CN111287234A

CN111287234A - Cantilever lock

Info

Publication number: CN111287234A
Application number: CN201911256585.2A
Authority: CN
Inventors: 布雷特·格雷厄姆; 亚力克斯·范德格里夫特; 克里斯多夫·梅耶; 约翰·马伦霍尔茨; 奈尔什·T·昆巴哈尔; 约翰·S·福尔茨
Original assignee: Deere and Co
Current assignee: Deere and Co
Priority date: 2018-12-07
Filing date: 2019-12-09
Publication date: 2020-06-16
Also published as: US20200181869A1; DE102019219101A1; AU2019271992A1

Abstract

A work vehicle includes a frame. At least one ground engaging device is coupled to the frame and configured to support the frame above a surface. The boom assembly is coupled to the frame and configured to move from a lowered position to a raised position. The attachment coupler is coupled to the distal end of the boom assembly. At least one tilt cylinder is coupled to the boom assembly and the attachment coupler. The cantilever lock is coupled to at least one of the frame and the cantilever assembly. The boom lock is configured to move from an unlocked position in which the boom assembly is movable to a locked position in which the boom assembly is locked to the frame in the lowered position.

Description

Cantilever lock

Technical Field

The present disclosure relates generally to work vehicles such as skid steer loaders, compact track loaders, and other agricultural and construction loaders, and more particularly to a boom lock and method for locking a boom assembly of a work vehicle.

Background

In order to raise an attachment coupled to a boom of a work vehicle, boom raising cylinders are typically used. For maintenance, the boom is typically held in a raised position using a hydraulic cylinder lock.

Disclosure of Invention

In one embodiment, a work vehicle is disclosed. The work vehicle includes a frame. At least one ground engaging device is coupled to the frame and configured to support the frame above a surface. The boom assembly is coupled to the frame and configured to move from a lowered position to a raised position. The attachment coupler is coupled to the distal end of the boom assembly. At least one tilt cylinder is coupled to the boom assembly and the attachment coupler. The cantilever lock is coupled to at least one of the frame and the cantilever assembly. The boom lock is configured to move from an unlocked position in which the boom assembly is movable to a locked position in which the boom assembly is locked to the frame in the lowered position.

In another embodiment, a cantilever lock for a work vehicle is disclosed. The work vehicle includes a frame. A boom assembly is coupled to the frame and configured to move from a lowered position to a raised position. An attachment coupler is coupled to the distal end of the boom assembly. At least one tilt cylinder is coupled to the boom assembly and the attachment coupler. The cantilever lock comprises: a movable shaft coupled to at least one of the boom assembly and the frame. The receiving device is coupled to at least one of the other of the boom assembly and the frame. The receiving device is configured to receive a movable shaft. The boom lock is configured to move from an unlocked position in which the boom assembly is movable to a locked position in which the boom assembly is locked to the frame in the lowered position.

In yet another embodiment, a method for locking a boom assembly of a work vehicle to a frame of the work vehicle is disclosed. The boom assembly is coupled to an attachment coupler that is coupled to an attachment. The method comprises the following steps: a movable shaft is provided that is coupled to at least one of the boom assembly and the vehicle frame. The method further comprises the following steps: a receiving device is provided that is coupled to at least one of the other of the boom assembly and the frame. The method comprises the following steps: the movable shaft is moved from an unlocked position to a locked position in which the receiving device receives the movable shaft. The method further comprises the following steps: a load path is created through the attachment, the attachment coupler, the boom assembly, the movable shaft, the receiver, and the frame.

Other features and aspects will become apparent by consideration of the detailed description and accompanying drawings.

Drawings

FIG. 1 is a perspective view of a work vehicle having a cantilever lock.

Fig. 2A is a schematic illustration of a work vehicle control of the work vehicle of fig. 1 in a standard configuration.

Fig. 2B is a schematic illustration of a work vehicle control of the work vehicle of fig. 1 in a retrofit configuration.

FIG. 3 is a perspective view of the work vehicle of FIG. 1 with the boom assembly in a lowered position and a raised position.

FIG. 4 is a side view of a work vehicle having a dozing blade.

FIG. 5A is a bottom view of the work vehicle of FIG. 1 illustrating a cantilever lock according to one embodiment.

FIG. 5B is a bottom view of the work vehicle of FIG. 1 showing a cantilever lock according to another embodiment.

Fig. 5C is a bottom view of the work vehicle of fig. 1 showing a cantilever lock according to yet another embodiment.

Fig. 6A is a perspective view of a work vehicle having forks.

Figure 6B is a perspective view of a work vehicle having a trencher.

Fig. 7 is a perspective view of the work vehicle of fig. 1 showing the boom assembly in a dump position.

FIG. 8 is a schematic illustration of a work vehicle having a cantilever lock.

Fig. 9A is a schematic diagram of an illustrative method for locking a boom assembly of a work vehicle to a frame of the work vehicle.

Fig. 9B is a schematic view of an illustrative method for maintaining a cutting edge on a cutting plane in both an operating position and a dump position of a work vehicle.

Before any embodiments are explained in detail, it is to be understood that the disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Other embodiments of the invention may comprise any combination of features from one or more dependent claims and these features may be incorporated in any independent claim, either collectively or individually.

As used herein, unless otherwise limited or modified, the following list indicates a configuration or arrangement that may include individual elements of the list, or any combination thereof: the list has elements separated by conjunctions (e.g., "and") and these elements are prefixed by one or more of the phrases "… …" or at least one of the phrases "… …". For example, "at least one of A, B and C" or "one or more of A, B and C" may mean any combination of two or more of A only, B only, C only, or A, B and C only (e.g., A and B; B and C; A and C; or A, B and C).

Detailed Description

Fig. 1 shows a work vehicle 10 having a frame 15. The work vehicle 10 is shown as a compact track loader 20. The present disclosure contemplates other types of work vehicles 10, including skid steer loaders and other types of agricultural, construction, or forestry loaders. At least one ground engaging device 25 is coupled to frame 15 and is configured to support frame 15 above surface 30 and move work vehicle 10 along surface 30. The illustrated ground engaging devices 25 are a pair of tracks 35. Alternatively, the ground engaging means 25 may be wheels (not shown).

An operator station 40 having a door 45 is coupled to the frame 15. Operator interface 50 may be located in operator station 40 or remotely from work vehicle 10. Operator interface 50 may be a display 55 that may include an operator input device 60 configured to set or change a work vehicle setting or parameter 65 (fig. 8), such as a grade command 70 (fig. 8). For example, the display 55 may be a touch screen 75. The operator input device 60 may be separate from the display 55. For example, the operator input device 60 may be a keypad 80 or a sealed switch module ("SSM") 85.

Work vehicle controls 90 may also be located in operator station 40 or remotely from work vehicle 10. Referring to fig. 2A and 2B, work vehicle controls 90 may include any combination of a first joystick 95, a second joystick 100, and a plurality of switches 102 (e.g., rotary wheels) and a plurality of buttons 103 (e.g., push buttons) or other control devices (e.g., dials, knobs). For example, the first joystick 95 may have a plurality of buttons 103, and the second joystick 100 may have a switch 102 and a plurality of buttons 103. The present disclosure contemplates other switch 102 and button 103 configurations. The functions of the work vehicle controls 90 may be reassigned from the standard configuration 105 to the updated configuration 110, for example, from the standard configuration 105 like the compact track loader mode 115 to the updated configuration 110 like the dozer mode 120 or other modes (e.g., forklift mode, trencher mode).

In the standard configuration 105, the update configuration 110, the compact track loader mode 115, and the dozer mode 120, the first joystick 95 may have the same operation and function: pushing the first joystick 95 forward moves the work vehicle 10 forward 125, pushing the first joystick 95 backward moves the work vehicle 10 backward 130, pushing the first joystick 95 to the right turns 135, and pushing the first joystick 95 to the left turns 140.

In the standard configuration 105 and the compact track loader mode 115, the second joystick 100 may have the same operation and function: pushing the second joystick 100 forward causes the boom to move down 145, pushing the second joystick 100 backward causes the boom to move up 150, pushing the second joystick 100 to the right causes the dipper to move down 155, and pushing the second joystick 100 to the left causes the dipper to move up 160.

In the update configuration 110 and the dozer mode 120, the second joystick 100 may have the same operation and function: pushing the second lever 100 forward causes the blade to be downward 165, pushing the second lever 100 backward causes the blade to be upward 170, pushing the second lever 100 rightward causes the blade to be tilted to the right 175, pushing the second lever 100 leftward causes the blade to be tilted to the left 180, pushing the switch 102 forward causes the blade to be tilted to the right 185, and pushing the switch 102 backward causes the blade to be tilted to the left 190.

Referring to fig. 1, a boom assembly 195 is coupled to frame 15. The cantilever assembly 195 includes a pair of upper links 200 pivotally coupled to the frame 15. A pair of lower links 205 are pivotally coupled to frame 15. A pair of boom cylinders 210 is pivotally coupled to frame 15, one boom cylinder 210 on each side of work vehicle 10. The cantilever cylinder 210 may be a hydraulic actuator 215 or an electronic actuator 220. A pair of suspension arms 225 are pivotally coupled to the upper link 200 and the lower link 205, and are positioned with one suspension arm 225 on each side of the work vehicle 10. A pair of booms 225 are pivotally coupled to the boom cylinder 210. Referring to fig. 1 and 3, the boom cylinder 210 is configured to move the boom assembly 195 from a lowered position 230 to a raised position 235. The present disclosure contemplates other cantilever assembly 195 configurations.

Referring to fig. 1, a boom position sensor 240 is coupled to at least one of frame 15, boom assembly 195, and boom cylinder 210. The cantilever position sensor 240 is configured to transmit a cantilever position signal 245 (fig. 8) indicative of the position of the cantilever assembly 195. The boom position sensor 240 may be a rotation sensor, a cylinder position sensor, or other type of sensor.

Referring to fig. 4, the attachment coupler 250 is coupled to the distal end 255 of the cantilever assembly 195. A pair of tilt cylinders 260 are coupled to the boom assembly 195 and the attachment coupler 250, and one tilt cylinder 260 is on each side of the work machine 100. Tilt cylinder 260 may be a hydraulic actuator 265 or an electronic actuator 270. The tilt cylinder 260 is configured to move or tilt the attachment coupler 250.

Referring to fig. 1 and 4, a hydraulic system 275 is coupled in fluid communication to the boom cylinder 210 and the tilt cylinder 260. The hydraulic system 275 includes a hydraulic pump 280 and a hydraulic valve 285 (e.g., an electro-hydraulic valve) to control hydraulic fluid flow to the boom cylinder 210 and the tilt cylinder 260 upon receiving an input from at least one of the operator interface 50 and the work vehicle controls 90. Referring to fig. 2A, 2B, and 4, in the updated configuration 110, the first joystick 95, the second joystick 100, the switch 102, and the button 103 may be changed to control different aspects of the hydraulic system 275. For example, the second joystick 100 controls the boom cylinder 210 in the forward boom down 145 and the rearward boom up 150 directions in the compact track loader mode 115, and the second joystick 100 may now be changed to control the tilt cylinder 260 in the forward blade down 165 and rearward blade up 170 directions in the dozer mode 120. The present disclosure contemplates that other aspects of the hydraulic system 275 may be controlled by other changes to the first joystick 95, the second joystick 100, the switch 102, and the button 103.

Referring to fig. 5A, 5B, and 5C, the cantilever lock 290 may be coupled to at least one of the frame 15 and the cantilever assembly 195. The cantilever lock 290 is configured to be movable from an unlocked position 295, in which the cantilever assembly 195 is movable, to a locked position 300, in which the cantilever assembly 195 is locked to the frame 15 in the lowered position 230 (fig. 3). The cantilever lock 290 may include a receiver 305 coupled to at least one of the cantilever assembly 195 and the frame 15. Receiving device 305 is configured to receive a movable shaft 310 (e.g., a sliding shaft, a rotating shaft) coupled to at least one of the other of boom assembly 195 and frame 15. In some embodiments, the receiving device 305 may be configured to receive the slider 315 or the rotary latch 320 or the wedge 325. The movable shaft 310 may be a hydraulic actuator 330 or an electronic actuator 335.

Referring to fig. 1, 4, 5A, 5B, 5C, 6A, and 6B, the attachment 340 may be coupled to the attachment coupler 250. The attachment 340 may be a bucket 345, dozing blade 350, fork 355, trencher 360, or other attachment 340 (e.g., grapple, auger). The attachment 340 may include a cutting edge 365 (fig. 1).

Referring to fig. 4, an attachment position sensor 370 may be coupled to at least one of the boom assembly 195, the attachment coupler 250, and the tilt cylinder 260, and configured to send an attachment position signal 375 (fig. 8) indicative of the position of the attachment coupler 250. The attachment position sensor 370 may be a rotation sensor, a cylinder position sensor, or other type of sensor.

An inertial measurement unit ("IMU") 380 or inclination sensor 385 may be coupled to the attachment 340 and configured to transmit an inclination signal 390 (fig. 8) indicative of the inclination of the attachment 340 relative to the frame 15 or surface 30. The inclination corresponds to the blade being tilted to the right 175 and the blade being tilted to the left 180 in the update configuration 110 (FIG. 2B) and the dozer mode 120 (FIG. 2B).

Referring to fig. 1 and 8, the identification device 395 may be coupled to the attachment 340 and configured to transmit the attachment identification signal 400 after the activation event 405. The identifying means 395 may be a beacon component 410. The attachment identification signal 400 may include an attachment dimension 415. The activation event 405 may include the work vehicle 10 contacting the attachment 340 with minimal force, wherein the attachment 340 remains stationary. Alternatively, the activation event 405 may include the recognition device 395 receiving the activation signal 420 from the activation sensor 425 coupled to the work vehicle 10. Operator interface 50 or display 55 may be communicatively coupled to identification device 395 and configured to display attachment identification signal 400. Operator interface 50, display 55, or operator input device 60 may be configured to receive operator input indicating attachment confirmation 430 and grade command 70. The operator interface 50 or the display 55 may show the plurality of attachment identification signals 400 of the plurality of attachments 340 in an order of the strengths of the attachment identification signals 400, the order starting with the strongest of the various signals from the various attachments 340. The operator interface 50 or display 55 may also display a plurality of attachment identification signals 400 for a plurality of attachments 340 with the recently used or previously used attachment 340 as a starting point. Other display orders of the attachment identifying signal 400 are also contemplated by the present disclosure.

Positioning receiver 435 may be coupled to frame 15 or operator station 40 and configured to receive geospatial positioning signals 440 ("GPS") (e.g., GNSS, GLONASS) to locate the position of work vehicle 10.

The grade control system 445 may be communicatively coupled to the operator input device 60 and configured to receive the grade command 70 and define a cutting plane 450. Grade control system 445 may be a laser 455 coupled to frame 15 and configured to receive grade command 70 and project cutting plane 450 onto surface 30. Alternatively, grade control system 445 may be an on-board interior system 460 that does not project cutting plane 450 but is communicatively coupled to operator input device 60 and configured to receive grade command 70.

Controller 465 may be coupled to work vehicle 10. In dozer mode 120 (fig. 2B), the controller 465 may be configured to receive an operator signal 470 from the operator interface 50, send a boom lowering signal 475 to the hydraulic system 275 to lower the boom assembly 195 to the frame 15, and transmit a boom lock signal 480 to the hydraulic actuator 330 or the electronic actuator 335 of the boom lock 290 to move the boom lock 290 to the lock position 300 (fig. 5A, 5B, 5C) after the boom assembly 195 is lowered to the frame 15. Controller 465 may receive and transmit signals via work vehicle wireless communication device 485 or wirelessly (e.g., bluetooth) via communication bus 490. The controller 465 may include an electronic data processor 495.

The electronic data processor 495 may be disposed locally as part of the work vehicle 10 or remotely from the work vehicle 10. In various embodiments, the electronic data processor 495 may include a microprocessor, microcontroller, central processing unit, programmable logic array, programmable logic controller, application specific integrated circuit, logic circuit, arithmetic logic unit, or other suitable programmable circuit suitable for performing data processing and/or system control operations. In other embodiments, the electronic data processor 495 may manage the transfer of data to and from remote processing systems via a network and wireless infrastructure. For example, an electronic data processor may collect and process signal data from communication bus 490 for transmission in a forward or backward direction (i.e., to and from a remote processing system).

The memory device 500 stores information and data for access by the electronic data processor 495, the communication bus 490, or the vehicle wireless communication device 485. Storage device 500 may include electronic memory, non-volatile random access memory, optical storage device, magnetic storage device, or other device for storing and accessing electronic data on any recordable, rewritable or readable electronic, optical or magnetic storage medium.

For two-dimensional automatic control of the attachment 340, the controller 465 may be configured to receive the geospatial positioning signal 440 from the positioning receiver 435 and receive the boom position signal 245, the attachment position signal 375, the operator signal 470 or input, and reference the storage device 500 and alter the work vehicle controls 90 between the standard configuration 105 and the updated configuration 110. The controller 465 may be configured to control the height of the attachment 340 in accordance with grade commands 70 by controlling the hydraulic system 275.

Alternatively, for three-dimensional automated control of the attachment 340, the controller 465 may be configured to receive the geospatial positioning signal 440 from the positioning receiver 435 and receive the boom position signal 245, the attachment position signal 375, the inclination signal 390, the attachment identification signal 400, the operator signal 470, or an input, and change the work vehicle controls 90 between the standard configuration 105 and the updated configuration 110. The controller 465 may be configured to control the height and inclination of the attachment 340 in accordance with the grade commands 70.

The controller 465 may be configured to control the hydraulic system 275 to control the height and inclination of the attachment 340 in accordance with the grade commands 70. The controller 465 may be configured to control the hydraulic system 275 to maintain the cutting edge 365 on the cutting plane 450. The controller 465 may be configured to receive the boom position signal 245, the attachment position signal 375, and the grade command 70, and maintain the cutting edge 365 on the cutting plane 450 in both the operating position 505 (fig. 3) and the dump position 510 (fig. 7).

In operation, an operator may enter operator station 40 or remotely access work vehicle 10 via work vehicle wireless communication device 485 or communication bus 490. An operator may turn on work vehicle 10 via operator input device 60, such as SSM 85. The operator may use work vehicle controls 90 to cause work vehicle 10 to move toward attachment 340. When work vehicle 10 contacts, but before it moves attachment 340, an activation event 405 occurs and identification device 395 transmits attachment identification signal 400. Alternatively, the activation event 405 may occur when the activation sensor 425 sends the activation signal 420 to the recognition device 395 causing the recognition device 395 to send the attachment identification signal 400. Operator interface 50 or display 55 may display attachment identification signal 400, or if more than one attachment 340 is present when identification device 395 is active, operator interface 50 or display 55 may show a plurality of attachment identification signals 400 in an order of strength of attachment identification signals 400 starting with the strongest signal representing the attachment 340 closest to work vehicle 10.

The operator will position the work vehicle 10 to couple to the attachment 340. After attachment 340 is coupled to work vehicle 10, operator interface 50 or display 55 may require the operator to provide operator input indicating attachment confirmation 430 or grade command 70. Operator interface 50 or display 55 may display attachment dimensions 415 and the type of attachment 340 (e.g., bucket 345, blade 350, fork 355, trencher 360, or other attachment 340 (e.g., grapple, auger)) as part of attachment confirmation 430. The operator may enter operator inputs via the display 55 or the operator input device 60.

If the attachment 340 is a dozing blade 350, the operator may lock the boom assembly 195 to the frame 15 via the boom lock 290. The operator may activate the cantilever latch 290 by entering an operator input, wherein the operator interface 50 or display 55 or operator input device 60 causes the controller 465 to receive the operator signal 470. Upon receiving operator signal 470, controller 465 may transmit boom down signal 475 to hydraulic system 275 to lower boom assembly 195 to frame 15. Controller 465 may transmit boom lock signal 480 to hydraulic actuator 330 or electronic actuator 335 to move boom lock 290 to locked position 300. Once the dozing blade 350 is attached to the work vehicle 10 and the boom lock 290 is in the locked position 300, the operator may provide operator input to the operator interface 50 or operator input device 60 to select the dozer mode 120 to reconfigure the work vehicle controls 90 more like a standard dozer or crawler dozer.

When the dozing blade 350 is coupled to the attachment coupler 250, the load path 515 does not pass through the lower link 205 of the boom assembly 195. Load path 515 may pass through dozing blade 350, boom assembly 295, boom lock 290, and frame 15. The tilt cylinder 260 is configured to move or tilt the attachment 340 in both the unlocked position 295 and the locked position 300. For example, in locked position 300, tilt cylinder 260 may raise attachment 340 to move away from surface 30. Tilt cylinder 260 may move attachment 340 from operating position 505 to dumping position 510. When the attachment 340 is raised from the operating position 505 to the dumping position 510, the attachment 340 may rotate to maintain the cutting edge 365 on the cutting plane 450. For example, if the attachment 340 is a bucket 345, the bucket 345 may be configured to dump and spread the contents or material at the dump location 510. The standard configuration 105 may be used to control the bucket 345 and the updated configuration 110 may be used to control the dozing blade 350 or other attachment 340.

The grade control system 445 may receive the grade command 70 and define a cutting plane 450. The controller 465 may receive grade commands, geospatial positioning signals 440, boom position signals 245, attachment position signals 375, and inclination signals 390 to automatically control the height and inclination of the attachment 340 as the work vehicle 10 traverses the surface 30.

One method for locking boom assembly 195 of work vehicle 10 to frame 15 of work vehicle 10 is shown in fig. 9A. In step 520, the cantilever assembly 195 is coupled to the attachment coupler 250, the attachment coupler 250 being coupled to the attachment 340. In step 525, the method further comprises: providing a movable shaft 310 coupled to at least one of the boom assembly 195 and the frame 15; providing a receiving device 305 coupled to at least one of the other of the boom assembly 195 and the frame 15; and moving the movable shaft 310 from the unlocked position 295 to the locked position 300 in which the receiving device 305 receives the movable shaft 310. At step 530, the method includes creating a load path 515 through the attachment 340, the attachment coupler 250, the boom assembly 195, the movable shaft 310, the receiver 305, and the frame 15.

In step 535, the method further comprises: a controller 465 is provided to receive the operator signal 470 from the operator interface 50 (the operator interface 50 is positioned in the operator station 40 associated with the frame 15); sending a boom down signal 475 to a hydraulic system 275, the hydraulic system 275 configured to lower the boom assembly 195 to the frame 15; and transmitting a cantilever lock signal 480 to the hydraulic actuator 330 or the electronic actuator 335 to cause the receiving device 305 to receive the movable shaft 310.

In step 540, the method includes attachment 340 being dozing blade 350 and load path 515 passing through dozing blade 350, attachment coupler 250, boom assembly 195, movable shaft 310, receiver 305 and frame 15.

In step 545, the method further includes tilting the attachment 340 with at least one tilt cylinder 260 to raise the attachment 340 from the surface 30 without altering the loading path 515, the tilt cylinder 260 coupled to the boom assembly 195 and the attachment coupler 250.

One method for maintaining the cutting edge 365 on the cutting plane 450 in the operating position 505 and the dump position 510 of the work vehicle 10 is shown in fig. 9B. In step 550, the method includes providing a work vehicle 10, the work vehicle 10 including a frame 15, a boom assembly 195 coupled to the frame 15, an attachment coupler 250 coupled to a distal end 255 of the boom assembly 195, and an attachment 340 coupled to the attachment coupler 250. In step 555, the method further comprises: receiving a boom position signal 245 indicative of a position of the boom assembly 195; receive an attachment position signal 375 indicative of a position of the attachment coupler 250; receiving a grade command 70; and defines a cutting plane 450 and retains the cutting edge 365 on the cutting plane 450. In step 560, the method includes maintaining the cutting edge 365 on the cutting plane 450 in the dump position 510 by rotating the attachment 340.

Claims

1. A work vehicle comprising:

a frame;

at least one ground engaging device coupled to the frame and configured to support the frame above a surface;

a boom assembly coupled to the frame and configured to move from a lowered position to a raised position;

an attachment coupler coupled to the distal end of the boom assembly;

at least one tilt cylinder coupled to the boom assembly and the attachment coupler; and

a cantilever lock coupled to at least one of the frame and the cantilever assembly, the cantilever lock configured to move from an unlocked position in which the cantilever assembly is movable to a locked position in which the cantilever assembly is locked to the frame in the lowered position.

2. The work vehicle of claim 1, wherein the boom lock comprises a receiver coupled to at least one of the boom assembly and the frame, the receiver configured to receive a movable shaft coupled to at least one of the other of the boom assembly and the frame.

3. The work vehicle according to claim 1, further comprising: an operator station coupled with the frame; an operator interface located in the operator station; and a controller configured to:

receiving an operator signal from the operator interface; sending a boom-down signal to a hydraulic system configured to lower the boom assembly to the frame; and

a boom lock signal is sent to an actuator of the boom lock to move the boom lock to the locked position after lowering the boom assembly to the vehicle frame.

4. The work vehicle of claim 1, further comprising an attachment coupled to the attachment coupler, the tilt cylinder configured to tilt the attachment in an unlocked position and a locked position.

5. The work vehicle of claim 4, wherein the attachment is a dozing blade and the load path does not pass through the lower link of the boom assembly with the boom lock in the locked position.

6. The work vehicle of claim 4, wherein said attachment is a dozing blade and a load path passes through said boom assembly, said boom lock and said frame.

7. The work vehicle of claim 4, wherein said attachment is a bucket.

8. The work vehicle of claim 4, wherein said attachment is a fork.

9. The work vehicle of claim 4, wherein in the locked position, the tilt cylinder lifts the attachment from the surface.

10. A cantilever lock for a work vehicle, the work vehicle comprising: a frame; a boom assembly coupled to the frame and configured to move from a lowered position to a raised position; an attachment coupler coupled to a distal end of the boom assembly; and at least one tilt cylinder coupled to the boom assembly and the attachment coupler,

the cantilever lock comprises:

a movable shaft coupled to at least one of the boom assembly and the frame; and

a receiving device coupled to at least one of the other of the boom assembly and the frame, the receiving device configured to receive a movable shaft,

the boom lock is configured to move from an unlocked position in which the boom assembly is movable to a locked position in which the boom assembly is locked to the frame in the lowered position.

11. The cantilever lock of claim 10, further comprising a controller,

the controller is configured to:

receiving an operator signal from an operator interface;

sending a boom-down signal to a hydraulic system configured to lower the boom assembly to the frame; and

12. The cantilever lock of claim 10, further comprising: a dozing blade coupled to said attachment coupler and a load path passing through said dozing blade, said boom assembly, said boom lock and said frame.

13. The cantilever lock of claim 10, wherein in the locked position, the tilt cylinder lifts an attachment coupled to the attachment coupler from a surface.

14. The boom lock of claim 13 wherein the attachment is a dozing blade and a load path does not pass through a lower link of the boom assembly with the boom lock in a locked position.

15. A method for locking a boom assembly of a work vehicle to a frame of the work vehicle, the boom assembly coupled to an attachment coupler, the attachment coupler coupled to an attachment, the method comprising:

providing a movable shaft coupled to at least one of the boom assembly and the frame;

providing a receiving device coupled to at least one of the other of the boom assembly and the frame;

moving the movable shaft from an unlocked position to a locked position in which the receiving device receives the movable shaft; and

a load path is created through the attachment, the attachment coupler, the boom assembly, the movable shaft, the receiver, and the frame.

16. The method of claim 15, further comprising: providing a controller to receive an operator signal from an operator interface positioned in a cab coupled to the frame; sending a boom-down signal to a hydraulic system configured to lower the boom assembly to the frame; and sending a cantilever lock signal to the actuator to cause the receiving device to receive the movable shaft.

17. The method of claim 15, wherein the attachment is a dozing blade and the load path passes through the dozing blade, the attachment coupling, the boom assembly, the movable shaft, the receiving device, and the frame.

18. The method of claim 15, further comprising tilting the attachment with at least one tilt cylinder coupled to the boom assembly and the attachment coupler to lift the attachment from a surface without changing the load path.

19. The method of claim 15, wherein the attachment is a bucket.

20. The method of claim 15, wherein the attachment is a trencher.