A loader-mounted synchronous bulldozing device and control system

Abstract

This invention discloses a synchronous bulldozing device and control system for a loader with two booms, including a main hook assembly. A left push plate and a right push plate are hinged to both sides of the front of the main hook assembly. This invention relates to the field of engineering machinery technology. This synchronous bulldozing device and control system for a loader, through the cooperation of the main hook assembly, the left push plate, the right push plate, the left cylinder, and the right cylinder, can not only push materials but also clamp them and collect them for filling pits. Furthermore, because the angles of the left and right push plates relative to the main hook assembly are adjustable, it can better adapt to different operating conditions, thus having a wide range of applications. With the cooperation of the first, second, and third pipes, a two-way overflow valve, and a multi-way valve, the synchronous extension and retraction of the left and right cylinders are achieved, providing synchronous assurance for the angle adjustment of the left and right push plates.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, specifically to a bulldozing device and control system for a loader with synchronized double booms. Background Technology

[0002] A loader is a self-propelled earthmoving machine capable of shoveling, loading, transporting, and unloading. It mainly consists of three parts: an engine, a chassis including a running gear, and a working device. Loaders offer advantages such as high operating speed, high efficiency, good maneuverability, and easy operation. They are widely used in construction projects such as highways, railways, buildings, hydropower, ports, and mines. With different auxiliary working devices, they can also be used for bulldozing, lifting, and loading and unloading other materials such as timber.

[0003] For bulldozer blades on loaders, conventional bulldozer blades are often just shallow bucket-type structures, which can only be used to push materials. Their function is relatively simple, and during the material pushing process, materials are prone to overflowing from both sides of the bulldozer blade, resulting in wasted effort. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a dual-arm synchronous bulldozing device and control system for loaders, which solves the problem that conventional bulldozer blades have relatively simple functions and are prone to material overflowing from both sides of the blade during the material pushing process, resulting in wasted effort.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution: a double-arm synchronous bulldozing device for a loader, comprising a main hook assembly, wherein a left push plate and a right push plate are respectively hinged to both sides of the front of the main hook assembly, and the left push plate and the right push plate are symmetrically arranged; a left hydraulic cylinder and a right hydraulic cylinder are also rotatably mounted on both sides of the main hook assembly, wherein the telescopic end of the left hydraulic cylinder is hinged to the back of the left push plate, and the telescopic end of the right hydraulic cylinder is hinged to the back of the right push plate;

[0006] A bidirectional overflow valve is fixedly connected to the back of the main hook assembly. The rod chamber of the left cylinder and the rodless chamber of the right cylinder are connected through a first pipe. The rodless chamber of the left cylinder is connected to a multi-way valve through a second pipe. The rod chamber of the right cylinder is connected to the multi-way valve through a third pipe. The bidirectional overflow valve is connected and positioned between the first and second pipes.

[0007] The present invention is further configured such that: the main hook assembly includes a back plate, and hooks are fixedly connected to both sides of the back of the back plate;

[0008] Furthermore, both sides of the top of the back panel are fixedly connected with lifting lugs.

[0009] The present invention is further configured such that: a first limiting baffle is fixedly connected to both sides of the bottom front of the back plate, and a second limiting baffle is fixedly connected to the back of the left push plate and the right push plate, and the first limiting baffle and the second limiting baffle are used in conjunction.

[0010] Both the left and right hydraulic cylinders are rotatably mounted on the back plate, and both the left and right hydraulic cylinders are positioned above the first limiting baffle.

[0011] The present invention is further configured such that: the left push plate and the right push plate are both rotatably mounted on the front of the back plate via pins, and a sealing plate is provided at the pin lug.

[0012] The present invention is further configured such that: a first wear-resistant plate is fixedly connected to the bottom of both the left push plate and the right push plate, and a second wear-resistant plate is fixedly connected to the bottom of the back plate.

[0013] The present invention is further configured such that: the front ends of the left push plate and the right push plate are both fixedly connected to a bent plate, and the back ends of the left push plate and the right push plate are both fixedly connected to a reinforcing rib;

[0014] Furthermore, the reinforcing ribs are positioned above the left and right oil cylinders.

[0015] The present invention is further configured such that the pressure value of the bidirectional overflow valve is 160 bar.

[0016] The present invention also discloses a control system for a loader with a dual-arm synchronous bulldozing device, including a microcontroller, wherein the microcontroller is connected to an initial adjustment module, the microcontroller is connected to an operation unit, and the operation unit is connected to a main hydraulic cylinder;

[0017] The operating unit includes a shrinking module and an expanding module. The shrinking module is used to apply negative pressure to the main cylinder, so that the hydraulic oil in the rodless chamber of the left cylinder flows back to the main cylinder through a multi-way valve. The expanding module is used to apply positive pressure to the main cylinder, so that the hydraulic oil in the main cylinder flows to the rodless chamber of the left cylinder through a multi-way valve.

[0018] The microcontroller is used to monitor the opening and closing status of the external loader, and sends an adjustment command to the initial adjustment module when the external loader starts.

[0019] The initial adjustment module is used to receive adjustment instructions and, after receiving the adjustment instructions, send automatic adjustment instructions to the microcontroller. After receiving the automatic adjustment instructions, the microcontroller starts the expansion module to keep the main oil cylinder at a pressure of 160 bar for 10-15 seconds. Beneficial effects

[0020] This invention provides a synchronous double-arm bulldozing device and control system for loaders. It has the following advantages:

[0021] (1) The present invention, through the cooperation of the main hook assembly, the left push plate, the right push plate, the left oil cylinder and the right oil cylinder, can not only push the material, but also clamp the material and gather the material to fill the pit. Furthermore, since the angle of the left push plate and the right push plate relative to the main hook assembly is adjustable, it can better adapt to different working conditions and has a wide range of applications. At the same time, with the cooperation of the first pipe, the second pipe, the third pipe, the bidirectional overflow valve and the multi-way valve, the left oil cylinder and the right oil cylinder can be synchronously extended and retracted, providing synchronous guarantee for the angle adjustment of the left push plate and the right push plate.

[0022] (2) The present invention achieves automatic adjustment of the pressure value applied to the main cylinder by setting the initial adjustment module, ensuring that the left cylinder can still hold pressure after it reaches its maximum stroke. With the setting of the two-way overflow valve, the left and right cylinders can be vented, ensuring stability when the left and right push plates are adjusted. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0024] Figure 2 Top view of the invention;

[0025] Figure 3 This is the left view of the present invention;

[0026] Figure 4 This is a schematic diagram showing the connection of the left oil cylinder, right oil cylinder, bidirectional overflow valve, first pipe, second pipe, multi-way valve and third pipe structure of the present invention;

[0027] Figure 5 This is a system principle block diagram of the present invention;

[0028] In the diagram, 1. Main hook assembly; 2. Left push plate; 3. Right push plate; 4. Left hydraulic cylinder; 5. Right hydraulic cylinder; 6. Two-way overflow valve; 7. First pipe; 8. Second pipe; 9. Multi-way valve; 10. Third pipe; 11. Back plate; 12. Hook; 13. Lifting lug; 14. First limit baffle; 15. Second limit baffle; 16. Pin shaft; 17. Sealing plate; 18. First wear-resistant plate; 19. Second wear-resistant plate; 20. Bending plate; 21. Reinforcing rib; 22. Microcontroller; 23. Initial adjustment module; 24. Operating unit; 25. Main hydraulic cylinder; 26. Retraction module; 27. Expansion module. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0030] Please see Figure 1-5 The present invention provides the following technical solutions:

[0031] Example 1

[0032] A loader with a dual-arm synchronous bulldozing device includes a main hook assembly 1. Specifically, the main hook assembly 1 includes a back plate 11, hooks 12 are fixedly connected to both sides of the back of the back plate 11, and lifting lugs 13 are fixedly connected to both sides of the top of the back plate 11.

[0033] As a preferred embodiment, a left push plate 2 and a right push plate 3 are hinged to the two sides of the front of the back plate 11, and the left push plate 2 and the right push plate 3 are symmetrically arranged. The left push plate 2 and the right push plate 3 are rotatably mounted on the front of the back plate 11 through a pin 16, and a sealing plate 17 is provided at the ear seat of the pin 16.

[0034] As a preferred embodiment, in order to achieve stable control of the left push plate 2 and the right push plate 3, a left hydraulic cylinder 4 and a right hydraulic cylinder 5 are respectively rotatably installed on both sides of the back plate 11. The telescopic end of the left hydraulic cylinder 4 is hinged to the back of the left push plate 2, and the telescopic end of the right hydraulic cylinder 5 is hinged to the back of the right push plate 3.

[0035] As a preferred embodiment, in order to achieve synchronous driving of the left push plate 2 and the right push plate 3, the rod chamber of the left cylinder 4 and the rodless chamber of the right cylinder 5 are connected through the first pipe 7, the rodless chamber of the left cylinder 4 is connected to the multi-way valve 9 through the second pipe 8, and the rod chamber of the right cylinder 5 is connected to the multi-way valve 9 through the third pipe 10.

[0036] As a preferred embodiment, in order to achieve the limiting protection of the left push plate 2 and the right push plate 3, the two sides of the bottom front of the back plate 11 are fixedly connected to the first limiting baffle 14, the left oil cylinder 4 and the right oil cylinder 5 are both set above the first limiting baffle 14, and the back of the left push plate 2 and the right push plate 3 are fixedly connected to the second limiting baffle 15, and the first limiting baffle 14 and the second limiting baffle 15 are used in conjunction.

[0037] To further explain, in order to facilitate the gathering of materials, the front ends of both the left push plate 2 and the right push plate 3 are fixedly connected with bent plates 20.

[0038] As a preferred embodiment, in order to ensure the long-term effective use of the device, the bottom of the left push plate 2 and the right push plate 3 are both fixedly connected to the first wear-resistant plate 18, the bottom of the back plate 11 is fixedly connected to the second wear-resistant plate 19, the back of the left push plate 2 and the right push plate 3 are both fixedly connected to the reinforcing rib 21, and the reinforcing rib 21 is located above the left oil cylinder 4 and the right oil cylinder 5.

[0039] In this embodiment, not only can the material be stably pushed, but it can also be gathered to fill the pit. With multiple functions, the left oil cylinder 4 and the right oil cylinder 5 extend and retract synchronously, making the device run more smoothly.

[0040] Example 2

[0041] This embodiment is an improvement on the previous embodiment. A bulldozing device for a loader with a double boom synchronous mechanism further includes a bidirectional overflow valve 6 fixed to the back of the back plate 11. The bidirectional overflow valve 6 is connected and disposed between the first pipe 7 and the second pipe 8. The pressure value of the bidirectional overflow valve 6 is 160 bar.

[0042] The advantage of Example 2 over Example 1 is that, by setting up the bidirectional overflow valve 6, a reliable exhaust channel can be provided when the left oil cylinder 4 and the right oil cylinder 5 are not used for a long time and gas appears in the internal cavity, and it also plays the role of replenishing oil and draining oil.

[0043] Example 3

[0044] Based on Embodiment 2, a control system for a loader with a loader and ...

[0045] The operating unit 24 includes a shrinking module 26 and an expanding module 27. The shrinking module 26 is used to apply negative pressure to the main cylinder 25, so that the hydraulic oil in the rodless chamber of the left cylinder 4 flows back to the main cylinder 25 through the multi-way valve 9. The expanding module 27 is used to apply positive pressure to the main cylinder 25, so that the hydraulic oil in the main cylinder 25 flows to the rodless chamber of the left cylinder 4 through the multi-way valve 9.

[0046] The microcontroller 22 is used to monitor the opening and closing status of the external loader, and sends an adjustment command to the initial adjustment module 23 when the external loader starts.

[0047] The initial adjustment module 23 is used to receive adjustment commands and, after receiving the adjustment commands, sends an automatic adjustment command to the microcontroller 22. After receiving the automatic adjustment command, the microcontroller 22 starts the expansion module 27 to keep the main oil cylinder 25 at a pressure of 160 bar for 10-15 seconds.

[0048] In this embodiment, by monitoring the opening and closing status of the external loader, the initial adjustment module 23 is used to automatically adjust the positive pressure applied to the main cylinder 25, thereby realizing the automatic exhaust of the left cylinder 4 and the right cylinder 5.

[0049] In use, the device is connected to an external loader via hook 12. The main hydraulic cylinder 25 is placed on the external loader and connected to the multi-way valve 9 via a pipe. When the external loader is started, the microcontroller 22 sends an adjustment command to the initial adjustment module 23. The initial adjustment module 23 receives the adjustment command and, after receiving the adjustment command, sends an automatic adjustment command to the microcontroller 22. After receiving the automatic adjustment command, the microcontroller 22 starts the expansion module 27 to maintain the main hydraulic cylinder 25 at a pressure of 160 bar for 10-15 seconds. During this process, hydraulic oil enters the rodless chamber of the left hydraulic cylinder 4 through the multi-way valve 9 and the second pipe 8. The telescopic end of the left hydraulic cylinder 4 extends, pushing the left push plate 2 to rotate. At the same time, the hydraulic oil in the rod chamber of the left hydraulic cylinder 4 enters the rodless chamber of the right hydraulic cylinder 5 through the first pipe 7. The telescopic end of the right hydraulic cylinder 5 extends, pushing the right push plate 3 to rotate synchronously in opposite directions with the left push plate 2. After the left hydraulic cylinder 4 reaches its maximum stroke, the gas in the left hydraulic cylinder 4 and the right hydraulic cylinder 5 is discharged through the bidirectional overflow valve 6.

[0050] During use, the control shrink module 26 applies negative pressure to the main cylinder 25, causing the hydraulic oil in the rodless chamber of the left cylinder 4 to flow back to the main cylinder 25 through the second pipe 8 and the multi-way valve 9. During the process, the extension end of the left cylinder 4 and the extension end of the right cylinder 5 shrink synchronously, causing the left push plate 2 and the right push plate 3 to expand.

[0051] When it is necessary to retract the left push plate 2 and the right push plate 3, the control extension module 27 applies positive pressure to the main oil cylinder 25, so that the hydraulic oil in the main oil cylinder 25 passes through the multi-way valve 9 and the second pipeline 8 and enters the rodless chamber of the left oil cylinder 4. During the process, the extension end of the left oil cylinder 4 and the extension end of the right oil cylinder 5 extend synchronously, so that the left push plate 2 and the right push plate 3 retract.

Claims

1. A loader-mounted, synchronous bulldozing device, comprising a main hook assembly (1), characterized in that: The main hook assembly (1) has a left push plate (2) and a right push plate (3) hinged on both sides of the front, and the left push plate (2) and the right push plate (3) are symmetrically arranged. The main hook assembly (1) also has a left oil cylinder (4) and a right oil cylinder (5) rotatably installed on both sides. The telescopic end of the left oil cylinder (4) is hinged to the back of the left push plate (2), and the telescopic end of the right oil cylinder (5) is hinged to the back of the right push plate (3). The main hook assembly (1) includes a back plate (11), on both sides of the back of the back plate (11) are fixedly connected to hooks (12); and on both sides of the top of the back plate (11) are fixedly connected to lugs (13). The back plate (11) has a first limiting baffle (14) fixedly connected to both sides of the bottom front. The back of the left push plate (2) and the right push plate (3) are fixedly connected to a second limiting baffle (15), and the first limiting baffle (14) and the second limiting baffle (15) are used in conjunction. The left cylinder (4) and the right cylinder (5) are both rotatably mounted on the back plate (11), and the left cylinder (4) and the right cylinder (5) are both located above the first limiting baffle (14); the back of the main hook assembly (1) is fixedly connected to a two-way overflow valve (6), the rod chamber of the left cylinder (4) and the rodless chamber of the right cylinder (5) are connected through a first pipe (7), the rodless chamber of the left cylinder (4) is connected to a multi-way valve (9) through a second pipe (8), the rod chamber of the right cylinder (5) is connected to the multi-way valve (9) through a third pipe (10), and the two-way overflow valve (6) is connected and located between the first pipe (7) and the second pipe (8).

2. The loader-mounted synchronous bulldozing device according to claim 1, characterized in that: The left push plate (2) and the right push plate (3) are both rotatably mounted on the front of the back plate (11) via a pin (16), and a sealing plate (17) is provided at the ear seat of the pin (16).

3. A loader-mounted, synchronously operated bulldozing device according to claim 1, characterized in that: The bottom of the left push plate (2) and the right push plate (3) are both fixedly connected to the first wear-resistant plate (18), and the bottom of the back plate (11) is fixedly connected to the second wear-resistant plate (19).

4. A loader-mounted, synchronously operated bulldozing device according to claim 1, characterized in that: The front ends of the left push plate (2) and the right push plate (3) are both fixedly connected to a bent plate (20), and the back ends of the left push plate (2) and the right push plate (3) are both fixedly connected to a reinforcing rib (21); and the reinforcing rib (21) is located above the left oil cylinder (4) and the right oil cylinder (5).

5. A loader-mounted synchronous bulldozing device according to claim 1, characterized in that: The pressure value of the bidirectional overflow valve (6) is 160 bar.

6. A control system for a loader with a synchronized double-arm bulldozing device as described in claim 1, comprising a microcontroller (22), characterized in that: The microcontroller (22) is connected to the initial adjustment module (23), the microcontroller (22) is connected to the operation unit (24), and the operation unit (24) is connected to the main oil cylinder (25); The operating unit (24) includes a shrinking module (26) and an expanding module (27). The shrinking module (26) is used to apply negative pressure to the main cylinder (25) so that the hydraulic oil in the rodless chamber of the left cylinder (4) flows back to the main cylinder (25) through the multi-way valve (9). The expanding module (27) is used to apply positive pressure to the main cylinder (25) so that the hydraulic oil in the main cylinder (25) flows to the rodless chamber of the left cylinder (4) through the multi-way valve (9). The microcontroller (22) is used to monitor the opening and closing status of the external loader and to send an adjustment command to the initial adjustment module (23) when the external loader is started. The initial adjustment module (23) is used to receive adjustment instructions and, after receiving the adjustment instructions, sends an automatic adjustment instruction to the microcontroller (22). After receiving the automatic adjustment instruction, the microcontroller (22) starts the expansion module (27) to keep the main cylinder (25) at a pressure of 160 bar for 10-15 seconds.

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