Automatic tightening device
By designing an automatic tightening device, the precise tightening of fasteners is achieved by using the torque mechanism and the detection mechanism, which solves the problem that manual tightening is difficult to achieve precise control, improves work efficiency and reduces costs.
Patent Information
- Application Number
- CN202422086151.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-08-27
AI Technical Summary
In the prior art, it is difficult to achieve precise control by manually tightening fasteners such as bolts or nuts, which can easily lead to excessive tightness or looseness, damage to parts and tools, and low working efficiency.
An automatic tightening device is designed, including a torque mechanism, a control mechanism and a detection mechanism. The torque mechanism consists of a driving component and a tightening component, real-time torque detection and feedback are achieved through static torque sensors, conductive rings and carbon brush components to ensure accurate control.
Accurate control of the torque of the fastener is achieved, avoiding too tight or too loose conditions, improving working efficiency, and compact structure and low cost.
Smart Images
Figure CN222957962U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fastener tightening equipment, in particular to an automatic tightening device. Background Art
[0002] Different specifications of bolts or nuts and other fasteners have different requirements for torque in different use occasions. In the production specifications of many products, a quantitative range of torque for fasteners such as bolts or nuts is given. Exceeding this range means that the bolts or nuts are tightened too tight or too loose. Whether it is too tight or too loose, it is easy to cause damage to parts and tools. However, in the prior art, the above situation is easy to occur when tightening fasteners such as bolts or nuts manually, and it is impossible to achieve precise control of the tightening of fasteners and the work efficiency is low.
[0003] Therefore, it is urgent to propose an automatic tightening device to solve the above problems. Utility Model Content
[0004] The utility model aims to provide an automatic tightening device, which can realize accurate control of the torque of fasteners, has high working efficiency, compact structure and low cost.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] Automatic tightening device, used for automatic tightening of fasteners, comprising:
[0007] A torque mechanism, the torque mechanism comprising a driving assembly and a tightening assembly, the driving assembly being capable of driving the tightening assembly to tighten the fastener;
[0008] A control mechanism, the control mechanism being electrically connected to the drive assembly to control the torque output of the drive assembly;
[0009] The detection mechanism comprises a static torque sensor, a conductive ring and a carbon brush assembly, wherein the rotating shaft of the static torque sensor is respectively connected to the output end of the driving assembly and the input end of the tightening assembly, the conductive ring is sleeved on the rotating shaft of the static torque sensor, and the control mechanism is electrically connected to the conductive ring through the carbon brush assembly to detect the torque output value of the driving assembly in real time and feed it back to the control mechanism through the conductive ring and the carbon brush assembly.
[0010] As an optional technical solution of the automatic tightening device, the driving assembly includes a motor and a reducer, the output shaft of the motor is connected to the reducer, and the output shaft of the reducer is connected to the rotating shaft of the static torque sensor.
[0011] As an optional technical solution for the automatic tightening device, the driving assembly also includes a transmission assembly, which includes a driving wheel, a driven wheel and a synchronous belt. The driving wheel is rotatably connected to the output shaft of the reducer, and the driven wheel is transmission-connected to the driving wheel through the synchronous belt. The rotating shaft of the driven wheel is connected to the input end of the tightening assembly.
[0012] As an optional technical solution for the automatic tightening device, the automatic tightening device also includes a fixed seat assembly, the fixed seat assembly includes a base and a fixed plate, the fixed plate is vertically arranged on the base, the reducer is fixed to one side of the fixed plate, and the output shaft of the reducer is passed through the fixed plate, the driving wheel is located on the other side of the fixed plate, and the rotating shaft of the driven wheel is rotatably connected to the fixed plate.
[0013] As an optional technical solution of the automatic tightening device, the automatic tightening device further includes a first protective cover, the first protective cover is buckled on the base, and the static torque sensor is located in the first protective cover.
[0014] As an optional technical solution of the automatic tightening device, the carbon brush assembly includes a carbon brush and an elastic member, one end of the elastic member is fixed to the top wall of the first protective cover, and the carbon brush is pressed and connected to the outer wall of the conductive ring through the elastic member.
[0015] As an optional technical solution of the automatic tightening device, the carbon brush assembly also includes a fixing plate, which is fixed to the top outer wall of the first protective cover, and the elastic member passes through the top wall of the first protective cover and is connected to the fixing plate.
[0016] As an optional technical solution for the automatic tightening device, the number of the conductive ring, the carbon brush, the elastic member and the fixed plate are all multiple, and the multiple conductive rings are arranged axially on the rotating shaft of the static torque sensor, and the conductive ring, the carbon brush, the elastic member and the fixed plate are all in one-to-one correspondence.
[0017] As an optional technical solution for the automatic tightening device, the automatic tightening device also includes a second protective cover, which is buckled on the base, and the second protective cover, the fixing plate and the base form a closed cavity, the transmission assembly and the first protective cover are both located in the closed cavity, and the tightening assembly passes through the second protective cover and is located outside the second protective cover.
[0018] As an optional technical solution of the automatic tightening device, the tightening assembly is a socket wrench.
[0019] Beneficial effects of the utility model:
[0020] The automatic tightening device provided by the utility model is used for the automatic tightening of fasteners, and specifically includes a torque mechanism, a control mechanism and a detection mechanism. The torque mechanism includes a driving component and a tightening component, and the driving component can drive the tightening component to tighten the fastener, thereby realizing the automatic tightening of the fastener and improving the work efficiency. The control mechanism is electrically connected to the driving component to control the torque output of the driving component, thereby realizing the precise tightening of the fastener and avoiding the over-tightening or over-loosening of the fastener. The detection mechanism includes a static torque sensor, a conductive ring and a carbon brush assembly, the rotating shaft of the static torque sensor is respectively connected to the output end of the driving component and the input end of the tightening component, the conductive ring is sleeved on the rotating shaft of the static torque sensor, and the control mechanism is electrically connected to the conductive ring through the carbon brush assembly to detect the torque output value of the driving component in real time and feed it back to the control mechanism through the conductive ring and the carbon brush assembly, and the torque output value is detected and fed back in real time, so that the control mechanism can control the torque more accurately.
[0021] In addition, the automatic tightening device has a reasonable design and a compact structure; it also utilizes a static torque sensor in conjunction with a conductive ring and a carbon brush assembly to realize dynamic torque detection, thereby saving equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 The internal structure of the automatic tightening device provided by the embodiment of the utility model is shown in FIG. Figure 1 ;
[0023] Figure 2 The internal structure of the automatic tightening device provided by the embodiment of the utility model is shown in FIG. Figure 2 ;
[0024] Figure 3 It is a schematic diagram of the external structure of the automatic tightening device provided by an embodiment of the utility model.
[0025] In the figure:
[0026] 100, driving assembly; 110, motor; 120, reducer; 130, transmission assembly; 200, tightening assembly; 300, static torque sensor; 400, conductive ring; 500, carbon brush assembly; 510, carbon brush; 520, elastic member; 530, fixing plate; 600, fixing seat assembly; 610, base; 620, fixing plate; 700, first protective cover; 800, second protective cover. DETAILED DESCRIPTION
[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0031] The automatic tightening device provided in this embodiment can achieve precise control of the torque of the fastener and has high working efficiency; it has a compact structure and low cost.
[0032] Specific as Figure 1 , Figure 2 and Figure 3As shown, the automatic tightening device is used for automatic tightening of fasteners, and specifically includes a torque mechanism, a control mechanism and a detection mechanism. The torque mechanism includes a driving component 100 and a tightening component 200. The driving component 100 can drive the tightening component 200 to tighten the fastener, thereby realizing automatic tightening of the fastener and improving work efficiency. The control mechanism is electrically connected to the driving component 100 to control the torque output of the driving component 100, thereby realizing accurate tightening of the fastener and avoiding over-tightening or over-loosening of the fastener. The detection mechanism includes a static torque sensor 300, a conductive ring 400 and a carbon brush assembly 500. The rotating shaft of the static torque sensor 300 is respectively connected to the output end of the driving assembly 100 and the input end of the tightening assembly 200. The conductive ring 400 is sleeved on the rotating shaft of the static torque sensor 300. The control mechanism is electrically connected to the conductive ring 400 through the carbon brush assembly 500 to detect the torque output value of the driving assembly 100 in real time and feed it back to the control mechanism through the conductive ring 400 and the carbon brush assembly 500. By real-time detection and feedback of the torque output value, the control mechanism can control the torque more accurately.
[0033] In addition, the automatic tightening device has a reasonable design and a compact structure; it also utilizes a static torque sensor 300 in conjunction with a conductive ring 400 and a carbon brush assembly 500 to realize dynamic torque detection, thereby saving equipment costs.
[0034] In this embodiment, the control mechanism is a PLC control system (not shown in the figure), and a human-machine interface is also provided for setting parameters and monitoring system status.
[0035] Further, the drive assembly 100 includes a motor 110 and a reducer 120, the output shaft of the motor 110 is connected to the reducer 120, and the output shaft of the reducer 120 is connected to the rotating shaft of the static torque sensor 300. The motor 110 provides precise rotation to ensure operation according to the set speed. The reducer 120 reduces the speed of the motor 110 and increases the output torque to meet the tightening requirements.
[0036] Furthermore, the driving assembly 100 further includes a transmission assembly 130, which includes a driving wheel, a driven wheel and a synchronous belt, wherein the driving wheel is rotatably connected to the output shaft of the reducer 120, the driven wheel is transmission-connected to the driving wheel through the synchronous belt, and the rotation shaft of the driven wheel is connected to the input end of the tightening assembly 200. The synchronous belt transmission is suitable for small torque tightening operations of fasteners such as bolts or nuts.
[0037] To make the structure of the automatic tightening device compact and to fix components such as the motor 110 and the speed reducer 120 on the automatic tightening device, the automatic tightening device further includes a fixed seat assembly 600. The fixed seat assembly 600 includes a base 610 and a fixing plate 620. The fixing plate 620 is vertically arranged on the base 610. The speed reducer 120 is fixed to one side of the fixing plate 620, and the output shaft of the speed reducer 120 passes through the fixing plate 620. The driving wheel is located on the other side of the fixing plate 620, and the rotating shaft of the driven wheel is rotatably connected to the fixing plate 620.
[0038] Continuing as Figure 2 shown, since the static torque sensor 300 is a high-precision instrument, to protect the static torque sensor 300, the automatic tightening device further includes a first protective cover 700. The first protective cover 700 is buckled on the base 610, and the static torque sensor 300 is located inside the first protective cover 700.
[0039] In this embodiment, the carbon brush assembly 500 includes a carbon brush 510 and an elastic member 520. One end of the elastic member 520 is fixed to the top wall of the first protective cover 700, and the carbon brush 510 is tightly pressed and connected to the outer wall of the slip ring 400 through the elastic member 520. The carbon brush 510 is tightly pressed against the slip ring 400 through the cooperation with the elastic member 520. After the carbon brush 510 wears, the elastic member 520 continuously presses the carbon brush 510 tightly. The carbon brush 510 always acts on the slip ring 400, with good electrical conductivity and long service life, making the signal conversion and transmission better.
[0040] Optionally, the elastic member 520 is a spring, which has a low cost.
[0041] Furthermore, the carbon brush assembly 500 further includes a fixing piece 530. The fixing piece 530 is fixed to the top outer wall of the first protective cover 700. The elastic member 520 passes through the top wall of the first protective cover 700 and is connected to the fixing piece 530, facilitating the fixing of the elastic member 520.
[0042] In this embodiment, the number of the slip rings 400, the carbon brushes 510, the elastic members 520 and the fixing pieces 530 are all multiple. The multiple slip rings 400 are arranged axially along the rotating shaft of the static torque sensor 300, and the slip rings 400, the carbon brushes 510, the elastic members 520 and the fixing pieces 530 correspond to each other one by one.
[0043] Continuing as Figure 3 shown, the automatic tightening device further includes a second protective cover 800. The second protective cover 800 is buckled on the base 610. The second protective cover 800, the fixing plate 620 and the base 610 form a closed cavity. The transmission assembly 130 and the first protective cover 700 are both located in the closed cavity. The tightening assembly 200 passes through the second protective cover 800 and is located outside the second protective cover 800.
[0044] In this embodiment, the tightening assembly 200 is a socket wrench.
[0045] The brief working process of the automatic tightening device will be briefly described below:
[0046] According to the specific tightening requirements of fasteners such as bolts or nuts, the required torque value is set through the human-machine interface of the PLC control system.
[0047] Start the PLC control system. According to the requirements of the preset program, the PLC control system controls the torque mechanism, detection mechanism, etc. (hereinafter referred to as "equipment") of the automatic tightening device to move to the designated working position. When the equipment reaches the designated working position, the PLC control system issues a pulse command to start the servo driver (not shown in the figure). The servo driver drives the motor 110, so that the motor 110 rotates the reduction gear 120, the transmission component 130, the static torque sensor 300 and the socket wrench at a set speed.
[0048] During the operation of the motor 110, the static torque sensor 300 monitors the current torque value in real time, and transmits the data to the PLC control system through the slip ring 400 and the carbon brush assembly 500. The PLC control system receives the real-time torque information transmitted by the static torque sensor 300 and compares it with the preset torque value; when the real-time torque value reaches the set value, the PLC control system issues a stop command to stop the operation of the motor 110.
[0049] Obviously, the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.
Claims
1. Automatic tightening device, used for automatic tightening of fasteners, characterized in that: include: A torque mechanism, the torque mechanism comprising a driving assembly (100) and a tightening assembly (200), the driving assembly (100) being capable of driving the tightening assembly (200) to tighten the fastener; A control mechanism, the control mechanism being electrically connected to the drive assembly (100) to control the torque output of the drive assembly (100); A detection mechanism, the detection mechanism comprising a static torque sensor (300), a conductive ring (400) and a carbon brush assembly (500), the rotating shaft of the static torque sensor (300) being respectively connected to the output end of the drive assembly (100) and the input end of the tightening assembly (200), the conductive ring (400) being sleeved on the rotating shaft of the static torque sensor (300), and the control mechanism being electrically connected to the conductive ring (400) through the carbon brush assembly (500) so as to detect the torque output value of the drive assembly (100) in real time and feed it back to the control mechanism through the conductive ring (400) and the carbon brush assembly (500).
2. The automatic tightening device according to claim 1, characterized in that: The driving assembly (100) comprises a motor (110) and a reducer (120), wherein an output shaft of the motor (110) is connected to the reducer (120), and an output shaft of the reducer (120) is connected to a rotating shaft of the static torque sensor (300).
3. The automatic tightening device according to claim 2, characterized in that: The driving assembly (100) further comprises a transmission assembly (130), wherein the transmission assembly (130) comprises a driving wheel, a driven wheel and a synchronous belt, wherein the driving wheel is rotationally connected to the output shaft of the reducer (120), the driven wheel is transmission-connected to the driving wheel via the synchronous belt, and the rotating shaft of the driven wheel is connected to the input end of the tightening assembly (200).
4. The automatic tightening device according to claim 3, characterized in that: The automatic tightening device also includes a fixed seat assembly (600), the fixed seat assembly (600) includes a base (610) and a fixed plate (620), the fixed plate (620) is vertically arranged on the base (610), the reducer (120) is fixed to one side of the fixed plate (620), and the output shaft of the reducer (120) is passed through the fixed plate (620), the driving wheel is located on the other side of the fixed plate (620), and the rotating shaft of the driven wheel is rotatably connected to the fixed plate (620).
5. The automatic tightening device according to claim 4, characterized in that: The automatic tightening device further comprises a first protective cover (700), wherein the first protective cover (700) is buckled on the base (610), and the static torque sensor (300) is located inside the first protective cover (700).
6. The automatic tightening device according to claim 5, characterized in that: The carbon brush assembly (500) comprises a carbon brush (510) and an elastic member (520), one end of the elastic member (520) is fixed to the top wall of the first protective cover (700), and the carbon brush (510) is pressed and connected to the outer wall of the conductive ring (400) through the elastic member (520).
7. The automatic tightening device according to claim 6, characterized in that: The carbon brush assembly (500) further comprises a fixing plate (530), wherein the fixing plate (530) is fixed to the top outer wall of the first protective cover (700), and the elastic member (520) passes through the top wall of the first protective cover (700) and is connected to the fixing plate (530).
8. The automatic tightening device according to claim 7, characterized in that: The conductive ring (400), the carbon brush (510), the elastic member (520) and the fixing plate (530) are all in multiple numbers, and the multiple conductive rings (400) are arranged axially on the rotating shaft of the static torque sensor (300), and the conductive ring (400), the carbon brush (510), the elastic member (520) and the fixing plate (530) are all in one-to-one correspondence.
9. The automatic tightening device according to claim 5, characterized in that: The automatic tightening device also includes a second protective cover (800), which is buckled on the base (610). The second protective cover (800), the fixing plate (620) and the base (610) form a closed cavity. The transmission assembly (130) and the first protective cover (700) are both located in the closed cavity. The tightening assembly (200) passes through the second protective cover (800) and is located outside the second protective cover (800).
10. The automatic tightening device according to claim 1, characterized in that: The tightening assembly (200) is a socket wrench.