Crop harvesting equipment

Abstract

The invention relates to the technical field of crop harvesting, and discloses crop harvesting equipment which comprises a moving seat and a conveying frame installed at the position, close to the other side, of the top of the moving seat, a screening frame is installed at the position, close to the rear side, of the top of the moving seat, and a harvesting platform A is fixedly installed at the position, close to the rear side, of one side of the moving seat; a harvesting platform B is arranged on the front side of the harvesting platform A. A moving block is fixedly installed on the rear side of the harvesting platform B. The bottom of the moving block is slidably connected with the moving base. An adjusting assembly is arranged on the rear side of the harvesting platform A and the rear side of the harvesting platform B. Under cooperative use of the adjusting assembly and the harvesting assembly, the harvesting platform A and the harvesting platform B can be adjusted. When a rocking wheel is driven, a threaded pipe fixed to the rocking wheel can rotate, a harvesting platform B can move forwards through a threaded rod in threaded connection with the interior of an inner cavity of the threaded pipe, the distance between the harvesting platform A and the harvesting platform B can be adjusted, and the device is suitable for mechanical harvesting of soybeans flexibly planted at intervals in small plots in southern hilly areas.

Description

Technical Field

[0001] The invention relates to the technical field of crop harvesting, in particular to a crop harvesting device. Background Art

[0002] A harvester is an integrated machine for harvesting crops. It can complete harvesting and threshing at one time, and concentrate the grains in a storage bin, and then transport the grains to a transport vehicle via a conveyor belt. It can also be harvested manually by spreading the rice, wheat and other crop stalks in the field, and then picking them up and threshing them with grain harvesters. It is a crop harvester that mainly harvests grains and straws of cereal crops such as rice and wheat.

[0003] In the current soybean-corn strip-compound planting model, soybean harvesters are generally used for soybean harvesting. When the soybean harvester is actually used, the harvesting width is fixed and the width of the harvesting platform cannot be adjusted. It is not suitable for mechanical harvesting of soybeans planted with flexible strip spacing on small plots in the southern hilly areas.

[0004] Therefore, we propose a crop harvesting device to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a crop harvesting device to solve the problems raised by the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a crop harvesting device, comprising a moving seat and a conveying frame installed on the top of the moving seat near the other side, a screening frame installed on the top of the moving seat near the rear side, a harvesting platform A is fixedly installed on one side of the moving seat near the rear side, a harvesting platform B is arranged on the front side of the harvesting platform A, a moving block is fixedly installed on the rear side of the harvesting platform B, and the bottom of the moving block is slidably connected to the moving seat, an adjustment component is commonly arranged on the rear sides of the harvesting platform A and the harvesting platform B, a toggle component is commonly arranged on the tops of the harvesting platform A and the harvesting platform B, an L-shaped baffle A is fixedly installed on the opposite side of the harvesting platform A and the harvesting platform B, a harvesting knife A is fixedly installed on one side of the L-shaped baffle A, and a harvesting component is commonly arranged on the bottom of the L-shaped baffle A;

[0007] The adjustment assembly includes a support block fixedly installed near the other side of the harvesting platform A and a threaded tube that movably penetrates the support block, a rocker is fixedly installed at the rear end of the threaded tube, a threaded rod is threadedly connected to the inner cavity of the threaded tube, a fixed block is fixedly installed at the front end of the threaded rod, and one side of the fixed block is fixedly connected to the harvesting platform B.

[0008] Preferably, a conveying motor is arranged on the rear side of the harvesting platform A near the other side, and a support plate is fixedly installed on the bottom of the conveying motor. The shaft end of the power output shaft of the conveying motor movably passes through the rear side of the inner cavity of the harvesting platform A, and two spiral blades A are arranged on the opposite side of the harvesting platform A and the harvesting platform B, and the front end of the spiral blade A on the front side is rotatably connected to the front side of the inner cavity of the harvesting platform B, and the rear end of the spiral blade A on the rear side is fixedly connected to the shaft end of the power output shaft of the conveying motor.

[0009] Preferably, a cutting strip is fixedly installed at the front end of the spiral blade A on the rear side, a groove A is opened on the rear side of the spiral blade A on the front side, and the front side of the cutting strip is movably inserted into the inner cavity of the groove A; an L-shaped connecting block is fixedly installed on the front side of the harvesting platform A, and a groove B is opened on the rear side of the harvesting platform B, and the L-shaped connecting block is movably inserted in the inner cavity of the groove B; an L-shaped limiting plate is fixedly installed on the front side of the L-shaped baffle A on the rear side, and a groove C is opened on the rear side of the L-shaped baffle A on the front side, and the L-shaped limiting plate is movably inserted in the inner cavity of the groove C.

[0010] Preferably, the harvesting assembly includes a harvesting motor located on the front side of the harvesting platform B and a mounting frame fixedly installed on the front side of the harvesting motor, the rear side of the mounting frame is fixedly connected to the harvesting platform B, the shaft end of the power output shaft of the harvesting motor movably passes through the front side of the inner cavity of the harvesting platform B, and is fixedly installed with an active bevel gear, one side of the active bevel gear is meshed with a driven bevel gear, a plurality of vertical poles are provided at the bottom of the inner cavity of the harvesting platform A and the harvesting platform B, and the top of the vertical pole on the other side passes through the top of the driven bevel gear, the bottom ends of the vertical poles on both sides are rotatably connected to the bottom of the inner cavity of the harvesting platform A and the harvesting platform B respectively, the outer periphery of the vertical pole is fixedly sleeved with a synchronous wheel B, and the outer periphery of the synchronous wheel B is jointly sleeved with a synchronous belt B, and the outer side of the synchronous belt B is fixedly installed with a plurality of harvesting knives B.

[0011] Preferably, the bottom end of the vertical pole located in the middle is rotatably connected to a sliding block, and the bottom end of the sliding block is rotatably connected to the bottom of the inner cavity of the harvesting platform B, a sliding block is fixedly installed on the rear side of the sliding block, and the rear end of the telescopic rod is fixedly connected to the adjacent L-shaped baffle A, and a spring is provided on the peripheral movable sleeve of the telescopic rod, and the front and rear ends of the spring are fixedly connected to the sliding block and the L-shaped baffle A respectively.

[0012] Preferably, the toggle assembly includes a support frame fixedly installed on the top of the harvesting platform A and the harvesting platform B and a rotating shaft movably passing through the support frame, a disc is fixedly installed on the opposite end of the rotating shaft, and a plurality of beams A and a plurality of beams B are fixedly installed on the opposite side of the disc, a groove D is opened on the rear side of the front beam A, and the inner cavity of the groove D is movably inserted in the rectangular bar, the rear side of the rectangular bar is fixedly connected to the adjacent beam B, and a plurality of toggle rods are fixedly installed on the bottom of the beam B and the beam A.

[0013] Preferably, the outer peripheries of the rotating shaft and the shaft ends of the power output shaft of the harvesting motor located at the front side are fixedly sleeved with synchronous wheels A, and a synchronous belt A is sleeved between the synchronous wheels A.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. With the coordinated use of the adjustment component and the harvesting component, the threaded tube fixed on the wheel can be rotated by driving the wheel, and the threaded rod threadedly connected in the inner cavity of the threaded tube can move the harvesting platform B forward, so that the distance between the harvesting platform A and the harvesting platform B can be adjusted, which is suitable for mechanical harvesting of soybeans planted with flexible spacing on small plots in the southern hilly areas.

[0016] 2. When the power output shaft of the harvesting motor rotates, the harvested soybean stalks can be put into the inner cavity of the harvesting platform A and the harvesting platform B under the action of the toggle rod with the cooperation of the toggle assembly, and by setting a rectangular bar that is movably inserted in the inner cavity of the groove D, the soybean stalks can still be collected into the inner cavity of the harvesting platform A and the harvesting platform B after the harvesting area is adjusted, thereby improving the applicability of the toggle assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of the adjustment component of the present invention;

[0019] Figure 3 It is a schematic diagram of the partial three-dimensional structure of the harvesting platform A and the synchronous belt A of the present invention;

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the conveying motor, the support plate and the insert strip of the present invention;

[0021] Figure 5 It is an exploded view of the cross beam B, the rectangular bar and the cross beam A of the present invention;

[0022] Figure 6 It is a partial bottom-up three-dimensional structural schematic diagram of the synchronous belt B, the sliding block and the harvesting knife B of the present invention;

[0023] Figure 7 For the present invention Figure 6 Enlarged view of point A in the middle.

[0024] In the figure: 1, moving seat; 2, conveying frame; 3, screening frame; 4, harvesting platform A; 41, conveying motor; 42, support plate; 43, spiral blade A; 44, insert; 45, L-shaped connecting block; 5, harvesting platform B; 6, L-shaped baffle A; 61, L-shaped limit plate; 7, toggle assembly; 71, support frame; 72, rotating shaft; 721, synchronous belt A; 73, disc; 74, beam A; 75, rectangular bar; 76, beam B; 77. Toggle lever; 8. Adjustment assembly; 81. Support block; 82. Threaded pipe; 83. Threaded rod; 84. Fixed block; 85. Rocker; 9. Harvesting assembly; 91. Harvesting motor; 92. Mounting frame; 93. Active bevel gear; 94. Driven bevel gear; 95. Vertical pole; 951. Sliding block; 952. Telescopic rod; 953. Spring; 96. Synchronous belt B; 97. Harvesting knife B; 10. Harvesting knife A; 20. Moving block. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Example 1

[0027] See also Figure 1-7 A crop harvesting device comprises a movable seat 1 and a conveying frame 2 installed on the top of the movable seat 1 near the other side, a screening frame 3 is installed on the top of the movable seat 1 near the rear side, a harvesting platform A4 is fixedly installed on one side of the movable seat 1 near the rear side, a harvesting platform B5 is arranged on the front side of the harvesting platform A4, a movable block 20 is fixedly installed on the rear side of the harvesting platform B5, and the bottom of the movable block 20 is slidably connected with the movable seat 1, an adjusting component 8 is commonly arranged on the rear sides of the harvesting platform A4 and the harvesting platform B5, a toggle component 7 is commonly arranged on the tops of the harvesting platform A4 and the harvesting platform B5, an L-shaped baffle A6 is fixedly installed on the opposite side of the harvesting platform A4 and the harvesting platform B5, a harvesting knife A10 is fixedly installed on one side of the L-shaped baffle A6, and a harvesting component 9 is commonly arranged on the bottom of the L-shaped baffle A6;

[0028] The adjustment assembly 8 includes a support block 81 fixedly installed near the other side of the harvesting platform A4 and a threaded tube 82 that movably penetrates the support block 81, a rocker 85 is fixedly installed at the rear end of the threaded tube 82, a threaded rod 83 is threadedly connected to the inner cavity of the threaded tube 82, a fixed block 84 is fixedly installed at the front end of the threaded rod 83, and one side of the fixed block 84 is fixedly connected to the harvesting platform B5.

[0029] Specifically, with the coordinated use of the adjustment component 8 and the harvesting component 9, the threaded tube 82 fixed on the wheel 85 can be rotated by driving the wheel 85, and the threaded rod 83 threadedly connected in the inner cavity of the threaded tube 82 can move the harvesting platform B5 forward, so that the distance between the harvesting platform A4 and the harvesting platform B5 can be adjusted, which is suitable for mechanical harvesting of soybeans planted with flexible spacing on small plots in the southern hilly areas.

[0030] A conveying motor 41 is arranged on the rear side of the harvesting platform A4 near the other side, and a support plate 42 is fixedly installed on the bottom of the conveying motor 41. The shaft end of the power output shaft of the conveying motor 41 movably passes through the rear side of the inner cavity of the harvesting platform A4, and two spiral blades A43 are arranged on the opposite side of the harvesting platform A4 and the harvesting platform B5, and the front end of the spiral blade A43 on the front side is rotatably connected to the front side of the inner cavity of the harvesting platform B5, and the rear end of the spiral blade A43 on the rear side is fixedly connected to the shaft end of the power output shaft of the conveying motor 41.

[0031] Specifically, the conveying motor 41 can rotate the adjacent spiral blades A43 to convey the soybean straw onto the conveying rack 2 .

[0032] An insertion strip 44 is fixedly installed on the front end of the rear spiral blade A43, a groove A is opened on the rear side of the front spiral blade A43, and the front side of the insertion strip 44 is movably inserted into the inner cavity of the groove A; an L-shaped connecting block 45 is fixedly installed on the front side of the harvesting platform A4, and a groove B is opened on the rear side of the harvesting platform B5, and the L-shaped connecting block 45 is movably inserted in the inner cavity of the groove B; an L-shaped limiting plate 61 is fixedly installed on the front side of the L-shaped baffle A6 on the rear side, and a groove C is opened on the rear side of the L-shaped baffle A6 on the front side, and the L-shaped limiting plate 61 is movably inserted in the inner cavity of the groove C.

[0033] The harvesting assembly 9 includes a harvesting motor 91 located at the front side of the harvesting platform B5 and a mounting frame 92 fixedly installed at the front side of the harvesting motor 91. The rear side of the mounting frame 92 is fixedly connected to the harvesting platform B5. The end of the power output shaft of the harvesting motor 91 movably passes through the front side of the inner cavity of the harvesting platform B5, and is fixedly installed with an active bevel gear 93. A driven bevel gear 94 is meshed with one side of the active bevel gear 93. A plurality of vertical poles 95 are arranged at the bottom of the inner cavity of the harvesting platform A4 and the harvesting platform B5, and the top end of the vertical pole 95 on the other side passes through the top of the driven bevel gear 94. The bottom ends of the vertical poles 95 on both sides are respectively connected to the inner cavity of the harvesting platform A4 and the harvesting platform B5. The bottom of the cavity is rotatably connected, and the outer periphery of the vertical rod 95 is fixedly sleeved with a synchronous wheel B, and the outer periphery of the synchronous wheel B is jointly sleeved with a synchronous belt B96, and a number of harvesting knives B97 are fixedly installed on the outer side of the synchronous belt B96; the bottom end of the vertical rod 95 located in the middle is rotatably connected with a sliding block 951, and the bottom end of the sliding block 951 is rotatably connected to the bottom of the inner cavity of the harvesting platform B5, the rear side of the sliding block 951 is fixedly installed with a sliding block 951, and the rear end of the telescopic rod 952 is fixedly connected to the adjacent L-shaped baffle A6, the outer periphery of the telescopic rod 952 is movably sleeved with a spring 953, and the front and rear ends of the spring 953 are respectively fixedly connected to the sliding block 951 and the L-shaped baffle A6.

[0034] Specifically, when the power output shaft of the harvesting motor 91 rotates, the active bevel gear 93 fixed at the end of the power output shaft of the harvesting motor 91 can cause the driven bevel gear 94 meshing therewith to rotate, and under the action of the synchronous belt B96 and the synchronous wheel B, the synchronous belt B96 can move around a number of vertical poles 95, and the soybean stalks can be harvested by the cooperation of the harvesting knife B97 fixed on the synchronous belt B96 and the harvesting knife A10.

[0035] Example 2

[0036] This embodiment is an improvement made on the basis of embodiment 1. For details, please refer to Figure 1 , Figure 2 and Figure 3 The toggle assembly 7 includes a support frame 71 fixedly installed on the top of the harvesting platform A4 and the harvesting platform B5 and a rotating shaft 72 movably passing through the support frame 71, a disc 73 is fixedly installed on the opposite end of the rotating shaft 72, and a plurality of beams A74 and a plurality of beams B76 are fixedly installed on the opposite side of the disc 73, a groove D is opened on the rear side of the front beam A74, and the inner cavity of the groove D is movably inserted in the rectangular bar 75, and the rear side of the rectangular bar 75 is fixedly connected to the adjacent beam B76, and a plurality of toggle rods 77 are fixedly installed on the bottom of the beam B76 and the beam A74, and a synchronous wheel A is fixedly sleeved on the outer periphery of the front rotating shaft 72 and the shaft end of the power output shaft of the harvesting motor 91, and a synchronous belt A721 is commonly sleeved between the synchronous wheels A.

[0037] Specifically, when the power output shaft of the harvesting motor 91 rotates, the adjacent rotating shaft 72 can be rotated by the cooperation of the synchronous belt A721 and the synchronous wheel A, and the soybean stalks can enter the inner cavity of the harvesting platform A4 and the harvesting platform B5 under the action of the toggle rod 77.

[0038] Working principle: When the present invention is in use, the staff can control the movable seat 1 to move to the desired position, and can adjust the distance between the harvesting platform A4 and the harvesting platform B5 according to the desired harvesting area. When it is necessary to adjust the distance between the harvesting platform A4 and the harvesting platform B5, the staff can rotate the rocking wheel 85, and the threaded tube 82 fixed on the rocking wheel 85 can make the threaded rod 83 threadedly connected in the inner cavity of the threaded tube 82 push the fixed block 84 to move forward. With the cooperation of the L-shaped limit plate 61, the L-shaped connecting block 45 and the moving block 20, the harvesting platform B5 can be stably moved forward, which is suitable for mechanical harvesting of soybeans planted with flexible spacing on small plots in the southern hilly areas. When the harvesting platform B5 moves forward, the distance between the two vertical poles 95 increases, and with the cooperation of the synchronous belt B96, the sliding block 951 can slide forward. While the sliding block 951 slides forward, The telescopic rod 952 and the spring 953 can be stretched, and the harvesting area can be adjusted. When the power output shaft of the harvesting motor 91 rotates, the active bevel gear 93 fixed on the shaft end of the power output shaft of the harvesting motor 91 can rotate the driven bevel gear 94 meshing therewith. Under the action of the synchronous belt B96 and the synchronous wheel B, the synchronous belt B96 can be moved around a number of vertical poles 95. The soybean stalks can be harvested by using the harvesting knife B97 fixed on the synchronous belt B96 and the harvesting knife A10. When the power output shaft of the harvesting motor 91 rotates, the adjacent rotating shaft 72 can be rotated by using the synchronous belt A721 and the synchronous wheel A. Under the action of the toggle rod 77, the soybean stalks can enter the inner cavity of the harvesting platform A4 and the harvesting platform B5. With the cooperation of the spiral blade A43, the soybean stalks can enter the inner cavity of the conveying frame 2 through the screening frame 3, and the soybeans and the soybean stalks can be separated and collected.

[0039] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0040] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A crop harvesting device, comprising a movable seat (1) and a conveying frame (2) installed on the top of the movable seat (1) near the other side, a screening frame (3) is installed on the top of the movable seat (1) near the rear side, characterized in that: A harvesting platform A (4) is fixedly installed on one side of the mobile seat (1) near the rear side, a harvesting platform B (5) is arranged on the front side of the harvesting platform A (4), a moving block (20) is fixedly installed on the rear side of the harvesting platform B (5), and the bottom of the moving block (20) is slidably connected to the mobile seat (1), an adjustment component (8) is commonly arranged on the rear sides of the harvesting platform A (4) and the harvesting platform B (5), a toggle component (7) is commonly arranged on the tops of the harvesting platform A (4) and the harvesting platform B (5), and an L-shaped baffle A (6) is fixedly installed on the opposite sides of the harvesting platform A (4) and the harvesting platform B (5), A harvesting knife A (10) is fixedly mounted on one side of the L-shaped baffle A (6), and a harvesting assembly (9) is commonly arranged at the bottom of the L-shaped baffle A (6); the adjustment assembly (8) comprises a support block (81) fixedly mounted on the other side of the harvesting platform A (4) and a threaded tube (82) movably penetrating the support block (81); a rocker (85) is fixedly mounted on the rear end of the threaded tube (82); a threaded rod (83) is threadedly connected to the inner cavity of the threaded tube (82); a fixed block (84) is fixedly mounted on the front end of the threaded rod (83); and one side of the fixed block (84) is fixedly connected to the harvesting platform B (5).

2. A crop harvesting device according to claim 1, characterized in that: A conveying motor (41) is arranged at the rear side of the harvesting platform A (4) near the other side, and a support plate (42) is fixedly installed at the bottom of the conveying motor (41). The end of the power output shaft of the conveying motor (41) movably passes through the rear side of the inner cavity of the harvesting platform A (4). Two spiral blades A (43) are arranged on the opposite side of the harvesting platform A (4) and the harvesting platform B (5), and the front end of the spiral blade A (43) on the front side is rotatably connected to the front side of the inner cavity of the harvesting platform B (5), and the rear end of the spiral blade A (43) on the rear side is fixedly connected to the end of the power output shaft of the conveying motor (41).

3. A crop harvesting device according to claim 2, characterized in that: An insert (44) is fixedly mounted on the front end of the rear spiral blade A (43), a groove A is provided on the rear side of the front spiral blade A (43), and the front side of the insert (44) is movably plugged into the inner cavity of the groove A; an L-shaped connecting block (45) is fixedly mounted on the front side of the harvesting platform A (4), a groove B is provided on the rear side of the harvesting platform B (5), and the L-shaped connecting block (45) is movably plugged into the inner cavity of the groove B; an L-shaped limiting plate (61) is fixedly mounted on the front side of the L-shaped baffle A (6) on the rear side, a groove C is provided on the rear side of the L-shaped baffle A (6) on the front side, and the L-shaped limiting plate (61) is movably plugged into the inner cavity of the groove C.

4. The crop harvesting device according to claim 1, characterized in that: The harvesting assembly (9) comprises a harvesting motor (91) located at the front side of the harvesting platform B (5) and a mounting frame (92) fixedly mounted at the front side of the harvesting motor (91); the rear side of the mounting frame (92) is fixedly connected to the harvesting platform B (5); the end of the power output shaft of the harvesting motor (91) movably passes through the front side of the inner cavity of the harvesting platform B (5) and is fixedly mounted with a driving bevel gear (93); one side of the driving bevel gear (93) is meshed with a driven bevel gear (94); the harvesting platform A (4) and the harvesting platform B (5) are connected to each other. A plurality of vertical rods (95) are arranged at the bottom of the inner cavity of the platform B (5), and the top end of the vertical rod (95) on the other side passes through the top of the driven bevel gear (94), and the bottom ends of the vertical rods (95) on both sides are rotatably connected to the bottom of the inner cavity of the harvesting platform A (4) and the harvesting platform B (5), respectively. The outer peripheries of the vertical rods (95) are fixedly sleeved with synchronous wheels B, and the outer peripheries of the synchronous wheels B are jointly sleeved with synchronous belts B (96), and the outer sides of the synchronous belts B (96) are fixedly installed with a plurality of harvesting knives B (97).

5. The crop harvesting device according to claim 4, characterized in that: The bottom end of the vertical rod (95) located in the middle is rotatably connected to a sliding block (951), and the bottom end of the sliding block (951) is rotatably connected to the bottom of the inner cavity of the harvesting platform B (5). The sliding block (951) is fixedly installed on the rear side of the sliding block (951), and the rear end of the telescopic rod (952) is fixedly connected to the adjacent L-shaped baffle A (6). The outer peripheral movable sleeve of the telescopic rod (952) is provided with a spring (953), and the front and rear ends of the spring (953) are respectively fixedly connected to the sliding block (951) and the L-shaped baffle A (6).

6. The crop harvesting device according to claim 1, characterized in that: The toggle assembly (7) comprises a support frame (71) fixedly mounted on the top of the harvesting platform A (4) and the harvesting platform B (5) and a rotating shaft (72) movably penetrating the support frame (71); a disc (73) is fixedly mounted on the opposite end of the rotating shaft (72); a plurality of beams A (74) and a plurality of beams B (76) are fixedly mounted on the opposite side of the disc (73); a groove D is provided on the rear side of the front beam A (74); the inner cavity of the groove D is movably inserted into the rectangular bar (75); the rear side of the rectangular bar (75) is fixedly connected to the adjacent beam B (76); and a plurality of toggle rods (77) are fixedly mounted on the bottom of the beam B (76) and the beam A (74).

7. The crop harvesting device according to claim 6, characterized in that: The outer peripheries of the rotating shaft (72) and the power output shaft ends of the harvesting motor (91) are both fixedly sleeved with synchronous wheels A, and a synchronous belt A (721) is sleeved between the synchronous wheels A.

Images