阅读说明：本技术 一种电驱式自动对中锁轴装置 (Electrically-driven automatic centering shaft locking device ) 是由 张磊乐 杨洪涛 武艺泳 牛建涛 郭永才 刘珉 高超峰 于 2021-02-04 设计创作，主要内容包括：一种电驱式自动对中锁轴装置,其特征在于：所述装置包括以平行设置的方式安装在底座上方纵向中轴线两侧的X向滑轨、安装在X向滑轨上的X向底座、以平行设置的方式安装在X向底座上方横向中轴线两侧的Y向滑轨、安装在Y向滑轨上的Y向底座、用于驱动X向底座和Y向底座复位的X向复位弹簧和Y向复位弹簧、以及安装在Y向底座上方的锁轴动作执行机构；所述锁轴动作执行机构包括两端分别通过丝杠支撑座以横向设置的方式安装在Y向底座上方、并由动力源驱动的两端旋向相反且旋装有左、右旋丝母的双旋向丝杆,以相对设置的方式分别与正、反相丝母相结合的两个夹紧头机构,平行设置在双旋向丝杆两侧的导轨、以及与导轨滑动配合的用于支撑夹紧头机构的支撑滑架。(The utility model provides an electricity drives formula automatic centering lock axle device which characterized in that: the device comprises X-direction slide rails which are arranged on two sides of a longitudinal central axis above a base in a parallel mode, an X-direction base which is arranged on the X-direction slide rails, Y-direction slide rails which are arranged on two sides of a transverse central axis above the X-direction base in a parallel mode, a Y-direction base which is arranged on the Y-direction slide rails, an X-direction return spring and a Y-direction return spring which are used for driving the X-direction base and the Y-direction base to return, and a locking shaft action executing mechanism which is arranged above the Y-direction base; the locking shaft action executing mechanism comprises a double-rotation-direction screw rod, two ends of the double-rotation-direction screw rod are respectively arranged above the Y-direction base in a transverse arrangement mode through a screw rod supporting seat, two ends of the double-rotation-direction screw rod driven by a power source are oppositely rotated and are provided with a left screw nut and a right screw nut, two clamping head mechanisms are respectively combined with a positive screw nut and a negative screw nut in an opposite arrangement mode, guide rails are arranged on two sides of the double-rotation-direction screw rod in parallel, and a supporting sliding frame is matched with the guide rails in a sliding mode and used for supporting.)

1. The utility model provides an electricity drives formula automatic centering lock axle device which characterized in that: the device comprises X-direction slide rails (2) which are arranged on two sides of a longitudinal central axis above a base (1) in a parallel mode, an X-direction base (3) which is arranged on the X-direction slide rails (2), Y-direction slide rails (4) which are arranged on two sides of a transverse central axis above the X-direction base in a parallel mode, a Y-direction base (5) which is arranged on the Y-direction slide rails, an X-direction return spring (14) and a Y-direction return spring (13) which are used for driving the X-direction base (3) and the Y-direction base (5) to return, and a lock shaft action executing mechanism which is arranged above the Y-direction base (5); the lock shaft action executing mechanism comprises a double-rotation-direction screw rod (7) with two ends respectively installed above a Y-direction base (5) in a transverse setting mode through a screw rod supporting seat (6) and with two ends driven by a power source (12) rotating oppositely and provided with a left screw nut and a right screw nut, two clamping head mechanisms (9) combined with the positive screw nut and the reverse screw nut respectively in an opposite setting mode, guide rails arranged on two sides of the double-rotation-direction screw rod in parallel, and a supporting sliding frame (8) which is matched with the guide rails in a sliding mode and used for supporting the clamping head mechanisms.

2. The electrically driven self-centering shaft locking device of claim 1, wherein: two sides of the bottom of a clamping head base of the clamping head mechanism (9) are respectively connected with a supporting sliding frame (8), four bushings (9-4) are embedded on the vertical surface of the clamping head base in an evenly distributed mode, a guide rod (9-2) penetrates through each bushing in a sliding fit mode, and the other end of each guide rod (9-2) penetrates through a pressure spring (9-3) to be connected with a cambered surface chuck (9-1).

3. The electrically driven self-centering shaft locking device of claim 1, wherein: the X-direction return spring (14) is arranged between the X-direction base (3) and the base (1), the Y-direction return spring (13) is arranged between the Y-direction base (5) and the X-direction base (3), the shaft locking action executing mechanism can realize automatic centering when locking a shaft, and after the shaft is loosened, the device can return to an initial position under the action of the return spring.

Technical Field

The invention relates to an electrically-driven automatic centering shaft locking device which can be used for braking and locking a rotating shaft.

Technical Field

Rotary motion is the most common mechanical action in mechanical equipment and is used all the time. For locking of a rotating shaft, currently, the shaft is locked tightly by adopting a pneumatic or hydraulic driving structure, auxiliary equipment such as an air compressor or a hydraulic station is required to be equipped, the operation is relatively complex, the operation is noisy, the requirement on the precision of the installation position is high, otherwise, an additional load is applied to the shaft when the shaft is locked, and a support bearing of the locked shaft is easily damaged.

Disclosure of Invention

The invention aims to provide the electric-drive type automatic centering shaft locking device aiming at the defects in the prior art, the shaft locking device can lock a rotating shaft by one motor drive, and a shaft locking mechanism can automatically center without applying additional load to the shaft.

The object of the invention can be achieved by the following technical measures:

the invention discloses an electrically-driven automatic centering shaft locking device, which comprises X-direction slide rails arranged on two sides of a longitudinal central axis above a base in a parallel arrangement mode, an X-direction base arranged on the X-direction slide rails, Y-direction slide rails arranged on two sides of a transverse central axis above the X-direction base in a parallel arrangement mode, a Y-direction base arranged on the Y-direction slide rails, an X-direction return spring and a Y-direction return spring for driving the X-direction base and the Y-direction base to return, and a shaft locking action executing mechanism arranged above the Y-direction base; the locking shaft action executing mechanism comprises a double-rotation-direction screw rod, two clamping head mechanisms, guide rails and a supporting sliding frame, wherein two ends of the double-rotation-direction screw rod are respectively arranged above a Y-direction base in a transverse arrangement mode through a screw rod supporting seat, two ends of the double-rotation-direction screw rod are driven by a power source, the two rotation directions of the double-rotation-direction screw rod are opposite, and a left screw nut and a right screw nut are screwed in the double-rotation-direction screw rod; the two clamping head mechanisms can perform locking and releasing actions on the locked shaft under the driving of the screw rod.

Two sides of the bottom of a clamping head base of the clamping head mechanism are respectively connected with a supporting sliding frame, four bushings are embedded on the vertical surface of the clamping head base in an evenly distributed mode, a guide rod penetrates through each bushing in a sliding fit mode, and the other end of each guide rod penetrates through a pressure spring to be connected with a cambered surface chuck.

X install to the reset spring X to between base and the base, Y installs to the reset spring Y to between base and the X to the base, lock axle action actuating mechanism can realize automatic centering during the lock axle, the counter shaft relaxs the back, the device can get back to initial position under reset spring's effect.

Specifically, the key technical features of the invention are as follows:

the adopted screw rod is a double-rotation-direction screw rod with two opposite rotation directions at two ends, and shaft locking and loosening motions of the clamping head mechanism pair can be realized through the driving of a motor;

secondly, by setting the movement combination in the X direction and the Y direction, the shaft locking action executing mechanism can realize the automatic centering of the locked shaft;

and thirdly, clamping force can be applied to the locked shaft uninterruptedly through the arrangement of the guide rod and the pressure spring.

The working principle and the beneficial effects of the invention are as follows:

the driving screw rod in the locking shaft action executing mechanism is a double-rotation-direction screw rod with two opposite rotation directions, one end is in left rotation, the other end is in right rotation, the two ends are matched with nuts, the two clamping head mechanisms are respectively connected with the two nuts, when the screw rod rotates, the two clamping head mechanisms simultaneously move towards the approaching direction or the far direction, and the device is driven by one motor, so that the locked shaft can be locked and released. Through setting up the pressure spring in the tight first mechanism of clamp, the counter shaft locking back, driving motor stall band-type brake, the pressure spring can realize being locked the incessant clamp force that exerts of axle. The locking shaft action actuating mechanism is arranged on the X-direction and Y-direction movement assembly to realize planar two-dimensional movement, when the locking shaft and the cambered surface chuck are not concentric, the shaft can have X-direction and Y-direction component forces on the cambered surface chuck when the shaft is clamped, under the action of force, the uppermost locking shaft action actuating mechanism of the device can move in the X-direction and Y-direction, and finally the locking device and the locked shaft are centered and concentric, at the moment, if the reset springs in the two directions have a certain amount of compression or stretching, after the shaft is loosened, the device returns to the initial position under the action of the reset springs to prevent interference with the rotating shaft.

In addition, the locking of the rotating shaft can be realized through one motor drive, other peripheral auxiliary equipment is not needed, the operation and the control are simple, the device can automatically center, additional load can not be applied to the shaft, and the device has popularization and application values.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic view of the installation of the double-rotation-direction screw rod and the clamping head base.

Fig. 4 is a schematic view of the clamping head mechanism.

In the figure: the device comprises a base 1, an X-direction slide rail 2, an X-direction base 3, a Y-direction slide rail 4, a Y-direction base 5, a screw rod support 6, a double-rotation-direction screw rod 7, a right-rotation screw nut 7-1, a left-rotation screw nut 7-1, a support sliding frame 8, a clamping head mechanism 9, a cambered chuck 9-1, a guide rod 9-2, a pressure spring 9-3, a bushing 9-4, a clamping head base 9-5, a locked shaft 10, a shaft coupling 11, a power source 12, a Y-direction return spring 13 and an X-direction return spring 14.

Detailed Description

The invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1 and 2, the electrically-driven automatic centering shaft locking device of the present invention includes an X-direction slide rail 2 installed on both sides of a longitudinal central axis above a base 1 in a parallel manner, an X-direction base 3 installed on the X-direction slide rail 2, a Y-direction slide rail 4 installed on both sides of a transverse central axis above the X-direction base in a parallel manner, a Y-direction base 5 installed on the Y-direction slide rail, an X-direction return spring 14 and a Y-direction return spring 13 for driving the X-direction base 3 and the Y-direction base 5 to return, and a shaft locking action executing mechanism installed above the Y-direction base 5; the lock shaft action executing mechanism comprises a double-rotation-direction screw rod 7 (see figure 3) with two ends respectively arranged above a Y-direction base 5 in a transverse arrangement mode through a screw rod supporting seat 6, two ends driven by a power source 12 and opposite rotation directions and provided with a left screw nut 7-1 and a right screw nut 7-2 in a rotation mode, two clamping head mechanisms 9 respectively combined with a positive screw nut and an opposite screw nut in an opposite arrangement mode, guide rails arranged on two sides of the double-rotation-direction screw rod in parallel, and a supporting sliding frame 8 which is in sliding fit with the guide rails and is used for supporting the clamping head mechanisms; when the double-rotation-direction screw rod rotates, the two clamping head mechanisms move towards the approaching direction or the far direction at the same time, and the device is driven by one motor, so that the locked shaft 10 can be locked and released.

X to reset spring 14 install X to between base 3 and the base 1, Y to reset spring 13 install Y to between base 5 and X to the base 3, lock the axle during the lock axle and move actuating mechanism and can realize automatic centering, the counter shaft relaxs the back, the device can get back to initial position under reset spring's effect.

Two sides of the bottom of a clamping head base of the clamping head mechanism 9 are respectively connected with a supporting sliding frame 8, four bushings 9-4 are embedded on the vertical surface of the clamping head base in an evenly distributed mode, a guide rod 9-2 penetrates through each bushing in a sliding fit mode, and the other end of each guide rod 9-2 penetrates through a pressure spring 9-3 to be connected with a cambered chuck 9-1 (see figure 4). After the counter shaft is locked, the pressure spring is pressed, the driving motor stops rotating the band-type brake, the pressure spring can realize that the clamping force is uninterruptedly exerted on the locked shaft 10, and other elastic elements such as a disc spring can be adopted to replace the pressure spring in specific implementation. When the locked shaft 10 and the cambered surface chuck 9-1 are not concentric, when the shaft is clamped by the shaft, the shaft has X-direction and Y-direction component forces on the cambered surface chuck, under the action of force, the uppermost shaft locking action actuating mechanism of the device can move in the X-direction and the Y-direction, and finally the locking device and the locked shaft 10 are centered and concentric, if the X, Y return springs in the two directions have a certain amount of compression or stretching, after the locked shaft 10 is loosened, the device returns to the initial position under the action of the return springs to prevent interference with the rotating shaft.