length direction of the lifting track 200.

[0021] The elastic part 3 is used to limit the shift lever 2 to the first position when the pressing part 21 is not pressed. When the pressing part 21 is pressed, the elastic part 3 deforms elastically and allows the shift lever 2 to move to the second position.

[0022] See the appendix Figure 1 As shown, when the overhead crane 300 needs to be lifted, the pressing part 21 is not pressed, and the elastic part 3 limits the shift lever 2 to the first position. In the first position, the stopping part 22 inclines towards the inner side of the lifting track 200, and the stopping part 22 can stop the overhead crane 300 in the direction where the overhead crane 300 can slide. During the lifting process of the overhead crane 300, when the lifting track 200 inclines and the overhead crane 300 slides, due to the stopping part 22 of the shift lever 2 stopping the overhead crane 300, the overhead crane 300 will not fall from the lifting track 200.

[0023] When the overhead crane 300 and the lifting track 200 are synchronously lifted to a preset height and the lifting track 200 is docked with the working track in the air, the pressing part 21 of the shift lever 2 first abuts against a fixed part (not shown in the figure) fixed in the air. The fixed part can be, for example, the ceiling of the roof, or the keel suspended on the roof. The type of the fixed part is not limited in this embodiment. When the lifting track 200 continues to move upward, the pressing part 21 is pressed downward, and the shift lever 2 swings. During this swinging process, since an angle with an opening facing the inner side of the lifting track 200 is formed between the pressing part 21 and the stopping part 22 and the angle between the pressing part 21 and the horizontal plane is an acute angle at this time, the stopping part 22 can only swing towards the outer side of the overhead crane 300 until the shift lever 2 reaches the second position. At this time, Figure 2 As shown, the stopping part 22 is already located outside the front and rear traveling wheels of the overhead crane 300, and the stopping device 100 releases the overhead crane 300. The overhead crane 300 is in an unlocked state, and the overhead crane 300 can travel from the lifting track 200 to the working track.

[0024] In the prior art, an additional power source (such as an electric push rod or a pneumatic push rod) is arranged on the lifting track 200 to achieve the stopping and releasing of the overhead crane 300 on the lifting track 200. At this time, air pipes or cables need to be arranged on the lifting track 200, and the structure is complex. At the same time, because all power sources need to be controlled by a controller, this software-controlled structure has low reliability. It may cause the stopping failure of the overhead crane 300 on the lifting track 200 due to software anomalies or abnormal power outages, and then the overhead crane 300 may fall.

[0025] The stopping device 100 in this embodiment does not require these power sources. The stopping device 100 is a pure mechanical mechanism that moves up and down synchronously with the lifting track 200. The stopping device 100 can stop and release the overhead crane 300 on the lifting track 200 as the lifting track 200 moves up and down. Therefore, there is no need to consider arranging air pipes or cables on the lifting track 200, nor to consider the retraction and extension of air pipes or cables when the lifting track 200 moves up and down, which simplifies the structure. This pure mechanical structure does not rely on a controller and has high reliability.

[0026] The stopping device 100 moves up and down synchronously with the lifting track 200, that is, the stopping device 100 is connected to the lifting track 200. The stopping device 100 can be installed on the ground without the need for aerial operations, reducing the working intensity of personnel.

[0027] At the same time, the stopping device 100 is located above the lifting track 200, and it is the top pressing part 21 located above that is top pressed. Therefore, the distance that needs to be top pressed is short. There is no need to set up a telescopic power source in the air to top press the top pressing part 21. The stopping device 100 can top press the stop bar through a fixing part fixed in the air during the lifting process to achieve the release of the overhead crane 300, without controlling the power source and waiting for the power source to act, saving the release time of the overhead crane 300.

[0028] In one embodiment, refer to the appendix Figure 3As shown in the figure, the stop device 100 further includes a seat plate 5 fixedly connected to the shaft seat 4. The seat plate 5 is connected to the lifting track 200 through a connecting frame 6. The connecting frame 6 has a vertical section extending vertically. The lower end of the vertical section is connected to the lifting track 200, and the upper end of the vertical section is connected to the seat plate 5. The connecting frame can be a hook with a portal structure connecting the two track bodies of the lifting track 200, or other mechanisms specifically designed for installing the stop device 100. When the connecting frame 6 is a hook with a portal structure, it includes a vertical section connected to the two track bodies and a horizontal section connected to the upper ends of the two vertical sections. The seat plate 5 is fixed on the horizontal section. On the one hand, the connecting frame 6 connects the two track bodies of the lifting track 200, realizing the connection between the stop device 100 and the lifting track 200; on the other hand, the horizontal section of the connecting frame 6 arranged at intervals above the lifting track 200 raises the height position of the seat plate 5, enabling the stop device 100 to be arranged at intervals above the lifting track 200. At this time, the top pressure distance of the stop device 100 is short, and the unlocking time of the overhead crane 300 is short.

[0029] See the appendix Figure 5 As shown in the figure, the seat plate 5 is provided with a guiding hole 51. The elastic part 3 includes a push rod 32 and a compression spring 31. The push rod 32 has an upper part pivotally connected to the pressing part 21 and a lower part adapted to the guiding hole 51 and extending in the up and down direction. The two ends of the compression spring 31 are respectively abutted against the upper part and the seat plate 5. The pressing part 21 or the rotating part 23 is provided with a groove 24, and the groove 24 extends along the length direction of the pressing part 21. When the pressing part 21 is pressed through the upper part, the groove 24 allows the lower part to move in the guiding hole 51 and the stop rod 2 to swing to the second position.

[0030] In this embodiment, the guiding hole 51 guides the lifting of the push rod 32, allowing the push rod 32 to move only up and down. The upper part of the push rod 32 is pivotally connected to the pressing part 21. Together with the groove 24, when the push rod 32 moves up and down, it can drive the stop rod 2 to swing, converting the linear motion of the push rod 32 into the swinging of the stop rod 2, thereby realizing the switching of the stop rod 2 between the first position and the second position.

[0031] See the appendix Figure 3 As shown in the figure, the push rod 32 includes a push rod body 323, a seat body 321 fixedly connected to the push rod body 323, and a second shaft 322 passing through the seat body 321. The second shaft 322 is parallel to the first shaft 1 and its end passes through the pressing part 21. The part below the seat body 321 is the lower part, and the part above the seat body 321 and the seat body 321 is the upper part, and the upper part is always located above the seat plate 5.

[0032] In one embodiment, the upper end of the ejector rod body 323 extends upward out of the seat body 321, which increases the overall length of the ejector rod 32 and further shortens the distance that the ejector rod 32 needs to be pressed. In order to increase the contact area with the fixture fixed in the air and make the force applied by the fixture on the ejector rod more uniform, a top plate 324 is fixed at the top end of the ejector rod body 323, and the top plate 324 abuts against the fixture when the lifting track 200 is lifted to a preset height.

[0033] In one embodiment, there are two stop rods 2, and the two stop rods 2 are symmetrically arranged on both sides of the shaft seat 4. When in use, the stop device 100 is arranged between the front traveling wheels and the rear traveling wheels of the overhead crane 300. When the overhead crane 300 slides forward or backward along the extending direction of the lifting track 200, the overhead crane 300 moves from a position far away from the shaft seat 4 towards the shaft seat 4. The overhead crane 300 transmits the sliding force to the shaft seat 4 through the stop rod 2 and the first shaft 1, and the reaction force provided by the shaft seat 4 for the stop rod 2 and the first shaft 1 prevents the overhead crane 300 from further sliding, thereby avoiding the sliding and falling of the overhead crane 300. During this process, the force received by the first shaft 1 is always a pressure, and the first shaft 1 is not easily detached from the shaft seat 4.

[0034] In one embodiment, see the appendix Figure 4 As shown, a bushing 41 sleeving the first shaft 1 is fixed on the shaft seat 4. The bushing 41 extends along the axis direction of the first shaft 1 and encloses a circle. The upper part of the second shaft 322 passes through the pressing parts 21 of the two symmetrically arranged stop rods 2, and first limit members 3221 are respectively fixed on the sides of the two pressing parts 21 away from the ejector rod 32. The first limit members 3221 can be, for example, nuts threadedly connected to the second shaft 322, or protrusions integrally connected to the second shaft 322 by riveting or welding and protruding from the cross-section of the second shaft 322.

[0035] Since the stop part 22 collided by the overhead crane 300 is not at the axis position of the first shaft 1, the first shaft 1 will receive a bending moment around the direction perpendicular to the axis of the first shaft 1 and cause the pressing parts 21 of the stop rod 2 to tend to move away from the shaft seat 4. The bushing 41 can provide effective support for the first shaft 1. The bushing 41 extends along the axis direction of the first shaft 1, and the supporting position of the bushing 41 for the first shaft 1 is far away from the shaft seat 4, which can provide a larger lever arm for the first shaft 1 to resist the bending moment. The supporting force of the bushing 41 on the first shaft 1 is small, and the first shaft 1 is not easily damaged. The two first limit members 3221 on the second shaft 322 are arranged on the sides of the pressing parts 21 of the stop rod 2 away from the shaft seat 4, and the first limit members 3221 can stop the pressing parts 21. When only the first shaft 1 is inserted into the shaft seat 4 and there is no limit member at the first shaft 1 to prevent the first shaft 1 from detaching from the shaft seat 4, the two first limit members 3221 on the second shaft 322 can prevent the two stop rods 2 and the first shaft 1 from detaching from the shaft seat 4.

[0036] When there is a large gap between the inner wall surface of the sleeve 41 and the outer wall surface of the first shaft 1, or the sleeve 41 is subjected to a large impact, the sleeve 41 cannot provide effective support for the first shaft 1. Since the blocking rods 2 are symmetrically arranged on both sides of the shaft seat 4, and the stop device 100 is arranged between the front and rear running wheels of the overhead travelling vehicle 300, the overhead travelling vehicle 300 will slide and collide with the stop portion 22, which will only cause the top pressing portion 21 of the blocking rod 2 to have a tendency to move away from the shaft seat 4. Therefore, during the process of the first limit member 3221 stopping the top pressing portion 21, the second shaft 322 is mainly subjected to the tensile force. The tensile force and the force arm formed by the first limit member 3221 and the first shaft 1 can prevent the blocking rod 2 from swinging around the direction perpendicular to the axis of the first shaft 1, and prevent the overhead travelling vehicle 300 from sliding and falling. At this time, the second shaft 322 will not be easily bent and damaged due to the pressure.

[0037] The second shaft 322 is pivotally connected to the seat body 321. The second shaft 322 is fixed with second stoppers 3222 located on both sides of the seat body 321. The seat body 321 is limited between the two second stoppers 3222. The connection between the second shaft 322 and the blocking rod 2 may not rotate smoothly due to the setting of the first stopper 3221. Therefore, the first shaft 1 and the seat body 321 are pivotally connected to realize the pivotal connection between the second shaft 322 and the upper part. The second stopper 3222 can prevent the axial movement of the second shaft 322.

[0038] Exemplarily, the first limiting member 3221 and the second limiting member 3222 are nuts, the second shaft 322 has a shaft section and threaded sections at both ends of the shaft section, the shaft section is rotatably connected to the seat body 321, and the threaded section is threadedly connected to the nut.

[0039] In one embodiment, an anti-slipping member may be provided at the first shaft 1, and the anti-slipping member is used to limit the first shaft 1 from sliding out of the shaft seat 4. In this case, there is no need to fix the first limiting member 3221 on the second shaft 322. Exemplarily, the first shaft 1 is a screw that passes through the shaft seat 4, the nut of the screw is located on one side of the shaft seat 4, and the screw rod of the screw passes through the shaft seat 4 and the stopper 2 and is connected to the nut. At this time, the stopper 2 and the shaft seat 4 are limited between the nut and the nut, and the first shaft 1 will not be disengaged from the shaft seat 4. At this time, even without the first limiting member 3221, the stopper 2 can remain vertical to release and stop the overhead travelling crane 300.

[0040] The height position of the shaft seat 4 on the seat plate 5 is adjustable. Figure 2 As shown, the shaft seat 4 is located below the seat plate 5.

[0041] In one embodiment, see the attached Figure 8 and attached Figure 9As shown, the shaft seat 4 is located above the seat plate 5. At this time, the hinge joint between the stop lever 2 and the shaft seat 4 moves upward. When the shaft seat 4 is arranged below the seat plate 5 as opposed to being arranged above the seat plate 5, the angle between the pressing part 21 of the stop lever 2 and the horizontal plane decreases, and the angle between the stopping part 22 of the stop lever 2 and the plane perpendicular to the axis of the traveling wheel of the overhead crane 300 decreases. At the same time, the stopping part 22 of the stop lever 2 can have a longer length, and the stop lever 2 can be moved from the first position shown in the appended Figure 8 to the second position shown in the appended Figure 9 by the stop rod 32 being pressed a relatively small distance. After the pressing distance of the stop rod 32 decreases, the time for the overhead crane 300 to be locked and unlocked during the lifting and lowering process of the overhead crane 300 is effectively reduced, which can avoid the probability of the overhead crane 300 slipping and falling due to the inclination of the lifting track 200 when switching from being locked to unlocked. At the same time, placing the shaft seat 4 above the seat plate 5 allows the seat body 321 to deflect inward towards the overhead crane 300, preventing the shaft seat 4 from protruding outside the connecting frame 6 and saving space in the width direction of the elevator.

[0042] In one embodiment, referring to the appended Figure 3 as shown, the groove body 24 is opened at one end of the pressing part 21 away from the rotating part 23. The second shaft 322 passes through the groove body 24 and can slide along the groove body 24. The first shaft 1 is fixedly connected to the rotating part 23. At this time, the stop lever 2 swings with the first shaft 1 as the hinge axis. When the pressing part 21 is pressed, the second shaft 322 moves downward and slides along the groove body 24. Through the cooperation of the second shaft 322 and the groove body 24, the vertically downward force is converted into the acting force for the stop lever 2 to rotate, and the stop lever 2 swings to the second position.

[0043] In one embodiment, referring to the appended Figure 6 and the appended Figure 7 as shown, the groove body 24 is opened in the rotating part 23. The first shaft 1 passes through the groove body 24 and can slide along the groove body 24. At this time, the stop lever 2 swings with the second shaft 322 as the hinge axis. When the pressing part 21 is pressed, the second shaft 322 moves downward, that is, the hinge joint between the stop lever 2 and the second shaft 322 moves downward, and the first shaft 1 slides along the groove body 24. Through the cooperation of the first shaft 1 and the groove body 24, the vertically downward force is converted into the acting force for the stop lever 2 to rotate, and the stop lever 2 swings to the second position.

[0044] At this time, one end of the first shaft 1 passes through the groove body 24 and forms a limiting part 11. The limiting part 11 prevents the first shaft 1 from sliding out of the groove body 24. Exemplarily, the limiting part 11 is a nut threadedly connected to the first shaft 1, or the first shaft 1 is a screw, and the limiting part 11 is the nut of the screw.

[0045] In one embodiment, the elastic part 3 is a torsion spring. The two ends of the torsion spring are respectively connected to the shaft seat 4 and the stop lever 2. When the pressing part 21 is pressed, the stop lever 2 swings from the first position to the second position against the torsion of the torsion spring.

[0046]

[0046] In one embodiment, a roller is installed at one end of the pressing portion 21 away from the rotating portion 23. The roller is in rolling connection with the fixing member, reducing the friction force when the pressing portion 21 slides along the fixing member. The torsion spring is sleeved on the first shaft 1. One end of the torsion spring is connected to the shaft seat 4, and the other end is connected to the rotating portion 23. The torsion spring provides torsion force for the stop lever 2, so that when the pressing portion 21 is not pressed, the stop portion 22 is in the locked position. When the lifting track 200 rises to the preset position, the roller is pressed by the fixing member. The roller moves while rolling along the fixing member, and the stop lever 2 rotates against the torsion force, and the stop portion 22 moves from the first position to the second position.

[0047]

[0047] In one embodiment, the present invention also discloses a lift, which includes a lifting track 200, a trolley 300 that can slide along the lifting track 200, and the above-mentioned stop device 100.

[0048]

[0048] The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it. It cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention are covered by the protection scope of the present invention.

Claims

1. A stop device, the stop device being lifted and lowered synchronously with a lifting track, characterized in that: The stop device includes: A shaft seat, which is arranged above the lifting track at intervals; A stop bar, which includes a pressing part and a stopping part arranged up and down and a rotating part connected between the two. An included angle with an opening facing the inner side of the lifting track is formed between the pressing part and the stopping part. The rotating part is pivotally connected to the shaft seat through a first shaft, and the stop bar can swing around the axis of the first shaft to switch between a first position and a second position; in the first position, the included angle between the pressing part and the horizontal plane is an acute angle, and the stopping part inclines towards the inner side of the lifting track to stop the overhead crane; in the second position, the stopping part swings towards the outer side of the lifting track to release the overhead crane; An elastic part, which is used to limit the stop bar in the first position when the pressing part is not pressed. When the pressing part is pressed, the elastic part elastically deforms and allows the stop bar to move to the second position.

2. The stop device according to claim 1, characterized in that: The stop device further includes a seat plate connected to the shaft seat. The seat plate is provided with a guiding hole. The elastic part includes a top rod and a compression spring. The top rod has an upper part pivotally connected to the pressing part and a lower part adapted to the guiding hole and extending in the up and down direction. Two ends of the compression spring respectively abut against the upper part and the seat plate. A groove is formed in the pressing part or the rotating part. When the pressing part is pressed through the upper part, the groove allows the lower part to move in the guiding hole and the stop bar to swing towards the second position.

3. The stop device according to claim 2, characterized in that: The shaft seat is located above the seat plate.

4. The stop device according to claim 1, characterized in that: There are two stop bars, and the two stop bars are symmetrically arranged on both sides of the shaft seat.

5. The stop device according to claim 2, characterized in that: A bushing sleeving the first shaft is fixed on the shaft seat; The upper part includes a seat body and a second shaft connected to the seat body and parallel to the first shaft. The second shaft passes through the two pressing parts, and first limit members are respectively fixed on the sides of the two pressing parts away from the top rod.

6. The stop device according to claim 5, characterized in that: The second shaft is pivotally connected to the seat body, and second limit members located on both sides of the seat body are fixed on the second shaft.

7. The stop device according to claim 5, characterized in that: The first shaft is fixedly connected to the rotating part, the groove is formed at one end of the pressing part away from the rotating part, and the second shaft passes through the groove and can slide along the groove.

8. The stop device according to claim 2, wherein: The groove is formed in the rotating part, and the first shaft passes through the groove and can slide along the groove.

9. The stop device according to claim 1, characterized in that: The elastic part is a torsion spring, and two ends of the torsion spring are respectively connected to the shaft seat and the stop bar. When the pressing part is pressed, the stop bar overcomes the torsion of the torsion spring and swings from the first position to the second position.

10. An elevator, characterized in that: Including the stop device according to any one of claims 1-9.

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