Angle limiting stopper of loading machine

Abstract

The utility model provides a loader angle limiter, which comprises a front frame and a rear frame, the front frame is connected with a loading hopper, the rear frame is provided with an operation room and a power area, the opposite sides of the front frame and the rear frame are respectively and symmetrically provided with a hinged plate I and a hinged plate II up and down, and the hinged plate I and the hinged plate II are connected through a hinged shaft. A limiting mechanism is further arranged between the first hinge plate and the second hinge plate and comprises an installation base, limiting arms, an adjusting mechanism and limiting blocks, the installation base is fixedly installed on the second hinge plate, the limiting arms are symmetrically installed on the installation base and located on the two sides of the second hinge plate, and the limiting blocks are installed at the ends of the limiting arms through the adjusting mechanism. And when the included angle between the first hinge plate and the second hinge plate becomes smaller, the stop blocks and the limiting blocks are used for limiting, the arranged limiting mechanism is simple in structure, convenient to install, flexible to adjust and accurate in limiting, the working efficiency of the loader can be remarkably improved, and the service life of the loader can be remarkably prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of loaders, in particular to a loader angle limiter. Background Technique

[0002] A loader is a kind of earthwork construction machinery widely used in highway, railway, construction, hydropower, port, mine and other construction projects. It is mainly used for shoveling bulk materials such as soil, sand, gravel, lime, coal, etc., and can also do light shoveling operations on ores, hard soil, etc. By replacing different auxiliary working devices, it can also perform earthmoving, lifting and other operations such as loading and unloading of other materials such as wood.

[0003] During the working process of the existing loaders, the turning angles of the bucket or other working parts are often controlled by the operator's experience and intuitive judgment. This method is not only inefficient but also has great potential safety hazards. To solve this problem, a variety of angle limiting devices have emerged on the market. They often lack buffering during the limiting process, which is easy to cause impact and damage. Therefore, a loader angle limiting structure with both accurate limiting function and buffer mechanism is needed.

[0004] The purpose of the utility model is to provide a loader angle limiter to solve the problems mentioned in the above background technique. Content of the Utility Model

[0005] To achieve the above purpose, the utility model provides a loader angle limiter, which includes a front frame and a rear frame. The front frame is connected with a loading bucket. The rear frame is provided with an operation room and a power area. The bottom of the front frame and the rear frame is provided with front wheels and rear wheels. The front wheels and the rear wheels are controlled to turn through the operation room. On the opposite sides of the front frame and the rear frame, a hinge plate one and a hinge plate two are symmetrically arranged up and down respectively. The hinge plate one and the hinge plate two are connected by a hinge shaft. A limiting mechanism is also arranged between the hinge plate one and the hinge plate two. The limiting mechanism includes a mounting seat, a limiting arm, an adjusting mechanism, and a limiting block. The mounting seat is fixedly installed on the hinge plate two. The limiting arms are symmetrically installed on the mounting seat. The limiting arms are located on both sides of the hinge plate two. The limiting block is installed at the end of the limiting arm through the adjusting mechanism. A stop block is arranged on the hinge plate one at the position corresponding to the symmetric limiting arms. When the included angle between the hinge plate one and the hinge plate two becomes smaller, the stop block and the limiting block are used for limiting.

[0006] As a further improvement of the utility model, the second hinge plate includes a first mounting plate and a second mounting plate. The same end of the first mounting plate and the second mounting plate is fixedly connected to the rear frame and is parallel to each other. The mounting seat is fixedly installed between the first mounting plate and the second mounting plate. The limiting arms are symmetrically installed on the mounting seat. A cavity is provided inside the limiting arms, and the adjusting mechanism is movably installed in the cavity.

[0007] As a further improvement of the utility model, the adjusting mechanism includes an adjusting screw and an adjusting nut. One end of the adjusting screw extends into the cavity from the end of the limiting arm. The nut is rotatably installed at the end of the limiting arm. The adjusting screw is threadedly connected to the nut. The limiting block is movably installed at the end of the adjusting screw.

[0008] As a further improvement of the utility model, cylinders are symmetrically installed on the second hinge plate at the lower end of the rear frame. The telescopic end of the cylinder is connected to the relatively arranged first hinge plate. The front frame can be controlled to turn through the cylinder.

[0009] As a further improvement of the utility model, an activity cavity is provided at the end of the adjusting screw. A buffer rod is fixedly installed at one end of the limiting block facing the adjusting screw. The buffer rod extends into the activity cavity. A buffer spring is sleeved on the outer wall of the buffer rod. A fixed block is fixedly installed at the end of the adjusting screw. The two ends of the buffer spring are respectively connected and fixed to the outer walls of the opposite sides of the limiting block and the fixed block.

[0010] As a further improvement of the utility model, guide grooves are symmetrically provided on the inner wall of the activity cavity of the adjusting screw. Guide blocks are provided on the outer wall of the buffer rod and are matched with the guide grooves. The guide blocks are slidably installed in the guide grooves.

[0011] As a further improvement of the utility model, the operation room includes a steering wheel and an operating rod. The steering wheel is used to control the front wheels to turn. The operating rod is used to control the loading bucket to operate. The power area includes an engine. The engine is installed on the rear frame. A driver's seat is provided above the engine.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model is provided with a limiting mechanism. The overall structure of the limiting mechanism is simple, and the mounting plate is reasonably designed, which is convenient for quick installation and fixation on the loader. Through the cooperation between the limiting arm in the limiting mechanism on the rear frame and the stop block provided on the front frame, the rotation angle of the front frame can be limited, preventing structural damage or instability caused by excessive rotation, thereby improving the overall stability and safety of the loader.

[0014] 2. The utility model is provided with an adjusting mechanism on the limiting arm. The design of the adjusting mechanism on the limiting arm facilitates the operator to flexibly adjust according to the operation requirements, effectively preventing the bucket from damaging the working device hydraulic cylinder of the loader due to excessive or too small angles, and prolonging the service life of the equipment.

[0015] 3. The utility model is also provided with an auxiliary buffering mechanism in the adjusting mechanism. By movably arranging a buffer rod and a buffer spring between the limiting block and the adjusting screw, it can absorb impacts and vibrations when the block on the first articulated plate collides with the limiting block, reduce wear and looseness at the articulated part, prolong the service life of the articulated structure, and enable the loader to be more stable during operation by restricting the rotation angle and reducing vibrations, reducing operation interruptions caused by vibrations or instability, thereby improving the operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic three-dimensional structure diagram of the loader of the utility model;

[0017] Figure 2 is a schematic connection structure diagram of the first articulated plate and the second articulated plate of the utility model;

[0018] Figure 3 is a three-dimensional view of the limiting mechanism of the utility model;

[0019] Figure 4 is of the utility model Figure 3 separation diagram of each component;

[0020] Figure 5 is a side view of the first articulated plate and the second articulated plate of the utility model.

[0021] In the figure: 1. Front frame; 11. Loading bucket; 12. First articulated plate; 13. Block;

[0022] 2. Rear frame; 21. Operator's cab; 22. Driver's seat; 23. Power area; 24. Control lever; 25. Steering wheel; 26. Second articulated plate; 261. First mounting plate; 262. Second mounting plate;

[0023] 3. Articulated shaft;

[0024] 4. Limiting mechanism; 41. Mounting seat; 42. Limiting arm; 43. Adjusting screw; 44. Adjusting nut; 45. Limiting block; 46. Buffer rod; 47. Buffer spring; 48. Guide groove; 49. Guide block; 410. Fixed block;

[0025] 5. Cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present utility model are given in the drawings. However, the present utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosed content of the present utility model more thorough and comprehensive.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0028] The following further describes the present utility model in detail with reference to the drawings.

[0029] Embodiment 1:

[0030] Please refer to Figures 1-5 , the present utility model provides a loader angle limiter, which includes a front frame 1 and a rear frame 2. The front frame 1 is connected with a loading bucket 11. The rear frame 2 is provided with an operation cab 21 and a power area 23. The bottom of the front frame 1 and the rear frame 2 is provided with front wheels and rear wheels. The front wheels and the rear wheels are steered through the operation cab 21. On the opposite sides of the front frame 1 and the rear frame 2, a first hinge plate 12 and a second hinge plate 26 are symmetrically arranged up and down. The first hinge plate 12 and the second hinge plate 26 are connected by a hinge shaft 3. A limiting mechanism 4 is further arranged between the first hinge plate 12 and the second hinge plate 26. The limiting mechanism 4 includes a mounting seat 41, a limiting arm 42, an adjusting mechanism, and a limiting block 45. The mounting seat 41 is fixedly installed on the second hinge plate 26. The limiting arms 42 are symmetrically installed on the mounting seat 41. The limiting arms 42 are located on both sides of the second hinge plate 26. The limiting block 45 is installed at the end of the limiting arm 42 through the adjusting mechanism. A stop block 13 is arranged on the first hinge plate 12 at the position corresponding to the symmetric limiting arms 42. When the included angle between the first hinge plate 12 and the second hinge plate 26 becomes smaller, the stop block 13 and the limiting block 45 are used for limiting. In order to prevent the loader structure from being damaged or becoming unstable due to excessive rotation, a limiting mechanism 4 is arranged at the hinge of the first hinge plate 12 and the second hinge plate 26 of the front frame 1 and the rear frame 2. The limiting arms 42 of the limiting mechanism 4 are symmetrically installed on the second hinge plate 26, and a stop block 13 is arranged on the first hinge plate 12 to cooperate with the limiting block 45 on the limiting arm 42. When the first hinge plate 12 rotates to the position limited by the second hinge left and right, the stop block 13 and the limiting block 45 on the limiting arm 42 are used for limiting and blocking, thereby improving the overall stability and safety of the loader.

[0031] The second hinge plate 26 includes a first mounting plate 261 and a second mounting plate 262. The same ends of the first mounting plate 261 and the second mounting plate 262 are fixedly connected to the rear frame 2 and are parallel to each other. The mounting seat 41 is fixedly installed between the first mounting plate 261 and the second mounting plate 262. The limiting arms 42 are symmetrically installed on the mounting seat 41. A cavity is provided inside the limiting arms 42, and the adjusting mechanism is movably installed in the cavity. By providing a cavity in the limiting arms 42, it is convenient for the adjusting mechanism to adjust the length inside the limiting arms 42, thereby restricting the limiting angle.

[0032] The operation cab 21 includes a steering wheel 25 and an operating lever 24. The steering wheel 25 is used to control the front wheels to steer, and the operating lever 24 is used to control the loading bucket 11 to operate. The power area 23 includes an engine, and the engine is installed on the rear frame 2. A driver's seat 22 is provided above the engine.

[0033] In this embodiment, a limiting mechanism 4 is provided. The overall structure of the limiting mechanism 4 is simple, and the mounting plate is reasonably designed, which is convenient for quick installation and fixation on the loader. By the cooperation of the limiting arm 42 in the limiting mechanism 4 on the rear frame 2 and the stopper 13 provided on the front frame 1, the rotation angle of the front frame 1 can be restricted, preventing structural damage or instability caused by excessive rotation, thereby improving the overall stability and safety of the loader.

[0034] Embodiment Two:

[0035] On the basis of Embodiment One, in this embodiment, as Figures 2-4 shown, the adjusting mechanism includes an adjusting screw 43 and an adjusting nut 44. One end of the adjusting screw 43 extends into the cavity from the end of the limiting arm 42. The nut is rotatably installed at the end of the limiting arm 42. The adjusting screw 43 is threadedly connected to the nut. The limiting block 45 is movably installed at the end of the adjusting screw 43. The adjusting screw 43 and the adjusting nut 44 are movably installed on the limiting arm 42. By rotating the adjusting nut 44, the adjusting screw 43 is controlled to move on the limiting arm 42, which is convenient for adjusting the position of the limiting block 45 according to the actual angle limiting requirement, thereby realizing precise limiting of the angle of the working device of the loader.

[0036] Cylinders 5 are symmetrically installed on the second hinge plate 26 at the lower end of the rear frame 2. The telescopic ends of the cylinders 5 are connected to the relatively arranged first hinge plate 12. The front frame 1 can be controlled to steer by the cylinders 5.

[0037] In this embodiment, an adjusting mechanism is provided on the limiting arm 42. The design of the adjusting mechanism on the limiting arm 42 facilitates flexible adjustment by the operator according to the operation requirements, effectively preventing the bucket from damaging the working device hydraulic cylinder of the loader due to excessive or too small an angle, and extending the service life of the equipment.

[0038] Embodiment Three:

[0039] Based on Embodiment One, in this embodiment, as Figures 3-4 shown, an activity cavity is provided at the end of the adjusting screw 43. A buffer rod 46 is fixedly installed at one end of the limiting block 45 facing the adjusting screw 43. The buffer rod 46 extends into the activity cavity. A buffer spring 47 is sleeved on the outer wall of the buffer rod 46. A fixed block 410 is fixedly installed at the end of the adjusting screw 43. Both ends of the buffer spring 47 are connected and fixed to the outer walls of the opposite sides of the limiting block 45 and the fixed block 410. When the stop block 13 on the first articulated frame impacts and touches the limiting block 45 at the end of the adjusting screw 43, the limiting block 45 will compress the buffer spring 47. At this time, the buffer rod 46 connected to the limiting block 45 extends in the activity cavity of the adjusting screw 43. Under the action of the buffer spring 47, it can avoid the impact force of the stop block 13 being too large or the parts being damaged due to multiple impacts on the limiting block 45. To a certain extent, it can play a buffering role, thereby protecting the parts. Moreover, both the stop block 13 and the limiting block 45 are made of flexible materials to reduce impact and damage.

[0040] On the inner wall of the activity cavity of the adjusting screw 43, guiding grooves 48 are symmetrically provided. On the outer wall of the buffer rod 46, guiding blocks 49 matching the guiding grooves 48 are provided. The guiding blocks 49 are slidably installed in the guiding grooves 48. After the stop block 13 on the first articulated plate 12 collides with the limiting block 45 on the second articulated plate 26, when the limiting block 45 pushes the buffer rod 46 to move in the activity cavity of the adjusting screw 43, the guiding blocks 49 on the outer wall of the buffer rod 46 slide along the guiding grooves 48 on the inner wall of the activity cavity, which can improve the stability of the buffer rod 46 when moving in the activity cavity.

[0041] In this embodiment, an auxiliary buffering mechanism is provided in the adjusting mechanism. By movably arranging the buffer rod 46 and the buffer spring 47 between the limiting block 45 and the adjusting screw 43, it can absorb impact and vibration when the stop block 13 on the first articulated plate 12 collides with the limiting block 45, reduce the wear and looseness at the articulated part, and extend the service life of the articulated structure. By limiting the rotation angle and reducing vibration, the loader can operate more smoothly during operation, reducing operation interruptions caused by vibration or instability, thereby improving operation efficiency.

[0042] The above exemplary description of the present utility model is made in conjunction with the accompanying drawings. Obviously, the specific implementation of the present utility model is not limited by the above methods. As long as such non-substantial improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

Claims

1. A loader angle limiter, comprising a front frame (1) and a rear frame (2), characterized in that: The front frame (1) is connected with a loading bucket (11). The rear frame (2) is provided with an operation room (21) and a power area (23). The bottom of the front frame (1) and the rear frame (2) is provided with front wheels and rear wheels. The front wheels and the rear wheels are controlled and steered through the operation room (21). On the opposite sides of the front frame (1) and the rear frame (2), a first hinge plate (12) and a second hinge plate (26) are symmetrically arranged up and down respectively. The first hinge plate (12) and the second hinge plate (26) are connected by a hinge shaft (3). A limiting mechanism (4) is further arranged between the first hinge plate (12) and the second hinge plate (26). The limiting mechanism (4) includes a mounting seat (41), a limiting arm (42), an adjusting mechanism, and a limiting block (45). The mounting seat (41) is fixedly installed on the second hinge plate (26). The limiting arms (42) are symmetrically installed on the mounting seat (41). The limiting arms (42) are located on both sides of the second hinge plate (26). The limiting block (45) is installed at the end of the limiting arm (42) through the adjusting mechanism. A stop block (13) is arranged on the first hinge plate (12) at the position corresponding to the symmetric limiting arms (42). When the included angle between the first hinge plate (12) and the second hinge plate (26) becomes smaller, the stop block (13) and the limiting block (45) are used for limiting.

2. The angle limiter of a loader according to claim 1, wherein: The second hinge plate (26) includes a first mounting plate (261) and a second mounting plate (262). The same ends of the first mounting plate (261) and the second mounting plate (262) are fixedly connected to the rear frame (2) and are parallel to each other. The mounting seat (41) is fixedly installed between the first mounting plate (261) and the second mounting plate (262). The limiting arms (42) are symmetrically installed on the mounting seat (41). A cavity is arranged inside the limiting arms (42). The adjusting mechanism is movably installed in the cavity.

3. The angle limiter for a loader according to claim 2, characterized in that: The adjusting mechanism includes an adjusting screw (43) and an adjusting nut (44). One end of the adjusting screw (43) extends into the cavity from the end of the limiting arm (42). The nut is rotatably installed at the end of the limiting arm (42). The adjusting screw (43) is in threaded connection with the nut. The limiting block (45) is movably installed at the end of the adjusting screw (43).

4. A loader angle limiter according to claim 1, characterized in that: Cylinders (5) are symmetrically installed on the second hinge plate (26) at the lower end of the rear frame (2). The telescopic ends of the cylinders (5) are connected to the opposite first hinge plates (12). The steering of the front frame (1) can be controlled through the cylinders (5).

5. The angle limiter for a loader according to claim 3, characterized in that: An end of the adjusting screw rod (43) is provided with a movable cavity. One end of the limiting block (45) facing the adjusting screw rod (43) is fixedly installed with a buffer rod (46). The buffer rod (46) extends into the movable cavity. A buffer spring (47) is sleeved on an outer wall of the buffer rod (46). A fixed block (410) is fixedly installed at a end of the adjusting screw rod (43). Two ends of the buffer spring (47) are respectively connected and fixed to outer walls of opposite sides of the limiting block (45) and the fixed block (410).

6. The angle limiter of a loader according to claim 5, characterized in that: Guide grooves (48) are symmetrically arranged on an inner wall of the movable cavity of the adjusting screw rod (43). Guide blocks (49) matched with the guide grooves (48) are arranged on an outer wall of the buffer rod (46). The guide blocks (49) are slidably installed in the guide grooves (48).

7. A loader angle limiter according to claim 1, characterized in that: The operation room (21) includes a steering wheel (25) and an operation lever (24). The steering wheel (25) is used for controlling the front wheels to steer. The operation lever (24) is used for controlling the loading bucket (11) to operate. The power area (23) includes an engine. The engine is installed on the rear vehicle frame (2). A driver's seat (22) is arranged above the engine.

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