Crawling ladder swinging structure of large combine harvester

Abstract

The utility model discloses a crawling ladder swing structure of a large combine harvester, which belongs to the field of agricultural equipment and comprises a vehicle body upper platform, a cab is arranged on the vehicle body upper platform, and a crawling ladder is arranged on one side of the cab. A fixing shaft is arranged on the side, close to the ladder stand, of the platform on the vehicle body, a rotating sleeve is rotationally connected to the fixing shaft in a sleeving mode, the side wall of the rotating sleeve is fixedly connected with the ladder stand through a plurality of connecting rods, a connecting plate is arranged on the rotating sleeve, and two positioning grooves are formed in the connecting plate and can limit the rotating angle of the rotating sleeve; a vertical connecting piece is arranged at the bottom of an upper platform of the vehicle body, a lever is hinged to the lower end of the vertical connecting piece, a fulcrum of the lever is arranged at the hinged position of the vertical connecting piece and the lever, a lower pressing plate and a lower pull rod are arranged above and below the end of a power arm of the lever respectively, and a positioning block protruding downwards is arranged at the end of a resisting arm of the lever and can be matched with the positioning groove. And an elastic piece is arranged above the end part of the resisting arm of the lever and enables the end part of the resisting arm to have a downward pressing trend. The structure can solve the influence of the crawling ladder on the overall width of the harvester.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery equipment field, concretely relates to a large -scale combine harvester ladder stand structure. BACKGROUND

[0002] The combine harvester needs to set up the ladder stand for the convenience of the driver operator to get in and out of the cab because the wheel is too big, and the ladder stand is often set up on the side of the combine harvester close to the cab position, for small combine harvester, its ladder stand is often shorter, and the overall size of its ladder stand has less influence on the width of the vehicle body, and the influence on the width of the vehicle body during driving can be solved through the ladder stand structure of the split type.

[0003] However, the above structure is not applicable to large combine harvesters, because the wheels of large combine harvesters are larger, so the height of the ladder stand is larger, and because the height is too high, using a vertical ladder can cause safety hazards, so large combine harvesters often use inclined ladders, which further increase the overall width of the vehicle body, making it impossible to enter many sites.

[0004] In view of the above problems, the utility model designs and manufactures a large combine harvester ladder stand structure to overcome the above defects. UTILITY MODEL CONTENTS

[0005] For the problems existing in the prior art, the large combine harvester ladder stand structure provided by the utility model can solve the influence of the ladder stand on the overall width of the combine harvester.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a large combine harvester ladder stand structure, comprising a vehicle body upper platform, a cab is arranged on the vehicle body upper platform, and a ladder stand is arranged on one side of the cab;

[0007] A fixed shaft is arranged on one side of the vehicle body upper platform close to the ladder stand, a limiting boss is arranged at the bottom of the fixed shaft, a rotating sleeve is rotatably connected to the fixed shaft on the limiting boss, the sidewall of the rotating sleeve is fixedly connected to the ladder stand through a plurality of connecting rods, and the ladder stand can rotate relative to the fixed shaft through the rotating sleeve;

[0008] A connecting plate is arranged on the rotating sleeve, a 1 / 4 ring groove is arranged on the connecting plate, a guide column is arranged at the bottom of the vehicle body upper platform, and the guide column can cooperate with the 1 / 4 ring groove to limit the rotation of the ladder stand around the fixed shaft by 90 degrees;

[0009] Two positioning grooves are arranged on the connecting plate, and the two positioning grooves are arranged at positions close to the two ends of the 1 / 4 ring groove, respectively;

[0010] The bottom of the platform on the vehicle body is provided with a vertical connecting piece, the lower end of the vertical connecting piece is hingedly connected with a lever, the fulcrum of the lever is arranged at the position where the vertical connecting piece is hingedly connected with the lever, the upper and lower sides of the power arm end of the lever are respectively provided with a pressing plate and a pull-down rod, the resistance arm end of the lever is provided with a downward protruding positioning block, the positioning block can be matched with a positioning groove, and an elastic piece is arranged above the resistance arm end of the lever.

[0011] Preferably, a guide vertical rod is arranged above the resistance arm end, a long slot hole is arranged on the platform on the vehicle body, the length direction of the long slot hole is consistent with the arrangement direction of the lever, and the upper end of the guide vertical rod penetrates through the long slot hole.

[0012] The elastic piece is a spring, the spring is sleeved on the guide vertical rod, and the two ends of the spring are respectively abutted against the bottom of the platform on the vehicle body and above the resistance arm end.

[0013] Preferably, when the positioning block on the resistance arm is matched with the positioning groove on the connecting plate, the lower side of the resistance arm end is abutted against the upper end face of the connecting plate.

[0014] Preferably, the upper end of the pressing plate is provided with a pedal, and the lower end of the pull-down rod is provided with a horizontal handle.

[0015] Preferably, an anti-interference groove is arranged on the platform on the vehicle body, and the pressing plate can penetrate through the anti-interference groove.

[0016] Preferably, when the positioning block is matched with the two positioning grooves, the ladders are respectively arranged on the side of the vehicle body of the combine harvester and the front side of a tire.

[0017] Preferably, the ladder is an inclined ladder, and handrails are arranged on the two sides of the inclined ladder.

[0018] Preferably, rubber plates are arranged above the pedals at the bottom of the ladder.

[0019] The utility model discloses the beneficial effect lies in:

[0020] 1. The utility model discloses a ladder that can swing, when needing to get in and out of the cab, the ladder is swung to the side of the vehicle body of the combine harvester, and when the combine harvester is running, the ladder is swung to the front side of a tire, so that the overall width of the combine harvester can be reduced, and the combine harvester is facilitated.

[0021] 2. The utility model discloses a guide column and a 1 / 4 ring groove, which can limit the ladder to rotate 90 degrees around the fixed shaft, and further utilize the cooperation of the positioning block and the positioning groove to ensure that the ladder can be positioned in the two limit positions, and the stability is improved.

[0022] 3. The upper and lower ends of the power arm of the lever of the utility model are respectively provided with a lower pressure plate and a lower pull rod, which ensures that the driver can operate the position of the ladder when getting on and off the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a schematic diagram of a large combine harvester ladder swing structure on a large combine harvester;

[0024] Figure 2 This is a schematic diagram of a large combine harvester ladder swing structure with a cab;

[0025] Figure 3 This is a schematic diagram of a ladder swing structure for a large combine harvester;

[0026] Figure 4 A schematic diagram showing the bottom structure of the upper platform of a large combine harvester ladder swing structure;

[0027] Figure 5 It is a partial schematic diagram of the upper platform of the vehicle body of the present invention from an upper perspective;

[0028] Figure 6 It is a partial schematic diagram of the utility model from the bottom perspective of the upper platform of the vehicle body.

[0029] In the figure: 1. Platform on the vehicle body; 2. Ladder; 3. Connecting rod; 4. Rotating sleeve; 5. Limiting boss; 6. Connecting plate; 7. 1 / 4 ring groove; 8. Guide column; 9. Vertical connecting piece; 10. Lever; 11. Guide vertical rod; 12. Spring; 13. Positioning block; 14. Positioning groove; 15. Lower pressure plate; 16. Lower pull rod; 17. Pedal; 18. Handle; 19. Cab; 20. Rubber plate; 21. Tire. DETAILED DESCRIPTION

[0030] In order to facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0031] like Figures 1 to 6 As shown, a large combine harvester ladder swing structure includes a vehicle body upper platform 1, a cab 19 is provided on the vehicle body upper platform 1, a ladder 2 is provided on one side of the cab 19, and the ladder 2 is preferably set as an inclined ladder 2, and handrails are provided on both sides of the inclined ladder 2.

[0032] A fixed shaft is provided on the platform 1 on the vehicle body near the ladder 2, and a limiting boss 5 is provided at the bottom of the fixed shaft. A rotating sleeve 4 is rotatably sleeved on the fixed shaft on the limiting boss 5. The side wall of the rotating sleeve 4 is fixedly connected to the ladder 2 through several connecting rods 3. The ladder 2 can rotate relative to the fixed shaft through the rotating sleeve 4.

[0033] The utility model discloses a can swing's ladder 2 is used, when needing to go in and out the cab 19, swing the ladder 2 to the vehicle body one side of combine harvester, and when combine harvester is driving, then swing the tire 21 front side of the ladder 2, like this can reduce the overall width of combine harvester, the convenience combine harvester.

[0034] The utility model discloses the connecting plate 6 is equipped on the rotating sleeve 4, the connecting plate 6 is equipped with 1 / 4 ring groove 7, the bottom of the vehicle body upper platform 1 is equipped with the guide column 8, the guide column 8 can be with 1 / 4 ring groove 7 cooperation and limit the ladder 2 around fixed axle rotation 90 °, the connecting plate 6 is equipped with two positioning slots 14, two positioning slots 14 are respectively arranged in the position close to 1 / 4 ring groove 7 both ends, above-mentioned structure utilizes guide column 8 and 1 / 4 ring groove 7, just can limit the ladder 2 around fixed axle rotation 90 °, further utilize positioning block 13 and positioning slot 14 cooperation, guaranteeed that the ladder 2 can be positioned in two limit positions, improved stability, specifically, positioning block 13 and two positioning slots 14 cooperation, the ladder 2 is located combine harvester's vehicle body one side and a tire 21 front side respectively.

[0035] The bottom of the vehicle body upper platform 1 is equipped with vertical connecting piece 9, the lower end of vertical connecting piece 9 is hinged with lever 10, the fulcrum of lever 10 is arranged at the position where vertical connecting piece 9 is hinged with lever 10, the upper and lower ends of the power arm end of lever 10 are respectively equipped with lower pressing plate 15 and lower pull rod 16, the resistance arm end of lever 10 is equipped with downward protruding positioning block 13, positioning block 13 can be matched with positioning slot 14, the upper end of the resistance arm end of lever 10 is equipped with elastic element, the elastic element makes the resistance arm end have the tendency of being pressed down, the utility model discloses that the upper and lower ends of the power arm end of lever 10 are respectively provided with lower pressing plate 15 and lower pull rod 16, which ensures that the driver can operate the position of the ladder 2 when getting on and off the vehicle.

[0036] The upper end of the resistance arm end of lever 10 is equipped with downward protruding positioning block 13, positioning block 13 can be matched with positioning slot 14, the upper end of the resistance arm end of lever 10 is equipped with elastic element, the elastic element makes the resistance arm end have the tendency of being pressed down, the utility model discloses that the upper and lower ends of the power arm end of lever 10 are respectively provided with lower pressing plate 15 and lower pull rod 16, which ensures that the driver can operate the position of the ladder 2 when getting on and off the vehicle.

[0037] The upper end of the resistance arm end of lever 10 is equipped with downward protruding positioning block 13, positioning block 13 can be matched with positioning slot 14, the upper end of the resistance arm end of lever 10 is equipped with elastic element, the elastic element makes the resistance arm end have the tendency of being pressed down, the utility model discloses that the upper and lower ends of the power arm end of lever 10 are respectively provided with lower pressing plate 15 and lower pull rod 16, which ensures that the driver can operate the position of the ladder 2 when getting on and off the vehicle.

[0038] The upper end of the resistance arm end of lever 10 is equipped with downward protruding positioning block 13, positioning block 13 can be matched with positioning slot 14, the upper end of the resistance arm end of lever 10 is equipped with elastic element, the elastic element makes the resistance arm end have the tendency of being pressed down, the utility model discloses that the upper and lower ends of the power arm end of lever 10 are respectively provided with lower pressing plate 15 and lower pull rod 16, which ensures that the driver can operate the position of the ladder 2 when getting on and off the vehicle.

[0039] The utility model discloses a platform 1 is equipped with the anti -interference groove on the car body, and the lower pressing plate 15 can pass through the anti -interference groove, avoids the interference of the lower pressing plate 15 and the car body platform 1.

[0040] In addition, the two sides above the bottom step 17 of the ladder 2 are preferably provided with rubber plates 20, which can reduce the damage to the ladder 2 by utilizing the elasticity of the rubber plates 20 when the ladder 2 encounters hard objects during swinging.

[0041] It should be understood that the use of these embodiments is only for the purpose of illustrating the utility model and is not intended to limit the scope of protection of the utility model. In addition, it should also be understood that after reading the technical content of the utility model, those skilled in the art can make various modifications, modifications and / or variations to the utility model, and all these equivalent forms also fall within the protection scope defined by the appended claims of the present application.

Claims

1. A large combine harvester ladderway oscillation structure, characterized by, Including the car body platform (1), the car body platform (1) is equipped with a cab (19), one side of the cab (19) is equipped with a ladder (2); The car body platform (1) is provided with a fixed shaft near one side of the ladder (2), the bottom of the fixed shaft is provided with a limiting boss (5), the fixed shaft on the limiting boss (5) is rotatably sleeved with a rotating sleeve (4), the side wall of the rotating sleeve (4) is fixedly connected with the ladder (2) through a plurality of connecting rods (3), and the ladder (2) can rotate relative to the fixed shaft through the rotating sleeve (4). The rotating sleeve (4) is provided with a connecting plate (6), the connecting plate (6) is provided with a 1 / 4 ring groove (7), the bottom of the car body platform (1) is provided with a guide column (8), and the guide column (8) can cooperate with the 1 / 4 ring groove (7) to limit the rotation of the ladder (2) around the fixed shaft by 90°. The connecting plate (6) is provided with two positioning grooves (14), and the two positioning grooves (14) are respectively arranged at positions close to both ends of the 1 / 4 ring groove (7). The bottom of the car body platform (1) is provided with a vertical connecting piece (9), the lower end of the vertical connecting piece (9) is hingedly connected with a lever (10), the fulcrum of the lever (10) is arranged at the position where the vertical connecting piece (9) is hingedly connected with the lever (10), the upper and lower ends of the power arm end of the lever (10) are respectively provided with a pressing plate (15) and a pull-down rod (16), the resistance arm end of the lever (10) is provided with a downwardly protruding positioning block (13), the positioning block (13) can cooperate with the positioning groove (14), and the resistance arm end of the lever (10) is provided with an elastic element above the resistance arm end.

2. A large combine harvester ladderway sway structure according to claim 1, characterized in that The resistance arm end is provided with a guide vertical rod (11), and the car body platform (1) is provided with a long slot hole, the length direction of the long slot hole is consistent with the arrangement direction of the lever (10), and the upper end of the guide vertical rod (11) penetrates through the long slot hole. The elastic element is a spring (12), the spring (12) is sleeved on the guide vertical rod (11), and the two ends of the spring (12) respectively abut against the bottom of the car body platform (1) and the upper end of the resistance arm end.

3. A large combine harvester ladderway sway structure according to claim 1, wherein When the positioning block (13) on the resistance arm cooperates with the positioning groove (14) on the connecting plate (6), the lower end of the resistance arm end abuts against the upper end surface of the connecting plate (6).

4. A large combine harvester ladderway sway structure according to claim 1 wherein, The upper end of the pressing plate (15) is provided with a pedal (17), and the lower end of the pull-down rod (16) is provided with a horizontal handle (18).

5. A large combine harvester ladderway sway structure according to claim 1 wherein, The car body platform (1) is provided with an anti-interference groove, and the pressing plate (15) can penetrate through the anti-interference groove.

6. A large combine harvester ladderway sway structure according to claim 1 wherein, When the positioning block (13) cooperates with the two positioning grooves (14), the ladder (2) is located at one side of the body of the combine harvester and the front side of one tire (21) respectively.

7. A large combine harvester ladderway sway structure according to claim 1 wherein, The ladder (2) is a inclined ladder (2), and the two sides of the inclined ladder (2) are provided with handrails.

8. A large combine harvester ladderway sway structure according to claim 1 wherein, The two sides above the pedal (17) at the bottom of the ladder (2) are rubber plates (20).

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