Tensioning device for transmission chain of electrically operated gate

Abstract

The utility model discloses an electrically operated gate transmission chain tensioning device which comprises a driving chain wheel and a driven chain disc, and the side wall of the driving chain wheel is sleeved with a chain body. The transmission assembly is arranged on the driven chain disc and used for transmitting the chain body, the detection assembly is used for detecting the tightness degree of the chain body in the transmission process, and the detection assembly is provided with an adjusting assembly used for adjusting the tightness degree of the chain body. Through the arrangement of the detection assembly, the transmission gap of the chain body can be conveniently detected in time, and the transmission gap of the chain body is adjusted in time and accurately through the adjusting assembly, so that the tensioning degree of the chain body is adjusted conveniently, and meanwhile the transmission gap of the chain body is adjusted accurately. And the timeliness and the accuracy of adjusting the tension degree of the chain body are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric doors, and specifically relates to a tensioning device for a transmission chain of an electric door. Background Art

[0002] With the increasing frequency of use of electric doors, during long-term operation and repeated stretching, the transmission chain is elongated, resulting in the transmission chain becoming loose. Therefore, in order to ensure the smooth operation of the electric door, it is necessary to adjust the tightness of the transmission chain. The existing methods for adjusting the transmission chain can be adjusted by adjusting the distance between two sprockets or by squeezing the chain. Although the adjustment method is relatively simple, during the actual operation of the transmission chain, the deformation of the transmission chain is progressive and there are specific requirements for adjusting the tightness of the transmission chain. Adjusting too loose will cause failure to transmit, while adjusting too tight will cause the chain to break. Therefore, it is difficult to master the specific adjustment timing and adjustment range of the transmission chain, which easily leads to untimely and unscientific adjustment of the transmission chain, further affecting the stability of the operation of the electric door.

[0003] Therefore, there is an urgent need for a tensioning device for an electric door transmission chain to solve the above problems. Summary of the Utility Model

[0004] To achieve the above object, the utility model provides the following technical solution: A tensioning device for an electric door transmission chain, including a driving sprocket and a driven sprocket. A chain body is sleeved on the side wall of the driving sprocket. The device further includes a transmission component arranged on the driven sprocket for driving the chain body and a detection component for detecting the tightness of the chain body during transmission. The detection component is provided with an adjustment component for adjusting the tightness of the chain body.

[0005] The detection component includes a detection cavity opened on the driven sprocket. A plurality of detection frames are annularly arranged in the detection cavity. A detection plate is slidably connected to each detection frame. A distance sensor is arranged on the opposite side of each detection frame, and the detection end of the distance sensor faces the detection plate.

[0006] Each detection frame is provided with a pressing component for pressing the detection plate. The pressing component is a compression spring. One end of the compression spring is connected to the bottom wall of the detection frame, and the other end of the compression spring is connected to the detection plate.

[0007] The transmission component includes a plurality of transmission plates slidably connected to the driven sprocket. One end of each transmission plate is located in the detection frame and is connected to the detection plate. The other end of each transmission plate is fixedly connected with a sector sprocket, and each sector sprocket is arranged to match the chain body.

[0008] The adjusting assembly includes a driving circular plate rotatably connected to the detection cavity. The driving circular plate is provided with a plurality of driving inclined grooves, and each driving inclined groove is slidably connected with a driving shaft. One end of each driving shaft is connected to the detection frame.

[0009] A driving motor is arranged on one side of the driven chain wheel, and the output end of the driving motor is connected to the driving circular plate.

[0010] The detection cavity is provided with a guiding assembly for guiding the movement of each detection frame. The guiding assembly includes a guiding groove opened on the inner wall of the detection cavity far from the driving motor side. The guiding groove is slidably connected with a guiding plate, and one end of the guiding plate is connected to the detection frame.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] Through the setting of the detection assembly, the present utility model facilitates the timely detection of the transmission clearance of the chain body, and uses the adjusting assembly to timely and accurately adjust the transmission clearance of the chain body. Thus, while ensuring the convenience of adjusting the tension of the chain body, the timeliness and accuracy of adjusting the tension of the chain body are improved, thereby avoiding the decline of the transmission performance of the chain body or the breakage of the chain body caused by the chain body being adjusted too loose or too tight, and further ensuring the stability of the operation of the electric door. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2 is a schematic diagram of the internal structure of the driving assembly of the present utility model;

[0015] Figure 3 is a schematic diagram of the internal structure of the detection assembly of the present utility model;

[0016] Figure 4 is Figure 3 the enlarged view at A in

[0017] In the figure: 101, driving sprocket; 102, chain body; 103, driven chain wheel; 201, detection cavity; 202, detection frame; 203, detection plate; 204, distance sensor; 3, compression spring; 401, transmission plate; 402, sector sprocket; 501, driving circular plate; 502, driving inclined groove; 503, driving shaft; 504, driving motor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0019] Embodiment 1

[0020] Please refer to Figures 1 - 4 , a tensioning device for an electric door drive chain shown in the figure, which includes a driving sprocket 101 and a driven sprocket 103. A chain body 102 is sleeved on the side wall of the driving sprocket 101. It further includes a transmission assembly arranged on the driven sprocket 103 for driving the chain body 102 and a detection assembly for detecting the tightness of the chain body 102 during transmission. The detection assembly is provided with an adjustment assembly for adjusting the tightness of the chain body 102;

[0021] The detection assembly includes a detection cavity 201 opened in the driven sprocket 103. A plurality of detection frames 202 are annularly arranged in the detection cavity 201. A detection plate 203 is slidably connected to each detection frame 202. A distance sensor 204 is provided on one side of each detection frame 202 opposite to each other, and the detection end of the distance sensor 204 faces the detection plate 203;

[0022] It should be noted here that: through the setting of the detection assembly, it is convenient to detect the transmission gap of the chain body 102 in a timely manner, and the adjustment assembly is used to adjust the transmission gap of the chain body 102 in a timely and accurate manner. While ensuring the convenience of adjusting the tension of the chain body 102, the timeliness and accuracy of adjusting the tension of the chain body 102 are improved, thereby avoiding the decline of the transmission performance of the chain body 102 or the breakage of the chain body 102 caused by the chain body 102 being adjusted too loose or too tight, and further ensuring the stability of the operation of the electric door.

[0023] Please refer to Figure 4 , each detection frame 202 in the figure is provided with a pressing assembly for pressing the detection plate 203. The pressing assembly is a pressing spring 3. One end of the pressing spring 3 is connected to the bottom wall of the detection frame 202, and the other end of the pressing spring 3 is connected to the detection plate 203;

[0024] It should be noted here that: through the setting of the pressing assembly, while making the sector sprocket 402 contact the chain, the tightness of the chain body 102 can be sensed in a timely manner.

[0025] Working principle: When using the transmission chain body 102 to drive the movement of the electric door, first, the driving motor drives the driving sprocket 101 to rotate. Thus, under the action of the rotation of the driving sprocket 101 and the transmission component, the chain body 102 will be driven to rotate, and through the transmission of the chain body 102, the movement of the electric door is realized;

[0026] During the process of the chain body 102 driving the electric door to move, during long-term operation and repeated stretching, the chain body 102 is elongated, making the chain body 102 become loose. When the chain body 102 becomes loose, when the sector sprocket 402 rotates to the side of the driven sprocket 103 away from the driving sprocket 101, when the chain body 102 abuts against the sector sprocket 402, the extrusion and pushing distance of the sector sprocket 402 will be reduced, thereby reducing the moving distance of the detection plate 203 in the detection frame 202. When the distance sensor 204 detects the change in the moving distance of the detection plate 203, it will send an electrical signal to the controller. Under the action of the controller, the adjustment component is used to push the sector sprocket 402 to move closer to the chain body 102, thereby trimming the transmission clearance of the chain body 102 and maintaining the tension of the chain body 102 during transmission. Thus, through the setting of the detection component, it is convenient to detect the transmission clearance of the chain body 102 in a timely manner, and the adjustment component is used to adjust the transmission clearance of the chain body 102 timely and accurately. Thus, while ensuring the convenience of adjusting the tension of the chain body 102, the timeliness and accuracy of adjusting the tension of the chain body 102 are improved, thereby avoiding the decline in the transmission performance of the chain body 102 or the breakage of the chain body 102 caused by the chain body 102 being adjusted too loose or too tight, and further ensuring the stability of the operation of the electric door.

[0027] Embodiment 2

[0028] Please refer to Figure 2 , this embodiment further explains Embodiment 1. The transmission component in the figure includes a plurality of transmission plates 401 slidably connected to the driven sprocket 103. One end of each transmission plate 401 is located in the detection frame 202 and is connected to the detection plate 203. The other end of each transmission plate 401 is fixedly connected with a sector sprocket 402, and each sector sprocket 402 is arranged to match the chain body 102;

[0029] It should be noted here that: through the setting of the transmission component, the chain body 102 is driven by the meshing transmission of each sector sprocket 402 and the chain body 102, thereby driving the cyclic transmission of the chain body 102.

[0030] Embodiment 3

[0031] Please refer to Figure 2, this embodiment further explains other embodiments. The adjustment component shown in the figure includes a driving circular plate 501 rotatably connected to the detection cavity 201. The driving circular plate 501 is provided with a plurality of driving inclined slots 502. Each driving inclined slot 502 is slidably connected with a driving shaft 503. One end of each driving shaft 503 is connected to the detection frame 202. A driving motor 504 is provided on one side of the driven sprocket 103. The output end of the driving motor 504 is connected to the driving circular plate 501;

[0032] It should be noted here that: through the setting of the adjustment component, during the process of the driving motor 504 driving the driving circular plate 501 to rotate, the driving inclined slots 502 will be driven to rotate. During the rotation of the driving inclined slots 502, under the meshing transmission of the driving shafts 503 and the guiding action of the guiding component, each detection frame 202 will be pushed to move away from or close to each other, and further the extrusion component will drive each sector sprocket 402 to move closer to or away from each other, so as to move the sector sprockets 402 away from or close to the chain body 102, realizing the adjustment of the tightness of the chain body 102.

[0033] Please refer to Figure 3 , the detection cavity 201 shown in the figure is provided with a guiding component for guiding the movement of each detection frame 202. The guiding component includes a guiding groove opened on the inner wall of the detection cavity 201 on the side away from the driving motor 504. The guiding groove is slidably connected with a guiding plate. One end of the guiding plate is connected to the detection frame 202;

[0034] It should be noted here that: through the setting of the guiding component (not shown in the figure here), it provides guiding and limiting functions for the movement of the detection frame 202.

[0035] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. An electric door transmission chain tensioning device, comprising: A driving sprocket (101) and a driven chain plate (103), wherein a chain body (102) is sleeved on a side wall of the driving sprocket (101); It is characterized by further comprising: A transmission component arranged on the driven chain plate (103) for transmitting the chain body (102) and a detection component for detecting the tightness of the chain body (102) during the transmission process, wherein the detection component is provided with an adjustment component for adjusting the tightness of the chain body (102); The detection component comprises a detection cavity (201) opened on the driven chain disk (103), the detection cavity (201) is provided with a plurality of detection frames (202) in a ring shape, each of the detection frames (202) is slidably connected to a detection plate (203), a distance sensor (204) is provided on the opposite side of each of the detection frames (202), and a detection end of the distance sensor (204) is opposite to the detection plate (203).

2. The electric door transmission chain tensioning device according to claim 1, characterized in that: Each of the detection frames (202) is provided with a pressing component for pressing the detection plate (203), wherein the pressing component is a pressing spring (3), one end of the pressing spring (3) is connected to the bottom wall of the detection frame (202), and the other end of the pressing spring (3) is connected to the detection plate (203).

3. The electric door transmission chain tensioning device according to claim 1, characterized in that: The transmission assembly includes a plurality of transmission plates (401) slidably connected to a driven chain disc (103), one end of each transmission plate (401) is located in a detection frame (202) and connected to the detection plate (203), the other end of each transmission plate (401) is fixedly connected to a fan-shaped sprocket (402), and each fan-shaped sprocket (402) is matched with a chain body (102).

4. The electric door transmission chain tensioning device according to claim 1, characterized in that: The adjustment component comprises a driving circular plate (501) rotatably connected to the detection chamber (201), the driving circular plate (501) is provided with a plurality of driving inclined grooves (502), each of the driving inclined grooves (502) is slidably connected to a driving shaft (503), and one end of each of the driving shafts (503) is connected to the detection frame (202).

5. The electric door transmission chain tensioning device according to claim 4, characterized in that: A driving motor (504) is provided on one side of the driven chain disc (103), and an output end of the driving motor (504) is connected to the driving circular plate (501).

6. The electric door transmission chain tensioning device according to claim 5, characterized in that: The detection chamber (201) is provided with a guide assembly for guiding the movement of each detection frame (202), the guide assembly comprising a guide groove provided on the inner wall of the detection chamber (201) on a side away from the drive motor (504), the guide groove being slidably connected to a guide plate, one end of the guide plate being connected to the detection frame (202).

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