Pilot control assembly, travel system, and work machine

Abstract

The present application relates to the field of working machine, provide a kind of pilot control assembly, walking system and working machine.Pilot control assembly includes: pilot valve, the valve port opening of the pilot valve is adjustable;Feedback component, the feedback component is connected with the pilot valve, the feedback component responds to the acceleration of the working machine, drives the spool of the pilot valve to the direction of closing the pilot valve or the direction of opening the pilot valve movement, to reduce the acceleration of the working machine.Such arrangement, the pilot control assembly provided by the present application, by feedback component responds to the acceleration of the working machine, the spool of the pilot valve is adjusted, to reduce the acceleration of the working machine, so that the start-stop of working machine is more stable.

Description

Technical Field

[0001] This invention relates to the field of work machinery technology, and in particular to a pilot control component, a walking system, and work machinery. Background Technology

[0002] In existing technology, the travel system of skid steer loaders and other operating machinery typically includes a pilot valve, an adjusting cylinder, a travel pump, and a travel motor. The pilot valve is connected to the adjusting cylinder and controls its extension and retraction. The adjusting cylinder is connected to the travel pump and adjusts its displacement. The travel pump is connected to the travel motor and provides pressurized oil to drive the travel motor.

[0003] In actual use, the operator manually manipulates the pilot valve to control its opening, thereby adjusting the extension and retraction of the regulating cylinder. This adjustment of the cylinder then regulates the displacement of the travel pump, ultimately controlling the travel speed of the machinery. During start-up and shutdown, manual operation of the pilot valve can easily cause the valve opening to change too quickly, resulting in rapid start-up and shutdown speeds and unstable movement of the machinery. Summary of the Invention

[0004] This invention provides a pilot control component, a walking system, and a working machine to solve or improve the defect in the prior art where the opening degree of the pilot valve changes too quickly, resulting in a fast start-up and shutdown speed of the working machine, thereby achieving a smooth start-up and shutdown effect for the working machine.

[0005] This invention provides a pilot control component for controlling the movement of a work machine, comprising:

[0006] A pilot valve, wherein the valve opening degree of the pilot valve is adjustable;

[0007] A feedback component is connected to the pilot valve. In response to the acceleration of the working machinery, the feedback component drives the valve core of the pilot valve to move in the direction of closing the pilot valve or opening the pilot valve, so as to reduce the acceleration of the working machinery.

[0008] According to a pilot control component provided by the present invention, the feedback component includes a driving element, an inertial element, and a driving spring;

[0009] The inertial element is movable along the movement direction of the pilot valve core, and the inertial element is connected to the pilot valve core via a corresponding drive spring, and the drive element is connected to the inertial element via a corresponding drive spring.

[0010] According to a pilot control assembly provided by the present invention, an adjusting member is further included for adjusting the compression of the drive spring, the adjusting member being disposed between the drive member and the inertial member or between the inertial member and the valve core of the pilot valve.

[0011] According to a pilot control assembly provided by the present invention, it further includes a handle, a processing unit, and a position detection unit;

[0012] The position detection unit is connected to the handle and is used to detect the position information of the handle. Both the position detection unit and the driving component are connected to the processing unit, and the processing unit controls the operation of the driving component based on the position information.

[0013] According to a pilot control component provided by the present invention, the feedback component includes an acceleration detection unit, a processing unit, and a driving element;

[0014] The drive unit is connected to the valve core of the pilot valve and is used to drive the valve core of the pilot valve to move. The acceleration detection unit is used to detect the acceleration information of the working machine. Both the acceleration detection unit and the drive unit are connected to the processing unit. The processing unit controls the operation of the drive unit based on the acceleration information.

[0015] According to a pilot control component provided by the present invention, a handle and a position detection unit are further included. The position detection unit is connected to the handle and is used to detect the position information of the handle. The position detection unit is connected to the processing unit, and the processing unit controls the action of the drive component based on the position information.

[0016] The present invention also provides a walking system, including a walking motor, a walking pump, an adjusting cylinder, and a pilot control component as described above, wherein the pilot valve, the adjusting cylinder, the walking pump, and the walking motor are connected in sequence.

[0017] According to a walking system provided by the present invention, the walking motor, the adjusting cylinder, the walking pump and the pilot control component are all configured as a pair. The adjusting cylinder, the walking pump and the walking motor are connected in a one-to-one correspondence. The adjusting cylinder is a double-acting cylinder. The first oil port of the pair of adjusting cylinders is connected to the first pilot valve, and the second oil port of the pair of adjusting cylinders is connected to the second pilot valve.

[0018] According to a walking system provided by the present invention, a pair of interlocking units are further included, wherein the first interlocking unit is connected to the first oil port and corresponds to the pilot control component connected to the second oil port, and the second interlocking unit is connected to the second oil port and corresponds to the pilot control component connected to the first oil port. The interlocking unit, in response to the pressure value of the first oil port or the second oil port, restricts the operation of the pilot valve of the corresponding pilot control component.

[0019] The present invention also provides a working machine, including the pilot control component as described above or the walking system as described above.

[0020] The pilot control component provided by the present invention is connected to the pilot valve through a feedback component, and the feedback component can respond to the acceleration of the working machinery and drive the valve core of the pilot valve to move in the direction of closing or opening the pilot valve, so as to reduce the acceleration of the working machinery.

[0021] When the operator opens the pilot valve, the working machine generates acceleration in the same direction as the movement. At this time, the feedback component responds to the acceleration of the working machine and drives the valve core of the pilot valve to move in the direction of closing the pilot valve, thereby reducing the opening degree of the pilot valve, reducing the extension and retraction of the regulating cylinder, thereby reducing the displacement of the travel pump, and further reducing the increase in the speed of the travel motor, ultimately achieving the effect of reducing the acceleration of the working machine.

[0022] When the operator closes the pilot valve, the working machine generates an acceleration in the opposite direction of movement. At this time, the feedback component responds to the acceleration of the working machine and drives the valve core of the pilot valve to move in the direction of opening the pilot valve, thereby increasing the opening degree of the pilot valve, increasing the extension and retraction of the regulating cylinder, thereby increasing the displacement of the travel pump, and thus reducing the speed of the travel motor, ultimately achieving the effect of reducing the acceleration of the working machine.

[0023] With this configuration, the pilot control component provided by the present invention adjusts the valve core of the pilot valve in response to the acceleration of the working machinery through the feedback component, so as to reduce the acceleration of the working machinery and make the start and stop of the working machinery more stable.

[0024] The walking system and working machinery provided by the present invention include all the advantages of the pilot control component mentioned above. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of the first type of pilot control component provided in some embodiments of the present invention;

[0027] Figure 2 This is a schematic diagram of the structure of the second pilot control component provided in some embodiments of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the third pilot control component provided in some embodiments of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the fourth pilot control component provided in some embodiments of the present invention;

[0030] Figure 5 This is a schematic diagram of the walking system provided in some embodiments of the present invention.

[0031] Figure label:

[0032] 1. Pilot valve; 101. Return spring; 2. Drive unit; 3. Handle; 4. Inertia component; 5. Drive spring; 6. Processing unit; 7. Position detection unit; 8. Acceleration detection unit; 9. Locking cylinder; 10. Travel motor; 11. Travel pump; 12. Adjusting cylinder; 13. Overflow valve; 14. First oil port; 15. Second oil port. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0034] The following is combined Figures 1 to 5 The pilot control components provided in the embodiments of the present invention are described.

[0035] Specifically, the pilot control assembly is used to control the movement of the operating machinery, such as controlling the machinery to move forward or backward. The pilot control assembly includes a pilot valve 1 and a feedback assembly.

[0036] The pilot valve 1 has an adjustable valve opening. For example, the pilot valve 1 can be a proportional valve or a throttle valve. Optionally, the pilot valve 1 includes a valve body, a valve core, and a return spring 101, wherein the valve core is disposed within the valve body and slides within the valve body. The two ends of the return spring 101 are connected to the valve body and the valve core, respectively, and the return spring 101 is used to drive the valve core to return to the closed position, that is, the pilot valve 1 is a normally closed valve.

[0037] The feedback component is connected to the pilot valve 1. In response to the acceleration of the working machinery, the feedback component drives the valve core of the pilot valve 1 to move in the direction of closing the pilot valve 1 or opening the pilot valve 1, so as to reduce the acceleration of the working machinery.

[0038] Specifically, when the operator opens the pilot valve 1, the working machine generates acceleration in the same direction as the movement, that is, the working machine accelerates forward or backward. At this time, the feedback component responds to the acceleration of the working machine and drives the valve core of the pilot valve 1 to move in the direction of closing the pilot valve 1, so as to reduce the opening of the pilot valve 1, thereby reducing the extension and retraction of the regulating cylinder 12, thereby reducing the displacement of the travel pump 11, and further reducing the increase in the speed of the travel motor 10, ultimately achieving the effect of reducing the acceleration of the working machine.

[0039] When the operator closes the pilot valve 1, the working machine generates an acceleration in the opposite direction of movement, i.e., the working machine decelerates forward or backward. At this time, the feedback component responds to the acceleration of the working machine and drives the valve core of the pilot valve 1 to move in the direction of opening the pilot valve 1, thereby increasing the opening degree of the pilot valve 1, increasing the extension and retraction of the regulating cylinder 12, thereby increasing the displacement of the travel pump 11, and further reducing the speed reduction of the travel motor 10, ultimately achieving the effect of reducing the acceleration of the working machine.

[0040] With this configuration, the pilot control component provided in this embodiment of the invention adjusts the valve core of the pilot valve 1 in response to the acceleration of the working machinery through the feedback component, so as to reduce the acceleration of the working machinery and make the start and stop of the working machinery more stable.

[0041] refer to Figures 1-2 As shown, in some embodiments provided by the present invention, the feedback component includes a driving element 2, an inertial element 4, and a driving spring 5. The inertial element 4 may be a metal block.

[0042] The inertial element 4 is movable along the movement direction of the valve core of the pilot valve 1, and the inertial element 4 is connected to the valve core of the pilot valve 1 through a corresponding drive spring 5. The drive element 2 is connected to the inertial element 4 through a corresponding drive spring 5.

[0043] Specifically, in actual use, the axial direction of the pilot valve 1 is set along the forward and backward direction of the working machinery. The pilot valve 1 is used to control the forward or backward movement of the working machinery. The inertial element 4 is located at the end of the pilot valve 1 opposite to the direction of movement controlled by the pilot valve 1, and the return spring 101 of the pilot valve 1 is located at the end of the pilot valve 1 facing the direction of movement controlled by the pilot valve 1. For example, if the pilot valve 1 is used to control the forward movement of the working machinery, the inertial element 4 is located at the end of the pilot valve 1 opposite to the forward direction. If the pilot valve 1 is used to control the backward movement of the working machinery, the inertial element 4 is located at the end of the pilot valve 1 opposite to the backward direction.

[0044] In this embodiment, reference is made to Figures 1-2 As shown, taking the pilot valve 1 in the diagram for controlling the forward movement of the working machinery as an example, the principle of pilot valve 1 controlling the backward movement of the working machinery is the same. Specifically, during acceleration, under the operator's control, the drive component 2 acts on the inertial component 4 through the drive spring 5. The inertial component 4, in turn, acts on the valve core of the pilot valve 1 through the drive spring 5, causing the valve opening of the pilot valve 1 to increase, thus accelerating the working machinery. Since the inertial component 4 tends to maintain its current state, it compresses the drive spring 5 between the inertial component 4 and the drive component 2. At this time, the compression of the drive spring 5 between the inertial component 4 and the valve core of the pilot valve 1 decreases, thereby reducing the valve opening of the pilot valve 1 and thus reducing the acceleration of the working machinery.

[0045] During deceleration, under the operator's control, the drive component 2 moves in the reset direction, causing the reset spring 101 to drive the valve core in the reset direction, thereby reducing the valve opening of the pilot valve 1, and the working machine decelerates. The inertial component 4 tends to maintain its current state, causing it to compress the drive spring 5 between itself and the valve core. The drive spring 5 between itself and the valve core drives the valve core to move in the opening direction, thereby increasing the valve opening of the pilot valve 1, and thus reducing the deceleration of the working machine.

[0046] Optionally, a guide structure such as a guide rail or guide groove is provided on the working machine, and the inertial component 4 is slidably mounted on the guide structure.

[0047] In some embodiments provided by the present invention, the pilot control assembly further includes an adjusting member. The adjusting member is used to adjust the compression of the drive spring 5. The adjusting member is disposed between the drive member 2 and the inertial member 4, or between the inertial member 4 and the valve core of the pilot valve 1.

[0048] In this embodiment, if faster acceleration and deceleration of the working machinery is required, i.e., a faster response speed is needed, the preload of the drive spring 5 can be increased by adjusting the component, so that the inertial component 4 requires a higher acceleration to push the pilot valve 1. Conversely, if slower acceleration and deceleration of the working machinery is required, i.e., a smoother and more stable movement is needed, the preload of the drive spring 5 can be reduced by adjusting the component, so that the inertial component 4 requires a lower acceleration to push the pilot valve 1. This configuration makes the pilot control component more flexible in its use and can adapt to more different working scenarios.

[0049] Optionally, the adjusting element is a screw. Taking the adjusting element located between the handle 3 and the inertial element 4 as an example, the handle 3 abuts against the drive spring 5 located between the handle 3 and the inertial element 4 via the adjusting element, and the adjusting element is threadedly connected to the handle 3. By turning the adjusting element to change the length of the adjusting element protruding from the handle 3, the compression of the drive spring 5 between the handle 3 and the inertial element 4 can be adjusted. When the compression of the drive spring 5 between the handle 3 and the inertial element 4 changes, the compression of the drive spring 5 between the inertial element 4 and the valve core also changes.

[0050] refer to Figure 1 As shown, in some embodiments provided by the present invention, the driving component 2 is a handle 3. For example, the handle 3 is slidably or rotatably mounted on the working machinery. The operator can directly drive the inertial component 4 by manipulating the handle 3. With this configuration, the structure of the driving component 2 is simple and the cost is low.

[0051] Of course, the driver 2 is not limited to being set as the handle 3, for example, see reference Figure 2 As shown, in other embodiments provided by the present invention, the driving component 2 can be configured as a proportional electromagnet, a cylinder, a hydraulic cylinder, or an electric cylinder. The pilot control assembly also includes a handle 3, a processing unit 6, and a position detection unit 7.

[0052] The position detection unit 7 is connected to the handle 3 and is used to detect the position information of the handle 3. For example, when the handle 3 is movable, the position detection unit 7 is configured as a displacement sensor to detect the displacement of the handle 3. When the handle 3 is rotatable, the position detection unit 7 is configured as an encoder to detect the rotation of the handle 3.

[0053] Both the position detection unit 7 and the driving component 2 are connected to the processing unit 6, and the processing unit 6 controls the operation of the driving component 2 based on the position information.

[0054] In this embodiment, the operator manipulates the handle 3 to generate a certain amount of movement. The position detection unit 7 acquires the position information of the handle 3, and the processing unit 6 controls the drive component 2 to perform a telescopic movement based on the position information acquired by the position detection unit 7. That is, the movement of the handle 3 is converted into an electrical signal, and then the drive component 2 is controlled to telescopically move based on the electrical signal.

[0055] This configuration eliminates the need to integrate the pilot valve 1 and handle 3. The pilot valve 1 and handle 3 can be separately positioned on the machine, allowing for greater flexibility in their placement. For example, the inertial element 4 and pilot valve 1 can be located at inertial-sensitive parts such as wheels or the frame to improve the accuracy of control by the inertial element 4.

[0056] Of course, the feedback component is not limited to the form of the inertial component 4 described above; for example, reference... Figures 3-4 As shown, in other embodiments provided by the present invention, the feedback component includes an acceleration detection unit 8, a processing unit 6, and a driving element 2.

[0057] The drive unit 2 is connected to the valve core of the pilot valve 1 and is used to drive the valve core of the pilot valve 1 to move. The acceleration detection unit 8 is used to detect the acceleration information of the working machinery. The acceleration information includes the acceleration value and the acceleration direction. For example, the acceleration detection unit 8 can be an acceleration sensor. Both the acceleration detection unit 8 and the drive unit 2 are connected to the processing unit 6, and the processing unit 6 controls the operation of the drive unit 2 based on the acceleration information. The drive unit 2 can be a proportional electromagnet, a cylinder, a hydraulic cylinder, or an electric cylinder.

[0058] In this embodiment, reference is made to Figures 3-4 As shown, taking pilot valve 1 in the diagram as an example of controlling the forward movement of the working machinery, the principle of pilot valve 1 controlling the backward movement of the working machinery is the same. Specifically, during acceleration, under the operator's control, the valve opening of pilot valve 1 increases, and the working machinery accelerates. Acceleration detection unit 8 transmits the acceleration information of the working machinery to processing unit 6. When processing unit 6 determines that the acceleration value of the working machinery exceeds the acceleration threshold, it controls drive component 2 to drive the valve core of pilot valve 1 to move in the closing direction, thereby reducing the valve opening of pilot valve 1 and thus reducing the acceleration of the working machinery.

[0059] During deceleration, under the operator's control, the opening of the pilot valve 1 decreases, causing the working machinery to decelerate. The acceleration detection unit 8 transmits the acceleration information of the working machinery to the processing unit 6. When the processing unit 6 determines that the acceleration value of the working machinery exceeds the acceleration threshold, it controls the drive component 2 to drive the valve core of the pilot valve 1 to move in the opening direction, thereby increasing the opening of the pilot valve 1 and thus reducing the deceleration of the working machinery.

[0060] With this setup, the acceleration detection unit 8 can accurately acquire the acceleration information of the operating machinery, and can more precisely adjust the valve opening of the pilot valve 1 based on the acceleration information of the operating machinery to better meet actual needs.

[0061] Furthermore, by changing the acceleration threshold, the response speed of the operating machinery can be altered, resulting in faster start-up and shutdown or smoother and more stable operation.

[0062] refer to Figure 3 As shown, in some embodiments provided by the present invention, the pilot control assembly further includes a handle 3, which is connected to the valve core of the pilot valve 1 and used to drive the valve core to move. For example, the handle 3 is slidably or rotatably mounted on the working machinery. With this configuration, the pilot control assembly has a simple structure and low cost.

[0063] In this embodiment, the operator manually manipulates handle 3, directly driving the valve core of pilot valve 1. Based on acceleration information, processing unit 6 controls drive unit 2 to adjust the position of the valve core of pilot valve 1, ensuring smooth acceleration or deceleration of the machinery. When the acceleration value is less than an acceleration threshold, processing unit 6 controls drive unit 2 to stop power input. For example, to reduce the impact on handle 3 when drive unit 2 adjusts the valve core, handle 3 is connected to the valve core via a spring.

[0064] Of course, the handle 3 is not limited to the form described above where it directly transmits power to the valve core of the pilot valve 1, for example, refer to Figure 4 As shown, in other embodiments provided by the present invention, the pilot control component further includes a position detection unit 7. The position detection unit 7 is connected to the handle 3 and is used to detect the position information of the handle 3.

[0065] For example, when the handle 3 is movable, the position detection unit 7 is configured as a displacement sensor to detect the displacement of the handle 3. When the handle 3 is rotatable, the position detection unit 7 is configured as an encoder to detect the rotation of the handle 3. Both the position detection unit 7 and the drive unit 2 are connected to the processing unit 6, which controls the operation of the drive unit 2 based on the position information.

[0066] In this embodiment, the operator manipulates the handle 3 to generate a certain amount of movement. The position detection unit 7 acquires the position information of the handle 3, and the processing unit 6 controls the drive component 2 to perform a telescopic movement based on the position information acquired by the position detection unit 7. That is, the movement of the handle 3 is converted into an electrical signal, and then the drive component 2 is controlled to telescopically move based on the electrical signal.

[0067] Specifically, the operator manipulates handle 3, and processing unit 6 first controls drive component 2 to move the valve core based on the position information of handle 3. Then, processing unit 6 controls drive component 2 to adjust the position of valve core of pilot valve 1 based on acceleration information, so that the working machinery can accelerate or decelerate smoothly. After the acceleration value is less than the acceleration threshold, processing unit 6 again controls drive component 2 to move the valve core based on the position information of handle 3.

[0068] With this configuration, there is no need to integrate the pilot valve 1 and the handle 3. The pilot valve 1 and the handle 3 can be arranged separately on the working machine, thus making the arrangement of the pilot valve 1 and the handle 3 more flexible.

[0069] refer to Figure 5 As shown, an embodiment of the present invention also provides a walking system.

[0070] Specifically, the walking system includes a walking motor 10, a walking pump 11, an adjusting cylinder 12, and a pilot control assembly as described above. The pilot valve 1, the adjusting cylinder 12, the walking pump 11, and the walking motor 10 are connected in sequence.

[0071] It should be noted that the walking system includes a pilot control component, and therefore also includes all the advantages of the pilot control component mentioned above, which will not be elaborated further here. In addition, during the start-up and shutdown of the walking system, the pilot control component's adjustment reduces the pressure of the walking pump 11, thereby reducing the leakage flow of the overflow valve 13 and thus reducing the energy loss caused by overflow.

[0072] Furthermore, the travel motor 10, the regulating cylinder 12, the travel pump 11, and the pilot control assembly are all configured as a pair. For example, the pair of travel motors 10 are respectively located on both sides of the working machine, and respectively drive the travel wheels or travel tracks on both sides of the working machine to rotate.

[0073] The regulating cylinder 12, the travel pump 11, and the travel motor 10 are connected in a one-to-one correspondence. The regulating cylinder 12 is a double-acting cylinder; the first oil port 14 of both regulating cylinders 12 is connected to the first pilot valve 1, and the second oil port 15 of both regulating cylinders 12 is connected to the second pilot valve 1. The travel pump 11 is a double-acting pump, and the travel motor 10 is a double-acting motor; the two oil ports of the travel pump 11 are respectively connected to the two oil ports of the travel motor 10.

[0074] In this embodiment, reference is made to Figure 5 As shown, assume that the pilot valve 1 on the left is the first pilot valve 1 and is used to control the forward movement of the working machine, and the pilot valve 1 on the left is the second pilot valve 1 and is used to control the backward movement of the working machine.

[0075] Specifically, when moving forward, the operator manipulates the first pilot valve 1, and the pilot oil enters a pair of regulating cylinders 12 through the first pilot valve 1. The pair of regulating cylinders 12 adjust the displacement of a pair of travel pumps 11, so that a pair of travel motors 10 rotate.

[0076] When reversing, the operator manipulates the second pilot valve 1, and the pilot oil enters a pair of regulating cylinders 12 through the second pilot valve 1. The pair of regulating cylinders 12 extend in the opposite direction to adjust the displacement of a pair of travel pumps 11, so that a pair of travel motors 10 rotate in the opposite direction.

[0077] like Figure 5 As shown, the travel system further includes overflow valves 13. Two overflow valves 13 are connected between the two ports of each travel pump. The inlet of the first overflow valve 13 is connected to the first port of the travel pump, and its outlet is connected to the second port. The inlet of the second overflow valve 13 is connected to the second port of the travel pump, and its outlet is connected to the first port. This configuration ensures that during oil output from either port of the travel pump, a corresponding overflow valve provides overpressure protection.

[0078] In some embodiments provided by the present invention, the walking system further includes a pair of interlocking units.

[0079] The first interlock unit is connected to the first oil port 14 and corresponds to the pilot control component connected to the second oil port 15. The second interlock unit is connected to the second oil port 15 and corresponds to the pilot control component connected to the first oil port 14.

[0080] The interlock unit responds to the pressure at the first port 14 or the second port 15, restricting the operation of the pilot valve 1 of the corresponding pilot control component.

[0081] In this embodiment, for example, referring to Figure 5 As shown, after the first pilot valve 1 opens, the working machinery moves forward, and the pressure at the first port 14 increases. The interlock unit connected to the first port 14 responds to the pressure value of the first port 14 and restricts the operation of the pilot valve 1 of the pilot control component connected to the second port 15. Similarly, after the second pilot valve 1 opens, the working machinery moves backward, and the pressure at the second port 15 increases. The interlock unit connected to the second port 15 responds to the pressure value of the second port 15 and restricts the operation of the pilot valve 1 of the pilot control component connected to the first port 14.

[0082] This configuration, where one pilot valve 1 is activated while the other pilot valve 1 is locked, can prevent the non-activated pilot valve 1 from malfunctioning during the acceleration or deceleration of the working machinery.

[0083] Optionally, corresponding to the feedback assembly configured as the inertial element 4, the interlocking unit includes a locking cylinder 9. The cylinder body of the locking cylinder 9 is connected to the working machinery, and the piston rod of the locking cylinder 9 corresponds to the inertial element 4, that is, the piston rod of the locking cylinder 9 faces the inertial element 4. The rodless chamber of the locking cylinder 9 is connected to the first oil port 14 or the second oil port 15. The locking cylinder 9 can be reset by a spring.

[0084] In this embodiment, when pressure is generated at the first oil port 14 or the second oil port 15, the piston rod of the locking cylinder 9 extends and abuts against the corresponding inertial member 4, thereby locking the inertial member 4.

[0085] Optionally, corresponding to the feedback component configured as acceleration detection unit 8, the interlock unit includes a pressure detection unit. The pressure detection unit is connected to either the first port 14 or the second port 15 and is used to detect the pressure value at either port 14 or the second port 15. For example, the pressure detection unit is a pressure sensor. The pressure detection unit is connected to the processing unit 6 of the pilot control component, which limits the operation of the corresponding pilot valve 1 based on the pressure value.

[0086] In this embodiment, when pressure is generated at the first oil port 14 or the second oil port 15, the pressure detection unit transmits the pressure value to the processing unit 6, and the processing unit 6 restricts the corresponding pilot valve 1 from operating.

[0087] Furthermore, the pair of pilot control components of the walking system can each be equipped with a corresponding processing unit 6. Of course, the pair of processing units 6 of the pair of pilot control components can also be merged into one processing module, that is, the pair of pilot control components share one processing module.

[0088] This invention also provides a working machine.

[0089] Specifically, the operating machinery includes the pilot control components described above or the walking system described above.

[0090] It should be noted that the operating machinery includes pilot control components or a walking system, and therefore also includes the corresponding technical advantages, which will not be elaborated here.

[0091] The operating machinery described in this invention includes, but is not limited to, loaders or excavators.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pilot control component, characterized in that, Used to control the movement of construction machinery, including: Pilot valve (1) and feedback assembly; the valve opening of the pilot valve (1) is adjustable; The feedback component includes a drive element (2), an inertial element (4), and a drive spring (5); the inertial element (4) is movable along the movement direction of the valve core of the pilot valve (1) and responds to the acceleration of the working machine; the inertial element (4) is connected to the valve core of the pilot valve (1) through the corresponding drive spring (5), and the drive element (2) is connected to the inertial element (4) through the corresponding drive spring (5), so that the valve core of the pilot valve (1) moves in the direction of closing the pilot valve (1) or opening the pilot valve (1) to reduce the acceleration of the working machine.

2. The pilot control component according to claim 1, characterized in that, It also includes an adjusting member for adjusting the compression of the drive spring (5), the adjusting member being disposed between the drive member (2) and the inertial member (4), or the adjusting member being disposed between the inertial member (4) and the valve core of the pilot valve (1).

3. The pilot control component according to claim 1, characterized in that, It also includes a handle (3), a processing unit (6) and a position detection unit (7); The position detection unit (7) is connected to the handle (3) and is used to detect the position information of the handle (3). The position detection unit (7) and the drive unit (2) are both connected to the processing unit (6). The processing unit (6) controls the action of the drive unit (2) based on the position information.

4. A pilot control component, characterized in that, Used to control the movement of construction machinery, including: Pilot valve (1) and feedback assembly; the valve opening of the pilot valve (1) is adjustable; The feedback component includes an acceleration detection unit (8), a processing unit (6), and a drive unit (2); the drive unit (2) is connected to the valve core of the pilot valve (1) and is used to drive the valve core of the pilot valve (1) to move; the acceleration detection unit (8) is used to detect the acceleration information of the working machine; the acceleration detection unit (8) and the drive unit (2) are both connected to the processing unit (6); the processing unit (6) controls the drive unit (2) to move based on the acceleration information, so that the valve core of the pilot valve (1) moves in the direction of closing the pilot valve (1) or opening the pilot valve (1) to reduce the acceleration of the working machine.

5. The pilot control component according to claim 4, characterized in that, It also includes a handle (3) and a position detection unit (7). The position detection unit (7) is connected to the handle (3) and is used to detect the position information of the handle (3). The position detection unit (7) is connected to the processing unit (6). The processing unit (6) controls the action of the drive unit (2) based on the position information.

6. A walking system, characterized in that, It includes a travel motor (10), a travel pump (11), an adjusting cylinder (12), and a pilot control assembly as described in any one of claims 1-5, wherein the pilot valve (1), the adjusting cylinder (12), the travel pump (11), and the travel motor (10) are connected in sequence.

7. The walking system according to claim 6, characterized in that, The walking motor (10), the adjusting cylinder (12), the walking pump (11) and the pilot control component are all set as a pair. The adjusting cylinder (12), the walking pump (11) and the walking motor (10) are connected one-to-one. The adjusting cylinder (12) is a double-acting cylinder. The first oil port of the pair of adjusting cylinders (12) is connected to the first pilot valve (1), and the second oil port of the pair of adjusting cylinders (12) is connected to the second pilot valve (1).

8. The walking system according to claim 7, characterized in that, It also includes a pair of interlocking units, wherein the first interlocking unit is connected to the first port and corresponds to the pilot control component connected to the second port, and the second interlocking unit is connected to the second port and corresponds to the pilot control component connected to the first port. The interlocking unit responds to the pressure value of the first port or the second port and restricts the operation of the pilot valve (1) of the corresponding pilot control component.

9. A type of operating machinery, characterized in that, It includes the pilot control component as described in any one of claims 1-5 or the walking system as described in any one of claims 6-8.

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