Control method for a dozing blade device, dozing blade device, and working machine

Abstract

The application relates to the technical field of engineering machinery, and provides a control method of a bulldozing blade device, the bulldozing blade device and a working machine, wherein the bulldozing blade device comprises a fixed blade plate and a movable blade plate, the movable blade plate is lifted relative to the fixed blade plate, and the control method of the bulldozing blade device comprises the following steps: acquiring the current soil quantity on one side of a bulldozing surface of the bulldozing blade device; when the current soil quantity is greater than a soil quantity threshold value and the duration is greater than a first preset time, the movable blade plate is controlled to be lifted; and when the current soil quantity is less than the soil quantity threshold value and the duration is greater than a second preset time, the movable blade plate is controlled to be lowered. In this way, during the working process of the bulldozing blade device, the current soil quantity on one side of the bulldozing surface of the bulldozing blade device is detected in real time, the lifting of the movable blade plate is controlled in real time according to the change condition of the current soil quantity, the height size of the bulldozing surface is adjusted in real time, and the matching degree of the bulldozing capacity of the bulldozing blade device and the bulldozing task quantity can be ensured.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and in particular to a control method for a bulldozer blade device, the bulldozer blade device, and the operating machinery. Background Technology

[0002] A bulldozer blade is a device used in construction machinery to move earth and rock, performing various engineering tasks such as bulldozing, leveling sites, clearing obstacles, repairing roads, and excavating vehicle shelters. For example, some excavators are equipped with a bulldozer blade located on the undercarriage. The height of the bulldozer blade's bulldozing surface is relatively small, mainly to avoid interfering with the rotation of the excavator's upper structure when the blade is raised.

[0003] The height of the bulldozer blade's bulldozing face limits its bulldozing capacity in a single pass. When the bulldozing workload is large, such as when the duration or distance of a single pass is long, the amount of soil accumulated in front of the bulldozer blade becomes too high. During continuous bulldozing, soil will fall from the top of the bulldozer blade backward, resulting in incomplete bulldozing and requiring a second pass, thus affecting bulldozing efficiency.

[0004] Therefore, how to solve the problem that the bulldozing capacity of existing bulldozer blades is not matched with the amount of bulldozing work in some one-off bulldozing operations has become an important technical problem that those skilled in the art need to solve. Summary of the Invention

[0005] This invention provides a control method for a bulldozer blade device, a bulldozer blade device, and operating machinery, to solve the defect in the prior art where the bulldozer blade's bulldozing capacity does not match the bulldozing workload in some one-off bulldozing operations.

[0006] This invention provides a control method for a bulldozer blade device, the bulldozer blade device including a fixed blade and a movable blade, the movable blade being adapted to move up and down relative to the fixed blade, and the control method for the bulldozer blade device including:

[0007] Get the current soil volume on one side of the bulldozer blade's bulldozing face;

[0008] When the current soil volume is greater than a soil volume threshold and the duration of the current soil volume being greater than the soil volume threshold is greater than a first preset time, the movable blade is controlled to rise.

[0009] When the current soil volume is less than the soil volume threshold and the duration of the current soil volume being less than the soil volume threshold is greater than a second preset time, the movable blade is controlled to descend.

[0010] According to a control method for a bulldozer blade device provided by the present invention, the step of obtaining the current soil volume on one side of the bulldozer blade device's bulldozing surface includes:

[0011] Obtain the pressure value at the target location, which is located on the bulldozing surface of the fixed blade;

[0012] When the pressure value at the target location is greater than the preset pressure value, it is determined that the current soil volume is greater than the soil volume threshold.

[0013] When the pressure value at the target location is less than the preset pressure value, it is determined that the current soil volume is less than the soil volume threshold.

[0014] A control method for a bulldozer blade device provided by the present invention further includes:

[0015] Obtain the correspondence between the pressure value borne by the target location and the current soil height on one side of the bulldozing surface of the bulldozing device;

[0016] The current soil height is determined based on the pressure value at the target location and the corresponding relationship.

[0017] Based on the current soil height, determine the target height of the upper edge of the bulldozing surface of the movable blade;

[0018] The lifting height of the movable blade relative to the fixed blade is determined based on the target height of the upper edge of the bulldozing surface of the movable blade.

[0019] The present invention also provides a bulldozer blade device, comprising:

[0020] A fixed blade and a movable blade, wherein the movable blade is slidably connected to the fixed blade;

[0021] A drive mechanism adapted to drive the movable blade plate to slide reciprocally relative to the fixed blade plate;

[0022] A pressure detection element is disposed on one side of the bulldozing surface of the fixed blade, and the pressure detection element is adapted to detect the pressure value borne by the target position on the bulldozing surface of the fixed blade.

[0023] The controller, the drive mechanism and the pressure detection element are both electrically connected to the controller, and the controller is adapted to perform the control method of the bulldozer blade device described above.

[0024] According to the present invention, a bulldozer blade device is provided, wherein the driving mechanism includes:

[0025] A cam is rotatably mounted on the fixed blade plate, and the curved surface of the cam abuts against the lower end of the movable blade plate.

[0026] A driving component is disposed on the fixed blade plate, and the driving component is connected to the cam drive.

[0027] According to a bulldozer blade device provided by the present invention, the fixed blade has an internal cavity, the upper end of the fixed blade is provided with a strip-shaped hole for the movable blade to enter and exit the cavity, and the cam is disposed in the cavity.

[0028] A bulldozer blade device according to the present invention further includes:

[0029] A sealing element is disposed between the sidewall of the strip-shaped hole and the movable blade plate, and the sealing element is adapted to seal the gap between the strip-shaped hole and the movable blade plate.

[0030] A bulldozer blade device according to the present invention further includes:

[0031] A position sensor is provided, adapted to detect the relative position of the movable blade and the fixed blade, and the position sensor is electrically connected to the controller.

[0032] A bulldozer blade device according to the present invention further includes:

[0033] A limiting component is disposed between the fixed blade plate and the movable blade plate, and the limiting component is adapted to limit the extreme sliding position of the movable blade plate relative to the fixed blade plate.

[0034] The present invention also provides a working machine, including a controller, the controller being adapted to perform the control method of the bulldozer blade device described above;

[0035] Alternatively, it may include the aforementioned bulldozer blade device.

[0036] In the control method for a bulldozer blade device provided by this invention, the applicable bulldozer blade device includes a fixed blade and a movable blade, the movable blade being able to rise and fall relative to the fixed blade. The movable blade and the fixed blade jointly participate in the bulldozing operation of the bulldozer blade device. When the movable blade rises relative to the fixed blade, the height of the bulldozing surface of the bulldozer blade device increases; when the movable blade falls relative to the fixed blade, the height of the bulldozing surface of the bulldozer blade device decreases. In the control method for the bulldozer blade device provided by this invention, the current soil volume on one side of the bulldozing surface of the bulldozer blade device is detected in real time, and the rise and fall of the movable blade is controlled according to the current soil volume. If the current soil volume is greater than a soil volume threshold and the duration of the current soil volume being greater than the soil volume threshold is greater than a first preset time, then the movable blade is controlled to rise. If the current soil volume is less than the soil volume threshold and the duration of the current soil volume being less than the soil volume threshold is greater than a second preset time, then the movable blade is controlled to fall. This setup allows for real-time monitoring of the soil volume on one side of the bulldozer blade during operation. Based on changes in soil volume, the height of the movable blade is adjusted to regulate the bulldozer blade's height. This ensures that the bulldozer blade's bulldozing capacity matches the bulldozing workload during a single bulldozing operation, effectively preventing soil from falling backward from the top of the bulldozer blade. Attached Figure Description

[0037] 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.

[0038] Figure 1 This is a flowchart of the control method for the bulldozer blade device provided by the present invention;

[0039] Figure 2 This is a schematic diagram of the bulldozer blade device provided by the present invention when the movable blade is in the lowest position;

[0040] Figure 3 This is a schematic diagram of the bulldozer blade device provided by the present invention from one perspective when the movable blade is in the highest position.

[0041] Figure 4 This is a schematic diagram of the bulldozer blade device provided by the present invention from another perspective when the movable blade is in the highest position.

[0042] Figure 5 This is a schematic diagram showing the relative positions of the cam and the movable blade plate provided by the present invention (part of the structure of the fixed blade plate is hidden in the figure).

[0043] Figure label:

[0044] 1. Fixed blade; 2. Movable blade; 3. Cam; 4. Motor; 5. Gearbox. Detailed Implementation

[0045] 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.

[0046] The following is combined with Figures 1 to 5 The present invention describes a control method for a bulldozer blade device. The applicable bulldozer blade device includes a fixed blade 1 and a movable blade 2, the movable blade 2 being capable of rising and falling relative to the fixed blade 1. The movable blade 2 and the fixed blade 1 work together in the bulldozing operation of the bulldozer blade device. When the movable blade 2 rises relative to the fixed blade 1, the height of the bulldozing surface of the bulldozer blade device increases; when the movable blade 2 falls relative to the fixed blade 1, the height of the bulldozing surface of the bulldozer blade device decreases.

[0047] like Figure 1 and Figure 5 As shown, the control method for the bulldozer blade device provided in this embodiment of the invention can be executed by the control system of the bulldozer blade device or other independent control devices.

[0048] The control method for the bulldozer blade device in this embodiment mainly includes the following steps:

[0049] Step 110: Obtain the current soil volume on one side of the bulldozing surface of the bulldozer blade device;

[0050] Step 120: When the current soil volume is greater than the soil volume threshold and the duration of the current soil volume being greater than the soil volume threshold is greater than a first preset time, control the movable blade to rise; when the current soil volume is less than the soil volume threshold and the duration of the current soil volume being less than the soil volume threshold is greater than a second preset time, control the movable blade to descend.

[0051] In the control method of the bulldozer blade device provided in this embodiment of the invention, the current soil volume on one side of the bulldozer blade device is detected in real time, and the movement of the movable blade 2 is controlled according to the current soil volume. If the current soil volume is greater than a soil volume threshold and the duration of the current soil volume being greater than the soil volume threshold is greater than a first preset time, the movable blade 2 is controlled to rise. If the current soil volume is less than the soil volume threshold and the duration of the current soil volume being less than the soil volume threshold is greater than a second preset time, the movable blade 2 is controlled to descend.

[0052] With this setup, during the operation of the bulldozer blade device, the current soil volume on one side of the bulldozer blade device is detected in real time. Based on the changes in the current soil volume, the lifting and lowering of the movable blade 2 is controlled in real time to adjust the height of the bulldozer blade device's bulldozer blade device. This ensures that the bulldozer blade device's bulldozing capacity matches the bulldozing workload in a single bulldozing operation, and effectively prevents soil from falling backward from the top of the bulldozer blade device.

[0053] The aforementioned one-time bulldozing operation refers to the bulldozing work that begins when the bulldozer blade device descends to the point where the fixed blade 1 contacts the ground and the bulldozing work begins, and ends when the bulldozer blade device rises to the point where the fixed blade 1 loses contact with the ground and the bulldozing work ends. During this entire process, the fixed blade 1 of the bulldozer blade device never loses contact with the ground.

[0054] In this embodiment, the step of obtaining the current soil volume on one side of the bulldozing surface of the bulldozer blade includes:

[0055] Step 111: Obtain the pressure value at the target location, which is located on the bulldozing surface of the fixed blade 1;

[0056] Step 112: When the pressure value at the target location is greater than the preset pressure value, determine that the current soil volume is greater than the soil volume threshold.

[0057] Step 113: When the pressure value at the target location is less than the preset pressure value, determine that the current soil volume is less than the soil volume threshold.

[0058] Understandably, a target position is selected on the bulldozing surface of the fixed blade 1. During the raising and lowering of the movable blade 2 relative to the fixed blade 1, the height of the target position remains constant. The pressure value at the target position increases with the current soil volume. By acquiring the pressure value at the target position in real time, the current soil volume can be determined based on this pressure value.

[0059] When the pressure value at the target location is greater than the preset pressure value, it indicates that the current soil volume is greater than the soil volume threshold; when the pressure value at the target location is less than the preset pressure value, it indicates that the current soil volume is less than the soil volume threshold.

[0060] In some embodiments, the aforementioned soil volume threshold can be a fixed value. In this case, when the current soil volume is greater than the soil volume threshold, the movable blade 2 is controlled to rise to its highest position; when the current soil volume is less than the soil volume threshold, the movable blade 2 is controlled to descend to its lowest position. The soil volume threshold needs to be determined through multiple experiments based on the height of the target location.

[0061] In other embodiments, when controlling the raising and lowering of the movable blade 2, the amount of raising or lowering of the movable blade 2 varies depending on the current soil volume. Furthermore, the soil volume threshold corresponding to the bulldozer blade device differs depending on the height of the movable blade 2. In this case, it is necessary to set different soil volume thresholds for different heights of the movable blade 2, and correspondingly, different preset pressure values ​​need to be set. When determining the relationship between the current soil volume and the soil volume threshold, the current soil volume threshold needs to be determined based on the height position of the movable blade 2.

[0062] In this embodiment, when controlling the lifting and lowering of the movable blade 2, the lifting and lowering height of the movable blade 2 is determined by the current soil volume.

[0063] Specifically, the relationship between the pressure value at the target location and the current soil height on one side of the bulldozing surface of the bulldozer blade is first obtained. With the target location at a constant height, a higher pressure value indicates a higher current soil height and a larger current soil volume on one side of the bulldozer blade; conversely, a lower pressure value indicates a lower current soil height and a smaller current soil volume on one side of the bulldozer blade.

[0064] The relationship between the pressure value at the target location and the current soil height on one side of the bulldozing surface of the bulldozer blade can be determined through multiple tests.

[0065] Based on the pressure value at the target location and the above-mentioned correspondence, the current soil height can be determined.

[0066] During the bulldozing operation, the upper edge of the movable blade 2 needs to be higher than the current soil height by a certain value to ensure that soil on the bulldozing surface of the bulldozer blade does not fall backward from the top of the movable blade 2 as the bulldozer blade continues to bulldoze. Therefore, the target height of the upper edge of the bulldozing surface of the movable blade 2 is determined based on the current soil height.

[0067] By combining the relative positions of the movable blade 2 and the fixed blade 1 at the current moment, and based on the target height of the upper edge of the bulldozing surface of the movable blade 2, the lifting height of the movable blade 2 relative to the fixed blade 1 can be further determined.

[0068] When the bulldozing work is finished or in a non-bulldozing state, the movable blade 2 needs to be lowered to its lowest position. At this time, even if the entire bulldozing device is raised, it can effectively avoid interference of the bulldozing device with the rotation of the excavator's upper part.

[0069] In summary, the control method for the bulldozing device provided in this embodiment of the invention can adaptively adjust the height of the bulldozing surface of the bulldozing device. During the bulldozing operation, it can be adjusted in real time as needed to adapt to different working conditions, exhibiting high timeliness. The bulldozing device has high working efficiency and requires no manual operation.

[0070] On the other hand, based on the same general inventive concept, the embodiments of the present invention also provide a bulldozer blade device, and the bulldozer blade device described below and the control method of the bulldozer blade device described above can be referred to in correspondence with each other.

[0071] Reference Figures 2 to 5 This invention provides a bulldozer blade device, including a fixed blade 1, a movable blade 2, a drive mechanism, a pressure detection element, and a controller.

[0072] Specifically, the fixed blade 1 is used to connect to the target installation position. Taking an excavator as an example, the opposite side of the bulldozing side of the fixed blade 1 is fixedly connected to the undercarriage of the excavator.

[0073] The movable cutting edge 2 is slidably connected to the fixed cutting edge 1, and the movable cutting edge 2 slides vertically relative to the fixed cutting edge 1. When the movable cutting edge 2 slides relative to the fixed cutting edge 1, it rises and falls, thereby adjusting the height of the bulldozing surface of the bulldozer blade device. When the movable cutting edge 2 descends relative to the fixed cutting edge 1, the height of the bulldozing surface of the bulldozer blade device decreases; when the movable cutting edge 2 rises relative to the fixed cutting edge 1, the height of the bulldozing surface of the bulldozer blade device increases.

[0074] The drive mechanism is used to drive the movable blade plate 2 to slide back and forth relative to the fixed blade plate 1, providing power for the lifting and lowering of the movable blade plate 2, and enabling the movable blade plate 2 to be held in a certain position.

[0075] The pressure detection element is set on one side of the bulldozing surface of the fixed blade 1. The pressure detection element is used to detect the pressure value borne by the target position on the bulldozing surface of the fixed blade 1.

[0076] Both the drive mechanism and the pressure detection element are electrically connected to the controller, which is capable of executing the control method of the bulldozer blade device provided in any of the above embodiments.

[0077] During the operation of the bulldozer blade device, the pressure detection element monitors the pressure value borne by the target position of the bulldozing surface of the fixed blade 1 in real time and sends the detected pressure value to the controller. Based on the received pressure signal, the controller determines the current soil volume on one side of the bulldozing surface of the bulldozer blade device. Then, based on the changes in the current soil volume, it controls the operation of the drive mechanism in real time to control the raising and lowering of the movable blade 2 as needed. This allows for real-time adjustment of the height of the bulldozing surface of the bulldozer blade device, ensuring that the current bulldozing capacity matches the bulldozing workload. This effectively prevents soil from falling backward from the top of the bulldozer blade device during a single bulldozing operation.

[0078] The derivation process of the beneficial effects of the bulldozer blade device in the embodiments of the present invention is largely similar to the derivation process of the beneficial effects of the control method of the bulldozer blade device described above, so it will not be repeated here.

[0079] In this embodiment of the invention, the driving mechanism includes a cam 3 and a driving element.

[0080] Cam 3 is mounted on fixed blade plate 1 and is rotatably connected to fixed blade plate 1. The rotation axis of cam 3 relative to fixed blade plate 1 is set in the horizontal direction, and the curved surface of cam 3 abuts against the lower end of movable blade plate 2.

[0081] Understandably, the movable blade 2 is supported by the curved surface of the cam 3. During the rotation of the cam 3 relative to the fixed blade 1, when the cam 3 rotates upwards at its highest point, it pushes the movable blade 2 upwards, causing it to rise. When the cam 3 rotates downwards at its highest point, it allows the movable blade 2 to descend under its own weight. The highest point of the cam 3 refers to the point on the cam 3's profile furthest from the axis of rotation of the cam 3 relative to the fixed blade 1.

[0082] The driving component is mounted on the fixed blade plate 1 and is connected to the cam 3 via a transmission mechanism.

[0083] In a specific embodiment, motor 4 can be selected as the driving component, but is not limited to. When motor 4 is selected as the driving component, a reduction gearbox 5 can be set between motor 4 and cam 3 to make cam 3 rotate at low speed, so that the lifting process of movable blade plate 2 is more stable.

[0084] In this embodiment of the invention, the drive mechanism is set as a cam 3, which is simple in structure and highly adaptable. The operation of the cam 3 is less affected by harsh external environments, which can ensure the stable operation of the bulldozer blade device and extend the service life of the bulldozer blade device.

[0085] The drive mechanism consists of two sets, which are spaced apart along the length of the fixed blade 1. The two sets of drive mechanisms work together to lift and lower the movable blade 2, which reduces the power requirements of the drive mechanism.

[0086] In this embodiment of the invention, a patch pressure sensor is selected as the pressure detection element. A mounting groove is provided at the target position on one side of the bulldozing surface of the fixed blade 1, and the patch pressure sensor is embedded in the mounting groove, with the patch pressure sensor flush with the bulldozing surface of the fixed blade 1.

[0087] In this embodiment, the fixed blade plate 1 has a cavity inside, and a strip hole is provided at the upper end of the fixed blade plate 1, that is, a strip hole is provided on the top wall of the cavity. The length direction of the strip hole is consistent with the length direction of the fixed blade plate 1, so that the movable blade plate 2 can enter and exit the cavity of the fixed blade plate 1.

[0088] The aforementioned cam 3 is located in the receiving cavity of the fixed blade plate 1. In other words, by setting the drive mechanism on the rear side of the bulldozing surface of the fixed blade plate 1, the influence of the soil pushed by the bulldozer blade device on the drive mechanism can be avoided, thus ensuring the stable operation of the bulldozer blade device.

[0089] Specifically, the fixed cutting edge 1 includes a cutting edge body and a back plate. The back plate is disposed on the opposite side of the cutting edge body on the bulldozing side, and there is a gap between the back plate and the cutting edge body to form the aforementioned receiving cavity. The cutting edge body and the back plate are detachably connected together by bolts. A cam 3 is disposed between the cutting edge body and the back plate, and the cam 3 is rotatably connected to the back plate. The motor 4 and the gearbox 5 are disposed on the side of the back plate away from the cutting edge body.

[0090] In this embodiment, the bulldozer blade device also includes a sealing element, which is disposed between the side wall of the strip hole and the movable blade 2, and is used to seal the gap between the strip hole and the movable blade 2.

[0091] During the operation of the bulldozer blade device, soil and other debris can be prevented from entering the cavity of the fixed blade plate 1 through the strip hole, ensuring the cleanliness of the cavity.

[0092] The aforementioned sealing components may include, but are not limited to, sealing brushes or sealing felt strips.

[0093] In this embodiment, the bulldozer blade device also includes a position sensor, which is disposed in the receiving cavity of the fixed blade 1 and is used to detect the relative position of the movable blade 2 and the fixed blade 1.

[0094] The position sensor is electrically connected to the controller. During the process of controlling the raising and lowering of the movable blade plate 2, the position sensor detects the relative position of the movable blade plate 2 and the fixed blade plate 1 in real time to determine whether the movable blade plate 2 has been raised or lowered into place.

[0095] The aforementioned position sensor may be, but is not limited to, a photoelectric displacement sensor.

[0096] In this embodiment of the invention, the bulldozer blade device further includes a limiting component, which is disposed between the fixed blade plate 1 and the movable blade plate 2 to limit the extreme sliding position of the movable blade plate 2 relative to the fixed blade plate 1, so as to prevent the movable blade plate 2 from slipping out of the fixed blade plate 1.

[0097] In a specific embodiment, the limiting component includes a first limiting block and a second limiting block. The first limiting block is disposed on the fixed blade plate 1, and the second limiting block is disposed on the movable blade plate 2, with the second limiting block located below the first limiting block. When the movable blade plate 2 rises relative to the fixed blade plate 1, the second limiting block rises together with the movable blade plate 2, gradually approaching the first limiting block. When the second limiting block abuts against the first limiting block, the movable blade plate 2 rises to its maximum height, at which point the height of the bulldozing surface of the bulldozer blade device is at its maximum.

[0098] There are two sets of limiting components, which are distributed at intervals along the length of the fixed blade plate 1.

[0099] On the other hand, embodiments of the present invention also provide a working machine, including a controller, which is capable of executing the control method for the bulldozer blade device provided in any of the above embodiments, or includes the bulldozer blade device provided in any of the above embodiments. It possesses all the advantages of the control method or bulldozer blade device described above, and will not be repeated here. The derivation process of the beneficial effects of the working machine in the embodiments of the present invention is largely similar to the derivation process of the control method or bulldozer blade device described above, and therefore will not be repeated here.

[0100] The operating machinery in this embodiment may be, but is not limited to, excavators, bulldozers, etc.

[0101] 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 control method for a bulldozer blade device, characterized in that, The bulldozer blade device includes a fixed blade and a movable blade, the movable blade being adapted to move up and down relative to the fixed blade, and the control method of the bulldozer blade device includes: Obtain the current soil volume on one side of the bulldozing surface of the bulldozer blade; When the current soil volume is greater than a soil volume threshold and the duration of the current soil volume being greater than the soil volume threshold is greater than a first preset time, the movable blade is controlled to rise. When the current soil volume is less than the soil volume threshold and the duration of the current soil volume being less than the soil volume threshold is greater than a second preset time, the movable blade is controlled to descend. The soil volume threshold is determined based on the height position of the movable blade, and the lifting height of the movable blade is determined by the current soil volume when controlling the lifting and lowering of the movable blade.

2. The control method for the bulldozer blade device according to claim 1, characterized in that, The method for obtaining the current soil volume on one side of the bulldozing surface of the bulldozing device includes: Obtain the pressure value at the target location, which is located on the bulldozing surface of the fixed blade; When the pressure value at the target location is greater than the preset pressure value, it is determined that the current soil volume is greater than the soil volume threshold. When the pressure value at the target location is less than the preset pressure value, it is determined that the current soil volume is less than the soil volume threshold.

3. The control method for the bulldozer blade device according to claim 2, characterized in that, Also includes: Obtain the correspondence between the pressure value borne by the target location and the current soil height on one side of the bulldozing surface of the bulldozing device; The current soil height is determined based on the pressure value at the target location and the corresponding relationship. Based on the current soil height, determine the target height of the upper edge of the bulldozing surface of the movable blade; The lifting height of the movable blade relative to the fixed blade is determined based on the target height of the upper edge of the bulldozing surface of the movable blade.

4. A bulldozer blade device, characterized in that, include: A fixed blade and a movable blade, wherein the movable blade is slidably connected to the fixed blade; A drive mechanism adapted to drive the movable blade plate to reciprocate relative to the fixed blade plate; A pressure detection element is disposed on one side of the bulldozing surface of the fixed blade, and the pressure detection element is adapted to detect the pressure value borne by the target position on the bulldozing surface of the fixed blade. The controller, wherein the drive mechanism and the pressure detection element are both electrically connected to the controller, and the controller is adapted to perform the control method of the bulldozer blade device as described in any one of claims 1-3.

5. The bulldozer blade device according to claim 4, characterized in that, The drive mechanism includes: A cam is rotatably mounted on the fixed blade plate, and the curved surface of the cam abuts against the lower end of the movable blade plate; A driving component is disposed on the fixed blade plate, and the driving component is connected to the cam drive.

6. The bulldozer blade device according to claim 5, characterized in that, The fixed blade plate has an internal cavity, and the upper end of the fixed blade plate is provided with a strip-shaped hole for the movable blade plate to enter and exit the cavity. The cam is disposed in the cavity.

7. The bulldozer blade device according to claim 6, characterized in that, Also includes: A sealing element is disposed between the sidewall of the strip-shaped hole and the movable blade plate, and the sealing element is adapted to seal the gap between the strip-shaped hole and the movable blade plate.

8. The bulldozer blade device according to claim 4, characterized in that, Also includes: A position sensor is provided, adapted to detect the relative position of the movable blade and the fixed blade, and the position sensor is electrically connected to the controller.

9. The bulldozer blade device according to claim 4, characterized in that, Also includes: A limiting component is disposed between the fixed blade plate and the movable blade plate, and the limiting component is adapted to limit the extreme sliding position of the movable blade plate relative to the fixed blade plate.

10. A type of operating machinery, characterized in that, Includes a controller, said controller being adapted to perform the control method of the bulldozer blade device as described in any one of claims 1-3; Alternatively, it may include the bulldozer blade device as described in any one of claims 4 to 9.

Images