A barrier gate mechanism and a barrier gate

Abstract

The present application is applicable to the technical field of barrier gate devices, and provides a barrier gate core, which includes a bracket, a core shaft hinged to the bracket, a driver connected to the bracket, and a transmission assembly connected to the bracket; the driver can drive the core shaft to switch between a first state and a second state through the transmission assembly, and when the core shaft is in the first state, it can be switched to the second state by rotating a preset angle; when the core shaft is in the first state, it can be connected to a horizontally placed barrier rod, and when the core shaft is in the first state, it can be connected to a vertically placed barrier rod. The driver can drive the core shaft to switch between the first state and the second state through the transmission assembly. When the core shaft is in the first state and is connected to a horizontally placed barrier rod in one direction, the barrier rod is lifted when the core shaft is switched to the second state; when the core shaft is in the first state and is connected to a vertically placed barrier rod, the barrier rod falls in the other direction when the core shaft is switched to the second state, and the barrier gate core has the functions of lifting the barrier rod on the right side and lifting the barrier rod on the left side.

Description

Technical Field

[0001] This application relates to the technical field of barrier gate devices, and particularly to a barrier gate core and a barrier gate. Background Art

[0002] A barrier gate, also known as a vehicle stopper, can be controlled by a wireless remote control device or a parking lot management system to lift and lower the rod. It is a dedicated channel access management device for restricting the driving of motor vehicles on roads and is now widely used in vehicle channels such as highway toll stations and parking lot system management to manage the entry and exit of vehicles.

[0003] In some special cases, such as parking lots with tidal lanes, or campus gates with tidal lanes, or scenarios where the barrier gate needs to be installed on both the right and left sides of the channel, the barrier gate needs to have the function of lifting and lowering the rod from the right side and also from the left side. However, the barrier gate core provided by the traditional solution cannot have both the functions of lifting and lowering the rod from the right side and the left side. In the scenario where commutation is required, sometimes the barrier gate core needs to be rotated 180°, and sometimes it is necessary to redesign and manufacture the barrier gate core. Summary of the Invention

[0004] The purpose of this application is to provide a barrier gate core, aiming to solve the technical problem that the traditional barrier gate core cannot have both the functions of lifting and lowering the rod from the right side and the left side.

[0005] This application is implemented as follows. A barrier gate core includes a bracket, a core shaft hinged to the bracket, a driver connected to the bracket, and a transmission component connected to the bracket. The driver can drive the core shaft to switch between a first state and a second state through the transmission component. When the core shaft is in the first state, it can be switched to the second state by rotating a preset angle. When the core shaft is in the first state, it can be connected to a horizontally placed lever, and when the core shaft is in the first state, it can be connected to the vertically placed lever.

[0006] In an embodiment of this application, the transmission ratio between the driver and the core shaft is greater than 1.

[0007] In one embodiment of the present application, the driver includes a first gear and a drive motor connected to the first gear and capable of driving the first gear to rotate; the transmission assembly includes a second gear hinged to the bracket and meshed with the first gear, a rotating rod synchronously rotating with the core shaft, and a connecting rod having opposite ends; the rotating rod includes a connecting portion for connecting to the core shaft, and a first arm and a second arm respectively connected to both sides of the connecting portion; the second gear includes a hinged portion for hinging to the bracket, and a gear portion disposed along the outer edge of the hinged portion; one end of the connecting rod is hinged to the gear portion, and the other end of the connecting rod is hinged to the first arm.

[0008] In one embodiment of the present application, a relief groove is provided on one side of the connecting rod facing the hinged portion, and the relief groove is used to accommodate the hinged portion when the core shaft is in the first state.

[0009] In one embodiment of the present application, a relief notch is provided on the outer edge of the gear portion, and the relief notch has a first side wall and a second side wall. The first side wall can abut against the second arm when the core shaft is in the first state, and the second side wall can abut against the first arm when the core shaft is in the second state.

[0010] In one embodiment of the present application, the gate mechanism further includes a first buffer and a second buffer. The first buffer is disposed opposite to the first arm, and the second buffer is disposed opposite to the second arm.

[0011] In one embodiment of the present application, the first buffer employs a first spring, and the second buffer employs a second spring.

[0012] In one embodiment of the present application, the first buffer is disposed on a side of the first arm facing away from the second gear, and the second buffer is disposed on a side of the second arm away from the second gear; the gate mechanism further includes a third spring disposed on a side of the first arm facing away from the first buffer, and a fourth spring disposed on a side of the second arm facing away from the second buffer.

[0013] In one embodiment of the present application, one end of the core shaft is provided with a connecting boss for connecting to the barrier rod, and the number of the connecting bosses is two or more.

[0014] Another object of the present application is to provide a gate including the gate mechanism as described above.

[0015] Implementing a gate mechanism provided by any embodiment of the present application has at least the following beneficial effects:

[0016] For the gate drive mechanism provided in each embodiment of the present application, the driver can drive the core shaft to switch between a first state and a second state through a transmission assembly. When the core shaft is in the first state and is connected to a horizontal barrier arm in one direction, the barrier arm is lifted when the core shaft switches to the second state; when the core shaft is in the first state and is connected to a vertically placed barrier arm, the barrier arm falls in the other direction when the core shaft switches to the second state. In this way, the gate drive mechanism combines the functions of the right-side and left-side barrier arm lifters. Without rotating the gate drive mechanism or configuring symmetrically arranged gate drive mechanisms, only by switching the specific connection method between the barrier arm and the core shaft, the barrier arm can be switched between the working states of falling to the left and falling to the right. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0018] Figure 1 is a schematic structural diagram of a gate drive mechanism provided by an embodiment of the present application;

[0019] Figure 2 is an exploded schematic diagram of a gate drive mechanism provided by an embodiment of the present application;

[0020] Figure 3 is a schematic structural diagram of a gate drive mechanism provided by an embodiment of the present application when in the first state;

[0021] Figure 4 is a schematic structural diagram of a gate drive mechanism provided by an embodiment of the present application when in the second state.

[0022] The details of the reference numerals involved in the above drawings are as follows:

[0023] 1 - Bracket; 2 - Core shaft; 21 - Connecting boss; 3 - Driver; 31 - First gear; 32 - Driving motor; 4 - Transmission assembly; 41 - Second gear; 411 - Hinge part; 412 - Gear part; 4121 - Avoidance notch; 42 - Rotating rod; 421 - First arm; 422 - Second arm; 423 - Connecting part; 43 - Link; 431 - Avoidance groove; 51 - First buffer; 511 - First spring; 512 - First guide rod; 52 - Second buffer; 521 - Second spring; 522 - Second guide rod; 6 - Barrier arm. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] In order to make the objectives, technical solutions and advantages of the present application more clear and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0025] It should be noted that when a component is referred to as "fixed to" or "disposed on" another component, it can be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The orientations or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positions shown in the accompanying drawings, and are only for the convenience of description and should not be construed as limitations on the technical solutions of the present application. The terms "first" and "second" are only used for the purpose of convenient description and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0026] In order to illustrate the technical solutions described in the present application, the following will be described in detail in conjunction with specific accompanying drawings and embodiments.

[0027] Please refer to Figures 2 to 4 , an embodiment of the present application provides a barrier gate mechanism, including a bracket 1 for providing support and fixing the relative positional relationship between various components, a core shaft 2 hinged to the bracket 1 and directly connected to the barrier rod 6, a driver 3 connected to the bracket 1 and used to provide power for the lowering and raising of the barrier rod 6, and a transmission assembly 4 connected to the bracket 1; the driver 3 can drive the core shaft 2 to switch between a first state and a second state through the transmission assembly 4, and when the core shaft 2 is in the first state, it can switch to the second state by rotating a preset angle; when the core shaft 2 is in the first state, it can be connected to the barrier rod 6 placed horizontally in the right direction between Figure 3 and Figure 4 , and when the core shaft 2 switches to the second state, the barrier rod 6 is lifted upward; when the core shaft 2 is in the first state, it can also be connected to the vertically placed barrier rod 6, and when the core shaft 2 switches to the second state, the barrier rod 6 falls in the left horizontal direction between Figure 3 and Figure 4 .

[0028] Specifically, the barrier gate mechanism provided in this embodiment works as follows:

[0029] Please refer to Figures 1 to 4, the bracket 1 provides support for the mandrel 2, the driver 3 and the transmission assembly 4. The gear lever 6 is connected to one end of the mandrel 2, and the gear lever 6 rotates as the mandrel 2 rotates. Specifically, the driver 3 is connected to the mandrel 2 through the transmission assembly 4. The power output by the driver 3 is transmitted through the transmission assembly 4 and finally becomes the rotational torque of the mandrel 2, driving the gear lever 6 to rise or controlling the gear lever 6 to fall. The driver 3 can drive the mandrel 2 to switch between the first state and the second state through the transmission assembly 4. When the mandrel 2 rotates clockwise to the first state, the horizontally placed gear lever 6 (the right side in Figure 3 and Figure 4 ) is connected to the mandrel 2, so that when the mandrel 2 rotates counterclockwise until it is in the second state, the gear lever 6 is lifted upward until the gear lever 6 is vertically placed; when the mandrel 2 rotates clockwise to the first state, the vertically placed gear lever 6 is connected to the mandrel 2, so that when the mandrel 2 rotates counterclockwise until it is in the second state, the gear lever 6 falls in the other direction ( Figure 3 and Figure 4 the left side in).

[0030] It should be understood that the relevant descriptions of clockwise and counterclockwise in the embodiments of the present application are only for explaining the working principle and technical effects of the barrier gate core provided in the embodiments of the present application in combination with the attached Figure 3 and the attached Figure 4 , and should not be construed as a limitation on the scope of protection of the application. When viewed from a perspective opposite to that of the attached Figure 3 and the attached Figure 4 , the rotation logic of clockwise and counterclockwise is opposite.

[0031] Implementing the barrier gate core provided in this embodiment has at least the following beneficial technical effects:

[0032] In the barrier gate core provided in this embodiment, the driver 3 can drive the mandrel 2 to switch between the first state and the second state through the transmission assembly 4. When the mandrel 2 is in the first state and is connected to the gear lever 6 horizontally placed in one direction, the gear lever 6 is lifted when the mandrel 2 switches to the second state; when the mandrel 2 is in the first state and is connected to the vertically placed gear lever 6, the gear lever 6 falls in the other direction when the mandrel 2 switches to the second state. In this way, the barrier gate core has both the functions of lifting the rod on the right side and the left side. There is no need to rotate the barrier gate core or configure symmetrically arranged barrier gate cores. Just by switching the specific connection method between the gear lever 6 and the mandrel 2, the gear lever 6 can be switched between the working states of falling to the left and falling to the right.

[0033] Please refer to Figures 1 to 4, in an embodiment of the present application, one end of the mandrel 2 is provided with a connecting boss 21 for connecting with the connecting lever 6, and the number of the connecting bosses 21 is two or more. The number of the connecting bosses 21 being equal to or more than two can ensure that the driving torque of the mandrel 2 can be transmitted to the lever 6, so that the driver 3 can drive the mandrel 2 and the lever 6 to rotate together through the transmission assembly 4; moreover, by correspondingly configuring the connecting holes (not shown in the figure) on the lever 6, the mandrel 2 can be connected to the lever 6 placed horizontally or vertically when rotating clockwise to the first state, thereby facilitating the switching of the working state of the gate machine core.

[0034] As a specific solution of this embodiment, correspondingly, a connecting hole corresponding to the shape of the connecting boss 21 is provided at the position of the lever 6 opposite to the mandrel 2. The connecting hole can be a through hole or a blind hole, and the number of the connecting holes is more than or equal to the number of the connecting bosses 21. For example, when the number of the connecting bosses 21 is two, the number of the connecting holes can be three and arranged in a triangular pattern, or the number of the connecting holes can be four and arranged in a cross pattern; when the number of the connecting bosses 21 is four and arranged in a cross pattern, the number of the connecting holes can also be four and arranged in the same cross pattern. Of course, it is also feasible that the number of the connecting bosses 21 and the connecting holes is one each, the connecting hole is square or cross-shaped, and the shape of the connecting boss 21 corresponds to that of the connecting hole.

[0035] Please refer to Figures 1 to 4 , in an embodiment of the present application, the transmission ratio of the driver 3 to the mandrel 2 is greater than 1. That is to say, there is a speed reduction transmission between the driver 3 and the mandrel 2, and the angular velocity output by the driver 3 is greater than the angular velocity of the mandrel 2 rotating.

[0036] The advantage of doing this is that it can reduce the rotation speed of the mandrel 2 and improve the control accuracy of the driver 3 for the rotation speed of the mandrel 2. At the same time, it can increase the output torque of the driver 3, that is, increase the driving force output by the driver 3 to the mandrel 2, ensure that the driver 3 can lift the lever 6, and avoid the influence of the torque generated by the gravity of the lever 6 itself on the control accuracy of the driver 3.

[0037] Please refer to Figures 1 to 4, in an embodiment of the present application, the driver 3 includes a first gear 31 and a drive motor 32 that is connected to the first gear 31 and capable of driving the first gear 31 to rotate; the transmission assembly 4 includes a second gear 41 that is hinged to the bracket 1 and meshes with the first gear 31, a rotating rod 42 that rotates synchronously with the core shaft 2, and a connecting rod 43 having opposite ends; the rotating rod 42 includes a connecting portion 423 for connecting to the core shaft 2, and a first arm 421 and a second arm 422 that are respectively connected to both sides of the connecting portion 423; the second gear 41 includes a hinged portion 411 for hinging to the bracket 1, and a gear portion 412 disposed along the outer edge of the hinged portion 411; one end of the connecting rod 43 is hinged to the gear portion 412, and the other end of the connecting rod 43 is hinged to the first arm 421.

[0038] For the convenience of description, in each embodiment of the present application, it is said that the core shaft 2 rotates around the first hinge axis, the second gear 41 rotates around the second hinge axis, the end of the connecting rod 43 hinged to the gear portion 412 rotates around the third hinge axis, and the end of the connecting rod 43 hinged to the first arm 421 rotates around the fourth hinge axis; at the same time, in each embodiment of the present application, the first state and the second state refer to the states of the entire barrier gate mechanism, and the first state and the second state are reflected in the rotation states of the core shaft 2 and the second gear 41. In this embodiment, the first hinge axis, the second hinge axis, the third hinge axis, and the fourth hinge axis are pairwise parallel, and the distances between adjacent axes are constant in pairs (the distance between the first hinge axis and the second hinge axis is constant, the distance between the second hinge axis and the third hinge axis is constant, the distance between the third hinge axis and the fourth hinge axis is constant, and the distance between the fourth hinge axis and the first hinge axis is constant), the positions of the first hinge axis and the second hinge axis are fixed, and the positions of the third hinge axis and the fourth hinge axis move as the second gear 41 rotates; the drive motor 32 drives the second gear 41 to rotate through the first gear 31, which essentially means controlling the third hinge axis to rotate around the second hinge axis. Since the distances between adjacent hinge axes are constant in pairs, at this time, the drive motor 32 can drive the first arm 421 to rotate around the first hinge axis through the connecting rod 43, and then drive the rotating rod 42, the core shaft 2, and the barrier rod 6 to rotate synchronously around the first hinge axis, controlling the raising and lowering of the barrier rod 6.

[0039] Please refer to Figures 1 to 4 , in an embodiment of the present application, a relief groove 431 is provided on one side of the connecting rod 43 facing the hinged portion 411, and the relief groove 431 is used to accommodate the hinged portion 411 when the core shaft 2 is in the first state.

[0040] When the drive motor 32 drives the second gear 41 to rotate through the meshing of the first gear 31 and the second gear 41, the third hinge axis rotates around the second hinge axis. In this way, please refer to Figure 3 and Figure 4, when the third hinge axis rotates to the side of the second hinge axis facing away from the fourth hinge axis, the connecting rod 43 itself will limit the further rotation of the second gear 41; at this time, by providing an avoidance groove 431 on the side of the connecting rod 43 facing the hinge portion 411 and configuring the avoidance groove 431 to be able to accommodate the hinge portion 411 when the core shaft 2 rotates clockwise to the first state, it is possible to avoid the connecting rod 43 prematurely touching the hinge shaft and forming a limit when the third hinge axis rotates around the second hinge axis, thereby expanding the rotation range of the second gear 41 and being beneficial to increasing the transmission ratio between the second gear 41 and the core shaft 2.

[0041] Please refer to Figures 1 to 4 , as a specific solution of this embodiment, the connecting rod 43 can be zigzag, and an avoidance groove 431 is formed on the side of the connecting rod 43 facing the hinge portion 411; and the connecting rod 43 is arranged on the side of the second gear 41 facing away from the bracket 1, and the connecting rod 43 is arranged on the side of the rotating rod 42 facing away from the bracket 1. The core shaft 2 needs to provide a relatively large rotational torque to the shift lever 6 in order to lift the shift lever 6 and support the shift lever 6 to be lowered. Arranging the second gear 41 and the rotating rod between the connecting rod 43 and the bracket 1 helps to reduce the distance between the connecting rod and the bracket 1 and improve the stability of the hinge between the core shaft 2 and the bracket 1; it also reduces the distance between the gear portion 412 of the second gear 41 and the bracket 1 and improves the stability of the hinge between the second gear 41 and the bracket 1.

[0042] Please refer to Figures 1 to 4 , in an embodiment of the present application, an avoidance notch 4121 is provided on the side of the gear portion 412 opposite to the core shaft 2. The avoidance notch 4121 has a first side wall and a second side wall. The first side wall can abut against the second arm 422 when the core shaft 2 is in the first state, and the second side wall can abut against the first arm 421 when the core shaft 2 is in the second state.

[0043] In this embodiment, an avoidance notch 4121 is provided on the outer edge of the gear portion 412 of the second gear 41, and the notch has a first side wall and a second side wall. When the second gear 41 rotates clockwise to the first state, the second arm 422 abuts against the first side wall, thereby avoiding the second gear 41 from rotating excessively in the clockwise direction; when the second gear 41 rotates counterclockwise to the second state, the first arm 421 abuts against the second side wall, thereby avoiding the second gear 41 from rotating excessively in the counterclockwise direction. The second side wall forms a limit on the first arm 421, and the first side wall forms a limit on the second arm 422, thereby realizing the limit of the rotation angle of the core shaft 2 and the shift lever 6, and being able to avoid the second gear 41 rotating to a position where the first gear 31 cannot mesh with the second gear 41.

[0044] Please refer to Figures 1 to 4, in an embodiment of the present application, the barrier gate core further includes a first buffer 51 and a second buffer 52. The first buffer 51 is disposed on the side of the first arm 421 facing away from the second gear 41, and the second buffer 52 is disposed on the side of the second arm 422 away from the second gear 41.

[0045] Specifically, both the first buffer 51 and the second buffer 52 are for buffering the impulse of the rotating rod 42 before the core shaft 2 rotates to the limited position. The first buffer 51 and the second buffer 52 can be respectively disposed above and below the first arm 421, or respectively disposed below and above the second arm 422, or respectively disposed above the first arm 421 and the second arm 422, or respectively disposed below the second arm 422 and the first arm 421. The first buffer 51 and the second buffer 52 only need to be able to buffer the rotating rod 42 respectively before the second gear 41 rotates to the first state and before the second gear 41 rotates to the second state. In each embodiment of the present application, the first buffer 51 and the second buffer 52 are respectively disposed above the first arm 421 and the second arm 422 as an example for illustration.

[0046] Please refer to Figures 1 to 4 , as a preferred solution of this embodiment, the first buffer 51 adopts a first spring 511, and the second buffer 52 adopts a second spring 521. One end of the first spring 511 away from the first arm 421 is connected to the bracket 1, and one end of the second spring 521 away from the second arm 422 is connected to the bracket 1.

[0047] In this way, when the driving motor 32 drives the second gear 41 to rotate clockwise through the first gear 31 and is about to reach the first state, the first arm 421 abuts against the first spring 511. While the first spring 511 buffers the first arm 421, a part of the elastic potential energy will be stored, and this part of the elastic potential energy will be released when the driving motor 32 starts to drive the second gear 41 to rotate counterclockwise through the first gear 31. When the driving motor 32 drives the second gear 41 to rotate counterclockwise through the first gear 31 and is about to reach the second state, the second arm 422 abuts against the second spring 521. While the second spring 521 buffers the second arm 422, a part of the elastic potential energy will be stored, and this part of the elastic potential energy will be released when the driving motor 32 starts to drive the second gear 41 to rotate clockwise through the first gear 31.

[0048] The advantage of this is that while the first spring 511 and the second spring 521 can respectively buffer the first arm 421 and the second arm 422, they can also reduce the energy consumption of the driving motor 32, and can assist in lifting the gear lever 6, avoiding the situation where the torque generated by the gravity of the gear lever 6 itself is too large for the driving motor 32 to lift the gear lever 6.

[0049] Please refer to Figures 1 to 4 As a specific solution of this embodiment, the first buffer 51 includes a first guide rod 512 and a first spring 511 arranged around the first guide rod 512. One end of the first spring 511 facing the first arm 421 is connected to one end of the first guide rod 512 facing the first arm 421. The end of the first spring 511 away from the first arm 421 is connected to the bracket 1. A first guide rod hole (not shown in the figure) is provided at a position of the bracket 1 opposite to the first guide rod 512. The end of the first guide rod 512 away from the first arm 421 extends out of the bracket 1. The second buffer 52 includes a second guide rod 522 and a second spring 521 arranged around the second guide rod 522. One end of the second spring 521 facing the second arm 422 is connected to one end of the second guide rod 522 facing the second arm 422. The end of the second spring 521 away from the second arm 422 is connected to the bracket 1. A second guide rod hole (not shown in the figure) is provided at a position of the bracket 1 opposite to the second guide rod 522. The end of the second guide rod 522 away from the second arm 422 extends out of the bracket 1. The first guide rod 512 and the second guide rod 522 can respectively orient the first spring 511 and the second spring 521. As buffer springs inside the barrier gate mechanism, the forces received by the first spring 511 and the second spring 521 are often large. By providing the first guide rod 512 and the second guide rod 522 to respectively orient them, the postures of the first spring 511 and the second spring 521 can be ensured not to change.

[0050] In an embodiment of the present application, the first buffer 51 is arranged on the side of the first arm 421 facing away from the second gear 41, and the second buffer 52 is arranged on the side of the second arm 422 away from the second gear 41. The barrier gate mechanism further includes a third spring (not shown in the figure) arranged on the side of the first arm 421 facing away from the first buffer 51, and a fourth spring (not shown in the figure) arranged on the side of the second arm 422 facing away from the second buffer 52.

[0051] Specifically, the third spring and the fourth spring are always in a stretched state. The advantage of this is that as the gear lever 6 extends, the moment generated by the gravity of the gear lever 6 itself increases exponentially. By setting the third spring and the fourth spring, they can respectively pull down the first arm 421 and the second arm 422, providing assistance when the drive motor 32 drives the rotating arm to start rotating clockwise and counterclockwise, and avoiding the situation where the output torque of the drive motor 32 is insufficient to lift the gear lever 6 when the gravity of the gear lever 6 itself is large.

[0052] Another object of the present application is to provide a barrier gate including the barrier gate core as described above.

[0053] The above are only optional embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A barrier gate mechanism, characterized in that, It includes a bracket, a mandrel hinged to the bracket, a driver connecting the bracket, and a transmission assembly connecting the bracket; the driver can drive the mandrel to switch between a first state and a second state through the transmission assembly, and when the mandrel is in the first state, it can switch to the second state by rotating a preset angle; when the mandrel is in the first state, it can be connected to a horizontally placed gear lever, and when the mandrel is in the first state, it can be connected to the vertically placed gear lever; The driver includes a first gear and a drive motor connected to the first gear and capable of driving the first gear to rotate; the transmission assembly includes a second gear hinged to the bracket and meshing with the first gear, a rotating rod synchronously rotating with the mandrel, and a connecting rod having opposite ends; the rotating rod includes a connecting portion for connecting to the mandrel, and a first arm and a second arm respectively connected to both sides of the connecting portion; the second gear includes a hinged portion for hinging to the bracket, and a gear portion provided along the outer edge of the hinged portion; one end of the connecting rod is hinged to the gear portion, and the other end of the connecting rod is hinged to the first arm; a relief groove is provided on one side of the connecting rod facing the hinged portion; A relief notch is provided on the outer edge of the gear portion, and the relief notch has a first side wall and a second side wall. The first side wall can abut against the second arm when the mandrel is in the first state, and the second side wall can abut against the first arm when the mandrel is in the second state.

2. The barrier gate movement mechanism according to claim 1, wherein The transmission ratio between the driver and the mandrel is greater than 1.

3. The gate mechanism according to claim 2, characterized in that, The relief groove is used to accommodate the hinged portion when the mandrel is in the first state.

4. The barrier gate machine core according to claim 1, characterized in that, The barrier gate core further includes a first buffer and a second buffer. The first buffer is disposed opposite to the first arm, and the second buffer is disposed opposite to the second arm.

5. The barrier gate movement mechanism according to claim 4, wherein The first buffer uses a first spring, and the second buffer uses a second spring.

6. The barrier gate movement mechanism according to claim 4, wherein, The first buffer is disposed on the side of the first arm facing away from the second gear, and the second buffer is disposed on the side of the second arm away from the second gear; the barrier gate core further includes a third spring disposed on the side of the first arm facing away from the first buffer, and a fourth spring disposed on the side of the second arm facing away from the second buffer.

7. The barrier gate movement mechanism according to claim 1, characterized in that, One end of the mandrel is provided with a connecting boss for connecting to the gear lever, and the number of the connecting bosses is two or more.

8. A barrier gate, characterized in that, It includes the barrier gate core according to any one of claims 1-7.

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