A slip loader based on anti-tilt protection structure

Abstract

The utility model discloses a kind of skid loaders based on anti-inclination protection structure, belong to engineering machinery technical field.The loader includes fuselage, lifting assembly and anti-inclination component;The anti-inclination component includes level sensor, reversing valve and extendable anti-inclination bar;When level sensor detects that fuselage inclination is out of limit, control reversing valve cut off lifting oil circuit and connect anti-inclination oil circuit, drive anti-inclination bar to extend support fuselage, simultaneously, its lifting assembly is through the linkage structure of movable arm and lifting arm, realize the approximate vertical lifting of shovel, make load center of gravity close to fuselage.The utility model combines initiative anti-inclination system with vertical lifting mechanism, solve the problem that existing skid loader is prone to overturning, longitudinal stability is poor, significantly improve the operation safety, stability and maximum lifting load of whole machine.

Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, and in particular to a skid steer loader based on an anti-tipping protection structure. Background Technology

[0002] Skid steer loaders, as a type of multi-functional engineering machinery, are widely used in confined space operating environments such as construction, municipal engineering, agriculture, forestry and ranching due to their advantages such as compact structure, maneuverability and strong on-the-spot turning ability.

[0003] However, while skid steer loaders offer high flexibility, their structural characteristics also introduce inherent safety hazards. Due to their shorter wheelbase and track, and the significant increase and forward shift of the machine's center of gravity when lifting materials, their stability is relatively poor. Specifically, in existing technology, most skid steer loaders employ traditional arc-shaped or Z-arm lifting mechanisms. In these mechanisms, as the bucket is lifted from a low position to a high position, the load moves forward and upward along an arc, causing the load's center of gravity to gradually move away from the vehicle body. This generates a large forward tilting moment, which not only limits the maximum lifting weight of the equipment but also greatly increases the risk of the equipment tipping forward when lifting heavy objects.

[0004] Furthermore, when skid steer loaders travel on uneven ground or slopes, or make rapid turns, the swaying of the vehicle body and centrifugal force can easily cause it to tip over. Currently, protective measures against this tipping risk mostly rely on the operator's driving experience and careful operation, or the installation of passive safety systems that can only issue audible and visual alarms. These measures cannot provide active physical intervention the moment the vehicle loses balance. Once tilting occurs, it is often difficult to avoid a tipping accident, posing a serious threat to the lives of the operators and the equipment itself.

[0005] Therefore, this utility model proposes a skid steer loader based on an anti-tilt protection structure to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems existing in the technology, skid steer loaders are prone to tipping when lifting heavy objects or operating on uneven ground due to the lack of active physical intervention, and their traditional lifting mechanism increases the forward tilting moment, affecting longitudinal stability. The present invention aims to provide a skid steer loader with an improved structure that can effectively solve the above problems based on an anti-tilt protection structure.

[0007] This utility model provides a skid steer loader based on an anti-tilt protection structure, comprising: a frame; a lifting assembly rotatably mounted on the frame; and an anti-tilt assembly mounted on the frame.

[0008] The anti-roll assembly includes a level sensor fixedly connected to the fuselage, an anti-roll bar retractably mounted within the fuselage, and a reversing valve.

[0009] Furthermore, the level sensor is electrically connected to the reversing valve, which is connected to a hydraulic power source, a lifting oil pipe for driving the lifting assembly, and an anti-tilt oil pipe for driving the anti-tilt bar. When the level sensor detects that the tilt angle exceeds a preset safety threshold, the reversing valve is controlled to cut off the oil supply to the lifting oil pipe and connect the anti-tilt oil pipe, thereby driving the anti-tilt bar to extend to support the machine body.

[0010] Preferably, the anti-roll bar has a movable head at its end, and a support plate is connected to the movable head. The movable head is used to automatically adjust the orientation of the support plate when the anti-roll bar extends out and contacts the ground.

[0011] Preferably, the anti-tilt assembly further includes a hydraulic oil tank and an oil outlet pipe, wherein the hydraulic oil tank is connected to the directional valve through the oil outlet pipe.

[0012] Preferably, the lifting assembly includes a support fixed to the machine body, a boom rotatably connected to the support at its lower side, a lifting arm rotatably connected to the upper side of the boom, and a hydraulic cylinder for driving the lifting arm to rotate. A bucket is connected to the end of the lifting arm.

[0013] Preferably, one end of the hydraulic cylinder is rotatably connected to the machine body, and the other end is rotatably connected to the lifting arm.

[0014] Preferably, the lifting assembly further includes a support rod, one end of which is rotatably connected to the bottom of the lifting arm, and the other end of which is rotatably connected to the machine body.

[0015] Preferably, a tire is installed at the bottom of the fuselage, and the tire is a wide-tread tire.

[0016] Preferably, the fuselage is equipped with a cockpit, and the door of the cockpit is equipped with a handle.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model, by setting up a linkage system consisting of a level sensor, a reversing valve, and an extendable anti-roll bar, can automatically cut off the hydraulic supply for lifting when the vehicle body tilt angle exceeds the safety threshold, and quickly extend the anti-roll bar to support the vehicle body. This solves the problem that existing skid steer loaders are prone to lateral tipping and endangering personnel safety during operation due to unstable center of gravity or misoperation. It achieves the technical effect of actively and quickly preventing tipping, thereby greatly improving the safety of operation.

[0019] 2. This utility model, by adopting a specific linkage structure of boom, lifting arm, hydraulic cylinder and support rod, makes the movement trajectory of the bucket during the lifting process approximately a vertical straight line. This solves the problem of traditional lifting mechanisms generating a large forward tilting moment, limiting longitudinal stability and lifting capacity due to pushing the load forward. It achieves the technical effect of keeping the load center of gravity close to the machine body during the lifting process, enhancing the longitudinal stability of the whole machine, and allowing the lifting of heavier loads.

[0020] 3. This utility model solves the problem of poor contact, insufficient support or slippage that may occur when the anti-tilt bar extends to support due to uneven ground by setting an automatically adjustable movable head and support plate at the end of the anti-tilt bar. This achieves the technical effect of enhancing the adaptability and support reliability of the anti-tilt device in complex terrain. Attached Figure Description

[0021] Figure 1 This is a perspective view of a skid steer loader based on an anti-tilt protection structure proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the anti-tilt component structure of a skid steer loader based on an anti-tilt protection structure proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the lifting assembly structure of a skid steer loader based on an anti-tilt protection structure proposed in this utility model.

[0024] Legend:

[0025] 1. Fuselage; 2. Cockpit; 3. Handle; 4. Tires; 5. Lifting assembly; 51. Support; 52. Boom; 53. Lifting arm; 54. Hydraulic cylinder; 55. Support rod; 6. Bucket; 7. Anti-tilt assembly; 71. Hydraulic oil tank; 72. Oil outlet pipe; 73. Directional valve; 74. Lifting oil pipe; 75. Anti-tilt oil pipe; 76. Anti-tilt bar; 77. Sliding head; 78. Support plate; 79. Level sensor. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. 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 based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Example:

[0028] Please refer to Figures 1 to 3This utility model provides a skid steer loader based on an anti-tipping protection structure, which aims to solve the problems of the risk of rollover and insufficient longitudinal stability when lifting heavy objects in existing skid steer loaders.

[0029] like Figure 1 As shown, the skid steer loader based on the anti-tilt protection structure includes a body 1, which serves as the mounting base for the entire device. A cab 2 is mounted on the body 1, and a handle 3 is provided on the door of the cab 2. Tires 4 are mounted on the bottom of the body 1. The skid steer loader also includes a lifting assembly 5 rotatably mounted on the body 1 and an anti-tilt assembly 7 mounted on the body 1. The lifting assembly 5 is used to lift the bucket 6 connected to its front end, and the anti-tilt assembly 7 is used to provide support and protection when the body 1 tilts.

[0030] To solve the above-mentioned technical problems, the core of the technical solution in this embodiment lies in the specific structure of the anti-tilt component 7 and its linkage control relationship with the lifting component 5.

[0031] Please refer to the following carefully. Figure 2 The anti-tilt assembly 7 includes a level sensor 79 fixedly connected to the fuselage 1, and an anti-tilt bar 76 retractably installed inside the fuselage 1. The end of the anti-tilt bar 76 has a movable head 77, on which a support plate 78 is connected. The anti-tilt assembly 7 also includes a hydraulic oil tank 71, an oil outlet pipe 72, a reversing valve 73, a lifting oil pipe 74, and an anti-tilt oil pipe 75. The hydraulic oil tank 71 is connected to the reversing valve 73 via the oil outlet pipe 72. The outlet of the reversing valve 73 is connected to the lifting oil pipe 74 and the anti-tilt oil pipe 75 respectively. The lifting oil pipe 74 is connected to the lifting assembly 5 to provide power. The anti-tilt oil pipe 75 is connected to the anti-tilt bar 76 to drive its extension and retraction. The level sensor 79 is connected to the reversing valve 76. The directional valve 73 is electrically connected. When the horizontal sensor 79 detects that the tilt angle of the machine body 1 exceeds the preset safety threshold, it controls the directional valve 73 to immediately cut off the passage to the lifting oil pipe 74 and at the same time connect the passage to the anti-tilt oil pipe 75. High-pressure hydraulic oil enters the anti-tilt bar 76 through the anti-tilt oil pipe 75, driving the anti-tilt bar 76 to extend obliquely downward from inside the machine body 1. The movable head 77 on it can automatically adjust the orientation of the support plate 78 to make it parallel to the ground. This linkage structure composed of sensors, valves and telescopic rods ensures that the lifting action that may aggravate the tilt can be actively cut off at the initial stage of the rollover and effective support can be quickly formed, thereby preventing the rollover from occurring.

[0032] Based on the above embodiments, the present invention may further include the following preferred technical solutions:

[0033] As a preferred embodiment, please refer to Figure 1 and Figure 3The specific structure of the lifting assembly 5 is defined as follows: the lifting assembly 5 includes a support 51 fixed to the machine body 1, the lower side of the boom 52 is rotatably connected to the support 51, the lifting arm 53 is rotatably connected to the upper side of the boom 52, the end of the lifting arm 53 is connected to the bucket 6, one end of the hydraulic cylinder 54 is rotatably connected to the machine body 1, and the other end is rotatably connected to the lifting arm 53, which is used to drive the lifting arm 53 to rotate. The lifting assembly 5 also includes a support rod 55, one end of the support rod 55 is rotatably connected to the bottom of the lifting arm 53, and the other end is rotatably connected to the machine body 1.

[0034] As another preferred embodiment, please refer to Figure 2 In order to better adapt to the ground when the anti-roll component 7 is extended, the anti-roll bar 76 is provided with a movable head 77 at the end away from the fuselage 1, and the support plate 78 is connected to the end of the anti-roll bar 76 through the movable head 77.

[0035] As another preferred embodiment, please refer to Figure 1 In order to improve the stability of the machine, the tires 4 installed at the bottom of the machine body 1 are wide-tread tires.

[0036] The working principle of this skid steer loader based on the anti-tilt protection structure is as follows:

[0037] When the operator manipulates the lifting assembly 5 to load or unload goods, the hydraulic cylinder 54 extends to push the lifting arm 53. The end of the lifting arm 53 rotates around the connection point on the upper side of the boom 52, while the boom 52 rotates around the support 51 connected to its lower side. The support rod 55 connected to the bottom of the lifting arm 53 provides support as the lifting arm 53 moves. The boom 52 tilts forward or backward as the lifting arm 53 moves, making the upward trajectory of the bucket 6 connected to the end of the lifting arm 53 an approximately vertical straight line. In this way, the center of gravity of the load is always closer to the machine body during the lifting process, reducing the forward tilting moment. During the operation of the entire machine, the anti-tilting assembly 7 continuously monitors. When the machine body 1 tilts and the level sensor 79 on the hydraulic oil tank 71 detects that the tilt angle exceeds the safety threshold, the level sensor 79 sends a signal to the reversing valve 73. The reversing valve 73 immediately disconnects from the lifting oil pipe 74 and connects to the anti-tilt oil pipe 75. The hydraulic oil then enters the anti-tilt bar 76 through the anti-tilt oil pipe 75 and pushes the anti-tilt bar 76 out of the machine body 1 at an angle downward. The movable head 77 on the anti-tilt bar 76 automatically adjusts the orientation of the support plate 78 to keep it parallel to the ground, thereby lifting the device before it tilts and restoring its balance. At the same time, the wide tread design of the tires 4 also makes the device travel more smoothly.

[0038] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A skid steer loader based on an anti-tilt protection structure, comprising: Fuselage (1); A lifting assembly (5) rotatably mounted on the fuselage (1); and an anti-tilt assembly (7) installed on the fuselage (1); characterized in that the anti-tilt assembly (7) comprises: A horizontal sensor (79) fixedly connected to the fuselage (1) is used to detect the tilt angle of the fuselage (1); An anti-tilt bar (76) that is retractably installed inside the fuselage (1) and can extend diagonally downward; And the reversing valve (73); The reversing valve (73) is connected to the hydraulic power source, the lifting oil pipe (74) for driving the lifting assembly (5), and the anti-roll oil pipe (75) for driving the anti-roll bar (76); The level sensor (79) is electrically connected to the reversing valve (73) so that when the tilt angle is detected to exceed a preset safety threshold, the reversing valve (73) is controlled to cut off the oil supply of the lifting oil pipe (74) and connect the anti-tilt oil pipe (75) to drive the anti-tilt bar (76) to extend to support the fuselage (1).

2. The skid steer loader based on an anti-tipping protection structure according to claim 1, characterized in that, The anti-roll bar (76) has a movable head (77) at its end, and a support plate (78) is connected to the movable head (77). The movable head (77) is used to automatically adjust the orientation of the support plate (78) when the anti-roll bar (76) extends out and contacts the ground.

3. The skid steer loader based on an anti-tipping protection structure according to claim 1, characterized in that, The anti-tilt assembly (7) also includes a hydraulic oil tank (71) and an oil outlet pipe (72), wherein the hydraulic oil tank (71) is connected to the directional valve (73) through the oil outlet pipe (72).

4. The skid steer loader based on an anti-tipping protection structure according to claim 1, characterized in that, The lifting assembly (5) includes: A support (51) fixed to the fuselage (1); Its lower side is rotatably connected to the arm (52) of the support (51); A lifting arm (53) is rotatably connected to the upper side of the boom (52), and a bucket (6) is connected to the end of the lifting arm (53); And a hydraulic cylinder (54) that drives the lifting arm (53) to rotate.

5. The skid steer loader based on an anti-tipping protection structure according to claim 4, characterized in that, One end of the hydraulic cylinder (54) is rotatably connected to the machine body (1), and the other end is rotatably connected to the lifting arm (53).

6. The skid steer loader based on an anti-tipping protection structure according to claim 4, characterized in that, The lifting assembly (5) also includes a support rod (55), one end of which is rotatably connected to the bottom of the lifting arm (53), and the other end is rotatably connected to the body (1).

7. The skid steer loader based on an anti-tilt protection structure according to claim 1, characterized in that, The bottom of the fuselage (1) is fitted with a tire (4), which is a wide-tread tire.

8. The skid steer loader based on an anti-tipping protection structure according to claim 1, characterized in that, The fuselage (1) is provided with a cockpit (2), and the door of the cockpit (2) is provided with a handle (3).

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