Bulldozing device for engineering equipment and engineering equipment

Abstract

This application provides a bulldozing device and engineering equipment for use in engineering equipment. The bulldozing device includes a bulldozing arm, a first rocker arm, a second rocker arm, a drive unit, a first tilting mechanism, and a second tilting mechanism. The bulldozing arm, the first rocker arm, and the second rocker arm are oscillatingly mounted on the chassis of the engineering equipment around the same horizontal axis. The drive unit is mounted on the chassis and is adapted to drive the second rocker arm to swing. The first tilting mechanism is mounted on the first rocker arm and connected between the bulldozing arm and the second rocker arm. The second tilting mechanism is mounted on the second rocker arm and connected between the first rocker arm and the drive unit. In response to the swing of the second rocker arm, the second tilting mechanism drives the first rocker arm to swing additionally in the same direction relative to the second rocker arm. In response to the additional swing of the first rocker arm, the first tilting mechanism drives the bulldozing arm to swing additionally in the same direction relative to the first rocker arm, and rotates between a working position close to the ground and a transport position away from the ground.

Description

Technical Field

[0001] This application relates to the field of engineering equipment technology, and more specifically, to a bulldozing device and engineering equipment for use in engineering projects. Background Technology

[0002] With the technological iteration of engineering equipment and the continuous expansion of application scenarios, the requirements for amphibious equipment in terms of surface navigation speed, land operation efficiency, and overall operational reliability are constantly increasing. Currently, the bulldozing mechanisms of amphibious equipment are mostly arranged with the bulldozer arms mounted on both sides of the vehicle. When navigating on the water, the bulldozer arms form a large water-facing section, generating significant water resistance. The existing water guide structures are mostly fixed designs, or require additional drive units for adjustment, making it difficult to simultaneously meet the dual requirements of low-resistance surface navigation and land operation passability, directly restricting the improvement of the equipment's surface speed. At the same time, the bulldozing mechanism needs to frequently perform large-angle flipping switches between land operation and surface navigation / transportation states. The existing flipping scheme using dual-cylinder coordinated drive is no longer suitable for the lightweight, highly integrated, and highly reliable design requirements of high-speed amphibious equipment. Summary of the Invention

[0003] In view of this, embodiments of this application provide a bulldozing device and engineering equipment for use in engineering projects.

[0004] This application provides a bulldozing device for engineering equipment, comprising: a bulldozing arm 1, a drive unit 2, a first rocker arm 3, a second rocker arm 4, a first tilting mechanism 6, and a second tilting mechanism 7. The bulldozing arm 1, the first rocker arm 3, and the second rocker arm 4 are pivotally mounted on a chassis 9 of the engineering equipment about the same horizontal axis. The drive unit 2 is mounted on the chassis 9 and is adapted to drive the second rocker arm 4 to swing. The first tilting mechanism 6 is mounted on the first rocker arm 3 and connected between the bulldozing arm 1 and the second rocker arm 4. The second tilting mechanism 7 is mounted on the second rocker arm 4 and connected between the first rocker arm 3 and the drive unit 2. In response to the swinging of the second rocker arm 4, the second tilting mechanism 7 drives the first rocker arm 3 to additionally swing in the same direction relative to the second rocker arm 4. The first tilting mechanism 6, in response to the additional swinging of the first rocker arm 3, drives the bulldozing arm 1 to additionally swing in the same direction relative to the first rocker arm 3, rotating between a working position near the ground and a transport position away from the ground.

[0005] According to an embodiment of this application, the drive unit 2 is a linear actuator, including a fixed part 21 and an output part 22. One end of the fixed part 21 is rotatably connected to the chassis 9, and the output part 22 is hinged to the second rocker arm 4.

[0006] According to an embodiment of this application, a telescopic mechanism 5 is further included, which is telescopically hinged between the bulldozer arm 1 and the first rocker arm 3 and connected to the first tilting mechanism 6. The telescopic mechanism 5 extends and retracts in response to the drive of the first tilting mechanism 6 to drive the bulldozer arm 1 to tilt.

[0007] According to an embodiment of this application, the second flipping mechanism 7 includes a second sliding sleeve 71, a third connecting rod 72, and a fourth connecting rod 73; the second sliding sleeve 71 is slidably sleeved on the second rocker arm 4; the two ends of the third connecting rod 72 are respectively hinged to the second sliding sleeve 71 and the first rocker arm 3; the two ends of the fourth connecting rod 73 are respectively hinged to the second sliding sleeve 71 and the fixing part 21; in response to the swing of the second rocker arm 4, the fourth connecting rod 73 rotates relative to the second rocker arm 4, causing the second sliding sleeve 71 to slide along the second rocker arm 4, and driving the third connecting rod 72 to rotate relative to it, thereby driving the first rocker arm 3 to generate additional swing in the same direction relative to the second rocker arm 4.

[0008] According to an embodiment of this application, the first flipping mechanism 6 includes a first sliding sleeve 61, a first connecting rod 62, and a second connecting rod 63; the first sliding sleeve 61 is slidably sleeved on the first rocker arm 3; the two ends of the first connecting rod 62 are respectively hinged to the first sliding sleeve 61 and the telescopic mechanism 5; the two ends of the second connecting rod 63 are respectively hinged to the first sliding sleeve 61 and the second rocker arm 4; in response to the additional swing of the first rocker arm 3 relative to the second rocker arm 4, the second connecting rod 63 rotates relative to the first rocker arm 3, causing the first sliding sleeve 61 to slide along the first rocker arm 3, and driving the first connecting rod 62 to rotate relative to it, so as to drive the telescopic mechanism 5 to extend and retract accordingly, and causing the bulldozer arm 1 to generate additional swing in the same direction relative to the first rocker arm 3.

[0009] According to an embodiment of this application, the telescopic mechanism 5 includes an outer tube 51 and a telescopic inner rod 52; one end of the outer tube 51 is hinged to the bulldozer arm 1; the telescopic inner rod 52 is slidably disposed inside the outer tube 51, and its extended end is hinged to the first rocker arm 3.

[0010] According to an embodiment of this application, a water guiding mechanism 8 is further included, disposed on the bulldozer arm 1 and connected to the first rocker arm 3. The water guiding mechanism 8 is configured to respond to additional oscillation of the bulldozer arm 1 relative to the first rocker arm 3, be in a retracted form when the bulldozer arm is in the working position, and be in a water guiding form when the bulldozer arm is in the transport position.

[0011] According to an embodiment of this application, the water guiding mechanism 8 includes a water guiding bottom box 81, a water guiding top box 82, and a water guiding connecting rod 83; the water guiding bottom box 81 is disposed on the water-facing side of the bulldozer arm 1; the water guiding top box 82 is sleeved inside the water guiding bottom box 81, and one end of the water guiding top box 82 is hinged to the water guiding bottom box 81; both ends of the water guiding connecting rod 83 are respectively hinged between the other end of the water guiding top box 82 and the first rocker arm 3; in response to the change in the relative position between the bulldozer arm 1 and the first rocker arm 3, the water guiding connecting rod 83 drives the water guiding top box 82 to swing out or retract relative to the water guiding bottom box 81, thereby realizing the switching between the storage form and the water guiding form.

[0012] According to an embodiment of this application, in the water-guiding configuration, the top water-guiding box 82 extends from the bottom water-guiding box 81, together forming a water-guiding structure that extends outward from the water-facing surface of the bulldozer arm 1 and gradually narrows towards the water-facing direction.

[0013] Another embodiment of this application provides an engineering equipment, including a chassis 9 and a bulldozing device, the bulldozing device being installed on both sides of the chassis 9.

[0014] According to the above configuration, the bulldozer arm, the first rocker arm, and the second rocker arm are hinged around the same horizontal axis. With the help of a single drive unit and the linkage of the first and second tilting mechanisms, the second rocker arm is driven to swing by a single drive unit. The second tilting mechanism and the first tilting mechanism respond in sequence, synchronously driving the first rocker arm relative to the second rocker arm and the bulldozer arm relative to the first rocker arm to complete additional swing in the same direction. This achieves a large-angle smooth tilting of the bulldozer arm between the working position and the transport position, which eliminates the need for the traditional dual-cylinder coordinated drive scheme. This effectively reduces the overall weight of the bulldozer device and greatly simplifies the layout design of the hydraulic circuit, drive valve group, and electrical control circuit. Attached Figure Description

[0015] The above and other objects, features and advantages of this application will become clearer from the following description of embodiments with reference to the accompanying drawings, in which:

[0016] Figure 1 A perspective view of the engineering equipment of this application is shown;

[0017] Figure 2 A side view of the bulldozer arm of this application in the working position is shown;

[0018] Figure 3 A schematic diagram of the mechanism of the bulldozer arm in the working position of this application is shown;

[0019] Figure 4 A side view of the bulldozer arm of this application in the transport position is shown;

[0020] Figure 5 A schematic diagram of the mechanism of the bulldozer arm in the transport position is shown;

[0021] Figure 6 A partial sectional view of the water guiding mechanism of the bulldozer arm in the working position of this application is shown;

[0022] Figure 7 A partial cross-sectional view of the water guiding mechanism of the bulldozer arm in the transport position is shown.

[0023] In the accompanying drawings, the meanings of the reference numerals are as follows:

[0024] 1. Bulldozer arm;

[0025] 2. Drive unit;

[0026] 21. Fixing part;

[0027] 22. Output section;

[0028] 3. First rocker arm;

[0029] 4. Second rocker arm;

[0030] 5. Telescopic mechanism;

[0031] 51. Outer tube;

[0032] 52. Telescopic inner rod;

[0033] 6. First tilting mechanism;

[0034] 61. First sliding sleeve;

[0035] 62. First link;

[0036] 63. Second link;

[0037] 7. Second tilting mechanism;

[0038] 71. Second sliding sleeve;

[0039] 72. Third link;

[0040] 73. Fourth link;

[0041] 8. Water guiding mechanism;

[0042] 81. Water-guiding bottom tank;

[0043] 82. Water diversion top box;

[0044] 83. Water guide rod;

[0045] 9. Chassis;

[0046] 91. Propulsion device. Detailed Implementation

[0047] The embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of this application. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the embodiments of this application for ease of explanation. However, it will be apparent that one or more embodiments may be implemented without these specific details. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concepts of this application.

[0048] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. The terms “comprising,” “including,” etc., as used herein indicate the presence of the stated features, steps, operations, and / or mechanisms, but do not exclude the presence or addition of one or more other features, steps, operations, or mechanisms.

[0049] All terms used herein (including technical and scientific terms) have the meanings commonly understood by those skilled in the art, unless otherwise defined. It should be noted that the terms used herein are to be interpreted in a manner consistent with the context of this specification, and not in an idealized or overly rigid way.

[0050] When using expressions such as "at least one of A, B and C", they should generally be interpreted in accordance with the meaning that is commonly understood by those skilled in the art (e.g., "a system having at least one of A, B and C" should include, but is not limited to, a system having A alone, a system having B alone, a system having C alone, a system having A and B, a system having A and C, a system having B and C, and / or a system having A, B and C, etc.).

[0051] Those skilled in the art will understand that the features described in the various embodiments of this application can be combined and / or combined in various ways, even if such combinations or combinations are not explicitly described in this application. In particular, the features described in the various embodiments of this application can be combined and / or combined in various ways without departing from the spirit and teachings of this application. All such combinations and / or combinations fall within the scope of this application.

[0052] Figure 1 A perspective view of the engineering equipment of this application is shown; Figure 2 A side view of the bulldozer arm of this application in the working position is shown; Figure 3 A schematic diagram of the mechanism of the bulldozer arm in the working position of this application is shown; Figure 4 A side view of the bulldozer arm of this application in the transport position is shown; Figure 5 A schematic diagram of the mechanism of the bulldozer arm in the transport position is shown.

[0053] Embodiments of this application provide a bulldozing device for engineering equipment, such as... Figures 1 to 5 As shown, the equipment includes a bulldozer arm 1, a drive unit 2, a first rocker arm 3, a second rocker arm 4, a first tilting mechanism 6, and a second tilting mechanism 7. The bulldozer arm 1, the first rocker arm 3, and the second rocker arm 4 are pivotally mounted on the chassis 9 of the engineering equipment around the same horizontal axis. The drive unit 2 is mounted on the chassis 9 and is used to drive the second rocker arm 4 to swing. The first tilting mechanism 6 is mounted on the first rocker arm 3 and connected between the bulldozer arm 1 and the second rocker arm 4. The second tilting mechanism 7 is mounted on the second rocker arm 4 and connected between the first rocker arm 3 and the drive unit 2. In response to the swing of the second rocker arm 4, the second tilting mechanism 7 drives the first rocker arm 3 to swing additionally in the same direction relative to the second rocker arm 4. In response to the additional swing of the first rocker arm 3, the first tilting mechanism 6 drives the bulldozer arm 1 to swing additionally in the same direction relative to the first rocker arm 3, and rotates between a working position close to the ground and a transport position that is lifted away from the ground.

[0054] Specifically, the bulldozer arm 1, the first rocker arm 3, and the second rocker arm 4 are hinged to the front end of the chassis 9 via the same hinge axis and can swing independently around the horizontal axis; the two ends of the drive unit 2 are respectively hinged to the chassis 9 and the second rocker arm 4, and are used to output driving force to drive the second rocker arm 4 to swing around the horizontal axis; the second flipping mechanism 7 is a first-stage linkage transmission component, which is connected to the second rocker arm 4, the first rocker arm 3, and the drive unit 2, and is used to synchronously drive the first rocker arm 3 to generate an additional swing in the same direction as the second rocker arm 4 when the second rocker arm 4 swings, thereby realizing the first-stage flipping stroke amplification; the first flipping mechanism 6 is a second-stage linkage transmission component, which is connected to the first rocker arm 3, the bulldozer arm 1, and the second rocker arm 4, and is used to synchronously drive the bulldozer arm 1 to generate an additional swing in the same direction as the first rocker arm 3 when the first rocker arm 3 generates an additional swing, thereby realizing the second-stage flipping stroke amplification.

[0055] Based on the above setup, a three-stage stroke amplification effect is formed through two-stage linkage and unidirectional additional swing, enabling the bulldozer arm 1 to complete a large-angle rotation switch from a bulldozing operation position close to the ground to a water transport position raised and retracted behind the roof of the chassis 9 under the drive of the single drive unit 2. At the same time, it can synchronously drive the water guide mechanism to complete the adaptive form switch of the working condition, realizing the full motion linkage control of a single degree of freedom.

[0056] It should be noted that, in addition to the bulldozing arm 1, the bulldozing device also includes a bulldozing blade hinged to the front end of the bulldozing arm 1, a blade angle adjustment cylinder for adjusting the working posture of the bulldozing blade, and a limiting and buffering assembly for buffering operational impacts, among other functional structures directly involved in the bulldozing operation. The aforementioned bulldozing-related functional structures can adopt mature technical solutions commonly used in this field, and conventional adjustments and replacements of their specific structural forms will not affect the complete implementation of the technical solution of this application or the realization of its core technical effects.

[0057] In some embodiments, mechanical limit blocks are provided at the hinge positions of the chassis 9, corresponding to the working position and transport position of the bulldozer arm 1, respectively, to limit the extreme swing angle of the bulldozer arm 1 and prevent over-travel from causing structural damage.

[0058] According to an embodiment of this application, the transport position of the bulldozer arm 1 is behind the roof of the chassis 9. When the bulldozer arm 1 is flipped to this position, it will not obstruct the driver's driving view. At the same time, it can shift the center of gravity of the whole vehicle to the rear, optimize the head-up posture of the engineering equipment on water, and further improve the speed of water navigation.

[0059] In one illustrative embodiment, such as Figures 1 to 5 As shown, the drive unit 2 is a linear actuator, including a fixed part 21 and an output part 22. One end of the fixed part 21 is rotatably connected to the chassis 9, and the output part 22 is hinged to the second rocker arm 4.

[0060] Specifically, the fixed part 21 is the fixed base of the linear actuator, and its tail is rotatably connected to the chassis 9 frame through a hinge support. The swing angle can be adaptively adjusted with the extension and retraction of the output part 22. The output part 22 is the power output component of the linear actuator. Its extended end is hinged to the arm of the second rocker arm 4 through a hinge shaft. When the output part 22 moves linearly relative to the fixed part 21, it can drive the second rocker arm 4 to swing back and forth around the coaxial hinge axis, providing power input for the entire tilting mechanism.

[0061] In some embodiments, the drive unit 2 is a hydraulic cylinder, the fixing part 21 is the cylinder barrel, and the output part 22 is the cylinder piston rod.

[0062] In some embodiments, the drive unit 2 is an electric push rod, the fixing part 21 is a push rod motor and a reduction gearbox, and the output part 22 is a push rod lead screw, which is adapted to the usage requirements of electric engineering equipment and can achieve precise stroke control.

[0063] In one illustrative embodiment, such as Figures 1 to 5 As shown, it also includes a telescopic mechanism 5, which is telescopically hinged between the bulldozer arm 1 and the first rocker arm 3 and connected to the first tilting mechanism 6. The telescopic mechanism 5 extends and retracts in response to the drive of the first tilting mechanism 6 to drive the bulldozer arm 1 to tilt.

[0064] Specifically, the two ends of the telescopic mechanism 5 are hinged to the body of the bulldozer arm 1 and the body of the first rocker arm 3, respectively. The rod of the telescopic mechanism 5 is hinged to the output end of the first tilting mechanism 6. Under the driving force of the first tilting mechanism 6, it can perform telescopic movement along the axial direction, thereby changing the angle between the bulldozer arm 1 and the first rocker arm 3, driving the bulldozer arm 1 to generate additional swing around the horizontal axis, and realizing the amplification of the tilting stroke.

[0065] In one illustrative embodiment, such as Figures 1 to 5As shown, the telescopic mechanism 5 includes an outer tube 51 and a telescopic inner rod 52; one end of the outer tube 51 is hinged to the bulldozer arm 1; the telescopic inner rod 52 is slidably disposed inside the outer tube 51, and its extended end is hinged to the first rocker arm 3.

[0066] In detail, the outer tube 51 is a hollow tubular structure with one open end, and its closed end is hinged to the body of the bulldozer arm 1; the telescopic inner rod 52 is a solid rod-shaped structure, one end of which is slidably inserted into the inner cavity of the outer tube 51, and the other end is hinged to the body of the first rocker arm 3; the telescopic inner rod 52 can slide back and forth along the inner axis of the outer tube 51, realizing the axial length change of the entire telescopic mechanism 5, thereby changing the included angle between the bulldozer arm 1 and the first rocker arm 3, and driving the bulldozer arm 1 to swing around the coaxial hinge axis.

[0067] In some embodiments, the inner cavity opening end of the outer sleeve 51 is provided with a guide sleeve and a dustproof sealing ring. The guide sleeve is used to ensure the sliding coaxiality of the telescopic inner rod 52 and avoid uneven wear. The dustproof sealing ring is used to isolate external contaminants, protect the sliding mating surface of the inner cavity, and extend the service life of the mechanism.

[0068] In some embodiments, a self-lubricating bushing is provided between the inner cavity of the outer sleeve 51 and the telescopic inner rod 52, which can reduce sliding friction resistance and improve the smoothness of telescopic movement.

[0069] In one illustrative embodiment, such as Figures 1 to 5 As shown, the second flipping mechanism 7 includes a second sliding sleeve 71, a third connecting rod 72, and a fourth connecting rod 73; the second sliding sleeve 71 is slidably sleeved on the second rocker arm 4; the two ends of the third connecting rod 72 are respectively hinged to the second sliding sleeve 71 and the first rocker arm 3; the two ends of the fourth connecting rod 73 are respectively hinged to the second sliding sleeve 71 and the fixing part 21; in response to the swing of the second rocker arm 4, the fourth connecting rod 73 rotates relative to the second rocker arm 4, causing the second sliding sleeve 71 to slide along the second rocker arm 4, and driving the third connecting rod 72 to rotate relative to it, driving the first rocker arm 3 to generate additional swing in the same direction relative to the second rocker arm 4.

[0070] Specifically, the second rocker arm 4 is a straight arm structure extending radially, and the second sliding sleeve 71 is a sleeve structure adapted to the cross-sectional shape of the second rocker arm 4, which can slide back and forth along the length of the arm of the second rocker arm 4; the two ends of the fourth connecting rod 73 are respectively hinged to the outer wall of the second sliding sleeve 71 and the fixing part 21 of the drive unit 2, forming the driving component of the second sliding sleeve 71; the two ends of the third connecting rod 72 are respectively hinged to the outer wall of the second sliding sleeve 71 and the arm of the first rocker arm 3, forming the force transmission component between the second sliding sleeve 71 and the first rocker arm 3.

[0071] When the drive unit 2 drives the second rocker arm 4 to swing around the hinge axis, the angle between the fourth link 73 and the fixed part 21 changes, pulling or pushing the second sliding sleeve 71 to slide along the arm of the second rocker arm 4. The sliding of the second sliding sleeve 71 is converted into the rotational torque of the first rocker arm 3 through the third link 72, driving the first rocker arm 3 to generate an additional swing relative to the second rocker arm 4 in the same swing direction as the second rocker arm 4.

[0072] In some embodiments, the outer surface of the second rocker arm 4 is provided with a guide groove extending along the length direction, and the inner wall of the second sliding sleeve 71 is provided with a guide slider that matches the guide groove. The circumferential rotation of the second sliding sleeve 71 is restricted by the cooperation between the groove and the slider, ensuring that it can only slide along the length direction of the second rocker arm 4, thus avoiding the problem of deflection and jamming of the sliding sleeve.

[0073] In some embodiments, limit stops are provided at both ends of the arm body of the second rocker arm 4 to limit the extreme sliding stroke of the second sliding sleeve 71 and prevent the sliding sleeve from falling off due to excessive travel.

[0074] In one illustrative embodiment, such as Figures 1 to 5 As shown, the first flipping mechanism 6 includes a first sliding sleeve 61, a first connecting rod 62, and a second connecting rod 63. The first sliding sleeve 61 is slidably sleeved on the first rocker arm 3. The two ends of the first connecting rod 62 are respectively hinged to the first sliding sleeve 61 and the telescopic mechanism 5. The two ends of the second connecting rod 63 are respectively hinged to the first sliding sleeve 61 and the second rocker arm 4. In response to the additional swing of the first rocker arm 3 relative to the second rocker arm 4, the second connecting rod 63 rotates relative to the first rocker arm 3, causing the first sliding sleeve 61 to slide along the first rocker arm 3, and driving the first connecting rod 62 to rotate relative to it, so as to drive the telescopic mechanism 5 to extend and retract accordingly, and causing the bulldozer arm 1 to generate additional swing in the same direction relative to the first rocker arm 3.

[0075] Specifically, the first rocker arm 3 is a straight arm structure extending radially, and the first sliding sleeve 61 is a sleeve structure adapted to the cross-sectional shape of the first rocker arm 3, which can slide back and forth along the length of the first rocker arm 3; the two ends of the second connecting rod 63 are respectively hinged to the outer wall of the first sliding sleeve 61 and the arm of the second rocker arm 4, forming the driving component of the first sliding sleeve 61; the two ends of the first connecting rod 62 are respectively hinged to the outer wall of the first sliding sleeve 61 and the rod of the telescopic mechanism 5, forming the force transmission component between the first sliding sleeve 61 and the telescopic mechanism 5.

[0076] When the first rocker arm 3 swings additionally relative to the second rocker arm 4, the angle between the second connecting rod 63 and the first rocker arm 3 changes, pulling or pushing the first sliding sleeve 61 to slide along the arm of the first rocker arm 3. The sliding of the first sliding sleeve 61 is converted into the axial driving force of the telescopic mechanism 5 through the first connecting rod 62, driving the telescopic mechanism 5 to perform telescopic movement, thereby causing the bulldozer arm 1 to swing additionally relative to the first rocker arm 3 in the same direction as the swing of the first rocker arm 3.

[0077] According to the above configuration, through the cooperation structure of the sliding sleeve and the double linkage, the telescopic mechanism 5 can be driven to extend and retract simultaneously while the first rocker arm 3 generates additional swing, thereby driving the bulldozer arm 1 to generate additional swing in the same direction, realizing the amplification of the second-stage flipping stroke. In cooperation with the second flipping mechanism 7, the bulldozer arm 1 can achieve a large-angle flipping of three times the stroke through a single drive unit 2. The pure mechanical linkage structure does not require additional control elements, has high operational reliability, good synchronization, and completely avoids the problem of synchronous control of multiple drive units.

[0078] In some embodiments, the outer surface of the first rocker arm 3 is provided with a guide groove extending along the length direction, and the inner wall of the first sliding sleeve 61 is provided with a guide slider that matches the guide groove. The circumferential rotation of the first sliding sleeve 61 is restricted by the cooperation between the groove and the slider, ensuring that it can only slide along the length direction of the first rocker arm 3, and avoiding the problem of deflection and jamming of the sliding sleeve.

[0079] In some embodiments, limit stops are provided at both ends of the arm body of the first rocker arm 3 to limit the extreme sliding stroke of the first sliding sleeve 61 and prevent the sliding sleeve from falling off due to excessive travel.

[0080] Figure 6 A partial sectional view of the water guiding mechanism of the bulldozer arm in the working position of this application is shown; Figure 7 A partial cross-sectional view of the water guiding mechanism of the bulldozer arm in the transport position is shown.

[0081] In one illustrative embodiment, such as Figure 6 and Figure 7 As shown, it also includes a water guiding mechanism 8, which is disposed on the bulldozer arm 1 and connected to the first rocker arm 3. The water guiding mechanism 8 is configured to respond to the additional swing of the bulldozer arm 1 relative to the first rocker arm 3, and is in a retracted form when the bulldozer arm is in the working position and in a water guiding form when the bulldozer arm is in the transport position.

[0082] It should be noted that the application scenarios of the bulldozing device in this application are not limited to amphibious engineering equipment, but are also applicable to various types of land-based engineering equipment. The water guide mechanism 8 plays a core role in water navigation, effectively reducing the water resistance generated by the bulldozer arm and improving the equipment's water maneuverability. In land-based driving and operation conditions, the water guide mechanism 8 can provide flexible obstacle guidance and protection: its streamlined, convex structure can proactively contact and remove flexible, long, narrow obstacles such as ropes and chains in roads and work areas, effectively preventing such obstacles from entangled in or scraping the bulldozer arm 1 and the articulated transmission parts. Simultaneously, it can prevent gravel and debris from directly impacting the bulldozer arm 1, improving the safety and reliability of land-based driving and operation.

[0083] In some embodiments, the outer surface of the water guiding mechanism 8 is coated with a hydrophobic and wear-resistant coating, which can reduce the frictional resistance between the water flow and the surface of the water guiding mechanism, further improve the drag reduction effect, and at the same time resist the wear and corrosion of mud and sand, extending the service life of the mechanism.

[0084] In some embodiments, when the water guiding mechanism 8 is in its retracted state, the ground clearance of its lowest point is greater than or equal to the minimum ground clearance of the engineering equipment chassis, which completely avoids the risk of scraping during operation and ensures the passability of the engineering equipment for land driving and operation.

[0085] In one illustrative embodiment, such as Figure 6 and Figure 7 As shown, the water guiding mechanism 8 includes a water guiding bottom box 81, a water guiding top box 82, and a water guiding connecting rod 83. The water guiding bottom box 81 is disposed on the water-facing side of the bulldozer arm 1. The water guiding top box 82 is sleeved inside the water guiding bottom box 81, and one end of the water guiding top box 82 is hinged to the water guiding bottom box 81. The two ends of the water guiding connecting rod 83 are respectively hinged between the other end of the water guiding top box 82 and the first rocker arm 3. In response to the change in the relative position between the bulldozer arm 1 and the first rocker arm 3, the water guiding connecting rod 83 drives the water guiding top box 82 to swing out or retract relative to the water guiding bottom box 81, realizing the switching between the storage form and the water guiding form.

[0086] The bottom water-guiding box 81 is a box-shaped structure with an opening on the water-facing side, and is fixed to the water-facing side of the bulldozer arm 1 by fasteners; the top water-guiding box 82 is a box-shaped structure adapted to the inner cavity of the bottom water-guiding box 81, with one end hinged to the open end of the bottom water-guiding box 81, and is housed in the inner cavity of the bottom water-guiding box 81, or can be rotated out from the inner cavity; the two ends of the water-guiding connecting rod 83 are respectively hinged to the movable end of the top water-guiding box 82 and the arm body of the first rocker arm 3, forming the driving component of the top water-guiding box 82.

[0087] When the relative angle between the bulldozer arm 1 and the first rocker arm 3 changes, the angle between the water guide connecting rod 83 and the water guide top box 82 changes synchronously, pulling or pushing the water guide top box 82 to rotate around the hinge axis, realizing the swing extension or retraction from the water guide bottom box 81, and completing the switching between the storage form and the water guide form.

[0088] According to the above configuration, through the cooperation of the bottom water guide box 81, the top water guide box 82 and the water guide connecting rod 83, the form switching of the water guide mechanism 8 can be automatically completed as the relative position of the bulldozer arm 1 and the first rocker arm 3 changes. In the retracted state, the top water guide box 82 is completely retracted into the bottom water guide box 81, which can maximize the ground clearance. In the extended state, the top water guide box 82 and the bottom water guide box 81 cooperate to form a complete water guide structure, achieving a good drag reduction effect.

[0089] In some embodiments, both the bottom water guide box 81 and the top water guide box 82 are made of stainless steel and welded together. They have excellent structural strength, impact resistance and corrosion resistance, and can withstand the impact of water flow, sand and gravel abrasion and corrosive media during water navigation and land operations, thus extending the service life of the mechanism.

[0090] In some embodiments, the opening end of the bottom water-conducting tank 81 is provided with a sealing strip. When the top water-conducting tank 82 is fully retracted, the sealing strip can seal the gap between the top tank and the bottom tank, preventing mud and sand from entering the tank and causing jamming.

[0091] In one illustrative embodiment, such as Figure 1 As shown, in the water-guiding configuration, the top water-guiding box 82 extends from the bottom water-guiding box 81, together forming a water-guiding structure that extends outward from the water-facing surface of the bulldozer arm 1 and gradually narrows towards the water-facing direction.

[0092] When the top water guide box 82 is fully extended, its outer wall smoothly transitions with the outer wall of the bottom water guide box 81, together forming a streamlined water guide structure with a gradually changing cross-section that is narrow at the water-facing end and wide near the bulldozer arm end. The water-facing end of this structure faces the direction of the engineering equipment's water navigation, which can guide and tidy up the water flow during water navigation, allowing the water flow to flow smoothly along the outer surface of the water guide structure and avoiding the formation of turbulence and eddies on the water-facing surface of the bulldozer arm.

[0093] In some embodiments, the sealed cavity formed by the bottom water guide box 81 and the top water guide box 82 is filled with closed-cell foam material, which can prevent water accumulation in the cavity from increasing the weight of the device, and at the same time provide additional buoyancy reserves for engineering equipment, thereby improving the safety and anti-sinking ability of water navigation.

[0094] Embodiments of this application also provide an engineering equipment, such as Figures 1 to 5 As shown, it includes a chassis 9; at least one bulldozing device, which is mounted on one side of the chassis 9.

[0095] Specifically, the bulldozing device is symmetrically installed on the left and right sides of the chassis 9 via a hinge shaft and a drive support. The drive unit 2 of the bulldozing device is connected to the power system of the chassis 9 and can be uniformly controlled by the control system to realize the flipping and switching of the bulldozing arm 1 and the bulldozing operation.

[0096] In some embodiments, two sets of bulldozing devices are symmetrically installed on the left and right sides of the chassis 9. The drive units 2 of the two sets of bulldozing devices share the same hydraulic control system, which can realize synchronous action and ensure that the rotation of the bulldozing arms on the left and right sides is completely synchronized with the operation action, thus avoiding the problem of uneven force on one side.

[0097] In some embodiments, the engineering equipment is a new type of amphibious engineering vehicle. The rear of the chassis 9 is equipped with a propeller or other propulsion device 91, which enables high-speed navigation on the water surface. When the bulldozer arm 1 of the bulldozer device is in the transport position, it flips to the rear of the chassis 9, which can optimize the center of gravity distribution of the whole vehicle and further improve the speed and stability of navigation on the water surface in conjunction with the propulsion device 91.

[0098] In some embodiments, chassis 9 serves as a universal load-bearing base for engineering equipment, and can be flexibly adapted to amphibious equipment chassis or various land-based engineering equipment chassis such as bulldozers, loaders, and graders, depending on the application scenario. When adapted as an amphibious equipment chassis, chassis 9 integrates a land-based walking mechanism, a water jet propulsion device 91, a power system, and a control system, enabling dual-mode operation of land travel and water navigation. When adapted as a land-based engineering equipment chassis, chassis 9 integrates a corresponding land-based walking mechanism, a power system, and a control system, only needing to meet the functional requirements of land travel and engineering operations.

[0099] The embodiments of this application have been described above. However, these embodiments are merely illustrative and not intended to limit the scope of this application. Although various embodiments have been described above, this does not mean that the measures in the various embodiments cannot be used advantageously in combination. Without departing from the scope of this application, those skilled in the art can make various substitutions and modifications, all of which should fall within the scope of this application.

Claims

1. A bulldozing device for engineering equipment, characterized in that, include: The bulldozing arm, the first rocker arm, and the second rocker arm are oscillatingly mounted on the chassis of the engineering equipment around the same horizontal axis; A drive unit, disposed on the chassis, is adapted to drive the second rocker arm to swing. A first tilting mechanism is disposed on the first rocker arm and connected between the bulldozer arm and the second rocker arm; The second flipping mechanism is disposed on the second rocker arm and connected between the first rocker arm and the drive unit; The second flipping mechanism responds to the swing of the second rocker arm and drives the first rocker arm to swing additionally in the same direction relative to the second rocker arm; The first tilting mechanism responds to the additional oscillation of the first rocker arm, driving the bulldozer arm to oscillate additionally in the same direction relative to the first rocker arm, tilting between a working position close to the ground and a transport position lifted away from the ground.

2. The bulldozing device according to claim 1, characterized in that, It also includes a telescopic mechanism that is telescopically hinged between the bulldozer arm and the first rocker arm and connected to the first tilting mechanism. The telescopic mechanism extends and retracts in response to the drive of the first tilting mechanism to drive the bulldozer arm to tilt.

3. The bulldozing device according to claim 2, characterized in that, The drive unit is a linear actuator, including a fixed part and an output part. One end of the fixed part is rotatably connected to the chassis, and the output part is hinged to the second rocker arm.

4. The bulldozing device according to claim 3, characterized in that, The second flipping mechanism includes: The second sliding sleeve is slidably fitted onto the second rocker arm; The third link is hinged at both ends to the second sliding sleeve and the first rocker arm, respectively. The fourth link is hinged at both ends to the second sliding sleeve and the fixed part, respectively; In response to the swing of the second rocker arm, the fourth link rotates relative to the second rocker arm, causing the second sliding sleeve to slide along the second rocker arm, and driving the third link to rotate relative to it, thereby driving the first rocker arm to produce an additional swing in the same direction relative to the second rocker arm.

5. The bulldozing device according to claim 4, characterized in that, The first flipping mechanism includes: The first sliding sleeve is slidably fitted onto the first rocker arm; The first connecting rod is hinged at both ends to the first sliding sleeve and the telescopic mechanism, respectively. The second connecting rod is hinged at both ends to the first sliding sleeve and the second rocker arm, respectively. In response to the additional oscillation of the first rocker arm relative to the second rocker arm, the second link rotates relative to the first rocker arm, causing the first sliding sleeve to slide along the first rocker arm and drive the first link to rotate relative to it, thereby driving the telescopic mechanism to extend and retract accordingly, and causing the bulldozer arm to generate additional oscillation in the same direction relative to the first rocker arm.

6. The bulldozing device according to claim 3, characterized in that, The telescopic mechanism includes: The outer sleeve is hinged at one end to the bulldozer arm; The telescopic inner rod is slidably disposed inside the outer sleeve, and its extended end is hinged to the first rocker arm.

7. The bulldozing device according to any one of claims 1-6, characterized in that, It also includes a water guiding mechanism disposed on the bulldozer arm and connected to the first rocker arm. The water guiding mechanism is configured to respond to additional oscillation of the bulldozer arm relative to the first rocker arm, to be in a retracted form when the bulldozer arm is in the working position, and to be in a water guiding form when the bulldozer arm is in the transport position.

8. The bulldozing device according to claim 7, characterized in that, The water guiding mechanism includes: A water-guiding bottom box is installed on the water-facing side of the bulldozer arm; A water-guiding top box is fitted inside the water-guiding bottom box, and one end of the water-guiding top box is hinged to the water-guiding bottom box; The water guide rod is hinged at both ends to the other end of the water guide top box and the first rocker arm, respectively. In response to the change in the relative position between the bulldozer arm and the first rocker arm, the water guide linkage drives the water guide top box to swing out or retract relative to the water guide bottom box, thereby switching between the storage form and the water guide form.

9. The bulldozing device according to claim 8, characterized in that, In the described water-guiding configuration, the top water-guiding box extends from the bottom water-guiding box, together forming a water-guiding structure that extends outward from the water-facing surface of the bulldozer arm and gradually tapers towards the water-facing direction.

10. An engineering equipment, characterized in that, include: Chassis; The bulldozing device as described in any one of claims 1 to 9, wherein the bulldozing device is symmetrically installed on both sides of the chassis.

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