Bulldozer automatic leveling device with GPS positioning function and construction method

Abstract

The invention discloses a bulldozer automatic leveling device with a GPS positioning function and a construction method, and relates to the field of engineering mechanical equipment.The bulldozer automatic leveling device comprises a bulldozer body, a main scraper knife and two connecting pieces, the connecting pieces are used for supporting the main scraper knife, and two oil cylinders are arranged at the upper end of the bulldozer body; the two oil cylinders are located on the two sides, in the width direction, of the bulldozer body correspondingly, two first rotating rods are hinged to the side, close to the bulldozer body, of the main scraper knife, two second rotating rods are hinged to the side, close to the main scraper knife, of the bulldozer body, and adjusting pieces are arranged between the first rotating rods and the second rotating rods. The adjusting part is used for limiting the relative position relation between the first rotating rod and the second rotating rod, one end of the oil cylinder is hinged to the bulldozer body, the output end of the oil cylinder is hinged to the second rotating rod, and a detection part is arranged on the side, close to the bulldozer body, of the main scraper knife and used for detecting the distance between the main scraper knife and the ground. The method has the effect of improving the construction efficiency of the bulldozer.

Description

Technical Field

[0001] This application relates to the field of engineering machinery and equipment, and in particular to an automatic leveling device for bulldozers with GPS positioning and a construction method thereof. Background Technology

[0002] Currently, bulldozers are used for leveling and paving the ground with high precision. Therefore, a certain leveling accuracy is required. During operation, the operator needs to control the distance between the blade and the ground to a preset value in advance. Once the adjustment is complete, the bulldozer moves forward to level the ground.

[0003] Related technology can be found in Chinese patent application CN114032983B, which discloses a blade device and a bulldozer. The blade device includes a blade, a locking assembly, a connecting assembly, and a drive assembly. The blade comprises a blade body and two auxiliary blades, each hinged to one end of the blade body. The auxiliary blades have a first position located at the end of the blade body along its length and a second position located at the upper end of the blade body along its height. The locking assembly locks the auxiliary blades in either the first or second position. The connecting assembly rotatably connects the blades to the vehicle body. The drive assembly drives the connecting assembly to move the blades closer to or away from the surface being shoveled. This blade device allows for adjustment of the blade length according to actual working conditions, improving its practicality and versatility, increasing its working efficiency, facilitating passage through narrow areas, and aiding in transportation.

[0004] Regarding the aforementioned technologies, the shovel device can adjust its working range according to the width of the area. However, during the process of leveling the ground, it is necessary to maintain a certain distance between the shovel and the ground. During the adjustment process, the extension and retraction values ​​of the hydraulic cylinder need to be repeatedly adjusted, which consumes a lot of time and results in low construction efficiency. Summary of the Invention

[0005] To improve the construction efficiency of bulldozers, this application provides an automatic leveling device for bulldozers with GPS positioning and a construction method thereof.

[0006] In the first aspect, this application provides an automatic leveling device for bulldozers with GPS positioning, which adopts the following technical solution: An automatic leveling device for a bulldozer with GPS positioning includes a bulldozer body, a main blade, and two connecting parts. The length of the main blade is greater than the width of the bulldozer body. The two connecting parts are located between the bulldozer body and the main blade, on both sides of the bulldozer body along its width. The connecting parts support the main blade. Two hydraulic cylinders are located on the upper part of the bulldozer body, on both sides of the bulldozer body along its width. Two first rotating rods are hinged to the side of the main blade closest to the bulldozer body, and two... The first rotating rod, the second rotating rod, and the hydraulic cylinder are all in one-to-one correspondence. An adjusting component is provided between the first rotating rod and the second rotating rod to limit their relative positional relationship. The second rotating rod and the first rotating rod are both inclined from bottom to top along the direction of the bulldozer body pointing towards the main blade. One end of the hydraulic cylinder is hinged to the bulldozer body, and the output end of the hydraulic cylinder is hinged to the second rotating rod. A detection component is provided on the side of the main blade near the bulldozer body to detect the distance between the main blade and the ground.

[0007] By adopting the above technical solution, the connector is used to connect the bulldozer body and the main blade and to support the main blade. When the ground needs to be leveled, the hydraulic cylinder drives the second rotating rod to rotate. The second rotating rod and the adjusting component work together to drive the first rotating rod to rotate, thereby raising and lowering the main blade. During the raising and lowering of the main blade, the detection component identifies and detects the distance between the main blade and the ground. When the distance between the main blade and the ground reaches the preset value, the adjusting component locks the first and second rotating rods to position the main blade. This helps to reduce the frequency of repeatedly adjusting the height of the main blade and improves the construction efficiency of the bulldozer.

[0008] Optionally, the connecting component includes a first rotating rod and a second rotating rod, which correspond one-to-one. One end of the first rotating rod is hinged to the bulldozer body, and the other end of the first rotating rod is hinged to the side of the main blade near the bulldozer body. The second rotating rod is located at the upper end of the first rotating rod, and the lower end of the second rotating rod is hinged to the first rotating rod. The upper end of the second rotating rod is hinged to the side of the main blade near the bulldozer body.

[0009] By adopting the above technical solution, the first rotating rod is used to connect the bulldozer body and the main blade. The first rotating rod and the second rotating rod work together to limit the main blade, which helps to reduce the probability of the main blade rotating and improves the stability of the bulldozer operation.

[0010] Optionally, the detection component includes two fixed cylinders and two GPS signal receivers, with each fixed cylinder and GPS signal receiver corresponding to the other. Both fixed cylinders are vertically fixed to the side of the main blade near the bulldozer body and are located between the two first rotating rods. The GPS signal receivers are vertically arranged, and the lower end of the GPS signal receivers is detachably connected to the inside of the fixed cylinders.

[0011] By adopting the above technical solution, the fixed cylinder fixes the GPS signal receiver, the GPS signal receiver identifies and detects the distance between the main blade and the ground, and feeds the information back to the terminal, which improves the convenience of main blade position detection.

[0012] Optionally, the adjusting component includes a first support block, a second support block, a first motor, a lead screw, a first gear ring, and a second gear ring. The first support block is fixedly connected to the side of the second rotating rod away from the bulldozer body. The second support block is slidably connected to the side of the second rotating rod away from the bulldozer body. The second support block can move towards or away from the first support block. The end of the first rotating rod away from the main blade is located between the first and second support blocks and is rotatably connected to the first support block. The first motor is fixedly connected to the side of the first support block away from the second support block. The lead screw is coaxially fixedly connected to the output shaft of the first motor. The lead screw is rotatably connected to the first support block and the first rotating rod. The lead screw is threadedly connected to the second support block. The first gear ring is fixedly connected to the side of the second support block near the first support block. The second gear ring is fixedly connected to the side of the first rotating rod near the second support block. The first and second gear rings face each other, and the lead screw is located at the center of the first and second gear rings.

[0013] By adopting the above technical solution, the second rotating rod supports the first support block, and the first support block supports the end of the first rotating rod away from the main blade. When the first rotating rod rotates, it drives the second gear ring to rotate. When the distance between the main blade and the ground reaches a preset value, the first motor drives the lead screw to rotate, the second support block moves closer to the first support block, and the first gear ring meshes with the second gear ring. The first gear ring and the second gear ring cooperate to limit the rotation of the first rotating rod. At this time, the hydraulic cylinder continues to work, and the main blade makes a circular motion around the hinge point between the second rotating rod and the bulldozer body. Due to the limitation of the first rotating rod, the movement of the main blade is restricted at this time, and the main blade is in a fixed position, which improves the convenience of positioning the main blade.

[0014] Optionally, secondary blades are hinged to both sides of the upper end of the main blade along the length direction. The secondary blades can be flipped to one side of the main blade along the length direction. Two arc-shaped racks are slidably connected to the side of the main blade near the bulldozer body. The two arc-shaped racks are located on both sides of the main blade along the length direction. The upper ends of the arc-shaped racks are fixedly connected to the sides of the two secondary blades that are far apart from each other. Two second motors are fixedly installed on the side of the main blade near the bulldozer body. Gears are fixedly installed coaxially on the output shafts of the second motors. The gears mesh with the arc-shaped racks.

[0015] By adopting the above technical solution, when a wider area of ​​ground needs to be bulldozed at once, the second motor and gear work together to drive the arc rack to move. The movement of the arc rack drives the secondary blade to rotate and is spliced ​​on both sides of the main blade along the length direction, which improves the convenience of adjusting the working range of the bulldozer.

[0016] Optionally, a connecting rod is fixedly connected to the upper end of each of the two auxiliary blades near the bulldozer body. The connecting rod is arranged along the length of the main blade. A first guide block is fixedly installed on the side of the connecting rod away from the bulldozer body. The first guide block is located at the end of the connecting rod away from the auxiliary blade. A buffer plate is provided on the side of the connecting rod away from the bulldozer body. The buffer plate is slidably connected to the connecting rod along the length of the connecting rod. The buffer plate is located on the side of the first guide block near the auxiliary blade. A first spring is provided between the first guide block and the buffer plate. The two ends of the first spring are fixed to the first guide block and the buffer plate, respectively. The connection includes two second guide blocks on the side of the main blade near the bulldozer body. The second guide blocks are slidably connected to the main blade along its thickness direction. A second spring is provided between the second guide blocks and the main blade. In its natural state, the second spring pushes the second guide blocks to move away from the main blade. When the two auxiliary blades are located on both sides of the main blade, the side of the buffer plate away from the first guide block is in contact with the second guide block. Two moving parts are provided on the side of the main blade near the second guide blocks. The moving parts correspond one-to-one with the second guide blocks and are used to separate the second guide blocks from the buffer plate.

[0017] By adopting the above technical solution, the connecting rod supports the first guide block and the buffer plate. During the flipping process of the secondary blade, the first guide block first contacts the second guide block. The first guide block drives the second guide block to move towards the main blade and compresses the second spring. When the secondary blade is assembled, the second spring drives the second guide block to reset. At this time, the buffer plate is in contact with the second guide block, and the first spring makes the buffer plate in contact with the second guide block. When it is necessary to retract the secondary blade, the moving part drives the second guide block to move towards the main blade, which helps to reduce the probability of the second guide block obstructing the movement of the first guide block. The gear and the arc rack work together to position the secondary blade. At the same time, the buffer plate and the second guide block abut against each other, which also positions the secondary blade, further improving the convenience of positioning the secondary blade.

[0018] Optionally, the moving parts include a first slider, a second slider, a flap, a third spring, a first guide rod, a second guide rod, a limiting plate, and a lever. The first slider is located directly above the second guide block and is slidably connected to the main shovel along its length. The flap is rotatably connected to the side of the first slider away from the main shovel and is perpendicular to the first slider. The limiting plate is fixedly connected to the side of the first slider away from the main shovel and is in contact with the side of the flap away from the first rotating rod. The third spring is located between the first slider and the flap. In its natural state, the third spring pushes the flap closer to the limiting plate. The second slider is located between the second guide block and the first slider. Between them, the second slider is slidably connected to the main blade vertically. The first guide rod is located between the first slider and the second slider. One end of the first guide rod is hinged to the first slider, and the other end of the first guide rod is hinged to the second slider. The second guide rod is located between the second slider and the second guide block. One end of the second guide rod is hinged to the second slider, and the other end of the second guide rod is hinged to the second guide block. The second guide rod is inclined from top to bottom along the direction from the main blade to the bulldozer body. The lever is fixedly connected to the upper end of the arc-shaped rack on the side away from the auxiliary blade. When the auxiliary blade and the main blade are spliced ​​together, the lever is located on the side of the flap away from the limit plate.

[0019] By adopting the above technical solution, in the initial state, the limiting plate limits the flap, so that the flap can only rotate in the direction of the third spring. The third spring pushes the flap, so that the flap fits against the limiting plate. When it is necessary to retract the secondary blade, the second motor and gear work together to move the arc rack, which in turn moves the secondary blade. The movement of the secondary blade drives the connecting rod to move. At this time, the buffer plate squeezes the second spring. During the squeezing process, since the lever is in contact with the flap, the lever and the flap work together to drive the first slider to move. The first slider and the first guide rod work together to move the second slider upward. The second slider and the second guide rod work together to move the second guide block in the direction of the main blade, which in turn separates the second guide block from the buffer plate, allowing the secondary blade to flip smoothly and improving the convenience of retracting the secondary blade.

[0020] Secondly, this application provides an automatic leveling construction method for bulldozers with GPS positioning, comprising the following steps: S1: The GPS base station adjusts the detection and identification parameters of the GPS signal receiver; S2: The GPS signal receiver identifies and detects the distance between the main blade and the ground; S3: The hydraulic cylinder works in conjunction with the first and second rotating rods to raise and lower the main blade; S4: When the distance between the main blade and the ground reaches the preset value, the adjusting component locks the relative positional relationship between the first rotating rod and the second rotating rod; S5: The bulldozer body moves the main blade to level the ground.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. The connector is used to connect the bulldozer body and the main blade and to support the main blade. When the ground needs to be leveled, the hydraulic cylinder drives the second rotating rod to rotate. The second rotating rod and the adjusting component work together to drive the first rotating rod to rotate, thereby raising and lowering the main blade. During the raising and lowering of the main blade, the detection component identifies and detects the distance between the main blade and the ground. When the distance between the main blade and the ground reaches the preset value, the adjusting component locks the first rotating rod and the second rotating rod to position the main blade. This helps to reduce the frequency of repeatedly adjusting the height of the main blade and improves the construction efficiency of the bulldozer. 2. The second rotating rod supports the first support block, and the first support block supports the end of the first rotating rod away from the main blade. When the first rotating rod rotates, it drives the second gear ring to rotate. When the distance between the main blade and the ground reaches a preset value, the first motor drives the lead screw to rotate, and the second support block moves closer to the first support block. The first gear ring meshes with the second gear ring, and the first and second gear rings work together to limit the rotation of the first rotating rod. At this time, the hydraulic cylinder continues to work, and the main blade makes a circular motion around the hinge point between the second rotating rod and the bulldozer body. Due to the limitation of the first rotating rod, the movement of the main blade is restricted at this time, and the main blade is in a fixed position, which improves the convenience of positioning the main blade. 3. In the initial state, the limiting plate restricts the flap, allowing it to rotate only towards the third spring. The third spring pushes the flap, causing it to engage with the limiting plate. When the secondary blade needs to be retracted, the second motor and gears work together to move the arc-shaped rack, which in turn moves the secondary blade. The movement of the secondary blade drives the connecting rod to move, at which point the buffer plate compresses the second spring. During this compression, the lever contacts the flap, and the lever and flap work together to move the first slider. The first slider and the first guide rod work together to move the second slider upwards. The second slider and the second guide rod work together to move the second guide block towards the main blade, thus separating the second guide block from the buffer plate. This allows the secondary blade to flip smoothly, improving the ease of retracting the secondary blade. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of an automatic leveling device for bulldozers with GPS positioning.

[0023] Figure 2 This is a schematic diagram of the adjusting component structure.

[0024] Figure 3 This is a schematic diagram showing the connection between the main blade and the auxiliary blade.

[0025] Figure 4 This is a schematic diagram showing the connection between the first guide block and the buffer plate.

[0026] Figure 5 This is a schematic diagram of the moving part structure.

[0027] Explanation of reference numerals in the attached drawings: 1. Bulldozer body; 11. Hydraulic cylinder; 12. Second rotating rod; 2. Main blade; 21. First rotating rod; 3. Connecting component; 31. First rotating rod; 32. Second rotating rod; 4. Adjusting component; 41. First support block; 42. Second support block; 43. First motor; 44. Lead screw; 45. First gear ring; 46. Second gear ring; 5. Detection component; 51. Fixed cylinder; 52. GPS signal receiver; 6. Secondary blade; 61. Arc-shaped rack; 62. Second motor; 63. Gear; 71. Connecting rod; 72. First guide block; 73. Buffer plate; 74. First spring; 75. Second guide block; 76. Second spring; 8. Moving component; 81. First slider; 82. Second slider; 83. Flip plate; 84. Third spring; 85. First guide rod; 86. Second guide rod; 87. Limiting plate; 88. Lever. Detailed Implementation

[0028] The present application will be further described in detail below with reference to all the accompanying drawings.

[0029] This application discloses an automatic leveling device for bulldozers with GPS positioning. Example

[0030] Reference Figure 1 An automatic leveling device for a bulldozer with GPS positioning includes a bulldozer body 1, a main blade 2, and two connecting parts 3. The length of the main blade 2 is greater than the width of the bulldozer body 1. The two connecting parts 3 are located between the bulldozer body 1 and the main blade 2, and are situated on both sides of the bulldozer body 1 along its width direction. The connecting parts 3 are used to support the main blade 2. A controller is installed inside the bulldozer body 1. The controller collects and processes signals and controls all drive devices to work collaboratively. Since the controller is existing technology, it will not be described in detail in this document and in the accompanying drawings.

[0031] Reference Figure 1 The connecting component 3 includes a first rotating rod 31 and a second rotating rod 32, which correspond one-to-one. One end of the first rotating rod 31 is hinged to the bulldozer body 1, and the other end is hinged to the side of the main blade 2 near the bulldozer body 1. The first rotating rod 31 connects the bulldozer body 1 and the main blade 2. When the main blade 2 is at its lowest position, the first rotating rod 31 is in a horizontal position. The second rotating rod 32 is located at the upper end of the first rotating rod 31. The lower end of the second rotating rod 32 is hinged to the first rotating rod 31, and the upper end of the second rotating rod 32 is hinged to the side of the main blade 2 near the bulldozer body 1. The first rotating rod 31 and the second rotating rod 32 work together to limit the movement of the main blade 2, which helps to reduce the probability of the main blade 2 rotating.

[0032] Reference Figure 1 The bulldozer body 1 has two hydraulic cylinders 11 located on both sides of the bulldozer body 1 along its width. Two first rotating rods 21 are hinged to the side of the main blade 2 closest to the bulldozer body 1, and two second rotating rods 12 are hinged to the side of the bulldozer body 1 closest to the main blade 2. The hydraulic cylinders 11, first rotating rods 21, and second rotating rods 12 are all in one-to-one correspondence. The hinge point of the second rotating rod 12 with the bulldozer body 1 is higher than the hinge point of the first rotating rod 21 with the main blade 2. An adjusting element 4 is provided between the rotating rod 21 and the second rotating rod 12. The second rotating rod 12 and the first rotating rod 21 are both inclined from bottom to top along the direction from the bulldozer body 1 towards the main blade 2. One end of the hydraulic cylinder 11 is hinged to the bulldozer body 1, and the output end of the hydraulic cylinder 11 is hinged to the second rotating rod 12. When the ground needs to be leveled, the hydraulic cylinder 11 drives the second rotating rod 12 to rotate. The second rotating rod 12 and the adjusting element 4 cooperate to drive the first rotating rod 21 to rotate, thereby raising and lowering the main blade 2. A detection element 5 is provided on the side of the main blade 2 near the bulldozer body 1. During the raising and lowering of the main blade 2, the detection element 5 identifies and detects the distance between the main blade 2 and the ground. When the distance between the main blade 2 and the ground reaches a preset value, the adjusting element 4 locks the first rotating rod 21 and the second rotating rod 12 to position the main blade 2. This helps to reduce the frequency of repeatedly adjusting the height of the main blade 2 and improves the construction efficiency of the bulldozer.

[0033] Reference Figure 1 The detection component 5 includes two fixed cylinders 51 and two GPS signal receivers 52. The fixed cylinders 51 and the GPS signal receivers 52 correspond one-to-one. Both fixed cylinders 51 are vertically fixed to the side of the main blade 2 near the bulldozer body 1 and are located between the two first rotating rods 31. The GPS signal receivers 52 are vertically arranged and their lower ends are detachably connected to the inside of the fixed cylinders 51. The fixed cylinders 51 fix the GPS signal receivers 52. The GPS signal receivers 52 identify and detect the distance between the main blade 2 and the ground and feed the information back to the terminal.

[0034] Reference Figure 1 and Figure 2The adjusting component 4 includes a first support block 41, a second support block 42, a first motor 43, a lead screw 44, a first gear ring 45, and a second gear ring 46. The first support block 41 is fixedly connected to the side of the second rotating rod 12 away from the bulldozer body 1, and the second support block 42 is slidably connected to the side of the second rotating rod 12 away from the bulldozer body 1. The second support block 42 can move towards or away from the first support block 41. The end of the first rotating rod 21 away from the main blade 2 is located between the first support block 41 and the second support block 42, and is rotatably connected to the first support block 41. The first support block 41 supports the first rotating rod 21.

[0035] Reference Figure 2 The first toothed ring 45 is fixedly connected to the side of the second support block 42 near the first support block 41, and the second toothed ring 46 is fixedly connected to the side of the first rotating rod 21 near the second support block 42. The first toothed ring 45 and the second toothed ring 46 are facing each other. When the first rotating rod 21 rotates, it drives the second toothed ring 46 to rotate. The first motor 43 is fixedly connected to the first support block 41 on the side away from the second support block 42. The lead screw 44 is coaxially fixedly connected to the output shaft of the first motor 43. The lead screw 44 is rotatably connected to the first support block 41 and the first rotating rod 21. The lead screw 44 is threadedly connected to the second support block 42. When the distance between the main blade 2 and the ground reaches the preset value, the first motor 43 drives the lead screw 44 to rotate. The second support block 42 moves closer to the first support block 41. The first gear ring 45 and the second gear ring 46 mesh. The first gear ring 45 and the second gear ring 46 cooperate to limit the rotation of the first rotating rod 21. At this time, the hydraulic cylinder 11 continues to work. The main blade 2 makes a circular motion around the hinge point between the second rotating rod 12 and the bulldozer body 1. The main blade 2 moves away from the bulldozer body 1. Due to the restriction of the first rotating rod 31, the main blade 2 can only move closer to the bulldozer body 1. At this time, the movement of the main blade 2 is restricted. The main blade 2 is in a fixed position, which improves the convenience of positioning the main blade 2.

[0036] Reference Figure 1 and Figure 3The main blade 2 has auxiliary blades 6 hinged to both sides along its length at the upper end. The auxiliary blades 6 can be flipped to one side of the main blade 2 along its length. Two arc-shaped racks 61 are slidably connected to the side of the main blade 2 closest to the bulldozer body 1. The two arc-shaped racks 61 are located on both sides of the main blade 2 along its length, and the upper ends of the arc-shaped racks 61 are fixedly connected to the two auxiliary blades 6 on opposite sides. Two second motors 62 are fixedly installed on the side of the main blade 2 closest to the bulldozer body 1. Gears 63 are coaxially fixed to the output shafts of the second motors 62. The gears 63 mesh with the arc-shaped racks 61. When it is necessary to bulldoze a wider area of ​​the ground at once, the second motors 62 and gears 63 work together to drive the arc-shaped racks 61 to move. The movement of the arc-shaped racks 61 causes the auxiliary blades 6 to flip and attach to both sides of the main blade 2 along its length, improving the convenience of adjusting the working range of the bulldozer.

[0037] Reference Figure 1 and Figure 4 Each of the two auxiliary blades 6 has a connecting rod 71 fixedly mounted on the side of its upper end near the bulldozer body 1. The connecting rod 71 is arranged along the length of the main blade 2. A first guide block 72 is fixedly mounted on the side of the connecting rod 71 away from the bulldozer body 1. The first guide block 72 is located at the end of the connecting rod 71 away from the auxiliary blade 6. A buffer plate 73 is provided on the side of the connecting rod 71 away from the bulldozer body 1. The buffer plate 73 is slidably connected to the connecting rod 71 along the length of the connecting rod 71. The buffer plate 73 is located on the side of the first guide block 72 near the auxiliary blade 6. The connecting rod 71 supports the first guide block 72 and guides the movement of the buffer plate 73. A first spring 74 is provided between the first guide block 72 and the buffer plate 73. The two ends of the first spring 74 are fixedly connected to the first guide block 72 and the buffer plate 73, respectively. In its natural state, the first spring 74 pushes the buffer plate 73 to move away from the first guide block 72.

[0038] Reference Figure 5Two second guide blocks 75 are provided on the side of the main blade 2 near the bulldozer body 1. The second guide blocks 75 are slidably connected to the main blade 2 along the thickness direction of the main blade 2. A second spring 76 is provided between the second guide blocks 75 and the main blade 2. In the natural state, the second spring 76 pushes the second guide blocks 75 to move away from the main blade 2. When the two auxiliary blades 6 are located on both sides of the main blade 2, the side of the buffer plate 73 away from the first guide block 72 is in contact with the second guide block 75. During the flipping process of the auxiliary blades 6, the first guide block 72 first... First, the first guide block 72 contacts the second guide block 75, which then moves towards the main blade 2 and compresses the second spring 76. When the secondary blade 6 is assembled, the second spring 76 drives the second guide block 75 to reset. At this time, the buffer plate 73 is in contact with the second guide block 75, and the first spring 74 makes the buffer plate 73 and the second guide block 75 fit together. The gear 63 and the arc rack 61 work together to position the secondary blade 6. At the same time, the buffer plate 73 and the second guide block 75 abut against each other, which also positions the secondary blade 6.

[0039] Reference Figure 5 Two movable parts 8 are provided on the side of the main blade 2 near the second guide block 75. The movable parts 8 correspond one-to-one with the second guide block 75. When the auxiliary blade 6 needs to be retracted, the movable parts 8 drive the second guide block 75 to move in the direction of the main blade 2, which helps to reduce the probability of the second guide block 75 blocking the movement of the first guide block 72.

[0040] Reference Figure 5 The movable component 8 includes a first slider 81, a second slider 82, a flap 83, a third spring 84, a first guide rod 85, a second guide rod 86, a limiting plate 87, and a lever 88. The first slider 81 is located directly above the second guide block 75 and is slidably connected to the main shovel 2 along the length of the main shovel 2. The flap 83 is rotatably connected to the side of the first slider 81 away from the main shovel 2 and is set perpendicular to the first slider 81. The limiting plate 87 is fixedly connected to the side of the first slider 81 away from the main shovel 2 and is in contact with the side of the flap 83 away from the first rotating rod 21. The third spring 84 is located between the first slider 81 and the flap 83. The two ends of the third spring 84 are fixedly connected to the flap 83 and the first slider 81, respectively. In the initial state, the limiting plate 87 limits the flap 83 so that the flap 83 can only rotate in the direction of the third spring 84. The third spring 84 pushes the flap 83 so that the flap 83 is in contact with the limiting plate 87. The lever 88 is fixedly connected to the upper end of the arc-shaped rack 61 on the side away from the secondary blade 6. During the splicing process of the secondary blade 6 and the main blade 2, the arc-shaped rack 61 drives the lever 88 to rotate. The lever 88 contacts the flap 83 and drives the flap 83 to rotate. The flap 83 compresses the third spring 84. When the splicing of the secondary blade 6 and the main blade 2 is completed, the third spring 84 drives the flap 83 to reset. The lever 88 is located on the side of the flap 83 away from the limit plate 87.

[0041] Reference Figure 5 The second slider 82 is slidably connected to the main blade 2 vertically. The first guide rod 85 is located between the first slider 81 and the second slider 82. One end of the first guide rod 85 is hinged to the first slider 81, and the other end of the first guide rod 85 is hinged to the second slider 82. When the first slider 81 moves, it cooperates with the first guide rod 85 to drive the second slider 82 to move upward. The second guide rod 86 is located between the second slider 82 and the second guide block 75. One end of the second guide rod 86 is hinged to the second slider 82, and the other end is hinged to the second guide block 75. The second guide rod 86 is inclined from top to bottom along the direction from the main blade 2 towards the bulldozer body 1. When the auxiliary blade 6 needs to be retracted, the second motor 62 and the gear 63 cooperate to move the arc rack 61, which in turn moves the auxiliary blade 6. The movement of the auxiliary blade 6 drives the connecting rod 71 to move. At this time, the buffer plate 73 compresses the second spring 76. During the compression process, the lever 88 abuts against the flip plate 83. The lever 88 and the flip plate 83 cooperate to drive the first slider 81 to move. The first slider 81 and the first guide rod 85 cooperate to move the second slider 82 upward. The second slider 82 and the second guide rod 86 cooperate to move the second guide block 75 towards the main blade 2, which in turn separates the second guide block 75 from the buffer plate 73, allowing the auxiliary blade 6 to flip smoothly and improving the ease of retracting the auxiliary blade 6.

[0042] The implementation principle of the automatic leveling device for bulldozers with GPS positioning in this embodiment is as follows: When the ground needs to be leveled, the GPS signal receiver 52 identifies and detects the distance between the main blade 2 and the ground and feeds the information back to the terminal. When the distance between the main blade 2 and the ground reaches a preset value, the first motor 43 drives the lead screw 44 to rotate, the second support block 42 moves closer to the first support block 41, the first toothed ring 45 and the second toothed ring 46 mesh, and the first toothed ring 45 and the second toothed ring 46 cooperate to limit the rotation of the first rotating rod 21. At this time, the hydraulic cylinder 11 continues to work, and the main blade 2 makes a circular motion around the hinge point between the second rotating rod 12 and the bulldozer body 1. The main blade 2 moves away from the bulldozer body 1. Due to the restriction of the first rotating rod 31, the main blade 2 can only move closer to the bulldozer body 1. At this time, the movement of the main blade 2 is restricted, and the main blade 2 is in a fixed position, which helps to reduce the frequency of repeatedly adjusting the height of the main blade 2 and improves the construction efficiency of the bulldozer.

[0043] This application also discloses an automatic leveling construction method for bulldozers with GPS positioning, comprising the following steps: S1: The GPS base station adjusts the detection and identification parameters of the GPS signal receiver 52; S2: GPS signal receiver 52 identifies and detects the distance between the main blade 2 and the ground; S3: The hydraulic cylinder 11, in conjunction with the first rotating rod 21 and the second rotating rod 12, causes the main blade 2 to rise and fall. S4: When the distance between the main blade 2 and the ground reaches the preset value, the adjusting component 4 locks the relative positional relationship between the first rotating rod 21 and the second rotating rod 12; S5: The bulldozer body 1 drives the main blade 2 to move and level the ground.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A bulldozer automatic leveling device with GPS positioning, comprising a bulldozer body (1), a main blade (2), and two connecting parts (3), wherein the length of the main blade (2) is greater than the width of the bulldozer body (1), and the two connecting parts (3) are located between the bulldozer body (1) and the main blade (2), and are located on both sides of the bulldozer body (1) along the width direction, and the connecting parts (3) are used to support the main blade (2), characterized in that: The upper end of the bulldozer body (1) is provided with two hydraulic cylinders (11), which are located on both sides of the bulldozer body (1) along the width direction. Two first rotating rods (21) are hinged to the side of the main blade (2) near the bulldozer body (1), and two second rotating rods (12) are hinged to the side of the bulldozer body (1) near the main blade (2). The hydraulic cylinders (11), the first rotating rods (21), and the second rotating rods (12) are all in one-to-one correspondence. An adjusting member (4) is provided between the first rotating rods (21) and the second rotating rods (12) for adjustment. The component (4) is used to limit the relative positional relationship between the first rotating rod (21) and the second rotating rod (12). The second rotating rod (12) and the first rotating rod (21) are both inclined from bottom to top along the direction of the bulldozer body (1) pointing towards the main blade (2). One end of the hydraulic cylinder (11) is hinged to the bulldozer body (1), and the output end of the hydraulic cylinder (11) is hinged to the second rotating rod (12). The main blade (2) is provided with a detection component (5) on the side near the bulldozer body (1). The detection component (5) is used to detect the distance between the main blade (2) and the ground.

2. The automatic leveling device for bulldozers with GPS positioning according to claim 1, characterized in that: The connecting member (3) includes a first rotating rod (31) and a second rotating rod (32). The first rotating rod (31) and the second rotating rod (32) correspond one to one. One end of the first rotating rod (31) is hinged to the bulldozer body (1), and the other end of the first rotating rod (31) is hinged to the side of the main blade (2) near the bulldozer body (1). The second rotating rod (32) is located at the upper end of the first rotating rod (31), and the lower end of the second rotating rod (32) is hinged to the first rotating rod (31). The upper end of the second rotating rod (32) is hinged to the side of the main blade (2) near the bulldozer body (1).

3. The automatic leveling device for bulldozers with GPS positioning according to claim 2, characterized in that: The detection component (5) includes two fixed cylinders (51) and two GPS signal receivers (52). The fixed cylinders (51) and GPS signal receivers (52) correspond one-to-one. The two fixed cylinders (51) are both vertically fixedly connected to the side of the main blade (2) near the bulldozer body (1) and are both located between the two first rotating rods (31). The GPS signal receivers (52) are vertically arranged, and the lower end of the GPS signal receivers (52) is detachably connected to the inside of the fixed cylinders (51).

4. The automatic leveling device for bulldozers with GPS positioning according to claim 1, characterized in that: The adjusting component (4) includes a first support block (41), a second support block (42), a first motor (43), a lead screw (44), a first gear ring (45), and a second gear ring (46). The first support block (41) is fixedly connected to the side of the second rotating rod (12) away from the bulldozer body (1). The second support block (42) is slidably connected to the side of the second rotating rod (12) away from the bulldozer body (1). The second support block (42) can move towards or away from the first support block (41). The end of the first rotating rod (21) away from the main blade (2) is located between the first support block (41) and the second support block (42) and is rotatably connected to the first support block (41). The first motor... (43) is fixedly connected to the side of the first support block (41) away from the second support block (42). The lead screw (44) is coaxially fixedly connected to the output shaft of the first motor (43). The lead screw (44) is rotatably connected to the first support block (41) and the first rotating rod (21). The lead screw (44) is threadedly connected to the second support block (42). The first toothed ring (45) is fixedly connected to the side of the second support block (42) close to the first support block (41). The second toothed ring (46) is fixedly connected to the side of the first rotating rod (21) close to the second support block (42). The first toothed ring (45) and the second toothed ring (46) face each other. The lead screw (44) is located at the center of the first toothed ring (45) and the second toothed ring (46).

5. The automatic leveling device for bulldozers with GPS positioning according to claim 1, characterized in that: The main blade (2) has auxiliary blades (6) hinged to both sides along the length direction at the upper end. The auxiliary blades (6) can be flipped to one side along the length direction of the main blade (2). Two arc-shaped racks (61) are slidably connected to the side of the main blade (2) near the bulldozer body (1). The two arc-shaped racks (61) are located on both sides along the length direction of the main blade (2). The upper end of the arc-shaped racks (61) is fixedly connected to the side of the two auxiliary blades (6) that are far apart from each other. Two second motors (62) are fixedly installed on the side of the main blade (2) near the bulldozer body (1). The output shaft of the second motors (62) is coaxially fixed with gears (63), and the gears (63) mesh with the arc-shaped racks (61).

6. The automatic leveling device for bulldozers with GPS positioning according to claim 5, characterized in that: Both of the two auxiliary blades (6) have a connecting rod (71) fixedly connected to the upper end of each blade near the bulldozer body (1). The connecting rod (71) is set along the length of the main blade (2). A first guide block (72) is fixedly provided on the side of the connecting rod (71) away from the bulldozer body (1). The first guide block (72) is located at the end of the connecting rod (71) away from the auxiliary blade (6). A buffer plate (73) is provided on the side of the connecting rod (71) away from the bulldozer body (1). The buffer plate (73) is slidably connected to the connecting rod (71) along the length of the connecting rod (71). The buffer plate (73) is located on the side of the first guide block (72) near the auxiliary blade (6). A first spring (74) is provided between the first guide block (72) and the buffer plate (73). The two ends of the first spring (74) are respectively connected to the first guide block (72) and the buffer plate (73). The main blade (2) is fixedly connected to the bulldozer body (1) with two second guide blocks (75). The second guide blocks (75) are slidably connected to the main blade (2) along the thickness direction of the main blade (2). A second spring (76) is provided between the second guide block (75) and the main blade (2). In the natural state, the second spring (76) pushes the second guide block (75) to move away from the main blade (2). When the two auxiliary blades (6) are located on both sides of the main blade (2), the buffer plate (73) is in contact with the second guide block (75) on the side away from the first guide block (72). The main blade (2) is provided with two moving parts (8) on the side near the second guide block (75). The moving parts (8) correspond one-to-one with the second guide block (75). The moving parts (8) are used to separate the second guide block (75) from the buffer plate (73).

7. The automatic leveling device for bulldozers with GPS positioning according to claim 6, characterized in that: The movable component (8) includes a first slider (81), a second slider (82), a flap (83), a third spring (84), a first guide rod (85), a second guide rod (86), a limiting plate (87), and a lever (88). The first slider (81) is located directly above the second guide block (75) and is slidably connected to the main shovel (2) along the length of the main shovel (2). The flap (83) is rotatably connected to the side of the first slider (81) away from the main shovel (2). The first slider (81) is perpendicular to the first slider (81). The limiting plate (87) is fixedly connected to the first slider (81) on the side away from the main blade (2) and is in contact with the side of the flip plate (83) away from the first rotating rod (21). The third spring (84) is located between the first slider (81) and the flip plate (83). In its natural state, the third spring (84) pushes the flip plate (83) closer to the limiting plate (87). The second slider (82) is located between the second guide block (75) and the first slider (81). The second slider (82) is slidably connected to the main blade (2) in the vertical direction. The first guide rod (85) is located between the first slider (81) and the second slider (82). One end of the first guide rod (85) is hinged to the first slider (81), and the other end of the first guide rod (85) is hinged to the second slider (82). The second guide rod (86) is located between the second slider (82) and the second guide block (75). One end of the second guide rod (86) is hinged to the second slider (82). The second guide rod (86) is hinged to the second slider (82), and the other end of the second guide rod (86) is hinged to the second guide block (75). The second guide rod (86) is inclined from top to bottom along the direction from the main blade (2) to the bulldozer body (1). The lever (88) is fixedly connected to the upper end of the arc rack (61) on the side away from the auxiliary blade (6). When the auxiliary blade (6) and the main blade (2) are spliced ​​together, the lever (88) is located on the side of the flap (83) away from the limit plate (87).

8. A method for automatic leveling construction with a bulldozer equipped with GPS positioning, applied to an automatic leveling device for a bulldozer equipped with GPS positioning as described in any one of claims 1-7, characterized in that, Includes the following steps: S1: The GPS base station adjusts the detection and identification parameters of the GPS signal receiver (52); S2: The GPS signal receiver (52) identifies and detects the distance between the main blade (2) and the ground; S3: The hydraulic cylinder (11) cooperates with the first rotating rod (21) and the second rotating rod (12) to raise and lower the main blade (2); S4: When the distance between the main blade (2) and the ground reaches the preset value, the adjusting component (4) locks the relative position relationship between the first rotating rod (21) and the second rotating rod (12); S5: The bulldozer body (1) drives the main blade (2) to move and level the ground.

Images