Novel excavator double-arm structure

Abstract

The utility model discloses a novel double-arm structure of an excavator. The novel double-arm structure comprises a rotating arm and a grabbing arm connected to a base of the rotating arm. The rotating arm comprises a telescopic arm section and a rotating disc, and the rotating disc is rotatably arranged on a base of the excavator through a rotating driving device; the upper end face of the rotating disc is connected with a base, and the base transversely extends out of a mounting position of a grabbing arm. The rotating arm comprises a grabbing arm section and a grabbing hand, the grabbing hand comprises a first clamping jaw and a second clamping jaw which are connected to a pin shaft, the first clamping jaw is integrally connected with two semicircular parts which are arranged at intervals, the second clamping jaw is integrally connected with three semicircular parts which are arranged at intervals, and the pin shaft is installed at the tail end of the small arm. The first clamping jaw is fixedly installed on the pin shaft, and the second clamping jaw is hinged to the pin shaft. Through ingenious mechanical design and integration of a hydraulic system, the multifunctional and high-efficiency excavator double-arm structure is provided, the excavator double-arm structure can adapt to complex working environments, and the working efficiency and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a novel double-arm structure of an excavator. Background Art

[0002] Excavators, as a crucial piece of engineering machinery in current construction and earthwork operations, have long been a focus of engineering and technical personnel on improving their functionality and performance. Traditional excavators typically consist of a single digging arm, whose primary function is to excavate and move materials such as soil and rocks. While this type of excavator demonstrates high efficiency for simple excavation and handling tasks, the increasing complexity of construction projects has placed higher demands on excavator performance.

[0003] In actual operations, excavators are often required to perform increasingly diverse and complex tasks, such as precisely grasping materials in confined spaces, handling materials of specific shapes and sizes, and stacking and sorting materials under specific conditions. These tasks challenge the excavator's operational flexibility, precision, and versatility. Existing single-arm excavators, due to structural limitations, are often unable to effectively complete these complex tasks, thus impacting operational efficiency and increasing operating costs.

[0004] Therefore, in order to adapt to the diverse needs of modern engineering construction, improve the operating efficiency and flexibility of excavators, and reduce operating costs, the industry urgently needs to develop a new type of excavator double-arm structure. Utility Model Content

[0005] In order to solve the deficiencies existing in the above technologies, the utility model provides a novel excavator double-arm structure.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: a new excavator double-arm structure, including a rotating arm and a grab arm connected to the base of the rotating arm;

[0007] The rotating arm includes a telescopic arm section and a rotating disk, and the rotating disk is rotatably arranged on the base of the excavator through a rotating drive device;

[0008] The upper end surface of the rotating disk is connected to the base, and the base extends laterally to form a mounting position for the grab arm;

[0009] The rotating arm includes a grab arm section and a grab hand. The grab hand includes a first clamping jaw and a second clamping jaw connected to a pin shaft. The first clamping jaw is integrally connected to two semicircular parts, and the two semicircular parts are arranged at intervals. The second clamping jaw is integrally connected to three semicircular parts, and the three semicircular parts are arranged at intervals. The pin shaft is installed at the end of the forearm. The first clamping jaw is fixedly installed on the pin shaft, and the second clamping jaw is hinged to the pin shaft.

[0010] Furthermore, the telescopic arm section of the rotating arm consists of a rear arm, a middle arm and a forearm. The rear arm and the middle arm, as well as the middle arm and the forearm are hinged to each other, and the telescopic movement between the two adjacent arm sections is driven by hydraulic cylinder 2 between the middle arm and the forearm. The rear arm is hinged to the base, and the telescopic movement of the rear arm is driven by hydraulic cylinder 1. The front section of the forearm is hinged to the bucket, and the telescopic movement of the bucket is driven by hydraulic cylinder 3.

[0011] Furthermore, the grab arm section of the grab arm includes an upper arm and a lower arm, the upper arm and the lower arm are hinged to each other, the upper arm and the lower arm are driven by a hydraulic cylinder four, and the connecting part of the upper arm is connected to the interface of the base through bolts.

[0012] Furthermore, one end of the second jaw forms a hinge point connected to the hydraulic cylinder. The hydraulic cylinder and the hinge point with the second jaw are both located in a hollow channel formed on the forearm. The telescopic action of the hydraulic cylinder is transmitted to the second jaw through mechanical linkage. When the second jaw merges with the first jaw around the pin shaft, the semicircular parts of the first jaw and the second jaw intersect with each other.

[0013] This utility model discloses a novel excavator dual-arm structure. This structure should provide greater operational flexibility, enabling the excavator to better adapt to different operating environments and task requirements. It can accurately grasp materials in narrow spaces, move materials of specific shapes and sizes, and stack and sort materials under specific conditions. At the same time, it is also necessary to consider operational simplicity and safety to improve overall operational performance. It is precisely against this technical background that this utility model came into being, aiming to provide a novel excavator dual-arm structure that can meet the needs of modern engineering construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 for Figure 1 Enlarged schematic diagram of the structure of the part in the middle circle.

[0016] Figure 3 This is a structural diagram of the rotating disk of the utility model.

[0017] In the figure: 1. Rotating plate; 2. Base; 3. Rotating bearing; 4. Base; 5. Rear arm; 6. Middle arm; 7. Forearm; 8. Hydraulic cylinder 2; 9. Hydraulic cylinder 1; 10. Driving bucket; 11. Hydraulic cylinder 3; 13. Upper arm; 14. Lower arm; 15. Hydraulic cylinder 4; 16. Gripper; 17. Pin shaft; 18. First clamping jaw; 19. Second clamping jaw. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] Embodiment 1;

[0020] Figure 1 and Figure 3 The new excavator double-arm structure shown includes a rotating arm and a grabbing arm; the rotating arm is connected to the excavator base and has a rotating function and can rotate 360 ​​degrees on the excavator base; the grabbing arm is connected to the base of the rotating arm and has telescopic and grabbing functions;

[0021] The rotating arm includes a rotating disk 1, which is rotatably arranged on the base 2 of the excavator. Specifically, the rotating disk 1 is connected to the base 2 through a rotating bearing 3, and the rotating bearing 3 is matched and installed in the bracket on the base 2. It should be understood that the bracket is designed with a position for matching and installing the rotating bearing to ensure that the rotating disk 1 can rotate around a fixed central axis. The rotating disk 1 and the bearing 3 are fixed by fasteners such as bolts, nuts, etc., and are firmly fixed in the bracket on the base 2 by fasteners to ensure that the rotating disk 1 does not produce displacement during rotation. One or more rotating drive devices, such as a hydraulic motor or a torsion motor, are installed on the rotating disk 1. The hydraulic motor is connected to the rotating disk 1 through a shaft. The hydraulic motor can be installed on the chassis of the vehicle body carrying the rotating arm, and the shaft passes through the rotating bearing 3, so that the rotation of the motor can directly drive the rotating disk 1 to rotate. Of course, the rotating disk is not limited to the above-mentioned rotation method, and it can also be achieved by using the excavator slewing device in the prior art. The important thing is to achieve the in-situ rotation of the rotating disk 1.

[0022] The upper end surface of the rotating disk 1 is connected to the base 4. The rotating arm of the excavator includes a telescopic arm section, which is composed of at least two sections. In this embodiment, the telescopic arm section consists of a rear arm 5, a middle arm 6, and a front arm 7. The three sections are telescopic to adjust the length of the grab arm. The rear arm, middle arm, and forearm are all made of high-strength steel. The rear arm 5 and the middle arm 6, as well as the middle arm 6 and the forearm 7, are hinged to each other, and the telescopic movement between the two adjacent arm sections is driven by hydraulic cylinder 2 8 between the middle arm 6 and the forearm 7. The rear arm 5 is hinged to the base 4 and is driven to telescopically move by hydraulic cylinder 1 9. The front section of the forearm 7 is hinged to the bucket 10 and is driven to telescopically move by hydraulic cylinder 3 11. It should be noted that the above-mentioned hydraulic cylinder can be single-acting or double-acting, responsible for pushing and pulling the arm section or bucket. The hydraulic cylinder is connected to a drive system consisting of a hydraulic pump, a control valve, an oil cylinder, etc., which is used to control the movement of the rotating arm and the bucket. The above-mentioned control process is based on the control principle of the prior art.

[0023] The base 4 extends laterally to form a mounting position for the grab arm. The grab arm section of the grab arm includes an upper arm 13 and a lower arm 14. The upper arm 13 and the lower arm 14 are hinged to each other to allow them to rotate and extend relative to each other. The two are driven by a hydraulic cylinder 15, and the connecting part of the upper arm 14 is connected to the interface of the base 4 by bolts.

[0024] The grab arm also includes a grab 16. One end of the hydraulic cylinder 15 is fixed to the upper arm, and the other end is connected to the lower arm. The pressure difference provided by the hydraulic system drives the extension and contraction of the grab arm section. The grab 16 is connected to the end of the lower arm 7 and is connected to the main structure of the grab arm through a hydraulic linkage device. The grab 16 includes Figure 2 As shown, the first jaw 18 and the second jaw 19 are connected to the pin shaft 17. The first jaw 18 has two semicircular parts integrally connected to it, and the two semicircular parts are arranged at intervals. The second jaw 19 has three semicircular parts integrally connected to it, and the three semicircular parts are arranged at intervals. The pin shaft 17 is installed at the end of the arm 7. The first jaw 18 is fixedly mounted on the pin shaft 17. The second jaw 19 is hinged on the pin shaft 17. One end of the second jaw 19 forms a hinge point for connecting the hydraulic cylinder. The hydraulic cylinder and the hinge point with the second jaw 19 are both located in the hollow channel formed on the arm 7. The telescopic action of the hydraulic cylinder is transmitted to the second jaw 19 through mechanical linkage. When the second jaw 19 merges with the first jaw 18 around the pin shaft 17, the semicircular parts of the first jaw 18 and the second jaw 19 intersect with each other.

[0025] Embodiment 2;

[0026] On the basis of the first embodiment, two grab arms can be provided on the mounting position of the grab arm extending laterally from the base to cope with more complicated working conditions such as emergency rescue.

[0027] During operation, the rotating disc of the utility model is mounted on the excavator base and connected to the base via a rotating bearing, allowing the rotating disc to rotate about a fixed central axis. The rotating disc's design ensures no displacement during rotation, thus ensuring smooth and accurate rotation. The rotating arm consists of a rear arm, a middle arm, and a lower arm, which are hingedly connected and extended and retracted by a hydraulic cylinder. This design allows the length of the grab arm to be adjusted to suit different requirements. The grab arm comprises a main arm and a lower arm, which are hingedly connected to each other to allow relative rotation and extension. The gripper comprises a first jaw and a second jaw, which are hinged to the end of the lower arm via a pin. The first jaw has two semicircular portions, and the second jaw has three semicircular portions. One end of the second jaw forms a hinge point for connecting to a hydraulic cylinder located in a hollow channel in the lower arm. The extension and retraction of the hydraulic cylinder is transmitted to the second jaw through a mechanical linkage, causing it to rotate about the pin and merge with the first jaw. When the second jaw rotates about the pin and merges with the first jaw, the semicircular portions of the two jaws intersect, forming a complete circular structure, thereby achieving the function of grasping objects. The entire system works in a coordinated manner. The operator can manipulate these hydraulic cylinders through the control device to realize the rotation of the rotating arm, the extension and retraction of the telescopic arm section, and the opening and closing of the gripper, thereby completing various excavation and grabbing tasks.

[0028] In summary, the reason why the utility model can provide higher operational flexibility and enable the excavator to be more adaptable to different working environments and task requirements is mainly attributed to the following aspects:

[0029] Double-arm structure design:

[0030] The addition of a dual-arm structure (rotating arm and grappling arm) provides the excavator with more degrees of freedom and operating options. The rotating arm can rotate 360 ​​degrees, while the grappling arm can extend and grab, allowing the excavator to operate flexibly in multiple directions.

[0031] Independent control of the rotating arm and the gripping arm:

[0032] Since the rotating arm and the grab arm can be controlled independently, the operator can operate them individually or in conjunction with each other as needed. This independent control mechanism improves the excavator's adaptability to complex environments.

[0033] The utility model improves the overall operating performance of the excavator, not only improves the operating efficiency, but also ensures the safety and convenience during the operation, so that the excavator can better adapt to various different working environments and task requirements.

[0034] The above-mentioned implementation manner is not a limitation of the present invention, and the present invention is not limited to the above-mentioned examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the scope of the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A new excavator double-arm structure, characterized by: It includes a rotating arm and a gripping arm connected to a base of the rotating arm; The rotating arm comprises a telescopic arm section and a rotating disk (1), and the rotating disk (1) is rotatably arranged on a base (2) of the excavator via a rotating drive device; The upper end surface of the rotating disk (1) is connected to the base (4), and the base (4) extends laterally to form a mounting position for the gripping arm; The rotating arm comprises a gripping arm section and a gripping hand (16), the gripping hand (16) comprising a first clamping jaw (18) and a second clamping jaw (19) connected to a pin shaft (17), the first clamping jaw (18) being integrally connected to two semicircular portions, the two semicircular portions being spaced apart, the second clamping jaw (19) being integrally connected to three semicircular portions, the three semicircular portions being spaced apart, the pin shaft (17) being mounted at the end of the forearm (14), the first clamping jaw (18) being fixedly mounted on the pin shaft (17), and the second clamping jaw (19) being hinged to the pin shaft (17).

2. The novel excavator double-arm structure according to claim 1 is characterized in that: The telescopic arm section of the rotating arm is composed of a rear arm (5), a middle arm (6) and a front arm (7). The rear arm (5) and the middle arm (6), as well as the middle arm (6) and the front arm (7) are hinged to each other, and the middle arm (6) and the front arm (7) drive the telescopic movement between two adjacent arm sections through a second hydraulic cylinder (8). The rear arm (5) is hinged to the base (4) and the telescopic movement of the rear arm (5) is driven by a first hydraulic cylinder (9). The front section of the forearm (7) is hinged to a bucket (10), and the telescopic movement of the bucket (10) is driven by a third hydraulic cylinder (11).

3. The novel excavator double-arm structure according to claim 1 is characterized in that: The grab arm section of the grab arm comprises a large arm (13) and a small arm (14), the large arm (13) and the small arm (14) are hinged to each other, the large arm (13) and the small arm (14) are driven by a hydraulic cylinder four (15), and the connecting portion of the large arm (13) is connected to the interface of the base (4) by a bolt.

4. The novel excavator double-arm structure according to claim 1 is characterized in that: One end of the second clamping jaw (19) forms a hinge point connected to the hydraulic cylinder. The hydraulic cylinder and the hinge point with the second clamping jaw (19) are both located in a hollow channel formed on the forearm (14). The telescopic action of the hydraulic cylinder is transmitted to the second clamping jaw (19) through a mechanical linkage. When the second clamping jaw (19) is combined with the first clamping jaw (18) around the pin shaft (17), the semicircular parts of the first clamping jaw (18) and the second clamping jaw (19) intersect with each other.

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