A scraper with adjustable center of gravity and working method thereof

Abstract

The present invention discloses a scraper with an adjustable center of gravity and a working method thereof, which solves the problems in the prior art that the moving range of the counterweight of the scraper is limited and the position of the counterweight cannot be positioned, and has the beneficial effect of realizing locking the counterweight. The specific scheme is as follows: A scraper with an adjustable center of gravity comprises a vehicle body, the vehicle body is provided with a moving mechanism, the vehicle body supports a cab and a working component, a groove is provided at the bottom of the vehicle body along its length direction, a counterweight support is provided at the open part of the groove, the counterweight support is fixedly connected to the bottom of the vehicle body, a linear drive component is installed in the groove, the linear drive component is connected to a moving platform to drive the moving platform along the groove, the moving platform is connected to one side of the counterweight, and a locking component is provided on the other side of the counterweight, the locking component can move toward the side wall of the groove to engage with the side wall of the groove to realize locking of the counterweight.

Description

Technical Field

[0001] The invention relates to the technical field of scraper loaders, in particular to a scraper loader with adjustable center of gravity and a working method thereof. Background Art

[0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art.

[0003] As an important construction machinery, the scraper plays an irreplaceable role in earthwork construction, bulk heavy object shoveling, site leveling, etc. with its high efficiency, practicality and versatility. In order to pursue a larger lifting tonnage, traditional scrapers increase the wheelbase and the weight of the counterweight, making the body too large and unable to enter and exit a relatively narrow working space;

[0004] Chinese patent application CN202322208480.8, named "variable center of gravity loader", was published on February 20, 2024. The loader includes a counterweight, a slide rail and a counterweight drive. The counterweight drive can drive the counterweight to move on the slide rail to adjust the center of gravity of the loader. The counterweight can be driven, but the counterweight is set at the rear of the vehicle, and the movable range is only at the rear of the vehicle, and the range of change of the center of gravity of the whole vehicle is limited; and although the counterweight is driven to move by the counterweight drive, the counterweight is easy to shake or move during the operation of the scraper.

[0005] In addition, the existing scraper still has the following problems:

[0006] The bucket of a traditional scraper is connected to the front of the cab through a single arm. The load-bearing capacity of the single arm is limited, and the bucket at the front makes the front of the scraper bear a large load. If the bucket is lifted too high, the center of gravity of the vehicle will change, and the scraper is prone to rollover. In addition, the single arm of the scraper is equipped with a large arm, and a small arm is arranged in the middle of the large arm, which is controlled by two sets of hydraulic cylinders, and the freedom of movement is limited;

[0007] Traditional fuel-powered scrapers usually use large-displacement diesel engines as their power source in order to achieve greater torque output, which consumes a large amount of fuel energy and also causes environmental pollution due to exhaust gas emissions.

[0008] Although traditional scrapers are four-wheel drive, they do not have a differential lock mechanism. If two wheels get stuck, the vehicle's passability will be affected.

[0009] Traditional loaders have a relatively low cab design to improve trafficability by lowering their height. If loading or unloading trucks or train carriages with high fences, the driver's vision is obstructed and danger may occur.

[0010] When traditional scrapers are used to level the site or load bulk materials, the driver needs to determine the bucket angle and loading weight based on experience, which makes driving difficult.

[0011] All operations of traditional scrapers must be completed by the driver in the vehicle. If demolition work is carried out at high altitude or inside a building, the driver will not be able to escape in time if danger occurs. Summary of the invention

[0012] In view of the deficiencies in the prior art, an object of the present invention is to provide a scraper with an adjustable center of gravity, which can adjust the center of gravity of the vehicle load.

[0013] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0014] A scraper with an adjustable center of gravity comprises a vehicle body, a moving mechanism is arranged on the vehicle body, the vehicle body supports a cab and a working component, a groove is arranged at the bottom of the vehicle body along its length direction, a counterweight support is arranged at the open part of the groove, the counterweight support is fixedly connected to the bottom of the vehicle body, a linear drive component is installed in the groove, the linear drive component is connected to a moving platform to drive the moving platform to move along the groove, the moving platform is connected to one side of a counterweight block, a locking component is arranged on the other side of the counterweight block, the locking component can move toward the side wall of the groove to engage with the side wall of the groove to achieve locking of the counterweight block, and a roller that can move along the counterweight support is arranged on the side of the counterweight block facing the counterweight support.

[0015] In the above-mentioned scraper with adjustable center of gravity, a support plate is provided on one side of the counterweight block facing the counterweight support member, the support plate is provided along the length direction of the vehicle body, a slideway is formed between the two support plates, and the roller is rotatably installed between the two support plates;

[0016] A plurality of slideways may be arranged on one side of the counterweight support, and a plurality of rollers may be arranged in each slideway.

[0017] In the above-mentioned scraper with adjustable center of gravity, the counterweight support is provided with a recess, the roller can move along the recess of the counterweight support, and the slide can move along the recess to ensure the sliding path of the counterweight block;

[0018] The length of the counterweight support member is less than or equal to the length of the groove.

[0019] In the above-mentioned scraper with adjustable center of gravity, the mobile platform is provided with a plurality of guide rods into which the counterweight block can be inserted, and a limiting groove is provided on one side of the counterweight block facing the mobile platform, and one side of the guide rod is inserted into the limiting groove;

[0020] Alternatively, in another embodiment, the mobile platform is fixedly connected to the counterweight.

[0021] In the above-mentioned scraper with adjustable center of gravity, a plurality of locking assemblies are provided on the side of the counterweight away from the mobile platform to ensure stable locking of the counterweight;

[0022] Continuous slots are respectively arranged on the side walls of both sides of the groove. The locking assembly comprises a driving power source and a locking block. The locking block is connected to the driving power source and can be rotated to be locked in the slot.

[0023] In a scraper with an adjustable center of gravity as described above, the working assembly includes two working arms, each of which is respectively arranged on both sides of the cab, one end of the working arm is fixed to the rear side of the vehicle body, and the other ends of the two working arms are connected to one side of the bucket, and the bucket is located at the front side of the vehicle body. The load-bearing capacity of the bucket can be effectively improved by the two working arms.

[0024] A scraper with an adjustable center of gravity as described above, wherein the working arm includes a fixed support member, which is installed on the vehicle body, the fixed support member is movably connected to one end of the bent first arm, the fixed support member is connected to the middle section of the first arm through a first driving member, the other end of the first arm is movably connected to the second arm, a second driving member is arranged at one end of the first arm and the second arm, the other end of the second arm is movably connected to the third arm and the bucket, the middle section of the second arm is movably connected to one end of a connecting rod, the other end of the connecting rod is movably connected to the movable end of the third driving member and one end of the third arm, and the fixed end of the third driving member is movably connected to the second arm.

[0025] In the above-mentioned scraper with adjustable center of gravity, a lifting mechanism is provided between the cab and the vehicle body;

[0026] The working assembly and the vehicle body are both provided with an inclination sensor, and the inclination sensor, the lifting mechanism, the linear drive assembly, the locking assembly and the moving mechanism are all individually connected to the controller;

[0027] The controller is remotely connected to the remote controller.

[0028] In the above-mentioned scraper with adjustable center of gravity, the moving mechanism is a plurality of electric drive wheels; a gravity buffer component is arranged on the upper surface of the vehicle body in front of the cab to buffer the collision between the working assembly and the vehicle body;

[0029] The groove is opened along the rear side of the vehicle body to the front side of the vehicle body along the length direction of the vehicle body, so that the counterweight block can move along the groove to the rear side of the vehicle body to balance the bucket in front of or above the vehicle body.

[0030] In a second aspect, the present invention further provides a working method of a scraper with an adjustable center of gravity, comprising the following contents:

[0031] The linear drive assembly drives the counterweight block to move along the length direction of the groove through the mobile platform. During the movement of the counterweight block, the roller of the counterweight block moves along the counterweight support member;

[0032] After the counterweight moves to the set position, the locking assembly moves toward the side wall of the groove to engage with the side wall of the groove to lock the counterweight.

[0033] The beneficial effects of the present invention are as follows:

[0034] 1) The movable counterweight in the present invention is used to adjust the center of gravity of the scraper, which saves the weight of the counterweight, reduces the total weight of the scraper, and can adjust the center of gravity during dangerous actions; the movable counterweight block is arranged at the bottom of the vehicle, and the movable counterweight block can move along the groove, and the groove is arranged along the length direction of the vehicle to ensure that the movable range of the counterweight block is large; the linear drive assembly is connected to the counterweight block through a mobile platform, and the roller of the counterweight block can move along the counterweight support member, and the counterweight support member and the linear drive assembly cooperate with each other to support the counterweight block, which is beneficial to extend the service life of the linear drive assembly; the locking assembly can be arranged to engage with the side wall of the groove after the counterweight block moves to the set position to lock the position of the counterweight block, so as to avoid the shaking or movement of the counterweight block under complex working conditions.

[0035] 2) In the present invention, a support plate is provided on one side of the counterweight block facing the counterweight support member to form a slideway, and a roller can be installed by providing the support plate. A recess is provided on the counterweight support member, and the width of the slideway is smaller than the width of the recess to ensure the sliding path of the counterweight block. The mobile platform is provided with a guide rod inserted into the counterweight block to achieve traction on the mobile platform, and the main weight of the counterweight block is supported by the counterweight support member, which is beneficial to ensuring the life of the linear sliding assembly. Alternatively, the mobile platform is directly connected to the counterweight block to reduce the weight of the counterweight support member.

[0036] 3) In the present invention, the working component moves from the rear side of the vehicle body to the front side of the vehicle body, which is conducive to the rearward movement of the center of gravity and improves the stability of the scraper. The working component realizes the carrying function of the scraper. The working component cooperates with the movable counterweight block. When the working component is lifted to change the center of gravity of the scraper, the position of the counterweight block can be adjusted to adjust the overall center of gravity and avoid the scraper from tipping over due to excessive lifting. The working component adopts a double-arm structure, which can effectively improve the carrying capacity. Compared with the traditional scraper, the degree of freedom is improved and the working capacity is enhanced. The design of the double-arm structure is conducive to the protection of the cab's field of vision and reduces the problem of field of vision obstruction when the traditional scraper is working. It cooperates with the counterweight block located at the bottom of the vehicle body so that the counterweight block can move along the groove to the rear side of the vehicle body to balance the bucket in front of or above the vehicle body.

[0037] The working component is provided with a first arm, a second arm and a third arm, and three sets of driving parts are provided accordingly, which can realize the rising and falling of the working component and the rotation of the bucket, increase the degree of freedom of control, achieve more posture effects, and complete more difficult loading tasks.

[0038] 4) In the present invention, the vehicle body is provided with an inclination sensor, the controller obtains the inclination angle information of the vehicle body, and controls the actions of the linear drive assembly and the locking assembly, thereby realizing automatic control of the movement of the counterweight block and timely adjusting the center of gravity of the vehicle load. The controller has a remote controller, and the driver can remotely control it outside the vehicle under high-risk working conditions to improve safety.

[0039] 5) The present invention provides a liftable cab. If a vehicle with a high cargo compartment is encountered, the cab can be raised to increase the field of vision. In special circumstances, the cab position can be raised to ensure the field of vision of the cab, thereby ensuring the safety and accuracy of the work.

[0040] 6) The gravity buffer component of the present invention is used to ensure that the scraper does not collide with the vehicle body in the manual operation mode, thereby improving the performance of the scraper.

[0041] 7) The mobile mechanism in the present invention is an electric drive wheel, which is driven by electricity. The controller controls the electric drive wheels separately, so that the rotation speeds of the wheels on both sides are different, so as to achieve steering and turning on the spot. The vehicle has strong passability and high flexibility; it does not consume fuel and reduces environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0043] Figure 1 is a schematic diagram of a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0044] Figure 2 1 is a top view of a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0045] Figure 3 It is a schematic diagram of the arrangement of a counterweight block in a groove of a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0046] Figure 4 It is a schematic diagram of a counterweight support member in a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0047] Figure 5It is a schematic diagram of the arrangement of a roller and a locking assembly at a counterweight block in a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0048] Figure 6 It is a schematic diagram of the arrangement of the limiting grooves of the counterweight block in a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0049] Figure 7 It is a schematic diagram of a linear drive assembly in a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0050] Figure 8 It is a schematic diagram of a working component in a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0051] Fig. 9 It is a schematic diagram of a driving wheel in a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0052] Fig.10 It is a schematic diagram of a lifting mechanism of a scraper with an adjustable center of gravity after being raised according to one or more embodiments of the present invention.

[0053] Fig.11 It is an enlarged schematic diagram of a partial structure of a scraper loader with an adjustable center of gravity according to one or more embodiments of the present invention.

[0054] Fig.12 It is a schematic diagram of a gravity buffer component in a scraper with adjustable center of gravity according to one or more embodiments of the present invention.

[0055] Fig.13 It is a schematic diagram of the connection between the lifting mechanism and the cab floor of a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0056] Fig.14 It is a schematic diagram of the arrangement of a lifting mechanism after removing a cab floor in a scraper with an adjustable center of gravity according to one or more embodiments of the present invention.

[0057] Fig.15 It is a schematic diagram of a lifting mechanism of a scraper with an adjustable center of gravity after it is retracted according to one or more embodiments of the present invention.

[0058] Fig.16 It is a flow chart of a controller in a scraper with an adjustable center of gravity controlling a linear drive component according to a change in the angle of a second inclination sensor according to one or more embodiments of the present invention.

[0059] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0060] Among them: 1. mobile mechanism, 2. vehicle body, 3. working components, 4. cab, 5. lifting mechanism, 6. gravity buffer components;

[0061] 1-1. Travel motor, 1-2. Flange, 1-3. Wheel;

[0062] 2-1. Card slot, 2-2. Counterweight block, 2-3. Screw drive mechanism, 2-4. Limiting member, 2-5. Fixing plate, 2-6. Baffle, 2-7. Counterweight support member, 2-8. Recess, 2-9. Rear cover, 2-10. Pedal, 2-11. Wheel guard frame, 2-12. Headlight, 2-13. Camera;

[0063] 2-21. Double bearing roller, 2-22. Limiting nut, 2-23. Locking block, 2-24. Mounting groove, 2-25. Slideway, 2-26. Roller connecting rod, 2-27. Locking motor, 2-28. Limiting groove;

[0064] 2-31. Driving motor, 2-32. Connecting plate, 2-33. Motor fixing seat, 2-34. Guide rail, 2-35. Lead screw, 2-36. Guide rod, 2-37. Moving platform, 2-38. Fixed frame;

[0065] 3-1. The third arm, 3-2. The fourth connecting pin, 3-3. The connecting rod, 3-4. The third driving member, 3-5. The second arm, 3-6. The third connecting pin, 3-7. The second driving member, 3-8. The protective frame, 3-9. The first driving member, 3-10. The second connecting pin, 3-11. The first connecting pin, 3-12. The first arm, 3-13. The protruding plate, 3-14. The fixed support member, 3-15. The claw, 3-16. The bucket, 3-17. The excavating tooth;

[0066] 4-1. Warning light, 4-2. Cab floor, 4-3. Side panel;

[0067] 5-1. First frame, 5-2. Second frame;

[0068] 6-1. Pressure sensor opening, 6-2. Step;

[0069] 7-1. First inclination sensor, 7-2. Second inclination sensor. DETAILED DESCRIPTION

[0070] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0071] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless otherwise explicitly stated in the present invention, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "include" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof;

[0072] As introduced in the background technology, the counterweight of the scraper loader in the prior art has a limited moving range and cannot be positioned, which makes the counterweight easy to shake or move during the operation of the scraper loader. In order to solve the above technical problems, the present invention proposes a scraper loader with an adjustable center of gravity.

[0073] Embodiment 1

[0074] In a typical embodiment of the present invention, reference is made to Figure 1 As shown, a scraper with an adjustable center of gravity includes a vehicle body 2, a moving mechanism 1 is provided on the vehicle body 2, the vehicle body supports a cab 4 and a working component 3, a groove is provided at the bottom of the vehicle body 2 along its length direction, a counterweight support is provided at the open part of the groove, the counterweight support 2-7 is fixedly connected to the bottom of the vehicle body 2, a linear drive component is installed in the groove, the linear drive component is connected to the moving platform 2-37 to drive the moving platform along the groove, the moving platform 2-37 is connected to one side of the counterweight block 2-2, a locking component is provided on the other side of the counterweight block 2-2, the locking component can move toward the side wall of the groove to engage with the side wall of the groove to achieve locking of the counterweight block 2-2, and a roller that can move along the counterweight support 2-7 is provided on the side of the counterweight block 2-2 facing the counterweight support 2-7.

[0075] Specifically, to ensure the strength of the vehicle body 2 and the arrangement of other structural parts, the groove is opened along the bottom of the vehicle body 2 from the rear side of the vehicle body 2 to the front wheel of the vehicle body 2, and the width of the groove is smaller than the distance between the left and right wheels.

[0076] It is easy to understand that the counterweight block 2-2 is provided with a support plate on one side facing the counterweight support member 2-7, and the support plate is provided along the length direction of the vehicle body 2. Figure 5 As shown, a slide 2-25 is formed between the two support plates, and the roller can be rotatably installed between the two support plates. Specifically, the roller is a double-bearing roller 2-21, and the roller connecting rod 2-26 passes through the double-bearing roller 2-21 and is fixed to the support plate of the slide by a limit nut 2-22; a plurality of slides, such as two slides, can be arranged on the side of the counterweight block 2-2 away from the mobile platform, and a plurality of rollers, such as two rollers, can be arranged in each slide.

[0077] Accordingly, refer to Figure 4As shown, two recesses 2-8 are provided on the inner surface of the counterweight support 2-7 along its length direction, the roller can move along the recess 2-8 of the counterweight support 2-7, and the slide can move along the recess 2-8 to ensure the sliding path of the counterweight block 2-2; the counterweight support 2-7 can close the recess, so that the length of the counterweight support 2-7 is less than or equal to the length of the recess, the counterweight support 2-7 has a set thickness, and is welded and connected to the bottom of the vehicle body 2 to ensure the supporting strength of the counterweight support 2-7.

[0078] In this embodiment, the mobile platform 2-37 is provided with a plurality of guide rods 2-36 into which the counterweight block can be inserted. The function of the guide rods 2-36 is to pull the counterweight block 2-2 so that the counterweight block 2-2 moves along the counterweight support 2-7. Specifically, there may be four guide rods, which are respectively located on both sides of the mobile platform. A limiting groove 2-28 is provided on the side of the counterweight block 2-2 facing the mobile platform. The cross section of the limiting groove 2-28 may be circular. One side of the guide rod 2-36 is inserted into the limiting groove 2-28. The guide rod 2-36 has a set stiffness. Because the counterweight block 2-2 may shake during the operation of the vehicle, in order to prevent the guide rod 2-36 from being broken, the guide rod 2-36 does not engage with the counterweight block 2-2.

[0079] Alternatively, in another example, the mobile platform is fixedly connected to the counterweight 2-2. In this case, the requirements for the linear drive components are relatively high. Multiple sets of linear drive components can be set to connect to the mobile platform 2-37. The multiple sets of linear drive components can be operated simultaneously to drive the movement of the counterweight 2-2 through the mobile platform 2-37.

[0080] refer to Figure 3 and Figure 7 As shown, the linear drive component can select a screw drive mechanism 2-3, and the screw drive mechanism includes a fixed frame 2-38, and the fixed frame 2-38 is fixed to the bottom of the groove. The fixed frame 2-38 supports the screw 2-35, and a connecting plate 2-32 is arranged at one end of the screw. Motor fixing seats 2-33 are arranged at two places of the connecting plate 2-32, and the motor fixing seats 2-33 fix the driving motor 2-31. The cross-section of the fixed frame is U-shaped, and a guide rail 2-34 is arranged on the surface of the fixed frame. The moving platform is installed on the screw 2-35 through a threaded structure, and a slide groove that can be inserted into the guide rail 2-34 is arranged on the side of the moving platform facing the guide rail to ensure the moving path of the moving platform 2-37. Extension plates are arranged on both sides of the bottom of the fixed frame, and the extension plates are provided with openings to be fixedly connected with the bottom of the groove.

[0081] It should be noted that a plurality of locking components are provided on the side of the counterweight block 2-2 away from the mobile platform. The locking components are provided at the four corners of the bottom side of the counterweight block 2-2 and are located outside the slideway to ensure stable locking of the counterweight block.

[0082] refer to Figure 3As shown, continuous slots 2-1 are respectively arranged on the side walls of the groove, and the slots 2-1 are toothed slots. The locking assembly includes a driving power source and a locking block 2-23. The locking block 2-23 is connected to the driving power source, and the locking block can be rotated to be inserted into the slot 2-1. The driving power source can be a locking motor 2-27. The locking block 2-23 is L-shaped. An installation slot 2-24 is arranged on the side of the counterweight block 2-2 away from the moving platform. The driving power source and the locking block 2-23 are both installed in the installation slot 2-24. The width of the locking block 2-23 is adapted to the width of the slot on the side wall of the groove to ensure that the locking block 2-23 can be inserted into the slot 2-1.

[0083] In this embodiment, the working assembly 3 includes two working arms, each of which is respectively arranged on both sides of the cab 4, one end of the working arm is fixed to the rear side of the vehicle body 2, and the other ends of the two working arms are connected to one side of the bucket 3-16. The bucket 3-16 is located on the front side of the vehicle body 2, so that the working arm spans from the rear side of the vehicle body 2 to the front side of the vehicle body 2. The two working arms can effectively improve the carrying capacity of the bucket 3-16.

[0084] refer to Figure 8As shown, the working arm includes a fixed support member 3-14, the fixed support member 3-14 is a fixed block, the bottom of the fixed support member 3-14 is installed on the vehicle body 2, the upper side of the fixed support member 3-14 is connected to one end of the bent first arm 3-12 through a first connecting pin 3-11, the first arm 3-12 is bent downward, and a protective frame 3-8 is arranged at the bottom of the side of the first arm 3-12 away from the fixed support member 3-14, the protective frame 3-8 is connected to the lower side of the fixed support member 3-14 through a first driving member 3-9, and the first driving member 3- The fixed end of the first arm 3-9 is connected to the fixed support 3-14, the telescopic end of the first driving member 3-9 is movably connected to the protrusion of the protective frame 3-8, the first driving member 3-9 is connected to the fixed support 3-14 through the second connecting pin 3-10, the other end of the first arm 3-12 is U-shaped, one end of the second arm 3-5 is set through the U-shaped part of the first arm, the end of the first arm 3-12 away from the fixed support 3-14 is connected to the middle section of the second arm 3-5 through the third connecting pin 3-6, and a protruding plate is set on the upper side of the bending part of the first arm 3-12 3-13, the protruding plate 3-13 is connected to the fixed end of the second driving member 3-7, the movable end of the second driving member 3-7 is movably connected to one end of the second arm 3-5, the other end of the second arm 3-5 is movably connected to the third arm 3-1, a connecting rod 3-3 is arranged between the third arm 3-1 and the second arm 3-5, one end of the connecting rod 3-3 is connected to the middle section of the second arm 3-5, the other end of the connecting rod 3-3 is movably connected to the third arm 3-1 and one end of the third driving member 3-4, and the third arm 3-1 is arranged with one end of the second arm 3-5 There is a third driving member 3-4, the fixed end of the third driving member 3-4 is hingedly installed on one end of the second arm 3-5, the movable end of the third driving member 3-4 is hingedly connected to the connecting rod 3-3 and the third arm 3-1, one end of the third arm 3-1 and the second arm 3-5 is connected to the claw 3-15 through a fourth connecting pin 3-2, the claw 3-15 is fixedly connected to one side of the bucket 3-16, the bucket is turned over by the action of the third driving member 3-4, and a continuous excavation tooth 3-17 is set on the side of the bucket 3-16 away from the claw 3-15;

[0085] The first driving member, the second driving member and the third driving member are all hydraulic cylinders, and each hydraulic cylinder is individually connected to the controller.

[0086] refer to Fig. 9 As shown, the mobile mechanism 1 is specifically a driving wheel connected to the controller, which is used to drive the scraper. Four independent travel motors (hydraulic motors) drive wheels, and the driving wheels specifically include wheels 1-3. Wheels 1-3 are connected to travel motors 1-1 through flanges 1-2. All four drive wheels rotate forward to move forward, and all four drive wheels rotate backward to move backward. The left wheel rotates forward and the right wheel rotates backward to turn right, and the right wheel rotates forward and the left wheel rotates backward to turn left, so that a U-turn can be achieved on the spot; an open slot is set at the bottom of the vehicle body 2, and the travel motor 1-1 of the drive wheel is installed at the open slot. After the travel motor 1-1 is installed, refer to Figure 2 As shown, a fixing plate 2-5 is provided at the opening groove, a baffle 2-6 is provided at the bottom of the vehicle body 2, one side of the baffle 2-6 is rotatably connected to the bottom of the vehicle body 2, and the baffle 2-6 can be fixedly connected to the fixing plate after rotating to the bottom of the fixing plate.

[0087] It is easy to understand that a lifting mechanism 5 is provided between the cab 4 and the vehicle body. Fig.10 , Fig.13 , Fig.14 and Fig.15 As shown, the lifting mechanism 5 is specifically a scissor-type lifting mechanism, a first frame 5-1 is arranged at the bottom of the lifting mechanism 5, a second frame 5-2 is arranged at the top, a side plate 4-3 is fixed to the peripheral side of the second frame 5-2, the side plate 4-3 is located at the peripheral side of the cab bottom plate 4-2, the height of the side plate is higher than the second frame 5-2, the first frame 5-1 is fixedly connected to the vehicle body 2, and can be hidden under the cab bottom plate when the lifting mechanism is retracted, and is shielded by the side plate and will not be exposed;

[0088] It is easy to understand that the structure of the vehicle body 2 can be the same as the existing body structure of the shovel loader. For example, a pedal 2-10 is set on the side of the vehicle body to facilitate the staff to get on and off the vehicle, a rear cover 2-9 is set on the rear side of the vehicle body 2, a wheel protection frame 2-11 is set at the driving wheel of the vehicle body 2, and structural parts such as headlights 2-12 are set on the front and rear sides of the vehicle body 2. The vehicle body 2 is provided with a gravity buffer component 6 on the front side of the cab 4, and the vehicle body 2 is provided with an L-shaped limiter 2-4 on the front side of the cab 4. The gravity buffer component 6 is in the shape of a long strip, and the length of the gravity buffer component 6 is less than or equal to the width of the vehicle body. A convex strip is set on the front side of the vehicle body 2 relative to the limiter 2-4, and the height of the convex strip is less than the height of the gravity buffer component 6. The gravity buffer component 6 is set behind the front limiter 2-4, so that the gravity buffer component 6 is stuck in the opening between the convex strip and the limiter, refer to Fig.12 As shown, a step 6-2 engaged with the limiter is provided on the top side of the gravity buffer component 6, a buffer pad is provided on the step, and a plurality of pressure sensor openings 6-1 are provided on the gravity buffer component 6. The pressure sensor openings 6-1 are used to install pressure sensors to obtain the pressure between the limiter and the gravity buffer component, and can send it to the controller. Mainly, the bucket is arranged on the front side of the vehicle body, and the second arm of the working component is easy to collide with the vehicle body 2. In order to detect the collision in time, the controller is connected to the alarm component such as the warning light 4-1 fixed on the top of the cab 4. When the controller detects that the pressure sensor value is greater than the set value, an alarm can be issued.

[0089] In this embodiment, the gravity buffer component 6 is specifically a rubber block, and a camera 2 - 13 is arranged on the top of the gravity buffer component 6 , and the camera 2 - 13 is connected to the controller.

[0090] In addition, refer to Fig.11As shown, the bucket 3-16 of the working component is provided with a first inclination sensor 7-1, and the first inclination sensor 7-1 is used to obtain the inclination angle information of the bucket and send it to the controller. The vehicle body 2 is provided with a second inclination sensor 7-2 at the horizontal section of the wheel protection frame. Each inclination sensor, lifting mechanism, linear drive assembly, locking assembly and moving mechanism are separately connected to the controller, and the controller can be an existing body controller for a scraper;

[0091] Among them, the inclination sensor is an existing angle meter.

[0092] The controller and the remote controller are remotely connected through wireless signals such as Bluetooth signals or other wireless communication signals. The remote controller can be manually operated for long-distance control. The remote controller is provided with control buttons for controlling each driving wheel of the moving mechanism. The remote controller is provided with a display screen, and the display screen can display the image taken by the camera. The remote controller can also be provided with control buttons for controlling the working components. The remote controller is used to control the scraper. The remote controller improves the convenience of controlling the pure electric scraper.

[0093] In the scraper provided in this embodiment, the bucket in the working assembly is arranged at the rear side of the vehicle body 2, which is conducive to the rearward shift of the center of gravity and improves the stability of the scraper. The handling function of the scraper is realized by the working assembly, the movable counterweight block is located at the lower side of the vehicle body 2, and the gravity buffer component 6 is located at the front side of the vehicle body 2. The working assembly adopts a double-arm structure, which can effectively improve the carrying capacity. Compared with the traditional scraper, the degree of freedom is improved and the working capacity is enhanced. The design of the double-arm structure is conducive to the protection of the cab's field of vision and alleviates the problem of field of vision obstruction when the traditional scraper is working.

[0094] Embodiment 2

[0095] This embodiment discloses a working method of a scraper with adjustable center of gravity, including the following contents:

[0096] Manually control the action of the linear drive assembly so that the linear drive assembly drives the counterweight block 2-2 to move along the length direction of the groove through the mobile platform. During the movement of the counterweight, the roller of the counterweight block moves along the counterweight support 2-7;

[0097] After the counterweight 2-2 moves to the set position, the locking assembly moves toward the side wall of the groove to engage with the side wall of the groove to lock the counterweight 2-2;

[0098] In addition, in some examples, reference Fig.16 As shown, after the working component starts to move, the second inclination sensor obtains the inclination angle information of the vehicle body 2 and sends it to the controller. The controller controls the movement of the linear drive component according to the inclination angle information of the vehicle body 2. After the counterweight block 2-2 moves to the appropriate position, the locking component can engage with the side wall of the groove to lock the counterweight block 2-2.

[0099] In addition, during the operation of the scraper, the value of the pressure sensor will change. When the value of the pressure sensor exceeds the set value, the controller controls the warning light to light up and controls the first driving member to extend to drive the second arm away from the vehicle body.

[0100] When the view in the cab is blocked, the lifting mechanism can be raised to make the cab higher for easier operation;

[0101] Alternatively, each structural member can be controlled by operating a remote controller.

[0102] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A scraper with adjustable center of gravity, characterized in that: The vehicle body comprises a vehicle body, a moving mechanism is arranged on the vehicle body, the vehicle body supports a cab and a working component, a groove is arranged on the bottom of the vehicle body along its length direction, a counterweight support is arranged at the open part of the groove, the counterweight support is fixedly connected to the bottom of the vehicle body, a linear drive component is installed in the groove, the linear drive component is connected to the moving platform to drive the moving platform to move along the groove, the moving platform is connected to one side of the counterweight block, a locking component is arranged on the other side of the counterweight block, the locking component can move toward the side wall direction of the groove to engage with the side wall of the groove to realize locking of the counterweight block, and a roller that can move along the counterweight support is arranged on the side of the counterweight block facing the counterweight support; The mobile platform is provided with a plurality of guide rods into which the counterweight block can be inserted, and a limiting groove is provided on the side of the counterweight block facing the mobile platform, and one side of the guide rod is inserted into the limiting groove, and the guide rod is not engaged with the counterweight block; Alternatively, the mobile platform is fixedly connected to the counterweight; Continuous slots are respectively arranged on the side walls of the groove. The locking assembly comprises a driving power source and a locking block. The locking block is connected to the driving power source and can be rotated to be locked in the slot.

2. The scraper with adjustable center of gravity according to claim 1, characterized in that: A support plate is provided on one side of the counterweight block facing the counterweight support member, the support plate is provided along the length direction of the vehicle body, a slideway is formed between the two support plates, and the roller is rotatably installed between the two support plates; A plurality of slideways may be arranged on one side of the counterweight block, and a plurality of rollers may be arranged in each slideway.

3. The scraper with adjustable center of gravity according to claim 2, characterized in that: The counterweight support is provided with a recessed portion, the roller can move along the recessed portion of the counterweight support, and the slideway can move along the recessed portion; The length of the counterweight support member is less than or equal to the length of the groove.

4. The scraper with adjustable center of gravity according to claim 1, characterized in that: A plurality of locking assemblies are arranged on a side of the counterweight away from the mobile platform.

5. The scraper with adjustable center of gravity according to claim 1, characterized in that: The working assembly includes two working arms, each of which is arranged on both sides of the cab, one end of the working arm is fixed to the rear side of the vehicle body, and the other ends of the two working arms are connected to one side of the bucket, and the bucket is located at the front side of the vehicle body.

6. The scraper with adjustable center of gravity according to claim 5, characterized in that: The working arm includes a fixed support member, which is installed on the vehicle body, the fixed support member is movably connected to one end of the bent first arm, the fixed support member is connected to the middle section of the first arm through a first driving member, the other end of the first arm is movably connected to the second arm, a second driving member is arranged at one end of the first arm and the second arm, the other end of the second arm is movably connected to the third arm and the bucket, the middle section of the second arm is movably connected to one end of a connecting rod, the other end of the connecting rod is movably connected to the movable end of the third driving member and one end of the third arm, and the fixed end of the third driving member is movably connected to the second arm.

7. The scraper with adjustable center of gravity according to claim 1, characterized in that: A lifting mechanism is provided between the cab and the vehicle body; The working assembly and the vehicle body are both provided with an inclination sensor, and the inclination sensor, the lifting mechanism, the linear drive assembly, the locking assembly and the moving mechanism are all individually connected to the controller; The controller is remotely connected to the remote controller.

8. The scraper with adjustable center of gravity according to claim 1, characterized in that: The moving mechanism is a plurality of electric drive wheels; a gravity buffer component is arranged on the upper surface of the vehicle body in front of the cab to buffer the collision between the working assembly and the vehicle body; The groove opens from the rear side of the vehicle body to the front side of the vehicle body along the length direction of the vehicle body.

9. A method for operating a scraper with an adjustable center of gravity according to any one of claims 1 to 8, characterized in that: It includes the following: The linear drive assembly drives the counterweight block to move along the length direction of the groove through the mobile platform. During the movement of the counterweight block, the roller of the counterweight block moves along the counterweight support member; After the counterweight moves to the set position, the locking assembly moves toward the side wall of the groove to engage with the side wall of the groove to lock the counterweight.

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