Operating rod mechanism for tractor cab with small space

Abstract

The utility model discloses an operating lever mechanism for a tractor cab with smaller space, which comprises a seat, handles are arranged on two sides of the seat, the handle close to one side of a control valve is connected with a valve core through a first connecting rod mechanism, and the handle far away from one side of the control valve is connected with the valve core through a second connecting rod mechanism. The second connecting rod mechanism comprises a rotating shaft, a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod, the rotating shaft is rotationally connected in a mounting seat, the mounting seat is fixed on a cab bottom plate, a handle is fixed at one end of the rotating shaft, and the other end of the rotating shaft is fixedly connected with one end of the first connecting rod; the other end of the first connecting rod is hinged to the hinged end of the second connecting rod, one end of the second connecting rod is hinged to one end of the third connecting rod, the middle section of the third connecting rod is hinged to the rack, the other end of the third connecting rod is hinged to one end of the fourth connecting rod, and the other end of the fourth connecting rod is connected with a valve element of the control valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of joystick mechanism for the tractor cab of smaller space. BACKGROUND

[0002] Tractor is used for traction and driving operation machine to complete various mobile operations. It can also be used as fixed operation power. It is composed of engine, transmission, running, steering, hydraulic suspension, power output, electrical instruments, driving control and traction system or device. The power of engine is transmitted to driving wheel by transmission system to make tractor run. In real life, common rubber belt is used as power transmission medium. According to function and use, it is divided into agricultural, industrial and special purpose tractors. According to structure type, it is divided into wheeled, tracked, boat-shaped tractor and self-propelled chassis.

[0003] Hydraulic valve is widely used in modern tractor. It can be used to control power output, implement lifting and other traditional manual control occasions in hydraulic system. At present, some domestic tractors have relatively narrow wheelbase and small operating space, but users have diversified needs, and some need to be equipped with three hydraulic outputs. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at solving the above problems of prior art, and provides a kind of joystick mechanism for the tractor cab of smaller space.

[0005] A kind of joystick mechanism for the tractor cab of smaller space, including seat, the seat both sides are equipped with handle, the handle of one side close to control valve is connected with valve core by first connecting rod mechanism, the handle of one side far from control valve is connected with valve core by second connecting rod mechanism, the second connecting rod mechanism includes rotating shaft, first connecting rod, second connecting rod, third connecting rod, fourth connecting rod,

[0006] The rotating shaft is rotatably connected in mounting seat, the mounting seat is fixed on the bottom plate of cab, the rotating shaft is fixed with handle at one end, and the other end is fixedly connected with the one end of first connecting rod, the other end of first connecting rod is hingedly connected with the one end of second connecting rod, the one end of second connecting rod is hingedly connected with the one end of third connecting rod, the middle segment of third connecting rod is hingedly connected on control valve support, the other end of third connecting rod is hingedly connected with the one end of fourth connecting rod, and the other end of fourth connecting rod is connected with the valve core of control valve.

[0007] Further, the third connecting rod is a rocker arm structure, and the hinged point with the frame is located at the middle of the rocker arm.

[0008] Further, the handle is perpendicular to the rotating shaft, and the end of handle is welded with the outer side of rotating shaft.

[0009] Furthermore, the mounting base includes a bushing and a support, both of which are fixed to the cab floor by welding.

[0010] Furthermore, the handle head is provided with a ball-shaped grip.

[0011] Beneficial effects: Compared with the prior art, this utility model utilizes the space on the other side of the driver's seat and uses a corresponding linkage mechanism to enable the handle far from the control valve to operate the valve core, thereby switching the working state of the control valve, which can make full use of the space in the driver's cab. Attached Figure Description

[0012] Fig. 1 This is a schematic diagram of a joystick mechanism for use in a tractor cab with limited space.

[0013] Fig. 2 This is a schematic diagram of the second linkage mechanism;

[0014] In the diagram, 1 is the seat, 2 is the handle, 3 is the bushing, 4 is the rotating shaft, 5 is the support, 6 is the control valve, 7 is the first connecting rod, 8 is the second connecting rod, 9 is the third connecting rod, and 10 is the fourth connecting rod. Detailed Implementation

[0015] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0016] like Figs. 1-2 As shown, the components are: seat 1, handle 2, bushing 3, rotating shaft 4, support 5, control valve 6, first connecting rod 7, second connecting rod 8, third connecting rod 9, and fourth connecting rod 10.

[0017] A control lever mechanism for a tractor cab with limited space includes a seat 1. Handles 2 are provided on both sides of the seat 1. The handle 2 closer to the control valve 6 is connected to the valve core via a first linkage mechanism, and the handle 2 further away from the control valve 6 is connected to the valve core via a second linkage mechanism. The second linkage mechanism includes a rotating shaft 4, a first connecting rod 7, a second connecting rod 8, a third connecting rod 9, and a fourth connecting rod 10.

[0018] The rotating shaft 4 is rotatably connected in the mounting base, the mounting base is fixed on the floor of the cab, one end of the rotating shaft is fixed with the handle 2, the other end of the rotating shaft is fixedly connected with one end of the first connecting rod 7, the other end of the first connecting rod 7 is hingedly connected with one end of the second connecting rod 8, one end of the second connecting rod 8 is hingedly connected with one end of the third connecting rod 9, the middle section of the third connecting rod 9 is hingedly connected on the frame, the other end of the third connecting rod 9 is hingedly connected with one end of the fourth connecting rod 10, the other end of the fourth connecting rod 10 is connected with the spool of the control valve 6.

[0019] Further, the third connecting rod 9 is a rocker arm structure, and the hinged point of the rocker arm structure with the frame is located at the middle of the rocker arm.

[0020] Further, the handle 2 is perpendicular to the rotating shaft 4, and the end of the handle 2 is welded with the outer side of the rotating shaft 4.

[0021] Further, the mounting base comprises the bushing 3 and the support 5, and the bushing 3 and the support 5 are fixed on the floor of the cab by welding.

[0022] Further, the head of the handle 2 is provided with a spherical grip.

[0023] Usage: pull the handle 2 to drive the rotating shaft 4 to rotate, so as to drive the first connecting rod 7 to rotate, and then pull the second connecting plate at the other end, the second connecting plate drives the third connecting plate to rotate around the hinged point, and then drives the fourth connecting rod 10, and then controls the spool of the control valve 6.

[0024] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A joystick mechanism for a tractor cab of limited space, characterised in that, The seat is provided with handles on both sides, the handle near the control valve is connected with the valve core through a first connecting rod mechanism, and the handle far from the control valve is connected with the valve core through a second connecting rod mechanism, The rotating shaft is rotatably connected in a mounting base, the mounting base is fixed on the floor of the cab, one end of the rotating shaft is fixed with a handle, the other end of the rotating shaft is fixedly connected with one end of a first connecting rod, the other end of the first connecting rod is hingedly connected with one end of a second connecting rod, one end of the second connecting rod is hingedly connected with one end of a third connecting rod, the middle section of the third connecting rod is hingedly connected on a control valve support, the other end of the third connecting rod is hingedly connected with one end of a fourth connecting rod, and the other end of the fourth connecting rod is connected with the valve core of the control valve.

2. A joystick mechanism for a tractor cab having a small space according to claim 1, wherein The third connecting rod is an L-shaped rocker arm structure, and the hinged point of the third connecting rod with the frame is located at the middle of the rocker arm.

3. A joystick mechanism for a tractor cab having a small space according to claim 1, wherein The handle is perpendicular to the rotating shaft, and the end of the handle is welded with the outer side of the rotating shaft.

4. A joystick mechanism for a tractor cab having a small space according to claim 1, wherein The mounting base comprises a bushing and a support, and the bushing and the support are fixed on the floor of the cab by welding.

5. A joystick mechanism for use in a tractor cab having a small space according to claim 1, wherein The handle head is provided with a spherical grip.

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