A kind of soldering cramping apparatus
Technical field
The present invention relates to chuck apparatus technical field, in particular to a kind of soldering cramping apparatus.
Background technique
On Automobile Welding assembly line, because clamping is completed on welding fixture, so fixture is in entire welding process
In play an important role.Traditional clamp structure fixes automobile longitudinal girder in clamping process, through positioning pin, then passes through hand
Handle compresses, and compresses stringer by upper lower lock block, this mode is unfavorable for welding, and positioning accuracy is also inadequate.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of soldering cramping apparatus, with overcome it is above-mentioned it is in the prior art not
Foot.
The technical solution that the present invention solves above-mentioned technical problem is as follows:A kind of soldering cramping apparatus, including pedestal and fixation are set
Leading portion positioning fixture, left section of positioning fixture, right middle section positioning fixture, back segment positioning fixture and control cabinet on pedestal are set,
Leading portion positioning fixture, left section of positioning fixture, right middle section positioning fixture, back segment positioning fixture are electrically connected with control cabinet.
The beneficial effects of the invention are as follows:Compared to handle compress mode, by the left of the leading portion of components, interlude,
On the right side of interlude and corresponding fixture is respectively set in back segment, positions relatively reliable;And it welds more convenient.
Further:Leading portion positioning fixture includes the first fixing seat and the first clamping element, and the first fixing seat is fixed on pedestal,
And it is located at the leading portion of components A;First clamping element includes the first cylinder, the first linking arm, the first cursor, first movement clamping plate
With the first strap, the first strap is fixed in the first fixing seat, and is pushed against on the bottom wall of the leading portion of components A;
First cylinder is fixed in the first fixing seat;One end of first linking arm and the output shaft of the first cylinder are hinged, the first linking arm
The other end be fixed with first movement clamping plate;First movement clamping plate is pushed against on the roof of the leading portion of components A, and with it is first solid
Clamp plate is corresponding;One end of first cursor and the first fixing seat are hinged, the other end of the first cursor and the first linking arm
Middle part it is hinged;First cylinder is electrically connected with control cabinet.
The beneficial effect of above-mentioned further scheme is:First cylinder operation, one end of the first linking arm is in the first cylinder
It is moved up under the drive of output shaft, the other end of the first linking arm moves down under the traction of the first cursor at this time, to drive first
Mobile clamping plate moves down, and pushes against on the roof of the leading portion of components A, with push against on the bottom wall of the leading portion of components A
First strap collective effect realizes the clamping of the leading portion of components A.
Further:Left section of positioning fixture includes the second fixing seat, first movement frame and the second clamping element, the second fixing seat
It is fixed on pedestal, and at the components B in the left side of the interlude of components A;First movement frame includes Mobile base and
Two cylinders, the second cylinder are fixed on pedestal, are fixed with Mobile base on the output shaft of the second cylinder;Second fixing seat, which is equipped with, to be slided
Rail, Mobile base are equipped with the sliding block to match with sliding rail, and slide block set is set on sliding rail;Second clamping element is fixed on Mobile base,
Second clamping element includes the first fixed plate, the first locating piece and the first positioning pin, and the first fixed plate is fixed on Mobile base, and position
In the bottom of components B;First locating piece is fixed in the first fixed plate, and the first locating piece is pushed against on the bottom wall of components B;
First positioning pin is fixed in the first fixed plate, and the first positioning pin is inserted in the first positioning hole of components B;Second cylinder with
Control cabinet electrical connection.
The beneficial effect of above-mentioned further scheme is:The output shaft of second cylinder operation, the second cylinder moves up, and Mobile base exists
It is steadily moved up under the restriction of sliding block and sliding rail, so that the first locating piece is pushed against on the bottom wall of components B, the first positioning pin is plugged
In in the first positioning hole of components B.
Further:Left section of positioning fixture further includes third clamping element, and third clamping element includes the second fixed plate, third gas
Cylinder, the second linking arm, the second cursor, the second mobile clamping plate and the second strap, the second fixed plate are fixed on Mobile base,
And the bottom of the components C positioned at the left side of the interlude of components A;Second strap is fixed in the second fixed plate, and
It pushes against on the bottom wall of components C;Third cylinder is fixed in the second fixed plate;One end of second linking arm and third cylinder
Output shaft is hinged, and the other end of the second linking arm is fixed with the second mobile clamping plate;Second mobile clamping plate is pushed against in the top of components C
On wall, and it is corresponding with the second strap;One end of second cursor and the second fixed plate are hinged, the second cursor it is another
It holds hinged with the middle part of the second linking arm;Third cylinder is electrically connected with control cabinet.
The beneficial effect of above-mentioned further scheme is:Third cylinder operation, one end of the second linking arm is in third cylinder
It is moved up under the drive of output shaft, the other end of the second linking arm moves down under the traction of the second cursor at this time, to drive second
Mobile clamping plate moves down, and pushes against on the roof of components C, with push against in the second strap on the bottom wall of components C
Collective effect realizes the clamping of components C.
Further:Right middle section positioning fixture includes third fixing seat and the 4th clamping element, and third fixing seat is fixed on pedestal
On, and the right side of the interlude positioned at components A;4th clamping element includes the 5th cylinder, the second positioning pin and third locating piece,
5th cylinder is fixed in third fixing seat, and the second positioning pin is fixed on the output shaft of the 5th cylinder, and the second positioning pin plugs
In in the second location hole of the interlude of components A;Third locating piece is fixed in third fixing seat, and is pushed against in components A
Interlude right wall on;5th cylinder is electrically connected with control cabinet.
The beneficial effect of above-mentioned further scheme is:5th cylinder operation, the output shaft and the second positioning pin of the 5th cylinder
It is mobile, the second positioning pin can be made to be inserted in the second location hole of the interlude of components A, realize the interlude of components A
Positioning.
Further:Right middle section positioning fixture further includes the 5th clamping element, and the 5th clamping element includes the 6th cylinder, third connection
Arm, third cursor, the 7th cylinder and third positioning pin, the 6th cylinder are fixed in third fixing seat;The one of third linking arm
End is hinged with the output shaft of the 6th cylinder, and the other end of third linking arm is fixed with the 7th cylinder;One end of third cursor with
Third fixing seat is hinged, and the middle part of the other end and third linking arm of third cursor is hinged;Third positioning pin is fixed on the 7th
On the output shaft of cylinder, and the left side of the components D positioned at the upside of the interlude of components A, and it is inserted in the of components D
Three positioning holes;6th cylinder and the 7th cylinder are electrically connected with control cabinet.
The beneficial effect of above-mentioned further scheme is:6th cylinder operation, one end of third linking arm is in the 6th cylinder
It is moved up under the drive of output shaft, the other end of third linking arm moves down under the traction of third cursor at this time, to drive the 7th
Cylinder moves down, positioned at the top of components D;7th cylinder operation at this time, the output shaft and third positioning pin of the 7th cylinder are mobile,
Third positioning pin can be made to be inserted in its third positioning hole on the left of components D;It realizes the positioning of components D, clamp.
Further:Back segment positioning fixture includes the 4th fixing seat and the 6th clamping element, and the 4th fixing seat is fixed on pedestal,
And it is located at the back segment of components A;6th clamping element includes third fixed plate, the 8th cylinder and the 4th locating piece, third fixed plate
It is fixed in the 4th fixing seat;8th cylinder is fixed in third fixed plate, and it is fixed that the 4th is fixed on the output shaft of the 8th cylinder
Position block, the 4th locating piece are pushed against in the right wall of components D;8th cylinder is electrically connected with control cabinet.
The beneficial effect of above-mentioned further scheme is:8th cylinder operation, the output shaft and the 4th locating piece of the 8th cylinder
It is mobile, the 4th locating piece can be made to push against in the right wall of components D, to be inserted in its third location hole on the left of components D
Interior third positioning pin collective effect realizes clamping, the positioning of components D.
Further:Back segment positioning fixture further includes the 7th clamping element, and the 7th clamping element includes the 9th cylinder, the 4th connection
Arm, the 4th cursor, the 5th locating piece and the 6th locating piece, the 9th cylinder are fixed in the 4th fixing seat;4th linking arm
One end and the output shaft of the 9th cylinder are hinged, and the other end of the 4th linking arm is fixed with the 5th locating piece and the 6th locating piece;The
Five locating pieces are pushed against on the roof of components A;6th locating piece is pushed against on the roof of components B, and with the first locating piece
It is corresponding;9th cylinder is electrically connected with control cabinet.
The beneficial effect of above-mentioned further scheme is:9th cylinder operation, one end of the 4th linking arm is in the 9th cylinder
It is moved up under the drive of output shaft, the other end of the 4th linking arm moves down under the traction of the 4th cursor at this time, to drive the 5th
Locating piece and the 6th locating piece move down, and push against the 5th locating piece on the roof of components A;Push against the 6th locating piece in zero
On the roof of part B, in the first locating piece collective effect on the bottom wall of components B, to realize the folder of components B with abutting
Tightly.
Detailed description of the invention
Fig. 1 is a kind of overall structure diagram of soldering cramping apparatus of the present invention;
Fig. 2 is the structural schematic diagram of components folded by a kind of soldering cramping apparatus of the present invention;
Fig. 3 is the attachment structure schematic diagram of leading portion positioning fixture and components in a kind of soldering cramping apparatus of the present invention;
Fig. 4 is the structural schematic diagram of leading portion positioning fixture in a kind of soldering cramping apparatus of the present invention;
Fig. 5 is the attachment structure schematic diagram of left section of positioning fixture and components in a kind of soldering cramping apparatus of the present invention;
Fig. 6 is the structural schematic diagram of left section of positioning fixture in a kind of soldering cramping apparatus of the present invention;
Fig. 7 is that the connection structure in an orientation of right middle section positioning fixture and components in a kind of soldering cramping apparatus of the present invention is shown
It is intended to;
Fig. 8 is the structural schematic diagram of right middle section positioning fixture in a kind of soldering cramping apparatus of the present invention;
Fig. 9 is that the connection structure in another orientation of right middle section positioning fixture and components in a kind of soldering cramping apparatus of the present invention is shown
It is intended to;
Figure 10 is that the connection structure in an orientation of a kind of soldering cramping apparatus posterior segment positioning fixture and components of the invention is shown
It is intended to;
Figure 11 is a kind of structural schematic diagram of soldering cramping apparatus posterior segment of the invention positioning fixture;
Figure 12 is that the connection structure in another orientation of a kind of soldering cramping apparatus posterior segment positioning fixture and components of the invention is shown
It is intended to.
In figure:1 it is pedestal, 2 be leading portion positioning fixture, 21 be the first fixing seat, 22 be the first clamping element, 221 is first
Cylinder, 222 be the first linking arm, 223 be the first cursor, 224 be first movement clamping plate, 225 be the first strap, 3 be
Left section of positioning fixture, 31 be the second fixing seat, 311 be limit plate, 32 be first movement frame, 321 be Mobile base, 322 be the
Two cylinders, 33 be the second clamping element, 331 be the first fixed plate, 332 be the first locating piece, 333 be the first positioning pin, 334 be the
Four cylinders, 335 be the second locating piece, 34 be third clamping element, 341 be the second fixed plate, 342 be third cylinder, 343 be second
Linking arm, 344 be the second cursor, 345 be the second mobile clamping plate, 346 be the second strap, 4 be right middle section positioning fixture,
41 be third fixing seat, 42 be the 4th clamping element, 421 be the 5th cylinder, 422 be the second positioning pin, 423 be third locating piece,
43 for the 5th clamping element, 431 be the 6th cylinder, 432 be third linking arm, 433 be third cursor, 434 be the 7th cylinder,
435 be third positioning pin, 436 be the 8th locating piece, 5 be back segment positioning fixture, 51 be the 4th fixing seat, 511 be the 7th positioning
Block, 52 for the 6th clamping element 521 be third fixed plate, 522 be the 8th cylinder, 523 be the 4th locating piece, 53 be the 7th clamp
Part, 531 for the 9th cylinder, 532 be the 4th linking arm, 533 be the 4th cursor, 534 be the 5th locating piece, 54 be the 8th clamp
Part, 541 be the tenth cylinder, 542 be the 4th positioning pin, 6 be control cabinet, 71 be components A, 711 be second location hole, 712 be
4th location hole, 72 be components B, 721 be first positioning hole, 73 be components C, 74 be components D, 741 be third positioning
Hole, 8 are tool box.
Specific embodiment
The principle and features of the present invention will be described below with reference to the accompanying drawings, and the given examples are served only to explain the present invention, and
It is non-to be used to limit the scope of the invention.
As depicted in figs. 1 and 2, a kind of soldering cramping apparatus is positioned including pedestal 1 and the leading portion being fixed on pedestal 1
Fixture 2, left section of positioning fixture 3, right middle section positioning fixture 4, back segment positioning fixture 5 and control cabinet 6, leading portion positioning fixture 2, a left side
Middle section positioning fixture 3, right middle section positioning fixture 4, back segment positioning fixture 5 are electrically connected with control cabinet 6.Compared to handle pressing square
Formula, by the way that on the left of the leading portion of components, interlude, on the right side of interlude and back segment is respectively set corresponding fixture, positioning is more
Add reliable;And it welds more convenient.
As shown in Figure 3 and Figure 4, leading portion positioning fixture 2 includes the first fixing seat 21 and the first clamping element 22, the first fixing seat
21 are fixed on pedestal 1, and are located at the leading portion of components A71;First clamping element 22 includes the first cylinder 221, the first linking arm
222, the first cursor 223, first movement clamping plate 224 and the first strap 225, the first strap 225 are fixed on first
In fixing seat 21, and push against on the bottom wall of the leading portion of components A71;First cylinder 221 is fixed in the first fixing seat 21;The
One end of one linking arm 222 and the output shaft of the first cylinder 221 are hinged, and the other end of the first linking arm 222 is fixed with the first shifting
Dynamic clamping plate 224;First movement clamping plate 224 is pushed against on the roof of the leading portion of components A71, and with 225 phase of the first strap
It is corresponding;One end of first cursor 223 and the first fixing seat 21 are hinged, the other end and the first linking arm of the first cursor 223
222 middle part is hinged;First cylinder 221 is electrically connected with control cabinet 6.The operating of first cylinder 221, one end of the first linking arm 222
It is moved up under the drive of the output shaft of the first cylinder 221, the other end of the first linking arm 222 is in the first cursor 223 at this time
Move down under traction, to drive first movement clamping plate 224 to move down, and push against on the roof of the leading portion of components A71, with abutting
In 225 collective effect of the first strap on the bottom wall of the leading portion of components A71, the clamping of the leading portion of components A71 is realized.
As shown in Figure 5 and Figure 6, left section of positioning fixture 3 includes the second fixing seat 31, first movement frame 32 and the second clamping
Part 33, the second fixing seat 31 are fixed on pedestal 1, and at the components B72 in the left side of the interlude of components A71;The
One movable stand 32 includes Mobile base 321 and the second cylinder 322, and the second cylinder 322 is fixed on pedestal 1, the second cylinder 322 it is defeated
Mobile base 321 is fixed on shaft;Second fixing seat 31 is equipped with sliding rail, and Mobile base 321 is equipped with the cunning to match with sliding rail
Block, slide block set are set on sliding rail;Second clamping element 33 is fixed on Mobile base 321, and the second clamping element 33 includes the first fixed plate
331, the first locating piece 332 and the first positioning pin 333, the first fixed plate 331 are fixed on Mobile base 321, and are located at components
The bottom of B72;First locating piece 332 is fixed in the first fixed plate 331, and the first locating piece 332 is pushed against in the bottom of components B72
On wall;First positioning pin 333 is fixed in the first fixed plate 331, and it is first fixed to be inserted in components B72 for the first positioning pin 333
In the hole 721 of position;Second cylinder 322 is electrically connected with control cabinet 6.The operating of second cylinder 322, the output shaft of the second cylinder 322 move up,
Mobile base 321 steadily moves up under the restriction of sliding block and sliding rail, so that the first locating piece 332 is pushed against in the bottom wall of components B72
On, the first positioning pin 333 is inserted in the first positioning hole 721 of components B72.
As shown in Figure 5 and Figure 6, the second fixing seat 31 is equipped with limit plate 311, and limit plate 311 is set to the second fixing seat
31 top.The stroke that moves up of Mobile base 321 can be defined, so that Mobile base 321 is moved up top and contradict to limit plate 311
When, the first locating piece 332 is just pushed against on the bottom wall of components B72, and the first positioning pin 333 is inserted in components at this time
In the first positioning hole 721 of B72.
As shown in Figure 5 and Figure 6, left section of positioning fixture 3 further includes third clamping element 34, and third clamping element 34 includes second
The mobile clamping plate 345 of fixed plate 341, third cylinder 342, the second linking arm 343, the second cursor 344, second and the second fixing clamp
Plate 346, the second fixed plate 341 are fixed on Mobile base 321, and the components C73 positioned at the left side of the interlude of components A71
Bottom;Second strap 346 is fixed in the second fixed plate 341, and is pushed against on the bottom wall of components C73;Third gas
Cylinder 342 is fixed in the second fixed plate 341;One end of second linking arm 343 and the output shaft of third cylinder 342 are hinged, and second
The other end of linking arm 343 is fixed with the second mobile clamping plate 345;Second mobile clamping plate 345 is pushed against in the roof of components C73
On, and it is corresponding with the second strap 346;One end of second cursor 344 and the second fixed plate 341 are hinged, the second rotation
The other end of arm 344 and the middle part of the second linking arm 343 are hinged;Third cylinder 342 is electrically connected with control cabinet 6.Third cylinder 342
Operating, one end of the second linking arm 343 moves up under the drive of the output shaft of third cylinder 342, at this time the second linking arm 343
The other end moves down under the traction of the second cursor 344, to drive the second mobile clamping plate 345 to move down, and pushes against in components C73
Roof on, with push against in 346 collective effect of the second strap on the bottom wall of components C73, realize components C73's
It clamps.
As shown in Figure 5 and Figure 6, the second clamping element 33 further includes the 4th cylinder 334 and the second locating piece 335, the 4th cylinder
334 are fixed in the first fixed plate 331, and the second locating piece 335, the second locating piece are fixed on the output shaft of the 4th cylinder 334
335 push against on the rear wall of components C73;4th cylinder 334 is electrically connected with control cabinet 6.The operating of 4th cylinder 334, the 4th gas
The output shaft of cylinder 334 and the second locating piece 335 are mobile, and the second locating piece 335 can be made to push against on the rear wall of components C73;Into
Clamping, the positioning of the realization components C73 of one step.
As shown in Figure 7 to 9, right middle section positioning fixture 4 includes that third fixing seat 41 and the 4th clamping element 42, third are fixed
Seat 41 is fixed on pedestal 1, and the right side of the interlude positioned at components A71;4th clamping element 42 include the 5th cylinder 421,
Second positioning pin 422 and third locating piece 423, the 5th cylinder 421 are fixed in third fixing seat 41, the 5th cylinder 421 it is defeated
The second positioning pin 422 is fixed on shaft, the second positioning pin 422 is inserted in the second location hole 711 of the interlude of components A71
It is interior;Third locating piece 423 is fixed in third fixing seat 41, and is pushed against in the right wall of the interlude of components A71;5th gas
Cylinder 421 is electrically connected with control cabinet 6.The operating of 5th cylinder 421, the output shaft of the 5th cylinder 421 and the second positioning pin 422 are mobile,
The second positioning pin 422 can be made to be inserted in the second location hole 711 of the interlude of components A71, realize the centre of components A71
The positioning of section.
As shown in Figure 7 to 9, right middle section positioning fixture 4 further includes the 5th clamping element 43, and the 5th clamping element 43 includes the 6th
Cylinder 431, third linking arm 432, third cursor 433, the 7th cylinder 434 and third positioning pin 435, the 6th cylinder 431 are solid
Due in third fixing seat 41;One end of third linking arm 432 and the output shaft of the 6th cylinder 431 are hinged, third linking arm 432
The other end be fixed with the 7th cylinder 434;One end of third cursor 433 and third fixing seat 41 are hinged, third cursor 433
The other end and third linking arm 432 middle part it is hinged;Third positioning pin 435 is fixed on the output shaft of the 7th cylinder 434, and
Positioned at the left side of the components D74 of the upside of the interlude of components A71, and it is inserted in the third location hole 741 of components D74
It is interior;6th cylinder 431 and the 7th cylinder 434 are electrically connected with control cabinet 6.The operating of 6th cylinder 431, third linking arm 432
One end moves up under the drive of the output shaft of the 6th cylinder 431, and the other end of third linking arm 432 is in third cursor at this time
It is moved down under 433 traction, to drive the 7th cylinder 434 to move down, positioned at the top of components D74;The 7th cylinder 434 is transported at this time
Turn, the output shaft and third positioning pin 435 of the 7th cylinder 434 are mobile, and third positioning pin 435 can be made from the left side of components D74
It is inserted in its third location hole 741;It realizes the positioning of components D74, clamp.
As shown in Figure 7 to 9, the 5th clamping element 43 further includes the 8th locating piece 436, and the 8th locating piece 436 is fixed on
It on the output shaft of seven cylinders 434, and pushes against on the roof of components D74, to further realize positioning, the folder of components D74
Tightly.
As shown in Figure 10 to Figure 12, back segment positioning fixture 5 includes the 4th fixing seat 51 and the 6th clamping element 52, and the 4th is fixed
Seat 51 is fixed on pedestal 1, and is located at the back segment of components A71;6th clamping element 52 includes third fixed plate 521, the 8th gas
Cylinder 522 and the 4th locating piece 523, third fixed plate 521 are fixed in the 4th fixing seat 51;8th cylinder 522 is fixed on third
In fixed plate 521, the 4th locating piece 523 is fixed on the output shaft of the 8th cylinder 522, the 4th locating piece 523 is pushed against in zero
In the right wall of part D74;8th cylinder 522 is electrically connected with control cabinet 6.The operating of 8th cylinder 522, the output shaft of the 8th cylinder 522
It is mobile with the 4th locating piece 523, the 4th locating piece 523 can be made to push against in the right wall of components D74, with from components D74
Left side is inserted in 435 collective effect of third positioning pin in its third location hole 741, realizes clamping, the positioning of components D74.
As shown in Figure 10 to Figure 12, back segment positioning fixture 5 further includes the 7th clamping element 53, and the 7th clamping element 53 includes the 9th
Cylinder 531, the 4th linking arm 532, the 4th cursor 533, the 5th locating piece 534 and the 6th locating piece 535, the 9th cylinder 531
It is fixed in the 4th fixing seat 51;One end of 4th linking arm 532 and the output shaft of the 9th cylinder 531 are hinged, the 4th linking arm
532 other end is fixed with the 5th locating piece 534 and the 6th locating piece 535;5th locating piece 534 is pushed against in components A71's
On roof;6th locating piece 535 is pushed against on the roof of components B72, and corresponding with the first locating piece 332;9th cylinder
531 are electrically connected with control cabinet 6.9th cylinder 531 operating, the output shaft of one end of the 4th linking arm 532 in the 9th cylinder 531
It is moved up under drive, the other end of the 4th linking arm 532 moves down under the traction of the 4th cursor 533 at this time, to drive the 5th to determine
Position block 534 and the 6th locating piece 535 move down, and push against the 5th locating piece 534 on the roof of components A71;Make the 6th positioning
Block 535 is pushed against on the roof of components B72, to make jointly in the first locating piece 332 on the bottom wall of components B72 with pushing against
With the clamping of realization components B72.
As shown in figure 12, back segment positioning fixture 5 further includes the 8th clamping element 54, and the 8th clamping element 54 includes the tenth cylinder
541 and the 4th positioning pin 542, the tenth cylinder 541 be fixed in the 4th fixing seat 51, it is fixed on the output shaft of the tenth cylinder 541
There is the 4th positioning pin 542, the 4th positioning pin 542 is located at the back segment of components A71, and is inserted in the 4th positioning of components A71
In hole 712;Tenth cylinder 541 is electrically connected with control cabinet 6.The operating of tenth cylinder 541, the output shaft and the 4th of the tenth cylinder 541
Positioning pin 542 is mobile, and the 4th positioning pin 542 can be made to be inserted in the 4th location hole 712 of the back segment of components A71;Realize zero
The positioning of the back segment of components A 71.
As shown in Figure 10 to Figure 12, the 4th fixing seat 51 be equipped with the 7th locating piece 511, the 7th locating piece 511 push against in
On the bottom wall of the back segment of components A71, with common in the 5th locating piece 534 on the roof of the back segment of components A71 with abutting
The clamping of the back segment of components A71 is realized in effect.
As shown in Figure 1, soldering cramping apparatus further includes tool box 8, tool box 8 is fixed on pedestal 1.It can be used for storing Welder
Tool, facilitates operator to obtain.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.