KR101253506B1 - Bolting machine for swing bearing of heavy equipment - Google Patents

Abstract

PURPOSE: A bolt fastening machine for a swing bearing of heavy equipment is provided to accurately match the rotational center of a machine with the center of a swing bearing through identical moving of supporting racks, and to fasten the fastening bolts of the swing bearing with torque while the machine rotates on the rotational center. CONSTITUTION: A bolt fastening machine for a swing bearing of heavy equipment includes a position setting unit(100), a horizontal rotating unit(200), a linear moving unit(300), and a torque fastening unit(400). The position setting unit is mounted on the upper side of a swing bearing, and sets a central shaft(111) to be matched with the center of the swing bearing. The horizontal rotating unit on the upper side of the position setting unit horizontally rotates on the central shaft in the circumferential direction of the swing bearing. The linear moving unit on the upper side of the horizontal rotating unit linearly moves in the radial direction of the swing bearing. The torque fastening unit is installed in the linear moving unit, and a distance between the torque fastening unit and the swing bearing is adjustable. The torque fastening unit is interlocked with the rotation of the horizontal unit, and moves along the circumference of the swing bearing in order to fasten the fastening bolt of the swing bearing with a predetermined torque.

Description

Bolting device for heavy equipment swing bearings {Bolting machine for swing bearing of heavy equipment}

The present invention relates to a bolt fastening device of a heavy equipment swing bearing, and more particularly, it is possible to conveniently fasten the fastening bolt of the heavy equipment swing bearing with a prescribed set torque, which improves workability, in particular swing according to various heavy equipment models The present invention relates to a bolt fastening device for a heavy-duty swing bearing that can be applied to swing bearings of various sizes regardless of the different sizes of the bearings to perform torque tightening operations.

In general, heavy equipment such as excavators or tower cranes are largely divided into a lower body including a traveling device, and an upper swing body including a work device while being installed to be able to swing on the upper portion of the lower body, and the upper body with respect to the lower body. The swing bearing is mounted between the lower body and the upper swing body so that the swing body can be rotated.

The swing bearing of such heavy equipment is disclosed in Korean Patent Application Publication No. 10-2007-0049000 (published date: May 10, 2007), and Japanese Patent Publication No. 10-2007-0066530 (published date: June 27, 2007). Technical configuration is disclosed in detail in the prior document, Figure 1 shows an example in which the conventional swing bearing 20 is mounted on the lower body 30, referring to this, the swing bearing 20 is an inner ring It consists of a 21 and the outer ring 22, the inner ring 21 is fixed to the lower body 30, the outer ring 22 is fixed to the lower body 30 by being respectively fixed to the upper turning body (not shown) The upper pivot (not shown) is to be rotated relative to the operation.

In addition, the mounting structure of the swing bearing 20 and the lower body 30 is shown in cross-section in FIG. 2, which looks at the creative structure in detail with reference to the illustrated one, the circular protruding upward of the lower body 30. The bolt hole and the bolt tab respectively formed along the circumference of the support frame 31 of the lower body 30 and the inner ring 21 of the swing bearing 30 in the state in which the swing bearing 20 is seated on the support frame 31 of the support body 31. The fastening bolt (B) is fastened to the swing bearing 20 is made of a structure that is mounted to the lower body (30).

Here, the fastening bolts B fastened for mounting the swing bearing 20 and the lower body 30 are generally composed of 36 pairs, and all of them are fastened with the same torque specified in the swing bearing mounting. It is possible to secure the stability of.

Although the fastening device including a nut runner has been used for the torque fastening of the swing bearing fastening bolt, the conventional fastening device is difficult to install on the swing bearing and the torque fastening is not stable. When the size of the swing bearing is changed according to the change, the fastening operation cannot be performed at all.

The present invention is proposed to solve the above-mentioned conventional problems, an object of the present invention is to fasten the fastening bolt with a predetermined set torque while rotating along the circumference of the swing bearing in a state installed precisely centered on the swing bearing. It is to provide bolt fastening device of heavy equipment swing bearing which can improve the workability as well as the workability by easy and convenient installation and torque fastening work, and also improve the safety of swing bearing mounting through accurate torque fastening.

In addition, the object of the present invention is configured to perform the same installation and torque tightening work even if the size of the swing bearing is changed by applying torque to swing bearings of various sizes regardless of the different size of the swing bearing according to the various heavy equipment models It is to provide a bolting device for heavy duty swing bearings to perform the work.

As a problem solving means of the present invention for achieving the above object,

Positioning unit which is set on the upper part of the swing bearing and the position is set so that the center axis is coincident with the center of the swing bearing, and horizontal rotation is possible in the circumferential direction of the swing bearing about the center axis on the upper part of the position setting unit. A horizontal rotating unit installed, a linear moving unit installed on the upper portion of the horizontal rotating unit to enable linear movement in the radial direction of the swing bearing, and a distance between the center of the swing bearing installed on the linear moving unit is adjusted, and Disclosed is a bolt fastening device for a heavy duty swing bearing including a torque fastening unit for fastening a fastening bolt of a swing bearing to a set torque while being moved along a circumference of a swing bearing in conjunction with a rotation of a horizontal rotating unit.

Here, the position setting unit, the base frame is provided with the central axis in the center, and the support of the four pairs to be in close contact with the swing bearing while fixing the base frame while advancing in all directions about the central axis from the lower side of the base frame It may be configured to include a rack and four pairs of rack drivers for providing forward and backward movement force to each of the four pairs of support racks.

In addition, the position setting unit is rotatably coupled to the central axis in the lower side of the base frame, the rack interlocking to restrain the four pairs of support racks to be moved in the same rotation and movement of the four pairs of support racks It may be configured to further include a rotating plate.

In addition, four pairs of streamlined track grooves are radially formed around the central axis of the rack interlocking rotary plate, and four pairs of rack guiders coupled to the four pairs of support racks move along the track grooves in the track grooves. It can be installed possibly.

The horizontal rotating unit may include a horizontal rotating frame rotatably coupled to the central axis at an upper side of the position setting unit, and installed at a lower portion of the horizontal rotating frame to support the horizontal rotating frame and to rotate the horizontal rotating frame. It may be configured to include a plurality of wheel members for circular motion around the central axis of the city.

The horizontal rotating unit may further include a weight part installed on the horizontal rotating frame on the opposite side to which the linear moving unit is installed so that the central axis becomes the center of gravity of the horizontal rotating unit.

In addition, the linear movement unit, the linear movement guide is installed in the radial direction of the swing bearing in the horizontal rotation unit, and moved back and forth along the linear movement guide, the linear movement bar is installed at one end with the torque fastening unit and It may be configured to include a linear movement driver for providing forward and backward movement force to the linear movement bar.

In addition, the linear movement bar may be formed with a slit groove of a predetermined length, the linear movement guide may be formed so that the locking projection protrudes through the slit groove.

In addition, the torque fastening unit, the fixed frame is fixed to the linear movement unit, a torque applying tool for applying a set torque to the fastening bolt of the swing bearing and fastened by a lifting and lowering driver installed on the fixed frame while the It may be configured to include a tool lifting member for adjusting the vertical position of the torque application tool.

In addition, the torque application tool is provided in a pair, so that the interval between the pair of torque application tools can be adjusted, for this purpose, the torque fastening unit is a tool lifting by the spacing control driver installed in the tool lifting member And a tool spacing adjusting member which is moved back and forth toward the side of the member, wherein one torque application tool is fixedly supported by the tool lifting member while the other torque application tool is fixed to the tool spacing among the pair of torque application tools. It can be comprised so that it may be fixedly supported by a member.

Bolt fastening device of the heavy-duty swing bearing according to the present invention,

The installation and torque tightening work can be performed precisely because the bolts of the swing bearing can be tightened while the rotation center is installed while the center of rotation is exactly aligned with the center of the swing bearing through the support rack moving in the same motion. Yet, it can be performed conveniently and has the advantage of greatly improving workability due to bolting.

In addition, by tightening the torque precisely at the fastening position and by employing an electric nutrunner can fasten the fastening bolt with the prescribed torque, there is an advantage to ensure the safety of the swing bearing mounting.

In addition, even if the size of the swing bearing is different, it is configured to perform the same installation and torque tightening operation, so it is not necessary to be provided for each model, so that torque tightening work can be applied to swing bearings of various heavy equipment models with only a single device. It has the advantage of excellent compatibility.

In addition, multi-torque tightening is possible through a pair of torque application tools, which can shorten the working time required for torque tightening and improve the safety of the device by canceling the repulsive force generated when torque is applied. There are also advantages.

It is to be noted that, in addition to the effect specifically described above, a specific effect that can be easily derived and expected from the characteristic configuration of the present invention can also be included in the effect of the present invention.

1 is a perspective view illustrating a typical configuration of a swing bearing coupled to a lower body of heavy equipment,
Figure 2 is a cross-sectional view illustrating a mounting structure of the lower body and the swing bearing according to Figure 1,
Figure 3 is a perspective view showing the overall configuration of the bolting device of the heavy-duty swing bearing according to an embodiment of the present invention,
4 is a bottom perspective view of FIG. 1;
5 and 6 are bottom perspective views showing the configuration and operation of the position setting unit according to an embodiment of the present invention,
7 is a perspective view showing the configuration of a horizontal rotating unit and a linear moving unit according to an embodiment of the present invention,
8 is an exploded perspective view of a horizontal rotating unit and a linear moving unit according to an embodiment of the present invention,
9 and 10 are perspective views showing the configuration of the torque tightening unit according to an embodiment of the present invention, respectively, viewed from both directions,
11 is a perspective view illustrating a state immediately before the bolt fastening device of the heavy-duty swing bearing according to an embodiment of the present invention is installed on the swing bearing,
12 is a perspective view illustrating a state in which the bolt fastening device of the heavy-duty swing bearing according to an embodiment of the present invention is installed on the swing bearing,
FIG. 13 is an enlarged perspective view illustrating an enlarged portion of the position setting unit and the torque tightening unit in the installed state according to FIG. 12;
14 is an exemplary cross-sectional view illustrating the operation of the torque fastening unit for torque fastening the fastening bolt of the swing bearing.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the bolt fastening device of the heavy-duty swing bearing according to the present invention.

This embodiment is provided to more completely explain the present invention to those skilled in the art, the shape, size, spacing of the elements of the elements in the accompanying drawings to emphasize more clearly described. It should be noted that this may be reduced or exaggerated.

In addition, in describing an embodiment, when a component is described as being “connected”, “fixed” or “coupled” to another component, it may be directly connected to, fixed to, or coupled to the other component. It may be understood that other components may be present in the middle.

In addition, in the description of the embodiments, if it is determined that the technical features of the present invention may be unnecessarily obscured as a matter already known to those skilled in the art, such as known functions or known configurations, the details of the embodiments will be described in detail. The description will be omitted.

3 to 14 are views showing the bolt fastening device of the heavy-duty swing bearing according to an embodiment of the present invention, referring to the drawings, the bolt fastening device of the heavy-duty swing bearing according to an embodiment of the present invention ( 10, hereinafter, referred to as "bolt fastening device") is composed of a configuration including a position setting unit 100, a horizontal rotating unit 200, a linear movement unit 300, a torque fastening unit 400. Can be.

First, the position setting unit 100 performs a function of setting and fixing the position so that the bolt fastening device 10 of the present invention is seated on the top of the swing bearing 20 to be accurately positioned in the center of the swing bearing 20 That's the part.

The position setting unit 100 is shown in detail in FIGS. 5 and 6, referring to the base frame 110, the support rack 120, the rack driver 130, and the rack interlocking rotary plate ( 140 may be configured to include.

In the center of the base frame 110 is provided a central axis 111 to be the center of rotation of the horizontal rotating unit 200 to be described later.

The base frame 110, as shown, the overall shape may be made in a circular shape, in order to reduce the unnecessary weight of the outer circular edge portion 112 and the central axis 111 around the edge portion 112 Except for the cross-shaped connecting portion 113 that extends to the remaining portion may have an open form by cutting.

The support rack 120 is provided below the base frame 110 so that the central axis 111 of the base frame 110 coincides with the center of the swing bearing 20 to swing the base frame 110. 20) It performs the function of fixing the seating.

The support rack 120 is provided to move forward and backward, and moves forward from the center axis 111 side of the base frame 110 to be in close contact with the swing bearing 20 swing bearing the base frame 110 ( In addition to the fixing to 20, it is operated to release the base frame 110 with respect to the swing bearing 20 by moving backward toward the central axis 111 to be spaced apart from the swing bearing (20).

Here, the support rack 120 may be made of a plurality of base frame 110 is moved back and forth in a predetermined angle direction with respect to the center axis 111 to be stably fixed to the swing bearing (20). In particular, as shown in FIG. 5 and FIG. 6, the base frame 110 can be more stably fixed while being in close contact with the swing bearing 20 at 90 ° intervals. It is preferable that it consists of four pairs which move forward and backward, respectively.

And the end of each of the four pairs of the support rack 120 has a shape corresponding to the shape of the inner ring 21 and the outer ring 22 of the swing bearing 20 to be closely adhered to the swing bearing 20 while supporting the rack A rack close end 121 of an elastic material may be formed so that the 120 does not flow.

The rack driver 130 is fixed to the bottom of the base frame 110 and coupled with the support rack 120 to provide forward and backward movement force to the support rack 120.

Since the rack driver 130 provides a moving force to the support rack 120, when the support rack 120 is made up of four pairs, the rack driver 130 is also made up of four pairs correspondingly. .

The rack interlocking rotary plate 140 is constrained so that the four pairs of support racks 120, which are moved back and forth by the four pairs of rack drivers 130, move forward and backward with the same movement without a movement error. Perform the function.

This is because when the four pairs of the support racks 120 are in close contact with the swing bearing 20 while advancing in all directions about the central axis 111, the respective support racks 120 move in the same movement to swing the bearings 20. By being in close contact at the same time to the center axis 111 of the base frame 110 is to set the position so as to exactly match the center of the swing bearing (20).

The rack interlocking rotary plate 140 is coupled to the central axis 111 in the lower side of the base frame 10 to be freely rotated.

In addition, four pairs of streamlined track grooves 141 are formed radially around the central axis 111 in the rack interlocking rotary plate 140, and the four pairs of support holes in the four pairs of track grooves 141. Four pairs of rack guiders 142 coupled with the rack 120 are installed to be movable along the track groove 141.

Here, the rack interlocking rotary plate 140 may be formed in an open state by removing portions between the four pairs of track grooves 141 as shown in order to reduce unnecessary weight.

5 and 6, the support rack 120 is shown in a reversed state and the advanced state, respectively, as shown, by this configuration, by the operation of each rack driver 130 of the four pairs When the support racks 120 are moved in all directions, four pairs of rack guiders 142 coupled with the respective support racks 120 are interlocked and moved along the four pairs of track grooves 141. Since the movement is constrained to 140, the four pairs of support racks 120 can be moved forward and backward only with the same movement in accordance with a single rotational movement of the rack interlocking rotary plate 140, thereby supporting four pairs of supports. The rack 120 is at the same time able to be in close contact with the swing bearing 20 or spaced apart operation.

Position setting unit 100 of the above configuration is because the base frame 110 is fixed to the swing bearing 20 by the support rack 120 is moved forward and backward as described above regardless of the size of the swing bearing It can be seen that the same positioning function can be performed to the swing bearings 20 of various sizes.

Next, the horizontal rotation unit 200 is a torque tightening unit 400 to be described later in the state in which the bolt fastening device 10 of the present invention is installed on the swing bearing 20 by the position setting unit 100 is installed on the swing bearing 20 ) Is a part that performs a function to rotate in the circumferential direction of the swing bearing (20).

As shown in FIGS. 3 to 8, the horizontal rotating unit 200 is circumferentially formed in the circumferential direction of the swing bearing 20 about the central axis 111 at the top of the position setting unit 100. , Horizontally) may be installed to be rotatable, and may include a horizontal rotating frame 210, a wheel member 220, and a weight part 230.

The horizontal rotating frame 210 is coupled to enable rotation on the central axis 111 above the base frame 110 of the position setting unit 100.

The horizontal rotating frame 210 may have a variety of shapes, in consideration of the reduction in weight and structural safety may be formed in the cross (+) shape around the central axis (111).

The wheel member 220 is installed below the horizontal rotating frame 210 to support the horizontal rotating frame 210, the horizontal rotating frame 210 is rotated in the horizontal direction about the central axis 111 When doing, the circular motion along the upper surface of the base frame 110 with respect to the center axis 111 of the rotation center.

The wheel member 220 may be formed in plural for smooth rotation and stable support of the horizontal rotating frame 210. Each wheel member 220 is formed of four pairs as shown in each end of the horizontal rotating frame 210 having the cross shape. It is preferable to install.

 The weight part 230 performs a function of causing the center of gravity of the horizontal rotating unit 200 to coincide with the central axis 111 as the center of rotation.

In the horizontal rotating unit 200, since the linear movement unit 300 and the torque fastening unit 400 which will be described later are installed on one side of the central shaft 111, the center of gravity may be eccentric to the installed side, the weight part ( 230 is installed on the opposite side of the horizontal rotating frame 210 to achieve the balance of the overall weight so that the central axis 111 of the rotation center is the center of gravity of the horizontal rotation unit 200.

Accordingly, the weight part 230 may be designed in consideration of the overall weight distribution of the linear movement unit 300, the torque fastening unit 400, and other display panels or control panels that have not been described.

On the other hand, although not shown, such a horizontal rotation unit 200, the bolt fastening device 10 of the present invention in a hanger device that is generally installed in a heavy equipment manufacturing plant when moving the bolt fastening device 10 of the present invention. A hanger that can be hooked up may be provided on the upper side.

Next, the linear movement unit 300 is a part for performing a function to adjust the horizontal distance between the center of the swing bearing 20 and the torque fastening unit 400 to be described later.

As shown in FIGS. 7 and 8, the linear movement unit 300 is installed to enable the linear movement forward and backward in the radial direction of the swing bearing 20 on the horizontal rotation unit 200. The linear movement guide 310, the linear movement bar 320, and the linear movement driver 330 may be formed.

The linear guide 310 is installed in the radial direction of the swing bearing 20 on the horizontal rotating frame 210 of the horizontal rotating unit 200 to guide the forward and backward linear movement of the linear bar (320). As the linear movement guide 310, an LM guide may be employed.

The linear movement bar 320 is a linear movement forward and backward along the linear movement guide 310, the one end is fixed to the torque fastening unit 400 to be described later, and thus the linear movement bar 320 In accordance with the forward and backward movement of the torque fastening unit 400 to be described later the horizontal distance to the center of the swing bearing (20) is adjusted.

The linear movement driver 330 provides a moving force so that the linear movement bar 320 can move forward and backward.

On the other hand, as shown in Figure 8, the linear movement bar 320 may be formed with a slit groove 321 of a predetermined length along the longitudinal direction, the linear movement guide 310 to the slit groove 321 A locking protrusion 311 may protrude through the cover.

The slit groove 321 and the engaging projection 311 is to determine the moving range of the linear movement bar 320, the locking projection 311 is a slit groove when the linear movement bar 320 is moved within the movement range. While positioned within the 321 does not interfere with the movement of the linear bar 320, when the maximum range of forward and backward linear movement is reached, the linear bar bars 320 are selectively caught at both ends of the slit groove 321 to move the range. It is restricted from being moved in excess.

Next, the torque fastening unit 400 is a portion to fasten by applying a prescribed set torque to the fastening bolt (B) of the swing bearing (20).

9 and 10, the torque tightening unit 400, as shown in the torque tightening unit 400 is a fixed frame 410, the torque applying tool 420, the tool lifting member 430 It may be made, including.

The fixed frame 410 is fixed to the linear movement bar 320 of the linear movement unit 300, and serves to support the remaining components of the torque fastening unit 400.

A tool passing hole 411 may be formed on the upper surface of the fixed frame 410 so that the torque applying tool 420 to be described later can be lifted without interference.

The torque application tool 420 performs a function of fastening the fastening bolt B of the swing bearing 20 to the set torque, and the torque applying tool 420 is a nutrunner 421 which is a device for generating the set torque. Nut runner) and the bolt socket 422 which is mounted to the nut runner 421 so as to be replaced, and is applied to the fastening bolt B of the swing bearing 20 to apply the generated torque to the fastening bolt B. It may include.

Here, the nut runner 421, which is a device for generating torque, has a pneumatic type and an electric type. In the case of the pneumatic nut runner, it is difficult to control torque due to the characteristics of pneumatic pressure, so that it is difficult to apply torque for fastening the swing bearing. In the embodiment of the invention, it is preferable to employ an electric nutrunner called an ETC tool (Electric Torque Control Tool).

The tool lifting member 430 raises and lowers the torque applying tool 420 so that the vertical position of the torque applying tool 420 can be adjusted.

The tool lifting member 430 is lifted along one side of the fixed frame 410 by the lifting driver 431 installed on one side of the fixed frame 410.

In addition, a tool fixing bracket 432 is formed on the tool lifting member 430, and the torque applying tool 420 is fixed to the tool fixing bracket 432.

Accordingly, when the tool elevating member 430 is elevated by the operation of the elevating driver 431, the torque application tool 420 fixed to the tool fixing bracket 432 of the tool elevating member 430 is interlocked together. The vertical position of the torque application tool 420 is adjusted.

On the other hand, the torque application tool 420 may be provided in a pair to simultaneously tighten the two fastening bolts (B) of the swing bearing 20, at this time, the size of the swing bearing 20 Since the distance between the fastening bolts (B) is also changed when the change is different, the pair of torque application tool 420 is also preferably configured to variably adjust the interval, that is, the pitch (pitch) between each other.

To this end, the torque fastening unit 400 may further include a tool spacing adjusting member 440 to perform a function of adjusting the spacing between the pair of torque application tools 420.

The tool spacing adjusting member 440 is moved back and forth along one side of the tool raising and lowering member 430 by a space adjusting driver 441 installed on one side of the tool raising and lowering member 430.

In addition, the tool fixing bracket 442, which is the same as the tool fixing bracket 432 of the tool lifting member 430, is also formed on the tool gap adjusting member 440, and the tool fixing bracket 440 of the tool gap adjusting member 440 is formed. One of the pair of torque application tools 420 is fixed to 442. Here, the tool lifting member 430 so that the tool fixing bracket 442 of the tool gap adjusting member 440 can be moved without interfering with the tool lifting member 430 when the tool gap adjusting member 440 is moved laterally. The bracket passage 433 is formed.

As the tool interval adjusting member 440 is configured as described above, the torque application tool 420 on one side of the pair of torque application tools 420 is fixed to the tool fixing bracket 432 formed on the tool lifting member 430. On the other hand, the torque application tool 420 is fixed to the tool fixing bracket 442 formed in the tool spacing control member 440.

Accordingly, when the tool elevating member 430 is elevated by the operation of the elevating driver 431, the pair of torque applying tools 420 are elevated together with the vertical position being adjusted, and the gap adjusting driver is operated. When the tool interval adjusting member 440 moves forward and backward by the operation of the 441, only the torque application tool 420 of the other side moves forward and backward in a fixed state while the torque application tool 420 of the one side is fixed. The gap is adjusted between the pair of torque application tools 420 to each other.

Here, the configuration in which the torque application tool 420 is provided as a pair as described above is capable of tightening the two fastening bolts of the swing bearing 20 at the same time to improve the working speed, as well as torque A large reaction force is applied to the torque tightening unit 400 when the torque prescribed by the applying tool 420 to the tightening bolt B (the torque prescribed by the tightening regulation of the swing bearing is approximately 950 N · m) is applied. ) Is applied, the torque application tool 420 is configured in a pair to be able to offset the reaction force between each other to ensure the safety of the device.

On the other hand, the bolt fastening device 10 of the present invention having the configuration as described above is the operation of each of the rack driver 130, linear mover 330, elevating driver 431, spacing control driver 441 described above. A plurality of drive control panels for controlling and a torque control panel for setting the torque value of the nutrunner 421 and control the operation thereof, the drawings may include some of the control panels It can be seen that (P) is shown.

In addition, the bolt fastening device 10 of the present invention is a plurality of displays for respectively displaying the control status of the drive control panels or display the set torque value or torque change amount of the nut runner 421 so that the operator can easily recognize It may also include panels.

The configuration of the bolt fastening device 10 according to an embodiment of the present invention has been described above. Looking at the installation and operation thereof are as follows.

First, prior to explaining the installation and operation of the bolting device 10 according to the present invention look at the installation state of the swing bearing 20, as shown in Figures 1 and 2 support frame of the lower body (30) 31) the swing bearing 20 is seated on the circumference of each of the support frame 31 and the inner ring 21 of the swing bearing 20 at a predetermined interval (typically 36) of fastening bolts B Is combined.

The fastening bolt B coupled to the support frame 31 and the swing bearing 20 of the lower body 30 may be understood as a pretightened state rather than a fastened state with a prescribed torque, and the bolt according to the present invention. The fastening device 10 is to apply the torque specified in the fastening bolt (B) to perform the final bolt fastening work.

In the state in which the swing bearing 20 is coupled to the support frame 31 of the lower body 30 as described above, the bolt fastening device 10 according to the present invention is installed on the swing bearing 20. First, a heavy equipment manufacturing plant Hook the hanger (not shown) to the hanger installed in the moving the bolt fastening device 10 of the present invention to the upper portion of the swing bearing 20, and then lower the bolt fastening device 10 to bolt fastening device Position setting unit 100 of the (10) is to be positioned to the inside of the swing bearing (20).

FIG. 11 illustrates a state in which the bolt fastening device 10 of the present invention is positioned immediately above the swing bearing 20.

In this state, the installation of the bolt fastening device 10 is performed by the position setting unit 100. First, four pairs of rack drivers 130 of the position setting unit 100 are operated to provide four pairs of support racks 120. Move forward).

Then, the four pairs of support racks 120 are advanced in the same movement in all directions while being constrained by a single rotational motion of the rack interlocking rotary plate 140, and finally, the rack close ends 121 of the four pairs of support racks 120. ) Is in close contact with the four inner side of the inner ring 21 and the outer ring 22 of the swing bearing 20 at the same time, while the forward movement force by each rack driver 130 is continuously supported by the four pairs The base frame 110 of the positioning unit 100 is firmly fixed to the swing bearing 20 while being applied to the rack 120.

In addition, since the four pairs of support racks 120 are in close contact with the four points of the swing bearing 20 at the same time to support it, the central shaft 111 provided in the base frame 110 is accurately swing bearing 20. The state coincides with the center of.

As described above, when the central axis 111, which is the center of rotation, is set to match the center of the swing bearing 20, and the base frame 110 is firmly fixed to the swing bearing 20, the position setting unit Installation work by (100) is completed, and the hanger device temporarily connected for the movement of the bolt fastening device 100 is separated from the hanger ring.

12 illustrates a state in which the bolt fastening device 10 is installed on the swing bearing 20 through the above-described process.

After the bolt fastening device 10 is installed on the swing bearing 20 by the position setting unit 100, the linear movement driver 330 and the torque fastening unit 400 of the linear movement unit 300 are next. By operating the elevating driver 431 of the horizontal direction and the vertical direction of the torque application tool 420 to the appropriate position to be inserted into the fastening bolt (B) coupled to the swing bearing (20) The bolt socket 422 of the torque application tool 420 is positioned.

When the bolt socket 422 is positioned at the fastening position in this way, as illustrated in FIGS. 13 and 14, the tool lifting member 430 is raised by the lifting driver 431 to bolt the bolt socket 422 to the fastening bolt B. After inserting), the nutrunner 421 of the torque application tool 420 is operated to fasten the fastening bolt B to the prescribed set torque.

Then, when the tightening of the torque is completed, the tool lifting member 430 is lowered to detach the bolt socket 422 downward from the fastening bolt B in which the tightening of torque is completed.

Then, the torque fastening unit 400 is pushed to the side in order to continuously torque the fastening bolts B in the next order along the circumference of the swing bearing 20.

Then, the horizontal rotation unit 200 connected to the torque fastening unit 400 through the linear movement unit 300 rotates in the horizontal direction about the central axis 111 coincided with the center of the swing bearing 20. While the torque tightening unit 400 is accurately moved along the circumference of the swing bearing 20, the bolt socket 422 of the torque applying tool 420 is to the fastening bolt (B) of the following sequence To the insertable position.

 When the bolt socket 422 of the torque applying tool 420 is positioned at the fastening position in the next order through the horizontal rotation of the horizontal rotating unit 200, the same torque fastening operation as described above may be performed and the horizontal rotation may be performed. By repeating the rotation and torque tightening process until the unit 200 is rotated 360 ° it is to conveniently torque all of the fastening bolt (B) coupled to the swing bearing (20).

When the torque tightening operation for all the fastening bolts B is completed through the above process, the linear torque driver 330 and the elevating driver 431 are operated to swing the torque fastening unit 400 after the work is completed. After spaced apart from), the fixed installation state by releasing the fixed support state by moving the support rack 120 of the position setting unit 100 in the reverse position while connecting the hanger to the hanger ring.

On the other hand, as described above, since the bolt fastening device 10 is positioned by the four pairs of support racks 120 moving forward and backward, it is installed on the swing bearing 20 so that only the forward movement distance of the support racks 120 is changed. In addition, regardless of the size of the swing bearing 20, it is possible to install the same bolt fastening device 10 in the swing bearing 20 of various sizes.

In addition, since the horizontal distance between the torque fastening unit 400 and the center of the swing bearing 20 can be adjusted by the linear movement unit 300, the linear movement of the linear movement unit 300 also applies to the swing bearing 20 of various sizes. The bolt socket 422 of the torque application tool 420 is set equally to the position where the movable driver 330 and the lifting driver 431 of the torque fastening unit 400 can be properly operated to be inserted into the fastening bolt B. It can be placed.

In addition, the interval between the fastening bolts (B) is different as the size of the swing bearing 20 is changed, correspondingly applied a pair of torque by operating the space adjusting actuator 441 of the torque fastening unit 400 correspondingly. By adjusting the pitch between the tools 420 to match the spacing between the fastening bolts (B) it is possible to proceed with the same torque tightening operation.

As described above, the bolt fastening device according to the present invention is a very convenient and prescribed setting because it can proceed the torque tightening operation while rotating along the circumference of the swing bearing in the state of exactly matching the center of rotation of the swing bearing All the fastening bolts can be fastened precisely by torque, and the position of the torque application tool can be properly adjusted according to the size of the swing bearing through the configuration of the position setting unit, the linear moving unit, the tool lifting member, and the tool gap adjusting member. It can be seen that the torque tightening operation can be performed by installing the swing bearings of various heavy equipment models.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the technical scope of the invention is not limited to the disclosed exemplary embodiments and drawings, It will be understood that the modified equivalent structure is not limited to the scope of the present invention.

The main parts of the accompanying drawings are as follows.
100: positioning unit 110: base frame
111: center axis 120: support rack
121: rack close end 130: rack driver
140: rack interlocking rotary plate 141: track groove
142: rack guider 200: horizontal rotation unit
210: horizontal rotating frame 220: wheel member
230: weight part 300: linear moving unit
310: linear movement guide 311: locking projection
320: straight moving bar 321: slit groove
330: linear drive driver 400: torque tightening unit
410: fixed frame 420: torque application tool
421: nutrunner 422: bolt socket
430: lifting member 431: lifting actuator
440: tool gap adjusting member 441: gap adjusting actuator

Claims (11)

Position setting unit for setting the position so that the central axis is matched with the center of the swing bearing while seated on the upper portion of the swing bearing;
A horizontal rotating unit installed above the position setting unit to horizontally rotate in a circumferential direction of a swing bearing about the central axis;
A linear movement unit installed on the upper portion of the horizontal rotating unit to enable linear movement in the radial direction of the swing bearing; And
Installed in the linear movement unit is adjusted the distance to the center of the swing bearing, the torque tightening unit for tightening the fastening bolt of the swing bearing with a set torque while being moved along the circumference of the swing bearing in conjunction with the rotation of the horizontal rotating unit Heavy duty swing bearing bolted fastening apparatus including; The method of claim 1,
The position setting unit,
A base frame having the central axis at a center thereof;
Four pairs of support racks fixed to the swing bearing in close contact with the swing bearing while advancing in all directions from the lower side of the base frame; And
And four pairs of rack drivers providing forward and backward movement force to the four pairs of support racks, respectively. The method of claim 2,
The position setting unit,
It is coupled to the central axis rotatably from the lower side of the base frame, the rack interlocking rotary plate to constrain the four pairs of support racks to move the same as the movement of the four pairs of support racks; Bolt fastening device for heavy duty swing bearings. The method of claim 3, wherein
Four pairs of streamlined track grooves are radially formed around the central axis of the rack interlocking rotary plate, and four pairs of rack guiders coupled to the four pairs of support racks are movable along the track grooves in the track grooves. Bolt fastening device of heavy duty swing bearing, characterized in that the installation. The method of claim 1,
The horizontal rotating unit,
A horizontal rotating frame rotatably coupled to the central axis at an upper side of the position setting unit; And
And a plurality of wheel members installed at a lower portion of the horizontal rotating frame to support the horizontal rotating frame, and having a circular motion about a central axis when the horizontal rotating frame is rotated. 2. 6. The method of claim 5,
The horizontal rotating unit,
And a weight part installed on the horizontal rotating frame on the opposite side to which the linear moving unit is installed so that the central axis becomes the center of gravity of the horizontal rotating unit. 2. The method of claim 1,
The linear movement unit,
A linear movement guide installed in the horizontal rotation unit in the radial direction of the swing bearing;
A linear movement bar which is moved back and forth along the linear movement guide, and the torque fastening unit is installed at one end thereof;
And a linear moving driver for providing forward and backward moving force to the linear moving bar. 8. The method of claim 7,
Slit groove of a predetermined length is formed in the linear moving bar, the bolt fastening device of the heavy-duty swing bearing, characterized in that the linear guide is formed so that the locking projection protrudes through the slit groove. The method of claim 1,
The torque tightening unit,
A fixed frame fixed to the linear moving unit;
A torque applying tool for fastening by applying a set torque to the fastening bolt of the swing bearing;
And a tool lifting member for adjusting the vertical position of the torque application tool while being lifted by the lift driver installed in the fixed frame. The method of claim 9,
The torque application tool is provided in a pair, the bolt coupling device of the heavy-duty swing bearing, characterized in that the distance between the pair of torque application tool is adjusted. The method of claim 10,
The torque tightening unit,
And a tool spacing control member which is moved back and forth to the side of the tool elevating member by a gap adjusting driver installed at the tool elevating member.
The torque application tool of one side of the pair of torque application tool is fixedly supported on the tool lifting member and the other torque application tool is fixed to the tool interval adjusting member characterized in that the bolt fastening device of the swing bearing.

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