Rocker arm of loading machine

Abstract

The utility model discloses a loader rocker arm which comprises a rocker arm body, a balance weight body is connected to the side face of the rocker arm body in an inserted mode, an arch-shaped connecting block is fixedly connected to the upper surface of the rocker arm body, lantern rings are fixedly arranged on the arch-shaped connecting block in a sleeved mode, and a positioning insertion rod is rotationally arranged between the lantern rings in a sleeved mode. And a rotating supporting assembly is arranged on the outer surface of the positioning inserting rod in a matched mode and comprises an inner sliding base fixedly connected to the inner side face of the lantern ring, a sliding block is slidably connected to the side face of the inner sliding base, and a sliding matching assembly is arranged at the top of the sliding block in a matched mode. In the using process, the sliding block is in sliding connection with the inner sliding base and can be matched with the rotating track of the rocker arm body, the rocker arm body can be rotationally supported at any position, the defect that a rigid piece is suddenly clamped in a supporting mode is overcome, the positioning inserting rod and the lantern ring are rotationally arranged in a sleeved mode, the external supporting effect can be provided for the rocker arm body, and the service life of the rocker arm is prolonged. And normal engineering requirements are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of loaders, and specifically relates to a loader rocker arm. Background Art

[0002] A loader is an earthwork construction machine used in highway, railway wheel, and mining construction projects. It is mainly used for shoveling bulk materials such as soil, sand and gravel, or coal, and cooperating with other auxiliary structures to perform heavy load operations such as tunneling and lifting. When the loader is working, the rocker arm is a very important rotating structure.

[0003] In the prior art, a loader rocker arm with the publication number of 202323076429.2 includes two rocker arm bodies, which are connected to each other through a rotating shaft. A middle support is arranged between the two rocker arm bodies. A plurality of side plates are arranged on the rocker arm body, and a chamber is arranged inside the side plates. A top cover is arranged at the top of the rotating shaft, a gear is arranged on the rotating shaft, a limiting groove is arranged above the gear, a limiting column is arranged inside the limiting groove, a connecting rod is fixed on the limiting column, racks are arranged at both ends of the connecting rod, a lamp groove is arranged at the top of the side plate, and a light strip is arranged inside the lamp groove, so as to increase the lighting range of the rocker arm. The multiple light strips arranged on the rocker arm enable the rocker arm to still have a forward lighting function when lifted, preventing accidents with the loading truck.

[0004] However, there are still significant deficiencies in the prior art, such as:

[0005] 1. The rocker arm bodies are rotationally supported by the middle support. In actual engineering operations, the center of gravity of the rocker arm changes at all times. As a rigid part, the support achieves a stable support effect through rotational friction and moment balance. This method cannot meet the high-load engineering requirements of the rocker arm.

[0006] 2. This method uses the tooth engagement method of the rack and the gear to complete the mechanical locking of the rocker arm body. To a certain extent, it can meet the engineering requirements of the fixed position of the rocker arm. However, the rack is a rigid component formed integrally, and the direction of meshing lock is along the axis, which does not conform to the rotational movement trajectory of the rocker arm, and may cause the rocker arm to slip during rotation, affecting the normal use of the rocker arm. Content of the Utility Model

[0007] The purpose of the utility model is to provide a loader rocker arm to solve the problems raised in the above background art.

[0008] To achieve the above purpose, the utility model provides the following technical solutions:

[0009] A loader rocker arm, comprising a rocker arm main body, a counterweight body is inserted on the side of the rocker arm main body, an arched connecting block is fixedly connected to the upper surface of the rocker arm main body, a collar is fixedly sleeved on the arched connecting block, the number of collars is two, and a positioning insertion rod is rotatably sleeved between the two collars;

[0010] A rotating support assembly is arranged on the outer surface of the positioning insertion rod, the rotating support assembly includes an inner sliding seat fixedly connected to the inner side surface of the collar, a slider is slidably connected to the side surface of the inner sliding seat, and a sliding fit assembly is arranged on the top of the slider.

[0011] Preferably, an ear plate is inserted on the side of the rocker arm main body, the ear plate is fixedly connected to the side surface of the slider, and the number of sliders is two, and the two sliders are symmetrically arranged on the inner side surface of the collar.

[0012] Preferably, the sliding fit assembly includes a primary side column, the end surface of the primary side column is fixedly connected to the slider, a convex connecting ring is rotatably connected to the outer surface of the primary side column, a secondary side column is inserted into the end surface of the convex connecting ring, a docking ring is hinged to the outer wall of the secondary side column, a bent claw is fixedly connected to the side surface of the docking ring, and a limiting tooth group is arranged in cooperation with the bent claw.

[0013] Preferably, the limiting tooth group includes trapezoidal teeth and arc teeth, the trapezoidal teeth are symmetrically arranged on the inner side surface of the collar, the number of arc teeth is multiple, and the multiple arc teeth are annularly arranged inside the collar.

[0014] Preferably, the bent claw is movably clamped with the trapezoidal teeth and the arc teeth, and the inclination angle of the bent claw is complementary to the oblique angle of the trapezoidal teeth.

[0015] Preferably, the bent claw is a stainless steel tooth claw formed by integral molding, and the centers of the secondary side column and the primary side column are aligned.

[0016] Preferably, a frosted layer is coated on the upper surface of the arc teeth, and the material of the frosted layer is a corundum particle layer.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The sliding connection between the slider and the inner sliding seat can be adapted to the rotation trajectory of the rocker arm main body. The rocker arm main body can obtain rotational support at any position, overcoming the disadvantages of easy fracture and sudden jamming of the rigid support. The rotational sleeve of the positioning insertion rod and the collar can provide an external support effect for the rocker arm main body, prevent the rocker arm main body from falling off, and ensure normal engineering requirements;

[0019] 2. The trapezoidal teeth are symmetrically arranged on the inner side of the collar, so that when the bent claw moves to the lowest and highest points of the collar, it can obtain the balanced support of the trapezoidal teeth, solving the problems of throwing off and offset at the bottom and top of the bent claw, indirectly increasing the rotational support effect of the rocker arm body. The array arrangement of multiple arc-shaped teeth can increase the rotational use range of the rocker arm body;

[0020] 3. The frosted layer applied to the arc-shaped teeth can increase the locking efficiency with the bent claw by increasing the granularity. At the same time, the long-term locking also matches the high-load engineering requirements of the rocker arm body. The rotational support obtained by the rocker arm body is more durable and has a longer service life.

[0021] During the use of the present utility model, before the rocker arm body rotates continuously, the primary side column is fixedly installed on the side of the slider, the convex connection ring is rotatably sleeved on the primary side column, and the secondary side column is fixedly installed on the end face of the convex connection ring for stable support when the rocker arm body rotates. Then, the bent claw and the docking circular ring are fixedly installed, the arc-shaped teeth are symmetrically installed at the upper and lower positions of the collar, and the trapezoidal teeth are annularly arrayed on the outer side of the collar, improving the linear meshing of the rack and better matching the movement track of the rocker arm body, with a better rotational support effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present utility model;

[0023] Figure 2 is a top view structural schematic diagram of the rocker arm body of the present utility model;

[0024] Figure 3 is a three-dimensional structural schematic diagram of the rotational support assembly on the inner side of the collar of the present utility model;

[0025] Figure 4 is a three-dimensional structural schematic diagram of the related parts of the sliding fit assembly to achieve the rotational limiting effect of the present utility model;

[0026] Figure 5 For the present utility model Figure 4 is an enlarged structural schematic diagram of part A.

[0027] In the figure: 1. Rocker arm body; 2. Counterweight; 3. Arch-shaped connecting block; 4. Collar; 5. Positioning plug; 6. Rotational support assembly; 61. Inner sliding seat; 62. Ear connecting plate; 63. Slider; 7. Sliding fit assembly; 71. Primary side column; 72. Convex connection ring; 73. Secondary side column; 74. Docking circular ring; 75. Bent claw; 8. Limiting tooth group; 81. Trapezoidal tooth; 82. Arc-shaped tooth; 9. Frosted layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0029] Please refer to Figures 1-5 , the present invention provides a technical solution:

[0030] Embodiment 1:

[0031] A loader rocker arm includes a rocker arm main body 1, a counterweight 2 is inserted into the side surface of the rocker arm main body 1, an arched connecting block 3 is fixedly connected to the upper surface of the rocker arm main body 1, a collar 4 is fixedly sleeved on the arched connecting block 3, the number of collars 4 is two, and a positioning insertion rod 5 is rotatably sleeved between the two collars 4;

[0032] A rotating support assembly 6 is arranged on the outer surface of the positioning insertion rod 5. The rotating support assembly 6 includes an inner sliding seat 61 fixedly connected to the inner side surface of the collar 4. A slider 63 is slidably connected to the side surface of the inner sliding seat 61, and a sliding fit assembly 7 is arranged on the top of the slider 63.

[0033] The insertion of the rocker arm main body 1 and the counterweight 2 increases the self-weight of the rocker arm main body 1, and improves the stability during rotation by means of physical weight increase. Further, the fixed connection between the arched connecting block 3 and the rocker arm main body 1, and the arched shape can ensure that the middle part of the rocker arm main body 1 will not be squeezed and broken during rotation, enabling the rocker arm main body 1 to be used for a long time. The sliding connection between the slider 63 and the inner sliding seat 61 can be adapted to the rotation trajectory of the rocker arm main body 1, and the rocker arm main body 1 can obtain rotational support at any position, overcoming the disadvantages of easy fracture and sudden jamming of rigid support. The rotational sleeve of the positioning insertion rod 5 and the collar 4 can provide an external support effect for the rocker arm main body 1, prevent the rocker arm main body 1 from falling off, and ensure normal engineering requirements.

[0034] Embodiment 2:

[0035] On the basis of Embodiment 1, this embodiment describes the sliding fit assembly in Embodiment 1. The sliding fit assembly 7 includes a primary side column 71. The end face of the primary side column 71 is fixedly connected to the slider 63. A convex connecting ring 72 is rotatably connected to the outer surface of the primary side column 71. A secondary side column 73 is inserted into the end face of the convex connecting ring 72. A docking ring 74 is hinged to the outer wall of the secondary side column 73. A bent claw 75 is fixedly connected to the side surface of the docking ring 74, and a limiting tooth group 8 is arranged in cooperation with the bent claw 75.

[0036] The fixed connection between the primary side column 71 and the slider 63 enables the bending claw 75 to achieve the effect of sliding limit. The insertion of the convex connection ring 72 into the secondary side column 73 can provide a support platform for the hinged movement of the docking ring 74. The cooperative setting of the bending claw 75 and the limit tooth group 8 can, on the one hand, achieve stable locking through the static friction between the teeth and the wedge-shaped claw, and on the other hand, the hinged movement of the docking ring 74 helps the bending claw 75 to perform circular motion, improving the flexibility of the bending claw 75 and meeting the usage requirements of different positions of the rocker arm main body 1.

[0037] The limit tooth group 8 includes trapezoidal teeth 81 and arc teeth 82. The trapezoidal teeth 81 are symmetrically arranged on the inner side surface of the collar 4, and there are multiple arc teeth 82, which are annularly arrayed on the inner side of the collar 4.

[0038] The trapezoidal teeth 81 are symmetrically arranged on the inner side surface of the collar 4, so that when the bending claw 75 moves to the lowest and highest points of the collar 4, it can obtain the balanced support of the trapezoidal teeth 81, solving the problems of dropping and offset of the bottom and top of the bending claw 75, indirectly increasing the rotational support effect of the rocker arm main body 1. The array setting of multiple arc teeth 82 can increase the rotational use range of the rocker arm main body 1.

[0039] The bending claw 75 is movably clamped with both the trapezoidal teeth 81 and the arc teeth 82, and the inclination angle of the bending claw 75 is complementary to the oblique angle of the trapezoidal teeth 81.

[0040] The setting that the bending claw 75 and the trapezoidal teeth 81 are complementary in angle enables the bending claw 75 to be stably locked with the trapezoidal teeth 81, and can be used in the usage occasions where the rocker arm main body 1 is in a fixed position.

[0041] Embodiment Three:

[0042] On the basis of Embodiment One, this embodiment describes the clamping process between the arc teeth 82 and the bending claw 75 in Embodiment One. The bending claw 75 is a stainless steel tooth claw made by integral molding, and the centers of the secondary side column 73 and the primary side column 71 are aligned.

[0043] The stainless steel material setting of the bending claw 75 makes the bending claw 75 strong and durable, effectively enhancing the clamping and locking effect between the bending claw 75 and the trapezoidal teeth 81 and the arc teeth 82, making the use of the rocker arm main body 1 more flexible and having a longer service life.

[0044] The upper surface of the arc teeth 82 is coated with an abrasive layer 9, and the material of the abrasive layer 9 is a corundum particle layer.

[0045] The abrasive layer 9 coated on the arc teeth 82 can improve the locking efficiency with the bending claw 75 by increasing the granularity. At the same time, the long-term locking also matches the high-load engineering requirements of the rocker arm main body 1, and the rotational support obtained by the rocker arm main body 1 is more lasting and has a longer life.

[0046] Working principle: During the use of this device, first, the counterweight 2 is inserted and fixed on the side of the rocker arm main body 1. Then, the collar 4 is fixedly sleeved on the outer wall surface of the positioning plug rod 5, and then penetrates through the surface of the arched connecting block 3. After that, the arched connecting block 3 is inserted and installed with the rocker arm main body 1;

[0047] After that, an inner sliding seat 61 is fixedly installed on the inner side surface of the collar 4. The ear plate 62 is inserted and fixed with the rocker arm main body 1, and the slider 63 is fixedly installed with the ear plate 62. When the rocker arm main body 1 rotates, the sliding track fits and matches the rotation track of the rocker arm main body 1;

[0048] Before the rocker arm main body 1 continuously rotates, the primary side column 71 is fixedly installed on the side of the slider 63. The convex ring 72 is rotatably sleeved on the primary side column 71, and the secondary side column 73 is fixedly installed on the end face of the convex ring 72 for stable support when the rocker arm main body 1 rotates. Immediately afterwards, the bent claw 75 is fixedly installed with the docking ring 74. The arc-shaped teeth 82 are symmetrically installed at the upper and lower positions of the collar 4, and the trapezoidal teeth 81 are annularly arrayed on the outer side surface of the collar 4, which can help the relative stability of the rocker arm main body 1 during rotation.

[0049] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A loader rocker arm, comprising a rocker arm body (1), a counterweight body (2) being inserted into the side of the rocker arm body (1), characterized in that: An arched connection block (3) is fixedly connected to the upper surface of the rocker arm body (1); a collar (4) is fixedly sleeved on the arched connection block (3); the collar (4) is provided in two pieces; a positioning rod (5) is rotatably sleeved between the two collars (4); The outer surface of the positioning rod (5) is provided with a rotating support assembly (6), and the rotating support assembly (6) includes an inner sliding seat (61) fixedly connected to the inner side surface of the ring (4), and the side surface of the inner sliding seat (61) is slidably connected to a slider (63), and the top of the slider (63) is provided with a sliding matching assembly (7).

2. A loader rocker arm according to claim 1, characterized in that: An ear plate (62) is inserted into the side of the rocker arm body (1), and the ear plate (62) is fixedly connected to the side of the slider (63). There are two sliders (63), and the two sliders (63) are symmetrically arranged on the inner side of the collar (4).

3. A loader rocker arm according to claim 1, characterized in that: The sliding fitting assembly (7) comprises a primary side column (71), the end face of the primary side column (71) is fixedly connected to the slider (63), the outer surface of the primary side column (71) is rotatably connected to a convex ring (72), the end face of the convex ring (72) is plugged with a secondary side column (73), the outer wall of the secondary side column (73) is hinged with a docking ring (74), the side of the docking ring (74) is fixedly connected with a bent claw (75), and the bent claw (75) is provided with a limited position tooth group (8) in cooperation.

4. A loader rocker arm according to claim 3, characterized in that: The limiting tooth group (8) comprises a trapezoidal tooth (81) and an arcuate tooth (82); the trapezoidal tooth (81) is symmetrically arranged on the inner side of the collar (4); a plurality of the arcuate teeth (82) are arranged in a circular array on the inner side of the collar (4).

5. A loader rocker arm according to claim 4, characterized in that: The bent claw (75) is movably engaged with the trapezoidal teeth (81) and the arc-shaped teeth (82), and the inclination angle of the bent claw (75) and the bevel angle of the trapezoidal teeth (81) are complementary to each other.

6. The loader rocker arm according to claim 3, characterized in that: The bent claw (75) is a stainless steel tooth claw made in one piece, and the center of the secondary side column (73) is aligned with the center of the primary side column (71).

7. The loader rocker arm according to claim 4, characterized in that: The upper surface of the arc-shaped teeth (82) is coated with a frosted layer (9), and the material of the frosted layer (9) is a corundum particle layer.

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