CN220185728U

CN220185728U - Self-adaptive belt transmission tensioning device

Info

Publication number: CN220185728U
Application number: CN202321972118.1U
Authority: CN
Inventors: 蓝正新; 万里荣; 胡士华; 覃莉莉
Original assignee: Liuzhou Railway Vocational Technical College
Current assignee: Liuzhou Railway Vocational Technical College
Priority date: 2023-07-25
Filing date: 2023-07-25
Publication date: 2023-12-15
Anticipated expiration: 2033-07-25

Abstract

The utility model provides a self-adaptive belt transmission tensioning device, wherein a driving belt pulley is arranged on a transmission motor at the top end of a base, an output shaft support is slidably arranged at the other side of the top end of the base, a driven belt pulley is arranged on the output shaft support, a photoelectric speed sensor is correspondingly arranged on the base, an adjusting mechanism for driving the output shaft support to slide is fixedly arranged at the top end of the base, a controller is arranged on the adjusting mechanism, a pressure sensor is fixedly arranged at the top end of the base, and a force transmission spring is arranged between the pressure sensor and the output shaft support. When the device is initially tensioned, the pressure sensor senses the pressure change of the spring, and the pressure change is fed back to the controller, so that the initial pre-tightening force is accurately controlled; during tensioning, the real-time rotating speeds of the driving belt wheel and the driven belt wheel are transmitted to the controller of the adjusting mechanism through the photoelectric speed sensor, the rotating speed difference of the driving belt wheel and the driven belt wheel is monitored and compared through the controller, the adjusting mechanism is controlled to push the output shaft support to move, and pretightening force adjustment is achieved.

Description

Self-adaptive belt transmission tensioning device

Technical Field

The utility model relates to the technical field of belt transmission devices, in particular to a self-adaptive belt transmission tensioning device.

Background

Belt drives are one of the most common drive forms in mechanical drive, and are simple in structure, convenient to use and maintain, capable of buffering, absorbing vibration, low in noise and the like, so that the belt drive is usually placed at a high speed level. The friction belt is required to be tightly pressed in the belt grooves of the main belt pulley and the auxiliary belt pulley before transmission, the situation of the pretightening force is judged by pressing the belt between the two belt pulleys, the pretightening force of the belt transmission by the empirical method has larger error, the friction belt is easily subjected to environmental temperature and humidity change, rotation speed change, load fluctuation and other reasons in the transmission process, the pretightening force of the friction belt transmission is not enough to generate larger elastic sliding, larger transmission error is caused, even abnormal sliding is caused to cause transmission failure, the belt is easily subjected to the stress of alternating loose edges, bending stress and centrifugal stress to cause the section length of the belt to become larger, the pretightening force is insufficient, and the empirical method in the prior art can not accurately control the initial pretightening force in the initial tensioning process and can not carry out real-time process tensioning in the belt transmission process.

Disclosure of Invention

The utility model aims to provide a self-adaptive belt transmission tensioning device which can accurately regulate and control the pretightening force of a belt connected with a driving belt pulley and a driven belt pulley.

The utility model provides a self-adaptive belt transmission tensioning device, which comprises a base, wherein a transmission motor is fixedly arranged on one side of the top end of the base, a driving belt pulley is arranged on an output shaft of the transmission motor, an output shaft support is slidably arranged on the other side of the top end of the base, a driven belt pulley matched with the driving belt pulley through belt transmission is arranged on the output shaft support, photoelectric speed sensors for detecting the rotation speeds of the driving belt pulley and the driven belt pulley are fixedly arranged on the top end of the base respectively, an adjusting mechanism for driving the output shaft support to slide along the length direction of the base is fixedly arranged between the transmission motor and the output shaft support, a controller is arranged on the adjusting mechanism, a pressure sensor is fixedly arranged on the top end of the base, and a force transmission spring is arranged between the pressure sensor and the output shaft support; the pressure sensor and the two photoelectric speed sensors are electrically connected with the controller.

Further, the output shaft support comprises a sliding support, a sliding rail is fixedly arranged at the top end of the base along the length direction of the base, a sliding groove matched with the sliding rail is formed in the bottom end of the sliding support, a driven shaft is installed at the top end of the sliding support in a penetrating mode, the driven shaft is connected with the sliding support in a rotating mode through a bearing, and the driven belt wheel is installed on the driven shaft.

Further, the side of the driving belt pulley and the side of the driven belt pulley are fixedly provided with rotating speed iron cores, a first photoelectric speed sensor is arranged at the top end of the base corresponding to the position of the rotating speed iron cores of the driving belt pulley, and a second photoelectric speed sensor is arranged at the top end of the base corresponding to the position of the rotating speed iron cores of the driven belt pulley.

Further, the adjusting mechanism is an adjusting motor, a transmission screw is fixedly installed on an output shaft of the adjusting motor, and the transmission screw penetrates through the output shaft support and is matched with the output shaft support for transmission.

Further, the adjusting mechanism is a telescopic cylinder, and the output end of the telescopic cylinder is fixedly connected with the output shaft support.

Further, the driving belt wheel is connected with the output shaft of the transmission motor and the driven belt wheel is connected with the driven shaft through keys.

Further, the top of base has seted up and is used for installing pressure sensor's mounting groove, pressure sensor's bottom with mounting groove interference fit is connected.

Further, a transmission gear is arranged at one end of the driven shaft, which is far away from the driven belt wheel.

Compared with the prior art, the technical scheme of the utility model has the following beneficial effects: in the initial tensioning process of the belt, the output shaft support is driven by the adjusting mechanism to slide along the length direction of the base, so that the center distance between the main belt pulley and the driven belt pulley is increased to generate a pretightening force, the pretightening force is fed back to the controller by the pressure sensor sensing the pressure change of the spring, and the initial pretightening force is accurately controlled; when the process is tensioned: the photoelectric speed sensors for detecting the rotating speeds of the driving belt wheel and the driven belt wheel are fixedly arranged at the top end of the base respectively, the real-time rotating speeds of the driving belt wheel and the driven belt wheel are transmitted to the controller of the adjusting mechanism, the rotating speed difference of the driving belt wheel and the driven belt wheel is monitored and compared through the controller, the adjusting mechanism is controlled to push the output shaft support to move, and the pretightening force is adjusted in the transmission process.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is an exploded view of the overall structure of the present utility model;

reference numerals illustrate: the device comprises a 1-base, a 2-transmission motor, a 3-driving belt pulley, a 4-driven belt pulley, a 5-output shaft support, a 501-sliding support, a 502-driven shaft, a 6-belt, a 7-adjustment motor, an 8-transmission screw rod, a 9-pressure sensor, a 10-force transmission spring, a 11-first photoelectric speed sensor, a 12-photoelectric speed sensor, a 13-transmission gear, a 14-controller and a 15-rotating speed iron core.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Example 1

As shown in fig. 1-2, a self-adaptive belt transmission tensioning device comprises a base 1, wherein a transmission motor 2 is fixedly arranged on one side of the top end of the base 1, a driving pulley 3 is arranged on an output shaft of the transmission motor 2, an output shaft support 5 is slidably arranged on the other side of the top end of the base 1, and a driven pulley 4 which is in transmission fit with the driving pulley 3 through a belt 6 is arranged on the output shaft support 5, wherein: the output shaft support 5 comprises a sliding support 501, a sliding rail 16 is fixedly arranged at the top end of the base 1 along the length direction of the base, a sliding groove matched with the sliding rail 16 is formed in the bottom end of the sliding support 501, a driven shaft 502 is installed at the top end of the sliding support 501 in a penetrating mode, the driven shaft 502 is rotationally connected with the sliding support 501 through a bearing, and the driven belt wheel 4 is installed on the driven shaft 502; the driving pulley 3 is connected with the output shaft of the transmission motor 2 and the driven pulley 4 is connected with the driven shaft 502 through keys.

The adjustment mechanism for driving the output shaft support 5 to slide along the length direction of the base 1 is fixedly arranged between the transmission motor 2 and the output shaft support 5 at the top end of the base 1, the adjustment mechanism in the embodiment is an adjustment motor 7, a transmission screw 8 is fixedly arranged on an output shaft of the adjustment motor 7 through a coupler, the transmission screw 8 penetrates through the output shaft support 5 and is matched with the output shaft support 5 for transmission, the transmission screw 8 is matched and connected with the output shaft support 5 through a thread pair, and the adjustment motor 7 drives the transmission screw 8 to positively rotate or reversely rotate so as to realize the sliding of the output shaft support 5.

The mounting groove for installing the pressure sensor 9 is formed in the top end of the base 1, and the bottom end of the pressure sensor 9 is connected with the mounting groove in an interference fit mode. A force transmission spring 10 is arranged between the pressure sensor 9 and the output shaft support 5; a rotating speed iron core 15 is fixedly arranged on the side surface of the driving pulley 3 and the side surface of the driven pulley 4, a first photoelectric speed sensor 11 for detecting the rotating speed of the driving pulley 3 is arranged at the top end of the base 1 corresponding to the rotating speed iron core 15 of the driving pulley 3, and a second photoelectric speed sensor 12 for detecting the rotating speed of the driven pulley 4 is arranged at the top end of the base 1 corresponding to the rotating speed iron core 15 of the driven pulley 4; the first and second photo speed sensors 11 and 12 determine the rotation speed of the pulley by detecting the time interval when the rotation speed core 15 follows the rotation of the pulley. The controller 14 is arranged on the regulating mechanism, the pressure sensor 9, the first photoelectric speed sensor 11 and the second photoelectric speed sensor 12 are electrically connected with the controller 14, and the controller 14 controls the regulating motor 7 to work to drive the output shaft support 5 to move along the sliding rail 16 by feeding back an electric signal to the controller 14.

The driven shaft 502 is provided with a transmission gear 13 at an end far from the driven pulley 4 for meshing transmission with other gears.

Example 2

Comparing this embodiment with embodiment 1, the distinguishing technical features are that: the adjusting mechanism is a telescopic cylinder, the output end of the telescopic cylinder is fixedly connected with the output shaft support 5, and the controller 14 controls the telescopic pulling sliding support 501 to slide along the sliding rail 16. The other technical features of this embodiment are exactly the same as those of embodiment 1, and will not be described here again.

Working principle:

during initial tensioning of the belt 6: the adjusting motor 7 drives the transmission screw rod 8 to rotate, and the transmission screw rod 8 and the sliding support 501 are matched to be converted into sliding of the sliding support 501 along the guide rail, so that the center distance between the driving belt pulley 3 and the driven belt pulley 4 is increased to generate pretightening force, the pretightening force is transmitted to the pressure sensor 9 through the force transmission spring 10, the pressure sensor 9 senses the pressure change of the spring, and the pretightening force is fed back to the controller 14, so that the initial pretightening force is accurately controlled. When the process is tensioned: through the photoelectric speed sensor that is used for detecting driving pulley 3 and driven pulley 4 rotational speed respectively fixed mounting in the top of base 1, the controller 14 of adjustment mechanism is given in the real-time rotational speed transmission with driving pulley 3 and driven pulley 4, monitors and compares the rotational speed difference of owner, driven pulley through controller 14, and control adjustment mechanism promotes output shaft support 5 and removes, realizes the size of adjustment pretightning force in the transmission process.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.

Claims

1. The self-adaptive belt transmission tensioning device is characterized by comprising a base, wherein a transmission motor is fixedly arranged on one side of the top end of the base, a driving belt pulley is arranged on an output shaft of the transmission motor, an output shaft support is slidably arranged on the other side of the top end of the base, driven belt pulleys matched with the driving belt pulley through belt transmission are arranged on the output shaft support, photoelectric speed sensors for detecting the rotating speeds of the driving belt pulley and the driven belt pulleys are fixedly arranged on the top end of the base respectively, an adjusting mechanism for driving the output shaft support to slide along the length direction of the base is fixedly arranged between the transmission motor and the output shaft support on the top end of the base, a controller is arranged on the adjusting mechanism, a pressure sensor is fixedly arranged on the top end of the base, and a force transmission spring is arranged between the pressure sensor and the output shaft support; the pressure sensor and the two photoelectric speed sensors are electrically connected with the controller.

2. The adaptive belt drive tensioner of claim 1, wherein the output shaft support comprises a sliding support, a sliding rail is fixedly mounted on the top end of the base along the length direction of the base, a sliding groove matched with the sliding rail is formed in the bottom end of the sliding support, a driven shaft is mounted on the top end of the sliding support in a penetrating manner, the driven shaft is rotatably connected with the sliding support through a bearing, and the driven pulley is mounted on the driven shaft.

3. The adaptive belt drive tensioner of claim 1, wherein a rotational speed core is fixedly mounted on both the side of the driving pulley and the side of the driven pulley, a first photoelectric speed sensor is mounted on the top end of the base corresponding to the rotational speed core of the driving pulley, and a second photoelectric speed sensor is mounted on the top end of the base corresponding to the rotational speed core of the driven pulley.

4. The adaptive belt drive tensioner of claim 1, wherein the adjustment mechanism is an adjustment motor, and a drive screw is fixedly mounted on an output shaft of the adjustment motor, and the drive screw extends through and is driven in cooperation with the output shaft support.

5. The adaptive belt driven tensioner of claim 1, wherein the adjustment mechanism is a telescoping cylinder, an output of the telescoping cylinder being fixedly connected to the output shaft support.

6. The adaptive belt drive tensioner of claim 2, wherein the drive pulley is keyed to the output shaft of the drive motor and the driven pulley is keyed to the driven shaft.

7. The adaptive belt driven tensioner of claim 1, wherein a mounting groove for mounting the pressure sensor is provided at a top end of the base, and a bottom end of the pressure sensor is in interference fit connection with the mounting groove.

8. The adaptive belt drive tensioner of claim 2, wherein a drive gear is mounted to an end of the driven shaft remote from the driven pulley.