Rock crushing and excavating mechanism with strong directional vibration exciter

Abstract

The utility model relates to the field of excavating mechanisms, and discloses a rock crushing and excavating mechanism with a strong directional vibration exciter, which comprises a big arm, a bucket rod is hinged to the left side of the big arm, a hook is hinged to the lower part of the bucket rod, an oil cylinder I is hinged to the upper surface of the big arm, the left end of a piston rod of the oil cylinder I is hinged to the right end of the bucket rod, and the right end of the piston rod of the oil cylinder I is hinged to the right end of the bucket rod. A second oil cylinder is hinged to the left end of the bucket rod, the lower end of a cylinder barrel of the second oil cylinder is elastically connected with a hook through a buffering assembly, a vibration excitation assembly is arranged on the inner wall of the hook and comprises a bearing seat, a rotating bearing is installed on the upper surface of the bearing seat, and a transmission shaft is fixedly connected to the inner ring of the rotating bearing. According to the rock crushing and excavating mechanism, the excitation assembly is arranged, when crushing is carried out, the transmission shaft can be driven by the hydraulic motor to drive the eccentric block to rotate to generate excitation force, when the excitation force points to the sharp end of the hook, generated impact force can be superposed with thrust of the oil cylinder to act on rock, and excavating force and tunneling force of the rock crushing and excavating mechanism are improved.

Description

Technical Field

[0001] This utility model relates to the field of excavation mechanisms, and in particular to a rock breaking and excavation mechanism with a powerful directional vibrator. Background Technology

[0002] Various large and super-large excavators are often used to excavate earth and rock with an ultimate crushing strength of 20 MPa to about 80 MPa, such as rock breakers, shale crushers, high-frequency vibratory breakers, etc. However, due to current technological limitations, the digging force is only provided by the hydraulic cylinder and the gravity of the working device itself, which greatly reduces its efficiency for some earth and rock with high hardness.

[0003] In existing technologies, enterprises have long used three main types of equipment: one is a single-tooth breaking hook modified from a bucket, which can replace the bucket and has a structure with connecting rods and rockers; another is a structure that eliminates the connecting rods and rockers, with the hook directly driven by the bucket cylinder; and the last is a structure that eliminates the bucket cylinder, with the boom and hook integrated into a single hook arm. These structures have the following problems when in use, including: the hook is too light, the single hook arm is too cumbersome, and the digging range is limited, basically failing to meet the needs of actual excavation. Therefore, a rock breaking and excavation mechanism with a powerful directional vibrator is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a rock breaking and excavation mechanism with a powerful directional vibrator, which aims to improve the problem that "existing rock breaking and excavation mechanisms cannot effectively break up soil and rock with high hardness and have poor applicability" in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a rock crushing and excavation mechanism with a powerful directional vibrator, comprising a boom, a stick hinged to the left side of the boom, a hook hinged to the lower part of the stick, a hydraulic cylinder one hinged to the upper surface of the boom, the left end of the piston rod of the hydraulic cylinder one hinged to the right end of the stick, a hydraulic cylinder two hinged to the left end of the stick, the lower end of the cylinder of the hydraulic cylinder two being elastically connected to the hook via a buffer assembly, a vibration assembly provided on the inner wall of the hook, the vibration assembly including a bearing seat, a rotary bearing mounted on the upper surface of the bearing seat, a drive shaft fixedly connected to the inner ring of the rotary bearing, a gear rotatably connected to the rear end of the drive shaft, eccentric blocks fixedly connected to both the front and rear ends of the drive shaft, a hydraulic motor mounted on the front surface of the hook, and the output shaft of the hydraulic motor being drivenly connected to the front surface of the drive shaft via a coupling.

[0006] As a further description of the above technical solution:

[0007] The buffer assembly includes a spring seat, the upper surface of which is fixedly connected to the lower surface of the second cylinder of the hydraulic cylinder. A guide shaft is inserted into the inner wall of the spring seat, and a locking nut is installed on the outer wall of the guide shaft.

[0008] As a further description of the above technical solution:

[0009] A buffer spring is fixedly connected to the lower surface of the spring seat, and a connector is fixedly connected to the outer wall of the guide shaft. The lower end of the buffer spring is fixedly connected to the upper surface of the connector, and the lower surface of the connector is hinged to the upper surface of the hook.

[0010] As a further description of the above technical solution:

[0011] The drive shaft, rotary bearing, gear, and eccentric block are arranged in multiple sets, and the multiple sets of drive shaft, rotary bearing, gear, and eccentric block are symmetrically arranged with the center line of the bearing seat as the axis of symmetry.

[0012] As a further description of the above technical solution:

[0013] The two sets of gears mesh with each other.

[0014] As a further description of the above technical solution:

[0015] The protruding part of the eccentric block is set as a semi-circle.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, by setting up an excitation component, when crushing, the hydraulic motor can drive the transmission shaft to rotate the eccentric block to generate excitation force. When the excitation force points to the tip of the hook, the resulting impact force can be superimposed on the thrust of the oil cylinder and act on the rock. In this way, the hook can be assisted in crushing the rock, effectively improving the digging force and tunneling force. The overall device has good applicability.

[0018] 2. In this utility model, by setting a buffer component, when the excitation force is away from the hook tip, it will squeeze the buffer spring to contract. When the excitation force is directed towards the hook tip again, the buffer spring will return to its original state. The thrust generated by the return of the buffer spring can be superimposed with the excitation force to further assist in crushing. The overall device has a high energy utilization rate. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0020] Figure 2 This is a three-dimensional cross-sectional view of the buffer component in this utility model;

[0021] Figure 3 This is a three-dimensional structural disassembly diagram of the excitation component in this utility model.

[0022] Legend:

[0023] 1. Boom; 2. Hydraulic Cylinder 1; 3. Stick; 4. Hydraulic Cylinder 2; 5. Buffer Assembly; 51. Spring Seat; 52. Guide Shaft; 53. Buffer Spring; 54. Connector; 6. Hook; 7. Vibration Excitation Assembly; 71. Hydraulic Motor; 72. Bearing Seat; 73. Drive Shaft; 74. Rotary Bearing; 75. Gear; 76. Eccentric Block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a rock breaking and excavation mechanism with a powerful directional vibrator, comprising a boom 1 for supporting the overall device, a stick 3 for connecting the boom 1 and a hook 6 hinged to the left side of the boom 1, a hook 6 hinged to the lower part of the stick 3, a hydraulic cylinder 2 for controlling the rotation of the stick 3 hinged to the upper surface of the boom 1, the left end of the piston rod of the hydraulic cylinder 2 hinged to the right end of the stick 3, and the left and right rotation of the stick 3 can be controlled by adjusting the hydraulic cylinder 2, a hydraulic cylinder 4 for driving the rotation of the hook 6 hinged to the left end of the stick 3, the lower end of the cylinder of the hydraulic cylinder 4 being elastically connected to the hook 6 through a buffer assembly 5, and a vibration assembly 7 for assisting the hook 6 in breaking rocks provided on the inner wall of the hook 6, the vibration assembly 7 including a bearing seat for supporting a rotary bearing 74. 72. A rotary bearing 74 is mounted on the upper surface of bearing housing 72 to support the rotation of drive shaft 73. The inner ring of rotary bearing 74 is fixedly connected to drive shaft 73 to support eccentric block 76. The rear end of drive shaft 73 is rotatably connected to gear 75 for transmitting motion. The front end of drive shaft 73 is fixedly connected to eccentric block 76 for providing excitation force. A hydraulic motor 71 is mounted on the front surface of hook 6 to drive drive shaft 73 to rotate. The output shaft of hydraulic motor 71 is connected to the front surface of drive shaft 73 through a coupling. By starting hydraulic motor 71, drive shaft 73 to rotate, which in turn drives eccentric block 76 to rotate. When eccentric block 76 rotates, it generates excitation force. When the excitation force is directed toward the tooth tip of hook 6, it assists hook 6 in crushing.

[0026] Reference Figure 1 - Figure 3The buffer assembly 5 includes a spring seat 51 for supporting the overall buffer assembly 5. The upper surface of the spring seat 51 is fixedly connected to the lower surface of the cylinder of the second cylinder 4. A guide shaft 52 for driving the hook 6 to rotate is inserted into the inner wall of the spring seat 51. A locking nut is installed on the outer wall of the guide shaft 52. By setting the locking nut, the guide shaft 52 can be prevented from detaching from the inside of the spring seat 51. A buffer spring 53 for absorbing reverse excitation force is fixedly connected to the lower surface of the spring seat 51. A connector 54 for supporting the buffer spring 53 is fixedly connected to the outer wall of the guide shaft 52. The lower end of the buffer spring 53 is fixedly connected to the upper surface of the connector 54. The lower surface of the connector 54 is hinged to the upper surface of the hook 6.

[0027] Reference Figure 1 - Figure 3 The drive shaft 73, rotary bearing 74, gear 75, and eccentric block 76 are arranged in multiple sets. The multiple sets of drive shaft 73, rotary bearing 74, gear 75, and eccentric block 76 are symmetrically arranged with the center line of bearing seat 72 as the axis of symmetry. The mirror arrangement of the two sets of eccentric blocks 76 can ensure that the direction of the excitation force on the hook 6 is symmetrical, thus preventing the hook 6 from swaying left and right under the action of the excitation force. The two sets of gears 75 mesh with each other. When one set of gears 75 rotates, it will drive the other set of gears 75 to rotate in the opposite direction. The protruding part of the eccentric block 76 is set as a semi-circle.

[0028] Working principle: When vibration is not required, hydraulic cylinders 2 and 4 can be directly controlled to rotate hook 6 for digging and crushing operations. When the output shaft of hydraulic cylinder 4 moves downward, it first pushes spring seat 51 downward, causing it to move downward. Spring seat 51 then compresses buffer spring 53, causing it to contract. This contraction then pushes guide shaft 52, connecting head 54, and hook 6 together for digging and crushing. When vibration is required, hydraulic motor 71 can be started to rotate transmission shaft 73. The rotation of transmission shaft 73 will drive gear 75 to rotate. Since the two sets of gears 75 mesh with each other, the other set of gears 75 will also rotate. The eccentric blocks 76 rotate synchronously, thus simultaneously driving the two sets of eccentric blocks 76 to rotate in opposite directions. The rotation of the eccentric blocks 76 generates an excitation force. When the excitation force is directed towards the tip of the hook 6 teeth, it increases the crushing ability of the hook 6. When the excitation force is directed in the opposite direction to the tip of the hook 6 teeth, it pushes the guide shaft 52 to move upward. The upward movement of the guide shaft 52 compresses the buffer spring 53, causing it to contract. When the direction of the excitation force is directed towards the tip of the hook 6 teeth again, the buffer spring 53 will extend downward to return to its original position. The thrust generated at the same time will be superimposed with the excitation force and act together on the tip of the hook 6 teeth, thus improving the energy utilization rate.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rock breaking and excavation mechanism with a high-power directional vibrator, comprising a boom (1), characterized in that: A boom (1) is hinged to the left side of a stick (3), and a hook (6) is hinged to the lower part of the stick (3). A hydraulic cylinder (2) is hinged to the upper surface of the boom (1). The left end of the piston rod of the hydraulic cylinder (2) is hinged to the right end of the stick (3). A hydraulic cylinder (4) is hinged to the left end of the stick (3). The lower end of the cylinder of the hydraulic cylinder (4) is elastically connected to the hook (6) through a buffer assembly (5). An excitation assembly (7) is provided on the inner wall of the hook (6). The excitation assembly (7) includes... The device includes a bearing housing (72), on the upper surface of which a rotary bearing (74) is mounted. The inner ring of the rotary bearing (74) is fixedly connected to a drive shaft (73). The rear end of the drive shaft (73) is rotatably connected to a gear (75). Both the front and rear ends of the drive shaft (73) are fixedly connected to eccentric blocks (76). The front surface of the hook (6) is equipped with a hydraulic motor (71). The output shaft of the hydraulic motor (71) is connected to the front surface of the drive shaft (73) via a coupling.

2. The rock breaking and excavation mechanism with a powerful directional vibrator according to claim 1, characterized in that: The buffer assembly (5) includes a spring seat (51), the upper surface of which is fixedly connected to the lower surface of the cylinder of the second cylinder (4), a guide shaft (52) is inserted into the inner wall of the spring seat (51), and a locking nut is installed on the outer wall of the guide shaft (52).

3. A rock breaking and excavation mechanism with a powerful directional vibrator according to claim 2, characterized in that: A buffer spring (53) is fixedly connected to the lower surface of the spring seat (51), and a connector (54) is fixedly connected to the outer wall of the guide shaft (52). The lower end of the buffer spring (53) is fixedly connected to the upper surface of the connector (54), and the lower surface of the connector (54) is hinged to the upper surface of the hook (6).

4. A rock breaking and excavation mechanism with a powerful directional vibrator according to claim 1, characterized in that: The drive shaft (73), rotary bearing (74), gear (75), and eccentric block (76) are provided in multiple sets, and the multiple sets of drive shaft (73), rotary bearing (74), gear (75), and eccentric block (76) are symmetrically arranged with the center line of bearing seat (72) as the axis of symmetry.

5. A rock breaking and excavation mechanism with a powerful directional vibrator according to claim 4, characterized in that: The two sets of gears (75) mesh with each other.

6. A rock breaking and excavation mechanism with a powerful directional vibrator according to claim 1, characterized in that: The protruding part of the eccentric block (76) is set as a semi-circle.

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