Carry scraper
By installing a boom suspension device on the loader, and using sensors and shock absorbers to detect the lifting status of the boom, a shock absorption effect is achieved on the loader, solving the problem of loader bumping and improving driving stability and driving comfort.
Patent Information
- Application Number
- CN202520173300.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-26
AI Technical Summary
The lack of shock absorption devices on the loader chassis causes severe bumps when transporting goods across the road, affecting driving stability and driver comfort.
A boom suspension device, including a sensing plate, sensors, and shock absorbers, is installed on the loader. The sensors detect the lifting and lowering status of the boom, and control the three-position four-way valve and accumulator to realize the shock absorption function of the boom. The boom suspension device can perform shock absorption operation according to the lifting or lowering of the boom.
It effectively reduces the bumps of the loader on uneven roads, protects the frame and improves the comfort of the driver, shortens the start-up time of the suspension function, and improves shock absorption efficiency.
Smart Images
Figure CN223867319U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of mining equipment technology, and more specifically, it relates to a loader. Background Technology
[0002] A soil scraper is a type of earthmoving and transport machinery that uses a bucket to scoop up soil and load the broken soil into the bucket for transport. It can perform a comprehensive operation of shoveling, loading, transporting, unloading, layering, and compacting soil. It is suitable for site leveling work in railway, road, water conservancy, and power projects. Scrapers have advantages such as simple operation, no terrain limitations, independent operation, high speed, and high production efficiency.
[0003] However, because the loader chassis lacks shock absorption devices, the loader will experience severe bumps when transporting goods over the road surface, causing impact on the chassis and driver, and affecting the stability of the ride. Utility Model Content
[0004] To address the problem that loader chassis lack shock absorption devices, resulting in severe bumps when transporting goods over roads, impacting the chassis and driver, and affecting driving stability, the purpose of this utility model is to provide a loader. The loader includes: a boom, vertically mounted on the chassis; a lifting cylinder, driven by and connected to the boom, for raising or lowering the boom; and a boom suspension device, signal-connected to the boom and the lifting cylinder. When the loader's suspension function is activated, the boom suspension device can dampen the boom according to its raising or lowering.
[0005] Furthermore, the boom suspension device includes a sensing plate, a sensor, and a shock absorption device. The sensing plate is fixedly connected to the boom, and the sensor is fixedly connected to the vehicle frame. As the boom rises and falls, the state of the sensor changes depending on whether it detects the sensing plate. The sensor can send a corresponding control signal based on whether it detects the sensing plate to control the shock absorption device to perform shock absorption.
[0006] Furthermore, the boom suspension device also includes a three-position four-way valve; wherein, when the sensor detects the sensing plate, the V3 of the three-position four-way valve is energized; and when the sensor does not detect the sensing plate, the V2 of the three-position four-way valve is energized.
[0007] Furthermore, energizing either V3 or V2 of the three-position four-way valve can control the shock absorption device to perform shock absorption.
[0008] Furthermore, the shock absorption device is an accumulator, and the three-position four-way valve includes oil port P, oil port T, oil port A, and oil port B; oil port P is the oil inlet, oil port T is the oil return port, oil port B is connected to the lifting cylinder, and the accumulator is connected in parallel with the lifting cylinder and then connected to oil port A; wherein, a control valve is provided between oil port A and the accumulator.
[0009] Furthermore, the control valve is a ball valve.
[0010] Furthermore, when the control valve is energized, the levitation function of the boom suspension device is activated, and the accumulator adjusts the oil circuit of the boom suspension device to dampen the boom.
[0011] Furthermore, the boom includes a reset state and a lifting state; when the boom is in the reset state, the sensor can detect the sensing plate, and the sensor is in a conductive state.
[0012] Furthermore, when the boom is in the lifting state, the sensor cannot detect the sensing plate, and the sensor is in the disconnected state.
[0013] Furthermore, when the boom is in the reset state, the suspension function is activated, the V3 of the three-position four-way valve is energized, the lifting cylinder extends, and drives the boom and the sensing plate to lift upward until the sensor can no longer detect the sensing plate, the sensor is disconnected, the control valve is energized, and the suspension function of the boom suspension device is activated.
[0014] Furthermore, the boom includes a reset state and a lifting state; when the boom is in the lifting state, the suspension function is activated, the V2 of the three-position four-way valve is energized, the lifting cylinder retracts, driving the boom and the sensing plate to lower downwards until the sensor detects the sensing plate, the sensor is activated, the control valve is energized, and the suspension function of the boom suspension device is enabled.
[0015] The technical effects and advantages of this utility model are as follows:
[0016] 1. After the loader's suspension function is activated, when the boom suspension device detects up-and-down movement of the boom—that is, when it detects any upward or downward movement of the boom—it will activate the suspension function to dampen and cushion the impact on the loader's working mechanism. When the loader travels over uneven surfaces, the boom suspension device can prevent severe bumps that could cause impacts to the chassis and driver while transporting goods; it protects the chassis and improves driver comfort.
[0017] 2. The boom of the loader can activate the suspension function regardless of its position, without needing to reset the boom. This shortens the activation time of the suspension function, allowing for timely shock absorption of the boom, frame, and operator when the loader travels over uneven surfaces, thus improving the shock absorption efficiency of the boom suspension device. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the loader provided by this utility model when the boom is in the reset state;
[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0020] Figure 3 yes Figure 1 A schematic diagram of the boom of a medium-sized loader in the lifting position;
[0021] Figure 4 This is the hydraulic schematic diagram of the boom suspension device.
[0022] In the picture:
[0023] 10. Chassis; 20. Boom; 30. Lifting cylinder; 41. Sensor plate; 42. Sensor; 43. Shock absorber; 50. Three-position four-way valve; 60. Control valve. Detailed Implementation
[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.
[0025] See Figure 1 This is a structural diagram of the boom 20 of the loader provided by this utility model when it is in the reset state. Combined with... Figures 1 to 4 The loader includes, for example, a boom 20, a lifting cylinder 30, and a boom suspension device. The boom 20 is vertically mounted on the frame 10; the lifting cylinder 30 is driven by the boom 20 to raise or lower it; the boom suspension device is signal-connected to the boom 20 and the lifting cylinder 30; when the loader's suspension function is activated, the boom suspension device can dampen the boom 20 according to its raising or lowering.
[0026] In one specific embodiment, the lifting cylinder 30 extends, driving the boom 20 to lift upwards; the lifting cylinder 30 retracts, driving the boom 20 to lower downwards. After the loader activates the suspension function, when the boom suspension device detects up-and-down swaying of the boom 20, that is, when it detects that the boom 20 has an upward or downward movement, the boom suspension device will activate the suspension function to dampen and buffer the working mechanism of the loader.
[0027] When the loader travels over uneven surfaces, the boom suspension device can prevent the loader from experiencing severe bumps and impacts on the chassis 10 and the driver when transporting goods over uneven surfaces; it can both protect the chassis 10 and improve the driver's comfort.
[0028] Furthermore, the boom suspension device includes, for example, a sensing plate 41, a sensor 42, and a shock absorption device 43. The sensing plate 41 is fixedly connected to the boom 20, and the sensor 42 is fixedly connected to the frame 10. As the boom 20 rises and falls, the state of whether the sensor 42 detects the sensing plate 41 changes. For example, as the boom 20 rises and falls, within a certain range, the sensor 42 can detect the sensing plate 41; outside this range, the sensor 42 cannot detect the sensing plate 41.
[0029] The sensor 42 can send a corresponding control signal based on whether it detects the sensing plate 41, thereby controlling the shock absorption device 43 to perform shock absorption. For example, when the state of whether the sensor 42 detects the sensing plate 41 changes, that is, when the sensor 42 switches from being able to detect the sensing plate 41 to not detecting the sensing plate 41, or when the sensor 42 switches from not detecting the sensing plate 41 to being able to detect the sensing plate 41, the sensing plate 41 will send a control signal to control the shock absorption device 43 to perform shock absorption on the boom 20, so as to avoid impact on the boom 20, the frame 10 and the driver.
[0030] Furthermore, the boom suspension device also includes a three-position four-way valve 50; wherein, when the sensor 42 detects a change in the state of the sensing plate 41, that is, when the sensor 42 switches from being able to detect the sensing plate 41 to not being able to detect the sensing plate 41, or when the sensor 42 switches from not being able to detect the sensing plate 41 to being able to detect the sensing plate 41, the three-position four-way valve 50 will perform a reversing operation, and the hydraulic oil circuit of the boom suspension device will change, thereby realizing the shock absorption operation of the shock absorption device 43 on the boom 20.
[0031] For example, when sensor 42 detects sensing plate 41, the V3 position of three-position four-way valve 50 is energized; when sensor 42 does not detect sensing plate 41, three-position four-way valve 50 reverses, and the V2 position of three-position four-way valve 50 is energized.
[0032] Furthermore, energizing either V3 or V2 of the three-position four-way valve 50 can control the shock absorption device 43 to perform shock absorption. In other words, regardless of the position of the loader's boom 20, the suspension function can be activated without resetting the boom 20, shortening the activation time of the suspension function. This allows for timely shock absorption of the boom 20, frame 10, and driver when the loader travels over uneven surfaces, improving the shock absorption efficiency of the boom suspension device.
[0033] Furthermore, the shock absorption device 43 is an accumulator, and the three-position four-way valve 50 includes oil port P, oil port T, oil port A, and oil port B; oil port P is the oil inlet, oil port T is the oil return port, oil port B is connected to the lifting cylinder 30, and the accumulator is connected in parallel with the lifting cylinder 30 and then connected to oil port A; wherein, a control valve 60 is provided between oil port A and the accumulator.
[0034] In one specific embodiment, when the sensor 42 detects the sensing plate 41, the V3 position of the three-position four-way valve 50 is energized, and oil port P is connected to oil port B; when the sensor 42 does not detect the sensing plate 41, the three-position four-way valve 50 reverses, the V2 position of the three-position four-way valve 50 is energized, and oil port T is connected to oil port B, and oil port A is connected to oil port P.
[0035] Furthermore, control valve 60 is a ball valve.
[0036] Understandably, ball valves have a simple and compact structure and good sealing performance. Using ball valves as control valves 60 can effectively prevent hydraulic oil leakage in the boom suspension device and ensure the operational reliability of the hydraulic circuit of the boom suspension device.
[0037] Furthermore, when the control valve 60 is energized, the levitation function of the boom suspension device is activated, and the accumulator adjusts the oil circuit of the boom suspension device to dampen the boom 20. For example, the accumulator can be a single accumulator or an accumulator group consisting of two or more accumulators. In one specific embodiment, the accumulator has a piston-type structure.
[0038] Understandably, the accumulator can absorb the pressure shocks and fluctuations caused by uneven road surfaces to the boom 20, bucket, frame 10, and driver, further improving the operational stability of the loader during operation.
[0039] Furthermore, the boom 20 includes a reset state and a lifting state; when the boom 20 is in the reset state, the sensor 42 can detect the sensing plate 41, and the sensor 42 is in a conductive state. When the boom 20 is in the lifting state, the sensor 42 cannot detect the sensing plate 41, and the sensor 42 is in a disconnected state.
[0040] In one specific embodiment, when the boom 20 is in the reset state, the suspension function is activated, the V3 of the three-position four-way valve 50 is energized, the lifting cylinder 30 extends, and drives the boom 20 and the sensing plate 41 to lift upward until the sensing plate 41 disengages from the sensor 42. The sensor 42 can no longer detect the sensing plate 41, the sensor 42 is disconnected, the V1 of the ball valve is energized, and the suspension function of the boom suspension device is activated.
[0041] In one specific embodiment, when the boom 20 is in the lifting state, the suspension function is activated, the V2 of the three-position four-way valve 50 is energized, the lifting cylinder 30 retracts, driving the boom 20 and the sensing plate 41 to lower downwards until the sensor 42 detects the sensing plate 41, the sensor 42 is activated, the V1 of the ball valve is energized, and the suspension function of the boom suspension device is enabled.
[0042] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0043] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.
Claims
1. A loader, characterized in that, The loader includes: The boom (20) is mounted on the frame (10) in a height-adjustable manner; The lifting cylinder (30) is connected to the boom (20) and is used to drive the boom (20) to rise or fall. The boom suspension device is connected to the boom (20) and the lifting cylinder (30) via a signal connection. When the loader activates the suspension function, the boom suspension device can dampen the boom (20) according to the rise or fall of the boom (20).
2. The loader according to claim 1, characterized in that, The boom suspension device includes a sensing plate (41), a sensor (42), and a shock absorber (43). The sensing plate (41) is fixedly connected to the boom (20), and the sensor (42) is fixedly connected to the frame (10). As the boom (20) rises and falls, the state of whether the sensor (42) detects the sensing plate (41) will change. The sensor (42) can send a corresponding control signal according to whether it detects the sensing plate (41) to control the shock absorber (43) to perform shock absorption.
3. The loader according to claim 2, characterized in that, The boom suspension device further includes a three-position four-way valve (50); wherein, when the sensor (42) detects the sensing plate (41), the V3 of the three-position four-way valve (50) is energized; when the sensor (42) does not detect the sensing plate (41), the V2 of the three-position four-way valve (50) is energized.
4. The loader according to claim 3, characterized in that, When the V3 or V2 of the three-position four-way valve (50) is energized, the shock-absorbing device (43) can be controlled to perform shock absorption.
5. The loader according to claim 4, characterized in that, The shock absorption device (43) is an accumulator. The three-position four-way valve (50) includes oil port P, oil port T, oil port A, and oil port B. Oil port P is the oil inlet, oil port T is the oil return port, oil port B is connected to the lifting cylinder (30), and the accumulator is connected in parallel with the lifting cylinder (30) and then connected to oil port A. A control valve (60) is provided between oil port A and the accumulator.
6. The loader according to claim 5, characterized in that, The control valve (60) is a ball valve.
7. The loader according to claim 5, characterized in that, When the control valve (60) is energized, the suspension function of the boom suspension device is activated, and the accumulator adjusts the oil circuit of the boom suspension device to dampen the boom (20).
8. The loader according to any one of claims 5-7, characterized in that, The boom (20) includes a reset state and a lifting state; when the boom (20) is in the reset state, the sensor (42) can detect the sensing plate (41), and the sensor (42) is in the conducting state.
9. The loader according to claim 8, characterized in that, When the boom (20) is in the lifting state, the sensor (42) cannot detect the sensing plate (41), and the sensor (42) is in the disconnected state.
10. The loader according to claim 8, characterized in that, When the boom (20) is in the reset state, the suspension function is activated, the V3 of the three-position four-way valve (50) is energized, the lifting cylinder (30) extends, driving the boom (20) and the sensing plate (41) to lift upward until the sensor (42) can no longer detect the sensing plate (41), the sensor (42) is disconnected, the control valve (60) is energized, and the suspension function of the boom suspension device is activated.
11. The loader according to claim 9, characterized in that, The boom (20) includes a reset state and a lifting state; when the boom (20) is in the lifting state, the suspension function is activated, the V2 of the three-position four-way valve (50) is energized, the lifting cylinder (30) retracts, driving the boom (20) and the sensing plate (41) to lower downwards until the sensor (42) detects the sensing plate (41), the sensor (42) is activated, the control valve (60) is energized, and the suspension function of the boom suspension device is activated.