Stop device and elevator with same

Abstract

The invention discloses a stop device and an elevator with the same. The stopping device comprises a fixed shaft, a first rod body, a second rod body, an ejector rod and a reset part, the fixed shaft is suspended above the lifting track, the joint of the first part and the second part of the first rod body is pivotally connected with the fixed shaft, the inner side end of the second rod body is pivotally connected with the upper end of the first rod body, and the height of the inner side end is always lower than that of the outer side end; the lower end of the ejector rod is pivotally connected with the outer side end, and the ejector rod can move up and down and has an extending position and a retracting position: at the extending position, the ejector rod extends out, and the second part swings towards the inner side of the lifting track to stop the crown block; at the retraction position, the ejector rod retracts, and the second part swings towards the outer side of the lifting track to release the crown block; the reset part is suitable for enabling the ejector rod to reset upwards to the extending position when the ejector rod is unloaded, and when the ejector rod is ejected downwards, the reset part elastically deforms and allows the ejector rod to move to the retracting position. According to the invention, stopping and releasing of the crown block can be realized without additionally arranging other driving structures.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor transfer systems, and particularly to a stop device and a lift having the same. Background Art

[0002] During the semiconductor processing, it is necessary to transport the wafer cassette loaded with wafers between various process machines by an overhead crane. 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 is necessary to first install the overhead crane on a lifting track formed by two parallel track segments, and then use a lift to lift the lifting track and the overhead crane on the lifting track. 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] One object of the present invention is to provide a stop device for stopping or releasing an overhead crane located on a lifting track, which includes: a fixed shaft, the fixed shaft being suspended above the lifting track; a first rod body, the first rod body having a first part and a second part arranged up and down, a connection part between the first part and the second part being pivotally connected to the fixed shaft; a second rod body, the second rod body having an inner end close to the inner side of the lifting track and an outer end far from the inner side of the lifting track, the inner end being pivotally connected to the upper end of the first part through a shaft rod, and the height of the inner end being always lower than that of the outer end; a top rod, the top rod extending in the up and down direction, a lower end of the top rod being pivotally connected to the outer end, the top rod being movable up and down and having an extended position and a retracted position: in the extended position, the top rod extends upward, and the second part swings toward the inner side of the lifting track to stop the overhead crane; in the retracted position, the top rod retracts downward, and the second part swings toward the outer side of the lifting track to release the overhead crane; a reset part, the reset part being adapted to reset the top rod upward to the extended position when the top rod is unloaded, and when the top rod is pressed downward, the reset part elastically deforms and allows the top rod to move to the retracted position.

[0004] Further, the reset part includes a push seat and an elastic member I, the push seat being used for reciprocating movement along the width direction of the lifting track, the push seat being pivotally connected to the inner end and the upper end of the first part through a shaft rod, an adjustment hole allowing the first rod body to swing being provided at a connection part between the first part and the second part or at the upper end of the first part, the elastic member I acting on the push seat in an elastically deformable manner, and when the elastic member I is in a natural state, the push seat moves to a position close to the top rod.

[0005] Furthermore, the adjusting hole has a first hole wall and a second hole wall. Taking the projection of the first hole wall along the length direction of the first rod as d1 and the projection of the second hole wall along the width direction of the first rod as d2, d1≥d2.

[0006] Furthermore, there are two sets of the first rod and the second rod. The two sets of the first rod and the second rod are symmetrically arranged on both sides of the ejector rod along the shaft rod. The stop device further includes a limiting portion provided at the end of the shaft rod. The limiting portion protrudes from the cross-section of the shaft rod and is located on the side of the adjusting hole away from the push seat.

[0007] Furthermore, the reset portion further includes at least one guide seat and a guide rod slidably connected to any one of the guide seat and the push seat. Two ends of the first elastic member are respectively connected to the guide seat and the push seat.

[0008] Further, the reset portion includes a second elastic member for applying a force in the extending direction to the ejector rod. When the second elastic member is in a natural state, the ejector rod is in an extended position.

[0009] Further, a stop block abutting against the tread of the traveling wheel of the overhead crane is further provided at the lower end of the second portion. The stop block has a stop surface capable of abutting against the tread of the traveling wheel, and the stop block can swing to make the stop surface fit with the tread of the traveling wheel.

[0010] Furthermore, the lower end of the second portion has an arc surface gradually inclined away from the stop block on the side close to the stop block.

[0011] Furthermore, the distance between the upper end of the first rod and the fixed shaft is less than the distance between the lower end of the first rod and the fixed shaft.

[0012] Furthermore, it further includes a sliding seat disposed outside the ejector rod. The sliding seat is provided with a sliding groove arranged along the moving direction of the ejector rod. The outer end is connected to the ejector rod through a pin shaft, and the pin shaft can slide along the sliding groove.

[0013] Furthermore, it further includes a bracket. The bracket is disposed on the lifting track, and the ejector rod is disposed on the bracket and is located on the side away from the lifting track.

[0014] The present invention also provides a lift, which includes the aforementioned stop device. Description of the Drawings

[0015] Figure 1Schematic three-dimensional structure of the stop device according to an embodiment of the present invention in the released state for the overhead crane and not installed on the bracket; Figure 2 Schematic three-dimensional structure of the stop device according to an embodiment of the present invention in the blocking state for the overhead crane and not installed on the bracket; Figure 3 Schematic structure of the first rod of the stop device according to an embodiment of the present invention; Figure 4 Schematic structure of the adjustment hole of the first rod according to an embodiment of the present invention; Figure 5 Schematic structure of the stop block of the stop device according to an embodiment of the present invention; Figure 6 Schematic three-dimensional structure of the positional relationship between the stop device and the lifting track in the released state for the overhead crane according to an embodiment of the present invention; Figure 7 Schematic three-dimensional structure of the positional relationship between the stop device and the lifting track in the blocking state for the overhead crane according to an embodiment of the present invention; Figure 8 Schematic three-dimensional structure of the stop device installed on the bracket according to an embodiment of the present invention. Detailed implementation manners

[0016] The following elaborates on the preferred embodiments of the present invention in conjunction with 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 scope of protection of the present invention more clearly defined.

[0017] In the prior art, when the triggering position of the stop device is set close to the lifting track 2, even when the overhead crane 3 is raised in place, it is necessary to apply a force to the stop device by means of other driving sources to achieve the effect of releasing the overhead crane 3. Therefore, on the one hand, since the driving source needs to be installed on the top wall, the installation difficulty is increased. On the other hand, the structural complexity and maintenance difficulty will also increase due to the need to set up structures such as circuits or air paths. Embodiment 1: Referring to the attached Figure 1-8 As shown, this embodiment is a stop device. The stop device is lifted and lowered synchronously with the lifting track 2, and includes: a fixed shaft 110 suspended above the lifting track 2, a first rod 11, a second rod 12, a top rod 13, and a reset portion.

[0018] Referring to the attached Figure 3 As shown, the first rod 11 of this embodiment has a first portion 116 and a second portion 117 arranged up and down. The connection between the first portion 116 and the second portion 117 is pivotally connected to the fixed shaft 110.

[0019] The top rod 13 of the present invention is in the up and down direction (Figure 2 extends in the direction of arrow A in [reference], the lower end of the ejector rod 13 is pivotally connected to the outer end 122 of the second rod body 12, and the ejector rod 13 can move up and down and has an extended position and a retracted position: in the extended position, the ejector rod 13 extends upward, and the second part 117 of the first rod body 11 swings inwardly towards the lifting track 2 to block the overhead crane 3; in the retracted position, the ejector rod 13 retracts downward, and the second part 117 swings outwardly towards the lifting track 2 to release the overhead crane 3.

[0020] The second rod body 12 of this embodiment has an inner end 121 close to the inner side of the lifting track 2 and an outer end 122 far from the inner side of the lifting track 2 (see Figure 1 ), the upper end of the inner end 121 is pivotally connected to the first part 116 by a shaft rod 14, and the height of the inner end 121 is always lower than that of the outer end 122.

[0021] The reset part of this embodiment is adapted to reset the ejector rod 13 upward to the extended position when the ejector rod 13 is unloaded. When the ejector rod 13 is pressed downward, the reset part elastically deforms and allows the ejector rod 13 to move to the retracted position.

[0022] The working process of the stop device of this embodiment is as follows: during the upward movement of the stop device along with the lifting track 2, the ejector rod 13 is not pressed (see Figure 2 and Figure 7 ), while the reset part makes the ejector rod 13 extend upward through the second rod body 12, it makes the second part 117 of the first rod body 11 swing around the fixed axis 110 to the inner side of the lifting track 2. At this time, the overhead crane 3 can be blocked, thereby avoiding the overhead crane 3 from slipping and falling on the lifting track 2 due to the inclination of the lifting track 2 when it is lifted. As the overhead crane 3 reaches the up and down position, the ejector rod 13 will naturally be pressed by other structures (such as the ceiling, installation keel, etc.) (see Figure 1 and Figure 6 ). At this time, the ejector rod 13 pushes the outer end 122 of the second rod body 12 to move downward. While the second rod body 12 moves downward, the second rod body 12 swings. The angle between the cross-section of the second rod body 12 and the axis of the ejector rod 13 gradually decreases. The inner end 121 of the second rod body 12 pushes the first part 116 of the first rod body 11 to move towards the inner side of the lifting track 2, and the first rod body 11 swings around the fixed axis 110. The second part 117 of the first rod body 11 swings towards the outer side of the lifting track 2 (see Figure 6 ), and the overhead crane 3 can be released.

[0023] Since the fixed shaft 110 is suspended above the lifting track 2, the first part 116 of the first rod 11 is located above the second part 117 of the first rod 11. The connection between the first part 116 and the second part 117 is pivotally connected to the fixed shaft 110. The upper end of the first part 116 of the first rod 11 is pivotally connected to the inner end 121 of the second rod 12, and the outer end 122 of the second rod 12 is higher than the inner end 121 of the second rod 12. The outer end 122 of the second rod 12 is pivotally connected to the ejector rod 13. Therefore, the ejector rod 13 can be pressed at a higher position above the lifting track 2, and the distance required to press the ejector rod 13 is shorter. As the lifting track 2 rises to the in-place position, the ejector rod 13 at a higher position is easily pushed by the ceiling or keel, etc. Therefore, there is no need to use a power-driven electric push rod or pneumatic push rod to extend a long distance to press the ejector rod 13, saving the time for unlocking the overhead crane 3.

[0024] By keeping the height of the inner end 121 of the second rod 12 of this embodiment always lower than that of the outer end 122, it can be ensured that when it is necessary to release the overhead crane 3, after the ejector rod 13 is pressed downward, when the first rod 11 swings along with the second rod 12, the second part 117 of the first rod 11 always swings towards the outside of the lifting track 2 and will not interfere with the normal driving process of the overhead crane 3.

[0025] The present invention always applies an upward acting force to the ejector rod 13 by means of the reset part, so that the ejector rod 13 is always in the extended position when not being pressed; while when an acting force for pressing the ejector rod 13 downward is applied, the ejector rod 13 is in the retracted position. Thus, there is no need to additionally provide other driving structures. As long as the stop device rises to a certain height along with the overhead crane 3, the external structure can naturally press the ejector rod 13 to make it retract. Thus, after the overhead crane 3 rises to the in-place position, the ejector rod 13 can drive the second part 117 of the first rod 11 to swing towards the outside of the lifting track 2 to release the overhead crane 3. Therefore, there is no need to set a cylinder or an electric cylinder on the lifting track 2 to directly stop the overhead crane. Thus, there is no need to consider arranging air pipes or cables, nor to consider the winding and unwinding of air pipes or cables during the lifting of the lifting track 2, simplifying the structure. The stop and release of the overhead crane by the stop device of the present application are both automatically carried out along with the lifting process of the lifting track 2, without additional electrical control and with high reliability.

[0026] The "suspension" of the present invention means that the fixed shaft 110 is arranged above the lifting track 2 without contact. It is not strictly limited to being directly above the lifting track 2, as long as it is ensured that the height is higher than the lifting track 2. For example, it can be arranged above the overhead crane 3.

[0027] In some embodiments, the reset portion includes a push seat 15 and a first elastic member 19. The push seat 15 is configured to reciprocate in the width direction of the lifting track 2. The push seat 15 is pivotally connected to the inner end 121 and the upper end of the first portion 116 through a shaft rod 14. An adjustment hole 111 allowing the first rod body 11 to swing is provided at the connection between the first portion 116 and the second portion 117 or at the upper end of the first portion 116. The first elastic member 19 acts on the push seat 15 in an elastically deformable manner. When the first elastic member 19 is in its natural state, the push seat 15 moves to a position close to the ejector rod 13.

[0028] When the ejector rod 13 is not pressed, the first elastic member 19 is in its natural state. The push seat 15 is pushed by the first elastic member 19 and is located at a position close to the ejector rod 13. The push seat 15 drives the first rod body 11 and the second rod body 12 through the shaft rod 14, so that the inner end 121 of the second rod body 12 is located at the position closest to the ejector rod 13. The ejector rod 13 is pushed by the second rod body 12 and extends upward. The first rod body 11 swings around the fixed axis 110, causing the second portion 117 to block the overhead crane 3 (see attached Figure 2 and Figure 7 ), and the blocking device is in a blocking state for the overhead crane 3; conversely, when the ejector rod 13 is pressed downward, the outer end 122 of the second rod body 12 is pushed downward. While the second rod body 12 moves downward, the second rod body 12 swings. The angle between the cross-section of the second rod body 12 and the axis of the ejector rod 13 gradually decreases. The inner end 121 of the second rod body 12 pushes the first portion 116 of the first rod body 11 toward the inner side of the lifting track 2 through the shaft rod 14. At the same time, the shaft rod 14 moves away from the ejector rod 13 under the drive of the second rod body 12 and drives the push seat 15 to move away from the ejector rod 13. The first elastic member 19 is in a compressed state. The first rod body 11 is driven by the shaft rod 14 to swing around the fixed axis 110, so that the second portion 117 releases the overhead crane 3. At this time, the push seat 15 is in a position away from the ejector rod 13 (see attached Figure 1 ), and the blocking device is in a release state for the overhead crane 3.

[0029] See attached Figure 3 and attached Figure 4As shown, in some embodiments, the adjustment hole 111 has a first hole wall 1111 and a second hole wall 1112. Taking the projection of the first hole wall 1111 along the length direction of the first rod 11 as d1, and the projection of the second hole wall 1112 along the width direction of the first rod 11 as d2, d1≥d2. Thus, by providing the adjustment hole 111 and setting d1≥d2, when the overhead crane 3 is released, the shaft rod 14 moves away from the ejector rod 13, and the first rod 11 connected to the shaft rod 14 not only swings but also is lifted and moved obliquely upward; when the overhead crane 3 is blocked, the push seat 15 moves the shaft rod 14 toward the ejector rod 13 under the action of the first elastic member 19, and the first rod 11 connected to the shaft rod 14 not only swings but also is pushed and moved obliquely downward. The adjustment hole 111 provides an adjustment space for the relative movement of the first rod 11 and the shaft rod 14 or the fixed shaft 110 along the length direction of the first rod 11.

[0030] In some embodiments, one end of the first hole wall 1111 away from the fixed shaft 110 is inclined away from the ejector rod 13, and one end of the first hole wall 1111 close to the fixed shaft 110 is inclined toward the ejector rod 13. In other possible embodiments, the first hole wall 1111 may also be arranged along the length direction of the first rod 11, that is, the adjustment hole 111 may also be in a form that is no longer inclined.

[0031] In some embodiments, referring to the attached Figure 3 As shown, the distance between the upper end of the first rod 11 and the fixed shaft 110 is less than the distance between the lower end of the first rod 11 and the fixed shaft 110. Thus, when the distance that the ejector rod 13 is pushed is short, the second part 117 of the first rod 11 can also completely move between the position of blocking the overhead crane 3 and the position of avoiding the overhead crane 3. After the stroke of the ejector rod 13 is shortened, the size of the blocking device in the height direction is reduced, which helps to lift the lifting track 2 to a higher height when the roof height is limited, and at the same time can shorten the switching time from blocking the overhead crane to releasing the overhead crane, which helps to improve the safety of the overhead crane 3 on the lifting track 2 when it is lifted.

[0032] In some embodiments, there are two sets of the first rod body 11 and the second rod body 12. The two sets of the first rod body 11 and the second rod body 12 are symmetrically arranged on both sides of the ejector rod 13 along the shaft rod 14. The stopper device further includes a limiting portion 141 provided at the end of the shaft rod 14. The limiting portion 141 protrudes from the cross-section of the shaft rod 14 and is located on the side of the adjusting hole 111 away from the push seat 15. When in use, the stopper device can be located between the front and rear wheels of the overhead crane 3. When the overhead crane 3 slides to either end of the lifting track 2, the side of the second part 117 of the first rod body 11 away from the push seat 15 is pushed by the traveling wheel 31 of the overhead crane 3 or other structures of the overhead crane 3. The first rod body 11 transmits the thrust to the fixed shaft 110. The first part 116 of the first rod body 11 having a tendency to swing away from the push seat 15 is limited by the limiting portion 141. At this time, the fixed shaft 110 forms a fulcrum area where the first rod body 11 swings under the pressing of the traveling wheel 31. In this process, the maximum thrust is transmitted to the fixed shaft 110. The shaft rod 14 is blocked by the limiting portion 141, and the shaft rod 14 is mainly subjected to the action of tensile force, and the shaft rod 14 will not be damaged due to pressure and bending moment.

[0033] The limiting portion 141 can be, for example, a nut threadedly connected to the shaft rod, or a protrusion integrally formed by riveting or welding the shaft rod. The type of the limiting portion 141 is not limited in this embodiment.

[0034] In some embodiments, the reset portion further includes at least one guide seat and a guide rod 18 slidably connected to either the guide seat or the push seat 15. Two ends of the first elastic member 19 are respectively connected to the guide seat and the push seat 15.

[0035] For example, the guide seat includes a first guide seat 16 and a second guide seat 17 respectively located on both sides of the push seat 15. Through holes for the guide rod 18 to enter and exit are oppositely provided on the first guide seat 16 and the second guide seat 17. The guide rod 18 is fixed to the push seat 15 (the fixing method is not limited. For example, the push seat 15 and the guide rod 18 can be provided with through pin holes, and the two are fixed with a pin). The guide rod 18 can reciprocally move with the push seat 15 in the first guide seat 16 and the second guide seat 17. The function of the guide rod 18 in this process is to guide the moving direction of the shaft rod 14 connected to the push seat 15.

[0036] Alternatively, the guide rod 18 can also be fixed to the first guide seat 16 and the second guide seat 17, and a seat hole for the guide rod 18 to pass through is provided on the push seat 15, so that the guide rod 18 slides in the seat hole of the push seat 15.

[0037] In other possible embodiments, the pushing seat 15 can also reciprocate in the width direction of the lifting track 2 under the guidance of a guide rail. In some embodiments, the first elastic member 19 is a compression spring, which is respectively connected to the second guiding seat 17 and the pushing seat 15. When the ejector rod 13 is pressed, the second rod body 12 drives the pushing seat 15 to move towards the second guiding seat 17, and the first elastic member 19 is compressed; when the ejector rod 13 is not pressed, the first elastic member 19 resets and applies a force to the pushing seat 15 towards the direction close to the ejector rod 13. Therefore, the outer end 122 of the second rod body 12 swings upwards accordingly, and the ejector rod 13 returns to the ejected state.

[0038] In other possible embodiments, the first elastic member 19 is a tension spring, which is arranged between the first guiding seat 16 and the pushing seat 15. When the first elastic member 19 is in a natural state, it drives the pushing seat 15 to always be located on the side close to the ejector rod 13, and the ejector rod 13 is in the ejected state; when the lifting track rises in place and the overhead crane 3 needs to be released, the ejector rod 13 is pressed downwards, which drives the outer end 122 of the second rod body 12 to move downwards, and drives the inner end 121 to swing away from the ejector rod 13, and further drives the pushing seat 15 to move away from the tension spring. At this time, the tension spring of the first elastic member 19 is in a stretched state. When the pressing force is no longer applied to the ejector rod 13, the tension spring restores.

[0039] In some embodiments, as shown in the attached Figure 5 figure, a stop block 112 is further arranged at the lower end of the second part 117, which abuts against the wheel surface of the traveling wheel 31 of the overhead crane 3. The stop block 112 has a stop surface 1121 that can abut against the wheel surface of the traveling wheel 31, and the stop block 112 can swing to make the stop surface 1121 fit with the wheel surface of the traveling wheel 31.

[0040] A clamping block 1122 is arranged on the side of the stop block 112 close to the first rod body 11, and a limiting groove 118 is arranged on the first rod body 11 to cooperate with the clamping block 1122. The cooperation between the limiting groove 118 and the clamping block 1122 can prevent the stop block 112 from rotating and ensure the stability during stopping.

[0041] When the first rod body 11 is in the stopping position, the contact surface of the abutting part of the stop block 112 is inclined towards the traveling wheel 31.

[0042] In some embodiments, the lower end of the second part 117 of the first rod body 11 has an arc surface 119 that gradually inclines away from the stop block 112 on the side close to the stop block 112 (see Figure 2As shown). Therefore, the gap formed between the stopper 112 and the first rod 11 allows the stopper 112 to swing to a certain extent along the arc surface 119 when it contacts the traveling wheel 31. Thus, the contact surface of the stopper 112 can fit with the upper half of the wheel surface of the traveling wheel 31, effectively stopping the traveling wheel 31.

[0043] In some embodiments, it further includes a sliding seat 113 disposed outside the ejector rod 13. The sliding seat 113 is provided with a sliding groove 1131 arranged along the moving direction of the ejector rod 13. The outer end 122 of the second rod 12 is connected to the ejector rod 13 through a pin shaft, and the pin shaft can slide along the sliding groove 1131.

[0044] In some embodiments, the stopping device further includes a bracket 114 (see Figure 8 ). The bracket 114 is disposed on the lifting track 2. The ejector rod 13 is disposed on the bracket 114 and is located on the side away from the lifting track 2. In this application, by installing the stopping device on the bracket 114 connected to the lifting track 2, it is convenient to install the stopping device on the ground without the need for aerial operation, reducing the working intensity of personnel.

[0045] In some embodiments, the bracket 114 is C-shaped in a plane perpendicular to the extension of the lifting track 2. Therefore, after connecting the bracket 114 to the two tracks, it is convenient for the overhead crane 3 to pass through.

[0046] In some embodiments, the stopping device further includes a mounting plate 115. The sliding seat 113, the first guide seat 16, and the second guide seat 17 are all disposed on one side surface of the mounting plate 115. The fixed shaft 110 is disposed on the other side surface of the mounting plate 115 through a bearing seat.

[0047] Embodiment 2: This embodiment is a stopping device, which is different from Embodiment 1 in that the push seat 15 and the guide seat are no longer provided, and the reset portion is replaced with an elastic member two for applying a force in the extending direction to the ejector rod 13. When the elastic member two is in the natural state, the ejector rod 13 is in the extended position.

[0048] In some embodiments, the elastic member two can be a spring disposed at the lower end of the ejector rod 13, and its axis is arranged along the central axis direction of the ejector rod 13. When no downward pressing force is applied to the ejector rod 13, the spring is in the natural state (slightly compressed only by the gravity of the ejector rod 13); when a downward pressing force is applied to the ejector rod 13, the spring is compressed, and the outer end 122 of the second rod 12 swings downward along with the ejector rod 13. However, the height of the inner end 121 is always lower than the height of the outer end 122, and the first rod 11 rotates around the fixed shaft 110 along with the second rod 12, and its second part 117 swings away from the overhead crane 3, thereby achieving the effect of releasing the overhead crane 3.

[0049] Embodiment 3: This embodiment is a lift, which includes at least one stop device of Embodiment 1 or at least one stop device of Embodiment 2.

[0050] 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 and essence of the present invention should be covered within 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 Comprising: A fixed shaft, which is suspended above the lifting track; A first rod body, the first rod body having a first part and a second part arranged up and down, and the connection between the first part and the second part is pivotally connected to the fixed shaft; A second rod body, the second rod body having an inner end close to the inner side of the lifting track and an outer end far from the inner side of the lifting track, the inner end is pivotally connected to the upper end of the first part through a shaft rod, and the height of the inner end is always lower than that of the outer end; A top rod, the top rod extending in the up and down direction, the top rod is pivotally connected to the outer end, and the top rod can move up and down and has an extended position and a retracted position: at the extended position, the top rod extends upward, and the second part swings toward the inner side of the lifting track to stop the overhead crane; at the retracted position, the top rod retracts downward, and the second part swings toward the outer side of the lifting track to release the overhead crane; A reset part, the reset part is adapted to reset the top rod upward to the extended position when the top rod is unloaded, and when the top rod is pressed downward, the reset part elastically deforms and allows the top rod to move to the retracted position.

2. The stop device according to claim 1, characterized in that, The reset part includes a push seat and an elastic member I, the push seat is used for reciprocating movement along the width direction of the lifting track, the push seat is pivotally connected to the inner end and the upper end of the first part through the shaft rod, an adjustment hole allowing the first rod body to swing is provided at the connection between the first part and the second part or the upper end of the first part, the elastic member I acts on the push seat in an elastically deformable manner, and when the elastic member I is in a natural state, the push seat moves to a position close to the top rod.

3. The stop device according to claim 2, wherein, The adjustment hole has a first hole wall and a second hole wall. Taking the projection of the first hole wall along the length direction of the first rod body as d1, and taking the projection of the second hole wall along the width direction of the first rod body as d2, d1≥d2.

4. The stop device according to claim 2, characterized in that, There are two groups of the first rod body and the second rod body, and the two groups of the first rod body and the second rod body are symmetrically arranged on both sides of the top rod along the shaft rod. The stop device further includes a limit part arranged at the end of the shaft rod, and the limit part protrudes from the cross section of the shaft rod and is located on the side of the adjustment hole far from the push seat.

5. The stop device according to any one of claims 2-4, characterized in that, The reset part further includes at least one guide seat and a guide rod slidably connected to any one of the guide seat and the push seat, and two ends of the elastic member I are respectively connected to the guide seat and the push seat.

6. The stop device according to claim 1, characterized in that, The reset part includes an elastic member II for applying a force in the extending direction to the top rod, and when the elastic member II is in a natural state, the top rod is in the extended position.

7. The stop device according to any one of claims 1-4, 6, characterized in that A stop block is further arranged at the lower end of the second part and abuts against the wheel surface of the traveling wheel of the overhead crane. The stop block has a stop surface capable of abutting against the wheel surface of the traveling wheel, and the stop block can swing to make the stop surface fit with the wheel surface of the traveling wheel.

8. The stop device according to claim 7, characterized in that, The lower end of the second part has an arc surface gradually inclined away from the stop block on the side close to the stop block.

9. The stop device according to any one of claims 1-4, 6, and 8, characterized in that, The distance between the upper end of the first rod body and the fixed axis is less than the distance between the lower end of the first rod body and the fixed axis.

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

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