Rocker arm structure for loading machine

Abstract

The utility model discloses a rocker arm structure for a loader, which relates to the technical field of rocker arms and comprises a mounting seat, the mounting seat is mounted on the loader, a mounting chamber is arranged in the mounting seat, an anti-falling structure is mounted in the mounting chamber, and the anti-falling structure comprises a fixing rod mounted in the mounting chamber. A flywheel is rotationally connected between the two fixing rods, a rotating shaft penetrating through the two sides of the flywheel is fixedly connected to the middle of the flywheel, a first fixing disc and a second fixing disc are installed on the two sides of the flywheel correspondingly, and clamping blocks which are annularly distributed at equal intervals are arranged on the inner side of the first fixing disc. According to the rocker arm structure for the loading machine, through the linkage design of the flywheel, the rotating shaft, the positioning buckle and the spring, when the main rocker arm accidentally and rapidly falls down, centrifugal force triggers the positioning buckle to be clamped with the first fixing disc, rotation of the rotating shaft is rapidly stopped, and braking of the cable is achieved. The anti-falling mechanism can effectively prevent the main rocker arm and the bucket from continuously falling, so that the operation safety of equipment and personnel is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a swing arm technical field, concretely is a swing arm structure for loader. BACKGROUND

[0002] The swing arm of the loader is one of its key components, mainly used for lifting and lowering the bucket or other accessories, and the movement of the swing arm directly affects the operational flexibility and work efficiency of the loader.

[0003] In order to realize the above function, the prior art (publication number: CN211922763U) discloses a double swing arm loader arm structure, which belongs to the field of engineering machinery. It overcomes the defects of poor processability, poor bearing capacity, and easy cracking of the weld of the swing arm support plate of the existing arm structure. It comprises an arm plate, an arm beam and a swing arm support plate. The arm plate is welded around the contact with the arm beam. The swing arm support plate has a connecting hole. The connecting hole of the swing arm support plate is welded around the arm beam. The outer swing arm support plate is in contact with the arm plate and is fixedly connected. The swing arm support plate has the advantages of simple structure, good processing process and strong bearing capacity.

[0004] Although the prior art can overcome the above-mentioned deficiencies, there are still other problems in its operation process: when the bucket is overloaded or used irregularly during the loading process of the swing arm, the swing arm may drop. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a swing arm structure for loader to solve the problem that the swing arm may drop when the bucket is overloaded or used irregularly during the loading process of the swing arm in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a swing arm structure for loader, comprising a mounting seat, the mounting seat is mounted on the loader, and the mounting seat is internally provided with a mounting chamber, and the mounting chamber is internally provided with an anti-falling structure;

[0007] The anti-falling structure comprises a fixed rod mounted in the mounting chamber, and a flywheel rotatably connected between the two fixed rods, the flywheel is fixedly connected with a rotating shaft penetrating through both sides thereof, and the flywheel is provided with a first fixed disc and a second fixed disc on both sides thereof, the first fixed disc is internally provided with annularly and equidistantly distributed clamping blocks, and the rotating shaft is rotatably connected with two rotationally symmetrical positioned buckles at the inner end portion thereof.

[0008] Preferably, the rotating shaft is mounted in the middle of the clamping block, and the rotating shaft is mounted in the fixed rod after penetrating through the clamping block, the positioned buckle is fixedly connected with a spring on the side close to the middle of the first fixed disc, and the spring and the rotating shaft are connected with each other.

[0009] Preferably, a spring ring is mounted outside the end of the rotating shaft away from the spring, and the spring ring is fixedly connected to the inner side of the second fixed disc, and the rotating shaft is mounted inside the fixed rod after penetrating through the second fixed disc.

[0010] Preferably, a cable is wound outside the flywheel, and the cable extends upwards inside the mounting seat, and two symmetrically distributed lifting rods are fixedly connected to the top of the mounting seat.

[0011] Preferably, two positioning wheels are mounted inside the lifting rods, and the upper ends of the lifting rods are inclined towards the front side of the mounting seat, the cable is mounted outside the lifting rods, and a pull rod is fixedly connected to the end of the cable away from the flywheel.

[0012] Preferably, a main rocker arm is rotatably connected to each end of the top of the mounting seat, a hydraulic rod is mounted between the middle of the main rocker arm and the mounting seat, a connecting block is fixedly connected to the inner side of each of the two main rocker arms, and the inner side of the connecting block and the two ends of the pull rod are rotatably connected to each other.

[0013] Preferably, an adjusting rod is rotatably connected inside the main rocker arm, a hydraulic rod is mounted between the top of the adjusting rod and the mounting seat, a bucket is mounted at the end of the main rocker arm away from the mounting seat, a connecting rod is rotatably connected to the lower end of the adjusting rod, and the connecting rod and the bucket are rotatably connected to each other.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] The rocker arm structure for the loader is linked through the flywheel, the rotating shaft, the positioning buckle and the spring, when the main rocker arm suddenly and rapidly falls, the centrifugal force triggers the positioning buckle to be clamped with the first fixed disc, the rotation of the rotating shaft is rapidly stopped, and the cable is braked. The anti-falling mechanism can effectively prevent the main rocker arm and the bucket from continuing to fall, and ensures the operation safety of the equipment and personnel.

[0016] During the normal operation of the loader, the cable can be stably reeled and unreeled, the flywheel continuously provides power support, a complex electric control system is not needed, the maintenance cost is reduced, and the operation stability and reliability are improved. DRAWINGS

[0017] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0018] Figure 2 It is a mounting seat cross section structure schematic view of the utility model;

[0019] Figure 3 It is a flywheel structure schematic view of the utility model;

[0020] Figure 4 It is a block structure schematic view of the utility model;

[0021] Figure 5 A schematic diagram of a clock spring structure of the utility model is shown in the figure.

[0022] Figure 6 A schematic diagram of a main rocker structure of the utility model is shown in the figure.

[0023] In the figure: 1, mounting seat; 2, mounting chamber; 3, fixed rod; 4, flywheel; 5, rotating shaft; 6, first fixed disc; 7, clamping block; 8, positioning buckle; 9, spring; 10, second fixed disc; 11, clock spring; 12, cable; 13, lifting rod; 14, positioning wheel; 15, pull rod; 16, main rocker; 17, connecting block; 18, adjusting rod; 19, connecting rod; 20, bucket. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] Embodiment one: please refer to Figure 1 - Figure 6 The utility model provides the following technical scheme: a rocker structure for a loader, including mounting seat 1, mounting seat 1 is installed on the loader, and mounting seat 1 is equipped with mounting chamber 2 inside, and anti -fall structure is installed in mounting chamber 2, and anti -fall structure includes the fixed rod 3 of installing in mounting chamber 2 inside, and the flywheel 4 of rotationally connected between two fixed rods 3, the rotating shaft 5 of fixedly connected in the middle of flywheel 4 is through its both sides, and flywheel 4 both sides are equipped with first fixed disc 6 and second fixed disc 10 respectively, the clamping block 7 of annular equidistance distribution is equipped with in first fixed disc 6 inboard, and the two rotating symmetry distribution's positioning buckle 8 of rotating shaft 5 inside end portion rotationally connected, rotating shaft 5 is installed in the middle of clamping block 7, and rotating shaft 5 is installed in the inside of fixed rod 3 after passing through clamping block 7, and the spring 9 of fixedly connected with rotating shaft 5 is connected with each other in the side close to the middle of first fixed disc 6 of positioning buckle 8, rotating shaft 5 one end outside away from spring 9 is equipped with clock spring 11, and clock spring 11 is fixedly connected in second fixed disc 10 inboard, and rotating shaft 5 is installed in the inside of fixed rod 3 after passing through second fixed disc 10, flywheel 4 outside is wound with cable 12, and cable 12 extends upwards in the inside of mounting seat 1, and the top of mounting seat 1 is fixedly connected with two symmetrical distribution's lifting rod 13, two positioning wheels 14 are installed in the inside of lifting rod 13, and the upper end of lifting rod 13 is inclined towards the front side of mounting seat 1, cable 12 is installed on the outside of lifting rod 13, and the one end of cable 12 fixedly connected with pull rod 15 away from flywheel 4.

[0026] During normal operation of the loader, the main rocker arm 16, driven by a hydraulic rod, swings up and down on the front side of the mounting base 1, driving the bucket 20 to load and unload materials. During the movement of the main rocker arm 16, the connecting block 17 fixedly connected to it pulls the tie rod 15 up and down. The movement of the tie rod 15 causes the cable 12 connected to its top to move accordingly.

[0027] One end of the cable 12 is wrapped around the outside of the flywheel 4. When the cable is pulled, it will drive the flywheel 4 to rotate. The flywheel rotates synchronously through the central shaft 5. At the same time, the flywheel 4 is connected to the spring coil 11. The spring coil always provides a certain rotational force to the flywheel, ensuring that the cable 12 can be stably and evenly wound and unwound.

[0028] When the main rocker arm 16 falls rapidly due to mechanical failure or other reasons, the bucket 20 and connecting block 17 will also fall rapidly, thereby significantly pulling the cable 12. The kinetic force transmitted by the cable drives the flywheel 4 to rotate at high speed, and drives the rotating shaft 5 to rotate faster through the flywheel. As the rotation speed of the rotating shaft 5 gradually increases, the centrifugal force on the positioning buckles 8 located at both ends inside the rotating shaft also increases significantly. When the centrifugal force exceeds the tension of the spring 9, the positioning buckles 8 overcome the limitation of the spring, shift outward and move towards the direction of the first fixed plate 6.

[0029] The positioning buckle 8 on the rotating shaft 5 is finally embedded into the locking block 7 inside the first fixed plate 6, forming a locking state. This locking mechanism causes the rotating shaft 5 to stop rotating immediately, and at the same time prevents the flywheel 4 from operating further. The stopping of the flywheel 4 means that the cable 12 can no longer be released, thereby preventing the movement of the lever 15, thus effectively locking the main rocker arm 16 and the bucket 20 in the fall, avoiding greater damage or danger.

[0030] Example 2: Based on Example 1, the following structure is also disclosed: Both ends of the top of the mounting base 1 are rotatably connected to the main rocker arm 16, and a hydraulic rod is installed between the middle of the main rocker arm 16 and the mounting base 1. Connecting blocks 17 are fixedly connected to the inner sides of the two main rocker arms 16, and the inner sides of the connecting blocks 17 and the two ends of the pull rod 15 are rotatably connected to each other. An adjusting rod 18 is rotatably connected inside the main rocker arm 16, and a hydraulic rod is installed between the top of the adjusting rod 18 and the mounting base 1. A bucket 20 is installed at the end of the main rocker arm 16 away from the mounting base 1, and a connecting rod 19 is rotatably connected to the lower end of the adjusting rod 18, and the connecting rod 19 and the bucket 20 are rotatably connected to each other.

[0031] The main rocker arm 16 is driven by a hydraulic rod at the center of its bottom, and swings up and down around the mounting base 1 with the top of the mounting base 1 as the fulcrum. During the lifting or lowering process, the main rocker arm 16 drives the bucket 20 to complete the loading or unloading of materials. When the main rocker arm 16 rises, the bucket 20 is raised accordingly; when the main rocker arm 16 falls, the bucket 20 is lowered to the predetermined position.

[0032] The top of the adjusting rod 18 is connected with the mounting base 1 through a hydraulic rod, and the bottom is connected with the bucket 20 through a connecting rod 19. During the operation of the loader, the adjusting rod 18 can rotate around the connecting block 17 by cooperating with the hydraulic rod, and when the hydraulic rod pushes the adjusting rod 18 to rotate, the bottom of the adjusting rod 18 acts on the bucket 20 through the connecting rod 19, thereby driving the bucket to rotate with the end of the main rocker arm 16 as the center.

[0033] When the loader needs to unload the material to a higher position, the main rocker arm 16 can first lift the bucket 20, and then adjust the inclination angle of the bucket through the adjusting rod 18, so that the material is smoothly poured to the designated position. When loading the material, the bucket can be adjusted to be horizontal or slightly inclined, so as to load more material.

[0034] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "connected" and "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A rocker arm structure for a loader, comprising a mounting base (1), the mounting base (1) being mounted on the loader, and the mounting base (1) having an installation chamber (2) inside, and an anti-fall structure being installed inside the installation chamber (2); Its features are: The fall protection structure includes a fixed rod (3) installed inside the installation chamber (2), and a flywheel (4) is rotatably connected between the two fixed rods (3). A rotating shaft (5) is fixedly connected through both sides of the flywheel (4), and a first fixed plate (6) and a second fixed plate (10) are respectively installed on both sides of the flywheel (4). The inner side of the first fixed plate (6) is provided with a ring-shaped and equidistantly distributed locking block (7), and the inner end of the rotating shaft (5) is rotatably connected with two positioning buckles (8) that are distributed in a rotational symmetry.

2. The rocker arm structure for a loader according to claim 1, characterized in that: The rotating shaft (5) is installed in the middle of the card block (7), and the rotating shaft (5) passes through the card block (7) and is installed inside the fixing rod (3). The positioning buckle (8) is fixedly connected to a spring (9) on the side near the middle of the first fixing plate (6), and the spring (9) and the rotating shaft (5) are connected to each other.

3. The rocker arm structure for a loader according to claim 1, characterized in that: A spring coil (11) is installed on the outer side of the end of the rotating shaft (5) away from the spring (9), and the spring coil (11) is fixedly connected to the inner side of the second fixed plate (10). The rotating shaft (5) passes through the second fixed plate (10) and is installed inside the fixed rod (3).

4. The rocker arm structure for a loader according to claim 1, characterized in that: The flywheel (4) is wrapped with a cable (12) on the outside, and the cable (12) extends upward inside the mounting base (1), and two symmetrically distributed lifting rods (13) are fixedly connected to the top of the mounting base (1).

5. A rocker arm structure for a loader according to claim 4, characterized in that: The lifting rod (13) has two positioning wheels (14) installed inside, and the upper end of the lifting rod (13) is inclined towards the front of the mounting base (1). The cable (12) is installed on the outside of the lifting rod (13), and the end of the cable (12) away from the flywheel (4) is fixedly connected to the pull rod (15).

6. A rocker arm structure for a loader according to claim 1, characterized in that: The mounting base (1) has a main rocker arm (16) rotatably connected to both ends of the top, and a hydraulic rod is installed between the middle of the main rocker arm (16) and the mounting base (1). The inner sides of the two main rocker arms (16) are fixedly connected to a connecting block (17), and the inner side of the connecting block (17) and the two ends of the pull rod (15) are rotatably connected to each other.

7. A rocker arm structure for a loader according to claim 6, characterized in that: An adjusting rod (18) is rotatably connected inside the main rocker arm (16), and a hydraulic rod is installed between the top of the adjusting rod (18) and the mounting base (1). A bucket (20) is installed at the end of the main rocker arm (16) away from the mounting base (1), and a connecting rod (19) is rotatably connected to the lower end of the adjusting rod (18), and the connecting rod (19) and the bucket (20) are rotatably connected to each other.

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