Bucket rocker arm mechanism of excavator

Abstract

The bucket rocker arm mechanism comprises a track plate and a walking frame, the walking frame is installed on the outer wall of the track plate in a sliding mode, front reversing blocks are symmetrically installed on the outer wall of the walking frame, a reversing frame is arranged outside the portion, on one side of the front reversing blocks, of the walking frame, and the front reversing blocks are symmetrically installed on the outer wall of the walking frame. And rear reversing blocks are symmetrically installed on the side, close to the front reversing block, of the reversing frame, reversing shafts are arranged in the rear reversing blocks, the rear reversing blocks are movably connected with the front reversing block through the reversing shafts, and an upper clamping sleeve is installed on the outer wall of the portion, above the track plate, of the walking frame. According to the utility model, the stable hydraulic drive transverse movement adjustment of the bucket rocker arm mechanism is realized, the hydraulic drive left-right rotation adjustment is facilitated, the movement times of the excavator body are reduced, the movement stroke of the bucket is increased, the excavation speed is accelerated, and the movement operation range of the bucket rocker arm mechanism is increased; and the control and adjustment flexibility of the bucket rocker arm mechanism is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a bucket swing arm mechanism technical field, concretely is a bucket swing arm mechanism of excavator. BACKGROUND

[0002] The excavator swing arm is composed of a swing arm body and a swing arm cylinder, the swing arm body is a right-angle arm frame composed of an upper arm and a lower arm, the upper arm and the lower arm are connected through a hinge and can move up and down, the swing arm cylinder is a hydraulic cylinder connected between the swing arm body and a bucket rod and used for controlling the up-and-down movement of the swing arm, the excavator swing arm is a very important component in the whole excavator system, which directly affects the working efficiency and operation accuracy of the excavator, and if the swing arm structure is unreasonable or the swing arm cylinder hydraulic system fails, the working efficiency of the excavator will be low or the excavator cannot work normally.

[0003] As disclosed in the authorized announcement No. CN208899552U, a bucket swing arm mechanism of excavator, the bucket end ear ring is hinged with the lower end shaft hole of the bucket rod, the bucket middle ear ring is hinged with the lower end shaft hole of the bucket push rod, a bucket oil cylinder is arranged and used for driving the bucket to overturn, characterized in that: a swing arm swing rod is arranged, three working shaft holes are arranged on the swing arm swing rod, the three working shaft holes are arranged in a triangular shape, the third working shaft hole of the swing arm swing rod is hinged with the lower shaft hole of the bucket rod, the first working shaft hole of the swing arm swing rod is hinged with the upper end shaft hole of the bucket push rod, and the piston rod ear ring of the bucket oil cylinder is hinged with the second working shaft hole of the swing arm swing rod.

[0004] Although the bucket oil cylinder pushes the bucket rod through the swing arm swing rod to make the bucket overturn, due to the unique three-hole swing arm swing rod structure, the excavator can effectively shorten the stroke of the bucket oil cylinder, increase the digging force and improve the digging speed.

[0005] However, the existing bucket swing arm mechanism cannot be stably driven by hydraulic pressure to move horizontally, cannot be conveniently driven by hydraulic pressure to rotate left and right, affects the moving frequency of the excavator body, affects the moving stroke of the bucket, greatly affects the digging speed, affects the moving operation range of the bucket swing arm mechanism, and affects the flexibility of the control and adjustment of the bucket swing arm mechanism. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a bucket swing arm mechanism of excavator to solve the problem that the bucket swing arm mechanism cannot be stably driven by hydraulic pressure to move horizontally, cannot be conveniently driven by hydraulic pressure to rotate left and right, affects the moving frequency of the excavator body, affects the moving stroke of the bucket, affects the digging speed, affects the moving operation range of the bucket swing arm mechanism, and affects the flexibility of the control and adjustment of the bucket swing arm mechanism.

[0007] In order to achieve the above object, the utility model provides the following technical scheme: a bucket rocker arm mechanism of excavator, including track plate and walking frame, the outer wall of track plate is installed with walking frame, the outer wall of walking frame is symmetrically installed with front reversing block, the outside of walking frame of one side of front reversing block is provided with reversing frame, the side close to front reversing block of reversing frame is symmetrically installed with rear reversing block, the inside of rear reversing block is provided with reversing shaft, and rear reversing block is movably connected with front reversing block through reversing shaft, the outer wall of walking frame above track plate is installed with upper clamping sleeve, and upper clamping sleeve is movably connected with track plate, the outer wall of walking frame below track plate is installed with lower clamping sleeve, and lower clamping sleeve is movably connected with track plate, the outer wall of upper clamping sleeve is installed with hydraulic motor, the output end of hydraulic motor is installed with gear, the outer wall of track plate below gear is installed with rack.

[0008] Preferably, the outer wall of the walking frame above the front reversing block is installed with a positioning plate, two groups of first hydraulic cylinders are provided between the positioning plate and the front reversing block, and the surface of the first hydraulic cylinders is sleeved with a movable sleeve.

[0009] Preferably, the side close to the positioning plate and the front reversing block of the movable sleeve is installed with a movable shaft, the movable sleeve is movably connected with the positioning plate through the movable shaft, and the movable sleeve is movably connected with the front reversing block through the movable shaft.

[0010] Preferably, the output end of the first hydraulic cylinder is installed with a push rod, the end away from the first hydraulic cylinder of the push rod is installed with a supporting sleeve, the inside of the supporting sleeve is movably provided with a connecting shaft, and the connecting shaft is fixedly connected with the reversing frame.

[0011] Preferably, the outside of the reversing frame is provided with a large arm, the bottom end of the large arm is installed with a first shaft, the large arm is movably connected with the reversing frame through the first shaft, and the top end of the large arm is installed with a small arm.

[0012] Preferably, the end close to the large arm of the small arm is installed with a second shaft, and the small arm is movably connected with the large arm through the second shaft.

[0013] Preferably, the inside of the large arm on one side of the reversing frame is movably installed with a second hydraulic cylinder, and the output end of the second hydraulic cylinder is connected with the reversing frame.

[0014] Preferably, the top end of the large arm on one side of the small arm is movably installed with a third hydraulic cylinder, the output end of the third hydraulic cylinder is movably connected with the small arm, and the outer wall of the track plate is symmetrically installed with a positioning seat.

[0015] Compared with the prior art, the shovel rocker mechanism not only realizes stable hydraulic driving transverse movement adjustment of the shovel rocker mechanism, facilitates hydraulic driving left and right rotation adjustment, but also reduces the movement frequency of the excavator body, increases the movement stroke of the shovel, speeds up the excavation speed, increases the movement operation range of the shovel rocker mechanism, and improves the flexibility of the shovel rocker mechanism control adjustment.

[0016] (1) The gear is driven to rotate by the hydraulic motor, moves under the meshing of the gear and the rack, and drives the upper sleeve, the walking frame, the lower sleeve, the front reversing block, the reversing frame, the large arm and the small arm to move, so that transverse movement control adjustment is facilitated. BRIEF DESCRIPTION OF DRAWINGS

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

[0018] Figure 2 It is a three-dimensional structure schematic view of the walking frame of the utility model;

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

[0020] Figure 4 It is a three-dimensional structure schematic view of the rack of the utility model;

[0021] Figure 5 It is a three-dimensional structure schematic view of the reversing frame of the utility model.

[0022] In the figure: 1, track plate; 2, lower sleeve; 3, positioning seat; 4, rack; 5, upper sleeve; 6, hydraulic motor; 7, gear; 8, walking frame; 9, first hydraulic cylinder; 10, movable sleeve; 11, positioning plate; 12, movable shaft; 13, connecting shaft; 14, front reversing block; 15, push rod; 16, support sleeve; 17, reversing frame; 18, rear reversing block; 19, reversing shaft; 20, first shaft; 21, large arm; 22, second hydraulic cylinder; 23, third hydraulic cylinder; 24, second shaft; 25, small arm. DETAILED DESCRIPTION

[0023] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model will be described in detail as follows in combination with the drawings and preferred embodiments.

[0024] Please refer to Figures 1-5 The utility model provides an embodiment: a shovel rocker arm mechanism of excavator, including track plate 1 and walking frame 8, the outer wall of track plate 1 is slidably installed with walking frame 8, the outer wall of walking frame 8 is symmetrically installed with front reversing block 14, and the outside of walking frame 8 on the side of front reversing block 14 is provided with reversing frame 17, and reversing frame 17 is symmetrically installed with rear reversing block 18 on the side close to front reversing block 14, and reversing shaft 19 is arranged in the inside of rear reversing block 18, and rear reversing block 18 is movably connected with front reversing block 14 through reversing shaft 19, the outer wall of walking frame 8 above track plate 1 is installed with upper sleeve 5, and upper sleeve 5 is slidably connected with track plate 1, the outer wall of walking frame 8 below track plate 1 is installed with lower sleeve 2, and lower sleeve 2 is slidably connected with track plate 1, the outer wall of upper sleeve 5 is installed with hydraulic motor 6, the output end of hydraulic motor 6 is installed with gear 7, the outer wall of track plate 1 below gear 7 is installed with rack 4, and gear 7 and rack 4 are meshed with each other;

[0025] The outer wall of walking frame 8 above front reversing block 14 is installed with positioning plate 11, and two groups of first hydraulic cylinders 9 are arranged between positioning plate 11 and front reversing block 14, and movable sleeve 10 is arranged on the surface of first hydraulic cylinder 9.

[0026] Movable shaft 12 is arranged on the side close to positioning plate 11 and front reversing block 14 of movable sleeve 10, and movable sleeve 10 is movably connected with positioning plate 11 and front reversing block 14 through movable shaft 12.

[0027] Push rod 15 is installed at the output end of first hydraulic cylinder 9, support sleeve 16 is installed at the end away from first hydraulic cylinder 9 of push rod 15, connecting shaft 13 is movably arranged in the inside of support sleeve 16, and connecting shaft 13 is fixedly connected with reversing frame 17.

[0028] By opening the hydraulic motor 6, under the support of the track plate 1, the hydraulic motor 6 drives the gear 7 to rotate, drives the gear 7 to move under the meshing of the gear 7 and the rack 4, the gear 7 drives the upper sleeve 5, the walking frame 8, the lower sleeve 2, the front reversing block 14, the reversing frame 17, the large arm 21, the small arm 25 to move, to facilitate the transverse movement control adjustment, the upper sleeve 5 and the lower sleeve 2 slide on the surface of the track plate 1 to limit the support, open two groups of first hydraulic cylinders 9, one group of first hydraulic cylinders 9 drives the push rod 15 to extend, the other group of first hydraulic cylinders 9 drives the push rod 15 to retract, the push rod 15 drives the support sleeve 16 to move, the support sleeve 16 drives the reversing frame 17 to rotate through the connecting shaft 13, the reversing frame 17 drives the rear reversing block 18 to rotate around the reversing shaft 19, the front reversing block 14 supports the reversing shaft 19, the reversing frame 17 drives the large arm 21 and the small arm 25 to rotate left and right, to facilitate the rotation adjustment, the movable sleeve 10 supports the first hydraulic cylinder 9, the positioning plate 11 and the front reversing block 14 movably support the movable sleeve 10 through the movable shaft 12, realizing stable hydraulic drive transverse movement adjustment of the bucket rocker arm mechanism, facilitating hydraulic drive left and right rotation adjustment, increasing the movement operation range of the bucket rocker arm mechanism, reducing the movement frequency of the excavator body, increasing the movement stroke of the bucket, speeding up the excavation, and improving the flexibility of the bucket rocker arm mechanism control adjustment;

[0029] The reversing frame 17 is provided with the large arm 21, the bottom end of the large arm 21 is provided with the first shaft 20, and the large arm 21 is movably connected with the reversing frame 17 through the first shaft 20, and the top end of the large arm 21 is provided with the small arm 25;

[0030] The end of the small arm 25 close to the large arm 21 is provided with the second shaft 24, and the small arm 25 is movably connected with the large arm 21 through the second shaft 24;

[0031] The inside of the large arm 21 on one side of the reversing frame 17 is movably provided with the second hydraulic cylinder 22, and the output end of the second hydraulic cylinder 22 is connected with the reversing frame 17;

[0032] The top end of the large arm 21 on one side of the small arm 25 is movably provided with the third hydraulic cylinder 23, and the output end of the third hydraulic cylinder 23 is movably connected with the small arm 25, and the outer wall of the track plate 1 is symmetrically provided with the positioning seat 3;

[0033] By connecting the small arm 25 with the bucket, the second hydraulic cylinder 22 drives the large arm 21 to rotate around the first shaft 20, and the third hydraulic cylinder 23 drives the small arm 25 to rotate around the second shaft 24, to facilitate driving the bucket to move, and the positioning seat 3 facilitates the connection of the track plate 1 with the body.

[0034] The embodiment of the application is used as follows: when the external power supply is connected, first, the hydraulic motor 6 is opened, the hydraulic motor 6 drives the gear 7 to rotate, the gear 7 is driven to move under the meshing of the gear 7 and the rack 4, the gear 7 drives the upper sleeve 5, the walking frame 8, the lower sleeve 2, the front reversing block 14, the reversing frame 17, the large arm 21 and the small arm 25 to move, so as to facilitate the transverse movement control and adjustment, the upper sleeve 5 and the lower sleeve 2 slide on the surface of the track plate 1 to be limited and supported, two groups of the first hydraulic cylinders 9 are opened, one group of the first hydraulic cylinders 9 drives the push rod 15 to extend, the other group of the first hydraulic cylinders 9 drives the push rod 15 to retract, the push rod 15 drives the support sleeve 16 to move, the support sleeve 16 drives the reversing frame 17 to rotate through the connecting shaft 13, the reversing frame 17 drives the rear reversing block 18 to rotate around the reversing shaft 19, the front reversing block 14 supports the reversing shaft 19, the reversing frame 17 drives the large arm 21 and the small arm 25 to rotate left and right, so as to facilitate the rotation adjustment, the movable sleeve 10 supports the first hydraulic cylinder 9, the positioning plate 11 and the front reversing block 14 movably support the movable sleeve 10 through the movable shaft 12, then the small arm 25 is connected with the bucket, the second hydraulic cylinder 22 drives the large arm 21 to rotate around the first shaft 20, the third hydraulic cylinder 23 drives the small arm 25 to rotate around the second shaft 24, so as to facilitate the movement of the bucket, the positioning seat 3 facilitates the connection of the track plate 1 and the machine body, and the use of the bucket rocker mechanism is completed.

[0035] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the present application, and any indirect modification, equivalent change and modification of the above embodiment according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A bucket rocker arm mechanism for an excavator, characterized in that: The invention comprises a track plate (1) and a walking frame (8), wherein the walking frame (8) is slidably mounted on the outer wall of the track plate (1), a front reversing block (14) is symmetrically mounted on the outer wall of the walking frame (8), a reversing frame (17) is arranged outside the walking frame (8) on one side of the front reversing block (14), a rear reversing block (18) is symmetrically mounted on the side of the reversing frame (17) close to the front reversing block (14), a reversing shaft (19) is arranged inside the rear reversing block (18), and the rear reversing block (18) is connected to the front reversing block through the reversing shaft (19). The block (14) is movably connected, an upper clamping sleeve (5) is installed on the outer wall of the walking frame (8) above the track plate (1), and the upper clamping sleeve (5) is slidably connected to the track plate (1), a lower clamping sleeve (2) is installed on the outer wall of the walking frame (8) below the track plate (1), and the lower clamping sleeve (2) is slidably connected to the track plate (1), a hydraulic motor (6) is installed on the outer wall of the upper clamping sleeve (5), a gear (7) is installed at the output end of the hydraulic motor (6), and a rack (4) is installed on the outer wall of the track plate (1) below the gear (7).

2. The bucket rocker arm mechanism of an excavator according to claim 1, characterized in that: A positioning plate (11) is installed on the outer wall of the walking frame (8) above the front reversing block (14), and two groups of first hydraulic cylinders (9) are arranged between the positioning plate (11) and the front reversing block (14). The surfaces of the first hydraulic cylinders (9) are all covered with movable sleeves (10).

3. The bucket rocker arm mechanism of an excavator according to claim 2, characterized in that: A movable shaft (12) is installed on one side of the movable sleeve (10) close to the positioning plate (11) and the front reversing block (14), and the movable sleeve (10) is movably connected to the positioning plate (11) through the movable shaft (12), and the movable sleeve (10) is movably connected to the front reversing block (14) through the movable shaft (12).

4. The bucket rocker arm mechanism of an excavator according to claim 2, characterized in that: A push rod (15) is installed at the output end of the first hydraulic cylinder (9), and a support sleeve (16) is installed at the end of the push rod (15) away from the first hydraulic cylinder (9). A connecting shaft (13) is movably provided inside the support sleeve (16), and the connecting shaft (13) is fixedly connected to the reversing frame (17).

5. The bucket rocker arm mechanism of an excavator according to claim 1, characterized in that: A large arm (21) is provided on the outside of the reversing frame (17), a first shaft (20) is installed at the bottom end of the large arm (21), and the large arm (21) is movably connected to the reversing frame (17) through the first shaft (20), and a small arm (25) is installed at the top end of the large arm (21).

6. The bucket rocker arm mechanism of an excavator according to claim 5, characterized in that: A second shaft (24) is installed at one end of the small arm (25) close to the large arm (21), and the small arm (25) is movably connected to the large arm (21) through the second shaft (24).

7. The bucket rocker arm mechanism of an excavator according to claim 1, characterized in that: A second hydraulic cylinder (22) is movably installed inside the arm (21) on one side of the reversing frame (17), and the output end of the second hydraulic cylinder (22) is connected to the reversing frame (17).

8. The bucket rocker arm mechanism of an excavator according to claim 5, characterized in that: A third hydraulic cylinder (23) is movably mounted on the top of the large arm (21) on one side of the small arm (25), and an output end of the third hydraulic cylinder (23) is movably connected to the small arm (25). A positioning seat (3) is symmetrically mounted on the outer wall of the track plate (1).

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