Tractor

Abstract

The utility model provides a tractor which comprises a tractor body assembly, a seat, a multi-way valve, a first operating lever and a second operating lever. The seat is installed on the front face of the vehicle body assembly, and the multi-way valve is arranged on the back face of the vehicle body assembly and provided with a first valve rod and a second valve rod. The first operating rod is arranged on one side of the seat, and the first valve rod is controlled by the first operating rod; the first operating rod is arranged on the other side of the seat, and the second valve rod is controlled by the second operating rod. The multi-way valve is directly installed on the back face of the tractor body assembly, the first valve rod and the second valve rod which are used for controlling the tractor and have different functions are connected with the first control rod and the second control rod correspondingly, the first control rod and the second control rod are arranged on the two sides of the seat correspondingly, on one hand, the space on the two sides of the seat can be fully utilized, and on the other hand, the space is saved; the layout of the cab is optimized, especially for a small tractor, the effect is better, on the other hand, misoperation of a driver can be avoided, and the operation reliability of the whole tractor is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of tractors, and particularly relates to a tractor. Background Art

[0002] In the prior art, a multi-way valve of a tractor is arranged above a lift housing, and a lift control lever and a hydraulic output control lever are in transmission connection with the multi-way valve through a pull rod rotating shaft structure to realize the control of the multi-way valve. However, the transmission structure of the pull rod rotating shaft structure is relatively complex and the reliability is poor. At the same time, the lift control lever and the hydraulic output control lever are arranged on one side of the driver's cab, and the overall distribution is unreasonable, so that the operator is prone to misoperation.

[0003] Therefore, it is necessary to provide a tractor to overcome the defects existing above. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a tractor.

[0005] According to one aspect of the utility model, there is provided a tractor, comprising: a vehicle body assembly; a seat, the seat being installed on the front of the vehicle body assembly; a multi-way valve, the multi-way valve being arranged on the back of the vehicle body assembly, the multi-way valve being equipped with a first valve rod and a second valve rod; a first control lever, the first control lever being arranged on one side of the seat, and the first valve rod being controlled by the first control lever; a second control lever, the first control lever being arranged on the other side of the seat, and the second valve rod being controlled by the second control lever.

[0006] Preferably, the multi-way valve is located on the side close to the first control lever, the first valve rod faces the front side of the vehicle body assembly, and the first valve rod is directly connected with the first control lever. The second valve rod faces the back side of the vehicle body assembly, and the second valve rod is connected with the second control lever through a transmission mechanism.

[0007] Preferably, the first control lever is offset by a predetermined distance towards the side away from the second control lever, and the second control lever is offset by a predetermined distance towards the side away from the first control lever.

[0008] Preferably, a dust-proof cover is arranged at the connection between the first valve rod and the first control lever.

[0009] Preferably, the second control lever is rotatably installed on a support rotating shaft, and an integrally rotating rocker arm is arranged at the bottom of the second control lever.

[0010] Preferably, the transmission mechanism includes: a support sleeve; a transmission shaft, the transmission shaft including a connecting rod portion rotatably installed within the support sleeve and extending from the rocker arm to the second valve stem, with two integrally rotatable rotating portions provided at both ends of the connecting rod portion; two pull rods, one pull rod for connecting the rocker arm and the corresponding rotating portion, and the other pull rod for connecting the second valve and the corresponding rotating portion.

[0011] Preferably, the tractor further includes a lift housing disposed on the back of the body assembly and above the transmission housing. The lift housing includes a main body portion having an upper and lower window structure. The lower part of the main body portion is sealed and installed on the upper surface of the transmission housing, and the upper part of the main body portion is equipped with an upper cover plate. The main body portion, the upper surface of the transmission housing, and the upper cover plate form a closed cavity capable of accommodating hydraulic fluid.

[0012] Preferably, the lift housing further includes a lift arm mounting seat, the lift arm mounting seat including a support portion integrally provided on the rear end face of the lift housing and a sleeve portion provided on the support portion and the rear wall of the lift housing.

[0013] Preferably, the tractor further includes a first lift cylinder disposed behind the transmission, a first lift arm disposed above the first lift cylinder, a second lift cylinder disposed behind the transmission, and a second lift arm disposed above the second lift cylinder. The first lift arm and the second lift arm are respectively disposed at both ends of the sleeve portion.

[0014] Preferably, the tractor further includes a lift pump. The inlet of the lift pump is communicated with the oil suction port of the lift housing, the outlet of the lift pump is communicated with the multi-way valve, and the working oil ports of the multi-way valve are communicated with the first lift cylinder, the second lift cylinder, and the hydraulic output joint.

[0015] Compared with the prior art, the tractor provided by the present utility model has the following beneficial effects:

[0016] In the present invention, by directly installing the multi-way valve on the back of the body assembly and connecting the first valve stem and the second valve stem for controlling different functions of the tractor to the first control lever and the second control lever respectively, and the first control lever and the second control lever are respectively placed on both sides of the seat. On the one hand, it can make full use of the space on both sides of the seat and optimize the layout of the cab, especially for small tractors, the effect is better. On the other hand, it can avoid misoperation by the driver and improve the operating reliability of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model in detail with reference to the drawings and specific embodiments:

[0018] Figure 1 It is a schematic structural diagram of the tractor in the present utility model.

[0019] Figure 2 This is a schematic diagram showing the distribution of the first joystick and the second joystick in the present utility model.

[0020] Figure 3 This is a schematic diagram showing the structure of the transmission mechanism in the present utility model.

[0021] Figure 4 This is a schematic diagram showing the structure of the gearbox housing in the present utility model.

[0022] Description of reference numerals: 1, gearbox housing; 2, lift housing; 21, body part; 22, upper cover plate; 23, lift arm mounting seat; 231, support part; 232, sleeve part; 3, vehicle body assembly; 4, seat; 5, multi-way valve; 51, first valve stem; 52, second valve stem; 6, first joystick; 61, dust cover; 7, second joystick; 71, rocker arm; 72, transmission mechanism; 721, support sleeve; 722, transmission shaft; 7221, connecting rod part; 7222, rotating part; 723, pull rod; 81a, first lift cylinder; 82a, first lift arm; 81b, second lift cylinder; 82b, second lift arm; 83, lift pump; 84, oil filter. Detailed implementation manners

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] To make the drawings concise, only the parts related to the present utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, to make the drawings concise and easy to understand, in some drawings, parts with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means the situation of "more than one".

[0025] It should also be further understood that the term "and / or" used in the description of the present application and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0026] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", and "joined" 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, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0027] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation manners of this utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of this utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings and other implementation manners can be obtained.

[0029] See Figures 1 to 4 , this embodiment discloses a tractor, including: a body assembly 3, a seat 4, and a multi-way valve 5. For the convenience of describing this embodiment, the directions of the tractor in this embodiment are defined. When the user is sitting on the tractor on the ground, the direction the user faces is defined as the front, the direction the user backs is defined as the rear, the direction on the left hand side is defined as the left, the direction on the right hand side is defined as the right, the direction close to the ground is defined as the bottom, and the direction away from the ground is defined as the top.

[0030] The body assembly 3 includes various partitions for separating the cab and the transmission assembly at the bottom of the cab, such as the cab floor and the seat mounting plate. In this embodiment, the body assembly 3 mainly refers to the seat mounting plate. For the convenience of describing this embodiment, the side of the cab is defined as the front of the body assembly 3, and the side of the transmission assembly is defined as the rear of the body assembly 3.

[0031] The seat 4 is installed on the front of the body assembly 3, the multi-way valve 5 is arranged on the rear of the body assembly 3, and the multi-way valve 5 is equipped with a first valve stem 51 and a second valve stem 52. Among them, the first valve stem 51 is the valve core for controlling the lift reversing valve, and the second valve stem 52 is the valve core for controlling the hydraulic output reversing valve. The first control lever 6 is arranged on one side of the seat 4, preferably on the right side of the seat 4, and the first valve stem 51 is controlled by the first control lever 6. The second control lever 7 is arranged on the other side of the seat 4, preferably on the left side of the seat 4, and the second valve stem 52 is controlled by the second control lever 7.

[0032] In this embodiment, the multi-way valve 5 is directly mounted on the back of the vehicle body assembly 3, and the first valve stem 51 and the second valve stem 52 for controlling different functions of the tractor are respectively connected to the first control lever 6 and the second control lever 7, and the first control lever 6 and the second control lever 7 are respectively disposed on both sides of the seat 4. On the one hand, the space on both sides of the seat 4 can be fully utilized, optimizing the layout of the cab, especially for small tractors, with better effects. On the other hand, it can avoid misoperation by the driver and improve the operation reliability of the whole machine.

[0033] Refer to the appendix Figure 2 、 3 , the multi-way valve 5 is located on the side close to the first control lever 6, the first valve stem 51 faces the front side of the vehicle body assembly 3, and the first valve stem 51 is directly connected to the first control lever 6, and a dust cover 61 is provided at the connection between the first valve stem 51 and the first control lever 6. Connecting the lift connection of the multi-way valve 5 directly to the first control lever 6 has a simple structure, reduced cost, and reliable operation. Moreover, since the lift connection of the multi-way valve 5 is used more frequently, the first control lever 6 is arranged on the right side of the seat 4 for the convenience of the driver's operation.

[0034] Refer to the appendix Figure 2 、 3 , the second valve stem 52 faces the back side of the vehicle body assembly 3, the second control lever 7 is rotatably mounted on the support rotating shaft, the support bearing is located on the vehicle body assembly 3, and an integrally rotating rocker arm 71 is provided at the bottom of the second control lever 7, and the second valve stem 52 is connected to the rocker arm 71 through a transmission mechanism 72.

[0035] The transmission mechanism 72 includes: a support sleeve 721, a transmission shaft 722, and two pull rods 723. The support sleeve 721 is mounted on the back of the vehicle body assembly 3. The transmission shaft 722 includes a connecting rod portion 7221 rotatably mounted in the support sleeve 721 and extending from the rocker arm 71 to the second valve stem 52. Two integrally rotating rotating portions 7222 are provided at both ends of the connecting rod portion 7221. One pull rod 723 is used to connect the rocker arm 71 and the corresponding rotating portion 7222, and the other pull rod 723 is used to connect the valve stem of the multi-way valve 5 and the corresponding rotating portion 7222. When the driver operates the first control lever 6 to rotate along the support rotating shaft, through the transmission of the pull rod 723 and the transmission shaft 722, the synchronous rotation of the first valve stem 51 is realized, and further the control of the spool of the multi-way valve 5 is realized.

[0036] The first control lever 6 is offset a predetermined distance away from the second control lever 7, and the second control lever 7 is offset a predetermined distance away from the first control lever 6, so that the handle portions of the first control lever 6 and the second control lever 7 are respectively located on the left and right sides of the driver for the convenience of the driver's operation.

[0037] The tractor further includes a lift housing 2 disposed on the back of the body assembly 3 and above the transmission housing 1. In this embodiment, to improve the overall integration of the tractor, the lift housing 2 also functions as a lift fuel tank. The lift housing 2 includes a body portion 21 having an upper and lower window structure. The lower part of the body portion 21 is sealingly mounted on the upper surface of the transmission housing 1. The upper part of the body portion 21 is equipped with an upper cover plate 22. The body portion 21, the upper surface of the transmission housing 1, and the upper cover plate 22 form a closed cavity capable of accommodating hydraulic fluid, realizing independent oil supply for the lift system. Of course, for those skilled in the art, the lift housing 2 can also be of an existing structure.

[0038] The lift housing 2 further includes a lift arm mounting seat 23. The lift arm mounting seat 23 includes a support portion 231 integrally provided on the rear end face of the lift housing 2 and a sleeve portion 232 provided on the support portion 231 and the rear wall of the lift housing 2. The tractor further includes a first lift cylinder 81a disposed behind the transmission, a first lift arm 82a disposed above the first lift cylinder 81a, a second lift cylinder 81b disposed behind the transmission, and a second lift arm 82b disposed above the second lift cylinder 81b. The first lift arm 82a and the second lift arm 82b are respectively disposed at both ends of the sleeve portion 232.

[0039] The tractor further includes a lift pump 83. The inlet of the lift pump 83 is communicated with the oil suction port of the lift housing 2. A filter 84 is also provided between the lift pump 83 and the lift housing 2. The outlet of the lift pump 83 is communicated with the multi-way valve 5. The working oil ports of the multi-way valve 5 are communicated with the first lift cylinder 81a, the second lift cylinder 81b, and the hydraulic output joint.

[0040] It will be apparent to those skilled in the art that various modifications and variations can be made to the above exemplary embodiments of the present invention without departing from the spirit and scope of the present invention. Therefore, it is intended that the present invention cover modifications and variations that fall within the scope of the appended claims and their equivalent technical solutions.

Claims

1. A tractor, characterized in that: include: Body assembly; a seat, the seat being mounted on the front side of the vehicle body assembly; A multi-way valve, the multi-way valve is arranged on the back of the vehicle body assembly, and the multi-way valve is equipped with a first valve stem and a second valve stem; a first operating rod, the first operating rod being arranged at one side of the seat, and the first valve stem being controlled by the first operating rod; A second operating rod, the first operating rod is arranged on the other side of the seat, and the second valve stem is controlled by the second operating rod.

2. The tractor according to claim 1, characterized in that: The multi-way valve is located on a side close to the first operating rod, the first valve rod faces the front side of the vehicle body assembly, and the first valve rod is directly connected to the first operating rod, the second valve rod faces the back side of the vehicle body assembly, and the second valve rod is connected to the second operating rod through a transmission mechanism.

3. The tractor according to claim 2, characterized in that: The first joystick is offset toward a side away from the second joystick by a predetermined distance, and the second joystick is offset toward a side away from the first joystick by a predetermined distance.

4. The tractor according to claim 3, characterized in that: A dust cover is provided at the connection between the first valve stem and the first operating rod.

5. The tractor according to claim 3, characterized in that: The second operating lever is rotatably mounted on the supporting shaft, and an integrally rotatable rocker arm is arranged at the bottom of the second operating lever.

6. The tractor according to claim 5, characterized in that: The transmission mechanism comprises: Support sleeve; A transmission shaft, the transmission shaft comprising a connecting rod portion rotatably mounted in the supporting sleeve and extending from the rocker arm to the second valve stem, and two rotating portions rotating integrally are provided at both ends of the connecting rod portion; Two tie rods, one tie rod is used to connect the rocker arm and the corresponding rotating part, and the other tie rod is used to connect the second valve and the corresponding rotating part.

7. The tractor according to claim 1, characterized in that: The tractor also includes a lifter housing arranged on the back of the vehicle body assembly and located above the gearbox housing, the lifter housing includes a main body portion with upper and lower window structures, the lower portion of the main body portion is sealed and installed on the upper surface of the gearbox housing, the upper portion of the main body portion is equipped with an upper cover plate, and the main body portion, the upper surface of the gearbox housing and the upper cover plate form a closed cavity capable of accommodating hydraulic fluid.

8. The tractor according to claim 7, characterized in that: The lifter housing further comprises a lifter arm mounting seat, wherein the lifter arm mounting seat comprises a support portion integrally arranged on the rear end surface of the lifter housing and a sleeve portion arranged on the support portion and the rear wall of the lifter housing.

9. The tractor according to claim 8, characterized in that The tractor also includes a first lifting cylinder arranged behind the gearbox, a first lifting arm arranged above the first lifting cylinder, a second lifting cylinder arranged behind the gearbox, and a second lifting arm arranged above the second lifting cylinder, wherein the first lifting arm and the second lifting arm are respectively arranged at both ends of the sleeve part.

10. The tractor according to claim 9, characterized in that The tractor also includes a lifting pump, an oil inlet of the lifting pump is connected to the oil suction port of the lifter housing, an oil outlet of the lifting pump is connected to a multi-way valve, and a working oil port of the multi-way valve is connected to the first lifting cylinder, the second lifting cylinder and the hydraulic output joint.

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