CN218294409U

CN218294409U - Gear shifting device

Info

Publication number: CN218294409U
Application number: CN202222008939.5U
Authority: CN
Inventors: 周成刚
Original assignee: Chengdu Tianwen Technology Co ltd
Current assignee: Chengdu Tianwen Technology Co ltd
Priority date: 2022-08-01
Filing date: 2022-08-01
Publication date: 2023-01-13
Anticipated expiration: 2032-08-01

Abstract

The utility model belongs to the technical field of entrance guard equipment, in particular to a gear shifting device; the gear shifting mechanism comprises a fixed frame, an input motor, a gear shifting assembly and an output gear; the gear shifting assembly comprises a shaft gear, a gear shifting bracket, a transmission part and at least two duplicate gears, wherein the input motor is in transmission connection with the duplicate gears, and the shaft gear is in transmission connection with the output gear; the gear shifting support is rotatably provided with two transmission screw rods, transmission nuts are arranged at two ends of the gear shifting support, two ends of the gear shifting support are respectively arranged on the two transmission screw rods through the transmission nuts, the transmission portion is in transmission connection with the two transmission screw rods, and the gear shifting support is rotatably provided with a gear shifting gear used for meshing a shaft gear and one of the duplicate gears. The two ends of the gear shifting support in the gear shifting device are respectively in transmission connection with the two transmission screws, and the transmission part drives the two transmission screws to synchronously act, so that the gear shifting support can stably run along the length direction of the transmission screws, and the gear shifting device can work more stably and smoothly.

Description

Gear shifting device

Technical Field

The utility model belongs to the technical field of entrance guard's equipment, concretely relates to gearshift.

Background

In the existing gate driving module, the reduction ratio of a gear set is fixed, and under the condition that the rotating speed and the torsion of a motor are fixed, the higher the reduction ratio in the reduction gear set is, the slower the opening/closing speed of a gate is caused, and the anti-following capability of the gate is also poor; the lower the reduction ratio, the smaller the moment of opening/closing the gate, and the less the blocking prevention capability of the gate.

In order to better meet the use requirements of the automatic door, an automatic gear shifting device is provided, in which a transmission path of a force is changed by a gear shifting assembly during operation to change the magnitude of the power transmitted by an output gear, thereby realizing adjustment of the opening/closing speed and the magnitude of the force of the automatic door.

However, the shifting gears and the transmission screws in the automatic shifting device are respectively located at two ends of the shifting bracket, and in the process that the transmission screws drive the shifting bracket to shift gears, the two ends of the shifting bracket are easy to shift, so that the shifting bracket is stuck and cannot continue to shift gears, and even the automatic door cannot be opened or closed normally. Therefore, the invention provides a gear shifting device with a stable working state, which is a technical problem to be solved urgently by the technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to solve the above-mentioned problem that prior art exists, the utility model provides a gearshift to the skew appears easily at the in-process that removes in the support of shifting that exists among the solution prior art, leads to the support card of shifting to die and can't remove the technical problem of the function of shifting.

The utility model discloses a following technical scheme specifically realizes:

a gear shifting device comprises a fixed frame, an input motor, a gear shifting assembly and an output gear;

the gear shifting assembly comprises a shaft gear, a gear shifting bracket, a transmission part and at least two duplicate gears, wherein the shaft gear and the duplicate gears are rotatably arranged on the fixed frame, all the duplicate gears are sequentially meshed and are in transmission connection with a speed reduction, the axis of the shaft gear is parallel to the axis of the duplicate gears, the input motor is in transmission connection with the duplicate gears, and the shaft gear is in transmission connection with the output gear;

the transmission device is characterized in that two transmission screw rods are arranged on the fixing frame in a rotating mode, the axes of the transmission screw rods are parallel to the axis of the shaft gear, transmission nuts matched with the transmission screw rods are arranged at two ends of the gear shifting support, two ends of the gear shifting support are arranged on the transmission screw rods respectively through the transmission nuts, the transmission portion is in transmission connection with the two transmission screw rods, and the gear shifting support is rotatably provided with a gear shifting gear used for meshing the shaft gear with one of the shaft gear and the duplicate gear.

In order to better realize the utility model discloses, do further optimization in above-mentioned structure, transmission portion includes gear motor, gear motor's power take off end is provided with the driving gear, be provided with driven gear on the drive screw, gear motor passes through the driving gear with driven gear's cooperation with the drive screw transmission is connected.

In order to realize the utility model discloses, do further optimization in above-mentioned structure, transmission portion still includes intermediate gear, intermediate gear rotates and sets up on the mount, the driving gear passes through intermediate gear with driven gear transmission connects.

In order to better realize the utility model discloses, do further optimization in above-mentioned structure, still be provided with the fixed axle on the mount, the length direction of fixed axle with the length direction of drive screw is parallel, fixed axle alternates in the middle part of the support of shifting, just the gear of shifting rotates and sets up on the fixed axle.

In order to better realize the utility model discloses, do further optimization in above-mentioned structure, the support of shifting includes that first baffle and the second of trading trades the baffle, first trade the baffle with second shift board fixed connection, drive nut with the gear of shifting all sets up first trade the baffle with between the second shift board.

In order to better realize the utility model discloses, do further optimization in above-mentioned structure, still be provided with on the mount and be used for the monitoring the positioner of gear shifting's position.

In order to better realize the utility model discloses, do further optimization in above-mentioned structure, positioner includes treater, photoelectric sensor and light screen, photoelectric sensor includes signal transmitter and signal receiver, signal transmitter signal receiver and transmission portion all with the treater electricity is connected, the light screen is located signal transmitter with between the signal receiver, just the light screen with first board fixed connection that shifts.

To sum up, the utility model discloses following technological effect has:

the two ends of the gear shifting support in the gear shifting device are respectively in transmission connection with the two transmission screws, and the transmission part drives the two transmission screws to synchronously act, so that the gear shifting support can stably run along the length direction of the transmission screws, the situation that the gear shifting support deviates is avoided, and the gear shifting device works more stably and smoothly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a gear shifting device of the present invention;

fig. 2 is a schematic structural view of a transmission portion of a gear shifting device according to the present invention;

fig. 3 is a schematic structural diagram of the inside of a gear shifting device according to the present invention;

fig. 4 is a schematic structural diagram of a gear shifting assembly in the gear shifting device of the present invention.

Reference numerals:

1. a fixed mount; 11. a drive screw; 12. a fixed shaft; 2. inputting a motor; 3. a shift assembly; 31. a shaft gear; 32. a shift bracket; 321. a first changing baffle; 322. a second baffle plate; 323. a drive nut; 324. a shift gear; 325. a visor; 33. a transmission section; 331. a shift motor; 332. a driving gear; 333. a driven gear; 334. an intermediate gear; 34. a duplicate gear; 4. an output gear; 5. and a positioning device.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be noted that "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Moreover, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is also to be understood that the terms "mounted", "connected" and "connected", unless expressly specified or limited otherwise, are intended to be interpreted broadly, as meaning either a fixed connection or a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

Example (b):

as shown in fig. 1 to 4:

a gear shifting device comprises a fixed frame 1, an input motor 2, a gear shifting assembly 3 and an output gear 4; wherein,

the gear shifting assembly 3 comprises a shaft gear 31, a gear shifting bracket 32, a transmission part 33 and at least two duplicate gears 34, wherein the shaft gear 31 and the duplicate gears 34 are rotatably arranged on the fixed frame 1, all the duplicate gears 34 are sequentially meshed and in transmission connection with a speed decreasing step, the axis of the shaft gear 31 is parallel to the axis of the duplicate gears 34, the input motor 2 is in transmission connection with the duplicate gears 34, and the shaft gear 31 is in transmission connection with the output gear 4;

the fixed frame 1 is rotatably provided with two transmission screws 11, the axes of the two transmission screws 11 are parallel to the axis of the shaft gear 31, two ends of the gear shift bracket 32 are respectively provided with a transmission nut 323 matched with the transmission screws 11, two ends of the gear shift bracket 32 are respectively arranged on the two transmission screws 11 through the transmission nuts 323, the transmission part 33 is in transmission connection with the two transmission screws 11, and the gear shift bracket 32 is rotatably provided with a gear shift gear 324 used for meshing the shaft gear 31 and one of the duplicate gears 34.

This gearshift is at the course of the work, the user can control the action of transmission portion 33 according to the circumstances, transmission portion 33 just can drive two drive screw 11 synchronous rotations, make shift bracket 32 can be along the steady removal of drive screw 11's axis direction, so that shift gear 324 on the shift bracket 32 can mesh with the duplicate gear 34 of difference, and pass through shaft gear 31 and output gear 4 with power and transmit to the automatically-controlled door on, with speed or the dynamics of change automatically-controlled door when removing, thereby satisfy entrance guard security device's use.

The two ends of the gear shifting bracket 32 are synchronously driven by the two transmission screw rods 11, so that the gear shifting bracket 32 can be prevented from being stuck due to deviation in the gear shifting process, and the working state of the gear shifting device is more stable.

It should be noted that, the fixing frame 1 is provided with a first positioning shaft and a second positioning shaft, the axis of the first positioning shaft and the axis of the second positioning shaft are both parallel to the axis of the shaft gear 31, the dual gear 34 is rotatably disposed on the first positioning shaft or the second positioning shaft, all the dual gears 34 are arranged along the axial direction of the first positioning shaft or the second positioning shaft, and the power transmission path is transmitted to the first dual gear 34 on the first positioning shaft by the input motor 2, then transmitted to the dual gear 34 on the second positioning shaft by the first dual gear 34 on the first positioning shaft, then transmitted to the second dual gear 34 on the first positioning shaft by the dual gear 34 on the second positioning shaft, and so on;

and above-mentioned shift bracket 32 can follow the axial direction translation of first locating shaft, makes shift gear 324 can mesh with first locating shaft or the epaxial different duplicate gear 34 of second locating at different positions to change the reduction ratio in the entrance guard security device through this gearshift.

Preferably, the transmission part 33 includes a shift motor 331; wherein,

the gear shifting motor 331 is fixedly arranged on the fixed frame 1, a driving gear 332 is arranged at the power output end of the gear shifting motor 331, a driven gear 333 is arranged on the transmission screw rod 11, and the gear shifting motor 331 is in transmission connection with the transmission screw rod 11 through the engagement of the driving gear 332 and the driven gear 333;

when the shift motor 331 rotates, the shift motor 331 can drive the two transmission screws 11 to rotate synchronously, so as to adjust the position of the shift bracket 32, and thus the shift gear 324 can be engaged with different dual gears 34, so as to achieve the effect of changing the reduction ratio.

Preferably, the transmission part 33 further includes an intermediate gear 334, the intermediate gear 334 is rotatably disposed on the fixed frame 1, and the driving gear 332 is in transmission connection with the driven gears 333 on the two transmission screws 11 through the intermediate gear 334 to realize power transmission.

Preferably, the fixing frame 1 is further provided with a fixing shaft 12, an axis of the fixing shaft 12 is parallel to an axis of the transmission screw 11, the shift bracket 32 is provided with a through hole, the shift gear 324 is rotatably arranged at the through hole, the shift gear 324 is provided with a fixing hole, and the fixing shaft 12 passes through the fixing hole and is connected with the fixing frame 1; the fixed shaft 12 has a certain guiding function, so that the gear shifting device is more stable in gear shifting.

Preferably, the shift bracket 32 further includes a first shift plate 321 and a second shift plate 322; wherein,

the first shift plate 321 is fixedly connected with the second shift plate 322, and the transmission nut 323 and the shift gear 324 are both arranged between the first shift plate 321 and the second shift plate 322, so as to avoid the shift gear 324 from falling off the shift bracket 32, thereby enabling the structure of the shift bracket 32 to be more stable.

Preferably, the fixing frame 1 is further provided with a positioning device 5 for detecting the position of the shift gear 324;

specifically, the positioning device 5 includes a processor, a photoelectric sensor, and a light shielding plate 325; wherein,

the photoelectric sensor comprises a signal emitter and a signal receiver, the signal emitter, the signal receiver and the gear shifting motor 331 are all electrically connected with the processor, the light shielding plate 325 is positioned between the signal emitter and the signal receiver, and the light shielding plate 325 is fixedly connected with the first shifting plate 321;

when the gear shifting device works, a user can control the gear shifting motor 331 to rotate so as to adjust the position of the gear shifting bracket 32, so that the gear shifting gear 324 is meshed with one duplicate gear 34 on the first positioning shaft or the second positioning shaft, and power transmission is realized;

while the position of the shift bracket 32 is changed, the position of the light shielding plate 325 moves along with the shift bracket 32 and is located between the signal transmitter and the signal receiver, so that the signal receiver cannot receive the optical signal sent by the signal transmitter, and the signal receiver feeds back the information to the processor, which indicates that the shift gear 324 is in a meshing state with the dual gear 34 at the position;

otherwise, the processor controls the shift motor 331 to continue to rotate until the shift gear 324 meshes with the dual gear 34.

It should be noted that the number of the photoelectric sensors is equal to the number of the dual gears 34, and the positions correspond to one another, so as to better determine the position of the shift gear 324, the photoelectric sensors are preferably photoelectric switches of model ST130A, and the processor is preferably a control unit of model STM 8.

Further, the photoelectric sensor may be replaced with a sensor such as a slide rheostat.

Preferably, a reduction gear set is arranged between the output gear 4 and the shaft gear 31, the reduction gear set comprises a plurality of reduction gears, and the specific number of the reduction gears can be set according to requirements;

all the reduction gears in the reduction gear set are rotatably arranged on the fixed frame 1, and the shaft gear 31 is in transmission connection with the output gear 4 through the reduction gear set; the reduction gear set can reduce the rotating speed output by the output gear 4 and increase the torque output by the output gear 4, thereby better driving the movement of the automatic door.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A gear shift device characterized by: comprises a fixed frame (1), an input motor (2), a gear shifting component (3) and an output gear (4);

the gear shifting assembly (3) comprises a shaft gear (31), a gear shifting bracket (32), a transmission part (33) and at least two duplicate gears (34), wherein the shaft gear (31) and the duplicate gears (34) are rotatably arranged on the fixed frame (1), all the duplicate gears (34) are sequentially meshed and are in transmission connection with a speed reduction, the axis of the shaft gear (31) is parallel to the axis of the duplicate gears (34), the input motor (2) is in transmission connection with the duplicate gears (34), and the shaft gear (31) is in transmission connection with the output gear (4);

rotate on mount (1) and be provided with two drive screw (11), two the axis of drive screw (11) all with the axis of shaft gear (31) is parallel, the both ends of support of shifting (32) all be provided with drive nut (323) that drive screw (11) match, the both ends of support of shifting (32) all pass through drive nut (323) set up respectively two on drive screw (11), transmission portion (33) and two drive screw (11) transmission is connected, it is provided with on support of shifting (32) and is used for the meshing shaft gear (31) and one of them gear shifting (324) of duplicate gear (34).

2. The shifting apparatus of claim 1, wherein: the transmission part (33) comprises a gear shifting motor (331), a driving gear (332) is arranged at the power output end of the gear shifting motor (331), a driven gear (333) is arranged on the transmission screw rod (11), and the gear shifting motor (331) is in transmission connection with the transmission screw rod (11) through the matching of the driving gear (332) and the driven gear (333).

3. The shifting apparatus of claim 2, wherein: the transmission part (33) further comprises an intermediate gear (334), the intermediate gear (334) is rotatably arranged on the fixed frame (1), and the driving gear (332) is in transmission connection with the driven gear (333) through the intermediate gear (334).

4. The shifting apparatus of claim 1, wherein: the fixing frame (1) is further provided with a fixing shaft (12), the length direction of the fixing shaft (12) is parallel to that of the transmission screw (11), the fixing shaft (12) penetrates through the middle of the gear shifting support (32), and the gear shifting gear (324) is rotatably arranged on the fixing shaft (12).

5. The shift apparatus according to any one of claims 1 to 4, characterized in that: the gear shifting bracket (32) comprises a first gear shifting plate (321) and a second gear shifting plate (322), the first gear shifting plate (321) is fixedly connected with the second gear shifting plate (322), and the transmission nut (323) and the gear shifting gear (324) are arranged between the first gear shifting plate (321) and the second gear shifting plate (322).

6. The shifting apparatus of claim 5, wherein: the fixed frame (1) is also provided with a positioning device (5) for monitoring the position of the gear shifting gear (324).

7. The shifting apparatus of claim 6, wherein: the positioning device (5) comprises a processor, a photoelectric sensor and a light shielding plate (325), wherein the photoelectric sensor comprises a signal emitter and a signal receiver, the signal emitter, the signal receiver and the transmission part (33) are all electrically connected with the processor, the light shielding plate (325) is positioned between the signal emitter and the signal receiver, and the light shielding plate (325) is fixedly connected with the first switching plate (321).