Emergency stop device
By optimizing the contact part design and push arm structure of the pusher in the emergency stop device, the problem of unreliable separation between the moving contact and the static contact is solved, the reliable separation of the moving contact and the static contact is achieved, and the working reliability and safety of the emergency stop device are improved.
Patent Information
- Application Number
- CN202422711430.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-06
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-11-06
AI Technical Summary
In existing emergency stop devices, the separation between the moving contact and the static contact is unreliable or the separation distance is short, which easily leads to safety hazards.
By designing the angle between the normal line of the action surface of the contact part between the push member and the push arm and the action line of the push arm to be less than 45 degrees, the angle is limited to reduce the torque on the push arm. Combined with the structural optimization of the push arm and the bracket, such as the V-shaped cross-section and spherical contact, the strength of the push arm is enhanced to ensure reliable separation of the moving contact and the static contact.
It effectively avoids bending and deformation of the bracket, ensures reliable separation of the moving contact and the static contact, and improves the working reliability and safety of the emergency stop device.
Smart Images
Figure CN223486874U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of industrial control technology, and in particular to an emergency stop device. Background Technology
[0002] An emergency stop device is a safety device used to quickly cut off the power supply to equipment or stop its operation in an emergency.
[0003] An emergency stop device generally includes a contact assembly and an emergency stop assembly. The contact assembly consists of a moving contact and a stationary contact, which are normally closed. The emergency stop assembly includes a pusher and a push arm. In an emergency, when it is necessary to cut off the power to the equipment, the pusher acts on the push arm, which pushes the moving contact and the stationary contact apart, thereby cutting off the power to the equipment.
[0004] Existing emergency stop devices have technical problems such as unreliable separation of the moving contact and the stationary contact or short separation distance, which can easily lead to safety hazards. Utility Model Content
[0005] This application provides an emergency stop device that can improve the technical problem of unreliable separation between the moving contact and the stationary contact, thereby enhancing the operational reliability of the emergency stop device.
[0006] The technical solution of this application is as follows:
[0007] The emergency stop device provided in this application includes a contact assembly and an emergency stop component. The contact assembly includes a moving contact and a stationary contact. The moving contact includes a bracket and a moving contact point. The bracket extends along a first direction, and the moving contact point is fixed to one side of the bracket in a second direction. The first direction is perpendicular to the second direction.
[0008] The stationary contact includes a stationary contact point, which is fixed to one side of the moving contact point and is opposite to the moving contact point.
[0009] The emergency stop assembly includes a pusher and a push arm. The pusher is located on the side of the bracket near the stationary contact. The pusher is movable in a first direction and includes an action surface.
[0010] Along the second direction, the push arm is located between the pusher and the bracket. One end of the push arm is fixedly connected to the bracket, and the other end of the push arm is used to contact the working surface.
[0011] Under normal conditions, the moving contact is in contact with the stationary contact, and the working surface is separated from the push arm.
[0012] When an emergency stop is required, the pushed component moves along the first direction, and the action surface contacts the push arm. At the contact position, the angle between the normal of the action surface and the action line of the push arm is less than 45 degrees. The pushed component pushes the bracket to tilt away from the pushed component through the push arm, so that the moving contact and the stationary contact are separated.
[0013] The emergency stop device provided in this application limits the angle between the normal to the contact surface of the pusher and the push arm and the line of action of the push arm to less than 45 degrees. Thus, when an emergency stop is required, the force perpendicular to the line of action of the push arm is smaller under external force, resulting in a smaller torque acting on the push arm, thereby preventing the bracket from bending or deforming towards the stationary contact. Furthermore, the force along the line of action of the push arm is larger; this force acts on the bracket, causing it to tilt away from the stationary contact, reliably separating the moving contact from the stationary contact.
[0014] In one possible design, the angle between the normal to the action surface and the action line of the push arm is 0 degrees.
[0015] In the emergency stop device provided by this embodiment, the angle between the normal of the action surface and the action line of the push arm is 0 degrees. When an external force is applied to the push member, ignoring friction, the force perpendicular to the action line is 0. Therefore, the torque acting on the push arm is 0, and the bracket has no driving force to bend to the left. Under the action of a larger force along the action line of the push arm, the bracket is more likely to tilt to the right, thus reliably separating the moving contact and the stationary contact.
[0016] In one possible design, along a first direction, the bracket includes a fixed end and a free end, with a movable contact fixed between the fixed end and the free end, and the movable contact being closer to the free end. The connection between the push arm and the bracket is close to the fixed end.
[0017] In the emergency stop device provided by this embodiment, the moving contact is located near the free end, and the connection part between the push arm and the bracket is near the fixed end. As a result, the distance between the point of action of the push arm on the bracket and the moving contact is relatively large. Thus, a small tilt of the bracket at the point of action will be amplified at the moving contact, which is beneficial to the reliable separation of the moving contact and the stationary contact.
[0018] In one possible design, the push arm is a plate-like component, comprising a push arm body and a bent portion.
[0019] Along the first direction, the bent portion bends to one side relative to the push arm body. One end of the push arm body is fixedly connected to the bracket, and the other end of the push arm body is connected to the bent portion, which contacts the working surface. The bent portion enhances the strength of the push arm.
[0020] In one possible design, the push arm body is cut along a first direction, and the cross-section of the push arm body is V-shaped, with the opening of the V-shape facing the side of the bracket fixing end.
[0021] The emergency stop device provided by this embodiment has a V-shaped cross-section for the push arm body, with the opening of the V-shape facing the fixed end of the bracket. This results in better overall strength of the push arm body, making it less prone to deformation when subjected to force. This allows for better force transmission and effective action on the bracket, separating the moving contact from the stationary contact.
[0022] In one possible design, the surface of the bend includes a spherical surface, and the working surface contacts the spherical surface of the bend at a point.
[0023] In the emergency stop device provided by this embodiment, during an emergency stop, the pushing member needs to move downwards, pushing the push arm to the right. During this process, the contact area between the first inclined surface and the push arm changes. The working surface contacts the spherical surface of the bent portion, and this is a point contact. Thus, the contact area between the working surface and the push arm is small, which facilitates the movement of the pushing member, and further facilitates the pushing member pushing the push arm to the right. Furthermore, since the working surface and the push arm are in point contact, the wear on the working surface and the push arm is relatively less under long-term use.
[0024] In one possible design, the action surface is a circular arc. Compared to an inclined plane, a circular arc provides a better rightward pushing force on the push arm, and the downward pressure exerted by the circular arc on the push arm is also more moderate.
[0025] In one possible design, the support and push arm are integrated into one structure.
[0026] The emergency stop device provided in this embodiment allows the support and push arm to be made from the same piece of metal. The push arm is formed by stamping the metal sheet and then bending it. The support and push arm are an integral structure, which is characterized by simple manufacturing process and low cost.
[0027] In one possible design, the fixed end is also provided with mounting holes for fixing the bracket, thus facilitating the installation of the bracket. Attached Figure Description
[0028] Figure 1 The diagram shown is a structural schematic of an emergency stop device provided by the prior art in its normal state.
[0029] Figure 2 for Figure 1 The diagram shows the structure of the emergency stop device in the emergency stop state.
[0030] Figure 3 for Figure 1 The diagram shows the combined structure of the moving contact and the push arm in the emergency stop device.
[0031] Figure 4 for Figure 1 , Figure 2 The force analysis diagram of the push arm in the structure shown.
[0032] Figure 5 for Figure 1 , Figure 2 Another force analysis diagram of the push arm in the structure shown.
[0033] Figure 6 This is a schematic diagram of the structure of an emergency stop device provided in the present application under normal conditions.
[0034] Figure 7 for Figure 6 The diagram shows the structure of the emergency stop device in the emergency stop state.
[0035] Figure 8 for Figure 6 The diagram shows the combined structure of the moving contact and the push arm in the emergency stop device.
[0036] Figure 9 for Figure 6 , Figure 7 The force analysis diagram of the push arm in the structure shown.
[0037] Figure 10 for Figure 6 , Figure 7 Another force analysis diagram of the push arm in the structure shown.
[0038] The reference numerals in the prior art are:
[0039] A1, Moving contact; A11, Support; A12, Moving contact;
[0040] A2, stationary contact; A21, stationary contact point;
[0041] A3, Pushing component; A321, Acting surface;
[0042] A4. Push arm;
[0043] The reference numerals in this application are:
[0044] B1, Moving contact; B11, Bracket; B111, Fixed end; B1111, Mounting hole; B112, Free end; B12, Moving contact;
[0045] B2, stationary contact; B21, stationary contact point;
[0046] B3, Pushing component; B31, Operating end; B32, Push block; B321, Working surface;
[0047] B4, Push arm; B41, Push arm body; B42, Bending section;
[0048] B5. Shell;
[0049] D1, first direction; D2, second direction. Detailed Implementation
[0050] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.
[0051] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The terms "comprising" and "having," and any variations thereof, in the specification, claims, and drawings of this application are intended to cover non-exclusive inclusion.
[0052] References to "embodiments" herein mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiment" in various places in the specification does not necessarily refer to the same embodiment, nor does it necessarily refer to independent or alternative embodiments that are mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.
[0053] The terms "first," "second," etc., in the specification, claims, or the accompanying drawings of this application are used to distinguish different objects, rather than to describe a specific order.
[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by spacers, screws, bolts, or other spacers. A physical connection can also be a detachable connection, such as a snap-fit or interlocking connection. A physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0055] The present application will be described in detail below with reference to the accompanying drawings.
[0056] Figure 1The diagram shown is a structural schematic of an emergency stop device provided by the prior art in its normal state. Figure 2 for Figure 1 The diagram shown illustrates the structure of the emergency stop device in the emergency stop state. Figure 3 for Figure 1 The diagram shows the combined structure of the moving contact and the push arm in the emergency stop device.
[0057] Please refer to Figure 1 , Figure 2 and Figure 3 In the prior art, the emergency stop device includes a contact assembly and an emergency stop component. The contact assembly includes a moving contact A1 and a stationary contact A2. The moving contact A1 includes a support A11 and a moving contact A12. The support A11 extends vertically, and the moving contact A12 is fixed to one side of the support A11 in the horizontal direction.
[0058] The stationary contact A2 includes a stationary contact A21, which is fixed to one side of the moving contact A12 and is opposite to the moving contact A12.
[0059] The emergency stop assembly includes a pusher A3 and a push arm A4. The pusher A3 is located on the side of the bracket A11 near the stationary contact A21. The pusher A3 can move in the vertical direction and includes an action surface A321.
[0060] Horizontally, push arm A4 is located between push member A3 and bracket A11. Push arm A4 includes a push arm A4, one end of which is fixedly connected to bracket A11, and the other end of which is used to contact the working surface A321. The extension direction of push arm A4 is obliquely downward.
[0061] Please refer to Figure 1 Under normal conditions, the moving contact A12 of the emergency stop device is in contact with the stationary contact A21, and the action surface A321 is separated from the push arm A4. Please refer to [reference needed]. Figure 2 When an emergency stop is required, the driven component A3 moves vertically, and the action surface A321 contacts the push arm A4. The action surface A321 pushes the support A11 through the push arm A4 to deform in a direction away from the driven component A3, thereby separating the moving contact A12 from the stationary contact A21. The action surface A321 can be an inclined surface or a curved surface. When the action surface A321 is a curved surface, the tangential surface of the curved surface is an inclined surface.
[0062] Figure 1 , Figure 2 The emergency stop device shown exhibits an unreliable separation issue during use, where the moving contact A12 of the moving contact A1 and the stationary contact A21 of the stationary contact A2 fail to separate reliably.
[0063] Based on this, the inventors of this application took the push arm A4 as the research object and analyzed the force situation of the push arm A4 as follows.
[0064] Figure 4 for Figure 1 , Figure 2 Please refer to the force analysis diagram of the push arm in the structure shown. Figure 4 The contact point between the action surface A321 and the push arm A4 is point a. The fixed position of the push arm A4 and the bracket A11 is simplified to point b. The line of action of the push arm A4 is ab. When the external force F acts on the pusher A3, the frictional force F0 is ignored. Point a includes the leftward force F2 and the downward force F1. The resultant force of the leftward force F2 and the downward force F1 is F3. Since the angle α1 between F3 and ab is relatively large.
[0065] Figure 5 for Figure 1 , Figure 2 Please refer to another force analysis diagram of the push arm in the structure shown. Figure 5 The contact point between the action surface A321 and the push arm A4 is point a. The fixed position of the push arm A4 and the bracket A11 is simplified to point b. The line of action of the push arm A4 is ab. When the external force F acts on the pusher A3, the frictional force F0 is ignored. The force at point a is F3. The direction of F3 is along the normal direction of the action surface A321. The force decomposes F3 into force: the force along the line of action ab is F4, and the force perpendicular to the line of action ab is F5.
[0066] When the angle α1 between F3 and ab is too large, such as greater than 45°, F4 will be less than F5. At this time, the torque on the push arm A4 is large, causing the bracket A11 to bend and deform, and the moving contact A12 to move to the left. In some cases, the moving contact A12 cannot separate from the stationary contact A21, resulting in emergency stop failure.
[0067] By analyzing the force on the push arm in existing emergency stop devices, this application provides an emergency stop device with an alternative structure. Figure 6 This is a schematic diagram of the structure of an emergency stop device in its normal state, as provided in an embodiment of this application. Figure 7 for Figure 6 The diagram shown illustrates the structure of the emergency stop device in the emergency stop state. Figure 8 for Figure 6 The diagram shows the combined structure of the moving contact and the push arm in the emergency stop device.
[0068] Please refer to Figures 6 to 8 The emergency stop device provided in this application includes a contact assembly and an emergency stop component. The contact assembly includes a moving contact B1 and a stationary contact B2.
[0069] The moving contact B1 includes a bracket B11 and a moving contact B12. The bracket B11 extends along a first direction D1, and the moving contact B12 is fixed to one side of the bracket B11 in a second direction D2. The first direction D1 and the second direction D2 are perpendicular to each other. The stationary contact B2 includes a stationary contact B21, which is fixed to one side of the moving contact B12 and is opposite to the moving contact B12.
[0070] The emergency stop assembly includes a pusher B3 and a push arm B4. The pusher B3 is located on the side of the bracket B11 near the stationary contact B21. The pusher B3 is movable along the first direction D1 and includes an action surface B321.
[0071] Along the second direction D2, the push arm B4 is located between the pusher B3 and the bracket B11. One end of the push arm B4 is fixedly connected to the bracket B11, and the other end of the push arm B4 is used to contact the working surface B321.
[0072] Under normal conditions, the moving contact B12 is in contact with the stationary contact B21, and the working surface B321 is separated from the push arm B4.
[0073] When an emergency stop is required, the pushed component B3 moves along the first direction D1, and the action surface B321 contacts the push arm B4. At the contact position, the angle between the normal of the action surface B321 and the action line of the push arm B4 is less than 45 degrees. The pushed component B3 pushes the bracket B11 to deform in a direction away from the pushed component B3 through the push arm B4, so that the moving contact B12 separates from the stationary contact B21.
[0074] To simplify the description and facilitate understanding, descriptions such as vertical direction, horizontal direction, up, down, left, and right are used in the description of this application. Such descriptions are based on the orientation shown in the current figure and can represent one state of use of this application, but do not mean that this application can only be used in this orientation.
[0075] Please continue to refer to Figure 6 The emergency stop device provided in this application generally also includes a housing B5. Vertically, the pushing member B3 includes an operating end B31 and a push block B32. The operating end B31 is located outside the housing B5, and the push block B32 is located inside the housing B5. The push block B32 has an action surface B321, which can be an arc surface or an inclined surface. When the action surface B321 is an arc surface, the tangential surface of the arc surface is an inclined surface. Under normal conditions, the push block B32 is located at an obliquely upper position on the push arm B4. The moving contact B12 is in contact with the stationary contact B21.
[0076] Please refer to Figure 7 and Figure 8During an emergency stop, pressing the operating end B31 causes the push block B32 to move downwards. The action surface B321 of the push block B32 contacts the push arm B4, and at the contact position, the angle between the normal of the action surface B321 and the action line of the push arm B4 is less than 45 degrees. The pusher B3 pushes the bracket B11 to tilt away from the pusher B3 through the push arm B4, causing the moving contact B12 to separate from the stationary contact B21.
[0077] Figure 9 for Figure 6 , Figure 7 Please refer to the force analysis diagram of the push arm in the structure shown. Figure 9 The contact point between the action surface B321 and the push arm B4 is point a′. The fixed position of the push arm B4 and the bracket B11 is simplified to point b′. The line of action of the push arm B4 is a′b′. When the external force F′ acts on the pusher B3, the frictional force F0′ is ignored. Point a′ includes the leftward force F2′ and the downward force F1′. The resultant force of the leftward force F2′ and the downward force F1′ is F3′. Since the angle α2 between F3′ and a′b′ is small.
[0078] Figure 10 for Figure 6 , Figure 7 Please refer to another force analysis diagram of the push arm in the structure shown. Figure 10 The contact point between the action surface B321 and the push arm B4 is point a′. The fixed position of the push arm B4 and the bracket B11 is simplified to point b′. The line of action of the push arm B4 is a′b′. When the external force F′ acts on the pusher B3, the frictional force F0′ is ignored. The force at point a′ is F3′. The direction of F3′ is along the normal direction of the action surface B321. The force decomposes F3′. The force along the line of action a′b′ is F4′, and the force perpendicular to the line of action a′b′ is F5′.
[0079] When the angle α2 between F3′ and a′b′ is less than 45°, F4′ will be greater than F5′. At this time, the magnitude of the torque on the push arm B4 depends on F5′. Since F5′ is smaller, the torque on the push arm B4 is smaller, and the bending deformation of the bracket B11 to the left is smaller. Under the action of the larger F4′, the bracket B11 is more likely to tilt to the right. In this way, the moving contact B12 and the stationary contact B21 can be reliably separated.
[0080] In summary, this application limits the angle between the normal of the contact surface B321 of the pusher B3 and the line of action of the pusher B4 and makes this angle less than 45 degrees. Thus, when an emergency stop is required, the force perpendicular to the line of action of the pusher B4 is smaller under external force, resulting in a smaller torque acting on the pusher B4, thereby preventing the bracket B11 from bending and deforming towards the stationary contact B21. Furthermore, the force along the line of action of the pusher B4 is larger; this force acts on the bracket B11, causing it to tilt away from the stationary contact B21, allowing the moving contact B12 to reliably separate from the stationary contact B21.
[0081] Please refer to point 7. Figure 8 and Figure 10 In some embodiments of this application, the angle between the normal of the action surface B321 and the action line of the push arm B4 is 0 degrees.
[0082] For details, please refer to [link / reference]. Figure 8 and Figure 10 In some embodiments of this application, the angle between the normal of the action surface B321 and the action line of the push arm B4 is 0 degrees. When the external force F′ acts on the push member B3, the frictional force F0′ is ignored, the force at point a′ is F3′, and the force on the push arm B4 is only F4′ along the action line of the push arm B4. The force F5′ perpendicular to the action line a′b′ is 0. Since F5′ is 0, the torque acting on the push arm B4 is 0, and the bracket B11 has no driving force to bend to the left. Under the action of the larger F4′, the bracket B11 is more likely to tilt to the right. In this way, the moving contact B12 and the stationary contact B21 can be reliably separated.
[0083] Please continue to refer to this. Figure 7 , Figure 8 and Figure 10 In some embodiments of this application, along the first direction D1, the bracket B11 includes a fixed end B111 and a free end B112, and a movable contact B12 is fixed between the fixed end B111 and the free end B112, with the movable contact B12 close to the free end B112. The connection portion between the push arm B4 and the bracket B11 is close to the fixed end B111.
[0084] Specifically, in some embodiments of this application, the moving contact B12 is positioned close to the free end B112, and the connection between the push arm B4 and the bracket B11 is close to the fixed end B111. Thus, the distance between the point of action b′ of the push arm B4 on the bracket B11 and the moving contact B12 is relatively large. Therefore, when the force F4′ is applied to point b′, the slight tilt of the bracket B11 at point b′ will be amplified at the moving contact B12, which is beneficial to the reliable separation of the moving contact B12 and the stationary contact B21.
[0085] Please continue to refer to this. Figures 6 to 8In some embodiments of this application, the push arm B4 is a plate-shaped component, and the push arm B4 includes a push arm body B41 and a bent portion B42.
[0086] Along the first direction D1, the bent portion B42 bends to one side relative to the push arm body B41. One end of the push arm body B41 is fixedly connected to the bracket B11, and the other end of the push arm body B41 is connected to the bent portion B42. The bent portion B42 is in contact with the working surface B321.
[0087] Specifically, the push arm B4 of this application is formed by machining a metal plate, which is relatively thin and has limited strength. The push arm B4 of this application also includes a bending portion B42. In one embodiment, the bending portion B42 is formed by bending the push arm B4, and the provision of the bending portion B42 can enhance the strength of the push arm B4.
[0088] Please continue to refer to this. Figures 6 to 8 In some embodiments of this application, the push arm body B41 is cut along the first direction D1, and the cross section of the push arm body B41 is V-shaped, with the opening of the V-shape facing the side of the fixed end B111 of the bracket B11.
[0089] Specifically, the push arm body B41 has a V-shaped cross-section, with the opening of the V-shape facing the fixed end B111 of the bracket B11. This improves the overall strength of the push arm body B41, making it less prone to deformation when subjected to force. This allows for better force transmission and effective action on the bracket B11, separating the moving contact B12 from the stationary contact B21.
[0090] Please continue to refer to this. Figures 6 to 8 In some embodiments of this application, the surface of the bent portion B42 includes a spherical surface, and the working surface B321 contacts the spherical surface of the bent portion B42 at a point.
[0091] Specifically, during an emergency stop, the pusher B3 needs to move downwards, pushing the push arm B4 to the right. During this process, the contact area between the first inclined surface and the push arm B4 changes. The action surface B321 makes point contact with the spherical surface of the bent portion B42. This results in a smaller contact area between the action surface B321 and the push arm B4, which facilitates the movement of the pusher B3, and consequently, helps the pusher B3 push the push arm B4 to the right.
[0092] Furthermore, since the action surface B321 and the push arm B4 are in point contact, the wear of the action surface B321 and the push arm B4 will be relatively light under long-term use.
[0093] Please continue to refer to this. Figures 6 and 7In some embodiments of this application, the working surface B321 is an arc surface.
[0094] Specifically, as mentioned above, the action surface B321 can be an inclined surface or a circular arc surface. In some embodiments of this application, the action surface B321 is a circular arc surface. Compared with an inclined surface, a circular arc surface has a better rightward pushing effect on the push arm B4, and the downward pressing force of the circular arc surface on the push arm B4 is more gentle.
[0095] In some embodiments of this application, the bracket B11 and the push arm B4 are an integral structure.
[0096] Specifically, in some embodiments of this application, the bracket B11 and the push arm B4 can be made from the same metal plate. The push arm B4 is formed by stamping the metal plate and then bending it. The bracket B11 and the push arm B4 are an integral structure, which has the advantages of simple manufacturing process and low cost.
[0097] Please continue to refer to Figure 8 In some embodiments of this application, the fixed end B111 is further provided with a mounting hole B1111, which is used to fix the bracket B11.
[0098] Please combine Figure 7 and Figure 8 In this application, along the first direction D1, one end of the bracket B11 is a free end B112, and the other end of the bracket B11 is a fixed end B111. By providing a mounting hole B1111 in the fixed end B111, the bracket B11 can be fixed through the mounting hole B1111, thus facilitating the installation of the bracket B11.
[0099] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. An emergency stop device, characterized in that, Including contact components and emergency stop components; The contact assembly includes a moving contact and a stationary contact; The movable contact includes a bracket and a movable contact. The bracket extends along a first direction, and the movable contact is fixed to one side of the bracket in a second direction. The first direction is perpendicular to the second direction. The stationary contact includes a stationary contact point, which is fixed to one side of the moving contact point and is opposite to the moving contact point; The emergency stop assembly includes a pusher and a push arm. The pusher is located on the side of the bracket near the stationary contact point. The pusher is movable along the first direction and includes an action surface. Along the second direction, the push arm is located between the pusher and the bracket; One end of the push arm is fixedly connected to the bracket, and the other end of the push arm is used to contact the working surface; Under normal conditions, the moving contact is in contact with the stationary contact, and the working surface is separated from the push arm; When an emergency stop is required, the pushing member moves along the first direction, the action surface contacts the push arm, and at the contact position, the angle between the normal of the action surface and the action line of the push arm is less than 45 degrees. The pushing member pushes the bracket to tilt away from the pushing member through the push arm, so that the moving contact separates from the stationary contact.
2. The emergency stop device according to claim 1, characterized in that, The angle between the normal to the action surface and the action line of the push arm is 0 degrees.
3. The emergency stop device according to claim 1 or 2, characterized in that, Along the first direction, the bracket includes a fixed end and a free end, the movable contact is fixed between the fixed end and the free end, and the movable contact is close to the free end; the connection part of the push arm and the bracket is close to the fixed end.
4. The emergency stop device according to claim 3, characterized in that, The push arm is a plate-shaped component, and the push arm includes a push arm body and a bent portion; Along the first direction, the bent portion bends to one side relative to the push arm body, one end of the push arm body is fixedly connected to the bracket, the other end of the push arm body is connected to the bent portion, and the bent portion is in contact with the working surface.
5. The emergency stop device according to claim 4, characterized in that, The push arm body is cut along the first direction, and the cross-section of the push arm body is V-shaped, with the opening of the V-shape facing the side of the bracket fixing end.
6. The emergency stop device according to claim 4, characterized in that, The surface of the bent portion includes a spherical surface, and the working surface contacts the spherical surface of the bent portion at a point.
7. The emergency stop device according to claim 1, characterized in that, The working surface is a circular arc surface.
8. The emergency stop device according to claim 1, characterized in that, The bracket and the push arm are an integral structure.
9. The emergency stop device according to claim 1, characterized in that, The fixed end is also provided with a mounting hole, which is used to fix the bracket.