Welding and positioning device for draught fan shell of silage maize harvester

Abstract

The utility model belongs to the technical field of agricultural machinery welding auxiliary equipment, and particularly relates to a silage maize harvester fan shell welding and positioning device which comprises a base plate, and a side shell plate positioning assembly, an arc-shaped shell plate positioning and clamping assembly, a bearing seat positioning assembly and a reinforcing piece positioning assembly are arranged on the base plate. The two sets of side shell plate positioning assemblies, the two sets of arc-shaped shell plate positioning and clamping assemblies and the two sets of bearing seat positioning assemblies are symmetrically arranged on the base plate. The outer clamping mechanism is used for clamping the outer side of an arc-shaped shell plate of a fan shell. And the reinforcer positioning assembly is used for positioning a reinforcer arranged at the bottom of the fan shell. According to the utility model, the side shell plate, the arc-shaped shell plate, the bearing seat plate and the reinforcer are respectively positioned by the cushion block and locked by the magnet or the positioning pin, so that the welded parts of the fan shell are accurately positioned, and the problem of poor welding quality caused by inaccurate positioning in the welding process is avoided.

Description

Technical Field

[0001] This utility model relates to a welding positioning device for the casing of a silage harvester fan, belonging to the technical field of agricultural machinery welding auxiliary equipment. Background Technology

[0002] A silage harvester is a highly efficient machine for harvesting and chopping crop stalks, grass, and other materials to produce silage-suitable feed. Its closed operation is environmentally friendly and healthy, requiring no additives, improving feed utilization, reducing breeding costs, and promoting the resource utilization of agricultural waste. It is an important tool in modern animal husbandry. The blower is a crucial component of the silage harvester, located at the front of the nozzle, used to blow the chopped forage. The blower casing is another part of the machine, typically consisting of a left shell plate, a right shell plate, and an arc-shaped shell plate between them. Bearing seats are located on both the left and right shell plates for mounting and supporting bearings, and corresponding arc-shaped notches are also present on the left and right shell plates. Existing welding fixtures for blower casings are mostly simple, making it difficult to accurately position the various components of the blower casing during welding. This affects the welding strength and dimensional accuracy of the blower casing, resulting in poor welding quality. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing a welding positioning device for the casing of a silage harvester fan.

[0004] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A welding positioning device for a silage harvester fan casing includes a base plate, on which a side shell plate positioning assembly, an arc-shaped shell plate positioning clamping assembly, a bearing seat positioning assembly, and a reinforcing member positioning assembly are provided; two sets of the side shell plate positioning assembly, the arc-shaped shell plate positioning clamping assembly, and the bearing seat positioning assembly are symmetrically provided on the base plate respectively; the side shell plate positioning assembly includes a side positioning upright plate, which is movably mounted on the base plate; the side positioning upright plate is provided with a notched positioning plate and a plurality of side plate positioning pads; a magnet is provided on each side plate positioning pad; the arc-shaped shell plate positioning clamping assembly includes a positioning gantry and an external clamping mechanism; the... A positioning gantry is mounted on the base plate. The top of the positioning gantry is an arc surface, and side positioning plates are provided on both sides of the positioning gantry. The external clamping mechanism is used to clamp the outer side of the arc-shaped shell plate of the fan housing. The bearing seat positioning assembly includes a seat sliding support plate, a mounting stand is provided on the seat sliding support plate, a seat bottom positioning plate and a seat end positioning plate are provided on the mounting stand, a seat bottom positioning pin is provided on the seat bottom positioning plate, a plurality of seat end positioning pins are provided on the seat end positioning plate, a magnet is provided on the seat end positioning plate, and a plate clamping mechanism is provided on both sides of the mounting stand. The plate clamping mechanism is used to clamp the connecting plate on the bearing seat of the fan housing. The reinforcing member positioning assembly is used to position the reinforcing member located at the bottom of the fan housing.

[0005] Furthermore, the side shell plate positioning assembly also includes a side sliding support plate and a side positioning cylinder. The side positioning upright plate is mounted on the side sliding support plate. The side sliding support plate is mounted on the base plate via a slide rail and a slider. The side positioning cylinder is mounted on the base plate, and the piston rod end of the side positioning cylinder is hinged to the side sliding support plate.

[0006] Furthermore, a first limiting block is provided on the substrate corresponding to the side sliding support plate; an adjustment reference block and a side plate positioning pad are provided on the side positioning plate.

[0007] Furthermore, the bearing housing positioning assembly also includes a housing positioning cylinder, which is mounted on the base plate, and the piston rod end of the housing positioning cylinder is hinged to the housing sliding support plate; the plate clamping mechanism includes a fixed base plate and a pressing base plate hinged to the fixed base plate via a quick clamping clamp, and pressing pads are respectively provided on the opposite surfaces of the fixed base plate and the pressing base plate.

[0008] Furthermore, the seat end positioning plate is provided with one or two according to the end face shape of the fan housing bearing seat, and at least one of the seat end positioning plates is provided with a seat end positioning pin; the seat bottom positioning plate is provided with a seat bottom positioning cylinder, and the piston rod end of the seat bottom positioning cylinder is connected to the seat bottom positioning pin; the fixed seat plate is provided with a seat connecting plate positioning cylinder, and the piston rod end of the seat connecting plate positioning cylinder is connected to the seat connecting plate positioning pin.

[0009] Furthermore, the external clamping mechanism includes a first clamping arc plate, a second clamping arc plate, and a clamper. One end of the first clamping arc plate is mounted on the side positioning plate, and the other end of the first clamping arc plate is hinged to the second clamping arc plate. The end of the second clamping arc plate is provided with a clamping positioning plate. The clamper is mounted on the base plate through an external clamping mounting seat, and the end of the clamper is provided with a clamping bolt.

[0010] Furthermore, the reinforcing member positioning assembly includes a sliding plate and an external positioning cylinder. The sliding plate is movably mounted on the base plate. The piston rod end of the external positioning cylinder is hinged to the sliding plate. The sliding plate is symmetrically provided with reinforcing member positioning mechanisms. The reinforcing member positioning mechanisms are provided with positioning uprights and positioning flat plates. The positioning flat plates are provided with magnets.

[0011] Furthermore, the reinforcing member positioning mechanism includes a reinforcing positioning seat, the positioning upright plate and the positioning flat plate are disposed on the reinforcing positioning seat, the positioning upright plate includes a positioning surface, the positioning surface is used to position the reinforcing member, the positioning upright plate is provided with a reinforcing positioning pad and a reinforcing positioning pin; the reinforcing positioning seat is provided with a quick clamp and a positioning pin.

[0012] Furthermore, the base plate is provided with clamping components corresponding to the seat sliding plate and the slide plate, respectively. The clamping components are used to limit and clamp the movement of the side sliding plate, the seat sliding plate and the slide plate.

[0013] Furthermore, the clamping assembly includes a clamping mounting base and a clamping hinge base. The clamping mounting base is mounted on the base plate, and the clamping hinge base is mounted on the clamping mounting base. A clamping arm is hinged on the clamping hinge base. A clamping bolt is provided at the end of the clamping arm. The middle part of the clamping bolt is connected to the clamping arm. A clamping block is provided at one end of the clamping bolt, and a clamping handle is provided at the other end of the clamping bolt.

[0014] The beneficial effects of this utility model are as follows: This utility model achieves accurate positioning of each welded component of the fan housing by using pads for positioning and magnets or positioning pins for locking the side shell plates, arc-shaped shell plates, bearing seat plates, and reinforcing members, thus avoiding welding quality problems caused by inaccurate positioning during the welding process. This utility model uses conformal positioning and clamping for the arc-shaped shell plates of the fan housing, improving the positioning and welding stability of the arc-shaped shell plates. This utility model uses sliding trays or slide plates for positioning and clamping, facilitating the handling of components. This utility model employs pneumatic positioning and clamping, improving efficiency and further facilitating the handling of components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is the front view of the present invention;

[0017] Figure 3 A schematic diagram of the overall structure of the side shell plate positioning assembly;

[0018] Figure 4 Front view of the side shell positioning assembly;

[0019] Figure 5 Side view of the side shell positioning assembly;

[0020] Figure 6 A schematic diagram of another embodiment of the side shell plate positioning assembly;

[0021] Figure 7 This is a schematic diagram of the overall structure of the positioning gantry;

[0022] Figure 8 This is a schematic diagram of the overall structure of the external clamping mechanism;

[0023] Figure 9 This is the front view of the external clamping mechanism;

[0024] Figure 10 A schematic diagram of the overall structure of the bearing housing positioning assembly;

[0025] Figure 11 This is a structural schematic diagram of the base positioning plate;

[0026] Figure 12 A schematic diagram of the structure for installing the support;

[0027] Figure 13 A schematic diagram of the overall structure of the reinforcing component positioning assembly;

[0028] Figure 14 A schematic diagram of the overall structure of the reinforcing component positioning mechanism;

[0029] Figure 15 Top view of the reinforcing member positioning assembly;

[0030] Figure 16 This is a schematic diagram of the overall structure of the clamping assembly;

[0031] Figure 17 This is a schematic diagram of the overall structure of this utility model from another angle;

[0032] Figure 18 This is a schematic diagram of the fan casing positioning process according to an embodiment of the present invention.

[0033] The reference numerals in the attached drawings are as follows: 100, base plate; 101, slide rail one; 102, slider one; 103, first limiting block; 104, slide rail two; 105, slider two; 200, side shell plate positioning assembly; 201, side positioning upright plate; 202, notched positioning plate; 203, side plate positioning pad one; 204, side sliding support plate; 205, side positioning cylinder; 206, hinge plate; 207, Y-type connector one; 208, adjusting reference block; 209, side plate. Positioning pad 2; 210, triangular reinforcing plate; 300, arc-shaped shell plate positioning and clamping assembly; 301, positioning gantry; 302, side positioning plate; 303, first clamping arc plate; 304, second clamping arc plate; 305, external clamping mounting base; 306, clamping device; 307, clamping bolt; 308, clamping positioning plate; 400, bearing seat positioning assembly; 401, seat sliding support plate; 402, seat bottom positioning plate; 403, seat end positioning plate; 404, seat... 405. Bottom positioning pin; 406. Mounting stand; 407. Seat end positioning pin; 408. Seat bottom positioning cylinder; 409. Y-type connector two; 410. Seat positioning cylinder; 411. Hinge seat one; 412. Fixed seat plate; 413. Quick clamp one; 414. Seat plate clamping; 415. Clamping pad; 416. Seat connecting plate positioning cylinder; 500. Seat connecting plate positioning pin; 501. Reinforcing member positioning assembly; 502. Slide plate; 503. External positioning cylinder; 5 03. Hinge seat II; 504. Y-type connector III; 505. Positioning plate; 5051. Positioning surface; 506. Positioning plate; 507. Reinforced positioning seat; 508. Reinforced positioning pad; 509. Reinforced positioning pin; 510. Quick clamp II; 511. Positioning pin; 600. Tightening assembly; 601. Tightening mounting base; 602. Tightening hinge seat; 603. Tightening arm; 604. Tightening bolt; 605. Tightening block; 606. Tightening handle. Detailed Implementation

[0034] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0035] See Figures 1-18A welding and positioning device for the casing of a silage harvester fan includes a base plate 100. The base plate 100 is provided with a side shell plate positioning assembly 200, an arc-shaped shell plate positioning clamping assembly 300, a bearing seat positioning assembly 400, and a reinforcing member positioning assembly 500. Two sets of each of the side shell plate positioning assembly 200, the arc-shaped shell plate positioning clamping assembly 300, and the bearing seat positioning assembly 400 are symmetrically arranged on the base plate 100. The side shell plate positioning assembly 200 includes a side positioning upright plate 201, which is movably mounted on the base plate 100. The side positioning upright plate 201 is provided with a notched positioning plate 202 and multiple side plate positioning pads 203, each side plate positioning pad 203 having a magnet. The arc-shaped shell plate positioning and clamping assembly 300 includes a positioning gantry 301 and an external clamping mechanism. The positioning gantry 301 is mounted on the base plate 100. The top of the positioning gantry 301 is an arc surface, and side positioning plates 302 are provided on both sides of the positioning gantry 301 (see...). Figure 7 The external clamping mechanism is used to clamp the outer side of the arc-shaped shell plate of the fan housing; the bearing seat positioning assembly 400 includes a seat sliding support plate 401, a mounting stand 405 is provided on the seat sliding support plate 401, a seat bottom positioning plate 402 and a seat end positioning plate 403 are provided on the mounting stand 405, a seat bottom positioning pin 404 is provided on the seat bottom positioning plate 402, a plurality of seat end positioning pins 406 are provided on the seat end positioning plate 403, a magnet is provided on the seat end positioning plate 403, and plate clamping mechanisms are provided on both sides of the mounting stand 405 respectively, the plate clamping mechanisms are used to clamp the connecting plate on the bearing seat of the fan housing; the reinforcing member positioning assembly 500 is used to position the reinforcing member provided at the bottom of the fan housing.

[0036] See Figures 3-6 The side shell plate positioning assembly 200 further includes a side sliding support plate 204 and a side positioning cylinder 205. The side positioning upright plate 201 is mounted on the side sliding support plate 204. The side sliding support plate 204 is mounted on the base plate 100 via a slide rail 101 and a slider 102. The base plate 100 is provided with the slide rail 101, and the bottom of the side sliding support plate 204 is provided with a slider 102, which is slidably mounted on the slide rail 101. The side positioning cylinder 205... Mounted on the base plate 100, the piston rod end of the side positioning cylinder 205 is hinged to the side sliding support plate 204. Specifically, the bottom of the side sliding support plate 204 is provided with a hinge plate 206, and the piston rod end of the side positioning cylinder 205 is provided with a Y-type connector 207. The Y-type connector 207 is connected to the hinge plate 206 by a pin. This utility model does not specifically limit the installation position of the side positioning cylinder 205 and its hinge position with the side sliding support plate 204. See [reference needed]. Figure 3 and Figure 6In this embodiment, the side positioning cylinder 205 can be installed below or above the side sliding support plate 204. Its hinge position with the side sliding support plate 204 can be above or below the side sliding support plate 204.

[0037] The base plate 100 is provided with a first limiting block 103 corresponding to the side sliding support plate 204, which is used to limit the sliding stroke of the side sliding support plate 204; the side positioning plate 201 is provided with an adjustment reference block 208 and a side plate positioning pad 209, the positioning surface of the side plate positioning pad 209 is an inclined surface, which is used to provide positioning for the inclined surface on the side shell plate of the fan housing; in order to improve the strength of the side positioning plate 201, a triangular reinforcing plate 210 is provided on the side positioning plate 201.

[0038] See Figures 10-12 The bearing seat positioning assembly 400 further includes a seat positioning cylinder 409, which is mounted on the base plate 100. The piston rod end of the seat positioning cylinder 409 is hinged to the seat sliding support plate 401. Specifically, the seat sliding support plate 401 is provided with a hinge seat 410, and the piston rod end of the seat positioning cylinder 409 is provided with a Y-type connector 408. The Y-type connector 408 is connected to the hinge seat 410 by a pin. The plate clamping mechanism includes a fixed seat plate 411 and a pressing seat plate 413 hinged to the fixed seat plate 411 by a quick clamp 412. The fixed seat plate 411 and the pressing seat plate 413 are respectively provided with pressing pads 414 on opposite surfaces. At least one side of the fixed seat plate 411 is provided with an arc-shaped shell plate end edge positioning pad.

[0039] The seat end positioning plate 403 is provided with one or two according to the end face shape of the fan housing bearing seat, and at least one seat end positioning plate 403 is provided with a seat end positioning pin 406; the seat bottom positioning plate 402 is provided with a seat bottom positioning cylinder 407, and the piston rod end of the seat bottom positioning cylinder 407 is connected to the seat bottom positioning pin 404; the fixed seat plate 411 is provided with a seat connecting plate positioning cylinder 415, and the piston rod end of the seat connecting plate positioning cylinder 415 is connected to the seat connecting plate positioning pin 416.

[0040] See Figures 8-9The external clamping mechanism includes a first clamping arc plate 303, a second clamping arc plate 304, and a clamping device 306. One end of the first clamping arc plate 303 is mounted on the side positioning plate 302, and the other end of the first clamping arc plate 303 is hinged to the second clamping arc plate 304. The end of the second clamping arc plate 304 is provided with a clamping positioning plate 308. The clamping device 306 is mounted on the base plate 100 through an external clamping mounting seat 305, and the end of the clamping device 306 is provided with a clamping bolt 307.

[0041] See Figures 12-15 The reinforcing member positioning assembly 500 includes a sliding plate 501 and an external positioning cylinder 502. The sliding plate 501 is movably mounted on the base plate 100. Specifically, the base plate 100 is provided with a second slide rail 104, and the bottom of the sliding plate 501 is provided with a second slider 105, which is slidably mounted on the second slide rail 104. The piston rod end of the external positioning cylinder 502 is hinged to the sliding plate 501. Specifically, the sliding plate 501 is provided with a second hinge seat 503, and the piston rod end of the external positioning cylinder 502 is provided with a third Y-type connector 504. The third Y-type connector 504 is connected to the second hinge seat 503 by a pin. The sliding plate 501 is symmetrically provided with reinforcing member positioning mechanisms. The reinforcing member positioning mechanisms are provided with a positioning upright plate 505 and a positioning flat plate 506, and the positioning flat plate 506 is provided with a magnet.

[0042] The reinforcing member positioning mechanism includes a reinforcing positioning seat 507, a positioning upright plate 505 and a positioning flat plate 506 disposed on the reinforcing positioning seat 507, the positioning upright plate 505 includes a positioning surface 5051, the positioning surface 5051 is used to position the reinforcing member, the positioning upright plate 505 is provided with a reinforcing positioning pad 508 and a reinforcing positioning pin 509; the reinforcing positioning seat 507 is provided with a quick clamp 510 and a positioning pin 511.

[0043] The base plate 100 is provided with clamping components 600 corresponding to the seat sliding support plate 401 and the slide plate 501, respectively. The clamping components 600 are used to limit and clamp the movement of the side sliding support plate 204, the seat sliding support plate 401 and the slide plate 501.

[0044] See Figure 16The clamping assembly 600 includes a clamping mounting base 601 and a clamping hinge base 602. The clamping mounting base 601 is mounted on the base plate 100, and the clamping hinge base 602 is mounted on the clamping mounting base 601. A clamping arm 603 is hinged on the clamping hinge base 602. A clamping bolt 604 is provided at the end of the clamping arm 603. The middle part of the clamping bolt 604 is connected to the clamping arm 603. A clamping block 605 is provided at one end of the clamping bolt 604, and a clamping handle 606 is provided at the other end of the clamping bolt 604.

[0045] The fan housing structure of this utility model includes two side shell plates, an arc-shaped shell plate connecting the two side shell plates, and a reinforcing member located below the outer side of the arc-shaped shell plate. Bearing seat plates are respectively connected to the outer side surfaces of the two side shell plates, and a connecting plate is provided on the top of the bearing seat plate.

[0046] See Figure 18 The operation process of this utility model is as follows:

[0047] First, operate the air circuit system to return the side sliding plate 204, seat sliding plate 401, slide plate 501, and retractable positioning pin to their initial state.

[0048] Then, the air circuit system is operated to drive the piston rod of the side positioning cylinder 205 of the side shell plate positioning assembly 200 to extend, thereby moving the side sliding support plate 204 with the side positioning upright plate 201 into place, and using the first limiting block 103 to limit the side sliding support plate 204.

[0049] The left and right side shells of the blower housing of the silage harvester are placed on this utility model. The side positioning plate 201 uses six positioning surfaces, including side plate positioning pad 1 203 and side plate positioning pad 209, to provide positioning for the side shells. The notched positioning plate 202 provides positioning for the cylindrical surface of the hole on the side shells. The side shells are then attracted by the magnet on the side plate positioning pad 1 203, thus completing the positioning and fixing of the side shells.

[0050] The arc-shaped shell plate of the blower housing of the silage harvester is placed on this utility model. The top arc surface of the positioning gantry 301 provides positioning for the inner arc surface (inner side) of the arc-shaped shell plate, and the side positioning plates 302 on both sides of the positioning gantry 301 provide positioning for the two side edges of the arc-shaped shell plate.

[0051] The bearing seat plate of the blower housing of the silage harvester is placed on this utility model. The bearing seat plate is positioned by the seat end positioning pin 406 on the seat end positioning plate 403 and the bottom surface of the bearing seat plate is positioned by the seat bottom positioning plate 402. The air circuit system is operated so that the piston rod of the seat bottom positioning cylinder 407 extends, driving the seat bottom positioning pin 404 to extend and insert into the hole on the bottom surface of the bearing seat plate for locking and positioning. The bearing seat plate is held in place by the magnet on the seat end positioning plate 403.

[0052] Place the connecting plate of the blower housing of the silage harvester onto this utility model, operate the air circuit system, drive the piston rod of the seat connecting plate positioning cylinder 415 to extend, drive the seat connecting plate positioning pin 416 to extend and insert into the hole of the connecting plate to provide positioning for the connecting plate, and then operate the quick clamp 412 to press down the pressing seat plate 413, which cooperates with the fixed seat plate 411 to clamp the connecting plate.

[0053] The reinforcing member of the blower housing of the silage harvester is placed on this utility model. The positioning plate 505 and the positioning plate 506 of the reinforcing member positioning mechanism are used to position the reinforcing member. The magnet on the positioning plate 506 is used to hold the reinforcing member. Then, the positioning pin 511 is inserted into the hole on the reinforcing member and then clamped by the quick clamp 510.

[0054] Operating the pneumatic system extends the piston rod of the seat positioning cylinder 409, causing the seat sliding support plate 401 to move into position along with the mounting base 405 and the positioned bearing seat plate and connecting plate. At this time, the bottom of the side shell plate is positioned by the seat bottom positioning plate 402, which supports the lower edge of the side shell plate. The end edge of the arc-shaped shell plate is positioned by the positioning pad on the fixed seat plate 411.

[0055] Operate the pneumatic system to extend the piston rod of the outer positioning cylinder 503 of the reinforcing member positioning assembly 500, which drives the slide plate 501 to move along the slide rail 104 with the positioned reinforcing member until the reinforcing member fits against the edge of the arc-shaped shell plate and the side shell plate. Then, rotate the first clamping arc plate 303 and the second clamping arc plate 304 to press them against the outer surface of the arc-shaped shell plate. Then, use the clamping bolt 307 at the end of the clamping device 306 to press the clamping positioning plate 308, thereby clamping the arc-shaped shell plate of the shell.

[0056] Operate the air circuit system to move the seat sliding plate 401 of the bearing seat positioning assembly 400 inward. The clamping block 605 of the clamping assembly 600 provides clamping action on the seat sliding plate 401 and the sliding plate 501, so that the positions of each welded part of the silage machine fan housing are positioned and locked. Then, weld each weld according to the product drawing requirements.

[0057] Operate the pneumatic system to drive all cylinders to retract, disengage all positioning and clamping mechanisms, and remove the welded forage harvester fan housing from this utility model. The welding operation of the forage harvester fan housing is now complete.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A welding and positioning device for the casing of a silage harvester fan, comprising a base plate (100), characterized in that, The substrate (100) is provided with a side shell plate positioning assembly (200), an arc-shaped shell plate positioning clamping assembly (300), a bearing seat positioning assembly (400), and a reinforcing member positioning assembly (500). Two sets of each of the side shell plate positioning assembly (200), the arc-shaped shell plate positioning clamping assembly (300), and the bearing seat positioning assembly (400) are symmetrically arranged on the substrate (100). The side shell plate positioning assembly (200) includes a side positioning plate (201), which is movably mounted on the substrate (100). The side positioning plate (201) has a notched positioning plate (202) and multiple side plate positioning pads (203), each with a magnet. The arc-shaped shell plate positioning clamping assembly (300) includes a positioning gantry (301) and an external clamping mechanism. The positioning gantry (301) is mounted on the substrate (100). The top of the positioning gantry (301) is an arc surface, and the two sides of the positioning gantry (301) are provided with side positioning plates (302); the external clamping mechanism is used to clamp the outer side of the arc-shaped shell plate of the fan housing; the bearing seat positioning assembly (400) includes a seat sliding support plate (401), the seat sliding support plate (401) is provided with a mounting stand (405), the mounting stand (405) is provided with a seat bottom positioning plate (402) and a seat end positioning plate (403), the seat bottom positioning plate (402) is provided with a seat bottom positioning pin (404), the seat end positioning plate (403) is provided with a plurality of seat end positioning pins (406), the seat end positioning plate (403) is provided with a magnet, the two sides of the mounting stand (405) are respectively provided with plate clamping mechanisms, the plate clamping mechanisms are used to clamp the connecting plate on the bearing seat of the fan housing; the reinforcing member positioning assembly (500) is used to position the reinforcing member provided at the bottom of the fan housing.

2. The welding positioning device for the silage harvester fan casing according to claim 1, characterized in that, The side shell plate positioning assembly (200) further includes a side sliding support plate (204) and a side positioning cylinder (205). The side positioning plate (201) is mounted on the side sliding support plate (204). The side sliding support plate (204) is mounted on the base plate (100) via a slide rail (101) and a slider (102). The side positioning cylinder (205) is mounted on the base plate (100). The piston rod end of the side positioning cylinder (205) is hinged to the side sliding support plate (204).

3. The welding positioning device for the silage harvester fan casing according to claim 2, characterized in that, The base plate (100) is provided with a first limiting block (103) corresponding to the side sliding support plate (204); the side positioning plate (201) is provided with an adjustment reference block (208) and a side plate positioning pad block two (209).

4. The welding positioning device for the silage harvester fan casing according to claim 1, characterized in that, The bearing housing positioning assembly (400) further includes a housing positioning cylinder (409), which is mounted on the base plate (100). The piston rod end of the housing positioning cylinder (409) is hinged to the housing sliding support plate (401). The plate clamping mechanism includes a fixed seat plate (411) and a pressing seat plate (413) hinged to the fixed seat plate (411) via a quick clamp (412). Pressing pads (414) are respectively provided on the opposite surfaces of the fixed seat plate (411) and the pressing seat plate (413).

5. The welding positioning device for the silage harvester fan casing according to claim 4, characterized in that, The seat end positioning plate (403) is provided with one or two according to the end face shape of the fan housing bearing seat, and at least one seat end positioning plate (403) is provided with a seat end positioning pin (406); the seat bottom positioning plate (402) is provided with a seat bottom positioning cylinder (407), and the piston rod end of the seat bottom positioning cylinder (407) is connected to the seat bottom positioning pin (404); the fixed seat plate (411) is provided with a seat connecting plate positioning cylinder (415), and the piston rod end of the seat connecting plate positioning cylinder (415) is connected to the seat connecting plate positioning pin (416).

6. The welding positioning device for the silage harvester fan casing according to claim 1, characterized in that, The external clamping mechanism includes a first clamping arc plate (303), a second clamping arc plate (304), and a clamping device (306). One end of the first clamping arc plate (303) is mounted on the side positioning plate (302), and the other end of the first clamping arc plate (303) is hinged to the second clamping arc plate (304). The end of the second clamping arc plate (304) is provided with a clamping positioning plate (308). The clamping device (306) is mounted on the base plate (100) through an external clamping mounting seat (305), and the end of the clamping device (306) is provided with a clamping bolt (307).

7. The welding positioning device for the silage harvester fan casing according to claim 2, characterized in that, The reinforcing member positioning assembly (500) includes a sliding plate (501) and an external positioning cylinder (502). The sliding plate (501) is movably mounted on the base plate (100). The piston rod end of the external positioning cylinder (502) is hinged to the sliding plate (501). The reinforcing member positioning mechanism is symmetrically provided on the sliding plate (501). The reinforcing member positioning mechanism is provided with a positioning upright plate (505) and a positioning plate (506). The positioning plate (506) is provided with a magnet.

8. The welding positioning device for the silage harvester fan casing according to claim 7, characterized in that, The reinforcing member positioning mechanism includes a reinforcing positioning seat (507), a positioning plate (505) and a positioning flat plate (506) are provided on the reinforcing positioning seat (507), the positioning plate (505) includes a positioning surface (5051), the positioning surface (5051) is used to position the reinforcing member, and the positioning plate (505) is provided with a reinforcing positioning pad (508) and a reinforcing positioning pin (509); the reinforcing positioning seat (507) is provided with a quick clamp (510) and a positioning pin (511).

9. The welding positioning device for the silage harvester fan casing according to claim 7, characterized in that, The base plate (100) is provided with a clamping component (600) corresponding to the seat sliding plate (401) and the slide plate (501). The clamping component (600) is used to limit and clamp the movement of the side sliding plate (204), the seat sliding plate (401) and the slide plate (501).

10. The welding positioning device for the silage harvester fan casing according to claim 9, characterized in that, The clamping assembly (600) includes a clamping mounting base (601) and a clamping hinge base (602). The clamping mounting base (601) is mounted on the base plate (100), and the clamping hinge base (602) is mounted on the clamping mounting base (601). A clamping arm (603) is hinged on the clamping hinge base (602). A clamping bolt (604) is provided at the end of the clamping arm (603). The middle part of the clamping bolt (604) is connected to the clamping arm (603). A clamping block (605) is provided at one end of the clamping bolt (604), and a clamping handle (606) is provided at the other end of the clamping bolt (604).

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