Handrail device of tractor cabin cover

Abstract

The utility model discloses a tractor cabin cover handrail device, which relates to the field of tractor auxiliary equipment, and comprises two fixed rods which are arranged on the upper end surface of a cabin cover and are symmetrically arranged by taking the central axis of the cabin cover as the center, the fixed rods are arranged along the length direction of the cabin cover, and rotatable movable rods are arranged in the fixed rods. A movable cavity matched with the movable rod is formed in the fixed rod, and the movable rod is rotationally mounted in the movable cavity; a force arm structure is formed through rotation of the movable rod. By arranging the handrail structure composed of the fixed rod and the movable rod, a force arm is formed through rotation of the movable rod, so that force needed for upwards lifting the engine room cover is saved, the rotating point of the movable rod is movable, the rotating angle of the movable rod is variable, and the length of the force arm of the movable rod is variable; the problem that labor is wasted due to the fact that a force arm is too short in the initial stage of lifting the engine room cover is solved in multiple aspects.

Description

Technical Field

[0001] The utility model relates to the field of tractor auxiliary equipment, in particular to a tractor cabin cover handrail device. Background Art

[0002] During the use of agricultural machinery such as tractors, the cabin cover is used to protect the internal mechanical equipment and electrical components. When the equipment in the cabin needs to be maintained or inspected, it is usually necessary to open the cabin cover. In the existing tractor cabin cover design, an armrest device is usually provided for grasping and lifting the cabin cover upward when opening the cabin cover. However, when the lock is damaged or other failures occur, the operator needs to manually lift the cabin cover with the armrest, which often requires a large force, especially for heavier cabin covers. The operation is very laborious. Based on this, we propose a tractor cabin cover armrest device. Utility Model Content

[0003] In order to solve the technical problems existing in the above-mentioned prior art, the utility model provides a tractor cabin cover handrail device.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tractor cabin cover armrest device, comprising two fixed rods installed on the upper end surface of the cabin cover and symmetrically arranged with the central axis of the cabin cover as the center, the fixed rods are arranged along the length direction of the cabin cover, a rotatable movable rod is installed inside the fixed rod, an movable cavity adapted to the movable rod is opened inside the fixed rod, and the movable rod is rotatably installed in the movable cavity; a force arm structure is formed by the rotation of the movable rod.

[0005] Preferably, an upper opening groove is formed at the upper end of the fixing rod, and a lower opening groove is formed at the lower end of the fixing rod, and both the lower opening groove and the upper opening groove are communicated with the movable cavity.

[0006] Preferably, a through limiting groove is provided at the front end of the fixed rod, and the hinge point of the movable rod is slidably assembled in the limiting groove.

[0007] Preferably, the movable rod is composed of a supporting part, a rotating part and a force arm part which are linearly spliced ​​in sequence, and the supporting part is threadedly connected to the rotating part through a screw part; a guide block is installed at a position on the outer circumference of the rotating part corresponding to the limit groove, and the guide block is slidably assembled in the limit groove; the force arm part is composed of a plurality of segmented short rods, and the distance between two adjacent segmented short rods is adjustable.

[0008] Preferably, two adjacent segmented short rods are connected by a screw rod.

[0009] Preferably, an arc-shaped connecting rod is installed between the two movable rods, the arc-shaped connecting rod is connected to the force arm part through a rotating shaft, and the rotating shaft is movably installed inside the force arm part.

[0010] Preferably, a rubber sleeve is sleeved on the circumferential surface of the arc-shaped connecting rod.

[0011] Compared with the prior art, the utility model provides a tractor cabin cover armrest device, which has the following beneficial effects:

[0012] (1) The fixed rod and the movable rod form an armrest structure. When the engine cover cannot be opened normally, the fixed rod remains stationary to provide stable support, while the movable rod can rotate relative to the fixed rod. Through the rotation of the movable rod, a lever arm structure is formed, allowing the operator to use the lever arm principle when lifting the engine cover, significantly reducing the force required.

[0013] (2) The movable rod can not only rotate around a fixed point, but also move its rotation point along the limit groove. The movement of the rotation point allows the length of the lever arm to be dynamically adjusted during the lifting process. This design not only solves the problem of effort caused by the short lever arm in the initial stage of lifting the cabin cover, but also ensures that the force is more uniform during the entire lifting process by adjusting the length of the lever arm, thereby further reducing the difficulty of operation.

[0014] (3) The length of the end of the movable rod is adjustable, thereby realizing the adjustment of the rotation angle of the movable rod, so that the rotation of the movable rod is adapted to operators of different heights, thereby improving the applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 Schematic diagram of the structure of the entire tractor cabin cover handrail device in the embodiment;

[0017] Figure 2 It is a structural schematic diagram of the movable rod in the embodiment in a first tilted state;

[0018] Figure 3 is a structural schematic diagram of the movable rod in the embodiment in the second tilting state;

[0019] Figure 4 It is a schematic diagram of a partial cross-sectional structure of a fixing rod in an embodiment;

[0020] Figure 5 Schematic diagram of the explosion of the movable rod in the embodiment.

[0021] In the figure: 1. engine cover; 2. fixing rod; 21. movable cavity; 22. limiting groove; 23. lower opening groove; 24. upper opening groove; 3. movable rod; 31. rotating part; 311. guide block; 32. abutting part; 321. screw part; 33. force arm part; 331. segmented short rod; 4. connecting rod; 5. arc connecting rod; 51. rubber sleeve; 52. rotating shaft. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, rather than all the embodiments. The components of the embodiment of the utility model generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiment of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiment of the utility model. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the utility model.

[0023] This embodiment provides a tractor cabin cover armrest device, such as Figures 1 to 5 As shown, it includes two fixing rods 2 installed on the upper end surface of the engine compartment cover 1 and symmetrically arranged with the central axis of the engine compartment cover 1 as the center. The fixing rods 2 are arranged along the length direction of the engine compartment cover 1. In this embodiment, the fixing rods 2 are fixedly connected to the engine compartment cover 1 through a plurality of connecting rods 4, and in the vertical plane, the fixing rods 2 are located on the outside of the engine compartment cover 1, which can play a certain protective role on the engine compartment cover 1. When the engine compartment cover 1 collides with foreign objects, the deformation of the fixing rods 2 is used to absorb part of the impact force, thereby achieving the purpose of protecting the engine compartment cover 1; in the actual use of the tractor, the lock of the engine compartment cover 1 is often subjected to mechanical pressure The deformation may affect the normal function of the lock and even make the engine cover 1 unable to be opened normally. At this time, the engine cover 1 is lifted upward by grasping the fixed rod 2 to open the engine cover 1. In order to save the force required to lift the engine cover 1 upward, a rotatable movable rod 3 is installed inside the fixed rod 2. When in use, the fixed rod 2 remains stationary to provide stable support, while the movable rod 3 can rotate relative to the engine cover 1. Through the rotation of the movable rod 3, a lever arm structure is formed, so that the operator can use the lever arm principle when lifting the engine cover 1, which significantly reduces the required force.

[0024] In addition, the movable rod 3 needs to be rotated only when the engine cover 1 is in a state where it cannot be opened normally due to a malfunction. When the engine cover 1 is in a normal state, in order to prevent the movable rod 3 from affecting the aesthetic appearance of the engine cover 1, the movable rod 3 is hidden inside the fixed rod 2. Specifically, an movable cavity 21 adapted to the movable rod 3 is provided inside the fixed rod 2. In a normal state, the movable rod 3 is in the movable cavity 21, thereby achieving a hiding effect of the movable rod 3. When the movable rod 3 is in a state where it cannot be opened due to a malfunction, the movable rod 3 can be flipped upward so that one end of the movable rod 3 rests on the engine cover 1, and the operator holds the other end with the help of the lever arm structure to achieve the upward lifting operation of the engine cover 1.

[0025] In order to ensure that the movable rod 3 can achieve a rotation effect within the fixed rod 2, an upper opening groove 24 is opened at the upper end of the fixed rod 2, and a lower opening groove 23 is opened at the lower end of the fixed rod 2. Both the lower opening groove 23 and the upper opening groove 24 are communicated with the movable cavity 21; when the movable rod 3 rotates, the end portion of the movable rod 3 passes through the lower opening groove 23 and contacts the engine cover 1, and the head end portion of the movable rod 3 passes through the upper opening groove 24 and moves to the top of the engine cover 1.

[0026] On the basis of the above scheme, if the rotation point of the movable rod 3 is fixed, it will cause the force arm structure to be fixed, which may have certain requirements on the physical strength of the operator. For this reason, we have opened a through limit groove 22 at the front end of the fixed rod 2, and the hinge point of the movable rod 3 is slidably assembled in the limit groove 22 to achieve the purpose of movable rotation point of the fixed rod 2. The movement of the rotation point can optimize the mechanical properties of the armrest device, making the opening process of the cabin cover smoother, reducing the dependence on the physical strength of the operator, and improving the convenience of operation.

[0027] Similarly, in order to further optimize the arm structure of the movable rod 3, in this embodiment, the movable rod 3 is composed of a supporting portion 32, a rotating portion 31 and a force arm portion 33 which are linearly spliced ​​in sequence. The supporting portion 32 is threadedly connected with the rotating portion 31 through a screw portion 321. By rotating the supporting portion 32, the distance between the supporting portion 32 and the rotating portion 31 can be changed, thereby changing the rotation angle of the movable rod 3. That is, the longer the distance between the supporting portion 32 and the rotating portion 31, the smaller the maximum rotation angle of the movable rod 3, so that the rotation angle of the movable rod 3 is adapted to operators of different heights. A guide block 311 is installed at a position on the outer circumference of the rotating part 31 corresponding to the limit groove 22, and the guide block 311 is slidably assembled in the limit groove 22; the force arm part 33 is composed of a plurality of segmented short rods 331, and the distance between two adjacent segmented short rods 331 is adjustable. In this embodiment, two adjacent segmented short rods 331 are connected by a screw rod, and the length of the entire force arm part 33 can be changed by adjusting the distance between two adjacent segmented short rods 331. The larger the distance between two adjacent segmented short rods 331, the longer the length of the force arm part 33, that is, the longer the force arm, the more labor-saving.

[0028] In order to further improve the stability when applying force to the movable rod 3, we install an arc-shaped connecting rod 5 between the two movable rods 3. By lifting the arc-shaped connecting rod 5 upward, the two movable rods 3 can be rotated upward at the same time; in order to alleviate the skin pain caused by the reaction force exerted by the arc-shaped connecting rod 5 on the operator, we cover the circumferential surface of the arc-shaped connecting rod 5 with a rubber sleeve 51.

[0029] It should be noted that, in order to ensure that the force arm portion 33 can rotate, the arc-shaped connecting rod 5 is connected to the force arm portion 33 via a rotating shaft 52 , and the rotating shaft 52 is movably installed inside the force arm portion 33 .

[0030] In the description of the present invention, the terms "first", "second", "another", and "yet another" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0031] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise specified, the meaning of "plurality" is two or more.

[0032] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A tractor cabin cover handrail device, comprising two fixing rods (2) mounted on the upper end surface of the cabin cover (1) and symmetrically arranged with the central axis of the cabin cover (1) as the center, the fixing rods (2) being arranged along the length direction of the cabin cover (1), characterized in that: A rotatable movable rod (3) is installed inside the fixed rod (2), and a movable cavity (21) adapted to the movable rod (3) is provided inside the fixed rod (2). The movable rod (3) is rotatably installed in the movable cavity (21); a force arm structure is formed by the rotation of the movable rod (3).

2. A tractor cabin cover handrail device according to claim 1, characterized in that: An upper opening groove (24) is formed at the upper end of the fixing rod (2), and a lower opening groove (23) is formed at the lower end of the fixing rod (2). Both the lower opening groove (23) and the upper opening groove (24) are in communication with the movable cavity (21).

3. The tractor cabin cover armrest device according to claim 1, characterized in that: A through limiting groove (22) is formed at the front end of the fixed rod (2), and the hinge point of the movable rod (3) is slidably assembled in the limiting groove (22).

4. The tractor cabin cover armrest device according to claim 1, characterized in that: The movable rod (3) is composed of a supporting portion (32), a rotating portion (31) and a force arm portion (33) which are linearly spliced ​​in sequence. The supporting portion (32) is threadedly connected to the rotating portion (31) through a screw portion (321). A guide block (311) is installed at a position of the outer circumferential surface of the rotating portion (31) corresponding to the limit groove (22). The guide block (311) is slidably assembled in the limit groove (22). The force arm portion (33) is composed of a plurality of segmented short rods (331) spliced ​​together, and the distance between two adjacent segmented short rods (331) is adjustable.

5. A tractor cabin cover handrail device according to claim 4, characterized in that: Two adjacent segmented short rods (331) are connected via a screw rod.

6. A tractor cabin cover handrail device according to claim 4, characterized in that: An arc-shaped connecting rod (5) is installed between the two movable rods (3); the arc-shaped connecting rod (5) is connected to the force arm portion (33) via a rotating shaft (52); and the rotating shaft (52) is movably installed inside the force arm portion (33).

7. A tractor cabin cover handrail device according to claim 6, characterized in that: A rubber sleeve (51) is sleeved on the circumferential surface of the arc-shaped connecting rod (5).

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