CN214533762U

CN214533762U - Tractor

Info

Publication number: CN214533762U
Application number: CN202120345851.5U
Authority: CN
Inventors: 许峰; 刘振; 索峰
Original assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Current assignee: Jiangsu Changfa Agricultural Equipment Co Ltd
Priority date: 2021-02-05
Filing date: 2021-02-05
Publication date: 2021-10-29
Anticipated expiration: 2031-02-05

Abstract

The utility model provides a tractor, including gearbox, raiser casing, seat and choke valve. The lifter shell is arranged at the upper end of the gearbox; the seat is disposed above the riser housing; the throttle valve is disposed on the riser housing, the throttle valve including an adjustment handle, the adjustment handle being located below the seat. The utility model discloses a with the choke valve setting on the lifting mechanism casing of seat below, then adjustment handle is located the below of seat, makes things convenient for the operator just can adjust the aperture of throttle valve on the seat.

Description

Tractor

Technical Field

The utility model relates to a tractor, in particular to a tractor with a throttle valve.

Background

In the prior art, the shunt block is fixed at the rear end of a gearbox of a tractor in an assembling mode, the throttle valve is arranged on the shunt block, and when an operator needs to adjust the opening of the throttle valve to control the descending speed of the machine tool, the operator needs to get off the vehicle for adjustment, so that the operation is inconvenient. Therefore, there is a need for a tractor having a throttle under the seat to overcome the above-mentioned disadvantages.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a tractor convenient to adjust throttle valve opening.

According to an aspect of the present invention, there is provided a tractor, comprising:

a gearbox;

the lifter shell is arranged at the upper end of the gearbox;

a seat disposed above the riser housing;

a throttle valve disposed on the riser housing, the throttle valve including an adjustment handle located below the seat.

Preferably, the lifter casing includes main part, branch stream block, manipulation support mounting portion and oil return opening, the main part sets up to the gearbox upper end cover, branch stream block and manipulation support mounting portion establish the front portion at the main part, the oil return opening is established and is divided between stream block and the manipulation support mounting portion.

Preferably, the flow distribution block is arranged at the right front part of the lifter shell, a first oil port is formed in the front end of the flow distribution block, the throttle valve is communicated with the first oil port, and the adjusting handle is located in the axial front of the first oil port and located at the right lower part of the seat.

Preferably, the diverter block and the control bracket mounting portion are integrally arranged on the lifter housing.

Preferably, the lifter housing further includes a first lift arm mounting portion disposed at a rear portion of the body portion and a second lift arm mounting portion disposed at a rear portion of the body portion, the first lift arm mounting portion including a first support portion and a first sleeve disposed on the first support portion, the second lift arm mounting portion including a second support portion and a second sleeve disposed on the second support portion.

Preferably, the axis of the first sleeve is parallel to the upper end surface of the main body part of the lifter housing, the axis of the second sleeve is parallel to the upper end surface of the main body part of the lifter housing, and the axis of the first sleeve and the axis of the second sleeve coincide.

Preferably, the tractor further comprises 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 is connected with the first sleeve, and the second lifting arm is connected with the second sleeve.

Preferably, the first support portion extends forward and is connected to the operating bracket mounting portion, and the second support portion extends forward and is connected to the diverter block.

Preferably, the tractor still includes the elevator pump, connects oil filter and the multiple unit valve of setting on the gearbox right side of inhaling between elevator pump and gearbox, the multiple unit valve communicates with the choke valve, the elevator pump communicates with the multiple unit valve.

Preferably, the first lifting cylinder comprises a first small cavity and a first large cavity, the second lifting cylinder comprises a second small cavity and a second large cavity, and the flow dividing block further comprises a second oil port communicated with the first large cavity, a third oil port communicated with the second large cavity, a sixth oil port communicated with the first small cavity, a fifth oil port communicated with the second small cavity and a fourth oil port communicated with the multi-way valve.

Compared with the prior art, the utility model provides a tractor has following beneficial effect:

the throttle valve is arranged on the lifter shell below the seat, and the adjusting handle is positioned below the seat, so that an operator can conveniently adjust the opening of the throttle valve on the seat.

Drawings

The invention will be described in further detail with reference to the following drawings and embodiments:

FIG. 1 is a perspective view of the transmission and seat assembly of the present invention;

FIG. 2 is a front view of the transmission and seat assembly of the present invention;

FIG. 3 is a right side view of the transmission and seat assembly of the present invention;

fig. 4 is a perspective view of a portion of the components of the tractor of the present invention;

fig. 5 is a top view of a portion of the components of the tractor of the present invention;

fig. 6 is a left side view of a portion of the components of the tractor of the present invention;

fig. 7 is a perspective view of a riser housing of the present invention;

fig. 8 is a perspective view of another perspective view of the lifter case of the present invention.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

For the sake of simplicity, only the parts relevant to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In order to more clearly illustrate embodiments of the present invention or technical solutions in the prior art, specific embodiments of the present invention will be described below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be obtained from these drawings without inventive effort.

Referring to fig. 1 to 8, the utility model discloses a tractor, including gearbox 3, locate the riser casing 1 of gearbox 3 top and locate the seat 8 of riser casing 1 top. The gearbox 3 doubles as a hydraulic oil tank. The lifter housing 1 includes a main body portion 11 disposed at the bottom, and the main body portion 11 also serves as an upper end cover of the transmission case 3 and is fixed to the upper end of the transmission case 3 by bolts. The utility model discloses in, definition tractor advancing direction is preceding. The hoist housing 1 further includes a diverting block 12 integrally provided at a right portion of the front end of the main body portion 11 and a manipulating bracket mounting portion 13 integrally provided at a left portion of the front end of the main body portion 11. In other embodiments, diverter block 12 and steering bracket mount 13 may be secured to riser housing 1 by post-assembly.

An oil return port 14 is provided between the diversion block 12 and the operation bracket mounting portion 13. Diverter block 12 includes a first diverter fluid 127 disposed adjacent to and a second diverter fluid 128 disposed integrally with first diverter fluid 127. The side of the first partial flow 127 and the side of the second partial flow 128 are connected together. In other embodiments, the side of the first component fluid 127 and the side of the second component fluid 128 may be non-contiguous. The first sub-fluid 127 includes a first port 121 disposed at the front end, a second port 122 disposed at the top end, and a third port 123 disposed at the right end, and the third port 123 is located below the second port 122. The second sub-fluid 128 includes a fourth port 124 at the top end, a fifth port 125 at the right end, and a sixth port 126 at the right end. The second port 122 is located forward of the fourth port 124 and adjacent to the first port 121. The fifth port 125 is located below the fourth port 124, and the sixth port 126 is located below the fifth port 125. The first oil port 121, the second oil port 122 and the third oil port 123 are communicated to form a first oil passage 1201, and the first oil passage 1201 is disposed in the first fluid branch 127. The fourth oil port 124, the fifth oil port 125 and the sixth oil port 126 are communicated to form a second oil passage 1202, the second oil passage 1202 is provided in the second branch fluid 128, and the first oil passage 1201 and the second oil passage 1202 are provided independently of each other. The first oil passage 127 and the second oil passage 128 function as a flow dividing and merging. During lift, first oil passage 127 functions as a flow split and second oil passage 128 functions as a flow merge. During descent, the second oil passage 128 functions as a branch, and the first oil passage 127 functions as a merge.

The first lift arm attachment portion 15 and the second lift arm attachment portion 16 are symmetrically provided on both left and right sides of the rear end of the hoist case 1. The first lift arm mounting portion 15 includes a first support portion 152 provided perpendicular to the body portion 11 and a first sleeve 151 provided on the first support portion 152, the second lift arm mounting portion 16 includes a second support portion 162 provided perpendicular to the body portion 11 and a second sleeve 161 provided on the second support portion 162, the first support portion 152 and the second support portion 162 are provided in parallel, an axis of the first sleeve 151 is parallel to the body portion 11 and perpendicular to the first support portion 152, an axis of the second sleeve 161 is parallel to the body portion 11 and perpendicular to the second support portion 162, and an axis of the first sleeve 151 and an axis of the second sleeve 161 coincide.

Referring to fig. 4, 5 and 6, a first lift cylinder 6 is provided on the left side behind the transmission case 3, and a second lift cylinder 7 is provided on the right side behind the transmission case 3. The first lift cylinder 6 includes a first small chamber 63 and a first large chamber 62, and the second lift cylinder 7 includes a second small chamber 73 and a second large chamber 72. The first sleeve 151 is connected to a first lifting arm 61, and the first lifting arm 61 is connected to a piston rod (not numbered) in a first small chamber 63. The second sleeve 161 is connected to the second lifting arm 71, and the second lifting arm 71 is connected to a piston rod (not numbered) in the second small chamber 73. The second port 122 of the diverting block 12 is connected to the first large chamber 62 of the first lift cylinder 6, the third port 123 is connected to the second large chamber 72 of the second lift cylinder 7, the sixth port 126 is connected to the first small chamber 63 of the first lift cylinder 6, and the fifth port 125 is connected to the second small chamber 73 of the second lift cylinder 7.

Referring to fig. 1, 2 and 3, a throttle valve 17 is connected to the first oil port 121 of the flow dividing block 12, the throttle valve 17 includes an adjusting handle 171, and the opening of the throttle valve 17 can be changed by rotating the adjusting handle 171, so as to control the oil feeding/discharging speed. The right end of the gearbox 3 is provided with the multi-way valve 2, the throttle valve 17 is communicated with the multi-way valve 2, the fourth oil port 124 is communicated with the multi-way valve 2, and the multi-way valve 2 is communicated with the oil return port 14. A seat 8 is provided above the lifter case 1, the throttle valve 17 is provided below the seat 8, and the adjustment handle 171 is provided forward at the lower right of the seat 8, so that the driver can operate the adjustment handle 171 while sitting on the seat 8. In other embodiments, the positions of the diversion block 12 and the throttle valve 17 are adjusted to change the position, the orientation and the like of the adjusting handle 171, and similar effects of convenient touch and operation can also be achieved.

Referring to fig. 4, 5 and 6, the utility model discloses a tractor, by the PTO drive elevator pump 5 of engine, is equipped with oil absorption filter 4 between elevator pump 5 and the

gearbox

3, and 5 oil-outs of elevator pump and 2 intercommunications of multiple unit valve. The working process is as follows, the operating lever of the multi-way valve 2 is operated to the lifting position, the lifting pump 5 sucks oil from the gearbox 3, the middle part of the lifting pump passes through the oil sucking filter 4, the lifting pump 5 discharges oil to the multi-way valve 2 and then enters the throttle valve 17, the throttle valve 16 is communicated with the first oil port 121, and hydraulic oil enters the flow dividing block 12 from the first oil port 121. After being branched, the oil respectively reaches the first large cavity 62 of the first lifting cylinder 6 from the second oil port 122 through the hose, and reaches the second large cavity 72 of the second lifting cylinder 7 from the third oil port 123 through the hose. The piston rods of the first lifting cylinder 6 and the second lifting cylinder 7 are ejected by the high-pressure hydraulic oil, and the first lifting arm 61 and the second lifting arm 71 are driven to ascend, so that the lifting action is completed. Meanwhile, the hydraulic oil in the first small cavity 63 reaches the sixth oil port 126 through the hose, the hydraulic oil in the second small cavity 73 reaches the fifth oil port 125 through the hose, and after confluence, the hydraulic oil enters the multi-way valve 2 through the hose from the fourth oil port 124, and finally flows into the oil return port 14 through the hose from the oil passage inside the multi-way valve 2.

An operating rod of the multi-way valve 2 is operated to a descending position, the lift pump 5 absorbs oil from the gearbox 3 through the oil absorption filter 4, and the oil discharged from the lift pump 5 enters the oil return port 14 through an oil passage in the multi-way valve 2. Due to the downward weight of the implement, the first lift arm 61 and the second lift arm 71 are lowered and the piston rods of the first lift cylinder 6 and the second lift cylinder 7 are pressed back. The hydraulic oil sealed in the first large cavity 62 and the second large cavity 72 respectively reaches the second oil port 122 and the third oil port 123 through the hoses, and after confluence, the hydraulic oil reaches the multi-way valve 2 from the first oil port 121 through the throttle valve 17, and then enters the oil return port 14 through the hose after passing through the oil passage inside the multi-way valve 2, so that oil drainage is realized, and the non-forced descending action is completed. In the working process, the descending speed is mainly controlled by the weight of the machine, but the opening of the throttle valve is adjusted by operating the throttle valve adjusting handle 171, so that the oil drainage amount can be controlled, the descending speed is controlled, and the descending speed cannot be out of control.

When the control lever of the multi-way valve 2 is operated to a strong pressure position, the lift pump 5 sucks oil from the gearbox 3 through the oil suction filter 4, and the oil discharged from the lift pump 5 enters the fourth oil port 124 of the flow dividing block 12 through the multi-way valve 2. The hydraulic oil is branched and then flows from the fifth port 125 to the second small chamber 73 through the hose, and flows from the sixth port 126 to the first small chamber 63 through the hose. The piston rods of the first lifting cylinder 6 and the second lifting cylinder 7 are pressed back by hydraulic oil to drive the first lifting arm 61 and the second lifting arm 71 to descend, and the forced pressing action is completed. At this time, the hydraulic oil in the first large chamber 62 reaches the second oil port 122 through the hose, the hydraulic oil in the second large chamber 72 reaches the third oil port 123 through the hose, and then flows into the first oil port 121, passes through the throttle valve 17, enters the multi-way valve 2, and finally enters the oil return port 14, so that oil drainage is realized. In this process, the lowering speed is controlled not only by the weight of the implement and the opening of the throttle valve 17, but also more by the amount of high-pressure oil supplied by the lift pump.

It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.

Claims

1. A tractor, comprising:

a gearbox;

the lifter shell is arranged at the upper end of the gearbox;

a seat disposed above the riser housing;

2. The tractor according to claim 1, wherein the lifter housing includes a main body portion, a diversion block, a manipulation bracket mounting portion, and an oil return port, the main body portion is provided as a transmission upper end cover, the diversion block and the manipulation bracket mounting portion are provided at a front portion of the main body portion, and the oil return port is provided between the diversion block and the manipulation bracket mounting portion.

3. The tractor as claimed in claim 2, wherein the flow dividing block is provided at a right front portion of the lifter housing, a first oil port is provided at a front end of the flow dividing block, the throttle valve communicates with the first oil port, and the adjustment handle is located axially forward of the first oil port and at a lower right portion of the seat.

4. The tractor as defined by claim 2 wherein the diverter block and the steering bracket mounting portion are both integrally disposed on the lifter housing.

5. The tractor of claim 2, wherein the lift housing further includes a first lift arm mount disposed at a rear of the main body portion and a second lift arm mount disposed at a rear of the main body portion, the first lift arm mount including a first support portion and a first sleeve disposed on the first support portion, the second lift arm mount including a second support portion and a second sleeve disposed on the second support portion.

6. The tractor as defined by claim 5 wherein the axis of the first sleeve is parallel to the upper end surface of the main body portion of the lifter housing and the axis of the second sleeve is parallel to the upper end surface of the main body portion of the lifter housing, the axis of the first sleeve and the axis of the second sleeve being coincident.

7. The tractor as defined by claim 5 further comprising a first lift cylinder disposed rearward of the gearbox, the first lift arm being connected to the first sleeve, a first lift arm disposed above the first lift cylinder, the second lift cylinder disposed rearward of the gearbox, and a second lift arm disposed above the second lift cylinder, the second lift arm being connected to the second sleeve.

8. The tractor as defined by claim 5 wherein said first support portion extends forwardly and is connected to the steering bracket mounting portion and said second support portion extends forwardly and is connected to the diverter block.

9. The tractor as defined by claim 7, further comprising a lift pump, an oil suction filter connected between the lift pump and the transmission, and a multi-way valve disposed on a right side of the transmission, the multi-way valve being in communication with the throttle valve, the lift pump being in communication with the multi-way valve.

10. The tractor of claim 9, wherein the first lift cylinder includes a first small chamber and a first large chamber, the second lift cylinder includes a second small chamber and a second large chamber, the diverter block further includes a second port in communication with the first large chamber, a third port in communication with the second large chamber, a sixth port in communication with the first small chamber, a fifth port in communication with the second small chamber, and a fourth port in communication with the multiplex valve.