Machining tool clamp special for harvesting header main beam

Abstract

The utility model relates to a machining tool clamp special for a harvesting header main beam, and belongs to the technical field of harvesting header manufacturing. According to the technical scheme, a bottom supporting assembly (1) and a tool clamp assembly (2) are connected through a shaft sleeve (232) and a shaft (16), a harvesting header main beam is positioned in the tool clamp assembly, and four side faces of a bottom cross beam of the harvesting header main beam are machined; the tool clamp assembly can turn over on the bottom supporting assembly through the shaft sleeve and the shaft, and after the harvesting header main beam turns over along with the tool clamp assembly, one top face of a top vertical beam of the harvesting header main beam is machined. According to the special machining tool clamp, the tool clamp assembly of the special machining tool clamp is matched with the bottom supporting assembly, the harvesting header main beam is fixed and measured at a time, the harvesting header main beam is positioned, clamped and turned over, machining of the four side faces of the bottom cross beam and one face of the top of the top vertical beam is completed in one procedure, and machining efficiency is improved. The problems of low machining efficiency and complicated disassembly and assembly are solved.

Description

Technical Field

[0001] The utility model relates to a special machining fixture for the main beam of a harvesting cutter bar, belonging to the technical field of harvesting cutter bar manufacturing. Background Art

[0002] A fixture is a commonly used auxiliary tool in machining, and its main function is to position and fix parts. For the machining of a specific beam, a machine tool is required to bore holes, tap threads and mill the plane of the beam, and it is necessary to machine the four surrounding faces and the top face. During the machining process, it is necessary to ensure the stability of the workpiece, determine the reference, and ensure the machining accuracy.

[0003] The main beam of the harvesting cutter bar is an important component of the harvesting cutter bar. The main beam of the harvesting cutter bar is composed of a bottom cross beam and a top vertical beam, and is integrally L-shaped. A round tube is also provided at the connection between the bottom cross beam and the top vertical beam. During the production process, it is necessary to machine the four side faces of the bottom cross beam and the top face of the top vertical beam. During the machining process, it is necessary to flip and clamp the main beam of the harvesting cutter bar. The existing equipment cannot complete the machining of the four side faces of the bottom cross beam and the top face of the top vertical beam in the same machining process, and at least two machining processes are required. During the machining process, it is necessary to first fix the bottom cross beam of the main beam of the harvesting cutter bar, measure whether the bottom cross beam is horizontal and vertical, and then machine the four side faces of the bottom cross beam. When machining the top face of the top vertical beam, it is necessary to remove the main beam of the harvesting cutter bar, flip it flat, reposition and measure it, and then machine the top face of the top vertical beam. The machining of the main beam of the harvesting cutter bar becomes cumbersome by performing two processes, and it is necessary for workers to fix, remove and measure the main beam of the harvesting cutter bar multiple times, resulting in a long machining time and low machining efficiency for the main beam of the harvesting cutter bar. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a special machining fixture for the main beam of a harvesting cutter bar. Through the cooperation of the fixture assembly and the bottom support assembly of the special machining fixture, the main beam of the harvesting cutter bar is fixed and measured once, and the main beam of the harvesting cutter bar is positioned, clamped and flipped, so as to complete the machining of the four side faces of the bottom cross beam and the top face of the top vertical beam in one process, and solve the problems of low machining efficiency and cumbersome disassembly and assembly.

[0005] The technical solution of the utility model is as follows:

[0006] A special machining fixture for the main beam of a harvesting cutter bar. The main beam of the harvesting cutter bar is composed of a bottom cross beam and a top vertical beam, and is in an overall L shape. A round tube is provided at the connection of the bottom cross beam and the top vertical beam. The special machining fixture for the main beam of the harvesting cutter bar includes a bottom support assembly and a fixture assembly. The fixture assembly is provided on the bottom support assembly. The bottom support assembly and the fixture assembly are connected by a bushing and a shaft. The main beam of the harvesting cutter bar is positioned in the fixture assembly, and four side surfaces of the bottom cross beam of the main beam of the harvesting cutter bar are machined. After the main beam of the harvesting cutter bar is flipped with the fixture assembly, one top surface of the top vertical beam of the main beam of the harvesting cutter bar is machined.

[0007] The bottom support assembly includes long support square tubes, short support square tubes, bottom support plates, base square tubes and shafts. Two short support square tubes, two long support square tubes and three base square tubes are placed parallel to each other and are all perpendicular to the bottom support plate. A plurality of grooves are provided on both the upper and lower parts of the bottom support plate, and a first round hole is also provided on the upper part. The number of bottom support plates is multiple and they are arranged in parallel. Two short support square tubes, two long support square tubes and three base square tubes are respectively embedded in the grooves of the bottom support plate and welded to the bottom support plate. Three base square tubes are respectively embedded in the lower grooves of the bottom support plate, and two short support square tubes and two long support square tubes are respectively embedded in the upper grooves of the bottom support plate. The shaft is embedded in the first round hole on the upper part of the bottom support plate, and a plurality of bushings are matched with the plurality of shafts. The outermost base square tube is provided with a lower positioning plate, and a first locking nut is arranged on the lower positioning plate.

[0008] The fixture assembly includes a front support, a middle support, a tail support, a reinforcement frame, a reinforcement square tube and bushings. The bottoms of the front support, the middle support, the tail support and the reinforcement frame are successively and perpendicularly welded to the reinforcement square tube. Round holes two are provided at the bottoms of the front support, the middle support and the tail support, and are respectively penetrated and matched with the corresponding bushings. The upper part of the reinforcement frame extends towards the upper part of the tail support and is fixedly connected to the upper part of the tail support. The front support, the middle support and the tail support are all provided with U-shaped grooves. The bottom cross beam of the main beam of the harvesting cutter bar is placed in the U-shaped grooves, and a locking plate is provided on the U-shaped grooves to lock and position by closing the U-shaped grooves. The upper part of the tail support is provided with a cover plate support, and a U-shaped top cover plate is provided on the cover plate support. The top vertical beam of the main beam of the harvesting cutter bar is positioned in the U-shaped top cover plate.

[0009] The reinforcement frame includes a frame body, an inclined beam and a lapping beam. The frame body is arranged perpendicular to the reinforcement square tube. One end of the top of the frame body extends towards the direction close to the tail support to form a lapping beam. The lapping beam is parallel to the reinforcement square tube and is welded to the top of the tail support. The other end of the top of the frame body is connected to one end of the inclined beam, and the other end of the inclined beam is connected to the lapping beam. The top of the frame body, the inclined beam and the lapping beam form a right triangle.

[0010] The inclined beam is provided with a tail fixing group, and the tail fixing group includes a connecting plate, a pressing lead screw, a U-shaped baffle, an intermediate partition plate, a profiling pressing plate, a locking nut three and a locking nut four. The connecting plate is fixed on the inclined beam, and the upper part of the pressing lead screw is arranged on the connecting plate through the locking nut three. There is a round hole three in the center of the U-shaped baffle. The U-shaped baffle is welded to the intermediate partition plate. A locking nut four is arranged in the space between the U-shaped baffle and the intermediate partition plate. The lower end of the pressing lead screw passes through the round hole three in the center of the U-shaped baffle and is welded with the locking nut four. The profiling pressing plate is arranged below the intermediate partition plate, and the bottom of the profiling pressing plate is arc-shaped and matches the outer shape of the round tube at the connection of the bottom cross beam and the top vertical beam. Rotating the pressing lead screw, the up and down movement of the locking nut four is restricted by the U-shaped baffle and the intermediate partition plate. The U-shaped baffle and the intermediate partition plate move along with the movement of the locking nut four, thereby driving the profiling pressing plate to move. The profiling pressing plate abuts against the round tube, and presses and positions the round tube of the main beam of the harvesting cutter head.

[0011] A triangular support is arranged between the inclined beam and the connecting plate to increase the strength.

[0012] The cross beam at the bottom of the frame body is welded to the reinforcing square tube.

[0013] The tail of the bottom support assembly is provided with a tail fine-tuning seat. The tail fine-tuning seat is arranged on the fine-tuning positioning plate, and the fine-tuning positioning plate is welded to the base square tube. The tail fine-tuning seat is provided with a tail fine-tuning bolt, and the tail fine-tuning bolt fixes the tail fine-tuning seat on the fine-tuning positioning plate.

[0014] A reinforcing base is arranged between two adjacent bottom square tubes, and both sides of the reinforcing base are welded to the adjacent base square tubes respectively.

[0015] There are three bottom support plates, which are arranged in parallel with each other.

[0016] An axle sleeve cover plate is arranged on the side of the shaft to fix the shaft in the upper round hole one of the bottom support plate. A support reinforcing plate is also arranged on the bottom square tube, and the shaft passes through the support reinforcing plate. The support reinforcing plate supports and reinforces the shaft. The support reinforcing plate is of a bent structure, and the bent part is welded to the bottom support plate. The axle sleeve cover plate is welded to one side of the shaft and is also welded to the bottom support plate. The axle sleeve is sleeved on the shaft.

[0017] The utility model positions, clamps and flips the main beam of the harvesting cutter head. The bottom support assembly and the tooling fixture assembly are connected by an axle sleeve and a shaft. The main beam of the harvesting cutter head is positioned in the tooling fixture assembly, and four side surfaces of the bottom cross beam of the main beam of the harvesting cutter head are machined. The tooling fixture assembly can be flipped on the bottom support assembly through the axle sleeve and the shaft. After the main beam of the harvesting cutter head is flipped along with the tooling fixture assembly, the top surface of the top vertical beam of the main beam of the harvesting cutter head is machined.

[0018] The bottom cross beam of the main beam of the harvesting header is placed in the U-shaped grooves of the front support, middle support and tail support, and locked and positioned by closing the U-shaped grooves with locking plates; the top vertical beam of the main beam of the harvesting header is positioned in the top cover plate at the top of the U-shaped of the tail support; the profiling pressure plate of the tail fixing group presses against the round tube to press and position the round tube of the main beam of the harvesting header.

[0019] The beneficial effects of the present utility model: Through the cooperation of the fixture assembly and the bottom support assembly of the special machining fixture, the main beam of the harvesting header is fixed and measured once, positioned, clamped and flipped, so as to complete the machining of the four sides of the bottom cross beam and the top surface of the top vertical beam in one process, and solve the problems of low machining efficiency and cumbersome disassembly and assembly. Brief Description of the Drawings

[0020] Figure 1 It is a three-dimensional view of an embodiment of the utility model;

[0021] Figure 2 It is a three-dimensional view after flipping of an embodiment of the utility model;

[0022] Figure 3 It is a three-dimensional view of the base bearing group of an embodiment of the utility model;

[0023] Figure 4 It is a three-dimensional view of the fixture group of an embodiment of the utility model;

[0024] Figure 5 It is a three-dimensional view of the tail fixing group of an embodiment of the present utility model;

[0025] Figure 6 It is a three-dimensional view of the fixed frame of an embodiment of the utility model;

[0026] In the figure: bottom support assembly 1, base square tube 11, reinforced base 12, bottom support plate 13, long support square tube 14, locking nut 1 15, shaft 16, shaft sleeve cover plate 17, support reinforcement plate 18, fine adjustment positioning plate 19, tail fine adjustment seat 110, tail fine adjustment bolt 111, lower positioning plate 112, short support square tube 113, locking nut 1 115, tooling fixture assembly 2, front end fine adjustment bolt 21, front end support 22, side positioning bolt 23, limit lead screw 24, pin shaft 25, positioning bolt 26, locking plate 27, front end cover plate 28, front end adjustment bolt 29, upper positioning plate 1 210, positioning plate 211, middle support 212, locking nut 2 213, long locking bolt 214, middle cover plate 215, tail support 216, cover plate support 217, top cover plate 218, top positioning bolt 219, bolt baffle 220, top positioning plate 221, top rotation bolt 222, top pressing bolt 223, connecting plate 223-1, triangular support 223-2, pressing lead screw 223-3, U-shaped baffle 223-4, middle partition plate 223-5, profiling pressing plate 223-6, locking nut 3 223-7, locking nut 4 223-8, top pressing plate 224, middle adjustment bolt 225, tail adjustment bolt 226, upper positioning plate 2 227, locking bolt 228, tail fixing group 229, reinforced square tube 230, reinforced frame 231, frame main body 231-1, inclined beam 231-2, overlapping beam 231-3, cross beam 231-4, shaft sleeve 232, harvesting cutter bar main beam 3, bottom cross beam 31, top vertical beam 32, round tube 33. Detailed implementation mode

[0027] The present utility model is further elaborated in detail through the following embodiments.

[0028] A special machining tooling fixture for a harvesting cutter bar main beam, the harvesting cutter bar main beam 3 is composed of a bottom cross beam 31 and a top vertical beam 32, and is in an overall L shape. A round tube 33 is provided at the connection of the bottom cross beam 31 and the top vertical beam 32; the special machining tooling fixture for the harvesting cutter bar main beam includes a bottom support assembly 1 and a tooling fixture assembly 2. The tooling fixture assembly 2 is provided on the bottom support assembly 1. The bottom support assembly 1 and the tooling fixture assembly 2 are connected by a shaft sleeve 232 and a shaft 16. The harvesting cutter bar main beam 3 is positioned in the tooling fixture assembly 2, and the four side surfaces of the bottom cross beam 31 of the harvesting cutter bar main beam 3 are machined; after the harvesting cutter bar main beam 3 is flipped with the tooling fixture assembly 2, one top surface of the top vertical beam 32 of the harvesting cutter bar main beam 3 is machined;

[0029] The bottom support assembly 1 includes a long support square tube 14, a short support square tube 113, a bottom support plate 13, a base square tube 11, and a shaft 16. Two short support square tubes 113, two long support square tubes 14, and three base square tubes 11 are placed parallel to each other and are all perpendicular to the bottom support plate 13. Multiple grooves are provided on both the upper and lower parts of the bottom support plate 13, and a first round hole is also provided on the upper part. The number of bottom support plates 13 is multiple and they are arranged parallel to each other; the two short support square tubes 113, two long support square tubes 14, and three base square tubes 11 are respectively embedded in the grooves of the bottom support plate 13 and welded to the bottom support plate 13; the three base square tubes 11 are respectively embedded in the lower grooves of the bottom support plate 13, and the two short support square tubes 113 and two long support square tubes 14 are respectively embedded in the upper grooves of the bottom support plate 13; the shaft 16 is embedded in the first round hole on the upper part of the bottom support plate 13, and multiple shaft sleeves 232 are matched with multiple shafts 16; the outermost base square tube 11 is provided with a lower positioning plate 112, and a first locking nut 15 is arranged on the lower positioning plate 112;

[0030] The tooling fixture assembly 2 includes a front support 22, a middle support 212, a tail support 216, a reinforcement frame 231, a reinforcement square tube 230, and a shaft sleeve 232; the bottoms of the front support 22, the middle support 212, the tail support 216, and the reinforcement frame 231 are successively and perpendicularly welded to the reinforcement square tube 230. Round holes two are provided at the bottoms of the front support 22, the middle support 212, and the tail support 216 and are respectively penetrated and matched with the corresponding shaft sleeves 232; the upper part of the reinforcement frame 231 extends towards the upper part of the tail support 216 and is fixedly connected to the upper part of the tail support 216; the front support 22, the middle support 212, and the tail support 216 are all provided with U-shaped grooves, and the bottom cross beam 31 of the harvesting cutter bar main beam 3 is placed in the U-shaped grooves. Locking plates 27 are provided on the U-shaped grooves, and the U-shaped grooves are closed and locked by the locking plates 27 for positioning; a cover plate support 217 is provided on the upper part of the tail support 216, and a U-shaped top cover plate 218 is provided on the cover plate support 217. The top vertical beam 32 of the harvesting cutter bar main beam 3 is positioned in the U-shaped top cover plate 218.

[0031] The reinforcement frame 231 includes a frame main body 231-1, an inclined beam 231-2, and a lapping beam 231-3. The frame main body 231-1 is arranged perpendicular to the reinforcement square tube 230. One end of the top of the frame main body 231-1 extends towards the tail support 216 to protrude the lapping beam 231-3. The lapping beam 231-3 is parallel to the reinforcement square tube 230, and the lapping beam 231-3 is welded and connected to the top of the tail support 216. The other end of the top of the frame main body 231-1 is connected to one end of the inclined beam 231-2, and the other end of the inclined beam 231-2 is connected to the lapping beam 231-3. The top of the frame main body 231-1, the inclined beam 231-2, and the lapping beam 231-3 form a right triangle.

[0032] The inclined beam 231-2 is provided with a tail fixing group 229. The tail fixing group 229 includes a connecting plate 223-1, a pressing lead screw 223-3, a U-shaped baffle 223-4, an intermediate partition 223-5, a profiling pressing plate 223-6, a locking nut III 223-7 and a locking nut IV 223-8. The connecting plate 223-1 is fixed on the inclined beam 231-2, and the upper part of the pressing lead screw 223-3 is arranged on the connecting plate 223-1 through the locking nut III 223-7. There is a circular hole III in the center of the U-shaped baffle 223-4. The U-shaped baffle 223-4 is welded to the intermediate partition 223-5. A locking nut IV 223-8 is arranged in the space between the U-shaped baffle 223-4 and the intermediate partition 223-5. The lower end of the pressing lead screw 223-3 passes through the circular hole III in the center of the U-shaped baffle 223-4 and is then welded to the locking nut IV 223-8. The profiling pressing plate 223-6 is arranged below the intermediate partition 223-5. The bottom of the profiling pressing plate 223-6 is arc-shaped and matches the outer shape of the round tube 33 at the connection of the bottom cross beam 31 and the top vertical beam 32. By rotating the pressing lead screw 223-3, the up and down movement of the locking nut IV 223-8 is restricted by the U-shaped baffle 223-4 and the intermediate partition 223-5. The U-shaped baffle 223-4 and the intermediate partition 223-5 move along with the movement of the locking nut IV 223-8, thereby driving the profiling pressing plate 223-6 to move. The profiling pressing plate 223-6 abuts against the round tube 33, and the round tube 33 of the main beam 3 of the harvesting cutter head is pressed and positioned.

[0033] A triangular support 223-2 is arranged between the inclined beam 231-2 and the connecting plate 223-1 to increase the strength.

[0034] The cross beam 231-4 at the bottom of the frame main body 231-1 is welded to the reinforcing square tube 230.

[0035] A tail fine-tuning seat 110 is arranged at the tail of the bottom support assembly 1. The tail fine-tuning seat 110 is arranged on the fine-tuning positioning plate 19. The fine-tuning positioning plate 19 is welded to the base square tube 11. A tail fine-tuning bolt 111 is arranged on the tail fine-tuning seat 110, and the tail fine-tuning bolt is fixed to the fine-tuning positioning plate 19 together with the tail fine-tuning seat 110.

[0036] A reinforcing base 12 is arranged between two adjacent bottom square tubes 11. Both sides of the reinforcing base 12 are welded to the adjacent base square tubes respectively.

[0037] There are three bottom support plates 13, which are arranged in parallel with each other.

[0038] A bushing cover plate 17 is provided on the side of the shaft 16, and the shaft 16 is fixed in the upper circular hole one of the bottom support plate 13; a support reinforcement plate 18 is further provided on the bottom square tube 11, and the shaft 16 passes through the support reinforcement plate 18, and the support reinforcement plate 18 supports and reinforces the shaft 16. The support reinforcement plate 18 is of a bent structure, and the bent part is welded to the bottom support plate 13. The bushing cover plate 17 is welded to one side of the shaft 16 and is also welded to the bottom support plate 13. The bushing 232 is sleeved on the shaft 16.

[0039] The utility model positions, clamps and flips the main beam of the harvesting cutting table; the bottom support assembly 1 and the tooling fixture assembly 2 are connected by a bushing 232 and a shaft 16, the main beam 3 of the harvesting cutting table is positioned in the tooling fixture assembly 2, and four side surfaces of the bottom cross beam 31 of the main beam 3 of the harvesting cutting table are machined; the tooling fixture assembly 2 can be flipped on the bottom support assembly 1 through the bushing 232 and the shaft 16, and after the main beam 3 of the harvesting cutting table is flipped with the tooling fixture assembly 2, the top surface of the top vertical beam 32 of the main beam 3 of the harvesting cutting table is machined.

[0040] The bottom cross beam 31 of the main beam 3 of the harvesting cutting table is placed in the U-shaped grooves of the front support 22, the middle support 212 and the tail support 216, and the U-shaped grooves are closed and locked in position by a locking plate 27; the top vertical beam 32 of the main beam 3 of the harvesting cutting table is positioned in the top cover plate 218 of the U shape at the top of the tail support 216; the profiling pressing plate 223-6 of the tail fixing group 229 abuts against the round tube 33, and the round tube 33 of the main beam 3 of the harvesting cutting table is pressed and positioned.

[0041] In the embodiment, as Figure 1 shown, a special machining tooling fixture for the main beam of the harvesting cutting table includes a bottom support assembly 1 and a tooling fixture assembly 2. The bottom support assembly 1 is fixed on the base of the machine tool, and the tooling fixture assembly 2 is reversibly connected to the bottom support assembly 1 and is placed on the bottom support assembly. The main beam 3 of the harvesting cutting table is positioned and fixed through the tooling fixture assembly 2; the main beam 3 of the harvesting cutting table is composed of a bottom cross beam 31 and a top vertical beam 32, and is integrally L-shaped. A round tube 33 is provided at the connection between the bottom cross beam 31 and the top vertical beam 32; four side surfaces of the bottom cross beam 31 of the main beam 3 of the harvesting cutting table are machined by the machine tool.

[0042] As Figure 2 shown, the main beam 3 of the harvesting cutting table is fixed in the tooling fixture assembly 2. After the tooling fixture assembly 2 is flipped, the tooling fixture assembly 2 is still placed on the bottom support assembly 1, and the main beam 3 of the harvesting cutting table is flipped with the tooling fixture assembly 2, and the top surface of the top vertical beam 32 of the main beam 3 of the harvesting cutting table is machined by the machine tool.

[0043] As Figure 1 、 Figure 3 、 Figure 4As shown in the figure, the bottom support assembly 1 is connected to the tooling fixture assembly 2 through a bushing 232 and a shaft 16. The bushing 232 passes through the corresponding bottom round holes two of the front support 22, the middle support 212, and the tail support 216 and is welded to them. The shaft 16 passes through the upper round hole one of the bottom support plate 13 and the support reinforcement plate 18. When machining the four side faces of the bottom crossbeam 31 of the harvesting cutter bar main beam 3, the tooling fixture assembly 2 is placed flat on the bottom support assembly 1, and the long support square tube 14 supports the front support 22, the middle support 212, and the tail support 216. When machining one face at the top of the top vertical beam 32 of the harvesting cutter bar main beam 3, the positions of the bushing 232 and the shaft 16 remain unchanged, and the bushing 232 rotates according to the center line position of the shaft 16, and the tooling fixture assembly 2 flips accordingly. After flipping, the short support square tube 113 supports the front support 22, the middle support 212, and the tail support 216. Whether placed flat or flipped, the bottom surface or side surface of the reinforcement frame 231 contacts the machine tool to support the overall tooling fixture.

[0044] As Figure 1 , Figure 4 shown, when adjusting and positioning the front end of the bottom crossbeam 31 of the harvesting cutter bar main beam 3, place the front end of the bottom crossbeam 31 of the harvesting cutter bar main beam 3 in the U-shaped groove of the front support 22, and lock it through the lock nut two 213 on the locking plate 27 and the long locking bolt 214 on the front support 22 to fix the front cover plate 28. Fix the distance from the front end of the bottom crossbeam 31 of the harvesting cutter bar main beam 3 to the front support 22 through the limit lead screw 24. Side positioning bolts 23 are provided on both sides of the front support 22 to adjust and position the lateral position of the front end of the bottom crossbeam 31 of the harvesting cutter bar main beam 3. Fine-tune the height of the front end of the bottom crossbeam 31 of the harvesting cutter bar main beam 3 through the front fine-tuning bolt 21, and cooperate with the lock nut two 213 on the front cover plate 28 through the positioning bolt 26 to position the height of the front end of the bottom crossbeam 31 of the harvesting cutter bar main beam 3.

[0045] As Figure 1 , Figure 3 , Figure 4 shown, when adjusting and positioning the middle and tail parts of the bottom crossbeam 31 of the harvesting cutter bar main beam 3, place the bottom crossbeam 31 of the harvesting cutter bar main beam 3 in the U-shaped grooves of the middle support 212 and the tail support 216, and the adjustment method is the same as that of the front support 22.

[0046] Fine-tune the height of the tail of the bottom crossbeam 31 of the harvesting cutter bar main beam 3 through the tail fine-tuning seat 110 and the tail fine-tuning bolt 111 on the bottom support assembly 1. Rotate the tail fine-tuning bolt 111 to fine-tune the height of the tail of the harvesting cutter bar main beam 3, and position the height of the tail of the bottom crossbeam 31 of the harvesting cutter bar main beam 3 through the tail fixing group 229.

[0047] As Figure 4 , Figure 6 shown, when positioning the top of the vertical beam 32 of the main beam 3 of the harvesting header, the cover plate support 217 and the top cover plate 218 are connected by a pin shaft 25, and the top cover plate 218 is fixed by a top pressing bolt 223 and a top positioning plate 221. The bolt baffle 220 is welded on the overlapping beam 231-3 of the reinforcement frame 231, two lock nuts are arranged vertically and welded on the bolt baffle 220, the top rotating bolt 222 cooperates with the lock nuts, the top pressing bolt 223 is welded on the top rotating bolt 222, and by rotating the top rotating bolt 222, the top pressing bolt 223 loosens the bolt baffle 220 to realize the opening and closing of the top baffle 224. The top pressing plate 224 and the top positioning bolt 219 clamp and position both sides of the top of the vertical beam 32 of the main beam 3 of the harvesting header.

[0048] As Figure 4 , Figure 5 , Figure 6 shown, in the tail fixing group 223, the connecting plate 223-1 and the triangular support 223-2 are welded on the inclined beam 231-2 of the reinforcement frame 231. A locking nut three is welded at the center hole of the connecting plate 223-1, and one end of the pressing lead screw 223-3 passes through the U-shaped baffle 223-4 and is welded to the locking nut four. By rotating the pressing lead screw 223-3, the U-shaped baffle 223-4 and the middle partition 223-5 move along with the locking nut four, realizing the up and down movement of the profiling pressing plate 223-6 to press and position the round tube 33 of the main beam 3 of the harvesting header.

[0049] As Figure 1 , Figure 2 , Figure 3 , Figure 4 shown, when the tooling fixture assembly 2 is placed flat, the positioning plate 211, the lower positioning plate 112 and the locking bolt 228 cooperate to ensure the fixation of the tooling fixture assembly 2 on the bottom support assembly 1. After the tooling fixture assembly 2 is flipped, the upper positioning plate one 210, the upper positioning plate two 227, the lower positioning plate 112 and the locking bolt 228 cooperate, and by tightening the locking bolt 228, the upper positioning plate one 210 and the upper positioning plate two 227 are locked on the lower positioning plate 112 to ensure the fixation of the flipped tooling fixture assembly 2 on the bottom support assembly 1.

Claims

1. A special machining fixture for a harvesting platform main beam, wherein the harvesting platform main beam (3) is composed of a bottom cross beam (31) and a top vertical beam (32), and is L-shaped as a whole, and a round tube (33) is provided at the connection between the bottom cross beam (31) and the top vertical beam (32); the characteristics are: The special machining fixture for the main beam of the harvesting platform comprises a bottom support component (1) and a fixture component (2); the bottom support component (1) is provided with a fixture component (2); the bottom support component (1) and the fixture component (2) are connected via a shaft sleeve (232) and a shaft (16); the main beam (3) of the harvesting platform is positioned in the fixture component (2); four side surfaces of the bottom cross beam (31) of the main beam (3) of the harvesting platform are machined; after the main beam (3) of the harvesting platform is turned over with the fixture component (2), a top surface of the top vertical beam (32) of the main beam (3) of the harvesting platform is machined; The bottom support assembly (1) comprises a long support square tube (14), a short support square tube (113), a bottom support plate (13), a base square tube (11) and a shaft (16); the two short support square tubes (113), the two long support square tubes (14) and the three base square tubes (11) are arranged parallel to each other and are perpendicular to the bottom support plate (13); the bottom support plate (13) is provided with a plurality of grooves at the upper and lower parts and a circular hole at the upper part; the bottom support plates (13) are multiple and arranged parallel to each other; the two short support square tubes (113), the two long support square tubes (14) and the three bases The square tubes (11) are respectively embedded in the grooves of the bottom support plate (13) and welded to the bottom support plate (13); the three base square tubes (11) are respectively embedded in the lower grooves of the bottom support plate (13), and the two short support square tubes (113) and the two long support square tubes (14) are respectively embedded in the upper grooves of the bottom support plate (13); the shaft (16) is embedded in the upper circular hole 1 of the bottom support plate (13), and the plurality of shaft sleeves (232) match the plurality of shafts (16); the outermost base square tube (11) is provided with a lower positioning plate (112), and a locking nut 1 (15) is provided on the lower positioning plate (112); The fixture assembly (2) comprises a front end support (22), a middle support (212), a rear end support (216), a reinforcement frame (231), a reinforcement square tube (230) and a shaft sleeve (232); the bottoms of the front end support (22), the middle support (212), the rear end support (216) and the reinforcement frame (231) are vertically welded to the reinforcement square tube (230) in sequence; the bottoms of the front end support (22), the middle support (212) and the rear end support (216) are each provided with two circular holes, which are respectively inserted and matched with the corresponding shaft sleeves (232); the upper part of the reinforcement frame (231) extends toward the rear end support ( The front end support (22), the middle support (212) and the tail support (216) are all provided with a U-shaped groove, the bottom cross beam (31) of the harvesting platform main beam (3) is placed in the U-shaped groove, a locking plate (27) is provided on the U-shaped groove, and the U-shaped groove is closed and locked in position by the locking plate (27); the upper part of the tail support (216) is provided with a cover plate support (217), the cover plate support (217) is provided with a U-shaped top cover plate (218), and the top vertical beam (32) of the harvesting platform main beam (3) is positioned in the U-shaped top cover plate (218).

2. A special machining fixture for the main beam of a harvesting header according to claim 1, characterized in that: The reinforcement frame (231) comprises a frame body (231-1), an inclined beam (231-2) and a lap beam (231-3); the frame body (231-1) is arranged perpendicular to the reinforcement square tube (230); one end of the top of the frame body (231-1) extends the lap beam (231-3) in a direction close to the tail support (216); the lap beam (231-3) is parallel to the reinforcement square tube (230); the lap beam (231-3) is welded to the top of the tail support (216); the other end of the top of the frame body (231-1) is connected to one end of the inclined beam (231-2); the other end of the inclined beam (231-2) is connected to the lap beam (231-3); the top of the frame body (231-1), the inclined beam (231-2) and the lap beam (231-3) form a right triangle.

3. The special machining fixture for the main beam of the harvesting header according to claim 2, characterized in that: The inclined beam (231-2) is provided with a tail fixing group (229), the tail fixing group (229) comprising a connecting plate (223-1), a pressing screw (223-3), a U-shaped baffle (223-4), a middle partition (223-5), a contoured pressing plate (223-6), a locking nut three (223-7) and a locking nut four (223-8), the connecting plate (223-1) is fixed on the inclined beam (231-2), the upper part of the pressing screw (223-3) is arranged on the connecting plate (223-1) through the locking nut three (223-7); the center of the U-shaped baffle (223-4) has The U-shaped baffle (223-4) and the middle partition (223-5) are welded, and a locking nut (223-8) is provided in the space between the U-shaped baffle (223-4) and the middle partition (223-5). The lower end of the compression screw (223-3) passes through the circular hole (3) in the center of the U-shaped baffle (223-4) and then the locking nut (223-8) is welded. A profiling pressure plate (223-6) is provided below the middle partition (223-5), and the bottom of the profiling pressure plate (223-6) is in an arc shape, which matches the shape of the round tube (33) at the connection between the bottom cross beam (31) and the top vertical beam (32).

4. The special machining fixture for the main beam of the harvesting header according to claim 3, characterized in that: A triangular support (223-2) is provided between the inclined beam (231-2) and the connecting plate (223-1).

5. The special machining fixture for the main beam of a harvesting header according to claim 2, characterized in that: The crossbeam (231-4) at the bottom of the frame body (231-1) is welded to the reinforced square tube (230).

6. A special machining fixture for the main beam of a harvesting header according to claim 1 or 2, characterized in that: The tail of the bottom support assembly (1) is provided with a tail fine-tuning seat (110), which is arranged on a fine-tuning positioning plate (19), and the fine-tuning positioning plate (19) is welded to the base square tube (11), and the tail fine-tuning seat (110) is provided with a tail fine-tuning bolt (111), which is fixed to the fine-tuning positioning plate (19) together with the tail fine-tuning seat (110).

Images