CN211361282U

CN211361282U - Nut screwing device

Info

Publication number: CN211361282U
Application number: CN201921877850.4U
Authority: CN
Inventors: 古小兵; 胡振华; 黄国君; 易钢杨
Original assignee: Yuanmeng Precision Technology Shenzhen Institute
Current assignee: Yuanmeng Precision Technology Shenzhen Institute
Priority date: 2019-11-01
Filing date: 2019-11-01
Publication date: 2020-08-28
Anticipated expiration: 2029-11-01

Abstract

The utility model belongs to the technical field of the fastener, especially, relate to a twist nut device. The nut screwing mechanism comprises a rack, and a nut screwing mechanism and a position adjusting mechanism which are installed on the rack, wherein the nut screwing mechanism comprises a mounting seat, a sleeve and a rotary driving piece, one end of the sleeve is provided with a nested part, the rotary driving piece is in driving connection with the sleeve to drive the sleeve to rotate, so that the nested part drives the nut to rotate and screw the nut, and the position adjusting mechanism is used for adjusting the position of the nut screwing mechanism relative to the nut to move the nested part to the position right above the nut. The nut screwing device can automatically screw a nut, the nut screwing mechanism can execute screwing operation after moving to an accurate position according to the position automatically adjusted by the nut position adjusting mechanism before operation, the nut screwing mechanism is moved and positioned automatically through the position adjusting mechanism, manual participation is not needed, the automation degree is high, the labor intensity of operators can be effectively reduced, and the nut screwing operation efficiency is improved.

Description

Nut screwing device

Technical Field

The utility model belongs to the technical field of the fastener, especially, relate to a twist nut device.

Background

In the field of mechanical engineering, nuts are very common fasteners, which are often used in conjunction with bolts or screws; when the nut is used, the nut needs to be screwed down by means of external force, so that the fastening effect can be achieved. In the prior art, a hook head wrench is often adopted to perform screwing operation, and during operation, an operator holds the hook head wrench to manually screw a nut, so that the labor intensity of manual operation is high, and the operation efficiency is low. In addition, when the nut is screwed up manually, the screwing torque acting on the nut cannot be accurately controlled, and an operator judges whether the nut is screwed up or not by experience, so that the nut is often screwed up incompletely due to inaccurate prejudgment, or the nut is damaged by sliding threads due to excessive force application.

With the development of mechanization and automation industries, a class of nut screwing machines capable of screwing nuts appears on the market, however, when the nut screwing machines are used, the nut screwing machines cannot automatically adjust the positions of the screwing heads relative to the nuts according to the specific positions of the nuts, and the nut screwing machines are often required to be manually controlled to move so that the screwing heads are opposite to the nuts, and the subsequent screwing operation can be executed. Therefore, even if the nut screwing machine is used for screwing the nut, the operation process still needs manual assistance, manual autonomous operation cannot be completely separated, and the automation degree is to be further improved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a twist nut device aims at solving the technical problem that the degree of automation of the nut screwing machine of prior art is lower, needs artifical supplementary shift positioning during the operation.

In order to achieve the above object, the utility model adopts the following technical scheme: a nut runner apparatus comprising:

a machine frame, a plurality of guide rails and a plurality of guide rails,

the nut screwing mechanism is arranged on the rack and comprises a mounting seat, a sleeve which is arranged on the mounting seat and is used for being matched with and nested with a nut, and a rotary driving piece which is used for driving the sleeve to rotate so as to provide screwing torque, a nesting part which is used for being matched and nested with the nut is arranged at one end, away from the mounting seat, of the sleeve, and a power output shaft of the rotary driving piece is in driving connection with the sleeve and is used for driving the sleeve to rotate around the axis of the sleeve, so that the nesting part drives the nut to rotate and screw the nut;

and the position adjusting mechanism is arranged on the rack and used for adjusting the position of the nut screwing mechanism relative to the nut, and the driving end of the position adjusting mechanism is in driving connection with the mounting seat so as to drive the mounting seat to drive the sleeve to move, so that the nesting part moves to the position right above the nut.

Further, position adjustment mechanism includes fixed plate, X axle adjustment subassembly and Y axle adjustment subassembly, the fixed plate install in the frame, Y axle adjustment subassembly with X axle adjustment subassembly from last to overlapping in proper order down install in on the fixed plate, Y axle adjustment subassembly with the mount pad is fixed, and is used for the drive reciprocating motion is made in Y axle direction to the mount pad, X axle adjustment subassembly with Y axle adjustment subassembly drive is connected, and is used for the drive Y axle adjustment subassembly drives the mount pad is together made reciprocating motion in X axle direction, X axle direction with Y axle direction all with telescopic axis direction is mutually perpendicular.

Furthermore, the X-axis adjusting assembly comprises a first connecting seat and an X-axis driving module used for driving the first connecting seat to reciprocate along the X-axis direction, and the Y-axis adjusting assembly comprises a second connecting seat and a Y-axis driving module used for driving the second connecting seat to reciprocate along the Y-axis direction; the X-axis driving module is installed on the fixing plate, the first connecting seat is arranged on the fixing plate in a sliding mode, the Y-axis driving module is installed on the first connecting seat, and the second connecting seat is arranged on the first connecting seat in a sliding mode and connected with the installation seat.

Furthermore, the first connecting seat is provided with a first through hole, the second connecting seat is provided with a second through hole, and the fixing plate is provided with a third through hole;

the mounting seat comprises a mounting cylinder for the sleeve to penetrate through and mount, the first end of the mounting cylinder is connected with the second penetrating hole in an interference fit manner, the second end of the mounting cylinder penetrates through the first penetrating hole and extends out of the third penetrating hole, the inner diameter of the third penetrating hole is larger than the outer diameter of the mounting cylinder, the inner diameter of the first penetrating hole is larger than or equal to the inner diameter of the third penetrating hole, and the end part of the nesting part extends out of the second end of the mounting cylinder;

the Y-axis driving module drives the second connecting seat to drive the mounting cylinder to reciprocate along the Y-axis direction so as to drive the sleeve to move in the third penetrating hole along the Y-axis direction, and the X-axis driving module drives the first connecting seat to drive the second connecting seat to reciprocate along the X-axis direction so as to drive the mounting cylinder together with the sleeve to move in the third penetrating hole along the X-axis direction so as to enable the nested part to move right above the nut.

Furthermore, the X-axis driving module comprises a first driving motor, a first transmission gear, a first transmission rack and a first sliding connection structure, the first driving motor is mounted on the fixed plate, the first transmission rack is mounted on the first connection seat and extends along the X-axis direction, the first connection seat is connected with the fixed plate in a sliding manner through the first sliding connection structure, the first transmission gear is sleeved on a driving shaft of the first driving motor and is connected with the first transmission rack in a meshing manner, and the first driving motor drives the first transmission gear to rotate, so that the first transmission rack is driven to drive the first connection seat to slide on the fixed plate along the X-axis direction;

the Y-axis driving module comprises a second driving motor, a second transmission gear, a second transmission rack and a second sliding connection structure, the second driving motor is installed on the side portion of the first connecting seat, the second transmission rack is installed on the second connecting seat and extends along the Y-axis direction, the second connecting seat is connected with the first connecting seat in a sliding mode through the second sliding connection structure, the second transmission gear is connected to the driving shaft of the second driving motor in a sleeved mode and is connected with the second transmission rack in a meshed mode, the second driving motor drives the second transmission gear to rotate, and therefore the second transmission rack is driven to pull the second connecting seat to slide and move on the first connecting seat along the Y-axis direction.

Further, the nut screwing mechanism further comprises a transmission assembly, the transmission assembly comprises a transmission shaft, the transmission shaft penetrates through the installation cylinder, the transmission shaft and the sleeve are provided with a first end and a second end which are opposite to each other, the nesting portion is arranged at the first end of the sleeve, the second end of the sleeve is connected with the second end of the transmission shaft, and the transmission shaft can be in reciprocating motion up and down along the axis direction of the transmission shaft in the installation cylinder under the action of external force, so that the sleeve is driven to reciprocate up and down to enable the nesting portion to be nested or separated from the nut.

Further, the transmission assembly still includes driving gear and driven gear that the meshing is connected, the mount pad still includes the mounting panel, rotary driving piece install in on the mounting panel, rotary driving piece's power output shaft with the driving gear is connected, the driving gear with driven gear rotate along the horizontal direction install in on the mounting panel, the mounting panel is just right connecting hole has been seted up to driven gear's position department, an installation section of thick bamboo is fixed in the below of mounting panel, the first end of transmission shaft is followed connecting hole is worn out and with driven gear cup joints.

Further, the transmission assembly further comprises a spline nut, a first bearing and a second bearing, the first bearing is fixedly embedded in the connecting through hole, the spline nut is sleeved at the first end of the transmission shaft, the spline nut and the transmission shaft form a ball spline, the spline nut penetrates through the first bearing and is fixed with an inner ring of the first bearing, one end of the spline nut extends out of the mounting plate and is in key connection with the driven gear, the second bearing is fixedly embedded in the mounting barrel, and the other end of the spline nut extends out of the connecting through hole and is fixed with an inner ring of the second bearing so as to be rotatably connected with the mounting barrel through the second bearing.

Further, the second end of transmission shaft with telescopic second end is connected through the transmission connecting piece, the transmission connecting piece includes first connector, second connector and link, first connector connect in the second end of transmission shaft, the second connector connect in telescopic second end, the second connector passes through the link with first connector rotates to be connected, thereby makes the sleeve can be relative the transmission shaft rotates.

Furthermore, the nut screwing mechanism further comprises a positioning assembly for limiting the sleeve to be coaxially connected with the transmission shaft, the positioning assembly comprises an elastic positioning piece which is coaxially arranged with the transmission shaft and sleeved outside the transmission shaft, one end of the elastic positioning piece is connected with the transmission shaft, and the other end of the elastic positioning piece is connected with the sleeve and elastically pushes against the sleeve, so that the axis of the sleeve and the axis of the transmission shaft are kept coincident.

The utility model provides an above-mentioned one or more technical scheme in the nut screwing device have one of following technological effect at least: set up and twist nut mechanism and be used for carrying out the operation of screwing up the nut, set up position adjustment mechanism and be used for adjusting the position of the relative nut of nut mechanism, during the operation, position adjustment mechanism drives the mount pad according to the concrete position drive mount pad of nut earlier and drives the sleeve and remove, and make telescopic nested portion remove to the nut directly over, and make nested portion and nut nested connection, afterwards, restart rotary driving spare output screw-up moment of torsion, rotary driving spare's power output shaft drive sleeve is rotatory around self axis, thereby the sleeve is rotatory to drive the rotation of nested portion of nesting on the nut simultaneously and is screwed up the nut, it can to break away from the nut to move the sleeve to nested portion again after the nut is screwed up. Therefore, by using the nut screwing device, not only can the automatic screwing of the nut be realized, but also the nut screwing mechanism can automatically adjust the position of the nut screwing mechanism relative to the nut according to the specific position of the nut before executing the screwing operation, the nut screwing mechanism is ensured to move to the accurate position and then execute the screwing operation, the movement and the positioning of the nut screwing mechanism are automatically adjusted through the position adjusting mechanism, the manual participation is not needed, the automation degree is high, the labor intensity of operators can be effectively reduced, and the nut screwing operation efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is a schematic structural view of a nut screwing device according to an embodiment of the present invention;

FIG. 2 is a schematic view of the nut runner assembly shown in FIG. 1 from another perspective;

FIG. 3 is a first cross-sectional view of the nut runner apparatus shown in FIG. 1;

FIG. 4 is a second cross-sectional view of the nut runner apparatus shown in FIG. 1;

FIG. 5 is a bottom view of the nut runner apparatus shown in FIG. 1;

FIG. 6 is a schematic view of a position adjustment mechanism of the nut runner apparatus shown in FIG. 1;

FIG. 7 is an exploded view of the position adjustment mechanism shown in FIG. 6;

fig. 8 is a schematic structural view of a nut runner mechanism of the nut runner apparatus shown in fig. 1;

FIG. 9 is an exploded schematic view of the nut runner mechanism shown in FIG. 8;

FIG. 10 is a cross-sectional view taken along line A-A of FIG. 8;

fig. 11 is a partially exploded schematic view of the nut runner mechanism shown in fig. 8.

Wherein, in the figures, the respective reference numerals:

10-sleeve 11-nested part 20-rotary driving piece

21-power output shaft 22-driving motor 23-speed reducer

24-X-axis adjusting assembly 25-Y-axis adjusting assembly 30-mounting seat

31-mounting plate 32-mounting cylinder 40-transmission assembly

41-driving gear 42-driven gear 43-transmission shaft

44-transmission connecting piece 45-spline nut 46-first bearing

47-second bearing 50-positioning component 51-elastic positioning piece

52-first spring fixing seat 53-second spring fixing seat 100-nut screwing mechanism

111-annular holding wall 200-position adjusting mechanism 201-fixing plate

241-first connecting seat 242-X-axis driving module 252-Y-axis driving module

251-second connecting seat 311-connecting through hole 431-anti-falling pin

441-first connector 442-second connector 443-connecting joint

2011-third through hole 2311-speed reducer fixing seat 2411-first through hole

2421 first driving motor 2422 first transmission gear 2423 first transmission rack

2424 first slide rail 2425 first slide block 2511 second through hole

2521-second drive Motor 2522-second Transmission Gear 2523-second Transmission Rack

2524 second slide rail 2525 second slider 2526 mounting Block

4411-first connection hole 4412-first connection lug 4421-second connection hole

4422-second engaging lug 4431-first engaging axle 4432-second engaging axle.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to fig. 1 to 11 are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

As shown in fig. 1-11, the embodiment of the utility model provides a screw nut device is applicable to and installs and overhaul etc. to the nut on the mechanical structure, is particularly useful for needing to use the nut that big moment of torsion could screw up, like the moment of torsion more than 150NM etc.. Specifically, as shown in fig. 1 to 4, the nut screwing device comprises a frame (not shown), a nut screwing mechanism 100 and a position adjusting mechanism 200, wherein the nut screwing mechanism 100 is mounted on the frame, the nut screwing mechanism 100 comprises a mounting seat 30, a sleeve 10 which is mounted on the mounting seat 30 and is used for adapting to a nested nut, and a rotary driving piece 20 which is used for driving the sleeve 10 to rotate so as to provide a screwing torque, a nesting part 11 which is used for adapting to the nested nut is arranged at one end of the sleeve 10, which is far away from the mounting seat 30, a power output shaft of the rotary driving piece 20 is in driving connection with the sleeve 10, and is used for driving the sleeve 10 to rotate around an axis thereof so as to enable the nesting part 11 to; the position adjusting mechanism 200 is used for adjusting the position of the nut screwing mechanism 100 relative to the nut, and the driving end of the position adjusting mechanism 200 is in driving connection with the mounting seat 30 so as to drive the mounting seat 30 to drive the sleeve 10 and the rotary driving member 20 to move, so that the nesting part 11 moves to the position right above the nut. Specifically, as shown in fig. 5, the nesting portion 11 is a groove recessed in the end of the sleeve 10 and capable of accommodating a nut, and an inner wall surface of the groove has an annular abutting wall 111 adapted to the shape of the nut, for example, when the nut to be screwed is a hexagon nut, the annular abutting wall 111 has six abutting wall surfaces corresponding to six side walls of the nut; thus, when the nut is nested in the nesting portion 11, the outer wall surface of the nut contacts the annular abutting wall 111, and when the sleeve 10 rotates, the nut abuts against the annular abutting wall 111 and can rotate along with the sleeve 10.

The utility model discloses nut screwing device, it is provided with nut screwing mechanism 100 and is used for carrying out the nut screwing operation, it is used for adjusting the position of the relative nut of nut screwing mechanism 100 to be provided with position adjustment mechanism 200, during the operation, position adjustment mechanism 200 drives sleeve 10 according to the concrete position drive mount pad 30 of nut earlier and removes, and make sleeve 10's nested portion 11 remove to the nut directly over, nested portion 11 and nut nested connection, afterwards, restart rotary driving piece 20 output screws up the moment of torsion, rotary driving piece 20's power output shaft drive sleeve 10 is rotatory around self axis, thereby sleeve 10 is rotatory to drive nested portion 11 rotation on the nut simultaneously and screw up the nut, it can to remove sleeve 10 to nested portion 11 separation nut after the nut is screwed up again. Thus, the nut screwing device can not only realize the automatic screwing of the nut, but also ensure that the position of the nut screwing mechanism 100 relative to the nut can be automatically adjusted by the position adjusting mechanism 200 according to the specific position of the nut before the nut screwing mechanism 100 executes the screwing operation, the nut screwing mechanism 100 is moved to the accurate position and then executes the screwing operation, the movement and the positioning of the nut screwing mechanism 100 are automatically adjusted by the position adjusting mechanism 200, the manual participation is not needed, the mechanization and the automation degree of the nut screwing operation are high, the labor intensity of operators can be effectively reduced, and the operation efficiency is improved.

In addition, in the process of screwing the nut, the screwing torque applied to the nut can be controlled by controlling the power output magnitude of the rotary driving piece 20, the torque output magnitude of the rotary driving piece 20 is set before operation, so that the torque output magnitude is matched with the torque required by screwing the nut, after the rotary driving piece 20 drives the sleeve 10 to apply the specified torque to the nut, the rotary driving piece 20 can be automatically stopped, the situation that the nut is damaged due to overlarge torque or the nut is not screwed in place due to undersize torque can be avoided, the screwed nut is not easy to loosen, and the fastening connection is more stable and reliable. In some specific embodiments, the electric component of the position adjusting mechanism 200 is in communication connection with a control device (not shown) outside the nut screwing device, and the external control device can obtain the position information of the nut, for example, a CCD is mounted on the frame to photograph the nut, so as to obtain the position information of the nut relative to the nesting portion 11, and calculate the precise position of the sleeve 10 relative to the nut, so as to control the position adjusting mechanism 200 to drive the nut screwing mechanism 100 to perform position adjustment according to the calculated data, so as to adjust the position of the sleeve 10 relative to the nut, so as to move the nesting portion 11 to be directly above the nut.

In another embodiment of the present invention, as shown in fig. 1 and 2, the position adjusting mechanism 200 includes a fixing plate 201, an X-axis adjusting assembly 24 and a Y-axis adjusting assembly 25, the fixing plate 201 is installed on the frame, the Y-axis adjusting assembly 25 and the X-axis adjusting assembly 24 are sequentially installed on the fixing plate 201 from top to bottom, the Y-axis adjusting assembly 25 is fixed to the mounting seat 30, and is used to drive the mounting seat 30 to move reciprocally in the Y-axis direction, the X-axis adjusting assembly 24 is connected to the Y-axis adjusting assembly 25 in a driving manner, and is used to drive the Y-axis adjusting assembly 25 to drive the mounting seat to move reciprocally in the X-axis direction together, the X-axis direction and the Y-axis direction are perpendicular to the Z-axis direction in fig. 1 and 2 with the axial direction of the sleeve 10, wherein, the X-axis, the Y-axis direction is the horizontal direction, and the Z. Specifically, the X-axis adjusting assembly 24 is arranged to drive the nut screwing mechanism 100 to move in the X-axis direction, the Y-axis adjusting assembly 25 is arranged to drive the nut screwing mechanism 100 to move in the Y-axis direction, that is, the position adjusting mechanism 200 drives the nut screwing mechanism 100 to move in a plane perpendicular to the axis (Z-axis) of the sleeve 10, so that the sleeve 10 of the nut screwing mechanism 100 is moved to be directly above the nut, and the distance of the sleeve 10 to the nut in the Z-axis direction can be driven by an external driving mechanism. During operation, the position adjusting mechanism 200 is started to drive the nut screwing mechanism 100 to move in the X, Y axis direction, when the nut screwing mechanism moves to the position where the nesting part 11 is located right above the nut, the external driving mechanism is started to drive the sleeve 10 to move towards the nut until the nesting part 11 nests the nut, and after the screwing operation is finished, the external driving mechanism drives the sleeve 10 to move away from the nut until the nesting part 11 is separated from the nut.

In the present embodiment, as shown in fig. 1 to 4, the X-axis adjusting assembly 24 includes a first connecting seat 241 and an X-axis driving module 242 for driving the first connecting seat 241 to reciprocate along the X-axis direction, and the Y-axis adjusting assembly 25 includes a second connecting seat 251 and a Y-axis driving module 252 for driving the second connecting seat 251 to reciprocate along the Y-axis direction; the X-axis driving module 242 is mounted on the fixing plate 201, the first connecting seat 241 is slidably disposed on the fixing plate 201, the Y-axis driving module 252 is mounted on the first connecting seat 241, and the second connecting seat 251 is slidably disposed on the first connecting seat 241 and connected to the mounting seat 30. When the position of the nut screwing mechanism 100 needs to be adjusted, the Y-axis driving module 252 is started, the Y-axis driving module 252 drives the second connecting seat 251 to drive the mounting seat 30 to move in the Y-axis direction, so as to drive the sleeve 10 to move from the Y-axis direction to the side part to face the nut, then, when the X-axis driving module 242 is started, the X-axis driving module 242 drives the first connecting seat 241 to drive the second connecting seat 251 and the mounting seat 30 to move together in the X-axis direction, so as to drive the sleeve 10 to move from the side part of the nut to the position right above the nut in the X-axis direction, and the structure of the position adjusting mechanism 200 and the position adjusting process thereof are simple.

In this embodiment, as shown in fig. 3 to 5, the first connecting base 241 is provided with a first through hole 2411, the second connecting base 251 is provided with a second through hole 2511, and the fixing plate 201 is provided with a third through hole 2011; the mounting seat 30 includes a mounting tube 32 for the sleeve 10 to be mounted in a penetrating manner, a first end of the mounting tube 32 is connected with the second penetrating hole 2511 in an interference fit manner, that is, the second connecting seat 251 is sleeved on the first end of the mounting tube 32, and the X-axis driving module 242 drives the second connecting seat 251 to move so as to drive the mounting tube 32 inserted into the second connecting seat 251 to move, so that the sleeve 10 inserted into the mounting tube 32 is further driven to move; further, the second end of the mounting cylinder 32 passes through the first insertion hole 2411 and extends out of the third insertion hole 2011, the inner diameter of the third insertion hole 2011 is larger than the outer diameter of the mounting cylinder 32, the inner diameter of the first insertion hole 2411 is larger than or equal to the inner diameter of the third insertion hole 2011, and the end where the nested part 11 is located extends out of the second end of the mounting cylinder 32, so that the first end of the sleeve 10, that is, the end where the nested part 11 is located, can reciprocate along the Y axis or the X axis within the range defined by the third insertion hole 2011, for the case that the relative position of the nested part 11 and the nut needs to be finely adjusted, the position movement of the sleeve 10 is defined within a certain range, which is beneficial to quickly moving the sleeve 10 to a specified position, and the error during position adjustment is relatively small. For example, when using the nut screwing device of this embodiment to be used for screwing up the nut on the train track, the nut screwing device is installed on outside maintenance platform truck, and nested portion 11 of sleeve 10 suspends the orbital top all the time in the maintenance in-process, when needing to screw up a certain nut, through maintenance platform truck drive nut screwing device carry out the position of large distance and shift, sleeve 10 just has moved to the top that corresponds the nut after the position shifts, at this moment, only need slightly adjust the position of sleeve 10, make its nested portion 11 move to just can to the nut.

Specifically, in the present embodiment, as shown in fig. 1, fig. 2 and fig. 5, the Y-axis driving module 252 drives the second connecting seat 251 to drive the mounting cylinder 32 to reciprocate along the Y-axis direction, so as to drive the sleeve 10 to move along the Y-axis direction in the third through-hole 2011, and the X-axis driving module 242 drives the first connecting seat 241 to drive the second connecting seat 251 to reciprocate along the X-axis direction, so as to drive the mounting cylinder 32 and the sleeve to move along the X-axis direction in the third through-hole 2011, so as to move the nesting portion 11 to a position right above the nut.

Preferably, in this embodiment, in an initial state, that is, before the position adjustment mechanism 200 performs position adjustment on the sleeve 10, the second insertion hole 2511, the first insertion hole 2411 and the third insertion hole 2011 are coaxially disposed, and axes of the three are overlapped with an axis of the mounting cylinder 32, so as to ensure that the mounting cylinder 32 is suspended in the middle of the first insertion hole 2411 and the third insertion hole 2011, when the X-axis driving module 242 and the Y-axis driving module 252 drive the nut screwing machine 100 to perform position adjustment, the mounting cylinder 32 (sleeve 10) can adjust a position in the third insertion hole 2011 in four directions, namely, the four directions have the same adjustment stroke, and the position adjustment of the sleeve 10 is more flexible. Of course, in some other embodiments, on the premise that the positioning installation of the installation cylinder 32 and the position adjustment mechanism 200 is satisfied, that is, on the premise that the second through hole 2511 is coaxial with the installation cylinder 32, the first through hole 2411 and the third through hole 2011 may not be coaxial with the second through hole 2511, but may be designed according to actual requirements.

In another embodiment of the present invention, as shown in fig. 4, fig. 6 and fig. 7, the X-axis driving module 242 specifically includes a first driving motor 2421, a first transmission gear 2422, a first transmission rack 2423 and a first sliding connection structure (not labeled in the figure), the first driving motor 2421 is installed on the fixing plate 201, the first transmission rack 2423 is installed on the first connection seat 241 and extends along the X-axis direction, the first connection seat 241 is slidably connected with the fixing plate 201 through the first sliding connection structure, the first transmission gear 2422 is sleeved on the driving shaft of the first driving motor 2421 and is engaged with the first transmission rack 2423, the first driving motor 2421 drives the first transmission gear 2422 to rotate, thereby driving the first transmission rack 2423 to pull the first connection seat 241 to slide and move on the fixing plate 201 along the X-axis direction, the X-axis driving module 242 is simple in structure and convenient to assemble. Specifically, in the present embodiment, as shown in fig. 4 and 7, the first sliding connection structure includes a first slide rail 2424 and a first slide block 2425, the first slide rail 2424 is disposed on the fixing plate 201 along the X-axis direction, the first slide block 2425 is disposed at a position of the first connection seat 241 corresponding to the first slide block 2425, specifically, the first connection seat 241 is a hollow seat with a hollow interior, and the first slide rail 2424 and the first slide block 2425 are both accommodated inside the first connection seat 241, so that the influence of foreign matters such as external dust on the sliding fit of the first slide rail 2424 and the first slide block 2425 can be avoided, and thus, the first sliding connection structure is disposed to limit the moving direction of the first connection seat 241 on the fixing plate 201, and ensure that the first connection seat 241 can only move along the X-axis direction, thereby further improving the position adjustment accuracy of the position adjustment mechanism 200.

Further, as shown in fig. 3, 6 and 7, the Y-axis driving module 252 specifically includes a second driving motor 2521, a second transmission gear 2522, a second transmission rack 2523 and a second sliding connection structure (not labeled in the figures), the second driving motor 2521 is mounted at a side portion of the first connection seat 241, specifically, the second driving motor 2521 is mounted at a side portion of the first connection seat 241 through a mounting block 2526, the second transmission rack 2523 is mounted on the second connection seat 251 and extends along the Y-axis direction, the second connection seat 251 is slidably connected with the first connection seat 241 through the second sliding connection structure, the second transmission gear 2522 is sleeved on a driving shaft of the second driving motor 2521 and is engaged with the second transmission rack 2523, the second driving motor 2521 drives the second transmission gear 2522 to rotate, so as to drive the second connection seat 251 to move on the first connection seat 241 in the Y-axis direction, the Y-axis driving module 252 has a simple structure and is convenient to assemble. Specifically, in the present embodiment, as shown in fig. 3 and 7, the second sliding connection structure includes a second sliding rail 2524 and a second sliding block 2525, the second sliding rail 2524 is disposed on the fixing plate 201 along the Y-axis direction, the second sliding block 2525 is disposed at a position of the second connection seat 251 corresponding to the second sliding block 2525, more specifically, the second connection seat 251 is a hollow seat with a hollow interior, and the second sliding rail 2524 and the second sliding block 2525 are both accommodated inside the second connection seat 251, so that it is avoided that foreign matters such as external dust and the like affect the sliding fit of the second sliding rail 2524 and the second sliding block 2525, and thus, the second sliding connection structure is disposed to limit the moving direction of the second connection seat 251 on the first connection seat 241, and ensure that the second connection seat 251 can only move along the Y-axis direction, thereby further improving the position adjustment accuracy of the position adjustment mechanism 200.

Furthermore, in the present embodiment, the first connecting seat 241 and the second connecting seat 251 are both hollow rectangular parallelepiped seats, the first transmission rack 2423 is fixed on one side wall of the first connecting seat 241, the second driving motor 2521 is fixed on the side wall of the first connecting seat 241 where the first transmission rack 2423 is disposed, the second transmission rack 2523 is fixed on one side wall of the second connecting seat 251, and the first transmission rack 2423 is perpendicular to the second transmission rack 2523.

In another embodiment of the present invention, as shown in fig. 1 and fig. 8 to 10, the nut screwing mechanism 100 further includes a transmission assembly 40, the transmission assembly 40 includes a transmission shaft 43, the transmission shaft 43 is disposed in the installation cylinder 32, the transmission shaft 43 and the sleeve 10 both have a first end and a second end, the nesting portion 11 is disposed at the first end of the sleeve 10, the second end of the sleeve 10 is connected to the second end of the transmission shaft 43, the transmission shaft 43 can move up and down along the axis direction of the installation cylinder 32 (i.e., the Z axis direction in fig. 1) under the action of external force, so as to drive the sleeve 10 to move up and down to nest the nesting portion 11 or separate from the nut. In this way, the transmission assembly 40 is provided to transmit the transmission, and the transmission assembly 40 can transmit the tightening torque of the rotary driving member 20 to the socket 10 through the transmission shaft 43.

Further, in this embodiment, as shown in fig. 8 to 10, the transmission assembly 40 further includes a driving gear 41 and a driven gear 42 engaged with each other, the mounting base 30 further includes a mounting plate 31, the rotary driving member 20 is mounted on the mounting plate 31, a power output shaft of the rotary driving member 20 is connected to the driving gear 41, the driving gear 41 and the driven gear 42 are rotatably mounted on the mounting plate 31 along a horizontal direction, specifically, the driving gear 41 is mounted on one side portion of the mounting plate 31, the driven gear 42 is mounted on the other side portion of the mounting plate 31, and the driven gear 42 and the driving gear 41 are disposed in a staggered manner in a vertical direction, so that a space above the driven gear 42 is free and does not interfere with. A connecting through hole 311 is formed in the position, facing the driven gear 42, of the mounting plate 31, the mounting cylinder 32 is fixed below the mounting plate 31, and the first end of the transmission shaft 43 penetrates out of the connecting through hole 311 and is sleeved with the driven gear 42. Thus, when the rotary driving member 20 is started, the power output shaft 21 of the rotary driving member 20 rotates and drives the driving gear 41 to rotate, the driving gear 41 rotates and drives the driven gear 42 to rotate, the driven gear 42 drives the transmission shaft 43 to rotate around the self axis, and the transmission shaft 43 further drives the sleeve 10 to rotate around the self axis, so as to tighten the nut. The transmission structure is simple and compact, the whole volume of the tightening mechanism is reduced, the tightening torque is transmitted through the meshing of the driving gear 41 and the driven gear 42, and nuts needing different tightening torques can be realized by replacing the driving gear 41 and the driven gear 42 with different transmission ratios, so that the use is more flexible and convenient.

When the nut screwing device of the embodiment is used for screwing, the transmission shaft 43 moves downwards in the mounting cylinder 32 along the axis thereof under the action of external force and drives the first end of the sleeve 10 to move to be close to the nut, so that the nested part 11 at the first end of the sleeve 10 is nested in the nut, otherwise, after the screwing operation is finished, the transmission shaft 43 drives the sleeve 10 to move reversely under the action of external force, so that the nested part 11 is separated from the nut. Driven gear 42 top does not set up other structures, driven gear 42 top is reserved has enough big space and is used for installing the outside actuating mechanism that drive transmission shaft 43 reciprocated, outside actuating mechanism's setting does not receive the influence of screwing up other structures of mechanism self, make the nut mechanism 100 of twisting of this embodiment can be better use with external equipment cooperation, and, can confirm the installation space that the reservation size is suitable through changing driven gear 42 of different size of a dimension, with the actuating mechanism who matches different size of a volume, other original structures can not interfered in the equipment repacking.

Furthermore, in the present embodiment, as shown in fig. 9 to 11, the transmission assembly 40 further includes a spline nut 45, a first bearing 46 and a second bearing 47, the first bearing 46 is embedded in the connecting through hole 311, the driven gear 42 is sleeved outside the spline nut 45, the spline nut 45 is sleeved at the first end of the transmission shaft 43, and the spline nut 45 and the transmission shaft 43 form a ball spline; the spline nut 45 penetrates through the first bearing 46 and is fixed with the inner ring of the first bearing 46, one end of the spline nut 45 extends out of the mounting plate 31 and is in key connection with the driven gear 42, such as flat key connection and the like, the second bearing 47 is embedded in the mounting cylinder 32, and the other end of the spline nut 45 extends out of the connecting through hole 311 and is fixed with the inner ring of the second bearing 47 so as to be rotatably connected with the mounting cylinder 32 through the second bearing 47.

Specifically, in the present embodiment, as shown in fig. 9 and 11, the transmission shaft 43 is a spline shaft, and the outer wall surface of the first end of the transmission shaft is provided with a plurality of rail protrusions (not shown) at uniform intervals, for example, three rail protrusions are equally spaced at 120 ° on the outer wall surface of the transmission shaft 43, six load ball rows are formed on the outer wall surface of the transmission shaft 43, and the balls at the corresponding positions of the spline nuts are clamped between the load ball rows on the left and right sides of the corresponding rail protrusions, so that the friction between the outer wall surface of the transmission shaft 43 and the outer wall surface of the spline nut 45 can be reduced, thereby saving the external acting force for driving the transmission shaft 43 to move. More specifically, a slip-off preventing pin 431 is further vertically connected to the middle portion of the transmission shaft 43, the length of the slip-off preventing pin 431 is greater than the outer diameter of the spline nut 45, and the slip-off preventing pin 431 can be used for preventing the transmission shaft 43 from being pulled out of the mounting cylinder 32 under the action of external force.

In another embodiment of the present invention, as shown in fig. 9 to 11, the second end of the transmission shaft 43 is connected to the second end of the sleeve 10 through a transmission connector 44, the transmission connector 44 includes a first connector 441, a second connector 442 and a connecting joint 443, the first connector 441 is connected to the second end of the transmission shaft 43, the second connector 442 is connected to the second end of the sleeve 10, and the second connector 442 is rotatably connected to the first connector 441 through the connecting joint 443. Thus, the sleeve 10 can rotate relative to the transmission shaft 43, when the sleeve 10 moves to the nesting portion 111 to be sleeved with the nut, the nut and the transmission shaft 43 are not concentric, and by arranging the transmission connecting piece 44, the sleeve 10 rotates to adjust the connecting angle between the sleeve 10 and the transmission shaft 43, the nut and the transmission shaft 43 rotate coaxially, the nut rotates more smoothly, and the tightening operation is more labor-saving and reliable.

Specifically, in the present embodiment, as shown in fig. 9 to 11, a first connecting shaft 4431 and a second connecting shaft 4432 are protruded from a side wall of the connecting joint 443 and are arranged in a crisscross manner, the first connecting head 441 is rotatably connected to the connecting joint 443 via the first connecting shaft 4431, the second connecting head 442 is rotatably connected to the connecting joint 443 via the second connecting shaft 4432, and the first connecting head 441, the connecting joint 443, and the second connecting head 442 together form a universal joint structure. In this way, the connecting joint 443 is rotatably connected to the first connecting head 441 by the first connecting shaft 4431 and can rotate around the first connecting shaft 4431, and the connecting joint 443 is rotatably connected to the second connecting head 442 by the second connecting shaft 4432 and can rotate around the second connecting shaft 4432, so that the sleeve 10 can rotate around the first connecting shaft 4431 and the second connecting shaft 4432. Specifically, two first connecting lugs 4412 which are oppositely arranged are protruded from the end of the second connecting head 442 facing the first connecting head 441, two first connecting holes 4411 through which the first connecting shaft 4431 is rotatably inserted are respectively formed in the two first connecting lugs 4412, two second connecting lugs 4422 which are oppositely arranged are protruded from the end of the first connecting head 441 facing the second connecting head 442, two second connecting holes 4421 through which the second connecting shaft 4432 is rotatably inserted are respectively formed in the two second connecting lugs 4422, and the hole axes of the first connecting hole 4411 and the second connecting hole 4421 are both perpendicular to the axis of the mounting cylinder 32.

In another embodiment of the present invention, as shown in fig. 8 to 11, the nut screwing mechanism 100 further includes a positioning assembly 50 for limiting the coaxial connection between the sleeve 10 and the transmission shaft 43, the positioning assembly 50 includes an elastic positioning member 51 coaxially disposed with the transmission shaft 43 and sleeved outside the transmission shaft 43, one end of the elastic positioning member 51 is connected to the transmission shaft 43, and the other end of the elastic positioning member 51 is connected to the sleeve 10 and elastically supports against the sleeve 10, so that the axis of the sleeve 10 and the axis of the transmission shaft 43 are kept coincident. In this way, when the tightening operation is not performed, that is, the socket 10 is always kept coaxial with the transmission shaft 43 in the initial state, the position of the socket 10 can be used as a positioning reference when the nut runner mechanism 100 is assembled with other equipment, and when the nut runner mechanism 100 is moved, the socket 10 can be moved to a predetermined position more quickly by using this as a reference. In addition, when the socket 10 is rotatably connected to the transmission shaft 43 through the transmission connector 44, the socket 10 may shake during the moving process, at this time, the elastic positioning element 51 is disposed to push the socket 10, and during the moving process, the elastic positioning element 51 elastically restrains the socket 10 so that the socket cannot shake, thereby facilitating the fast and accurate movement of the socket 10, and enabling the nesting portion 11 to fast move to a position right above the nut.

Specifically, in the embodiment, as shown in fig. 9 to 11, the elastic positioning element 51 is a spring sleeved outside the transmission shaft 43, the positioning assembly 50 further includes a first spring fixing seat 52 and a second spring fixing seat 53 whose outline is adapted to the installation cylinder 32, the first spring fixing seat 52 is sleeved at the second end of the transmission shaft 43, the second spring fixing seat 53 is sleeved at the second end of the sleeve 10, two opposite end portions of the elastic positioning element 51 are respectively embedded in the first spring fixing seat 52 and the second spring fixing seat 53, when the transmission shaft 43 drives the first spring fixing seat 52 and the second spring fixing seat 53 to ascend to the predetermined position, the first spring fixing seat 52 and the second spring fixing seat 53 are accommodated in the installation tube 32, and outer wall surfaces of the first spring fixing seat 52 and the second spring fixing seat 53 are both in contact with an inner wall surface of the installation tube 32 and can slide along the tube wall of the installation tube 32. So, when first spring fixing seat 52 and second spring fixing seat 53 were acceptd in installation section of thick bamboo 32, the position that sleeve 10 was located is the location reference position promptly, like this, set up first spring fixing seat 52 and second spring fixing seat 53 location installation elastic positioning element 51, elastic positioning element 51's dismouting is more convenient, and, first spring fixing seat 52 and second spring fixing seat 53 can also be to elastic positioning element 51 its auxiliary stay's effect, the combined action of three makes sleeve 10 better keep under initial condition with the coaxial setting of transmission shaft 43.

More specifically, when the nut screwing operation is started, the transmission shaft 43 moves towards the nut under the action of external force, and the transmission shaft 43 moves and simultaneously extrudes the first positioning piece mounting seat 52, the second positioning piece mounting seat 53 and the elastic positioning piece 51 together to be pulled out from the mounting cylinder 32, at this time, the sleeve 10 can rotate relative to the transmission shaft 43 again.

In the present embodiment, as shown in fig. 9 and 10, the rotary driving member 20 includes a driving motor 22 and a speed reducer 23, an output shaft of the driving motor 22 is connected to an input shaft of the speed reducer 23, an output shaft of the speed reducer 23 is connected to a rotating shaft of the driving gear 41, the speed reducer 23 is fixedly mounted on the mounting plate 31 through a speed reducer fixing seat 2311, and the driving gear 41 is accommodated in the speed reducer fixing seat 2311. The speed reducer 23 can reduce the rotation speed of the drive motor 22 and increase the torque, so that the drive output power of the rotary drive member 20 can be set to be better matched with the tightening torque required by the nut. Specifically, the driving motor 22 is preferably a servo motor, which has the characteristics of small electromechanical time constant, high linearity, etc., and can convert the received electrical signal into an accurate angular displacement or angular velocity output, and the accuracy of the angular displacement or angular velocity output can reach 0.001 mm.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A nut runner apparatus, comprising:

a machine frame, a plurality of guide rails and a plurality of guide rails,

2. The nut threading device of claim 1, wherein: position adjustment mechanism includes fixed plate, X axle adjustment subassembly and Y axle adjustment subassembly, the fixed plate install in the frame, Y axle adjustment subassembly with X axle adjustment subassembly from last to overlapping in proper order down establish in on the fixed plate, Y axle adjustment subassembly with the mount pad is fixed, and is used for the drive reciprocating motion is made in Y axle direction to the mount pad, X axle adjustment subassembly with Y axle adjustment subassembly drive is connected, and is used for the drive Y axle adjustment subassembly drives the mount pad is together made reciprocating motion in X axle direction, X axle direction with Y axle direction all with telescopic axis direction is mutually perpendicular.

3. The nut threading device of claim 2, wherein: the X-axis adjusting assembly comprises a first connecting seat and an X-axis driving module used for driving the first connecting seat to reciprocate along the X-axis direction, and the Y-axis adjusting assembly comprises a second connecting seat and a Y-axis driving module used for driving the second connecting seat to reciprocate along the Y-axis direction; the X-axis driving module is installed on the fixing plate, the first connecting seat is arranged on the fixing plate in a sliding mode, the Y-axis driving module is installed on the first connecting seat, and the second connecting seat is arranged on the first connecting seat in a sliding mode and connected with the installation seat.

4. The nut threading device of claim 3, wherein:

the first connecting seat is provided with a first through hole, the second connecting seat is provided with a second through hole, and the fixing plate is provided with a third through hole;

5. The nut threading device of claim 3, wherein:

the X-axis driving module comprises a first driving motor, a first transmission gear, a first transmission rack and a first sliding connection structure, the first driving motor is installed on the fixed plate, the first transmission rack is installed on the first connecting seat and extends along the X-axis direction, the first connecting seat is connected with the fixed plate in a sliding mode through the first sliding connection structure, the first transmission gear is sleeved on a driving shaft of the first driving motor and is connected with the first transmission rack in a meshed mode, the first driving motor drives the first transmission gear to rotate, and therefore the first transmission rack is driven to pull the first connecting seat to slide on the fixed plate along the X-axis direction;

6. The nut threading device of claim 4, wherein: the nut screwing mechanism further comprises a transmission assembly, the transmission assembly comprises a transmission shaft, the transmission shaft penetrates through the installation cylinder, the transmission shaft and the sleeve are provided with a first end and a second end which are opposite to each other, the nesting portion is arranged at the first end of the sleeve, the second end of the sleeve is connected with the second end of the transmission shaft, and the transmission shaft can act on the installation cylinder in an external force manner to move up and down along the axis direction of the sleeve, so that the sleeve is driven to move up and down in a reciprocating manner to enable the nesting portion to be nested or separated from the nut.

7. The nut threading device of claim 6, wherein: the transmission assembly still includes driving gear and driven gear that the meshing is connected, the mount pad still includes the mounting panel, rotary driving piece install in on the mounting panel, rotary driving piece's power output shaft with the driving gear is connected, the driving gear with driven gear rotate along the horizontal direction install in on the mounting panel, the mounting panel is just right connecting hole has been seted up to driven gear's position department, an installation section of thick bamboo is fixed in the below of mounting panel, the first end of transmission shaft is followed connecting hole is worn out and with driven gear cup joints.

8. The nut threading device of claim 7, wherein: the transmission assembly further comprises a spline nut, a first bearing and a second bearing, the first bearing is fixedly embedded in the connecting through hole, the spline nut is sleeved at the first end of the transmission shaft, the spline nut and the transmission shaft form a ball spline, the spline nut penetrates through the first bearing and is fixed with the inner ring of the first bearing, one end of the spline nut extends out of the mounting plate and is in key connection with the driven gear, the second bearing is fixedly embedded in the mounting barrel, and the other end of the spline nut extends out of the connecting through hole and is fixed with the inner ring of the second bearing so as to be rotatably connected with the mounting barrel through the second bearing.

9. The nut threading device of claim 6, wherein: the second end of transmission shaft with telescopic second end is connected through the transmission connecting piece, the transmission connecting piece includes first connector, second connector and link, first connector connect in the second end of transmission shaft, the second connector connect in telescopic second end, the second connector passes through the link with first connector rotates and connects, thereby makes the sleeve can be relative the transmission shaft rotates.

10. The nut threading device of claim 6, wherein: the nut screwing mechanism further comprises a positioning assembly used for limiting the sleeve to be coaxially connected with the transmission shaft, the positioning assembly comprises an elastic positioning piece which is coaxially arranged with the transmission shaft and sleeved outside the transmission shaft, one end of the elastic positioning piece is connected with the transmission shaft, the other end of the elastic positioning piece is connected with the sleeve and elastically pushes against the sleeve, and therefore the axis of the sleeve and the axis of the transmission shaft are kept coincident.