A skid steer loader control system and skid steer loader

Abstract

The application discloses a skid loader milling machine control system and a skid loader, and the system comprises the following: control valve one and control valve three connected in series in a working oil circuit of an execution module one, the execution module one comprising a side shift oil cylinder and a left depth adjusting oil cylinder; control valve two and control valve four connected in series in a working oil circuit of an execution module two, the execution module two comprising a yaw oil cylinder and a right depth adjusting oil cylinder; a left handle used for controlling the reversing of the control valve three and the control valve four; and a right handle used for controlling the reversing of the control valve one and the control valve two. The application realizes the full matching of the skid loader control keys and the milling machine functions, realizes the full play of the milling machine functions, improves the construction effect, and speeds up the construction progress.

Description

Technical Field

[0001] This invention belongs to the field of skid steer loader technology, specifically relating to a skid steer loader milling control system and a skid steer loader. Background Technology

[0002] The milling machine is a common attachment used with skid steer loaders. The milling machine requires many control functions, but the number of control buttons reserved for the milling machine and other attachments in the skid steer loader's control device is limited. As a result, the control buttons of the skid steer loader cannot be well matched with the multiple functions of the milling machine, so the function of the milling machine cannot be fully utilized, which seriously affects the construction progress and construction effect. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a skid steer loader milling control system and a skid steer loader, which achieves full matching between the skid steer loader control buttons and the milling function, fully utilizes the milling function, improves construction efficiency, and accelerates construction progress.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows: In a first aspect, a control system for a skid steer loader milling machine is provided, comprising: control valve one and control valve three connected in series in the working oil circuit of execution module one, execution module one including a side-shifting cylinder and a left depth adjusting cylinder; outlet one and outlet two of control valve three are respectively connected to inlet one and inlet two of control valve one, and outlet one to outlet four of control valve one are respectively connected to the large chamber, small chamber, small chamber, and large chamber of the side-shifting cylinder; control valve two and control valve four connected in series in the working oil circuit of execution module two, execution module two including a yaw cylinder and a right depth adjusting cylinder; outlet one and outlet two of control valve four are respectively connected to inlet one and inlet two of control valve two, and outlet one to outlet four of control valve two are respectively connected to the large chamber, small chamber, small chamber, and large chamber of the yaw cylinder; a left handle for controlling the reversing of control valve three and control valve four; and a right handle for controlling the reversing of control valve one and control valve two.

[0005] Furthermore, the left handle is equipped with a button one electrically connected to the control end of control valve three and a button two electrically connected to the control end of control valve four; the right handle is equipped with a button four electrically connected to the control ends of control valve one and control valve two.

[0006] Furthermore, it also includes a motor and a control valve five; the control valve five is connected in parallel with the motor; the L port of the motor and the inlet of the control valve five are respectively connected to the oil source; the control end of the control valve five is electrically connected to the button three located on the right handle.

[0007] Furthermore, it also includes a control valve six, the inlet of which is connected to the outlet of control valve four and the inlet of control valve two; the inlet of control valve six is ​​connected to the outlet of control valve four and the inlet of control valve two; and the control end of control valve six is ​​electrically connected to button five located on the right handle.

[0008] Furthermore, when button four is not operated, both control valve one and control valve two are in the left position. If button one is in position K1A and control valve three is in the left position, hydraulic oil enters the small chamber of the lateral displacement cylinder through outlet two of control valve three, inlet two of control valve one, and outlet two of control valve one, causing the lateral displacement cylinder to retract. If button one is in position K1B and control valve three is in the right position, hydraulic oil enters the large chamber of the lateral displacement cylinder through outlet one of control valve three, inlet one of control valve one, and outlet one of control valve one, causing the lateral displacement cylinder to extend. If button two is in position K2A and control valve four is in the left position, hydraulic oil enters the small chamber of the yaw cylinder through outlet two of control valve four, inlet two of control valve two, and outlet two of control valve two, causing the yaw cylinder to retract. If button two is in position K2B and control valve four is in the right position, hydraulic oil enters the large chamber of the yaw cylinder through outlet one of control valve four, inlet one of control valve two, and outlet one of control valve two, causing the yaw cylinder to extend.

[0009] Furthermore, when button four is pressed, both control valve one and control valve two are in the right position. If button one is in position K1A and control valve three is in the left position, hydraulic oil enters the large chamber of the left depth adjusting cylinder through outlet two of control valve three, inlet two of control valve one, and outlet four of control valve one, causing the left depth adjusting cylinder to extend. If button one is in position K1B and control valve three is in the right position, hydraulic oil enters the small chamber of the left depth adjusting cylinder through outlet one of control valve three, inlet one of control valve one, and outlet three of control valve one, causing the left depth adjusting cylinder to retract. If button two is in position K2A and control valve four is in the left position, hydraulic oil enters the large chamber of the right depth adjusting cylinder through outlet two of control valve four, inlet two of control valve two, and outlet four of control valve two, causing the right depth adjusting cylinder to extend. If button two is in position K2B and control valve four is in the right position, hydraulic oil enters the small chamber of the right depth adjusting cylinder through outlet one of control valve four, inlet one of control valve two, and outlet three of control valve two, causing the right depth adjusting cylinder to retract.

[0010] Furthermore, when button three is pressed, control valve five is in the right position and open, the motor oil circuit is short-circuited, and the motor stops rotating.

[0011] Furthermore, when button five is pressed, control valve six is ​​in the upper position and is open. Since button four is not operated, control valve two is in the left position. Both the large and small chambers of the oscillating cylinder are connected to the return oil pipeline, and the oscillating cylinder is in a floating state.

[0012] In a second aspect, a skid steer loader is provided, the skid steer loader being equipped with the skid steer loader milling control system described in the first aspect.

[0013] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention uses control valves 1 and 3 connected in series in the working oil circuit of execution module 1, and control valves 2 and 4 connected in series in the working oil circuit of execution module 2; execution module 1 includes a side-shifting cylinder and a left depth adjusting cylinder; outlets 1 and 2 of control valve 3 are respectively connected to inlet 1 and inlet 2 of control valve 1, and outlets 1 to 4 of control valve 1 are respectively connected to the large chamber of the side-shifting cylinder, the small chamber of the side-shifting cylinder, the small chamber of the left depth adjusting cylinder, and the large chamber of the left depth adjusting cylinder; execution module 2 includes a yaw cylinder. The system includes a cylinder and a right depth adjustment cylinder; outlets one and two of control valve four are connected to inlet one and inlet two of control valve two, respectively; outlets one through four of control valve two are connected to the large chamber of the sway cylinder, the small chamber of the sway cylinder, the small chamber of the right depth adjustment cylinder, and the large chamber of the right depth adjustment cylinder, respectively; a left handle for controlling the reversing of control valves three and four; and a right handle for controlling the reversing of control valves one and two. This system achieves full matching between the skid steer loader control buttons and the milling machine function, fully utilizes the milling machine function, improves construction efficiency, and accelerates construction progress. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the arrangement of the left and right handles in an embodiment of the present invention; Figure 2 This is a schematic diagram of the button configuration of the left handle in an embodiment of the present invention; Figure 3 This is a schematic diagram of the button configuration of the right handle in an embodiment of the present invention; Figure 4 This is a schematic diagram of the control system for a skid steer loader milling head provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the circuit principle of the left handle and the corresponding control valve in an embodiment of the present invention; Figure 6 This is a schematic diagram of the circuit principle of the right handle and the corresponding control valve in an embodiment of the present invention; In the diagram: 1. Left handle; 2. Right handle; 3. Control valve one; 4. Control valve two; 5. Control valve three; 6. Control valve four; 7. Motor; 8. Actuation module one; 81. Side shift cylinder; 82. Left depth adjustment cylinder; 9. Actuation module two; 91. Oscillating cylinder; 92. Right depth adjustment cylinder; 10. Control valve five; 11. Control valve six; 12. Button one; 13. Button two; 22. Button three; 23. Button four; 24. Button five. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0016] Example 1 like Figures 1-6 As shown, a skid steer loader milling control system includes: control valve 3 and control valve 5 connected in series in the working oil circuit of execution module 1 8. Execution module 1 8 includes a side-shift cylinder 81 and a left depth adjustment cylinder 82. The outlets A7 and B7 of control valve 3 5 are respectively connected to the inlets A1 and B1 of control valve 3 5. The outlets A2, B2, A3, and B3 of control valve 3 5 are respectively connected to the large chamber of side-shift cylinder 81, the small chamber of side-shift cylinder 81, the small chamber of left depth adjustment cylinder 82, and the large chamber of left depth adjustment cylinder 82. The control valves 4 and 6 in the circuit include an execution module 9 comprising a yaw cylinder 91 and a right depth adjustment cylinder 92. The outlets A8 and B8 of control valve 6 are respectively connected to the inlets A4 and B4 of control valve 4. The outlets A5, B5, A6, and B6 of control valve 4 are respectively connected to the large chamber, small chamber, small chamber, and large chamber of the right depth adjustment cylinder 92. A left handle 1 is used to control the reversing of control valves 5 and 6. A right handle 2 is used to control the reversing of control valves 3 and 4.

[0017] The left handle 1 is equipped with a button 12 that is electrically connected to the control end of control valve 3 5 and a button 2 13 that is electrically connected to the control end of control valve 4 6; the right handle 2 is equipped with a button 4 23 that is electrically connected to the control ends of control valve 1 3 and control valve 2 4.

[0018] Control valve 510 is connected in parallel with motor 7; the L port of motor 7 and the inlet A9 of control valve 510 are respectively connected to the oil source; the control terminal of control valve 510 is electrically connected to button 322 located on the right handle 2.

[0019] The inlet A10 of control valve 611 is connected to the outlet A8 of control valve 46 and the inlet A4 of control valve 24; the inlet B10 of control valve 611 is connected to the outlet B8 of control valve 46 and the inlet B4 of control valve 24; the outlets A11 and B11 of control valve 611 are connected to the return oil line T. The control terminal of control valve 611 is electrically connected to button 24 located on the right handle 2.

[0020] This invention enables combined operation of multiple functions of the milling machine through the control buttons on the left and right handles.

[0021] When button 23 on the right handle is not operated, the solenoid Y6 of control valve 1 3 and control valve 2 are not energized. Control valve 1 3 is in the left position with A1 and A2 conducting and B1 and B2 conducting. Control valve 2 4 is in the left position with A4 and A5 conducting and B4 and B5 conducting.

[0022] If button 12 on the left handle 1 is in the forward position (K1A), the electromagnet Y1 of control valve 3 5 is energized, control valve 3 5 is in the left position, and hydraulic oil enters the small chamber of the side-shifting cylinder 81 through outlet B7 of control valve 3 5, inlet B1 of control valve 3 3, and outlet B2 of control valve 3 3, causing the side-shifting cylinder 81 to retract.

[0023] If button 12 on the left handle 1 is in the K1B position, the solenoid Y2 of control valve 3 5 is energized, control valve 3 5 is in the right position, and hydraulic oil enters the large chamber of the side displacement cylinder 81 through the outlet A7 of control valve 3 5, the inlet A1 of control valve 3 3, and the outlet A2 of control valve 3 3, and the side displacement cylinder 81 extends.

[0024] When button 12 on the left handle 1 is not operated, button 12 is in the neutral position K1C, and neither electromagnets Y1 nor Y2 of control valve 3 5 are energized, so control valve 3 5 is in the neutral position.

[0025] If button 13 on the left handle 1 is in the forward position (K2A), the electromagnet Y3 of control valve 6 is energized, control valve 6 is in the left position, and hydraulic oil enters the small chamber of yaw cylinder 91 through outlet B8 of control valve 6, inlet B4 of control valve 4, and outlet B5 of control valve 4, causing yaw cylinder 91 to contract.

[0026] If button 13 on the left handle 1 is in the K2B position, the solenoid Y4 of control valve 6 is energized, control valve 6 is in the right position, and hydraulic oil enters the large chamber of yaw cylinder 91 through outlet A8 of control valve 6, inlet A4 of control valve 4, and outlet A5 of control valve 4, and yaw cylinder 91 extends.

[0027] When button 13 on the left handle 1 is not operated, button 13 is in the neutral position K2C, and the electromagnets Y3 and Y4 of control valve 6 are not energized, so control valve 6 is in the neutral position.

[0028] When button 23 on the right handle 2 is pressed, the solenoid Y6 of control valve 3 and control valve 4 are both energized. Control valve 3 is in the right position, A1 and A3 are connected, B1 and B3 are connected, and control valve 4 is in the right position, A4 and A6 are connected, B4 and B6 are connected.

[0029] If button 12 on the left handle 1 is in the forward position (K1A), the solenoid Y1 of control valve 3 5 is energized, control valve 3 5 is in the left position, and hydraulic oil enters the large chamber of the left depth adjusting cylinder 82 through outlet B7 of control valve 3 5, inlet B1 of control valve 3 3, and outlet B3 of control valve 3 3, and the left depth adjusting cylinder 82 extends.

[0030] If button 12 on the left handle 1 is in the K1B position, the solenoid Y2 of control valve 3 5 is energized, control valve 3 5 is in the right position, and hydraulic oil enters the small chamber of left depth adjusting cylinder 82 through outlet A7 of control valve 3 5, inlet A1 of control valve 3 3, and outlet A3 of control valve 3 3, causing left depth adjusting cylinder 82 to contract.

[0031] If button 13 on the left handle 1 is in the forward position (K2A), the electromagnet Y3 of control valve 6 is energized, control valve 6 is in the left position, and hydraulic oil enters the large chamber of right depth adjusting cylinder 92 through outlet B8 of control valve 6, inlet B4 of control valve 4, and outlet B6 of control valve 4, causing right depth adjusting cylinder 92 to extend.

[0032] If button 13 on the left handle 1 is in the K2B position, the solenoid Y4 of control valve 6 is energized, control valve 6 is in the right position, and hydraulic oil enters the small chamber of right depth adjusting cylinder 92 through outlet A8 of control valve 6, inlet A4 of control valve 4, and outlet A6 of control valve 4, causing right depth adjusting cylinder 92 to contract.

[0033] When button 22 on the right handle 2 is pressed, the electromagnet Y5 of control valve 10 is energized, control valve 10 is in the right position and is open. At this time, the oil circuit of motor 7 is short-circuited, and the hydraulic oil flows directly through the inlet A9 of control valve 10 to the outlet B9 of control valve 10, and motor 7 stops rotating.

[0034] When button 24 on the right handle 2 is pressed, the electromagnet Y7 of control valve 11 is energized, and control valve 11 is in the upper position and conducting. Since button 23 on the right handle 2 is not operated, control valve 4 is in the left position. The large chamber of the yaw cylinder 91 is connected to the return oil line through the outlet A5 of control valve 4, the inlet A4 of control valve 4, the inlet A10 of control valve 11, and the outlet A11 of control valve 11. The small chamber of the yaw cylinder 91 is connected to the return oil line through the outlet B5 of control valve 4, the inlet B4 of control valve 4, the inlet B10 of control valve 11, and the outlet B11 of control valve 11. The yaw cylinder 91 is in a floating state.

[0035] The sequence of electromagnet action of control valve 1 (3), control valve 2 (4), control valve 3 (5), control valve 4 (6), control valve 5 (10), and control valve 6 (11) in this invention corresponds to the sequence of action of the milling machine, as shown in Table 1.

[0036] Table 1. Comparison of the electromagnet action sequence of each control valve with the milling machine action sequence.

[0037] This invention uses fewer control buttons to control multiple functions of the milling machine, and the machine and the whole machine are well matched; it achieves full matching between the control buttons of the skid steer loader and the functions of the milling machine, realizes the full utilization of the milling machine's functions, improves construction effect and speeds up construction progress.

[0038] Example 2 Based on the skid steer loader milling control system described in Embodiment 1, this embodiment provides a skid steer loader equipped with the skid steer loader milling control system described in Embodiment 1.

[0039] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control system for a skid steer loader milling head, characterized in that, include: Control valve 1 (3) and control valve 3 (5) are connected in series in the working oil circuit of execution module 1 (8). Execution module 1 (8) includes a side-shifting cylinder (81) and a left depth adjusting cylinder (82). The outlet 1 and outlet 2 of control valve 3 (5) are respectively connected to the inlet 1 and inlet 2 of control valve 1 (3). The outlet 1 to outlet 4 of control valve 1 (3) are respectively connected to the large chamber of side-shifting cylinder (81), the small chamber of side-shifting cylinder (81), the small chamber of left depth adjusting cylinder (82), and the large chamber of left depth adjusting cylinder (82). Control valve 2 (4) and control valve 4 (6) are connected in series in the working oil circuit of execution module 2 (9). Execution module 2 (9) includes yaw cylinder (91) and right depth adjustment cylinder (92). The outlet 1 and outlet 2 of control valve 4 (6) are respectively connected to the inlet 1 and inlet 2 of control valve 2 (4). The outlet 1 to outlet 4 of control valve 2 (4) are respectively connected to the large chamber of yaw cylinder (91), the small chamber of yaw cylinder (91), the small chamber of right depth adjustment cylinder (92), and the large chamber of right depth adjustment cylinder (92). The left handle (1) is used to control the reversal of control valve three (5) and control valve four (6). The right handle (2) is used to control the reversal of control valve one (3) and control valve two (4); The left handle (1) is provided with a button one (12) electrically connected to the control end of the control valve three (5) and a button two (13) electrically connected to the control end of the control valve four (6). The right handle (2) is provided with a button four (23) that is electrically connected to the control end of control valve one (3) and control valve two (4); When button four (23) is not operated, control valve one (3) and control valve two (4) are both in the left position. If button 1 (12) is in position K1A and control valve 3 (5) is in the left position, hydraulic oil enters the small chamber of the side displacement cylinder (81) through the outlet 2 of control valve 3 (5), the inlet 2 of control valve 1 (3), and the outlet 2 of control valve 1 (3), and the side displacement cylinder (81) contracts. If button 1 (12) is in position K1B and control valve 3 (5) is in the right position, hydraulic oil enters the large chamber of the side displacement cylinder (81) through the outlet of control valve 3 (5), the inlet of control valve 1 (3), and the outlet of control valve 1 (3), and the side displacement cylinder (81) extends. If button 2 (13) is in position K2A and control valve 4 (6) is in the left position, hydraulic oil enters the small chamber of yaw cylinder (91) through outlet 2 of control valve 4 (6), inlet 2 of control valve 2 (4), and outlet 2 of control valve 2 (4), and yaw cylinder (91) contracts. If button 2 (13) is in position K2B and control valve 4 (6) is in the right position, hydraulic oil enters the large chamber of yaw cylinder (91) through outlet 1 of control valve 4 (6), inlet 1 of control valve 2 (4), and outlet 1 of control valve 2 (4), and yaw cylinder (91) extends. When button four (23) is pressed, control valve one (3) and control valve two (4) are both in the right position. If button 1 (12) is in position K1A and control valve 3 (5) is in the left position, hydraulic oil enters the large chamber of the left depth adjustment cylinder (82) through outlet 2 of control valve 3 (5), inlet 2 of control valve 1 (3), and outlet 4 of control valve 1 (3), and the left depth adjustment cylinder (82) extends. If button 1 (12) is in position K1B and control valve 3 (5) is in the right position, hydraulic oil enters the small chamber of the left depth adjustment cylinder (82) through the outlet 1 of control valve 3 (5), the inlet 1 of control valve 1 (3), and the outlet 3 of control valve 1 (3), and the left depth adjustment cylinder (82) contracts. If button 2 (13) is in position K2A and control valve 4 (6) is in the left position, hydraulic oil enters the large chamber of right depth adjusting cylinder (92) through outlet 2 of control valve 4 (6), inlet 2 of control valve 2 (4), and outlet 4 of control valve 2 (4), and right depth adjusting cylinder (92) extends. If button 2 (13) is in position K2B and control valve 4 (6) is in the right position, hydraulic oil enters the small chamber of right depth adjusting cylinder (92) through outlet 1 of control valve 4 (6), inlet 1 of control valve 2 (4), and outlet 3 of control valve 2 (4), and right depth adjusting cylinder (92) contracts.

2. The skid steer loader milling control system according to claim 1, characterized in that, It also includes a motor (7) and a control valve (10); the control valve (10) is connected in parallel with the motor (7); the L port of the motor (7) and the inlet of the control valve (10) are respectively connected to the oil source; the control end of the control valve (10) is electrically connected to the button (22) on the right handle (2).

3. The skid steer loader milling head control system according to claim 2, characterized in that, It also includes control valve six (11), the inlet of control valve six (11) is connected to the outlet of control valve four (6) and the inlet of control valve two (4); the inlet of control valve six (11) is connected to the outlet of control valve four (6) and the inlet of control valve two (4); the control end of control valve six (11) is electrically connected to button five (24) set on the right handle (2).

4. The skid steer loader milling control system according to claim 3, characterized in that, When button three (22) is pressed, control valve five (10) is in the right position and is open, the oil circuit of motor (7) is short-circuited, and motor (7) stops rotating.

5. The skid steer loader milling control system according to claim 3, characterized in that, When button five (24) is pressed, control valve six (11) is in the upper position and is open. Since button four (23) is not operated, control valve two (4) is in the left position. The large and small chambers of the sway cylinder (91) are connected to the return oil pipeline, and the sway cylinder (91) is in a floating state.

6. A skid steer loader, characterized in that, The skid steer loader is equipped with a skid steer loader milling control system as described in any one of claims 1 to 5.

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