Locking device and gate

Abstract

The invention provides a locking device and a gate, and relates to the technical field of nuclear power equipment. The gate comprises a gate body and a locking device, and the locking device is used for driving the gate body to be opened and closed. The locking device comprises a base, and a driving part, a transmission part and an output gear which are arranged on the base; the driving part is rotatably arranged on the base; the driving part comprises a driving gear and a cam, and the cam and the driving gear are coaxially arranged; the transmission part comprises a transmission gear and an abutting part which are connected, the transmission gear is rotatably arranged on the base, and the transmission gear is meshed with the output gear; when the locking device is in the first state, the driving piece rotates relative to the base, the cam makes rolling contact with the abutting piece, and the driving gear is not meshed with the transmission gear. When the locking device is in the second state, the driving piece rotates relative to the base, and the driving gear drives the output gear to rotate through the transmission gear. The transmission reliability of the locking device is improved, and the energy loss of the locking device is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of nuclear power equipment, and in particular to locking devices and gates. Background Art

[0002] The containment in a pressurized water reactor nuclear power plant can separate the reactor from the external environment and prevent radioactive substances from spreading to the external environment through air, water or other means. The gate is the access channel for operators and maintenance personnel to enter and exit the containment, and can also transport some tools and small equipment.

[0003] The gate is mainly composed of a door body, a locking device, a bolt and other mechanisms. The locking device can drive the door body to open and close. After the door body is closed, the bolt needs to be fastened to prevent the gate from being accidentally opened. When opening the gate, the bolt needs to be opened first, and the door body does not move at this time. This is usually achieved through the intermittent movement of the locking device. Convex arcs and concave arcs are set on different transmission gears respectively, and the intermittent movement of the locking device is achieved by sliding the convex arc in the concave arc.

[0004] However, the convex arc and the concave arc are sliding frictions, and the friction force generated between the two is large, which will cause the gear clearance to increase and lead to poor reliability of the locking device. Summary of the invention

[0005] The embodiments of the present application provide a locking device and a gate to solve the problem of poor reliability of the locking device.

[0006] In one aspect, an embodiment of the present application provides a locking device, comprising a base, and an active member, a transmission member, and an output gear disposed on the base;

[0007] The active member is rotatably arranged on the base; the active member includes a driving gear and a cam, and the cam and the driving gear are coaxially arranged;

[0008] The transmission member comprises a transmission gear and an abutment member connected to each other, the transmission gear is rotatably arranged on the base, and the transmission gear is meshed with the output gear;

[0009] When the locking device is in the first state, the active member rotates relative to the base, the cam and the abutment member are in rolling contact, and the active gear is not meshed with the transmission gear;

[0010] When the locking device is in the second state, the active member rotates relative to the base, and the active gear drives the output gear to rotate through the transmission gear.

[0011] In some embodiments of the present application, during the rotation of the active member relative to the base, the cam has a first angle and a second angle, and the first angle is greater than the second angle;

[0012] When the angle of the cam is greater than or equal to the first angle, the cam and the abutment member are in rolling contact, and the driving gear is not meshed with the transmission gear;

[0013] When the angle of the cam is less than or equal to the second angle, the cam is not in contact with the abutment member, and the driving gear is meshed with the transmission gear.

[0014] In some embodiments of the present application, when the angle of the cam is greater than the second angle and less than the first angle, the locking device is in the third state;

[0015] The cam is not in contact with the abutment member, and the driving gear is not meshed with the transmission gear.

[0016] In some embodiments of the present application, the cam is provided with a first end surface, and when the abutment member is located in the plane where the first end surface is located, the cam is at a third angle;

[0017] The third angle is greater than the second angle, and the third angle is smaller than the first angle.

[0018] In some embodiments of the present application, during the rotation of the active member relative to the base, the cam has a set angle;

[0019] When the angle of the cam is greater than or equal to the set angle, the cam and the abutment member are in rolling contact, and the driving gear is not meshed with the transmission gear;

[0020] When the angle of the cam is smaller than the set angle, the cam does not contact the abutment member, and the driving gear meshes with the transmission gear.

[0021] In some embodiments of the present application, the number of the abutment members is multiple;

[0022] When the locking device is in the first state, the plurality of abutment members are arranged in sequence around the rotation axis of the active member, and the plurality of abutment members are all in contact with the cam.

[0023] In some embodiments of the present application, the abutment member is rotatably disposed on the transmission gear, and the rotation axis of the abutment member is disposed parallel to the rotation axis of the active member.

[0024] In some embodiments of the present application, the active member includes a position adjusting member, and the position adjusting member abuts against the side surface of the cam;

[0025] The adjusting piece is installed on the driving gear, and the adjusting piece is adjusted along the radial direction of the driving gear, so that the cam changes its position.

[0026] In some embodiments of the present application, the driving gear is fixed to the rotating shaft of the driving member through a tension sleeve.

[0027] On the other hand, an embodiment of the present application provides a gate, including a door body and a locking device as described above, wherein the locking device is used to drive the door body to open and close.

[0028] The gate provided by the embodiment of the present application comprises a door body and a locking device, and the locking device is used to drive the door body to open and close. The locking device comprises a base and an active member, a transmission member and an output gear arranged on the base. The active member is rotatably arranged on the base, and the active member comprises a driving gear and a cam, and the cam and the driving gear are arranged coaxially. The transmission member comprises a connected transmission gear and an abutment member, and the transmission gear is rotatably arranged on the base, and the transmission gear is meshed with the output gear. When the locking device is in a first state, the active member rotates relative to the base, the active gear is not meshed with the transmission gear, and the transmission gear does not transmit torque. The cam and the abutment member are in rolling contact, the transmission gear is in a locked state, and another transmission component connected to the active member can open or close the bolt. When the locking device is in a second state, the active member rotates relative to the base, the active gear drives the output gear to rotate through the transmission gear, and the output gear rotates to output torque to drive the door body to open and close. When the transmission gear is in a locked state, the friction can be reduced by rolling contact between the cam and the abutment member, and the risk of increasing the gap between the active gear and the transmission gear can be reduced, thereby improving the reliability of the transmission of the locking device. Furthermore, such an arrangement reduces the friction between the cam and the abutment, thereby reducing the wear of the cam and the abutment, extending the service life of the cam and the abutment, and reducing the energy loss of the locking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0030] Figure 1 A schematic diagram of the top view of the locking device provided in an embodiment of the present application;

[0031] Figure 2 A schematic diagram of the front view structure of the locking device provided in an embodiment of the present application;

[0032] Figure 3 A schematic diagram of the structure of a locking device provided in an embodiment of the present application with a cam located at a first angle;

[0033] Figure 4 for Figure 2 A local enlarged view of point A;

[0034] Figure 5 A schematic structural diagram of a locking device with a cam located at a second angle provided in an embodiment of the present application.

[0035] Reference numerals:

[0036] 1- Locking device;

[0037] 10- base;

[0038] 20-active parts;

[0039] 210-driving gear; 211-rotating shaft of driving member; 220-cam; 230-position adjusting member; 240-tensioning sleeve;

[0040] 30- transmission parts;

[0041] 310-transmission gear; 311-rotation shaft of the transmission member; 320-abutment member; 321-rotation shaft of the abutment member;

[0042] 40-output gear;

[0043] 410 - output rotating shaft;

[0044] 50-Electromagnetic clutch;

[0045] a1-first angle; a2-second angle; b-fourth angle.

[0046] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0047] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0048] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0049] The gate is mainly composed of a door body, a locking device, a bolt and other mechanisms. In order to ensure the safety of the gate, the door body is usually set thicker, and the door body is driven to open and close by a locking device. In order to ensure the safety and reliability of the gate when it is closed, the bolt needs to be buckled after the gate is closed to prevent the gate from being accidentally opened. When opening the gate, the bolt needs to be opened first, and the door body does not move at this time. This is usually achieved through the intermittent movement of the locking device.

[0050] Specifically, an incomplete gear mechanism is provided in the locking device, and the incomplete gear mechanism includes a first gear and a second gear, a convex arc is provided on the first gear, and a concave arc is provided on the second gear. When the door body is opened, at this time, the door bolt has been opened. By rotating the first gear, the second gear is driven to rotate, and the torque can be transmitted to the door body to drive the door body to open. When the door bolt is opened, the door body is still in a locked state. The convex arc of the first gear and the second gear slides on the concave arc, and the rotation of the second gear is locked by the first gear. Another transmission component connected to the first gear opens the door bolt, and the second gear is locked, and no torque is output to the door body. With this arrangement, intermittent motion in the locking device is realized. However, the convex arc and the concave arc are sliding frictions, and the friction generated between the two is large, which will cause the gear gap to increase and affect the reliability of the locking device.

[0051] In view of this, the gate provided in the embodiment of the present application includes a door body and a locking device, and the locking device is used to drive the door body to open and close. Among them, the locking device includes a base and an active member, a transmission member and an output gear arranged on the base. The active member can be rotatably arranged on the base, and the active member includes a driving gear and a cam, and the cam and the driving gear are coaxially arranged. The transmission member includes a connected transmission gear and an abutment member, and the transmission gear can be rotatably arranged on the base, and the transmission gear is meshed with the output gear. When the locking device is in a first state, the active member rotates relative to the base, the active gear is not meshed with the transmission gear, and the transmission gear does not transmit torque. The cam is in rolling contact with the abutment member, the transmission gear is in a locked state, and another transmission component connected to the active member can open or close the bolt. When the locking device is in a second state, the active member rotates relative to the base, and the active gear drives the output gear to rotate through the transmission gear, and the output torque is output through the rotation of the output gear to drive the door body to open and close. When the transmission gear is in a locked state, the cam and the abutment are in rolling contact, which can reduce friction and reduce the risk of increased clearance between the driving gear and the transmission gear, thereby improving the reliability of the locking device transmission. In addition, such a configuration reduces the friction between the cam and the abutment, thereby reducing the wear of the cam and the abutment, extending the service life of the cam and the abutment, and reducing the energy loss of the locking device.

[0052] The locking device is described in detail below.

[0053] Reference Figure 1 As shown, the embodiment of the present application provides a locking device 1, which is used to open and close the door body of the gate. The locking device 1 includes a base 10, which is used to support and fix components (such as rotating shafts, gears, etc.), and can provide a mounting platform to ensure the normal operation of the components. The base 10 can be set at different positions of the gate according to actual needs. Multiple bases 10 can be set to meet the support requirements of different components.

[0054] The active member 20, the transmission member 30 and the output gear 40 can be arranged on the base 10. For example, the active member 20 can be installed on the base 10 through the rotating shaft 211 of the active member. The transmission member 30 can be arranged on another base 10 through the rotating shaft 311 of the transmission member, and the output gear 40 is also arranged on another base 10 through the output rotating shaft 410. Such an arrangement can reduce the mechanical interference between the active member 20, the transmission member 30 and the output gear 40, allowing one of them to be optimized and adjusted independently, and can improve the flexibility and adaptability of the locking device 1.

[0055] Combination Figure 1 and Figure 2 As shown, the active member 20 includes a driving gear 210 and a cam 220, and the cam 220 and the driving gear 210 are coaxially arranged. The driving gear 210 can be set as an incomplete gear. In other words, part of the circumference of the driving gear 210 is provided with gear teeth, which can realize the transmission of torque. Part of the circumference of the driving gear 210 can be set as an arc, and this arc section does not mesh with the transmission member 30, so that the locking device 1 can realize intermittent motion.

[0056] The cam 220 is installed at a position corresponding to the arc of the driving gear 210. The cam 220 is used to abut against other parts, thereby preventing other parts from rotating freely and putting other parts in a locked state.

[0057] The active member 20 is rotatably disposed on the base 10. For example, the active member 20 includes a rotating shaft 211 of the active member, and the active gear 210 is installed on the rotating shaft 211 of the active member through interference fit. The rotating shaft 211 of the active member is penetrated by a bearing and is installed on the base 10 through the bearing, so that the active member 20 can withstand a large load and torque.

[0058] The transmission member 30 includes a transmission gear 310 and an abutment member 320 connected to each other. The transmission gear 310 is meshed with the output gear 40, and the transmission gear 310 is rotatably disposed on the base 10, so that the transmission gear 310 can transmit the torque and output it through the output gear 40. The abutment member 320 is rotatably disposed on the transmission gear 310 and can abut against the cam 220.

[0059] In some embodiments, the transmission member 30 includes a rotating shaft 311 of the transmission member, the transmission gear 310 is mounted on the rotating shaft 311 of the transmission member by interference fit, and the rotating shaft 311 of the transmission member is mounted on the base 10 through a bearing. Similarly, the output gear 40 is arranged on the output rotating shaft 410, the transmission gear 310 is mounted on the output rotating shaft 410 by interference fit, and the output rotating shaft 410 is mounted on the base 10 through a bearing. The transmission gear 310 meshes with the output gear 40, transmits torque to the output gear 40, and outputs torque through the output rotating shaft 410.

[0060] The output gear 40 is connected to the electromagnetic clutch 50 via the output rotating shaft 410 , and the electromagnetic clutch 50 is connected to the rotating shaft of the door body, and can open and close the door body. The relationship between the output rotating shaft 410 and the state of the door body can be adjusted by the electromagnetic clutch 50 .

[0061] In some embodiments, the abutment member 320 may be configured as a roller sleeve. The roller sleeve is provided with a cylindrical surface, which can fully contact with the cam 220, reduce friction and wear during contact, and reduce energy consumption of the locking device 1.

[0062] When the cam 220 is in rolling contact with the abutment member 320 and the driving gear 210 is not meshed with the transmission gear 310 , the state of the locking device 1 is defined as the first state.

[0063] At this time, the active member 20 rotates relative to the base 10. The active gear 210 rotates but does not mesh with the transmission gear 310. The transmission gear 310 can be locked by the abutment of the cam 220 and the abutment 320, which can prevent the transmission gear 310 from rotating (affected by factors such as inertia), and the torque is not transmitted to the door body, and the door body is locked without movement. At the same time, the cam 220 is installed on the active gear 210 and rotates with the active gear 210. The rotation of the cam 220 relies on friction to rotate the abutment 320. The cam 220 and the abutment 320 are in rolling contact.

[0064] For example, when the door body is closed and the bolt needs to be engaged, a force is applied by a hand wheel or a motor to drive the rotating shaft 211 of the active member to rotate. The active gear 210 rotates due to the rotation of the rotating shaft 211 of the active member. The active gear 210 is provided with an intermittent arc and does not mesh with the transmission gear 310. The transmission gear 310 is in a locked state through rolling contact between the cam 220 and the abutment 320, and the door body is locked without movement. The gear rack connected to the rotating shaft 211 of the active member moves to engage the bolt. This improves the accuracy and reliability of the locking device 1.

[0065] Compared with the sliding friction of the convex arc and concave arc of the gear in the traditional gate, the locking device 1 provided in the embodiment of the present application can reduce friction through the rolling contact between the cam 220 and the abutment 320, reduce the risk of increasing the gap between the driving gear 210 and the transmission gear 310, and thus improve the accuracy and reliability of the transmission. In addition, such a configuration reduces the friction between the cam 220 and the abutment 320, thereby reducing the wear of the cam 220 and the abutment 320, extending the service life of the cam 220 and the abutment 320, and reducing the energy loss of the locking device 1.

[0066] When the locking device 1 is in the second state, the active member 20 rotates relative to the base 10. The active gear 210 drives the transmission gear 310 to rotate, and the transmission gear 310 drives the output gear 40 to rotate and output torque, so that the door body opens and closes. The cam 220 is installed on the active gear 210 and changes position with the active gear 210. The abutment member 320 is installed on the transmission gear 310 and changes position with the rotation of the active gear 210. The abutment member 320 is disengaged from the cam 220 to avoid locking the transmission gear 310.

[0067] Exemplarily, when the bolt has been opened and the door needs to be opened, the driving gear 210 drives the transmission gear 310 to rotate, and the transmission gear 310 drives the output gear 40 to rotate and output torque, and the abutment member 320 is disengaged from the cam 220 to open the door.

[0068] The structure of the locking device 1 is described in detail below.

[0069] There are multiple abutment members 320. When the locking device 1 is in the first state, the transmission gear 310 is in the locked state, and multiple abutment members 320 are arranged in sequence around the rotating shaft 211 of the active member, and multiple abutment members 320 can all be in rolling contact with the cam 220. In this way, the impact and vibration during the transmission process of the locking device 1 can be dispersed, thereby enhancing the stability and reliability of the transmission of the locking device 1.

[0070] Specifically, the number of the abutment members 320 is two, which can simplify the number of parts of the locking device 1, help reduce the production cost and manufacturing difficulty of the locking device 1, and improve the production efficiency and maintainability of the locking device 1.

[0071] The abutment member 320 is provided with a rotation shaft 321 of the abutment member, and can be rotatably arranged on the transmission gear 310 through the rotation shaft 321 of the abutment member. The rotation shaft 321 of the abutment member is arranged in parallel with the rotation shaft 211 of the active member, so that the abutment member 320 and the cam 220 will not get stuck when rolling contact, ensuring the normal operation of the active gear 210 when the locking device 1 is in the first state.

[0072] In some embodiments, the rotating shaft 321 of the abutment member can be set as a roller shaft. The roller shaft is fixed to the transmission gear 310 by passing a fastener such as a bolt through the roller shaft and screwing it into the threaded hole of the transmission gear 310. The abutment member 320 can be sleeved on the roller shaft and rotate around the roller shaft. The roller shaft can withstand a large force. When the abutment member 320 is subjected to a heavy load or an impact load, the roller shaft can remain stable and will not be damaged due to excessive force. The rotating shaft 321 of the abutment member is set as a roller shaft, which can extend the life of the roller shaft and improve the reliability of the locking device 1.

[0073] In addition, the position of the abutment member 320 can be fine-tuned by loosening the fastener, so that the abutment member 320 and the cam 220 can be in rolling contact, thereby improving the reliability of the locking device 1.

[0074] In order to make the abutment member 320 and the cam 220 have better rolling contact, the position of the cam 220 on the driving gear 210 can also be adjusted. The driving gear 210 is provided with a plurality of elongated holes around the rotating shaft 211 of the driving member, and the cam 220 is fixed to the driving gear 210 through the elongated holes by fasteners such as bolts. The elongated holes can adjust the position of the cam 220 around the rotating shaft 211 of the driving member.

[0075] The active member 20 includes a position adjusting member 230, which abuts against the side of the cam 220 to adjust the position of the cam 220. The position adjusting member 230 is mounted on the active gear 210, and the position adjusting member 230 can be adjusted along the radial direction of the active gear 210, so that the position of the cam 220 around the rotating shaft 211 of the active member is changed, so that the abutting member 320 and the cam 220 have better rolling contact.

[0076] The active member 20 is provided with a tension sleeve 240, through which the active gear 210 can be fixed to the rotating shaft 211 of the active member to ensure that the active gear 210 operates reliably during the rotation process. The tension sleeve 240 can provide a high tightening force to ensure that the active gear 210 and the rotating shaft 211 of the active member will not loosen due to force during the rotation process, thereby ensuring the stable operation of the locking device 1.

[0077] In addition, the installation and removal of the tension sleeve 240 is relatively simple and quick, which can improve the maintenance efficiency of the mechanical system. By loosening the tension sleeve 240, the position of the active member 20 can be adjusted, and then the position of the cam 220 can be adjusted, so that the abutment member 320 and the cam 220 have better rolling contact.

[0078] The relative positions of the cam 220 and the abutment member 320 are described in detail below. For ease of description, the line connecting the transmission gear 310 and the driving gear 210 is used as the starting line of the angles in the following text.

[0079] During the rotation of the active member 20 relative to the base 10 , the angle between the side of the cam 220 away from the positioning member 230 and the starting line is defined as the angle of the cam 220 .

[0080] Combination Figure 3 , Figure 4As shown, when the gear teeth of the driving gear 210 and the transmission gear 310 just disengage, the transmission gear 310 does not rotate. At the same time, the cam 220 and the abutment 320 are in rolling contact, and there is a contact point between the cam 220 and the abutment 320. The distance between the outermost edge of the cam 220 and the contact point is 2.5 mm. The angle between the side surface of the cam 220 and the starting line at this time is defined as the first angle a1.

[0081] When the angle of the cam 220 is greater than or equal to the first angle a1, the cam 220 rolls with the abutment 320, and the driving gear 210 is not meshed with the transmission gear 310, so that the transmission gear 310 is in a locked state, which can prevent the door from moving. The rolling contact between the cam 220 and the abutment 320 reduces friction and wear, and improves the stability and reliability of the locking device 1.

[0082] When the transmission gear 310 is just disengaged and the outermost edge of the cam 220 is about to contact the abutment 320, the function of the locking device 1 can also be realized. However, due to installation errors and design errors, the transmission gear 310 is just disengaged and the outermost edge of the cam 220 is in contact with the abutment 320 without any force. Therefore, the distance between the outermost edge of the cam 220 and this contact point is 2.5 mm, which can improve the reliability of the locking device 1.

[0083] In addition, the distance between the outermost edge of the cam 220 and the contact point is 2.5 mm. When the driving gear 210 rotates clockwise, the cam 220 is not completely separated from the contact point. When the driving gear 210 and the transmission gear 310 are about to mesh, such a configuration can prevent the first gear teeth of the driving gear 210 and the transmission gear 310 from being impacted when meshing, thereby improving the reliability of the driving gear 210 and the transmission gear 310 and extending the service life of the driving gear 210 and the transmission gear 310.

[0084] In the locking device 1 , the angle between the connecting line of the two abutting members 320 and the transmission gear 310 is defined as a fourth angle b. In order to ensure reliable contact between the cam 220 and the abutting member 320 , the first angle a1 and the fourth angle b are matched.

[0085] In some embodiments, the first angle a1 can be set to 15 degrees to ensure reliable contact between the cam 220 and the abutment 320. If the first angle a1 is greater than 15 degrees, the position of the abutment 320 needs to be adjusted outward along the contour of the cam 220 to the position of the gear teeth, which may cause the gears to fail to mesh.

[0086] In some embodiments, the fourth angle b can be set to 132 degrees so that the cam 220 can reliably contact the abutment member 320. If the fourth angle b is greater than 132 degrees, the arc of the cam 220 needs to be extended, which may cause the door body to be unable to open. If the fourth angle b is less than 132 degrees, the corresponding arc of the cam 220 is short, and the bolt may not be able to be fastened or opened.

[0087] Reference Figure 5 As shown, the driving gear 210 is meshed with the transmission gear 310, and the cam 220 is about to contact with the abutment member 320 but is not in contact. The angle between the side surface of the cam 220 and the starting line is the second angle a2. The second angle a2 is smaller than the first angle a1.

[0088] When the angle of the cam 220 is less than or equal to the second angle a2, the cam 220 is not in contact with the abutment member 320, and the transmission gear 310 is not in a locked state. The driving gear 210 is meshed with the transmission gear 310, and the transmission gear 310 can rotate to drive the output gear 40 to output torque to realize the opening and closing of the door body.

[0089] In some embodiments, the second angle a2 can be set to 12 degrees so that the cam 220 can reliably contact the abutment 320. If the second angle a2 is less than 12 degrees, the cam 220 does not contact the abutment 320 when the driving gear 210 is disengaged from the transmission gear 310.

[0090] In some embodiments, when the angle of the cam 220 is greater than the second angle a2 and less than the first angle a1, the locking device 1 is in the third state.

[0091] When the gate is closed, the bolt needs to be pre-fastened after the door body is closed. At this time, the cam 220 is not in contact with the abutment member 320, and the driving gear 210 is not meshed with the transmission gear 310. In addition, there is no interaction force between the driving gear 210 and the transmission gear 310, and the installation of the driving gear 210 and the transmission gear 310 is relatively convenient, which can improve the flexibility of installation and disassembly of the locking device 1.

[0092] Specifically, the side of the cam 220 away from the position adjusting member 230 is set as the first end face of the cam 220, and when the center of the rotating shaft 321 of the abutting member is located in the plane where the first end face is located, the cam 220 is at a third angle (not shown in the figure). The third angle is greater than the second angle a2, and the third angle is less than the first angle a1. At this time, after the door body is closed, the door bolt can be pre-fastened.

[0093] Exemplarily, the third angle is set to 13.5 degrees, the driving gear 210 and the transmission gear 310 are just disengaged, and the cam 220 and the abutment member 320 are about to contact.

[0094] In other embodiments, during the rotation of the active member 20 relative to the base 10 , the gear and the transmission gear 310 just disengage, and the cam 220 just contacts the abutment member 320 , and the angle of the cam 220 at this time is set to a set angle.

[0095] When the angle of the cam 220 is greater than or equal to the set angle, the driving gear 210 is not engaged with the transmission gear 310, and will not drive the transmission gear 310 to rotate, and will not transmit torque to the output gear 40. At the same time, the cam 220 is in rolling contact with the abutment 320, and the transmission gear 310 is in a locked state, which can prevent the door body from moving. The rolling contact between the cam 220 and the abutment 320 reduces friction and wear, and improves the stability and reliability of the locking device 1. When the angle of the cam 220 is less than the set angle, the cam 220 is not in contact with the abutment 320, and will not lock the transmission gear 310. The driving gear 210 is engaged with the transmission gear 310, and the transmission gear 310 can rotate to drive the output gear 40 to output torque to realize the opening and closing of the door body. With such a configuration, the state of the locking device 1 is relatively clear, and the locking device 1 is relatively simple to install, which is convenient for the installation and maintenance of the locking device 1.

[0096] The embodiment of the present application further provides a gate, which includes a door body and a locking device 1, and the locking device 1 is used to drive the door body to open and close.

[0097] The following is a schematic diagram of the gate opening and closing process.

[0098] Gate opening process: Before the gate is opened, the angle of the cam 220 is at the maximum position. That is, at this time, the cam 220 of the active member 20 is in contact with the abutment member 320, and the active gear 210 is not meshed with the transmission gear 310.

[0099] First, a torque is provided to the locking device 1 through a hand wheel or a motor so that it acts on the rotating shaft 211 of the active member. The rotating shaft 211 of the active member rotates counterclockwise, the active gear 210 does not mesh with the transmission gear 310, and the torque is not transmitted to the transmission gear 310. The cam 220 is installed on the active gear 210 and rotates with the active gear 210, thereby rolling and connecting with the abutment 320. In this way, the transmission gear 310 can be in a locked state, the transmission gear 310 does not rotate, and will not drive the output gear 40 to rotate. The output gear 40 will not output torque, and the door body will not move. While the cam 220 rotates with the active gear 210, the rotating shaft 211 of the active member drives the incomplete gear on the other side of the shaft, the incomplete gear is connected to the rack for rotation, and the rack drives the bolt to move.

[0100] As the rotating shaft 211 of the active member continues to rotate counterclockwise, the bolt opens, and the rotating shaft 211 of the active member drives the incomplete gear on the other side of the shaft to disengage from the rack. On the other hand, the cam 220 disengages from the abutment 320, and the active gear 210 begins to engage with the transmission gear 310. The active gear 210 drives the transmission gear 310 to rotate, and the transmission gear 310 drives the output gear 40 to rotate. The output gear 40 outputs torque to the electromagnetic clutch through the output rotating shaft 410, and is connected to the rotating shaft of the door body through the electromagnetic clutch, driving the door body to open.

[0101] The process of closing the gate: When the door body is in the open state, the rotating shaft 211 of the active member is rotated clockwise by a hand wheel or a motor. The active gear 210 is meshed with the transmission gear 310, driving the transmission gear 310 to rotate, and the transmission gear 310 transmits torque to the output gear 40. The output gear 40 drives the rotating shaft of the door body through the electromagnetic clutch, and the door body is closed. At this time, the active gear 210 is disengaged from the transmission gear 310, and the transmission gear 310 will not drive the output gear 40 to output torque to move the door body. At the same time, the cam 220 and the abutment 320 begin to roll in contact.

[0102] As the rotating shaft 211 of the active member continues to rotate clockwise, on the one hand, the cam 220 rotates around the rotating shaft 211 of the active member and rolls with the abutment 320, so that the transmission gear 310 is in a locked state, and the door body remains in a closed state. On the other hand, the rotating shaft 211 of the active member drives the incomplete gear on the other side of the shaft to rotate, and the incomplete gear is connected to the rack for rotation, and the rack drives the bolt to move. Finally, the bolt is buckled. In this way, the closing process of the gate is completed.

[0103] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0104] In the description of the present application, it should be understood that the terms "including" and "having" and any variations thereof used herein are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0105] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it can be a fixed connection, it can also be a detachable connection, or it can be integrated; it can be directly connected, or it can be indirectly connected through an intermediate medium, it can make the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

[0106] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A locking device, characterized in that: It comprises a base (10), and an active component (20), a transmission component (30) and an output gear (40) arranged on the base; The active member (20) is rotatably disposed on the base (10); the active member (20) comprises a driving gear (210) and a cam (220), and the cam (220) and the driving gear (210) are coaxially disposed; The transmission member (30) comprises a transmission gear (310) and an abutment member (320) connected to each other, the transmission gear (310) is rotatably disposed on the base (10), and the transmission gear (310) is meshed with the output gear (40); When the locking device (1) is in a first state, the active member (20) rotates relative to the base (10), the cam (220) and the abutment member (320) are in rolling contact, and the active gear (210) is not meshed with the transmission gear (310); When the locking device (1) is in the second state, the active member (20) rotates relative to the base (10), and the active gear (210) drives the output gear (40) to rotate via the transmission gear (310).

2. The locking device according to claim 1, characterized in that: During the rotation of the active member (20) relative to the base (10), the cam (220) has a first angle (a1) and a second angle (a2), and the first angle (a1) is greater than the second angle (a2); When the angle of the cam (220) is greater than or equal to the first angle (a1), the cam (220) is in rolling contact with the abutment member (320), and the driving gear (210) is not meshed with the transmission gear (310); When the angle of the cam (220) is less than or equal to the second angle (a2), the cam (220) is not in contact with the abutment member (320), and the driving gear (210) is meshed with the transmission gear (310).

3. The locking device according to claim 2, characterized in that: When the angle of the cam (220) is greater than the second angle (a2) and less than the first angle (a1), the locking device (1) is in a third state; The cam (220) is not in contact with the abutment member (320), and the driving gear (210) is not meshed with the transmission gear (310).

4. The locking device according to claim 3, characterized in that: The cam (220) is provided with a first end surface, and when the abutment member (320) is located on the plane where the first end surface is located, the cam (220) is at a third angle; The third angle is greater than the second angle (a2), and the third angle is smaller than the first angle (a1).

5. The locking device according to claim 1, characterized in that: During the rotation of the active member (20) relative to the base (10), the cam (220) has a set angle; When the angle of the cam (220) is greater than or equal to the set angle, the cam (220) and the abutment member (320) are in rolling contact, and the driving gear (210) is not meshed with the transmission gear (310); When the angle of the cam (220) is smaller than the set angle, the cam (220) does not contact the abutment member (320), and the driving gear (210) is meshed with the transmission gear (310).

6. The locking device according to any one of claims 1 to 5, characterized in that: The number of the abutment members (320) is plural; When the locking device (1) is in the first state, the plurality of abutment members (320) are arranged in sequence around the rotation axis (211) of the active member, and the plurality of abutment members (320) are all in contact with the cam (220).

7. The locking device according to claim 6, characterized in that: The abutment member (320) is rotatably disposed on the transmission gear (310), and the rotation axis (321) of the abutment member is disposed in parallel with the rotation axis (211) of the active member.

8. The locking device according to any one of claims 1 to 5, characterized in that: The active member (20) comprises a position adjusting member (230), and the position adjusting member (230) abuts against a side surface of the cam (220); The position adjusting member (230) is installed on the driving gear (210); the position adjusting member (230) is adjusted radially along the driving gear (210), and the cam (220) changes its position.

9. The locking device according to claim 1, characterized in that: The driving gear (210) is fixed on the rotating shaft (211) of the driving member through a tension sleeve (240).

10. A gate, characterized in that: It comprises a door body and the locking device according to any one of claims 1 to 9, wherein the locking device (1) is used to drive the door body switch.

Images