CN213105304U

CN213105304U - Positioning device for welding bottom plate and side plate of fan shell

Info

Publication number: CN213105304U
Application number: CN202021759327.4U
Authority: CN
Inventors: 江岩
Original assignee: Luoyang Fuhaihe Precision Machinery Co ltd
Current assignee: Luoyang Fuhaihe Precision Machinery Co ltd
Priority date: 2020-08-21
Filing date: 2020-08-21
Publication date: 2021-05-04
Anticipated expiration: 2030-08-21

Abstract

A positioning device for welding a bottom plate and a side plate of a fan shell relates to the technical field of workpiece welding, wherein a positioning mechanism is arranged in the middle of the bottom plate, a side plate position adjusting mechanism and two side plate fixing mechanisms are arranged on the positioning mechanism, and the side plate position adjusting mechanism is positioned between the two side plate fixing mechanisms; a bottom plate of fan casing and positioner for curb plate welding, fix fan casing's bottom plate and positioner for the curb plate welding on the bottom plate through positioning mechanism, according to the difference of bottom plate radian, adjust the radian of slide rail through curb plate fixed establishment, make the edge of slide rail laminating bottom plate, fix the position of needs welded curb plate through curb plate fixed establishment, inject the position of curb plate through curb plate stop gear, finely tune the radian of curb plate through curb plate position adjustment mechanism, make things convenient for the staff to weld, improve work efficiency.

Description

Positioning device for welding bottom plate and side plate of fan shell

[ technical field ] A method for producing a semiconductor device

The utility model belongs to the technical field of the work piece welding technique and specifically relates to a positioner is used in bottom plate and curb plate welding of fan casing is related to.

[ background of the invention ]

The fan is a machinery that converts wind energy into mechanical energy, because the fan size is great, the casing of fan generally is on welding a plurality of curb plates to the bottom plate, thereby form the fan casing, the curb plate is piled up for a long time in the transportation and can takes place the deformation, in welding process, the staff need finely tune the part radian of curb plate, just can weld, in work in the past, the staff all is through the both sides welding iron plate at curb plate mounted position, beat into the iron plate between curb plate and iron plate, adjust the radian of curb plate through the iron plate, waste time and energy, influence the job schedule.

[ Utility model ] content

In order to overcome not enough among the background art, the utility model discloses a bottom plate of fan casing and positioner for curb plate welding, the utility model discloses a curb plate fixing mechanism fixes the curb plate on the bottom plate, adjusts the radian of curb plate through curb plate position adjustment mechanism, makes things convenient for the staff to weld the curb plate on the bottom plate, improves work efficiency.

In order to realize the utility model aims at, the utility model adopts the following technical scheme:

the utility model provides a bottom plate and curb plate welding of fan casing are with positioner, includes the bottom plate, positioning mechanism is installed to the intermediate position of bottom plate, last curb plate position adjustment mechanism and two curb plate fixed establishment of installing of positioning mechanism, curb plate position adjustment mechanism is located between two curb plate fixed establishment, is equipped with the slide rail between two curb plate fixed establishment, be equipped with curb plate stop gear on the slide rail, last switch group of installing of positioning mechanism, switch group's input and external power source's output are connected, switch group's output is connected with curb plate position adjustment mechanism and curb plate fixed establishment's input electricity.

Positioning mechanism includes first C type fixed plate, the quantity of first C type fixed plate is four, and is separated by 90 between four first C type fixed plates, first C type fixed plate is located the bottom plate and contacts each other, threaded connection has first fastening bolt on the first C type fixed plate, first C type fixed plate is passed to first fastening bolt's one end and is connected with first cushion, first cushion is located first C type fixed plate, one side of first C type fixed plate is through first telescopic link and locating piece connection, the intermediate position of locating piece is equipped with the recess, be connected with the bracing piece through the bearing in the recess, it is connected with curb plate position adjustment mechanism to rotate on the bracing piece, the top fixedly connected with connecting plate of bracing piece, the both sides of connecting plate lower surface rotate respectively and are connected with curb plate fixed establishment.

Curb plate fixed establishment includes the second telescopic link, the stiff end of second telescopic link is located positioning mechanism and rotates the connection, the flexible end and the fixed block fixed connection of second telescopic link, fixedly connected with third telescopic link on the fixed block, the external fixed surface of third telescopic link stiff end is connected with the installation piece, be equipped with the thread groove on the installation piece, thread groove female connection has first screw rod, be equipped with the mounting groove on the installation piece, the position of mounting groove and the corresponding and intercommunication in thread groove position, the mounting groove internal rotation is connected with first synchronizing wheel, be equipped with the spread groove on the first synchronizing wheel, the position of spread groove and the corresponding and threaded connection in position of first screw rod, fixedly connected with first motor on the installation piece, first motor passes through the motor shaft and is connected with first motor synchronizing wheel, the position of first motor synchronizing wheel is corresponding and links through first synchronous belt with the position of first synchronizing wheel The telescopic end of the third telescopic rod is fixedly connected with a limiting block, a side plate mounting groove is formed in the limiting block, a second fastening bolt is connected to the limiting block in a threaded manner, one end of the second fastening bolt penetrates through the limiting block to be connected with a second cushion block, the second cushion block is positioned in the side plate mounting groove, a square groove is formed in the limiting block, two fourth telescopic rods and two springs are fixedly connected to the upper groove surface of the square groove, the positions of the fourth telescopic rods correspond to the positions of the springs and are sleeved with the springs, a fixed plate is fixedly connected to the telescopic ends of the fourth telescopic rods and the springs, a pulling rod is fixedly connected to the middle position of the fixed plate, the top end of the pulling rod penetrates through the limiting block, the top end of the pulling rod is positioned outside the limiting block, a placing groove is formed in the limiting block, a sliding rail is connected to the placing, the limiting block is provided with a bottom plate clamping groove, the position of the bottom plate clamping groove corresponds to that of the side plate mounting groove and is communicated with the side plate mounting groove, the position of the bottom plate clamping groove corresponds to that of the bottom plate and is in contact with the bottom plate, a third fastening bolt is connected to the bottom end of the limiting block in a threaded mode, one end of the third fastening bolt penetrates through the limiting block to be connected with a third cushion block, and the third cushion block is located in the bottom plate clamping groove.

The side plate position adjusting mechanism comprises a rotating block which is positioned on the positioning mechanism and is rotationally connected with the positioning mechanism, a fifth telescopic rod is fixedly connected on the rotating block, the telescopic end of the fifth telescopic rod is fixedly connected with the sliding block, the sliding block is provided with a motor mounting groove, a second motor is fixedly connected in the motor mounting groove, the second motor is connected with a second motor synchronous wheel through an output shaft, a circular groove is arranged on the sliding block, the circular groove is positioned at the lower side of the motor mounting groove, the internal thread of the circular groove is connected with a second screw rod, one side of the sliding block is rotatably connected with a second synchronous wheel, the position of the second synchronous wheel corresponds to the position of the second screw rod and is in threaded connection, the position of the second synchronous wheel corresponds to the position of the second motor synchronous wheel and is connected with the second motor synchronous wheel through a falling synchronous belt, and one end of the second screw rod is connected with the pushing block.

Curb plate stop gear's quantity is one or more, curb plate stop gear includes second C type fixed plate, second C type fixed plate is located the slide rail and sliding connection, the one end and the bottom plate in second C type fixed plate C type groove contact each other, threaded connection has fourth fastening bolt on the second C type fixed plate, second C type fixed plate is passed to fourth fastening bolt's one end, and fourth fastening bolt's one end is located second C type fixed plate.

Be equipped with the draw-in groove of equidistance on the slide rail, the position of draw-in groove is corresponding and the joint with the position of curb plate fixed establishment joint end, the slide rail is elastic steel plate.

Since the technical scheme is used, the utility model discloses following beneficial effect has:

a bottom plate of fan casing and positioner for curb plate welding, fix fan casing's bottom plate and positioner for the curb plate welding on the bottom plate through positioning mechanism, according to the difference of bottom plate radian, adjust the radian of slide rail through curb plate fixed establishment, make the edge of slide rail laminating bottom plate, fix the position of needs welded curb plate through curb plate fixed establishment, inject the position of curb plate through curb plate stop gear, finely tune the radian of curb plate through curb plate position adjustment mechanism, make things convenient for the staff to weld, improve work efficiency.

[ description of the drawings ]

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic structural view of the positioning mechanism of the present invention;

FIG. 3 is a schematic structural view of a side plate fixing mechanism of the present invention;

FIG. 4 is a cross-sectional view of the side plate fixing mechanism of the present invention;

FIG. 5 is a schematic structural view of a side plate position adjusting mechanism and a side plate limiting mechanism of the present invention;

1. a base plate; 2. a positioning mechanism; 201. a first C-shaped fixing plate; 202. positioning blocks; 203. a bearing; 204. a first telescopic rod; 205. a first fastening bolt; 206. a support bar; 207. a connecting plate; 208. a first cushion block; 3. a side plate fixing mechanism; 301. a second telescopic rod; 302. a fixed block; 303. a third telescopic rod; 304. a first screw; 305. a first synchronization belt; 306. mounting blocks; 307. a second fastening bolt; 308. a second cushion block; 309. a limiting block; 310. pulling a rod; 311. a first motor; 312. a first motor synchronizing wheel; 313. a first synchronizing wheel; 314. a third cushion block; 315. a third fastening bolt; 316. a fixing plate; 317. a fourth telescopic rod; 318. a spring; 4. a side plate position adjusting mechanism; 401. a fifth telescopic rod; 402. a second screw; 403. a second synchronizing wheel; 404. a second synchronous belt; 405. a second motor; 406. a pushing block; 407. a slider; 408. a second motor synchronizing wheel; 409. rotating the block; 5. a side plate limiting mechanism; 501. a second C-shaped fixing plate; 502. a fourth fastening bolt; 6. a slide rail; 7. and a power switch group.

[ detailed description ] embodiments

The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.

The positioning device for welding the bottom plate and the side plate of the fan shell, which is described in conjunction with the attached drawings 1-5, comprises a bottom plate 1, a positioning mechanism 2 is installed at the middle position of the bottom plate 1, the positioning device for welding the bottom plate and the side plate of the fan shell is fixed on the bottom plate 1 through the positioning mechanism 2, a side plate position adjusting mechanism 4 and two side plate fixing mechanisms 3 are installed on the positioning mechanism 2, the side plate position adjusting mechanism 4 is positioned between the two side plate fixing mechanisms 3, the side plate is fixed on the bottom plate 1 through the side plate fixing mechanisms 3, the radian of the side plate is adjusted through the side plate position adjusting mechanism 4, a slide rail 6 is arranged between the two side plate fixing mechanisms 3, the radian of the slide rail 6 is adjusted through the side plate fixing mechanisms 3, a side plate limiting mechanism 5 is arranged on the slide rail 6, and a power switch, the input end of the power switch group 7 is connected with the output end of an external power supply, the output end of the power switch group 7 is electrically connected with the input ends of the side plate position adjusting mechanism 4 and the side plate fixing mechanism 3, and the power switch group 7 is provided with switch buttons which are in one-to-one correspondence with the side plate position adjusting mechanism 4 and the side plate fixing mechanism 3.

The positioning mechanism 2 comprises a first C-shaped fixing plate 201, the number of the first C-shaped fixing plate 201 is four, and the four first C-shaped fixing plates 201 are separated by 90 degrees, the first C-shaped fixing plates 201 are positioned on the base plate 1 and are in contact with each other, a first fastening bolt 205 is connected to the first C-shaped fixing plate 201 through a screw, one end of the first fastening bolt 205 passes through the first C-shaped fixing plate 201 and is connected to a first cushion block 208, the first cushion block 208 is positioned in the first C-shaped fixing plate 201, one side of the first C-shaped fixing plate 201 is connected with the positioning block 202 through the first telescopic rod 204, a groove is arranged at the middle position of the positioning block 202, the groove is connected with a supporting rod 206 through a bearing 203, the utility model discloses a bracing piece 206, including bracing piece 206, rotation is connected with curb plate position adjustment mechanism 4 on the bracing piece 206, the top fixedly connected with connecting plate 207 of bracing piece 206, the both sides of connecting plate 207 lower surface rotate respectively and are connected with curb plate fixed establishment 3.

The side plate fixing mechanism 3 comprises a second telescopic rod 301, the fixed end of the second telescopic rod 301 is positioned on the positioning mechanism 2 and is rotatably connected, the telescopic end of the second telescopic rod 301 is fixedly connected with a fixed block 302, the fixed block 302 is fixedly connected with a third telescopic rod 303, the outer surface of the fixed end of the third telescopic rod 303 is fixedly connected with an installation block 306, the installation block 306 is provided with a thread groove, the thread groove is internally connected with a first screw 304, the installation block 306 is provided with an installation groove, the position of the installation groove corresponds to and is communicated with the position of the thread groove, the installation groove is rotatably connected with a first synchronizing wheel 313, the first synchronizing wheel 313 is provided with a connection groove, the position of the connection groove corresponds to and is in threaded connection with the position of the first screw 304, the installation block 306 is fixedly connected with a first motor 311, and the first motor 311 is connected with the first motor synchronizing wheel 312 through a, the position of the first motor synchronizing wheel 312 corresponds to the position of the first synchronizing wheel 313 and is connected with the first synchronizing belt 305 through the first synchronizing belt 305, the telescopic end of the third telescopic rod 303 is fixedly connected with a limit block 309, a side plate installation groove is formed in the limit block 309, a second fastening bolt 307 is connected with the limit block 309 through a thread, one end of the second fastening bolt 307 passes through the limit block 309 to be connected with a second cushion block 308, the second cushion block 308 is positioned in the side plate installation groove, a square groove is formed in the limit block 309, two fourth telescopic rods 317 and two springs 318 are fixedly connected with the upper groove surface of the square groove, the position of the fourth telescopic rods 317 corresponds to the position of the springs 318 and are sleeved, a fixed plate 316 is fixedly connected with the telescopic ends of the fourth telescopic rods 317 and the springs 318, a pulling rod 310 is fixedly connected with the middle position of the fixed plate 316, and the top end of the, and the top of pulling pole 310 is located outside stopper 309, be equipped with the arrangement groove on stopper 309, sliding connection has slide rail 6 in the arrangement groove, stopper 309 and the 6 joint of slide rail are passed to the bottom of pulling pole 310, be equipped with bottom plate joint groove on stopper 309, the position of bottom plate joint groove is corresponding and the intercommunication with the position of curb plate mounting groove, the position of bottom plate joint groove is corresponding and the mutual contact with the position of bottom plate 1, the bottom threaded connection of stopper 309 has third fastening bolt 315, the one end of third fastening bolt 315 is passed stopper 309 and is connected with third cushion 314, third cushion 314 is located bottom plate joint inslot.

The side plate position adjusting mechanism 4 comprises a rotating block 409, the rotating block 409 is positioned on the positioning mechanism 2 and is connected in a rotating manner, a fifth telescopic rod 401 is fixedly connected to the rotating block 409, the telescopic end of the fifth telescopic rod 401 is fixedly connected with a sliding block 407, a motor installation groove is formed in the sliding block 407, a second motor 405 is fixedly connected in the motor installation groove, the second motor 405 is connected with a second motor synchronous wheel 408 through an output shaft, a circular groove is formed in the sliding block 407 and positioned on the lower side of the motor installation groove, a second screw 402 is connected in the circular groove in a threaded manner, a second synchronous wheel 403 is rotatably connected to one side of the sliding block 407, the position of the second synchronous wheel 403 corresponds to the position of the second screw 402 and is connected in a threaded manner, the position of the second synchronous wheel 403 corresponds to the position of the second motor synchronous wheel 408 and is connected through a falling synchronous belt 404, one end of the second screw 402 is connected with a pushing block 406.

The quantity of curb plate stop gear 5 is one or more, curb plate stop gear 5 includes second C type fixed plate 501, second C type fixed plate 501 is located slide rail 6 and sliding connection, the one end and the bottom plate 1 of second C type fixed plate 501C type groove contact each other, threaded connection has fourth fastening bolt 502 on the second C type fixed plate 501, second C type fixed plate 501 is passed to the one end of fourth fastening bolt 502, and the one end of fourth fastening bolt 502 is located second C type fixed plate 501.

Be equipped with the draw-in groove of equidistance on the slide rail 6, the position of draw-in groove is corresponding and the joint with the position of 3 joint ends of curb plate fixed establishment, slide rail 6 is elastic steel plate.

Embodiment 1, in the positioning device for welding the bottom plate and the side plate of the fan casing, when in use, a worker fixes the positioning mechanism 2 on the bottom plate 1, drives the first C-shaped fixing plate 201 to move through the first telescopic rod 204, so that the first C-shaped fixing plate 201 is clamped on the bottom plate 1, drives the first cushion block 208 to move through the first fastening bolt 205, fixes the first C-shaped fixing plate 201 on the bottom plate 1 through the first cushion block 208, drives the slide rail 6 to move through the side plate fixing mechanism 3, so that the middle part of the slide rail 6 is located at the edge of the bottom plate 1, drives the side plate limiting mechanism 5 to the edge of the bottom plate 1 through the slide rail 6, fixes the second C-shaped fixing plate 501 on the bottom plate 1 through the fourth fastening bolt 502, fixes the middle part of the slide rail 6 on the side plate, and adjusts the radian of the slide rail 6 through the side plate fixing mechanism 3 according to the radian of the bottom plate 1, the first motor 311 drives the first screw 304 to move through the first motor synchronizing wheel 312, the first synchronizing wheel 313 and the first synchronizing belt 305, the first screw 304 drives the limiting block 309 to move, the limiting block 309 drives the two ends of the slide rail 6 to move, so that the slide rail 6 is attached to the edge of the bottom plate 1, the bottom plate clamping groove on the limiting block 309 is clamped with the bottom plate 1, the limiting block 309 is fixed on the bottom plate 1 through the third fastening bolt 315 and the third cushion block 314, a worker places a side plate to be welded into a side plate mounting groove on the limiting block 309, the side plate is fixed in the side plate mounting groove through the second fastening bolt 307 and the second cushion block 308, the fixed side plate is positioned on one side of the side plate limiting mechanism 5, the position of the side plate is limited through the side plate limiting mechanism 5, when the radian of the side plate needs to be adjusted, the worker rotates the side plate position adjusting mechanism 4, rotate curb plate position adjustment mechanism 4 to the adjustment position, second motor 405 passes through second motor synchronizing wheel 408, second synchronizing wheel 403 and second hold-in range 404 drive second screw rod 402 and remove, it removes to drive promotion piece 406 through second screw rod 402, promote the curb plate through promoting piece 406, adjust the radian of curb plate, the curb plate welding finishes the back, when needing to change the position, the staff rotates bracing piece 206 through bearing 203, it installs curb plate fixed establishment 3 and curb plate position adjustment mechanism 4 and rotates to drive through bracing piece 206.

The invention is not described in detail in the prior art, and although the invention has been specifically shown and described in connection with the preferred embodiments, the method and the way of implementing the technical solution are numerous, and only the preferred embodiments of the invention have been described above, it should be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims, which are within the scope of the invention.

Claims

1. The utility model provides a bottom plate and curb plate welding of fan casing are with positioner, includes bottom plate (1), characterized by: positioning mechanism (2) are installed to the intermediate position of bottom plate (1), install curb plate position adjustment mechanism (4) and two curb plate fixed establishment (3) on positioning mechanism (2), curb plate position adjustment mechanism (4) are located between two curb plate fixed establishment (3), are equipped with slide rail (6) between two curb plate fixed establishment (3), be equipped with curb plate stop gear (5) on slide rail (6), install switch group (7) on positioning mechanism (2), the input of switch group (7) is connected with external power source's output, the output of switch group (7) is connected with the input electricity of curb plate position adjustment mechanism (4) and curb plate fixed establishment (3).

2. The positioning device for welding the bottom plate and the side plate of the fan casing according to claim 1, wherein: the positioning mechanism (2) comprises four first C-shaped fixing plates (201), the number of the first C-shaped fixing plates (201) is four, the four first C-shaped fixing plates (201) are separated by 90 degrees, the first C-shaped fixing plates (201) are positioned on the bottom plate (1) and are in contact with each other, first fastening bolts (205) are connected to the first C-shaped fixing plates (201) in a threaded manner, one ends of the first fastening bolts (205) penetrate through the first C-shaped fixing plates (201) to be connected with first cushion blocks (208), the first cushion blocks (208) are positioned in the first C-shaped fixing plates (201), one sides of the first C-shaped fixing plates (201) are connected with the positioning blocks (202) through first telescopic rods (204), grooves are formed in the middle positions of the positioning blocks (202), the grooves are connected with supporting rods (206) through bearings (203), and side plate position adjusting mechanisms (4) are rotatably connected to the supporting rods (206), the top end of the supporting rod (206) is fixedly connected with a connecting plate (207), and two sides of the lower surface of the connecting plate (207) are respectively and rotatably connected with a side plate fixing mechanism (3).

3. The positioning device for welding the bottom plate and the side plate of the fan casing according to claim 1, wherein: the side plate fixing mechanism (3) comprises a second telescopic rod (301), the fixed end of the second telescopic rod (301) is located on the positioning mechanism (2) and is connected in a rotating mode, the telescopic end of the second telescopic rod (301) is fixedly connected with the fixed block (302), a third telescopic rod (303) is fixedly connected onto the fixed block (302), the outer surface of the fixed end of the third telescopic rod (303) is fixedly connected with an installation block (306), a thread groove is formed in the installation block (306), a first screw rod (304) is connected with the thread groove in a threaded mode, an installation groove is formed in the installation block (306), the position of the installation groove corresponds to the position of the thread groove and is communicated with the position of the thread groove, a first synchronous wheel (313) is rotationally connected into the installation groove, a connection groove is formed in the first synchronous wheel (313), and the position of the connection groove corresponds to the position of the first screw, the mounting block (306) is fixedly connected with a first motor (311), the first motor (311) is connected with a first motor synchronous wheel (312) through a motor shaft, the position of the first motor synchronous wheel (312) corresponds to the position of a first synchronous wheel (313) and is connected with the first synchronous wheel (305) through a first synchronous belt (305), the telescopic end of a third telescopic rod (303) is fixedly connected with a limiting block (309), a side plate mounting groove is formed in the limiting block (309), a second fastening bolt (307) is in threaded connection with the limiting block (309), one end of the second fastening bolt (307) penetrates through the limiting block (309) to be connected with a second cushion block (308), the second cushion block (308) is located in the side plate mounting groove, a square groove is formed in the limiting block (309), and the upper groove surface of the square groove is fixedly connected with two fourth telescopic rods (317) and two springs (318), the position of the fourth telescopic rod (317) corresponds to the position of the spring (318) and is sleeved, the telescopic ends of the fourth telescopic rod (317) and the spring (318) are fixedly connected with a fixing plate (316), the middle position of the fixing plate (316) is fixedly connected with a pulling rod (310), the top end of the pulling rod (310) penetrates through a limiting block (309), the top end of the pulling rod (310) is located outside the limiting block (309), a placing groove is formed in the limiting block (309), a sliding rail (6) is connected in the placing groove in a sliding manner, the bottom end of the pulling rod (310) penetrates through the limiting block (309) and is connected with the sliding rail (6) in a clamping manner, a bottom plate clamping groove is formed in the limiting block (309), the position of the bottom plate clamping groove corresponds to the position of the side plate mounting groove and is communicated with the position of the side plate mounting groove, the position, the bottom end of the limiting block (309) is in threaded connection with a third fastening bolt (315), one end of the third fastening bolt (315) penetrates through the limiting block (309) to be connected with a third cushion block (314), and the third cushion block (314) is located in a bottom plate clamping groove.

4. The positioning device for welding the bottom plate and the side plate of the fan casing according to claim 1, wherein: the side plate position adjusting mechanism (4) comprises a rotating block (409), the rotating block (409) is positioned on the positioning mechanism (2) and is in rotating connection, a fifth telescopic rod (401) is fixedly connected to the rotating block (409), the telescopic end of the fifth telescopic rod (401) is fixedly connected with a sliding block (407), a motor mounting groove is formed in the sliding block (407), a second motor (405) is fixedly connected in the motor mounting groove, the second motor (405) is connected with a second motor synchronizing wheel (408) through an output shaft, a circular groove is formed in the sliding block (407), the circular groove is positioned on the lower side of the motor mounting groove, a second screw rod (402) is in threaded connection with the circular groove, a second synchronizing wheel (403) is rotatably connected to one side of the sliding block (407), and the position of the second synchronizing wheel (403) corresponds to the position of the second screw rod (402) and is in threaded connection with the position of the second screw rod, the position of the second synchronous wheel (403) corresponds to the position of a second motor synchronous wheel (408) and is connected through a drop-in synchronous belt (404), and one end of the second screw rod (402) is connected with a pushing block (406).

5. The positioning device for welding the bottom plate and the side plate of the fan casing according to claim 1, wherein: the quantity of curb plate stop gear (5) is one or more, curb plate stop gear (5) include second C type fixed plate (501), second C type fixed plate (501) are located slide rail (6) and sliding connection, the one end and bottom plate (1) of second C type fixed plate (501) C type groove contact each other, threaded connection has fourth fastening bolt (502) on second C type fixed plate (501), second C type fixed plate (501) are passed to the one end of fourth fastening bolt (502), and the one end of fourth fastening bolt (502) is located second C type fixed plate (501).

6. The positioning device for welding the bottom plate and the side plate of the fan casing according to claim 1, wherein: be equipped with the draw-in groove of equidistance on slide rail (6), the position of draw-in groove is corresponding and the joint with the position of curb plate fixed establishment (3) joint end, slide rail (6) are elastic steel plate.